/* roulang page: index */
:root{
  --bg-0:#070A12;
  --bg-1:#0C111E;
  --line:rgba(140,190,255,.12);
  --line-strong:rgba(140,190,255,.24);
  --text:#E8EFFA;
  --text-2:#8FA0BF;
  --text-3:#63718C;
  --main:#1FE3C2;
  --sub:#FF6A8A;
  --glass:rgba(255,255,255,.045);
  --glass-line:rgba(140,190,255,.12);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --container:1240px;
  --sec-lg:112px;
  --sec-md:88px;
  --sec-sm:64px;
}
*,*::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:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:1rem;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--text);text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease}
a:hover{color:var(--main)}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;line-height:1.25}
h1{font-size:clamp(2.1rem,4.6vw,3.4rem);font-weight:800;line-height:1.15}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700}
h3{font-size:1.25rem;font-weight:600}
p{margin:0}
ul,ol,li{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--main);outline-offset:3px;border-radius:6px}
.mono{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.section{padding:var(--sec-lg) 0}
.section--tight{padding:var(--sec-md) 0}
.section--alt{background:var(--bg-1)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8125rem;letter-spacing:.16em;color:var(--main);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--main);opacity:.7}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head p{margin-top:10px;color:var(--text-2);max-width:620px}
.sec-link{font-size:.875rem;color:var(--text-2);border-bottom:1px solid var(--line-strong);padding-bottom:2px;white-space:nowrap}
.sec-link:hover{color:var(--main);border-color:var(--main)}
.muted{color:var(--text-2)}
.small{font-size:.8125rem}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(7,10,18,.94);border-bottom-color:var(--line-strong)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:78px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{display:grid;grid-template-columns:repeat(3,4px);gap:3px;align-items:center}
.brand-mark i{display:block;width:4px;height:4px;border-radius:50%;background:var(--main);opacity:.55}
.brand-mark i:nth-child(2){opacity:.9}
.brand-mark i:nth-child(3){opacity:.35}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-top{font-size:.6875rem;letter-spacing:.34em;color:var(--text-3)}
.brand-full{font-size:1rem;font-weight:700;letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:34px}
.nav-link{position:relative;font-size:.9375rem;letter-spacing:.06em;color:var(--text-2);padding:6px 0}
.nav-link:hover{color:var(--text)}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--main);transition:right .25s ease}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{right:0}
.nav-link .dot{position:absolute;right:-12px;top:50%;width:4px;height:4px;border-radius:50%;background:var(--main);transform:translateY(-50%) scale(0);transition:transform .25s ease}
.nav-link.is-active .dot{transform:translateY(-50%) scale(1)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);position:relative}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1px;background:var(--text);transition:transform .22s ease,opacity .22s ease}
.nav-toggle span:first-child{top:17px}
.nav-toggle span:last-child{top:24px}
.nav-toggle.is-open span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-toggle.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.nav-drawer{
  position:fixed;top:0;left:0;right:0;z-index:70;
  background:#080C16;
  border-bottom:1px solid var(--line-strong);
  transform:translateY(-102%);
  transition:transform .22s ease;
  padding:14px 20px 26px;
}
.nav-drawer.is-open{transform:translateY(0)}
.drawer-link{display:block;padding:16px 2px;font-size:.9375rem;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--main)}
.drawer-mask{position:fixed;inset:0;z-index:65;background:rgba(3,6,12,.72);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:.9375rem;letter-spacing:.04em;border:1px solid transparent;transition:transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease}
.btn-primary{background:var(--main);color:#04140F;font-weight:700;box-shadow:0 0 0 rgba(31,227,194,0)}
.btn-primary:hover{background:#3EF0D2;color:#04140F;transform:translateY(-1px);box-shadow:0 0 22px rgba(31,227,194,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--main)}
.btn-ghost:hover{background:rgba(31,227,194,.06);border-color:var(--main);color:var(--main)}
.btn-text{background:none;color:var(--text);padding:0;min-height:auto;border:0;border-bottom:1px solid var(--line-strong);border-radius:0;padding-bottom:3px}
.btn-text:hover{color:var(--main);border-color:var(--main)}
.btn-glow{box-shadow:0 0 20px rgba(31,227,194,.28)}
.btn-block{width:100%}

/* Hero */
.hero{position:relative;padding:84px 0 0;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(100deg,rgba(7,10,18,.96) 0%,rgba(7,10,18,.82) 46%,rgba(12,17,30,.92) 100%),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.9;z-index:0}
.hero>.container{position:relative;z-index:1}
.hero-copy{padding-bottom:56px}
.hero h1{margin:20px 0 22px;max-width:14em}
.hero-sub{font-size:1.0625rem;color:var(--text-2);max-width:32em;margin-bottom:34px}
.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.hero-meta{display:flex;gap:26px;margin-top:34px;flex-wrap:wrap}
.hero-meta span{font-size:.8125rem;color:var(--text-3);display:flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--main);opacity:.8}
.hero-cover{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--glass-line);box-shadow:var(--shadow);background:var(--bg-1)}
.hero-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,18,.1) 40%,rgba(7,10,18,.88) 100%)}
.badge-live{position:absolute;z-index:2;top:16px;left:16px;display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:var(--radius-badge);background:rgba(255,106,138,.14);border:1px solid rgba(255,106,138,.5);color:var(--sub);font-size:.75rem;letter-spacing:.14em}
.badge-live i{width:6px;height:6px;border-radius:50%;background:var(--sub);display:block;animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}
.cover-bar{position:absolute;z-index:2;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px;font-size:.8125rem;color:var(--text-2)}
.cover-bar strong{color:var(--text);font-weight:600}
.countdown{border-top:1px solid var(--line);background:rgba(7,10,18,.6)}
.countdown-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:24px 0;flex-wrap:wrap}
.cd-title{display:flex;align-items:center;gap:10px;font-size:.875rem;color:var(--text-2);letter-spacing:.08em}
.cd-title i{width:7px;height:7px;border-radius:50%;background:var(--main);box-shadow:0 0 12px rgba(31,227,194,.8);display:block}
.cd-units{display:flex;align-items:stretch}
.cd-unit{position:relative;padding:0 26px;text-align:center;border-left:1px solid var(--line)}
.cd-unit:first-child{border-left:0;padding-left:0}
.cd-num{display:block;font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;color:var(--main);line-height:1.1;text-shadow:0 0 20px rgba(31,227,194,.45)}
.cd-unit-label{font-size:.75rem;color:var(--text-3);letter-spacing:.16em}
.cd-unit.is-sec .cd-num{color:var(--sub);text-shadow:0 0 20px rgba(255,106,138,.42)}

/* 看点列表 */
.point-list{margin-top:12px}
.point-item{border-bottom:1px solid var(--line)}
.point-item:first-child{border-top:1px solid var(--line)}
.point-row{display:grid;grid-template-columns:78px 1fr auto;align-items:center;gap:26px;padding:24px 6px;transition:transform .25s ease}
.point-row:hover{transform:translateX(4px)}
.point-num{font-size:1.5rem;font-weight:700;color:#2B3550;letter-spacing:.04em;transition:color .25s ease}
.point-row:hover .point-num{color:var(--main)}
.point-title{font-size:1.0625rem;font-weight:600;margin-bottom:6px}
.point-desc{font-size:.875rem;color:var(--text-2);line-height:1.75}
.badge{display:inline-block;max-width:6em;padding:4px 10px;border-radius:var(--radius-badge);background:rgba(31,227,194,.08);color:var(--main);font-size:.75rem;letter-spacing:.06em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 订阅 */
.subscribe{max-width:70%;margin:0 auto;background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-card);padding:32px 34px;box-shadow:var(--shadow)}
.subscribe h3{margin-bottom:6px}
.subscribe p{color:var(--text-2);font-size:.875rem;margin-bottom:20px}
.sub-form{display:flex;gap:12px;align-items:stretch;flex-wrap:wrap}
.sub-form input{flex:1 1 260px;min-height:48px;padding:0 16px;border-radius:var(--radius-input);background:rgba(7,10,18,.7);border:1px solid var(--line-strong);color:var(--text);transition:border-color .2s ease,box-shadow .2s ease}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--main);box-shadow:0 0 0 4px rgba(31,227,194,.16)}
.sub-form .btn{min-height:48px;flex:0 0 auto}
.form-tip{margin-top:12px;font-size:.8125rem;color:var(--text-3);min-height:1.4em}
.form-tip.is-ok{color:var(--main)}
.form-tip.is-err{color:var(--sub)}

