/* roulang page: index */
:root{
  --bg-0:#050D14;
  --bg-1:#0A1622;
  --bg-2:rgba(255,255,255,.045);
  --line:rgba(122,201,255,.14);
  --brand:#17E2A8;
  --brand-2:#2F7BFF;
  --accent:#FF5A2B;
  --warn:#FFB547;
  --text:#E8F1F8;
  --muted:#8FA6B8;
  --muted-2:#63798C;
  --r-card:18px;
  --r-glass:20px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 44px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(23,226,168,.35),0 8px 30px rgba(23,226,168,.22);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"DIN Alternate","Bahnschrift","Roboto Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg-0);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
::selection{background:rgba(23,226,168,.3);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.muted{color:var(--muted)}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:32px;padding-right:32px}}
.section{padding:64px 0;position:relative}
@media(min-width:768px){.section{padding:96px 0}}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px}
.sec-head-left{max-width:680px}
.sec-title{
  font-size:clamp(22px,3.2vw,32px);line-height:1.25;font-weight:700;
  letter-spacing:-.01em;position:relative;padding-left:16px;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.sec-desc{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.75}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--brand);color:#04150F;box-shadow:0 0 0 1px rgba(23,226,168,.35),0 8px 30px rgba(23,226,168,.22)}
.btn-primary:hover{background:#25F2B9;box-shadow:0 0 0 1px rgba(23,226,168,.55),0 14px 40px rgba(23,226,168,.42);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98) translateY(0)}
.btn-ghost{background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(23,226,168,.08);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;transition:color .2s}
.text-link .arrow{display:inline-block;transition:transform .2s}
.text-link:hover{color:#5BF2C6}
.text-link:hover .arrow{transform:translateX(3px)}
.badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;line-height:1;font-weight:500;white-space:nowrap}
.badge-blue{background:rgba(47,123,255,.16);color:#93BDFF;border:1px solid rgba(47,123,255,.32)}
.badge-brand{background:rgba(23,226,168,.14);color:var(--brand);border:1px solid rgba(23,226,168,.3)}
.badge-warn{background:rgba(255,181,71,.14);color:var(--warn);border:1px solid rgba(255,181,71,.28)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;padding:14px 0;
  transition:padding .25s ease,background .25s ease,box-shadow .25s ease,backdrop-filter .25s ease;
}
.site-header.is-stuck{
  padding:8px 0;background:rgba(5,13,20,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;flex:0 0 auto}
.brand-text{transition:color .2s}
.brand:hover .brand-text{color:#fff}
.brand-mark{
  position:relative;width:28px;height:28px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 18px rgba(23,226,168,.45);
}
.brand-mark::after{
  content:"";position:absolute;left:10px;top:8px;width:0;height:0;
  border-left:9px solid #04150F;border-top:6px solid transparent;border-bottom:6px solid transparent;
}
.nav-links{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:var(--muted);transition:color .2s}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-actions .btn-ghost{display:none}
@media(min-width:1024px){.nav-actions .btn-ghost{display:inline-flex}}
.menu-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:border-color .2s,background .2s;
}
.menu-toggle:hover{border-color:rgba(23,226,168,.5);background:rgba(23,226,168,.08)}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .22s,opacity .22s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(min-width:1024px){.menu-toggle{display:none}}
.mobile-panel{
  display:none;position:absolute;top:100%;left:0;right:0;padding:10px 20px 22px;
  background:rgba(5,13,20,.97);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
}
.mobile-panel.is-open{display:block}
.mobile-panel a{display:block;padding:14px 4px;font-size:16px;color:var(--muted);border-bottom:1px solid var(--line);transition:color .2s,padding-left .2s}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a:hover{color:var(--brand);padding-left:10px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:128px 0 72px;overflow:hidden;isolation:isolate}
@media(min-width:768px){.hero{padding:152px 0 88px}}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg-img{
  position:absolute;inset:0;opacity:.3;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 560px at 78% 8%,rgba(23,226,168,.18),transparent 66%),
    radial-gradient(700px 420px at 6% 92%,rgba(47,123,255,.14),transparent 70%),
    linear-gradient(180deg,rgba(5,13,20,.55) 0%,rgba(5,13,20,.88) 58%,var(--bg-0) 100%);
}
.hero > .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1fr;gap:48px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:56px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--brand);background:rgba(23,226,168,.1);
  border:1px solid rgba(23,226,168,.28);margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);animation:blink 2s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero-title{font-size:clamp(28px,5vw,46px);line-height:1.15;font-weight:700;letter-spacing:-.01em;margin-bottom:18px}
.hero-title .hl{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16px;line-height:1.75;color:var(--muted);max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:42px;padding-top:26px;border-top:1px solid var(--line)}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.stat-num{font-family:var(--font-mono);font-size:24px;font-weight:700;line-height:1.2;letter-spacing:-.01em;color:var(--text)}
.stat-label{font-size:13px;color:var(--muted-2)}
.hero-visual{position:relative;display:flex;justify-content:center}
.phone-wrap{position:relative;width:100%;max-width:300px}
.phone-frame{
  position:relative;width:100%;aspect-ratio:9/16;border-radius:28px;overflow:hidden;isolation:isolate;
  border:1px solid rgba(255,255,255,.1);background:var(--bg-2);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:var(--sh-2);
}
.phone-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.phone-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,13,20,.3) 0%,rgba(5,13,20,.24) 42%,rgba(5,13,20,.88) 100%)}
.play-btn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:64px;height:64px;border-radius:50%;background:var(--brand);
  display:grid;place-items:center;
  box-shadow:0 0 0 10px rgba(23,226,168,.14),0 0 40px rgba(23,226,168,.5);
  transition:transform .2s ease,box-shadow .2s ease;
}
.play-btn::after{content:"";border-left:16px solid #04150F;border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);box-shadow:0 0 0 14px rgba(23,226,168,.18),0 0 52px rgba(23,226,168,.62)}
.play-btn:active{transform:translate(-50%,-50%) scale(.98)}
.phone-caption{position:absolute;left:16px;right:16px;bottom:16px;z-index:2}
.progress{height:3px;border-radius:2px;background:rgba(255,255,255,.18);overflow:hidden;margin-bottom:10px}
.progress i{display:block;height:100%;width:62%;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.phone-caption p{font-size:13px;color:var(--text)}
.phone-caption p.dim{font-size:12px;color:var(--muted-2);margin-top:2px}
.float-card{
  position:absolute;left:-10px;bottom:64px;z-index:3;
  display:flex;flex-direction:column;gap:2px;padding:12px 16px;border-radius:16px;
  background:rgba(10,22,34,.9);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--sh-1);
}
.float-card .stat-num{font-size:18px;color:var(--brand)}
.float-card .stat-label{font-size:12px}

