/* roulang page: index */
:root{
  --brand:#12D6A1;
  --brand-hover:#22F0B8;
  --brand-down:#0BA87C;
  --amber:#FF9E2C;
  --blue:#4C8DFF;
  --bg:#060B12;
  --bg-2:#0B1220;
  --bg-3:#080E18;
  --glass:rgba(255,255,255,0.05);
  --line:rgba(255,255,255,0.10);
  --card:#0F1A26;
  --card-line:rgba(255,255,255,0.07);
  --text:#EAF2F8;
  --text-2:#9FB0C0;
  --text-3:#6C7C8C;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5D5D;
  --r-card:16px;
  --r-glass:18px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(18,214,161,.5),0 0 24px rgba(18,214,161,.35);
  --glow-lg:0 0 0 1px rgba(18,214,161,.55),0 0 36px rgba(18,214,161,.42);
  --container:1280px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:40px;line-height:48px;font-weight:800;letter-spacing:-.5px;}
h2{font-size:28px;line-height:36px;font-weight:700;}
h3{font-size:20px;line-height:28px;font-weight:600;}
p{font-size:16px;line-height:1.8;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px;}
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-3);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}
.section-sub{color:var(--text-2);font-size:15px;line-height:1.8;max-width:640px;margin-top:10px;}
.section-link{color:var(--blue);font-size:14px;font-weight:600;border-bottom:1px solid transparent;}
.section-link:hover{color:var(--brand-hover);border-bottom-color:var(--brand-hover);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04231A;box-shadow:var(--glow);}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:var(--glow-lg);}
.btn-primary:active{background:var(--brand-down);transform:translateY(1px);box-shadow:0 0 0 1px rgba(18,214,161,.35),0 0 12px rgba(18,214,161,.22);}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.22);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-hover);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-amber{background:var(--amber);color:#2A1600;}
.btn-amber:hover{background:#FFB454;transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;filter:grayscale(1);pointer-events:none;box-shadow:none;}

/* ---------- 顶部条 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:transparent;}
.topbar{
  height:36px;background:#04080E;border-bottom:1px solid rgba(255,255,255,.06);
  font-size:12px;color:var(--text-3);
}
.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:18px;overflow:hidden;white-space:nowrap;}
.topbar-left span{display:inline-flex;align-items:center;gap:6px;}
.topbar-left span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.8;}
.topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap;}
.topbar-right a:hover{color:var(--brand);}
.topbar-divider{width:1px;height:12px;background:rgba(255,255,255,.14);}

/* ---------- 主导航 ---------- */
.mainbar{
  background:rgba(6,11,18,.86);
  border-bottom:1px solid transparent;
  transition:background-color var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled .mainbar{
  background:rgba(8,14,24,.78);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.mainbar-inner{display:flex;align-items:center;gap:28px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),#0A8F6B);
  color:#04231A;font-weight:800;font-size:17px;letter-spacing:-.5px;
  box-shadow:0 0 0 1px rgba(18,214,161,.35),0 0 18px rgba(18,214,161,.28);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--text);}
.logo-text em{font-style:normal;color:var(--brand);}
.chip-nav{
  display:flex;align-items:center;gap:8px;flex:1;min-width:0;
  overflow-x:auto;scrollbar-width:none;padding:4px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 100%);
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid transparent;
  font-size:14px;font-weight:500;color:var(--text-2);white-space:nowrap;
}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.16);}
.chip.is-active{
  color:var(--brand-hover);border-color:rgba(18,214,161,.55);
  background:rgba(18,214,161,.08);font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-left:8px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);color:var(--text-2);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.5);}
.menu-btn{display:none;height:40px;padding:0 16px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.14);font-size:14px;color:var(--text-2);}
.menu-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.5);}

/* 移动抽屉 */
.drawer{
  display:none;background:rgba(8,14,24,.97);backdrop-filter:blur(18px);
  border-top:1px solid var(--line);padding:18px 0 24px;
}
.drawer.is-open{display:block;}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:18px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 4px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-list a:hover,.drawer-list a.is-active{color:var(--brand-hover);}
.drawer-list a span{font-size:12px;color:var(--text-3);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 12% 18%,rgba(18,214,161,.16),transparent 68%),
    radial-gradient(520px 380px at 88% 74%,rgba(255,158,44,.10),transparent 70%),
    radial-gradient(900px 600px at 60% 0%,rgba(76,141,255,.06),transparent 72%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 0,transparent 78%);
  mask-image:radial-gradient(circle at 50% 40%,#000 0,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid rgba(18,214,161,.4);
  background:rgba(18,214,161,.08);color:var(--brand-hover);
  font-size:12px;font-weight:600;margin-bottom:22px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand);}
.hero h1{margin-bottom:18px;}
.hero h1 span{color:var(--brand);}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.8;max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px 40px;}
.stat{display:flex;flex-direction:column;gap:2px;}
.stat b{font-size:26px;font-weight:800;color:var(--text);letter-spacing:-.5px;line-height:1.2;}
.stat b em{font-style:normal;font-size:14px;color:var(--brand);font-weight:700;margin-left:2px;}
.stat span{font-size:13px;color:var(--text-3);}

.hero-visual{position:relative;}
.hero-media{
  position:relative;border-radius:var(--r-glass);overflow:hidden;
  border:1px solid var(--line);background:var(--card);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.hero-media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:0;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0) 40%,rgba(6,11,18,.7) 100%);
}
.hero-float{
  position:absolute;left:0;bottom:0;width:min(72%,300px);
  padding:18px 20px;border-radius:var(--r-glass);
  background:rgba(255,255,255,.06);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);box-shadow:var(--shadow);
  transform:translate(22px,22px);
}
.hero-float .fl-label{font-size:12px;color:var(--text-3);margin-bottom:6px;}
.hero-float .fl-price{font-size:24px;font-weight:800;color:var(--amber);letter-spacing:-.5px;line-height:1.2;}
.hero-float .fl-meta{font-size:12px;color:var(--text-2);margin-top:6px;line-height:1.6;}
.hero-tag{
  position:absolute;right:-6px;top:24px;padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(8,14,24,.85);border:1px solid rgba(18,214,161,.4);
  font-size:12px;color:var(--brand-hover);font-weight:600;backdrop-filter:blur(10px);
}

/* ---------- 分类入口 一大三小 ---------- */
.cat-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:20px;}
.cat-feature{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--card);min-height:400px;
  display:flex;flex-direction:column;justify-content:flex-end;padding:28px;
}
.cat-feature img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.55;transition:transform 400ms ease-out;}
.cat-feature:hover img{transform:scale(1.04);}
.cat-feature::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,18,.15),rgba(6,11,18,.92));}
.cat-feature > *{position:relative;z-index:2;}
.cat-feature h3{font-size:24px;margin-bottom:8px;}
.cat-feature p{color:var(--text-2);font-size:14px;line-height:1.7;max-width:420px;margin-bottom:16px;}
.cat-feature .cat-count{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--brand-hover);font-weight:600;}
.cat-side{display:grid;gap:20px;}
.cat-row{
  display:flex;align-items:center;gap:18px;padding:20px;
  border-radius:var(--r-card);border:1px solid var(--card-line);background:var(--card);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.cat-row:hover{transform:translateY(-2px);border-color:rgba(18,214,161,.35);box-shadow:var(--shadow);}
.cat-row img{width:88px;height:66px;object-fit:cover;flex-shrink:0;}
.cat-row .cat-row-body{min-width:0;flex:1;}
.cat-row h3{font-size:17px;margin-bottom:4px;}
.cat-row p{font-size:13px;color:var(--text-3);line-height:1.6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.cat-row .arrow{color:var(--text-3);font-size:18px;flex-shrink:0;}
.cat-row:hover .arrow{color:var(--brand);}

/* ---------- 商品网格 ---------- */
.goods-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.goods-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--card-line);background:var(--card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.goods-card:hover{transform:translateY(-3px);border-color:rgba(18,214,161,.32);box-shadow:var(--shadow);}
.goods-media{position:relative;overflow:hidden;background:#0A1420;}
.goods-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform 400ms ease-out;}
.goods-card:hover .goods-media img{transform:scale(1.04);}
.goods-media::after{content:"";position:absolute;inset:0;background:rgba(6,11,18,0);transition:background-color var(--ease);}
.goods-card:hover .goods-media::after{background:rgba(6,11,18,.2);}
.badge{
  position:absolute;left:12px;top:12px;z-index:3;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(8,14,24,.82);color:var(--brand-hover);
  border:1px solid rgba(18,214,161,.45);backdrop-filter:blur(8px);
}
.badge-amber{color:var(--amber);border-color:rgba(255,158,44,.5);}
.goods-body{padding:20px;display:flex;flex-direction:column;flex:1;gap:8px;}
.goods-body h3{
  font-size:16px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.goods-body .goods-desc{font-size:13px;color:var(--text-3);line-height:1.6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.goods-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:10px;border-top:1px solid rgba(255,255,255,.06);}
.price{font-size:19px;font-weight:800;color:var(--amber);letter-spacing:-.3px;line-height:1.2;}
.price em{font-style:normal;font-size:12px;font-weight:600;margin-right:1px;}
.mini-btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(18,214,161,.45);color:var(--brand);
  font-size:13px;font-weight:600;background:transparent;
  transition:background-color var(--ease),color var(--ease),transform var(--ease);
}
.mini-btn:hover{background:var(--brand);color:#04231A;transform:translateY(-1px);}

/* ---------- 双列方案区 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.plan-card{
  border-radius:var(--r-glass);overflow:hidden;border:1px solid var(--line);
  background:rgba(255,255,255,.04);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.plan-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.plan-body{padding:24px;}
.plan-body h3{margin-bottom:10px;}
.plan-body p{color:var(--text-2);font-size:14px;line-height:1.85;margin-bottom:16px;}
.plan-list{display:flex;flex-direction:column;gap:10px;}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.plan-list li::before{content:"";flex-shrink:0;width:16px;height:16px;margin-top:5px;border-radius:5px;border:1px solid rgba(18,214,161,.5);background:rgba(18,214,161,.14);}
.spec-panel{
  border-radius:var(--r-glass);border:1px solid var(--card-line);background:var(--card);
  padding:24px;height:100%;
}
.spec-panel h3{margin-bottom:6px;}
.spec-panel p{font-size:14px;color:var(--text-3);margin-bottom:20px;line-height:1.7;}
.table-scroll{overflow-x:auto;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.08);}
table.spec{width:100%;border-collapse:collapse;min-width:520px;font-size:14px;}
table.spec th,table.spec td{padding:13px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.07);white-space:nowrap;}
table.spec thead th{background:rgba(18,214,161,.08);color:var(--brand-hover);font-weight:600;font-size:13px;}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:none;}
table.spec tbody th{font-weight:500;color:var(--text-2);}
table.spec tbody td{color:var(--text);}
table.spec tbody tr:hover{background:rgba(255,255,255,.02);}

