/* roulang page: index */
:root{
  --c-main:#12E1A8;
  --c-main-deep:#0FB98C;
  --c-accent:#FF3E8E;
  --c-bridge:#7C5CFF;
  --bg-dark:#0C0E11;
  --bg-panel:#14171C;
  --bg-line:#23262C;
  --bg-light:#F5F4F0;
  --bg-white:#FFFFFF;
  --tx-dark:#0B0D10;
  --tx-dark-2:#6B7280;
  --tx-light:#EDEDEA;
  --tx-light-2:#8A8F98;
  --line-light:rgba(11,13,16,.08);
  --line-dark:rgba(255,255,255,.07);
  --r-panel:20px;
  --r-card:14px;
  --r-sm:12px;
  --r-badge:6px;
  --sh-light:0 1px 2px rgba(11,13,16,.04),0 12px 32px -12px rgba(11,13,16,.12);
  --sh-light-lg:0 1px 2px rgba(11,13,16,.05),0 22px 48px -18px rgba(11,13,16,.2);
  --container:1240px;
  --sec:112px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx-dark);
  background:var(--bg-light);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.01em}
:focus-visible{outline:2px solid var(--c-main);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container-wide{max-width:1360px}
.section{padding:var(--sec) 0}
.section-light{background:var(--bg-light)}
.section-white{background:var(--bg-white)}
.section-dark{background:var(--bg-dark);color:var(--tx-light)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:14px 0;
  background:linear-gradient(180deg,rgba(12,14,17,.95),rgba(12,14,17,.72));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-panel{
  display:flex;align-items:center;gap:14px;
  background:var(--bg-panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-panel);
  padding:10px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 10px 4px 6px;flex:0 0 auto}
.brand-mark{width:8px;height:8px;border-radius:2px;background:var(--c-main);box-shadow:0 0 12px rgba(18,225,168,.7)}
.brand-name{font-size:16px;font-weight:700;letter-spacing:-.02em;color:var(--tx-light);white-space:nowrap}
.nav-cards{display:flex;gap:6px;flex:1 1 auto;justify-content:center}
.nav-card{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:13px;color:var(--tx-light-2);
  border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s;
  white-space:nowrap;
}
.nav-card .ico{width:20px;height:20px;flex:0 0 20px;color:currentColor;transition:transform .2s}
.nav-card:hover{background:rgba(255,255,255,.06);color:var(--tx-light)}
.nav-card:hover .ico{transform:scale(1.06)}
.nav-card.is-active{color:var(--c-main);border-color:var(--c-main);background:rgba(18,225,168,.07)}
.nav-card.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-main)}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;margin-left:auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--line-dark);color:var(--tx-light);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:16px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s,color .18s,border-color .18s;
  white-space:nowrap;
}
.btn-primary{background:var(--c-main);color:#0C0E11}
.btn-primary:hover{background:var(--c-main-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:rgba(255,255,255,.18);color:var(--tx-light);background:transparent}
.btn-outline:hover{border-color:var(--c-main);color:var(--c-main);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--c-main);padding:0 6px;height:auto}
.btn-ghost:hover{color:var(--c-main-deep)}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sm{height:36px;padding:0 14px;font-size:13px}
.btn-shine{position:relative;overflow:hidden}
.btn-shine::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:40%;
  background:linear-gradient(90deg,transparent,var(--c-main),transparent);
  animation:shine 2.6s linear infinite;
}
@keyframes shine{0%{transform:translateX(-100%)}100%{transform:translateX(360%)}}

/* ---------- 通用排版 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border-radius:var(--r-badge);
  font-size:12px;line-height:1;letter-spacing:.04em;
  background:rgba(18,225,168,.12);color:var(--c-main);
}
.badge-accent{background:rgba(255,62,142,.12);color:var(--c-accent)}
.badge-dark{background:rgba(255,255,255,.08);color:var(--tx-light)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;border-bottom:1px solid var(--line-light)}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.2;letter-spacing:-.02em}
.sec-head .sec-desc{margin-top:10px;font-size:14px;color:var(--tx-dark-2);max-width:620px}
.sec-head-dark{border-bottom-color:var(--line-dark)}
.sec-head-dark h2{color:var(--tx-light)}
.sec-head-dark .sec-desc{color:var(--tx-light-2)}
.more-link{font-size:14px;font-weight:600;color:var(--c-main);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.more-link:hover{color:var(--c-main-deep)}
.line-title{display:flex;align-items:center;gap:14px}
.line-title::after{content:"";flex:1 1 auto;height:1px;background:var(--line-light)}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--bg-dark);color:var(--tx-light);
  padding:72px 0 96px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 380px at 12% 6%,rgba(18,225,168,.16),transparent 70%),
    radial-gradient(560px 320px at 92% 88%,rgba(255,62,142,.12),transparent 72%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  font-size:12.5px;letter-spacing:.05em;color:var(--c-main);
  background:rgba(18,225,168,.1);border:1px solid rgba(18,225,168,.28);
}
.hero h1{
  margin-top:22px;
  font-size:clamp(2.2rem,5.6vw,4.4rem);
  line-height:1.06;letter-spacing:-.03em;font-weight:800;
}
.hero h1 em{font-style:normal;color:var(--c-main)}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.7;color:var(--tx-light-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px}
.hero-point{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--tx-light-2)}
.hero-point i{width:8px;height:8px;border-radius:2px;background:var(--c-main);display:block}
.hero-visual{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line-dark);aspect-ratio:4/3;background:#101317;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(12,14,17,.78) 0%,rgba(12,14,17,.18) 48%,rgba(12,14,17,0) 100%);
}
.hero-noise{
  position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(/%23n)'/%3E%3C/svg%3E");
}
.hero-corner{
  position:absolute;right:18px;bottom:16px;z-index:2;
  font-size:12px;letter-spacing:.14em;color:rgba(237,237,234,.72);
  padding:6px 12px;border-radius:var(--r-badge);
  background:rgba(12,14,17,.42);border:1px solid rgba(255,255,255,.12);
}
.hero-strip{
  position:relative;display:flex;flex-wrap:wrap;gap:16px;margin-top:64px;
  padding-top:26px;border-top:1px solid var(--line-dark);
}
.hero-strip span{font-size:13px;color:var(--tx-light-2)}
.hero-strip b{color:var(--tx-light);font-weight:600}

/* ---------- 玩法 ---------- */
.play-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;margin-top:56px}
.outline-num{
  display:block;font-size:5rem;line-height:1;font-weight:800;letter-spacing:-.04em;
  color:rgba(18,225,168,.14);-webkit-text-stroke:2px rgba(18,225,168,.3);
}
.play-label{margin-top:14px;font-size:14px;color:var(--tx-dark-2);max-width:220px}
.step-row{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:24px 0;border-top:1px solid var(--line-light);
  transition:transform .25s var(--ease),border-color .25s;
}
.step-row:last-child{border-bottom:1px solid var(--line-light)}
.step-row:hover{transform:translateX(4px);border-top-color:var(--c-main)}
.step-num{font-size:13px;font-weight:700;color:var(--c-main);letter-spacing:.06em}
.step-row h3{font-size:1.125rem;line-height:1.4;font-weight:700}
.step-row p{margin-top:8px;font-size:15px;color:var(--tx-dark-2)}

/* ---------- 奖励卡片横滑 ---------- */
.reward-band{background:var(--bg-dark);color:var(--tx-light);position:relative}
.reward-scroller{
  display:flex;gap:20px;overflow-x:auto;padding:36px 4px 28px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.reward-scroller::-webkit-scrollbar{display:none}
.reward-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--bg-panel);border:1px solid var(--line-dark);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s,border-color .25s;
}
.reward-card:hover{transform:translateY(-4px);border-color:rgba(18,225,168,.32);box-shadow:0 18px 40px -22px rgba(0,0,0,.9)}
.reward-cover{position:relative;aspect-ratio:4/3;overflow:hidden;background:#101317}
.reward-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.reward-card:hover .reward-cover img{transform:scale(1.04)}
.reward-cover::after{
  content:"";position:absolute;top:0;left:-60%;width:38%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.26),transparent);
  transform:skewX(-18deg);transition:left .6s var(--ease);
}
.reward-card:hover .reward-cover::after{left:135%}
.reward-tag{position:absolute;top:12px;left:12px;z-index:2}
.reward-body{padding:18px 20px 22px}
.reward-body h3{font-size:1.05rem;font-weight:700}
.reward-body p{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--tx-light-2)}
.reward-progress{margin-top:18px;height:6px;border-radius:3px;background:var(--bg-line);overflow:hidden}
.reward-progress i{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg,var(--c-main),rgba(124,92,255,.9) 72%,var(--c-accent))}
.reward-foot{display:flex;justify-content:space-between;margin-top:10px;font-size:12px;color:var(--tx-light-2)}
.swipe-hint{margin-top:4px;font-size:12.5px;color:var(--tx-light-2)}

/* ---------- 进度带 ---------- */
.progress-band{
  background:var(--bg-dark);color:var(--tx-light);padding:var(--sec) 0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:44px 44px;
}
.pbar-row{display:grid;grid-template-columns:200px 1fr 70px;gap:22px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line-dark)}
.pbar-name{font-size:14.5px;font-weight:600}
.pbar-track{height:8px;border-radius:4px;background:var(--bg-line);overflow:hidden}
.pbar-fill{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--c-main),rgba(124,92,255,.9) 70%,var(--c-accent));transition:width .8s var(--ease)}
.pbar-row.is-active .pbar-fill{animation:breathe 2.6s ease-in-out infinite}
.pbar-row.is-done .pbar-name{color:var(--c-main)}
.pbar-row.is-done .pbar-name::before{content:"✓";margin-right:8px;color:var(--c-main)}
.pbar-row.is-idle .pbar-fill{background:#3A3F47}
.pbar-value{font-size:13px;text-align:right;color:var(--tx-light-2)}
.pbar-row.is-done .pbar-value{color:var(--c-main)}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.66}}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.tl-item{padding:20px 0 0;border-top:2px solid var(--bg-line)}
.tl-item.is-on{border-top-color:var(--c-main)}
.tl-item span{font-size:12px;letter-spacing:.08em;color:var(--tx-light-2)}
.tl-item h3{margin-top:8px;font-size:1rem;font-weight:700}
.tl-item p{margin-top:6px;font-size:13.5px;color:var(--tx-light-2)}

/* ---------- 反馈摘录 ---------- */
.feedback-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:46px}
.feedback-card{
  background:var(--bg-white);border:1px solid var(--line-light);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-light);transition:transform .25s var(--ease),box-shadow .25s;
}
.feedback-card:hover{transform:translateY(-4px);box-shadow:var(--sh-light-lg)}
.rating{display:flex;gap:5px;margin-bottom:14px}
.rating i{width:16px;height:6px;border-radius:2px;background:var(--c-main)}
.rating i.off{background:rgba(11,13,16,.12)}
.feedback-card p{font-size:15px;line-height:1.8;color:var(--tx-dark)}
.feedback-who{margin-top:18px;padding-top:16px;border-top:1px solid var(--line-light);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--tx-dark-2)}

