/* roulang page: index */
:root{
  --brand:#14504f;
  --brand-2:#1f6b69;
  --brand-deep:#0c3736;
  --brand-soft:#e6efee;
  --accent:#c9902e;
  --accent-soft:#fbf1dc;
  --ink:#172026;
  --ink-2:#2c3a43;
  --muted:#5f6b75;
  --bg:#f6f4ef;
  --bg-alt:#efece3;
  --card:#ffffff;
  --line:#e5e0d6;
  --line-strong:#d5cec0;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(23,32,38,.05),0 6px 18px rgba(23,32,38,.05);
  --shadow-md:0 10px 28px rgba(23,32,38,.10);
  --shadow-lg:0 20px 48px rgba(23,32,38,.16);
  --sp:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.2px;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(201,144,46,.6);outline-offset:2px;border-radius:6px}
.container{width:min(1180px,92vw);margin-inline:auto}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(23,32,38,.09)}
.header-top{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:64px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:13px;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;
  box-shadow:0 8px 18px rgba(20,80,79,.28);
}
.brand-mark svg{width:23px;height:23px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17.5px;font-weight:800;letter-spacing:.4px;color:var(--ink)}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.6px;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.head-search{
  display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line-strong);
  border-radius:999px;padding:0 14px;height:42px;
  transition:border-color .2s,box-shadow .2s;
}
.head-search:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(31,107,105,.12)}
.head-search svg{width:17px;height:17px;color:var(--muted);flex:0 0 17px}
.head-search input{
  border:0;background:transparent;outline:none;width:190px;
  font-size:14px;color:var(--ink);
}
.head-search input::placeholder{color:#97a1a9}

/* 频道 Tabs 行 */
.channel-bar{background:#fff;border-top:1px solid var(--line)}
.channel-scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding-block:9px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:40px;padding:0 18px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--muted);
  white-space:nowrap;transition:background .2s,color .2s,box-shadow .2s,transform .2s;
}
.channel:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.channel.is-active{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.24)}
.channel.is-active:hover{background:var(--brand-deep);color:#fff}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:700;letter-spacing:.4px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,80,79,.28)}
.btn-accent{background:var(--accent);color:#3a2a08;box-shadow:0 8px 18px rgba(201,144,46,.3)}
.btn-accent:hover{background:#b9801f;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-2);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ============ 通用板块 ============ */
.section{padding-block:var(--sp)}
.section--tint{background:var(--bg-alt)}
.section--white{background:#fff}
.section--dark{background:linear-gradient(150deg,var(--brand-deep),#123f3e 60%,#0a2c2b);color:#eaf1f0}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,44px)}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand-2);
  background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#d8e6e4}
.section-title{font-size:clamp(23px,2.7vw,31px);letter-spacing:.4px}
.section-title .hl{color:var(--brand-2)}
.section--dark .section-title .hl{color:var(--accent)}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.section--dark .section-desc{color:rgba(234,241,240,.78)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(38px,5vw,64px) 0 var(--sp);
  background:linear-gradient(180deg,#efece3 0%,var(--bg) 78%);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,107,105,.16),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:clamp(28px,4vw,58px);align-items:start;
}
.hero h1{
  font-size:clamp(30px,3.9vw,44px);
  line-height:1.24;letter-spacing:.6px;margin-top:6px;
}
.hero-lead{
  margin-top:20px;font-size:16px;line-height:1.9;color:var(--ink-2);max-width:60ch;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--brand);
  background:#fff;border:1px solid var(--line-strong);
  border-radius:999px;padding:7px 15px;
  transition:border-color .2s,box-shadow .2s,transform .2s;
}
.tag:hover{border-color:var(--brand-2);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;margin-top:30px;max-width:520px;
}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px 16px;box-shadow:var(--shadow-sm);
}
.stat b{display:block;font-size:22px;color:var(--brand);letter-spacing:.5px;line-height:1.2}
.stat span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px}