/* ---------- 评价轮播 ---------- */
.review-wrap{position:relative;}
.review-track{
  display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 48px)/3);
  gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 2px 18px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  scroll-snap-align:start;padding:24px;border-radius:var(--r-glass);
  border:1px solid var(--card-line);background:var(--card);
  display:flex;flex-direction:column;gap:14px;
}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:44px;height:44px;border-radius:var(--r-pill);flex-shrink:0;
  display:grid;place-items:center;font-weight:700;font-size:15px;color:#04231A;
  background:linear-gradient(140deg,var(--brand),#0A8F6B);
}
.review-top .who b{display:block;font-size:15px;font-weight:600;}
.review-top .who span{font-size:12px;color:var(--text-3);}
.stars{color:var(--amber);font-size:14px;letter-spacing:2px;}
.review-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
.review-ctrl{display:flex;align-items:center;gap:14px;margin-top:6px;}
.ctrl-btn{
  width:44px;height:44px;border-radius:var(--r-pill);display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);
  color:var(--text-2);font-size:16px;transition:color var(--ease),border-color var(--ease),transform var(--ease);
}
.ctrl-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.5);transform:translateY(-1px);}
.dots{display:flex;gap:6px;align-items:center;}
.dots i{display:block;width:18px;height:3px;border-radius:2px;background:rgba(255,255,255,.18);transition:background-color var(--ease),width var(--ease);}
.dots i.on{background:var(--brand);width:30px;}

/* ---------- 保障条 ---------- */
.guard-band{border-top:1px solid rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.07);background:#05090F;padding:32px 0;}
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.guard-item{display:flex;gap:14px;align-items:flex-start;}
.guard-ico{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;
  border:1px solid rgba(18,214,161,.3);background:rgba(18,214,161,.07);color:var(--brand);
}
.guard-item b{display:block;font-size:15px;font-weight:600;margin-bottom:2px;}
.guard-item span{font-size:13px;color:var(--text-3);line-height:1.6;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;gap:12px;padding:22px;
  border-radius:var(--r-card);border:1px solid var(--card-line);background:var(--card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  height:100%;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(18,214,161,.3);box-shadow:var(--shadow);}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--text-3);}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--brand-hover);background:rgba(18,214,161,.1);
  border:1px solid rgba(18,214,161,.28);
}
.news-card h3{
  font-size:17px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:auto;font-size:13px;color:var(--blue);font-weight:600;}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;border-radius:var(--r-card);border:1px dashed rgba(255,255,255,.14);background:var(--card);
  text-align:center;
}
.empty-state .empty-ico{
  width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
  border:1px solid rgba(18,214,161,.3);background:rgba(18,214,161,.07);color:var(--brand);font-size:22px;
}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{
  border-radius:var(--r-card);border:1px solid var(--card-line);background:var(--card);
  overflow:hidden;transition:border-color var(--ease);
}
.faq-item.is-open{border-color:rgba(18,214,161,.35);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .plus{
  width:26px;height:26px;flex-shrink:0;position:relative;border-radius:8px;
  border:1px solid rgba(255,255,255,.18);transition:transform var(--ease),border-color var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);transform:translate(-50%,-50%);
  transition:background-color var(--ease);
}
.faq-q .plus::before{width:11px;height:1.5px;}
.faq-q .plus::after{width:1.5px;height:11px;}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);border-color:rgba(18,214,161,.6);}
.faq-item.is-open .faq-q .plus::before,.faq-item.is-open .faq-q .plus::after{background:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms ease-out;}
.faq-a-inner{padding:0 24px 22px 27px;border-left:3px solid var(--brand);margin-left:0;}
.faq-a-inner p{font-size:14px;color:var(--text-2);line-height:1.85;}

/* ---------- CTA 带 ---------- */
.cta-band{
  border-radius:var(--r-glass);border:1px solid var(--line);
  background:rgba(255,255,255,.05);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,214,161,.16),transparent 68%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{margin-bottom:8px;}
.cta-band p{color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid rgba(255,255,255,.08);background:#04080E;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-col li span{font-size:14px;color:var(--text-3);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
}
@media (max-width:1024px){
  h1{font-size:34px;line-height:42px;}
  h2{font-size:24px;line-height:32px;}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .hero{padding:56px 0 68px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;}
  .cat-grid{grid-template-columns:1fr;}
  .cat-feature{min-height:320px;}
  .goods-grid{grid-template-columns:repeat(3,1fr);}
  .split{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .guard-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .review-track{grid-auto-columns:calc((100% - 24px)/2);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .chip-nav{display:none;}
  .menu-btn{display:inline-flex;align-items:center;}
  .mainbar-inner{height:64px;gap:16px;}
  .header-actions .btn{display:none;}
  .header-actions{margin-left:auto;}
  .topbar{display:none;}
  .site-header{background:rgba(6,11,18,.94);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);}
  .goods-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:560px){
  h1{font-size:28px;line-height:36px;}
  h2{font-size:22px;line-height:30px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:40px 0 56px;}
  .hero-sub{font-size:16px;}
  .hero-float{position:static;width:100%;transform:none;margin-top:14px;border-radius:var(--r-glass);}
  .hero-tag{display:none;}
  .goods-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .review-track{grid-auto-columns:100%;}
  .guard-grid{grid-template-columns:1fr;}
  .hero-stats{gap:14px 28px;}
  .stat b{font-size:22px;}
  .cat-row img{width:72px;height:58px;}
  .faq-q{padding:17px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 18px 21px;}
}
@media (max-width:380px){
  .container{padding:0 14px;}
  h1{font-size:25px;line-height:32px;}
  .logo-text{font-size:17px;}
}

/* roulang page: article */
:root{
  --brand:#12D6A1;
  --brand-hover:#22F0B8;
  --brand-press:#0BA87C;
  --amber:#FF9E2C;
  --info:#4C8DFF;
  --bg:#060B12;
  --bg-soft:#0B1220;
  --bg-alt:#080E18;
  --panel:#0F1A26;
  --glass:rgba(255,255,255,.05);
  --glass-line:rgba(255,255,255,.10);
  --line:rgba(255,255,255,.07);
  --line-strong:rgba(255,255,255,.14);
  --text:#EAF2F8;
  --text-sub:#9FB0C0;
  --text-weak:#6C7C8C;
  --ok:#2ED47A;
  --warn:#FFB020;
  --danger:#FF5D5D;
  --r-card:16px;
  --r-glass:18px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(18,214,161,.5),0 0 24px rgba(18,214,161,.35);
  --glow-hover:0 0 0 1px rgba(18,214,161,.6),0 0 36px rgba(18,214,161,.45);
  --container:1280px;
  --sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --num:"Barlow","DIN Alternate","DIN Condensed",var(--sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(900px 480px at 12% -8%,rgba(18,214,161,.10),transparent 62%),
    radial-gradient(760px 420px at 92% 4%,rgba(255,158,44,.07),transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--info);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-inner-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-kicker{font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--brand);text-transform:uppercase;margin-bottom:10px}
.section-title{font-size:28px;font-weight:700}
.section-desc{color:var(--text-sub);font-size:15px;max-width:640px;margin-top:10px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(6,11,18,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.topbar{border-bottom:1px solid var(--line);font-size:12px;color:var(--text-weak)}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-promise{display:flex;gap:18px;flex-wrap:wrap}
.topbar-promise span{white-space:nowrap}
.topbar-links{display:flex;gap:18px;align-items:center}
.topbar-links a{color:var(--text-weak)}
.topbar-links a:hover{color:var(--brand)}
.header-main .container{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;padding-top:10px;padding-bottom:10px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;font-family:var(--num);font-weight:700;font-size:18px;color:#04120C;background:linear-gradient(140deg,var(--brand),#0BA87C);box-shadow:0 0 18px rgba(18,214,161,.35)}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.3px}
.logo-text em{font-style:normal;color:var(--brand);margin-left:2px}
.header-actions{display:flex;align-items:center;gap:14px}
.icon-btn{width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--line-strong);background:var(--glass);color:var(--text-sub);display:grid;place-items:center;cursor:pointer;transition:all .2s ease-out}
.icon-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.45);transform:translateY(-1px)}
.chip-nav{display:flex;gap:10px;overflow-x:auto;padding:0 0 12px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chip-nav::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-pill);border:1px solid transparent;color:var(--text-sub);font-size:14px;white-space:nowrap;transition:all .2s ease-out}
.chip:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.03)}
.chip.is-active{color:var(--brand);border-color:rgba(18,214,161,.55);background:rgba(18,214,161,.08)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease-out;white-space:nowrap}
.btn-primary{background:linear-gradient(140deg,var(--brand),#0BA87C);color:#04120C;box-shadow:var(--glow)}
.btn-primary:hover{background:linear-gradient(140deg,var(--brand-hover),var(--brand));color:#04120C;transform:translateY(-1px);box-shadow:var(--glow-hover)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(18,214,161,.45),0 0 12px rgba(18,214,161,.25)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:rgba(18,214,161,.5);color:var(--brand);background:rgba(18,214,161,.06);transform:translateY(-1px)}
.btn-sm{min-height:36px;padding:0 16px;font-size:13px}

/* ---------- breadcrumb + article head ---------- */
.crumb-bar{padding:26px 0 0;font-size:13px;color:var(--text-weak)}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.crumb a{color:var(--text-sub)}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:var(--text-weak);opacity:.6}
.crumb .current{color:var(--text-weak);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line)}
.article-head h1{font-size:40px;font-weight:800;letter-spacing:-.5px;line-height:1.28;max-width:960px}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:20px;font-size:13.5px;color:var(--text-sub)}
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;border:1px solid rgba(18,214,161,.4);background:rgba(18,214,161,.08);color:var(--brand)}
.badge-amber{border-color:rgba(255,158,44,.4);background:rgba(255,158,44,.08);color:var(--amber)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-weak);opacity:.6}

/* ---------- layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;padding:56px 0 96px;align-items:start}
.article-main{min-width:0}
.reading{max-width:800px}

