/* roulang page: index */
:root{
  --bg:#0A1216;
  --bg-2:#0E1A20;
  --bg-3:#12232B;
  --primary:#2FD4C0;
  --primary-hover:#5CE6D4;
  --primary-deep:#1BA795;
  --accent:#FF8A4C;
  --text:#EAF2F4;
  --text-2:#A7BCC4;
  --text-3:#6E8A94;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --success:#45D6A0;
  --warn:#FFC24B;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-sm:12px;
  --r-lg:20px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --glass-border:1px solid rgba(255,255,255,.09);
  --dur:200ms;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html.site-html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site-body{
  margin:0;
  padding-top:72px;
  background:var(--bg);
  color:var(--text);
  font-family:"Inter","Manrope","PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.site-body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index: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:40px 40px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,rgba(0,0,0,.85),transparent 68%);
  mask-image:radial-gradient(circle at 50% 0%,rgba(0,0,0,.85),transparent 68%);
  opacity:.55;
}
main.site-main{position:relative;z-index:1}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(10,18,22,.94),rgba(10,18,22,.55));
  border-bottom:1px solid transparent;
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(10,18,22,.72);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(145deg,var(--primary),var(--primary-deep));
  color:#04120F;
  box-shadow:0 8px 20px -10px rgba(47,212,192,.7);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.06em;color:var(--text)}
.brand-text small{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:500}
.nav-links{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 14px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--accent);
  box-shadow:0 0 10px rgba(255,138,76,.85);
}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-2);background:rgba(255,255,255,.04);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:rgba(47,212,192,.5);background:rgba(47,212,192,.08)}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform var(--dur) var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:90;
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:91;
  width:86vw;max-width:360px;
  background:var(--bg-2);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;
  padding:20px 20px 28px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);
  display:grid;place-items:center;color:var(--text-2);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.drawer-close:hover{border-color:rgba(47,212,192,.5);color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  font-size:15px;color:var(--text-2);border-left:2px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.drawer-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
.drawer-link.is-active{color:var(--primary);background:rgba(47,212,192,.08);border-left-color:var(--primary);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.9}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border-radius:999px;
  transition:transform 160ms var(--ease),box-shadow 160ms var(--ease),background 160ms var(--ease),border-color 160ms var(--ease),color 160ms var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04120F;
  box-shadow:0 0 0 1px rgba(47,212,192,.55),0 10px 28px -8px rgba(47,212,192,.45);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--primary-hover),var(--primary));
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(92,230,212,.6),0 14px 34px -8px rgba(47,212,192,.55);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(255,255,255,.18);border-radius:12px;
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(47,212,192,.08);color:var(--primary-hover);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 通用 ---------- */
.glass{
  background:var(--glass-bg);
  border:var(--glass-border);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 18px 40px -24px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.06);
  border-radius:var(--r-card);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;font-weight:500;
  border:1px solid rgba(47,212,192,.35);
  background:rgba(47,212,192,.12);
  color:var(--primary-hover);
}
.badge-accent{border-color:rgba(255,138,76,.35);background:rgba(255,138,76,.12);color:var(--accent)}
.section{padding-top:56px;padding-bottom:56px;position:relative}
@media(min-width:768px){.section{padding-top:80px;padding-bottom:80px}}
@media(min-width:1024px){.section{padding-top:104px;padding-bottom:104px}}
.section-head{max-width:640px;margin-bottom:36px}
.section-eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;font-weight:600;
  color:var(--primary);margin-bottom:12px;
}
.section-title{
  font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;
  letter-spacing:.01em;color:var(--text);
}
.section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:620px}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.link-more:hover{color:var(--primary-hover);transform:translateX(2px)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Hero ---------- */
.hero{position:relative;padding:52px 0 64px;overflow:hidden}
@media(min-width:1024px){.hero{padding:76px 0 96px}}
.hero::after{
  content:"";position:absolute;top:-160px;left:-120px;
  width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,192,.32),transparent 62%);
  filter:blur(18px);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px}}
.hero-left{min-width:0}
.hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.2vw,52px);
  font-weight:700;line-height:1.25;letter-spacing:.01em;
  color:var(--text);
  max-width:660px;
}
.hero h1 .hl{color:var(--primary)}
.hero-sub{
  margin-top:18px;font-size:16px;line-height:1.85;color:var(--text-2);
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:32px}
.hero-trust li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero-trust .tick{
  width:20px;height:20px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;
  background:rgba(47,212,192,.14);color:var(--primary);font-size:11px;font-weight:700;
}
.hero-panel{
  position:relative;padding:14px;border-radius:var(--r-lg);
  max-width:520px;margin-left:auto;
}
.hero-panel img{
  width:100%;height:100%;aspect-ratio:4/3;
  object-fit:cover;border-radius:var(--r-sm);
  filter:saturate(105%);
}
.hero-panel::before{
  content:"";position:absolute;inset:14px;border-radius:var(--r-sm);
  background:linear-gradient(180deg,rgba(10,18,22,.05),rgba(10,18,22,.72));
  pointer-events:none;
}
.float-card{
  position:absolute;padding:12px 16px;border-radius:12px;
  background:linear-gradient(160deg,rgba(18,35,43,.92),rgba(14,26,32,.88));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 16px 34px -20px rgba(0,0,0,.95);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  z-index:2;
}
.float-card .fc-label{font-size:11px;letter-spacing:.08em;color:var(--text-3)}
.float-card .fc-value{font-size:15px;font-weight:700;color:var(--text);margin-top:2px;display:flex;align-items:center;gap:8px}
.fc-dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(69,214,160,.9)}
.fc-1{left:-8px;top:26px}
.fc-2{right:-6px;bottom:26px}
@media(max-width:1023px){
  .fc-1{left:8px;top:14px}
  .fc-2{right:8px;bottom:14px}
  .hero-panel{margin:0 auto;max-width:560px}
}

/* ---------- 能力 bento ---------- */
.bento{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:1024px){.bento{grid-template-columns:7fr 5fr;gap:24px}}
.bento-main{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--bg-3),var(--bg-2));
  padding:28px;
  display:flex;flex-direction:column;gap:20px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.bento-main:hover{transform:translateY(-4px);border-color:rgba(47,212,192,.35)}
.bento-main .bm-img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-sm);
  position:relative;
}
.bento-main h3{font-size:20px;font-weight:600;line-height:1.5}
.bento-main p{font-size:15px;line-height:1.85;color:var(--text-2);max-width:560px}
.bento-list{display:grid;gap:10px}
.bento-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.bento-list li::before{
  content:"";flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--primary);
}
.bento-side{display:grid;gap:20px;align-content:start}
.bento-card{
  padding:24px;border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-2);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.bento-card:hover{transform:translateY(-4px);border-color:rgba(47,212,192,.35)}
.bento-card .bc-num{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.bento-card h3{font-size:18px;font-weight:600;margin-top:10px;line-height:1.5}
.bento-card p{font-size:14px;line-height:1.8;color:var(--text-2);margin-top:8px}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(2,1fr);
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(160deg,var(--bg-2),var(--bg));
  overflow:hidden;
}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding:26px 20px;position:relative}
@media(min-width:768px){
  .stat+.stat{border-left:1px solid var(--line)}
  .stat:nth-child(3){border-left:1px solid var(--line)}
}
@media(max-width:767px){
  .stat:nth-child(even){border-left:1px solid var(--line)}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
}
.stat .num{
  font-size:clamp(32px,4vw,48px);font-weight:700;line-height:1.1;
  color:var(--primary);font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:6px;
}
.stat .num em{font-style:normal;font-size:15px;font-weight:600;color:var(--text-2)}
.stat .cap{margin-top:10px;font-size:14px;color:var(--text-3);line-height:1.6}
.stats-note{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.8}

/* ---------- 案例 ---------- */
.cases{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:768px){.cases{grid-template-columns:repeat(2,1fr);gap:28px}}
.case-card{
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(47,212,192,.35);box-shadow:var(--shadow-card)}
@media(min-width:768px){.case-card.offset{transform:translateY(32px)}.case-card.offset:hover{transform:translateY(28px)}}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-body{padding:22px 24px 26px}
.case-body h3{font-size:18px;font-weight:600;line-height:1.5;margin-top:12px}
.case-body p{font-size:14px;color:var(--text-2);line-height:1.8;margin-top:10px}
.case-kpi{
  margin-top:16px;display:flex;align-items:baseline;gap:8px;
  font-size:13px;color:var(--text-3);
}
.case-kpi b{
  font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;
}

/* ---------- 流程 ---------- */
.steps{position:relative;display:grid;grid-template-columns:1fr;gap:26px}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,1fr);gap:28px 24px}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:24px}}
.steps::before{
  content:"";position:absolute;left:14px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,rgba(47,212,192,.5),rgba(47,212,192,.04));
}
@media(min-width:1024px){
  .steps::before{
    left:0;right:0;top:15px;bottom:auto;height:1px;width:auto;
    background:linear-gradient(90deg,rgba(47,212,192,.55),rgba(47,212,192,.18),rgba(47,212,192,.02));
  }
}
.step{position:relative;padding-left:44px}
@media(min-width:1024px){.step{padding-left:0;padding-top:44px}}
.step .dot{
  position:absolute;left:0;top:0;
  width:29px;height:29px;border-radius:50%;
  display:grid;place-items:center;
  font-size:12px;font-weight:700;color:#04120F;
  background:linear-gradient(145deg,var(--primary),var(--primary-deep));
  box-shadow:0 0 0 5px rgba(10,18,22,1),0 0 18px -4px rgba(47,212,192,.8);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;font-weight:600;line-height:1.5}
.step p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-2)}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:start}
@media(min-width:900px){.news-grid{grid-template-columns:1.15fr 1fr}}
.news-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  min-width:0;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,212,192,.35);box-shadow:var(--shadow-card)}
.news-cover{display:block;overflow:hidden;background:var(--bg-3)}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 320ms var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;min-width:0}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--dur) var(--ease);
}
.news-card:hover .news-title{color:var(--primary-hover)}
.news-excerpt{
  font-size:14px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.news-arrow{
  font-size:13px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:4px;white-space:nowrap;
  transition:transform var(--dur) var(--ease);
}
.news-card:hover .news-arrow{transform:translateX(3px)}
.news-main .news-title{font-size:21px}
.news-mini .news-body{padding:18px 20px}
.news-mini .news-title{font-size:16px}
@media(min-width:900px){.news-main{grid-row:span 2}}
.empty-state{
  border:1px dashed rgba(255,255,255,.14);
  border-radius:var(--r-card);
  padding:48px 24px;
  text-align:center;
  background:rgba(255,255,255,.015);
}
.empty-state .es-icon{
  width:48px;height:48px;border-radius:14px;margin:0 auto 14px;
  display:grid;place-items:center;
  background:rgba(47,212,192,.1);color:var(--primary);font-size:20px;
}
.empty-state p{font-size:15px;color:var(--text-2)}
.empty-state a{display:inline-block;margin-top:10px;font-size:14px;font-weight:600;color:var(--primary)}
.empty-state a:hover{color:var(--primary-hover)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;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:16px;
  min-height:56px;padding:14px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--primary-hover)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  border:1px solid var(--line-2);color:var(--text-2);
  font-size:15px;line-height:1;
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item.is-open .faq-icon{
  transform:rotate(45deg);
  color:var(--primary);border-color:rgba(47,212,192,.5);background:rgba(47,212,192,.1);
}
.faq-item.is-open .faq-q{color:var(--primary-hover)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-a-inner{
  padding:0 0 20px 20px;
  border-left:3px solid transparent;
  font-size:15px;line-height:1.9;color:var(--text-2);
  transition:border-color var(--dur) var(--ease);
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary)}