/* ---------- 最新信息列表 ---------- */
.news-list{margin-top:8px}
.news-row{
  display:grid;grid-template-columns:1fr 300px;gap:24px;align-items:center;
  padding:24px 16px;border-bottom:1px solid var(--line-light);
  transition:background .2s,transform .2s var(--ease);
}
.news-row:hover{background:rgba(18,225,168,.05);transform:translateX(4px)}
.news-title{font-size:20px;font-weight:600;line-height:1.45}
.news-sum{margin-top:8px;font-size:14px;color:var(--tx-dark-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:flex-end;gap:14px;font-size:12px;color:var(--tx-dark-2)}
.news-arrow{color:var(--c-main);font-size:16px}
.empty-state{
  margin-top:24px;padding:48px 24px;text-align:center;
  border:1px dashed rgba(18,225,168,.45);border-radius:var(--r-card);
  background:rgba(18,225,168,.03);
}
.empty-state svg{width:48px;height:48px;color:var(--c-main);margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--tx-dark-2)}
.empty-state .btn{margin-top:16px}

/* ---------- CTA ---------- */
.cta-band{background:var(--bg-dark);color:var(--tx-light);text-align:center;padding:120px 0}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.25;letter-spacing:-.02em}
.cta-band p{margin-top:14px;font-size:15px;color:var(--tx-light-2)}
.cta-band .btn{margin-top:34px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:46px auto 0}
.faq-item{border-bottom:1px solid var(--line-light)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 14px;text-align:left;font-size:16px;font-weight:600;line-height:1.5;
}
.faq-plus{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform .25s var(--ease)}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--c-main);border-radius:2px}
.faq-plus::before{left:0;top:7px;width:16px;height:2px}
.faq-plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:260px}
.faq-a p{padding:0 14px 24px;font-size:15px;line-height:1.8;color:var(--tx-dark-2)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-dark);color:var(--tx-light-2);padding:72px 0 28px;border-top:1px solid var(--line-dark)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand-name{font-size:17px}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.8;max-width:280px}
.footer-col h4{font-size:14px;color:var(--tx-light);font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:10px;font-size:13.5px}
.footer-col a{transition:color .2s}
.footer-col a:hover{color:var(--c-main)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:var(--tx-light-2);
}

/* ---------- 移动端固定 CTA ---------- */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  height:56px;padding:8px 16px;background:rgba(12,14,17,.96);
  border-top:1px solid var(--line-dark);backdrop-filter:blur(10px);
}
.mobile-cta .btn{width:100%;height:40px}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  :root{--sec:96px}
}
@media (max-width:1023px){
  :root{--sec:80px}
  .nav-cards{display:none;justify-content:flex-start}
  .nav-toggle{display:inline-flex}
  .nav-panel{flex-wrap:wrap}
  .nav-panel.is-open .nav-cards{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;
    flex-basis:100%;order:3;padding-top:10px;border-top:1px solid var(--line-dark);margin-top:6px;
  }
  .nav-panel.is-open .nav-card{border:1px solid rgba(255,255,255,.08)}
  .hero{padding:52px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .play-grid{grid-template-columns:1fr;gap:32px}
  .feedback-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .news-row{grid-template-columns:1fr;gap:14px}
  .news-meta{justify-content:flex-start}
  .timeline{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--sec:56px}
  body{padding-bottom:72px}
  .container{padding:0 18px}
  .brand-name{font-size:15px}
  .nav-toggle{display:none}
  .nav-cards{
    display:flex;flex-basis:100%;order:3;overflow-x:auto;gap:8px;
    padding:10px 0 2px;scrollbar-width:none;border-top:1px solid var(--line-dark);margin-top:6px;
  }
  .nav-cards::-webkit-scrollbar{display:none}
  .nav-card{flex:0 0 auto;border:1px solid rgba(255,255,255,.08)}
  .nav-card.is-active::after{display:none}
  .nav-actions{margin-left:auto}
  .hero h1{font-size:clamp(2rem,8vw,2.6rem)}
  .hero-sub{font-size:15.5px}
  .hero-visual{aspect-ratio:16/11}
  .hero-points{gap:16px;margin-top:28px}
  .feedback-grid,.timeline,.footer-grid{grid-template-columns:1fr}
  .pbar-row{grid-template-columns:1fr;gap:10px;padding:18px 0}
  .pbar-value{text-align:left}
  .reward-scroller{gap:14px}
  .reward-card{flex:0 0 78%}
  .news-title{font-size:17px}
  .cta-band{padding:84px 0}
  .mobile-cta{display:flex}
}
@media (max-width:520px){
  .btn{width:100%}
  .btn-ghost{width:auto}
  .nav-actions .btn{width:auto}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .reward-card{flex:0 0 86%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --c-primary:#12E1A8;
  --c-primary-deep:#0FBE8E;
  --c-primary-soft:rgba(18,225,168,.12);
  --c-accent:#FF3E8E;
  --c-accent-soft:rgba(255,62,142,.12);
  --c-violet:#7C5CFF;
  --c-dark:#0C0E11;
  --c-panel:#14171C;
  --c-line-dark:#23262C;
  --c-paper:#F5F4F0;
  --c-white:#FFFFFF;
  --t-dark:#0B0D10;
  --t-muted:#6B7280;
  --t-light:#EDEDEA;
  --t-light-muted:#8A8F98;
  --line-light:rgba(11,13,16,.08);
  --line-dark:rgba(255,255,255,.07);
  --r-panel:20px;
  --r-card:14px;
  --r-sm:12px;
  --r-badge:6px;
  --shadow-light:0 1px 2px rgba(11,13,16,.04),0 12px 32px -12px rgba(11,13,16,.12);
  --shadow-card:0 1px 2px rgba(11,13,16,.05),0 16px 34px -18px rgba(11,13,16,.22);
  --container:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,sans-serif;
  --font-num:'Inter','Manrope','PingFang SC',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--t-dark);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,225,168,.28)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container-wide{max-width:1360px}
.section{padding:112px 0}
.section--dark{background:var(--c-dark);color:var(--t-light)}
.section--paper{background:var(--c-paper)}
.section--white{background:var(--c-white)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:14px 0;
  background:rgba(12,14,17,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.05);
}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--c-panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-panel);
  padding:10px 14px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:var(--t-light);font-weight:700;letter-spacing:-.02em;font-size:1.05rem}
.brand-mark{
  width:10px;height:10px;border-radius:3px;
  background:var(--c-primary);
  box-shadow:0 0 16px rgba(18,225,168,.65);
  flex:none;
}
.nav-cards{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav-card{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:9px 13px;border-radius:var(--r-sm);
  font-size:13px;line-height:1;color:var(--t-light-muted);
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-card .ico{width:20px;height:20px;flex:none;transition:transform .22s var(--ease)}
.nav-card:hover{background:rgba(255,255,255,.06);color:var(--t-light);transform:translateY(-1px)}
.nav-card:hover .ico{transform:scale(1.06)}
.nav-card.is-active{color:var(--c-primary);border-color:rgba(18,225,168,.5);background:rgba(18,225,168,.06)}
.nav-card.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line-dark);background:rgba(255,255,255,.04);
  cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:1.6px;background:var(--t-light);
  border-radius:2px;transform:translateX(-50%);transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;background:var(--c-primary)}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;background:var(--c-primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .18s var(--ease),box-shadow .22s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#0C0E11;box-shadow:0 10px 26px -14px rgba(18,225,168,.9)}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-1px);color:#08090B}
.btn-ghost{background:transparent;color:var(--t-light);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.32);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--t-dark);border-color:rgba(11,13,16,.18)}
.btn-outline:hover{background:rgba(11,13,16,.05);transform:translateY(-1px)}
.btn-lg{height:52px;padding:0 28px;font-size:15px}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-block{width:100%}
.btn-shine{position:relative;overflow:hidden}
.btn-shine::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:38%;
  background:linear-gradient(90deg,rgba(255,255,255,0),#FFFFFF,rgba(255,255,255,0));
  animation:shineMove 2.6s linear infinite;
}
@keyframes shineMove{0%{transform:translateX(-110%)}100%{transform:translateX(360%)}}

/* ---------- badges / pills ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 10px;border-radius:var(--r-badge);
  font-size:12px;line-height:1;letter-spacing:.04em;
  background:var(--c-primary-soft);color:var(--c-primary);
  border:1px solid rgba(18,225,168,.22);
}
.badge--accent{background:var(--c-accent-soft);color:var(--c-accent);border-color:rgba(255,62,142,.24)}
.badge--dark{background:rgba(255,255,255,.06);color:var(--t-light-muted);border-color:var(--line-dark)}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t-light-muted)}
.crumb a{color:var(--t-light-muted);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{opacity:.45}
.crumb .now{color:var(--t-light)}

/* ---------- page hero ---------- */
.page-hero{position:relative;background:var(--c-dark);color:var(--t-light);overflow:hidden;padding:52px 0 84px}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.26;
}
.page-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,14,17,.72) 0%,rgba(12,14,17,.86) 55%,#0C0E11 100%);
}
.page-hero__inner{position:relative;z-index:2;padding-top:34px;max-width:900px}
.page-hero h1{
  font-size:clamp(1.95rem,4.4vw,3.3rem);line-height:1.1;letter-spacing:-.03em;
  margin:20px 0 0;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary)}
.page-hero__sub{margin-top:18px;font-size:16px;color:var(--t-light-muted);max-width:640px}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.status-dots{display:flex;flex-wrap:wrap;gap:22px;margin-top:36px;padding-top:22px;border-top:1px solid var(--line-dark)}
.status-dots span{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--t-light-muted)}
.status-dots i{width:8px;height:8px;border-radius:2px;background:var(--c-primary);flex:none;box-shadow:0 0 12px rgba(18,225,168,.6)}
.status-dots span:nth-child(2) i{background:var(--c-violet);box-shadow:0 0 12px rgba(124,92,255,.6)}
.status-dots span:nth-child(3) i{background:var(--c-accent);box-shadow:0 0 12px rgba(255,62,142,.55)}

/* ---------- category chips ---------- */
.cat-switch{padding:28px 0 0;background:var(--c-dark)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:28px;border-bottom:1px solid var(--line-dark)}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:var(--r-sm);
  font-size:13px;line-height:1;
  background:rgba(255,255,255,.04);border:1px solid var(--line-dark);
  color:var(--t-light-muted);
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.chip:hover{background:rgba(255,255,255,.08);color:var(--t-light);transform:translateY(-2px)}
.chip.is-active{background:var(--c-primary-soft);border-color:rgba(18,225,168,.5);color:var(--c-primary);font-weight:600}
.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.7}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;border-bottom:1px solid var(--line-light);margin-bottom:44px}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.2}
.sec-head p{margin-top:10px;font-size:14px;color:var(--t-muted);max-width:560px}
.sec-head .more{font-size:13px;color:var(--c-primary-deep);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.sec-head .more:hover{color:var(--c-primary)}
.section--dark .sec-head{border-bottom-color:var(--line-dark)}
.section--dark .sec-head p{color:var(--t-light-muted)}

