/* roulang page: index */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,.66);
  --glass-soft:rgba(10,26,45,.52);
  --primary:#2E7CF6;
  --accent:#2DE2C5;
  --text:#EAF4FF;
  --muted:#93A9BF;
  --line:rgba(126,188,255,.18);
  --line-strong:rgba(126,188,255,.32);
  --warn:#FFB35C;
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 12px 30px rgba(2,8,16,.45);
  --shadow-2:0 20px 48px rgba(2,8,16,.55);
  --glow:0 0 22px rgba(45,226,197,.28);
  --wrap:1240px;
  --nav-h:126px;
  --sec-space:96px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--nav-h);
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  background-image:radial-gradient(900px 480px at 78% -8%,rgba(46,124,246,.14),transparent 62%),radial-gradient(720px 400px at 4% 24%,rgba(45,226,197,.08),transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:6px;
}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 28px;}
.section{padding:var(--sec-space) 0;}
.section-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;
  color:var(--accent);
  border:1px solid rgba(45,226,197,.28);
  background:rgba(45,226,197,.08);
  margin-bottom:16px;
}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.35;font-weight:800;letter-spacing:.01em;}
h3{font-size:clamp(17px,1.5vw,20px);line-height:1.5;font-weight:700;}
.lead{color:var(--muted);font-size:15.5px;line-height:1.85;margin-top:14px;}
.txt-muted{color:var(--muted);}
.small{font-size:13px;}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#2DE2C5 0%,#2E7CF6 100%);
  color:#04121F;
  box-shadow:0 10px 26px rgba(45,226,197,.26),0 0 0 1px rgba(45,226,197,.24) inset;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(45,226,197,.34),0 0 0 1px rgba(45,226,197,.42) inset;filter:brightness(1.05);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(126,188,255,.06);
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(126,188,255,.13);border-color:rgba(45,226,197,.5);box-shadow:var(--glow);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.btn[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none;}

/* ========== 头部导航 ========== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(4,10,18,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-top{display:flex;align-items:center;gap:20px;height:74px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(45,226,197,.9),rgba(46,124,246,.9));
  color:#04121F;font-weight:800;font-size:16px;
  box-shadow:0 0 18px rgba(45,226,197,.28);
}
.brand-text{display:flex;align-items:baseline;gap:8px;}
.brand-main{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--text);}
.brand-sub{
  font-size:12px;color:var(--muted);
  padding-left:8px;border-left:1px solid var(--line-strong);
  letter-spacing:.02em;white-space:nowrap;
}
.nav-search{
  margin-left:auto;
  display:flex;align-items:center;
  background:rgba(126,188,255,.07);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 4px 4px 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.55);box-shadow:var(--glow);}
.nav-search input{
  width:210px;border:0;background:transparent;color:var(--text);
  font-size:14px;padding:7px 0;font-family:inherit;
}
.nav-search input::placeholder{color:rgba(147,169,191,.75);}
.nav-search input:focus{outline:none;}
.search-btn{
  border:0;background:rgba(45,226,197,.14);color:var(--accent);
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;
  transition:background .2s ease,color .2s ease;
}
.search-btn:hover{background:rgba(45,226,197,.28);color:#04121F;}
.search-toggle{
  display:none;border:1px solid var(--line);background:rgba(126,188,255,.07);
  color:var(--text);width:40px;height:40px;border-radius:12px;
  place-items:center;font-size:15px;
}
.nav-cta{margin-left:8px;}
.search-panel{display:none;padding:0 0 14px;}
.search-panel.open{display:block;}
.search-panel form{display:flex;gap:10px;}
.search-panel input{
  flex:1;background:rgba(10,26,45,.8);border:1px solid var(--line);
  border-radius:var(--radius-sm);color:var(--text);padding:11px 14px;font-size:14px;font-family:inherit;
}
.channel-bar{border-top:1px solid rgba(126,188,255,.1);}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  padding:9px 0;overflow-x:auto;
  scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel{
  padding:8px 16px;border-radius:999px;
  font-size:14px;color:var(--muted);white-space:nowrap;
  border:1px solid transparent;
  transition:transform .18s ease,color .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.channel:hover{color:var(--text);transform:translateY(-1px);background:rgba(126,188,255,.08);border-color:var(--line);}
.channel.is-active{
  color:var(--text);
  background:linear-gradient(135deg,rgba(45,226,197,.2),rgba(46,124,246,.24));
  border-color:rgba(45,226,197,.45);
  box-shadow:0 0 18px rgba(45,226,197,.22);
  font-weight:700;
}

/* ========== Hero ========== */
.hero{
  position:relative;overflow:hidden;
  padding:78px 0 60px;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(760px 420px at 82% 12%,rgba(46,124,246,.22),transparent 62%),
    linear-gradient(180deg,rgba(6,16,29,.9) 0%,rgba(4,10,18,.97) 100%);
}
.hero::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 1px 1px,rgba(126,188,255,.16) 1px,transparent 0),
    linear-gradient(115deg,transparent 46%,rgba(45,226,197,.07) 50%,transparent 54%);
  background-size:34px 34px,100% 100%;
  opacity:.5;
}
.hero .wrap{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(45,226,197,.1);border:1px solid rgba(45,226,197,.3);
  color:var(--accent);font-size:12.5px;letter-spacing:.06em;margin-bottom:20px;
}
h1{
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.24;font-weight:800;letter-spacing:.01em;
}
h1 .hl{
  background:linear-gradient(120deg,#2DE2C5 0%,#68A7FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:20px;max-width:560px;
  color:var(--muted);font-size:16px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:18px;font-size:12.5px;color:rgba(147,169,191,.85);display:flex;align-items:center;gap:8px;}
.device-card{
  background:linear-gradient(160deg,rgba(15,34,58,.86),rgba(10,26,45,.62));
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:16px;
  box-shadow:var(--shadow-2),0 0 0 1px rgba(45,226,197,.08) inset;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.device-card .shot{
  position:relative;border-radius:14px;overflow:hidden;
  aspect-ratio:16/10;background:#08121F;
}
.device-card .shot img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.device-card .shot::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,10,18,0) 40%,rgba(4,10,18,.75) 100%);
}
.device-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:11.5px;padding:4px 10px;border-radius:999px;
  background:rgba(4,18,31,.72);border:1px solid rgba(45,226,197,.4);
  color:var(--accent);letter-spacing:.05em;
}
.device-rows{margin-top:14px;display:grid;gap:10px;}
.device-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 14px;border-radius:var(--radius-sm);
  background:rgba(126,188,255,.05);
  border:1px solid var(--line);
  font-size:13.5px;
}
.device-row i{color:var(--accent);margin-right:8px;}
.device-row .state{color:var(--muted);font-size:12px;}
.trust-bar{
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px 34px;
  font-size:13px;color:var(--muted);
}
.trust-bar span{display:inline-flex;align-items:center;gap:8px;}
.trust-bar i{color:var(--accent);font-size:12px;}

/* ========== 痛点区 ========== */
.pain-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:34px;align-items:start;}
.q-list{display:grid;gap:14px;}
.q-item{
  display:flex;align-items:flex-start;gap:14px;
  padding:18px 20px;border-radius:var(--radius-md);
  background:var(--glass-soft);
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.q-item:hover{transform:translateY(-2px);border-color:rgba(45,226,197,.32);background:rgba(14,32,54,.7);}
.q-num{
  flex-shrink:0;width:28px;height:28px;border-radius:9px;
  display:grid;place-items:center;font-size:12.5px;font-weight:800;
  color:var(--accent);background:rgba(45,226,197,.12);
  border:1px solid rgba(45,226,197,.26);
}
.q-item p{font-size:15.5px;line-height:1.6;}
.pain-panel{
  padding:30px 28px;border-radius:var(--radius-lg);
  background:linear-gradient(165deg,rgba(14,32,54,.82),rgba(10,26,45,.6));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.pain-panel h3{margin-bottom:12px;}
.pain-panel p{color:var(--muted);font-size:15px;line-height:1.85;}
.pain-panel .mini-list{margin:20px 0 22px;display:grid;gap:10px;}
.pain-panel .mini-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:#C9DAEC;
}
.pain-panel .mini-list i{color:var(--accent);margin-top:5px;font-size:11px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent);font-size:14px;font-weight:700;
  border-bottom:1px solid rgba(45,226,197,.35);
  padding-bottom:3px;
  transition:gap .2s ease,color .2s ease;
}
.link-arrow:hover{gap:13px;color:#7FF3DF;}

/* ========== 方案卡 ========== */
.plan-grid{
  display:grid;grid-template-columns:1.42fr 1fr;gap:22px;
}
.plan-card{
  position:relative;
  padding:28px;border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  overflow:hidden;
}
.plan-card:hover{transform:translateY(-3px);border-color:rgba(45,226,197,.34);box-shadow:var(--shadow-2);}
.plan-card.wide{grid-row:span 2;display:flex;flex-direction:column;}
.plan-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(45,226,197,.18),rgba(46,124,246,.22));
  border:1px solid rgba(45,226,197,.28);
  color:var(--accent);font-size:17px;margin-bottom:18px;
}
.plan-card p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-top:10px;}
.steps{margin-top:22px;display:grid;gap:0;position:relative;}
.step{
  display:grid;grid-template-columns:auto 1fr;gap:16px;
  padding-bottom:22px;position:relative;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:'';position:absolute;left:15px;top:34px;bottom:4px;width:1px;
  background:linear-gradient(180deg,rgba(45,226,197,.5),rgba(46,124,246,.12));
}
.step:last-child::before{display:none;}
.step-dot{
  width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:800;
  color:#04121F;background:linear-gradient(135deg,#2DE2C5,#2E7CF6);
  box-shadow:0 0 16px rgba(45,226,197,.3);
}
.step-body h4{font-size:15px;font-weight:700;margin-bottom:4px;}
.step-body p{margin:0;font-size:13.5px;line-height:1.7;color:var(--muted);}
.plan-card .link-arrow{margin-top:20px;}
.plan-card.wide .link-arrow{margin-top:auto;padding-top:20px;}

/* ========== 数据带 ========== */
.stats-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:rgba(10,26,45,.42);
}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);
}
.stat{
  background:rgba(6,16,29,.9);
  padding:30px 22px;
}
.stat .num{
  font-size:clamp(28px,3vw,40px);font-weight:800;line-height:1.1;
  background:linear-gradient(120deg,#8FE9DB,#5FA5FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:.01em;
}
.stat .num small{font-size:14px;font-weight:600;margin-left:4px;color:var(--muted);-webkit-text-fill-color:var(--muted);}
.stat .cap{margin-top:10px;font-size:14px;color:#C9DAEC;}
.stat .note{margin-top:6px;font-size:12px;color:rgba(147,169,191,.7);}

/* ========== 入口导航卡 ========== */
.entry-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(222px,1fr));
  gap:18px;
}
.entry-card{
  display:flex;flex-direction:column;
  border-radius:var(--radius-lg);overflow:hidden;
  background:var(--glass-soft);
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.entry-card:hover{transform:translateY(-3px);border-color:rgba(45,226,197,.34);box-shadow:var(--shadow-2);}
.entry-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#08121F;}
.entry-thumb img{width:100%;height:100%;object-fit:cover;opacity:.82;transition:transform .35s ease,opacity .35s ease;}
.entry-card:hover .entry-thumb img{transform:scale(1.04);opacity:.95;}
.entry-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,10,18,.05),rgba(4,10,18,.7));}
.entry-body{padding:18px 18px 20px;}
.entry-body h3{font-size:16px;margin-bottom:8px;}
.entry-body p{font-size:13.5px;color:var(--muted);line-height:1.7;min-height:46px;}
.entry-body .link-arrow{font-size:13px;margin-top:12px;}

/* ========== 最新信息 ========== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--glass-soft);
  border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(45,226,197,.34);box-shadow:var(--shadow-2);}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:#08121F;}
.news-thumb img{width:100%;height:100%;object-fit:cover;opacity:.85;}
.news-body{padding:18px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-bottom:10px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;font-size:12px;
  color:var(--accent);background:rgba(45,226,197,.1);
  border:1px solid rgba(45,226,197,.28);
}
.news-body h3{font-size:16px;line-height:1.55;margin-bottom:8px;}
.news-card-title a{transition:color .2s ease;}
.news-card-title a:hover{color:var(--accent);}
.news-body p{font-size:13.5px;color:var(--muted);line-height:1.72;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-body .link-arrow{margin-top:auto;padding-top:14px;font-size:13px;}
.empty-state{
  grid-column:1/-1;
  padding:42px 20px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  color:var(--muted);font-size:14.5px;
  background:rgba(10,26,45,.4);
}

/* ========== FAQ ========== */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start;}
.faq-item{
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:var(--glass-soft);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(126,188,255,.32);}
.faq-item.open{border-color:rgba(45,226,197,.38);background:rgba(14,32,54,.72);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;
  color:var(--text);font-size:15px;font-weight:700;text-align:left;line-height:1.6;
}
.faq-q i{color:var(--accent);font-size:13px;transition:transform .25s ease;flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 20px 20px;color:var(--muted);font-size:14.5px;line-height:1.85;
}
.faq-item.open .faq-a{max-height:320px;}

/* ========== CTA 带 ========== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:36px 38px;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(46,124,246,.2),rgba(45,226,197,.12));
  border:1px solid rgba(45,226,197,.3);
  box-shadow:var(--shadow-2);
  position:relative;overflow:hidden;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.cta-band::after{
  content:'';position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,226,197,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(21px,2.3vw,28px);}
.cta-band p{color:#C9DAEC;font-size:14.5px;margin-top:10px;max-width:620px;line-height:1.8;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;position:relative;z-index:2;}
.privacy-strip{
  margin-top:26px;padding:20px 24px;border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(10,26,45,.45);
  color:var(--muted);font-size:13px;line-height:1.85;
}
.privacy-strip a{color:var(--accent);border-bottom:1px solid rgba(45,226,197,.3);}

/* ========== 页脚 ========== */
.site-footer{
  margin-top:var(--sec-space);
  background:linear-gradient(180deg,#050D18 0%,#040A12 100%);
  border-top:1px solid var(--line);
  padding:60px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{color:var(--muted);font-size:13.5px;line-height:1.9;max-width:320px;}
.footer-col h4{
  font-size:14px;font-weight:800;color:var(--text);
  margin-bottom:16px;letter-spacing:.03em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:var(--muted);font-size:13.5px;transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:var(--accent);padding-left:4px;}
.footer-col p{color:var(--muted);font-size:13.5px;line-height:1.9;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px 24px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(147,169,191,.78);
}
.footer-bottom a{color:rgba(147,169,191,.9);}
.footer-bottom a:hover{color:var(--accent);}