/* ---------- CTA ---------- */
.cta-card{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding:28px;border-radius:var(--r-lg);
}
@media(min-width:1024px){.cta-card{grid-template-columns:6fr 6fr;gap:48px;padding:44px}}
.cta-left h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3}
.cta-left p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:480px}
.cta-points{margin-top:22px;display:grid;gap:10px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.cta-points li::before{
  content:"";flex-shrink:0;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--accent);
}
.form-grid{display:grid;gap:16px}
@media(min-width:640px){.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em}
.field label .req{color:var(--accent);margin-left:3px}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-sm);
  font-size:15px;color:var(--text);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
  appearance:none;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  background:rgba(47,212,192,.05);
  box-shadow:0 0 0 3px rgba(47,212,192,.18);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,107,107,.14);
}
.err-msg{font-size:12px;color:var(--danger);display:none}
.field.has-error .err-msg{display:block}
.form-tip{font-size:12px;color:var(--text-3);line-height:1.7}
.form-ok{
  display:none;margin-top:4px;padding:10px 14px;border-radius:var(--r-sm);
  background:rgba(69,214,160,.10);border:1px solid rgba(69,214,160,.3);
  color:var(--success);font-size:13px;
}
.form-ok.is-show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,transparent,#070D10 62%);
  padding:56px 0 26px;
  margin-top:24px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-3);max-width:320px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:var(--text-2);font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col li{
  font-size:14px;color:var(--text-3);line-height:1.7;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* 滚动浮现 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 380ms var(--ease),transform 380ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
    --bg:#0A1216;
    --bg-2:#0E1A20;
    --bg-3:#12232B;
    --primary:#2FD4C0;
    --primary-hover:#5CE6D4;
    --primary-deep:#1BA795;
    --accent:#FF8A4C;
    --text:#EAF2F4;
    --text-2:#A7BCC4;
    --text-3:#6E8A94;
    --line:rgba(255,255,255,.08);
    --line-2:rgba(255,255,255,.14);
    --success:#45D6A0;
    --warn:#FFC24B;
    --error:#FF6B6B;
    --radius:16px;
    --radius-sm:12px;
    --radius-lg:20px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
    --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:Inter,Manrope,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
    background:
      radial-gradient(520px 520px at 10% -8%, rgba(47,212,192,.16), transparent 70%),
      radial-gradient(420px 420px at 92% 4%, rgba(255,138,76,.08), transparent 70%),
      linear-gradient(180deg,#0A1216 0%,#0A1216 62%,#070D10 100%);
    color:var(--text);
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  img,svg{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input,textarea,select{font:inherit;color:inherit}
  ::selection{background:rgba(47,212,192,.3);color:#04120F}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

  .container{width:100%!important;max-width:1240px!important;margin:0 auto!important;padding:0 24px!important}
  @media (max-width:640px){.container{padding:0 20px!important}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    height:72px;display:flex;align-items:center;
    background:rgba(10,18,22,.68);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    backdrop-filter:blur(16px) saturate(140%);
    border-bottom:1px solid var(--line);
    transition:height .2s var(--ease),background .2s var(--ease);
  }
  .site-header.is-scrolled{height:60px;background:rgba(10,18,22,.9)}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}

  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    color:var(--primary);
    background:linear-gradient(160deg,rgba(47,212,192,.22),rgba(47,212,192,.04));
    border:1px solid rgba(47,212,192,.35);
    box-shadow:0 0 20px -6px rgba(47,212,192,.5);
  }
  .brand-mark svg{width:20px;height:20px}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text)}
  .brand-text small{font-size:11px;color:var(--text-3);letter-spacing:.08em;margin-top:4px}

  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-link{
    position:relative;padding:9px 14px;border-radius:10px;
    font-size:14.5px;color:var(--text-2);
    transition:color .18s var(--ease),background .18s var(--ease);
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
  .nav-link.is-active{color:var(--text);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:50%;bottom:2px;
    width:18px;height:2px;transform:translateX(-50%);border-radius:2px;
    background:var(--accent);box-shadow:0 0 8px rgba(255,138,76,.8);
  }

  .header-cta{display:flex;align-items:center;gap:12px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:999px;
    font-size:14.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
    transition:transform .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease),filter .16s var(--ease);
  }
  .btn-sm{min-height:38px;padding:0 18px;font-size:14px}
  .btn-primary{
    background:linear-gradient(135deg,#2FD4C0,#1BA795);
    color:#04120F;
    box-shadow:0 0 0 1px rgba(47,212,192,.55),0 10px 28px -8px rgba(47,212,192,.45);
  }
  .btn-primary:hover{background:linear-gradient(135deg,#5CE6D4,#2FD4C0);transform:translateY(-2px)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.94)}
  .btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text)}
  .btn-ghost:hover{border-color:var(--primary);background:rgba(47,212,192,.08);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(0);filter:brightness(.96)}
  .btn:disabled{opacity:.5;cursor:not-allowed;transform:none}

  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:10px;
    border:1px solid var(--line-2);
    align-items:center;justify-content:center;flex-direction:column;gap:4px;
    transition:background .18s var(--ease);
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s var(--ease),opacity .2s var(--ease)}
  .nav-toggle:hover{background:rgba(255,255,255,.06)}

  .drawer-mask{
    position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.6);
    opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;z-index:80;height:100%;width:86vw;max-width:360px;
    display:flex;flex-direction:column;padding:20px;overflow-y:auto;
    background:linear-gradient(180deg,#0E1A20,#0A1216);
    border-left:1px solid var(--line-2);
    transform:translateX(100%);
    transition:transform .28s var(--ease);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
  .drawer-close{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line-2);
    display:grid;place-items:center;color:var(--text-2);transition:background .18s,color .18s;
  }
  .drawer-close:hover{background:rgba(255,255,255,.06);color:var(--text)}
  .drawer-nav{display:flex;flex-direction:column;gap:4px}
  .drawer-nav a{
    display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
    font-size:15px;color:var(--text-2);transition:background .18s,color .18s;
  }
  .drawer-nav a:hover{background:rgba(255,255,255,.06);color:var(--text)}
  .drawer-nav a.is-active{color:var(--primary);background:rgba(47,212,192,.08)}
  .drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.9}
  .drawer-cta{margin-top:16px;display:flex;flex-direction:column;gap:10px}
  body.drawer-open{overflow:hidden}

  /* ---------- 面包屑与文章头 ---------- */
  .article-hero{position:relative;padding:0 0 34px;overflow:hidden}
  .article-hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    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:40px 40px;
    -webkit-mask-image:radial-gradient(600px 320px at 20% 0%,#000 0%,transparent 78%);
    mask-image:radial-gradient(600px 320px at 20% 0%,#000 0%,transparent 78%);
    opacity:.7;
  }
  .article-hero::after{
    content:"";position:absolute;top:-160px;left:-120px;width:480px;height:480px;pointer-events:none;
    background:radial-gradient(circle,rgba(47,212,192,.28),transparent 65%);
    opacity:.35;
  }
  .article-hero .container{position:relative;z-index:1}

  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    padding-top:32px;font-size:13.5px;color:var(--text-3);
  }
  .breadcrumb a{color:var(--text-3);transition:color .18s var(--ease)}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{opacity:.5}
  .breadcrumb .current{
    color:var(--text-2);max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }

  .article-head{padding-top:22px}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
    font-size:12px;letter-spacing:.04em;
    border:1px solid rgba(47,212,192,.35);
    background:rgba(47,212,192,.12);color:#8FF3E6;
  }
  .badge-accent{border-color:rgba(255,138,76,.35);background:rgba(255,138,76,.12);color:#FFC3A0}
  .badge-muted{border-color:var(--line-2);background:rgba(255,255,255,.05);color:var(--text-2)}

  .article-title{
    font-size:clamp(26px,3.4vw,38px);line-height:1.32;font-weight:700;letter-spacing:.01em;
    color:var(--text);margin:16px 0 18px;max-width:920px;
  }
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3)}
  .article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.6}
  .rule{height:1px;border:0;background:linear-gradient(90deg,var(--line-2),rgba(255,255,255,0));margin:28px 0 0}

  /* ---------- 正文布局 ---------- */
  .article-section{padding:10px 0 84px}
  .article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
  .article-layout.no-aside{grid-template-columns:minmax(0,1fr)}
  .article-main{min-width:0}
  .article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}

  @media (max-width:1023px){
    .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
    .article-aside{display:none}
  }

  .article-body{
    max-width:760px;font-size:17px;line-height:1.95;color:#C3D5DB;overflow-wrap:anywhere;
  }
  .article-body p{margin:0 0 1.2em}
  .article-body h2{
    position:relative;font-size:clamp(22px,2.4vw,28px);line-height:1.4;font-weight:700;
    color:var(--text);margin:2em 0 .8em;padding-left:16px;scroll-margin-top:96px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:2px;
    background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  }
  .article-body h3{
    font-size:19px;font-weight:600;line-height:1.5;color:var(--text);
    margin:1.6em 0 .6em;scroll-margin-top:96px;
  }
  .article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0}
  .article-body li{position:relative;padding-left:20px;margin-bottom:.5em}
  .article-body li::before{
    content:"";position:absolute;left:2px;top:.82em;width:6px;height:6px;border-radius:2px;
    background:var(--primary);
  }
  .article-body ol{counter-reset:artol}
  .article-body ol li{counter-increment:artol}
  .article-body ol li::before{
    content:counter(artol);width:auto;height:auto;top:0;left:0;
    background:none;color:var(--primary);font-weight:700;font-size:14px;
  }
  .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;transition:color .18s}
  .article-body a:hover{color:var(--primary-hover)}
  .article-body strong{color:var(--text);font-weight:600}
  .article-body blockquote{
    margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--primary);border-radius:0 12px 12px 0;
    background:rgba(255,255,255,.04);color:var(--text-2);
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{width:100%;height:auto;border-radius:16px;margin:1.6em 0 .6em}
  .article-body figure{margin:1.6em 0}
  .article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
  .article-body table{
    width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
    border:1px solid var(--line-2);border-radius:12px;overflow:hidden;
  }
  .article-body th,.article-body td{border:1px solid var(--line-2);padding:10px 14px;text-align:left}
  .article-body th{background:rgba(255,255,255,.04);color:var(--text);font-weight:600}
  .article-body hr{border:0;height:1px;background:var(--line);margin:2em 0}
  .article-body code{
    background:rgba(255,255,255,.06);border:1px solid var(--line);
    padding:2px 6px;border-radius:6px;font-size:.92em;color:var(--primary-hover);
  }