/* 回放条带 */
.replay-wrap{position:relative}
.replay-strip{display:flex;gap:20px;overflow-x:auto;padding:8px 4px 22px;scroll-snap-type:x proximity}
.replay-strip::-webkit-scrollbar{height:6px}
.replay-strip::-webkit-scrollbar-thumb{background:rgba(140,190,255,.18);border-radius:6px}
.replay-wrap::after{content:"";position:absolute;top:0;right:0;width:88px;height:calc(100% - 22px);background:linear-gradient(90deg,rgba(7,10,18,0),rgba(7,10,18,.96));pointer-events:none}
.replay-card{flex:0 0 272px;scroll-snap-align:start;border-radius:var(--radius-card);border:1px solid var(--line);background:var(--bg-1);overflow:hidden;transition:transform .25s ease,border-color .25s ease}
.replay-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.replay-thumb{position:relative}
.replay-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
.replay-dur{position:absolute;right:10px;bottom:10px;padding:2px 8px;border-radius:var(--radius-badge);background:rgba(7,10,18,.82);font-size:.75rem;color:var(--text-2)}
.replay-body{padding:16px 18px 20px}
.replay-body h4{font-size:1rem;font-weight:600;margin-bottom:6px;line-height:1.5}
.replay-body span{font-size:.8125rem;color:var(--text-3)}
.replay-more{flex:0 0 200px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--line-strong);border-radius:var(--radius-card);color:var(--text-2);font-size:.9375rem;transition:color .25s ease,border-color .25s ease}
.replay-more:hover{color:var(--main);border-color:var(--main)}

/* 最新信息 */
.news-grid{margin-top:8px}
.news-lead{display:block;height:100%;background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-card);overflow:hidden;transition:transform .25s ease,border-color .25s ease}
.news-lead:hover{transform:translateY(-4px);border-color:var(--line-strong);color:var(--text)}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-lead-body{padding:22px 24px 26px}
.news-lead-body h3{margin:12px 0 10px;line-height:1.5}
.news-lead-body p{color:var(--text-2);font-size:.9375rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:18px;font-size:.8125rem;color:var(--text-3);flex-wrap:wrap}
.news-list{height:100%;display:flex;flex-direction:column}
.news-item{border-bottom:1px solid var(--line);padding:18px 4px 18px 16px;position:relative;flex:1 1 auto}
.news-item:first-child{border-top:1px solid var(--line)}
.news-item::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;background:var(--main);opacity:0;transition:opacity .22s ease}
.news-item:hover::before{opacity:1}
.news-item h4{font-size:1rem;font-weight:600;margin-bottom:6px;line-height:1.55;transition:color .22s ease}
.news-item:hover h4{color:var(--main)}
.news-item p{font-size:.875rem;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .news-meta{margin-top:10px}
.empty-state{min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;border:1px dashed var(--line-strong);border-radius:var(--radius-card);color:var(--text-2);font-size:.9375rem;text-align:center;padding:32px}

/* 数据横条 */
.stats{display:flex;align-items:stretch;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{flex:1 1 0;padding:34px 20px;text-align:center;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat-num{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:700;color:var(--text);line-height:1.1}
.stat-num em{font-style:normal;font-size:.875rem;color:var(--text-3);margin-left:6px}
.stat-label{margin-top:8px;font-size:.8125rem;color:var(--text-2);letter-spacing:.08em}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(255,255,255,.02);margin-bottom:14px;overflow:hidden}
.faq-item[open]{border-color:var(--line-strong);background:rgba(255,255,255,.035)}
.faq-item summary{display:flex;align-items:center;gap:16px;padding:20px 22px;cursor:pointer;list-style:none;font-size:1.0625rem;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-q{color:var(--main);font-size:.875rem;letter-spacing:.08em;flex:0 0 auto}
.faq-sign{margin-left:auto;color:var(--text-2);font-size:1.125rem;line-height:1;transition:transform .2s ease}
.faq-item[open] .faq-sign{color:var(--main)}
.faq-answer{padding:0 22px 22px 60px;color:var(--text-2);font-size:.9375rem;border-left:2px solid transparent}
.faq-item[open] .faq-answer{border-left-color:var(--main)}

/* CTA 带 */
.cta-band{position:relative;text-align:center;padding:72px 24px;border-radius:var(--radius-card);border:1px solid var(--glass-line);background:radial-gradient(60% 120% at 50% 0%,rgba(31,227,194,.14),rgba(7,10,18,0) 70%),var(--bg-1);overflow:hidden}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--text-2);max-width:34em;margin:0 auto 26px}

/* 页脚 */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:72px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1.4fr;gap:40px}
.footer-brand .brand-full{font-size:1.0625rem}
.footer-desc{color:var(--text-2);font-size:.875rem;margin-top:14px;max-width:26em}
.footer-col h4{font-size:.8125rem;letter-spacing:.18em;color:var(--text-3);font-weight:600;margin-bottom:18px}
.footer-col a{display:block;color:var(--text-2);font-size:.9375rem;padding:9px 0;border-bottom:1px solid var(--line)}
.footer-col a:hover{color:var(--main)}
.footer-form h4{font-size:.8125rem;letter-spacing:.18em;color:var(--text-3);font-weight:600;margin-bottom:18px}
.footer-form .sub-form input{min-height:46px}
.footer-form .btn{min-height:46px}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8125rem;color:var(--text-3)}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--main)}

/* 响应式 */
@media (max-width:1024px){
  .container{padding:0 28px}
  .section{padding:80px 0}
  .section--tight{padding:64px 0}
  .main-nav{gap:22px}
  .nav-link{font-size:.875rem}
  .footer-grid{grid-template-columns:1.4fr .8fr .8fr;gap:32px}
  .footer-form{grid-column:1 / -1}
  .subscribe{max-width:100%}
}
@media (max-width:900px){
  .main-nav{display:none}
  .nav-toggle{display:block}
  .nav-right .btn-primary{display:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .hero{padding-top:56px}
  .hero-copy{padding-bottom:36px}
  .hero h1{max-width:100%}
  .cd-unit{padding:0 16px}
  .point-row{grid-template-columns:56px 1fr;gap:16px;align-items:flex-start}
  .point-row .badge{grid-column:2;justify-self:start;margin-top:10px}
  .point-num{font-size:1.25rem}
  .stats{flex-wrap:wrap}
  .stat{flex:1 1 50%;border-top:1px solid var(--line)}
  .stat:nth-child(1),.stat:nth-child(2){border-top:0}
  .stat:nth-child(3){border-left:0}
  .faq-answer{padding-left:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .footer-form{grid-column:1 / -1}
}
@media (max-width:520px){
  h1{font-size:2rem}
  .brand-full{font-size:.9375rem}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .stat{flex:1 1 100%;border-left:0}
  .stat:nth-child(2){border-top:1px solid var(--line)}
  .cd-unit{padding:0 12px}
  .cd-num{font-size:1.5rem}
  .replay-card{flex:0 0 230px}
  .footer-grid{grid-template-columns:1fr}
  .subscribe{padding:24px 20px}
}