/* ---------- article body ---------- */
.article-body{font-size:17.5px;line-height:1.9;color:#C8D6E3}
.article-body > * + *{margin-top:20px}
.article-body p{margin:20px 0 0;color:#C8D6E3}
.article-body h2{font-size:28px;font-weight:700;color:var(--text);line-height:1.4;margin:48px 0 0;padding-left:14px;border-left:3px solid var(--brand)}
.article-body h3{font-size:20px;font-weight:600;color:var(--text);line-height:1.5;margin:36px 0 0}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:28px 0 0}
.article-body ul,.article-body ol{margin:20px 0 0;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0;line-height:1.8;color:#C8D6E3}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{margin:28px 0 0;padding:18px 24px;border-left:3px solid var(--brand);border-radius:0 var(--r-img) var(--r-img) 0;background:var(--glass);border-top:1px solid var(--glass-line);border-right:1px solid var(--glass-line);border-bottom:1px solid var(--glass-line);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);color:var(--text-sub)}
.article-body img{margin:28px 0 0;width:100%;border-radius:var(--r-img);border:1px solid var(--line)}
.article-body figure{margin:28px 0 0}
.article-body figcaption{margin-top:10px;font-size:12px;color:var(--text-weak);text-align:center}
.article-body a{color:var(--info);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body strong{color:var(--text);font-weight:600}
.article-body hr{margin:40px 0 0;border:none;border-top:1px solid var(--line)}
.article-body table{width:100%;margin:28px 0 0;border-collapse:collapse;font-size:15px;border:1px solid var(--line-strong);border-radius:var(--r-img);overflow:hidden;font-variant-numeric:tabular-nums}
.article-body th{background:rgba(18,214,161,.06);color:var(--text);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line-strong)}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-sub)}
.article-body tr:last-child td{border-bottom:none}
.article-body code{font-family:var(--num);font-size:14.5px;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;color:var(--brand)}

.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:48px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row .label{font-size:13px;color:var(--text-weak)}
.tag{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line-strong);background:var(--panel);color:var(--text-sub);font-size:13px;transition:all .2s ease-out}
.tag:hover{color:var(--brand);border-color:rgba(18,214,161,.45);text-decoration:none}

.empty-state{margin-top:24px;padding:48px 28px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--r-card);background:var(--panel)}
.empty-state .es-icon{width:52px;height:52px;margin:0 auto 16px;border-radius:var(--r-pill);display:grid;place-items:center;border:1px solid rgba(18,214,161,.35);background:rgba(18,214,161,.08);color:var(--brand);font-size:22px}
.empty-state h2{font-size:20px}
.empty-state p{margin-top:10px;color:var(--text-sub);font-size:15px}
.empty-state .btn{margin-top:22px}

/* ---------- sidebar ---------- */
.side-col{position:sticky;top:120px;display:flex;flex-direction:column;gap:20px}
.side-card{border-radius:var(--r-card);border:1px solid var(--line);background:var(--panel);padding:22px}
.side-card.glass{background:var(--glass);border-color:var(--glass-line);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:var(--r-glass)}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px}
.toc-list li{margin:0}
.toc-list a{display:block;padding:8px 10px;border-radius:10px;color:var(--text-sub);font-size:14px;border-left:2px solid transparent;line-height:1.6;transition:all .2s ease-out}
.toc-list a:hover{color:var(--brand);background:rgba(18,214,161,.06);border-left-color:var(--brand)}
.toc-list a.is-level-3{padding-left:22px;font-size:13px;color:var(--text-weak)}
.side-links li + li{margin-top:10px}
.side-links a{display:flex;gap:10px;align-items:flex-start;color:var(--text-sub);font-size:14px;line-height:1.6}
.side-links a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.side-links .idx{font-family:var(--num);color:var(--brand);font-weight:700;font-size:13px;flex:0 0 auto}
.side-cta .btn{width:100%;margin-top:14px}
.side-cta p{font-size:13.5px;color:var(--text-sub)}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{display:block;border-radius:var(--r-card);border:1px solid var(--line);background:var(--panel);overflow:hidden;transition:all .2s ease-out;color:inherit}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(18,214,161,.3);box-shadow:var(--shadow);color:inherit}
.rel-thumb{aspect-ratio:4/3;overflow:hidden;border-radius:0}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease-out}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:22px}
.rel-body .badge{margin-bottom:12px}
.rel-body h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{margin-top:10px;font-size:14px;color:var(--text-sub);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{margin-top:14px;font-size:12.5px;color:var(--text-weak);font-family:var(--num)}

/* ---------- cta band ---------- */
.cta-band{border-radius:var(--r-glass);border:1px solid var(--glass-line);background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.cta-band h2{font-size:24px;font-weight:700}
.cta-band p{margin-top:10px;color:var(--text-sub);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{margin-top:0;border-top:1px solid var(--line);background:var(--bg-alt);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-sub);font-size:14px;line-height:1.8;max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col li + li{margin-top:10px}
.footer-col a,.footer-col span{color:var(--text-sub);font-size:14px}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-weak)}

/* ---------- drawer ---------- */
.drawer-btn{display:none}
.drawer{position:fixed;inset:0;z-index:90;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(3,6,10,.7);backdrop-filter:blur(4px)}
.drawer-panel{position:absolute;right:0;top:0;height:100%;width:min(340px,86vw);background:var(--bg-soft);border-left:1px solid var(--line);padding:26px 22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
.drawer-panel .logo{margin-bottom:16px}
.drawer-panel a.drawer-link{padding:13px 14px;border-radius:var(--r-input);color:var(--text-sub);border:1px solid transparent;font-size:15px}
.drawer-panel a.drawer-link:hover,.drawer-panel a.drawer-link.is-active{color:var(--brand);border-color:rgba(18,214,161,.4);background:rgba(18,214,161,.08)}
.drawer-close{align-self:flex-end;margin-bottom:8px}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;padding:40px 0 72px}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-head h1{font-size:32px}
  .header-main .container{min-height:64px}
  .chip-nav{padding-bottom:10px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section-title{font-size:22px}
  .header-main .container{flex-wrap:wrap;gap:14px}
  .chip-nav{margin-top:2px}
  .topbar .container{height:auto;padding-top:8px;padding-bottom:8px}
  .topbar-promise span:nth-child(n+3){display:none}
  .article-head h1{font-size:28px}
  .reading{max-width:none}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px;margin-top:38px}
  .article-body h3{font-size:18px}
  .cta-band{flex-direction:column;align-items:stretch;padding:28px 22px}
  .cta-actions .btn{flex:1 1 100%}
  .crumb .current{max-width:260px}
  .drawer-btn{display:inline-flex}
  .chip-nav{display:none}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .side-card{flex:1 1 100%}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-meta{gap:10px;font-size:13px}
}
@media (max-width:380px){
  .article-head h1{font-size:25px}
  .logo-text{font-size:17px}
  .btn{padding:0 18px;font-size:14px}
}

/* roulang page: category1 */
:root{
  --brand:#12D6A1;
  --brand-hover:#22F0B8;
  --brand-press:#0BA87C;
  --amber:#FF9E2C;
  --blue:#4C8DFF;
  --bg:#060B12;
  --bg-2:#0B1220;
  --bg-3:#080E18;
  --card:#0F1A26;
  --glass:rgba(255,255,255,0.05);
  --line:rgba(255,255,255,0.07);
  --line-2:rgba(255,255,255,0.10);
  --text:#EAF2F8;
  --text-2:#9FB0C0;
  --text-3:#6C7C8C;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5D5D;
  --r-card:16px;
  --r-glass:18px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(18,214,161,.5),0 0 24px rgba(18,214,161,.35);
  --glow-hover:0 0 0 1px rgba(18,214,161,.6),0 0 36px rgba(18,214,161,.45);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","DIN Alternate","Helvetica Neue",Arial,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;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
p{margin:0;}
button{font-family:inherit;border:0;background:none;color:inherit;cursor:pointer;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 顶部窄条 ---------- */
.topbar{
  background:var(--bg-3);
  border-bottom:1px solid var(--line);
  font-size:12px;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:36px;
  flex-wrap:wrap;
}
.topbar-list{display:flex;gap:20px;flex-wrap:wrap;}
.topbar-list li{display:flex;align-items:center;gap:6px;}
.topbar-link{color:var(--text-2);}
.topbar-link:hover{color:var(--brand);}
.dot{width:5px;height:5px;border-radius:50%;background:var(--brand);display:inline-block;}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease-out,border-color .25s ease-out,backdrop-filter .25s ease-out;
}
.site-header.is-stuck{
  background:rgba(6,11,18,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom-color:var(--line-2);
}
.header-main{
  display:flex;
  align-items:center;
  gap:24px;
  padding:16px 0;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--brand),#0d9c78);
  color:#04140f;
  font-family:var(--font-num);
  font-weight:800;
  font-size:19px;
  letter-spacing:-.5px;
  box-shadow:0 0 20px rgba(18,214,161,.28);
}
.logo-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.3px;
  color:var(--text);
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  color:var(--brand);
  margin-left:2px;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
  flex-shrink:0;
}
.icon-btn{
  width:42px;height:42px;
  display:grid;place-items:center;
  border-radius:var(--r-pill);
  border:1px solid var(--line-2);
  color:var(--text-2);
  transition:all .2s ease-out;
}
.icon-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.5);}
.menu-btn{
  display:none;
  align-items:center;
  gap:8px;
  padding:0 16px;
  height:42px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-2);
  color:var(--text-2);
  font-size:14px;
}
.menu-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.5);}