/* ---------- 横滑带 ---------- */
.hscroll{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;padding-bottom:10px;user-select:none;
  scrollbar-width:none;-ms-overflow-style:none;
}
.hscroll::-webkit-scrollbar{display:none}
.hscroll > *{scroll-snap-align:start;flex:0 0 auto}

/* 爆款片段卡 9:16 */
.clip-card{
  position:relative;width:210px;aspect-ratio:9/16;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
@media(max-width:767px){.clip-card{width:60vw;max-width:228px}}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.clip-card::after{content:"";position:absolute;left:0;right:0;bottom:0;height:62%;background:linear-gradient(180deg,transparent,rgba(5,13,20,.94));pointer-events:none}
.clip-card:hover{transform:translateY(-4px);border-color:rgba(23,226,168,.55);box-shadow:var(--sh-glow)}
.clip-card:hover img{transform:scale(1.04)}
.clip-time{
  position:absolute;left:10px;top:10px;z-index:2;height:22px;padding:0 8px;
  display:inline-flex;align-items:center;border-radius:6px;background:rgba(0,0,0,.62);
  font-size:12px;color:#E8F1F8;
}
.clip-tag{
  position:absolute;right:10px;top:10px;z-index:2;height:22px;padding:0 10px;
  display:inline-flex;align-items:center;border-radius:999px;
  background:rgba(47,123,255,.72);font-size:12px;color:#fff;
}
.clip-body{position:absolute;left:12px;right:12px;bottom:12px;z-index:2}
.clip-title{
  font-size:14px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-views{margin-top:6px;font-size:12px;color:var(--muted-2)}

/* ---------- 种草清单 ---------- */
.tip-list{display:grid;grid-template-columns:1fr;border-top:1px solid var(--line)}
@media(min-width:1024px){.tip-list{grid-template-columns:repeat(2,1fr);column-gap:44px}}
.tip-item{display:flex;align-items:flex-start;gap:18px;padding:24px 0;border-bottom:1px solid var(--line)}
.tip-num{
  font-family:var(--font-mono);font-size:34px;line-height:1;font-weight:700;
  color:rgba(23,226,168,.32);-webkit-text-stroke:1px rgba(23,226,168,.7);
  flex:0 0 auto;min-width:52px;
}
.tip-body{flex:1;min-width:0}
.tip-title{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px}
.tip-desc{font-size:14px;line-height:1.7;color:var(--muted)}
.tip-arrow{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);font-size:15px;
  transition:background .2s,border-color .2s,transform .2s;
}
.tip-item:hover .tip-arrow{background:rgba(23,226,168,.12);border-color:rgba(23,226,168,.5);transform:translateX(3px)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{
  position:relative;display:flex;flex-direction:column;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-1);overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
@media(min-width:768px){.news-card.is-feature{grid-column:span 2}}
.news-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:3;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.6),transparent);
  opacity:0;transition:opacity .22s;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(23,226,168,.4);box-shadow:var(--sh-2)}
.news-card:hover::before{opacity:1}
.news-thumb{position:relative;width:100%;aspect-ratio:4/3;overflow:hidden;background:var(--bg-2)}
.news-card.is-feature .news-thumb{aspect-ratio:16/9}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{position:relative;padding:18px 20px 44px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted-2)}
.news-title{
  font-size:17px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-arrow{position:absolute;right:18px;bottom:16px;color:var(--brand);font-size:16px;transition:transform .22s}
.news-card:hover .news-arrow{transform:translateX(3px)}
.cms-empty{
  border:2px dashed var(--line);border-radius:var(--r-card);min-height:320px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;text-align:center;
}
.cms-empty svg{width:44px;height:44px;color:var(--muted-2)}
.cms-empty p{font-size:14px;color:var(--muted)}

/* ---------- 口碑卡 ---------- */
.review-card{
  width:300px;padding:20px;border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--bg-2);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  display:flex;flex-direction:column;gap:12px;transition:transform .22s,border-color .22s;
}
@media(max-width:767px){.review-card{width:78vw;max-width:318px}}
.review-card:hover{transform:translateY(-3px);border-color:rgba(23,226,168,.35)}
.review-head{display:flex;align-items:center;gap:12px}
.review-avatar{
  width:42px;height:42px;border-radius:50%;flex:0 0 auto;padding:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.review-avatar span{
  display:grid;place-items:center;width:100%;height:100%;border-radius:50%;
  background:var(--bg-1);font-size:15px;font-weight:700;color:var(--brand);
}
.review-name{font-size:14px;font-weight:600;line-height:1.3}
.review-badge{font-size:11px;color:var(--muted-2)}
.review-text{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.review-dots{display:flex;gap:6px;margin-top:auto}
.review-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.14)}
.review-dots i.on{background:var(--brand);box-shadow:0 0 8px rgba(23,226,168,.6)}

/* ---------- 数据条 ---------- */
.data-band{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-glass);overflow:hidden;
}
@media(min-width:1024px){.data-band{grid-template-columns:repeat(4,1fr)}}
.data-item{background:var(--bg-0);padding:28px 22px;display:flex;flex-direction:column;gap:6px;transition:background .22s}
.data-item:hover{background:var(--bg-1)}
.data-num{font-family:var(--font-mono);font-size:28px;font-weight:700;line-height:1.2;color:var(--brand)}
.data-label{font-size:13px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-split{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.faq-split{grid-template-columns:340px 1fr;gap:56px;align-items:start}}
.faq-item{
  border:1px solid var(--line);border-radius:14px;background:var(--bg-2);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s,background .22s,box-shadow .22s;
}
.faq-item[open]{border-color:rgba(23,226,168,.4);background:rgba(23,226,168,.05);box-shadow:inset 3px 0 0 var(--brand)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 54px 18px 20px;font-size:16px;font-weight:600;line-height:1.5;
  transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;line-height:1;color:var(--brand);transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item[open] summary{color:var(--brand)}
.faq-item summary:hover{color:var(--brand)}
.faq-answer{padding:0 20px 20px;font-size:14px;line-height:1.8;color:var(--muted)}
.faq-item[open] .faq-answer{animation:fadeIn .28s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;padding:72px 0;overflow:hidden}
@media(min-width:768px){.cta-band{padding:96px 0}}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 50% 0%,rgba(23,226,168,.22),transparent 70%),
    radial-gradient(520px 280px at 82% 100%,rgba(47,123,255,.16),transparent 72%);
}
.cta-inner{
  position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center;
  padding:52px 28px;border-radius:24px;border:1px solid var(--line);
  background:rgba(10,22,34,.62);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.cta-title{font-size:clamp(22px,3vw,30px);line-height:1.35;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
.cta-sub{font-size:15px;line-height:1.75;color:var(--muted);margin-bottom:28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:#030A10;border-top:1px solid var(--line);padding-top:56px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:44px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:48px}}
.footer-brand .brand{font-size:17px;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.85;color:var(--muted);max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--muted);transition:color .2s,padding-left .2s}
.footer-links a:hover{color:var(--brand);padding-left:4px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social span{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:11px;color:var(--muted);
  transition:border-color .2s,color .2s,background .2s;
}
.footer-social span:hover{border-color:var(--brand);color:var(--brand);background:rgba(23,226,168,.08)}
.footer-note{font-size:13px;color:var(--muted-2);margin-top:16px;line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:var(--muted-2);
}