/* Hero 右侧资料卡 */
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden;
}
.panel-cover{position:relative;background:#0c3736}
.panel-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;opacity:.95}
.panel-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,55,54,0) 42%,rgba(12,55,54,.62) 100%);
}
.panel-badge{
  position:absolute;left:16px;bottom:14px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);color:var(--brand);
  border-radius:999px;padding:6px 14px;font-size:12.5px;font-weight:700;letter-spacing:.6px;
}
.panel-body{padding:22px 22px 24px}
.panel-body h2{font-size:17px;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.panel-body h2::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--accent)}
.toc{margin-top:14px;display:grid;gap:8px}
.toc li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--ink-2);line-height:1.6;
}
.toc li i{
  flex:0 0 20px;height:20px;border-radius:6px;background:var(--brand-soft);
  color:var(--brand);font-style:normal;font-size:12px;font-weight:700;
  display:grid;place-items:center;margin-top:2px;
}
.lead-form{margin-top:18px;display:grid;gap:10px}
.lead-form .field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lead-form input{
  width:100%;height:44px;border:1px solid var(--line-strong);border-radius:10px;
  padding:0 14px;font-size:14px;background:#fcfbf8;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.lead-form input:focus{outline:none;border-color:var(--brand-2);background:#fff;box-shadow:0 0 0 4px rgba(31,107,105,.12)}
.lead-form .btn{width:100%}
.form-note{font-size:12.5px;color:var(--muted);line-height:1.6}

/* ============ 卡片网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(14px,1.6vw,20px)}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;gap:10px;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfd9d7}
.card .ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:4px;
}
.card .ico svg{width:22px;height:22px}
.card h3{font-size:17px;letter-spacing:.4px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.card .tagline{
  margin-top:auto;display:inline-flex;align-self:flex-start;
  font-size:12.5px;font-weight:700;color:var(--brand-2);
  background:var(--brand-soft);border-radius:999px;padding:5px 12px;
}

/* 带图卡片 */
.card-media{overflow:hidden;padding:0;gap:0}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease}
.card-media:hover img{transform:scale(1.04)}
.card-media .media-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px}
.card-media .media-body h3{font-size:16.5px}
.card-media .media-body p{font-size:14px;color:var(--muted)}

/* ============ 数据条 ============ */
.statbar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.statbar .item{padding:22px 20px;border-right:1px solid var(--line);text-align:center}
.statbar .item:last-child{border-right:0}
.statbar b{display:block;font-size:26px;color:var(--brand);line-height:1.2;letter-spacing:.5px}
.statbar span{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* ============ 场景矩阵 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.scene{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand-2);
  border-radius:var(--radius);padding:22px 22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-left-color .2s ease;
}
.scene:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-left-color:var(--accent)}
.scene h3{font-size:16px;margin-bottom:8px;letter-spacing:.4px}
.scene p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;counter-reset:step}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 18px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:inline-grid;place-items:center;
  width:34px;height:34px;border-radius:10px;margin-bottom:12px;
  background:var(--brand);color:#fff;font-size:13.5px;font-weight:800;letter-spacing:.5px;
}
.step h3{font-size:15.5px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ 演示表格 ============ */
.demo-wrap{
  display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(20px,3vw,36px);align-items:center;
}
.table-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);overflow:hidden;
}
.table-card .table-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 20px;background:var(--brand);color:#fff;
}
.table-card .table-head strong{font-size:15px;letter-spacing:.6px}
.table-card .table-head span{font-size:12.5px;opacity:.82}
.algo-table{width:100%;border-collapse:collapse;font-size:14px}
.algo-table th,.algo-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.algo-table thead th{
  background:#f7f5f0;font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.8px;
}
.algo-table tbody tr:last-child td{border-bottom:0}
.algo-table tbody tr:hover{background:#faf9f5}
.algo-table td b{color:var(--brand);font-weight:700}
.demo-side{display:flex;flex-direction:column;gap:16px}
.demo-side img{border-radius:var(--radius);box-shadow:var(--shadow-md);aspect-ratio:16/10;object-fit:cover}
.demo-side .note{
  background:var(--accent-soft);border:1px solid #efd8a9;border-radius:var(--radius);
  padding:16px 18px;font-size:14px;color:#6a4d12;line-height:1.8;
}

/* ============ 证言 / 口碑 ============ */
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.quote:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.quote p{font-size:14.5px;color:var(--ink-2);line-height:1.85}
.quote .who{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{
  width:38px;height:38px;flex:0 0 38px;border-radius:50%;
  background:linear-gradient(140deg,var(--brand-2),var(--brand));
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;
}
.who b{display:block;font-size:14px}
.who span{display:block;font-size:12.5px;color:var(--muted)}