/* roulang page: article */
:root{
  --bg-0:#070A12;
  --bg-1:#0C111E;
  --text:#E8EFFA;
  --text-2:#D6E1F2;
  --muted:#8FA0BF;
  --muted-2:#6B7B99;
  --primary:#1FE3C2;
  --accent:#FF6A8A;
  --line:rgba(140,190,255,.12);
  --line-strong:rgba(140,190,255,.24);
  --glass:rgba(255,255,255,.045);
  --r-card:18px;
  --r-img:14px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --container:1240px;
  --pad:40px;
}
*,*::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:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.9;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none;background:transparent}
a:hover,a:focus{color:var(--primary)}
button,input{font:inherit;color:inherit;margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{letter-spacing:-.01em;font-weight:700;line-height:1.3}
time,.num{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
::selection{background:rgba(31,227,194,.25)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:rgba(7,10,18,.95);border-bottom-color:var(--line-strong)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{display:inline-flex;gap:3px;align-items:center}
.brand-mark i{width:4px;height:4px;border-radius:50%;background:var(--primary);display:block}
.brand-mark i:nth-child(2){opacity:.55}
.brand-mark i:nth-child(3){opacity:.3}
.brand-text{display:flex;flex-direction:column;line-height:1.22}
.brand-top{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:10.5px;letter-spacing:.32em;color:var(--primary)}
.brand-full{font-size:15px;font-weight:600;color:var(--text)}
.main-nav{display:flex;align-items:center;justify-content:center;gap:30px;flex:1 1 auto}
.nav-link{position:relative;display:inline-block;padding:6px 2px;font-size:14px;letter-spacing:.08em;color:var(--muted);transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link .dot{position:absolute;right:-11px;top:50%;width:4px;height:4px;margin-top:-2px;border-radius:50%;background:var(--primary);opacity:0;transition:opacity .2s ease}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(.4)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active .dot{opacity:1}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .2s ease;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--text);transition:transform .22s ease}
.nav-toggle:hover{border-color:var(--primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;letter-spacing:.06em;cursor:pointer;background:none;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--primary);color:#04140F;font-weight:600}
.btn-primary:hover{color:#04140F;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 12px 34px -14px rgba(31,227,194,.75)}
.btn-primary:active{transform:translateY(1px)}
.btn-glow{box-shadow:0 0 22px -8px rgba(31,227,194,.7)}
.btn-ghost{border-color:var(--line-strong);color:var(--primary);background:transparent}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,227,194,.06);color:var(--primary)}
.btn-outline{border-color:var(--line-strong);color:var(--text);background:transparent}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn:focus-visible,a:focus-visible,input:focus-visible,button:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.text-link{font-size:14px;color:var(--primary);border-bottom:1px solid rgba(31,227,194,.4);padding-bottom:2px;transition:border-color .2s ease}
.text-link:hover{border-color:var(--primary)}

/* ---------- badge ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:rgba(31,227,194,.08);color:var(--primary);font-size:12px;letter-spacing:.06em;max-width:6.5em;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.badge-live{background:rgba(255,106,138,.12);color:var(--accent)}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  padding:34px 0 0;font-size:13px;color:var(--muted-2);letter-spacing:.04em;
}
.breadcrumb a{color:var(--muted-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(140,190,255,.28)}
.breadcrumb .current{color:var(--text);opacity:.85;max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:26px 0 0}
.article-head h1{
  margin:18px 0 0;font-size:clamp(1.9rem,3.4vw,2.6rem);line-height:1.26;font-weight:700;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin:24px 0 0;padding:14px 0;font-size:13px;color:var(--muted-2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.article-meta .sep{width:1px;height:14px;background:var(--line-strong);display:inline-block}
.article-meta time{color:var(--muted)}

/* ---------- cover ---------- */
.article-cover{margin:34px 0 0}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
.article-cover figcaption{margin-top:12px;text-align:center;font-size:.8125rem;color:var(--muted-2)}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,820px) 268px;gap:60px;
  justify-content:center;margin:44px 0 0;
}
.article-main{min-width:0}

/* ---------- body typography ---------- */
.article-body{font-size:1rem;line-height:1.9;color:var(--text-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:2.2em 0 .8em;padding-left:14px;
  font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:700;color:var(--text);line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 14px rgba(31,227,194,.75);
}
.article-body h3{margin:1.8em 0 .55em;font-size:1.1rem;font-weight:600;color:var(--text)}
.article-body h4{margin:1.5em 0 .5em;font-size:1rem;font-weight:600;color:var(--muted)}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(31,227,194,.4)}
.article-body a:hover{border-color:var(--primary)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0}
.article-body li::marker{color:rgba(31,227,194,.7)}
.article-body strong{color:var(--text);font-weight:600}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--primary);
  background:rgba(31,227,194,.05);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.7em auto;max-width:100%;height:auto}
.article-body figure{margin:1.7em 0}
.article-body figcaption{margin:10px 0 0;text-align:center;font-size:.8125rem;color:var(--muted-2)}
.article-body table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:.9375rem}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border:0;background:none}
.article-body thead th{border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);color:var(--text);font-weight:600}
.article-body tbody td{color:var(--muted)}
.article-body tbody tr:last-child td{border-bottom:1px solid var(--line-strong)}
.article-body pre{
  margin:1.7em 0;padding:18px 20px;overflow-x:auto;background:#05070E;border:1px solid var(--line);
  border-radius:var(--r-img);font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.875rem;line-height:1.75;color:#B9F5E9;
}
.article-body code{
  font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.9em;color:var(--primary);
  background:rgba(255,255,255,.06);padding:2px 6px;border-radius:4px;
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* ---------- empty state ---------- */
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  padding:48px 24px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--glass);
}
.empty-state p{color:var(--muted);font-size:.9375rem;margin:0}

/* ---------- notice ---------- */
.notice-box{margin:52px 0 0;padding:24px 26px;border:1px solid var(--line);border-radius:var(--r-img);background:rgba(255,255,255,.025)}
.notice-box h2{margin:0 0 10px;font-size:.9375rem;font-weight:600;color:var(--text);letter-spacing:.06em}
.notice-box p{margin:0;font-size:.875rem;line-height:1.85;color:var(--muted)}

/* ---------- related ---------- */
.related{
  display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:44px;
  margin:64px 0 0;padding-top:40px;border-top:1px solid var(--line);
}
.related h2{margin:0 0 18px;font-size:1.05rem;font-weight:600;color:var(--text)}
.related-list ul li{display:flex;align-items:baseline;gap:16px;padding:14px 0;border-bottom:1px solid rgba(140,190,255,.08)}
.related-list ul li a{font-size:.9375rem;color:var(--text-2);transition:color .2s ease}
.related-list ul li a:hover{color:var(--primary)}
.related-list ul li time{margin-left:auto;font-size:.8125rem;color:var(--muted-2);flex:0 0 auto}
.related-return{border-left:1px solid var(--line);padding-left:32px;display:flex;flex-direction:column;gap:16px;align-items:flex-start}

/* ---------- sidebar ---------- */
.article-side{position:relative}
.side-inner{position:sticky;top:104px;display:flex;flex-direction:column;gap:34px}
.side-block h3{margin:0 0 14px;font-size:.8125rem;font-weight:600;letter-spacing:.14em;color:var(--muted-2)}
.side-block ul li{padding:10px 0;border-bottom:1px solid rgba(140,190,255,.08)}
.side-block ul li a{display:block;font-size:.875rem;color:var(--muted);transition:color .2s ease,padding-left .2s ease}
.side-block ul li a:hover{color:var(--primary);padding-left:4px}
.side-rank{counter-reset:rank}
.side-rank li{display:flex;gap:12px;align-items:baseline;padding:11px 0;border-bottom:1px solid rgba(140,190,255,.08)}
.side-rank li::before{
  counter-increment:rank;content:counter(rank,decimal-leading-zero);
  font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.75rem;color:rgba(31,227,194,.6);
}
.side-rank li a{font-size:.875rem;color:var(--muted);line-height:1.6}
.side-rank li a:hover{color:var(--primary)}

/* ---------- cta ---------- */
.cta-wrap{padding:96px 0 0}
.cta-band{
  position:relative;text-align:center;padding:60px 40px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-1);overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:340px;
  background:radial-gradient(ellipse at 50% 0%,rgba(31,227,194,.14),transparent 62%);
  pointer-events:none;
}
.cta-band h2{position:relative;font-size:clamp(1.3rem,2.2vw,1.7rem);color:var(--text)}
.cta-band p{position:relative;margin:14px auto 26px;max-width:52ch;font-size:.9375rem;color:var(--muted)}
.cta-band .btn{position:relative}

/* ---------- footer ---------- */
.site-footer{margin-top:110px;background:var(--bg-1);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:48px;padding:70px 0 46px}
.footer-brand .brand{margin-bottom:18px}
.footer-desc{font-size:.875rem;line-height:1.85;color:var(--muted-2);max-width:34ch}
.footer-col h4{margin:0 0 14px;font-size:.8125rem;font-weight:600;letter-spacing:.14em;color:var(--muted-2)}
.footer-col a{display:block;padding:8px 0;font-size:.875rem;color:var(--muted);border-bottom:1px solid rgba(140,190,255,.07);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-form h4{margin:0 0 14px;font-size:.8125rem;font-weight:600;letter-spacing:.14em;color:var(--muted-2)}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 170px;min-width:0;height:44px;padding:0 14px;border-radius:var(--r-btn);
  background:#080C16;border:1px solid var(--line-strong);color:var(--text);font-size:.875rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:var(--muted-2)}
.sub-form input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(31,227,194,.14);outline:none}
.form-tip{margin:12px 0 0;font-size:.8125rem;color:var(--muted-2)}
.form-tip.is-error{color:var(--accent)}
.form-tip.is-ok{color:var(--primary)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:.8125rem;color:var(--muted-2);
}