/* ---------- 移动吸底 & 桌面浮动 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px;background:rgba(5,13,20,.93);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);box-shadow:0 -8px 28px rgba(0,0,0,.42);
}
.mobile-bar::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.75),transparent);
}
.mobile-bar-text{font-size:13px;color:var(--muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
@media(min-width:1024px){.mobile-bar{display:none}}
@media(max-width:1023px){body{padding-bottom:72px}}
.float-pill{
  position:fixed;right:28px;bottom:28px;z-index:70;display:none;align-items:center;gap:10px;
  height:52px;padding:0 22px;border-radius:999px;
  border:1px solid rgba(23,226,168,.45);background:rgba(5,13,20,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  font-size:14px;font-weight:600;color:var(--text);
  box-shadow:var(--sh-glow);opacity:0;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,background .2s ease;
}
@media(min-width:1024px){.float-pill{display:inline-flex}}
.float-pill.is-on{opacity:1;transform:translateY(0)}
.float-pill:hover{background:rgba(23,226,168,.14)}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);animation:blink 2s ease-in-out infinite}

/* roulang page: article */
:root{
  --bg-0:#050D14;
  --bg-1:#0A1622;
  --bg-deep:#030A10;
  --bg-2:rgba(255,255,255,.045);
  --line:rgba(122,201,255,.14);
  --brand:#17E2A8;
  --brand-2:#2F7BFF;
  --accent:#FF5A2B;
  --warn:#FFB547;
  --text:#E8F1F8;
  --muted:#8FA6B8;
  --muted-2:#63798C;
  --r-card:18px;
  --r-glass:20px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 44px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(23,226,168,.35), 0 8px 30px rgba(23,226,168,.22);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"DIN Alternate","Bahnschrift","Roboto Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(122,201,255,.07) 1px, transparent 1px);
  background-size:26px 26px;
  opacity:.5;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;}
.mono{font-family:var(--font-mono);letter-spacing:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media (min-width:768px){.container{padding:0 32px;}}
.container-wide{max-width:1400px;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  transition:background .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(10,22,34,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-1);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:76px;
  transition:height .3s ease;
}
.site-header.is-scrolled .header-inner{height:68px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:19px;
  flex-shrink:0;
}
.brand-mark{
  width:26px;height:26px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 0 1px rgba(23,226,168,.35), 0 6px 18px rgba(23,226,168,.22);
  position:relative;
  flex-shrink:0;
}
.brand-mark::after{
  content:"";
  position:absolute;inset:9px 8px;
  border-radius:3px;
  background:#04121A;
}
.brand-text{color:var(--text);white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--brand);}
.nav-links{display:none;align-items:center;gap:26px;margin-left:16px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 2px;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:2px;border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  padding:11px 20px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease, color .2s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#0FC396);
  color:#04140F;
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{
  filter:brightness(1.06);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(23,226,168,.5), 0 12px 34px rgba(23,226,168,.3);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--brand);
  background:rgba(23,226,168,.08);
  transform:translateY(-1px);
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  background:none;border:none;cursor:pointer;padding:6px 2px;
}
.btn-text span.arrow{transition:transform .2s ease;display:inline-block;}
.btn-text:hover span.arrow{transform:translateX(2px);}
.btn-text:hover{color:#5BF0C6;}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--bg-2);
  cursor:pointer;
}
.menu-toggle:hover{border-color:var(--brand);}
.menu-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .25s ease, top .25s ease;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;
  position:fixed;
  inset:76px 0 auto 0;
  z-index:55;
  background:rgba(6,15,23,.97);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:18px 20px 24px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;
  padding:13px 4px;
  font-size:16px;
  color:var(--muted);
  border-bottom:1px solid rgba(122,201,255,.1);
}
.mobile-drawer a.is-active{color:var(--brand);font-weight:600;}
.mobile-drawer a:hover{color:var(--text);}
.mobile-drawer .btn{margin-top:16px;width:100%;}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .menu-toggle{display:none;}
  .mobile-drawer{display:none !important;}
}

/* ============ 通用区块 ============ */
.section{padding:64px 0;position:relative;}
@media (min-width:768px){.section{padding:88px 0;}}
.section-alt{background:var(--bg-1);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;
  padding:6px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-2);
  color:var(--muted);
  letter-spacing:.06em;
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 8px var(--brand);
  display:inline-block;
}
h1,h2,h3{letter-spacing:-.01em;line-height:1.25;}
.h2{font-size:clamp(22px,3.2vw,32px);font-weight:700;line-height:1.25;}
.h2-bar{
  display:inline-block;
  padding-left:14px;
  position:relative;
}
.h2-bar::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.lead{color:var(--muted);font-size:15px;line-height:1.8;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;
  padding:4px 10px;
  border-radius:999px;
  background:rgba(47,123,255,.16);
  color:#9DC2FF;
  border:1px solid rgba(47,123,255,.28);
}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;
  padding:6px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-2);
  color:var(--muted);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{border-color:var(--brand);color:var(--text);transform:translateY(-1px);}

/* ============ 文章头 ============ */
.article-hero{
  padding:112px 0 26px;
  position:relative;
}
.article-hero::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(720px 320px at 18% 0%, rgba(23,226,168,.14), transparent 70%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted-2);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--muted-2);opacity:.6;}
.breadcrumb .current{color:var(--muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
@media (max-width:640px){.breadcrumb .current{white-space:normal;}}
.article-title{
  font-size:clamp(26px,4vw,42px);
  font-weight:700;
  line-height:1.2;
  max-width:960px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;
  font-size:13px;
  color:var(--muted);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--muted-2);display:inline-block;}
.meta-row .time{font-family:var(--font-mono);color:var(--warn);letter-spacing:0;}
.divider{
  height:1px;
  background:linear-gradient(90deg, rgba(23,226,168,.55), rgba(122,201,255,.12) 45%, transparent);
  margin:26px 0 0;
}
.cover-figure{margin-top:30px;}
.cover-frame{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  background:var(--bg-1);
}
.cover-frame img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
  transform:scale(1.01);
}
.cover-frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(5,13,20,.05) 40%, rgba(5,13,20,.72));
  pointer-events:none;
}
.cover-caption{
  margin-top:12px;
  font-size:13px;
  color:var(--muted-2);
  text-align:center;
}