/* ============ 版本对比 ============ */
.compare{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.compare table{width:100%;border-collapse:collapse;font-size:14.5px}
.compare th,.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{background:#f7f5f0;font-size:14px;font-weight:800;color:var(--ink)}
.compare thead th:first-child{color:var(--muted);font-weight:700;font-size:13px;letter-spacing:.8px}
.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr:hover{background:#faf9f5}
.compare td:first-child{color:var(--ink-2);font-weight:600;width:26%}
.compare .yes{color:var(--brand-2);font-weight:700}
.compare .no{color:#a3acb3}

/* ============ 参数速览 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.spec{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:15px 18px;transition:border-color .2s,box-shadow .2s,transform .2s;
}
.spec:hover{border-color:#cfd9d7;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.spec dt{font-size:14px;color:var(--muted)}
.spec dd{margin:0;font-size:14.5px;font-weight:700;color:var(--ink)}

/* ============ 误区澄清 ============ */
.myth{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.myth:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.myth .wrong{
  display:flex;gap:10px;font-size:14.5px;font-weight:700;color:#9a4a2b;line-height:1.7;
}
.myth .wrong::before{
  content:"误";flex:0 0 24px;height:24px;border-radius:7px;
  background:#f6e3d8;color:#9a4a2b;font-size:12px;display:grid;place-items:center;margin-top:2px;
}
.myth .right{
  display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.8;margin-top:12px;
}
.myth .right::before{
  content:"正";flex:0 0 24px;height:24px;border-radius:7px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;display:grid;place-items:center;margin-top:2px;
}

/* ============ 分类入口墙 ============ */
.entry-wall{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.entry{
  position:relative;display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,107,105,.12),transparent 70%);
}
.entry:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfd9d7}
.entry h3{font-size:17.5px;letter-spacing:.4px}
.entry p{font-size:14px;color:var(--muted);line-height:1.8}
.entry .go{margin-top:6px;font-size:13.5px;font-weight:700;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px}
.entry .go svg{width:15px;height:15px;transition:transform .2s}
.entry:hover .go svg{transform:translateX(4px)}

/* ============ 资讯列表 ============ */
.news-layout{display:grid;grid-template-columns:1.5fr .9fr;gap:clamp(20px,3vw,34px);align-items:start}
.news-list{display:grid;gap:12px}
.news-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfd9d7}
.news-item h3{font-size:16px;line-height:1.6;margin-bottom:8px}
.news-item p{font-size:14px;color:var(--muted);line-height:1.8}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;font-size:12.5px;color:#8b959d}
.news-meta em{
  font-style:normal;background:var(--brand-soft);color:var(--brand-2);
  border-radius:999px;padding:3px 10px;font-weight:700;
}
.news-side{display:grid;gap:12px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:14px;color:var(--muted);letter-spacing:1.2px;margin-bottom:14px;font-weight:800}
.side-link{
  display:block;padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--ink-2);line-height:1.65;transition:color .2s;
}
.side-link:last-child{border-bottom:0;padding-bottom:0}
.side-link:hover{color:var(--brand-2)}
.empty-note{
  background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:26px;text-align:center;color:var(--muted);font-size:14.5px;
}

/* ============ 风险提示 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);
}
.notice .ico{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;
  background:var(--accent-soft);color:#8a6316;display:grid;place-items:center;
}
.notice .ico svg{width:21px;height:21px}
.notice h3{font-size:16px;margin-bottom:6px}
.notice p{font-size:14px;color:var(--muted);line-height:1.85}

/* ============ 下载引导 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(150deg,var(--brand-deep),#144c4b 62%,#0d3a39);
  color:#eef4f3;padding:clamp(30px,4vw,52px);
  display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(22px,3vw,40px);align-items:center;
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/用户界面.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:.5px;line-height:1.35}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.9;color:rgba(238,244,243,.82)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-panel{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius);padding:22px;backdrop-filter:blur(6px);
}
.cta-panel h3{font-size:15px;letter-spacing:.6px;margin-bottom:12px}
.cta-panel li{display:flex;gap:10px;font-size:14px;line-height:1.8;color:rgba(238,244,243,.88);margin-bottom:9px}
.cta-panel li:last-child{margin-bottom:0}
.cta-panel li::before{
  content:"";flex:0 0 7px;width:7px;height:7px;border-radius:50%;
  background:var(--accent);margin-top:9px;
}