  .article-empty{
    border:1px dashed rgba(255,255,255,.14);border-radius:16px;
    padding:64px 24px;text-align:center;color:var(--text-2);max-width:760px;
  }
  .article-empty .empty-icon{
    width:52px;height:52px;margin:0 auto 18px;border-radius:14px;
    display:grid;place-items:center;color:var(--primary);
    border:1px solid rgba(47,212,192,.3);background:rgba(47,212,192,.08);
  }
  .article-empty strong{display:block;font-size:18px;color:var(--text);margin-bottom:8px}
  .article-empty p{font-size:14.5px;color:var(--text-3);margin-bottom:18px}
  .link-primary{color:var(--primary);font-weight:600;transition:color .18s var(--ease)}
  .link-primary:hover{color:var(--primary-hover)}

  .article-foot{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
    margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line);
  }
  .back-link{
    display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--text-2);
    transition:color .18s var(--ease),transform .18s var(--ease);
  }
  .back-link:hover{color:var(--primary);transform:translateX(-2px)}

  /* ---------- 侧栏 ---------- */
  .aside-card{
    background:var(--glass);
    border:1px solid rgba(255,255,255,.09);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
    border-radius:16px;padding:20px;
  }
  .aside-card h3{
    display:flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--text-3);margin-bottom:14px;
  }
  .aside-card h3::before{
    content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);
    box-shadow:0 0 8px rgba(47,212,192,.7);
  }
  .toc-list{display:flex;flex-direction:column;gap:2px}
  .toc-list a{
    display:block;padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
    font-size:13.5px;line-height:1.6;color:var(--text-2);transition:background .18s,color .18s,border-color .18s;
  }
  .toc-list a:hover{background:rgba(255,255,255,.06);color:var(--text);border-left-color:var(--primary)}
  .hot-list li+li{margin-top:10px}
  .hot-list a{
    display:flex;align-items:flex-start;gap:8px;font-size:13.5px;line-height:1.6;color:var(--text-2);
    transition:color .18s var(--ease);
  }
  .hot-list a:hover{color:var(--primary)}
  .hot-list .num{
    flex-shrink:0;width:18px;height:18px;border-radius:6px;display:grid;place-items:center;
    font-size:11px;color:var(--primary);border:1px solid rgba(47,212,192,.3);background:rgba(47,212,192,.08);
    margin-top:3px;
  }
  .aside-contact p{font-size:13.5px;line-height:1.75;color:var(--text-2);margin-bottom:14px}
  .aside-contact .btn{width:100%}

  /* ---------- 相关推荐 ---------- */
  .related{margin-top:60px;max-width:760px}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
  .section-head h2{font-size:clamp(20px,2.2vw,24px);font-weight:700;color:var(--text)}
  .section-head .count{font-size:13px;color:var(--text-3)}
  .post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
  .post-card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--bg-2);border:1px solid var(--line);border-radius:16px;
    transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .post-card:hover{transform:translateY(-4px);border-color:rgba(47,212,192,.35);box-shadow:0 20px 40px -28px rgba(0,0,0,.9)}
  .post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-3)}
  .post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
  .post-thumb::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(10,18,22,0) 30%,rgba(10,18,22,.6));
  }
  .post-card:hover .post-thumb img{transform:scale(1.04)}
  .post-body{padding:16px;display:flex;flex-direction:column;gap:9px;flex:1}
  .post-body h3{
    font-size:15.5px;font-weight:600;line-height:1.55;color:var(--text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-body p{
    font-size:13px;line-height:1.7;color:var(--text-3);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-foot{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;
    padding-top:10px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
  }
  .post-foot .cat{color:var(--primary)}
  .post-foot .arrow{color:var(--primary);transition:transform .18s var(--ease)}
  .post-card:hover .post-foot .arrow{transform:translateX(3px)}

  @media (max-width:1023px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (max-width:640px){.post-grid{grid-template-columns:minmax(0,1fr)}.related{max-width:none}}

  /* ---------- 底部行动条 ---------- */
  .cta-section{padding:0 0 96px}
  .cta-card{
    position:relative;overflow:hidden;border-radius:20px;
    border:1px solid rgba(255,255,255,.09);
    background:var(--glass),var(--bg-2);
    box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    padding:40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  }
  .cta-card::before{
    content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;pointer-events:none;
    background:radial-gradient(circle,rgba(47,212,192,.22),transparent 68%);
    opacity:.5;
  }
  .cta-card h2{position:relative;font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--text);margin-bottom:10px}
  .cta-card p{position:relative;font-size:14.5px;line-height:1.8;color:var(--text-2);max-width:560px}
  .cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}
  @media (max-width:640px){.cta-card{padding:28px 22px}.cta-actions{width:100%}.cta-actions .btn{flex:1}}

  /* ---------- 页脚 ---------- */
  .site-footer{
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(14,26,32,.65),#070D10);
    padding:56px 0 0;
  }
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px}
  .footer-brand p{font-size:13.5px;line-height:1.85;color:var(--text-3);margin-top:16px;max-width:340px}
  .footer-col h4{font-size:13px;letter-spacing:.06em;font-weight:600;color:var(--text);margin-bottom:14px}
  .footer-col ul li{font-size:13.5px;line-height:1.95;color:var(--text-3)}
  .footer-col a{color:var(--text-3);display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
  .footer-col a:hover{color:var(--primary);transform:translateX(2px)}
  .footer-bottom{
    margin-top:44px;padding:20px 0;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:12.5px;color:var(--text-3);
  }
  @media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (max-width:560px){.footer-grid{grid-template-columns:1fr}}

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

  /* ---------- 断点 ---------- */
  @media (max-width:1023px){
    .nav-links{display:none}
    .nav-toggle{display:flex}
    .header-cta .btn{display:none}
  }
  @media (max-width:640px){
    .site-header{height:64px}
    .site-header.is-scrolled{height:58px}
    .brand-mark{width:34px;height:34px;border-radius:10px}
    .brand-text strong{font-size:16px}
    .article-section{padding:6px 0 64px}
    .article-hero{padding-bottom:24px}
    .article-foot{margin-top:34px}
    .cta-section{padding-bottom:72px}
  }

/* roulang page: category1 */
:root{
  --bg:#0A1216;
  --surface-1:#0E1A20;
  --surface-2:#12232B;
  --primary:#2FD4C0;
  --primary-hover:#5CE6D4;
  --primary-deep:#1BA795;
  --accent:#FF8A4C;
  --text:#EAF2F4;
  --text-2:#A7BCC4;
  --text-3:#6E8A94;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --success:#45D6A0;
  --warn:#FFC24B;
  --danger:#FF6B6B;
  --r-card:16px;
  --r-sm:12px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
  --shadow-glow:0 0 0 1px rgba(47,212,192,.55),0 10px 28px -8px rgba(47,212,192,.45);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --font-sans:'Inter','Manrope',-apple-system,BlinkMacSystemFont,'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.page-body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:
    radial-gradient(900px 420px at 80% -8%,rgba(47,212,192,.14),transparent 68%),
    radial-gradient(700px 360px at 0% 12%,rgba(255,138,76,.06),transparent 70%),
    var(--bg);
  background-attachment:fixed;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font-family:inherit}
ul{list-style:none;margin:0;padding:0}
::selection{background:rgba(47,212,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

/* ---------- 容器与板块 ---------- */
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}
.section{padding-top:56px;padding-bottom:56px;position:relative}
@media(min-width:768px){.section{padding-top:80px;padding-bottom:80px}}
@media(min-width:1024px){.section{padding-top:104px;padding-bottom:104px}}
.section-tight{padding-top:48px;padding-bottom:48px}
@media(min-width:1024px){.section-tight{padding-top:72px;padding-bottom:72px}}

.section-head{max-width:720px;margin-bottom:36px}
@media(min-width:1024px){.section-head{margin-bottom:48px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--primary);font-weight:600}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--primary),rgba(47,212,192,0))}
.section-title{font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700;letter-spacing:.01em;margin:14px 0 0}
.section-desc{margin:14px 0 0;font-size:15.5px;color:var(--text-2);max-width:620px}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);font-size:12.5px;letter-spacing:.06em;font-weight:600;border:1px solid rgba(47,212,192,.4);background:rgba(47,212,192,.12);color:var(--primary-hover)}
.badge-accent{border-color:rgba(255,138,76,.42);background:rgba(255,138,76,.12);color:#FFB48A}
.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{display:inline-flex;align-items:center;min-height:38px;padding:0 16px;border-radius:var(--r-pill);font-size:13.5px;color:var(--text-2);border:1px solid var(--line-2);background:rgba(255,255,255,.03);transition:color var(--t),border-color var(--t),background var(--t),transform var(--t)}
.chip:hover{color:var(--primary-hover);border-color:rgba(47,212,192,.45);background:rgba(47,212,192,.08);transform:translateY(-2px)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform var(--t),background var(--t),box-shadow var(--t),border-color var(--t),color var(--t),filter var(--t)}
.btn-primary{background:linear-gradient(135deg,#2FD4C0,#1BA795);color:#04120F;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:linear-gradient(135deg,#5CE6D4,#2FD4C0);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(92,230,212,.7),0 16px 34px -10px rgba(47,212,192,.6);color:#04120F}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:var(--primary);background:rgba(47,212,192,.08);color:var(--primary-hover);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);transition:color var(--t),gap var(--t)}
.text-link:hover{color:var(--primary-hover);gap:10px}
.text-link .arrow{transition:transform var(--t)}
.text-link:hover .arrow{transform:translateX(3px)}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(10,18,22,.55);backdrop-filter:blur(12px) saturate(140%);border-bottom:1px solid var(--line);transition:background var(--t),box-shadow var(--t)}
.site-header.is-scrolled{background:rgba(10,18,22,.86);box-shadow:0 12px 32px -24px rgba(0,0,0,.95)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px;transition:height var(--t)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;color:#04120F;background:linear-gradient(140deg,#2FD4C0,#1BA795);box-shadow:0 8px 22px -12px rgba(47,212,192,.95);transition:transform var(--t)}
.brand:hover .brand-mark{transform:translateY(-1px) rotate(-4deg)}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.brand-text small{font-size:11.5px;letter-spacing:.08em;color:var(--text-3);font-weight:500}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 13px;border-radius:10px;font-size:14.5px;color:var(--text-2);white-space:nowrap;transition:background var(--t),color var(--t)}
.nav-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--accent);box-shadow:0 0 10px rgba(255,138,76,.85)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.header-actions{margin-left:10px}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;transition:background var(--t),border-color var(--t)}
.nav-toggle:hover{background:rgba(47,212,192,.1);border-color:rgba(47,212,192,.45)}
.nav-toggle svg{width:20px;height:20px}
@media(min-width:1024px){.nav-toggle{display:none}}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;height:100%;width:86vw;max-width:360px;background:linear-gradient(180deg,#0E1A20,#0A1216);border-left:1px solid var(--line);z-index:100;transform:translateX(102%);transition:transform 220ms cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;padding:20px;overflow-y:auto}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line-2);background:rgba(255,255,255,.04);color:var(--text);cursor:pointer}
.drawer-close:hover{background:rgba(255,138,76,.12);border-color:rgba(255,138,76,.4)}
.drawer-close svg{width:18px;height:18px}
.drawer-link{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--text-2);transition:background var(--t),color var(--t)}
.drawer-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
.drawer-link.is-active{color:var(--primary-hover);background:rgba(47,212,192,.1);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.9}
.drawer-foot strong{display:block;color:var(--text-2);font-weight:600;margin-bottom:4px}
@media(min-width:1024px){.mobile-drawer,.drawer-mask{display:none}}