/* ============ 阅读区 ============ */
.reading-wrap{
  padding:44px 0 0;
}
.reading-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:36px;
}
@media (min-width:1024px){
  .reading-grid{grid-template-columns:minmax(0,760px) 220px;gap:56px;}
}
.article-body{max-width:760px;font-size:16px;line-height:1.75;}
.article-body > * + *{margin-top:18px;}
.article-body p{color:#D6E4EE;}
.article-body h2{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:700;
  line-height:1.35;
  margin-top:40px;
  padding-left:14px;
  position:relative;
  color:var(--text);
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  margin-top:28px;
  color:var(--text);
}
.article-body ul,.article-body ol{padding-left:22px;}
.article-body ul{list-style:none;}
.article-body ul > li{position:relative;padding-left:6px;margin-top:10px;color:#D6E4EE;}
.article-body ul > li::before{
  content:"";
  position:absolute;left:-16px;top:11px;
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 8px rgba(23,226,168,.7);
}
.article-body ol{list-style:decimal;color:#D6E4EE;}
.article-body ol > li{margin-top:10px;padding-left:4px;}
.article-body ol::marker,.article-body ol > li::marker{color:var(--brand);font-family:var(--font-mono);}
.article-body blockquote{
  margin-top:26px;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  border-radius:12px;
  background:var(--bg-2);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  color:var(--muted);
  font-size:15px;
}
.article-body img{border-radius:var(--r-img);margin-top:26px;width:100%;}
.article-body figure{margin-top:26px;}
.article-body figcaption{
  margin-top:10px;font-size:13px;color:var(--muted-2);text-align:center;
}
.article-body a{color:var(--brand-2);border-bottom:1px solid rgba(47,123,255,.4);transition:color .2s ease,border-color .2s ease;}
.article-body a:hover{color:var(--brand);border-color:var(--brand);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin-top:26px;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:11px 14px;
  text-align:left;
  border-bottom:1px solid rgba(122,201,255,.1);
}
.article-body thead th{background:rgba(47,123,255,.14);color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.025);}
.article-body .tip,.article-body .warn{
  padding:15px 18px;
  border-radius:12px;
  background:var(--bg-2);
  font-size:15px;
  margin-top:26px;
}
.article-body .tip{border-left:3px solid var(--brand-2);}
.article-body .warn{border-left:3px solid var(--warn);}

/* 目录 */
.toc{
  display:none;
}
@media (min-width:1024px){
  .toc{display:block;position:sticky;top:104px;}
}
.toc-title{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted-2);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  font-size:13.5px;
  color:var(--muted);
  padding:7px 10px;
  border-left:2px solid transparent;
  border-radius:0 8px 8px 0;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.toc-list a.is-sub{padding-left:22px;font-size:12.5px;color:var(--muted-2);}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.035);}
.toc-list a.is-current{
  color:var(--brand);
  border-left-color:var(--brand);
  background:rgba(23,226,168,.07);
}
.toc-mobile{
  margin-bottom:26px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--bg-2);
  overflow:hidden;
}
@media (min-width:1024px){.toc-mobile{display:none;}}
.toc-mobile summary{
  cursor:pointer;
  list-style:none;
  padding:14px 16px;
  font-size:14px;
  font-weight:600;
  display:flex;align-items:center;justify-content:space-between;
}
.toc-mobile summary::-webkit-details-marker{display:none;}
.toc-mobile summary::after{
  content:"+";
  color:var(--brand);
  font-family:var(--font-mono);
  font-size:18px;
  transition:transform .25s ease;
}
.toc-mobile[open] summary::after{transform:rotate(45deg);}
.toc-mobile .toc-list{padding:0 12px 14px;}

/* 缺省内容 */
.not-found{
  border:2px dashed var(--line);
  border-radius:var(--r-card);
  padding:56px 24px;
  text-align:center;
  background:var(--bg-2);
}
.not-found svg{width:44px;height:44px;margin:0 auto 16px;stroke:var(--brand);}
.not-found p{font-size:15px;color:var(--muted);margin-bottom:20px;}

/* ============ 文末 ============ */
.tail-section{padding:56px 0 0;}
.tail-label{
  font-size:13px;color:var(--muted-2);margin-bottom:12px;
  letter-spacing:.08em;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.pager{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
  margin-bottom:44px;
}
@media (min-width:640px){.pager{grid-template-columns:1fr 1fr;}}
.pager-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:20px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.pager-card:hover{border-color:rgba(23,226,168,.4);transform:translateY(-2px);box-shadow:var(--sh-1);}
.pager-card .kicker{font-size:12px;color:var(--muted-2);font-family:var(--font-mono);letter-spacing:.06em;}
.pager-card .pt{font-size:16px;font-weight:600;line-height:1.5;}
.pager-card .pd{font-size:13.5px;color:var(--muted);}
.pager-card.next{text-align:right;}

.rel-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,1fr);}}
.rel-card{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-1);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(23,226,168,.4);box-shadow:var(--sh-1);}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:16px 18px 20px;}
.rel-body .rt{
  font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body .rm{
  margin-top:12px;font-size:12px;color:var(--muted-2);
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--font-mono);
}
.back-row{margin-top:34px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r-glass);
  padding:44px 26px;
  text-align:center;
  overflow:hidden;
  background:var(--bg-1);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:-40% -10% auto -10%;
  height:340px;
  background:radial-gradient(closest-side, rgba(255,90,43,.22), transparent 70%);
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:auto -10% -50% -10%;
  height:320px;
  background:radial-gradient(closest-side, rgba(23,226,168,.2), transparent 70%);
  pointer-events:none;
}
.cta-band h2{position:relative;z-index:1;font-size:clamp(22px,3vw,30px);font-weight:700;}
.cta-band p{position:relative;z-index:1;color:var(--muted);margin-top:14px;font-size:15px;}
.cta-actions{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
  margin-top:26px;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  margin-top:72px;
  position:relative;
  z-index:1;
}
.site-footer::before{
  content:"";
  position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  padding:56px 0 40px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;}
}
.footer-brand .brand{margin-bottom:16px;}
.footer-desc{font-size:13.5px;color:var(--muted);line-height:1.8;max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.footer-social span{
  font-size:12px;color:var(--muted-2);
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 12px;
  transition:color .2s ease,border-color .2s ease;
}
.footer-social span:hover{color:var(--text);border-color:var(--brand);}
.footer-title{font-size:13px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.06em;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:13.5px;color:var(--muted);transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-links a:hover{color:var(--brand);transform:translateX(2px);}
.footer-note{font-size:12px;color:var(--muted-2);margin-top:14px;}
.footer-bottom{
  border-top:1px solid rgba(122,201,255,.1);
  padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;
  font-size:12px;
  color:var(--muted-2);
}

