/* roulang page: index */
:root{
  --brand-a:#00D1A0;
  --brand-b:#5B3DF5;
  --accent:#FFD24A;
  --ink:#14121F;
  --ink-2:#241C4A;
  --text:#3D3D4E;
  --muted:#74748A;
  --line:#E7E7F0;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --info:#2E90FA;
  --grad:linear-gradient(120deg,#00D1A0 0%,#5B3DF5 100%);
  --grad-dark:linear-gradient(135deg,#14121F 0%,#241C4A 100%);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 2px 4px rgba(20,18,31,.04),0 12px 32px rgba(20,18,31,.06);
  --sh-2:0 8px 20px rgba(91,61,245,.14),0 24px 48px rgba(20,18,31,.10);
  --sh-3:0 16px 40px rgba(20,18,31,.18);
  --pad-x:24px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;font-weight:800;}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--pad-x);}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-b);
  background:rgba(91,61,245,.08);
  border:1px solid rgba(91,61,245,.18);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.section-head .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--grad);}
.section-head h2{font-size:28px;line-height:1.35;}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8;max-width:640px;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 32px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(91,61,245,.22);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,209,160,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1.5px solid var(--line);color:var(--text);background:transparent;}
.btn-ghost:hover{border-color:var(--brand-a);color:var(--brand-b);background:rgba(0,209,160,.06);}
.btn-ghost-dark{border:1.5px solid rgba(255,255,255,.3);color:#fff;background:transparent;}
.btn-ghost-dark:hover{border-color:var(--brand-a);color:var(--brand-a);background:rgba(0,209,160,.1);}
.btn-accent{background:var(--accent);color:var(--ink);font-weight:700;}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,210,74,.3);}
.btn:focus-visible{outline:2px solid rgba(0,209,160,.4);outline-offset:3px;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-sm{padding:10px 22px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-b);}
.link-arrow i{transition:transform .22s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:16px;
  background:rgba(91,61,245,.08);
  border:1px solid rgba(91,61,245,.18);
  font-size:12px;color:var(--text);
}
.badge b{font-size:20px;color:var(--brand-b);font-variant-numeric:tabular-nums;font-weight:800;}
.badge-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.20);color:rgba(255,255,255,.72);}
.badge-dark b{color:var(--accent);}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(0,209,160,.10);color:#0a8f6d;border:1px solid rgba(0,209,160,.22);
}
.pill-purple{background:rgba(91,61,245,.09);color:var(--brand-b);border-color:rgba(91,61,245,.2);}
.pill-line{background:#fff;color:var(--muted);border-color:var(--line);}
.pill-line:hover{border-color:var(--brand-a);color:var(--brand-b);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(20,18,31,.05);}
.nav{display:flex;align-items:center;height:72px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink);letter-spacing:.2px;}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:800;
  box-shadow:0 6px 16px rgba(91,61,245,.28);
}
.logo-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:34px;margin-left:24px;flex:1;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:1px;background:var(--brand-a);
  transform:translateX(-50%);transition:width .25s ease;
}
.nav-links a:hover{color:var(--brand-b);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--brand-b);font-weight:600;background:rgba(0,209,160,.10);border-radius:999px;padding:6px 14px;}
.nav-links a.active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:16px;}
.icon-btn{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:var(--text);border:1px solid var(--line);transition:all .2s ease;background:#fff;
}
.icon-btn:hover{color:var(--brand-b);border-color:var(--brand-a);background:rgba(0,209,160,.06);}
.icon-btn:focus-visible{outline:2px solid rgba(0,209,160,.4);outline-offset:2px;}
.burger{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;align-items:center;border-radius:12px;border:1px solid var(--line);background:#fff;}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .25s ease,opacity .2s ease;}
.burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.burger.open span:nth-child(2){opacity:0;}
.burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

.drawer-mask{position:fixed;inset:0;background:rgba(20,18,31,.5);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:86vw;background:#fff;
  border-radius:24px 0 0 24px;z-index:80;transform:translateX(100%);
  transition:transform .28s ease;display:flex;flex-direction:column;padding:24px 20px 28px;
  box-shadow:-16px 0 40px rgba(20,18,31,.16);
}
.drawer.show{transform:translateX(0);}
.drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer nav a{
  height:56px;display:flex;align-items:center;font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer nav a.active{color:var(--brand-b);}
.drawer .drawer-cta{margin-top:auto;}
.drawer .drawer-cta .btn{width:100%;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-dark);
  color:#fff;padding:80px 0 92px;min-height:600px;display:flex;align-items:center;
}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;}
.hero::before{width:460px;height:460px;background:rgba(0,209,160,.18);top:-140px;left:-120px;}
.hero::after{width:520px;height:520px;background:rgba(91,61,245,.18);bottom:-220px;right:-120px;}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%;}
.hero h1{font-size:40px;line-height:1.28;font-weight:800;color:#fff;letter-spacing:.3px;}
.hero .hero-sub{margin-top:22px;font-size:18px;line-height:1.75;color:rgba(255,255,255,.82);max-width:520px;}
.hero .hero-note{margin-top:14px;font-size:14px;color:rgba(255,255,255,.6);}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px;}
.hero-strip{
  position:relative;z-index:2;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:28px;font-size:14px;color:rgba(255,255,255,.62);
}
.hero-strip a{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.78);}
.hero-strip a:hover{color:var(--brand-a);}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);}
.hero-visual img{width:100%;height:380px;object-fit:cover;}
.hero-visual .veil{
  position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(0,209,160,.42),rgba(91,61,245,.55));
  mix-blend-mode:multiply;
}
.hero-visual .panel{
  position:absolute;left:20px;top:20px;
  background:rgba(20,18,31,.55);border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(8px);border-radius:var(--r-md);padding:14px 18px;
}
.hero-visual .panel .k{font-size:12px;color:rgba(255,255,255,.72);}
.hero-visual .panel .v{font-size:22px;color:#fff;font-variant-numeric:tabular-nums;font-weight:800;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;margin-top:18px;}

/* ============ 权益对比 ============ */
.compare-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse;font-size:15px;}
.compare-table th,.compare-table td{padding:18px 20px;text-align:left;border-bottom:1px solid var(--line);}
.compare-table thead th{background:#FBFBFE;font-size:13px;font-weight:600;color:var(--muted);}
.compare-table tbody tr:hover{background:rgba(0,209,160,.06);}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table td.name{color:var(--text);font-weight:500;}
.col-head{display:flex;flex-direction:column;gap:8px;}
.lvl-tag{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:#fff;background:var(--grad);width:fit-content;
}
.lvl-tag.g2{background:linear-gradient(120deg,#5B3DF5,#00D1A0);}
.lvl-tag.g3{background:linear-gradient(120deg,#241C4A,#5B3DF5);}
.lvl-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;}
.compare-table .yes{color:var(--brand-a);font-weight:700;font-size:17px;}
.compare-table .no{color:#C9C9D6;font-weight:700;font-size:17px;}
.recommend{background:rgba(0,209,160,.05);}
thead .recommend{background:rgba(0,209,160,.10);}
.recommend-badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:var(--ink);
  font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;width:fit-content;
}
.compare-mobile{display:none;}

/* ============ 等级亮点 ============ */
.stair-grid{display:grid;grid-template-columns:6fr 6fr;gap:32px;align-items:start;}
.stair-list{display:flex;flex-direction:column;gap:18px;}
.stair-card{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 26px 26px 30px;box-shadow:var(--sh-1);
  transition:transform .25s ease,box-shadow .25s ease;
  overflow:hidden;
}
.stair-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad);
  transition:width .25s ease;
}
.stair-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.stair-card:hover::before{width:7px;}
.stair-card .row{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
.stair-card h3{font-size:20px;font-weight:600;}
.stair-card .desc{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.8;}
.stair-card .num-badge{
  flex:none;display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-width:62px;padding:8px 12px;border-radius:14px;
  background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.18);
  transition:transform .25s ease;
}
.stair-card:hover .num-badge{transform:scale(1.05);}
.stair-card .num-badge b{font-size:24px;color:var(--brand-b);font-variant-numeric:tabular-nums;font-weight:800;line-height:1.2;}
.stair-card .num-badge span{font-size:12px;color:var(--muted);}
.stair-card.w-1{margin-right:0;}
.stair-card.w-2{margin-right:16px;}
.stair-card.w-3{margin-right:32px;}
.stair-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.stair-visual img{width:100%;height:100%;min-height:420px;object-fit:cover;}
.stair-visual .veil{position:absolute;inset:0;background:linear-gradient(160deg,rgba(20,18,31,.72),rgba(36,28,74,.35));}
.stair-visual .float-badge{
  position:absolute;right:22px;bottom:22px;background:rgba(255,255,255,.94);
  border-radius:var(--r-md);padding:14px 18px;box-shadow:var(--sh-3);
}
.stair-visual .float-badge b{display:block;font-size:26px;color:var(--brand-b);font-variant-numeric:tabular-nums;font-weight:800;line-height:1.1;}
.stair-visual .float-badge span{font-size:12px;color:var(--muted);}
.stair-visual .caption{
  position:absolute;left:26px;bottom:26px;color:#fff;max-width:70%;
}
.stair-visual .caption h3{color:#fff;font-size:20px;}
.stair-visual .caption p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.72);}

/* ============ 专属内容预览 ============ */
.preview-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;}
.pv-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease;
}
.pv-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.pv-cover{position:relative;overflow:hidden;}
.pv-cover img{width:100%;height:180px;object-fit:cover;transition:transform .35s ease;}
.pv-card.big .pv-cover img{height:250px;}
.pv-card:hover .pv-cover img{transform:scale(1.04);}
.pv-cover .tag{position:absolute;left:14px;top:14px;}
.pv-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.pv-body h3{font-size:18px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pv-card.big .pv-body h3{font-size:21px;}
.pv-body p{color:var(--muted);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pv-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);}

