/* roulang page: index */
*,*::before,*::after{box-sizing:border-box}
:root{
  --bg-900:#050D16;--bg-800:#0A1622;--bg-700:#0F2032;
  --primary:#12C7D4;--primary-600:#0FA8B6;--accent:#FFB43A;
  --success:#3BE08A;--danger:#FF6B6B;
  --text-1:#E9F4F8;--text-2:#9FB4C4;--text-3:#7288A0;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --glass:rgba(18,38,58,.55);--stroke:rgba(255,255,255,.10);
  --r-pill:999px;--r-card:18px;--r-shot:20px;--r-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(18,199,212,.5),0 12px 30px -10px rgba(18,199,212,.55);
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --container:1200px;
}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;font-family:var(--sans);font-size:16px;line-height:1.8;
  color:var(--text-1);background:var(--bg-900);overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:48px;line-height:1.17;font-weight:700;letter-spacing:-.01em}
h2{font-size:32px;line-height:1.25;font-weight:700}
h3{font-size:22px;line-height:1.36;font-weight:600}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(18,199,212,.35)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:88px 0;position:relative}
.section::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(105deg,transparent,rgba(18,199,212,.18),transparent);
}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px}
.section-title{font-size:32px;line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-sub{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px}
.mono{font-family:var(--mono);letter-spacing:.02em}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:15px;border-bottom:1px solid rgba(18,199,212,.4);padding-bottom:2px;transition:border-color .2s,color .2s}
.text-link:hover{border-bottom-color:var(--primary);color:#5fe3ec}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:90;display:flex;justify-content:center;transition:top .25s ease}
.nav{
  width:min(var(--container),100% - 32px);height:64px;display:flex;align-items:center;gap:20px;
  padding:0 14px 0 20px;border-radius:var(--r-pill);
  background:rgba(10,22,34,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--stroke);box-shadow:0 16px 40px -28px rgba(0,0,0,.9);
  transition:height .25s ease,background .25s ease;
}
.site-header.is-scrolled{top:10px}
.site-header.is-scrolled .nav{height:56px;background:rgba(6,15,24,.9)}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;flex:0 0 36px;display:grid;place-items:center}
.brand-text{display:flex;align-items:center;gap:8px}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.02em}
.brand-badge{font-size:12px;line-height:18px;letter-spacing:.04em;padding:0 8px;border-radius:var(--r-pill);border:1px solid rgba(18,199,212,.45);color:#7fe9f1;background:rgba(18,199,212,.1)}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;height:44px;padding:0 14px;border-radius:var(--r-pill);font-size:15px;color:var(--text-2);position:relative;transition:color .2s,background .2s}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text-1);background:rgba(18,199,212,.12)}
.nav-link.is-active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:6px;width:18px;height:2px;border-radius:2px;background:var(--primary)}
.nav-cta{flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--stroke);background:rgba(255,255,255,.04);cursor:pointer;align-items:center;justify-content:center;flex:0 0 44px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;background:transparent;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(180deg,#1AD6E4,var(--primary));color:#04222a;box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(18,199,212,.6),0 16px 34px -10px rgba(18,199,212,.6)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.95)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-strong);color:var(--text-1);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:rgba(18,199,212,.65);color:#8ceef5}
.btn-amber{background:linear-gradient(180deg,#FFC463,var(--accent));color:#3a2604;box-shadow:0 0 0 1px rgba(255,180,58,.45),0 12px 30px -12px rgba(255,180,58,.55)}
.btn-amber:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn .ico{width:20px;height:20px;display:grid;place-items:center;flex:0 0 20px}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;line-height:18px;letter-spacing:.04em;border:1px solid var(--stroke);background:rgba(255,255,255,.06);color:var(--text-2)}
.badge-cyan{border-color:rgba(18,199,212,.45);background:rgba(18,199,212,.12);color:#7fe9f1}
.badge-amber{border-color:rgba(255,180,58,.45);background:rgba(255,180,58,.12);color:#FFD08A}
.badge-green{border-color:rgba(59,224,138,.42);background:rgba(59,224,138,.12);color:#8CF0BE}

/* ============ Hero ============ */
.hero{position:relative;padding:150px 0 80px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(5,13,22,.72),rgba(5,13,22,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.9;
}
.hero::after{
  content:"";position:absolute;z-index:0;width:720px;height:720px;right:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,199,212,.22),transparent 66%);pointer-events:none;
}
.hero-inner{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero-copy .brand-line{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.hero-copy h1{margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--text-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-bar{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.trust-item{
  flex:1 1 0;min-width:150px;display:flex;flex-direction:column;gap:2px;padding:12px 16px;border-radius:14px;
  border:1px solid var(--line);background:rgba(9,20,32,.6);backdrop-filter:blur(10px);
}
.trust-item .k{font-size:12px;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase}
.trust-item .v{font-family:var(--mono);font-size:15px;color:var(--text-1)}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.phone{
  width:100%;max-width:340px;border-radius:28px;padding:14px;position:relative;
  background:linear-gradient(180deg,rgba(24,48,70,.78),rgba(10,22,34,.9));
  border:1px solid var(--stroke);box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
}
.phone-notch{height:22px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.phone-notch i{display:block;width:72px;height:6px;border-radius:var(--r-pill);background:rgba(255,255,255,.16)}
.phone-shot{border-radius:20px;overflow:hidden;border:1px solid var(--line);aspect-ratio:9/15;background:var(--bg-700)}
.phone-shot img{width:100%;height:100%;object-fit:cover}
.float-chip{
  position:absolute;display:flex;align-items:center;gap:8px;padding:9px 14px;border-radius:var(--r-pill);
  background:rgba(10,22,34,.86);border:1px solid var(--stroke);backdrop-filter:blur(12px);
  font-size:12px;color:var(--text-2);box-shadow:0 14px 30px -20px rgba(0,0,0,.9);z-index:2;
}
.float-chip .dot{width:8px;height:8px;border-radius:50%;background:var(--success)}
.float-chip.c1{top:64px;left:-12px}
.float-chip.c2{bottom:78px;right:-14px}
.float-chip strong{color:var(--text-1);font-family:var(--mono);font-weight:600}

/* ============ 价值区块 2×2 错位 ============ */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.value-card{
  display:flex;gap:18px;align-items:flex-start;padding:26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--stroke);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);transition:transform .22s ease,border-color .22s ease;
}
.value-card:nth-child(2),.value-card:nth-child(4){transform:translateY(20px)}
.value-card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4)}
.value-card:nth-child(2):hover,.value-card:nth-child(4):hover{transform:translateY(14px)}
.value-num{font-family:var(--mono);font-size:26px;font-weight:700;color:rgba(18,199,212,.55);line-height:1;min-width:46px}
.value-body h3{margin-bottom:8px}
.value-body p{font-size:15px;color:var(--text-2)}
.value-icon{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(18,199,212,.12);border:1px solid rgba(18,199,212,.32);color:#7fe9f1;margin-bottom:12px}
.value-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;color:var(--primary)}
.value-link:hover{color:#8ceef5;gap:10px}

/* ============ 截图轮播 ============ */
.carousel{position:relative}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:thin;scrollbar-color:rgba(18,199,212,.5) transparent;
}
.shot-track::-webkit-scrollbar{height:6px}
.shot-track::-webkit-scrollbar-thumb{background:rgba(18,199,212,.45);border-radius:6px}
.shot-card{
  flex:0 0 320px;scroll-snap-align:start;border-radius:var(--r-shot);overflow:hidden;
  background:var(--glass);border:1px solid var(--stroke);backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);transition:transform .22s ease,border-color .22s ease;
}
.shot-card:nth-child(3n+2){flex:0 0 280px}
.shot-card:nth-child(3n){flex:0 0 240px}
.shot-card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4)}
.shot-media{aspect-ratio:16/9;background:var(--bg-700);overflow:hidden}
.shot-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.shot-card:hover .shot-media img{transform:scale(1.04)}
.shot-cap{padding:16px 18px 20px}
.shot-cap h3{font-size:17px;margin-bottom:6px}
.shot-cap p{font-size:14px;color:var(--text-2)}
.carousel-nav{display:flex;align-items:center;justify-content:space-between;margin-top:6px}
.dots{display:flex;gap:8px}
.dots i{display:block;width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.2)}
.dots i.on{background:var(--primary);width:22px;border-radius:var(--r-pill)}
.arrow-group{display:flex;gap:10px}
.arrow-btn{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  background:rgba(255,255,255,.04);border:1px solid var(--line-strong);color:var(--text-1);
  transition:border-color .2s,background .2s,transform .2s;
}
.arrow-btn:hover{border-color:rgba(18,199,212,.6);background:rgba(18,199,212,.1);transform:translateY(-1px)}