/* ============ 浮动转化 ============ */
.float-pill{
  display:none;
}
@media (min-width:1024px){
  .float-pill{
    display:inline-flex;
    align-items:center;gap:12px;
    position:fixed;
    right:28px;bottom:28px;
    z-index:50;
    padding:10px 14px 10px 18px;
    border-radius:999px;
    border:1px solid rgba(23,226,168,.4);
    background:rgba(10,22,34,.85);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:var(--sh-glow);
    opacity:0;
    transform:translateY(12px);
    pointer-events:none;
    transition:opacity .3s ease,transform .3s ease;
  }
  .float-pill.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
  .float-pill span{font-size:13px;color:var(--muted);}
}
.mobile-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:50;
  display:flex;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(10,22,34,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid rgba(23,226,168,.16);
  min-height:64px;
}
.mobile-bar::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.7),transparent);
}
.mobile-bar .mb-text{font-size:13px;color:var(--muted);line-height:1.4;flex:1;min-width:0;}
.mobile-bar .mb-text b{display:block;color:var(--text);font-size:14px;}
@media (min-width:1024px){.mobile-bar{display:none;}}
.article-bottom-pad{padding-bottom:96px;}
@media (min-width:1024px){.article-bottom-pad{padding-bottom:0;}}

/* roulang page: category1 */
:root{
  --bg-0:#050D14;
  --bg-1:#0A1622;
  --bg-2:rgba(255,255,255,.045);
  --line:rgba(122,201,255,.14);
  --brand:#17E2A8;
  --brand-2:#2F7BFF;
  --accent:#FF5A2B;
  --warn:#FFB547;
  --text:#E8F1F8;
  --muted:#8FA6B8;
  --muted-2:#63798C;
  --r-card:18px;
  --r-glass:20px;
  --r-btn:12px;
  --r-img:14px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 44px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(23,226,168,.35), 0 8px 30px rgba(23,226,168,.22);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"DIN Alternate","Bahnschrift","Roboto Condensed",ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.mono{font-family:var(--font-mono);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){ .container{padding:0 32px;} }

/* ================= Header ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,13,20,.55);
  border-bottom:1px solid transparent;
  transition:background .28s ease, box-shadow .28s ease, border-color .28s ease, height .28s ease;
}
.site-header.is-scrolled{
  background:rgba(5,13,20,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:74px;
  transition:height .28s ease;
}
.site-header.is-scrolled .header-inner{height:66px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:19px;
  letter-spacing:-.01em;
  color:var(--text);
  white-space:nowrap;
}
.brand-mark{
  width:12px;
  height:12px;
  border-radius:4px;
  background:var(--brand);
  box-shadow:0 0 14px rgba(23,226,168,.75);
  flex:none;
}
.brand-text .hl{color:var(--brand);}
.nav-links{display:none;align-items:center;gap:2px;margin-left:14px;}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--muted);
  transition:color .2s ease, background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;border-radius:2px;
  background:var(--brand);
  opacity:0;
  transform:scaleX(.35);
  transition:opacity .22s ease, transform .22s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.045);}
.nav-link:hover::after{opacity:1;transform:scaleX(1);}
.nav-link.is-active{color:var(--text);background:rgba(23,226,168,.1);}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.nav-actions{display:none;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  margin-left:auto;
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.04);
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:rgba(23,226,168,.5);background:rgba(23,226,168,.08);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);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);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .nav-actions{display:flex;}
  .nav-toggle{display:none;}
}
.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(5,13,20,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:14px 20px 20px;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:block;
  padding:12px 14px;
  border-radius:12px;
  color:var(--muted);
  font-size:15px;
  border:1px solid transparent;
  transition:.2s ease;
}
.mobile-menu a:hover{color:var(--text);background:rgba(255,255,255,.045);}
.mobile-menu a.is-active{color:var(--text);border-color:rgba(23,226,168,.35);background:rgba(23,226,168,.08);}

/* ================= Buttons ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease, box-shadow .24s ease, background .22s ease, border-color .22s ease, filter .22s ease;
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{
  background:var(--brand);
  color:#04140E;
  box-shadow:0 8px 26px rgba(23,226,168,.26), 0 0 44px rgba(255,90,43,.16);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 12px 34px rgba(23,226,168,.4), 0 0 60px rgba(255,90,43,.24);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:rgba(23,226,168,.6);
  background:rgba(23,226,168,.08);
  transform:translateY(-1px);
}
.btn-sm{padding:9px 16px;font-size:14px;}
.text-btn{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:color .2s ease;
}
.text-btn i{transition:transform .22s ease;font-style:normal;}
.text-btn:hover{color:#5AF0C3;}
.text-btn:hover i{transform:translateX(3px);}

/* ================= Page hero band ================= */
.page-hero{
  position:relative;
  min-height:250px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(5,13,20,.72) 0%, rgba(5,13,20,.9) 60%, rgba(5,13,20,.97) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:38px;padding-bottom:38px;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted-2);flex-wrap:wrap;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--muted-2);}
.page-title{
  margin:14px 0 12px;
  font-size:clamp(26px,4.4vw,40px);
  line-height:1.18;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:900px;
}
.page-title .hl{
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.page-lead{
  max-width:760px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.8;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  font-size:12px;
  color:var(--muted);
}
.tag strong{color:var(--brand);font-weight:600;}

/* ================= Sections ================= */
.section{padding:60px 0;}
@media (min-width:768px){ .section{padding:92px 0;} }
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:30px;display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.section-title{
  display:flex;align-items:center;gap:12px;
  font-size:clamp(21px,3.2vw,30px);
  font-weight:700;letter-spacing:-.01em;line-height:1.3;
}
.section-title::before{
  content:"";width:4px;height:1.05em;border-radius:2px;background:var(--brand);flex:none;
  box-shadow:0 0 14px rgba(23,226,168,.6);
}
.section-sub{color:var(--muted);font-size:14.5px;margin-top:10px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  border:1px solid rgba(23,226,168,.35);
  background:rgba(23,226,168,.08);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em;
}