/* ---------- responsive ---------- */
@media (max-width:1240px){
  :root{--pad:28px}
  .article-layout{gap:44px;grid-template-columns:minmax(0,1fr) 240px}
}
@media (max-width:1024px){
  :root{--pad:28px}
  .main-nav{
    position:fixed;top:76px;left:0;right:0;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;margin:0;padding:6px 20px 20px;background:rgba(7,10,18,.98);
    border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    opacity:0;visibility:hidden;transform:translateY(-12px);pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
  .nav-link{padding:16px 6px;border-bottom:1px solid var(--line);font-size:15px}
  .nav-link::after{display:none}
  .nav-link .dot{display:none}
  .nav-link.is-active{color:var(--primary);padding-left:14px;border-radius:6px;background:rgba(31,227,194,.07)}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-side{margin-top:56px;padding-top:34px;border-top:1px solid var(--line)}
  .side-inner{position:static;flex-direction:row;gap:40px;flex-wrap:wrap}
  .side-block{flex:1 1 240px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:38px;padding:56px 0 36px}
}
@media (max-width:768px){
  .nav-wrap{min-height:66px}
  .main-nav{top:66px}
  .brand-full{font-size:14px}
  .breadcrumb{padding-top:26px}
  .article-layout{margin-top:32px}
  .related{grid-template-columns:1fr;gap:28px;margin-top:52px}
  .related-return{border-left:0;border-top:1px solid var(--line);padding:24px 0 0;flex-direction:row;align-items:center;flex-wrap:wrap}
  .cta-wrap{padding-top:72px}
  .cta-band{padding:44px 24px}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  :root{--pad:20px}
  .brand-top{font-size:10px;letter-spacing:.26em}
  .brand-full{font-size:13px;max-width:9em}
  .nav-right .btn{height:40px;padding:0 14px;font-size:13px}
  .article-head h1{font-size:1.6rem}
  .article-meta{gap:10px;font-size:12px}
  .article-meta .sep{display:none}
  .article-body h2{font-size:1.25rem}
  .side-inner{flex-direction:column;gap:30px}
  .sub-form{flex-direction:column}
  .sub-form input,.sub-form .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#070A12;
  --bg-1:#0C111E;
  --surface:rgba(255,255,255,0.045);
  --surface-strong:rgba(255,255,255,0.07);
  --line:rgba(140,190,255,0.12);
  --line-strong:rgba(140,190,255,0.24);
  --text:#E8EFFA;
  --text-2:#8FA0BF;
  --text-3:#5D6C88;
  --primary:#1FE3C2;
  --primary-dim:rgba(31,227,194,0.08);
  --primary-dim-2:rgba(31,227,194,0.16);
  --accent:#FF6A8A;
  --accent-dim:rgba(255,106,138,0.12);
  --ink:#04120F;
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --shadow-soft:0 12px 36px -18px rgba(0,0,0,.65);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sec-y:110px;
}

/* ============ 基础重置 ============ */
*,*::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:1rem;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease}
a:hover,a:focus{color:var(--primary)}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  border-radius:4px;
}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
::selection{background:rgba(31,227,194,.28);color:#fff}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:40px;
  padding-right:40px;
}
.section{padding:var(--sec-y) 0;position:relative}
.section--tight{padding:66px 0}
.section--alt{background:var(--bg-1)}
.section-head{margin-bottom:48px;max-width:760px}
.section-head--split{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}
.section-title{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  line-height:1.3;
  font-weight:600;
  letter-spacing:-0.01em;
  color:var(--text);
}
.section-desc{color:var(--text-2);font-size:.9375rem;margin-top:14px;max-width:660px}
.eyebrow{
  display:inline-block;
  font-size:.8125rem;
  letter-spacing:.16em;
  color:var(--primary);
  margin-bottom:18px;
  text-transform:none;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,10,18,.86);
  border-top:1px solid transparent;
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,10,18,.96);
  border-bottom-color:var(--line-strong);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand:hover{color:var(--text)}
.brand-mark{display:inline-flex;align-items:center;gap:3px}
.brand-mark i{display:block;width:4px;height:4px;border-radius:50%;background:var(--primary)}
.brand-mark i:nth-child(1){opacity:.95}
.brand-mark i:nth-child(2){opacity:.55}
.brand-mark i:nth-child(3){opacity:.28}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-top{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.28em;
  color:var(--primary);
}
.brand-full{font-size:.9375rem;font-weight:500;letter-spacing:.02em;color:var(--text)}
.main-nav{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;
  font-size:.875rem;
  letter-spacing:.08em;
  color:var(--text-2);
  padding:6px 0;
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.nav-link:hover{color:var(--text)}
.nav-link .dot{
  width:4px;height:4px;border-radius:50%;
  background:var(--primary);
  opacity:0;
  transition:opacity .22s ease;
}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active .dot{opacity:1}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  height:2px;
  width:0;
  background:var(--primary);
  transition:width .24s ease;
}
.nav-link.is-active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink: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-btn);
  font-size:.875rem;
  letter-spacing:.06em;
  white-space:nowrap;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{
  background:var(--primary);
  color:var(--ink);
  font-weight:600;
  box-shadow:0 0 0 rgba(31,227,194,0);
}
.btn-primary:hover{
  background:#39ecca;
  color:var(--ink);
  transform:translateY(-1px);
  box-shadow:0 10px 30px -10px rgba(31,227,194,.55),0 0 26px rgba(31,227,194,.28);
}
.btn-primary:active{transform:translateY(1px)}
.btn-glow{box-shadow:0 0 22px rgba(31,227,194,.22)}
.btn-ghost{
  background:transparent;
  color:var(--primary);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{
  color:var(--primary);
  border-color:var(--primary);
  background:var(--primary-dim);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{
  background:transparent;
  color:var(--text-2);
  border:1px solid transparent;
  padding:0 4px;
}
.btn-text:hover{color:var(--primary)}
.link-underline{
  color:var(--text-2);
  border-bottom:1px solid var(--line-strong);
  padding-bottom:2px;
  font-size:.875rem;
}
.link-underline:hover{color:var(--primary);border-bottom-color:var(--primary)}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:1px;background:var(--text);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span:nth-child(1){top:17px}
.nav-toggle span:nth-child(2){top:26px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4.5px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;
  background:rgba(4,7,13,.72);
  opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
  z-index:55;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:96px 0 80px}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,10,18,.72) 0%,rgba(7,10,18,.9) 55%,var(--bg-0) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.55;
  z-index:0;
}
.hero .container{position:relative;z-index:1}
.hero-grid{align-items:center}
.hero-copy{padding-right:16px}
.hero h1{
  font-size:clamp(2.1rem,4.6vw,3.4rem);
  line-height:1.15;
  font-weight:600;
  letter-spacing:-0.01em;
  margin-bottom:22px;
  max-width:16em;
}
.hero-sub{
  color:var(--text-2);
  font-size:1rem;
  max-width:34em;
  margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-bottom:38px}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  border-top:1px solid var(--line);
  padding-top:22px;
}
.hero-points li{
  position:relative;
  padding-left:16px;
  color:var(--text-2);
  font-size:.875rem;
}
.hero-points li::before{
  content:"";
  position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  opacity:.7;
}
.hero-card{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
.hero-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--radius-card) var(--radius-card) 0 0;
}
.hero-card figcaption{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:.8125rem;
  color:var(--text-2);
  border-top:1px solid var(--line);
}
.hero-card figcaption strong{
  font-family:var(--font-mono);
  color:var(--primary);
  font-weight:500;
  letter-spacing:.04em;
}
.live-badge{
  position:absolute;
  top:16px;left:16px;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;
  border-radius:var(--radius-badge);
  background:var(--accent-dim);
  border:1px solid rgba(255,106,138,.35);
  color:var(--accent);
  font-size:.75rem;
  letter-spacing:.1em;
}
.live-badge::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 10px rgba(255,106,138,.8);
}

