/* roulang page: index */
:root{
  --bg-0:#07080B;
  --bg-1:#0E1116;
  --bg-2:#151A22;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#B8FF2E;
  --primary-2:#00E5C0;
  --accent:#FF2E88;
  --text-0:#F2F5F7;
  --text-1:#A7B0BB;
  --text-2:#6B7684;
  --ok:#35D07F;
  --warn:#FFC53D;
  --err:#FF4D6D;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow:0 18px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px var(--primary),0 12px 40px rgba(184,255,46,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1240px;
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Chakra Petch","Space Grotesk",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-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(184,255,46,.28);color:#fff}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px}
.section{padding:104px 0;position:relative}
.section--tight{padding:76px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,3.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head .section-sub{margin-top:10px;color:var(--text-1);font-size:15px;max-width:640px}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--primary-2);text-transform:uppercase;
}
.kicker::before{content:"";width:18px;height:1px;background:var(--primary-2);display:inline-block}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  border-radius:var(--r-badge);
  background:rgba(0,229,192,.08);
  border:1px solid rgba(0,229,192,.32);
  color:var(--primary-2);
  white-space:nowrap;
}
.badge--accent{color:var(--accent);border-color:rgba(255,46,136,.34);background:rgba(255,46,136,.08)}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--text-0);font-size:14px;font-weight:600;transition:color .15s var(--ease)}
.text-link span{transition:transform .15s var(--ease)}
.text-link:hover{color:var(--primary-2)}
.text-link:hover span{transform:translateX(4px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;cursor:pointer;
  border:1px solid transparent;
  transition:transform .15s var(--ease),background-color .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),filter .15s var(--ease);
}
.btn-primary{background:var(--primary);color:#07080B}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{border-color:var(--line-strong);color:var(--text-0)}
.btn-ghost:hover{border-color:var(--primary-2);color:var(--primary-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-xs{height:34px;padding:0 14px;font-size:13px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ HEADER ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(7,8,11,.92);border-bottom:1px solid var(--line);transition:background-color .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease)}
.site-header::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary-2),transparent);opacity:.9}
.site-header.is-scrolled{background:rgba(7,8,11,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom-color:var(--line-strong)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;flex:0 0 auto;color:var(--primary)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-link{position:relative;padding:6px 0;font-size:14px;font-weight:500;color:var(--text-1);transition:color .15s var(--ease)}
.nav-link::after{content:"";position:absolute;left:50%;bottom:-4px;width:0;height:1px;background:var(--primary-2);transform:translateX(-50%);transition:width .24s var(--ease)}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--primary);text-shadow:0 0 14px rgba(184,255,46,.35)}
.nav-link.is-active::after{width:100%;height:2px;background:var(--primary);bottom:-4px}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:var(--r-btn);color:var(--text-1);cursor:pointer;transition:color .15s var(--ease),border-color .15s var(--ease)}
.icon-btn:hover{color:var(--primary);border-color:var(--primary)}
.burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;border:1px solid var(--line-strong);border-radius:var(--r-btn)}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-0);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:110}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:340px;background:var(--bg-1);border-left:1px solid var(--line);padding:88px 24px 32px;display:flex;flex-direction:column;gap:6px;transform:translateX(100%);transition:transform .24s var(--ease);z-index:120;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-link{position:relative;display:block;padding:14px 12px 14px 18px;font-size:15px;font-weight:500;color:var(--text-1);border-radius:8px;transition:color .15s var(--ease),background-color .15s var(--ease)}
.drawer-link::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--primary);transform:scaleY(0);transition:transform .24s var(--ease)}
.drawer-link:hover,.drawer-link.is-active{color:var(--text-0);background:rgba(255,255,255,.03)}
.drawer-link.is-active{color:var(--primary)}
.drawer-link.is-active::before{transform:scaleY(1)}
.drawer .btn{margin-top:20px;width:100%}

/* ============ HERO ============ */
.hero{position:relative;overflow:hidden;padding:150px 0 96px;min-height:640px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.34;transform:scale(1.03)}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,8,11,.9) 0%,rgba(7,8,11,.74) 42%,var(--bg-0) 100%)}
.hero::after{content:"";position:absolute;left:-12%;bottom:-34%;width:62%;height:76%;background:radial-gradient(circle at 30% 70%,rgba(0,229,192,.16),transparent 62%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero h1{margin:20px 0 0;font-size:clamp(28px,6.4vw,56px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{margin-top:20px;font-size:clamp(15px,1.6vw,18px);color:var(--text-1);line-height:1.75;max-width:34em}
.hero-actions{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:48px}
.hero-stats li{padding:0 28px;border-left:1px solid var(--line)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.stat-num{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(30px,4vw,44px);line-height:1.05;font-weight:700;color:var(--text-0)}
.stat-num i{font-style:normal;color:var(--primary);font-size:.6em;margin-left:2px}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--text-2);letter-spacing:.04em}
.hero-media{position:relative}
.media-card{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow);background:linear-gradient(135deg,var(--bg-2),var(--bg-1))}
.media-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.media-main{aspect-ratio:4/3}
.media-sub{position:absolute;right:-18px;bottom:-34px;width:47%;aspect-ratio:4/3;border-radius:var(--r-card)}
.media-sub img{aspect-ratio:4/3}

/* ============ 主张条 ============ */
.claim{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1)}
.claim-inner{display:flex;align-items:center;gap:40px;padding:32px 0;flex-wrap:wrap}
.claim-title{font-size:clamp(18px,2.2vw,22px);font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.claim-list{display:flex;flex-wrap:wrap;gap:0;margin-left:auto}
.claim-list li{padding:0 26px;font-size:14px;color:var(--text-1);border-left:1px solid var(--line)}
.claim-list li:first-child{border-left:0}

/* ============ 故事 ============ */
.story-item{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center;padding:56px 0}
.story-item + .story-item{border-top:1px solid var(--line)}
.story-item:nth-child(even) .story-media{order:2}
.story-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-2)}
.story-media img{width:100%;aspect-ratio:5/4;object-fit:cover;transition:transform .4s var(--ease)}
.story-media:hover img{transform:scale(1.04)}
.story-num{font-family:var(--font-num);font-size:64px;line-height:1;font-weight:700;color:transparent;-webkit-text-stroke:1px var(--line-strong);margin-bottom:16px}
.story-body h3{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.35;margin-bottom:18px}
.story-body p{color:var(--text-1);margin-bottom:16px}
.story-quote{border-left:3px solid var(--primary);padding:6px 0 6px 18px;color:var(--text-0);font-size:16px;line-height:1.7}

/* ============ 栏目入口 ============ */
.topic-list{border-top:1px solid var(--line)}
.topic-item{display:block}
.topic-link{position:relative;display:grid;grid-template-columns:104px minmax(0,1fr) auto;gap:22px;align-items:center;padding:20px 20px 20px 22px;border-bottom:1px solid var(--line);transition:background-color .15s var(--ease),padding-left .15s var(--ease)}
.topic-link::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--primary);transform:scaleY(0);transition:transform .24s var(--ease)}
.topic-link:hover{background:rgba(255,255,255,.03)}
.topic-link:hover::before{transform:scaleY(1)}
.topic-thumb{width:104px;aspect-ratio:4/3;border-radius:var(--r-badge);overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,var(--bg-2),var(--bg-1))}
.topic-thumb img{width:100%;height:100%;object-fit:cover}
.topic-name{display:block;font-size:18px;font-weight:600;transition:color .15s var(--ease)}
.topic-link:hover .topic-name{color:var(--primary)}
.topic-desc{display:block;margin-top:6px;font-size:14px;color:var(--text-1)}
.topic-meta{display:flex;align-items:center;gap:16px;color:var(--text-2);font-size:13px}
.topic-meta .arrow{font-size:16px;color:var(--primary-2);transition:transform .15s var(--ease)}
.topic-link:hover .arrow{transform:translateX(4px)}

/* ============ 精选卡 ============ */
.featured-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.card{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.card:hover .card-title{color:var(--primary)}
.card-link{display:flex;flex-direction:column;height:100%;border-radius:var(--r-card);overflow:hidden}
.thumb{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--bg-2),var(--bg-1))}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .thumb img{transform:scale(1.04)}
.thumb-16x9{aspect-ratio:16/9}
.thumb-4x3{aspect-ratio:4/3}
.thumb .badge{position:absolute;left:14px;top:14px;background:rgba(7,8,11,.78);backdrop-filter:blur(4px)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:19px;line-height:1.45;font-weight:600;transition:color .15s var(--ease);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;color:var(--text-1);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-2)}
.card-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.card-meta .read{color:var(--primary-2);display:inline-flex;align-items:center;gap:6px}
.card:hover .card-meta .read span{transform:translateX(4px)}
.card-meta .read span{transition:transform .15s var(--ease)}
.feature-main .card-title{font-size:clamp(20px,2.4vw,26px)}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:18px;padding:64px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--bg-1);text-align:center}
.empty-mark{width:56px;height:56px;border:1px solid var(--line-strong);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary-2);font-family:var(--font-num);font-size:20px}
.empty-state p{color:var(--text-1);font-size:15px}