/* ========== 返回顶部 ========== */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:rgba(10,26,45,.86);
  border:1px solid var(--line-strong);
  color:var(--accent);font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,box-shadow .25s ease;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:var(--glow);border-color:rgba(45,226,197,.5);}

/* ========== 弹层 ========== */
.modal-mask{
  position:fixed;inset:0;z-index:120;
  display:none;align-items:center;justify-content:center;
  padding:24px;
  background:rgba(2,8,16,.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.modal-mask.open{display:flex;}
.modal-card{
  width:100%;max-width:520px;
  max-height:88vh;overflow-y:auto;
  border-radius:var(--radius-lg);
  padding:30px;
  background:linear-gradient(165deg,rgba(16,36,60,.96),rgba(10,26,45,.92));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-2);
}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:8px;}
.modal-head h3{font-size:20px;}
.modal-close{
  width:34px;height:34px;border-radius:10px;
  border:1px solid var(--line);background:rgba(126,188,255,.08);
  color:var(--muted);display:grid;place-items:center;font-size:14px;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.modal-close:hover{color:var(--text);border-color:rgba(45,226,197,.45);background:rgba(45,226,197,.12);}
.modal-desc{color:var(--muted);font-size:13.5px;line-height:1.8;margin-bottom:20px;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13.5px;margin-bottom:8px;color:#C9DAEC;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;padding:11px 14px;
  background:rgba(6,16,29,.85);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  color:var(--text);font-size:14px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(147,169,191,.6);}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:rgba(45,226,197,.6);box-shadow:0 0 0 3px rgba(45,226,197,.12);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7;margin:14px 0 20px;}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:#2DE2C5;flex-shrink:0;}
.check-row a{color:var(--accent);}
.form-tip{font-size:12.5px;color:rgba(147,169,191,.8);margin-top:12px;line-height:1.7;}
.form-msg{display:none;margin-top:14px;padding:10px 14px;border-radius:10px;font-size:13.5px;background:rgba(45,226,197,.12);border:1px solid rgba(45,226,197,.35);color:#9FF3E4;}
.form-msg.show{display:block;}

/* ========== 响应式 ========== */
@media (max-width:1024px){
  :root{--sec-space:76px;--nav-h:118px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .plan-grid{grid-template-columns:1fr;}
  .plan-card.wide{grid-row:auto;}
  .pain-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-search input{width:160px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:768px){
  :root{--sec-space:62px;--nav-h:108px;}
  .wrap{padding:0 20px;}
  .nav-top{height:64px;gap:12px;}
  .brand-sub{display:none;}
  .brand-main{font-size:17px;}
  .nav-search{display:none;}
  .search-toggle{display:grid;margin-left:auto;}
  .nav-cta{margin-left:0;padding:10px 16px;font-size:13.5px;}
  .channel-scroll{padding:8px 0;}
  .hero{padding:52px 0 44px;}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:10px;}
  .btn{padding:11px 18px;font-size:14px;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .news-grid{grid-template-columns:1fr;}
  .modal-card{padding:24px;max-height:92vh;}
  .cta-band{padding:26px 22px;}
  .cta-actions{width:100%;flex-wrap:wrap;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  :root{--sec-space:52px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stats-grid{grid-template-columns:1fr;}
  .entry-grid{grid-template-columns:1fr;}
  .trust-bar{gap:10px 20px;font-size:12.5px;}
  .device-row{font-size:12.5px;padding:9px 12px;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-card{max-width:100%;border-radius:18px 18px 0 0;max-height:94vh;}
  .to-top{right:14px;bottom:16px;width:42px;height:42px;}
  .faq-q{font-size:14.5px;padding:16px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,0.66);
  --glass-soft:rgba(10,26,45,0.52);
  --line:rgba(126,188,255,0.18);
  --line-soft:rgba(126,188,255,0.10);
  --blue:#2E7CF6;
  --cyan:#2DE2C5;
  --text:#EAF4FF;
  --muted:#93A9BF;
  --amber:#FFB35C;
  --radius:18px;
  --radius-sm:12px;
  --radius-lg:22px;
  --shadow:0 18px 44px rgba(0,0,0,0.45);
  --shadow-soft:0 10px 26px rgba(0,0,0,0.28);
  --glow:0 0 22px rgba(45,226,197,0.30);
  --nav-h:118px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(1100px 620px at 82% -8%, rgba(46,124,246,0.18), transparent 62%),
    radial-gradient(880px 520px at 6% 12%, rgba(45,226,197,0.10), transparent 60%),
    linear-gradient(180deg,#06101D 0%,#040A12 100%);
  background-attachment:fixed;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  color:var(--text);
  font-weight:800;
  line-height:1.3;
  letter-spacing:.2px;
}

p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}

a{
  color:var(--cyan);
  text-decoration:none;
  transition:color .22s var(--ease);
}
a:hover{color:#8ff3e4;}

img{max-width:100%;display:block;height:auto;}

ul,ol{margin:0;padding:0;list-style:none;}

button{font-family:inherit;cursor:pointer;}

input,select,textarea{font-family:inherit;font-size:15px;}

::selection{background:rgba(45,226,197,0.32);color:#ffffff;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.4px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}

.btn-primary{
  color:#04121F;
  background:linear-gradient(120deg,var(--cyan) 0%,#4FA8FF 52%,var(--blue) 100%);
  box-shadow:0 0 0 1px rgba(45,226,197,0.35),0 10px 26px rgba(45,226,197,0.24);
}
.btn-primary:hover{
  color:#04121F;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(45,226,197,0.55),0 16px 34px rgba(45,226,197,0.34);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(45,226,197,0.4),0 6px 16px rgba(45,226,197,0.24);}

.btn-ghost{
  color:var(--text);
  background:rgba(10,26,45,0.6);
  border:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:rgba(45,226,197,0.5);
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(0,0,0,0.35);
}
.btn-ghost:active{transform:translateY(1px);}

.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;box-shadow:none;}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--cyan);
  border-bottom:1px solid rgba(45,226,197,0.35);
  padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--cyan);}
.link-more i{font-size:12px;transition:transform .22s var(--ease);}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,16,29,0.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-soft);
}

.nav-top{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:74px;
  padding:10px 0;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  text-decoration:none;
  flex:0 0 auto;
}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-size:18px;
  font-weight:800;
  color:#04121F;
  background:linear-gradient(140deg,var(--cyan),var(--blue));
  box-shadow:0 6px 18px rgba(45,226,197,0.28);
  flex:0 0 auto;
}
.brand-text{display:block;}
.brand-main{
  display:block;
  font-size:16px;
  font-weight:800;
  color:var(--text);
  line-height:1.25;
  letter-spacing:.6px;
}
.brand-sub{
  display:block;
  font-size:11px;
  color:var(--muted);
  letter-spacing:2.4px;
  line-height:1.4;
}
.brand:hover .brand-main{color:#ffffff;}

.nav-search{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  padding:4px 4px 4px 6px;
  border-radius:999px;
  background:rgba(10,26,45,0.78);
  border:1px solid var(--line);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search:focus-within{
  border-color:rgba(45,226,197,0.55);
  box-shadow:0 0 0 3px rgba(45,226,197,0.12);
}
.nav-search input[type="search"]{
  width:230px;
  padding:8px 12px;
  border:0;
  background:transparent;
  color:var(--text);
  outline:none;
  font-size:14px;
}
.nav-search input::placeholder{color:rgba(147,169,191,0.8);}
.search-btn{
  width:34px;
  height:34px;
  border:0;
  border-radius:50%;
  display:grid;
  place-items:center;
  color:#04121F;
  font-size:13px;
  background:linear-gradient(140deg,var(--cyan),var(--blue));
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.search-btn:hover{transform:translateY(-1px);box-shadow:0 0 16px rgba(45,226,197,0.4);}

.search-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(10,26,45,0.7);
  color:var(--text);
  font-size:15px;
  align-items:center;
  justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.search-toggle:hover{border-color:rgba(45,226,197,0.5);color:var(--cyan);}

.search-panel{
  display:none;
  padding:0 0 14px;
}
.search-panel.is-open{display:block;}
.search-panel form{
  display:flex;
  gap:10px;
  padding:10px;
  border-radius:var(--radius-sm);
  background:rgba(10,26,45,0.85);
  border:1px solid var(--line);
}
.search-panel input[type="search"]{
  flex:1 1 auto;
  min-width:0;
  padding:10px 14px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(4,10,18,0.75);
  color:var(--text);
  outline:none;
}
.search-panel input[type="search"]:focus{
  border-color:rgba(45,226,197,0.55);
  box-shadow:0 0 0 3px rgba(45,226,197,0.12);
}
.search-panel .btn{padding:10px 20px;}

.nav-cta{padding:11px 20px;font-size:14px;}

.channel-bar{
  position:relative;
  border-top:1px solid var(--line-soft);
}
.channel-bar::before,
.channel-bar::after{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  width:34px;
  pointer-events:none;
  z-index:2;
}
.channel-bar::before{left:0;background:linear-gradient(90deg,rgba(6,16,29,0.95),rgba(6,16,29,0));}
.channel-bar::after{right:0;background:linear-gradient(270deg,rgba(6,16,29,0.95),rgba(6,16,29,0));}

.channel-scroll{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:9px 34px 11px;
}
.channel-scroll::-webkit-scrollbar{display:none;}

.channel{
  display:inline-block;
  padding:8px 17px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  white-space:nowrap;
  transition:color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.channel:hover{
  color:var(--text);
  transform:translateY(-1px);
  border-color:var(--line);
  background:rgba(10,26,45,0.7);
  box-shadow:0 6px 16px rgba(0,0,0,0.28);
}
.channel.is-active{
  color:#04121F;
  font-weight:800;
  background:linear-gradient(120deg,var(--cyan),#4FA8FF);
  box-shadow:0 0 18px rgba(45,226,197,0.30);
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  padding:22px 0 0;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--text);font-weight:600;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:38px 0 66px;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.26;
  z-index:0;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(760px 420px at 78% 18%, rgba(46,124,246,0.22), transparent 66%),
    linear-gradient(180deg, rgba(6,16,29,0.72) 0%, rgba(4,10,18,0.94) 100%);
  z-index:0;
}
.cat-hero .wrap{position:relative;z-index:1;}

.arc-deco{
  position:absolute;
  right:-140px;
  top:-120px;
  width:520px;
  height:520px;
  border:1px solid rgba(126,188,255,0.12);
  border-radius:50%;
  z-index:0;
  pointer-events:none;
}
.arc-deco::after{
  content:"";
  position:absolute;
  inset:70px;
  border:1px solid rgba(45,226,197,0.10);
  border-radius:50%;
}

.hero-grid{
  display:grid;
  grid-template-columns:1.06fr .94fr;
  gap:52px;
  align-items:center;
}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(45,226,197,0.30);
  background:rgba(45,226,197,0.08);
  color:var(--cyan);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.8px;
  margin-bottom:20px;
}
.kicker i{font-size:11px;}

.cat-hero h1{
  font-size:clamp(28px,3.5vw,42px);
  line-height:1.28;
  margin-bottom:18px;
  letter-spacing:.4px;
}
.cat-hero h1 .accent{
  color:var(--cyan);
}

.hero-lead{
  font-size:16px;
  line-height:1.85;
  color:#C2D4E6;
  max-width:560px;
  margin-bottom:26px;
}

.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:26px;
}

.hero-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  color:#B9CDDF;
  background:rgba(10,26,45,0.7);
  border:1px solid var(--line);
}
.chip i{color:var(--cyan);font-size:11px;}

.device-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(126,188,255,0.24);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),0 0 0 1px rgba(45,226,197,0.08) inset;
}
.device-card img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  opacity:.95;
}
.device-card .card-cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:22px;
  background:linear-gradient(180deg,rgba(4,10,18,0) 0%,rgba(4,10,18,0.92) 78%);
}
.device-card .card-cap strong{
  display:block;
  font-size:16px;
  font-weight:800;
  margin-bottom:4px;
}
.device-card .card-cap span{
  display:block;
  font-size:13px;
  color:var(--muted);
  line-height:1.6;
}
.device-badge{
  position:absolute;
  top:16px;
  left:16px;
  padding:6px 13px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(120deg,var(--cyan),#4FA8FF);
  box-shadow:0 6px 16px rgba(45,226,197,0.3);
}

/* ---------- 通用板块 ---------- */
.section{padding:84px 0;}
.section-tight{padding:64px 0;}

.section-head{
  max-width:720px;
  margin-bottom:42px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

.eyebrow{
  display:block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:2.4px;
  color:var(--cyan);
  margin-bottom:12px;
}

.section-head h2{
  font-size:clamp(24px,2.9vw,34px);
  line-height:1.32;
  margin-bottom:14px;
}
.section-head p{
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
}

/* ---------- 流程时间轴 ---------- */
.flow-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:44px;
  align-items:start;
}

.steps{
  position:relative;
  padding-left:0;
}
.step{
  position:relative;
  padding-left:70px;
  padding-bottom:34px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";
  position:absolute;
  left:23px;
  top:48px;
  bottom:-2px;
  width:2px;
  background:linear-gradient(180deg,rgba(45,226,197,0.45),rgba(46,124,246,0.14));
}
.step:last-child::before{display:none;}

.step-num{
  position:absolute;
  left:0;
  top:0;
  width:48px;
  height:48px;
  border-radius:15px;
  display:grid;
  place-items:center;
  font-size:17px;
  font-weight:800;
  color:var(--cyan);
  background:rgba(10,26,45,0.9);
  border:1px solid rgba(45,226,197,0.34);
  box-shadow:0 0 18px rgba(45,226,197,0.14);
}

.step-body{
  padding:20px 22px;
  border-radius:var(--radius);
  background:rgba(10,26,45,0.62);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.step-body:hover{
  border-color:rgba(45,226,197,0.38);
  transform:translateY(-2px);
  box-shadow:var(--shadow-soft);
}
.step-body h3{
  font-size:18px;
  margin-bottom:8px;
}
.step-body p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
}

/* 侧边核对卡 */
.check-card{
  position:sticky;
  top:calc(74px + 22px);
  padding:28px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid rgba(126,188,255,0.22);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.check-card h3{
  font-size:19px;
  margin-bottom:6px;
}
.check-card .sub{
  font-size:13.5px;
  color:var(--muted);
  margin-bottom:20px;
}
.check-list li{
  display:flex;
  gap:12px;
  padding:11px 0;
  border-bottom:1px dashed rgba(126,188,255,0.14);
  font-size:14.5px;
  color:#C8D9E8;
  line-height:1.7;
}
.check-list li:last-child{border-bottom:0;}
.check-list li i{
  color:var(--cyan);
  font-size:13px;
  margin-top:6px;
  flex:0 0 auto;
}
.check-card .check-foot{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  font-size:13px;
  color:var(--muted);
  line-height:1.75;
}