/* ================= Split (alternating text/image) ================= */
.split{display:grid;gap:30px;align-items:center;}
@media (min-width:900px){
  .split{grid-template-columns:1fr 1fr;gap:56px;}
  .split.reverse .split-media{order:2;}
}
.split-body p{color:var(--muted);font-size:15.5px;line-height:1.85;margin-top:16px;}
.split-body h3{
  font-size:clamp(19px,2.4vw,23px);
  font-weight:700;line-height:1.35;margin-top:14px;letter-spacing:-.005em;
}
.mini-list{margin-top:20px;display:grid;gap:12px;}
.mini-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--muted);
}
.mini-list li::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--brand);flex:none;margin-top:9px;
  box-shadow:0 0 10px rgba(23,226,168,.7);
}
.media-frame{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  aspect-ratio:4/3;
  background:var(--bg-1);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.media-frame:hover img{transform:scale(1.03);}
.media-badge{
  position:absolute;left:16px;top:16px;
  padding:5px 12px;border-radius:999px;
  background:rgba(5,13,20,.7);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  font-size:12px;font-family:var(--font-mono);color:var(--text);
}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:34px 18px 16px;
  background:linear-gradient(180deg,transparent,rgba(5,13,20,.92));
  font-size:13px;color:var(--muted);
}

/* ================= Numbered checklist ================= */
.check-list{border-top:1px solid var(--line);}
.check-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:24px 4px;
  border-bottom:1px solid var(--line);
  transition:background .25s ease, padding-left .25s ease;
}
.check-item:hover{background:rgba(255,255,255,.028);padding-left:12px;}
.check-num{
  font-family:var(--font-mono);
  font-size:clamp(38px,4.6vw,54px);
  line-height:.9;
  font-weight:700;
  color:transparent;
  -webkit-text-stroke:1px rgba(23,226,168,.5);
  flex:none;
  min-width:66px;
}
.check-body{flex:1;}
.check-body h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.check-body p{font-size:14px;color:var(--muted);line-height:1.8;}
.round-arrow{
  flex:none;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:16px;
  transition:.24s ease;
}
.check-item:hover .round-arrow{
  border-color:rgba(23,226,168,.6);
  background:rgba(23,226,168,.1);
  transform:translateX(3px);
}

/* ================= Data strip ================= */
.data-strip{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
@media (min-width:768px){ .data-strip{grid-template-columns:repeat(4,1fr);} }
.data-cell{padding:26px 22px;background:var(--bg-1);transition:background .24s ease;}
.data-cell:hover{background:#0D1E2E;}
.data-num{
  font-family:var(--font-mono);
  font-size:clamp(24px,3.2vw,32px);
  font-weight:700;
  color:var(--brand);
  letter-spacing:-.01em;
}
.data-label{margin-top:8px;font-size:13px;color:var(--muted);}

/* ================= Reading cards ================= */
.read-grid{display:grid;gap:20px;}
@media (min-width:768px){ .read-grid{grid-template-columns:repeat(3,1fr);} }
.read-card{
  display:block;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-1);
  box-shadow:var(--sh-1);
  transition:transform .26s ease, border-color .26s ease, box-shadow .26s ease;
}
.read-card:hover{
  transform:translateY(-4px);
  border-color:rgba(23,226,168,.45);
  box-shadow:var(--sh-glow);
}
.read-thumb{aspect-ratio:16/9;overflow:hidden;background:#07121B;}
.read-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.read-card:hover .read-thumb img{transform:scale(1.04);}
.read-body{padding:18px 20px 22px;}
.read-badge{
  display:inline-block;
  padding:3px 10px;border-radius:999px;
  background:rgba(47,123,255,.16);
  border:1px solid rgba(47,123,255,.35);
  color:#8FC0FF;font-size:12px;
}
.read-title{font-size:16.5px;font-weight:600;line-height:1.55;margin:12px 0 8px;}
.read-desc{font-size:13.5px;color:var(--muted);line-height:1.75;}
.read-meta{
  margin-top:14px;font-family:var(--font-mono);font-size:12px;color:var(--muted-2);
  display:flex;align-items:center;justify-content:space-between;
}

/* ================= CTA band ================= */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-glass);
  background:var(--bg-1);
  padding:52px 26px;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(65% 130% at 50% 0%, rgba(23,226,168,.24), transparent 68%),
             radial-gradient(48% 110% at 82% 100%, rgba(255,90,43,.16), transparent 70%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-title{
  font-size:clamp(21px,3.3vw,30px);
  font-weight:700;letter-spacing:-.01em;line-height:1.35;
  max-width:720px;margin:0 auto;
}
.cta-desc{color:var(--muted);font-size:15px;margin:16px auto 0;max-width:640px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px;}

/* ================= Footer ================= */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  position:relative;
  padding:56px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.6),transparent);
}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;} }
.footer-brand .brand{font-size:19px;}
.footer-desc{color:var(--muted);font-size:14px;line-height:1.85;margin-top:16px;max-width:420px;}
.footer-social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.footer-social span{
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);
  font-size:12px;color:var(--muted);background:rgba(255,255,255,.03);
  transition:.22s ease;
}
.footer-social span:hover{color:var(--brand);border-color:rgba(23,226,168,.45);}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-links{display:grid;gap:11px;}
.footer-links a{
  color:var(--muted);font-size:14px;
  transition:color .2s ease, transform .2s ease;
  display:inline-block;
}
.footer-links a:hover{color:var(--brand);transform:translateX(3px);}
.footer-note{margin-top:16px;font-size:13px;color:var(--muted-2);}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;
  font-size:12px;color:var(--muted-2);
}

/* ================= Sticky bar / float pill ================= */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;align-items:center;gap:12px;
  padding:10px 16px;
  min-height:64px;
  background:rgba(5,13,20,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.sticky-bar::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,226,168,.7),transparent);
}
.sticky-bar .bar-text{font-size:13px;color:var(--muted);line-height:1.4;}
.sticky-bar .bar-text strong{display:block;color:var(--text);font-size:14px;font-weight:600;}
.sticky-bar .btn{margin-left:auto;}
.float-pill{
  position:fixed;right:28px;bottom:28px;z-index:90;
  display:none;align-items:center;gap:10px;
  padding:12px 20px;border-radius:999px;
  border:1px solid rgba(23,226,168,.45);
  background:rgba(5,13,20,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 0 0 1px rgba(23,226,168,.2), 0 12px 36px rgba(23,226,168,.2);
  font-size:14px;font-weight:600;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s ease, transform .3s ease, visibility .3s;
}
.float-pill:hover{background:rgba(23,226,168,.12);}
.float-pill.is-show{opacity:1;visibility:visible;transform:translateY(0);}
@media (min-width:1024px){
  .sticky-bar{display:none;}
  .float-pill{display:inline-flex;}
}