/* ============ 系统要求行卡 ============ */
.spec-list{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--stroke);background:rgba(10,22,34,.5)}
.spec-row{display:flex;align-items:center;gap:24px;min-height:56px;padding:12px 22px;border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:0}
.spec-row:nth-child(odd){background:rgba(255,255,255,.02)}
.spec-row:hover{background:rgba(18,199,212,.06)}
.spec-key{flex:0 0 190px;font-family:var(--mono);font-size:14px;color:var(--text-3);letter-spacing:.03em}
.spec-val{font-size:15px;color:var(--text-1)}
.spec-val a{color:var(--primary)}
.spec-val a:hover{text-decoration:underline}

/* ============ 评价墙 ============ */
.review-wall{columns:3;column-gap:20px}
.review-card{
  break-inside:avoid;margin-bottom:20px;padding:24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--stroke);backdrop-filter:blur(12px);
  position:relative;transition:transform .22s ease,border-color .22s;
}
.review-card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.35)}
.quote-mark{position:absolute;top:6px;right:16px;font-size:64px;line-height:1;color:rgba(18,199,212,.14);font-family:Georgia,serif}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;color:#04222a;background:linear-gradient(180deg,#7de9f1,var(--primary))}
.avatar.a2{background:linear-gradient(180deg,#FFD79B,var(--accent))}
.avatar.a3{background:linear-gradient(180deg,#9bf2c8,var(--success))}
.review-name{font-size:15px;font-weight:600}
.review-meta{font-size:12px;color:var(--text-3)}
.stars{color:var(--accent);font-size:12px;letter-spacing:.16em;margin-bottom:10px}
.review-card p{font-size:15px;color:var(--text-2)}

/* ============ 最新信息 CMS ============ */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--stroke);backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);transition:transform .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4)}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-700)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.post-title{font-size:18px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s}
.post-card:hover .post-title{color:#8ceef5}
.post-sum{font-size:14px;color:var(--text-2);margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}
.post-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--primary)}
.post-foot .go:hover{gap:10px}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding:56px 24px;border-radius:var(--r-card);background:var(--glass);border:1px dashed var(--line-strong);
}
.empty-state .ico{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:rgba(18,199,212,.12);border:1px solid rgba(18,199,212,.32);color:#7fe9f1}
.empty-state p{color:var(--text-2);font-size:15px}
.skeleton{height:14px;border-radius:8px;background:linear-gradient(90deg,rgba(255,255,255,.06),rgba(255,255,255,.12),rgba(255,255,255,.06));background-size:200% 100%;animation:sk 1.4s linear infinite}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ============ FAQ ============ */
.faq-list{border-radius:var(--r-card);border:1px solid var(--stroke);background:rgba(10,22,34,.5);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;
  min-height:64px;padding:12px 22px;font-size:16px;font-weight:600;list-style:none;
  transition:background .2s,color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(18,199,212,.07);color:#8ceef5}
.faq-icon{width:26px;height:26px;flex:0 0 26px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-strong);color:var(--primary);font-size:16px;line-height:1;transition:transform .24s ease}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 22px 22px;color:var(--text-2);font-size:15px;max-width:860px}

/* ============ CTA ============ */
.cta-block{
  position:relative;border-radius:26px;padding:56px 48px;overflow:hidden;
  background:linear-gradient(140deg,rgba(15,32,50,.94),rgba(6,15,24,.96));
  border:1px solid var(--stroke);box-shadow:var(--shadow-card);
}
.cta-block::before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,199,212,.26),transparent 68%);
}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(105deg,transparent,rgba(18,199,212,.08));pointer-events:none;
}
.cta-inner{position:relative;z-index:1}
.cta-block h2{margin-bottom:14px}
.cta-block p{color:var(--text-2);max-width:660px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3)}

/* ============ 页脚 ============ */
.site-footer{margin-top:40px;background:var(--bg-800);border-top:1px solid var(--line);position:relative}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(18,199,212,.6),transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.footer-brand .logo-row{display:flex;align-items:center;gap:10px}
.footer-brand .name{font-size:16px;font-weight:700}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:320px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-3);margin-bottom:16px;font-weight:600}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0 34px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .review-wall{columns:2}
}
@media (max-width:1023px){
  h1{font-size:38px}
  .hero{padding:132px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:2}
  .value-grid{grid-template-columns:1fr}
  .value-card:nth-child(2),.value-card:nth-child(4){transform:none}
  .value-card:nth-child(2):hover,.value-card:nth-child(4):hover{transform:translateY(-4px)}
  .post-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .spec-key{flex:0 0 150px}
}
@media (max-width:767px){
  body{font-size:15px}
  h1{font-size:28px;line-height:1.3}
  h2,.section-title{font-size:22px}
  h3{font-size:18px}
  .section{padding:56px 0}
  .container{padding:0 18px}
  .nav{height:60px;padding:0 10px 0 14px;gap:10px}
  .nav-toggle{display:flex;margin-left:auto;order:3}
  .nav-cta{display:none}
  .nav-list{
    position:fixed;left:16px;right:16px;top:88px;flex-direction:column;align-items:stretch;gap:0;
    padding:10px;border-radius:22px;background:rgba(8,18,28,.96);border:1px solid var(--stroke);
    backdrop-filter:blur(18px);box-shadow:0 24px 60px -30px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .22s,transform .22s,visibility .22s;
  }
  body.nav-open .nav-list{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{height:44px;justify-content:flex-start;border-radius:12px;border-bottom:1px solid var(--line)}
  .nav-link:last-child{border-bottom:0}
  .nav-link.is-active::after{display:none}
  .hero{padding:112px 0 56px}
  .hero-lead{font-size:15px}
  .trust-item{flex:1 1 100%}
  .float-chip.c1{top:20px;left:0}
  .float-chip.c2{bottom:24px;right:0}
  .shot-card,.shot-card:nth-child(3n+2),.shot-card:nth-child(3n){flex:0 0 78%}
  .review-wall{columns:1}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px;min-height:auto;padding:14px 18px}
  .spec-key{flex:none}
  .cta-block{padding:36px 22px}
  .faq-item summary{padding:14px 18px;font-size:15px}
  .faq-answer{padding:0 18px 20px}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
}
@media (max-width:420px){
  h1{font-size:25px}
  .brand-name{font-size:15px}
  .btn{padding:0 18px;font-size:14px}
  .phone{max-width:300px}
}

