/* roulang page: index */
:root{
  --bg-deep:#0F0A1E;
  --bg-base:#150E2B;
  --surface:#1C1338;
  --surface-2:#241847;
  --line:rgba(150,130,220,.18);
  --brand:#7B4DFF;
  --brand-2:#B06CFF;
  --accent:#2DE2C6;
  --warm:#FF8A4C;
  --text:#F4F1FF;
  --text-muted:#A79FC4;
  --text-dim:#7E76A0;
  --grad:linear-gradient(120deg,#7B4DFF 0%,#B06CFF 45%,#2DE2C6 100%);
  --r-card:24px;
  --r-lg:28px;
  --r-sm:12px;
  --shadow:0 18px 40px -18px rgba(90,50,200,.55);
  --shadow-card:0 8px 24px -12px rgba(10,4,30,.7);
  --ease:200ms ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
  background:var(--bg-deep);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 480px at 10% -8%, rgba(123,77,255,.22), transparent 62%),
    radial-gradient(760px 420px at 90% 2%, rgba(45,226,198,.12), transparent 66%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.055;
  background-image:
    radial-gradient(rgba(255,255,255,.9) 1px, transparent 1px),
    radial-gradient(rgba(255,255,255,.7) 1px, transparent 1px);
  background-size:120px 120px, 200px 200px;
  background-position:0 0, 60px 80px;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea{font:inherit;color:inherit}
ul,ol{list-style:none}
::selection{background:rgba(123,77,255,.4);color:#fff}
.site-header,.site-main,.site-footer{position:relative;z-index:1}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);background-size:180% 180%;background-position:0% 50%;
  color:#fff;box-shadow:0 14px 30px -14px rgba(123,77,255,.9);
}
.btn-primary:hover{background-position:100% 50%;box-shadow:0 18px 38px -14px rgba(123,77,255,1)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--line);
}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(150,130,220,.4)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(21,14,43,.72);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(21,14,43,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:78px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:12px;flex-shrink:0;
  background:var(--grad);position:relative;
  box-shadow:0 8px 20px -10px rgba(123,77,255,.9);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  border:2px solid rgba(255,255,255,.85);
  border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(-35deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:.08em}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1;
  overflow-x:auto;scrollbar-width:none;padding:4px 0;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;
  height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--text-muted);
  border:1px solid var(--line);background:transparent;
  white-space:nowrap;transition:all var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(150,130,220,.45);background:var(--surface)}
.chip.is-active{
  background:var(--grad);color:#fff;border-color:transparent;
  box-shadow:0 8px 20px -10px rgba(123,77,255,.95);
}
.nav-cta{flex-shrink:0;min-height:42px;padding:0 22px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  background:var(--surface);flex-shrink:0;
}
.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(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-panel{
  display:none;padding:12px 0 20px;border-top:1px solid var(--line);
}
.mobile-panel.is-open{display:block}
.mobile-panel .chip{
  display:flex;width:100%;height:48px;justify-content:flex-start;padding:0 18px;margin-bottom:8px;
  border-radius:14px;
}
.mobile-panel .btn{width:100%;margin-top:10px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:72px 0 88px}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.png) center/cover no-repeat;
  opacity:.16;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 70%,transparent);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 70%,transparent);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:5.5fr 6.5fr;
  gap:56px;align-items:center;min-height:520px;
}
.tag-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--accent);
  background:rgba(45,226,198,.09);
  border:1px solid rgba(45,226,198,.28);
}
.tag-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(45,226,198,.14)}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.6vw,52px);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;
  background:linear-gradient(180deg,#FFFFFF 30%,#CBB9FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-muted);max-width:30em}
.hero-actions{display:flex;gap:12px;margin-top:32px;flex-wrap:wrap}
.hero-trust{margin-top:24px;font-size:13px;color:var(--text-dim);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-visual .visual-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  aspect-ratio:16/10;
  background:var(--surface);
}
.hero-visual .visual-frame img{width:100%;height:100%;object-fit:cover;opacity:.92}
.hero-visual .visual-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,10,30,0) 40%,rgba(15,10,30,.7) 100%);
}
.float-badge{
  position:absolute;right:16px;bottom:16px;
  display:flex;flex-direction:column;gap:2px;
  padding:12px 16px;border-radius:16px;
  background:var(--surface-2);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  z-index:2;
}
.float-badge strong{font-size:22px;font-weight:800;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums}
.float-badge span{font-size:12px;color:var(--text-muted)}

/* ============ 板块通用 ============ */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:640px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:var(--grad);
}
.section-head p{margin-top:14px;color:var(--text-muted);font-size:15px;padding-left:16px}

/* ============ 数据徽章条 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  padding:20px;border-radius:20px;
  background:var(--surface-2);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.4)}
.stat-num{font-size:26px;font-weight:800;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-num.warm{color:var(--warm)}
.stat-label{margin-top:6px;font-size:12px;color:var(--text-muted);letter-spacing:.02em}

/* ============ 步骤卡 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{
  position:relative;padding:28px 24px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.4);box-shadow:var(--shadow)}
.step-no{
  font-size:13px;font-weight:800;letter-spacing:.12em;
  color:var(--brand-2);font-variant-numeric:tabular-nums;
}
.step-card h3{margin-top:12px;font-size:18px;font-weight:600}
.step-card p{margin-top:10px;font-size:14px;color:var(--text-muted);line-height:1.8}

/* ============ 奖励错落网格 ============ */
.reward-grid{
  display:grid;grid-template-columns:1.1fr 1fr .82fr;
  grid-auto-rows:150px;gap:24px;
}
.reward-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:22px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.reward-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.45);box-shadow:var(--shadow)}
.reward-card img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.28;transition:opacity var(--ease),transform 400ms ease;
}
.reward-card:hover img{opacity:.4;transform:scale(1.04)}
.reward-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(28,19,56,.25) 0%,rgba(15,10,30,.92) 78%);
}
.reward-body{position:relative;z-index:2}
.reward-card h3{font-size:18px;font-weight:600}
.reward-card p{margin-top:8px;font-size:14px;color:var(--text-muted);line-height:1.7}
.reward-card.r-a{grid-row:span 2;grid-column:1}
.reward-card.r-b{grid-row:span 2;grid-column:2}
.reward-card.r-c{grid-row:1;grid-column:3}
.reward-card.r-d{grid-row:2;grid-column:3}
.reward-card.r-c,.reward-card.r-d{padding:18px}
.reward-card.r-c h3,.reward-card.r-d h3{font-size:16px}
.reward-card.r-c p,.reward-card.r-d p{font-size:13px}
.mini-badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(45,226,198,.12);color:var(--accent);
  border:1px solid rgba(45,226,198,.26);
  margin-bottom:12px;width:fit-content;
}
.mini-badge.warm{background:rgba(255,138,76,.12);color:var(--warm);border-color:rgba(255,138,76,.28)}
.mini-badge.brand{background:rgba(123,77,255,.16);color:#C9B4FF;border-color:rgba(123,77,255,.32)}

/* ============ 任务进度 ============ */
.task-panel{
  border-radius:var(--r-lg);padding:40px;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.task-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:32px}
.task-step{display:flex;flex-direction:column;align-items:flex-start;gap:10px;position:relative}
.task-step::before{
  content:"";position:absolute;top:18px;left:44px;right:-16px;height:1px;background:var(--line);
}
.task-step:last-child::before{display:none}
.task-step.done::before{background:var(--grad)}
.node{
  width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;flex-shrink:0;position:relative;z-index:2;
  font-variant-numeric:tabular-nums;
}
.node.done{background:var(--grad);color:#fff}
.node.current{border:2px solid var(--brand-2);color:var(--brand-2);background:var(--surface-2)}
.node.current::after{
  content:"";position:absolute;inset:-6px;border-radius:50%;
  border:2px solid rgba(176,108,255,.4);
  animation:pulseRing 2s ease-out infinite;
}
.node.todo{border:1px solid var(--line);color:var(--text-dim);background:transparent}
@keyframes pulseRing{
  0%{transform:scale(.85);opacity:.9}
  100%{transform:scale(1.35);opacity:0}
}
.task-step h4{font-size:15px;font-weight:600}
.task-step span{font-size:12px;color:var(--text-dim)}
.task-step .state{font-size:12px;font-weight:600}
.state.done{color:var(--accent)}
.state.current{color:var(--warm)}
.state.todo{color:var(--text-dim)}
.progress-row{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.progress-track{flex:1;height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden}
.progress-fill{height:100%;width:62%;border-radius:999px;background:var(--grad)}
.progress-num{font-size:13px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.task-desc{font-size:14px;color:var(--text-muted);margin-bottom:24px}

/* ============ 最新信息 ============ */
.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px}
.filter-row .chip{height:34px;font-size:13px;padding:0 16px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  border-radius:20px;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  position:relative;
}
.news-card::before{
  content:"";height:3px;width:100%;background:var(--grad);opacity:.75;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.45);box-shadow:var(--shadow)}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.cat-pill{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;color:#C9B4FF;background:rgba(123,77,255,.16);border:1px solid rgba(123,77,255,.3);
}
.news-time{font-size:12px;color:var(--text-dim);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.news-card h3{font-size:17px;font-weight:600;line-height:1.5;transition:color var(--ease)}
.news-card:hover h3{color:var(--brand-2)}
.news-card p{margin-top:10px;font-size:14px;color:var(--text-muted);line-height:1.75}
.news-more{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--accent);
}
.news-more svg{transition:transform var(--ease)}
.news-card:hover .news-more svg{transform:translateX(4px)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  border:1.5px dashed var(--line);border-radius:var(--r-card);
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:40px;text-align:center;
}
.empty-state p{color:var(--text-muted);font-size:14px}
.empty-icon{width:44px;height:44px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand-2);font-size:20px}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border-radius:16px;background:var(--surface);border:1px solid var(--line);
  overflow:hidden;transition:border-color var(--ease),background var(--ease);
}
.faq-item:hover{border-color:rgba(150,130,220,.4)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;cursor:pointer;
  list-style:none;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--grad);opacity:0;transition:opacity var(--ease);
}
.faq-item[open] summary::before{opacity:1}
.faq-icon{
  width:24px;height:24px;flex-shrink:0;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);font-size:15px;line-height:1;
  transition:transform var(--ease),color var(--ease),border-color var(--ease);
}
.faq-item[open] .faq-icon{transform:rotate(180deg);color:var(--accent);border-color:rgba(45,226,198,.4)}
.faq-answer{padding:0 24px 22px 24px;font-size:15px;color:var(--text-muted);line-height:1.85}