/* ============ 数据条 ============ */
.stat-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.stat-strip-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat-item{
  padding:30px 26px;
  border-left:1px solid var(--line);
}
.stat-item:first-child{border-left:0}
.stat-num{
  font-family:var(--font-mono);
  font-size:1.75rem;
  line-height:1.2;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.stat-num small{font-size:.875rem;color:var(--text-2);margin-left:6px;font-family:var(--font-sans)}
.stat-label{font-size:.8125rem;color:var(--text-2);margin-top:6px}

/* ============ 左图右文条目流 ============ */
.entry-list{border-top:1px solid var(--line)}
.entry-row{
  display:grid;
  grid-template-columns:minmax(0,340px) minmax(0,1fr);
  gap:38px;
  align-items:center;
  padding:38px 0;
  border-bottom:1px solid var(--line);
  transition:transform .24s ease;
}
.entry-row:hover{transform:translateX(4px)}
.entry-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
}
.entry-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  transition:transform .4s ease;
}
.entry-row:hover .entry-media img{transform:scale(1.03)}
.entry-body h3{
  font-size:1.25rem;
  line-height:1.5;
  font-weight:600;
  margin:14px 0 12px;
}
.entry-body p{color:var(--text-2);font-size:.9375rem;max-width:52em;margin-bottom:16px}
.badge{
  display:inline-block;
  max-width:8em;
  padding:3px 10px;
  border-radius:var(--radius-badge);
  background:var(--primary-dim);
  color:var(--primary);
  font-size:.75rem;
  letter-spacing:.06em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.entry-order{
  font-family:var(--font-mono);
  font-size:.8125rem;
  color:var(--text-3);
  letter-spacing:.1em;
  margin-right:12px;
}

/* ============ 视觉缓冲带 ============ */
.buffer-band{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:54px 0;
}
.buffer-band h2{
  font-size:clamp(1.3rem,2.2vw,1.75rem);
  font-weight:600;
  line-height:1.4;
  letter-spacing:-0.01em;
  max-width:24em;
}
.buffer-band p{color:var(--text-2);font-size:.9375rem;margin-top:14px;max-width:44em}
.buffer-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:38px;
  border-top:1px solid var(--line);
}
.buffer-cell{
  padding:26px 26px 0 0;
  border-right:1px solid var(--line);
}
.buffer-cell:last-child{border-right:0}
.buffer-cell strong{
  display:block;
  font-family:var(--font-mono);
  font-size:1.5rem;
  color:var(--primary);
  font-weight:500;
  margin-bottom:6px;
}
.buffer-cell span{font-size:.8125rem;color:var(--text-2)}

/* ============ 步骤流程 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.flow-step{
  padding:34px 26px 34px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.flow-step:last-child{border-right:0}
.flow-step .step-index{
  font-family:var(--font-mono);
  font-size:.8125rem;
  letter-spacing:.18em;
  color:var(--text-3);
  display:block;
  margin-bottom:16px;
}
.flow-step h3{font-size:1.0625rem;font-weight:600;margin-bottom:10px}
.flow-step p{font-size:.875rem;color:var(--text-2)}
.flow-step::after{
  content:"";
  position:absolute;
  left:0;top:0;
  width:0;height:2px;
  background:var(--primary);
  transition:width .3s ease;
}
.flow-step:hover::after{width:100%}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:18px;
  padding:24px 8px 24px 0;
  text-align:left;
  font-size:1.0625rem;
  font-weight:500;
  color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q .q-index{
  font-family:var(--font-mono);
  font-size:.8125rem;
  color:var(--text-3);
  flex-shrink:0;
}
.faq-q .q-text{flex:1}
.faq-q .q-mark{
  font-family:var(--font-mono);
  font-size:1.125rem;
  color:var(--text-2);
  flex-shrink:0;
  width:20px;
  text-align:center;
}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a-inner{
  margin:0 0 26px 40px;
  padding:2px 0 2px 18px;
  border-left:2px solid var(--primary);
  background:rgba(255,255,255,.02);
  border-radius:0 var(--radius-badge) var(--radius-badge) 0;
  padding:14px 18px;
  color:var(--text-2);
  font-size:.9375rem;
  max-width:56em;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  text-align:center;
  padding:96px 0;
  overflow:hidden;
  background:var(--bg-1);
}
.cta-band::before{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:720px;height:720px;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(31,227,194,.14) 0%,rgba(31,227,194,0) 66%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:1;max-width:620px;margin:0 auto}
.cta-inner h2{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  font-weight:600;
  line-height:1.35;
  letter-spacing:-0.01em;
  margin-bottom:16px;
}
.cta-inner p{color:var(--text-2);font-size:.9375rem;margin-bottom:32px}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:78px 0 0;
  color:var(--text-2);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:20px}
.footer-desc{font-size:.875rem;line-height:1.9;max-width:30em;color:var(--text-2)}
.footer-col h4,
.footer-form h4{
  font-size:.8125rem;
  letter-spacing:.16em;
  color:var(--text-3);
  font-weight:500;
  margin-bottom:20px;
}
.footer-col a{
  display:block;
  font-size:.875rem;
  color:var(--text-2);
  padding:9px 0;
  border-bottom:1px solid rgba(140,190,255,.07);
}
.footer-col a:hover{color:var(--primary);border-bottom-color:var(--line-strong)}
.sub-form{display:flex;gap:10px;align-items:stretch;margin-bottom:12px}
.sub-form input{
  flex:1;
  min-width:0;
  height:46px;
  padding:0 14px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--text);
  font-size:.875rem;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(31,227,194,.04);
  box-shadow:0 0 0 4px rgba(31,227,194,.14);
}
.sub-form .btn{height:46px;padding:0 18px}
.form-tip{font-size:.8125rem;color:var(--text-3)}
.form-tip.is-error{color:var(--accent)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  font-size:.8125rem;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sec-y:78px}
  .container{padding-left:28px;padding-right:28px}
  .main-nav{
    position:fixed;
    top:76px;
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#0A0F1B;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:8px 28px 20px;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s ease;
    max-height:calc(100vh - 76px);
    overflow-y:auto;
    z-index:58;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none}
  .nav-link{
    padding:18px 0;
    border-bottom:1px solid var(--line);
    font-size:.9375rem;
    letter-spacing:.06em;
    justify-content:space-between;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{
    color:var(--primary);
    background:var(--primary-dim);
    padding-left:14px;
    padding-right:14px;
    border-radius:var(--radius-badge);
    border-bottom-color:transparent;
  }
  .nav-toggle{display:block}
  .entry-row{grid-template-columns:minmax(0,280px) minmax(0,1fr);gap:26px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-step:nth-child(2){border-right:0}
  .flow-step:nth-child(1),
  .flow-step:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  :root{--sec-y:64px}
  .container{padding-left:20px;padding-right:20px}
  .nav-wrap{gap:16px;min-height:68px}
  .main-nav{top:68px;padding:8px 20px 18px}
  .nav-right .btn{padding:0 16px;font-size:.8125rem}
  .hero{padding:64px 0 56px}
  .hero-copy{padding-right:0;margin-bottom:44px}
  .hero-card{margin-top:8px}
  .stat-strip-inner{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-left:0;border-top:1px solid var(--line);padding:22px 0}
  .stat-item:nth-child(1),
  .stat-item:nth-child(2){border-top:0}
  .stat-item:nth-child(even){border-left:1px solid var(--line);padding-left:20px}
  .entry-row{
    grid-template-columns:1fr;
    gap:20px;
    padding:30px 0;
  }
  .entry-row:hover{transform:none}
  .buffer-grid{grid-template-columns:1fr}
  .buffer-cell{border-right:0;border-bottom:1px solid var(--line);padding:22px 0}
  .buffer-cell:last-child{border-bottom:0}
  .flow{grid-template-columns:1fr}
  .flow-step{border-right:0;border-bottom:1px solid var(--line);padding:26px 0}
  .flow-step:last-child{border-bottom:0}
  .faq-a-inner{margin-left:0}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:40px}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .hero h1{font-size:1.95rem}
  .section-head--split{flex-direction:column;align-items:flex-start;gap:12px}
  .nav-right .btn{display:none}
  .brand-full{font-size:.875rem}
  .stat-num{font-size:1.5rem}
}