/* 移动端底部安全间距 */
@media (max-width:1023px){
  body{padding-bottom:76px;}
}

/* roulang page: category2 */
:root{
    --bg-0:#050D14;
    --bg-1:#0A1622;
    --bg-2:rgba(255,255,255,.045);
    --line:rgba(122,201,255,.14);
    --brand:#17E2A8;
    --brand-2:#2F7BFF;
    --accent:#FF5A2B;
    --warn:#FFB547;
    --text:#E8F1F8;
    --muted:#8FA6B8;
    --muted-2:#63798C;
    --r-card:18px;
    --r-glass:20px;
    --r-btn:12px;
    --r-img:14px;
    --sh-1:0 8px 24px rgba(0,0,0,.35);
    --sh-2:0 16px 44px rgba(0,0,0,.45);
    --sh-glow:0 0 0 1px rgba(23,226,168,.35), 0 8px 30px rgba(23,226,168,.22);
    --sans:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --mono:"DIN Alternate","Bahnschrift","Roboto Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text);
    font-family:var(--sans);
    font-size:16px;
    line-height:1.75;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0}
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}
  .mono{font-family:var(--mono)}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(5,13,20,.76);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
  }
  .site-header.is-scrolled{
    background:rgba(5,13,20,.92);
    border-bottom-color:var(--line);
    box-shadow:var(--sh-1);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    height:78px;transition:height .3s ease;position:relative;
  }
  .site-header.is-scrolled .header-inner{height:70px}
  .brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;white-space:nowrap;letter-spacing:-.01em}
  .brand-mark{
    width:12px;height:12px;border-radius:50%;flex:none;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    box-shadow:0 0 0 4px rgba(23,226,168,.12);
  }
  .brand-accent{color:var(--brand)}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-link{
    position:relative;display:inline-block;
    padding:9px 12px;font-size:15px;color:var(--muted);
    border-radius:10px;transition:color .2s ease,background .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--text);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:10px}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
    color:var(--text);align-items:center;justify-content:center;font-size:17px;
    transition:border-color .2s ease,background .2s ease;
  }
  .nav-toggle:hover{border-color:var(--brand);background:rgba(23,226,168,.08)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
    border:1px solid transparent;white-space:nowrap;
    transition:transform .2s ease,filter .2s ease,background .2s ease,border-color .2s ease,box-shadow .25s ease;
  }
  .btn:active{transform:scale(.98)}
  .btn-primary{
    background:var(--brand);color:#04150F;
    box-shadow:0 0 0 1px rgba(23,226,168,.4),0 12px 34px rgba(23,226,168,.24),0 6px 22px rgba(255,90,43,.16);
  }
  .btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(23,226,168,.55),0 16px 42px rgba(23,226,168,.34),0 8px 26px rgba(255,90,43,.22)}
  .btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
  .btn-ghost:hover{border-color:var(--brand);background:rgba(23,226,168,.08)}
  .btn-sm{padding:9px 16px;font-size:14px}
  .link-more{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
  .link-more .arrow{transition:transform .2s ease}
  .link-more:hover .arrow{transform:translateX(3px)}

  /* ---------- hero ---------- */
  .page-hero{position:relative;padding:40px 0 0;overflow:hidden}
  .page-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(122,201,255,.055) 1px,transparent 1px),
      linear-gradient(90deg,rgba(122,201,255,.055) 1px,transparent 1px);
    background-size:52px 52px;
    -webkit-mask-image:radial-gradient(circle at 50% -10%,#000 0%,transparent 72%);
    mask-image:radial-gradient(circle at 50% -10%,#000 0%,transparent 72%);
  }
  .breadcrumb{position:relative;display:flex;flex-wrap:wrap;gap:9px;align-items:center;font-size:13px;color:var(--muted-2);margin-bottom:18px}
  .breadcrumb a{transition:color .2s ease}
  .breadcrumb a:hover{color:var(--brand)}
  .crumb-sep{opacity:.6}
  .crumb-current{color:var(--muted)}
  .page-title{position:relative;font-size:clamp(28px,5vw,46px);line-height:1.15;max-width:920px;margin-bottom:16px}
  .page-title .grad{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .page-lead{position:relative;color:var(--muted);font-size:16px;max-width:720px}

  .visual-card{
    position:relative;margin-top:34px;border-radius:var(--r-glass);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--sh-2);aspect-ratio:16/9;background:var(--bg-1);
  }
  .visual-card img{width:100%;height:100%;object-fit:cover;transform:scale(1.01)}
  .visual-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,13,20,.10) 0%,rgba(5,13,20,.55) 52%,rgba(5,13,20,.94) 100%)}
  .corner-tag{
    position:absolute;top:16px;display:inline-flex;align-items:center;gap:6px;
    padding:6px 12px;border-radius:999px;font-size:12px;font-family:var(--mono);
    background:rgba(8,18,28,.74);border:1px solid var(--line);color:var(--brand);
    backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  }
  .corner-tag.left{left:16px}
  .corner-tag.right{right:16px;color:var(--warn)}
  .visual-caption{position:absolute;left:0;right:0;bottom:0;padding:24px 24px 26px;z-index:2}
  .visual-caption h2{font-size:clamp(18px,2.6vw,26px);line-height:1.3;margin-bottom:8px}
  .visual-caption p{color:var(--muted);font-size:14px;max-width:640px}

  /* ---------- sections ---------- */
  .section{padding:64px 0;position:relative}
  @media (min-width:768px){.section{padding:92px 0}}
  .section-alt{background:var(--bg-1)}
  .section-photo{
    background-image:linear-gradient(180deg,rgba(5,13,20,.90),rgba(5,13,20,.96)),url('/assets/images/backpic/back-3.png');
    background-size:cover;background-position:center;
  }
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px}
  .section-title{position:relative;padding-left:16px;font-size:clamp(22px,3.2vw,32px);line-height:1.25}
  .section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--brand)}
  .section-sub{color:var(--muted);font-size:15px;margin-top:10px;max-width:660px}

  /* ---------- timeline ---------- */
  .timeline{position:relative;max-width:860px}
  .timeline::before{
    content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;border-radius:2px;
    background:linear-gradient(180deg,rgba(23,226,168,.85),rgba(47,123,255,.35),rgba(47,123,255,0));
  }
  .tl-item{position:relative;padding:0 0 30px 64px}
  .tl-item:last-child{padding-bottom:0}
  .tl-node{
    position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
    display:grid;place-items:center;font-family:var(--mono);font-size:15px;font-weight:700;color:var(--brand);
    background:rgba(10,22,34,.95);border:1px solid rgba(23,226,168,.45);
    box-shadow:0 0 0 6px rgba(23,226,168,.06);
  }
  .tl-card{
    background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px 22px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
    transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
  }
  .tl-card:hover{border-color:rgba(23,226,168,.38);transform:translateY(-2px);box-shadow:var(--sh-1)}
  .tl-title{font-size:18px;font-weight:600;margin-bottom:6px}
  .tl-text{color:var(--muted);font-size:15px}
  .tl-meta{font-family:var(--mono);font-size:12px;color:var(--warn);margin-top:10px}