/* ---------- 注意事项 ---------- */
.notes-band{
  background:linear-gradient(180deg,rgba(4,10,18,0.0),rgba(10,26,45,0.42) 40%,rgba(4,10,18,0.0));
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.notes-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px 28px;
}
.note-item{
  display:flex;
  gap:14px;
  padding:18px 20px;
  border-radius:var(--radius);
  background:rgba(10,26,45,0.56);
  border:1px solid var(--line-soft);
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.note-item:hover{
  border-color:rgba(126,188,255,0.30);
  background:rgba(10,26,45,0.78);
}
.note-item .note-ico{
  width:34px;
  height:34px;
  border-radius:11px;
  display:grid;
  place-items:center;
  flex:0 0 auto;
  color:var(--cyan);
  background:rgba(45,226,197,0.10);
  border:1px solid rgba(45,226,197,0.22);
  font-size:13px;
}
.note-item h4{
  font-size:15.5px;
  margin-bottom:5px;
}
.note-item p{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}
.note-item.warn .note-ico{
  color:var(--amber);
  background:rgba(255,179,92,0.10);
  border-color:rgba(255,179,92,0.26);
}

/* ---------- FAQ ---------- */
.faq-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
}
.faq-item{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(10,26,45,0.6);
  backdrop-filter:blur(10px);
  overflow:hidden;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.faq-item:hover{border-color:rgba(45,226,197,0.32);}
.faq-item[open]{
  border-color:rgba(45,226,197,0.42);
  background:rgba(10,26,45,0.84);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:19px 22px;
  font-size:15.5px;
  font-weight:700;
  color:var(--text);
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary .faq-ico{
  flex:0 0 auto;
  width:24px;
  height:24px;
  border-radius:8px;
  display:grid;
  place-items:center;
  font-size:11px;
  color:var(--cyan);
  background:rgba(45,226,197,0.10);
  border:1px solid rgba(45,226,197,0.24);
  transition:transform .28s var(--ease),background .28s var(--ease);
  margin-top:2px;
}
.faq-item[open] summary .faq-ico{
  transform:rotate(180deg);
  background:rgba(45,226,197,0.22);
}
.faq-body{
  padding:0 22px 20px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.85;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  padding:46px 44px;
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(46,124,246,0.20),rgba(45,226,197,0.12));
  border:1px solid rgba(126,188,255,0.26);
  backdrop-filter:blur(12px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-80px;
  bottom:-120px;
  width:300px;
  height:300px;
  border-radius:50%;
  border:1px solid rgba(45,226,197,0.16);
  pointer-events:none;
}
.cta-band h2{
  font-size:clamp(21px,2.4vw,27px);
  margin-bottom:8px;
}
.cta-band p{
  color:#C2D4E6;
  font-size:14.5px;
  max-width:640px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 隐私说明带 ---------- */
.privacy-band{
  padding:26px 0 34px;
}
.privacy-inner{
  display:flex;
  flex-wrap:wrap;
  gap:14px 26px;
  align-items:center;
  padding:20px 24px;
  border-radius:var(--radius);
  background:rgba(10,26,45,0.5);
  border:1px solid var(--line-soft);
  font-size:13.5px;
  color:var(--muted);
  line-height:1.75;
}
.privacy-inner i{color:var(--cyan);margin-right:8px;}
.privacy-inner a{color:#B9CDDF;border-bottom:1px solid rgba(147,169,191,0.4);}
.privacy-inner a:hover{color:var(--cyan);border-bottom-color:var(--cyan);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;
  padding:64px 0 30px;
  background:linear-gradient(180deg,rgba(4,10,18,0.4),rgba(4,10,18,0.95));
  border-top:1px solid var(--line-soft);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:42px;
  border-bottom:1px solid var(--line-soft);
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--muted);
  line-height:1.85;
  max-width:360px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:var(--muted);
}
.footer-col a:hover{color:var(--cyan);}
.footer-col p{
  font-size:14px;
  color:var(--muted);
  line-height:1.9;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  align-items:center;
  justify-content:space-between;
  padding-top:26px;
  font-size:13px;
  color:rgba(147,169,191,0.86);
}
.footer-bottom a{color:rgba(185,205,223,0.9);}
.footer-bottom a:hover{color:var(--cyan);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:26px;
  width:46px;
  height:46px;
  border-radius:14px;
  display:grid;
  place-items:center;
  color:var(--text);
  background:rgba(10,26,45,0.88);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-soft);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease),border-color .2s var(--ease);
  z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:rgba(45,226,197,0.5);color:var(--cyan);transform:translateY(-2px);}

/* ---------- 表单弹层 ---------- */
.modal-mask{
  position:fixed;
  inset:0;
  z-index:100;
  display:none;
  align-items:center;
  justify-content:center;
  padding:28px;
  background:rgba(3,8,14,0.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.modal-mask.is-open{display:flex;}

.modal-card{
  position:relative;
  width:100%;
  max-width:560px;
  max-height:calc(100vh - 56px);
  overflow-y:auto;
  padding:32px;
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(14,32,54,0.96),rgba(6,16,29,0.98));
  border:1px solid rgba(126,188,255,0.28);
  box-shadow:0 30px 80px rgba(0,0,0,0.6),0 0 0 1px rgba(45,226,197,0.10) inset;
  animation:modalIn .28s var(--ease);
}
@keyframes modalIn{
  from{opacity:0;transform:translateY(16px) scale(.98);}
  to{opacity:1;transform:translateY(0) scale(1);}
}
.modal-card h3{
  font-size:21px;
  margin-bottom:8px;
}
.modal-card .modal-sub{
  font-size:14px;
  color:var(--muted);
  margin-bottom:24px;
  line-height:1.75;
}
.modal-close{
  position:absolute;
  top:16px;
  right:16px;
  width:34px;
  height:34px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(10,26,45,0.8);
  color:var(--muted);
  display:grid;
  place-items:center;
  font-size:13px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{color:var(--cyan);border-color:rgba(45,226,197,0.5);}

.form-row{margin-bottom:16px;}
.form-row label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  color:#C2D4E6;
  margin-bottom:7px;
}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;
  padding:11px 14px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(4,10,18,0.72);
  color:var(--text);
  outline:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.form-row textarea{resize:vertical;min-height:82px;}
.form-row input::placeholder,
.form-row textarea::placeholder{color:rgba(147,169,191,0.7);}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  border-color:rgba(45,226,197,0.6);
  box-shadow:0 0 0 3px rgba(45,226,197,0.14);
}
.form-check{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
  margin:18px 0 20px;
}
.form-check input{
  width:16px;
  height:16px;
  margin-top:4px;
  accent-color:#2DE2C5;
  flex:0 0 auto;
}
.form-note{
  margin-top:14px;
  font-size:12.5px;
  color:rgba(147,169,191,0.85);
  line-height:1.7;
}
.modal-card .btn{width:100%;}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-search input[type="search"]{width:180px;}
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .flow-grid{grid-template-columns:1fr;gap:34px;}
  .check-card{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}

@media (max-width:1024px){
  .wrap{padding:0 22px;}
  .section{padding:70px 0;}
  .section-tight{padding:54px 0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 30px;}
  .cta-actions{width:100%;}
}

@media (max-width:900px){
  .nav-search{display:none;}
  .search-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{margin-left:0;}
  .hero-grid{grid-template-columns:1fr;gap:30px;}
  .cat-hero{padding:30px 0 52px;}
  .device-card img{aspect-ratio:16/10;}
  .notes-grid{grid-template-columns:1fr;}
  .faq-list{grid-template-columns:1fr;}
  .arc-deco{display:none;}
}

@media (max-width:768px){
  .wrap{padding:0 18px;}
  .nav-top{min-height:66px;gap:12px;}
  .brand-mark{width:36px;height:36px;border-radius:11px;font-size:16px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:10px;letter-spacing:1.8px;}
  .nav-cta{padding:10px 15px;font-size:13px;}
  .channel-scroll{padding:8px 22px 10px;}
  .channel{padding:7px 14px;font-size:13.5px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .step{padding-left:58px;padding-bottom:26px;}
  .step-num{width:42px;height:42px;border-radius:13px;font-size:15px;}
  .step::before{left:20px;top:44px;}
  .step-body{padding:16px 18px;}
  .check-card{padding:22px;}
  .cta-band{padding:30px 22px;border-radius:var(--radius);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-card{
    max-width:100%;
    max-height:92vh;
    border-radius:20px 20px 0 0;
    padding:26px 20px calc(26px + env(safe-area-inset-bottom));
  }
  .to-top{right:16px;bottom:16px;width:42px;height:42px;}
}

@media (max-width:520px){
  .cat-hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .btn{padding:12px 18px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr;}
  .privacy-inner{padding:16px 18px;}
  .faq-item summary{padding:16px 18px;font-size:14.5px;}
  .faq-body{padding:0 18px 18px;font-size:14px;}
}

/* roulang page: article */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,.66);
  --glass-soft:rgba(10,26,45,.5);
  --card:rgba(12,28,48,.72);
  --line:rgba(126,188,255,.18);
  --line-strong:rgba(126,188,255,.34);
  --primary:#2E7CF6;
  --accent:#2DE2C5;
  --text:#EAF4FF;
  --text-soft:#C7DBF0;
  --muted:#93A9BF;
  --warn:#FFB35C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 20px 48px rgba(2,8,18,.55);
  --shadow-soft:0 10px 26px rgba(2,8,18,.4);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(920px 520px at 10% -10%, rgba(46,124,246,.16), transparent 62%),
    radial-gradient(780px 480px at 94% 2%, rgba(45,226,197,.10), transparent 60%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(126,188,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,188,255,.05) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 18%, #000 18%, transparent 76%);
  mask-image:radial-gradient(circle at 50% 18%, #000 18%, transparent 76%);
  opacity:.7;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:1.15rem}
a{color:var(--text);text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.site-header,.site-footer,main{position:relative;z-index:1}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 28px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#04121D;padding:10px 16px;z-index:300;border-radius:0 0 10px 0;font-weight:700}
.skip-link:focus{left:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#2DE2C5 0%,#2E7CF6 100%);
  color:#04121D;
  font-weight:700;
  box-shadow:0 10px 26px rgba(45,150,246,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(45,180,246,.42);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(45,150,246,.3)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(126,188,255,.12);border-color:rgba(45,226,197,.5)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}

/* ---------- header ---------- */
.site-header{
  background:rgba(5,13,24,.88);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-top{display:flex;align-items:center;gap:18px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;color:#04121D;
  background:linear-gradient(140deg,#2DE2C5,#2E7CF6);
  box-shadow:0 8px 20px rgba(45,150,246,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.4px;color:var(--text)}
.brand-sub{font-size:11.5px;letter-spacing:2.4px;color:var(--accent);margin-top:2px}
.nav-search{
  display:flex;align-items:center;gap:6px;flex:1;max-width:330px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 4px 4px 16px;
  transition:border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.nav-search:focus-within{border-color:rgba(45,226,197,.55);box-shadow:0 0 0 3px rgba(45,226,197,.12)}
.nav-search input{
  flex:1;min-width:0;background:transparent;border:0;color:var(--text);
  font-size:14px;padding:7px 0;
}
.nav-search input::placeholder{color:rgba(147,169,191,.85)}
.nav-search input:focus{outline:none}
.search-btn{
  width:34px;height:34px;flex-shrink:0;border:0;border-radius:999px;cursor:pointer;
  background:linear-gradient(135deg,#2DE2C5,#2E7CF6);color:#04121D;
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:filter .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{filter:brightness(1.08);transform:scale(1.04)}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;
}
.search-toggle:hover{border-color:rgba(45,226,197,.5)}
.nav-cta{margin-left:auto;white-space:nowrap}
.search-panel{display:none;padding:0 0 14px}
.search-panel.is-open{display:block}
.search-panel form{display:flex;gap:10px}
.search-panel input{
  flex:1;min-width:0;background:rgba(255,255,255,.05);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:11px 14px;color:var(--text);font-size:14.5px;
}
.search-panel input:focus{outline:none;border-color:rgba(45,226,197,.55);box-shadow:0 0 0 3px rgba(45,226,197,.12)}

.channel-bar{position:relative;border-top:1px solid rgba(126,188,255,.08);padding-top:8px}
.channel-bar::before,.channel-bar::after{
  content:"";position:absolute;top:0;bottom:0;width:26px;pointer-events:none;z-index:2;
}
.channel-bar::before{left:0;background:linear-gradient(90deg,rgba(5,13,24,.95),transparent)}
.channel-bar::after{right:0;background:linear-gradient(270deg,rgba(5,13,24,.95),transparent)}
.channel-scroll{
  display:flex;gap:6px;overflow-x:auto;padding:4px 2px 12px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
  padding:8px 16px;border-radius:999px;font-size:14.5px;color:var(--muted);
  white-space:nowrap;border:1px solid transparent;
  transition:color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.channel:hover{color:var(--text);transform:translateY(-1px);border-color:var(--line);background:rgba(255,255,255,.04)}
.channel.is-active{
  color:var(--text);font-weight:600;
  background:linear-gradient(135deg,rgba(45,226,197,.18),rgba(46,124,246,.24));
  border-color:rgba(45,226,197,.45);
  box-shadow:0 0 18px rgba(45,226,197,.18);
}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:44px 0 46px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg,rgba(6,16,29,.9),rgba(4,10,18,.97)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;
  border-radius:50%;border:1px solid rgba(45,226,197,.16);
  box-shadow:0 0 0 60px rgba(46,124,246,.05);
  pointer-events:none;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--muted);transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{opacity:.5}
.crumbs .cur{color:var(--text-soft)}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12.5px;letter-spacing:.3px;
  background:rgba(45,226,197,.13);color:var(--accent);
  border:1px solid rgba(45,226,197,.32);
}
.badge-soft{
  background:rgba(126,188,255,.08);color:var(--text-soft);
  border-color:var(--line);
}
.article-title{
  font-size:clamp(27px,3.3vw,43px);
  line-height:1.32;
  font-weight:800;
  letter-spacing:.4px;
  max-width:920px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:18px;font-size:13.5px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.article-meta i{margin-right:6px;color:rgba(45,226,197,.8)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(126,188,255,.4)}
.article-lead{
  margin-top:20px;max-width:880px;font-size:16.5px;line-height:1.88;color:var(--text-soft);
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 268px;
  gap:40px;align-items:start;
  padding:52px 0 74px;
}
.article-body{
  background:rgba(8,22,38,.84);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:34px 40px 40px;
  font-size:16.5px;
  line-height:1.9;
  color:#DCEAF7;
  box-shadow:var(--shadow-soft);
  overflow-wrap:break-word;
}
.article-body > p{margin:0 0 20px}
.article-body > p:last-child{margin-bottom:0}
.article-body h1,.article-body h2{
  font-size:clamp(21px,2.2vw,27px);
  line-height:1.45;font-weight:800;color:var(--text);
  margin:44px 0 16px;padding-left:14px;
  border-left:3px solid var(--accent);
}
.article-body h3{
  font-size:19px;line-height:1.5;font-weight:700;color:#BFEFFF;
  margin:30px 0 12px;
}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px;color:var(--text-soft)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.35rem}
.article-body li{margin:8px 0}
.article-body a{color:#6FE3F0;text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease)}
.article-body a:hover{color:var(--accent)}
.article-body strong{color:#FFFFFF}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:rgba(46,124,246,.1);
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text-soft);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:14px;border:1px solid var(--line);
  margin:24px auto;max-width:100%;height:auto;
}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body table th,.article-body table td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body table th{background:rgba(46,124,246,.12);color:var(--text)}
.article-body code{background:rgba(126,188,255,.12);padding:1px 6px;border-radius:6px;font-size:.92em;color:#BFEFFF}