/* ============ 页脚 ============ */
.site-footer{background:#0f2423;color:#c7d5d3;padding-top:clamp(44px,5vw,64px)}
.footer-grid{
  display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;
  gap:clamp(24px,3vw,44px);padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(140deg,#1f6b69,#14504f);box-shadow:none}
.footer-brand strong{font-size:16.5px;color:#fff;letter-spacing:.5px}
.footer-about{font-size:14px;line-height:1.9;color:rgba(199,213,211,.78);max-width:38ch}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:1px;margin-bottom:16px;font-weight:800}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(199,213,211,.8);transition:color .2s,transform .2s;display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-block:22px;font-size:13px;color:rgba(199,213,211,.62);
}
.footer-bottom a{color:rgba(199,213,211,.8)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .hero-panel{max-width:640px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .demo-wrap{grid-template-columns:1fr}
  .news-layout{grid-template-columns:1fr}
  .statbar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .statbar .item:nth-child(2){border-right:0}
  .statbar .item:nth-child(1),.statbar .item:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .entry-wall{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr}
  .head-search input{width:140px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .header-top{flex-wrap:wrap;gap:10px;padding-block:12px}
  .head-search{display:none}
  .hero{padding-top:30px}
  .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .stat{padding:12px}
  .stat b{font-size:18px}
  .grid-2,.grid-3,.grid-4,.scene-grid,.spec-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lead-form .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section-title{font-size:22px}
  .algo-table{font-size:13px}
  .algo-table th,.algo-table td{padding:10px 12px}
  .compare{overflow-x:auto}
  .compare table{min-width:560px}
}
@media (max-width:520px){
  .container{width:94vw}
  .brand-text strong{font-size:15.5px}
  .brand-text small{font-size:11px}
  .hero h1{font-size:26px}
  .hero-lead{font-size:15px}
  .hero-stats{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .statbar{grid-template-columns:1fr}
  .statbar .item{border-right:0;border-bottom:1px solid var(--line)}
  .statbar .item:last-child{border-bottom:0}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
  .head-search{display:none}
  .notice{flex-direction:column}
}

/* roulang page: article */
:root{
 --brand:#14504f;
 --brand-2:#1f6b69;
 --brand-deep:#0c3736;
 --brand-soft:#e6efee;
 --accent:#c9902e;
 --accent-soft:#fbf1dc;
 --ink:#172026;
 --ink-2:#2c3a43;
 --muted:#5f6b75;
 --bg:#f6f4ef;
 --bg-alt:#efece3;
 --card:#ffffff;
 --line:#e5e0d6;
 --line-strong:#d5cec0;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 1px 2px rgba(23,32,38,.05),0 6px 18px rgba(23,32,38,.05);
 --shadow-md:0 10px 28px rgba(23,32,38,.10);
 --shadow-lg:0 20px 48px rgba(23,32,38,.16);
 --sp:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
p{margin:0 0 16px}
.container{width:min(1180px,92vw);margin-inline:auto}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink);line-height:1.35}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.95);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(23,32,38,.09)}
.header-top{
 display:flex;align-items:center;justify-content:space-between;
 gap:18px;min-height:64px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{
 width:44px;height:44px;flex:0 0 44px;border-radius:13px;
 background:linear-gradient(140deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 8px 18px rgba(20,80,79,.28);
}
.brand-mark svg{width:23px;height:23px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17.5px;font-weight:800;letter-spacing:.4px;color:var(--ink)}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.6px;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.head-search{
 display:flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line-strong);
 border-radius:999px;padding:0 14px;height:42px;
 transition:border-color .2s,box-shadow .2s;
}
.head-search:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(31,107,105,.12)}
.head-search svg{width:17px;height:17px;color:var(--muted);flex:0 0 17px}
.head-search input{
 border:0;background:transparent;outline:none;width:190px;
 font-size:14px;color:var(--ink);
}
.head-search input::placeholder{color:#97a1a9}
.channel-bar{border-top:1px solid var(--line);background:#fff}
.channel-scroll{
 display:flex;gap:8px;align-items:center;
 overflow-x:auto;padding-block:9px;
 scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
 display:inline-flex;align-items:center;white-space:nowrap;
 padding:8px 16px;border-radius:999px;
 font-size:14px;font-weight:600;color:var(--ink-2);
 transition:background .2s,color .2s,transform .2s;
}
.channel:hover{background:var(--brand-soft);color:var(--brand)}
.channel.is-active{background:var(--brand);color:#fff;box-shadow:0 6px 14px rgba(20,80,79,.22)}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.4px;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,80,79,.28)}
.btn-accent{background:var(--accent);color:#3a2a08;box-shadow:0 8px 18px rgba(201,144,46,.3)}
.btn-accent:hover{background:#b9801f;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-2);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{
 outline:3px solid rgba(201,144,46,.55);outline-offset:2px;
}