/* ---------- Hero-lite ---------- */
.hero-lite{position:relative;overflow:hidden;padding-top:56px;padding-bottom:52px;background:var(--surface-1);border-bottom:1px solid var(--line)}
@media(min-width:1024px){.hero-lite{padding-top:72px;padding-bottom:64px}}
.hero-lite::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.16}
.hero-lite::after{content:"";position:absolute;inset:0;background:radial-gradient(620px 300px at 12% -10%,rgba(47,212,192,.24),transparent 70%),linear-gradient(180deg,rgba(10,18,22,.35),var(--bg))}
.hero-inner{position:relative;z-index:2;max-width:840px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumbs a{transition:color var(--t)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(255,255,255,.22)}
.crumbs .current{color:var(--text-2)}
.hero-title{font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;letter-spacing:.01em;margin:16px 0 0}
.hero-sub{margin:16px 0 0;font-size:16.5px;line-height:1.85;color:var(--text-2);max-width:640px}

/* ---------- 能力行卡 ---------- */
.cap-grid{display:grid;grid-template-columns:1fr}
@media(min-width:900px){.cap-grid{grid-template-columns:1fr 1fr;column-gap:56px}}
.cap-row{display:flex;gap:16px;padding:26px 0;border-bottom:1px solid var(--line);transition:background var(--t)}
.cap-row:hover{background:linear-gradient(90deg,rgba(47,212,192,.06),rgba(47,212,192,0) 70%)}
.cap-index{flex-shrink:0;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--primary);background:rgba(47,212,192,.1);border:1px solid rgba(47,212,192,.35);font-variant-numeric:tabular-nums}
.cap-body h3{font-size:19px;font-weight:600;line-height:1.5;margin:4px 0 0;transition:color var(--t)}
.cap-row:hover .cap-body h3{color:var(--primary-hover)}
.cap-body p{margin:10px 0 0;font-size:14.8px;line-height:1.85;color:var(--text-2);max-width:520px}
.dot-list{margin-top:14px;display:grid;gap:8px}
.dot-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-3);line-height:1.7}
.dot-list li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:1px;background:var(--primary);box-shadow:0 0 6px rgba(47,212,192,.7)}
.cap-body .text-link{margin-top:16px}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1fr 1fr;gap:56px}}
.media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,18,22,.08),rgba(10,18,22,.6));pointer-events:none}
.media-tag{position:absolute;left:16px;bottom:16px;z-index:2;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--text);background:rgba(10,18,22,.72);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(10px)}
.split-copy h2{margin:0}
.split-copy .p{margin:16px 0 0;font-size:15.5px;line-height:1.9;color:var(--text-2);max-width:560px}
.mini-grid{display:grid;gap:14px;margin-top:24px}
@media(min-width:640px){.mini-grid{grid-template-columns:1fr 1fr}}
.mini{border:1px solid var(--line);border-radius:var(--r-sm);padding:16px;background:rgba(255,255,255,.025);transition:border-color var(--t),transform var(--t),background var(--t)}
.mini:hover{border-color:rgba(47,212,192,.35);background:rgba(47,212,192,.05);transform:translateY(-3px)}
.mini strong{display:block;font-size:15px;font-weight:600;color:var(--text)}
.mini span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-3);line-height:1.7}

/* ---------- 指标条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(2,1fr);background:var(--surface-1);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.metric{padding:24px 18px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.metric:nth-child(1),.metric:nth-child(2){border-top:none}
.metric:nth-child(odd){border-left:none}
@media(min-width:900px){
  .metrics{grid-template-columns:repeat(4,1fr)}
  .metric{border-top:none;border-left:1px solid var(--line);padding:32px 24px}
  .metric:nth-child(odd){border-left:1px solid var(--line)}
  .metric:nth-child(1){border-left:none}
}
.metric-num{font-size:clamp(30px,3.6vw,46px);font-weight:700;line-height:1.1;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.metric-num span{font-size:.44em;font-weight:600;margin-left:6px;color:var(--text-2);letter-spacing:0}
.metric-label{margin-top:10px;font-size:13.5px;color:var(--text-3);line-height:1.6}
.metrics-note{margin-top:18px;font-size:14px;color:var(--text-3);max-width:640px}

/* ---------- 流程 ---------- */
.steps{position:relative;display:grid;gap:26px;margin-top:8px}
.steps::before{content:"";position:absolute;left:15px;top:10px;bottom:10px;width:1px;background:linear-gradient(180deg,rgba(47,212,192,.55),rgba(47,212,192,0))}
@media(min-width:900px){
  .steps{grid-template-columns:repeat(4,1fr);gap:28px}
  .steps::before{left:8px;right:8px;top:15px;bottom:auto;width:auto;height:1px;background:linear-gradient(90deg,rgba(47,212,192,.55),rgba(47,212,192,.08),rgba(47,212,192,0))}
}
.step{position:relative;padding-left:44px}
@media(min-width:900px){.step{padding-left:0;padding-top:46px}}
.step-dot{position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--primary);background:#0B1721;border:1px solid rgba(47,212,192,.45);box-shadow:0 0 0 4px rgba(47,212,192,.06);font-variant-numeric:tabular-nums}
.step h3{font-size:17px;font-weight:600;line-height:1.5;margin:0}
.step p{margin:8px 0 0;font-size:14px;line-height:1.8;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:56px;padding:18px 0;background:none;border:0;color:var(--text);font-size:16.5px;font-weight:600;line-height:1.6;text-align:left;cursor:pointer;transition:color var(--t)}
.faq-q:hover{color:var(--primary-hover)}
.faq-icon{flex-shrink:0;width:24px;height:24px;display:grid;place-items:center;color:var(--text-3);transition:transform var(--t),color var(--t)}
.faq-icon svg{width:16px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a-inner{border-left:3px solid transparent;padding:0;font-size:15px;line-height:1.9;color:var(--text-2);transition:border-color var(--t),padding var(--t)}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary);padding:0 0 20px 20px}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-lg);padding:36px 24px;background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.09);backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06)}
.cta-band::before{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,192,.28),transparent 68%);pointer-events:none}
@media(min-width:900px){.cta-band{display:flex;align-items:center;justify-content:space-between;gap:48px;padding:48px}}
.cta-copy{position:relative;z-index:2;max-width:560px}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;margin:0}
.cta-copy p{margin:12px 0 0;font-size:15px;color:var(--text-2);line-height:1.85}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
@media(min-width:900px){.cta-actions{margin-top:0;flex-shrink:0}}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,18,22,0),#070D10);padding-top:56px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
.footer-brand .brand{margin-bottom:0}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.85;color:var(--text-3);max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--text);margin:0 0 16px}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col a{display:inline-block;font-size:14px;color:var(--text-3);transition:color var(--t),transform var(--t)}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:44px;padding:20px 0 28px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 380ms cubic-bezier(.2,.7,.3,1),transform 380ms cubic-bezier(.2,.7,.3,1)}
.reveal.in-view{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
    --bg:#0A1216;
    --surface-1:#0E1A20;
    --surface-2:#12232B;
    --primary:#2FD4C0;
    --primary-hover:#5CE6D4;
    --primary-deep:#1BA795;
    --accent:#FF8A4C;
    --text:#EAF2F4;
    --text-sub:#A7BCC4;
    --text-weak:#6E8A94;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --r-card:16px;
    --r-sm:12px;
    --r-lg:20px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
    --container:1240px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"Inter","Manrope","PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  body::after{
    content:"";
    position:fixed;
    left:0;right:0;bottom:0;
    height:220px;
    background:linear-gradient(180deg,rgba(7,13,16,0),rgba(7,13,16,.75));
    pointer-events:none;
    z-index:0;
  }
  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;}
  h1,h2,h3,h4,p,ul,figure{margin:0;}
  ul{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;position:relative;z-index:1;}
  @media(min-width:768px){.container{padding:0 24px;}}
  @media(min-width:1280px){.container{padding:0 32px;}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(10,18,22,.55);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(10px) saturate(130%);
    transition:background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(10,18,22,.78);
    backdrop-filter:blur(16px) saturate(140%);
    box-shadow:0 12px 30px -22px rgba(0,0,0,.9);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    height:72px;transition:height .2s var(--ease);
  }
  .site-header.is-scrolled .header-inner{height:60px;}
  .brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;border-radius:12px;}
  .brand-mark{
    width:38px;height:38px;flex:none;border-radius:12px;display:grid;place-items:center;
    color:#04120F;background:linear-gradient(145deg,var(--primary),var(--primary-deep));
    box-shadow:0 0 0 1px rgba(47,212,192,.4),0 8px 22px -12px rgba(47,212,192,.6);
  }
  .brand-mark svg{width:20px;height:20px;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;}
  .brand-text small{font-size:11px;letter-spacing:.08em;color:var(--text-weak);}
  .nav-links{display:none;align-items:center;gap:2px;}
  @media(min-width:1024px){.nav-links{display:flex;}}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    min-height:40px;padding:0 12px;border-radius:10px;
    font-size:14.5px;color:var(--text-sub);
    transition:color .18s var(--ease),background .18s var(--ease);
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.06);}
  .nav-link.is-active{color:var(--text);}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;bottom:4px;width:18px;height:2px;border-radius:2px;
    background:var(--accent);box-shadow:0 0 10px rgba(255,138,76,.75);
  }
  .header-actions{display:flex;align-items:center;gap:10px;}
  .header-actions .btn{display:none;}
  @media(min-width:1024px){.header-actions .btn{display:inline-flex;}}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:999px;
    font-size:14.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
    transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--primary-deep));
    color:#04120F;
    box-shadow:0 0 0 1px rgba(47,212,192,.55),0 10px 28px -8px rgba(47,212,192,.45);
  }
  .btn-primary:hover{
    background:linear-gradient(135deg,var(--primary-hover),var(--primary));
    transform:translateY(-2px);
    box-shadow:0 0 0 1px rgba(92,230,212,.7),0 16px 32px -10px rgba(47,212,192,.55);
  }
  .btn-primary:active{transform:translateY(0);filter:brightness(.94);}
  .btn-outline{
    background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text);border-radius:12px;
  }
  .btn-outline:hover{border-color:var(--primary);background:rgba(47,212,192,.08);transform:translateY(-2px);}
  .btn-outline:active{transform:translateY(0);}
  .btn-sm{min-height:40px;padding:0 18px;font-size:13.5px;}