/* ============ 最新信息 ============ */
.news-layout{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start;}
.news-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);overflow:hidden;}
.news-item{
  display:grid;grid-template-columns:190px 1fr;gap:22px;
  padding:24px 26px;border-bottom:1px solid var(--line);transition:background-color .22s ease;
}
.news-item:last-child{border-bottom:none;}
.news-item:hover{background:rgba(0,209,160,.04);}
.news-thumb{
  position:relative;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10;background:var(--grad);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-item:hover .news-thumb img{transform:scale(1.03);}
.news-thumb .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.92);font-size:13px;font-weight:600;letter-spacing:.1em;
}
.news-main h3{font-size:18px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-main h3 a:hover{color:var(--brand-b);}
.news-main .excerpt{margin-top:10px;color:var(--muted);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:14px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--muted);}
.news-meta .divider{width:1px;height:12px;background:var(--line);}
.news-foot{padding:22px;display:flex;justify-content:center;border-top:1px solid var(--line);}
.empty-state{padding:56px 26px;text-align:center;color:var(--muted);}
.empty-state i{font-size:30px;color:#C9C9D6;}
.empty-state p{margin-top:14px;font-size:16px;}
.empty-state span{display:block;margin-top:8px;font-size:14px;color:var(--muted);}

.news-aside{display:flex;flex-direction:column;gap:22px;}
.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);}
.aside-card h3{font-size:16px;font-weight:600;margin-bottom:16px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.aside-lvl{display:flex;flex-direction:column;gap:12px;}
.aside-lvl .row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:14px;background:#FAFAFE;border:1px solid var(--line);font-size:14px;
}
.aside-lvl .row b{font-variant-numeric:tabular-nums;color:var(--brand-b);font-size:18px;}
.aside-cta{
  border-radius:var(--r-lg);padding:26px;color:#fff;background:var(--grad-dark);position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
}
.aside-cta::after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(0,209,160,.2);filter:blur(70px);bottom:-110px;right:-80px;}
.aside-cta h3{color:#fff;font-size:18px;position:relative;z-index:1;}
.aside-cta p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);position:relative;z-index:1;}
.aside-cta .btn{margin-top:18px;width:100%;position:relative;z-index:1;}

/* ============ 使用路径 / 数据 ============ */
.path-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.path-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;
  box-shadow:var(--sh-1);transition:transform .25s ease,box-shadow .25s ease;
}
.path-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.path-card .idx{
  font-size:13px;font-weight:800;color:var(--brand-b);letter-spacing:.12em;
  font-variant-numeric:tabular-nums;
}
.path-card h3{margin-top:14px;font-size:17px;font-weight:600;}
.path-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;}
.stats-band{
  margin-top:40px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px;box-shadow:var(--sh-1);display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.stat-item{display:flex;flex-direction:column;gap:8px;padding-right:20px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:none;padding-right:0;}
.stat-item b{font-size:30px;color:var(--ink);font-variant-numeric:tabular-nums;font-weight:800;line-height:1.1;}
.stat-item span{font-size:14px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;
  transition:border-color .25s ease,background-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border:1.5px solid var(--brand-a);background:linear-gradient(180deg,rgba(0,209,160,.05),rgba(255,255,255,1));box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;flex:none;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-a);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item .answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text);}

/* ============ CTA 带 ============ */
.cta-band{
  border-radius:var(--r-xl);background:var(--grad-dark);color:#fff;padding:48px;
  position:relative;overflow:hidden;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
}
.cta-band::before,.cta-band::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;}
.cta-band::before{width:380px;height:380px;background:rgba(0,209,160,.2);top:-160px;left:-100px;}
.cta-band::after{width:420px;height:420px;background:rgba(91,61,245,.22);bottom:-200px;right:-120px;}
.cta-band .cta-copy{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.74);font-size:15px;line-height:1.8;max-width:520px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.cta-points span{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.86);
}
.cta-band .cta-action{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:16px;}
.cta-band .cta-action .btn{width:100%;justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{background:#0F0D18;color:rgba(255,255,255,.66);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .logo{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;max-width:320px;color:rgba(255,255,255,.6);}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--brand-a);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:14px;
  background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .2s ease;z-index:50;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-inner{gap:36px;}
  .preview-grid{grid-template-columns:1.5fr 1fr;}
  .preview-grid .pv-card:nth-child(3){grid-column:span 2;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .nav-links{display:none;}
  .burger{display:flex;}
  .hero{padding:64px 0 72px;min-height:auto;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual img{height:300px;}
  .hero-badges{justify-content:flex-start;}
  .stair-grid{grid-template-columns:1fr;}
  .stair-card.w-2,.stair-card.w-3{margin-right:0;}
  .stair-visual img{min-height:320px;}
  .news-layout{grid-template-columns:1fr;}
  .path-grid{grid-template-columns:repeat(2,1fr);}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:none;}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--pad-x:16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:22px;}
  .hero h1{font-size:28px;line-height:1.38;}
  .hero .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 100%;}
  .hero-strip{gap:16px;font-size:13px;}
  .compare-wrap{display:none;}
  .compare-mobile{display:grid;gap:16px;}
  .compare-mobile .lvl-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);
  }
  .compare-mobile .lvl-card.recommend{border:1.5px solid var(--brand-a);}
  .compare-mobile .lvl-card ul{margin-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:10px;}
  .compare-mobile .lvl-card li{font-size:14px;display:flex;align-items:flex-start;gap:8px;color:var(--text);}
  .compare-mobile .lvl-card li i{color:var(--brand-a);margin-top:4px;font-size:12px;}
  .preview-grid{grid-template-columns:1fr;}
  .preview-grid .pv-card:nth-child(3){grid-column:span 1;}
  .pv-cover img,.pv-card.big .pv-cover img{height:190px;}
  .news-item{grid-template-columns:1fr;gap:16px;}
  .news-thumb{aspect-ratio:16/9;}
  .path-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;gap:20px;}
  .stat-item{border-right:none;border-bottom:1px solid var(--line);padding:0 0 16px;}
  .stat-item:last-child{border-bottom:none;padding-bottom:0;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:16px;padding:18px 20px;}
  .faq-item .answer{padding:0 20px 20px;}
  .logo-text{font-size:16px;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .hero h1{font-size:24px;}
  .hero{padding:48px 0 56px;}
  .hero-visual img{height:220px;}
  .hero-visual .panel{padding:10px 14px;}
  .hero-visual .panel .v{font-size:18px;}
  .badge b{font-size:18px;}
  .btn{padding:13px 24px;font-size:14px;}
  .section-head h2{font-size:20px;}
  .compare-mobile .lvl-card ul{grid-template-columns:1fr;}
  .cta-band{padding:26px;}
  .stair-card{padding:22px 20px 22px 24px;}
  .news-item{padding:20px 18px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#00D1A0;
  --c-secondary:#5B3DF5;
  --c-accent:#FFD24A;
  --c-ink:#14121F;
  --c-ink-2:#241C4A;
  --c-text:#3D3D4E;
  --c-muted:#74748A;
  --c-line:#E7E7F0;
  --c-bg:#F6F7FB;
  --c-card:#FFFFFF;
  --grad:linear-gradient(120deg,#00D1A0 0%,#5B3DF5 100%);
  --grad-dark:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  --r-lg:32px;
  --r-md:24px;
  --r-sm:16px;
  --shadow-1:0 2px 4px rgba(20,18,31,.04),0 12px 32px rgba(20,18,31,.06);
  --shadow-2:0 8px 20px rgba(91,61,245,.14),0 24px 48px rgba(20,18,31,.10);
  --font:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-weight:800}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;border-radius:999px;padding:14px 32px;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,filter .22s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(0,209,160,.22)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 28px rgba(0,209,160,.30)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;border:1.5px solid var(--c-line);color:var(--c-text)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(0,209,160,.06);transform:translateY(-2px)}
.btn-ghost-dark{background:transparent;border:1.5px solid rgba(255,255,255,.30);color:#fff}
.btn-ghost-dark:hover{border-color:var(--c-primary);color:var(--c-primary);background:rgba(0,209,160,.10);transform:translateY(-2px)}
.btn-accent{background:var(--c-accent);color:var(--c-ink)}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,210,74,.30)}
.btn-sm{padding:10px 22px;font-size:14px}
.btn:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:3px}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 标签 / 徽章 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:500;line-height:1.4;
  color:var(--c-secondary);
  background:rgba(91,61,245,.08);
  border:1px solid rgba(91,61,245,.18);
}
.pill-light{
  color:#fff;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
}
.badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:16px;
  background:rgba(91,61,245,.08);
  border:1px solid rgba(91,61,245,.18);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--grad);flex:none}
.badge b{font-size:20px;color:var(--c-secondary)}
.badge span{font-size:12px;color:var(--c-muted)}
.badge-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.20)}
.badge-dark b{color:var(--c-accent)}
.badge-dark span{color:rgba(255,255,255,.72)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px rgba(20,18,31,.05)}
.nav{display:flex;align-items:center;gap:32px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-size:14px;font-weight:800;letter-spacing:.5px;
}
.logo-text{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:34px;margin-left:12px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);
  padding:6px 0;transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-2px;height:2px;width:0;
  background:var(--c-primary);border-radius:2px;transform:translateX(-50%);
  transition:width .25s ease;
}
.nav-links a:hover{color:var(--c-primary)}
.nav-links a:hover::after{width:16px}
.nav-links a.active{color:var(--c-primary);font-weight:600}
.nav-links a.active::after{width:16px}
.nav-links a:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:4px;border-radius:4px}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);color:var(--c-text);background:#fff;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary);transform:translateY(-1px)}
.icon-btn:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:2px}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--c-line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:20px;height:1.5px;background:var(--c-ink);border-radius:2px;transition:transform .25s ease,opacity .2s ease}
.burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.burger:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:2px}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,18,31,.5);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:70;
}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:300px;max-width:84vw;z-index:80;
  background:#fff;border-radius:24px 0 0 24px;
  padding:28px 22px;display:flex;flex-direction:column;gap:4px;
  transform:translateX(100%);transition:transform .3s ease;
  box-shadow:-20px 0 48px rgba(20,18,31,.16);overflow-y:auto;
}
.drawer.show{transform:translateX(0)}
.drawer a.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 6px;
  font-size:18px;font-weight:500;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer a.drawer-link.active{color:var(--c-primary);font-weight:600}
.drawer .drawer-cta{margin-top:24px;width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-dark);
  color:#fff;padding:72px 0 80px;
}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none}
.hero::before{width:420px;height:420px;background:rgba(0,209,160,.18);top:-140px;right:-60px}
.hero::after{width:380px;height:380px;background:rgba(91,61,245,.18);bottom:-180px;left:-100px}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{
  color:#fff;font-size:40px;line-height:1.28;font-weight:800;
  letter-spacing:.4px;margin:20px 0 20px;
}
.hero .lead{font-size:17px;line-height:1.8;color:rgba(255,255,255,.78);max-width:560px}
.hero .note{font-size:14px;color:rgba(255,255,255,.60);margin-top:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14)}
.hero-media{position:relative;border-radius:var(--r-md);overflow:hidden;box-shadow:0 26px 60px rgba(0,0,0,.35)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(0,209,160,.34) 0%,rgba(91,61,245,.30) 55%,rgba(20,18,31,.55) 100%);
}
.hero-float{
  position:absolute;left:20px;bottom:20px;z-index:3;
  background:rgba(20,18,31,.72);border:1px solid rgba(255,255,255,.20);
  border-radius:16px;padding:12px 18px;backdrop-filter:blur(8px);
}
.hero-float b{display:block;font-size:22px;color:var(--c-accent);line-height:1.2}
.hero-float span{font-size:12px;color:rgba(255,255,255,.72)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:640px;margin-bottom:44px}
.section-head h2{font-size:28px;line-height:1.4;font-weight:700}
.section-head p{margin-top:14px;color:var(--c-muted);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-secondary);letter-spacing:.6px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--grad)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}