/* ============ 数据与信任 ============ */
.trust{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
.trust-main .num-big{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(52px,8vw,84px);line-height:1;font-weight:700;color:var(--text-0)}
.trust-main .num-big i{font-style:normal;color:var(--primary);font-size:.5em;margin-left:4px}
.trust-main p{margin-top:16px;color:var(--text-1);max-width:26em}
.trust-cells{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.trust-cell{border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;background:var(--bg-2);transition:border-color .24s var(--ease),transform .24s var(--ease)}
.trust-cell:hover{border-color:var(--primary-2);transform:translateY(-2px)}
.trust-cell h3{font-size:16px;font-weight:600;margin-bottom:8px}
.trust-cell p{font-size:14px;color:var(--text-1);line-height:1.7}
.quote-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:56px;padding-top:40px;border-top:1px solid var(--line)}
.quote-item{padding-left:18px;border-left:3px solid var(--accent)}
.quote-item p{font-size:15px;color:var(--text-0);line-height:1.75}
.quote-item .who{display:block;margin-top:12px;font-size:13px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-2);margin-bottom:14px;overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{border-color:rgba(184,255,46,.4)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;padding:20px 24px;font-size:16px;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"?";flex:0 0 auto;font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--primary);width:20px}
.faq-item summary::after{content:"";margin-left:auto;width:9px;height:9px;border-right:1px solid var(--primary-2);border-bottom:1px solid var(--primary-2);transform:rotate(45deg);transition:transform .24s var(--ease)}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-answer{padding:0 24px 22px 60px;color:var(--text-1);font-size:15px;line-height:1.85;border-left:2px solid rgba(184,255,46,.25);margin-left:24px}

/* ============ CTA ============ */
.cta{background:var(--bg-1);position:relative;border-top:1px solid var(--line)}
.cta::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.cta-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;padding:80px 0}
.cta h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.3}
.cta p{margin-top:14px;color:var(--text-1);font-size:15px}
.subscribe{display:flex;gap:12px;flex-wrap:wrap}
.subscribe input{flex:1 1 240px;height:44px;padding:0 16px;background:var(--bg-2);border:1px solid var(--line-strong);border-radius:var(--r-btn);color:var(--text-0);transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.subscribe input::placeholder{color:var(--text-2)}
.subscribe input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,255,46,.16);outline:none}
.form-msg{margin-top:12px;font-size:13px;color:var(--text-2);min-height:20px}
.form-msg.is-ok{color:var(--ok)}
.form-msg.is-err{color:var(--err)}

/* ============ FOOTER ============ */
.site-footer{background:#050609;border-top:1px solid var(--line);position:relative;padding-top:72px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary-2),transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:26px;height:26px}
.footer-brand strong{font-size:16px;font-weight:700}
.footer-about{font-size:14px;color:var(--text-1);line-height:1.8;max-width:30em}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--text-0);margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-1);transition:color .15s var(--ease),transform .15s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--primary-2);transform:translateX(-2px)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-2)}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--primary-2)}
.socials{display:flex;gap:10px}
.socials a{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:var(--r-btn);color:var(--text-1);transition:color .15s var(--ease),border-color .15s var(--ease)}
.socials a:hover{color:var(--primary);border-color:var(--primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;border:1px solid var(--primary);color:var(--primary);background:rgba(7,8,11,.85);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .24s var(--ease),transform .24s var(--ease);z-index:90}
.to-top.is-show{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 40px}
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  .container{padding:0 32px}
  .main-nav{display:none}
  .burger{display:flex}
  .header-actions .btn{display:none}
  .hero{padding:130px 0 80px}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .media-sub{right:12px;bottom:-26px;width:42%}
  .featured-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .trust-grid{grid-template-columns:1fr;gap:36px}
  .quote-row{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .story-item{grid-template-columns:1fr;gap:28px;padding:44px 0}
  .story-item:nth-child(even) .story-media{order:0}
}
@media (max-width:768px){
  body{font-size:15px}
  .container{padding:0 20px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .header-inner{height:60px}
  .brand-text{font-size:15px}
  .hero{padding:110px 0 64px;min-height:auto}
  .hero-stats li{padding:0 18px}
  .hero-stats li:nth-child(3){padding-left:0;border-left:0;margin-top:18px}
  .hero-stats li:nth-child(4){margin-top:18px}
  .hero-actions .btn{flex:1 1 100%}
  .claim-inner{gap:18px;padding:26px 0}
  .claim-list{margin-left:0;gap:0;flex-direction:column}
  .claim-list li{border-left:0;padding:6px 0}
  .topic-link{grid-template-columns:78px minmax(0,1fr);gap:16px;padding:16px 14px}
  .topic-thumb{width:78px}
  .topic-meta{grid-column:1/-1;justify-content:flex-start;padding-left:94px;margin-top:-8px}
  .news-grid{grid-template-columns:1fr}
  .trust-cells{grid-template-columns:1fr}
  .quote-row{grid-template-columns:1fr;gap:20px;margin-top:40px;padding-top:32px}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:60px 0}
  .subscribe input{flex:1 1 100%}
  .subscribe .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .faq-answer{padding:0 20px 20px 20px;margin-left:18px}
  .faq-item summary{padding:18px 20px;font-size:15px}
}
@media (max-width:520px){
  .hero::after{display:none}
  .hero-bg{opacity:.28}
  .media-sub{display:none}
  .hero-stats{flex-direction:column;gap:20px;margin-top:36px}
  .hero-stats li{padding:0;border-left:0}
  .hero-stats li:nth-child(3),.hero-stats li:nth-child(4){margin-top:0}
  .story-num{font-size:48px}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --bg-0:#07080B;
  --bg-1:#0E1116;
  --bg-2:#151A22;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#B8FF2E;
  --primary-2:#00E5C0;
  --accent:#FF2E88;
  --text-0:#F2F5F7;
  --text-1:#A7B0BB;
  --text-2:#6B7684;
  --ok:#35D07F;
  --warn:#FFC53D;
  --err:#FF4D6D;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-badge:6px;
  --sh:0 18px 48px rgba(0,0,0,.5);
  --sh-neon:0 0 0 1px var(--primary),0 12px 40px rgba(184,255,46,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Chakra Petch","Space Grotesk",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-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .15s var(--ease),border-color .15s var(--ease);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-0);line-height:1.25;font-weight:700;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(184,255,46,.28);color:var(--text-0);}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(7,8,11,.92);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary-2),transparent);
  opacity:.85;
}
.site-header.is-scrolled{
  background:rgba(7,8,11,.78);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line-strong);
}
.header-inner{
  height:72px;display:flex;align-items:center;gap:28px;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  color:var(--primary);border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(184,255,46,.10),rgba(0,229,192,.06));
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.brand:hover .brand-mark{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),0 10px 30px rgba(184,255,46,.18);}
.brand-text{font-size:16.5px;font-weight:700;color:var(--text-0);letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--text-1);
  padding:6px 0;transition:color .15s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;background:var(--primary-2);
  transition:left .24s var(--ease),right .24s var(--ease),height .24s var(--ease),background .15s var(--ease);
}
.nav-link:hover{color:var(--text-0);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{color:var(--primary);text-shadow:0 0 14px rgba(184,255,46,.35);}
.nav-link.is-active::after{left:0;right:0;height:2px;background:var(--primary);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:36px;height:36px;border-radius:var(--r-btn);display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--text-1);
  transition:color .15s var(--ease),border-color .15s var(--ease),background .15s var(--ease);
}
.icon-btn:hover{color:var(--primary-2);border-color:var(--primary-2);background:rgba(0,229,192,.06);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:14px;font-weight:600;
  padding:0 20px;height:44px;white-space:nowrap;
  transition:transform .15s var(--ease),background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),box-shadow .15s var(--ease);
}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn-primary{background:var(--primary);color:#07080B;border:1px solid var(--primary);}
.btn-primary:hover{background:#c8ff55;transform:translateY(-1px);box-shadow:0 12px 32px rgba(184,255,46,.22);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--text-0);border:1px solid var(--line-strong);}
.btn-ghost:hover{border-color:var(--primary-2);color:var(--primary-2);transform:translateY(-1px);}
.btn-text{
  height:auto;padding:0;color:var(--primary);font-weight:600;gap:6px;
}
.btn-text svg{transition:transform .15s var(--ease);}
.btn-text:hover svg{transform:translateX(4px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line-strong);
  position:relative;
}
.nav-toggle span{
  position:absolute;left:13px;right:13px;height:2px;background:var(--text-0);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span:nth-child(1){top:15px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:27px;}
.nav-toggle.is-open span:nth-child(1){top:21px;transform:rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){top:21px;transform:rotate(-45deg);}

.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:90;
  background:var(--bg-1);border-left:1px solid var(--line-strong);
  transform:translateX(105%);transition:transform .24s var(--ease);
  padding:88px 24px 32px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-link{
  display:block;padding:14px 12px;font-size:15px;color:var(--text-1);border-radius:8px;
  border-left:3px solid transparent;transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease);
}
.drawer-link:hover{background:rgba(255,255,255,.03);color:var(--text-0);}
.drawer-link.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(184,255,46,.05);}
.nav-drawer .btn{width:100%;margin-top:18px;}
.nav-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:85;opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ---------- layout ---------- */
main{padding-top:72px;}
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.section-head{margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,3.6vw,34px);letter-spacing:-.01em;}
.section-head p{color:var(--text-2);font-size:14px;margin:10px 0 0;}

/* ---------- breadcrumb ---------- */
.crumbs{padding:28px 0 0;font-size:13px;color:var(--text-2);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--primary-2);}
.crumbs .sep{color:var(--text-2);opacity:.6;}
.crumbs .cur{color:var(--text-1);}