.empty-state{text-align:center;padding:40px 10px}
.empty-state i{font-size:34px;color:rgba(45,226,197,.7);margin-bottom:14px;display:block}
.empty-state h2{font-size:22px;font-weight:800;margin-bottom:10px;border:0;padding:0}
.empty-state p{color:var(--muted);margin-bottom:22px}

.toc{
  position:sticky;top:24px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:18px 18px 20px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow-soft);
}
.toc-title{
  font-size:13px;letter-spacing:2px;color:var(--accent);
  font-weight:700;margin-bottom:12px;border:0;padding:0;
}
.toc-list{list-style:none;margin:0;padding:0;max-height:56vh;overflow:auto}
.toc-list li{margin:2px 0}
.toc-list a{
  display:block;padding:7px 10px;border-radius:9px;
  font-size:13.5px;line-height:1.5;color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease);
  border-left:2px solid transparent;
}
.toc-list a:hover{color:var(--text);background:rgba(126,188,255,.08)}
.toc-list a.is-current{color:var(--accent);background:rgba(45,226,197,.1);border-left-color:var(--accent)}
.toc-list .toc-h3 a{padding-left:22px;font-size:13px}

/* ---------- related ---------- */
.section{padding:0 0 76px}
.section-head{margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:.3px}
.section-head p{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:680px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:block;padding:22px 22px 20px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(45,226,197,.42);box-shadow:0 16px 34px rgba(2,8,18,.5);background:rgba(14,34,58,.82)}
.rel-card .rel-icon{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(45,226,197,.12);color:var(--accent);margin-bottom:14px;font-size:15px;
}
.rel-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--text)}
.rel-card p{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:12px}
.rel-more{font-size:13.5px;color:var(--accent);font-weight:600}
.rel-more i{margin-left:4px;transition:transform .2s var(--ease)}
.rel-card:hover .rel-more i{transform:translateX(3px)}

/* ---------- cta band ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:32px 36px;border-radius:var(--r-lg);
  border:1px solid rgba(45,226,197,.22);
  background:
    radial-gradient(600px 240px at 8% 0%, rgba(45,226,197,.14), transparent 68%),
    linear-gradient(135deg,rgba(12,30,52,.9),rgba(8,20,36,.92));
  box-shadow:var(--shadow-soft);
}
.cta-band h2{font-size:clamp(20px,2.1vw,25px);font-weight:800;margin-bottom:8px}
.cta-band p{font-size:14.5px;color:var(--muted);max-width:560px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:56px 0 0;
  margin-top:8px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding-bottom:40px}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--muted);max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px;letter-spacing:.5px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:9px 0}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--muted)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(126,188,255,.12);
  padding:18px 0 24px;
  font-size:12.5px;color:rgba(147,169,191,.85);
  font-variant-numeric:tabular-nums;
}
.footer-bottom a{color:rgba(147,169,191,.9);transition:color .2s var(--ease)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- modal ---------- */
.modal-mask{
  display:none;position:fixed;inset:0;z-index:200;
  background:rgba(3,8,16,.74);
  backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);
  padding:24px;overflow-y:auto;
}
.modal-mask.is-open{display:flex;align-items:center;justify-content:center}
.modal-card{
  position:relative;width:min(560px,100%);
  background:linear-gradient(150deg,rgba(14,32,54,.96),rgba(7,18,32,.97));
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  padding:30px 30px 28px;
  box-shadow:var(--shadow);
}
.modal-close{
  position:absolute;top:14px;right:14px;
  width:34px;height:34px;border-radius:10px;cursor:pointer;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--muted);
  display:flex;align-items:center;justify-content:center;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{color:var(--text);background:rgba(255,255,255,.12);border-color:rgba(45,226,197,.5)}
.modal-card h3{font-size:21px;font-weight:800;margin-bottom:8px}
.modal-card .modal-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-row{display:flex;flex-direction:column;gap:7px}
.form-row.full{grid-column:1 / -1}
.form-row label{font-size:13px;color:var(--text-soft);font-weight:600}
.form-row input,.form-row select,.form-row textarea{
  width:100%;background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:10px;
  padding:10px 12px;font-size:14px;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.form-row textarea{resize:vertical;min-height:84px}
.form-row input::placeholder,.form-row textarea::placeholder{color:rgba(147,169,191,.7)}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:rgba(45,226,197,.6);
  box-shadow:0 0 0 3px rgba(45,226,197,.13);
  background:rgba(255,255,255,.08);
}
.form-check{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--muted);line-height:1.7}
.form-check input{width:16px;height:16px;margin-top:3px;accent-color:var(--accent);flex-shrink:0}
.modal-card .form-actions{margin-top:18px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.modal-note{font-size:12.5px;color:rgba(147,169,191,.8);line-height:1.7;margin-top:12px}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:120;
  width:46px;height:46px;border-radius:14px;cursor:pointer;
  background:rgba(10,26,45,.85);border:1px solid var(--line-strong);
  color:var(--text);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(10px);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{border-color:rgba(45,226,197,.6);box-shadow:0 0 20px rgba(45,226,197,.22)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .wrap{padding:0 22px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px;padding:40px 0 60px}
  .toc{display:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .nav-search{max-width:260px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .wrap{padding:0 18px}
  .nav-top{flex-wrap:wrap;gap:12px;padding:12px 0}
  .nav-search{display:none}
  .search-toggle{display:flex}
  .nav-cta{margin-left:0;flex:1;justify-content:center;order:4;width:100%}
  .channel-bar{border-top:0}
  .article-hero{padding:30px 0 34px}
  .article-lead{-webkit-line-clamp:5;font-size:15.5px}
  .article-body{padding:24px 20px 28px;font-size:16px;border-radius:var(--r-md)}
  .article-body h1,.article-body h2{margin-top:34px}
  .section{padding:0 0 56px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .modal-mask{padding:14px;align-items:flex-start}
  .modal-card{padding:24px 20px 22px;margin:18px 0}
  .form-grid{grid-template-columns:1fr}
  .to-top{right:14px;bottom:16px;width:42px;height:42px}
}
@media (max-width:520px){
  .brand-main{font-size:16px}
  .brand-sub{font-size:10.5px;letter-spacing:1.8px}
  .article-title{font-size:25px}
  .article-meta{gap:10px;font-size:12.5px}
  .article-body{padding:20px 16px 24px}
  .article-body ul,.article-body ol{padding-left:1.1rem}
}

/* roulang page: category2 */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,.66);
  --glass-soft:rgba(10,26,45,.52);
  --line:rgba(126,188,255,.18);
  --line-strong:rgba(126,188,255,.36);
  --brand:#2E7CF6;
  --cyan:#2DE2C5;
  --text:#EAF4FF;
  --muted:#93A9BF;
  --warn:#FFB35C;
  --r-lg:20px;
  --r-md:16px;
  --r-btn:12px;
  --nav-h:122px;
  --shadow-soft:0 16px 40px rgba(2,8,16,.45);
  --shadow-hover:0 22px 52px rgba(2,8,16,.58);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(1100px 620px at 82% -8%, rgba(46,124,246,.20), transparent 62%),
    radial-gradient(900px 520px at 6% 4%, rgba(45,226,197,.12), transparent 58%),
    linear-gradient(180deg,#06101D 0%,#040A12 100%);
  background-attachment:fixed;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px, rgba(126,188,255,.10) 1px, transparent 0);
  background-size:36px 36px;
  opacity:.55;
}
img{max-width:100%;display:block;border:0;height:auto;}
a{color:var(--cyan);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:#7ef2df;}
h1,h2,h3,h4,h5,h6{
  color:var(--text);
  font-weight:800;
  line-height:1.32;
  margin:0;
  text-align:left;
  letter-spacing:.2px;
}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(45,226,197,.28);color:#fff;}
.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
  position:relative;
  z-index:1;
}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:13px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#2DE2C5 0%,#2E7CF6 100%);
  color:#03121F;
  font-weight:700;
  box-shadow:0 0 0 1px rgba(45,226,197,.30),0 10px 26px rgba(46,124,246,.30);
}
.btn-primary:hover{
  transform:translateY(-2px);
  color:#03121F;
  filter:brightness(1.06);
  box-shadow:0 0 0 1px rgba(45,226,197,.45),0 16px 34px rgba(46,124,246,.44);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(10,26,45,.62);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  color:#fff;
  border-color:rgba(45,226,197,.55);
  background:rgba(14,34,58,.78);
  box-shadow:0 12px 28px rgba(2,8,16,.45);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 16px;font-size:14px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:14px;
  font-weight:600;
  color:var(--cyan);
}
.link-arrow i{font-size:12px;transition:transform .22s var(--ease);}
.link-arrow:hover{color:#8bf6e6;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(5,14,25,.82);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 10px 30px rgba(2,8,16,.42);
}
.nav-top{
  display:flex;
  align-items:center;
  gap:18px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  text-decoration:none;
  color:var(--text);
  flex:0 0 auto;
}
.brand-mark{
  width:40px;
  height:40px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:19px;
  font-weight:800;
  color:#03121F;
  background:linear-gradient(135deg,#2DE2C5,#2E7CF6);
  box-shadow:0 0 0 1px rgba(45,226,197,.35),0 8px 20px rgba(46,124,246,.34);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.4px;color:#EAF4FF;}
.brand-sub{font-size:11.5px;letter-spacing:1.6px;color:var(--muted);}
.nav-search{
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
  gap:6px;
  background:rgba(10,26,45,.72);
  border:1px solid var(--line);
  border-radius:999px;
  padding:4px 4px 4px 16px;
  margin-left:auto;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search:focus-within{
  border-color:rgba(45,226,197,.55);
  box-shadow:0 0 0 3px rgba(45,226,197,.12);
}
.nav-search input[type="search"]{
  flex:1;
  background:transparent;
  border:0;
  box-shadow:none;
  margin:0;
  padding:0;
  height:34px;
  color:var(--text);
  font-size:14px;
}
.nav-search input[type="search"]::placeholder{color:rgba(147,169,191,.78);}
.nav-search input[type="search"]:focus{outline:none;box-shadow:none;}
.search-btn{
  width:34px;
  height:34px;
  border-radius:50%;
  border:0;
  cursor:pointer;
  display:grid;
  place-items:center;
  color:#03121F;
  background:linear-gradient(135deg,#2DE2C5,#2E7CF6);
  transition:filter .22s var(--ease),transform .22s var(--ease);
}
.search-btn:hover{filter:brightness(1.08);transform:scale(1.04);}
.search-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(10,26,45,.7);
  color:var(--text);
  cursor:pointer;
  margin-left:auto;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.search-toggle:hover{border-color:rgba(45,226,197,.5);background:rgba(14,34,58,.8);}
.nav-cta{flex:0 0 auto;max-width:160px;}
.search-panel{
  display:none;
  padding:12px 0 4px;
  border-top:1px solid rgba(126,188,255,.12);
}
.search-panel.is-open{display:block;}
.search-panel form{
  display:flex;
  gap:10px;
  align-items:center;
}
.search-panel input[type="search"]{
  flex:1;
  height:46px;
  margin:0;
  border-radius:12px;
  background:rgba(6,16,29,.9);
  border:1px solid var(--line);
  color:var(--text);
  padding:0 16px;
  font-size:15px;
  box-shadow:none;
}
.search-panel input[type="search"]:focus{
  border-color:rgba(45,226,197,.55);
  box-shadow:0 0 0 3px rgba(45,226,197,.12);
}
.channel-bar{
  border-top:1px solid rgba(126,188,255,.10);
  padding:9px 0 11px;
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
  padding:2px 26px;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel{
  flex:0 0 auto;
  padding:8px 17px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:500;
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.channel:hover{
  color:var(--text);
  transform:translateY(-1px);
  background:rgba(126,188,255,.09);
  border-color:rgba(126,188,255,.22);
}
.channel.is-active{
  color:#EAF4FF;
  font-weight:700;
  border-color:rgba(45,226,197,.45);
  background:linear-gradient(180deg,rgba(45,226,197,.16),rgba(46,124,246,.12));
  box-shadow:0 0 20px rgba(45,226,197,.18),inset 0 0 0 1px rgba(45,226,197,.10);
}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  padding:26px 0 0;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--cyan);}
.crumbs .sep{opacity:.5;}
.crumbs [aria-current="page"]{color:#C9DDF1;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin:22px 0 0;
  border-radius:26px;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(6,16,29,.94),rgba(9,26,45,.86));
  box-shadow:var(--shadow-soft);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.30;
  transform:scale(1.02);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(720px 380px at 88% 10%, rgba(46,124,246,.30), transparent 66%),
    radial-gradient(520px 300px at 4% 96%, rgba(45,226,197,.16), transparent 68%),
    linear-gradient(180deg,rgba(4,10,18,.55),rgba(4,10,18,.86));
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:40px;
  align-items:center;
  padding:52px 46px;
}
.hero-copy{max-width:640px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:1.2px;
  color:#8BF6E6;
  background:rgba(45,226,197,.10);
  border:1px solid rgba(45,226,197,.30);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.28;
  letter-spacing:.4px;
  margin-bottom:16px;
}
.hero h1 .hl{
  background:linear-gradient(120deg,#2DE2C5,#7FB2FF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  font-size:16.5px;
  line-height:1.85;
  color:#C4D7E8;
  max-width:600px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.tag-row{display:flex;flex-wrap:wrap;gap:9px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12.5px;
  color:#AEDCF0;
  background:rgba(10,26,45,.72);
  border:1px solid var(--line);
  border-radius:999px;
  padding:6px 13px;
}
.tag i{font-size:11px;color:var(--cyan);}
.hero-visual{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(126,188,255,.28);
  box-shadow:0 22px 50px rgba(2,8,16,.55),0 0 0 1px rgba(45,226,197,.10);
  background:rgba(6,16,29,.9);
}
.hero-visual img{
  width:100%;
  height:330px;
  object-fit:cover;
  filter:saturate(1.02) brightness(.92);
}
.hero-visual .visual-cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:16px 18px;
  background:linear-gradient(180deg,rgba(4,10,18,0),rgba(4,10,18,.92));
  font-size:13px;
  color:#B7CEE2;
  line-height:1.6;
}
.hero-visual .visual-mark{
  position:absolute;
  top:14px;
  right:14px;
  font-size:11.5px;
  letter-spacing:1px;
  color:#03121F;
  background:linear-gradient(135deg,#2DE2C5,#2E7CF6);
  border-radius:999px;
  padding:5px 12px;
  font-weight:700;
}