  .nav-toggle{
    display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    transition:background .18s var(--ease),border-color .18s var(--ease);
  }
  .nav-toggle:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong);}
  @media(min-width:1024px){.nav-toggle{display:none;}}
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s var(--ease),opacity .2s var(--ease);}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .drawer-mask{
    position:fixed;inset:0;z-index:90;background:rgba(0,0,0,.6);
    opacity:0;pointer-events:none;transition:opacity .22s var(--ease);
  }
  .drawer-mask.is-visible{opacity:1;pointer-events:auto;}
  .mobile-drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:95;
    width:86vw;max-width:360px;padding:20px;
    display:flex;flex-direction:column;gap:6px;
    background:var(--surface-1);border-left:1px solid var(--line);
    transform:translateX(102%);transition:transform .24s var(--ease);
    overflow-y:auto;
  }
  .mobile-drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
  .drawer-title{font-size:13px;letter-spacing:.08em;color:var(--text-weak);}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    display:grid;place-items:center;color:var(--text-sub);
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .drawer-close:hover{background:rgba(255,255,255,.07);color:var(--text);}
  .drawer-link{
    display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
    font-size:15px;color:var(--text-sub);
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .drawer-link:hover{background:rgba(255,255,255,.06);color:var(--text);}
  .drawer-link.is-active{color:var(--primary);background:rgba(47,212,192,.08);}
  .drawer-cta{margin-top:12px;}
  .drawer-contact{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13.5px;color:var(--text-weak);display:grid;gap:6px;}

  /* ---------- hero ---------- */
  .page-hero{position:relative;overflow:hidden;padding:52px 0 56px;border-bottom:1px solid var(--line);}
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
    opacity:.16;
  }
  .page-hero::after{
    content:"";position:absolute;left:-140px;top:-180px;width:480px;height:480px;border-radius:50%;
    background:radial-gradient(circle,rgba(47,212,192,.3),rgba(47,212,192,0) 66%);
    pointer-events:none;
  }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-weak);}
  .breadcrumb a{color:var(--text-sub);transition:color .18s var(--ease);}
  .breadcrumb a:hover{color:var(--primary);}
  .breadcrumb span.sep{color:rgba(255,255,255,.24);}
  .page-hero h1{
    margin-top:20px;max-width:780px;
    font-size:clamp(30px,4.2vw,50px);font-weight:700;line-height:1.25;letter-spacing:.01em;
  }
  .page-hero h1 em{font-style:normal;color:var(--primary);}
  .hero-lead{margin-top:18px;max-width:640px;font-size:16px;line-height:1.9;color:var(--text-sub);}
  .hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
  .pill{
    display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
    font-size:13.5px;color:var(--text-sub);
    transition:transform .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
  }
  .pill:hover{border-color:var(--primary);color:var(--text);background:rgba(47,212,192,.08);transform:translateY(-2px);}
  .pill.is-accent{border-color:rgba(255,138,76,.45);color:var(--accent);background:rgba(255,138,76,.08);}
  .pill.is-accent:hover{border-color:var(--accent);color:#FFD7C2;}

  /* ---------- scenario ---------- */
  .scenario{position:relative;padding:56px 0;border-bottom:1px solid var(--line);}
  @media(min-width:768px){.scenario{padding:76px 0;}}
  @media(min-width:1024px){.scenario{padding:96px 0;}}
  .scenario-grid{display:grid;gap:28px;align-items:center;}
  @media(min-width:1024px){
    .scenario-grid{grid-template-columns:5fr 7fr;gap:56px;}
    .scenario-grid.is-reverse .scenario-media{order:2;}
  }
  .media{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    border:1px solid var(--line);aspect-ratio:4/3;background:var(--surface-2);
    box-shadow:var(--shadow-card);
  }
  .media img{width:100%;height:100%;object-fit:cover;}
  .media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(10,18,22,.1),rgba(10,18,22,.55));
  }
  .media-badge{
    position:absolute;left:16px;bottom:16px;z-index:2;
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 14px;border-radius:999px;
    background:rgba(10,18,22,.72);border:1px solid rgba(255,255,255,.14);
    font-size:12.5px;color:var(--text-sub);letter-spacing:.04em;
    backdrop-filter:blur(10px);
  }
  .media-badge i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(47,212,192,.8);}
  .tag{
    display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:999px;
    border:1px solid rgba(47,212,192,.35);background:rgba(47,212,192,.12);
    font-size:12px;letter-spacing:.04em;color:var(--primary);
  }
  .scenario-body h2{
    margin-top:16px;font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;letter-spacing:.01em;
  }
  .scenario-body p{margin-top:16px;max-width:620px;font-size:16px;line-height:1.9;color:var(--text-sub);}
  .check-list{margin-top:22px;display:grid;gap:10px;}
  .check-list li{
    position:relative;padding-left:20px;font-size:15px;line-height:1.75;color:var(--text-sub);
  }
  .check-list li::before{
    content:"";position:absolute;left:0;top:.68em;width:8px;height:8px;border-radius:2px;
    background:var(--primary);box-shadow:0 0 10px rgba(47,212,192,.5);
  }
  .arrow-link{
    display:inline-flex;align-items:center;gap:8px;margin-top:24px;min-height:44px;
    font-size:14.5px;font-weight:600;color:var(--primary);
    transition:color .18s var(--ease);
  }
  .arrow-link svg{width:16px;height:16px;transition:transform .18s var(--ease);}
  .arrow-link:hover{color:var(--primary-hover);}
  .arrow-link:hover svg{transform:translateX(4px);}

  /* ---------- facts ---------- */
  .facts-section{padding:56px 0;}
  @media(min-width:768px){.facts-section{padding:76px 0;}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
  .section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
  .section-head p{max-width:520px;font-size:15px;color:var(--text-sub);}
  .facts{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  }
  @media(min-width:900px){.facts{grid-template-columns:repeat(4,minmax(0,1fr));}}
  .fact{background:var(--bg);padding:26px 20px;transition:background .2s var(--ease);}
  .fact:hover{background:var(--surface-1);}
  .fact strong{
    display:block;font-size:clamp(28px,3.6vw,42px);font-weight:700;line-height:1.1;
    color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:-.01em;
  }
  .fact strong small{font-size:14px;font-weight:600;color:var(--text-sub);margin-left:8px;letter-spacing:.02em;}
  .fact span{display:block;margin-top:10px;font-size:14px;line-height:1.6;color:var(--text-weak);}

  /* ---------- cta ---------- */
  .cta-section{padding:56px 0 72px;}
  @media(min-width:768px){.cta-section{padding:80px 0 96px;}}
  .cta-card{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    padding:32px 24px;
    background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    border:1px solid rgba(255,255,255,.09);
    backdrop-filter:blur(14px) saturate(140%);
    box-shadow:0 18px 40px -24px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.06);
    display:grid;gap:28px;
  }
  @media(min-width:768px){.cta-card{padding:40px 36px;}}
  @media(min-width:1024px){.cta-card{grid-template-columns:1.15fr .85fr;align-items:center;padding:48px;gap:48px;}}
  .cta-card::before{
    content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(47,212,192,.22),rgba(47,212,192,0) 68%);
    pointer-events:none;
  }
  .cta-card h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
  .cta-card p{margin-top:14px;max-width:520px;font-size:15.5px;line-height:1.9;color:var(--text-sub);}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .cta-list{display:grid;gap:14px;}
  .cta-item{
    display:flex;align-items:flex-start;gap:12px;
    padding:14px 16px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.04);border:1px solid var(--line);
  }
  .cta-item svg{width:18px;height:18px;flex:none;margin-top:4px;color:var(--primary);}
  .cta-item b{display:block;font-size:14.5px;font-weight:600;color:var(--text);}
  .cta-item span{display:block;font-size:13.5px;color:var(--text-weak);line-height:1.6;}

  /* ---------- footer ---------- */
  .site-footer{
    position:relative;z-index:1;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(7,13,16,0),rgba(7,13,16,.9));
    padding:56px 0 28px;
  }
  .footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
  @media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
  .footer-brand .brand{margin-bottom:4px;}
  .footer-brand p{margin-top:16px;max-width:360px;font-size:14px;line-height:1.85;color:var(--text-weak);}
  .footer-col h4{font-size:14px;font-weight:600;letter-spacing:.04em;color:var(--text);margin-bottom:14px;}
  .footer-col ul{display:grid;gap:10px;}
  .footer-col li{font-size:14px;line-height:1.7;color:var(--text-weak);}
  .footer-col a{display:inline-block;font-size:14px;color:var(--text-weak);transition:color .18s var(--ease),transform .18s var(--ease);}
  .footer-col a:hover{color:var(--primary);transform:translateX(2px);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center;
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    font-size:13px;color:var(--text-weak);
  }