/* ---------- article head ---------- */
.article-hero{padding:32px 0 0;}
.article-hero-inner{max-width:860px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--bg-2);border:1px solid var(--line-strong);
  font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--primary-2);
}
.badge-new{color:var(--accent);border-left:2px solid var(--accent);}
.article-title{
  font-size:clamp(28px,4.6vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.15;
  margin:18px 0 16px;color:var(--text-0);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-2);opacity:.5;}
.article-lead{
  margin:22px 0 0;max-width:780px;font-size:16px;color:var(--text-1);
  border-left:3px solid var(--primary);padding-left:16px;
}
.article-cover{
  margin:34px 0 0;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-strong);background:var(--bg-2);aspect-ratio:16/9;box-shadow:var(--sh);
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- article body ---------- */
.article-wrap{padding:48px 0 24px;}
.article-body{
  max-width:780px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text-1);
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:clamp(22px,2.6vw,27px);color:var(--text-0);line-height:1.3;
  border-left:3px solid var(--primary);padding-left:14px;margin:44px 0 16px;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--text-0);margin:32px 0 12px;}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--text-0);margin:26px 0 10px;}
.article-body p{margin:0 0 1.1em;}
.article-body strong{color:var(--text-0);font-weight:600;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(184,255,46,.5);}
.article-body a:hover{color:var(--primary-2);border-bottom-color:var(--primary-2);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:20px;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;border-radius:2px;background:var(--primary-2);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:10px;padding-left:4px;}
.article-body ol li::marker{color:var(--primary);font-weight:600;}
.article-body blockquote{
  margin:0 0 1.3em;padding:16px 20px;background:var(--bg-1);
  border-left:3px solid var(--accent);border-radius:8px;color:var(--text-1);font-style:normal;
}
.article-body img{border-radius:14px;margin:22px auto;height:auto;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--text-2);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:14px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-2);color:var(--text-0);font-weight:600;}
.article-body code{
  background:var(--bg-2);padding:2px 6px;border-radius:4px;font-size:14px;color:var(--primary);
  font-family:var(--font-num);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- empty / error ---------- */
.empty-state{
  max-width:620px;margin:0 auto;text-align:center;padding:56px 28px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);
}
.empty-mark{
  width:72px;height:72px;margin:0 auto 20px;border-radius:20px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary-2);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);font-size:14.5px;margin-bottom:24px;}

/* ---------- tags ---------- */
.tag-row{max-width:780px;margin:40px auto 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:12px;letter-spacing:.12em;color:var(--text-2);text-transform:uppercase;margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--bg-2);
  font-size:13px;color:var(--text-1);
  transition:color .15s var(--ease),border-color .15s var(--ease),background .15s var(--ease);
}
.tag:hover{color:var(--primary);border-color:var(--primary);background:rgba(184,255,46,.06);}

/* ---------- back link ---------- */
.back-row{max-width:780px;margin:28px auto 0;}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary-2);
}
.back-link svg{transition:transform .15s var(--ease);}
.back-link:hover svg{transform:translateX(-4px);}

/* ---------- cards / related ---------- */
.grid{display:grid;gap:24px;}
.grid-4{grid-template-columns:repeat(4,1fr);}
.card{
  display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh);}
.card:hover .card-title{color:var(--primary);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#101722,#1b2430);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .badge{position:absolute;left:14px;top:14px;background:rgba(7,8,11,.78);backdrop-filter:blur(6px);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.45;color:var(--text-0);transition:color .15s var(--ease);}
.card-desc{font-size:14px;color:var(--text-2);line-height:1.7;margin:0;}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-2);font-variant-numeric:tabular-nums;padding-top:6px;
}
.card-foot .more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;}
.card-foot .more svg{transition:transform .15s var(--ease);}
.card:hover .card-foot .more svg{transform:translateX(4px);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--bg-1);border-top:1px solid var(--line-strong);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.cta-inner{
  display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;padding:64px 0;
}
.cta-inner h2{font-size:clamp(22px,3vw,30px);}
.cta-inner p{color:var(--text-2);margin:12px 0 0;font-size:15px;max-width:440px;}
.subscribe-form{display:flex;gap:12px;align-items:center;}
.subscribe-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--text-0);font-size:14.5px;
  transition:border-color .15s var(--ease),box-shadow .15s var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-2);}
.subscribe-form input:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,255,46,.16);
}
.form-note{font-size:13px;color:var(--text-2);margin-top:12px;min-height:20px;}
.form-note.is-ok{color:var(--ok);}
.form-note.is-err{color:var(--err);}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:#050609;border-top:1px solid var(--line);padding:64px 0 28px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary-2),transparent);opacity:.7;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--primary);}
.footer-brand strong{color:var(--text-0);font-size:16px;font-weight:700;letter-spacing:-.01em;}
.footer-about{font-size:13.5px;color:var(--text-2);line-height:1.8;max-width:320px;margin:0;}
.footer-col h3{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-0);margin-bottom:18px;font-weight:600;}
.footer-col ul li{margin-bottom:12px;font-size:13.5px;color:var(--text-2);}
.footer-col ul li a{display:inline-block;color:var(--text-2);transition:color .15s var(--ease),transform .15s var(--ease);}
.footer-col ul li a:hover{color:var(--primary-2);transform:translateX(-2px);}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials a{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--text-1);
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.socials a:hover{color:var(--primary);border-color:var(--primary);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--text-2);
}
.footer-bottom p{margin:0;}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:12px;z-index:70;
  display:grid;place-items:center;border:1px solid var(--primary);color:var(--primary);
  background:rgba(7,8,11,.85);backdrop-filter:blur(8px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background .15s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(184,255,46,.12);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .header-actions .btn-primary{display:none;}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-inner{height:60px;}
  .brand-text{font-size:15px;}
  main{padding-top:60px;}
  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
  .article-title{font-size:clamp(24px,7vw,32px);}
  .article-wrap{padding:36px 0 16px;}
  .article-body{font-size:15.5px;}
  .cta-inner{padding:48px 0;}
  .subscribe-form{flex-direction:column;align-items:stretch;}
  .subscribe-form .btn{width:100%;}
  .to-top{right:16px;bottom:18px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:560px){
  .grid-4{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .article-lead{font-size:15px;}
  .crumbs{font-size:12.5px;}
}
@media (max-width:480px){
  .article-cover{aspect-ratio:4/3;}
  .header-actions .icon-btn{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#07080B;
  --bg-1:#0E1116;
  --bg-2:#151A22;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#B8FF2E;
  --primary-2:#00E5C0;
  --accent:#FF2E88;
  --text-0:#F2F5F7;
  --text-1:#A7B0BB;
  --text-2:#6B7684;
  --ok:#35D07F;
  --warn:#FFC53D;
  --err:#FF4D6D;
  --r-card:14px;
  --r-big:18px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow:0 18px 48px rgba(0,0,0,.5);
  --shadow-neon:0 0 0 1px var(--primary),0 12px 40px rgba(184,255,46,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Chakra Petch","Space Grotesk",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-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary-2)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(184,255,46,.28)}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* ============ 顶栏导航 ============ */
.top-line{height:1px;background:linear-gradient(90deg,transparent,var(--primary-2),transparent);opacity:.85}
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,8,11,.92);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,8,11,.78);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--line-strong);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{display:inline-flex;color:var(--primary)}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--text-1);
  padding:6px 2px;transition:color .15s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;
  background:var(--primary-2);transition:left .24s var(--ease),right .24s var(--ease);
}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{left:0;right:0;height:2px;background:var(--primary)}
.nav-link.is-active{text-shadow:0 0 14px rgba(184,255,46,.35)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:36px;height:36px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);color:var(--text-1);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.icon-btn:hover{color:var(--primary-2);border-color:var(--primary-2)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line-strong);position:relative;
}
.hamburger span{
  position:absolute;left:12px;right:12px;height:1.6px;background:var(--text-0);
  border-radius:2px;transition:transform .24s var(--ease),opacity .2s var(--ease),top .24s var(--ease);
}
.hamburger span:nth-child(1){top:15px}
.hamburger span:nth-child(2){top:21px}
.hamburger span:nth-child(3){top:27px}
.hamburger.is-open span:nth-child(1){top:21px;transform:rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){top:21px;transform:rotate(-45deg)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--bg-1);border-left:1px solid var(--line-strong);
  transform:translateX(100%);transition:transform .24s var(--ease);
  z-index:80;padding:28px 24px;display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-title{font-size:12px;letter-spacing:.12em;color:var(--text-2);font-weight:600;margin-bottom:6px}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding-left:12px;
  border-left:3px solid transparent;color:var(--text-1);font-size:15px;
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--primary);border-left-color:var(--primary);background:rgba(184,255,46,.05)}
.drawer-cta{margin-top:18px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .15s var(--ease),background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease),box-shadow .24s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#07080B}
.btn-primary:hover{background:#c5ff4d;color:#07080B;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text-0)}
.btn-ghost:hover{border-color:var(--primary-2);color:var(--primary-2)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:600;
}
.btn-text svg{transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ============ 面包屑 / 区块头 ============ */
.crumb{padding-top:26px;font-size:13px;color:var(--text-2);display:flex;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary-2)}
.crumb span.sep{color:var(--text-2);opacity:.6}
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.12em;color:var(--primary-2);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary-2)}
.h2{font-size:clamp(22px,3.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-sub{margin-top:12px;color:var(--text-1);max-width:720px;font-size:15px}