.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(0,209,160,.45)}

/* 左图右文介绍卡 */
.intro-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:40px;align-items:stretch}
.intro-media{position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:340px;box-shadow:var(--shadow-1)}
.intro-media img{width:100%;height:100%;object-fit:cover;min-height:340px}
.intro-media::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(0,209,160,.24),rgba(91,61,245,.30))}
.intro-body{padding:40px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--c-line);box-shadow:var(--shadow-1)}
.intro-body h2{font-size:28px}
.intro-body>p{margin-top:16px;color:var(--c-muted)}
.check-list{margin-top:26px;display:grid;gap:18px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list .ico{
  width:26px;height:26px;border-radius:9px;flex:none;margin-top:3px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(0,209,160,.12);color:var(--c-primary);font-size:12px;
}
.check-list b{display:block;font-size:16px;color:var(--c-ink);font-weight:600}
.check-list span{font-size:14px;color:var(--c-muted);line-height:1.7}

/* 双列图文卡 */
.duo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.duo-card{display:grid;grid-template-columns:168px 1fr;gap:22px;padding:24px;border-radius:var(--r-md);align-items:center}
.duo-card .thumb{border-radius:var(--r-sm);overflow:hidden;position:relative;aspect-ratio:4/3}
.duo-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.duo-card:hover .thumb img{transform:scale(1.05)}
.duo-card h3{font-size:20px;font-weight:600}
.duo-card p{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.75}
.duo-card .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:14px;font-weight:600;color:var(--c-primary);
}
.duo-card .more i{transition:transform .25s ease}
.duo-card:hover .more i{transform:translateX(4px)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;padding:28px 24px;border-radius:var(--r-md);background:#fff;
  border:1px solid var(--c-line);box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step::before{
  content:"";position:absolute;left:24px;top:0;width:44px;height:4px;border-radius:0 0 4px 4px;background:var(--grad);
}
.step .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;margin-bottom:16px;
  background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.18);
  color:var(--c-secondary);font-size:15px;
}
.step h3{font-size:17px;font-weight:600}
.step p{margin-top:10px;font-size:14px;color:var(--c-muted);line-height:1.75}

/* FAQ */
.faq-wrap{max-width:800px;margin:0 auto;display:grid;gap:16px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:20px;
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.faq-item:hover{border-color:rgba(0,209,160,.4)}
.faq-item[open]{border:1.5px solid var(--c-primary);background:linear-gradient(120deg,rgba(0,209,160,.04),rgba(91,61,245,.04));box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:-3px}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .2s ease}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-body{padding:0 24px 24px;font-size:15px;line-height:1.85;color:var(--c-muted)}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--grad-dark);border-radius:var(--r-lg);
  padding:52px 56px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:0 24px 60px rgba(20,18,31,.18);
}
.cta-band::before{content:"";position:absolute;width:360px;height:360px;border-radius:50%;filter:blur(80px);background:rgba(0,209,160,.18);top:-160px;right:-60px}
.cta-band::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;filter:blur(80px);background:rgba(91,61,245,.18);bottom:-160px;left:-40px}
.cta-copy{position:relative;z-index:2;max-width:620px}
.cta-copy h2{color:#fff;font-size:28px;line-height:1.4}
.cta-copy p{margin-top:14px;color:rgba(255,255,255,.72);font-size:15px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.cta-points .pill-light{font-size:12px}
.cta-action{position:relative;z-index:2;flex:none}

.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:28px;
  font-size:15px;font-weight:600;color:var(--c-primary);
}
.back-link i{transition:transform .25s ease}
.back-link:hover i{transform:translateX(-4px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:68px 0 28px;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.60);max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-col a:hover{color:var(--c-primary)}
.footer-col a:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:3px;border-radius:4px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.50);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:36px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .burger{display:flex}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:-1}
  .intro-grid{grid-template-columns:1fr}
  .duo-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 36px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .hero{padding:44px 0 52px}
  .hero h1{font-size:28px}
  .hero .lead{font-size:16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:22px}
  .intro-body{padding:24px}
  .intro-body h2{font-size:22px}
  .intro-media,.intro-media img{min-height:240px}
  .duo-card{grid-template-columns:1fr;padding:20px}
  .duo-card .thumb{aspect-ratio:16/9}
  .steps{grid-template-columns:1fr}
  .cta-copy h2{font-size:22px}
  .cta-band{padding:36px 24px;border-radius:24px}
  .cta-action{width:100%}
  .cta-action .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer{margin-top:56px}
}
@media (max-width:520px){
  body{font-size:15px}
  .hero h1{font-size:24px}
  .hero-actions .btn{width:100%}
  .badge{padding:8px 14px}
  .badge b{font-size:18px}
  .logo-text{font-size:15px}
  .nav{height:60px}
}

/* roulang page: article */
:root{
  --brand-a:#00D1A0;
  --brand-b:#5B3DF5;
  --brand-grad:linear-gradient(120deg,#00D1A0 0%,#5B3DF5 100%);
  --accent:#FFD24A;
  --ink:#14121F;
  --ink-soft:#241C4A;
  --text:#3D3D4E;
  --muted:#74748A;
  --line:#E7E7F0;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --info:#2E90FA;
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-pill:999px;
  --sh-1:0 2px 4px rgba(20,18,31,.04),0 12px 32px rgba(20,18,31,.06);
  --sh-2:0 8px 20px rgba(91,61,245,.14),0 24px 48px rgba(20,18,31,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,textarea{font-family:inherit}
::selection{background:rgba(0,209,160,.25)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 24px rgba(20,18,31,.05);
  background:rgba(255,255,255,.94);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--brand-grad);color:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;letter-spacing:.4px;
  box-shadow:0 6px 16px rgba(91,61,245,.28);
}
.logo-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.2px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links > a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-links > a::after{
  content:"";position:absolute;left:50%;bottom:0;
  width:0;height:1px;background:var(--brand-a);
  transform:translateX(-50%);
  transition:width .25s var(--ease);
}
.nav-links > a:hover{color:var(--brand-a)}
.nav-links > a:hover::after{width:100%}
.nav-links > a.active{color:var(--brand-a)}
.nav-links > a.active::after{width:16px}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  border:1px solid var(--line);
  color:var(--text);font-size:15px;background:#fff;
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--brand-a);border-color:rgba(0,209,160,.5);transform:translateY(-1px)}
.icon-btn:focus-visible{outline:2px solid rgba(0,209,160,.45);outline-offset:2px}
.burger{
  display:none;width:40px;height:40px;border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:#fff;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease)}
.burger.is-active span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.is-active span:nth-child(2){opacity:0}
.burger.is-active span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.drawer-cta{display:none}
.nav-mask{
  position:fixed;inset:0;background:rgba(20,18,31,.5);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 32px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),filter .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  border:1.5px solid transparent;white-space:nowrap;
}
.btn:focus-visible{outline:2px solid rgba(0,209,160,.4);outline-offset:3px}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 24px rgba(91,61,245,.24)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,209,160,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-sm{padding:10px 22px;font-size:14px}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand-a);color:var(--brand-a);background:rgba(0,209,160,.06)}
.btn-accent{background:var(--accent);color:var(--ink);font-weight:700}
.btn-accent:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,210,74,.32)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(91,61,245,.08);
  border:1px solid rgba(91,61,245,.18);
  font-size:12px;color:var(--muted);
}
.badge b{font-size:20px;font-weight:800;color:var(--brand-b);font-variant-numeric:tabular-nums}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-grad);flex:0 0 auto}
.badge.on-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.20);color:rgba(255,255,255,.72)}
.badge.on-dark b{color:var(--accent)}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13px;color:var(--text);
  transition:all .2s var(--ease);
}
.tag:hover{border-color:var(--brand-a);color:var(--brand-a);background:rgba(0,209,160,.06);transform:translateY(-2px)}
.cat-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:var(--brand-grad);color:#fff;
  font-size:13px;font-weight:600;letter-spacing:.2px;
}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;overflow:hidden;
  padding:56px 0 72px;
  background:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  color:#fff;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.16;mix-blend-mode:luminosity;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(420px 320px at 12% 18%,rgba(0,209,160,.18),transparent 70%),
    radial-gradient(480px 340px at 88% 78%,rgba(91,61,245,.18),transparent 72%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:32px}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-a)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:rgba(255,255,255,.86)}
.article-head{max-width:860px}
.article-head h1{
  font-size:40px;line-height:1.32;font-weight:800;color:#fff;
  margin:20px 0 22px;letter-spacing:.2px;
}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  font-size:14px;color:rgba(255,255,255,.72);
}
.meta-row .m-item{display:inline-flex;align-items:center;gap:7px}
.meta-row .divider{width:1px;height:14px;background:rgba(255,255,255,.22)}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ============ 正文布局 ============ */
.article-main{padding:64px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px;align-items:start}
.article-panel{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:36px;
  box-shadow:var(--sh-1);
}
.hero-cover{margin:0 0 32px}
.hero-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg)}
.hero-cover figcaption{font-size:12px;color:var(--muted);margin-top:10px;text-align:center}