/* ---------- 通用板块 ---------- */
.section{padding:82px 0 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(26px,2.6vw,34px);
  margin-bottom:14px;
}
.section-head p{
  color:var(--muted);
  font-size:15.5px;
  line-height:1.85;
  margin:0;
}
.kicker{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:2px;
  color:#7FB2FF;
  margin-bottom:12px;
  font-weight:600;
}

/* ---------- Bento ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:20px;
}
.bento-card{
  position:relative;
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  background:rgba(10,26,45,.68);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.bento-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.b-a{grid-column:span 4;}
.b-b{grid-column:span 2;}
.b-c,.b-d,.b-e{grid-column:span 2;}
.bento-media{
  position:relative;
  overflow:hidden;
  height:196px;
  flex:0 0 auto;
}
.bento-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.bento-card:hover .bento-media img{transform:scale(1.04);}
.bento-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,16,29,.10),rgba(6,16,29,.86));
}
.bento-body{
  padding:24px 26px 26px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}
.bento-body h3{
  font-size:19.5px;
  line-height:1.45;
}
.bento-body p{
  color:var(--muted);
  font-size:14.5px;
  line-height:1.8;
  margin:0;
}
.bento-body .link-arrow{margin-top:auto;padding-top:6px;}
.b-b .bento-media{height:210px;}
.b-c .icon-badge,
.b-d .icon-badge,
.b-e .icon-badge{
  width:44px;
  height:44px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-size:17px;
  color:#8BF6E6;
  background:linear-gradient(140deg,rgba(45,226,197,.18),rgba(46,124,246,.16));
  border:1px solid rgba(45,226,197,.28);
  margin-bottom:4px;
}

/* ---------- 流程条 ---------- */
.flow-wrap{
  margin-top:22px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(9,24,42,.82),rgba(6,16,29,.9));
  padding:34px 30px;
  position:relative;
  overflow:hidden;
}
.flow-wrap::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle at 1px 1px, rgba(126,188,255,.10) 1px, transparent 0);
  background-size:28px 28px;
  opacity:.6;
  pointer-events:none;
}
.flow{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.flow-step{
  position:relative;
  padding:20px 18px 18px;
  border-radius:var(--r-md);
  background:rgba(8,20,35,.72);
  border:1px solid rgba(126,188,255,.16);
  transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.flow-step:hover{
  border-color:rgba(45,226,197,.42);
  transform:translateY(-2px);
  background:rgba(11,28,48,.82);
}
.flow-num{
  display:inline-grid;
  place-items:center;
  width:30px;
  height:30px;
  border-radius:9px;
  font-size:13px;
  font-weight:800;
  color:#03121F;
  background:linear-gradient(135deg,#2DE2C5,#2E7CF6);
  margin-bottom:12px;
}
.flow-step h3{font-size:16px;margin-bottom:7px;}
.flow-step p{font-size:13.8px;color:var(--muted);line-height:1.75;margin:0;}
.flow-step:not(:last-child)::after{
  content:"";
  position:absolute;
  top:34px;
  right:-12px;
  width:9px;
  height:9px;
  border-top:1.5px solid rgba(45,226,197,.62);
  border-right:1.5px solid rgba(45,226,197,.62);
  transform:rotate(45deg);
  z-index:2;
}

/* ---------- 限制说明 ---------- */
.limit-grid{
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:22px;
  align-items:stretch;
}
.warn-card{
  border-radius:var(--r-lg);
  border:1px solid rgba(255,179,92,.34);
  background:linear-gradient(150deg,rgba(255,179,92,.10),rgba(10,26,45,.80));
  padding:28px 26px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.warn-card .warn-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17.5px;
  font-weight:800;
  color:#FFD4A3;
}
.warn-card .warn-title i{color:var(--warn);font-size:16px;}
.warn-card ul{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
.warn-card li{
  position:relative;
  padding-left:18px;
  font-size:14.3px;
  line-height:1.8;
  color:#CBD9E6;
}
.warn-card li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--warn);
  box-shadow:0 0 8px rgba(255,179,92,.7);
}
.check-card{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:rgba(10,26,45,.66);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:28px 26px;
}
.check-card h3{font-size:17.5px;margin-bottom:16px;}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.check-item{
  display:flex;
  gap:11px;
  padding:14px 14px;
  border-radius:13px;
  background:rgba(7,18,32,.7);
  border:1px solid rgba(126,188,255,.14);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.check-item:hover{border-color:rgba(45,226,197,.38);background:rgba(10,25,43,.84);}
.check-item i{
  color:var(--cyan);
  font-size:13px;
  margin-top:5px;
  flex:0 0 auto;
}
.check-item span{
  font-size:13.8px;
  line-height:1.72;
  color:#C4D7E8;
}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.faq-item{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(10,26,45,.62);
  overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item[open]{
  border-color:rgba(45,226,197,.40);
  background:rgba(11,28,48,.80);
  box-shadow:0 14px 32px rgba(2,8,16,.42);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:19px 20px;
  font-size:15.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--text);
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::marker{content:"";}
.faq-item summary:hover{color:#9FF6E8;}
.faq-item summary .fa-chevron-down{
  margin-left:auto;
  font-size:12px;
  color:var(--cyan);
  margin-top:6px;
  flex:0 0 auto;
  transition:transform .28s var(--ease);
}
.faq-item[open] summary .fa-chevron-down{transform:rotate(180deg);}
.faq-answer{
  padding:0 20px 20px 20px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:78px;
  border-radius:24px;
  border:1px solid rgba(45,226,197,.26);
  background:
    radial-gradient(620px 260px at 12% 0%, rgba(45,226,197,.16), transparent 62%),
    radial-gradient(620px 300px at 88% 100%, rgba(46,124,246,.22), transparent 66%),
    rgba(8,20,35,.86);
  padding:38px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  box-shadow:var(--shadow-soft);
}
.cta-band h2{
  font-size:clamp(22px,2.2vw,28px);
  margin-bottom:10px;
}
.cta-band p{
  color:var(--muted);
  font-size:14.8px;
  line-height:1.8;
  max-width:640px;
  margin:0;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:92px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(4,10,18,.6),rgba(3,8,14,.96));
  padding:56px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  font-size:13.8px;
  line-height:1.85;
  color:var(--muted);
  max-width:340px;
  margin:0;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:#C9DDF1;
  letter-spacing:.6px;
  margin-bottom:14px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a{
  font-size:13.8px;
  color:var(--muted);
}
.footer-col li a:hover{color:var(--cyan);}
.footer-col p{
  font-size:13.5px;
  line-height:1.9;
  color:var(--muted);
  margin:0;
}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid rgba(126,188,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
  align-items:center;
  justify-content:space-between;
  font-size:12.8px;
  color:rgba(147,169,191,.9);
}
.footer-bottom a{color:rgba(147,169,191,.9);}
.footer-bottom a:hover{color:var(--cyan);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  width:46px;
  height:46px;
  border-radius:14px;
  border:1px solid var(--line-strong);
  background:rgba(10,26,45,.86);
  color:var(--text);
  display:grid;
  place-items:center;
  cursor:pointer;
  z-index:90;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease),border-color .22s var(--ease);
  backdrop-filter:blur(10px);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:rgba(45,226,197,.6);color:var(--cyan);}

/* ---------- 弹层 ---------- */
.modal-mask{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(3,8,14,.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.modal-mask.is-open{display:flex;}
.modal-card{
  width:100%;
  max-width:520px;
  max-height:88vh;
  overflow-y:auto;
  border-radius:22px;
  border:1px solid rgba(126,188,255,.30);
  background:linear-gradient(160deg,rgba(12,30,52,.96),rgba(6,16,29,.98));
  box-shadow:0 30px 80px rgba(2,8,16,.7);
  padding:28px 28px 26px;
  position:relative;
}
.modal-card h3{
  font-size:20px;
  margin-bottom:8px;
}
.modal-card .modal-sub{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:20px;
}
.modal-close{
  position:absolute;
  top:16px;
  right:16px;
  width:34px;
  height:34px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(10,26,45,.8);
  color:var(--muted);
  cursor:pointer;
  display:grid;
  place-items:center;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{color:#fff;border-color:rgba(45,226,197,.5);}
.field{margin-bottom:15px;}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:#C4D7E8;
  margin-bottom:7px;
}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;
  height:46px;
  margin:0;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(6,16,29,.9);
  color:var(--text);
  font-size:14.5px;
  padding:0 14px;
  box-shadow:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:rgba(45,226,197,.6);
  box-shadow:0 0 0 3px rgba(45,226,197,.14);
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,#93A9BF 50%),linear-gradient(135deg,#93A9BF 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.agree{
  display:flex;
  align-items:flex-start;
  gap:9px;
  font-size:12.8px;
  color:var(--muted);
  line-height:1.7;
  margin:4px 0 18px;
}
.agree input[type="checkbox"]{margin:3px 0 0;flex:0 0 auto;accent-color:#2DE2C5;}
.modal-foot{
  font-size:12px;
  color:rgba(147,169,191,.82);
  line-height:1.7;
  margin-top:14px;
}
.modal-card .btn-primary{width:100%;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .wrap{padding:0 22px;}
  .nav-search{max-width:280px;}
  .hero-inner{grid-template-columns:1fr;gap:30px;padding:42px 32px;}
  .hero-visual img{height:280px;}
  .bento{grid-template-columns:repeat(4,1fr);}
  .b-a{grid-column:span 4;}
  .b-b{grid-column:span 2;}
  .b-c,.b-d,.b-e{grid-column:span 2;}
  .limit-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 30px;}
  .section{padding:66px 0 0;}
}
@media screen and (max-width:768px){
  body{background-attachment:scroll;}
  .site-header{position:relative;top:auto;}
  .nav-top{position:sticky;top:0;z-index:101;height:66px;background:rgba(5,14,25,.96);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(126,188,255,.12);margin:0 -22px;padding:0 22px;}
  .nav-search{display:none;}
  .search-toggle{display:grid;}
  .nav-cta{display:none;}
  .brand-mark{width:36px;height:36px;font-size:17px;border-radius:11px;}
  .brand-main{font-size:15.5px;}
  .brand-sub{font-size:10.5px;letter-spacing:1.2px;}
  .channel-bar{border-top:0;padding:8px 0 10px;}
  .channel-scroll{padding:2px 20px;gap:6px;}
  .channel{padding:7px 14px;font-size:13.8px;}
  .search-panel input[type="search"]{height:44px;}
  .crumbs{padding-top:18px;font-size:12.5px;}
  .hero{margin-top:16px;border-radius:20px;}
  .hero-inner{padding:32px 22px 30px;gap:24px;}
  .hero h1{font-size:28px;}
  .hero-lead{font-size:15px;margin-bottom:22px;}
  .hero-visual img{height:230px;}
  .section{padding:54px 0 0;}
  .bento{grid-template-columns:1fr;}
  .b-a,.b-b,.b-c,.b-d,.b-e{grid-column:span 1;}
  .bento-media{height:180px;}
  .flow{grid-template-columns:1fr;}
  .flow-step:not(:last-child)::after{display:none;}
  .check-list{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{margin-top:54px;padding:28px 22px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{margin-top:64px;padding:42px 0 24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .to-top{right:16px;bottom:16px;width:42px;height:42px;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-card{
    max-width:100%;
    max-height:92vh;
    border-radius:22px 22px 0 0;
    padding:26px 20px 24px;
  }
  .nav-top{margin-left:-20px;margin-right:-20px;padding-left:20px;padding-right:20px;}
  .wrap{padding:0 20px;}
}
@media screen and (max-width:520px){
  .wrap{padding:0 16px;}
  .nav-top{margin-left:-16px;margin-right:-16px;padding-left:16px;padding-right:16px;}
  .hero h1{font-size:25px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .section-head h2{font-size:23px;}
  .bento-body{padding:20px 20px 22px;}
  .warn-card,.check-card{padding:22px 20px;}
  .flow-wrap{padding:24px 18px;}
  .channel{padding:7px 13px;font-size:13.2px;}
}