/* ============ 通用板块 ============ */
.section{padding-block:var(--sp)}
.section--tint{background:var(--bg-alt)}
.section--white{background:#fff}
.section--dark{background:linear-gradient(150deg,var(--brand-deep),#123f3e 60%,#0a2c2b);color:#eaf1f0}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,44px)}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand-2);
 background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#d8e6e4}
.section-title{font-size:clamp(23px,2.7vw,31px);letter-spacing:.4px;color:var(--ink)}
.section--dark .section-title{color:#fff}
.section-title .hl{color:var(--brand-2)}
.section--dark .section-title .hl{color:var(--accent)}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.section--dark .section-desc{color:rgba(234,241,240,.78)}

/* ============ 文章头部 ============ */
.article-hero{
 position:relative;overflow:hidden;
 padding:clamp(30px,4.5vw,56px) 0 clamp(38px,5vw,60px);
 background:linear-gradient(150deg,var(--brand-deep),#123f3e 58%,#0a2c2b);
 color:#eaf1f0;
}
.article-hero::before{
 content:"";position:absolute;inset:0;
 background:url('/assets/images/用户界面.webp') center/cover no-repeat;
 opacity:.14;filter:saturate(.65);
}
.article-hero::after{
 content:"";position:absolute;left:-120px;bottom:-180px;width:420px;height:420px;border-radius:50%;
 background:radial-gradient(circle,rgba(201,144,46,.22),transparent 68%);
 pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.crumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(234,241,240,.68);margin-bottom:18px}
.crumb-nav a{color:rgba(234,241,240,.86);transition:color .2s}
.crumb-nav a:hover{color:var(--accent)}
.crumb-sep{color:rgba(234,241,240,.4)}
.art-hero-inner{max-width:880px}
.art-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.art-chip{
 display:inline-flex;align-items:center;gap:6px;
 font-size:12.5px;font-weight:700;letter-spacing:.6px;
 padding:5px 13px;border-radius:999px;
 background:rgba(255,255,255,.14);color:#f0f7f6;
 border:1px solid rgba(255,255,255,.18);
}
.art-chip--accent{background:rgba(201,144,46,.2);border-color:rgba(201,144,46,.45);color:#f6dca9}
.article-hero h1{
 font-size:clamp(25px,3.3vw,38px);
 line-height:1.34;letter-spacing:.5px;color:#fff;
}
.art-lead{margin-top:18px;font-size:15.5px;line-height:1.9;color:rgba(234,241,240,.8);max-width:70ch}
.art-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;font-size:13.5px;color:rgba(234,241,240,.7)}
.art-meta-item{display:inline-flex;align-items:center;gap:7px}
.art-meta-item svg{width:15px;height:15px;flex:0 0 15px;color:var(--accent)}