/* roulang page: article */
:root{
  --bg-900:#050D16;
  --bg-800:#0A1622;
  --bg-700:#0F2032;
  --primary:#12C7D4;
  --primary-600:#0FA8B6;
  --accent:#FFB43A;
  --success:#3BE08A;
  --danger:#FF6B6B;
  --text-1:#E9F4F8;
  --text-2:#9FB4C4;
  --line:rgba(255,255,255,.08);
  --glass:rgba(18,38,58,.55);
  --glass-strong:rgba(14,30,48,.86);
  --radius-card:18px;
  --radius-shot:20px;
  --radius-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(18,199,212,.5), 0 12px 30px -10px rgba(18,199,212,.55);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono","Roboto Mono",Consolas,Menlo,monospace;
  --header-h:64px;
  --gap-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--bg-900);
  background-image:
    radial-gradient(680px 320px at 12% -6%, rgba(18,199,212,.13), transparent 66%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto, 56px 56px, 56px 56px;
  overflow-x:hidden;
}
body.page-article{background-color:#040A11}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text-1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(18,199,212,.35);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--gap-section) 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:32px;line-height:1.25}
.section-head .sub{color:var(--text-2);font-size:14px;margin-top:8px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);font-family:var(--font-mono)}
.hairline{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(18,199,212,.35),transparent)}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  display:flex;justify-content:center;pointer-events:none;
}
.nav{
  pointer-events:auto;
  width:min(1200px,calc(100% - 32px));
  height:var(--header-h);
  display:flex;align-items:center;gap:18px;
  padding:0 14px 0 18px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px -28px rgba(0,0,0,.9);
  transition:height .28s ease, background .28s ease, box-shadow .28s ease;
}
.site-header.is-scrolled .nav{height:56px;background:var(--glass-strong);box-shadow:0 20px 46px -26px rgba(0,0,0,.95)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:rgba(18,199,212,.10);border:1px solid rgba(18,199,212,.28)}
.brand-text{display:flex;align-items:center;gap:8px}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-badge{font-size:11px;letter-spacing:.08em;padding:2px 8px;border-radius:999px;color:var(--primary);background:rgba(18,199,212,.12);border:1px solid rgba(18,199,212,.35)}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--text-2);transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--text-1);background:rgba(18,199,212,.14);box-shadow:inset 0 -2px 0 var(--primary)}
.nav-cta{margin-left:6px;white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;margin-left:auto;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  min-height:44px;padding:0 20px;border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,opacity .2s ease;
}
.btn-primary{
  color:#04212B;
  background:linear-gradient(180deg,#2AD8E4,#0FA8B6);
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(18,199,212,.6),0 16px 34px -10px rgba(18,199,212,.6);color:#04212B}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94)}
.btn-ghost{
  color:var(--text-1);
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:rgba(18,199,212,.6);color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--primary);border-bottom:1px solid rgba(18,199,212,.45);padding-bottom:2px}
.link-more:hover{border-bottom-style:solid;color:#5FE2EC}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;line-height:18px;
  color:var(--text-2);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
}
.badge-cyan{color:var(--primary);background:rgba(18,199,212,.12);border-color:rgba(18,199,212,.32)}
.badge-green{color:var(--success);background:rgba(59,224,138,.10);border-color:rgba(59,224,138,.30)}
.badge-amber{color:var(--accent);background:rgba(255,180,58,.10);border-color:rgba(255,180,58,.32)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ============ 面包屑条 ============ */
.crumb-bar{
  margin-top:calc(var(--header-h) + 44px);
  padding:0;
}
.crumb-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:48px;padding:8px 18px;border-radius:999px;
  background:rgba(18,38,58,.5);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  font-size:14px;color:var(--text-2);
}
.crumb-path{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.crumb-path .sep{color:rgba(255,255,255,.24)}
.crumb-path .current{color:var(--text-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:44vw}
.crumb-cat{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-hero{padding:40px 0 8px}
.article-hero .kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
.article-hero h1{
  font-size:44px;line-height:56px;letter-spacing:-.01em;max-width:900px;margin:0 auto;
}
.article-hero-inner{max-width:900px;margin:0 auto;text-align:left}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;color:var(--text-2);font-size:14px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.24)}
.meta-mono{font-family:var(--font-mono);font-size:13px;color:var(--text-2)}
.hero-figure{margin-top:32px;border-radius:var(--radius-shot);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);aspect-ratio:16/7;background:var(--bg-700)}
.hero-figure img{width:100%;height:100%;object-fit:cover;opacity:.9}

/* ============ 文章布局 ============ */
.article-wrap{padding:40px 0 0}
.article-layout{
  display:grid;grid-template-columns:210px minmax(0,760px);
  gap:48px;justify-content:center;align-items:start;
}
.toc{position:sticky;top:104px}
.toc-title{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--text-2);text-transform:uppercase;margin-bottom:14px}
.toc-list{border-left:1px solid var(--line);display:flex;flex-direction:column}
.toc-link{
  display:block;padding:8px 0 8px 14px;font-size:13.5px;line-height:1.5;
  color:var(--text-2);border-left:2px solid transparent;margin-left:-1px;
  transition:color .2s ease,border-color .2s ease,padding-left .2s ease;
}
.toc-link:hover{color:var(--text-1)}
.toc-link.is-current{color:var(--primary);border-left-color:var(--primary);padding-left:16px}
.toc-chip-row{display:none}

/* ============ 正文排版 ============ */
.panel{
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.article-body{
  padding:40px 44px 48px;
  font-size:16.5px;line-height:1.9;color:#D9E7EF;
  overflow-wrap:break-word;
}
.article-body > * + *{margin-top:20px}
.article-body p{margin:0 0 20px;color:#CFDEE8}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:24px;line-height:1.4;color:var(--text-1);
}
.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--primary)}
.article-body h3{margin:30px 0 12px;font-size:19px;color:var(--text-1)}
.article-body ul{margin:0 0 20px;padding:0}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:10px;color:#CFDEE8}
.article-body ul li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:1px;background:var(--primary)}
.article-body ol{margin:0 0 20px;padding-left:22px;list-style:decimal}
.article-body ol li{margin-bottom:10px;color:#CFDEE8}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--accent);
  background:rgba(255,180,58,.06);border-radius:0 14px 14px 0;color:#E4DCC8;
}
.article-body blockquote p{margin:0;color:inherit}
.article-body strong{color:#fff}
.article-body img{border-radius:14px;margin:24px auto}
.article-body figcaption,.article-body .caption{text-align:center;font-size:13px;color:#8496A4;margin-top:-8px;margin-bottom:22px}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(18,199,212,.4)}
.article-body a:hover{color:#6FE8F0}
.article-body table{width:100%;border-collapse:collapse;min-width:520px}
.article-body .table-scroll,.article-body .table-wrap{overflow-x:auto;border-radius:14px;border:1px solid var(--line)}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;font-size:15px}
.article-body th{background:rgba(18,199,212,.08);color:var(--text-1);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body code{font-family:var(--font-mono);font-size:14px;background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}

.empty-state{padding:56px 32px;text-align:center}
.empty-state .icon{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;display:grid;place-items:center;background:rgba(18,199,212,.10);border:1px solid rgba(18,199,212,.3);color:var(--primary)}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:22px}

/* ============ 文章尾部 ============ */
.article-foot{margin-top:28px;display:flex;flex-direction:column;gap:20px}
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.prevnext a{
  display:block;padding:16px 18px;border-radius:16px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.prevnext a:hover{transform:translateY(-3px);border-color:rgba(18,199,212,.45);background:rgba(18,199,212,.06)}
.prevnext .label{display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--text-2);margin-bottom:6px}
.prevnext .txt{font-size:15px;color:var(--text-1);line-height:1.6}
.back-entry{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 20px;border-radius:16px;border:1px dashed rgba(255,255,255,.16);font-size:14px;color:var(--text-2);flex-wrap:wrap}

/* ============ 相关推荐 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.42);box-shadow:0 24px 46px -26px rgba(0,0,0,.95)}
.card-media{aspect-ratio:16/9;background:var(--bg-700);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:17.5px;line-height:1.5}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2)}

/* ============ CTA ============ */
.cta-block{
  position:relative;overflow:hidden;
  border-radius:24px;
  padding:52px 44px;
  background:
    radial-gradient(520px 240px at 88% 10%, rgba(18,199,212,.20), transparent 62%),
    linear-gradient(180deg,rgba(10,22,34,.95),rgba(5,13,22,.98));
  border:1px solid rgba(18,199,212,.24);
  box-shadow:var(--shadow-card);
}
.cta-block h2{font-size:30px;line-height:1.3;max-width:640px}
.cta-block p{margin-top:14px;color:var(--text-2);max-width:620px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn-glow{position:relative}
.btn-glow::before{content:"";position:absolute;inset:-1px;border-radius:999px;background:radial-gradient(120px 60px at 50% 120%,rgba(18,199,212,.5),transparent 70%);pointer-events:none;opacity:.9}
.cta-points{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.cta-point{padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.cta-point strong{display:block;font-size:14px;color:var(--text-1);margin-bottom:6px}
.cta-point span{font-size:13px;color:var(--text-2);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--gap-section);
  background:linear-gradient(180deg,rgba(5,13,22,.4),#03080E);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(18,199,212,.45),transparent) 1;
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .name{font-size:16px;font-weight:700}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col li{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7C8E9C;
}