/* ============ CTA 带 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  border-radius:var(--r-lg);padding:44px;
  background:
    linear-gradient(120deg,rgba(123,77,255,.24) 0%,rgba(176,108,255,.14) 50%,rgba(45,226,198,.14) 100%);
  border:1px solid rgba(150,130,220,.28);
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;line-height:1.3}
.cta-band p{margin-top:10px;color:var(--text-muted);font-size:15px;max-width:46em}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;border-top:1px solid var(--line);
  background:rgba(15,10,30,.6);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-name{font-size:17px}
.footer-desc{font-size:14px;color:var(--text-muted);line-height:1.8;max-width:30em}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col li{font-size:14px;color:var(--text-muted);transition:color var(--ease)}
.footer-col a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.footer-contact span{display:block;font-size:14px;color:var(--text-muted);margin-bottom:10px}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-dim);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px;min-height:auto}
  .hero-visual{order:2}
  .section{padding:72px 0}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:1fr;gap:16px}
  .step-card{padding:24px 20px}
  .reward-grid{grid-template-columns:1fr 1fr;grid-auto-rows:auto}
  .reward-card{grid-column:auto!important;grid-row:auto!important;min-height:180px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-chips,.nav-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .task-panel{padding:28px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .brand-name{font-size:16px}
  .brand-sub{display:none}
  .nav-wrap{height:68px;gap:12px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{padding-left:14px}
  .section-head p{padding-left:14px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .stat-grid{display:flex;overflow-x:auto;gap:14px;padding-bottom:8px;scrollbar-width:none}
  .stat-grid::-webkit-scrollbar{display:none}
  .stat-card{min-width:172px;flex-shrink:0}
  .reward-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .task-steps{grid-template-columns:1fr;gap:20px}
  .task-step::before{display:none}
  .task-step{flex-direction:row;align-items:center;flex-wrap:wrap;gap:12px}
  .faq-item summary{padding:18px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px 18px;font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:28px 22px}
  .cta-band .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero h1{font-size:29px;line-height:1.25}
  .float-badge{right:12px;bottom:12px;padding:10px 12px}
  .float-badge strong{font-size:18px}
  .stat-num{font-size:22px}
}

/* roulang page: category1 */
:root{
  --bg-deep:#0F0A1E;
  --bg-base:#150E2B;
  --surface:#1C1338;
  --surface-2:#241847;
  --line:rgba(150,130,220,.18);
  --brand:#7B4DFF;
  --brand-2:#B06CFF;
  --accent:#2DE2C6;
  --warm:#FF8A4C;
  --text:#F4F1FF;
  --text-muted:#A79FC4;
  --text-dim:#7E76A0;
  --grad:linear-gradient(120deg,#7B4DFF 0%,#B06CFF 45%,#2DE2C6 100%);
  --radius:24px;
  --radius-lg:28px;
  --shadow:0 18px 40px -18px rgba(90,50,200,.55);
  --shadow-card:0 8px 24px -12px rgba(10,4,30,.7);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-base);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(680px 420px at 12% -6%, rgba(123,77,255,.22), transparent 65%),
    radial-gradient(560px 380px at 88% 0%, rgba(45,226,198,.12), transparent 68%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.05;
  background-image:radial-gradient(circle, #ffffff 1px, transparent 1px);
  background-size:130px 130px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-0.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:8px;
}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
main,.site-footer{position:relative;z-index:1}
section{position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(21,14,43,.92);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;grid-template-columns:auto 1fr auto;
  align-items:center;gap:20px;min-height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:var(--grad);
  position:relative;box-shadow:0 10px 24px -12px rgba(123,77,255,.9);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:50%;
  border:2px solid rgba(255,255,255,.75);border-bottom-color:transparent;
  transform:rotate(-35deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-0.01em;color:var(--text)}
.brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:.06em}
.nav-chips{
  display:flex;align-items:center;justify-content:center;
  gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  color:var(--text-muted);font-size:14px;font-weight:500;
  white-space:nowrap;transition:all .2s ease;cursor:pointer;
}
.chip:hover{color:var(--text);border-color:rgba(176,108,255,.5);background:var(--surface-2)}
.chip.is-active{
  background:var(--grad);color:#fff;border-color:transparent;
  box-shadow:0 8px 22px -10px rgba(123,77,255,.95);
}
.header-cta{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 18px 40px -18px rgba(90,50,200,.55)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 22px 46px -18px rgba(123,77,255,.85)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(176,108,255,.5)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.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 .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-panel{display:none;border-top:1px solid var(--line);padding:14px 0 18px;background:rgba(15,10,30,.98)}
.mobile-panel.is-open{display:block}
.mobile-panel .nav-chips{flex-direction:column;align-items:stretch;overflow:visible;gap:8px}
.mobile-panel .chip{height:48px;justify-content:flex-start;padding:0 18px;font-size:15px}
.mobile-panel .btn{width:100%;margin-top:12px}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow:hidden;
  font-size:13px;color:var(--text-muted);padding:18px 0 4px;white-space:nowrap;
}
.crumb a{color:var(--text-muted);transition:color .2s ease}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{color:var(--text-dim)}
.crumb .now{color:var(--text);overflow:hidden;text-overflow:ellipsis}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:56px 0 64px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  opacity:.24;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg, rgba(15,10,30,.96) 0%, rgba(21,14,43,.78) 55%, rgba(21,14,43,.5) 100%);
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(45,226,198,.35);
  background:rgba(45,226,198,.1);
  color:var(--accent);font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.hero-title{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.15;
  letter-spacing:-0.02em;margin:20px 0 18px;
}
.hero-title .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:16.5px;color:var(--text-muted);max-width:44ch;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-note{margin-top:20px;font-size:13px;color:var(--text-dim);letter-spacing:.02em}
.hero-visual{position:relative}
.hero-media{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);aspect-ratio:16/10;position:relative;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(15,10,30,.05) 40%, rgba(15,10,30,.6) 100%);
}
.float-badge{
  position:absolute;right:16px;bottom:-18px;
  background:var(--surface-2);border:1px solid var(--line);
  border-radius:16px;padding:12px 16px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:2px;min-width:132px;
}
.float-badge b{font-size:22px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2}
.float-badge span{font-size:12px;color:var(--text-muted)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-tag{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.section-title{font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25}
.section-title .bar{
  display:inline-block;width:4px;height:.92em;border-radius:4px;
  background:var(--grad);vertical-align:-2px;margin-right:12px;
}
.section-desc{margin-top:14px;color:var(--text-muted);font-size:15.5px;max-width:62ch}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:60px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:17px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,#7B4DFF,#B06CFF 48%,#2DE2C6);
  opacity:.6;
}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:-60px;top:0;width:36px;height:36px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--surface-2);border:1px solid var(--line);color:var(--text);
}
.tl-item.is-done .tl-node{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 24px -12px rgba(123,77,255,.9)}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:20px 22px;box-shadow:var(--shadow-card);transition:all .2s ease;
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(123,77,255,.4);box-shadow:0 18px 36px -20px rgba(90,50,200,.8)}
.tl-card h3{font-size:17px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tl-card p{font-size:14.5px;color:var(--text-muted);line-height:1.8}
.mini-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(45,226,198,.12);color:var(--accent);border:1px solid rgba(45,226,198,.28);
}
.mini-badge.warm{background:rgba(255,138,76,.12);color:var(--warm);border-color:rgba(255,138,76,.3)}
.mini-badge.violet{background:rgba(176,108,255,.14);color:var(--brand-2);border-color:rgba(176,108,255,.32)}

/* ---------- split blocks ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:64px}
.split:last-child{margin-bottom:0}
.split.reverse .split-media{order:2}
.split-media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);aspect-ratio:16/10;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.split-media:hover img{transform:scale(1.03)}
.split-body h3{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin-bottom:14px}
.split-body > p{color:var(--text-muted);font-size:15.5px;margin-bottom:20px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed rgba(150,130,220,.16);
  font-size:14.5px;color:var(--text-muted);
}
.check-list li:last-child{border-bottom:0}
.check-list .dot{
  width:20px;height:20px;border-radius:999px;flex:none;margin-top:4px;
  background:rgba(45,226,198,.14);border:1px solid rgba(45,226,198,.4);
  display:flex;align-items:center;justify-content:center;
}
.check-list .dot::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.check-list strong{color:var(--text);font-weight:600}

/* ---------- info cards ---------- */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-card);transition:all .2s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.42);box-shadow:0 22px 44px -24px rgba(90,50,200,.9)}
.info-card h3{font-size:17px;font-weight:600;margin:14px 0 8px}
.info-card p{font-size:14.5px;color:var(--text-muted)}
.info-ico{
  width:42px;height:42px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(123,77,255,.16);border:1px solid rgba(176,108,255,.3);
  color:var(--brand-2);font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}