.article-body{font-size:17px;line-height:1.9;color:var(--text);overflow-wrap:break-word}
.article-body > * + *{margin-top:20px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.5;font-weight:700;color:var(--ink);
  margin-top:44px;padding-left:16px;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:4px;
  background:var(--brand-grad);
}
.article-body h3{font-size:19px;line-height:1.6;font-weight:600;color:var(--ink);margin-top:32px;scroll-margin-top:96px}
.article-body p{margin:0}
.article-body strong{color:var(--ink);font-weight:700}
.article-body a{color:var(--brand-b);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#3d24c4}
.article-body ul,.article-body ol{padding-left:24px}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li + li{margin-top:8px}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;
  border-left:4px solid var(--brand-a);
  background:linear-gradient(120deg,rgba(0,209,160,.07),rgba(91,61,245,.06));
  border-radius:0 var(--r-md) var(--r-md) 0;
}
.article-body img{border-radius:var(--r-md);margin:24px auto;max-width:100%}
.article-body table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;font-size:15px;
  border-radius:var(--r-md);border:1px solid var(--line);
  margin:24px 0;
}
.article-body th{background:#F2F3FA;color:var(--ink);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body tr:last-child td{border-bottom:0}
.article-body pre{
  background:var(--ink);color:#EAEAF5;padding:20px;border-radius:var(--r-md);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}
.article-body hr{border:0;height:1px;background:var(--line);margin:32px 0}

.article-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.tag-group{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand-b);
  transition:color .2s var(--ease),gap .2s var(--ease);
}
.text-link i{transition:transform .2s var(--ease)}
.text-link:hover{color:var(--brand-a)}
.text-link:hover i{transform:translateX(4px)}

.empty-state{
  text-align:center;padding:72px 24px;
  border:1px dashed var(--line);border-radius:var(--r-lg);
  background:#FBFCFE;
}
.empty-state i{font-size:34px;color:var(--muted);margin-bottom:16px;display:block}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:22px}

/* ============ 侧栏 ============ */
.sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px}
.side-card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--sh-1);
}
.side-title{
  display:flex;align-items:center;gap:10px;
  font-size:15px;font-weight:700;color:var(--ink);
  padding-bottom:14px;margin-bottom:16px;border-bottom:1px solid var(--line);
}
.side-title i{color:var(--brand-a);font-size:14px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto}
.toc-link{
  display:block;font-size:14px;color:var(--muted);
  padding:7px 10px;border-radius:10px;border-left:2px solid transparent;
  transition:all .2s var(--ease);line-height:1.5;
}
.toc-link:hover{color:var(--brand-b);background:rgba(91,61,245,.05)}
.toc-link.is-sub{padding-left:22px;font-size:13px}
.toc-link.is-current{color:var(--brand-a);border-left-color:var(--brand-a);background:rgba(0,209,160,.08);font-weight:600}
.toc-empty{font-size:13px;color:var(--muted);line-height:1.7}
.side-cta{
  border-radius:var(--r-lg);padding:26px;color:#fff;
  background:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  position:relative;overflow:hidden;
}
.side-cta::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(220px 160px at 85% 12%,rgba(0,209,160,.28),transparent 70%);
}
.side-cta > *{position:relative;z-index:2}
.side-cta h3{font-size:19px;font-weight:800;color:#fff;margin-bottom:10px}
.side-cta p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:18px}
.side-cta .btn{width:100%}
.side-tags{display:flex;flex-wrap:wrap;gap:10px}
.side-tags .tag{font-size:12px;padding:6px 14px}

/* ============ 相关推荐 ============ */
.related{padding:0 0 88px}
.section-head{margin-bottom:32px}
.section-head h2{font-size:28px;line-height:1.4;font-weight:700;color:var(--ink)}
.section-head p{font-size:15px;color:var(--muted);margin-top:10px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(0,209,160,.35)}
.related-card .thumb{overflow:hidden}
.related-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease)}
.related-card:hover .thumb img{transform:scale(1.04)}
.related-card .body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.related-card h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--ink)}
.related-card p{font-size:14px;line-height:1.7;color:var(--muted)}
.related-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}

/* ============ FAQ ============ */
.faq-section{padding:0 0 88px}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  border:1px solid var(--line);border-radius:20px;background:var(--card);
  overflow:hidden;transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item[open]{border-color:var(--brand-a);box-shadow:0 10px 28px rgba(0,209,160,.10);background:linear-gradient(120deg,rgba(0,209,160,.04),rgba(91,61,245,.03))}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand-a);line-height:1;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text)}

/* ============ CTA 带 ============ */
.cta-band{padding:0 0 96px}
.cta-inner{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);padding:48px 56px;
  background:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-inner::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(360px 260px at 8% 20%,rgba(0,209,160,.20),transparent 70%),
    radial-gradient(400px 300px at 92% 82%,rgba(91,61,245,.22),transparent 72%);
}
.cta-inner > *{position:relative;z-index:2}
.cta-copy{max-width:620px}
.cta-copy h2{font-size:28px;line-height:1.4;font-weight:700;color:#fff;margin-bottom:12px}
.cta-copy p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72)}
.cta-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  font-size:12px;color:rgba(255,255,255,.82);
}
.cta-points i{color:var(--accent);font-size:11px}

/* ============ 页脚 ============ */
.site-footer{
  background:#fff;border-top:1px solid var(--line);
  padding:64px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--muted);margin-top:18px;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand-a)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:60;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);color:var(--ink);
  box-shadow:var(--sh-1);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .25s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--brand-a);border-color:var(--brand-a);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar > *{flex:1 1 300px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:40px}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:0;right:0;z-index:90;
    height:100vh;width:290px;max-width:86vw;
    background:#fff;border-radius:24px 0 0 24px;
    flex-direction:column;align-items:stretch;gap:0;
    padding:96px 24px 32px;
    transform:translateX(105%);
    transition:transform .32s var(--ease);
    box-shadow:-24px 0 60px rgba(20,18,31,.18);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links > a{
    height:56px;display:flex;align-items:center;
    font-size:18px;font-weight:500;width:100%;
    border-bottom:1px solid var(--line);padding:0;
  }
  .nav-links > a::after{display:none}
  .nav-links > a.active{color:var(--brand-a);font-weight:600}
  .drawer-cta{
    display:flex;margin-top:24px;width:100%;
  }
  .burger{display:flex}
  .nav-actions .btn-sm{display:none}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav{height:60px}
  .logo-text{font-size:15px}
  .article-hero{padding:36px 0 52px}
  .article-head h1{font-size:28px;line-height:1.38}
  .breadcrumb{margin-bottom:22px;font-size:13px}
  .article-main{padding:40px 0 64px}
  .article-panel{padding:22px;border-radius:var(--r-lg)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin-top:34px}
  .article-body h3{font-size:18px}
  .related{padding-bottom:64px}
  .section-head h2{font-size:22px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .faq-section{padding-bottom:64px}
  .faq-item summary{font-size:16px;padding:18px 18px}
  .faq-item .faq-body{padding:0 18px 18px}
  .cta-band{padding-bottom:64px}
  .cta-inner{padding:32px 24px;border-radius:var(--r-lg)}
  .cta-copy h2{font-size:22px}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sidebar{flex-direction:column}
  .sidebar > *{flex:none;width:100%}
}
@media (max-width:480px){
  .article-head h1{font-size:25px}
  .badge b{font-size:18px}
  .logo-text{font-size:14px}
  .logo-mark{width:30px;height:30px;font-size:12px}
  .btn{padding:13px 24px;font-size:14px}
  .to-top{right:16px;bottom:20px}
}