/* ---------- split blocks ---------- */
.split{display:grid;gap:48px;align-items:start}
.split--5-7{grid-template-columns:5fr 7fr}
.split--7-5{grid-template-columns:7fr 5fr}
.split-media{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  box-shadow:var(--shadow-light);background:var(--c-panel);
}
.split-media img{width:100%;aspect-ratio:5/4;object-fit:cover;transition:transform .6s var(--ease)}
.split-media:hover img{transform:scale(1.04)}
.split-media__veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,14,17,0) 38%,rgba(12,14,17,.72) 100%);
}
.split-media__tag{
  position:absolute;left:16px;top:16px;
}
.split-media__num{
  position:absolute;right:18px;bottom:12px;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:44px;font-weight:700;color:rgba(255,255,255,.24);letter-spacing:-.04em;line-height:1;
}
.split-media__cap{
  position:absolute;left:18px;bottom:18px;right:96px;
  color:var(--t-light);font-size:14px;line-height:1.6;
}
.split-body h2{font-size:clamp(1.4rem,2.4vw,1.95rem);line-height:1.24;margin-bottom:18px}
.split-body > p{color:var(--t-muted);font-size:15.5px;margin-bottom:16px}
.check-list{margin-top:26px;display:grid;gap:2px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 4px;border-top:1px solid var(--line-light);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.check-list li:last-child{border-bottom:1px solid var(--line-light)}
.check-list li:hover{transform:translateX(4px);border-top-color:var(--c-primary)}
.check-list .idx{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:12px;font-weight:700;color:var(--c-primary);letter-spacing:.06em;
  padding-top:4px;flex:none;
}
.check-list strong{display:block;font-size:15px;margin-bottom:4px}
.check-list span{font-size:13.5px;color:var(--t-muted);line-height:1.7}

/* stat card */
.stat-card{
  background:var(--c-white);border:1px solid var(--line-light);border-radius:var(--r-card);
  box-shadow:var(--shadow-light);padding:22px 22px 18px;margin-top:28px;
}
.stat-card h3{font-size:14px;color:var(--t-muted);font-weight:600;letter-spacing:.02em;margin-bottom:16px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.stat-item{border-top:1px solid var(--line-light);padding-top:12px}
.stat-item b{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700;letter-spacing:-.03em;color:var(--t-dark);line-height:1.1;
}
.stat-item b em{font-style:normal;font-size:.5em;color:var(--t-muted);margin-left:3px;letter-spacing:0}
.stat-item span{display:block;margin-top:6px;font-size:12.5px;color:var(--t-muted)}

/* ---------- dark process band ---------- */
.progress-list{display:grid;gap:26px;max-width:920px}
.progress-row{display:grid;grid-template-columns:200px 1fr 62px;align-items:center;gap:20px}
.progress-row .label{font-size:14px;color:var(--t-light)}
.progress-row .label small{display:block;font-size:12px;color:var(--t-light-muted);margin-top:3px}
.track{position:relative;height:8px;border-radius:4px;background:var(--c-line-dark);overflow:hidden}
.fill{position:absolute;left:0;top:0;bottom:0;border-radius:4px;background:linear-gradient(90deg,var(--c-primary),var(--c-violet) 65%,var(--c-accent));transition:width .8s var(--ease)}
.fill--running{animation:breathe 2.6s ease-in-out infinite}
.fill--done{background:linear-gradient(90deg,#12E1A8,#12E1A8)}
.fill--idle{background:linear-gradient(90deg,#3A3F47,#2B2F36)}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.62}}
.progress-row .pct{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;color:var(--t-light-muted);text-align:right;
}
.progress-row .pct.done{color:var(--c-primary)}
.state-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.state-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 13px;border-radius:var(--r-badge);
  font-size:12px;line-height:1;border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);color:var(--t-light-muted);
}
.state-pill.ok{color:var(--c-primary);border-color:rgba(18,225,168,.4);background:var(--c-primary-soft)}
.state-pill.run{color:var(--c-violet);border-color:rgba(124,92,255,.4);background:rgba(124,92,255,.1)}

/* ---------- QA flat ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.qa-card{
  background:var(--c-white);border:1px solid var(--line-light);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--shadow-light);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(18,225,168,.4)}
.qa-card h3{font-size:16px;line-height:1.45;margin-bottom:12px}
.qa-card h3::before{
  content:"";display:block;width:26px;height:3px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-violet));margin-bottom:14px;
}
.qa-card p{font-size:14px;color:var(--t-muted);line-height:1.8}

/* ---------- CTA band ---------- */
.cta-band{background:var(--c-dark);color:var(--t-light);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;left:50%;top:-160px;width:620px;height:320px;transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(18,225,168,.22),rgba(18,225,168,0));
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:640px;margin:0 auto}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.25}
.cta-inner p{margin-top:14px;font-size:14.5px;color:var(--t-light-muted)}
.cta-inner .btn{margin-top:34px}

/* ---------- related links ---------- */
.link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.link-card{
  display:block;background:var(--c-white);border:1px solid var(--line-light);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-light);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.link-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(18,225,168,.45)}
.link-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.link-card h3{font-size:16px;margin-bottom:8px}
.link-card p{font-size:13.5px;color:var(--t-muted);line-height:1.75}
.link-card .arrow{color:var(--c-primary-deep);font-family:var(--font-num);font-size:13px}
.back-row{margin-top:34px;display:flex;justify-content:center}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:var(--t-light-muted);padding:72px 0 30px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand-name{display:block;color:var(--t-light);font-weight:700;font-size:1.05rem;letter-spacing:-.02em;margin-bottom:14px}
.footer-brand p{font-size:13.5px;line-height:1.8;max-width:280px}
.footer-col h4{font-size:13px;color:var(--t-light);letter-spacing:.04em;margin-bottom:16px;font-weight:600}
.footer-col ul{display:grid;gap:11px}
.footer-col li,.footer-col a{font-size:13.5px;color:var(--t-light-muted)}
.footer-col a{transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--t-light-muted);
}

/* ---------- mobile fixed cta ---------- */
.mobile-cta{display:none}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .section{padding:80px 0}
  .nav-cards{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    display:none;grid-template-columns:1fr 1fr;gap:8px;
    background:var(--c-panel);border:1px solid var(--line-dark);
    border-radius:var(--r-panel);padding:12px;margin-left:0;
    box-shadow:0 24px 48px -24px rgba(0,0,0,.7);
  }
  .nav-cards.is-open{display:grid}
  .nav-card{padding:12px;font-size:13.5px}
  .nav-card.is-active::after{left:12px;right:12px}
  .nav-panel{position:relative}
  .nav-toggle{display:block}
  .split--5-7,.split--7-5{grid-template-columns:1fr;gap:32px}
  .qa-grid{grid-template-columns:1fr}
  .link-cards{grid-template-columns:1fr}
  .progress-row{grid-template-columns:150px 1fr 56px;gap:14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .page-hero{padding:34px 0 60px}
  .page-hero__sub{font-size:15px}
  .btn{height:44px;padding:0 18px;font-size:13.5px}
  .btn-lg{height:48px}
  .status-dots{gap:14px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .progress-row{grid-template-columns:1fr 56px;row-gap:8px}
  .progress-row .label{grid-column:1 / -1}
  .qa-grid{gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-brand p{max-width:none}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:30px}
  .split-media img{aspect-ratio:4/3}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    height:56px;padding:0 14px;align-items:center;
    background:rgba(12,14,17,.94);backdrop-filter:blur(12px);
    border-top:1px solid var(--line-dark);
  }
  .mobile-cta .btn{flex:1}
  body{padding-bottom:56px}
}
@media (max-width:520px){
  .page-hero h1{font-size:1.7rem}
  .chip{padding:9px 13px;font-size:12.5px}
  .stat-grid{grid-template-columns:1fr}
  .split-body > p{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition-property:color,background-color,border-color,opacity !important;transform:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --primary:#12E1A8;
  --primary-deep:#0B9E77;
  --accent:#FF3E8E;
  --bridge:#7C5CFF;
  --dark:#0C0E11;
  --panel:#14171C;
  --track:#23262C;
  --paper:#F5F4F0;
  --white:#FFFFFF;
  --ink:#0B0D10;
  --ink-2:#6B7280;
  --ink-3:#8A8F98;
  --light:#EDEDEA;
  --line:rgba(11,13,16,.08);
  --line-2:rgba(11,13,16,.14);
  --line-dark:rgba(255,255,255,.07);
  --r-panel:20px;
  --r-card:14px;
  --r-sm:12px;
  --r-badge:6px;
  --sh:0 1px 2px rgba(11,13,16,.04), 0 12px 32px -12px rgba(11,13,16,.12);
  --sh-soft:0 1px 2px rgba(11,13,16,.03), 0 8px 20px -12px rgba(11,13,16,.1);
  --max:1240px;
  --sect:112px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',-apple-system,'Segoe UI',Roboto,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{position:relative;z-index:60;padding:16px 0 0}
.nav-panel{
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px;
  background:var(--panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-panel);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04), 0 18px 40px -26px rgba(11,13,16,.8);
}
.brand{display:inline-flex;align-items:center;gap:10px;padding:8px 10px;color:var(--light);font-weight:700;letter-spacing:-.02em;font-size:17px;white-space:nowrap}
.brand-mark{width:8px;height:8px;border-radius:2px;background:var(--primary);box-shadow:0 0 12px rgba(18,225,168,.7);flex:none}
.brand-name{display:inline-block}
.nav-cards{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-card{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:var(--r-sm);
  font-size:13px;
  color:var(--ink-3);
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.nav-card .ico{width:20px;height:20px;flex:none;transition:transform .22s var(--ease)}
.nav-card:hover{background:rgba(255,255,255,.06);color:var(--light)}
.nav-card:hover .ico{transform:scale(1.06)}
.nav-card.is-active{color:var(--primary);border-color:rgba(18,225,168,.42);background:rgba(18,225,168,.08)}
.nav-card.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--primary)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--r-sm);align-items:center;justify-content:center;flex-direction:column;gap:4px;border:1px solid var(--line-dark);background:rgba(255,255,255,.03);transition:background .22s var(--ease)}
.nav-toggle span{display:block;width:16px;height:1.6px;background:var(--light);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle:hover{background:rgba(255,255,255,.09)}
.nav-panel.is-open .nav-toggle span:nth-child(1){transform:translateY(5.6px) rotate(45deg)}
.nav-panel.is-open .nav-toggle span:nth-child(2){opacity:0}
.nav-panel.is-open .nav-toggle span:nth-child(3){transform:translateY(-5.6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  cursor:pointer;
  overflow:hidden;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),opacity .22s var(--ease);
}
.btn-primary{background:var(--primary);color:var(--dark)}
.btn-primary:hover{background:#0ecf9a;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:#0bb98a}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.18);color:var(--light)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-outline-ink{background:transparent;border-color:var(--line-2);color:var(--ink)}
.btn-outline-ink:hover{border-color:var(--primary);color:var(--primary-deep);transform:translateY(-1px)}
.btn-ghost{padding:0;height:auto;color:var(--primary-deep);font-weight:600}
.btn-ghost:hover{color:var(--primary)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-shine::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:40%;
  background:linear-gradient(90deg,rgba(12,14,17,0),rgba(12,14,17,.45),rgba(12,14,17,0));
  animation:shine 2.8s linear infinite;
}
@keyframes shine{0%{transform:translateX(-20%)}100%{transform:translateX(280%)}}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;background:var(--dark);overflow:hidden;padding:64px 0 60px}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.3;
}
.article-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,14,17,.82),rgba(12,14,17,.95));
}
.hero-inner{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:22px;overflow:hidden}
.breadcrumb a{color:var(--ink-3);white-space:nowrap}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.25);flex:none}
.crumb-cat{color:var(--light);white-space:nowrap}
.crumb-now{color:var(--primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52%}
.article-title{
  max-width:920px;
  font-size:clamp(1.6rem,3.1vw,2.4rem);
  line-height:1.25;
  letter-spacing:-.025em;
  color:var(--light);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;font-size:13px;color:var(--ink-3)}
.meta-item{white-space:nowrap}
.meta-dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.28);flex:none}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  letter-spacing:.04em;
  background:rgba(18,225,168,.12);
  color:var(--primary);
  border:1px solid rgba(18,225,168,.24);
}
.badge-accent{background:rgba(255,62,142,.12);color:#FF7FB4;border-color:rgba(255,62,142,.26)}