/* ---------- faq ---------- */
.faq-list{max-width:840px}
.faq-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:16px;margin-bottom:12px;overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(123,77,255,.45)}
.faq-item.is-open::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;line-height:1.6;
}
.faq-ico{
  width:24px;height:24px;flex:none;border-radius:999px;position:relative;
  border:1px solid var(--line);transition:transform .24s ease,background .2s ease;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-muted);
  border-radius:2px;transform:translate(-50%,-50%);
}
.faq-ico::before{width:10px;height:2px}
.faq-ico::after{width:2px;height:10px;transition:opacity .2s ease}
.faq-item.is-open .faq-ico{transform:rotate(180deg);background:rgba(123,77,255,.18)}
.faq-item.is-open .faq-ico::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 22px 20px;font-size:14.8px;line-height:1.8;color:var(--text-muted)}

/* ---------- cta band ---------- */
.cta-band{
  border-radius:var(--radius-lg);padding:44px 40px;
  border:1px solid rgba(123,77,255,.38);
  background:linear-gradient(120deg, rgba(123,77,255,.2) 0%, rgba(176,108,255,.12) 45%, rgba(45,226,198,.1) 100%);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:700}
.cta-band p{margin-top:10px;color:var(--text-muted);font-size:15px;max-width:52ch}

/* ---------- footer ---------- */
.site-footer{
  margin-top:40px;border-top:1px solid var(--line);
  background:var(--bg-deep);padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.brand-name-f{font-size:16px;font-weight:800;color:var(--text)}
.footer-desc{font-size:14px;color:var(--text-muted);line-height:1.85;max-width:38ch}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-muted);transition:color .2s ease}
.footer-col ul a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
.footer-contact span{display:block;font-size:14px;color:var(--text-muted);margin-bottom:10px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-dim);letter-spacing:.02em;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{aspect-ratio:16/9}
  .split{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-media{order:0}
  .info-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  .nav-chips,.header-cta{display:none}
  .nav-toggle{display:flex}
  .header-inner{grid-template-columns:1fr auto;min-height:64px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .timeline{padding-left:52px}
  .timeline::before{left:15px}
  .tl-node{left:-52px;width:32px;height:32px;font-size:12px}
  .info-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 22px;text-align:left}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;font-size:12px}
  .page-hero{padding:40px 0 52px}
  .float-badge{right:10px;bottom:-14px;padding:10px 14px;min-width:118px}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .hero-title{font-size:28px}
  .brand-name{font-size:15.5px}
  .brand-sub{font-size:10.5px}
  .tl-card{padding:18px 16px}
  .faq-q{padding:16px 16px;font-size:15px}
  .faq-a p{padding:0 16px 18px}
}

/* roulang page: article */
:root{
  --bg-deep:#0F0A1E;
  --bg-base:#150E2B;
  --surface:#1C1338;
  --surface-2:#241847;
  --line:rgba(150,130,220,.18);
  --brand:#7B4DFF;
  --brand-2:#B06CFF;
  --accent:#2DE2C6;
  --warm:#FF8A4C;
  --text:#F4F1FF;
  --text-muted:#A79FC4;
  --text-dim:#7E76A0;
  --grad:linear-gradient(120deg,#7B4DFF 0%,#B06CFF 45%,#2DE2C6 100%);
  --radius-card:24px;
  --radius-lg:28px;
  --radius-input:12px;
  --shadow-card:0 8px 24px -12px rgba(10,4,30,.7);
  --shadow-hover:0 18px 40px -18px rgba(90,50,200,.55);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
  --space-5:24px; --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--bg-base);
  background-image:
    radial-gradient(900px 480px at 8% -10%, rgba(123,77,255,.22), transparent 70%),
    radial-gradient(780px 420px at 94% -6%, rgba(45,226,198,.12), transparent 70%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(circle, rgba(244,241,255,.06) 1px, transparent 1px);
  background-size:34px 34px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.page-shell{position:relative;z-index:1}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(21,14,43,.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(21,14,43,.92);
  border-bottom-color:var(--line);
}
.header-inner{
  max-width:1200px;
  margin:0 auto;
  padding:12px 24px;
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--text);
  flex:0 0 auto;
}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:12px;
  background:var(--grad);
  position:relative;
  flex:0 0 auto;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14), 0 8px 20px -10px rgba(123,77,255,.95);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  border-radius:50%;
  background:radial-gradient(circle at 32% 30%, #fff, rgba(255,255,255,.2) 58%, transparent 72%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:.1em}
.nav-chips{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  overflow-x:auto;
  padding:4px 2px;
  scrollbar-width:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-muted);
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.chip:hover{
  color:var(--text);
  border-color:rgba(176,108,255,.45);
  background:var(--surface-2);
}
.chip.is-active{
  background:var(--grad);
  color:#fff;
  border-color:transparent;
  box-shadow:0 8px 22px -10px rgba(123,77,255,.95);
}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text);
  cursor:pointer;
  margin-left:auto;
  transition:background .2s ease, border-color .2s ease;
}
.nav-toggle:hover{background:var(--surface-2);border-color:rgba(176,108,255,.4)}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .25s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(21,14,43,.98);
  padding:14px 20px 20px;
}
.mobile-panel.is-open{display:block}
.mobile-panel .chip{
  display:flex;
  width:100%;
  height:48px;
  justify-content:flex-start;
  padding:0 18px;
  margin-bottom:8px;
}
.mobile-panel .btn{width:100%;margin-top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 24px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, filter .2s ease;
}
.btn-primary{
  background:var(--grad);
  color:#fff;
  box-shadow:0 12px 28px -14px rgba(123,77,255,.95);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 18px 36px -16px rgba(123,77,255,1);
}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line);
}
.btn-ghost:hover{
  background:var(--surface-2);
  border-color:rgba(176,108,255,.4);
}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-muted);
  padding:26px 0 6px;
  white-space:nowrap;
  overflow:hidden;
}
.crumbs a{
  color:var(--text-muted);
  text-decoration:none;
  transition:color .2s ease;
}
.crumbs a:hover{color:var(--text)}
.crumbs .sep{color:var(--text-dim)}
.crumbs .current{
  color:var(--text);
  overflow:hidden;
  text-overflow:ellipsis;
  min-width:0;
}

/* ============ 文章头 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:40px;
  padding-bottom:64px;
}
.article-hero{
  padding:14px 0 26px;
  border-bottom:1px solid var(--line);
  margin-bottom:30px;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(123,77,255,.16);
  border:1px solid rgba(176,108,255,.35);
  color:var(--brand-2);
  font-size:12.5px;
  font-weight:600;
  text-decoration:none;
  transition:background .2s ease, color .2s ease;
}
.tag-chip:hover{background:rgba(123,77,255,.3);color:#fff}
.article-title{
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
  margin:16px 0 0;
  word-break:break-word;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:18px;
  font-size:13px;
  color:var(--text-dim);
  letter-spacing:.02em;
}
.meta-row .num{
  font-variant-numeric:tabular-nums;
  color:var(--text-muted);
}
.meta-dot{
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--text-dim);
}

/* ============ 正文排版 ============ */
.article-body{
  font-size:16.5px;
  line-height:1.9;
  color:var(--text);
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em;color:#E9E4FB}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.4;
  margin:2em 0 .8em;
  padding-left:14px;
  color:var(--text);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.3em;
  bottom:.3em;
  width:4px;
  border-radius:999px;
  background:var(--grad);
}
.article-body h3{
  font-size:19px;
  font-weight:700;
  line-height:1.5;
  margin:1.6em 0 .6em;
  color:var(--text);
}
.article-body h4{
  font-size:16.5px;
  font-weight:700;
  margin:1.4em 0 .5em;
}
.article-body ul,
.article-body ol{
  margin:0 0 1.2em;
  padding-left:0;
  list-style:none;
}
.article-body ul li,
.article-body ol li{
  position:relative;
  padding-left:22px;
  margin:.55em 0;
  color:#E9E4FB;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.78em;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand-2);
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item}
.article-body ol li::before{
  content:counter(item);
  position:absolute;
  left:0;
  top:.35em;
  width:18px;
  height:18px;
  border-radius:50%;
  background:rgba(123,77,255,.24);
  color:var(--brand-2);
  font-size:11px;
  font-weight:700;
  line-height:18px;
  text-align:center;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:1.5em 0;
  padding:16px 20px;
  border-left:3px solid var(--brand-2);
  background:rgba(123,77,255,.1);
  border-radius:0 16px 16px 0;
  color:var(--text-muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;
  height:auto;
  border-radius:16px;
  margin:1.5em auto;
}
.article-body a{
  color:var(--accent);
  text-decoration:none;
  border-bottom:1px solid rgba(45,226,198,.35);
  transition:border-color .2s ease;
}
.article-body a:hover{border-bottom-color:var(--accent)}
.article-body strong{color:#fff;font-weight:700}
.article-body hr{
  border:0;
  border-top:1px solid var(--line);
  margin:2em 0;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.4em 0;
  font-size:14.5px;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-body th{background:var(--surface-2);color:var(--text)}

/* ============ 空态 ============ */
.empty-block{
  border:1.5px dashed var(--line);
  border-radius:var(--radius-card);
  min-height:220px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  padding:36px 24px;
  text-align:center;
  color:var(--text-muted);
}
.empty-block p{margin:0;font-size:15px}