/* roulang page: category2 */
:root{
  --brand-1:#00D1A0;
  --brand-2:#5B3DF5;
  --accent:#FFD24A;
  --ink:#14121F;
  --ink-2:#241C4A;
  --text:#3D3D4E;
  --muted:#74748A;
  --line:#E7E7F0;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --info:#2E90FA;
  --grad:linear-gradient(120deg,#00D1A0 0%,#5B3DF5 100%);
  --dark:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  --r-xl:32px;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --sh-1:0 2px 4px rgba(20,18,31,.04),0 12px 32px rgba(20,18,31,.06);
  --sh-2:0 8px 20px rgba(91,61,245,.14),0 24px 48px rgba(20,18,31,.10);
  --font:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.28;font-weight:800;letter-spacing:.01em}
h1{font-size:40px}
h2{font-size:28px;font-weight:700}
h3{font-size:20px;font-weight:600;line-height:1.4}
p{margin:0}
button{font-family:inherit;cursor:pointer}
table{border-collapse:collapse}
:focus-visible{outline:2px solid rgba(0,209,160,.6);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 10px 26px rgba(20,18,31,.05)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad);
  color:#fff;font-weight:800;font-size:13px;display:grid;place-items:center;
  box-shadow:0 8px 18px rgba(91,61,245,.28);letter-spacing:.02em;
}
.logo-text{font-size:16px;font-weight:800;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;white-space:nowrap;transition:color .22s;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:1px;
  background:var(--brand-1);transform:translateX(-50%);transition:width .25s ease;
}
.nav-links a:hover{color:var(--brand-1)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{width:16px;height:2px;background:var(--brand-1)}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text);font-size:14px;
  transition:border-color .22s,color .22s,background .22s;
}
.icon-btn:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(0,209,160,.06)}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:12px;
  background:#fff;flex-direction:column;justify-content:center;gap:5px;align-items:center;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .25s,opacity .25s}
.burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(20,18,31,.5);opacity:0;visibility:hidden;
  transition:opacity .3s,visibility .3s;z-index:75;
}
.nav-overlay.open{opacity:1;visibility:visible}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;border-radius:999px;padding:14px 32px;font-size:15px;font-weight:600;
  transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s,filter .2s;
  cursor:pointer;line-height:1.2;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(0,209,160,.22)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 32px rgba(0,209,160,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(0,209,160,.24)}
.btn-ghost{background:transparent;border:1.5px solid var(--line);color:var(--text);padding:12.5px 30px}
.btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-2);background:rgba(0,209,160,.06);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:var(--ink);font-weight:700}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,210,74,.32)}
.btn-sm{padding:10px 22px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.dark .btn-ghost{border-color:rgba(255,255,255,.3);color:#fff}
.dark .btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-1);background:rgba(0,209,160,.10)}

/* ============ Badges / Tags ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.18);
  font-size:12px;color:var(--brand-2);font-weight:500;line-height:1.4;
}
.badge b{font-size:16px;font-weight:800;color:var(--brand-2);font-variant-numeric:tabular-nums}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad);flex:0 0 8px}
.badge-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.20);color:rgba(255,255,255,.78)}
.badge-dark b{color:var(--accent)}
.badge-row{display:flex;flex-wrap:wrap;gap:12px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:rgba(91,61,245,.08);color:var(--brand-2);font-size:13px;font-weight:600;
}
.tag-cyan{background:rgba(0,209,160,.10);color:#049A78}

/* ============ Breadcrumb ============ */
.crumb-bar{padding:26px 0 18px}
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);flex-wrap:wrap}
.crumb a{transition:color .2s}
.crumb a:hover{color:var(--brand-1)}
.crumb .sep{color:#C9C9D6}
.crumb .now{color:var(--ink);font-weight:600}

/* ============ Banner (分类页2 全宽横幅) ============ */
.banner{
  position:relative;border-radius:var(--r-xl);overflow:hidden;
  padding:64px;min-height:440px;display:flex;align-items:center;
  background-image:linear-gradient(120deg,rgba(20,18,31,.90) 0%,rgba(36,28,74,.76) 62%,rgba(91,61,245,.42) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  box-shadow:0 24px 60px rgba(20,18,31,.18);
}
.banner::before{
  content:"";position:absolute;width:520px;height:520px;left:-160px;bottom:-260px;
  background:radial-gradient(circle,rgba(0,209,160,.30),transparent 68%);
  filter:blur(70px);pointer-events:none;
}
.banner::after{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-180px;
  background:radial-gradient(circle,rgba(91,61,245,.38),transparent 68%);
  filter:blur(70px);pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:760px}
.banner .eyebrow-dark{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--accent);letter-spacing:.10em;margin-bottom:16px;
}
.banner h1{color:#fff;font-size:40px;line-height:1.28;margin-bottom:18px}
.banner .sub{font-size:18px;color:rgba(255,255,255,.80);line-height:1.7;max-width:38ch}
.banner .meta-line{margin-top:14px;font-size:14px;color:rgba(255,255,255,.62)}
.banner .badge-row{margin-top:28px}
.banner .actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:16px}

/* ============ Sections ============ */
.section{padding:88px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--brand-2);letter-spacing:.10em;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--grad)}
.lead{font-size:16px;color:var(--muted);margin-top:14px;line-height:1.85}

/* ============ Zigzag 图文条 ============ */
.zig{display:flex;flex-direction:column;gap:56px}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.zig-row.reverse .zig-media{order:2}
.zig-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;
  background:var(--grad);box-shadow:var(--sh-1);
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.zig-row:hover .zig-media img{transform:scale(1.04)}
.zig-media .float-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;
  background:rgba(20,18,31,.72);border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:12px;padding:8px 14px;border-radius:999px;backdrop-filter:blur(8px);
}
.zig-media .float-badge b{color:var(--accent);font-size:15px;font-variant-numeric:tabular-nums}
.zig-body h3{font-size:24px;font-weight:700;margin-bottom:14px}
.zig-body p{font-size:16px;color:var(--text);line-height:1.85;max-width:40ch}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.point-list li i{color:var(--brand-1);font-size:13px;margin-top:6px;flex:0 0 auto}
.link-more{display:inline-flex;align-items:center;gap:8px;margin-top:24px;font-size:15px;font-weight:600;color:var(--brand-2)}
.link-more i{transition:transform .22s}
.link-more:hover i{transform:translateX(4px)}
.link-more:hover{color:var(--brand-1)}

/* ============ 等级卡 ============ */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.tier-card{
  position:relative;display:flex;flex-direction:column;gap:16px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:transform .28s,box-shadow .28s,border-color .28s;
}
.tier-card::before{
  content:"";position:absolute;left:0;top:28px;bottom:28px;width:4px;border-radius:4px;background:var(--grad);
  opacity:0;transition:opacity .28s;
}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#DCD9EE}
.tier-card:hover::before{opacity:1}
.tier-card.featured{border:1.5px solid var(--brand-1);box-shadow:0 18px 44px rgba(0,209,160,.16);transform:translateY(-8px)}
.tier-card.featured:hover{transform:translateY(-12px)}
.tier-card.featured::before{opacity:1}
.tier-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.tier-head h3{font-size:20px;font-weight:700}
.rec-flag{
  background:var(--accent);color:var(--ink);font-size:12px;font-weight:800;
  padding:4px 12px;border-radius:999px;
}
.attr-list{margin-top:6px;display:flex;flex-direction:column}
.attr-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;padding:11px 0;
  border-bottom:1px solid var(--line);color:var(--text);
}
.attr-list li:last-child{border-bottom:0}
.attr-list li i{margin-top:5px;font-size:13px;flex:0 0 auto}
.attr-list li.on i{color:var(--brand-1)}
.attr-list li.off{color:var(--muted)}
.attr-list li.off i{color:#C9C9D6}
.tier-card .btn{margin-top:auto;width:100%}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);transition:transform .28s,box-shadow .28s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step-num{
  width:46px;height:46px;border-radius:14px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:800;
  font-variant-numeric:tabular-nums;margin-bottom:18px;
  box-shadow:0 10px 22px rgba(91,61,245,.24);
}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ FAQ ============ */
.faq{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq details{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:0 24px;transition:border-color .25s,background .25s,box-shadow .25s;
}
.faq details:hover{box-shadow:var(--sh-1)}
.faq details[open]{
  border:1.5px solid var(--brand-1);
  background:linear-gradient(120deg,rgba(0,209,160,.05),rgba(91,61,245,.05));
}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq summary .plus::before,.faq summary .plus::after{
  content:"";position:absolute;background:var(--brand-1);border-radius:2px;transition:transform .25s,opacity .25s;
}
.faq summary .plus::before{left:0;top:7px;width:16px;height:2px}
.faq summary .plus::after{left:7px;top:0;width:2px;height:16px}
.faq details[open] summary .plus::after{transform:rotate(90deg);opacity:0}
.faq .answer{padding:0 0 24px;font-size:15px;line-height:1.9;color:var(--text)}