  /* ---------- motion ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .38s var(--ease),transform .38s var(--ease);}
  .reveal.is-visible{opacity:1;transform:none;}
  @media(prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category3 */
:root{
    --bg:#0A1216;
    --surface:#0E1A20;
    --surface-2:#12232B;
    --primary:#2FD4C0;
    --primary-hover:#5CE6D4;
    --primary-deep:#1BA795;
    --accent:#FF8A4C;
    --text:#EAF2F4;
    --text-2:#A7BCC4;
    --text-3:#6E8A94;
    --line:rgba(255,255,255,.08);
    --line-2:rgba(255,255,255,.14);
    --success:#45D6A0;
    --warn:#FFC24B;
    --error:#FF6B6B;
    --r-card:16px;
    --r-sm:12px;
    --r-lg:20px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}

  .site-body{
    margin:0;
    background-color:var(--bg);
    background-image:radial-gradient(520px circle at 18% -6%, rgba(47,212,192,.14), transparent 68%);
    background-repeat:no-repeat;
    color:var(--text);
    font-family:"Inter","Manrope","PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }

  .site-body h1,.site-body h2,.site-body h3,.site-body h4{margin:0;font-weight:700;color:var(--text)}
  .site-body p{margin:0}
  .site-body ul{margin:0;padding:0;list-style:none}
  .site-body img{display:block;max-width:100%}
  .site-body a{color:inherit;text-decoration:none}
  .site-body button{font-family:inherit}

  .container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:640px){.container{padding-left:24px;padding-right:24px}}
  @media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:2px solid var(--primary);
    outline-offset:3px;
    border-radius:10px;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(10,18,22,.55);
    backdrop-filter:blur(10px) saturate(140%);
    -webkit-backdrop-filter:blur(10px) saturate(140%);
    border-bottom:1px solid var(--line);
    transition:background .2s var(--ease),border-color .2s var(--ease);
  }
  .site-header.is-shrink{
    background:rgba(10,18,22,.72);
    backdrop-filter:blur(16px) saturate(150%);
    -webkit-backdrop-filter:blur(16px) saturate(150%);
    border-bottom-color:var(--line-2);
  }
  .header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .2s var(--ease)}
  .site-header.is-shrink .header-inner{height:60px}

  .brand{display:inline-flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    color:#04120F;
    background:linear-gradient(135deg,var(--primary),var(--primary-deep));
    box-shadow:0 0 0 1px rgba(47,212,192,.35),0 10px 24px -12px rgba(47,212,192,.7);
  }
  .brand-mark svg{width:20px;height:20px}
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-text strong{font-size:16px;letter-spacing:.02em}
  .brand-text small{font-size:11px;letter-spacing:.08em;color:var(--text-3)}

  .nav-links{display:none;margin-left:auto;align-items:center;gap:4px}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    padding:8px 12px;border-radius:10px;
    font-size:14px;color:var(--text-2);white-space:nowrap;
    transition:color .18s var(--ease),background .18s var(--ease);
  }
  .nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
  .nav-link.is-active{color:var(--text)}
  .nav-link.is-active::after{
    content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
    width:18px;height:2px;border-radius:2px;
    background:var(--accent);
    box-shadow:0 0 10px rgba(255,138,76,.85);
  }

  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
  .nav-cta{display:none}
  @media (min-width:1024px){
    .nav-links{display:flex}
    .header-actions{margin-left:0}
    .nav-cta{display:inline-flex}
  }

  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:12px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    color:var(--text);cursor:pointer;
    transition:background .18s var(--ease),border-color .18s var(--ease);
  }
  .nav-toggle:hover{background:rgba(47,212,192,.1);border-color:rgba(47,212,192,.4)}
  .nav-toggle svg{width:20px;height:20px}
  @media (min-width:1024px){.nav-toggle{display:none}}

  /* ---------- 抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;z-index:70;
    background:rgba(0,0,0,.6);
    opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease);
  }
  .drawer{
    position:fixed;top:0;right:0;z-index:80;
    width:86vw;max-width:360px;height:100%;
    display:flex;flex-direction:column;gap:6px;
    padding:20px;overflow-y:auto;
    background:var(--surface);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .24s var(--ease);
  }
  body.drawer-open{overflow:hidden}
  body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}
  body.drawer-open .drawer{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
  .drawer-title{font-size:14px;letter-spacing:.08em;color:var(--text-3)}
  .drawer-close{
    width:40px;height:40px;display:grid;place-items:center;
    border-radius:10px;background:rgba(255,255,255,.04);
    border:1px solid var(--line);color:var(--text);cursor:pointer;
    transition:background .18s var(--ease),border-color .18s var(--ease);
  }
  .drawer-close:hover{background:rgba(255,107,107,.12);border-color:rgba(255,107,107,.4)}
  .drawer-close svg{width:18px;height:18px}
  .drawer-link{
    display:flex;align-items:center;min-height:48px;padding:0 12px;
    border-radius:10px;font-size:15px;color:var(--text-2);
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .drawer-link:hover,.drawer-link.is-active{background:rgba(47,212,192,.1);color:var(--primary)}
  .drawer-cta{margin-top:12px}
  .drawer-contact{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:1.9}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:999px;
    font-size:14px;font-weight:600;line-height:1;
    border:1px solid transparent;cursor:pointer;
    transition:transform .16s var(--ease),background .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease),filter .16s var(--ease);
  }
  .btn-primary{
    color:#04120F;
    background:linear-gradient(135deg,#2FD4C0,#1BA795);
    box-shadow:0 0 0 1px rgba(47,212,192,.55),0 10px 28px -8px rgba(47,212,192,.45);
  }
  .btn-primary:hover{
    background:linear-gradient(135deg,#5CE6D4,#2FD4C0);
    transform:translateY(-2px);
    box-shadow:0 0 0 1px rgba(92,230,212,.7),0 16px 32px -10px rgba(47,212,192,.55);
  }
  .btn-primary:active{transform:translateY(0);filter:brightness(.94)}
  .btn-ghost{
    color:var(--text);background:transparent;
    border-color:rgba(255,255,255,.18);
    border-radius:12px;
  }
  .btn-ghost:hover{border-color:var(--primary);background:rgba(47,212,192,.08);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-block{width:100%}

  /* ---------- 徽章 / 胶囊 ---------- */
  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;
    border-radius:999px;font-size:12px;letter-spacing:.04em;
    border:1px solid transparent;white-space:nowrap;
  }
  .badge-install{color:var(--primary);border-color:rgba(47,212,192,.4);background:rgba(47,212,192,.12)}
  .badge-note{color:var(--accent);border-color:rgba(255,138,76,.4);background:rgba(255,138,76,.12)}
  .badge-doc{color:#9BB6C0;border-color:rgba(155,182,192,.35);background:rgba(155,182,192,.1)}
  .badge-check{color:var(--success);border-color:rgba(69,214,160,.4);background:rgba(69,214,160,.12)}

  /* ---------- Hero-lite ---------- */
  .hero-lite{position:relative;overflow:hidden;padding:40px 0 44px;border-bottom:1px solid var(--line)}
  .hero-lite-bg{
    position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-2.png);
    background-size:cover;background-position:center;
    opacity:.16;
    -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.25) 78%,transparent 100%);
    mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.25) 78%,transparent 100%);
  }
  .hero-lite::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:radial-gradient(480px circle at 84% 8%, rgba(47,212,192,.2), transparent 70%);
  }
  .hero-lite-inner{position:relative;z-index:1}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
  .crumbs a{color:var(--text-2);transition:color .18s var(--ease)}
  .crumbs a:hover{color:var(--primary)}
  .hero-lite h1{font-size:clamp(28px,3.8vw,44px);line-height:1.25;letter-spacing:.01em;font-weight:700}
  .hero-lite-sub{max-width:660px;margin-top:14px;font-size:16px;line-height:1.85;color:var(--text-2)}
  .hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .chip{
    display:inline-flex;align-items:center;height:34px;padding:0 16px;
    border-radius:999px;font-size:13px;letter-spacing:.04em;
    color:var(--primary);
    border:1px solid rgba(47,212,192,.35);
    background:rgba(47,212,192,.08);
    transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
  }
  .chip:hover{background:rgba(47,212,192,.16);border-color:rgba(47,212,192,.6);transform:translateY(-2px);color:var(--primary-hover)}

  /* ---------- 板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:80px 0}}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
    gap:16px;margin-bottom:32px;
  }
  .eyebrow{
    display:inline-block;margin-bottom:12px;
    font-size:12px;letter-spacing:.12em;text-transform:none;
    color:var(--primary);
  }
  .site-body h2{font-size:clamp(24px,3vw,36px);line-height:1.3;letter-spacing:.01em;font-weight:700}
  .section-note{font-size:14px;color:var(--text-3)}

  /* ---------- 版本速览 ---------- */
  .stat-section{padding:36px 0 0}
  .stat-strip{
    display:grid;grid-template-columns:repeat(2,1fr);
    border:1px solid var(--line);border-radius:var(--r-card);
    background:var(--surface);overflow:hidden;
  }
  .stat-item{padding:22px 18px}
  .stat-item + .stat-item{border-left:1px solid var(--line)}
  .stat-num{
    display:flex;align-items:baseline;gap:6px;
    font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.1;
    color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.01em;
  }
  .stat-unit{font-size:13px;font-weight:600;color:var(--text-2);letter-spacing:.04em}
  .stat-label{margin-top:8px;font-size:14px;color:var(--text-3)}
  @media (max-width:1023px){
    .stat-item{border-left:0}
    .stat-item:nth-child(even){border-left:1px solid var(--line)}
    .stat-item:nth-child(n+3){border-top:1px solid var(--line)}
  }
  @media (min-width:1024px){.stat-strip{grid-template-columns:repeat(4,1fr)}}

  /* ---------- 资源列表 ---------- */
  .resource-layout{display:grid;grid-template-columns:1fr;gap:24px}
  @media (min-width:1024px){
    .resource-layout{grid-template-columns:240px 1fr;gap:40px}
    .filter-col{position:sticky;top:96px;align-self:start}
  }
  .filter-group + .filter-group{margin-top:26px}
  .filter-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin-bottom:10px}
  .filter-item{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    min-height:44px;padding:8px 12px;border-radius:10px;
    font-size:14px;color:var(--text-2);
    transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .filter-item span{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
  .filter-item:hover{background:rgba(255,255,255,.05);color:var(--text)}
  .filter-item.is-active{
    background:rgba(47,212,192,.1);color:var(--primary);
    box-shadow:inset 2px 0 0 var(--primary);
  }
  .filter-item.is-active span{color:var(--primary)}