/* ============ 侧栏 ============ */
.article-aside{display:grid;gap:20px;align-content:start}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-card);
}
.side-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:700;
  margin:0 0 14px;
  color:var(--text);
}
.side-title::before{
  content:"";
  width:4px;
  height:16px;
  border-radius:999px;
  background:var(--grad);
  flex:0 0 auto;
}
.side-list{list-style:none;margin:0;padding:0}
.side-list li + li{
  margin-top:10px;
  padding-top:10px;
  border-top:1px dashed var(--line);
}
.side-list a{
  display:block;
  font-size:14px;
  line-height:1.6;
  color:var(--text-muted);
  text-decoration:none;
  transition:color .2s ease;
}
.side-list a:hover{color:var(--brand-2)}
.side-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:13.5px;
  font-weight:600;
  color:var(--accent);
  text-decoration:none;
}
.side-more:hover{text-decoration:underline;text-underline-offset:4px}
.side-tip-list{
  margin:0;
  padding:0;
  list-style:none;
  font-size:13.5px;
  color:var(--text-muted);
  line-height:1.85;
}
.side-tip-list li{
  position:relative;
  padding-left:18px;
  margin-bottom:8px;
}
.side-tip-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}

/* ============ 相关推荐 ============ */
.related-section{padding:8px 0 72px}
.section-head{margin-bottom:28px}
.section-title{
  font-size:clamp(22px,2.6vw,32px);
  font-weight:700;
  line-height:1.28;
  margin:0 0 10px;
  color:var(--text);
}
.section-sub{
  margin:0;
  font-size:14.5px;
  color:var(--text-muted);
  line-height:1.8;
}
.related-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
.card-article{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  text-decoration:none;
  color:inherit;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card-article:hover{
  transform:translateY(-4px);
  border-color:rgba(176,108,255,.4);
  box-shadow:var(--shadow-hover);
}
.card-article:active{transform:translateY(-1px) scale(.995)}
.thumb{
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:var(--surface-2);
}
.thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.card-article:hover .thumb img{transform:scale(1.05)}
.card-body{
  padding:18px 20px 20px;
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
}
.card-kicker{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(45,226,198,.12);
  border:1px solid rgba(45,226,198,.3);
  color:var(--accent);
  font-size:11.5px;
  font-weight:600;
  align-self:flex-start;
}
.card-title{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  margin:12px 0 8px;
  color:var(--text);
  transition:color .2s ease;
}
.card-article:hover .card-title{color:var(--brand-2)}
.card-desc{
  font-size:13.5px;
  line-height:1.7;
  color:var(--text-muted);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-dim);
  font-variant-numeric:tabular-nums;
}
.card-meta .arrow{
  color:var(--brand-2);
  font-weight:700;
  transition:transform .2s ease;
}
.card-article:hover .card-meta .arrow{transform:translateX(4px)}

/* ============ CTA 通栏 ============ */
.cta-wrap{padding-bottom:80px}
.cta-band{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:32px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(176,108,255,.3);
  background:
    linear-gradient(120deg, rgba(123,77,255,.24) 0%, rgba(45,226,198,.1) 100%);
  box-shadow:var(--shadow-card);
}
.cta-band h2{
  font-size:clamp(20px,2.4vw,28px);
  font-weight:700;
  line-height:1.3;
  margin:0 0 8px;
  color:var(--text);
}
.cta-band p{
  margin:0;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-muted);
  max-width:560px;
}
.cta-band .btn{flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--line);
  background:rgba(15,10,30,.72);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding:56px 0 32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand-name{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
}
.footer-desc{
  margin:0;
  font-size:13.5px;
  line-height:1.85;
  color:var(--text-muted);
  max-width:360px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  margin:0 0 14px;
  color:var(--text);
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li + li{margin-top:10px}
.footer-col a{
  font-size:13.5px;
  color:var(--text-muted);
  text-decoration:none;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--text)}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:13.5px;
  color:var(--text-muted);
}
.footer-contact h4{margin-bottom:4px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding:18px 0 28px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--text-dim);
  font-variant-numeric:tabular-nums;
}

/* ============ 断点 ============ */
@media (min-width:640px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:768px){
  .mobile-panel{display:none !important}
}
@media (max-width:767px){
  .nav-chips{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{padding:10px 20px;gap:12px}
  .brand-name{font-size:15px}
  .brand-sub{display:none}
  .container{padding-left:20px;padding-right:20px}
  .crumbs{padding:18px 0 4px}
  .article-hero{padding-top:10px}
  .cta-band{padding:24px}
  .cta-band .btn{width:100%}
  .cta-wrap{padding-bottom:56px}
  .related-section{padding-bottom:56px}
}
@media (min-width:1024px){
  .article-layout{
    grid-template-columns:minmax(0,820px) 320px;
    justify-content:center;
    gap:48px;
    align-items:start;
  }
  .article-aside{position:sticky;top:96px}
  .related-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
}
@media (max-width:520px){
  .article-title{font-size:26px;line-height:1.25}
  .article-body{font-size:16px}
  .meta-row{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
    --bg-deep:#0F0A1E;
    --bg-base:#150E2B;
    --surface:#1C1338;
    --surface-2:#241847;
    --line:rgba(150,130,220,.18);
    --brand:#7B4DFF;
    --brand-2:#B06CFF;
    --accent:#2DE2C6;
    --warm:#FF8A4C;
    --text:#F4F1FF;
    --text-muted:#A79FC4;
    --text-dim:#7E76A0;
    --grad:linear-gradient(120deg,#7B4DFF 0%,#B06CFF 45%,#2DE2C6 100%);
    --radius-card:24px;
    --radius-lg:28px;
    --shadow-card:0 8px 24px -12px rgba(10,4,30,.7);
    --shadow-lift:0 18px 40px -18px rgba(90,50,200,.55);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
    background:var(--bg-base);
    color:var(--text);
    line-height:1.75;
    font-size:15px;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background:
      radial-gradient(900px 520px at 10% -10%,rgba(123,77,255,.22),transparent 70%),
      radial-gradient(760px 460px at 90% 2%,rgba(45,226,198,.12),transparent 72%);
  }
  body::after{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    opacity:.055;
    background-image:
      radial-gradient(1.4px 1.4px at 20% 24%,#ffffff 50%,transparent 52%),
      radial-gradient(1.2px 1.2px at 62% 12%,#ffffff 50%,transparent 52%),
      radial-gradient(1.6px 1.6px at 84% 46%,#ffffff 50%,transparent 52%),
      radial-gradient(1.2px 1.2px at 38% 68%,#ffffff 50%,transparent 52%),
      radial-gradient(1.4px 1.4px at 74% 82%,#ffffff 50%,transparent 52%);
    background-size:520px 520px,460px 460px,620px 620px,540px 540px,700px 700px;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
  .num{font-variant-numeric:tabular-nums}

  /* 顶部导航 */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(21,14,43,.82);
    border-bottom:1px solid transparent;
    transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(21,14,43,.92);
    border-bottom-color:var(--line);
    backdrop-filter:blur(8px);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    min-height:76px;
    padding-top:10px;
    padding-bottom:10px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;
    background:var(--grad);
    position:relative;
    box-shadow:0 10px 24px -12px rgba(123,77,255,.95);
    flex:0 0 auto;
  }
  .brand-mark::before,.brand-mark::after{
    content:"";position:absolute;border-radius:50%;background:#fff;
  }
  .brand-mark::before{width:6px;height:6px;top:10px;right:9px;opacity:.95}
  .brand-mark::after{width:3px;height:3px;bottom:11px;left:9px;opacity:.7}
  .brand-text{display:flex;flex-direction:column;line-height:1.25}
  .brand-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
  .brand-sub{font-size:11.5px;color:var(--text-dim);letter-spacing:.04em}
  .nav-chips{
    display:flex;align-items:center;gap:8px;
    flex:1 1 auto;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
    padding:4px 0;
  }
  .nav-chips::-webkit-scrollbar{display:none}
  .chip{
    display:inline-flex;align-items:center;justify-content:center;
    height:38px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);
    background:transparent;
    color:var(--text-muted);
    font-size:14px;font-weight:500;white-space:nowrap;
    transition:all .2s ease;
  }
  .chip:hover{color:var(--text);border-color:rgba(150,130,220,.42);background:rgba(36,24,71,.6)}
  .chip.is-active{
    background:var(--grad);
    color:#fff;
    border-color:transparent;
    box-shadow:0 8px 22px -12px rgba(123,77,255,.95);
  }
  .header-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:999px;
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:all .2s ease;
  }
  .btn-primary{
    background:var(--grad);
    color:#fff;
    box-shadow:0 14px 30px -16px rgba(123,77,255,.95);
  }
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 18px 38px -16px rgba(123,77,255,1);transform:translateY(-1px)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{
    background:transparent;
    border-color:var(--line);
    color:var(--text);
  }
  .btn-ghost:hover{background:var(--surface-2);border-color:rgba(150,130,220,.4)}
  .btn-ghost:active{transform:scale(.98)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .nav-toggle{
    display:none;
    width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);
    background:var(--surface);
    color:var(--text);
    align-items:center;justify-content:center;
    cursor:pointer;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.2s;
  }
  .nav-toggle span::before{top:-6px}
  .nav-toggle span::after{top:6px}
  .mobile-panel{
    display:none;
    border-top:1px solid var(--line);
    background:rgba(21,14,43,.98);
    padding:12px 16px 20px;
  }
  .mobile-panel.is-open{display:block}
  .mobile-panel a.m-chip{
    display:flex;align-items:center;
    height:48px;padding:0 16px;margin-bottom:8px;
    border-radius:12px;border:1px solid var(--line);
    color:var(--text-muted);font-size:15px;
  }
  .mobile-panel a.m-chip.is-active{background:var(--grad);color:#fff;border-color:transparent}
  .mobile-panel .btn{width:100%;margin-top:8px}