/* ---------- 正文布局 ---------- */
.article-main{padding:var(--sect) 0}
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
.article-body{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  padding:48px 52px 40px;
  box-shadow:var(--sh);
  min-width:0;
}
.article-body p{font-size:17px;line-height:1.85;color:#1B1F24;margin:1.2em 0}
.article-body h2{
  position:relative;
  font-size:clamp(1.25rem,2.2vw,1.4rem);
  line-height:1.35;
  color:var(--ink);
  margin:40px 0 14px;
  padding-left:14px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--primary)}
.article-body h3{font-size:1.075rem;line-height:1.45;color:var(--ink);margin:28px 0 10px}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:1.5em;list-style:revert}
.article-body li{font-size:16.5px;line-height:1.8;margin:.5em 0;color:#1B1F24}
.article-body blockquote{
  margin:1.4em 0;
  padding:16px 20px;
  border-left:2px solid var(--primary);
  background:rgba(18,225,168,.06);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#39404a;
  font-size:16px;
}
.article-body blockquote p{margin:0;font-size:16px}
.article-body img{border-radius:var(--r-card);margin:1.6em auto;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption,.article-body .caption{font-size:12px;color:var(--ink-2);text-align:center;margin-top:10px;line-height:1.6}
.article-body a{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{text-decoration-thickness:2px;color:var(--primary)}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.article-body thead th{background:var(--paper);text-align:left;font-weight:600;padding:12px 14px;border-bottom:1px solid var(--line)}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:#1B1F24}
.article-body tbody tr:nth-child(even){background:#FAFAF8}
.article-body tbody tr:hover{background:rgba(18,225,168,.05)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{background:var(--paper);padding:2px 6px;border-radius:4px;font-size:14px;color:var(--primary-deep)}
.empty-state{
  border:1px dashed rgba(18,225,168,.45);
  border-radius:var(--r-card);
  padding:48px 24px;
  text-align:center;
  background:rgba(18,225,168,.03);
}
.empty-state svg{width:48px;height:48px;margin:0 auto 16px;color:var(--primary)}
.empty-state h2{font-size:1.15rem;padding:0;margin:0 0 8px}
.empty-state h2::before{display:none}
.empty-state p{font-size:15px;color:var(--ink-2);margin:0 0 20px}

/* ---------- 标签与翻页 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 13px;
  border-radius:var(--r-badge);
  font-size:12.5px;
  letter-spacing:.04em;
  background:rgba(18,225,168,.12);
  color:var(--primary-deep);
  border:1px solid rgba(18,225,168,.2);
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.tag:hover{background:rgba(18,225,168,.22);color:#08795C;transform:translateY(-1px)}
.tag-accent{background:rgba(255,62,142,.1);color:#C72263;border-color:rgba(255,62,142,.22)}
.tag-accent:hover{background:rgba(255,62,142,.18);color:#C72263}
.post-nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:26px}
.post-nav a{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink)}
.post-nav a:hover{color:var(--primary-deep)}
.post-nav a svg{width:16px;height:16px}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:28px;display:grid;gap:20px}
.side-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-soft);
}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary)}
.side-list li{font-size:14px;color:var(--ink-2);padding:9px 0;border-bottom:1px solid var(--line);display:flex;gap:10px;line-height:1.65}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li span.num{color:var(--primary-deep);font-weight:700;font-size:12px;letter-spacing:.06em;flex:none;padding-top:2px}
.side-links{display:grid;gap:10px}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  font-size:14px;
  font-weight:600;
  transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.side-link:hover{border-color:rgba(18,225,168,.5);background:rgba(18,225,168,.06);transform:translateY(-2px)}
.side-link svg{width:16px;height:16px;color:var(--ink-2);flex:none}
.side-link:hover svg{color:var(--primary-deep)}
.side-post{display:flex;gap:12px;align-items:center}
.side-post img{width:72px;height:54px;object-fit:cover;border-radius:10px;flex:none}
.side-post strong{display:block;font-size:14px;line-height:1.5;letter-spacing:0}
.side-post span{display:block;font-size:12px;color:var(--ink-2);margin-top:4px}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 var(--sect)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.4rem,2.4vw,1.9rem);line-height:1.2}
.section-head h2::after{content:"";display:block;width:64px;height:2px;border-radius:2px;background:var(--primary);margin-top:14px}
.section-head .more{font-size:14px;font-weight:600;color:var(--primary-deep);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.section-head .more:hover{color:var(--primary)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:block;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-soft);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:rgba(18,225,168,.4)}
.related-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--track)}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.related-card:hover .related-thumb img{transform:scale(1.04)}
.related-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(12,14,17,.72);color:var(--primary);border-color:rgba(18,225,168,.3);backdrop-filter:blur(6px)}
.related-body{padding:20px}
.related-body h3{font-size:16px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body p{font-size:13.5px;color:var(--ink-2);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--ink-2)}
.related-foot svg{width:16px;height:16px;color:var(--ink-2);transition:transform .25s var(--ease),color .25s var(--ease)}
.related-card:hover .related-foot svg{transform:translateX(3px);color:var(--primary-deep)}

/* ---------- FAQ ---------- */
.faq-section{padding:0 0 var(--sect)}
.faq-wrap{max-width:820px;margin:0 auto;background:var(--white);border:1px solid var(--line);border-radius:var(--r-panel);padding:10px 28px;box-shadow:var(--sh-soft)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  letter-spacing:-.01em;
}
.faq-q:hover{color:var(--primary-deep)}
.faq-plus{position:relative;width:18px;height:18px;flex:none;transition:transform .25s var(--ease)}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-plus::before{left:0;top:8px;width:18px;height:2px}
.faq-plus::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:260px}
.faq-a p{font-size:15px;line-height:1.8;color:var(--ink-2);padding:0 0 20px}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--dark);
  padding:96px 0;
  overflow:hidden;
  text-align:center;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(680px 320px at 50% 0%,rgba(18,225,168,.16),transparent 70%);
}
.cta-inner{position:relative;z-index:2;max-width:660px;margin:0 auto}
.cta-inner h2{font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.2;color:var(--light)}
.cta-inner p{margin:16px 0 32px;font-size:15px;color:var(--ink-3)}
.cta-inner .btn-shine::after{background:linear-gradient(90deg,rgba(12,14,17,0),rgba(12,14,17,.5),rgba(12,14,17,0))}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);padding:72px 0 28px;border-top:1px solid var(--line-dark)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand-name{display:block;color:var(--light);font-weight:700;font-size:17px;letter-spacing:-.02em;margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:var(--ink-3);line-height:1.8;max-width:320px}
.footer-col h4{font-size:14px;color:var(--light);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:13.5px;color:var(--ink-3);line-height:1.7}
.footer-col a{color:var(--ink-3)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:24px;font-size:12.5px;color:var(--ink-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1240px){
  .article-layout{gap:32px}
}
@media (max-width:1023px){
  :root{--sect:80px}
  .nav-panel{flex-wrap:wrap}
  .nav-cards{
    order:5;
    display:none;
    width:100%;
    grid-template-columns:1fr 1fr;
    gap:8px;
    margin:10px 0 2px;
    padding-top:12px;
    border-top:1px solid var(--line-dark);
  }
  .nav-panel.is-open .nav-cards{display:grid}
  .nav-card{background:rgba(255,255,255,.04);justify-content:flex-start;padding:12px}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sect:56px}
  .container{padding:0 18px}
  .site-header{padding-top:12px}
  .brand{font-size:15px;padding:6px}
  .nav-cards{
    display:flex;
    flex-wrap:nowrap;
    overflow-x:auto;
    gap:8px;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .nav-cards::-webkit-scrollbar{display:none}
  .nav-panel:not(.is-open) .nav-cards{display:none}
  .nav-card{flex:none}
  .nav-actions .btn-sm{padding:0 12px;font-size:13px}
  .article-hero{padding:44px 0 40px}
  .crumb-now{max-width:38%}
  .article-body{padding:28px 20px 26px;border-radius:var(--r-card)}
  .article-body p{font-size:16px}
  .article-body li{font-size:15.5px}
  .article-side{grid-template-columns:minmax(0,1fr)}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .faq-wrap{padding:6px 18px}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
}
@media (max-width:520px){
  .article-title{font-size:1.45rem}
  .btn{width:100%}
  .btn-sm{width:auto}
  .cta-inner .btn{width:100%}
  .post-nav{flex-direction:column;align-items:stretch}
  .post-nav a{justify-content:space-between}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --primary:#12E1A8;
  --primary-deep:#0FBF8F;
  --accent:#FF3E8E;
  --purple:#7C5CFF;
  --dark:#0C0E11;
  --panel:#14171C;
  --track:#23262C;
  --paper:#F5F4F0;
  --white:#FFFFFF;
  --ink:#0B0D10;
  --ink-2:#6B7280;
  --dark-ink:#EDEDEA;
  --dark-ink-2:#8A8F98;
  --line:rgba(11,13,16,.08);
  --line-dark:rgba(255,255,255,.07);
  --r-panel:20px;
  --r-card:14px;
  --r-sm:12px;
  --r-badge:6px;
  --shadow:0 1px 2px rgba(11,13,16,.04),0 12px 32px -12px rgba(11,13,16,.12);
  --shadow-lift:0 2px 4px rgba(11,13,16,.05),0 20px 44px -16px rgba(11,13,16,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --section:112px;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Inter',sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;color:inherit;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:12px 0;background:linear-gradient(180deg,rgba(12,14,17,.96),rgba(12,14,17,.72) 70%,rgba(12,14,17,0));backdrop-filter:blur(10px);}
.nav-panel{
  display:flex;align-items:center;gap:18px;
  background:var(--panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-panel);
  padding:10px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 10px;border-radius:var(--r-sm);}
.brand-mark{width:8px;height:8px;border-radius:2px;background:var(--primary);box-shadow:0 0 0 4px rgba(18,225,168,.14);}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.02em;color:var(--dark-ink);white-space:nowrap;}
.nav-cards{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-card{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:var(--r-sm);
  font-size:13px;color:var(--dark-ink-2);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-card .ico{width:20px;height:20px;flex:0 0 auto;transition:transform .2s var(--ease);}
.nav-card:hover{background:rgba(255,255,255,.06);color:var(--dark-ink);}
.nav-card:hover .ico{transform:scale(1.06);}
.nav-card.is-active{color:var(--primary);border-color:rgba(18,225,168,.45);}
.nav-card.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;background:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line-dark);align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--dark-ink);border-radius:2px;}
.nav-toggle span:last-child{width:11px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),opacity .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#0C0E11;}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;color:var(--dark-ink);border-color:rgba(255,255,255,.18);}
.btn-outline:hover{border-color:rgba(18,225,168,.55);color:var(--primary);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--primary);padding:0 6px;height:auto;}
.btn-ghost:hover{color:var(--primary-deep);}
.btn-sm{height:38px;padding:0 16px;font-size:13px;border-radius:10px;}
.btn-lg{height:52px;padding:0 32px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-shine{position:relative;overflow:hidden;}
.btn-shine::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--purple),var(--accent),transparent);
  animation:shine 2.8s linear infinite;
}
@keyframes shine{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--dark);color:var(--dark-ink);}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;}
.hero-veil{position:absolute;inset:0;background:linear-gradient(120deg,rgba(12,14,17,.94) 0%,rgba(12,14,17,.72) 46%,rgba(12,14,17,.42) 100%);}
.hero-inner{position:relative;z-index:2;padding:72px 0 68px;max-width:var(--container);}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dark-ink-2);margin-bottom:22px;}
.crumbs a{color:var(--dark-ink-2);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--primary);}
.crumbs span{opacity:.5;}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.04em;
  background:rgba(18,225,168,.12);color:var(--primary);
}
.page-hero h1{
  margin:18px 0 14px;
  font-size:clamp(1.9rem,4vw,3rem);
  line-height:1.14;
  letter-spacing:-.03em;
  max-width:820px;
}
.hero-sub{font-size:16px;line-height:1.7;color:var(--dark-ink-2);max-width:620px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line-dark);}
.hero-meta div{display:flex;flex-direction:column;gap:2px;}
.hero-meta b{font-size:22px;letter-spacing:-.02em;color:var(--dark-ink);}
.hero-meta span{font-size:12px;color:var(--dark-ink-2);}