/* ============ 骨架 / 错误态 ============ */
.skeleton{background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(255,255,255,.12),rgba(255,255,255,.05));background-size:200% 100%;animation:sk 1.4s ease-in-out infinite;border-radius:8px}
@keyframes sk{0%{background-position:200% 0}100%{background-position:-200% 0}}
.alert-error{margin-top:20px;padding:14px 18px;border-radius:12px;border:1px solid rgba(255,107,107,.4);background:rgba(255,107,107,.08);color:#FFD3D3;font-size:14px}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:180px minmax(0,720px);gap:36px}
  .article-hero h1{font-size:38px;line-height:48px}
}
@media (max-width:1023px){
  .nav-list{position:absolute;top:calc(var(--header-h) + 10px);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:8px;border-radius:20px;background:var(--glass-strong);border:1px solid var(--line);backdrop-filter:blur(18px);display:none}
  .nav-list.is-open{display:flex}
  .nav-link{height:44px;border-radius:12px;padding:0 14px}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .toc{position:static}
  .toc-list{display:none}
  .toc-chip-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;margin-top:12px;-webkit-overflow-scrolling:touch}
  .toc-chip{flex:0 0 auto;display:inline-flex;align-items:center;min-height:38px;padding:0 14px;border-radius:999px;font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line)}
  .toc-chip:hover{color:var(--primary);border-color:rgba(18,199,212,.5)}
  .rel-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-points{grid-template-columns:1fr}
}
@media (max-width:767px){
  :root{--gap-section:56px}
  .container{padding:0 18px}
  .brand-name{font-size:16px}
  .crumb-bar{margin-top:calc(var(--header-h) + 34px)}
  .crumb-inner{border-radius:18px;flex-direction:column;align-items:flex-start;gap:6px;padding:12px 16px}
  .crumb-path .current{max-width:70vw}
  .article-hero h1{font-size:28px;line-height:1.42}
  .article-body{padding:26px 20px 30px;font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px;margin-top:32px}
  .article-body table{min-width:460px}
  .rel-grid{grid-template-columns:1fr}
  .prevnext{grid-template-columns:1fr}
  .cta-block{padding:34px 22px;border-radius:20px}
  .cta-block h2{font-size:22px}
  .cta-actions .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:419px){
  .article-hero h1{font-size:25px}
  .article-body h2{font-size:19px}
  .section-head h2{font-size:22px}
}

/* roulang page: category1 */
:root{
  --bg-900:#050D16;--bg-800:#0A1622;--bg-700:#0F2032;
  --primary:#12C7D4;--primary-600:#0FA8B6;--accent:#FFB43A;
  --success:#3BE08A;--danger:#FF6B6B;
  --text-1:#E9F4F8;--text-2:#9FB4C4;--text-3:#6E8698;
  --line:rgba(255,255,255,.08);
  --glass:rgba(18,38,58,.55);
  --glass-strong:rgba(14,32,50,.82);
  --radius-pill:999px;--radius-card:18px;--radius-shot:20px;--radius-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 12px 30px -10px rgba(18,199,212,.55);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"SFMono-Regular","JetBrains Mono",Consolas,Menlo,monospace;
  --gap-section:88px;
  --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-top:100px;
  font-family:var(--font);font-size:16px;line-height:1.8;
  color:var(--text-1);
  background:
    radial-gradient(900px 520px at 12% -6%,rgba(18,199,212,.13),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(255,180,58,.07),transparent 60%),
    linear-gradient(180deg,var(--bg-900),var(--bg-800) 42%,var(--bg-900));
  background-attachment:fixed;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(1100px 640px at 50% 0%,#000 20%,transparent 82%);
  -webkit-mask-image:radial-gradient(1100px 640px at 50% 0%,#000 20%,transparent 82%);
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#5FE3EC}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1280px){.container{padding:0 32px}}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  display:flex;justify-content:center;padding:0 16px;
  transition:top .25s var(--ease);
}
.nav{
  width:min(1200px,100%);height:64px;
  display:flex;align-items:center;gap:20px;
  padding:0 14px 0 18px;
  border-radius:var(--radius-pill);
  background:var(--glass);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px -26px rgba(0,0,0,.9);
  transition:height .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-shrink .nav{height:56px;background:var(--glass-strong);box-shadow:0 20px 44px -24px rgba(0,0,0,.95)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;flex:0 0 auto}
.brand-text{display:flex;align-items:center;gap:8px}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em}
.brand-badge{
  font-size:11px;line-height:18px;padding:0 8px;border-radius:var(--radius-pill);
  border:1px solid rgba(18,199,212,.45);background:rgba(18,199,212,.12);
  color:#7FEDF6;letter-spacing:.04em;
}
.nav-list{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;font-size:15px;
  color:var(--text-2);border-radius:var(--radius-pill);position:relative;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text-1);background:rgba(18,199,212,.13)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.04);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--text-1);
  transform:translateX(-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{content:"";top:-6px}
.nav-toggle span::after{content:"";top:6px}
.nav-toggle[aria-expanded="true"] span{transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(-90deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{opacity:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s 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:#02222A;background:linear-gradient(180deg,#3DDCE6,var(--primary));
  box-shadow:0 0 0 1px rgba(18,199,212,.5),var(--shadow-glow),inset 0 1px 0 rgba(255,255,255,.45);
}
.btn-primary:hover{background:linear-gradient(180deg,#54E4EE,#17D3E1);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(18,199,212,.6),0 16px 34px -10px rgba(18,199,212,.7),inset 0 1px 0 rgba(255,255,255,.5)}
.btn-primary:active{transform:translateY(1px);background:linear-gradient(180deg,#16B6C2,#0FA8B6)}
.btn-ghost{
  color:var(--text-1);background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.18);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(18,199,212,.6);color:#9DF3F9;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;border-bottom:1px solid rgba(18,199,212,.5)}
.link-arrow:hover{border-bottom-color:var(--primary)}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.05);
}
.badge-cyan{color:#8DEFF7;border-color:rgba(18,199,212,.42);background:rgba(18,199,212,.13)}
.badge-green{color:#8BF0BC;border-color:rgba(59,224,138,.4);background:rgba(59,224,138,.12)}
.badge-amber{color:#FFD79A;border-color:rgba(255,180,58,.42);background:rgba(255,180,58,.12)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:26px 0 0;overflow:hidden}
.hero-bg{
  position:absolute;inset:-40px 0 auto;height:560px;z-index:0;opacity:.34;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center}
.hero-copy{grid-column:span 7}
.hero-visual{grid-column:span 5}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px}
.hero h1{
  font-size:48px;line-height:1.18;font-weight:700;letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:34px;
  padding:16px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.trust-item{display:flex;flex-direction:column;gap:4px}
.trust-item .k{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.trust-item .v{font-family:var(--mono);font-size:15px;color:var(--text-1)}
.trust-item .v.ok{color:var(--success)}

.device{
  position:relative;border-radius:28px;padding:14px;
  background:var(--glass);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.16);
}
.device-notch{height:5px;width:64px;margin:0 auto 12px;border-radius:99px;background:rgba(255,255,255,.16)}
.device-shot{border-radius:var(--radius-shot);overflow:hidden;background:var(--bg-700);aspect-ratio:9/13}
.device-shot img{width:100%;height:100%;object-fit:cover}
.float-chip{
  position:absolute;display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-pill);
  background:var(--glass-strong);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(12px);
  font-size:12px;color:var(--text-1);box-shadow:var(--shadow-card);
}
.float-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(59,224,138,.16)}
.float-chip.c1{top:9%;left:-22px}
.float-chip.c2{bottom:12%;right:-18px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--gap-section) 0 0}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}
.highlight-band{
  height:1px;margin:0;border:0;
  background:linear-gradient(105deg,transparent,rgba(18,199,212,.45),transparent);
}