  /* Hero */
  .hero{padding:64px 0 72px;position:relative}
  .hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;min-height:520px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:32px;padding:0 14px;border-radius:999px;
    background:rgba(36,24,71,.85);
    border:1px solid var(--line);
    color:var(--accent);
    font-size:12.5px;letter-spacing:.04em;
  }
  .eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;box-shadow:0 0 0 4px rgba(45,226,198,.16)}
  .hero h1{
    margin:20px 0 18px;
    font-size:clamp(30px,4.6vw,54px);
    font-weight:800;
    line-height:1.15;
    letter-spacing:-.02em;
  }
  .hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero-sub{color:var(--text-muted);font-size:16px;line-height:1.8;max-width:520px}
  .hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
  .hero-note{margin-top:20px;font-size:13px;color:var(--text-dim);letter-spacing:.02em}
  .hero-visual{position:relative}
  .hero-figure{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    aspect-ratio:16/10;
    background:var(--surface);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover}
  .hero-figure::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(15,10,30,.05) 0%,rgba(15,10,30,.72) 100%);
  }
  .float-badge{
    position:absolute;
    right:16px;bottom:16px;
    background:rgba(28,19,56,.94);
    border:1px solid var(--line);
    border-radius:16px;
    padding:12px 14px;
    box-shadow:var(--shadow-lift);
    backdrop-filter:blur(6px);
    z-index:2;
    min-width:186px;
  }
  .float-badge .fb-label{font-size:12px;color:var(--text-dim);letter-spacing:.02em}
  .float-badge .fb-value{font-size:19px;font-weight:800;color:var(--accent);line-height:1.3}
  .float-badge .fb-foot{font-size:12px;color:var(--text-muted);margin-top:2px}

  /* 板块通用 */
  .section{padding:96px 0;position:relative}
  .sec-head{max-width:720px;margin-bottom:40px}
  .sec-head h2{
    font-size:clamp(22px,2.6vw,34px);
    font-weight:700;line-height:1.25;
    letter-spacing:-.01em;
  }
  .sec-head p{margin-top:12px;color:var(--text-muted);font-size:15px}
  .sec-tag{
    display:inline-block;margin-bottom:14px;
    font-size:12.5px;letter-spacing:.14em;color:var(--accent);
    text-transform:uppercase;
  }

  /* 数据徽章条 */
  .stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .stat-card{
    background:linear-gradient(180deg,var(--surface) 0%,var(--surface-2) 100%);
    border:1px solid var(--line);
    border-radius:20px;
    padding:20px;
    box-shadow:var(--shadow-card);
    transition:all .2s ease;
  }
  .stat-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.42);box-shadow:var(--shadow-lift)}
  .stat-card .stat-value{font-size:24px;font-weight:800;line-height:1.2;color:var(--accent);font-variant-numeric:tabular-nums}
  .stat-card .stat-value.warm{color:var(--warm)}
  .stat-card .stat-label{margin-top:6px;font-size:12.5px;color:var(--text-muted)}

  /* 进度区块 */
  .progress-card{
    margin-top:40px;
    border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background:
      linear-gradient(120deg,rgba(123,77,255,.16) 0%,rgba(45,226,198,.08) 100%),
      var(--surface);
    padding:32px;
    position:relative;
    overflow:hidden;
    box-shadow:var(--shadow-card);
  }
  .progress-card::before{
    content:"";position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-1.png);
    background-size:cover;background-position:center;
    opacity:.08;pointer-events:none;
  }
  .progress-inner{position:relative;z-index:1}
  .progress-top{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}
  .progress-top h3{font-size:20px;font-weight:600}
  .progress-top .p-note{font-size:13px;color:var(--text-muted);margin-top:6px}
  .count-big{font-size:clamp(26px,3.4vw,38px);font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.01em}
  .count-big span{color:var(--accent)}
  .bar{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden;border:1px solid rgba(150,130,220,.14)}
  .bar > i{display:block;height:100%;border-radius:999px;background:var(--grad);transition:width .6s ease}
  .progress-meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:12.5px;color:var(--text-dim)}
  .progress-actions{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap}

  /* 奖励卡网格 */
  .reward-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .reward-card{
    display:flex;flex-direction:column;
    background:linear-gradient(180deg,var(--surface) 0%,var(--surface-2) 100%);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow-card);
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .reward-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.42);box-shadow:var(--shadow-lift)}
  .reward-media{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);position:relative}
  .reward-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
  .reward-card:hover .reward-media img{transform:scale(1.04)}
  .reward-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
  .reward-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
  .reward-head h3{font-size:18px;font-weight:600;line-height:1.4}
  .badge{
    display:inline-flex;align-items:center;
    height:26px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;white-space:nowrap;
    border:1px solid var(--line);
    background:var(--surface-2);
    color:var(--accent);
  }
  .badge.warm{color:var(--warm);border-color:rgba(255,138,76,.35);background:rgba(255,138,76,.1)}
  .badge.cool{color:var(--brand-2);border-color:rgba(176,108,255,.35);background:rgba(176,108,255,.12)}
  .reward-desc{font-size:14px;color:var(--text-muted);line-height:1.8}
  .reward-foot{
    margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--text-dim);
  }
  .reward-foot a{color:var(--brand-2);font-weight:600;display:inline-flex;align-items:center;gap:6px}
  .reward-foot a:hover{color:var(--accent);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}

  /* 任务清单 */
  .task-list{display:flex;flex-direction:column;gap:16px}
  .task-row{
    display:flex;align-items:center;gap:20px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:20px;
    padding:20px 22px;
    transition:all .2s ease;
  }
  .task-row:hover{border-color:rgba(123,77,255,.4);background:var(--surface-2)}
  .task-node{
    width:34px;height:34px;flex:0 0 auto;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;
    color:var(--text-dim);
    border:1px solid var(--line);
    position:relative;
  }
  .task-node.done{background:var(--grad);color:#fff;border-color:transparent}
  .task-node.doing{border-color:var(--accent);color:var(--accent)}
  .task-node.doing::after{
    content:"";position:absolute;inset:-6px;border-radius:50%;
    border:1px solid rgba(45,226,198,.45);
    animation:pulse 2s ease-out infinite;
  }
  @keyframes pulse{
    0%{transform:scale(.86);opacity:.9}
    70%{transform:scale(1.14);opacity:0}
    100%{opacity:0}
  }
  .task-main{flex:1 1 auto;min-width:0}
  .task-title{font-size:16px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .state{
    display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:999px;
    font-size:11.5px;font-weight:600;
  }
  .state.done{color:#0F0A1E;background:var(--accent)}
  .state.doing{color:var(--accent);background:rgba(45,226,198,.12);border:1px solid rgba(45,226,198,.4)}
  .state.todo{color:var(--text-dim);background:rgba(126,118,160,.12);border:1px solid var(--line)}
  .task-main .bar{margin-top:12px}
  .task-main .task-hint{font-size:12.5px;color:var(--text-dim);margin-top:8px}
  .task-row .btn{flex:0 0 auto}

  /* CTA 带 */
  .cta-band{
    border-radius:var(--radius-lg);
    border:1px solid rgba(123,77,255,.32);
    background:
      linear-gradient(120deg,rgba(123,77,255,.2) 0%,rgba(176,108,255,.12) 50%,rgba(45,226,198,.12) 100%),
      var(--surface);
    padding:40px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    box-shadow:var(--shadow-lift);
  }
  .cta-band h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.3}
  .cta-band p{margin-top:10px;color:var(--text-muted);font-size:14.5px;max-width:560px}

  /* FAQ */
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    margin-bottom:12px;
    position:relative;
    overflow:hidden;
    transition:border-color .2s ease,background .2s ease;
  }
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    padding:18px 56px 18px 20px;
    font-size:16px;font-weight:600;
    position:relative;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";
    position:absolute;right:20px;top:50%;
    transform:translateY(-50%);
    font-size:20px;line-height:1;color:var(--text-muted);
    transition:transform .24s ease,color .24s ease;
  }
  .faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);color:var(--accent)}
  .faq-item[open]{border-color:rgba(123,77,255,.45);background:var(--surface-2)}
  .faq-item[open]::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
    border-radius:3px;background:var(--grad);
  }
  .faq-body{padding:0 24px 20px 20px;color:var(--text-muted);font-size:14.5px;line-height:1.8}

  /* 页脚 */
  .site-footer{border-top:1px solid var(--line);background:rgba(15,10,30,.72);padding:64px 0 28px;position:relative;z-index:1}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .brand-name{font-size:16px;font-weight:800}
  .footer-desc{color:var(--text-muted);font-size:13.5px;line-height:1.85;max-width:320px}
  .footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
  .footer-col ul li{margin-bottom:10px}
  .footer-col ul li a{color:var(--text-muted);font-size:13.5px;transition:color .2s ease}
  .footer-col ul li a:hover{color:var(--text)}
  .footer-contact span{display:block;color:var(--text-muted);font-size:13.5px;margin-bottom:10px}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12px;color:var(--text-dim);
  }