/* ---------- chip nav ---------- */
.chip-bar{background:var(--dark);padding:0 0 26px;}
.chip-nav{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;
  padding:10px 18px;border-radius:var(--r-sm);
  font-size:14px;color:var(--dark-ink-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-dark);
  transition:all .2s var(--ease);
}
.chip:hover{color:var(--dark-ink);background:rgba(255,255,255,.08);transform:translateY(-1px);}
.chip.is-active{color:var(--primary);border-color:rgba(18,225,168,.5);background:rgba(18,225,168,.1);}

/* ---------- sections ---------- */
.section{padding:var(--section) 0;}
.section-paper{background:var(--paper);}
.section-white{background:var(--white);}
.section-dark{background:var(--dark);color:var(--dark-ink);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.2;letter-spacing:-.02em;max-width:640px;}
.eyebrow{display:block;font-size:12px;letter-spacing:.14em;color:var(--primary);margin-bottom:12px;}
.sec-desc{margin:0;max-width:420px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.section-dark .sec-desc{color:var(--dark-ink-2);}
.section-dark .eyebrow{color:var(--primary);}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:27px;top:16px;bottom:16px;width:2px;
  background:linear-gradient(180deg,rgba(18,225,168,.7),rgba(124,92,255,.35),rgba(35,38,44,.5));
}
.tl-item{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:28px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:transform .25s var(--ease);
}
.tl-item:last-child{border-bottom:0;}
.tl-item:hover{transform:translateX(4px);}
.tl-num{
  position:relative;z-index:1;
  width:56px;height:56px;border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  background:var(--panel);color:var(--primary);
  font-size:17px;font-weight:700;letter-spacing:-.02em;
  border:1px solid rgba(18,225,168,.28);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.tl-item:hover .tl-num{border-color:var(--primary);box-shadow:0 0 0 4px rgba(18,225,168,.1);}
.tl-body h3{font-size:18px;line-height:1.4;letter-spacing:-.01em;margin-bottom:8px;}
.tl-body p{font-size:15px;line-height:1.85;color:var(--ink-2);max-width:720px;}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;padding:5px 11px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.02em;
  background:rgba(18,225,168,.12);color:var(--primary-deep);
}
.tag.tag-accent{background:rgba(255,62,142,.1);color:#D62A72;}

/* ---------- stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-card{
  background:var(--panel);
  border:1px solid var(--line-dark);
  border-radius:var(--r-card);
  padding:26px 22px;
  position:relative;
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(18,225,168,.35);}
.stat-card::before{content:"";position:absolute;left:22px;right:22px;top:0;height:1px;background:linear-gradient(90deg,var(--primary),transparent);}
.stat-num{display:block;font-size:34px;line-height:1.1;font-weight:700;letter-spacing:-.03em;color:var(--primary);}
.stat-label{display:block;font-size:13px;color:var(--dark-ink);margin-top:8px;font-weight:600;}
.stat-card p{margin-top:10px;font-size:13px;line-height:1.7;color:var(--dark-ink-2);}

/* ---------- split figure ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.figure{margin:0;}
.figure img{width:100%;border-radius:var(--r-panel);border:1px solid var(--line);box-shadow:var(--shadow);}
.figure figcaption{margin-top:14px;font-size:12.5px;color:var(--ink-2);}
.split-body h2{font-size:clamp(1.4rem,2.4vw,1.95rem);line-height:1.25;letter-spacing:-.02em;margin-bottom:18px;}
.split-body p{font-size:15.5px;line-height:1.9;color:var(--ink-2);}
.split-body p + p{margin-top:14px;}
.mini-list{margin-top:26px;display:grid;gap:14px;}
.mini-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink);}
.dot{flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:2px;background:var(--primary);}
.mini-list li span{color:var(--ink-2);}

/* ---------- pitfalls ---------- */
.pit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.pit-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.pit-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);}
.pit-card h3{font-size:16px;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
.pit-card h3 em{
  font-style:normal;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:#D62A72;background:rgba(255,62,142,.1);
  padding:4px 9px;border-radius:var(--r-badge);
}
.pit-card p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary-deep);}
.plus{position:relative;width:18px;height:18px;flex:0 0 auto;transition:transform .25s var(--ease);}
.plus::before,.plus::after{content:"";position:absolute;background:currentColor;border-radius:2px;opacity:.55;}
.plus::before{left:0;top:8px;width:18px;height:2px;}
.plus::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-q{color:var(--primary-deep);}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-item.is-open .faq-a{max-height:280px;}
.faq-a p{padding-bottom:20px;font-size:15px;line-height:1.85;color:var(--ink-2);}

/* ---------- cta ---------- */
.cta-band{text-align:center;}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.2;letter-spacing:-.02em;}
.cta-band p{margin:16px auto 32px;max-width:560px;font-size:15px;line-height:1.85;color:var(--dark-ink-2);}

/* ---------- related cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rcard{
  display:flex;flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.rcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);}
.rcard-cover{position:relative;aspect-ratio:4/3;overflow:hidden;}
.rcard-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rcard:hover .rcard-cover img{transform:scale(1.04);}
.rcard-cover .badge{
  position:absolute;left:14px;top:14px;
  padding:5px 10px;border-radius:var(--r-badge);
  font-size:12px;background:rgba(12,14,17,.72);color:var(--primary);
  backdrop-filter:blur(4px);
}
.rcard-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.rcard-body h3{font-size:16.5px;line-height:1.45;margin-bottom:8px;}
.rcard-body p{font-size:14px;line-height:1.75;color:var(--ink-2);flex:1;}
.rcard-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;font-size:13px;color:var(--ink-2);}
.rcard-foot .arrow{color:var(--primary);font-weight:600;transition:transform .2s var(--ease);}
.rcard:hover .rcard-foot .arrow{transform:translateX(4px);}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-ink-2);padding:80px 0 32px;border-top:1px solid var(--line-dark);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line-dark);}
.footer-brand .brand-name{display:block;font-size:18px;color:var(--dark-ink);letter-spacing:-.02em;margin-bottom:14px;}
.footer-brand p{font-size:13.5px;line-height:1.8;max-width:300px;}
.footer-col h4{font-size:13px;letter-spacing:.06em;color:var(--dark-ink);margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:13.5px;line-height:1.7;}
.footer-col a{transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding-top:26px;font-size:12.5px;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--section:80px;}
  .split{grid-template-columns:1fr;gap:36px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:1023px){
  .nav-panel{flex-wrap:wrap;}
  .nav-cards{display:none;order:3;width:100%;margin-left:0;}
  .nav-panel.is-open .nav-cards{
    display:grid;grid-template-columns:repeat(2,1fr);gap:8px;
    padding-top:12px;margin-top:10px;border-top:1px solid var(--line-dark);
  }
  .nav-toggle{display:flex;}
  .nav-actions{margin-left:auto;}
}
@media (max-width:768px){
  :root{--section:56px;}
  .container{padding:0 18px;}
  .hero-inner{padding:52px 0 48px;}
  .hero-meta{gap:20px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .timeline::before{left:21px;}
  .tl-item{grid-template-columns:44px 1fr;gap:18px;padding:22px 0;}
  .tl-num{width:44px;height:44px;border-radius:12px;font-size:15px;}
  .pit-grid{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
}
@media (max-width:767px){
  .nav-panel.is-open .nav-cards{
    display:flex;flex-wrap:nowrap;gap:8px;overflow-x:auto;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .nav-panel.is-open .nav-cards::-webkit-scrollbar{display:none;}
  .nav-card{flex:0 0 auto;white-space:nowrap;}
  .brand-name{font-size:15px;}
}
@media (max-width:520px){
  .btn{width:100%;}
  .nav-actions .btn{width:auto;}
  .hero-meta b{font-size:19px;}
  .faq-q{font-size:15px;padding:16px 0;}
  .stat-card{padding:22px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
    --primary:#12E1A8;
    --primary-deep:#0B8F6E;
    --primary-soft:rgba(18,225,168,.12);
    --accent:#FF3E8E;
    --accent-soft:rgba(255,62,142,.12);
    --purple:#7C5CFF;
    --purple-soft:rgba(124,92,255,.14);
    --dark-0:#0C0E11;
    --dark-1:#14171C;
    --dark-2:#23262C;
    --light-0:#F5F4F0;
    --white:#FFFFFF;
    --ink:#0B0D10;
    --ink-muted:#6B7280;
    --on-dark:#EDEDEA;
    --on-dark-dim:#8A8F98;
    --line-light:rgba(11,13,16,.08);
    --line-dark:rgba(255,255,255,.07);
    --r-panel:20px;
    --r-card:14px;
    --r-sm:12px;
    --r-badge:6px;
    --shadow-light:0 1px 2px rgba(11,13,16,.04),0 12px 32px -12px rgba(11,13,16,.12);
    --shadow-lift:0 18px 46px -20px rgba(11,13,16,.24);
    --container:1240px;
    --sec-y:96px;
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--light-0);
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  ul,ol{margin:0;padding:0;list-style:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p{margin:0;}
  table{border-collapse:collapse;width:100%;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:90;
    padding:14px 0;
    background:rgba(245,244,240,.9);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .nav-panel{
    position:relative;
    display:flex;
    align-items:center;
    gap:12px;
    background:var(--dark-1);
    border:1px solid var(--line-dark);
    border-radius:var(--r-panel);
    padding:10px;
    box-shadow:0 22px 48px -30px rgba(11,13,16,.7);
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    padding:6px 16px 6px 12px;
    color:var(--on-dark);
    font-weight:700;
    font-size:17px;
    letter-spacing:-.02em;
    white-space:nowrap;
  }
  .brand-mark{
    width:8px;height:8px;border-radius:2px;
    background:var(--primary);
    box-shadow:0 0 0 4px rgba(18,225,168,.15);
    flex:none;
  }
  .nav-cards{
    display:flex;
    align-items:center;
    gap:6px;
    flex:1;
    justify-content:center;
  }
  .nav-card{
    position:relative;
    display:flex;
    align-items:center;
    gap:8px;
    padding:10px 14px;
    border-radius:var(--r-sm);
    border:1px solid transparent;
    color:var(--on-dark-dim);
    font-size:13px;
    line-height:1;
    transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  }
  .nav-card .ico{width:20px;height:20px;flex:none;transition:transform .25s var(--ease);}
  .nav-card:hover{background:rgba(255,255,255,.06);color:var(--on-dark);}
  .nav-card:hover .ico{transform:scale(1.06);}
  .nav-card.is-active{
    color:var(--primary);
    border-color:rgba(18,225,168,.55);
    background:rgba(18,225,168,.07);
  }
  .nav-card.is-active::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:3px;
    height:2px;border-radius:2px;
    background:var(--primary);
  }
  .nav-actions{display:flex;align-items:center;gap:8px;}
  .nav-toggle{
    display:none;
    width:40px;height:40px;
    border-radius:var(--r-sm);
    border:1px solid rgba(255,255,255,.14);
    align-items:center;
    justify-content:center;
  }
  .nav-toggle span{position:relative;display:block;width:16px;height:1.6px;background:var(--on-dark);border-radius:2px;}
  .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--on-dark);border-radius:2px;}
  .nav-toggle span::before{top:-5px;}
  .nav-toggle span::after{top:5px;}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:var(--r-sm);
    border:1px solid transparent;
    font-size:14px;
    font-weight:600;
    letter-spacing:.01em;
    transition:transform .2s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .btn-primary{background:var(--primary);color:#062018;box-shadow:0 10px 26px -14px rgba(18,225,168,.9);}
  .btn-primary:hover{background:#0FD39D;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-outline{background:transparent;border-color:rgba(11,13,16,.16);color:var(--ink);}
  .btn-outline:hover{border-color:var(--primary-deep);color:var(--primary-deep);transform:translateY(-1px);}
  .btn-outline:active{transform:translateY(1px);}
  .btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.2);color:var(--on-dark);}
  .btn-ghost-dark:hover{border-color:rgba(18,225,168,.65);color:var(--primary);transform:translateY(-1px);}
  .btn-sm{height:38px;padding:0 16px;font-size:13px;}
  .btn-lg{height:52px;padding:0 34px;font-size:15px;}
  .btn-shine{position:relative;overflow:hidden;}
  .btn-shine::before{
    content:"";
    position:absolute;top:0;left:-40%;
    width:40%;height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
    animation:shine 3.4s ease-in-out infinite;
  }
  @keyframes shine{
    0%{transform:translateX(-130%);}
    60%,100%{transform:translateX(380%);}
  }