/* roulang page: category3 */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,.66);
  --glass-soft:rgba(10,26,45,.52);
  --line:rgba(126,188,255,.18);
  --line-strong:rgba(126,188,255,.34);
  --blue:#2E7CF6;
  --cyan:#2DE2C5;
  --text:#EAF4FF;
  --muted:#93A9BF;
  --warn:#FFB35C;
  --radius:18px;
  --radius-lg:20px;
  --radius-sm:12px;
  --header-h:128px;
  --shadow:0 18px 48px rgba(2,8,16,.55);
  --shadow-soft:0 10px 28px rgba(2,8,16,.38);
  --ease:cubic-bezier(.3,.7,.3,1);
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(1100px 620px at 82% -10%,rgba(46,124,246,.16),transparent 62%),
    radial-gradient(900px 520px at 6% 12%,rgba(45,226,197,.09),transparent 60%),
    linear-gradient(180deg,var(--bg) 0%,var(--bg-deep) 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(rgba(126,188,255,.12) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 62%,transparent);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 62%,transparent);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;transition:color .2s var(--ease);}
a:hover,a:focus{color:#8BF6E4;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.2px;line-height:1.32;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:1;}
.section{padding:96px 0;position:relative;z-index:1;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--cyan);text-transform:uppercase;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(45,226,197,.32);
  background:rgba(45,226,197,.08);
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:16px;}
.section-head p{color:var(--muted);font-size:16.5px;margin:0;max-width:700px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,16,29,.9);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-top{
  display:flex;align-items:center;gap:20px;
  padding:16px 0 12px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:44px;height:44px;flex-shrink:0;
  display:grid;place-items:center;
  border-radius:14px;
  font-weight:800;font-size:20px;color:#04121F;
  background:linear-gradient(135deg,var(--cyan),var(--blue));
  box-shadow:0 8px 22px rgba(46,124,246,.42);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:19px;font-weight:800;color:var(--text);letter-spacing:.4px;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.16em;margin-top:3px;}
.nav-search{
  display:flex;align-items:center;gap:0;flex:1;max-width:400px;margin-left:8px;
  background:rgba(12,30,52,.72);
  border:1px solid var(--line);
  border-radius:12px;
  padding:4px 4px 4px 16px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search:focus-within{border-color:rgba(45,226,197,.5);box-shadow:0 0 0 3px rgba(45,226,197,.1);}
.nav-search input{
  flex:1;background:transparent;border:0;outline:none;
  color:var(--text);font-size:14.5px;padding:8px 0;margin:0;
  box-shadow:none;
}
.nav-search input::placeholder{color:rgba(147,169,191,.72);}
.search-btn{
  flex-shrink:0;width:38px;height:38px;border:0;cursor:pointer;
  border-radius:9px;color:#04121F;
  background:linear-gradient(135deg,var(--cyan),var(--blue));
  display:grid;place-items:center;font-size:14px;
  transition:transform .2s var(--ease),filter .2s var(--ease);
}
.search-btn:hover{transform:translateY(-1px);filter:brightness(1.08);}
.search-toggle{
  display:none;width:42px;height:42px;border-radius:11px;cursor:pointer;
  border:1px solid var(--line);background:rgba(12,30,52,.72);
  color:var(--text);font-size:15px;
}
.nav-cta{margin-left:auto;white-space:nowrap;}
.search-panel{display:none;padding:0 0 14px;}
.search-panel.is-open{display:block;}
.search-panel form{display:flex;gap:10px;}
.search-panel input{
  flex:1;background:rgba(12,30,52,.8);border:1px solid var(--line);
  border-radius:11px;color:var(--text);padding:11px 16px;font-size:14.5px;margin:0;
}
.search-panel input:focus{outline:none;border-color:rgba(45,226,197,.5);}

.channel-bar{position:relative;padding-bottom:2px;}
.channel-scroll{
  display:flex;gap:8px;overflow-x:auto;padding:2px 2px 10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-bar::before,.channel-bar::after{
  content:"";position:absolute;top:0;bottom:8px;width:28px;pointer-events:none;z-index:2;
}
.channel-bar::before{left:-2px;background:linear-gradient(90deg,rgba(6,16,29,.96),transparent);}
.channel-bar::after{right:-2px;background:linear-gradient(270deg,rgba(6,16,29,.96),transparent);}
.channel{
  white-space:nowrap;font-size:14.5px;font-weight:600;
  padding:8px 18px;border-radius:999px;
  color:var(--muted);
  border:1px solid transparent;
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.channel:hover{
  color:var(--text);transform:translateY(-1px);
  border-color:rgba(45,226,197,.34);
  background:rgba(45,226,197,.06);
}
.channel.is-active{
  color:#FFFFFF;
  background:linear-gradient(135deg,rgba(45,226,197,.2),rgba(46,124,246,.34));
  border-color:rgba(45,226,197,.52);
  box-shadow:0 6px 22px rgba(46,124,246,.26),inset 0 0 0 1px rgba(255,255,255,.04);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  color:#04121F;
  background:linear-gradient(135deg,var(--cyan),var(--blue));
  box-shadow:0 10px 26px rgba(46,124,246,.38);
}
.btn-primary:hover{
  transform:translateY(-2px);filter:brightness(1.07);
  box-shadow:0 14px 34px rgba(46,124,246,.5);
  color:#04121F;
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(46,124,246,.32);}
.btn-ghost{
  color:var(--text);
  background:rgba(12,30,52,.62);
  border-color:var(--line);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  border-color:rgba(45,226,197,.45);
  box-shadow:0 10px 26px rgba(2,8,16,.5);
  color:var(--text);
}
.btn-ghost:active{transform:translateY(1px);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(100deg,rgba(4,10,18,.96) 0%,rgba(5,14,26,.9) 46%,rgba(6,20,38,.72) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(circle at 88% 22%,rgba(45,226,197,.14),transparent 46%),
    repeating-linear-gradient(115deg,rgba(126,188,255,.05) 0 1px,transparent 1px 42px);
  opacity:.85;
}
.hero-inner{position:relative;z-index:2;padding:56px 0 62px;max-width:880px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--cyan);}
.crumbs .sep{opacity:.5;}
.crumbs .now{color:var(--text);font-weight:600;}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.28;margin-bottom:18px;
  background:linear-gradient(180deg,#FFFFFF 30%,#BFDCFA 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:#B9CCE0;line-height:1.85;max-width:720px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- safety strip ---------- */
.safety-strip{
  position:relative;z-index:3;
  margin-top:-28px;
  background:rgba(10,26,45,.82);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px 26px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
}
.safety-strip .item{display:flex;align-items:flex-start;gap:12px;}
.safety-strip i{
  color:var(--cyan);font-size:16px;margin-top:4px;
  filter:drop-shadow(0 0 8px rgba(45,226,197,.5));
}
.safety-strip strong{display:block;font-size:14.5px;margin-bottom:3px;}
.safety-strip span{font-size:13px;color:var(--muted);line-height:1.6;display:block;}

/* ---------- doc layout ---------- */
.doc-grid{
  display:grid;grid-template-columns:250px minmax(0,1fr);
  gap:44px;align-items:start;
}
.doc-nav{
  position:sticky;top:calc(var(--header-h) + 20px);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.doc-nav h2{font-size:14px;color:var(--muted);font-weight:700;letter-spacing:.1em;margin-bottom:14px;}
.doc-nav ol{counter-reset:doc;}
.doc-nav li{counter-increment:doc;margin-bottom:4px;}
.doc-nav a{
  display:flex;gap:10px;align-items:baseline;
  font-size:14.5px;color:#B9CCE0;padding:8px 10px;border-radius:9px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.doc-nav a::before{
  content:counter(doc,decimal-leading-zero);
  font-size:12px;color:rgba(45,226,197,.72);
  font-variant-numeric:tabular-nums;font-weight:700;
}
.doc-nav a:hover{background:rgba(45,226,197,.08);color:var(--text);}
.doc-nav .nav-note{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);line-height:1.7;
}

.doc-body{min-width:0;}
.lead-card{
  display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:26px;align-items:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px;
  margin-bottom:34px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-soft);
}
.lead-card h2{font-size:20px;margin-bottom:10px;}
.lead-card p{color:var(--muted);margin:0;font-size:15px;}
.lead-card figure{
  margin:0;border-radius:14px;overflow:hidden;position:relative;
  border:1px solid var(--line-strong);
  box-shadow:0 12px 30px rgba(2,8,16,.5);
}
.lead-card img{width:100%;height:160px;object-fit:cover;}
.lead-card figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(4,10,18,.12),rgba(4,10,18,.62));
}

.doc-block{
  background:rgba(10,24,40,.82);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:30px 32px;
  margin-bottom:22px;
  scroll-margin-top:calc(var(--header-h) + 24px);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.doc-block:hover{border-color:var(--line-strong);box-shadow:0 14px 34px rgba(2,8,16,.4);}
.doc-block h2{
  font-size:22px;margin-bottom:18px;
  display:flex;align-items:center;gap:12px;
}
.doc-block h2 .num{
  width:34px;height:34px;flex-shrink:0;border-radius:10px;
  display:grid;place-items:center;font-size:14px;font-weight:800;
  color:var(--cyan);background:rgba(45,226,197,.1);
  border:1px solid rgba(45,226,197,.3);
  font-variant-numeric:tabular-nums;
}
.doc-block dl{margin:0;}
.doc-block dt{
  font-weight:700;font-size:16.5px;color:var(--text);
  margin:0 0 8px;padding-left:16px;position:relative;
}
.doc-block dt::before{
  content:"";position:absolute;left:0;top:.62em;
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 10px rgba(45,226,197,.7);
}
.doc-block dd{
  margin:0 0 20px;padding-left:16px;
  color:#A9BDD2;font-size:15.5px;line-height:1.88;
}
.doc-block dd:last-child{margin-bottom:0;}
.doc-block dd strong{color:#D9E9FA;}

/* ---------- warning cards ---------- */
.warn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.warn-card{
  position:relative;
  background:linear-gradient(180deg,rgba(255,179,92,.1),rgba(10,26,45,.8));
  border:1px solid rgba(255,179,92,.32);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.warn-card:hover{transform:translateY(-3px);border-color:rgba(255,179,92,.5);box-shadow:0 16px 36px rgba(2,8,16,.48);}
.warn-card i{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  color:var(--warn);background:rgba(255,179,92,.14);
  border:1px solid rgba(255,179,92,.34);
  font-size:17px;margin-bottom:16px;
}
.warn-card h3{font-size:17.5px;margin-bottom:10px;}
.warn-card p{color:var(--muted);font-size:14.5px;margin:0 0 14px;line-height:1.8;}
.warn-card .tip{
  display:inline-block;font-size:13px;color:#FFD5A5;
  padding:5px 12px;border-radius:999px;
  background:rgba(255,179,92,.12);
  border:1px solid rgba(255,179,92,.28);
}

/* ---------- faq ---------- */
.faq-list{max-width:900px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 24px;font-size:16px;font-weight:700;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--cyan);
  transition:transform .28s var(--ease);
  flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item[open]{border-color:rgba(45,226,197,.38);background:rgba(10,26,45,.78);}
.faq-item .faq-body{padding:0 24px 22px;color:#A9BDD2;font-size:15.5px;line-height:1.85;}
.faq-item .faq-body p:last-child{margin-bottom:0;}

/* ---------- cta band ---------- */
.cta-band{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:34px;align-items:center;
  background:
    radial-gradient(700px 260px at 88% 20%,rgba(45,226,197,.16),transparent 66%),
    linear-gradient(135deg,rgba(12,34,58,.92),rgba(8,20,36,.92));
  border:1px solid rgba(45,226,197,.28);
  border-radius:var(--radius-lg);
  padding:42px 44px;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:12px;}
.cta-band p{color:var(--muted);margin:0;max-width:600px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

.privacy-note{
  margin-top:22px;padding:18px 22px;
  border:1px dashed var(--line-strong);
  border-radius:14px;
  font-size:13.5px;color:var(--muted);line-height:1.8;
  background:rgba(8,20,36,.5);
}
.privacy-note a{color:var(--cyan);}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(4,10,18,.6),rgba(4,10,18,.96));
  padding:64px 0 26px;margin-top:20px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:36px;border-bottom:1px solid var(--line);
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;margin:16px 0 0;max-width:360px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:14px;letter-spacing:.06em;}
.footer-col ul li{margin-bottom:9px;}
.footer-col a{color:var(--muted);font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-col p{color:var(--muted);font-size:13.5px;line-height:1.9;margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  padding-top:22px;font-size:13px;color:rgba(147,169,191,.82);
}
.footer-bottom a{color:rgba(147,169,191,.82);}
.footer-bottom a:hover{color:var(--cyan);}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:80;
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(10,26,45,.9);
  color:var(--cyan);cursor:pointer;font-size:15px;
  display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),box-shadow .28s var(--ease),visibility .28s;
  backdrop-filter:blur(10px);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{box-shadow:0 0 0 3px rgba(45,226,197,.14),0 12px 28px rgba(2,8,16,.5);}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px;}
.modal.is-open{display:flex;}
.modal-mask{
  position:absolute;inset:0;
  background:rgba(3,9,17,.74);
  backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px);
}
.modal-card{
  position:relative;z-index:2;
  width:min(580px,100%);max-height:90vh;overflow:auto;
  background:rgba(10,26,45,.95);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:30px 30px 26px;
  box-shadow:var(--shadow);
}
.modal-card h3{font-size:21px;margin-bottom:8px;}
.modal-card .modal-sub{color:var(--muted);font-size:14px;margin-bottom:22px;}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:36px;height:36px;border-radius:10px;cursor:pointer;
  border:1px solid var(--line);background:rgba(12,30,52,.8);
  color:var(--muted);font-size:14px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{color:var(--text);border-color:rgba(45,226,197,.45);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:#C6D9EC;margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;margin:0;
  background:rgba(6,16,29,.92);
  border:1px solid var(--line);
  border-radius:11px;
  color:var(--text);
  font-size:14.5px;font-family:inherit;
  padding:11px 14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{resize:vertical;min-height:88px;line-height:1.75;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(45,226,197,.62);
  box-shadow:0 0 0 3px rgba(45,226,197,.12);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7;margin:6px 0 20px;}
.check input{width:16px;height:16px;margin-top:3px;flex-shrink:0;accent-color:#2DE2C5;}
.modal-card .btn-primary{width:100%;}
.modal-foot{font-size:12.5px;color:rgba(147,169,191,.8);margin-top:14px;line-height:1.7;text-align:center;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--header-h:120px;}
  .wrap{padding:0 20px;}
  .section{padding:76px 0;}
  .safety-strip{grid-template-columns:repeat(2,1fr);gap:20px;}
  .doc-grid{grid-template-columns:1fr;gap:28px;}
  .doc-nav{position:static;}
  .doc-nav ol{display:flex;flex-wrap:wrap;gap:6px;}
  .doc-nav li{margin:0;}
  .doc-nav a{padding:6px 12px;border:1px solid var(--line);border-radius:999px;}
  .doc-nav a::before{display:none;}
  .warn-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:34px 30px;}
  .nav-search{max-width:280px;}
}
@media (max-width:767px){
  :root{--header-h:64px;}
  .site-header{position:static;}
  .nav-top{
    position:sticky;top:0;z-index:70;
    background:rgba(6,16,29,.96);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    margin:0 -20px;padding:12px 20px;
    gap:12px;border-bottom:1px solid var(--line);
  }
  .nav-search{display:none;}
  .search-toggle{display:grid;place-items:center;margin-left:auto;}
  .nav-cta{padding:10px 16px;font-size:13.5px;margin-left:0;}
  .brand-mark{width:38px;height:38px;font-size:17px;border-radius:11px;}
  .brand-main{font-size:16.5px;}
  .brand-sub{font-size:10.5px;letter-spacing:.1em;}
  .channel-scroll{padding:4px 2px 10px;}
  .channel{font-size:13.5px;padding:7px 14px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .hero-inner{padding:34px 0 46px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .safety-strip{margin-top:0;border-radius:16px;padding:20px;grid-template-columns:1fr;}
  .lead-card{grid-template-columns:1fr;padding:22px;}
  .lead-card img{height:150px;}
  .doc-block{padding:24px 20px;}
  .doc-block h2{font-size:19px;}
  .doc-block dt{font-size:15.5px;}
  .doc-block dd{font-size:15px;}
  .warn-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;gap:22px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .modal{padding:0;align-items:flex-end;}
  .modal-card{width:100%;max-height:92vh;border-radius:20px 20px 0 0;padding:26px 20px 22px;}
  .field-row{grid-template-columns:1fr;gap:0;}
  .to-top{right:16px;bottom:16px;width:42px;height:42px;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .nav-top{margin:0 -16px;padding:10px 16px;}
  .nav-cta{display:none;}
  .page-hero h1{font-size:26px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-item .faq-body{padding:0 18px 18px;font-size:15px;}
}