/* ---------- 锚点 + 长文 ---------- */
.topic-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;align-items:start}
.anchor-rail{position:sticky;top:104px;align-self:start}
.anchor-rail .rail-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-bottom:12px}
.anchor-list{display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line);padding-left:0}
.anchor-list a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;margin-left:-1px;
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.anchor-list a:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.anchor-list a.is-current{color:#8DEFF7;border-left-color:var(--primary);background:linear-gradient(90deg,rgba(18,199,212,.14),transparent)}
.rail-note{
  margin-top:20px;padding:16px;border-radius:var(--radius-card);
  border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:13px;color:var(--text-2);line-height:1.7;
}
.prose{max-width:820px}
.prose h2{
  font-size:26px;line-height:1.4;font-weight:700;margin-top:44px;padding-left:14px;
  border-left:3px solid var(--primary);
}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;font-weight:700;margin-top:26px;color:var(--text-1)}
.prose p{margin-top:18px;color:var(--text-2);line-height:1.9}
.prose strong{color:var(--text-1);font-weight:600}
.prose ul{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.prose ul li{position:relative;padding-left:18px;color:var(--text-2);line-height:1.85}
.prose ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--primary);border-radius:1px}
.quote{
  margin-top:24px;padding:18px 20px;border-radius:var(--radius-card);
  border:1px solid var(--line);border-left:3px solid var(--accent);
  background:rgba(255,255,255,.035);color:var(--text-2);line-height:1.85;font-size:15px;
}
.figure{margin-top:28px;border-radius:var(--radius-shot);overflow:hidden;border:1px solid var(--line);background:var(--bg-700);aspect-ratio:16/9}
.figure img{width:100%;height:100%;object-fit:cover}
.figcap{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3)}
.data-table-wrap{margin-top:24px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(255,255,255,.02)}
table.data{width:100%;border-collapse:collapse;min-width:520px;font-size:14px}
table.data th,table.data td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-2)}
table.data th{color:var(--text-1);font-weight:600;background:rgba(255,255,255,.03);white-space:nowrap}
table.data td.mono{font-family:var(--mono);color:var(--text-1)}
table.data tr:last-child td{border-bottom:0}

/* ---------- 能力卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{
  position:relative;padding:22px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.10);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4);box-shadow:0 24px 46px -24px rgba(0,0,0,.85)}
.card .icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,199,212,.14);border:1px solid rgba(18,199,212,.34);color:#8DEFF7;
  font-family:var(--mono);font-size:15px;
}
.card h3{font-size:18px;margin-top:16px;font-weight:700}
.card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2)}
.card .card-foot{margin-top:16px}

/* ---------- 场景列表 ---------- */
.scene-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.scene{
  display:flex;flex-direction:column;gap:14px;padding:0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.scene:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4)}
.scene-img{aspect-ratio:16/10;overflow:hidden;background:var(--bg-700)}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.scene:hover .scene-img img{transform:scale(1.04)}
.scene-body{padding:0 20px 22px}
.scene-body h3{font-size:17px;font-weight:700}
.scene-body p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.step{
  position:relative;padding:22px 20px 20px;border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.02));
  border:1px solid var(--line);
}
.step .num{
  font-family:var(--mono);font-size:13px;color:#02222A;background:var(--primary);
  width:30px;height:30px;border-radius:var(--radius-pill);display:flex;align-items:center;justify-content:center;font-weight:700;
}
.step h3{margin-top:16px;font-size:17px}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ---------- 统计条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:36px;
  padding:22px;border-radius:var(--radius-card);border:1px solid var(--line);
  background:linear-gradient(105deg,rgba(18,199,212,.10),rgba(255,255,255,.02));
}
.stat-strip .stat{display:flex;flex-direction:column;gap:6px}
.stat .num{font-family:var(--mono);font-size:24px;color:var(--text-1);font-weight:600}
.stat .label{font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(255,255,255,.03);
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item[open]{border-color:rgba(18,199,212,.36);background:rgba(18,199,212,.07)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  min-height:64px;padding:0 20px;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  margin-left:auto;width:22px;height:22px;flex:0 0 auto;position:relative;
  transition:transform .24s var(--ease);
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-item summary .plus::before{left:50%;top:0;width:2px;height:22px;transform:translateX(-50%)}
.faq-item summary .plus::after{top:50%;left:0;height:2px;width:22px;transform:translateY(-50%)}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-body{padding:0 20px 20px;color:var(--text-2);font-size:15px;line-height:1.85;border-top:1px solid var(--line);padding-top:16px}

/* ---------- CTA ---------- */
.cta-block{
  margin-top:var(--gap-section);padding:44px;border-radius:24px;position:relative;overflow:hidden;
  border:1px solid rgba(18,199,212,.28);
  background:
    radial-gradient(620px 320px at 12% 10%,rgba(18,199,212,.20),transparent 66%),
    radial-gradient(520px 300px at 92% 92%,rgba(255,180,58,.12),transparent 68%),
    linear-gradient(180deg,rgba(15,32,50,.92),rgba(6,16,26,.96));
  box-shadow:var(--shadow-card);
}
.cta-block h2{font-size:30px;line-height:1.35;font-weight:700;max-width:640px}
.cta-block p{margin-top:14px;color:var(--text-2);max-width:660px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--gap-section);padding:56px 0 28px;position:relative;
  background:linear-gradient(180deg,rgba(4,10,18,.4),rgba(3,8,14,.96));
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,199,212,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .logo-row{display:flex;align-items:center;gap:10px}
.footer-brand .name{font-size:16px;font-weight:700}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:340px}
.footer-brand .tag-row{margin-top:16px}
.footer-col h4{font-size:14px;letter-spacing:.04em;color:var(--text-1);margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-2)}
.footer-col a{color:var(--text-2);min-height:22px;display:inline-flex;align-items:center}
.footer-col a:hover{color:#8DEFF7}
.footer-bottom{
  margin-top:38px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .nav-toggle{display:block}
  .nav-list{
    position:absolute;top:calc(100% + 10px);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    padding:8px;border-radius:22px;background:var(--glass-strong);border:1px solid rgba(255,255,255,.12);
    backdrop-filter:blur(18px);box-shadow:var(--shadow-card);
    display:none;
  }
  .nav{position:relative}
  .nav-list.is-open{display:flex}
  .nav-link{height:44px;border-radius:12px;border-bottom:1px solid var(--line)}
  .nav-link.is-active::after{display:none}
  .nav-cta{display:none}
  .hero-copy,.hero-visual{grid-column:span 12}
  .hero-visual{order:-1;max-width:420px}
  .hero h1{font-size:34px}
  .topic-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .anchor-rail{position:sticky;top:88px;z-index:20;background:rgba(5,13,22,.92);backdrop-filter:blur(14px);padding:10px 0;border-radius:14px}
  .anchor-rail .rail-title,.rail-note{display:none}
  .anchor-list{flex-direction:row;gap:8px;overflow-x:auto;border-left:0;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .anchor-list a{
    border-left:0;border:1px solid var(--line);border-radius:var(--radius-pill);
    height:38px;min-height:38px;padding:0 14px;white-space:nowrap;background:rgba(255,255,255,.04);
  }
  .anchor-list a.is-current{border-color:rgba(18,199,212,.6);color:#8DEFF7;background:rgba(18,199,212,.14)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{padding-top:88px}
  :root{--gap-section:56px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-trust{grid-template-columns:1fr;gap:10px}
  .section-head h2{font-size:23px}
  .card-grid,.steps,.scene-list{grid-template-columns:minmax(0,1fr)}
  .stat-strip{grid-template-columns:1fr 1fr}
  .cta-block{padding:26px 20px}
  .cta-block h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .float-chip.c1{left:-8px}
  .float-chip.c2{right:-6px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .prose h2{font-size:21px;margin-top:34px}
  .prose p{font-size:15px}
}
@media (max-width:420px){
  .container{padding:0 18px}
  .hero h1{font-size:25px}
  .brand-name{font-size:15px}
  .stat-strip{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --bg-900:#050D16;
  --bg-800:#0A1622;
  --bg-700:#0F2032;
  --primary:#12C7D4;
  --primary-600:#0FA8B6;
  --accent:#FFB43A;
  --success:#3BE08A;
  --danger:#FF6B6B;
  --text-1:#E9F4F8;
  --text-2:#9FB4C4;
  --text-3:#6E8496;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(18,38,58,.55);
  --glass-2:rgba(12,26,42,.62);
  --radius-card:18px;
  --radius-shot:20px;
  --radius-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(18,199,212,.5),0 12px 30px -10px rgba(18,199,212,.55);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Roboto Mono","Courier New",monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--bg-900);
  background-image:
    radial-gradient(900px 500px at 12% -6%, rgba(18,199,212,.12), transparent 62%),
    radial-gradient(700px 420px at 92% 4%, rgba(255,180,58,.07), transparent 60%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,.028) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.028) 0 1px, transparent 1px 48px);
  opacity:.5;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
a:hover{color:#4CE0EA;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
p{margin:0 0 16px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(18,199,212,.35);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (min-width:1280px){ .container{padding:0 32px;} }