  /* ---------- badges / pills / chips ---------- */
  .pill{
    display:inline-flex;align-items:center;gap:7px;
    padding:6px 12px;
    border-radius:var(--r-badge);
    font-size:12px;line-height:1.4;letter-spacing:.04em;font-weight:600;
    background:var(--primary-soft);
    color:var(--primary);
    border:1px solid rgba(18,225,168,.26);
  }
  .pill-accent{background:var(--accent-soft);color:var(--accent);border-color:rgba(255,62,142,.3);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 10px;
    border-radius:var(--r-badge);
    font-size:12px;line-height:1.3;font-weight:600;letter-spacing:.02em;
    white-space:nowrap;
  }
  .badge-open{background:rgba(18,225,168,.15);color:#0B8F6E;}
  .badge-live{background:var(--purple-soft);color:#5B3FE0;}
  .badge-soon{background:var(--accent-soft);color:#C72571;}
  .badge-done{background:rgba(11,13,16,.06);color:var(--ink-muted);}

  /* ---------- breadcrumb ---------- */
  .crumbs{padding:22px 0 4px;font-size:13px;color:var(--ink-muted);}
  .crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
  .crumbs a{color:var(--ink-muted);transition:color .22s var(--ease);}
  .crumbs a:hover{color:var(--primary-deep);}
  .crumbs .sep{color:rgba(11,13,16,.24);}
  .crumbs .now{color:var(--ink);font-weight:600;}

  /* ---------- hero ---------- */
  .c3-hero{
    position:relative;
    overflow:hidden;
    margin-top:18px;
    border-radius:var(--r-panel);
    background:var(--dark-0);
    min-height:288px;
    padding:52px 48px;
    display:flex;
    align-items:center;
  }
  .c3-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:
      linear-gradient(96deg,rgba(12,14,17,.95) 0%,rgba(12,14,17,.8) 44%,rgba(12,14,17,.34) 100%),
      url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center right;
  }
  .c3-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:52px 52px;
    opacity:.6;
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2;max-width:760px;}
  .c3-hero h1{
    color:var(--on-dark);
    font-size:clamp(1.85rem,3.9vw,2.9rem);
    line-height:1.14;
    letter-spacing:-.03em;
    font-weight:800;
    margin-top:20px;
  }
  .c3-hero .lead{
    color:var(--on-dark-dim);
    font-size:16px;
    line-height:1.8;
    max-width:620px;
    margin-top:16px;
  }
  .hero-stats{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:28px;}
  .hero-stat{display:flex;align-items:center;gap:9px;color:var(--on-dark-dim);font-size:13px;}
  .hero-stat i{width:8px;height:8px;border-radius:2px;background:var(--primary);flex:none;}
  .hero-stat b{color:var(--on-dark);font-weight:600;}

  /* ---------- chips ---------- */
  .chips{display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0;}
  .chip{
    display:inline-flex;align-items:center;gap:8px;
    padding:9px 16px;
    border-radius:var(--r-sm);
    font-size:13px;
    color:var(--ink-muted);
    background:var(--white);
    border:1px solid var(--line-light);
    transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
  }
  .chip:hover{color:var(--primary-deep);border-color:rgba(18,225,168,.5);transform:translateY(-2px);}
  .chip.is-current{
    background:var(--primary-soft);
    border-color:rgba(18,225,168,.5);
    color:var(--primary-deep);
    font-weight:600;
  }
  .chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.7;}

  /* ---------- section base ---------- */
  .section{padding:var(--sec-y) 0 0;}
  .sec-head{display:flex;align-items:flex-end;gap:20px;margin-bottom:36px;}
  .sec-head .eyebrow{
    display:block;
    font-size:12px;
    letter-spacing:.16em;
    color:var(--primary-deep);
    font-weight:700;
    margin-bottom:10px;
  }
  .sec-head h2{
    font-size:clamp(1.45rem,2.6vw,2.05rem);
    line-height:1.24;
    letter-spacing:-.02em;
    font-weight:750;
    max-width:820px;
  }
  .sec-head .rule{flex:1;height:1px;background:var(--line-light);margin-bottom:14px;min-width:40px;}
  .sec-note{font-size:14px;color:var(--ink-muted);max-width:800px;margin-top:16px;}

  /* ---------- matrix table ---------- */
  .matrix-shell{
    background:var(--white);
    border:1px solid var(--line-light);
    border-radius:var(--r-panel);
    overflow:hidden;
    box-shadow:var(--shadow-light);
  }
  .matrix-scroll{overflow-x:auto;}
  .matrix{min-width:760px;}
  .matrix thead th{
    background:rgba(18,225,168,.09);
    text-align:left;
    font-size:12px;
    letter-spacing:.09em;
    color:var(--ink-muted);
    font-weight:700;
    padding:16px 24px;
    border-bottom:1px solid rgba(18,225,168,.24);
    white-space:nowrap;
  }
  .matrix tbody td{
    padding:20px 24px;
    border-bottom:1px solid var(--line-light);
    font-size:14.5px;
    vertical-align:top;
    color:#3A4149;
    line-height:1.7;
    transition:background .25s var(--ease);
  }
  .matrix tbody tr:last-child td{border-bottom:0;}
  .matrix tbody tr:hover td{background:rgba(18,225,168,.06);}
  .matrix tbody tr:hover .cell-type strong{color:var(--primary-deep);}
  .cell-type strong{display:block;font-size:16px;font-weight:700;color:var(--ink);transition:color .25s var(--ease);}
  .cell-type em{display:block;font-style:normal;font-size:12px;color:var(--ink-muted);margin-top:4px;}
  .cell-time{font-variant-numeric:tabular-nums;color:var(--ink-muted);font-size:13.5px;}

  /* ---------- compare ---------- */
  .compare{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
  .compare-col{
    background:var(--white);
    border:1px solid var(--line-light);
    border-radius:var(--r-card);
    padding:28px;
    box-shadow:var(--shadow-light);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .compare-col:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);}
  .compare-col h3{font-size:1.125rem;font-weight:750;letter-spacing:-.01em;}
  .compare-col .sub{font-size:13px;color:var(--ink-muted);margin-top:8px;}
  .compare-col ul{margin-top:20px;}
  .compare-col li{
    display:flex;
    gap:10px;
    align-items:flex-start;
    padding:13px 0;
    border-top:1px solid var(--line-light);
    font-size:14px;
    color:#3A4149;
  }
  .compare-col li i{
    width:6px;height:6px;border-radius:2px;
    background:var(--primary);
    margin-top:9px;flex:none;
  }
  .compare-col.is-alt li i{background:var(--accent);}

  /* ---------- stats ---------- */
  .stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .stat{
    background:var(--white);
    border:1px solid var(--line-light);
    border-top:2px solid var(--primary);
    border-radius:var(--r-card);
    padding:24px;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease);
  }
  .stat:hover{transform:translateY(-4px);box-shadow:var(--shadow-light);}
  .stat .num{
    font-size:2.1rem;
    line-height:1.1;
    font-weight:800;
    letter-spacing:-.03em;
    font-variant-numeric:tabular-nums;
  }
  .stat .lbl{font-size:13px;color:var(--ink-muted);margin-top:8px;}