/* ============ Hero ============ */
.hero{padding:34px 0 0;position:relative}
.hero-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:end}
.hero-copy{grid-column:span 8}
.hero-side{grid-column:span 4}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--primary);
  border:1px solid var(--line-strong);border-radius:var(--r-badge);
  padding:7px 12px;background:rgba(184,255,46,.06);
}
.hero h1{
  margin-top:20px;
  font-size:clamp(28px,6.4vw,56px);
  line-height:1.1;font-weight:800;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{margin-top:18px;font-size:17px;color:var(--text-1);max-width:640px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:38px;
  border-top:1px solid var(--line);padding-top:24px;
}
.stat{padding-right:28px;margin-right:28px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0;margin-right:0;padding-right:0}
.stat-num{font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.05;color:var(--text-0);font-family:var(--font-num);font-variant-numeric:tabular-nums}
.stat-num i{font-style:normal;color:var(--primary);font-size:.62em;margin-left:2px}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-2)}
.hero-side .side-card{
  background:var(--bg-1);border:1px solid var(--line-strong);border-radius:var(--r-big);
  padding:24px;
}
.side-card h2{font-size:16px;font-weight:700}
.side-list{margin-top:16px;display:grid;gap:12px}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--text-1);line-height:1.7}
.side-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;background:var(--primary-2);border-radius:2px}

/* 宽幅 banner */
.banner-wide{
  margin-top:44px;position:relative;overflow:hidden;
  border-radius:var(--r-big);border:1px solid var(--line-strong);
  aspect-ratio:21/9;
  background:linear-gradient(135deg,#151A22,#0E1116);
}
.banner-wide img{width:100%;height:100%;object-fit:cover;opacity:.72}
.banner-wide::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 80% at 12% 100%,rgba(0,229,192,.16),transparent 70%),
             linear-gradient(180deg,rgba(7,8,11,.15),rgba(7,8,11,.85));
}
.banner-caption{
  position:absolute;left:32px;bottom:28px;right:32px;z-index:2;
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.banner-caption strong{font-size:clamp(18px,2.2vw,24px);font-weight:700;display:block}
.banner-caption p{color:var(--text-1);font-size:14px;margin-top:6px;max-width:620px}
.banner-tag{
  font-size:12px;font-weight:600;letter-spacing:.1em;color:#07080B;
  background:var(--primary);border-radius:var(--r-badge);padding:6px 10px;
}

/* ============ 主张条 ============ */
.claim-strip{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.claim-inner{display:grid;grid-template-columns:1.1fr 2fr;gap:40px;padding:40px 0;align-items:center}
.claim-title{font-size:19px;font-weight:700;line-height:1.5}
.claim-title span{color:var(--primary)}
.claim-points{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.claim-points li{padding:0 24px;border-left:1px solid var(--line);font-size:14px;color:var(--text-1)}
.claim-points li strong{display:block;color:var(--text-0);font-size:15px;margin-bottom:4px}

/* ============ 杂志网格 ============ */
.mag-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mag-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.mag-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.mag-card:hover .mag-title{color:var(--primary)}
.thumb{
  position:relative;aspect-ratio:4/3;overflow:hidden;
  background:linear-gradient(135deg,#151A22,#0E1116);
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.mag-card:hover .thumb img{transform:scale(1.04)}
.mag-body{padding:20px 22px 24px}
.mag-title{font-size:17px;font-weight:600;line-height:1.45;transition:color .15s var(--ease);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.mag-desc{margin-top:10px;font-size:14px;color:var(--text-1);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  background:var(--bg-2);border:1px solid var(--line-strong);border-radius:var(--r-badge);
  padding:5px 9px;color:var(--primary-2);
}
.badge.on-image{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(7,8,11,.82);backdrop-filter:blur(6px);
}
.badge-accent{
  color:var(--accent);border-color:rgba(255,46,136,.35);
  border-left:2px solid var(--accent);border-radius:0 var(--r-badge) var(--r-badge) 0;
}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:st}
.step{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;position:relative;transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.step:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.step-num{
  font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);display:block;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-1);line-height:1.75}

/* ============ 读者列表 ============ */
.reader-list{border-top:1px solid var(--line)}
.reader-item{
  display:grid;grid-template-columns:120px 1fr auto;gap:24px;align-items:center;
  min-height:64px;padding:20px 16px;border-bottom:1px solid var(--line);
  position:relative;transition:background .2s var(--ease);
}
.reader-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;
  background:var(--primary);opacity:0;transition:opacity .2s var(--ease);
}
.reader-item:hover{background:rgba(255,255,255,.03)}
.reader-item:hover::before{opacity:1}
.reader-item:hover .reader-title{color:var(--primary)}
.reader-time{font-size:13px;color:var(--text-2);font-family:var(--font-num);font-variant-numeric:tabular-nums}
.reader-title{font-size:16px;font-weight:600;transition:color .15s var(--ease)}
.reader-meta{font-size:13px;color:var(--text-2);white-space:nowrap}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 22px;transition:border-color .24s var(--ease);
}
.faq-item[open]{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;
  min-height:64px;padding:16px 0;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"?";flex:0 0 auto;width:22px;height:22px;border-radius:7px;
  border:1px solid var(--primary-2);color:var(--primary-2);
  font-size:12px;font-weight:700;display:grid;place-items:center;
}
.faq-item summary::after{
  content:"";margin-left:auto;width:8px;height:8px;flex:0 0 auto;
  border-right:1.6px solid var(--text-2);border-bottom:1.6px solid var(--text-2);
  transform:rotate(45deg);transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(225deg);border-color:var(--primary)}
.faq-answer{padding:0 0 20px 34px;color:var(--text-1);font-size:15px;line-height:1.85;
  border-left:2px solid transparent;}
.faq-item[open] .faq-answer{border-left:2px solid rgba(184,255,46,.35);padding-left:32px;margin-left:1px}

/* ============ CTA ============ */
.cta-band{
  background:var(--bg-1);border-top:1px solid transparent;border-bottom:1px solid var(--line);
  position:relative;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:72px 0}
.cta-inner h2{font-size:clamp(20px,2.6vw,28px);font-weight:700;line-height:1.3}
.cta-inner p{margin-top:12px;color:var(--text-1);font-size:15px;max-width:520px}
.subscribe-form{display:flex;gap:12px;align-items:center}
.subscribe-form input{
  flex:1 1 auto;height:44px;padding:0 16px;border-radius:var(--r-btn);
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--text-0);
  transition:border-color .15s var(--ease),box-shadow .24s var(--ease);
  min-width:0;
}
.subscribe-form input::placeholder{color:var(--text-2)}
.subscribe-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 1px var(--primary),0 0 24px rgba(184,255,46,.18)}
.form-note{margin-top:12px;font-size:13px;color:var(--text-2);min-height:20px}
.form-note.is-ok{color:var(--ok)}
.form-note.is-err{color:var(--err)}