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:min(var(--container), calc(100% - 32px));
  z-index:60;
  transition:top .25s ease;
}
.nav{
  display:flex;
  align-items:center;
  gap:18px;
  height:64px;
  padding:0 14px 0 18px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px -26px rgba(0,0,0,.9);
  transition:height .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled .nav{
  height:56px;
  background:rgba(10,22,34,.86);
  border-color:rgba(18,199,212,.24);
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;}
.brand-text{display:flex;align-items:center;gap:6px;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;}
.brand-badge{
  font-size:11px;
  letter-spacing:.06em;
  padding:2px 7px;
  border-radius:999px;
  color:#052A30;
  background:linear-gradient(180deg,#3FE0EA,var(--primary));
  font-weight:700;
}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 14px;
  border-radius:999px;
  color:var(--text-2);
  font-size:15px;
  position:relative;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--text-1);background:rgba(18,199,212,.14);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:5px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.nav-cta{margin-left:6px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  margin-left:auto;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text-1);
  transform:translateX(-50%);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,border-color .2s ease,color .2s ease,opacity .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#03262B;
  background:linear-gradient(180deg,#3FDFE9,var(--primary));
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  color:#03262B;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(18,199,212,.65),0 14px 34px -8px rgba(18,199,212,.6);
  filter:brightness(1.08);
}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94);}
.btn-ghost{
  color:var(--text-1);
  background:var(--glass);
  border-color:rgba(255,255,255,.18);
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{color:var(--text-1);border-color:rgba(18,199,212,.65);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{
  color:#2A1A02;
  background:linear-gradient(180deg,#FFCB6B,var(--accent));
  box-shadow:0 0 0 1px rgba(255,180,58,.45),0 12px 30px -12px rgba(255,180,58,.55);
}
.btn-accent:hover{color:#2A1A02;filter:brightness(1.06);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--primary);
  border-bottom:1px solid rgba(18,199,212,.4);
  padding-bottom:2px;
}
.link-more:hover{border-bottom-color:var(--primary);color:#4CE0EA;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  line-height:18px;
  letter-spacing:.04em;
  color:var(--text-2);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-strong);
  white-space:nowrap;
}
.badge-cyan{color:#8FF2FA;border-color:rgba(18,199,212,.4);background:rgba(18,199,212,.12);}
.badge-green{color:#9BF5C6;border-color:rgba(59,224,138,.4);background:rgba(59,224,138,.12);}
.badge-amber{color:#FFD79A;border-color:rgba(255,180,58,.4);background:rgba(255,180,58,.12);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- breadcrumb ---------- */
.crumb-bar{
  margin:104px 0 0;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0 18px;
  border-radius:14px;
  background:var(--glass-2);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  font-size:13px;
  color:var(--text-2);
}
.crumb-bar ol{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.crumb-bar li::after{content:"/";margin-left:8px;color:var(--text-3);}
.crumb-bar li:last-child::after{content:"";}
.crumb-bar a{color:var(--text-2);}
.crumb-bar a:hover{color:var(--primary);}
.crumb-bar strong{color:var(--text-1);font-weight:600;}

/* ---------- section base ---------- */
.section{padding:88px 0 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.section-head h2{font-size:32px;line-height:1.35;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0;}
.divider-band{
  height:1px;
  margin-top:88px;
  background:linear-gradient(105deg,transparent,rgba(18,199,212,.28) 45%,transparent);
  border:0;
}

/* ---------- hero ---------- */
.hero{padding-top:44px;}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.hero h1{
  font-size:48px;
  line-height:1.2;
  margin:18px 0 18px;
  letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{
  font-size:18px;
  color:var(--text-1);
  opacity:.92;
  margin-bottom:12px;
}
.hero-text{color:var(--text-2);font-size:15.5px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 22px;}
.trust-row{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
  max-width:520px;
}
.trust-item{
  padding:10px 12px;
  border-radius:14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}
.trust-item .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--text-3);display:block;}
.trust-item .v{font-family:var(--font-mono);font-size:14px;color:var(--text-1);}

.phone-stage{position:relative;display:flex;justify-content:center;}
.phone{
  position:relative;
  width:min(320px,100%);
  padding:14px;
  border-radius:28px;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(18px);
  box-shadow:0 34px 70px -34px rgba(0,0,0,.95);
}
.phone::before{
  content:"";
  position:absolute;
  top:6px;left:50%;
  transform:translateX(-50%);
  width:64px;height:6px;
  border-radius:999px;
  background:rgba(255,255,255,.18);
}
.phone-screen{
  margin-top:12px;
  border-radius:var(--radius-shot);
  overflow:hidden;
  aspect-ratio:9/16;
  background:linear-gradient(160deg,var(--bg-700),var(--bg-900));
}
.phone-screen img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;
  padding:10px 14px;
  border-radius:14px;
  background:rgba(12,26,42,.86);
  border:1px solid rgba(18,199,212,.32);
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card);
  font-size:12px;
  color:var(--text-2);
  line-height:1.5;
}
.float-card b{display:block;font-family:var(--font-mono);font-size:15px;color:var(--text-1);}
.float-card-1{left:-6px;top:22%;}
.float-card-2{right:-6px;bottom:20%;}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";
  position:absolute;
  top:0;bottom:0;left:50%;
  width:2px;
  transform:translateX(-1px);
  background:linear-gradient(180deg,rgba(18,199,212,0),rgba(18,199,212,.55) 12%,rgba(18,199,212,.45) 88%,rgba(18,199,212,0));
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:1fr 72px 1fr;
  align-items:center;
  gap:0;
  padding:26px 0;
}
.tl-node{
  grid-column:2;
  grid-row:1;
  justify-self:center;
  width:52px;height:52px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);
  font-size:15px;
  color:#03262B;
  background:linear-gradient(180deg,#3FDFE9,var(--primary));
  box-shadow:0 0 0 6px rgba(18,199,212,.12),0 12px 26px -12px rgba(18,199,212,.8);
}
.tl-media{grid-row:1;}
.tl-body{grid-row:1;}
.tl-item:nth-child(odd) .tl-media{grid-column:1;padding-right:36px;}
.tl-item:nth-child(odd) .tl-body{grid-column:3;padding-left:36px;}
.tl-item:nth-child(even) .tl-media{grid-column:3;padding-left:36px;}
.tl-item:nth-child(even) .tl-body{grid-column:1;padding-right:36px;text-align:right;}
.tl-shot{
  border-radius:var(--radius-shot);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-800);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/10;
}
.tl-shot img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.tl-shot:hover img{transform:scale(1.03);}
.tl-body h3{font-size:22px;line-height:1.35;margin-bottom:10px;}
.tl-body p{color:var(--text-2);font-size:15px;margin-bottom:12px;}
.tl-note{
  display:inline-flex;
  align-items:flex-start;
  gap:8px;
  padding:10px 14px;
  border-radius:12px;
  background:rgba(18,199,212,.08);
  border:1px solid rgba(18,199,212,.2);
  font-size:13.5px;
  color:#BEEFF4;
  text-align:left;
  line-height:1.7;
}
.tl-item:nth-child(even) .tl-note{text-align:left;}

/* ---------- spec rows ---------- */
.spec-card{
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.spec-row{
  display:grid;
  grid-template-columns:220px 1fr;
  gap:20px;
  align-items:center;
  min-height:56px;
  padding:12px 24px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.spec-row:last-child{border-bottom:0;}
.spec-row:nth-child(odd){background:rgba(255,255,255,.02);}
.spec-row:hover{background:rgba(18,199,212,.07);}
.spec-row dt{font-family:var(--font-mono);font-size:13.5px;letter-spacing:.04em;color:var(--primary);}
.spec-row dd{margin:0;font-size:15px;color:var(--text-2);}

/* ---------- cards grid ---------- */
.grid{display:grid;gap:20px;}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.card{
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  padding:24px;
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4);}
.card-icon{
  width:40px;height:40px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(18,199,212,.12);
  border:1px solid rgba(18,199,212,.28);
  color:var(--primary);
  font-family:var(--font-mono);
  font-size:15px;
  margin-bottom:16px;
}
.card h3{font-size:18px;line-height:1.5;margin-bottom:8px;}
.card p{color:var(--text-2);font-size:14.5px;margin:0 0 12px;}
.card .meta{font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.04em;}