  /* ---------- feature ---------- */
  .feature{display:grid;grid-template-columns:7fr 5fr;gap:34px;align-items:center;}
  .feature-img{
    position:relative;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line-light);
    box-shadow:var(--shadow-light);
  }
  .feature-img img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .55s var(--ease);}
  .feature-img:hover img{transform:scale(1.04);}
  .feature-img .tag{
    position:absolute;left:16px;top:16px;
    background:rgba(12,14,17,.78);
    color:var(--on-dark);
    border-radius:var(--r-badge);
    padding:6px 11px;
    font-size:12px;
    letter-spacing:.05em;
    backdrop-filter:blur(6px);
  }
  .status-card{
    background:var(--white);
    border:1px solid var(--line-light);
    border-radius:var(--r-card);
    padding:28px;
    box-shadow:var(--shadow-light);
  }
  .status-card h3{font-size:1.0625rem;font-weight:750;letter-spacing:-.01em;}
  .status-card p{font-size:14px;color:var(--ink-muted);margin-top:10px;line-height:1.8;}
  .status-line{margin-top:22px;}
  .status-line .top{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;color:var(--ink-muted);margin-bottom:9px;}
  .status-line .top b{font-size:15px;color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums;}
  .track{height:8px;border-radius:4px;background:#E6E5E0;overflow:hidden;}
  .fill{height:100%;border-radius:4px;background:linear-gradient(90deg,var(--primary),var(--purple));width:0;transition:width .9s var(--ease);}
  .status-card .track{background:#EAE9E4;}

  /* ---------- dark progress band ---------- */
  .band{
    position:relative;
    overflow:hidden;
    margin-top:var(--sec-y);
    background:var(--dark-0);
    border-radius:var(--r-panel);
    padding:52px 48px;
  }
  .band::before{
    content:"";
    position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:44px 44px;
    pointer-events:none;
  }
  .band-inner{position:relative;z-index:2;}
  .band h2{
    color:var(--on-dark);
    font-size:clamp(1.4rem,2.4vw,1.9rem);
    letter-spacing:-.02em;
    line-height:1.26;
  }
  .band .band-sub{color:var(--on-dark-dim);font-size:14.5px;margin-top:12px;max-width:680px;}
  .progress-list{display:grid;gap:26px;margin-top:36px;}
  .progress-item .top{
    display:flex;justify-content:space-between;align-items:baseline;
    font-size:14px;color:var(--on-dark);margin-bottom:10px;gap:16px;
  }
  .progress-item .top span{color:var(--on-dark-dim);font-size:13px;}
  .progress-item .top b{font-variant-numeric:tabular-nums;font-weight:700;color:var(--primary);}
  .progress-item .track{background:var(--dark-2);}
  .is-breathing .fill{animation:breathe 2.6s ease-in-out infinite;}
  @keyframes breathe{0%,100%{opacity:1;}50%{opacity:.62;}}

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    margin-top:var(--sec-y);
    background:var(--dark-1);
    border:1px solid var(--line-dark);
    border-radius:var(--r-panel);
    padding:56px 40px;
    text-align:center;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:2px;
    background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);
    background-size:220% 100%;
    animation:sweep 3.6s linear infinite;
  }
  @keyframes sweep{
    0%{background-position:0% 0;}
    100%{background-position:220% 0;}
  }
  .cta-band h2{
    color:var(--on-dark);
    font-size:clamp(1.4rem,2.4vw,1.85rem);
    letter-spacing:-.02em;
    line-height:1.3;
  }
  .cta-band p{color:var(--on-dark-dim);font-size:14.5px;margin-top:12px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;}

  /* ---------- FAQ ---------- */
  .faq{max-width:820px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--line-light);}
  .faq-item:first-child{border-top:1px solid var(--line-light);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:16px 2px;
    font-size:15px;
    font-weight:650;
    text-align:left;
    color:var(--ink);
    transition:color .22s var(--ease);
  }
  .faq-q:hover{color:var(--primary-deep);}
  .faq-q .plus{
    position:relative;
    width:16px;height:16px;flex:none;
    transition:transform .25s var(--ease);
  }
  .faq-q .plus::before,.faq-q .plus::after{
    content:"";position:absolute;background:var(--primary-deep);border-radius:2px;
  }
  .faq-q .plus::before{left:0;top:7px;width:16px;height:1.8px;}
  .faq-q .plus::after{top:0;left:7px;width:1.8px;height:16px;}
  .faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .faq-a p{padding:0 2px 20px;font-size:15px;line-height:1.85;color:var(--ink-muted);max-width:720px;}

  /* ---------- related ---------- */
  .related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .related-card{
    display:block;
    background:var(--white);
    border:1px solid var(--line-light);
    border-radius:var(--r-card);
    padding:24px;
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
  }
  .related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:rgba(18,225,168,.4);}
  .related-card .badge{margin-bottom:14px;}
  .related-card h3{font-size:1.0625rem;font-weight:700;letter-spacing:-.01em;}
  .related-card p{font-size:13.5px;color:var(--ink-muted);margin-top:8px;line-height:1.75;}
  .related-card .arrow{
    display:inline-flex;align-items:center;gap:6px;
    margin-top:16px;font-size:13px;font-weight:600;color:var(--primary-deep);
  }
  .back-row{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    align-items:center;
    margin-top:36px;
    padding-top:24px;
    border-top:1px solid var(--line-light);
  }

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:120px;
    background:var(--dark-0);
    border-top:1px solid rgba(255,255,255,.08);
    padding:64px 0 32px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:36px;
  }
  .footer-brand .brand-name{
    display:block;
    color:var(--on-dark);
    font-size:17px;
    font-weight:700;
    letter-spacing:-.02em;
  }
  .footer-brand p{
    color:var(--on-dark-dim);
    font-size:13.5px;
    line-height:1.85;
    margin-top:14px;
    max-width:300px;
  }
  .footer-col h4{
    color:var(--on-dark);
    font-size:13px;
    letter-spacing:.1em;
    font-weight:700;
    margin-bottom:16px;
  }
  .footer-col ul{display:grid;gap:11px;}
  .footer-col li{color:var(--on-dark-dim);font-size:13.5px;line-height:1.7;}
  .footer-col a{color:var(--on-dark-dim);transition:color .22s var(--ease);}
  .footer-col a:hover{color:var(--primary);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:12px 24px;
    justify-content:space-between;
    margin-top:48px;
    padding-top:22px;
    border-top:1px solid rgba(255,255,255,.08);
    color:var(--on-dark-dim);
    font-size:12.5px;
  }

  /* ---------- reveal ---------- */
  .reveal{
    opacity:0;
    transform:translateY(12px);
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  .reveal.is-in{opacity:1;transform:none;}

  /* ---------- responsive ---------- */
  @media (max-width:1180px){
    .stat-row{grid-template-columns:repeat(2,1fr);}
  }
  @media (max-width:1023px){
    :root{--sec-y:80px;}
    .nav-cards{
      position:absolute;
      top:calc(100% + 10px);
      left:0;right:0;
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:8px;
      padding:12px;
      background:var(--dark-1);
      border:1px solid var(--line-dark);
      border-radius:var(--r-panel);
      box-shadow:0 26px 50px -26px rgba(11,13,16,.8);
      opacity:0;
      visibility:hidden;
      transform:translateY(-8px);
      transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
    }
    .nav-cards.is-open{opacity:1;visibility:visible;transform:translateY(0);}
    .nav-toggle{display:flex;}
    .nav-card{justify-content:flex-start;padding:12px 14px;font-size:13.5px;}
    .nav-card.is-active::after{left:14px;right:auto;width:18px;}
    .feature{grid-template-columns:1fr;gap:24px;}
    .related{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .c3-hero{padding:44px 36px;}
  }
  @media (max-width:767px){
    :root{--sec-y:60px;}
    .container{padding:0 18px;}
    .brand{font-size:15.5px;padding:4px 10px 4px 8px;}
    .nav-actions .btn-sm{display:none;}
    .c3-hero{padding:34px 22px;min-height:0;margin-top:12px;}
    .c3-hero h1{font-size:clamp(1.6rem,7vw,2.05rem);}
    .hero-stats{gap:10px 22px;margin-top:22px;}
    .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
    .sec-head .rule{display:none;}
    .compare{grid-template-columns:1fr;}
    .stat-row{grid-template-columns:1fr 1fr;gap:14px;}
    .stat .num{font-size:1.7rem;}
    .band{padding:36px 22px;border-radius:var(--r-card);}
    .cta-band{padding:40px 22px;border-radius:var(--r-card);}
    .cta-actions .btn{width:100%;}
    .related{grid-template-columns:1fr;}
    .matrix thead th,.matrix tbody td{padding:14px 16px;}
    .footer-grid{grid-template-columns:1fr;}
    .site-footer{margin-top:72px;padding:48px 0 26px;}
    .footer-brand p{max-width:none;}
  }
  @media (max-width:520px){
    .stat-row{grid-template-columns:1fr;}
    .chips{gap:8px;}
    .chip{font-size:12.5px;padding:8px 13px;}
  }

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category4 */
:root{
  --brand:#12E1A8;
  --brand-2:#FF3E8E;
  --bridge:#7C5CFF;
  --ink:#0C0E11;
  --panel:#14171C;
  --track:#23262C;
  --paper:#F5F4F0;
  --white:#FFFFFF;
  --text:#0B0D10;
  --text-2:#6B7280;
  --text-d:#EDEDEA;
  --text-d2:#8A8F98;
  --line:rgba(11,13,16,.08);
  --line-d:rgba(255,255,255,.07);
  --r-panel:20px;
  --r-card:14px;
  --r-sm:12px;
  --r-badge:6px;
  --sh:0 1px 2px rgba(11,13,16,.04),0 12px 32px -12px rgba(11,13,16,.12);
  --sh-hi:0 2px 6px rgba(11,13,16,.06),0 20px 44px -16px rgba(11,13,16,.18);
  --max:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{max-width:var(--max);margin:0 auto;padding:0 24px;}
.section{padding:112px 0;}
.section-tight{padding:72px 0;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:16px 0 0;
  background:linear-gradient(180deg,rgba(12,14,17,.94),rgba(12,14,17,0));
}
.nav-panel{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  padding:10px;
  border-radius:var(--r-panel);
  background:var(--panel);
  border:1px solid var(--line-d);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04),0 18px 40px -24px rgba(0,0,0,.85);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 12px 8px 8px;
  border-radius:var(--r-sm);
  flex:0 0 auto;
}
.brand-mark{
  width:8px;height:8px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(18,225,168,.14);
}
.brand-name{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text-d);
  white-space:nowrap;
}
.nav-cards{
  display:flex;
  align-items:center;
  gap:6px;
  margin:0 auto;
}
.nav-card{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:13px;
  line-height:1;
  color:var(--text-d2);
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-card .ico{width:20px;height:20px;transition:transform .2s var(--ease);}
.nav-card:hover{background:rgba(255,255,255,.06);color:var(--text-d);}
.nav-card:hover .ico{transform:scale(1.06);}
.nav-card.is-active{
  color:var(--brand);
  border-color:rgba(18,225,168,.45);
  background:rgba(18,225,168,.07);
}
.nav-card.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:2px;border-radius:2px;
  background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-d);
  background:transparent;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  position:relative;
  width:16px;height:2px;border-radius:2px;background:var(--text-d);
  display:block;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;background:var(--text-d);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .18s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(1px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-primary{
  position:relative;
  overflow:hidden;
  background:var(--brand);
  color:var(--ink);
}
.btn-primary:hover{background:#0ed39d;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-ghost{
  background:transparent;
  color:var(--text-d);
  border-color:rgba(255,255,255,.22);
}
.btn-ghost:hover{border-color:rgba(18,225,168,.6);color:var(--brand);}
.btn-outline{
  background:transparent;
  color:var(--text);
  border-color:rgba(11,13,16,.16);
}
.btn-outline:hover{border-color:rgba(18,225,168,.8);color:#0a8f6b;background:rgba(18,225,168,.06);}
.btn-shine::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--bridge),var(--brand-2),transparent);
  animation:shine 2.8s linear infinite;
}
@keyframes shine{
  0%{transform:translateX(-100%);}
  100%{transform:translateX(100%);}
}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:#0a8f6b;
}
.btn-link:hover{color:var(--brand-2);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:var(--r-badge);
  font-size:12px;
  line-height:1;
  letter-spacing:.04em;
  font-weight:600;
  background:rgba(18,225,168,.14);
  color:#0a8f6b;
}
.badge-pink{background:rgba(255,62,142,.14);color:#c92b6d;}
.badge-dark{background:rgba(18,225,168,.14);color:var(--brand);}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--text-2);font-weight:500;}