  .doc-list{border-top:1px solid var(--line)}
  .doc-row{
    display:grid;grid-template-columns:1fr;gap:10px;
    padding:20px 16px;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
    transition:background .18s var(--ease),border-color .18s var(--ease);
  }
  .doc-row:hover{background:rgba(255,255,255,.035);border-left-color:var(--primary)}
  @media (min-width:768px){
    .doc-row{grid-template-columns:104px minmax(0,1fr) auto;gap:20px;align-items:start;padding:22px 20px}
  }
  .doc-title{font-size:17px;font-weight:600;line-height:1.5}
  .doc-title a{transition:color .18s var(--ease)}
  .doc-title a:hover{color:var(--primary)}
  .doc-summary{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2);max-width:620px}
  .doc-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
  .doc-size{font-variant-numeric:tabular-nums}
  .doc-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:13px;color:var(--primary);
    transition:color .18s var(--ease);
  }
  .doc-link span{transition:transform .18s var(--ease)}
  .doc-link:hover{color:var(--primary-hover)}
  .doc-link:hover span{transform:translateX(3px)}
  @media (min-width:768px){
    .doc-meta{flex-direction:column;align-items:flex-end;text-align:right;gap:8px}
  }

  .pager{display:flex;justify-content:center;gap:8px;margin-top:32px}
  .pager a,.pager span{
    width:36px;height:36px;border-radius:999px;
    display:grid;place-items:center;
    font-size:13px;color:var(--text-2);
    border:1px solid var(--line);
    background:rgba(255,255,255,.03);
    transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  }
  .pager a:hover{border-color:rgba(47,212,192,.5);color:var(--primary);background:rgba(47,212,192,.08)}
  .pager .is-current{background:var(--primary);border-color:var(--primary);color:#04120F;font-weight:700}

  /* ---------- 安装流程 ---------- */
  .steps{position:relative;display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
  .step{position:relative;padding:0}
  .step-num{
    display:inline-grid;place-items:center;width:26px;height:26px;border-radius:999px;
    background:var(--bg);
    border:1px solid rgba(47,212,192,.5);
    color:var(--primary);font-size:12px;font-weight:700;
    font-variant-numeric:tabular-nums;
  }
  .step-title{margin-top:14px;font-size:16px;font-weight:600}
  .step-text{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2);max-width:300px}
  @media (min-width:768px){
    .steps{grid-template-columns:repeat(4,1fr);gap:24px}
    .steps::before{
      content:"";position:absolute;top:13px;left:13px;right:13px;height:1px;
      background:linear-gradient(90deg,rgba(47,212,192,.55),rgba(47,212,192,.06));
    }
    .step{padding-right:12px}
  }

  .preview{
    position:relative;margin-top:40px;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);
    box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
  }
  .preview img{width:100%;height:100%;object-fit:cover;aspect-ratio:21/8;filter:saturate(110%)}
  .preview::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(10,18,22,.88) 0%,rgba(10,18,22,.5) 48%,rgba(10,18,22,.15) 100%);
  }
  .preview-cap{
    position:absolute;left:24px;bottom:22px;z-index:2;
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    font-size:14px;color:var(--text-2);
  }
  .preview-cap strong{color:var(--text);font-size:15px;font-weight:600}
  @media (min-width:768px){.preview-cap{left:36px;bottom:30px}}

  /* ---------- FAQ ---------- */
  .faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;min-height:56px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 0;background:none;border:0;
    color:var(--text);font-size:16px;font-weight:600;text-align:left;cursor:pointer;
    transition:color .18s var(--ease);
  }
  .faq-q:hover{color:var(--primary)}
  .faq-icon{
    flex:none;width:22px;height:22px;display:grid;place-items:center;
    color:var(--primary);
    transition:transform .22s var(--ease);
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg)}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .26s var(--ease);
  }
  .faq-a-inner{
    border-left:3px solid var(--primary);
    padding:0 0 20px 20px;margin-bottom:4px;
    font-size:15px;line-height:1.85;color:var(--text-2);
  }
  .faq-item.is-open .faq-a{max-height:400px}

  /* ---------- CTA ---------- */
  .cta-band{
    display:grid;gap:28px;
    padding:28px 24px;
    border-radius:var(--r-lg);
    background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
    border:1px solid rgba(255,255,255,.09);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card);
  }
  @media (min-width:768px){.cta-band{padding:36px 32px}}
  @media (min-width:1024px){.cta-band{grid-template-columns:1fr 1fr;gap:48px;padding:44px;align-items:center}}
  .cta-left p.cta-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:520px}
  .cta-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
  .cta-list li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
  .cta-list li::before{
    content:"";position:absolute;left:0;top:.62em;
    width:7px;height:7px;border-radius:2px;background:var(--primary);
  }
  .cta-form{display:flex;flex-direction:column;gap:16px}
  .field{display:flex;flex-direction:column;gap:6px}
  .field label{font-size:13px;color:var(--text-2)}
  .req{color:var(--accent)}
  .input,.textarea{
    width:100%;height:48px;padding:0 14px;
    border-radius:12px;
    background:rgba(255,255,255,.04);
    border:1px solid rgba(255,255,255,.1);
    color:var(--text);font-size:14px;font-family:inherit;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  }
  .input::placeholder,.textarea::placeholder{color:var(--text-3)}
  .input:hover,.textarea:hover{border-color:rgba(255,255,255,.2)}
  .input:focus,.textarea:focus{
    outline:none;
    border-color:var(--primary);
    background:rgba(255,255,255,.06);
    box-shadow:0 0 0 3px rgba(47,212,192,.18);
  }
  .field-error{display:none;font-size:12px;color:var(--error)}
  .field.has-error .field-error{display:block}
  .field.has-error .input,.field.has-error .textarea{border-color:var(--error)}
  .form-note{display:none;font-size:13px;line-height:1.7;color:var(--success)}
  .form-note.is-show{display:block}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:48px;padding:56px 0 24px;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(7,13,16,0) 0%,#070D10 78%);
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-3);max-width:340px}
  .footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px;color:var(--text)}
  .footer-col ul{display:flex;flex-direction:column;gap:10px}
  .footer-col li{font-size:14px;color:var(--text-3);line-height:1.7}
  .footer-col a{
    display:inline-block;font-size:14px;color:var(--text-3);
    transition:color .18s var(--ease),transform .18s var(--ease);
  }
  .footer-col a:hover{color:var(--primary);transform:translateX(2px)}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
    html{scroll-behavior:auto !important}
  }

/* roulang page: category4 */
:root{
    --bg:#0A1216;
    --bg-1:#0E1A20;
    --bg-2:#12232B;
    --primary:#2FD4C0;
    --primary-hover:#5CE6D4;
    --primary-deep:#1BA795;
    --accent:#FF8A4C;
    --text:#EAF2F4;
    --text-2:#A7BCC4;
    --text-3:#6E8A94;
    --line:rgba(255,255,255,.08);
    --line-2:rgba(255,255,255,.14);
    --ok:#45D6A0;
    --warn:#FFC24B;
    --err:#FF6B6B;
    --r-card:16px;
    --r-sm:12px;
    --r-lg:20px;
    --ease:cubic-bezier(.2,.7,.3,1);
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.9);
    --glass-bg:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  html body.site-body{
    margin:0;
    padding:0;
    background:var(--bg);
    color:var(--text);
    font-family:Inter,Manrope,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%;height:auto}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input,select,textarea{font:inherit;color:inherit}
  ul{margin:0;padding:0;list-style:none}
  p{margin:0}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 24px}}
  @media (min-width:1280px){.container{padding:0 32px}}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(10,18,22,.58);
    backdrop-filter:blur(10px) saturate(130%);
    -webkit-backdrop-filter:blur(10px) saturate(130%);
    border-bottom:1px solid transparent;
    transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s;
  }
  .site-header.is-scrolled{background:rgba(10,18,22,.72);border-bottom-color:var(--line);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%)}
  .header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .22s var(--ease)}
  .site-header.is-scrolled .header-inner{height:60px}

  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;color:var(--text)}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(150deg,rgba(47,212,192,.24),rgba(47,212,192,.06));
    border:1px solid rgba(47,212,192,.35);
    color:var(--primary);
    box-shadow:0 0 24px -10px rgba(47,212,192,.8);
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .brand:hover .brand-mark{border-color:rgba(47,212,192,.7);box-shadow:0 0 26px -8px rgba(47,212,192,.9)}
  .brand-mark svg{width:20px;height:20px}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-text strong{font-size:16px;font-weight:700;letter-spacing:.02em}
  .brand-text small{font-size:11px;letter-spacing:.08em;color:var(--text-3);margin-top:4px}

  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;
    padding:0 12px;border-radius:10px;
    font-size:14px;color:var(--text-2);text-decoration:none;
    transition:background .18s var(--ease),color .18s var(--ease);
    white-space:nowrap;
  }
  .nav-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
  .nav-link:active{background:rgba(255,255,255,.1)}
  .nav-link.is-active{color:var(--text);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
    width:18px;height:2px;border-radius:2px;background:var(--accent);
    box-shadow:0 0 10px rgba(255,138,76,.75);
  }

  .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 22px;border-radius:999px;
    font-size:15px;font-weight:600;line-height:1;text-decoration:none;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);
  }
  .btn-primary{
    background:linear-gradient(135deg,#2FD4C0,#1BA795);color:#04120F;
    box-shadow:0 0 0 1px rgba(47,212,192,.55),0 10px 28px -8px rgba(47,212,192,.45);
  }
  .btn-primary:hover{
    background:linear-gradient(135deg,#5CE6D4,#26C0AC);
    transform:translateY(-2px);
    box-shadow:0 0 0 1px rgba(92,230,212,.6),0 14px 32px -8px rgba(47,212,192,.55);
  }
  .btn-primary:active{transform:translateY(0);filter:brightness(.92)}
  .btn-ghost{
    background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text);
  }
  .btn-ghost:hover{
    border-color:var(--primary);background:rgba(47,212,192,.08);color:var(--primary-hover);
    transform:translateY(-2px);
  }
  .btn-ghost:active{transform:translateY(0);background:rgba(47,212,192,.14)}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  .btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

  /* ---------- Mobile drawer ---------- */
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line-2);align-items:center;justify-content:center;color:var(--text);
    transition:background .18s var(--ease),border-color .18s var(--ease);
  }
  .nav-toggle:hover{background:rgba(255,255,255,.06);border-color:rgba(47,212,192,.4)}
  .nav-toggle:active{background:rgba(255,255,255,.1)}
  .nav-toggle svg{width:20px;height:20px}