/* ---------- chip 分段导航 ---------- */
.chip-bar{
  border-top:1px solid var(--line);
  position:relative;
}
.chip-bar::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:40px;
  background:linear-gradient(90deg,var(--bg),rgba(6,11,18,0));
  pointer-events:none;
  z-index:2;
}
.chip-nav{
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:9px 20px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  color:var(--text-2);
  font-size:14px;
  font-weight:500;
  white-space:nowrap;
  transition:all .2s ease-out;
}
.chip:hover{
  color:var(--text);
  border-color:var(--line-2);
  background:rgba(255,255,255,.03);
}
.chip.is-active{
  color:var(--brand);
  border-color:rgba(18,214,161,.55);
  background:rgba(18,214,161,.08);
  font-weight:600;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:var(--brand);
  color:#04140f;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  background:var(--brand-hover);
  transform:translateY(-1px);
  box-shadow:var(--glow-hover);
}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-2);
}
.btn-ghost:hover{
  border-color:rgba(18,214,161,.55);
  color:var(--brand);
  transform:translateY(-1px);
}
.btn-amber{
  background:rgba(255,158,44,.12);
  color:var(--amber);
  border-color:rgba(255,158,44,.4);
}
.btn-amber:hover{
  background:rgba(255,158,44,.2);
  transform:translateY(-1px);
}
.btn-sm{min-height:38px;padding:0 18px;font-size:13px;}
.btn-block{width:100%;}
.btn[disabled]{filter:grayscale(40%);opacity:.45;pointer-events:none;box-shadow:none;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(720px 380px at 12% 0%,rgba(18,214,161,.14),rgba(6,11,18,0) 68%),
    radial-gradient(560px 320px at 92% 18%,rgba(255,158,44,.10),rgba(6,11,18,0) 70%),
    var(--bg);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.9;
  pointer-events:none;
  mask-image:radial-gradient(720px 420px at 20% 20%,#000 10%,transparent 78%);
  -webkit-mask-image:radial-gradient(720px 420px at 20% 20%,#000 10%,transparent 78%);
}
.hero-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
  padding:64px 0 72px;
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb span.current{color:var(--text-2);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(18,214,161,.35);
  background:rgba(18,214,161,.07);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:20px;
}
.hero h1{
  font-size:40px;
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.5px;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  line-height:1.85;
  max-width:560px;
  margin-bottom:28px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:32px;}
.metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
  max-width:560px;
}
.metric{
  padding:14px 16px;
  border-radius:var(--r-card);
  background:var(--card);
  border:1px solid var(--line);
}
.metric b{
  display:block;
  font-family:var(--font-num);
  font-size:24px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:-.5px;
  line-height:1.2;
}
.metric span{font-size:13px;color:var(--text-3);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-glass);
  border:1px solid var(--line-2);
}
.float-card{
  position:absolute;
  left:20px;
  bottom:20px;
  width:min(62%,240px);
  padding:14px 16px;
  border-radius:var(--r-glass);
  background:rgba(255,255,255,.07);
  border:1px solid var(--line-2);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.float-card strong{
  display:block;
  font-size:13px;
  color:var(--text);
  font-weight:600;
  margin-bottom:4px;
}
.float-card span{
  font-family:var(--font-num);
  font-size:15px;
  color:var(--amber);
  font-weight:600;
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--bg-3);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:48px;}
.section-head h2{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  margin-bottom:14px;
}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.8;}
.kicker{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:1.2px;
  color:var(--brand);
  margin-bottom:12px;
}

/* ---------- 一大三错落分类栅格 ---------- */
.cat-stagger{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:24px;
  align-items:stretch;
}
.cat-main{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  background:var(--card);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.cat-main:hover{border-color:rgba(18,214,161,.34);transform:translateY(-2px);}
.cat-main-media{position:relative;overflow:hidden;}
.cat-main-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
  transition:transform .35s ease-out;
}
.cat-main:hover .cat-main-media img{transform:scale(1.04);}
.cat-main-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0) 45%,rgba(6,11,18,.7) 100%);
}
.cat-main-body{padding:24px;}
.cat-main-body h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.cat-main-body p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:18px;}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  color:var(--text-2);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.03);
}
.tag-brand{color:var(--brand);border-color:rgba(18,214,161,.4);background:rgba(18,214,161,.08);}
.tag-amber{color:var(--amber);border-color:rgba(255,158,44,.35);background:rgba(255,158,44,.10);}
.cat-side{display:flex;flex-direction:column;gap:16px;}
.cat-item{
  display:grid;
  grid-template-columns:96px 1fr auto;
  gap:16px;
  align-items:center;
  padding:16px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line-2);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  flex:1;
}
.cat-item:hover{
  transform:translateY(-2px);
  border-color:rgba(18,214,161,.4);
  box-shadow:var(--shadow);
}
.cat-item img{
  width:96px;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:12px;
}
.cat-item h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.cat-item p{font-size:13px;color:var(--text-3);line-height:1.7;}
.cat-item .count{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--text-3);
  white-space:nowrap;
}
.cat-count{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:rgba(18,214,161,.08);
  border:1px solid rgba(18,214,161,.3);
  color:var(--brand);
  font-family:var(--font-num);
  font-size:12px;
  font-weight:600;
}

/* ---------- 横向图文说明 ---------- */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.feature-row + .feature-row{margin-top:80px;}
.feature-row.reverse .feature-media{order:2;}
.feature-media img{
  width:100%;
  aspect-ratio:5/4;
  object-fit:cover;
  border-radius:var(--r-glass);
  border:1px solid var(--line-2);
}
.feature-copy h2{font-size:26px;line-height:1.4;margin-bottom:16px;}
.feature-copy > p{color:var(--text-2);font-size:16px;line-height:1.85;margin-bottom:24px;}
.check-list{display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;}
.check-list .mark{
  flex:0 0 auto;
  width:22px;height:22px;
  margin-top:4px;
  border-radius:50%;
  display:grid;place-items:center;
  background:rgba(18,214,161,.12);
  border:1px solid rgba(18,214,161,.4);
  color:var(--brand);
  font-size:12px;
  font-weight:700;
  line-height:1;
}
.check-list strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px;}
.check-list span{font-size:14px;color:var(--text-3);line-height:1.75;}

.spec-strip{
  margin-top:32px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--card);
  overflow:hidden;
}
.spec-strip-row{
  display:grid;
  grid-template-columns:1.2fr .8fr .8fr;
  gap:12px;
  padding:14px 20px;
  font-size:14px;
  border-bottom:1px solid var(--line);
}
.spec-strip-row:last-child{border-bottom:0;}
.spec-strip-row.head{
  background:rgba(18,214,161,.06);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
}
.spec-strip-row strong{font-weight:600;color:var(--text);}
.spec-strip-row .num{font-family:var(--font-num);color:var(--amber);}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--card);
  overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item.is-open{border-color:rgba(18,214,161,.38);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 24px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-2);
  color:var(--brand);
  font-size:16px;
  line-height:1;
  transition:transform .25s ease-out,border-color .25s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:rgba(18,214,161,.5);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-item.is-open .faq-a{max-height:420px;}
.faq-a-inner{
  padding:0 24px 22px 24px;
  border-left:3px solid transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--brand);}

/* ---------- CTA 带 ---------- */
.cta-band{
  border-radius:var(--r-glass);
  border:1px solid var(--line-2);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:24px;line-height:1.4;margin-bottom:8px;}
.cta-band p{color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line-2);
  background:var(--bg-3);
  padding:72px 0 0;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:56px;
}
.footer-brand p{
  margin-top:18px;
  color:var(--text-3);
  font-size:14px;
  line-height:1.85;
  max-width:360px;
}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:20px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col span{
  color:var(--text-2);
  font-size:14px;
  line-height:1.7;
}
.footer-col a:hover{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:16px 0 20px;
}
.drawer.is-open{display:block;}
.drawer ul{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;}
.drawer a{
  display:block;
  padding:12px 4px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer a:hover{color:var(--brand);}
.drawer a.is-active{color:var(--brand);font-weight:600;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 32px;}
  .hero-inner{gap:40px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:48px 0 56px;}
  .hero-visual{order:-1;}
  .hero h1{font-size:34px;}
  .section{padding:72px 0;}
  .cat-stagger{grid-template-columns:1fr;}
  .feature-row{grid-template-columns:1fr;gap:32px;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-row + .feature-row{margin-top:64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .header-main{padding:12px 0;}
  .search-btn{display:none;}
  .menu-btn{display:inline-flex;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:16px;}
  .metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;}
  .metric{padding:12px;}
  .metric b{font-size:20px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:22px;}
  .feature-copy h2{font-size:20px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .site-footer{padding:48px 0 0;margin-top:64px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
  .cat-item{grid-template-columns:72px 1fr;gap:14px;}
  .cat-item img{width:72px;}
  .cat-item .count{grid-column:2;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .topbar-list li:nth-child(n+3){display:none;}
  .hero h1{font-size:26px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .metrics{grid-template-columns:1fr 1fr;}
  .cat-main-body{padding:20px;}
  .faq-q{padding:18px 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 18px 18px;}
  .spec-strip-row{grid-template-columns:1fr 1fr;font-size:13px;}
  .spec-strip-row span:last-child{display:none;}
}
@media (max-width:380px){
  .logo-text{font-size:16px;}
  .logo-mark{width:32px;height:32px;font-size:16px;}
  .hero h1{font-size:23px;}
  .metric b{font-size:18px;}
}

/* roulang page: category3 */
:root{
  --brand:#12D6A1;
  --brand-hi:#22F0B8;
  --brand-dark:#0BA87C;
  --amber:#FF9E2C;
  --blue:#4C8DFF;
  --bg:#060B12;
  --bg-2:#0B1220;
  --bg-3:#080E18;
  --card:#0F1A26;
  --glass:rgba(255,255,255,.05);
  --line:rgba(255,255,255,.07);
  --line-2:rgba(255,255,255,.10);
  --text:#EAF2F8;
  --text-2:#9FB0C0;
  --text-3:#6C7C8C;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5D5D;
  --r-card:16px;
  --r-glass:18px;
  --r-img:14px;
  --r-input:12px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(18,214,161,.5),0 0 24px rgba(18,214,161,.35);
  --shadow-glow-hi:0 0 0 1px rgba(18,214,161,.55),0 0 36px rgba(18,214,161,.42);
  --num-font:Barlow,"DIN Alternate","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease-out}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,214,161,.3);color:#fff}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ---------- 顶部窄条 ---------- */
.topbar{background:#050A10;border-bottom:1px solid var(--line);font-size:12px;color:var(--text-3)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}
.topbar-promo{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.topbar-promo span{display:inline-flex;align-items:center;gap:6px}
.topbar-promo i{width:5px;height:5px;border-radius:50%;background:var(--brand);display:inline-block}
.topbar-links{display:flex;align-items:center;gap:16px}
.topbar-links a{color:var(--text-3)}
.topbar-links a:hover{color:var(--brand)}
@media (max-width:768px){.topbar-inner{height:auto;padding:8px 0;flex-direction:column;align-items:flex-start;gap:4px}.topbar-links{display:none}}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(6,11,18,.86);backdrop-filter:blur(10px);transition:background .25s ease-out,border-color .25s ease-out}
.site-header.is-scrolled{background:rgba(11,18,32,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line-2)}
.header-inner{display:flex;align-items:center;gap:24px;padding:14px 40px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,#0BA87C 100%);
  color:#04140F;font-weight:800;font-size:18px;letter-spacing:-.5px;
  box-shadow:0 0 18px rgba(18,214,161,.32);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.4px;color:var(--text)}
.logo-text em{font-style:normal;color:var(--brand)}
.chip-nav{display:flex;align-items:center;gap:8px;flex:1 1 320px;min-width:0;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid transparent;color:var(--text-2);font-size:14px;white-space:nowrap;
  transition:all .2s ease-out;
}
.chip:hover{color:var(--text);border-color:rgba(18,214,161,.35)}
.chip.is-active{color:var(--brand);border-color:rgba(18,214,161,.5);background:rgba(18,214,161,.08)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);display:grid;place-items:center;
  border:1px solid var(--line-2);color:var(--text-2);background:var(--glass);transition:all .2s ease-out;
}
.icon-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.45)}
.menu-toggle{display:none;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:var(--r-pill);border:1px solid var(--line-2);color:var(--text-2);font-size:14px}
.menu-toggle:hover{color:var(--brand);border-color:rgba(18,214,161,.45)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:all .2s ease-out;border:1px solid transparent;cursor:pointer;white-space:nowrap;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#04140F;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:var(--brand-hi);transform:translateY(-1px);box-shadow:var(--shadow-glow-hi)}
.btn-primary:active{background:var(--brand-dark);transform:translateY(1px);box-shadow:0 0 0 1px rgba(18,214,161,.4),0 0 12px rgba(18,214,161,.25)}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:rgba(18,214,161,.5);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-amber{border-color:rgba(255,158,44,.5);color:var(--amber);background:rgba(255,158,44,.08)}
.btn-amber:hover{background:rgba(255,158,44,.16);transform:translateY(-1px)}
.btn[disabled]{filter:grayscale(40%);opacity:.5;pointer-events:none;box-shadow:none}