/* ============ CTA ============ */
.cta-wrap{padding:0 0 88px}
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--dark);color:#fff;padding:56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:0 24px 60px rgba(20,18,31,.22);
}
.cta-card::before{
  content:"";position:absolute;width:460px;height:460px;right:-140px;top:-200px;
  background:radial-gradient(circle,rgba(0,209,160,.30),transparent 68%);
  filter:blur(60px);pointer-events:none;
}
.cta-card::after{
  content:"";position:absolute;width:360px;height:360px;left:-120px;bottom:-200px;
  background:radial-gradient(circle,rgba(91,61,245,.36),transparent 68%);
  filter:blur(60px);pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:560px}
.cta-copy h2{color:#fff;font-size:28px;margin-bottom:14px}
.cta-copy p{font-size:15px;color:rgba(255,255,255,.72);line-height:1.8}
.cta-copy .badge-row{margin-top:22px}
.cta-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:14px;flex:0 0 auto}
.back-home{display:inline-flex;align-items:center;gap:8px;margin-top:28px;font-size:15px;font-weight:600;color:var(--muted)}
.back-home i{transition:transform .22s}
.back-home:hover{color:var(--brand-2)}
.back-home:hover i{transform:translateX(-4px)}

/* ============ Footer ============ */
.site-footer{background:#14121F;color:rgba(255,255,255,.72);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.site-footer .logo-text{color:#fff}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.60);max-width:36ch}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s}
.footer-col a:hover{color:var(--brand-1)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.50);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 20px}
  .nav-links{gap:24px}
  .nav-links a{font-size:14px}
  .banner{padding:56px;min-height:420px}
  .banner h1{font-size:36px}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:300px;max-width:86vw;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:92px 24px 32px;transform:translateX(103%);
    transition:transform .3s ease;border-radius:24px 0 0 24px;
    box-shadow:-18px 0 48px rgba(20,18,31,.18);z-index:80;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{padding:16px 0;font-size:18px;border-bottom:1px solid var(--line)}
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--brand-1);font-weight:700}
  .burger{display:flex}
  .icon-btn{display:none}
  .section{padding:64px 0}
  .zig-row{grid-template-columns:1fr;gap:28px}
  .zig-row.reverse .zig-media{order:0}
  .tier-grid{grid-template-columns:repeat(2,1fr)}
  .tier-card.featured{transform:none}
  .tier-card.featured:hover{transform:translateY(-4px)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .banner{padding:48px 36px;min-height:380px}
  .banner h1{font-size:32px}
  .banner .sub{font-size:16px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:44px 36px}
  .cta-actions{flex-direction:row;flex-wrap:wrap;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  h1{font-size:28px}
  h2{font-size:22px}
  .nav{height:60px}
  .logo-text{font-size:15px}
  .nav-actions .btn-sm{padding:9px 18px;font-size:13px}
  .section{padding:56px 0}
  .banner{padding:36px 24px;min-height:340px;border-radius:var(--r-lg)}
  .banner h1{font-size:26px;line-height:1.35}
  .banner .sub{font-size:15px}
  .banner .actions .btn{width:100%}
  .tier-grid,.steps{grid-template-columns:1fr}
  .zig-body h3{font-size:21px}
  .cta-card{padding:36px 24px;border-radius:var(--r-lg)}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .banner{min-height:300px;padding:30px 18px}
  .banner h1{font-size:23px}
  .banner .badge-row .badge{padding:6px 12px;font-size:11px}
  .banner .badge b{font-size:14px}
  .btn{padding:12px 24px;font-size:14px}
  .tier-card,.step{padding:20px}
  .faq details{padding:0 16px}
  .faq summary{font-size:16px;padding:18px 0}
  .logo-mark{width:32px;height:32px;border-radius:10px;font-size:12px}
}

/* roulang page: category3 */
:root{
  --brand-1:#00D1A0;
  --brand-2:#5B3DF5;
  --brand-deep:#00A87F;
  --lemon:#FFD24A;
  --ink:#14121F;
  --ink-2:#241C4A;
  --text:#3D3D4E;
  --muted:#74748A;
  --line:#E7E7F0;
  --page:#F6F7FB;
  --card:#FFFFFF;
  --grad:linear-gradient(120deg,#00D1A0 0%,#5B3DF5 100%);
  --grad-dark:linear-gradient(160deg,#14121F 0%,#241C4A 100%);
  --r-lg:24px;
  --r-xl:32px;
  --r-md:16px;
  --sh-1:0 2px 4px rgba(20,18,31,.04),0 12px 32px rgba(20,18,31,.06);
  --sh-2:0 8px 20px rgba(91,61,245,.14),0 24px 48px rgba(20,18,31,.10);
  --sec-pad:88px;
  --font:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.75;
  color:var(--text);background:var(--page);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--font);line-height:1.3;font-weight:700}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid rgba(0,209,160,.55);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

/* 容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 32px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  border:1.5px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(0,209,160,.22)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,209,160,.32)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand-1);color:var(--brand-deep);background:rgba(0,209,160,.06);transform:translateY(-2px)}
.btn-lemon{background:var(--lemon);color:var(--ink);font-weight:700}
.btn-lemon:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,210,74,.32)}
.btn-sm{padding:10px 22px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 22px rgba(20,18,31,.05)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(91,61,245,.22);
}
.logo-text{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.nav-links{display:flex;align-items:center;justify-content:center;gap:14px;flex:1}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text);
  transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--brand-deep)}
.nav-links a.active{color:var(--brand-deep);background:rgba(0,209,160,.10)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  color:var(--text);border:1px solid var(--line);background:#fff;
  transition:color .2s,border-color .2s,background .2s,transform .2s;
}
.icon-btn:hover{color:var(--brand-2);border-color:rgba(91,61,245,.35);background:rgba(91,61,245,.06);transform:translateY(-1px)}
.burger{display:none;width:40px;height:40px;border-radius:12px;position:relative}
.burger span{
  position:absolute;left:11px;width:18px;height:1.5px;border-radius:2px;background:var(--ink);
  transition:transform .25s,opacity .25s,top .25s;
}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:20px}
.burger span:nth-child(3){top:25px}
.burger.open span:nth-child(1){top:20px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:20px;transform:rotate(-45deg)}

/* 抽屉 */
.nav-mask{
  position:fixed;inset:0;background:rgba(20,18,31,.5);opacity:0;visibility:hidden;
  transition:opacity .3s,visibility .3s;z-index:80;
}
.nav-mask.show{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:90;
  background:#fff;border-radius:24px 0 0 24px;padding:26px 22px 30px;
  transform:translateX(105%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(20,18,31,.16);
  overflow-y:auto;
}
.nav-drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--muted)}
.drawer-close:hover{color:var(--brand-2);border-color:rgba(91,61,245,.35)}
.drawer-links{display:flex;flex-direction:column;margin:8px 0 0}
.drawer-links a{
  height:56px;display:flex;align-items:center;font-size:18px;font-weight:500;
  color:var(--text);border-bottom:1px solid var(--line);transition:color .2s,padding-left .2s;
}
.drawer-links a:hover{color:var(--brand-deep);padding-left:6px}
.drawer-links a.active{color:var(--brand-deep)}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%}

/* 页面头（居中窄栏） */
.page-head{
  position:relative;padding:92px 0 68px;background:
    radial-gradient(560px 300px at 12% 0%,rgba(0,209,160,.14),transparent 70%),
    radial-gradient(560px 300px at 88% 8%,rgba(91,61,245,.14),transparent 70%),
    #fff;
  border-bottom:1px solid var(--line);overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:120px;height:4px;border-radius:4px;background:var(--grad);
}
.page-head-inner{max-width:840px;margin:0 auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.18);
  color:var(--brand-2);font-size:13px;font-weight:600;letter-spacing:.4px;
}
.eyebrow i{font-size:12px}
.page-head h1{
  font-size:40px;line-height:1.25;font-weight:800;margin:22px 0 18px;letter-spacing:-.4px;
}
.page-head h1 .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{max-width:660px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--muted)}
.badge-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin-top:30px}
.badge{
  display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:16px;
  background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.18);
  transition:transform .22s,box-shadow .22s;
}
.badge:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(91,61,245,.12)}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad)}
.badge b{font-size:20px;font-weight:800;color:var(--brand-2);font-variant-numeric:tabular-nums;line-height:1}
.badge span{font-size:12px;color:var(--muted)}
.head-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:34px}

/* 通用板块 */
.section{padding:var(--sec-pad) 0}
.section-alt{background:#fff}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.4px;color:var(--brand-deep);
  text-transform:uppercase;margin-bottom:14px;
}
.sec-head h2{font-size:28px;line-height:1.35;font-weight:700}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.85}
.rule{width:56px;height:4px;border-radius:4px;background:var(--grad);margin-bottom:18px}
.center .rule{margin-left:auto;margin-right:auto}

/* 时间轴 */
.timeline{max-width:840px;margin:0 auto;position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:17px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,#00D1A0,#5B3DF5);
}
.tl-item{position:relative;padding-left:60px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:4px;width:36px;height:36px;border-radius:50%;
  background:#fff;border:1px solid var(--line);display:grid;place-items:center;
  font-size:12px;font-weight:800;color:var(--brand-2);font-variant-numeric:tabular-nums;
  box-shadow:0 4px 12px rgba(20,18,31,.06);transition:border-color .22s,transform .22s;
}
.tl-dot::after{
  content:"";position:absolute;inset:-5px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,209,160,.22),transparent 68%);opacity:0;transition:opacity .25s;
}
.tl-item:hover .tl-dot{border-color:var(--brand-1);transform:scale(1.06)}
.tl-item:hover .tl-dot::after{opacity:1}
.tl-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:transform .24s,box-shadow .24s,border-color .24s;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(0,209,160,.4)}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.tl-card p{font-size:15px;line-height:1.85;color:var(--muted);margin-bottom:14px}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(0,209,160,.10);color:var(--brand-deep);
  border:1px solid rgba(0,209,160,.22);
}
.chip-violet{background:rgba(91,61,245,.08);color:var(--brand-2);border-color:rgba(91,61,245,.18)}