/* ---------- breadcrumb ---------- */
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-d2);
  padding:22px 0 0;
}
.crumbs a{color:var(--text-d2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{opacity:.45;}
.crumbs .now{color:var(--text-d);}

/* ---------- hero ---------- */
.hero-wrap{
  background:var(--ink);
  color:var(--text-d);
  margin-top:-84px;
  padding-top:104px;
  padding-bottom:64px;
  position:relative;
  overflow:hidden;
}
.hero-wrap::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.3;
}
.hero-wrap::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,14,17,.72),rgba(12,14,17,.94) 62%,var(--ink));
}
.hero-inner{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr;
  gap:48px;
  align-items:end;
  min-height:300px;
}
.hero-copy h1{
  font-size:clamp(2rem,4.4vw,3.3rem);
  line-height:1.1;
  letter-spacing:-.03em;
  margin:16px 0 0;
  color:#fff;
}
.hero-copy .sub{
  margin-top:16px;
  font-size:17px;
  color:var(--text-d2);
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-points{
  display:flex;flex-wrap:wrap;gap:20px;
  margin-top:28px;
  padding-top:20px;
  border-top:1px solid var(--line-d);
}
.hero-points span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-d2);
}
.hero-points i{
  width:7px;height:7px;border-radius:2px;background:var(--brand);display:block;
}
.stat-col{display:grid;gap:12px;}
.stat-card{
  padding:18px 20px;
  border-radius:var(--r-card);
  background:rgba(20,23,28,.78);
  border:1px solid var(--line-d);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.stat-card .n{
  font-size:30px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--brand);
  line-height:1.1;
}
.stat-card .l{
  margin-top:4px;
  font-size:13px;
  color:var(--text-d2);
}

/* ---------- chip nav ---------- */
.chip-bar{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  box-shadow:var(--sh);
  padding:14px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:-36px;
  position:relative;
  z-index:5;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 16px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  background:var(--paper);
  transition:all .2s var(--ease);
}
.chip:hover{border-color:rgba(18,225,168,.7);color:#0a8f6b;transform:translateY(-2px);}
.chip.is-active{
  background:rgba(18,225,168,.12);
  border-color:rgba(18,225,168,.7);
  color:#0a8f6b;
}
.chip .dot{width:6px;height:6px;border-radius:2px;background:currentColor;display:block;opacity:.7;}

/* ---------- blocks ---------- */
.block-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
  margin-bottom:44px;
}
.block-head h2{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  line-height:1.2;
  letter-spacing:-.02em;
}
.block-head p{
  margin-top:10px;
  font-size:15px;
  color:var(--text-2);
  max-width:60ch;
}
.block-head .eyebrow{
  font-size:12px;
  letter-spacing:.16em;
  color:#0a8f6b;
  font-weight:700;
  text-transform:uppercase;
}

/* levels list */
.levels{display:grid;gap:28px;}
.level{
  display:grid;
  grid-template-columns:110px 1fr;
  gap:28px;
  padding:32px 0 0;
  border-top:1px solid var(--line);
  transition:transform .25s var(--ease);
}
.level:hover{transform:translateX(4px);}
.level:hover .big-num{color:rgba(18,225,168,.5);}
.big-num{
  font-size:4.4rem;
  font-weight:700;
  line-height:.9;
  letter-spacing:-.04em;
  color:rgba(18,225,168,.16);
  transition:color .25s var(--ease);
  font-variant-numeric:tabular-nums;
}
.level h3{
  font-size:1.15rem;
  line-height:1.4;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.level .desc{
  margin-top:10px;
  color:var(--text-2);
  font-size:15px;
  max-width:70ch;
}
.checks{margin-top:16px;display:grid;gap:10px;}
.checks li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:#1f242b;
}
.checks .tick{
  flex:0 0 auto;
  width:18px;height:18px;margin-top:4px;
  border-radius:5px;
  background:rgba(18,225,168,.16);
  color:#0a8f6b;
  display:grid;place-items:center;
}
.checks .tick svg{width:11px;height:11px;}
.note{
  margin-top:16px;
  padding:12px 16px;
  border-left:2px solid var(--brand);
  background:rgba(18,225,168,.07);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14px;
  color:#31404a;
}

/* figure */
.figure-block{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:32px;
  align-items:center;
  margin-top:48px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  box-shadow:var(--sh);
  overflow:hidden;
}
.figure-block .txt{padding:36px;}
.figure-block h3{font-size:1.25rem;letter-spacing:-.01em;}
.figure-block p{margin-top:12px;color:var(--text-2);font-size:15px;}
.figure-block .pic{
  position:relative;
  height:100%;
  min-height:260px;
}
.figure-block .pic img{width:100%;height:100%;object-fit:cover;}
.figure-block .pic::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,.85),rgba(255,255,255,0));
}

/* dark steps */
.dark-band{
  background:var(--ink);
  color:var(--text-d);
  position:relative;
  overflow:hidden;
}
.dark-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.6;
}
.dark-band .container{position:relative;z-index:2;}
.dark-band .block-head{border-color:var(--line-d);}
.dark-band .block-head h2{color:#fff;}
.dark-band .block-head p{color:var(--text-d2);}
.dark-band .block-head .eyebrow{color:var(--brand);}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.step-card{
  padding:26px;
  border-radius:var(--r-card);
  background:rgba(20,23,28,.86);
  border:1px solid var(--line-d);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(18,225,168,.45);}
.step-card .no{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--brand);
  font-weight:700;
}
.step-card h3{margin-top:14px;font-size:1.05rem;color:#fff;}
.step-card p{margin-top:10px;font-size:14px;color:var(--text-d2);}
.step-card .bar{
  margin-top:22px;
  height:8px;border-radius:4px;
  background:var(--track);
  overflow:hidden;
}
.step-card .bar i{
  display:block;height:100%;border-radius:4px;
  background:linear-gradient(90deg,var(--brand),var(--bridge));
  transition:width .8s var(--ease);
}
.progress-legend{
  display:flex;flex-wrap:wrap;gap:18px;
  margin-top:28px;
  font-size:13px;
  color:var(--text-d2);
}
.progress-legend span{display:inline-flex;align-items:center;gap:8px;}
.progress-legend .done{color:var(--brand);}
.legend-swatch{width:10px;height:10px;border-radius:3px;background:var(--track);display:block;}
.legend-swatch.on{background:linear-gradient(90deg,var(--brand),var(--bridge));}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:#0a8f6b;}
.faq-plus{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:8px;
  border:1px solid var(--line);
  display:grid;place-items:center;
  color:var(--text-2);
  transition:transform .25s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-plus{transform:rotate(45deg);color:#0a8f6b;border-color:rgba(18,225,168,.7);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  max-width:66ch;
}

/* CTA */
.cta-band{
  background:var(--ink);
  color:var(--text-d);
  text-align:center;
  padding:112px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta-band .container{position:relative;z-index:2;}
.cta-band h2{
  font-size:clamp(1.5rem,2.8vw,2.1rem);
  letter-spacing:-.02em;
  color:#fff;
}
.cta-band p{margin-top:14px;color:var(--text-d2);font-size:15px;}
.cta-band .btn{margin-top:32px;}

/* related */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rel-card{
  display:block;
  padding:24px;
  border-radius:var(--r-card);
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--sh);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hi);border-color:rgba(18,225,168,.55);}
.rel-card .ico-wrap{
  width:40px;height:40px;border-radius:var(--r-sm);
  display:grid;place-items:center;
  background:rgba(18,225,168,.12);
  color:#0a8f6b;
}
.rel-card h3{margin-top:16px;font-size:1rem;}
.rel-card p{margin-top:8px;font-size:14px;color:var(--text-2);}
.rel-card .go{
  margin-top:16px;
  font-size:13px;font-weight:600;color:#0a8f6b;
  display:inline-flex;align-items:center;gap:6px;
}
.rel-card.is-current{border-color:rgba(18,225,168,.75);}

/* footer */
.site-footer{
  background:var(--ink);
  color:var(--text-d2);
  padding:72px 0 32px;
  border-top:1px solid var(--line-d);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand .brand-name{display:block;font-size:18px;color:var(--text-d);margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-d2);max-width:34ch;}
.footer-col h4{font-size:14px;color:var(--text-d);margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{font-size:14px;margin-bottom:10px;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  padding-top:24px;
  border-top:1px solid var(--line-d);
  font-size:13px;
  color:var(--text-d2);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* responsive */
@media (max-width:1023px){
  .nav-cards{
    display:none;
  }
  .nav-panel.is-open .nav-cards{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:8px;
    position:absolute;
    left:0;right:0;top:calc(100% + 10px);
    background:var(--panel);
    border:1px solid var(--line-d);
    border-radius:16px;
    padding:12px;
    margin:0;
    box-shadow:0 24px 48px -20px rgba(0,0,0,.85);
  }
  .nav-panel.is-open .nav-card{justify-content:flex-start;}
  .nav-toggle{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:32px;align-items:start;}
  .stat-col{grid-template-columns:repeat(3,1fr);}
  .section{padding:80px 0;}
  .figure-block{grid-template-columns:1fr;}
  .figure-block .pic{min-height:220px;order:-1;}
  .figure-block .pic::after{background:linear-gradient(180deg,rgba(255,255,255,0),rgba(255,255,255,.7));}
  .steps{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .brand-name{font-size:15px;}
  .hero-wrap{padding-top:96px;padding-bottom:48px;margin-top:-76px;}
  .hero-copy h1{font-size:clamp(1.7rem,7vw,2.2rem);}
  .hero-copy .sub{font-size:15px;}
  .stat-col{grid-template-columns:1fr;}
  .hero-actions .btn{flex:1 1 100%;}
  .chip-bar{margin-top:-24px;padding:12px;}
  .chip{flex:1 1 auto;justify-content:center;}
  .level{grid-template-columns:1fr;gap:12px;}
  .big-num{font-size:3.2rem;}
  .block-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .figure-block .txt{padding:24px;}
  .related-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .cta-band{padding:72px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
}