  @media (max-width:1023px){
    .nav-chips{display:none}
    .header-cta .btn{display:none}
    .nav-toggle{display:inline-flex}
    .hero{padding:48px 0 56px}
    .hero-grid{grid-template-columns:1fr;gap:36px;min-height:0}
    .hero-sub{max-width:none}
    .section{padding:72px 0}
    .stat-strip{grid-template-columns:repeat(2,1fr)}
    .reward-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
    .cta-band .btn{width:100%}
  }
  @media (max-width:767px){
    .container{padding:0 18px}
    .header-inner{min-height:68px;gap:14px}
    .brand-name{font-size:15px}
    .brand-sub{display:none}
    .hero h1{font-size:clamp(28px,7.4vw,38px)}
    .hero-actions .btn{width:100%}
    .section{padding:56px 0}
    .sec-head{margin-bottom:28px}
    .stat-strip{display:flex;overflow-x:auto;scrollbar-width:none;padding-bottom:4px}
    .stat-strip::-webkit-scrollbar{display:none}
    .stat-card{min-width:190px;flex:0 0 auto}
    .progress-card{padding:22px}
    .task-row{flex-direction:column;align-items:flex-start;gap:14px}
    .task-row .btn{width:100%}
    .reward-body{padding:20px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;gap:8px}
    .float-badge{right:12px;bottom:12px;min-width:168px;padding:10px 12px}
    .float-badge .fb-value{font-size:17px}
  }
  @media (max-width:400px){
    .brand-mark{width:34px;height:34px}
    .hero-note{font-size:12px}
  }

/* roulang page: category2 */
:root{
  --bg-deep:#0F0A1E;
  --bg-base:#150E2B;
  --surface:#1C1338;
  --surface-2:#241847;
  --line:rgba(150,130,220,.18);
  --brand:#7B4DFF;
  --brand-2:#B06CFF;
  --accent:#2DE2C6;
  --warm:#FF8A4C;
  --text:#F4F1FF;
  --text-muted:#A79FC4;
  --text-dim:#7E76A0;
  --grad:linear-gradient(120deg,#7B4DFF 0%,#B06CFF 45%,#2DE2C6 100%);
  --radius-card:24px;
  --radius-big:28px;
  --shadow-card:0 8px 24px -12px rgba(10,4,30,.7);
  --shadow-lift:0 24px 48px -20px rgba(90,50,200,.6);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-base);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  font-variant-numeric:tabular-nums;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(244,241,255,.06) 1px,transparent 1px);
  background-size:120px 120px;
  opacity:.5;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(21,14,43,.9);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(21,14,43,.96);}
.header-inner{display:flex;align-items:center;gap:24px;min-height:76px;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  position:relative;width:38px;height:38px;border-radius:12px;background:var(--grad);
  box-shadow:0 10px 24px -12px rgba(123,77,255,.95);flex:0 0 auto;
}
.brand-mark::before{content:"";position:absolute;top:50%;left:50%;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;background:#fff;}
.brand-mark::after{content:"";position:absolute;inset:9px;border-radius:50%;border:1.5px solid rgba(255,255,255,.72);}
.brand-name{display:block;font-size:17px;font-weight:800;line-height:1.25;letter-spacing:-.01em;}
.brand-sub{display:block;font-size:12px;color:var(--text-dim);letter-spacing:.04em;line-height:1.4;}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;padding:4px 0;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;color:var(--text-muted);
  font-size:14px;white-space:nowrap;transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.chip:hover{background:var(--surface-2);color:var(--text);border-color:rgba(150,130,220,.36);}
.chip.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 22px -12px rgba(123,77,255,.95);}
.header-cta{flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,filter .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 18px 40px -18px rgba(90,50,200,.55);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 24px 46px -18px rgba(123,77,255,.85);}
.btn-primary:active{transform:scale(.98);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{background:var(--surface-2);border-color:rgba(150,130,220,.42);}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--text);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-panel{display:none;border-top:1px solid var(--line);padding:16px 0 20px;}
.mobile-panel.is-open{display:block;}
.mobile-panel .chip{display:flex;width:100%;height:48px;justify-content:flex-start;padding:0 18px;margin-bottom:8px;}
.mobile-panel .btn{margin-top:6px;}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-muted);
  padding:22px 0 0;white-space:nowrap;overflow:hidden;
}
.crumbs a{transition:color .2s ease;}
.crumbs a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.crumbs .sep{color:var(--text-dim);}
.crumbs .current{color:var(--text);overflow:hidden;text-overflow:ellipsis;}

/* ============ Hero ============ */
.hero{position:relative;padding:28px 0 64px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-280px;left:-12%;width:760px;height:760px;
  background:radial-gradient(circle,rgba(123,77,255,.22),transparent 65%);pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-140px;right:-10%;width:580px;height:580px;
  background:radial-gradient(circle,rgba(45,226,198,.12),transparent 65%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,5.4fr) minmax(0,6.6fr);gap:56px;align-items:center;position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(176,108,255,.4);
  background:rgba(123,77,255,.14);
  color:var(--brand-2);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(45,226,198,.16);}
h1{
  font-size:clamp(30px,4.6vw,54px);
  font-weight:800;line-height:1.15;letter-spacing:-.02em;
  margin:20px 0 16px;
}
.hero-sub{font-size:16px;color:var(--text-muted);max-width:34em;margin:0 0 28px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-note{margin:20px 0 0;font-size:13px;color:var(--text-dim);display:flex;align-items:center;gap:8px;}
.hero-note b{color:var(--accent);font-weight:700;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-card);border:1px solid var(--line);
  box-shadow:0 30px 60px -34px rgba(0,0,0,.95);
}
.hero-badge{
  position:absolute;right:16px;bottom:16px;
  background:rgba(36,24,71,.94);border:1px solid var(--line);
  border-radius:16px;padding:12px 16px;
  box-shadow:0 18px 36px -20px rgba(0,0,0,.9);
}
.hero-badge .num{font-size:22px;font-weight:800;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums;}
.hero-badge .lb{font-size:12px;color:var(--text-muted);letter-spacing:.02em;}

/* ============ 数据条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.stat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  padding:18px 20px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-3px);border-color:rgba(123,77,255,.4);}
.stat-card .v{font-size:26px;font-weight:800;line-height:1.2;color:var(--text);}
.stat-card .v em{font-size:13px;font-style:normal;color:var(--text-muted);font-weight:600;margin-left:4px;}
.stat-card .k{font-size:12px;color:var(--text-muted);letter-spacing:.04em;margin-top:4px;}

/* ============ 板块 ============ */
.section{padding:80px 0;position:relative;}
.section-head{margin-bottom:36px;}
.section-head h2{
  position:relative;padding-left:18px;margin:0 0 12px;
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.28;letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:999px;background:var(--grad);
}
.section-head p{margin:0;font-size:15px;color:var(--text-muted);max-width:64ch;line-height:1.85;}

/* ============ 筛选 ============ */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.filter-chip{
  height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:transparent;color:var(--text-muted);
  font-size:14px;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.filter-chip:hover{background:var(--surface-2);color:var(--text);}
.filter-chip.is-on{background:rgba(123,77,255,.18);border-color:rgba(176,108,255,.55);color:var(--text);box-shadow:inset 0 0 0 1px rgba(176,108,255,.18);}

/* ============ 项目卡片 ============ */
.project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start;}
.project-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.project-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.42);box-shadow:var(--shadow-lift);}
.project-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.project-card.tall img{aspect-ratio:4/3;}
.card-body{padding:20px 22px 22px;}
.card-top{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(45,226,198,.12);color:var(--accent);border:1px solid rgba(45,226,198,.28);
}
.tag-warm{background:rgba(255,138,76,.12);color:var(--warm);border-color:rgba(255,138,76,.3);}
.tag-plain{background:rgba(167,159,196,.1);color:var(--text-muted);border-color:var(--line);}
.card-title{margin:0 0 8px;font-size:18px;font-weight:600;line-height:1.45;}
.card-desc{margin:0;font-size:14px;color:var(--text-muted);line-height:1.8;}
.card-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  display:flex;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--text-dim);letter-spacing:.02em;
}

/* ============ 双列说明 ============ */
.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.text-block h3{margin:0 0 14px;font-size:20px;font-weight:600;line-height:1.4;}
.text-block p{margin:0 0 20px;font-size:15px;color:var(--text-muted);line-height:1.85;}
.point-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--text-muted);line-height:1.8;}
.point-list .dot{
  flex:0 0 auto;width:22px;height:22px;margin-top:4px;border-radius:8px;
  background:rgba(123,77,255,.2);border:1px solid rgba(176,108,255,.4);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--brand-2);
}
.point-list strong{color:var(--text);font-weight:600;}
.pic-block img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-big);border:1px solid var(--line);
  box-shadow:0 28px 56px -32px rgba(0,0,0,.95);
}
.pic-note{margin-top:14px;font-size:13px;color:var(--text-dim);line-height:1.7;}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;
  box-shadow:var(--shadow-card);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.4);box-shadow:var(--shadow-lift);}
.step-node{
  width:36px;height:36px;border-radius:50%;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;
  box-shadow:0 12px 24px -14px rgba(123,77,255,.95);
}
.step h3{margin:0 0 8px;font-size:18px;font-weight:600;}
.step p{margin:0;font-size:14px;color:var(--text-muted);line-height:1.8;}
.step-line{position:absolute;top:44px;right:-24px;width:24px;height:1px;background:var(--line);}
.step:last-child .step-line{display:none;}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:0 20px;transition:background .2s ease,border-color .2s ease;
}
.faq-item[open]{background:var(--surface-2);border-color:rgba(123,77,255,.42);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:var(--brand-2);
  transition:transform .24s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-body{
  font-size:15px;color:var(--text-muted);line-height:1.85;
  padding:0 0 18px;border-left:3px solid transparent;
  transition:border-color .2s ease,padding-left .2s ease;
}
.faq-item[open] .faq-body{border-left-color:var(--brand-2);padding-left:14px;}