  .drawer-mask{
    position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.6);
    opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;right:0;z-index:90;height:100%;width:86vw;max-width:360px;
    background:rgba(14,26,32,.98);border-left:1px solid var(--line-2);
    transform:translateX(100%);transition:transform .28s var(--ease);
    display:flex;flex-direction:column;gap:6px;padding:20px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
  .drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--text-2);transition:color .18s,border-color .18s,background .18s}
  .drawer-close:hover{color:var(--primary);border-color:rgba(47,212,192,.5);background:rgba(47,212,192,.08)}
  .drawer-close svg{width:18px;height:18px}
  .drawer-link{
    display:flex;align-items:center;height:48px;padding:0 12px;border-radius:10px;
    font-size:15px;color:var(--text-2);text-decoration:none;
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .drawer-link:hover{background:rgba(255,255,255,.06);color:var(--text)}
  .drawer-link.is-active{color:var(--primary);background:rgba(47,212,192,.08);font-weight:600}
  .drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);line-height:2}
  .drawer-foot a{color:var(--text-2);text-decoration:none}
  .drawer-foot a:hover{color:var(--primary)}

  @media (max-width:1023px){
    .nav-links{display:none}
    .nav-toggle{display:inline-flex}
    .header-actions .btn{display:none}
  }

  /* ---------- Hero-lite ---------- */
  .hero-lite{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:56px 0 48px}
  .hero-lite::before{
    content:"";position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-2.png);
    background-size:cover;background-position:center;
    opacity:.18;filter:saturate(120%);
  }
  .hero-lite::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(10,18,22,.72),rgba(10,18,22,.96) 78%,var(--bg) 100%);
  }
  .hero-lite .container{position:relative;z-index:1}
  @media (min-width:768px){.hero-lite{padding:64px 0 56px}}

  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
  .breadcrumb a{color:var(--text-3);text-decoration:none;transition:color .18s var(--ease)}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{color:rgba(255,255,255,.22)}
  .breadcrumb .current{color:var(--text-2)}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    border:1px solid rgba(47,212,192,.35);background:rgba(47,212,192,.10);
    color:var(--primary);font-size:12px;letter-spacing:.04em;line-height:1.6;
  }
  .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(47,212,192,.14)}

  .hero-title{
    font-size:clamp(28px,3.8vw,46px);font-weight:700;line-height:1.25;letter-spacing:.01em;
    margin:20px 0 14px;max-width:820px;
  }
  .hero-lead{font-size:15px;line-height:1.9;color:var(--text-2);max-width:620px}
  @media (min-width:768px){.hero-lead{font-size:16px}}

  .pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .pill{
    display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line-2);color:var(--text-2);font-size:14px;text-decoration:none;
    transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
  }
  .pill:hover{border-color:rgba(47,212,192,.5);color:var(--primary);background:rgba(47,212,192,.08);transform:translateY(-2px)}
  .pill:active{transform:translateY(0);background:rgba(47,212,192,.14)}

  /* ---------- Sections ---------- */
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:80px 0}}
  @media (min-width:1024px){.section{padding:104px 0}}
  .section-tight{padding:48px 0}
  @media (min-width:1024px){.section-tight{padding:72px 0}}

  .kicker{font-size:12px;letter-spacing:.14em;color:var(--primary);margin:0 0 12px}
  .section-title{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;margin:0 0 14px;letter-spacing:.01em}
  .section-sub{font-size:15px;line-height:1.9;color:var(--text-2);max-width:620px;margin:0}
  .body-text{font-size:15px;line-height:1.95;color:var(--text-2);margin:0 0 14px;max-width:620px}

  .grid-6-6{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:1024px){
    .grid-6-6{grid-template-columns:1fr 1fr;gap:48px;align-items:start}
  }

  .about-img{
    width:100%;aspect-ratio:16/9;object-fit:cover;
    border-radius:var(--r-lg);border:1px solid var(--line-2);
    margin-bottom:26px;
    filter:saturate(104%);
  }

  .check-list{display:grid;gap:10px;margin-top:20px}
  .check-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.8;color:var(--text-2)}
  .check-list li::before{
    content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:2px;
    background:var(--primary);box-shadow:0 0 12px -2px rgba(47,212,192,.8);
  }
  .check-list li strong{color:var(--text);font-weight:600}

  /* Glass */
  .glass{
    background:var(--glass-bg);
    border:1px solid rgba(255,255,255,.09);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
    border-radius:var(--r-card);
  }

  .info-card{padding:24px}
  @media (min-width:768px){.info-card{padding:28px}}
  .info-card-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
  .info-card-head h2{font-size:18px;font-weight:600;margin:0;line-height:1.5}
  .info-card-sub{font-size:13px;color:var(--text-3);margin:0 0 14px}
  .info-list{display:grid}
  .info-item{
    display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.08);
  }
  .info-item:last-child{border-bottom:0;padding-bottom:0}
  .info-item dt{font-size:13px;color:var(--text-3);letter-spacing:.04em;flex:0 0 auto}
  .info-item dd{margin:0;font-size:14px;color:var(--text);text-align:right;line-height:1.7;word-break:break-word}
  .info-item dd .accent{color:var(--primary);font-weight:600}
  .info-note{
    margin-top:20px;padding:14px 16px;border-radius:var(--r-sm);
    background:rgba(255,138,76,.08);border:1px solid rgba(255,138,76,.28);
    font-size:13px;line-height:1.8;color:var(--text-2);
  }
  .info-note strong{color:var(--accent)}

  /* Step band */
  .step-band{
    display:grid;grid-template-columns:1fr;
    border-top:1px solid var(--line);border-left:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;
  }
  @media (min-width:768px){.step-band{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.step-band{grid-template-columns:repeat(4,1fr)}}
  .step{
    position:relative;padding:24px 22px;
    border-right:1px solid var(--line);border-bottom:1px solid var(--line);
    background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,0));
    transition:background .2s var(--ease);
  }
  .step:hover{background:linear-gradient(180deg,rgba(47,212,192,.07),rgba(255,255,255,0))}
  .step-num{
    font-size:12px;letter-spacing:.18em;color:var(--accent);
    font-variant-numeric:tabular-nums;font-weight:600;
  }
  .step-title{font-size:17px;font-weight:600;line-height:1.5;margin:10px 0 6px}
  .step-text{font-size:14px;line-height:1.8;color:var(--text-3);margin:0}

  /* FAQ */
  .faq{max-width:860px;margin:0 auto;width:100%}
  .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:16px;
    min-height:56px;padding:16px 0;text-align:left;
    font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
    transition:color .18s var(--ease);
  }
  .faq-q:hover{color:var(--primary-hover)}
  .faq-icon{
    flex:0 0 auto;width:28px;height:28px;border-radius:8px;
    border:1px solid var(--line-2);display:grid;place-items:center;color:var(--text-2);
    transition:transform .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  }
  .faq-icon svg{width:14px;height:14px}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:rgba(47,212,192,.5);color:var(--primary)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
  .faq-a-inner{
    padding:0 0 20px 20px;margin-bottom:4px;
    border-left:3px solid var(--primary);
    font-size:15px;line-height:1.95;color:var(--text-2);
  }

  /* Form */
  .contact-card{padding:24px;display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:768px){.contact-card{padding:32px}}
  @media (min-width:1024px){.contact-card{grid-template-columns:5fr 7fr;gap:40px;padding:40px}}
  .contact-side h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;margin:0 0 14px}
  .contact-side p{font-size:15px;line-height:1.9;color:var(--text-2);margin:0 0 12px}

  .form-grid{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
  .field{display:flex;flex-direction:column}
  .field-full{grid-column:1/-1}
  .field label{font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em}
  .req{color:var(--accent);margin-left:2px}
  .field input,.field select,.field textarea{
    width:100%;min-height:48px;padding:12px 14px;
    background:rgba(255,255,255,.04);
    border:1px solid rgba(255,255,255,.10);
    border-radius:var(--r-sm);
    color:var(--text);font-size:15px;line-height:1.6;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  }
  .field textarea{min-height:118px;resize:vertical}
  .field select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,rgba(167,188,196,.9) 50%),linear-gradient(135deg,rgba(167,188,196,.9) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px}
  .field select option{background:#0E1A20;color:var(--text)}
  .field input::placeholder,.field textarea::placeholder{color:rgba(110,138,148,.85)}
  .field input:hover,.field textarea:hover,.field select:hover{border-color:rgba(255,255,255,.2)}
  .field input:focus,.field textarea:focus,.field select:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(47,212,192,.18);
    background:rgba(255,255,255,.06);
  }
  .field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--err);box-shadow:0 0 0 3px rgba(255,107,107,.14)}
  .field .err-text{display:none;font-size:12px;color:var(--err);margin-top:6px}
  .field.has-error .err-text{display:block}
  .form-hint{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7}
  .form-note{font-size:13px;line-height:1.8;margin-top:14px;padding:12px 14px;border-radius:var(--r-sm);display:none}
  .form-note.is-ok{display:block;color:var(--ok);background:rgba(69,214,160,.08);border:1px solid rgba(69,214,160,.32)}
  .form-note.is-error{display:block;color:var(--err);background:rgba(255,107,107,.08);border:1px solid rgba(255,107,107,.32)}

  /* CTA band */
  .cta-band{
    position:relative;overflow:hidden;
    padding:32px 24px;border-radius:var(--r-lg);
    background:linear-gradient(150deg,rgba(47,212,192,.14),rgba(255,255,255,.03) 46%,rgba(255,255,255,.02));
    border:1px solid rgba(255,255,255,.10);
    box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.07);
    display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  }
  @media (min-width:768px){.cta-band{padding:40px;grid-template-columns:1.4fr .9fr;gap:32px}}
  .cta-band::after{
    content:"";position:absolute;right:-80px;top:-100px;width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle,rgba(47,212,192,.22),transparent 68%);pointer-events:none;
  }
  .cta-band > *{position:relative;z-index:1}
  .cta-title{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.4;margin:0 0 10px}
  .cta-text{font-size:14px;line-height:1.9;color:var(--text-2);margin:0;max-width:520px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  @media (min-width:768px){.cta-actions{justify-content:flex-end}}

  /* Footer */
  .site-footer{
    margin-top:0;padding:56px 0 24px;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(10,18,22,0),#070D10 72%);
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
  .footer-brand p{font-size:14px;line-height:1.9;color:var(--text-3);margin:16px 0 0;max-width:340px}
  .footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--text);margin:0 0 14px;font-weight:600}
  .footer-col ul{display:grid;gap:10px}
  .footer-col li{font-size:14px;color:var(--text-3);line-height:1.8}
  .footer-col a{
    display:inline-block;font-size:14px;color:var(--text-3);text-decoration:none;
    transition:color .18s var(--ease),transform .18s var(--ease);
  }
  .footer-col a:hover{color:var(--primary);transform:translateX(2px)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
    margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
    font-size:13px;color:var(--text-3);line-height:1.8;
  }

  /* Reveal */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

  @media (max-width:374px){
    .btn{padding:0 16px;font-size:14px}
    .brand-text small{letter-spacing:.04em}
  }