.check-list li{
  position:relative;
  padding-left:20px;
  color:var(--text-2);
  font-size:14.5px;
  margin-bottom:10px;
  line-height:1.75;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--primary);
}

/* ---------- env panel ---------- */
.env-panel{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:28px;
  align-items:start;
}
.env-figure{
  border-radius:var(--radius-shot);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:4/3;
  background:var(--bg-800);
  position:relative;
}
.env-figure img{width:100%;height:100%;object-fit:cover;}
.env-figure .cap{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 18px;
  font-size:13px;
  color:var(--text-2);
  background:linear-gradient(180deg,transparent,rgba(5,13,22,.92));
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:18px;max-width:900px;}
.faq-item{
  border-radius:14px;
  background:var(--glass);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item[open]{border-color:rgba(18,199,212,.36);background:rgba(18,38,58,.7);}
.faq-item summary{
  list-style:none;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 22px;
  font-size:16.5px;
  font-weight:600;
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:18px;
  line-height:1;
  transition:transform .24s ease,background .24s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);background:rgba(18,199,212,.14);}
.faq-item .faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;border-top:1px solid var(--line);padding-top:16px;}

/* ---------- CTA ---------- */
.cta-block{
  margin-top:88px;
  border-radius:24px;
  padding:52px 44px;
  background:
    radial-gradient(600px 300px at 88% 0%, rgba(18,199,212,.22), transparent 62%),
    linear-gradient(150deg,var(--bg-700),rgba(5,13,22,.95));
  border:1px solid rgba(18,199,212,.24);
  box-shadow:0 40px 80px -50px rgba(0,0,0,1);
  position:relative;
  overflow:hidden;
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-80px;bottom:-120px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,180,58,.18),transparent 66%);
  pointer-events:none;
}
.cta-block h2{font-size:30px;line-height:1.35;margin-bottom:14px;max-width:640px;}
.cta-block p{color:var(--text-2);max-width:600px;font-size:15.5px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.btn-ico{font-family:var(--font-mono);font-size:13px;opacity:.85;}
.cta-note{margin-top:18px;font-size:13px;color:var(--text-3);}

/* ---------- empty state ---------- */
.empty-card{
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px dashed rgba(18,199,212,.35);
  padding:40px 24px;
  text-align:center;
  color:var(--text-2);
}
.empty-card .ico{
  width:46px;height:46px;
  margin:0 auto 14px;
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-family:var(--font-mono);
}
.empty-card p{margin-bottom:16px;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  background:rgba(4,10,18,.92);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,transparent,rgba(18,199,212,.5),transparent) 1;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding:64px 0 40px;
}
.footer-brand .logo-row{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .name{font-size:16.5px;font-weight:700;}
.footer-brand p{color:var(--text-2);font-size:14px;max-width:340px;}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-1);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col li{color:var(--text-2);font-size:14px;line-height:1.8;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 34px;
  border-top:1px solid var(--line);
  color:var(--text-3);
  font-size:13px;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero h1{font-size:42px;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .nav-list{
    position:absolute;
    top:74px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px;
    border-radius:20px;
    background:rgba(8,18,30,.96);
    border:1px solid var(--line-strong);
    backdrop-filter:blur(18px);
    box-shadow:0 24px 50px -28px rgba(0,0,0,1);
    display:none;
  }
  .nav-list.is-open{display:flex;}
  .nav-link{justify-content:flex-start;padding:0 16px;border-radius:12px;border-bottom:1px solid var(--line);}
  .nav-link:last-child{border-bottom:0;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:rgba(18,199,212,.16);}
  .nav-cta{display:none;}
  .nav-toggle{display:block;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:34px;}
  .hero-text{max-width:none;}
  .env-panel{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:860px){
  .timeline::before{left:15px;transform:none;}
  .tl-item{grid-template-columns:1fr;gap:16px;padding:22px 0 22px 48px;}
  .tl-item .tl-media,
  .tl-item .tl-body{grid-column:1 !important;padding-left:0 !important;padding-right:0 !important;text-align:left !important;}
  .tl-item .tl-media{grid-row:1;}
  .tl-item .tl-body{grid-row:2;}
  .tl-node{position:absolute;left:-11px;top:26px;grid-column:1;grid-row:1;width:44px;height:44px;font-size:14px;box-shadow:0 0 0 5px rgba(18,199,212,.1);}
  .section{padding-top:64px;}
  .section-head h2{font-size:26px;}
  .section-head{margin-bottom:28px;}
  .cta-block{padding:36px 24px;margin-top:64px;}
  .cta-block h2{font-size:24px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .crumb-bar{margin-top:96px;height:auto;padding:12px 16px;flex-direction:column;align-items:flex-start;gap:6px;}
  .grid-3,.grid-2{grid-template-columns:1fr;}
  .spec-row{grid-template-columns:1fr;gap:4px;padding:14px 18px;}
  .trust-row{grid-template-columns:1fr;max-width:none;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .phone{width:min(280px,100%);}
  .float-card-1{left:-2px;}
  .float-card-2{right:-2px;}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px;}
  .footer-bottom{font-size:12.5px;}
  .cta-buttons .btn{width:100%;}
}
@media (max-width:420px){
  .hero h1{font-size:25px;}
  .brand-name{font-size:15.5px;}
  .section-head h2{font-size:22px;}
  .tl-body h3{font-size:19px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --bg-900:#050D16;
  --bg-800:#0A1622;
  --bg-700:#0F2032;
  --primary:#12C7D4;
  --primary-600:#0FA8B6;
  --accent:#FFB43A;
  --success:#3BE08A;
  --danger:#FF6B6B;
  --text-1:#E9F4F8;
  --text-2:#9FB4C4;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(18,38,58,.55);
  --glass-soft:rgba(18,38,58,.34);
  --radius-pill:999px;
  --radius-card:18px;
  --radius-shot:20px;
  --radius-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 0 0 1px rgba(18,199,212,.5),0 12px 30px -10px rgba(18,199,212,.55);
  --container:1200px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background-color:var(--bg-900);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(18,199,212,.14), transparent 62%),
    radial-gradient(760px 420px at 96% 4%, rgba(255,180,58,.07), transparent 60%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--text-1);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(18,199,212,.32);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;position:relative;}
.section + .section{padding-top:0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:32px;line-height:1.25;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15.5px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);display:block;}
.divider-band{
  height:1px;border:0;margin:0;
  background:linear-gradient(105deg, transparent, rgba(18,199,212,.35), transparent);
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;padding:0 16px;
  transition:top .25s ease;
}
.nav{
  width:min(var(--container),100%);
  display:flex;align-items:center;gap:18px;
  height:64px;padding:0 14px 0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(10,22,34,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px -26px rgba(0,0,0,.9);
  transition:height .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled .nav{
  height:56px;background:rgba(8,18,28,.9);border-color:var(--line-strong);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;flex:0 0 auto;}
.brand-text{display:flex;align-items:center;gap:8px;}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;}
.brand-badge{
  font-size:11px;letter-spacing:.06em;padding:2px 8px;border-radius:var(--radius-pill);
  color:var(--primary);border:1px solid rgba(18,199,212,.4);background:rgba(18,199,212,.1);
}
.nav-list{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;height:44px;padding:0 16px;border-radius:var(--radius-pill);
  font-size:15px;color:var(--text-2);position:relative;transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--text-1);background:rgba(18,199,212,.14);}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;background:var(--text-1);
  transform:translate(-50%,-50%);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease,opacity .2s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{
  background:linear-gradient(180deg,#1AD6E3,var(--primary-600));
  color:#04222A;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{background:linear-gradient(180deg,#33E1ED,#12B9C7);color:#04222A;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(18,199,212,.6),0 16px 34px -10px rgba(18,199,212,.6);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.94);}
.btn-ghost{
  background:var(--glass);border-color:rgba(255,255,255,.18);color:var(--text-1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{border-color:rgba(18,199,212,.6);color:var(--text-1);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.text-link{
  color:var(--text-1);border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:2px;
  display:inline-flex;align-items:center;gap:8px;font-size:15px;
}
.text-link:hover{color:var(--primary);border-bottom-color:var(--primary);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;line-height:18px;letter-spacing:.04em;
  border:1px solid var(--line);background:rgba(255,255,255,.05);color:var(--text-2);
}
.badge-cyan{color:var(--primary);border-color:rgba(18,199,212,.4);background:rgba(18,199,212,.1);}
.badge-amber{color:var(--accent);border-color:rgba(255,180,58,.4);background:rgba(255,180,58,.1);}
.badge-green{color:var(--success);border-color:rgba(59,224,138,.35);background:rgba(59,224,138,.1);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;padding:150px 0 72px;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(5,13,22,.82),rgba(5,13,22,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.9;
}
.page-hero::after{
  content:"";position:absolute;left:-6%;top:-30%;width:620px;height:620px;z-index:0;
  background:radial-gradient(circle,rgba(18,199,212,.22),transparent 66%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumb{
  display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 18px;margin-bottom:26px;
  border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--glass-soft);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  font-size:13.5px;color:var(--text-2);
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb strong{color:var(--text-1);font-weight:600;}
.page-hero h1{
  font-size:48px;line-height:1.18;letter-spacing:-.01em;max-width:16em;margin-bottom:20px;
}
.page-hero .lede{
  max-width:720px;color:var(--text-2);font-size:16.5px;line-height:1.9;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:44px;
  max-width:760px;
}
.stat{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--glass);
  padding:18px 20px;box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.stat .num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--primary);letter-spacing:.02em;}
.stat .lab{font-size:13.5px;color:var(--text-2);margin-top:4px;}