/* roulang page: category2 */
:root{
  --bg-0:#070A12;
  --bg-1:#0C111E;
  --text:#E8EFFA;
  --text-2:#8FA0BF;
  --text-3:#66768F;
  --primary:#1FE3C2;
  --primary-deep:#0FB89C;
  --accent:#FF6A8A;
  --line:rgba(140,190,255,0.12);
  --line-soft:rgba(140,190,255,0.07);
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.07);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow:0 24px 60px -20px rgba(0,0,0,0.7);
  --container:1240px;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,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:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{letter-spacing:-0.01em;line-height:1.3;font-weight:700}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(7,10,18,0.74);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(6,9,16,0.94);border-bottom-color:rgba(140,190,255,0.2)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:28px;height:78px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{display:inline-flex;flex-direction:column;gap:3px}
.brand-mark i{display:block;width:14px;height:2px;border-radius:1px;background:var(--primary);opacity:.85}
.brand-mark i:nth-child(2){width:9px;opacity:.6}
.brand-mark i:nth-child(3){width:5px;opacity:.4}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-top{font-family:var(--mono);font-size:10px;letter-spacing:.42em;color:var(--text-3)}
.brand-full{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.main-nav{display:flex;align-items:center;gap:34px}
.nav-link{
  position:relative;
  font-size:15px;letter-spacing:.06em;color:var(--text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;bottom:-4px;width:100%;height:2px;background:var(--primary);border-radius:2px;
}
.nav-link .dot{
  position:absolute;right:-11px;top:50%;width:4px;height:4px;border-radius:50%;
  background:var(--primary);opacity:0;transform:translateY(-50%);transition:opacity .2s ease;
}
.nav-link.is-active .dot{opacity:1}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  position:relative;background:rgba(255,255,255,0.02);
}
.nav-toggle span{
  position:absolute;left:11px;width:20px;height:1.5px;background:var(--text);border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span:first-child{top:16px}
.nav-toggle span:last-child{top:24px}
.nav-toggle.is-open span:first-child{transform:translateY(4px) rotate(45deg)}
.nav-toggle.is-open span:last-child{transform:translateY(-4px) rotate(-45deg)}
.nav-mask{
  position:fixed;inset:0;background:rgba(4,7,14,0.72);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:60;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.04em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:0 0 26px -8px rgba(31,227,194,.6)}
.btn-primary:hover{background:#3CEFCF;color:#04140F;transform:translateY(-1px);box-shadow:0 0 38px -6px rgba(31,227,194,.78)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--primary)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,227,194,.07);color:var(--primary)}
.btn-text{
  padding:0 4px;height:46px;color:var(--text-2);border:0;background:none;
  border-bottom:1px solid rgba(140,190,255,0.25);border-radius:0;
}
.btn-text:hover{color:var(--primary);border-bottom-color:var(--primary)}
.btn-block{width:100%}
.btn-glow{position:relative}
.btn-glow::after{
  content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:34px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text-2)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 88px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.26;filter:saturate(.7) contrast(1.05);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,10,18,.72) 0%,rgba(7,10,18,.9) 62%,var(--bg-0) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.28em;color:var(--primary);
  text-transform:uppercase;margin-bottom:22px;
}
.hero-eyebrow::before{content:"";width:26px;height:1px;background:var(--primary);opacity:.7}
.hero h1{
  font-size:clamp(2.1rem,4.6vw,3.4rem);
  line-height:1.15;font-weight:800;
  max-width:16em;margin-bottom:22px;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:32em;margin-bottom:34px;line-height:1.85}
.hero-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:44px}
.hero-facts{display:flex;gap:38px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:24px}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts strong{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--text);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-facts span{font-size:12.5px;color:var(--text-3);letter-spacing:.04em}
.hero-media{
  position:relative;margin:0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-1);box-shadow:var(--shadow);
}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px 14px;
  font-size:13px;color:var(--text-2);
  background:linear-gradient(to top,rgba(5,8,15,.94) 12%,rgba(5,8,15,0));
}
.live-badge{
  position:absolute;top:14px;left:14px;z-index:3;
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);
  background:rgba(255,106,138,.14);border:1px solid rgba(255,106,138,.42);
  color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.2em;
}
.live-badge::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:44em;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:16px;font-weight:700}
.section-head p{color:var(--text-2);font-size:16px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:15px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(31,227,194,.55) 0%,rgba(140,190,255,.16) 55%,rgba(140,190,255,.04) 100%);
}
.tl-item{position:relative;padding:0 0 48px 58px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:9px;top:9px;width:13px;height:13px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--primary);
  box-shadow:0 0 0 5px rgba(31,227,194,.08);z-index:2;
}
.tl-item.is-now .tl-dot{border-color:var(--accent);box-shadow:0 0 0 5px rgba(255,106,138,.1)}
.tl-body{
  padding:22px 26px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .22s ease,transform .22s ease,background .22s ease;
}
.tl-item:hover .tl-body{border-color:rgba(31,227,194,.32);transform:translateX(4px);background:var(--glass-strong)}
.tl-body h3{font-size:1.25rem;margin-bottom:10px;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.tl-num{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--text-3);
  font-weight:500;font-variant-numeric:tabular-nums;
}
.tl-body p{color:var(--text-2);font-size:15px;line-height:1.85;margin-bottom:16px}
.tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--radius-badge);font-size:12.5px;letter-spacing:.04em;
  background:rgba(31,227,194,.08);color:var(--primary);border:1px solid rgba(31,227,194,.18);
  max-width:8em;overflow:hidden;white-space:nowrap;
}
.badge--accent{background:rgba(255,106,138,.08);color:var(--accent);border-color:rgba(255,106,138,.22)}
.tl-time{font-family:var(--mono);font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- 数字缓冲带 ---------- */
.stat-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);padding:44px 0}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 28px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat-line{display:flex;align-items:baseline;gap:6px}
.stat-num{font-family:var(--mono);font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-unit{font-size:13px;color:var(--text-3)}
.stat p{font-size:13px;color:var(--text-3);margin-top:6px;letter-spacing:.03em}