/* ============ 页脚 ============ */
.site-footer{background:#040507;border-top:1px solid transparent;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,229,192,.9),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--primary)}
.footer-brand strong{color:var(--text-0);font-size:16px;font-weight:700}
.footer-about{margin-top:14px;color:var(--text-1);font-size:14px;line-height:1.8;max-width:340px}
.footer-col h3{font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--text-2);margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14px;color:var(--text-1)}
.footer-col a,.footer-col span{display:inline-block;transition:color .15s var(--ease),transform .15s var(--ease)}
.footer-col a:hover{color:var(--primary-2);transform:translateX(2px)}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-1);
  transition:color .15s var(--ease),border-color .15s var(--ease);
}
.socials a:hover{color:var(--primary-2);border-color:var(--primary-2)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid var(--line);font-size:13px;color:var(--text-2);
}
.footer-bottom .num{color:var(--text-2)}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 32px}
  .mag-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .main-nav{display:none}
  .hamburger{display:block}
  .header-actions{gap:10px}
  .header-actions .btn{display:none}
  .hero-copy,.hero-side{grid-column:span 12}
  .hero-side{margin-top:8px}
  .claim-inner{grid-template-columns:1fr;gap:24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:64px 0}
  .banner-wide{aspect-ratio:16/9}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section.tight{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .mag-grid{grid-template-columns:1fr}
  .hero-stats{gap:20px 0}
  .stat{width:50%;padding-right:16px;margin-right:0;border-right:0}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .hero-actions .btn{width:100%}
  .banner-caption{left:20px;right:20px;bottom:18px}
  .reader-item{grid-template-columns:1fr;gap:8px;padding:18px 14px}
  .reader-meta{white-space:normal}
  .subscribe-form{flex-direction:column;align-items:stretch}
  .subscribe-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
  .footer-about{max-width:none}
  .claim-points{grid-template-columns:1fr}
  .claim-points li{border-left:0;border-top:1px solid var(--line);padding:14px 0}
  .steps{grid-template-columns:1fr}
}
@media (max-width:480px){
  .hero h1{font-size:30px}
  .banner-wide{aspect-ratio:4/3}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-0:#07080B;
  --bg-1:#0E1116;
  --bg-2:#151A22;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#B8FF2E;
  --primary-2:#00E5C0;
  --accent:#FF2E88;
  --text-0:#F2F5F7;
  --text-1:#A7B0BB;
  --text-2:#6B7684;
  --ok:#35D07F;
  --warn:#FFC53D;
  --err:#FF4D6D;
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow:0 18px 48px rgba(0,0,0,.5);
  --shadow-neon:0 0 0 1px var(--primary),0 12px 40px rgba(184,255,46,.18);
  --t-fast:150ms;
  --t-mid:240ms;
  --t-slow:400ms;
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1240px;
}
*,*::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-0);
  font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(28px,6.4vw,56px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(22px,3.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h3{font-size:19px;line-height:1.4;font-weight:600}
p{color:var(--text-1)}
.num,.metric-value,.tl-index,.card-no{font-family:"Chakra Petch","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(184,255,46,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 48px}
.section{padding:104px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head p{margin-top:12px;max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--primary-2);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary-2);display:block}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:transparent;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.btn-primary{background:var(--primary);color:#07080B;border-color:var(--primary)}
.btn-primary:hover{background:#c9ff5c;box-shadow:0 12px 34px rgba(184,255,46,.22);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line-strong);color:var(--text-0)}
.btn-ghost:hover{border-color:var(--primary-2);color:var(--primary-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-xs{height:34px;padding:0 14px;font-size:13px}
.btn-text{height:auto;padding:0;color:var(--primary);font-weight:600}
.btn-text span{display:inline-block;transition:transform var(--t-fast) var(--ease)}
.btn-text:hover span{transform:translateX(4px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,8,11,.92);
  border-bottom:1px solid var(--line);
  transition:background var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease),backdrop-filter var(--t-mid) var(--ease);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary-2),transparent);
}
.site-header.is-scrolled{background:rgba(7,8,11,.72);backdrop-filter:blur(12px);border-color:var(--line-strong)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-0);font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{color:var(--primary);display:inline-flex;filter:drop-shadow(0 0 8px rgba(184,255,46,.35))}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;padding:6px 0;font-size:14px;font-weight:500;color:var(--text-1);
  transition:color var(--t-fast) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;height:2px;width:0;background:var(--primary);
  transform:translateX(-50%);transition:width var(--t-mid) var(--ease);
}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{width:100%;background:var(--primary-2);height:1px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:100%;box-shadow:0 0 10px rgba(184,255,46,.5)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:36px;height:36px;border-radius:var(--radius-btn);border:1px solid var(--line-strong);
  background:transparent;color:var(--text-1);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.icon-btn:hover{color:var(--primary-2);border-color:var(--primary-2)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);background:transparent;cursor:pointer;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:1.6px;background:var(--text-0);transition:transform var(--t-mid) var(--ease),opacity var(--t-fast) var(--ease),background var(--t-fast) var(--ease)}
.burger span:nth-child(1){top:16px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:26px}
.burger.is-open span{background:var(--primary)}
.burger.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity var(--t-mid) var(--ease);z-index:70}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* breadcrumb */
.crumb{padding:26px 0 0;font-size:13px;color:var(--text-2)}
.crumb a{transition:color var(--t-fast) var(--ease)}
.crumb a:hover{color:var(--primary-2)}
.crumb span.sep{margin:0 8px;color:var(--text-2)}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.38}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(60% 60% at 12% 88%,rgba(0,229,192,.16),transparent 70%),
    linear-gradient(180deg,rgba(7,8,11,.72),rgba(7,8,11,.96));
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;padding:88px 0 96px}
.hero h1{margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{max-width:600px;font-size:17px;color:var(--text-1)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:0;margin-top:52px}
.metric{padding:0 26px;border-left:1px solid var(--line-strong)}
.metric:first-child{padding-left:0;border-left:0}
.metric-value{display:block;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.1;color:var(--text-0)}
.metric-value i{font-style:normal;color:var(--primary);font-size:.62em;margin-left:2px}
.metric-label{display:block;margin-top:6px;font-size:13px;color:var(--text-2)}
.hero-visual{position:relative}
.hero-card{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow);aspect-ratio:4/3;background:var(--bg-2);
}
.hero-card img{width:100%;height:100%;object-fit:cover}
.hero-sub{
  position:absolute;right:-14px;bottom:-26px;width:46%;aspect-ratio:1/1;
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow);background:var(--bg-2);
}
.hero-sub img{width:100%;height:100%;object-fit:cover}
.hero-tag{
  position:absolute;left:18px;top:18px;z-index:2;
  background:rgba(7,8,11,.78);border:1px solid var(--line-strong);border-radius:var(--radius-badge);
  padding:6px 12px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--primary-2);
}

/* claim strip */
.claim{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1)}
.claim-inner{display:flex;align-items:center;gap:40px;padding:30px 0;flex-wrap:wrap}
.claim-strong{font-size:18px;font-weight:700;color:var(--text-0);white-space:nowrap}
.claim-list{display:flex;flex-wrap:wrap;gap:32px;margin-left:auto}
.claim-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-1)}
.claim-list li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:8px;height:1px;background:var(--primary)}

/* spec strip */
.spec-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-2)}
.spec{padding:30px 26px;border-left:1px solid var(--line);transition:background var(--t-mid) var(--ease)}
.spec:first-child{border-left:0}
.spec:hover{background:rgba(255,255,255,.03)}
.spec-no{font-family:"Chakra Petch",ui-monospace,monospace;font-size:12px;letter-spacing:.14em;color:var(--primary-2)}
.spec h3{margin:14px 0 8px;font-size:17px}
.spec p{font-size:14px;line-height:1.75}

/* timeline */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:50%;top:6px;bottom:6px;width:1px;background:var(--line-strong);transform:translateX(-50%)}
.tl-item{position:relative;width:50%;padding:0 52px 48px 0}
.tl-item:nth-child(even){margin-left:50%;padding:0 0 48px 52px}
.tl-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:border-color var(--t-mid) var(--ease),transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.tl-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow)}
.tl-card:hover h3{color:var(--primary)}
.tl-card h3{transition:color var(--t-fast) var(--ease)}
.tl-index{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--primary);margin-bottom:10px}
.tl-card p{font-size:14px;line-height:1.8;margin-top:10px}
.tl-thumb{margin-top:16px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:linear-gradient(135deg,#151A22,#0E1116)}
.tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t-mid) var(--ease)}
.tl-card:hover .tl-thumb img{transform:scale(1.04)}
.tl-dot{position:absolute;top:30px;width:11px;height:11px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(184,255,46,.16)}
.tl-item:nth-child(odd) .tl-dot{right:-5.5px}
.tl-item:nth-child(even) .tl-dot{left:-5.5px}

/* audience list */
.audience{margin-top:8px;border-top:1px solid var(--line)}
.audience li{
  display:grid;grid-template-columns:220px 1fr auto;gap:24px;align-items:center;
  min-height:88px;padding:22px 18px;border-bottom:1px solid var(--line);position:relative;
  transition:background var(--t-fast) var(--ease),padding-left var(--t-mid) var(--ease);
}
.audience li::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;background:var(--primary);transform:scaleY(0);transform-origin:center;transition:transform var(--t-mid) var(--ease)}
.audience li:hover{background:rgba(255,255,255,.03);padding-left:26px}
.audience li:hover::before{transform:scaleY(1)}
.audience h3{font-size:17px}
.audience p{font-size:14px;line-height:1.75}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--radius-badge);
  border:1px solid var(--line-strong);background:var(--bg-2);font-size:12px;font-weight:600;color:var(--text-1);
  letter-spacing:.04em;white-space:nowrap;
}
.badge-neon{color:var(--primary-2)}
.badge-accent{color:var(--accent);border-color:rgba(255,46,136,.4);position:relative;padding-left:14px}
.badge-accent::before{content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);width:2px;height:12px;background:var(--accent)}

/* faq */
.faq{display:grid;gap:14px;max-width:900px}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);transition:border-color var(--t-mid) var(--ease),background var(--t-mid) var(--ease)}
.faq-item[open]{border-color:var(--line-strong);background:var(--bg-1)}
.faq-item summary{
  display:flex;align-items:center;gap:14px;padding:20px 24px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text-0);transition:color var(--t-fast) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"?";display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;flex:0 0 22px;border:1px solid var(--primary);border-radius:50%;color:var(--primary);font-size:12px;font-weight:700}
.faq-item summary::after{content:"";width:8px;height:8px;margin-left:auto;border-right:1.6px solid var(--text-2);border-bottom:1.6px solid var(--text-2);transform:rotate(45deg);transition:transform var(--t-mid) var(--ease),border-color var(--t-fast) var(--ease)}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary)}
.faq-item p{padding:0 24px 22px 60px;font-size:15px;line-height:1.85}

/* related + cta */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.related-card{
  display:block;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-2);
  padding:22px;transition:border-color var(--t-mid) var(--ease),transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.related-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow)}
.related-card:hover h3{color:var(--primary)}
.related-card h3{font-size:16px;transition:color var(--t-fast) var(--ease)}
.related-card p{margin-top:8px;font-size:13px;line-height:1.7}
.related-card .arrow{display:inline-block;margin-top:14px;font-size:13px;color:var(--primary-2)}

.cta{position:relative;background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:72px 0}
.cta h2{margin-bottom:12px}
.subscribe{display:flex;gap:12px}
.subscribe input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);background:var(--bg-2);color:var(--text-0);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.subscribe input::placeholder{color:var(--text-2)}
.subscribe input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,255,46,.16)}
.form-msg{margin-top:12px;font-size:13px;color:var(--primary-2);min-height:20px}
.form-msg.is-err{color:var(--err)}