/* 抽屉 */
.drawer{display:none;border-top:1px solid var(--line);background:rgba(8,14,24,.98);padding:16px 24px 24px}
.drawer.is-open{display:block}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.drawer-links a{padding:12px 14px;border-radius:var(--r-input);border:1px solid var(--line);color:var(--text-2)}
.drawer-links a.is-active{color:var(--brand);border-color:rgba(18,214,161,.45);background:rgba(18,214,161,.08)}
.drawer .btn{width:100%}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0}
.crumb ol{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.crumb li::after{content:"/";margin-left:8px;color:rgba(255,255,255,.18)}
.crumb li:last-child::after{display:none}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb li[aria-current]{color:var(--text-2)}

/* ---------- Hero（分类页3：居中矮版 + 底部指标条） ---------- */
.hero-cat3{position:relative;overflow:hidden;padding:56px 0 0;background:var(--bg-3);border-bottom:1px solid var(--line)}
.hero-cat3::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.28;
}
.hero-cat3::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 50% 30%,#000 0%,transparent 76%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 0%,transparent 76%);
}
.hero-cat3 .glow-a,.hero-cat3 .glow-b{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none}
.hero-cat3 .glow-a{width:420px;height:420px;background:rgba(18,214,161,.20);top:-160px;left:6%}
.hero-cat3 .glow-b{width:340px;height:340px;background:rgba(255,158,44,.13);bottom:-140px;right:8%}
.hero-cat3 .container{position:relative;z-index:2}
.hero-cat3-inner{max-width:820px;margin:0 auto;text-align:center;padding-bottom:52px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid rgba(18,214,161,.4);background:rgba(18,214,161,.08);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.3px;
}
.hero-title{font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.5px;margin:20px 0 16px}
.hero-title span{color:var(--brand)}
.hero-sub{font-size:16px;color:var(--text-2);max-width:660px;margin:0 auto}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:28px}
.hero-metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border-top:1px solid var(--line);position:relative;z-index:2;
}
.hero-metrics .metric{background:rgba(8,14,24,.72);padding:20px 24px;text-align:center}
.metric-num{font-family:var(--num-font);font-size:26px;font-weight:700;color:var(--brand);line-height:1.2}
.metric-label{font-size:13px;color:var(--text-3);margin-top:4px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section.alt{background:var(--bg-2)}
.section.tint{background:var(--bg-3)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:1.2px;color:var(--brand);margin-bottom:10px}
.section-head h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
.section-head p{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px}

/* ---------- 步骤时间线 ---------- */
.steps{position:relative;margin-top:8px}
.steps::before{content:"";position:absolute;left:23px;top:12px;bottom:12px;width:1px;background:linear-gradient(180deg,rgba(18,214,161,.55),rgba(18,214,161,.08))}
.step{position:relative;display:grid;grid-template-columns:48px 1fr;gap:24px;align-items:start;padding:0 0 34px}
.step:last-child{padding-bottom:0}
.step-num{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:#0F1A26;border:1px solid rgba(18,214,161,.5);color:var(--brand);
  font-family:var(--num-font);font-size:18px;font-weight:700;position:relative;z-index:2;
  box-shadow:0 0 0 6px rgba(6,11,18,.9);
}
.step-card{background:#0F1A26;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;transition:border-color .2s ease-out,transform .2s ease-out}
.step-card:hover{border-color:rgba(18,214,161,.32);transform:translateY(-2px)}
.step-card h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px}
.step-card p{color:var(--text-2);font-size:15px}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;border:1px solid var(--line-2);color:var(--text-2);background:rgba(255,255,255,.03)}
.tag.brand{color:var(--brand);border-color:rgba(18,214,161,.4);background:rgba(18,214,161,.08)}
.tag.amber{color:var(--amber);border-color:rgba(255,158,44,.4);background:rgba(255,158,44,.08)}

/* ---------- 场景交错 ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:40px 0}
.scene + .scene{border-top:1px solid var(--line)}
.scene.reverse .scene-media{order:2}
.scene-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line-2);background:#0B1220}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,18,0) 40%,rgba(6,11,18,.55) 100%)}
.scene-index{font-family:var(--num-font);font-size:13px;font-weight:700;color:var(--amber);letter-spacing:1px}
.scene-text h3{font-size:22px;font-weight:700;line-height:1.4;margin:12px 0 14px}
.scene-text p{color:var(--text-2);font-size:15px}
.scene-list{margin-top:18px;display:grid;gap:10px}
.scene-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.scene-list li::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:10px}

/* ---------- 评价轮播 ---------- */
.rev-viewport{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:6px}
.rev-viewport::-webkit-scrollbar{display:none}
.rev-card{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;
  background:var(--glass);backdrop-filter:blur(18px);
  border:1px solid var(--line-2);border-radius:var(--r-glass);padding:24px;
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.rev-card:hover{border-color:rgba(18,214,161,.35);transform:translateY(-2px)}
.rev-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.rev-avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#16232F;border:1px solid var(--line-2);color:var(--brand);font-weight:700;font-family:var(--num-font)}
.rev-name{font-size:15px;font-weight:600}
.rev-src{font-size:12px;color:var(--text-3)}
.stars{display:flex;gap:3px;color:var(--amber);font-size:13px;letter-spacing:2px;margin-bottom:10px}
.rev-text{color:var(--text-2);font-size:15px}
.carousel-nav{display:flex;gap:10px}
.round-btn{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-2);background:var(--glass);backdrop-filter:blur(14px);
  color:var(--text-2);font-size:18px;transition:all .2s ease-out;
}
.round-btn:hover{color:var(--brand);border-color:rgba(18,214,161,.5)}
.rev-dots{display:flex;gap:8px;justify-content:center;margin-top:26px}
.rev-dots button{width:22px;height:4px;border-radius:2px;background:rgba(255,255,255,.14);transition:background .2s ease-out}
.rev-dots button.is-active{background:var(--brand)}

/* ---------- 保障条 ---------- */
.assure{background:#050A10;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.assure-item{padding:24px 26px;border-right:1px solid var(--line)}
.assure-item:last-child{border-right:0}
.assure-item strong{display:block;font-size:15px;font-weight:600;margin-bottom:6px}
.assure-item span{font-size:13px;color:var(--text-3)}
.assure-item i{display:inline-block;width:22px;height:2px;border-radius:2px;background:var(--brand);margin-bottom:14px}

/* ---------- CTA 带 + 表单 ---------- */
.cta-band{
  background:var(--glass);backdrop-filter:blur(18px);border:1px solid var(--line-2);
  border-radius:var(--r-glass);padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;
}
.cta-band h2{font-size:26px;font-weight:700;line-height:1.35;letter-spacing:-.3px}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:12px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.cta-form{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:13px;color:var(--text-2)}
.field label b{color:var(--amber)}
.field input,.field select{
  height:48px;padding:0 14px;border-radius:var(--r-input);
  background:#0B1220;border:1px solid var(--line-2);color:var(--text);font-size:15px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,214,161,.18);outline:none}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-hint{font-size:12px;color:var(--ok);min-height:18px}
.form-hint.is-error{color:var(--err)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line-2);background:#050A10;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col span{color:var(--text-3);font-size:14px}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--text-3);font-size:13px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .header-inner{padding:12px 24px;gap:16px}
  .section{padding:72px 0}
  .hero-cat3{padding:44px 0 0}
  .hero-title{font-size:32px}
  .scene{grid-template-columns:1fr;gap:28px;padding:32px 0}
  .scene.reverse .scene-media{order:0}
  .cta-band{grid-template-columns:1fr;gap:28px}
  .rev-card{flex:0 0 calc((100% - 20px)/2)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .chip-nav{order:3;flex:1 1 100%;padding-bottom:4px;border-top:1px solid var(--line);padding-top:10px}
  .menu-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .hero-metrics{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:28px}
  .section-head h2{font-size:22px}
  .assure-grid{grid-template-columns:repeat(2,1fr)}
  .assure-item{border-bottom:1px solid var(--line)}
  .assure-item:nth-child(2n){border-right:0}
  .field-row{grid-template-columns:1fr}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .header-inner{padding:10px 16px}
  .section{padding:56px 0}
  .step{grid-template-columns:36px 1fr;gap:16px}
  .steps::before{left:17px}
  .step-num{width:36px;height:36px;font-size:15px}
  .step-card{padding:20px}
  .rev-card{flex:0 0 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:380px){
  .hero-title{font-size:24px}
  .logo-text{font-size:17px}
  .btn{padding:0 16px;font-size:14px}
}