/* roulang page: category4 */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,.66);
  --glass-soft:rgba(10,26,45,.56);
  --text:#EAF4FF;
  --muted:#93A9BF;
  --line:rgba(126,188,255,.18);
  --line-strong:rgba(126,188,255,.32);
  --primary:#2E7CF6;
  --accent:#2DE2C5;
  --warn:#FFB35C;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 26px 60px -34px rgba(0,0,0,.95);
  --shadow-soft:0 14px 34px -22px rgba(0,0,0,.9);
  --wrap:1240px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 84% -6%,rgba(46,124,246,.20),transparent 62%),
    radial-gradient(700px 460px at 4% 6%,rgba(45,226,197,.10),transparent 60%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.5;
  background-image:
    linear-gradient(rgba(126,188,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(126,188,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 12%,transparent 76%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 12%,transparent 76%);
}
h1,h2,h3,h4,h5{font-family:var(--font);color:var(--text);margin:0;font-weight:800;letter-spacing:.2px}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{max-width:100%;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
input,select,textarea{font-family:inherit;font-size:15px;margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,13,24,.86);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.nav-top{display:flex;align-items:center;gap:18px;padding:14px 0}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:44px;height:44px;flex:0 0 auto;
  display:grid;place-items:center;
  border-radius:14px;
  font-size:20px;font-weight:800;color:#04121F;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  box-shadow:0 0 0 1px rgba(45,226,197,.35),0 12px 28px -14px rgba(46,124,246,.95);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:19px;font-weight:800;letter-spacing:.6px;color:var(--text)}
.brand-sub{font-size:11.5px;letter-spacing:2.4px;color:var(--muted)}
.nav-search{
  margin-left:auto;
  display:flex;align-items:center;gap:8px;
  flex:1 1 260px;min-width:200px;max-width:340px;
  padding:5px 6px 5px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(8,20,35,.9);
  transition:border-color .22s,box-shadow .22s;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.55);box-shadow:0 0 0 3px rgba(45,226,197,.12)}
.nav-search input[type="search"]{
  flex:1 1 auto;width:100%;
  margin:0;padding:6px 0;height:auto;
  background:transparent;border:0;box-shadow:none;
  color:var(--text);font-size:14px;
}
.nav-search input[type="search"]::placeholder{color:#6F8399}
.nav-search input[type="search"]:focus{outline:none;box-shadow:none;background:transparent}
.search-btn{
  width:34px;height:34px;flex:0 0 auto;
  display:grid;place-items:center;
  border:0;border-radius:50%;
  color:#04121F;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  transition:transform .2s,filter .2s;
}
.search-btn:hover{transform:translateY(-1px);filter:brightness(1.06)}
.search-toggle{
  display:none;
  width:40px;height:40px;margin-left:auto;
  place-items:center;
  border-radius:12px;border:1px solid var(--line);
  background:rgba(10,26,45,.8);color:var(--text);cursor:pointer;
}
.search-toggle:hover{border-color:rgba(45,226,197,.5)}
.search-panel{display:none;padding:0 0 14px}
.search-panel.is-open{display:block}
.search-panel form{display:flex;gap:10px}
.search-panel input[type="search"]{
  flex:1 1 auto;margin:0;height:44px;
  border-radius:12px;border:1px solid var(--line);
  background:rgba(8,20,35,.92);color:var(--text);padding:0 14px;
}
.search-panel input[type="search"]:focus{outline:none;border-color:rgba(45,226,197,.55);box-shadow:0 0 0 3px rgba(45,226,197,.12)}

.channel-bar{position:relative;border-top:1px solid rgba(126,188,255,.10)}
.channel-bar::before,.channel-bar::after{
  content:"";position:absolute;top:0;bottom:0;width:26px;z-index:2;pointer-events:none;
}
.channel-bar::before{left:-2px;background:linear-gradient(90deg,rgba(5,13,24,.96),transparent)}
.channel-bar::after{right:-2px;background:linear-gradient(270deg,rgba(5,13,24,.96),transparent)}
.channel-scroll{display:flex;gap:6px;overflow-x:auto;padding:8px 0 10px;scrollbar-width:none}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
  flex:0 0 auto;
  padding:9px 17px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14.5px;color:var(--muted);
  white-space:nowrap;
  transition:color .2s,transform .2s,background .2s,border-color .2s,box-shadow .2s;
}
.channel:hover{color:var(--text);transform:translateY(-1px);background:rgba(126,188,255,.08);border-color:var(--line)}
.channel.is-active{
  color:#04121F;font-weight:700;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  box-shadow:0 0 22px -8px rgba(45,226,197,.95);
}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;
  border:1px solid transparent;border-radius:12px;
  font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,filter .2s;
}
.btn-primary{
  color:#04121F;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  box-shadow:0 10px 30px -14px rgba(45,226,197,.9);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 18px 38px -14px rgba(45,226,197,.95)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  color:var(--text);
  background:rgba(10,26,45,.62);
  border-color:var(--line);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(45,226,197,.5);background:rgba(14,34,56,.85)}
.btn-ghost:active{transform:translateY(1px)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;
}
.btn[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}
.nav-cta{padding:11px 20px;font-size:14.5px;flex:0 0 auto}

/* ============ 板块基础 ============ */
.page-main{position:relative;z-index:1}
.section{padding:82px 0}
.section--tight{padding:56px 0}
.section-head{max-width:780px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:1.4px;color:var(--accent);
  border:1px solid rgba(45,226,197,.32);
  background:rgba(45,226,197,.08);
}
.section-head h2{font-size:clamp(24px,2.5vw,34px);line-height:1.36;margin:14px 0 12px}
.section-head p{color:var(--muted);margin:0;font-size:15.5px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:20px 0 0;font-size:13.5px;color:var(--muted);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:#C8DBEF}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;isolation:isolate;
  display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;
  padding:38px 0 10px;
}
.cat-hero::before{
  content:"";position:absolute;inset:-30px -26px -10px;z-index:-1;
  border-radius:28px;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.15;
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 10%,transparent 78%);
  mask-image:radial-gradient(circle at 30% 40%,#000 10%,transparent 78%);
}
.cat-hero h1{
  font-size:clamp(28px,3.1vw,42px);
  line-height:1.32;
  margin:16px 0 16px;
  letter-spacing:.4px;
}
.cat-hero h1 .hl{color:var(--accent)}
.hero-lead{color:var(--muted);font-size:16.5px;line-height:1.85;max-width:58ch;margin:0 0 24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tags span{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13px;color:#B9CDE2;
  border:1px solid var(--line);
  background:rgba(10,26,45,.55);
}
.hero-tags i{color:var(--accent);font-size:12px}

.hero-card{
  position:relative;
  padding:14px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.hero-card img{width:100%;height:286px;object-fit:cover;border-radius:14px}
.hero-card .shot-note{
  position:absolute;left:26px;bottom:26px;right:26px;
  padding:12px 16px;border-radius:12px;
  font-size:13px;color:#D5E6F7;
  background:rgba(6,16,29,.82);
  border:1px solid rgba(45,226,197,.3);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.hero-card .shot-note strong{color:var(--accent);font-weight:700}

/* ============ 兼容矩阵 ============ */
.compat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.compat-card{
  position:relative;
  padding:24px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-soft);
  transition:transform .22s,border-color .22s,box-shadow .22s,background .22s;
}
.compat-card:hover{transform:translateY(-3px);border-color:var(--line-strong);background:rgba(13,32,54,.78);box-shadow:0 22px 44px -26px rgba(0,0,0,.95)}
.compat-card .ico-box{
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:12px;font-size:17px;color:var(--accent);
  border:1px solid rgba(45,226,197,.28);
  background:rgba(45,226,197,.08);
  margin-bottom:16px;
}
.compat-card h3{font-size:18px;margin:0 0 8px;line-height:1.45}
.compat-card p{color:var(--muted);font-size:14.5px;line-height:1.8;margin:0}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(126,188,255,.12)}
.card-foot .hint{font-size:12.5px;color:#7E93A9}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.4px;
  border:1px solid transparent;
}
.badge-ok{color:#04121F;background:linear-gradient(135deg,var(--accent),#4FE0C6)}
.badge-mid{color:#BFE3FF;background:rgba(46,124,246,.18);border-color:rgba(46,124,246,.42)}
.badge-low{color:#FFD5A3;background:rgba(255,179,92,.12);border-color:rgba(255,179,92,.38)}

/* ============ 自查清单 ============ */
.check-grid{display:grid;grid-template-columns:1.45fr .55fr;gap:22px;align-items:start}
.panel{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-soft);
  padding:28px;
}
.panel h3{font-size:19px;margin:0 0 6px}
.panel .panel-sub{color:var(--muted);font-size:14px;margin:0 0 20px}
.check-list{display:grid;gap:13px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:#CFE1F2;line-height:1.72;
  padding:12px 14px;border-radius:12px;
  background:rgba(8,20,35,.55);
  border:1px solid rgba(126,188,255,.10);
}
.check-list i{color:var(--accent);font-size:14px;margin-top:5px;flex:0 0 auto}
.check-list b{color:var(--text);font-weight:700}
.tip-card{
  border-radius:var(--radius);
  border:1px solid rgba(45,226,197,.28);
  background:linear-gradient(150deg,rgba(46,124,246,.16),rgba(45,226,197,.08)),var(--panel);
  padding:26px;
  box-shadow:var(--shadow-soft);
}
.tip-card h3{font-size:17.5px;margin:0 0 12px}
.tip-card p{color:#B7CADD;font-size:14.5px;line-height:1.85;margin:0 0 16px}
.tip-card .tip-list{display:grid;gap:10px;margin-bottom:20px}
.tip-card .tip-list li{color:var(--muted);font-size:14px;display:flex;gap:9px}
.tip-card .tip-list i{color:var(--accent);font-size:12px;margin-top:6px}
.text-link{color:var(--accent);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:7px}
.text-link:hover{color:#7BF2DF}
.text-link i{font-size:12px;transition:transform .2s}
.text-link:hover i{transform:translateX(4px)}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:step}
.step-card{
  position:relative;
  padding:26px 24px 24px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--glass-soft);
  transition:transform .22s,border-color .22s;
}
.step-card:hover{transform:translateY(-3px);border-color:rgba(45,226,197,.4)}
.step-num{
  display:inline-grid;place-items:center;
  width:34px;height:34px;border-radius:10px;
  font-size:14px;font-weight:800;color:#04121F;
  background:linear-gradient(135deg,var(--accent),var(--primary));
  margin-bottom:16px;
}
.step-card h3{font-size:17px;margin:0 0 8px}
.step-card p{color:var(--muted);font-size:14.5px;line-height:1.8;margin:0}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(10,26,45,.62);
  overflow:hidden;
  transition:border-color .22s,background .22s;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{background:rgba(12,30,50,.8);border-color:rgba(45,226,197,.32)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .ico{
  flex:0 0 auto;width:26px;height:26px;display:grid;place-items:center;
  border-radius:50%;font-size:11px;color:var(--accent);
  border:1px solid rgba(45,226,197,.35);
  transition:transform .26s ease,background .26s;
}
.faq-item[open] summary .ico{transform:rotate(45deg);background:rgba(45,226,197,.14)}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.85}

/* ============ CTA 与隐私 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  padding:36px 40px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(45,226,197,.3);
  background:linear-gradient(120deg,rgba(46,124,246,.20),rgba(45,226,197,.10)),var(--panel);
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(21px,2vw,27px);margin:0 0 10px;line-height:1.4}
.cta-band p{color:#B7CADD;font-size:14.5px;margin:0;max-width:56ch}
.privacy-strip{
  margin-top:22px;
  padding:18px 24px;
  border-radius:14px;
  border:1px dashed rgba(126,188,255,.22);
  background:rgba(8,20,35,.5);
  color:#8CA1B7;font-size:13.5px;line-height:1.9;
}
.privacy-strip a{color:var(--accent)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  margin-top:56px;
  padding:56px 0 26px;
  background:var(--bg-deep);
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:38px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.9;margin:0;max-width:36ch}
.footer-col h4{font-size:14px;letter-spacing:1.2px;color:var(--text);margin:0 0 16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--muted);font-size:14.5px}
.footer-col a:hover{color:var(--accent)}
.footer-col p{color:var(--muted);font-size:14px;line-height:1.95;margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 20px;justify-content:space-between;align-items:center;
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(126,188,255,.12);
  color:#7C8EA3;font-size:13px;
}
.footer-bottom a{color:#9CB2C8}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:26px;z-index:90;
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(10,26,45,.88);
  color:var(--accent);
  cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s,transform .25s,visibility .25s,border-color .25s;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(45,226,197,.7);box-shadow:0 0 22px -8px rgba(45,226,197,.9)}