/* footer */
.site-footer{background:#050609;border-top:1px solid var(--line);position:relative}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary-2),transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:14px;line-height:1.8;color:var(--text-2);max-width:300px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--text-0);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);display:inline-block}
.footer-col a:hover{color:var(--primary-2);transform:translateX(2px)}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{width:34px;height:34px;border:1px solid var(--line-strong);border-radius:var(--radius-btn);display:inline-flex;align-items:center;justify-content:center;color:var(--text-1);transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease)}
.socials a:hover{color:var(--primary);border-color:var(--primary)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;font-size:13px;color:var(--text-2)}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1023px){
  .container{padding:0 32px}
  .section{padding:80px 0}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:84vw;max-width:340px;
    background:var(--bg-1);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:92px 24px 32px;transform:translateX(100%);
    transition:transform var(--t-mid) var(--ease);z-index:75;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:15px}
  .nav-link::after{left:0;transform:none;width:3px;height:0;top:10px;bottom:10px}
  .nav-link:hover::after,.nav-link.is-active::after{width:3px;height:auto;bottom:10px}
  .burger{display:inline-block}
  .hero-inner{grid-template-columns:1fr;padding:64px 0 72px;gap:44px}
  .hero-sub{position:static;width:100%;aspect-ratio:16/9;margin-top:16px;right:auto;bottom:auto}
  .spec-strip{grid-template-columns:repeat(2,1fr)}
  .spec:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .spec:nth-child(4){border-top:1px solid var(--line)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:60px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .audience li{grid-template-columns:180px 1fr;gap:18px}
  .audience li .badge{grid-column:2}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:15px}
  .section{padding:64px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:32px}
  .header-inner{height:60px}
  .brand{font-size:15px}
  .hero-lead{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-metrics{gap:22px 0}
  .metric{padding:0 18px;flex:1 1 50%}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .metric-value{font-size:30px}
  .speaker{}
  .spec-strip{grid-template-columns:1fr}
  .spec{border-left:0;border-top:1px solid var(--line);padding:24px 20px}
  .spec:first-child{border-top:0}
  .timeline::before{left:7px;transform:none}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding:0 0 32px 30px}
  .tl-item:nth-child(odd) .tl-dot,.tl-item:nth-child(even) .tl-dot{left:2px;right:auto;top:26px}
  .tl-card{padding:20px}
  .audience li{grid-template-columns:1fr;gap:8px;padding:20px 14px}
  .audience li .badge{grid-column:auto}
  .related-grid{grid-template-columns:1fr}
  .faq-item p{padding:0 20px 20px 20px}
  .subscribe{flex-direction:column}
  .subscribe .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column}
  .tl-thumb{aspect-ratio:16/9}
}
@media (max-width:480px){
  .hero-bg{display:none}
  .hero-inner{padding:48px 0 56px;background:linear-gradient(180deg,#0E1116,#07080B)}
  .claim-list{margin-left:0;gap:18px}
  .hero-sub{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --bg-0:#07080B;
  --bg-1:#0E1116;
  --bg-2:#151A22;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#B8FF2E;
  --primary-2:#00E5C0;
  --accent:#FF2E88;
  --text-0:#F2F5F7;
  --text-1:#A7B0BB;
  --text-2:#6B7684;
  --ok:#35D07F;
  --warn:#FFC53D;
  --err:#FF4D6D;
  --r-card:14px;
  --r-lg:18px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow:0 18px 48px rgba(0,0,0,.5);
  --shadow-neon:0 0 0 1px var(--primary),0 12px 40px rgba(184,255,46,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --mono:"Chakra Petch","Space Grotesk",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-0);
  font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,8,11,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary-2),transparent);
}
.site-header.is-scrolled{background:rgba(7,8,11,.97);border-bottom-color:var(--line-strong)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{color:var(--primary);display:inline-flex;align-items:center}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;
  font-size:14px;font-weight:500;color:var(--text-1);
  padding:6px 2px;
  transition:color .15s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:1px;
  background:var(--primary-2);
  transition:left .24s var(--ease),right .24s var(--ease);
}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  left:0;right:0;height:2px;background:var(--primary);
  box-shadow:0 0 10px rgba(184,255,46,.55);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:36px;height:36px;display:grid;place-items:center;
  border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:transparent;color:var(--text-1);cursor:pointer;
  transition:border-color .15s var(--ease),color .15s var(--ease);
}
.icon-btn:hover{border-color:var(--primary-2);color:var(--primary-2)}
.nav-toggle{display:none}
.nav-toggle span{display:block;width:18px;height:1.6px;background:currentColor;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle span+span{margin-top:4px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:340px;z-index:80;
  background:var(--bg-1);border-left:1px solid var(--line-strong);
  padding:88px 24px 32px;
  transform:translateX(102%);transition:transform .24s var(--ease);
  display:flex;flex-direction:column;gap:6px;
}
.drawer.is-open{transform:translateX(0)}
.drawer .nav-link{
  padding:14px 16px;border-radius:var(--r-btn);font-size:15px;
}
.drawer .nav-link::after{display:none}
.drawer .nav-link.is-active{background:rgba(184,255,46,.07);box-shadow:inset 3px 0 0 var(--primary)}
.drawer .btn{margin-top:16px;width:100%;justify-content:center}
.overlay{
  position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.overlay.is-open{opacity:1;visibility:visible}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .15s var(--ease),background .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease),box-shadow .24s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#07080B}
.btn-primary:hover{background:#c6ff4d;transform:translateY(-1px);box-shadow:var(--shadow-neon)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-0)}
.btn-ghost:hover{border-color:var(--primary-2);color:var(--primary-2);transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--text-1);
  transition:color .15s var(--ease);
}
.link-arrow svg{transition:transform .24s var(--ease)}
.link-arrow:hover{color:var(--primary)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);
  background:var(--bg-2);border:1px solid var(--line-strong);
  font-size:12px;line-height:1.4;font-weight:600;color:var(--text-1);
  letter-spacing:.04em;
}
.badge-cat{color:var(--primary-2)}
.badge-live{color:var(--accent);border-color:rgba(255,46,136,.4);position:relative;padding-left:16px}
.badge-live::before{
  content:"";position:absolute;left:8px;top:50%;width:2px;height:12px;
  margin-top:-6px;background:var(--accent);border-radius:2px;
}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--primary-2);text-transform:uppercase;
}
.kicker::before{content:"";width:22px;height:1px;background:var(--primary-2)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.36;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(58% 62% at 8% 92%,rgba(0,229,192,.16),transparent 68%),
    radial-gradient(46% 50% at 92% 6%,rgba(255,46,136,.10),transparent 70%),
    linear-gradient(180deg,rgba(7,8,11,.62),rgba(7,8,11,.96));
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;padding:88px 0 96px}
.hero h1{
  font-size:clamp(28px,6.4vw,56px);line-height:1.1;font-weight:800;
  letter-spacing:-.02em;margin:18px 0 16px;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{font-size:17px;color:var(--text-1);max-width:34em;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 38px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);padding-top:24px}
.hero-stats div{
  padding:0 26px;
  border-left:1px solid var(--line);
}
.hero-stats div:first-child{padding-left:0;border-left:0}
.stat-num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,4vw,42px);font-weight:700;color:var(--primary);
  line-height:1.15;letter-spacing:-.02em;
}
.stat-num small{font-size:15px;color:var(--text-1);margin-left:3px;font-weight:600}
.stat-label{font-size:13px;color:var(--text-2);margin-top:4px}
.hero-visual{position:relative}
.hero-card-lg{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  aspect-ratio:4/3;background:linear-gradient(140deg,#151A22,#0E1116);
}
.hero-card-lg img{width:100%;height:100%;object-fit:cover}
.hero-card-lg .cap{
  position:absolute;left:0;right:0;bottom:0;padding:20px;
  background:linear-gradient(180deg,transparent,rgba(7,8,11,.92));
}
.hero-card-lg .cap strong{display:block;font-size:16px;margin-bottom:4px}
.hero-card-lg .cap span{font-size:13px;color:var(--text-1)}
.hero-card-sm{
  position:absolute;right:-18px;bottom:-26px;width:52%;
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  aspect-ratio:4/3;background:var(--bg-2);
}
.hero-card-sm img{width:100%;height:100%;object-fit:cover}

/* ---------- filter pills ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.filter-bar .pill{
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--bg-1);
  font-size:13px;color:var(--text-1);cursor:default;
  transition:border-color .15s var(--ease),color .15s var(--ease),background .15s var(--ease);
}
.filter-bar .pill:hover{border-color:var(--primary-2);color:var(--primary-2)}
.filter-bar .pill.is-on{background:rgba(184,255,46,.08);border-color:rgb(184 255 46 / .5);color:var(--primary)}
.filter-note{margin-left:auto;font-size:12px;color:var(--text-2);letter-spacing:.06em}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head h2{font-size:clamp(22px,3.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;margin-top:12px}
.sec-intro{color:var(--text-1);font-size:15px;max-width:44em;margin-top:12px}
.sec-head--stack{display:block}