/* roulang page: category2 */
:root{
  --primary:#12D6A1;
  --primary-hi:#22F0B8;
  --primary-dark:#0BA87C;
  --accent:#FF9E2C;
  --info:#4C8DFF;
  --bg:#060B12;
  --bg-2:#0B1220;
  --bg-3:#080E18;
  --card:#0F1A26;
  --card-border:rgba(255,255,255,.07);
  --glass:rgba(255,255,255,.05);
  --glass-border:rgba(255,255,255,.10);
  --text:#EAF2F8;
  --text-2:#9FB0C0;
  --text-3:#6C7C8C;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5D5D;
  --r-card:16px;
  --r-glass:18px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(18,214,161,.5),0 0 24px rgba(18,214,161,.35);
  --shadow-glow-hi:0 0 0 1px rgba(18,214,161,.55),0 0 36px rgba(18,214,161,.42);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow","DIN Alternate","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 380px at 10% 2%,rgba(18,214,161,.14),transparent 70%),
    radial-gradient(520px 360px at 92% 8%,rgba(255,158,44,.10),transparent 72%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:8px}
::selection{background:rgba(18,214,161,.28)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;position:relative}
.site-header,.site-main,.site-footer{position:relative;z-index:2}
.section{padding:96px 0}
.section-dark{background:linear-gradient(180deg,rgba(8,14,24,.9),rgba(8,14,24,.6));border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.5px;
  color:var(--primary-hi);background:rgba(18,214,161,.08);
  border:1px solid rgba(18,214,161,.28);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(18,214,161,.9)}
h1{font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.5px}
h2{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.3px}
h3{font-size:20px;line-height:1.4;font-weight:600}
.section-desc{color:var(--text-2);font-size:15px;margin-top:14px;max-width:680px}
.text-accent{color:var(--accent)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#04140E;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:var(--primary-hi);box-shadow:var(--shadow-glow-hi);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-dark);box-shadow:0 0 0 1px rgba(18,214,161,.4)}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:rgba(18,214,161,.55);color:var(--primary-hi);transform:translateY(-1px)}
.btn-accent{background:rgba(255,158,44,.12);border-color:rgba(255,158,44,.45);color:var(--accent)}
.btn-accent:hover{background:rgba(255,158,44,.2);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;filter:grayscale(40%);pointer-events:none;box-shadow:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,18,.9);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease-out,border-color .25s ease-out;
}
.site-header.is-scrolled{background:rgba(9,15,24,.86);border-bottom-color:rgba(255,255,255,.08)}
.topbar{border-bottom:1px solid rgba(255,255,255,.05)}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:36px;font-size:12px;color:var(--text-3);
}
.topbar-inner .promise{display:inline-flex;align-items:center;gap:8px}
.topbar-inner .promise b{color:var(--text-2);font-weight:600}
.topbar-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.topbar-links a{color:var(--text-3);transition:color .2s}
.topbar-links a:hover{color:var(--primary-hi)}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.12)}
.site-header.is-scrolled .topbar{display:none}

.nav-inner{display:flex;align-items:center;gap:24px;min-height:74px;padding:11px 40px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#04140E;font-weight:800;font-size:18px;letter-spacing:-.5px;
  box-shadow:0 6px 18px rgba(18,214,161,.28);
}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-.3px}
.logo-text em{font-style:normal;color:var(--primary);font-size:13px;font-weight:600;margin-left:3px}
.chip-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 2px;flex:1 1 auto}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:9px 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease-out;
}
.chip:hover{color:var(--text);border-color:rgba(18,214,161,.35);background:rgba(255,255,255,.03)}
.chip.is-active{
  color:var(--primary-hi);font-weight:600;
  border-color:rgba(18,214,161,.55);background:rgba(18,214,161,.08);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  width:42px;height:42px;border-radius:var(--r-pill);display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.14);color:var(--text-2);
  transition:all .2s ease-out;
}
.icon-btn:hover{color:var(--primary-hi);border-color:rgba(18,214,161,.45)}
.icon-btn svg{width:18px;height:18px}
.menu-toggle{display:none;width:42px;height:42px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.14);place-items:center;color:var(--text-2)}
.menu-toggle span{display:block;width:16px;height:1.5px;background:currentColor;margin:3px auto;border-radius:2px;transition:.2s}
.menu-toggle.is-open span:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

.drawer{position:fixed;inset:0;z-index:70;pointer-events:none;opacity:0;transition:opacity .25s ease-out}
.drawer.is-open{pointer-events:auto;opacity:1}
.drawer-mask{position:absolute;inset:0;background:rgba(3,7,12,.7);backdrop-filter:blur(6px)}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(360px,86vw);height:100%;
  background:var(--bg-2);border-left:1px solid rgba(255,255,255,.08);
  padding:28px 24px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(100%);transition:transform .28s ease-out;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-title{font-size:13px;color:var(--text-3);margin:6px 0 10px;letter-spacing:.5px}
.drawer-panel a.drawer-link{
  padding:13px 14px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.07);
  color:var(--text-2);font-size:15px;transition:all .2s;
}
.drawer-panel a.drawer-link:hover,.drawer-panel a.drawer-link.is-active{
  color:var(--primary-hi);border-color:rgba(18,214,161,.45);background:rgba(18,214,161,.07)
}
.drawer-panel .btn{margin-top:16px}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 6px}
.crumb ol{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.crumb a{color:var(--text-3);transition:color .2s}
.crumb a:hover{color:var(--primary-hi)}
.crumb .sep{color:rgba(255,255,255,.2)}
.crumb .current{color:var(--text-2)}

/* ---------- 首屏（紧凑版） ---------- */
.hero-compact{padding:28px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{margin:18px 0 16px}
.hero-copy h1 .hl{color:var(--primary);}
.hero-sub{color:var(--text-2);font-size:16px;max-width:520px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:34px}
.hero-stats li{display:flex;flex-direction:column;gap:2px;position:relative;padding-left:14px}
.hero-stats li::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--primary),rgba(18,214,161,0))}
.hero-stats strong{font-family:var(--font-num);font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.3px}
.hero-stats span{font-size:13px;color:var(--text-3)}
.hero-media{position:relative;border-radius:var(--r-glass);overflow:hidden;border:1px solid var(--glass-border);box-shadow:var(--shadow)}
.hero-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0) 42%,rgba(6,11,18,.68) 100%);
}
.glass-float{
  position:absolute;left:18px;bottom:18px;z-index:2;
  width:min(58%,240px);padding:14px 16px;border-radius:var(--r-glass);
  background:rgba(15,26,38,.62);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--glass-border);display:flex;flex-direction:column;gap:4px;
}
.glass-float .float-label{font-size:11px;color:var(--text-3);letter-spacing:.6px}
.glass-float strong{font-family:var(--font-num);font-size:19px;color:var(--primary-hi);letter-spacing:-.2px}
.glass-float .float-note{font-size:12px;color:var(--text-2)}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  position:sticky;top:74px;z-index:40;
  background:rgba(8,14,24,.88);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(255,255,255,.06);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.site-header.is-scrolled ~ .site-main .anchor-bar{top:74px}
.anchor-inner{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;padding:12px 40px}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-title{font-size:12px;color:var(--text-3);letter-spacing:.6px;flex:0 0 auto;padding-right:6px;border-right:1px solid rgba(255,255,255,.1);margin-right:6px}
.anchor-inner a{
  flex:0 0 auto;font-size:14px;color:var(--text-2);padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;transition:all .2s ease-out;
}
.anchor-inner a:hover{color:var(--primary-hi);border-color:rgba(18,214,161,.4);background:rgba(18,214,161,.07)}

/* ---------- 对比表 ---------- */
.table-scroll{
  overflow-x:auto;border:1px solid var(--card-border);border-radius:var(--r-card);
  background:var(--card);box-shadow:var(--shadow);
}
.table-scroll::-webkit-scrollbar{height:8px}
.table-scroll::-webkit-scrollbar-thumb{background:rgba(18,214,161,.35);border-radius:8px}
.table-scroll::-webkit-scrollbar-track{background:rgba(255,255,255,.04)}
table.compare-table{width:100%;min-width:940px;border-collapse:collapse;font-size:14px}
table.compare-table caption{text-align:left}
table.compare-table th,table.compare-table td{
  padding:16px 18px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06);white-space:nowrap;
}
table.compare-table thead th{
  background:rgba(18,214,161,.06);color:var(--text-2);
  font-size:13px;font-weight:600;letter-spacing:.3px;
  border-bottom:1px solid rgba(18,214,161,.22);
}
table.compare-table tbody tr{transition:background-color .2s ease-out}
table.compare-table tbody tr:hover{background:rgba(18,214,161,.045)}
table.compare-table tbody tr:last-child td{border-bottom:0}
table.compare-table td:first-child,table.compare-table th:first-child{
  position:sticky;left:0;background:#0F1A26;color:var(--text);font-weight:600;z-index:1;
}
table.compare-table thead th:first-child{background:#0F2129}
table.compare-table td .model{display:block;font-size:12px;color:var(--text-3);font-weight:400;margin-top:2px}
table.compare-table td .k-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--text)}
table.compare-table td .price{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--accent);font-weight:600}
.rate{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-family:var(--font-num);font-size:14px}
.rate .bar{width:56px;height:4px;border-radius:4px;background:rgba(255,158,44,.18);overflow:hidden}
.rate .bar i{display:block;height:100%;border-radius:4px;background:var(--accent)}
.table-tip{margin-top:16px;font-size:13px;color:var(--text-3);display:flex;gap:8px;align-items:flex-start}
.table-tip::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:8px}

/* ---------- 双列图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:80px}
.split.reverse .split-media{order:2}
.split-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--card-border);box-shadow:var(--shadow)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease-out}
.split-media:hover img{transform:scale(1.03)}
.split-media .tag-float{
  position:absolute;left:16px;top:16px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--primary-hi);
  background:rgba(9,16,25,.72);border:1px solid rgba(18,214,161,.4);backdrop-filter:blur(10px);
}
.split-body h3{margin-bottom:14px}
.split-body p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.point-list{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.point-list li i{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;margin-top:5px;
  display:grid;place-items:center;background:rgba(18,214,161,.12);
  color:var(--primary);font-size:11px;font-style:normal;font-weight:700;
}
.point-list li b{color:var(--text);font-weight:600}

/* ---------- 实测指标 ---------- */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:44px}
.metric{
  padding:22px;border-radius:var(--r-card);background:var(--card);
  border:1px solid var(--card-border);transition:border-color .2s ease-out,transform .2s ease-out;
}
.metric:hover{border-color:rgba(18,214,161,.3);transform:translateY(-2px)}
.metric .m-value{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--primary);letter-spacing:-.5px;line-height:1.15}
.metric .m-value small{font-size:14px;color:var(--text-3);font-weight:500;margin-left:4px}
.metric .m-label{font-size:14px;color:var(--text);margin-top:8px;font-weight:600}
.metric .m-note{font-size:12px;color:var(--text-3);margin-top:4px}
.bar-panel{padding:28px;border-radius:var(--r-glass);background:var(--glass);border:1px solid var(--glass-border);backdrop-filter:blur(18px)}
.bar-panel h3{margin-bottom:8px}
.bar-panel > p{color:var(--text-2);font-size:14px;margin-bottom:26px}
.bar-row{display:grid;grid-template-columns:180px 1fr 64px;align-items:center;gap:18px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.bar-row:last-child{border-bottom:0}
.bar-row .b-name{font-size:14px;color:var(--text-2)}
.bar-track{height:8px;border-radius:8px;background:rgba(255,255,255,.06);overflow:hidden}
.bar-track i{display:block;height:100%;border-radius:8px;background:linear-gradient(90deg,var(--primary),rgba(18,214,161,.4))}
.bar-row:nth-child(3) .bar-track i{background:linear-gradient(90deg,var(--accent),rgba(255,158,44,.35))}
.bar-row .b-val{font-family:var(--font-num);font-size:14px;color:var(--text);text-align:right}