/* 资源类型（不等宽两列） */
.res-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
.res-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:360px;
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.res-visual img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.res-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(20,18,31,.78) 0%,rgba(36,28,74,.45) 55%,rgba(0,209,160,.28) 100%);
}
.res-visual .res-copy{
  position:relative;z-index:2;padding:34px;color:#fff;height:100%;
  display:flex;flex-direction:column;justify-content:flex-end;
}
.res-visual h3{color:#fff;font-size:22px;font-weight:700;margin-bottom:12px}
.res-visual p{color:rgba(255,255,255,.76);font-size:14px;line-height:1.85;margin:0}
.float-badge{
  position:absolute;top:24px;left:24px;z-index:3;
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  color:#fff;font-size:12px;font-weight:600;backdrop-filter:blur(6px);
}
.float-badge b{color:var(--lemon);font-size:16px;font-weight:800;font-variant-numeric:tabular-nums}
.res-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.res-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px;
  box-shadow:var(--sh-1);transition:transform .24s,box-shadow .24s,border-color .24s;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.32)}
.res-card h3{font-size:18px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.res-card h3 i{color:var(--brand-2);font-size:15px}
.res-card ul{display:grid;gap:9px}
.res-card li{position:relative;padding-left:20px;font-size:14px;color:var(--muted);line-height:1.7}
.res-card li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:rgba(0,209,160,.85);
}

/* 校验清单 */
.check-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.check-item{
  display:flex;gap:12px;padding:18px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);transition:transform .22s,box-shadow .22s,border-color .22s;
}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--sh-1);border-color:rgba(0,209,160,.38)}
.check-item i{color:var(--brand-1);font-size:15px;margin-top:4px}
.check-item strong{display:block;font-size:15px;color:var(--ink);font-weight:600;margin-bottom:4px}
.check-item span{font-size:13.5px;color:var(--muted);line-height:1.7}
.tip-card{
  background:var(--grad-dark);border-radius:var(--r-lg);padding:32px;color:#fff;
  position:relative;overflow:hidden;
}
.tip-card::before{
  content:"";position:absolute;width:220px;height:220px;right:-70px;top:-70px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,209,160,.35),transparent 70%);filter:blur(30px);
}
.tip-card h3{color:#fff;font-size:19px;font-weight:700;margin-bottom:14px;position:relative}
.tip-card p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.9;position:relative}
.tip-card ul{display:grid;gap:10px;margin-top:18px;position:relative}
.tip-card li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.78)}
.tip-card li i{color:var(--lemon);font-size:12px;margin-top:6px}

/* FAQ */
.faq{max-width:800px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:20px;margin-bottom:14px;
  transition:border-color .24s,background .24s,box-shadow .24s;overflow:hidden;
}
.faq-item[open]{
  border:1.5px solid rgba(0,209,160,.6);
  background:linear-gradient(180deg,rgba(0,209,160,.05),rgba(91,61,245,.03));
  box-shadow:0 10px 28px rgba(91,61,245,.10);
}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:22px 26px;font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ico{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-ico::before{content:"";position:absolute;left:0;top:8px;width:18px;height:2px;border-radius:2px;background:var(--brand-1)}
.faq-ico::after{content:"";position:absolute;left:8px;top:0;width:2px;height:18px;border-radius:2px;background:var(--brand-1);transition:transform .2s ease}
.faq-item[open] .faq-ico::after{transform:scaleY(0)}
.faq-a{padding:0 26px 24px;font-size:15px;line-height:1.85;color:var(--muted)}

/* CTA 带 */
.join-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:48px 52px;
  background:var(--grad-dark);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:0 20px 50px rgba(20,18,31,.18);
}
.join-card::before{
  content:"";position:absolute;width:340px;height:340px;left:-90px;bottom:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,209,160,.38),transparent 70%);filter:blur(40px);
}
.join-card::after{
  content:"";position:absolute;width:300px;height:300px;right:-60px;top:-120px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,61,245,.42),transparent 70%);filter:blur(40px);
}
.join-copy{position:relative;z-index:2;max-width:600px}
.join-copy h2{color:#fff;font-size:28px;font-weight:700;margin-bottom:14px}
.join-copy p{color:rgba(255,255,255,.74);font-size:15px;line-height:1.85;margin-bottom:20px}
.join-points{display:flex;flex-wrap:wrap;gap:10px}
.join-points span{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);
  font-size:12px;color:rgba(255,255,255,.88);
}
.join-points i{color:var(--lemon);font-size:11px}
.join-actions{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:14px;flex-shrink:0}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);
  transition:color .2s,gap .2s;
}
.back-link:hover{color:var(--lemon);gap:12px}

/* 页脚 */
.site-footer{background:var(--grad-dark);color:rgba(255,255,255,.72);padding:72px 0 28px;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,61,245,.34),transparent 70%);filter:blur(60px);
}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:330px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.70);transition:color .2s,padding-left .2s}
.footer-col a:hover{color:var(--brand-1);padding-left:4px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--grad);color:#fff;display:grid;place-items:center;z-index:60;
  box-shadow:0 10px 26px rgba(91,61,245,.30);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s,visibility .28s,transform .28s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{filter:brightness(1.08)}

/* 响应式 */
@media (max-width:1279px){
  .nav-links{gap:6px}
  .nav-links a{padding:8px 10px;font-size:14.5px}
}
@media (max-width:1023px){
  :root{--sec-pad:72px}
  .nav-links{display:none}
  .burger{display:block}
  .res-grid{grid-template-columns:1fr}
  .res-visual{min-height:300px}
  .res-side{grid-template-rows:auto auto}
  .check-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .page-head h1{font-size:34px}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .container{padding:0 16px}
  .nav{height:60px}
  .nav-actions .btn-sm{display:none}
  .site-header.scrolled{box-shadow:0 3px 16px rgba(20,18,31,.06)}
  .page-head{padding:60px 0 52px}
  .page-head h1{font-size:28px;line-height:1.35}
  .lede{font-size:15px}
  .sec-head h2{font-size:22px}
  .section{padding:var(--sec-pad) 0}
  .timeline::before{left:15px}
  .tl-item{padding-left:52px;padding-bottom:26px}
  .tl-dot{width:32px;height:32px;font-size:11px}
  .tl-card{padding:20px}
  .check-list{grid-template-columns:1fr}
  .join-card{flex-direction:column;align-items:flex-start;padding:34px 24px;gap:28px}
  .join-copy h2{font-size:22px}
  .join-actions{width:100%;align-items:stretch}
  .join-actions .btn{width:100%}
  .back-link{justify-content:center}
  .faq-item summary{padding:18px 20px;font-size:15.5px}
  .faq-a{padding:0 20px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:480px){
  body{font-size:15px}
  .page-head{padding:48px 0 44px}
  .page-head h1{font-size:25px}
  .badge{padding:8px 14px;gap:8px}
  .badge b{font-size:17px}
  .head-actions .btn{width:100%}
  .btn{padding:13px 24px;font-size:14.5px}
  .res-visual .res-copy{padding:24px}
  .res-visual h3{font-size:19px}
  .join-copy h2{font-size:20px}
}

/* roulang page: category4 */
:root{
  --brand:#00D1A0;
  --brand-2:#5B3DF5;
  --lemon:#FFD24A;
  --ink:#14121F;
  --ink-2:#241C4A;
  --text:#3D3D4E;
  --muted:#74748A;
  --line:#E7E7F0;
  --bg:#F6F7FB;
  --card:#FFFFFF;
  --ok:#17B26A;
  --warn:#F79009;
  --err:#F04438;
  --info:#2E90FA;
  --grad:linear-gradient(120deg,#00D1A0 0%,#5B3DF5 100%);
  --r-lg:32px;
  --r-md:24px;
  --r-sm:16px;
  --sh-1:0 2px 4px rgba(20,18,31,.04),0 12px 32px rgba(20,18,31,.06);
  --sh-2:0 8px 20px rgba(91,61,245,.14),0 24px 48px rgba(20,18,31,.10);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.28}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px solid rgba(0,209,160,.4);outline-offset:2px;border-radius:8px}
.num{font-variant-numeric:tabular-nums;font-weight:800}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-2);font-weight:700;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--grad)}
.section-head h2{font-size:28px;line-height:1.35;font-weight:700}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(20,18,31,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:17px;letter-spacing:.01em}
.logo-mark{
  width:34px;height:34px;border-radius:11px;background:var(--grad);
  color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(91,61,245,.28);
}
.logo-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:-2px;height:1px;width:0;
  background:var(--brand);transform:translateX(-50%);transition:width .25s var(--ease);
}
.nav-links a:hover{color:var(--brand-2)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--brand-2);font-weight:600}
.nav-links a.active::after{width:16px;background:var(--brand);height:2px;border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:38px;height:38px;border-radius:999px;display:grid;place-items:center;
  color:var(--text);border:1px solid var(--line);background:#fff;
  transition:all .22s var(--ease);
}
.icon-btn:hover{color:var(--brand-2);border-color:rgba(91,61,245,.35);transform:translateY(-2px)}
.burger{display:none;width:40px;height:40px;border-radius:10px;position:relative}
.burger span{
  position:absolute;left:9px;right:9px;height:1.5px;background:var(--ink);border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:19.5px}
.burger span:nth-child(3){top:25px}
.burger.open span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:14px 32px;font-size:15px;font-weight:600;
  transition:all .22s var(--ease);border:1.5px solid transparent;white-space:nowrap;
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(91,61,245,.22)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,209,160,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-2);background:rgba(0,209,160,.06)}
.btn-ghost-dark{border-color:rgba(255,255,255,.3);color:#fff;background:transparent}
.btn-ghost-dark:hover{border-color:var(--brand);color:#fff;background:rgba(0,209,160,.14)}
.btn-lemon{background:var(--lemon);color:var(--ink);font-weight:700}
.btn-lemon:hover{color:var(--ink);filter:brightness(1.08);transform:translateY(-2px)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-2)}
.link-arrow i{transition:transform .22s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- badges & chips ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  background:rgba(91,61,245,.08);border:1px solid rgba(91,61,245,.18);
  font-size:12px;color:var(--muted);
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--grad)}
.badge b{color:var(--brand-2);font-size:15px;font-variant-numeric:tabular-nums;font-weight:800}
.badge-dark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.20);color:rgba(255,255,255,.72)}
.badge-dark b{color:var(--lemon)}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(0,209,160,.10);color:#0a8f74;border:1px solid rgba(0,209,160,.22);
}
.pill-purple{background:rgba(91,61,245,.09);color:#4a30cf;border-color:rgba(91,61,245,.2)}
.pill-amber{background:rgba(255,210,74,.18);color:#8a6200;border-color:rgba(255,210,74,.45)}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--muted);padding-top:32px}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{opacity:.5}