/* ============ CTA ============ */
.cta-wrap{padding:24px 0 80px;}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px;border-radius:var(--radius-big);
  background:linear-gradient(120deg,rgba(123,77,255,.22) 0%,rgba(176,108,255,.12) 45%,rgba(45,226,198,.12) 100%);
  border:1px solid rgba(150,130,220,.28);
  box-shadow:0 28px 60px -34px rgba(90,50,200,.8);
}
.cta-band h2{margin:0 0 8px;font-size:clamp(20px,2.2vw,28px);font-weight:700;line-height:1.3;}
.cta-band p{margin:0;font-size:15px;color:var(--text-muted);max-width:46ch;line-height:1.8;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);background:var(--bg-deep);
  padding:64px 0 28px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:9px;}
.footer-brand .brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.footer-desc{margin:0;font-size:14px;color:var(--text-muted);line-height:1.85;max-width:34ch;}
.footer-col h4{margin:0 0 14px;font-size:14px;font-weight:700;color:var(--text);}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-muted);transition:color .2s ease;}
.footer-col a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
.footer-contact span{display:block;font-size:13px;color:var(--text-muted);margin-bottom:8px;line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-dim);letter-spacing:.02em;
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .hero-grid{gap:40px;}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:28px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .hero{padding:20px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-sub{max-width:none;}
  .project-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .two-col{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:1fr;}
  .step-line{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .cta-band .btn{width:100%;}
}
@media (max-width:767px){
  .nav-chips{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .header-inner{min-height:68px;gap:12px;}
  .brand-name{font-size:16px;}
  .brand-sub{font-size:11px;}
  .container{padding:0 18px;}
}
@media (max-width:640px){
  .section{padding:52px 0;}
  .project-grid{grid-template-columns:1fr;}
  .stat-strip{display:flex;overflow-x:auto;gap:12px;padding-bottom:6px;scrollbar-width:none;}
  .stat-strip::-webkit-scrollbar{display:none;}
  .stat-card{min-width:158px;flex:0 0 auto;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px 22px;border-radius:22px;}
  .section-head h2{padding-left:14px;}
  .faq-item{padding:0 16px;}
  .crumbs{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
    --bg-deep:#0F0A1E;
    --bg-base:#150E2B;
    --surface:#1C1338;
    --surface-2:#241847;
    --line:rgba(150,130,220,.18);
    --line-strong:rgba(150,130,220,.38);
    --brand:#7B4DFF;
    --brand-2:#B06CFF;
    --accent:#2DE2C6;
    --warm:#FF8A4C;
    --text:#F4F1FF;
    --text-muted:#A79FC4;
    --text-dim:#7E76A0;
    --grad:linear-gradient(120deg,#7B4DFF 0%,#B06CFF 45%,#2DE2C6 100%);
    --r-card:24px;
    --r-lg:28px;
    --r-sm:12px;
    --shadow-card:0 8px 24px -12px rgba(10,4,30,.7);
    --shadow-hover:0 18px 40px -18px rgba(90,50,200,.55);
    --t:200ms ease;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:96px;}
  img{max-width:100%;display:block;}
  a{color:inherit;}
  button{font-family:inherit;}

  .page-body{
    margin:0;
    position:relative;
    overflow-x:hidden;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background-color:var(--bg-deep);
    background-image:
      radial-gradient(circle at 16% -6%,rgba(123,77,255,.22),transparent 46%),
      radial-gradient(circle at 84% 3%,rgba(45,226,198,.12),transparent 42%),
      radial-gradient(circle at 50% 34%,rgba(176,108,255,.07),transparent 62%);
    background-repeat:no-repeat;
    background-size:100% 880px,100% 720px,100% 100%;
    -webkit-font-smoothing:antialiased;
  }
  .page-body::before{
    content:"";
    position:absolute;
    inset:0 0 auto 0;
    height:760px;
    pointer-events:none;
    opacity:.06;
    background-image:radial-gradient(circle,#ffffff 1px,transparent 1px);
    background-size:54px 54px;
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent);
    mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent);
    z-index:0;
  }

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(21,14,43,.92);
    -webkit-backdrop-filter:blur(8px);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex;align-items:center;gap:24px;height:76px;}
  .brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto;}
  .brand-mark{
    position:relative;
    width:38px;height:38px;
    border-radius:12px;
    background:var(--grad);
    box-shadow:0 8px 20px -10px rgba(123,77,255,.9);
    flex:0 0 auto;
  }
  .brand-mark::after{
    content:"";
    position:absolute;inset:10px;
    border-radius:50%;
    border:1.5px solid rgba(255,255,255,.78);
    border-top-color:transparent;
    transform:rotate(-30deg);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.22;}
  .brand-name{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--text);}
  .brand-sub{font-size:11px;color:var(--text-dim);letter-spacing:.08em;}
  .nav-chips{
    display:flex;align-items:center;justify-content:center;gap:8px;
    flex:1 1 auto;min-width:0;
    overflow-x:auto;
    scrollbar-width:none;
    padding:4px 0;
  }
  .nav-chips::-webkit-scrollbar{display:none;}
  .chip{
    display:inline-flex;align-items:center;
    height:38px;padding:0 16px;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--text-muted);
    font-size:14px;font-weight:500;
    text-decoration:none;white-space:nowrap;
    transition:color var(--t),background var(--t),border-color var(--t),box-shadow var(--t);
  }
  .chip:hover{color:var(--text);border-color:var(--line-strong);background:var(--surface-2);}
  .chip.is-active{
    background:var(--grad);
    color:#fff;
    border-color:transparent;
    box-shadow:0 0 0 1px rgba(176,108,255,.35),0 8px 20px -12px rgba(123,77,255,.9);
  }
  .header-cta{flex:0 0 auto;height:40px;padding:0 20px;font-size:14px;}
  .nav-toggle{
    display:none;
    flex-direction:column;align-items:center;justify-content:center;gap:5px;
    width:44px;height:44px;
    border-radius:12px;
    border:1px solid var(--line);
    background:var(--surface);
    cursor:pointer;
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform var(--t),opacity var(--t);}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .mobile-panel{display:none;border-top:1px solid var(--line);padding:16px 0 22px;}
  .mobile-panel.is-open{display:block;}
  .mobile-nav{display:flex;flex-direction:column;gap:8px;}
  .mobile-link{
    display:flex;align-items:center;
    height:48px;padding:0 16px;
    border-radius:12px;
    border:1px solid var(--line);
    color:var(--text-muted);
    text-decoration:none;
    font-size:15px;
    transition:background var(--t),color var(--t),border-color var(--t);
  }
  .mobile-link:hover{background:var(--surface-2);color:var(--text);}
  .mobile-link.is-active{background:var(--grad);color:#fff;border-color:transparent;}
  .mobile-cta{width:100%;margin-top:14px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 26px;
    border-radius:999px;
    border:1px solid transparent;
    font-size:15px;font-weight:600;
    text-decoration:none;cursor:pointer;
    transition:transform var(--t),box-shadow var(--t),background var(--t),filter var(--t),border-color var(--t),color var(--t);
  }
  .btn-primary{
    background-image:var(--grad);
    background-size:170% 170%;
    background-position:0% 50%;
    color:#fff;
    box-shadow:0 12px 28px -14px rgba(123,77,255,.95);
  }
  .btn-primary:hover{
    background-position:100% 50%;
    filter:brightness(1.08);
    transform:translateY(-1px);
    box-shadow:0 16px 34px -14px rgba(123,77,255,1);
  }
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
  .btn-ghost:hover{background:var(--surface-2);border-color:var(--line-strong);transform:translateY(-1px);}
  .btn-ghost:active{transform:scale(.98);}
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
  }

  /* ---------- 面包屑 ---------- */
  .crumb{
    display:flex;align-items:center;gap:8px;
    padding:24px 0 0;
    font-size:13px;
    color:var(--text-muted);
    white-space:nowrap;
    overflow:hidden;
  }
  .crumb a{color:var(--text-muted);text-decoration:none;transition:color var(--t);}
  .crumb a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
  .crumb .sep{color:var(--text-dim);}
  .crumb .current{color:var(--text);overflow:hidden;text-overflow:ellipsis;}

  /* ---------- Hero ---------- */
  .page-hero{padding:36px 0 64px;}
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:30px;padding:0 14px;
    border-radius:999px;
    border:1px solid rgba(45,226,198,.32);
    background:rgba(45,226,198,.08);
    color:var(--accent);
    font-size:12px;letter-spacing:.06em;
    margin-bottom:20px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(45,226,198,.16);}
  h1.hero-title{
    margin:0 0 18px;
    font-size:clamp(30px,4.6vw,50px);
    font-weight:800;
    line-height:1.15;
    letter-spacing:-.02em;
  }
  .hero-title em{
    font-style:normal;
    background:var(--grad);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-lead{
    margin:0 0 28px;
    font-size:16px;
    line-height:1.85;
    color:var(--text-muted);
    max-width:34em;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .hero-meta{
    margin:22px 0 0;
    font-size:13px;
    color:var(--text-dim);
    letter-spacing:.02em;
    font-variant-numeric:tabular-nums;
  }
  .hero-visual{position:relative;margin:0;}
  .hero-visual img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    border-radius:var(--r-card);
    border:1px solid var(--line);
    box-shadow:var(--shadow-hover);
  }
  .hero-badge{
    position:absolute;
    right:16px;bottom:-18px;
    display:flex;align-items:center;gap:12px;
    padding:12px 18px;
    border-radius:16px;
    background:var(--surface-2);
    border:1px solid var(--line-strong);
    box-shadow:var(--shadow-card);
  }
  .hero-badge strong{
    font-size:24px;font-weight:800;line-height:1;
    color:var(--accent);
    font-variant-numeric:tabular-nums;
  }
  .hero-badge span{font-size:12px;line-height:1.4;color:var(--text-muted);}