/* ---------- 速查卡片 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  position:relative;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);box-shadow:var(--shadow-card);
  padding:24px;transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.4);}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:14.5px;line-height:1.85;}
.card-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,199,212,.12);border:1px solid rgba(18,199,212,.3);color:var(--primary);
  margin-bottom:16px;font-size:16px;
}
.card-icon.amber{background:rgba(255,180,58,.12);border-color:rgba(255,180,58,.34);color:var(--accent);}
.card-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:14px;color:var(--primary);
}
.card-link i{transition:transform .2s ease;}
.card-link:hover i{transform:translateX(4px);}

/* ---------- 8/4 分栏 ---------- */
.layout-8-4{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:24px;align-items:start;
}
.panel{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--glass);
  box-shadow:var(--shadow-card);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.panel-head{
  padding:22px 24px;border-bottom:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
}
.panel-head h2{font-size:22px;}
.panel-body{padding:8px 24px 20px;}
.faq-group{padding:18px 0 4px;}
.faq-group-title{
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--primary);
  display:flex;align-items:center;gap:10px;margin-bottom:6px;
}
.faq-group-title::after{content:"";flex:1;height:1px;background:var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:14px 0;cursor:pointer;list-style:none;
  font-size:15.5px;font-weight:600;color:var(--text-1);transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:var(--radius-pill);
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--primary);font-size:12px;
  transition:transform .24s ease,background .22s ease,border-color .22s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(18,199,212,.14);border-color:rgba(18,199,212,.4);}
.faq-body{padding:0 44px 18px 0;color:var(--text-2);font-size:15px;line-height:1.9;}
.faq-body strong{color:var(--text-1);font-weight:600;}

.side{display:grid;gap:24px;position:sticky;top:96px;}
.side-card{padding:24px;}
.side-card h3{font-size:19px;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.side-card h3 i{color:var(--primary);font-size:16px;}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:12px;font-size:14.5px;color:var(--text-2);line-height:1.85;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--primary);
}
.check-list li strong{color:var(--text-1);font-weight:600;}

/* ---------- 表单 ---------- */
.form-grid{display:grid;gap:16px;}
.field{display:grid;gap:8px;}
.field label{font-size:14px;color:var(--text-2);}
.field .req{color:var(--accent);margin-left:4px;}
.input,select,textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--text-1);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-input);
  padding:12px 14px;min-height:44px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
textarea{min-height:104px;resize:vertical;line-height:1.7;}
.input::placeholder,textarea::placeholder{color:rgba(159,180,196,.65);}
.input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(18,199,212,.16);background:rgba(255,255,255,.06);
}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field.has-error .input,.field.has-error textarea,.field.has-error select{border-color:var(--danger);}
.field .err{font-size:12.5px;color:var(--danger);display:none;}
.field.has-error .err{display:block;}
.form-note{font-size:12.5px;color:var(--text-2);line-height:1.7;}
.form-status{
  display:none;margin-top:4px;padding:12px 14px;border-radius:var(--radius-input);font-size:14px;
  border:1px solid rgba(59,224,138,.35);background:rgba(59,224,138,.1);color:var(--success);
}
.form-status.is-visible{display:block;}
.form-status.is-error{border-color:rgba(255,107,107,.4);background:rgba(255,107,107,.1);color:var(--danger);}

/* ---------- 自检清单（图文） ---------- */
.split{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;
}
.media-frame{
  border-radius:var(--radius-shot);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-700);box-shadow:var(--shadow-card);
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.step-list{counter-reset:step;display:grid;gap:18px;margin-top:28px;}
.step{
  display:flex;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass-soft);transition:border-color .22s ease,transform .22s ease;
}
.step:hover{border-color:rgba(18,199,212,.38);transform:translateY(-2px);}
.step .idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:var(--radius-pill);
  display:grid;place-items:center;font-family:var(--mono);font-size:13px;font-weight:700;
  color:#04222A;background:linear-gradient(180deg,#1AD6E3,var(--primary-600));
}
.step h3{font-size:16.5px;margin-bottom:6px;}
.step p{color:var(--text-2);font-size:14.5px;}

/* ---------- 分类导航卡 ---------- */
.cat-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-card);
  border:1px solid var(--line);background:var(--glass);box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease;
}
.cat-card:hover{transform:translateY(-4px);border-color:rgba(18,199,212,.42);}
.cat-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-700);}
.cat-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.cat-card:hover .thumb img{transform:scale(1.04);}
.cat-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cat-card .body h3{font-size:19px;}
.cat-card .body p{color:var(--text-2);font-size:14.5px;flex:1;}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(15,32,50,.92),rgba(10,22,34,.96));
  padding:48px;box-shadow:var(--shadow-card);
}
.cta-block::after{
  content:"";position:absolute;right:-10%;top:-40%;width:520px;height:520px;
  background:radial-gradient(circle,rgba(18,199,212,.22),transparent 66%);pointer-events:none;
}
.cta-block .inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-block h2{font-size:28px;margin-bottom:10px;}
.cta-block p{color:var(--text-2);font-size:15px;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;border-top:1px solid transparent;
  background:linear-gradient(180deg,rgba(5,13,22,.6),rgba(3,9,15,.98));
  position:relative;padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,199,212,.55),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-brand .logo-row{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .name{font-size:17px;font-weight:700;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.85;max-width:38ch;margin-bottom:16px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-2);}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  .nav-toggle{display:block;}
  .nav-list{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px;margin-left:0;
    border-radius:20px;border:1px solid var(--line-strong);
    background:rgba(8,18,28,.96);backdrop-filter:blur(16px);
    box-shadow:0 24px 48px -24px rgba(0,0,0,.9);
    display:none;
  }
  .nav-list.is-open{display:flex;}
  .nav-link{height:44px;border-bottom:1px solid var(--line);border-radius:12px;}
  .nav-link.is-active::after{display:none;}
  .nav-cta{display:none;}
  .nav{position:relative;}
  .layout-8-4{grid-template-columns:minmax(0,1fr);}
  .side{position:static;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .split{grid-template-columns:minmax(0,1fr);gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .page-hero{padding:126px 0 56px;}
  .page-hero h1{font-size:29px;line-height:1.28;}
  .page-hero .lede{font-size:15.5px;}
  .hero-stats{grid-template-columns:minmax(0,1fr);gap:14px;}
  .section-head h2{font-size:23px;}
  .grid-4,.grid-3{grid-template-columns:minmax(0,1fr);}
  .panel-body{padding:6px 18px 16px;}
  .faq-body{padding-right:0;}
  .cta-block{padding:32px 22px;border-radius:20px;}
  .cta-block h2{font-size:22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .site-footer{padding-top:48px;}
  .nav{height:58px;padding-right:10px;}
  .brand-name{font-size:16px;}
  .stat{padding:16px;}
}
@media (max-width:420px){
  .page-hero h1{font-size:25px;}
  .section-head h2{font-size:21px;}
  .card{padding:20px;}
  .btn{padding:0 18px;font-size:14.5px;}
  .brand-badge{display:none;}
}