/* ============ 表单弹层 ============ */
.modal{position:fixed;inset:0;z-index:130;display:none}
.modal.is-open{display:block}
.modal-mask{
  position:absolute;inset:0;
  background:rgba(3,8,15,.74);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border:0;padding:0;width:100%;height:100%;cursor:pointer;
}
.modal-card{
  position:relative;
  width:calc(100% - 32px);max-width:540px;
  margin:6vh auto;
  padding:30px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:rgba(10,26,45,.94);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  box-shadow:0 40px 90px -30px rgba(0,0,0,.95);
  max-height:88vh;overflow-y:auto;
}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:34px;height:34px;display:grid;place-items:center;
  border-radius:50%;border:1px solid var(--line);
  background:rgba(8,20,35,.9);color:var(--muted);cursor:pointer;
  transition:color .2s,border-color .2s;
}
.modal-close:hover{color:var(--text);border-color:rgba(45,226,197,.6)}
.modal-card h2{font-size:22px;margin:0 0 8px}
.modal-card .modal-sub{color:var(--muted);font-size:14px;margin:0 0 22px;line-height:1.8}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:#B9CDE2;margin-bottom:7px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(6,16,29,.9);
  color:var(--text);
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{min-height:92px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#647A90}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:rgba(45,226,197,.62);box-shadow:0 0 0 3px rgba(45,226,197,.14);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7E93A9 50%),linear-gradient(135deg,#7E93A9 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.7;margin:6px 0 18px}
.consent input{width:16px;height:16px;margin-top:4px;accent-color:#2DE2C5;flex:0 0 auto}
.consent a{color:var(--accent)}
.form-note{font-size:12.5px;color:#7E93A9;margin:14px 0 0;line-height:1.8}
.modal-card .btn{width:100%}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .wrap{padding:0 22px}
  .nav-search{display:none}
  .search-toggle{display:grid}
  .nav-cta{padding:10px 16px;font-size:14px}
  .cat-hero{grid-template-columns:1fr;gap:34px;padding-top:28px}
  .hero-card img{height:250px}
  .compat-grid{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:66px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 28px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .site-header{position:static}
  .nav-top{flex-wrap:wrap;gap:12px;padding:12px 0}
  .brand-main{font-size:17.5px}
  .brand-sub{font-size:10.5px;letter-spacing:1.8px}
  .nav-cta{order:3;margin-left:auto}
  .search-toggle{order:2}
  .channel-scroll{padding:6px 0 9px}
  .channel{padding:8px 14px;font-size:13.5px}
  .compat-grid{grid-template-columns:1fr}
  .hero-card img{height:214px}
  .hero-tags{margin-top:20px}
  .panel,.tip-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .section{padding:54px 0}
  .section-head{margin-bottom:26px}
  .modal-card{margin:3vh auto;padding:24px;max-height:92vh}
  .to-top{right:16px;bottom:18px;width:42px;height:42px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .cat-hero h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .hero-card img{height:190px}
  .hero-card .shot-note{left:20px;right:20px;bottom:20px;font-size:12px}
  .faq-item summary{padding:16px 16px;font-size:15px}
  .faq-body{padding:0 16px 18px;font-size:14.5px}
  .cta-band{padding:24px 20px;gap:20px}
  .cta-band .btn{width:100%}
}

/* roulang page: category5 */
:root{
  --bg:#06101D;
  --bg-deep:#040A12;
  --panel:#0A1828;
  --glass:rgba(10,26,45,.66);
  --glass-soft:rgba(12,30,52,.55);
  --primary:#2E7CF6;
  --accent:#2DE2C5;
  --text:#EAF4FF;
  --muted:#93A9BF;
  --line:rgba(126,188,255,.18);
  --line-strong:rgba(126,188,255,.34);
  --warn:#FFB35C;
  --radius:18px;
  --radius-sm:12px;
  --nav-h:72px;
  --shadow:0 24px 60px rgba(2,8,18,.55);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 16% 10%, rgba(46,124,246,.16), transparent 44%),
    radial-gradient(circle at 88% 6%, rgba(45,226,197,.10), transparent 40%),
    radial-gradient(rgba(126,188,255,.10) 1px, transparent 1px);
  background-size:auto,auto,26px 26px;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(45,226,197,.28);color:#04121c;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.site-header,main,.site-footer{position:relative;z-index:1;}

/* 容器 */
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(4,10,18,.84);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-top{display:flex;align-items:center;gap:18px;min-height:var(--nav-h);}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--text);flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  font-weight:800;font-size:19px;color:#04121c;
  background:linear-gradient(140deg,var(--accent),var(--primary));
  box-shadow:0 8px 22px rgba(45,226,197,.28);
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.04em;}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.14em;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(12,28,48,.72);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 6px 5px 16px;
  max-width:340px;width:100%;
  margin-left:auto;
  transition:border-color .2s,box-shadow .2s;
}
.nav-search:focus-within{border-color:rgba(45,226,197,.42);box-shadow:0 0 0 3px rgba(45,226,197,.12);}
.nav-search input[type="search"]{
  flex:1;min-width:0;background:transparent;border:0;margin:0;
  padding:8px 0;font-size:14px;color:var(--text);box-shadow:none;
}
.nav-search input[type="search"]::placeholder{color:#6f849a;}
.nav-search input[type="search"]:focus{outline:none;box-shadow:none;}
.search-btn{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(120deg,var(--accent),var(--primary));
  color:#04121c;font-size:14px;
  transition:transform .18s,filter .2s;
}
.search-btn:hover{transform:translateY(-1px);filter:brightness(1.08);}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(12,28,48,.7);
  color:var(--text);font-size:15px;flex-shrink:0;
}
.search-toggle:hover{border-color:rgba(45,226,197,.45);color:var(--accent);}
.nav-cta{flex-shrink:0;}
.search-panel{display:none;padding:0 0 14px;}
.search-panel.is-open{display:block;}
.search-panel form{display:flex;gap:10px;}
.search-panel input[type="search"]{
  flex:1;min-width:0;background:rgba(6,16,29,.9);
  border:1px solid var(--line);border-radius:10px;
  padding:11px 14px;font-size:14.5px;margin:0;
}
.search-panel input[type="search"]:focus{border-color:rgba(45,226,197,.5);outline:none;box-shadow:0 0 0 3px rgba(45,226,197,.14);}

/* 频道条 */
.channel-bar{border-top:1px solid rgba(126,188,255,.10);}
.channel-scroll{
  display:flex;gap:6px;overflow-x:auto;
  padding:6px 0 10px;
  scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:999px;
  font-size:14px;color:var(--muted);white-space:nowrap;
  border:1px solid transparent;
  transition:background .2s,color .2s,transform .18s,border-color .2s;
}
.channel:hover{color:var(--text);background:rgba(45,226,197,.08);transform:translateY(-1px);}
.channel.is-active{
  color:#03121c;font-weight:700;
  background:linear-gradient(120deg,var(--accent),var(--primary));
  box-shadow:0 8px 22px rgba(46,124,246,.32);
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:12px;
  font-size:15px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s,box-shadow .25s,background .25s,border-color .25s,filter .2s;
}
.btn-primary{
  background:linear-gradient(120deg,var(--accent),var(--primary));
  color:#03121c;
  box-shadow:0 10px 26px rgba(46,124,246,.30);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(45,226,197,.36);filter:brightness(1.06);color:#03121c;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(46,124,246,.28);}
.btn-ghost{
  background:rgba(12,30,52,.6);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(45,226,197,.5);background:rgba(20,44,74,.72);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}

/* 徽章与面板 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);background:rgba(45,226,197,.10);
  border:1px solid rgba(45,226,197,.28);
}
.panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}

/* 面包屑 */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:#8296ab;margin-bottom:22px;
}
.breadcrumb a{color:#a9bfd4;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* 首屏 */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 68px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(4,10,18,.55),rgba(6,16,29,.96));
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.20;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 76% 18%, rgba(45,226,197,.13), transparent 52%),
    radial-gradient(circle at 8% 88%, rgba(46,124,246,.16), transparent 55%),
    linear-gradient(180deg, rgba(4,10,18,.45), rgba(6,16,29,.15));
}
.page-hero .wrap{position:relative;z-index:2;}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;}
.hero-copy h1{
  font-size:clamp(28px,3.4vw,42px);
  font-weight:800;line-height:1.32;letter-spacing:-.01em;
  margin-top:16px;
}
.hero-copy .lead{margin-top:16px;color:#b6c9dc;font-size:16px;max-width:580px;line-height:1.8;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-points{
  margin-top:28px;display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13.5px;color:var(--muted);
}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points li::before{content:"✓";color:var(--accent);font-weight:800;font-size:12px;}
.hero-card{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 30px 70px rgba(2,8,18,.6);
  background:var(--panel);
}
.hero-card img{width:100%;height:320px;object-fit:cover;}
.hero-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,10,18,.05) 30%,rgba(4,10,18,.82) 100%);
  pointer-events:none;
}
.hero-card-note{
  position:absolute;left:20px;right:20px;bottom:18px;z-index:2;
  font-size:13px;color:#cfe2f3;line-height:1.6;
}
.hero-card-note strong{display:block;font-size:14.5px;color:var(--text);margin-bottom:2px;}

/* 区块 */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:800;line-height:1.32;margin-top:14px;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.8;}

/* 表单 + 信息卡 */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start;}
.form-card{padding:34px;}
.form-card h2{font-size:24px;font-weight:800;line-height:1.35;}
.form-card .form-desc{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.8;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:13.5px;font-weight:600;color:#c3d7ea;letter-spacing:.02em;}
.field label .req{color:var(--warn);margin-left:2px;}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;margin:0;
  background:rgba(6,16,29,.88);
  border:1px solid var(--line);
  border-radius:10px;
  padding:12px 14px;
  font-size:14.5px;color:var(--text);
  transition:border-color .2s,box-shadow .2s,background .2s;
  box-shadow:none;
}
.field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7f95ab 50%),linear-gradient(135deg,#7f95ab 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:38px;}
.field select option{background:#0A1828;color:var(--text);}
.field textarea{resize:vertical;min-height:96px;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#6f849a;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:rgba(45,226,197,.55);
  box-shadow:0 0 0 3px rgba(45,226,197,.14);
  background:rgba(8,20,36,.95);
}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:4px 0 22px;font-size:13.5px;color:var(--muted);line-height:1.7;}
.check-row input[type="checkbox"]{width:17px;height:17px;margin:4px 0 0;accent-color:#2DE2C5;flex-shrink:0;}
.check-row a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.form-status{display:none;margin-top:14px;font-size:13.5px;color:var(--accent);}
.form-status.is-show{display:block;}

.info-card{padding:32px;}
.info-card h3{font-size:16px;font-weight:800;letter-spacing:.02em;margin-bottom:12px;}
.info-card h3 + .info-list{margin-bottom:22px;}
.info-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;font-size:14.5px;color:#b9cbdd;line-height:1.7;
  border-bottom:1px dashed rgba(126,188,255,.14);
}
.info-list li:last-child{border-bottom:0;}
.info-list li::before{
  content:"";width:7px;height:7px;border-radius:50%;flex-shrink:0;
  margin-top:9px;background:var(--accent);box-shadow:0 0 10px rgba(45,226,197,.6);
}
.info-divider{height:1px;background:var(--line);margin:8px 0 22px;}
.info-text{font-size:14px;color:var(--muted);line-height:1.8;}
.info-text.small{font-size:13px;color:#7f95ab;}

/* 三卡 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{padding:30px 28px;transition:transform .22s,border-color .22s,background .22s;}
.card:hover{transform:translateY(-3px);border-color:rgba(45,226,197,.32);background:rgba(12,30,52,.78);}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(45,226,197,.10);border:1px solid rgba(45,226,197,.26);
  color:var(--accent);font-size:17px;margin-bottom:18px;
}
.card h3{font-size:18px;font-weight:800;line-height:1.45;margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.flow-item{
  position:relative;padding:30px 26px;
  background:var(--glass-soft);
  border:1px solid var(--line);
  border-radius:16px;
  transition:border-color .22s,transform .22s;
}
.flow-item:hover{border-color:rgba(45,226,197,.3);transform:translateY(-3px);}
.flow-num{
  display:inline-grid;place-items:center;
  width:42px;height:42px;border-radius:13px;
  font-weight:800;font-size:15px;letter-spacing:.04em;
  color:var(--accent);background:rgba(45,226,197,.10);
  border:1px solid rgba(45,226,197,.30);
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.flow-item p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto;}
.faq{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .2s,background .2s;
}
.faq:hover{border-color:rgba(126,188,255,.30);}
.faq[open]{border-color:rgba(45,226,197,.34);background:rgba(12,30,52,.82);}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:700;line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";flex-shrink:0;
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  font-size:17px;font-weight:400;line-height:1;
  color:var(--accent);background:rgba(45,226,197,.10);
  border:1px solid rgba(45,226,197,.26);
  transition:transform .22s;
}
.faq[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.85;}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:44px 46px;border-radius:24px;
  background:linear-gradient(120deg,rgba(46,124,246,.20),rgba(45,226,197,.12));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,226,197,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.35;}
.cta-band p{margin-top:10px;color:#b6c9dc;font-size:15px;max-width:620px;line-height:1.8;}
.cta-band .btn{position:relative;z-index:2;flex-shrink:0;}

/* 页脚 */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  margin-top:20px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:800;letter-spacing:.1em;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:var(--muted);font-size:14.5px;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 38px;
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  font-size:13px;color:#7e93a8;
}
.footer-bottom a{color:#9db2c7;}
.footer-bottom a:hover{color:var(--accent);}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:rgba(10,26,45,.92);
  border:1px solid var(--line-strong);
  color:var(--accent);font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,transform .25s,visibility .25s,border-color .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:rgba(45,226,197,.55);}

/* 弹层 */
.modal-mask{
  position:fixed;inset:0;z-index:200;
  display:none;align-items:center;justify-content:center;
  padding:24px;
  background:rgba(3,8,15,.74);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.modal-mask.is-open{display:flex;}
.modal-card{
  position:relative;
  width:100%;max-width:540px;max-height:88vh;overflow:auto;
  padding:32px;
  background:rgba(10,26,45,.96);
  border:1px solid var(--line-strong);
  border-radius:22px;
  box-shadow:0 40px 90px rgba(0,0,0,.6);
}
.modal-card h2{font-size:21px;font-weight:800;padding-right:36px;}
.modal-card .modal-desc{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.75;}
.modal-close{
  position:absolute;right:18px;top:18px;
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(12,28,48,.7);
  color:var(--muted);font-size:14px;
}
.modal-close:hover{color:var(--accent);border-color:rgba(45,226,197,.45);}
.modal-card form{margin-top:22px;}

/* 响应式 */
@media (max-width:1024px){
  .wrap{padding:0 24px;}
  .nav-search{display:none;}
  .search-toggle{display:flex;margin-left:auto;}
  .section{padding:76px 0;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-card img{height:280px;}
  .split{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px;}
}
@media (max-width:768px){
  .wrap{padding:0 20px;}
  .site-header{position:static;}
  .nav-top{position:sticky;top:0;z-index:90;background:rgba(4,10,18,.94);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);min-height:64px;gap:12px;}
  .section{padding:60px 0;}
  .section-head{margin-bottom:32px;}
  .page-hero{padding:32px 0 48px;}
  .hero-copy .lead{font-size:15px;}
  .form-card,.info-card{padding:24px;}
  .form-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px;}
  .faq summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;font-size:14.5px;}
  .footer-grid{padding:44px 0 32px;}
}
@media (max-width:576px){
  .wrap{padding:0 16px;}
  .brand-mark{width:36px;height:36px;font-size:16px;border-radius:11px;}
  .brand-main{font-size:15px;}
  .brand-sub{font-size:11px;letter-spacing:.08em;}
  .nav-cta{padding:9px 14px;font-size:13px;border-radius:10px;}
  .hero-card img{height:220px;}
  .hero-actions .btn{flex:1 1 auto;justify-content:center;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{font-size:12.5px;}
  .modal-mask{padding:0;align-items:stretch;}
  .modal-card{max-width:none;max-height:none;height:100%;border-radius:0;padding:24px 20px;}
}