  /* ---------- 通用区块 ---------- */
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .section-sub{margin:10px 0 0;font-size:14.5px;color:var(--text-muted);max-width:64ch;line-height:1.8;}
  .h2-bar{
    position:relative;
    margin:0;
    padding-left:18px;
    font-size:clamp(22px,2.6vw,32px);
    font-weight:700;
    line-height:1.25;
    letter-spacing:-.01em;
  }
  .h2-bar::before{
    content:"";
    position:absolute;left:0;top:5px;bottom:5px;
    width:4px;border-radius:4px;
    background:var(--grad);
  }

  /* ---------- 锚点索引 ---------- */
  .anchor-bar{
    display:flex;flex-wrap:wrap;gap:10px;
    padding:22px;
    border-radius:var(--r-card);
    background:var(--surface);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    margin-bottom:44px;
  }
  .anchor-link{
    display:inline-flex;align-items:center;gap:8px;
    height:40px;padding:0 18px;
    border-radius:999px;
    background:var(--surface-2);
    border:1px solid var(--line);
    color:var(--text-muted);
    font-size:14px;text-decoration:none;
    transition:color var(--t),border-color var(--t),transform var(--t),background var(--t);
  }
  .anchor-link:hover{color:var(--text);border-color:rgba(123,77,255,.45);transform:translateY(-2px);}
  .anchor-link i{
    font-style:normal;
    font-size:12px;
    font-variant-numeric:tabular-nums;
    color:var(--accent);
  }

  /* ---------- FAQ ---------- */
  .faq-group{margin-bottom:48px;}
  .faq-group:last-child{margin-bottom:0;}
  .group-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px;}
  .group-head h2{margin:0;font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.3;}
  .group-count{
    display:inline-flex;align-items:center;
    height:26px;padding:0 12px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--surface-2);
    color:var(--text-dim);
    font-size:12px;
    font-variant-numeric:tabular-nums;
  }
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    overflow:hidden;
    transition:border-color var(--t),box-shadow var(--t),background var(--t);
  }
  .faq-item:hover{border-color:var(--line-strong);}
  .faq-item.is-open{border-color:rgba(123,77,255,.42);box-shadow:var(--shadow-card);background:var(--surface);}
  .faq-item::before{
    content:"";
    position:absolute;left:0;top:14px;bottom:14px;
    width:3px;border-radius:3px;
    background:var(--grad);
    opacity:0;
    transition:opacity 240ms ease;
  }
  .faq-item.is-open::before{opacity:1;}
  .faq-h{margin:0;font-weight:600;}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    width:100%;
    padding:18px 20px;
    background:transparent;border:0;
    color:var(--text);
    font-size:16px;font-weight:600;
    line-height:1.55;
    text-align:left;
    cursor:pointer;
  }
  .faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;color:var(--brand-2);}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px;}
  .faq-icon::before{left:0;top:8px;width:18px;height:2px;}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:transform 240ms ease;}
  .faq-item.is-open .faq-icon::after{transform:rotate(90deg) scaleY(0);}
  .faq-a{overflow:hidden;max-height:0;transition:max-height 300ms cubic-bezier(.2,.7,.3,1);}
  .faq-a-inner{padding:0 20px 20px;font-size:14.5px;line-height:1.85;color:var(--text-muted);}
  .faq-a-inner p{margin:0;}
  .faq-a-inner p + p{margin-top:10px;}

  /* ---------- 准备清单 ---------- */
  .prep-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .prep-card{
    position:relative;
    padding:26px 24px;
    border-radius:var(--r-card);
    background:var(--surface);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  }
  .prep-card:hover{transform:translateY(-4px);border-color:rgba(123,77,255,.4);box-shadow:var(--shadow-hover);}
  .prep-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;
    border-radius:12px;
    background:var(--surface-2);
    border:1px solid var(--line-strong);
    color:var(--accent);
    font-size:13px;font-weight:800;
    font-variant-numeric:tabular-nums;
    margin-bottom:16px;
  }
  .prep-card h3{margin:0 0 8px;font-size:17px;font-weight:600;line-height:1.45;}
  .prep-card p{margin:0;font-size:14px;line-height:1.8;color:var(--text-muted);}

  /* ---------- 联系表单 ---------- */
  .contact-card{
    padding:40px;
    border-radius:var(--r-lg);
    background:var(--surface);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
  }
  .contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
  .contact-aside h2{margin:0 0 14px;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;}
  .contact-aside p{margin:0 0 20px;font-size:14.5px;line-height:1.85;color:var(--text-muted);}
  .contact-facts{display:flex;flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;}
  .contact-facts li{
    display:flex;align-items:flex-start;gap:10px;
    font-size:14px;color:var(--text-muted);line-height:1.7;
  }
  .contact-facts li::before{
    content:"";
    flex:0 0 6px;width:6px;height:6px;margin-top:9px;
    border-radius:50%;
    background:var(--accent);
  }
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
  .field{display:flex;flex-direction:column;gap:8px;}
  .field.full{grid-column:1 / -1;}
  .label{font-size:12px;letter-spacing:.04em;color:var(--text-muted);}
  .input,.textarea,.select{
    width:100%;
    min-height:46px;
    padding:11px 14px;
    border-radius:var(--r-sm);
    border:1px solid var(--line);
    background:var(--bg-base);
    color:var(--text);
    font-family:inherit;
    font-size:14.5px;
    line-height:1.6;
    transition:border-color var(--t),box-shadow var(--t),background var(--t);
    -webkit-appearance:none;
    appearance:none;
  }
  .textarea{min-height:132px;resize:vertical;}
  .input::placeholder,.textarea::placeholder{color:var(--text-dim);}
  .input:focus,.textarea:focus,.select:focus{
    outline:none;
    border-color:var(--accent);
    box-shadow:0 0 0 3px rgba(45,226,198,.14);
    background:var(--surface-2);
  }
  .select{background-image:linear-gradient(45deg,transparent 50%,var(--text-muted) 50%),linear-gradient(135deg,var(--text-muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px;}
  .form-foot{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px;}
  .form-note{font-size:13px;color:var(--text-dim);margin:0;line-height:1.7;}
  .form-note.is-ok{color:var(--accent);}

  /* ---------- CTA 通栏 ---------- */
  .cta-band{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    padding:44px;
    border-radius:var(--r-lg);
    border:1px solid var(--line);
    background-image:linear-gradient(120deg,rgba(123,77,255,.20) 0%,rgba(176,108,255,.14) 45%,rgba(45,226,198,.12) 100%);
    overflow:hidden;
  }
  .cta-band::after{
    content:"";
    position:absolute;right:-60px;top:-80px;
    width:260px;height:260px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(123,77,255,.35),transparent 68%);
    pointer-events:none;
  }
  .cta-band h2{margin:0 0 10px;font-size:clamp(20px,2.3vw,28px);font-weight:700;line-height:1.3;}
  .cta-band p{margin:0;font-size:14.5px;line-height:1.8;color:var(--text-muted);max-width:52ch;}
  .cta-band .btn{position:relative;z-index:1;flex:0 0 auto;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:96px;
    padding:64px 0 28px;
    border-top:1px solid var(--line);
    background:rgba(15,10,30,.62);
    position:relative;
    z-index:1;
  }
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-mark{width:30px;height:30px;border-radius:9px;}
  .footer-brand .brand-name{font-size:16px;font-weight:800;color:var(--text);}
  .footer-desc{margin:0;font-size:13.5px;line-height:1.85;color:var(--text-muted);max-width:36ch;}
  .footer-col h4{margin:0 0 16px;font-size:14px;font-weight:700;color:var(--text);}
  .footer-col ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px;}
  .footer-col a{font-size:14px;color:var(--text-muted);text-decoration:none;transition:color var(--t);}
  .footer-col a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;}
  .footer-contact span{display:block;font-size:13.5px;line-height:1.75;color:var(--text-muted);margin-bottom:8px;}
  .footer-bottom{
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    margin-top:48px;padding-top:20px;
    border-top:1px solid var(--line);
    font-size:12px;color:var(--text-dim);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .hero-grid{gap:36px;}
    .contact-grid{grid-template-columns:1fr;gap:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .section{padding:48px 0;}
  }
  @media (max-width:900px){
    .hero-grid{grid-template-columns:1fr;}
    .hero-visual{order:2;}
    .prep-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:768px){
    .nav-inner{height:64px;gap:12px;}
    .nav-chips{display:none;}
    .header-cta{display:none;}
    .nav-toggle{display:inline-flex;margin-left:auto;}
    .brand-name{font-size:15px;}
    .brand-sub{font-size:10px;}
    .page-hero{padding:24px 0 52px;}
    .hero-actions .btn{flex:1 1 100%;}
    .contact-card{padding:26px 20px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:30px 24px;gap:22px;}
    .cta-band .btn{width:100%;}
    .site-footer{margin-top:64px;padding:48px 0 24px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;gap:8px;}
    .prep-grid{grid-template-columns:1fr;}
    .form-grid{grid-template-columns:1fr;}
  }
  @media (max-width:520px){
    .container{padding:0 16px;}
    .anchor-bar{padding:16px;}
    .anchor-link{height:38px;font-size:13px;padding:0 14px;}
    .hero-badge{right:8px;bottom:-14px;padding:10px 13px;}
    .hero-badge strong{font-size:20px;}
    .faq-q{padding:16px;font-size:15px;}
    .faq-a-inner{padding:0 16px 18px;font-size:14px;}
    .section{padding:40px 0;}
  }