/* ---------- board 大图双列 ---------- */
.board-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:40px;align-items:start}
.board-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line-strong);box-shadow:var(--shadow);
  aspect-ratio:4/3;background:linear-gradient(140deg,#151A22,#0E1116);
}
.board-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.board-figure:hover img{transform:scale(1.04)}
.board-figure .tag-top{position:absolute;top:16px;left:16px;display:flex;gap:8px}
.board-figure .board-cap{
  position:absolute;left:0;right:0;bottom:0;padding:24px;
  background:linear-gradient(180deg,transparent,rgba(7,8,11,.94));
}
.board-cap h3{font-size:19px;font-weight:600;margin-bottom:6px}
.board-cap p{font-size:13px;color:var(--text-1);line-height:1.7}
.board-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:14px;font-size:12px;color:var(--text-2);font-family:var(--mono)}
.board-side h3{font-size:14px;font-weight:600;color:var(--text-2);letter-spacing:.1em;margin-bottom:8px}
.board-list li{position:relative;padding:18px 0 18px 16px;border-bottom:1px solid var(--line);transition:background .15s var(--ease)}
.board-list li::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;
  background:var(--primary);border-radius:2px;
  transform:scaleY(0);transform-origin:top;
  transition:transform .24s var(--ease);
}
.board-list li:hover{background:rgba(255,255,255,.03)}
.board-list li:hover::before{transform:scaleY(1)}
.board-item-top{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-2);font-family:var(--mono);margin-bottom:6px}
.board-item-top .vs{color:var(--primary-2)}
.board-item-title{font-size:16px;font-weight:600;line-height:1.5;transition:color .15s var(--ease)}
.board-list li:hover .board-item-title{color:var(--primary)}
.board-item-desc{font-size:13px;color:var(--text-1);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.card h3{font-size:18px;font-weight:600;line-height:1.45;margin:14px 0 10px;transition:color .24s var(--ease)}
.card:hover h3{color:var(--primary)}
.card p{font-size:14px;color:var(--text-1);line-height:1.8}
.card-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary-2);
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.card:hover .card-icon{border-color:var(--primary);color:var(--primary)}
.card-num{
  font-family:var(--mono);font-size:13px;color:var(--text-2);letter-spacing:.16em;
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{
  position:relative;padding:28px 24px 26px;border:1px solid var(--line);
  border-radius:var(--r-card);background:var(--bg-1);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.step:hover{border-color:var(--line-strong);background:var(--bg-2)}
.step-index{
  font-family:var(--mono);font-size:34px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);
  margin-bottom:16px;transition:-webkit-text-stroke-color .24s var(--ease);
}
.step:hover .step-index{-webkit-text-stroke-color:var(--primary)}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-1)}
.step::after{
  content:"";position:absolute;right:-13px;top:calc(50% - 1px);width:14px;height:1px;
  background:var(--line-strong);
}
.step:last-child::after{display:none}

/* ---------- metric strip ---------- */
.metric-strip{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.metric-strip .inner{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
}
.metric{padding:34px 26px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0;padding-left:0}
.metric strong{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.4vw,38px);font-weight:700;color:var(--primary);line-height:1.2;
}
.metric span{display:block;font-size:13px;color:var(--text-1);margin-top:6px}

/* ---------- faq ---------- */
.faq{max-width:880px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-1);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item[open]{border-color:var(--line-strong);background:var(--bg-2)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px 20px 48px;
  font-size:16px;font-weight:600;line-height:1.6;
  transition:color .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"?";position:absolute;left:22px;top:50%;transform:translateY(-50%);
  font-family:var(--mono);font-size:15px;font-weight:700;color:var(--primary);
}
.faq-item summary::after{
  content:"";width:8px;height:8px;flex:0 0 8px;
  border-right:1.6px solid var(--text-2);border-bottom:1.6px solid var(--text-2);
  transform:rotate(45deg);transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary)}
.faq-item[open] summary{border-right:2px solid transparent}
.faq-body{padding:0 24px 22px 48px;font-size:15px;color:var(--text-1);line-height:1.85}

/* ---------- cta ---------- */
.cta-band{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.cta-inner{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:40px;align-items:center;padding:64px 0}
.cta-inner h2{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.cta-inner p{color:var(--text-1);font-size:15px;margin-top:12px}
.cta-form{display:flex;gap:12px}
.cta-form input{
  flex:1;height:48px;padding:0 18px;border-radius:var(--r-btn);
  background:var(--bg-2);border:1px solid var(--line-strong);
  font-size:14px;transition:border-color .15s var(--ease),box-shadow .24s var(--ease);
}
.cta-form input::placeholder{color:var(--text-2)}
.cta-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,255,46,.14);outline:none}
.form-note{font-size:13px;color:var(--text-2);margin-top:12px;min-height:20px}
.form-note.ok{color:var(--ok)}
.form-note.err{color:var(--err)}

/* ---------- related categories ---------- */
.related{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.related a{
  display:block;padding:22px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--bg-1);transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.related a:hover{border-color:var(--primary-2);transform:translateY(-2px);background:var(--bg-2)}
.related a span{display:block;font-size:12px;color:var(--text-2);font-family:var(--mono);letter-spacing:.1em;margin-bottom:10px}
.related a strong{display:block;font-size:16px;font-weight:600;line-height:1.5}
.related a em{display:block;font-style:normal;font-size:13px;color:var(--text-1);margin-top:8px}
.related a.is-current{border-color:rgba(184,255,46,.45);background:rgba(184,255,46,.05)}
.related a.is-current strong{color:var(--primary)}

/* ---------- footer ---------- */
.site-footer{background:#05060A;border-top:1px solid var(--line);position:relative;margin-top:0}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary-2),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.6fr));
  gap:40px;padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--primary);margin-bottom:14px}
.footer-brand strong{color:var(--text-0);font-size:16px;font-weight:700}
.footer-about{font-size:13.5px;color:var(--text-1);max-width:32em;line-height:1.8}
.footer-col h3{font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--text-2);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-1);transition:color .15s var(--ease),transform .15s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--primary-2);transform:translateX(2px)}
.socials{display:flex;gap:10px;margin-top:16px}
.socials a{
  width:34px;height:34px;display:grid;place-items:center;
  border:1px solid var(--line-strong);border-radius:10px;color:var(--text-1);
  transition:border-color .15s var(--ease),color .15s var(--ease);
}
.socials a:hover{border-color:var(--primary-2);color:var(--primary-2)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-2);
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--primary-2)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .hero-inner{gap:36px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:grid}
  .section{padding:76px 0}
  .hero-inner{grid-template-columns:1fr;padding:64px 0 76px}
  .hero-card-sm{position:static;width:100%;margin-top:16px;right:auto;bottom:auto}
  .grid-4,.related{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step::after{display:none}
  .board-grid{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;padding:56px 0}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;padding:52px 0 36px}
  .metric-strip .inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric{border-left:0;border-top:1px solid var(--line);padding:26px 0}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0}
  .metric:nth-child(even){padding-left:24px;border-left:1px solid var(--line)}
}
@media (max-width:767px){
  body{font-size:15px}
  .container{padding:0 20px}
  .header-inner{height:60px}
  .brand-text{font-size:15px}
  .section{padding:64px 0}
  .hero-actions .btn{width:100%}
  .hero-stats div{padding:0 16px}
  .stat-num{font-size:28px}
  .grid-3,.grid-4,.steps,.related{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .metric:nth-child(even){padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .metric{padding:22px 0}
  .filter-note{margin-left:0;width:100%}
  .faq-item summary{padding:18px 18px 18px 44px;font-size:15px}
  .faq-body{padding:0 18px 20px 44px}
  .board-figure{border-radius:var(--r-card)}
}
@media (max-width:480px){
  .hero-bg{opacity:.24}
  .hero-card-sm{display:none}
  .badge{font-size:11px}
  .stat-num small{display:block;margin:2px 0 0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-0:#07080B;
  --bg-1:#0E1116;
  --bg-2:#151A22;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#B8FF2E;
  --primary-2:#00E5C0;
  --accent:#FF2E88;
  --text-0:#F2F5F7;
  --text-1:#A7B0BB;
  --text-2:#6B7684;
  --ok:#35D07F;
  --warn:#FFC53D;
  --err:#FF4D6D;
  --radius-s:6px;
  --radius-m:10px;
  --radius-c:14px;
  --radius-l:18px;
  --shadow:0 18px 48px rgba(0,0,0,.5);
  --glow:0 0 0 1px var(--primary),0 12px 40px rgba(184,255,46,.18);
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Chakra Petch","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{max-width:1240px;margin:0 auto;padding:0 48px;width:100%}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.topline{height:1px;background:linear-gradient(90deg,transparent,var(--primary-2),transparent)}
.site-header{position:sticky;top:0;z-index:60;background:rgba(7,8,11,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(12px);transition:border-color .24s var(--ease),background .24s var(--ease)}
.site-header.is-scrolled{border-bottom-color:var(--line-strong);background:rgba(7,8,11,.97)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:.01em;white-space:nowrap}
.brand-mark{display:inline-flex;color:var(--primary)}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:14px;font-weight:500;color:var(--text-1);padding:8px 0;transition:color .15s var(--ease)}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:2px;height:1px;background:var(--primary-2);transition:left .24s var(--ease),right .24s var(--ease)}
.nav-link:hover{color:var(--text-0)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--primary);text-shadow:0 0 14px rgba(184,255,46,.4)}
.nav-link.is-active::after{left:0;right:0;height:2px;background:var(--primary)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.icon-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-m);border:1px solid var(--line);background:transparent;color:var(--text-1);cursor:pointer;transition:border-color .15s var(--ease),color .15s var(--ease)}
.icon-btn:hover{border-color:var(--primary-2);color:var(--primary-2)}
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;border-radius:var(--radius-m);border:1px solid var(--line);background:transparent;cursor:pointer}
.nav-toggle span{display:block;height:2px;width:18px;margin:0 auto;background:var(--text-0);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:70}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.nav-drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:var(--bg-1);border-left:1px solid var(--line-strong);transform:translateX(100%);transition:transform .24s var(--ease);z-index:80;display:flex;flex-direction:column;padding:22px 20px;gap:6px;overflow-y:auto}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:10px}
.drawer-head strong{font-size:15px}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:14px 12px;border-left:3px solid transparent;color:var(--text-1);font-size:15px;transition:background .15s var(--ease),color .15s var(--ease),border-color .15s var(--ease)}
.drawer-nav a:hover{background:rgba(255,255,255,.03);color:var(--text-0)}
.drawer-nav a.is-active{border-left-color:var(--primary);color:var(--primary)}
.drawer-cta{margin-top:auto;padding-top:20px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-m);font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .15s var(--ease),filter .15s var(--ease),border-color .15s var(--ease),color .15s var(--ease),box-shadow .15s var(--ease);white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#07080B}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 32px rgba(184,255,46,.2)}
.btn-ghost{border-color:var(--line-strong);color:var(--text-0);background:transparent}
.btn-ghost:hover{border-color:var(--primary-2);color:var(--primary-2)}
.btn-sm{height:36px;padding:0 16px;font-size:13px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:6px 10px;border-radius:var(--radius-s);background:var(--bg-2);border:1px solid var(--line-strong);color:var(--primary-2);letter-spacing:.04em}
.tag-new{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--accent)}
.tag-new::before{content:"";width:2px;height:12px;background:var(--accent);border-radius:2px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:104px 0 120px;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;background-repeat:no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(620px 320px at 10% 90%,rgba(0,229,192,.12),transparent 70%),
  linear-gradient(180deg,rgba(7,8,11,.74),rgba(7,8,11,.95) 80%)}
.hero-inner{position:relative;z-index:2;max-width:800px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);margin-bottom:22px}
.breadcrumb a:hover{color:var(--primary-2)}
.breadcrumb span[aria-current]{color:var(--text-1)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--primary-2);margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--primary-2)}
.hero h1{font-size:clamp(28px,6.4vw,56px);line-height:1.1;font-weight:800;letter-spacing:-.02em}
.hero-sub{margin-top:18px;font-size:clamp(16px,2vw,20px);color:var(--primary);font-weight:600;letter-spacing:.02em}
.hero-text{margin-top:16px;max-width:720px;color:var(--text-1);font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- metrics ---------- */
.metrics-wrap{position:relative;z-index:3;margin-top:-64px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-c);padding:26px 24px;box-shadow:var(--shadow);transition:border-color .24s var(--ease),transform .24s var(--ease)}
.metric:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.metric-value{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1;color:var(--primary);letter-spacing:-.01em}
.metric-label{margin-top:12px;font-size:13px;color:var(--text-1)}
.metric-line{margin-top:16px;height:1px;background:linear-gradient(90deg,var(--primary-2),transparent)}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,3.6vw,34px);line-height:1.25;font-weight:700}
.section-head p{margin-top:12px;max-width:640px;color:var(--text-1);font-size:15px}
.section-head .head-link{font-size:14px;color:var(--primary-2);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.section-head .head-link:hover{color:var(--primary)}