  /* ---------- split blocks ---------- */
  .split{display:grid;gap:28px;align-items:center}
  .split + .split{margin-top:56px}
  @media (min-width:900px){
    .split{grid-template-columns:1.04fr 1fr;gap:56px}
    .split + .split{margin-top:80px}
    .split.reverse .split-media{order:2}
  }
  .split-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;box-shadow:var(--sh-1);background:var(--bg-1)}
  .split-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
  .split-media:hover img{transform:scale(1.03)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;
    color:var(--brand);padding:5px 12px;border-radius:999px;border:1px solid rgba(23,226,168,.3);
    background:rgba(23,226,168,.07);margin-bottom:14px;
  }
  .split h2{font-size:clamp(20px,2.6vw,28px);line-height:1.3;margin-bottom:14px}
  .split p{color:var(--muted);font-size:15.5px}
  .split p + p{margin-top:12px}
  .mini-list{margin-top:16px;display:grid;gap:10px}
  .mini-list li{position:relative;padding-left:20px;color:var(--muted);font-size:15px}
  .mini-list li::before{content:"";position:absolute;left:2px;top:10px;width:7px;height:7px;border-radius:50%;background:var(--brand)}

  /* ---------- point cards ---------- */
  .point-grid{display:grid;gap:20px;grid-template-columns:1fr}
  @media (min-width:768px){.point-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
  .point-card{
    background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
    padding:26px 26px 24px;position:relative;overflow:hidden;
    transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  }
  .point-card::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(122,201,255,.35),transparent);
  }
  .point-card:hover{transform:translateY(-3px);border-color:rgba(23,226,168,.4);box-shadow:var(--sh-1)}
  .point-icon{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
    background:rgba(23,226,168,.1);border:1px solid rgba(23,226,168,.25);color:var(--brand);
  }
  .point-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
  .point-card p{color:var(--muted);font-size:14.5px}

  /* ---------- data strip ---------- */
  .data-strip{
    display:grid;gap:1px;grid-template-columns:1fr;margin-top:44px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  }
  @media (min-width:640px){.data-strip{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.data-strip{grid-template-columns:repeat(4,1fr)}}
  .data-cell{background:var(--bg-0);padding:24px 22px}
  .data-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1.2}
  .data-label{font-size:13px;color:var(--muted);margin-top:6px}

  /* ---------- faq ---------- */
  .faq-layout{display:grid;gap:28px}
  @media (min-width:1024px){.faq-layout{grid-template-columns:340px 1fr;gap:52px}}
  .faq-aside p{color:var(--muted);font-size:15px;margin-top:14px}
  .faq-list{display:grid;gap:12px}
  details.faq-item{
    border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);
    padding:0 20px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
  }
  details.faq-item:hover{border-color:rgba(23,226,168,.3)}
  details.faq-item[open]{border-color:rgba(23,226,168,.38);box-shadow:inset 3px 0 0 var(--brand)}
  details.faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    padding:18px 42px 18px 0;font-size:16px;font-weight:600;color:var(--text);
  }
  details.faq-item summary::-webkit-details-marker{display:none}
  details.faq-item summary::after{
    content:"+";position:absolute;right:0;top:14px;
    font-family:var(--mono);font-size:22px;line-height:1;color:var(--brand);
    transition:transform .25s ease;
  }
  details.faq-item[open] summary::after{transform:rotate(45deg)}
  .faq-answer{padding:0 0 20px;color:var(--muted);font-size:15px;animation:fadeIn .25s ease}
  @keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  /* ---------- cta ---------- */
  .cta-band{
    position:relative;overflow:hidden;text-align:center;
    border:1px solid var(--line);border-radius:24px;background:var(--bg-1);
    padding:48px 24px;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:radial-gradient(circle at 50% 0%,rgba(23,226,168,.20),transparent 62%),
               radial-gradient(circle at 12% 100%,rgba(47,123,255,.16),transparent 58%);
  }
  .cta-inner{position:relative;z-index:2;max-width:640px;margin:0 auto}
  .cta-band h2{font-size:clamp(22px,3vw,30px);line-height:1.3;margin-bottom:12px}
  .cta-band p{color:var(--muted);font-size:15px;margin-bottom:26px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
  .cta-back{position:relative;z-index:2;display:inline-flex;margin-top:22px;color:var(--muted);font-size:14px}
  .cta-back:hover{color:var(--brand)}

  /* ---------- footer ---------- */
  .site-footer{
    background:#030A10;border-top:1px solid var(--line);
    padding:56px 0 26px;position:relative;
  }
  .site-footer::before{
    content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(23,226,168,.6),transparent);
  }
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}}
  .footer-brand .brand{margin-bottom:14px}
  .footer-desc{color:var(--muted);font-size:14px;max-width:420px}
  .footer-social{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
  .footer-social span{font-size:12px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
  .footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:14px}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{color:var(--muted);font-size:14px;transition:color .2s ease}
  .footer-links a:hover{color:var(--brand)}
  .footer-note{color:var(--muted-2);font-size:13px;margin-top:14px}
  .footer-bottom{
    margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:12px;color:var(--muted-2);
  }

  /* ---------- sticky bar ---------- */
  .sticky-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:70;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:12px 18px;
    background:rgba(6,16,25,.94);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-top:1px solid rgba(23,226,168,.32);
  }
  .sticky-text{font-size:13px;color:var(--muted)}
  .sticky-text strong{color:var(--text);font-weight:600}
  @media (max-width:1023px){
    body{padding-bottom:78px}
  }
  @media (min-width:1024px){
    .sticky-bar{
      left:auto;right:26px;bottom:26px;border-top:0;
      border:1px solid rgba(23,226,168,.35);border-radius:999px;
      padding:10px 12px 10px 22px;box-shadow:var(--sh-glow);
      opacity:0;transform:translateY(14px);pointer-events:none;
      transition:opacity .3s ease,transform .3s ease;
    }
    .sticky-bar.is-visible{opacity:1;transform:none;pointer-events:auto}
  }

  /* ---------- responsive nav ---------- */
  @media (max-width:1023px){
    .nav-toggle{display:inline-flex}
    .header-actions .btn-ghost{display:none}
    .nav-links{
      display:none;
      position:absolute;top:100%;left:-20px;right:-20px;
      flex-direction:column;align-items:stretch;gap:2px;
      padding:14px 20px 20px;
      background:rgba(6,16,25,.98);
      border-bottom:1px solid var(--line);
      box-shadow:var(--sh-2);
    }
    .nav-links.is-open{display:flex}
    .nav-link{padding:13px 12px;font-size:16px;border-radius:12px}
    .nav-link::after{display:none}
    .nav-link.is-active{background:rgba(23,226,168,.1);color:var(--brand)}
  }
  @media (max-width:520px){
    .brand{font-size:16px}
    .btn{padding:11px 18px;font-size:14px}
    .visual-caption{padding:18px}
    .tl-item{padding-left:56px}
    .data-cell{padding:20px 18px}
  }