/* ---------- page hero ---------- */
.page-hero{padding:44px 0 26px}
.page-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start}
.page-hero h1{font-size:40px;line-height:1.24;font-weight:800;letter-spacing:-.01em;margin-bottom:18px}
.page-hero h1 .hl{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{font-size:17px;color:var(--text);max-width:640px}
.page-hero .meta-line{font-size:14px;color:var(--muted);margin-top:8px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-side{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);
}
.hero-side h3{font-size:17px;margin-bottom:14px;font-weight:600}
.hero-side ul li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text);padding:10px 0;border-bottom:1px solid var(--line);
}
.hero-side ul li:last-child{border-bottom:0;padding-bottom:0}
.hero-side ul li i{color:var(--brand);font-size:13px;margin-top:6px}

/* ---------- filter chips ---------- */
.filter-bar{
  margin-top:36px;padding:16px;border-radius:999px;background:#fff;
  border:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px;box-shadow:var(--sh-1);
}
.chip{
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:500;color:var(--muted);
  border:1px solid transparent;transition:all .2s var(--ease);
}
.chip:hover{color:var(--brand-2);background:rgba(91,61,245,.06)}
.chip.active{background:var(--grad);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(91,61,245,.22)}

/* ---------- card wall ---------- */
.card-wall{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  grid-auto-flow:dense;
}
.wall-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  display:flex;flex-direction:column;gap:14px;
}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(91,61,245,.22)}
.wall-card .card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.wall-card .ico{
  width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
  background:rgba(0,209,160,.10);color:#0a8f74;font-size:16px;
}
.wall-card h3{font-size:19px;line-height:1.45;font-weight:600}
.wall-card p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}
.wall-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted)}
.wide-2{grid-column:span 2}
.wide-3{grid-column:span 3;display:grid;grid-template-columns:5fr 7fr;gap:0;padding:0;overflow:hidden}
.wide-3 .media{position:relative;min-height:280px;overflow:hidden}
.wide-3 .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.wide-3:hover .media img{transform:scale(1.04)}
.wide-3 .media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,18,31,.72),rgba(36,28,74,.35));
}
.wide-3 .media .float-badge{
  position:absolute;left:20px;bottom:20px;z-index:2;
}
.wide-3 .body{padding:32px;display:flex;flex-direction:column;gap:14px;justify-content:center}
.wide-3 .body h3{font-size:22px}

/* ---------- verify compare ---------- */
.verify-list{border-top:1px solid var(--line)}
.v-row{
  display:grid;grid-template-columns:1.1fr .9fr 1.6fr;gap:20px;align-items:center;
  padding:22px 18px;border-bottom:1px solid var(--line);border-radius:14px;
  transition:background .2s var(--ease);
}
.v-row:hover{background:rgba(0,209,160,.06)}
.v-row .v-name{font-weight:600;color:var(--ink);font-size:16px;display:flex;align-items:center;gap:10px}
.v-row .v-name i{color:var(--brand-2);font-size:14px}
.v-row .v-scene{font-size:14px;color:var(--muted)}
.v-row .v-desc{font-size:14px;color:var(--text)}
.v-head{
  display:grid;grid-template-columns:1.1fr .9fr 1.6fr;gap:20px;
  padding:10px 18px;font-size:12px;letter-spacing:.08em;color:var(--muted);font-weight:700;
}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:20px 22px;box-shadow:0 2px 4px rgba(20,18,31,.03);
  transition:all .22s var(--ease);
}
.check-item:hover{border-color:rgba(0,209,160,.35);box-shadow:var(--sh-1);transform:translateY(-2px)}
.check-item .tick{
  width:24px;height:24px;border-radius:8px;background:rgba(0,209,160,.12);color:#0a8f74;
  display:grid;place-items:center;font-size:12px;flex:0 0 auto;margin-top:3px;
}
.check-item strong{display:block;font-size:15px;color:var(--ink);font-weight:600;margin-bottom:4px}
.check-item span{font-size:14px;color:var(--muted)}

/* ---------- dark band ---------- */
.dark-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  color:#fff;padding:56px;display:grid;grid-template-columns:6fr 5fr;gap:36px;align-items:center;
}
.dark-band::before,.dark-band::after{
  content:"";position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none;
}
.dark-band::before{width:340px;height:340px;background:rgba(0,209,160,.16);top:-120px;right:-60px}
.dark-band::after{width:300px;height:300px;background:rgba(91,61,245,.18);bottom:-140px;left:-80px}
.dark-band>*{position:relative;z-index:1}
.dark-band h2{color:#fff;font-size:28px;margin-bottom:14px}
.dark-band p{color:rgba(255,255,255,.72);font-size:15px}
.dark-band .steps{display:flex;flex-direction:column;gap:14px}
.dark-band .steps li{
  display:flex;gap:14px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:14px 18px;
}
.dark-band .steps li b{color:var(--lemon);font-variant-numeric:tabular-nums}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item[open]{border-color:var(--brand);border-width:1.5px;box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .sign{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-item summary .sign::before,
.faq-item summary .sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-item summary .sign::before{left:0;right:0;top:8px;height:2px}
.faq-item summary .sign::after{top:0;bottom:0;left:8px;width:2px}
.faq-item[open] summary .sign::after{transform:scaleY(0);opacity:0}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text)}

/* ---------- cta ---------- */
.cta-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;color:#fff;
  background:linear-gradient(120deg,#14121F 0%,#241C4A 100%);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-card::before{
  content:"";position:absolute;width:380px;height:380px;border-radius:50%;
  background:rgba(0,209,160,.16);filter:blur(80px);top:-160px;right:80px;
}
.cta-card>*{position:relative;z-index:1}
.cta-card h2{color:#fff;font-size:28px;margin-bottom:12px}
.cta-card p{color:rgba(255,255,255,.72);font-size:15px;max-width:520px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-points span{
  font-size:12px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.20);color:rgba(255,255,255,.85);
}
.back-home{margin-top:28px;text-align:center}

/* ---------- footer ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:88px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:320px}
.footer-col h4{font-size:15px;color:var(--ink);margin-bottom:16px;font-weight:600}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--brand-2)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}

/* ---------- drawer ---------- */
.mask{
  position:fixed;inset:0;background:rgba(20,18,31,.5);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:90;
}
.mask.show{opacity:1;visibility:visible}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:36px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .page-hero-grid{grid-template-columns:1fr;gap:28px}
  .card-wall{grid-template-columns:repeat(2,1fr)}
  .wide-3{grid-column:span 2;grid-template-columns:1fr}
  .wide-3 .media{min-height:220px}
  .v-row,.v-head{grid-template-columns:1fr 1fr;gap:14px}
  .v-row .v-desc{grid-column:span 2}
  .v-head span:last-child{display:none}
  .dark-band{grid-template-columns:1fr;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav{height:60px}
  .burger{display:block}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:288px;
    background:#fff;border-radius:24px 0 0 24px;
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 20px 28px;
    transform:translateX(100%);transition:transform .3s var(--ease);
    box-shadow:-20px 0 48px rgba(20,18,31,.16);z-index:100;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{
    font-size:18px;font-weight:500;padding:16px 6px;border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--brand-2)}
  .nav-links a.active::before{
    content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
    background:var(--brand);margin-right:10px;vertical-align:middle;
  }
  .nav-actions .btn-primary{display:none}
  .section{padding:56px 0}
  .page-hero{padding:32px 0 18px}
  .page-hero h1{font-size:28px}
  .page-hero .lead{font-size:16px}
  .section-head h2{font-size:22px}
  .card-wall{grid-template-columns:1fr}
  .wide-2,.wide-3{grid-column:span 1}
  .wide-3 .body{padding:24px}
  .check-grid{grid-template-columns:1fr}
  .faq-item summary{font-size:16px;padding:18px}
  .faq-item .faq-body{padding:0 18px 18px}
  .cta-card{flex-direction:column;align-items:flex-start;padding:32px}
  .cta-card .btn{width:100%}
  .dark-band{padding:32px}
  .v-row,.v-head{grid-template-columns:1fr;gap:6px}
  .v-row .v-desc{grid-column:span 1}
  .filter-bar{border-radius:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 24px;margin-top:56px}
}
@media (max-width:480px){
  body{font-size:15px}
  .page-hero h1{font-size:24px}
  .section-head h2{font-size:20px}
  .wall-card{padding:22px}
  .hero-side{padding:20px}
  .badge{padding:7px 12px}
  .btn{padding:12px 24px;font-size:14px}
}