/* ---------- panels 2x2 ---------- */
.panel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.panel-card{position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-c);padding:30px 28px;transition:border-color .24s var(--ease),transform .24s var(--ease)}
.panel-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.panel-card .idx{font-family:var(--font-num);font-size:12px;letter-spacing:.12em;color:var(--primary);display:block;margin-bottom:14px}
.panel-card h3{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:12px;transition:color .24s var(--ease)}
.panel-card:hover h3{color:var(--primary)}
.panel-card p{font-size:15px;color:var(--text-1)}
.panel-card::after{content:"";position:absolute;right:28px;top:30px;width:34px;height:1px;background:linear-gradient(90deg,var(--primary-2),transparent)}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-step{position:relative;padding-top:26px;border-top:1px solid var(--line)}
.flow-step::before{content:"";position:absolute;top:-4px;left:0;width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 3px rgba(184,255,46,.14)}
.step-num{font-family:var(--font-num);font-size:13px;letter-spacing:.12em;color:var(--text-2)}
.step-title{margin-top:8px;font-size:17px;font-weight:600}
.step-text{margin-top:10px;font-size:14px;color:var(--text-1)}

/* ---------- showcase ---------- */
.showcase{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.media-frame{position:relative;border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line-strong);aspect-ratio:16/10;background:linear-gradient(135deg,#151A22,#0E1116)}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.media-frame:hover img{transform:scale(1.04)}
.media-frame .media-cap{position:absolute;left:0;right:0;bottom:0;padding:26px 24px;background:linear-gradient(180deg,transparent,rgba(7,8,11,.92));font-size:14px;color:var(--text-1)}
.media-frame .media-cap strong{display:block;font-size:16px;color:var(--text-0);margin-bottom:6px}
.showcase-list{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-c);padding:10px 24px}
.list-item{position:relative;display:block;padding:22px 6px 22px 14px;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:none}
.list-item::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:2px;background:var(--primary);opacity:0;transform:translateX(-4px);transition:opacity .2s var(--ease),transform .2s var(--ease)}
.list-item:hover{background:rgba(255,255,255,.03)}
.list-item:hover::before{opacity:1;transform:none}
.list-title{font-size:16px;font-weight:600;transition:color .2s var(--ease)}
.list-item:hover .list-title{color:var(--primary)}
.list-text{margin-top:8px;font-size:14px;color:var(--text-1)}

/* ---------- scene bar ---------- */
.scene-bar{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background-image:url("/assets/images/backpic/back-3.png");background-size:cover;background-position:center;position:relative}
.scene-bar::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,8,11,.9),rgba(7,8,11,.96))}
.scene-inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,1fr);gap:0;padding:56px 0}
.scene-item{padding:12px 32px;border-left:1px solid var(--line-strong)}
.scene-item:first-child{border-left:none;padding-left:0}
.scene-item h3{font-size:17px;font-weight:600;margin-bottom:10px}
.scene-item p{font-size:14px;color:var(--text-1)}
.scene-item h3 span{font-family:var(--font-num);color:var(--primary);margin-right:8px;font-size:13px}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px}
.faq{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-c);margin-bottom:12px;overflow:hidden;transition:border-color .24s var(--ease)}
.faq:hover{border-color:var(--line-strong)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:20px 24px;font-size:16px;font-weight:600;transition:color .24s var(--ease)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"?";display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;flex:0 0 22px;border-radius:var(--radius-s);border:1px solid var(--primary);color:var(--primary);font-size:12px;font-family:var(--font-num)}
.faq .arrow{margin-left:auto;width:10px;height:10px;border-right:1px solid var(--text-2);border-bottom:1px solid var(--text-2);transform:rotate(45deg);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.faq[open] summary{color:var(--primary)}
.faq[open] .arrow{transform:rotate(-135deg);border-color:var(--primary)}
.faq .answer{padding:0 24px 24px 60px;color:var(--text-1);font-size:15px;max-width:780px}

/* ---------- CTA ---------- */
.cta-band{position:relative;background:var(--bg-1);border-top:1px solid transparent;overflow:hidden}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent)}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;padding:76px 0}
.cta-inner h2{font-size:clamp(22px,3.4vw,32px);font-weight:700;line-height:1.25}
.cta-inner .cta-desc{margin-top:14px;color:var(--text-1);font-size:15px;max-width:520px}
.cta-form{display:flex;gap:12px}
.input{flex:1;height:44px;padding:0 16px;border-radius:var(--radius-m);border:1px solid var(--line-strong);background:var(--bg-2);color:var(--text-0);transition:border-color .15s var(--ease),box-shadow .15s var(--ease)}
.input::placeholder{color:var(--text-2)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,255,46,.16)}
.form-note{margin-top:12px;font-size:13px;min-height:20px;color:var(--text-2)}
.form-note.is-ok{color:var(--ok)}
.form-note.is-err{color:var(--err)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid transparent;position:relative;padding:72px 0 28px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary-2),transparent)}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{font-size:16px}
.footer-brand .brand-mark{color:var(--primary)}
.footer-about{font-size:14px;color:var(--text-1);max-width:300px}
.footer-col h3{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--text-0);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--text-1);transition:color .15s var(--ease),transform .15s var(--ease);display:inline-block}
.footer-col li a:hover{color:var(--primary-2);transform:translateX(2px)}
.socials{display:flex;gap:10px;margin-top:18px}
.socials a{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:var(--radius-m);color:var(--text-1);transition:border-color .15s var(--ease),color .15s var(--ease)}
.socials a:hover{border-color:var(--primary-2);color:var(--primary-2)}
.footer-bottom{margin-top:52px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-2)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 40px}
}
@media (max-width:1023px){
  .container{padding:0 32px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .hero{padding:80px 0 104px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .panel-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr);row-gap:32px}
  .showcase{grid-template-columns:1fr}
  .scene-inner{grid-template-columns:1fr;gap:28px;padding:48px 0}
  .scene-item{border-left:none;padding:0 0 0 16px;border-left:2px solid var(--line-strong)}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .header-inner{height:60px}
  .brand span.brand-text{font-size:15px}
  .section{padding:64px 0}
  .hero{padding:64px 0 92px}
  .hero-text{font-size:15px}
  .hero-actions .btn{width:100%}
  .metrics-wrap{margin-top:-52px}
  .metrics{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .faq summary{padding:18px 18px;font-size:15px}
  .faq .answer{padding:0 18px 20px 50px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:480px){
  .scene-bar{background-image:none}
  .metric::after{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}