/* ---------- 对比维度 ---------- */
.dimension-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.dim-list{display:flex;flex-direction:column}
.dim-item{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.dim-item:first-child{padding-top:0}
.dim-item .d-idx{
  font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--primary);
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,214,161,.08);border:1px solid rgba(18,214,161,.3);
}
.dim-item h3{font-size:17px;margin-bottom:6px}
.dim-item p{font-size:14px;color:var(--text-2)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.tag{
  font-size:13px;color:var(--text-2);padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);transition:all .2s;
}
.tag:hover{color:var(--primary-hi);border-color:rgba(18,214,161,.45)}
.note-card{
  margin-top:28px;padding:24px;border-radius:var(--r-glass);
  background:var(--glass);border:1px solid var(--glass-border);
  border-left:3px solid var(--primary);backdrop-filter:blur(18px);
}
.note-card h3{font-size:17px;margin-bottom:10px}
.note-card p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border:1px solid var(--card-border);border-radius:var(--r-card);
  background:var(--card);overflow:hidden;transition:border-color .2s ease-out;
}
.faq-item:hover{border-color:rgba(18,214,161,.28)}
.faq-item.is-open{border-color:rgba(18,214,161,.45)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.16);color:var(--text-2);font-size:15px;line-height:1;
  transition:transform .25s ease-out,color .2s,border-color .2s;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--primary-hi);border-color:rgba(18,214,161,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq-a-inner{padding:0 24px 22px 24px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.is-open .faq-a{max-height:340px}

/* ---------- CTA 带 ---------- */
.cta-band{
  padding:44px;border-radius:var(--r-glass);
  background:linear-gradient(120deg,rgba(18,214,161,.10),rgba(255,255,255,.045) 46%,rgba(255,158,44,.09));
  border:1px solid var(--glass-border);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex:0 0 auto}

/* ---------- 保障条 ---------- */
.guard-bar{background:rgba(5,9,15,.9);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.guard-item{
  display:flex;align-items:center;gap:14px;padding:24px 26px;
  border-right:1px solid rgba(255,255,255,.06);
}
.guard-item:last-child{border-right:0}
.guard-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,214,161,.09);border:1px solid rgba(18,214,161,.28);color:var(--primary-hi);
}
.guard-icon svg{width:19px;height:19px}
.guard-item strong{display:block;font-size:15px;font-weight:600;color:var(--text)}
.guard-item span{font-size:12px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid rgba(255,255,255,.08);background:rgba(5,9,15,.92);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;padding-bottom:52px}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:330px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.3px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s ease-out}
.footer-col a:hover{color:var(--primary-hi);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px}
  .nav-inner{padding:11px 32px}
  .anchor-inner{padding:12px 32px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  h1{font-size:34px}
  h2{font-size:24px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .split + .split{margin-top:64px}
  .dimension-grid{grid-template-columns:1fr;gap:40px}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:repeat(2,1fr)}
  .guard-item:nth-child(2){border-right:0}
  .guard-item:nth-child(1),.guard-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.06)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .nav-inner{flex-wrap:wrap;row-gap:10px;padding:12px 32px}
  .chip-nav{order:3;flex:1 0 100%;margin:0 -4px;padding-bottom:2px}
  .anchor-bar{top:0}
}
@media (max-width:768px){
  .container{padding:0 24px}
  .nav-inner{padding:12px 24px}
  .anchor-inner{padding:12px 24px}
  .topbar-inner{font-size:11px}
  .topbar-links > *:not(.topbar-sep):nth-child(n+3){display:none}
  .menu-toggle{display:grid}
  .nav-actions .btn-primary{display:none}
  .section{padding:56px 0}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .hero-compact{padding:20px 0 48px}
  .hero-stats{gap:24px}
  .hero-stats strong{font-size:20px}
  .cta-band{padding:28px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .bar-row{grid-template-columns:120px 1fr 54px;gap:12px}
  .faq-q{padding:17px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px 18px}
  .site-footer{margin-top:64px;padding-top:56px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .nav-inner{padding:12px 16px}
  .anchor-inner{padding:12px 16px}
  .metric-strip{grid-template-columns:1fr}
  .guard-grid{grid-template-columns:1fr}
  .guard-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.06)}
  .guard-item:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .hero-media img{aspect-ratio:4/3}
  .glass-float{width:min(72%,260px);left:12px;bottom:12px;padding:12px 14px}
  .dim-item{grid-template-columns:48px 1fr;gap:14px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:380px){
  h1{font-size:25px}
  h2{font-size:20px}
  .btn{padding:10px 16px;font-size:14px}
  .logo-text{font-size:16px}
  .metric .m-value{font-size:26px}
}

/* roulang page: category4 */
/* ============ 设计令牌 ============ */
:root{
  --brand:#12D6A1;
  --brand-hover:#22F0B8;
  --brand-down:#0BA87C;
  --amber:#FF9E2C;
  --info:#4C8DFF;
  --bg:#060B12;
  --bg-2:#0B1220;
  --bg-alt:#080E18;
  --glass:rgba(255,255,255,.05);
  --glass-line:rgba(255,255,255,.10);
  --card:#0F1A26;
  --card-line:rgba(255,255,255,.07);
  --text:#EAF2F8;
  --text-2:#9FB0C0;
  --text-3:#6C7C8C;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5D5D;
  --mute:#4A5563;
  --r-card:16px;
  --r-glass:18px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(18,214,161,.5),0 0 24px rgba(18,214,161,.35);
  --glow-hover:0 0 0 1px rgba(18,214,161,.6),0 0 36px rgba(18,214,161,.45);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow","DIN Alternate","PingFang SC",system-ui,sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
*{margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(720px 420px at 12% -6%,rgba(18,214,161,.12),transparent 62%),
    radial-gradient(620px 380px at 92% 4%,rgba(255,158,44,.09),transparent 60%),
    linear-gradient(180deg,#060B12 0%,#080E18 55%,#060B12 100%);
  background-attachment:fixed;
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--info);text-decoration:none;text-underline-offset:3px;transition:color .2s ease-out,text-underline-offset .2s ease-out;}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:5px;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;outline:none;}
button{cursor:pointer;}
ul,ol{list-style:none;}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--text);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(18,214,161,.3);color:#fff;}

/* ============ 容器 ============ */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;}
@media (min-width:1440px){.container{max-width:1320px;}}

/* ============ 顶部窄条 ============ */
.topbar{
  background:rgba(6,11,18,.92);
  border-bottom:1px solid rgba(255,255,255,.06);
  font-size:12px;
  color:var(--text-3);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:36px;
}
.topbar-notes{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.topbar-notes span{white-space:nowrap;}
.topbar-notes span::before{
  content:"";display:inline-block;width:5px;height:5px;border-radius:50%;
  background:var(--brand);opacity:.85;margin-right:7px;vertical-align:1px;
}
.topbar-links{display:flex;align-items:center;gap:16px;}
.topbar-links a{color:var(--text-2);font-size:12px;}
.topbar-links a:hover{color:var(--brand);}

/* ============ 主头部 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,14,24,.86);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out;
  backdrop-filter:blur(10px);
}
.site-header.is-stuck{
  background:rgba(8,14,24,.72);
  backdrop-filter:blur(18px);
  border-bottom-color:rgba(255,255,255,.10);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.header-main{padding:14px 0 12px;}
.header-row{
  display:flex;align-items:center;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.logo:hover{text-decoration:none;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  font-family:var(--font-num);font-weight:800;font-size:19px;color:#04140F;
  background:linear-gradient(140deg,var(--brand),#0BA87C);
  box-shadow:0 0 0 1px rgba(18,214,161,.45),0 0 18px rgba(18,214,161,.28);
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--text);}
.logo-text em{font-style:normal;color:var(--brand);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:42px;height:42px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  transition:border-color .2s ease-out,color .2s ease-out,transform .2s ease-out,background .2s ease-out;
}
.icon-btn:hover{border-color:rgba(18,214,161,.55);color:var(--brand);background:rgba(18,214,161,.08);transform:translateY(-1px);}
.icon-btn:active{transform:translateY(1px);}
.menu-btn{display:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#0BA87C);
  color:#04140F;font-weight:700;
  box-shadow:var(--glow);
}
.btn-primary:hover{background:linear-gradient(135deg,var(--brand-hover),#12D6A1);box-shadow:var(--glow-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(18,214,161,.45),0 0 14px rgba(18,214,161,.25);}
.btn-ghost{
  border-color:rgba(255,255,255,.18);
  background:rgba(255,255,255,.03);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(18,214,161,.6);color:var(--brand);background:rgba(18,214,161,.08);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-amber{
  background:rgba(255,158,44,.14);
  border-color:rgba(255,158,44,.45);
  color:var(--amber);
}
.btn-amber:hover{background:rgba(255,158,44,.22);border-color:var(--amber);transform:translateY(-1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{
  filter:grayscale(60%);opacity:.4;cursor:not-allowed;box-shadow:none;transform:none;pointer-events:none;
}

/* ============ 分段标签导航 ============ */
.chip-nav{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;
  padding:2px 0 8px;
  margin-top:2px;
  -webkit-overflow-scrolling:touch;
  mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 14px),transparent 100%);
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  min-height:38px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.12);
  background:transparent;
  color:var(--text-2);
  font-size:14px;font-weight:600;
  transition:color .2s ease-out,border-color .2s ease-out,background .2s ease-out;
}
.chip:hover{color:var(--text);border-color:rgba(18,214,161,.45);background:rgba(18,214,161,.06);text-decoration:none;}
.chip.is-active{
  color:var(--brand);
  border-color:rgba(18,214,161,.65);
  background:rgba(18,214,161,.08);
  box-shadow:0 0 0 1px rgba(18,214,161,.2) inset;
}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(4,8,13,.72);
  backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;
  width:min(84vw,360px);
  background:var(--bg-2);
  border-left:1px solid rgba(255,255,255,.08);
  padding:22px 20px 32px;
  display:flex;flex-direction:column;gap:18px;
  transform:translateX(12px);
  transition:transform .25s ease-out;
  overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--text);}
.drawer-list{display:flex;flex-direction:column;gap:8px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;border-radius:var(--r-input);
  border:1px solid var(--card-line);background:var(--card);
  color:var(--text-2);font-size:15px;font-weight:600;
}
.drawer-list a:hover,.drawer-list a.is-active{color:var(--brand);border-color:rgba(18,214,161,.5);text-decoration:none;}
.drawer-list a::after{content:"›";font-size:18px;color:var(--text-3);}