/* ---------- 提醒设置 ---------- */
.alert-grid{align-items:center}
.fig-card{
  position:relative;margin:0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-0);box-shadow:var(--shadow);
}
.fig-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.fig-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  font-size:13px;color:var(--text-2);
  background:linear-gradient(to top,rgba(5,8,15,.92),rgba(5,8,15,0));
}
.alert-copy h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:18px}
.alert-copy > p{color:var(--text-2);font-size:16px;margin-bottom:26px}
.check-list{margin-bottom:32px}
.check-list li{
  position:relative;padding:12px 0 12px 26px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.check-list li:last-child{border-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:22px;width:8px;height:8px;border-radius:2px;
  background:var(--primary);opacity:.75;
}
.alert-form{
  padding:28px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);
}
@supports not ((backdrop-filter:blur(18px)) or (-webkit-backdrop-filter:blur(18px))){
  .alert-form{background:#0E1524}
  .tl-body{background:#0E1524}
}
.field{margin-bottom:20px}
.field-label{display:block;font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:10px}
.chip-group{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 18px;
  border-radius:var(--radius-btn);border:1px solid var(--line);
  background:rgba(255,255,255,0.02);color:var(--text-2);font-size:14px;
  cursor:pointer;transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.chip input{position:absolute;opacity:0;width:0;height:0}
.chip:hover{border-color:rgba(31,227,194,.4);color:var(--text)}
.chip:has(input:checked){border-color:var(--primary);color:var(--primary);background:rgba(31,227,194,.08)}
.alert-form input[type="text"]{
  width:100%;height:46px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(4,8,16,.72);border:1px solid var(--line);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.alert-form input[type="text"]::placeholder{color:var(--text-3)}
.alert-form input[type="text"]:focus{
  outline:none;border-color:var(--primary);background:rgba(4,8,16,.92);
  box-shadow:0 0 0 4px rgba(31,227,194,.12);
}
.form-tip{font-size:13px;color:var(--text-3);margin-top:14px;line-height:1.7}
.form-tip.is-error{color:var(--accent)}
.form-tip.is-ok{color:var(--primary)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:22px 4px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:var(--radius-badge);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;color:var(--primary);
  background:rgba(31,227,194,.08);border:1px solid rgba(31,227,194,.18);
}
.faq-q .faq-text{flex:1}
.faq-icon{
  flex:0 0 auto;font-family:var(--mono);font-size:18px;color:var(--text-3);
  transition:color .2s ease,transform .22s ease;
}
.faq-item.is-open .faq-icon{color:var(--primary);transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.faq-a-inner{
  margin:0 0 22px 42px;padding:4px 0 4px 20px;
  border-left:2px solid var(--primary);background:rgba(31,227,194,.03);
}
.faq-a p{color:var(--text-2);font-size:15px;line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{position:relative;padding:96px 0;text-align:center;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;left:50%;top:50%;width:760px;height:520px;
  transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(31,227,194,.12),rgba(31,227,194,0) 72%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:560px;margin:0 auto}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:16px}
.cta-inner p{color:var(--text-2);font-size:15.5px;margin-bottom:30px}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr .9fr .9fr 1.3fr;gap:44px}
.footer-brand .brand{margin-bottom:18px}
.footer-desc{font-size:14px;color:var(--text-3);line-height:1.85;max-width:26em}
.footer-col h4{font-size:13px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.footer-col a{
  display:block;padding:9px 0;font-size:14.5px;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-form h4{font-size:13px;letter-spacing:.16em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input[type="text"]{
  flex:1 1 180px;height:46px;padding:0 14px;border-radius:var(--radius-btn);
  background:rgba(4,8,16,.7);border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input[type="text"]::placeholder{color:var(--text-3)}
.sub-form input[type="text"]:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(31,227,194,.12)}
.sub-form .btn{height:46px;padding:0 18px;font-size:14px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 28px}
  .main-nav{
    position:fixed;top:0;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:96px 28px 34px;
    background:rgba(9,13,23,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:transform .22s ease,opacity .22s ease,visibility .22s ease;
    z-index:65;max-height:100vh;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{
    width:100%;padding:18px 0;font-size:16.5px;
    border-bottom:1px solid var(--line-soft);color:var(--text);
  }
  .nav-link.is-active::after{left:0;width:34px;bottom:12px}
  .nav-link .dot{right:2px;top:26px}
  .nav-toggle{display:block;z-index:80}
  .hero{padding:48px 0 64px}
  .section{padding:72px 0}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
  .footer-form{grid-column:1 / -1}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-wrap{height:70px}
  .brand-full{font-size:14px}
  .nav-right .btn{display:none}
  .hero-facts{gap:26px}
  .timeline::before{left:9px}
  .tl-item{padding-left:40px}
  .tl-dot{left:3px;top:8px;width:12px;height:12px}
  .tl-body{padding:18px 18px}
  .tl-body h3{font-size:1.1rem}
  .stat{padding:0 18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:520px){
  .hero h1{font-size:2rem}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{flex:1 1 100%}
  .btn-text{border:1px solid var(--line);border-radius:var(--radius-btn);height:46px}
  .stat-row{grid-template-columns:1fr;gap:22px 0}
  .stat{border-left:0;padding-left:0;border-top:1px solid var(--line-soft);padding-top:18px}
  .stat:first-child{border-top:0;padding-top:0}
  .chip-group .chip{flex:1 1 100%;justify-content:center}
  .alert-form{padding:22px 18px}
  .faq-a-inner{margin-left:0}
}

/* roulang page: category3 */
:root{
  --bg-0:#070A12;
  --bg-1:#0C111E;
  --bg-2:#101728;
  --text:#E8EFFA;
  --text-2:#8FA0BF;
  --text-3:#6B7A99;
  --main:#1FE3C2;
  --main-soft:rgba(31,227,194,.08);
  --main-line:rgba(31,227,194,.35);
  --accent:#FF6A8A;
  --accent-soft:rgba(255,106,138,.12);
  --line:rgba(140,190,255,.12);
  --line-strong:rgba(140,190,255,.26);
  --glass:rgba(255,255,255,.045);
  --glass-solid:#111827;
  --r-card:18px;
  --r-img:14px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.7);
  --shadow-inset:inset 0 1px 0 rgba(255,255,255,.06);
  --container:1240px;
  --font-cn:"Noto Sans SC","Source Han Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  --font-num:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,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-cn);
  font-size:1rem;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease;}
a:hover,a:focus{color:var(--main);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--main);outline-offset:3px;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:600;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:110px 0;}
.section-sm{padding:72px 0;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:.9375rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background-color .25s ease,border-color .25s ease,color .25s ease;
}
.btn-primary{background:var(--main);color:#04211C;box-shadow:0 0 0 rgba(31,227,194,0);}
.btn-primary:hover{background:#3BEBCE;color:#04211C;transform:translateY(-1px);box-shadow:0 10px 30px -8px rgba(31,227,194,.65);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 rgba(31,227,194,0);}
.btn-glow{box-shadow:0 0 22px -6px rgba(31,227,194,.55);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{border-color:var(--main);background:var(--main-soft);color:var(--main);}
.btn-text{background:none;border:none;color:var(--text-2);padding:0 4px;height:auto;border-radius:0;}
.btn-text:hover{color:var(--main);}
.link-line{border-bottom:1px solid var(--line-strong);padding-bottom:2px;}
.link-line:hover{border-bottom-color:var(--main);color:var(--main);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(7,10,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid transparent;
  border-bottom:1px solid var(--line);
  transition:background-color .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:rgba(7,10,18,.94);border-bottom-color:var(--line-strong);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{display:inline-grid;grid-template-columns:repeat(3,4px);gap:4px;align-items:center;}
.brand-mark i{display:block;width:4px;height:4px;border-radius:50%;background:var(--main);opacity:.85;}
.brand-mark i:nth-child(2){opacity:.5;}
.brand-mark i:nth-child(3){opacity:.28;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-top{font-family:var(--font-num);font-size:.6875rem;letter-spacing:.36em;color:var(--main);}
.brand-full{font-size:.9375rem;font-weight:600;color:var(--text);letter-spacing:.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:34px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  font-size:.9375rem;color:var(--text-2);letter-spacing:.04em;padding:6px 0;
}
.nav-link .dot{width:4px;height:4px;border-radius:50%;background:transparent;transition:background-color .22s ease;}
.nav-link:hover{color:var(--text);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--main);border-radius:2px;
}
.nav-link.is-active .dot{background:var(--main);}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:transparent;cursor:pointer;position:relative;
}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1px;background:var(--text);transition:.22s ease;}
.nav-toggle span:nth-child(1){top:17px;}
.nav-toggle span:nth-child(2){top:26px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:22px;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){top:22px;transform:rotate(-45deg);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:116px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.8125rem;color:var(--text-3);}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--main);}
.crumb .sep{color:rgba(140,190,255,.3);}
.crumb .current{color:var(--text-2);}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:44px 0 0;
  background-image:linear-gradient(180deg,rgba(7,10,18,.86),rgba(7,10,18,.97)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding-bottom:96px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:var(--r-badge);
  background:var(--main-soft);color:var(--main);font-size:.8125rem;letter-spacing:.06em;border:1px solid rgba(31,227,194,.22);
}
.hero h1{
  margin:22px 0 18px;font-size:clamp(2.1rem,4.6vw,3.4rem);font-weight:700;line-height:1.15;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:var(--main);}
.hero-sub{max-width:560px;color:var(--text-2);font-size:1.0625rem;line-height:1.9;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:34px;}
.hero-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),var(--shadow-inset);
}
.hero-card .media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.hero-card .media img{width:100%;height:100%;object-fit:cover;}
.hero-card .media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,10,18,.05),rgba(7,10,18,.72));}
.badge-live{
  position:absolute;top:14px;left:14px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--accent-soft);color:var(--accent);font-size:.75rem;letter-spacing:.08em;border:1px solid rgba(255,106,138,.3);
}
.badge-live i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}
.hero-card .meta-bar{
  position:absolute;left:0;right:0;bottom:0;z-index:2;display:flex;justify-content:space-between;align-items:center;
  padding:12px 16px;font-size:.8125rem;color:var(--text-2);border-top:1px solid var(--line);
  background:rgba(7,10,18,.55);
}
.hero-card .meta-bar strong{color:var(--text);font-family:var(--font-num);font-weight:600;}
.hero-card .card-body{padding:20px 22px 22px;}
.hero-card .card-body h3{font-size:1.0625rem;}
.hero-card .card-body p{margin-top:10px;color:var(--text-2);font-size:.875rem;line-height:1.8;}

/* ---------- 数字缓冲带 ---------- */
.stat-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);}
.stat-band .inner{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:34px 24px;text-align:left;border-left:1px solid var(--line);}
.stat-item:first-child{border-left:none;}
.stat-item .value{font-family:var(--font-num);font-size:clamp(1.75rem,3vw,2.4rem);font-weight:600;color:var(--main);line-height:1;}
.stat-item .value small{font-size:.8125rem;color:var(--text-2);margin-left:6px;font-family:var(--font-cn);}
.stat-item .label{margin-top:10px;font-size:.8125rem;color:var(--text-2);letter-spacing:.04em;}

/* ---------- 板块标题 ---------- */
.sec-head{margin-bottom:52px;max-width:760px;}
.sec-head .kicker{
  display:inline-block;font-family:var(--font-num);font-size:.75rem;letter-spacing:.28em;color:var(--main);margin-bottom:14px;
}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:600;}
.sec-head p{margin-top:16px;color:var(--text-2);font-size:1rem;}

/* ---------- 非对称双列卡片 ---------- */
.asym{display:grid;grid-template-columns:7fr 5fr;gap:28px;margin-bottom:28px;}
.glass-card{
  position:relative;border-radius:var(--r-card);border:1px solid var(--line);
  background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),var(--shadow-inset);overflow:hidden;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .glass-card,.hero-card{background:var(--glass-solid);}
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.card-large .media{aspect-ratio:16/9;overflow:hidden;}
.card-large .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card-large:hover .media img{transform:scale(1.03);}
.card-large .body{padding:26px 28px 28px;}
.card-large .body h3{font-size:1.25rem;}
.card-large .body p{margin-top:12px;color:var(--text-2);font-size:.9375rem;line-height:1.85;}
.card-stack{display:grid;grid-template-rows:1fr 1fr;gap:28px;}
.card-small{display:flex;align-items:stretch;}
.card-small .media{flex:0 0 44%;aspect-ratio:4/3;overflow:hidden;border-right:1px solid var(--line);}
.card-small .media img{width:100%;height:100%;object-fit:cover;}
.card-small .body{padding:18px 20px;display:flex;flex-direction:column;justify-content:center;}
.card-small .body h3{font-size:1rem;}
.card-small .body p{margin-top:8px;color:var(--text-2);font-size:.8125rem;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.tag{
  display:inline-block;margin-top:12px;height:24px;line-height:24px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--main-soft);color:var(--main);font-size:.75rem;letter-spacing:.04em;max-width:6em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tag.tag-hot{background:var(--accent-soft);color:var(--accent);}

/* ---------- 醒目标题带 ---------- */
.shout-band{
  position:relative;margin:72px 0;padding:48px 44px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line);overflow:hidden;
}
.shout-band::before{
  content:"";position:absolute;top:-60%;left:12%;width:520px;height:320px;
  background:radial-gradient(circle,rgba(31,227,194,.16),transparent 70%);
  pointer-events:none;
}
.shout-band h2{position:relative;font-size:clamp(1.4rem,2.4vw,1.9rem);}
.shout-band p{position:relative;margin-top:14px;color:var(--text-2);max-width:760px;font-size:.9375rem;}

/* ---------- 清单 ---------- */
.check-list{border-top:1px solid var(--line);}
.check-item{
  display:flex;gap:20px;align-items:flex-start;padding:24px 0 24px 18px;border-bottom:1px solid var(--line);
  border-left:2px solid transparent;transition:border-color .24s ease,transform .24s ease,padding-left .24s ease;
}
.check-item:hover{border-left-color:var(--main);padding-left:26px;}
.check-item .idx{font-family:var(--font-num);font-size:.875rem;color:var(--text-3);flex:0 0 42px;padding-top:4px;}
.check-item h3{font-size:1.0625rem;}
.check-item p{margin-top:8px;color:var(--text-2);font-size:.9375rem;}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--bg-1);
  transition:border-color .24s ease,transform .24s ease;
}
.step:hover{border-color:var(--line-strong);transform:translateY(-4px);}
.step .no{font-family:var(--font-num);font-size:1.5rem;color:var(--main);line-height:1;}
.step h3{margin-top:16px;font-size:1.0625rem;}
.step p{margin-top:10px;color:var(--text-2);font-size:.875rem;line-height:1.85;}

/* ---------- FAQ ---------- */
.faq{max-width:920px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;padding:22px 4px;background:none;border:none;
  color:var(--text);font-size:1.0625rem;font-weight:600;text-align:left;cursor:pointer;transition:color .22s ease;
}
.faq-q:hover{color:var(--main);}
.faq-q .q-no{font-family:var(--font-num);font-size:.8125rem;color:var(--text-3);flex:0 0 34px;}
.faq-q .sign{margin-left:auto;font-family:var(--font-num);font-size:1.125rem;color:var(--main);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a .inner{
  padding:0 4px 22px 50px;color:var(--text-2);font-size:.9375rem;line-height:1.9;
  border-left:2px solid var(--main);margin-left:2px;
}
.faq-item.is-open .faq-a{max-height:340px;}

/* ---------- CTA ---------- */
.cta-band{position:relative;padding:96px 0;text-align:center;background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.cta-band::before{
  content:"";position:absolute;left:50%;top:10%;transform:translateX(-50%);
  width:680px;height:360px;background:radial-gradient(circle,rgba(31,227,194,.14),transparent 70%);pointer-events:none;
}
.cta-inner{position:relative;max-width:660px;margin:0 auto;}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2rem);}
.cta-band p{margin-top:16px;color:var(--text-2);font-size:.9375rem;}
.cta-band .btn{margin-top:32px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--line);padding:80px 0 0;font-size:.9375rem;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:64px;}
.footer-brand .footer-desc{margin-top:18px;color:var(--text-3);font-size:.875rem;line-height:1.9;max-width:320px;}
.footer-col h4,.footer-form h4{font-size:.9375rem;color:var(--text);margin-bottom:20px;font-weight:600;}
.footer-col a{display:block;padding:9px 0;color:var(--text-2);border-bottom:1px solid rgba(140,190,255,.07);font-size:.875rem;}
.footer-col a:hover{color:var(--main);border-bottom-color:var(--main-line);}
.sub-form{display:flex;gap:10px;}
.sub-form input{
  flex:1 1 auto;min-width:0;height:46px;padding:0 14px;border-radius:var(--r-btn);
  background:var(--bg-1);border:1px solid var(--line-strong);color:var(--text);font-size:.875rem;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.sub-form input::placeholder{color:var(--text-3);}
.sub-form input:focus{outline:none;border-color:var(--main);box-shadow:0 0 0 4px rgba(31,227,194,.14);}
.form-tip{margin-top:12px;font-size:.8125rem;color:var(--text-3);}
.form-tip.is-error{color:var(--accent);}
.form-tip.is-ok{color:var(--main);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line);padding:22px 0 30px;font-size:.8125rem;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 28px;}
  .section{padding:80px 0;}
  .section-sm{padding:56px 0;}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-bottom:72px;}
  .asym{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:900px){
  .nav-wrap{height:68px;}
  .main-nav{
    position:fixed;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(7,10,18,.98);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:6px 20px 18px;opacity:0;transform:translateY(-10px);pointer-events:none;transition:opacity .22s ease,transform .22s ease;
    max-height:calc(100vh - 68px);overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-link{padding:16px 2px;border-bottom:1px solid var(--line);font-size:1rem;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{color:var(--main);}
  .nav-link.is-active::before{
    content:"";width:6px;height:22px;border-radius:3px;background:var(--main-soft);
    border:1px solid rgba(31,227,194,.35);margin-right:2px;order:-1;
  }
  .nav-toggle{display:block;}
  .nav-right .btn{gisplay:none;}
  .nav-right .btn-primary{display:none;}
  .crumb-bar{padding-top:96px;}
}
@media (max-width:768px){
  .stat-band .inner{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(3){border-left:none;}
  .stat-item{padding:26px 18px;border-top:1px solid var(--line);}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-top:none;}
  .card-small{flex-direction:column;}
  .card-small .media{flex:none;width:100%;aspect-ratio:4/3;border-right:none;border-bottom:1px solid var(--line);}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .sub-form{flex-wrap:wrap;}
  .sub-form input{flex:1 1 100%;}
  .sub-form .btn{width:100%;}
  .shout-band{padding:34px 24px;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero{padding-top:20px;}
  .hero h1{margin-top:18px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .card-large .body{padding:20px;}
  .faq-a .inner{padding-left:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}