/* ============ 通用板块 ============ */
main{display:block;}
.section{padding:96px 0;}
.section-alt{background:linear-gradient(180deg,rgba(8,14,24,.9),rgba(6,11,18,.9));border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05);}
.sec-head{margin-bottom:36px;max-width:820px;}
.sec-title{
  font-size:28px;font-weight:700;letter-spacing:-.3px;
  padding-left:14px;border-left:3px solid var(--brand);
  margin-bottom:10px;
}
.sec-sub{color:var(--text-2);font-size:15px;line-height:1.8;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:1px;
  color:var(--brand);
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(18,214,161,.4);
  background:rgba(18,214,161,.08);
  margin-bottom:16px;
}

/* ============ 页面头部横幅 ============ */
.page-hero{
  position:relative;
  padding:56px 0 48px;
  border-bottom:1px solid rgba(255,255,255,.06);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.22;z-index:0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(560px 300px at 16% 20%,rgba(18,214,161,.16),transparent 64%),
    linear-gradient(180deg,rgba(6,11,18,.55),rgba(6,11,18,.94));
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--mute);}
.breadcrumb .current{color:var(--text-2);}
.page-hero h1{
  font-size:40px;font-weight:800;letter-spacing:-.5px;line-height:1.2;
  margin-bottom:16px;max-width:900px;
}
.page-hero .lead{
  font-size:17px;line-height:1.85;color:var(--text-2);max-width:820px;margin-bottom:24px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;align-items:center;
  font-size:14px;color:var(--text-3);margin-bottom:28px;
}
.hero-meta b{color:var(--brand);font-weight:700;font-family:var(--font-num);font-size:17px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}

/* ============ 分栏布局：左目录 + 右长文 ============ */
.split{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.toc-side{position:sticky;top:108px;align-self:start;}
.toc-card{
  border-radius:var(--r-glass);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(18px);
  padding:20px;
  box-shadow:var(--shadow);
}
.toc-card h4{
  font-size:13px;font-weight:700;letter-spacing:1px;color:var(--text-3);
  text-transform:none;margin-bottom:12px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  border-left:2px solid transparent;
  font-size:14px;color:var(--text-2);
  line-height:1.5;
}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.04);text-decoration:none;}
.toc-list a.is-active{
  color:var(--brand);
  border-left-color:var(--brand);
  background:rgba(18,214,161,.08);
}
.toc-tip{
  margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.toc-tip a{font-weight:600;}

/* ============ 长文内容 ============ */
.content-body{max-width:820px;}
.article-block{margin-bottom:56px;scroll-margin-top:120px;}
.article-block:last-child{margin-bottom:0;}
.article-block h2{
  font-size:26px;font-weight:700;letter-spacing:-.3px;
  padding-left:14px;border-left:3px solid var(--brand);
  margin-bottom:16px;
}
.article-block h3{
  font-size:19px;font-weight:600;margin:26px 0 10px;color:var(--text);
}
.article-block p{color:var(--text-2);margin-bottom:16px;line-height:1.85;}
.article-block p strong{color:var(--text);font-weight:600;}
.article-block ul,.article-block ol{margin:0 0 18px;padding-left:0;display:flex;flex-direction:column;gap:8px;}
.article-block ul li,.article-block ol li{
  position:relative;padding-left:22px;color:var(--text-2);line-height:1.8;
}
.article-block ul li::before{
  content:"";position:absolute;left:4px;top:12px;
  width:6px;height:6px;border-radius:2px;background:var(--brand);opacity:.9;
}
.article-block ol{counter-reset:step;}
.article-block ol li{counter-increment:step;padding-left:30px;}
.article-block ol li::before{
  content:counter(step);
  position:absolute;left:0;top:5px;
  width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--font-num);font-size:12px;font-weight:700;color:var(--brand);
  border:1px solid rgba(18,214,161,.5);background:rgba(18,214,161,.08);
}
.callout{
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  border-left:3px solid var(--brand);
  background:var(--glass);
  backdrop-filter:blur(14px);
  padding:18px 22px;
  margin:22px 0;
  color:var(--text-2);font-size:15px;line-height:1.85;
}
.callout b{color:var(--brand);font-weight:700;}

/* ============ 数据表 ============ */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--card-line);
  background:var(--card);
  margin:20px 0 24px;
  -webkit-overflow-scrolling:touch;
}
table.data-table{width:100%;border-collapse:collapse;min-width:620px;}
table.data-table th,table.data-table td{
  padding:14px 18px;
  text-align:left;
  font-size:14px;
  border-bottom:1px solid rgba(255,255,255,.06);
  vertical-align:top;
}
table.data-table thead th{
  background:rgba(18,214,161,.06);
  color:var(--text);
  font-weight:700;
  font-size:13px;
  letter-spacing:.4px;
  white-space:nowrap;
}
table.data-table tbody tr:last-child td{border-bottom:none;}
table.data-table tbody tr:hover{background:rgba(255,255,255,.025);}
table.data-table td{color:var(--text-2);}
table.data-table td.num{font-family:var(--font-num);color:var(--amber);font-weight:600;white-space:nowrap;}

/* ============ 指标条 ============ */
.metric-row{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin:24px 0 8px;
}
.metric{
  border-radius:var(--r-card);
  border:1px solid var(--card-line);
  background:var(--card);
  padding:20px 22px;
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.metric:hover{border-color:rgba(18,214,161,.4);transform:translateY(-2px);}
.metric .val{
  font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--brand);
  line-height:1.1;margin-bottom:6px;font-variant-numeric:tabular-nums;
}
.metric .val.amber{color:var(--amber);}
.metric .lab{font-size:13px;color:var(--text-3);line-height:1.6;}

/* ============ 图文块 ============ */
.figure-block{
  display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;align-items:center;
  border-radius:var(--r-card);
  border:1px solid var(--card-line);
  background:var(--card);
  padding:22px;
  margin:24px 0;
}
.figure-block img{width:100%;height:180px;object-fit:cover;}
.figure-block p{margin-bottom:0;font-size:14px;color:var(--text-3);line-height:1.75;}

/* ============ FAQ 手风琴 ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  border-radius:var(--r-card);
  border:1px solid var(--card-line);
  background:var(--card);
  overflow:hidden;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.faq-item:hover{border-color:rgba(18,214,161,.28);}
.faq-item.is-open{border-color:rgba(18,214,161,.5);background:rgba(15,26,38,.95);}
.faq-q{
  width:100%;
  display:flex;align-items:center;gap:16px;
  padding:20px 22px;
  text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  border-left:3px solid transparent;
  transition:border-color .2s ease-out;
}
.faq-item.is-open .faq-q{border-left-color:var(--brand);}
.faq-q .idx{
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--text-3);
  flex:0 0 auto;min-width:24px;
}
.faq-item.is-open .faq-q .idx{color:var(--brand);}
.faq-q .txt{flex:1 1 auto;}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.16);
  color:var(--text-2);font-size:16px;line-height:1;
  transition:transform .25s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand);border-color:rgba(18,214,161,.6);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-a p{
  padding:0 22px 20px 62px;
  color:var(--text-2);font-size:15px;line-height:1.8;
}

/* ============ 场景卡 2x2 ============ */
.scene-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;
}
.scene-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-card);
  border:1px solid var(--card-line);
  background:var(--card);
  overflow:hidden;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(18,214,161,.3);box-shadow:var(--shadow);}
.scene-thumb{position:relative;overflow:hidden;border-radius:0;}
.scene-thumb img{width:100%;height:200px;object-fit:cover;border-radius:0;transition:transform .35s ease-out;}
.scene-card:hover .scene-thumb img{transform:scale(1.04);}
.scene-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0) 40%,rgba(6,11,18,.72) 100%);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(18,214,161,.45);
  background:rgba(18,214,161,.10);
  color:var(--brand);
}
.badge.amber{border-color:rgba(255,158,44,.45);background:rgba(255,158,44,.12);color:var(--amber);}
.scene-thumb .badge{position:absolute;top:14px;left:14px;z-index:2;backdrop-filter:blur(8px);}
.scene-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.scene-body h3{font-size:18px;font-weight:600;color:var(--text);}
.scene-body p{font-size:14px;color:var(--text-2);line-height:1.75;flex:1 1 auto;}
.scene-link{
  font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}
.scene-link:hover{text-decoration:none;color:var(--brand-hover);gap:10px;}
.scene-link::after{content:"→";transition:transform .2s ease-out;}

/* ============ CTA 带 ============ */
.cta-band{
  border-radius:var(--r-glass);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(18px);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:-70px;right:-40px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(18,214,161,.16),transparent 68%);
  pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:1;max-width:640px;}
.cta-band h2{font-size:24px;font-weight:700;margin-bottom:8px;letter-spacing:-.3px;}
.cta-band p{font-size:14px;color:var(--text-2);line-height:1.75;}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  border-top:1px solid rgba(255,255,255,.08);
  background:#050A10;
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:360px;}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.4px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:5px;}
.footer-col span{font-size:14px;color:var(--text-3);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);
  padding-top:22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .split{grid-template-columns:232px minmax(0,1fr);gap:36px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .toc-side{position:static;}
  .toc-card{padding:18px;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc-list a{
    border-left:none;border:1px solid rgba(255,255,255,.12);border-radius:var(--r-pill);
    padding:8px 14px;font-size:13px;
  }
  .toc-list a.is-active{border-color:rgba(18,214,161,.6);}
  .content-body{max-width:100%;}
  .page-hero h1{font-size:32px;}
  .metric-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .header-row{flex-wrap:wrap;gap:12px;}
  .logo-text{font-size:17px;}
  .chip-nav{order:3;width:100%;margin-top:4px;padding-bottom:10px;}
  .menu-btn{display:grid;}
  .search-btn{display:none;}
  .header-actions{gap:8px;}
  .scene-grid{grid-template-columns:1fr;}
  .figure-block{grid-template-columns:1fr;}
  .figure-block img{height:200px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .sec-title{font-size:22px;}
  .article-block h2{font-size:22px;}
  .page-hero{padding:40px 0 36px;}
  .page-hero h1{font-size:28px;}
  .page-hero .lead{font-size:16px;}
  .faq-q{font-size:15px;padding:18px;}
  .faq-a p{padding:0 18px 18px 18px;}
  .site-footer{margin-top:56px;padding:48px 0 24px;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .topbar-notes span:nth-child(2){display:none;}
  .metric-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-cta .btn{width:100%;}
  .scene-thumb img{height:172px;}
}
@media (max-width:380px){
  .container{padding:0 14px;}
  .page-hero h1{font-size:24px;}
  .sec-title{font-size:20px;}
  .article-block h2{font-size:20px;}
  .logo-mark{width:34px;height:34px;font-size:17px;}
  .logo-text{font-size:16px;}
  .badge{font-size:11px;padding:4px 10px;}
}