/* ============ 正文布局 ============ */
.article-wrap{padding-block:clamp(34px,4.5vw,60px)}
.article-layout{
 display:grid;grid-template-columns:minmax(0,1fr) 326px;
 gap:clamp(24px,3vw,44px);align-items:start;
}
.article-main{max-width:780px;min-width:0}
.article-card{
 background:var(--card);border:1px solid var(--line);
 border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
 padding:clamp(20px,3vw,40px);
}
.article-body{font-size:16px;line-height:1.9;color:var(--ink-2);word-break:break-word}
.article-body > *:first-child{margin-top:0}
.article-body h2{
 font-size:clamp(19px,2.2vw,24px);
 margin:34px 0 14px;padding-left:14px;
 border-left:4px solid var(--accent);line-height:1.45;
}
.article-body h3{font-size:clamp(17px,1.8vw,19px);margin:26px 0 10px;color:var(--brand-deep)}
.article-body h4{font-size:16px;margin:20px 0 8px}
.article-body p{margin:0 0 16px;color:var(--ink-2)}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px}
.article-body li{margin-bottom:8px}
.article-body strong{color:var(--brand-deep)}
.article-body a{color:var(--brand-2);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body img{border-radius:var(--radius);margin:22px 0;box-shadow:var(--shadow-sm)}
.article-body blockquote{
 margin:22px 0;padding:16px 20px;
 background:var(--accent-soft);border-left:4px solid var(--accent);
 border-radius:var(--radius-sm);color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;background:#fff}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--brand-soft);color:var(--brand-deep);font-weight:700}
.article-body tr:nth-child(even) td{background:#faf8f3}
.article-body code{background:var(--brand-soft);padding:2px 6px;border-radius:6px;font-size:14px}
.article-empty{
 text-align:center;padding:clamp(30px,5vw,60px) 10px;
 background:var(--bg-alt);border-radius:var(--radius);
 border:1px dashed var(--line-strong);
}
.article-empty h2{font-size:22px;margin-bottom:12px;border:0;padding:0}
.article-empty p{color:var(--muted)}
.article-empty .btn{margin-top:8px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:grid;gap:16px}
.side-card{
 background:var(--card);border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-sm);
 padding:22px;
}
.side-card h3{
 font-size:15.5px;letter-spacing:.5px;margin-bottom:14px;
 display:flex;align-items:center;gap:8px;color:var(--brand-deep);
}
.side-card h3 svg{width:17px;height:17px;color:var(--accent);flex:0 0 17px}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{
 display:flex;gap:10px;align-items:flex-start;
 font-size:14.2px;color:var(--ink-2);line-height:1.7;
 padding-block:9px;border-bottom:1px dashed var(--line);
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li:first-child{padding-top:0}
.side-dot{
 flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--accent);
}
.side-links{display:grid;gap:10px}
.side-link{
 display:flex;align-items:center;justify-content:space-between;gap:10px;
 padding:11px 14px;border-radius:var(--radius-sm);
 background:var(--brand-soft);color:var(--brand-deep);
 font-size:14px;font-weight:700;
 transition:background .2s,transform .2s,box-shadow .2s;
}
.side-link:hover{background:#d6e6e4;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.side-link svg{width:15px;height:15px;flex:0 0 15px}
.side-cta{
 background:linear-gradient(150deg,var(--brand),var(--brand-2));
 color:#fff;border:0;
}
.side-cta h3{color:#fff}
.side-cta h3 svg{color:#f6dca9}
.side-cta p{font-size:13.8px;line-height:1.8;color:rgba(255,255,255,.82);margin-bottom:16px}
.side-cta .btn{width:100%;background:var(--accent);color:#3a2a08}
.side-cta .btn:hover{background:#b9801f;color:#fff}

/* ============ 要点卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:clamp(16px,2vw,24px)}
.point-card{
 background:var(--card);border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-sm);
 padding:24px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-2)}
.point-icon{
 width:44px;height:44px;border-radius:12px;
 display:grid;place-items:center;margin-bottom:16px;
 background:var(--brand-soft);color:var(--brand);
}
.point-icon svg{width:22px;height:22px}
.point-card h3{font-size:17px;margin-bottom:10px;color:var(--brand-deep)}
.point-card p{font-size:14.6px;line-height:1.82;color:var(--muted);margin-bottom:14px}
.mini-tags{display:flex;flex-wrap:wrap;gap:8px}
.mini-tag{
 font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px;
 background:var(--accent-soft);color:#8a6113;border:1px solid rgba(201,144,46,.28);
}

/* ============ 示例表 ============ */
.demo-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(20px,3vw,36px);align-items:start}
.demo-table{
 width:100%;border-collapse:collapse;background:#fff;
 border-radius:var(--radius);overflow:hidden;
 box-shadow:var(--shadow-sm);border:1px solid var(--line);
 font-size:14.8px;
}
.demo-table th,.demo-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
.demo-table thead th{background:var(--brand);color:#fff;font-weight:700;letter-spacing:.4px}
.demo-table tbody tr:last-child td{border-bottom:0}
.demo-table tbody tr:hover td{background:var(--brand-soft)}
.demo-table td strong{color:var(--brand-deep)}
.demo-side{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:24px;
}
.demo-side h3{font-size:16.5px;margin-bottom:12px;color:var(--brand-deep)}
.demo-side p{font-size:14.4px;color:var(--muted);line-height:1.82}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.stat-cell{
 background:var(--bg-alt);border-radius:var(--radius-sm);
 padding:12px;text-align:center;
}
.stat-cell b{display:block;font-size:20px;color:var(--brand);line-height:1.3}
.stat-cell span{font-size:12.5px;color:var(--muted)}

/* ============ 核对清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.check-item{
 display:flex;gap:14px;align-items:flex-start;
 background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);padding:20px;
 box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.check-num{
 flex:0 0 34px;width:34px;height:34px;border-radius:10px;
 display:grid;place-items:center;
 background:var(--brand-deep);color:#fff;font-size:14px;font-weight:800;
}
.check-item h3{font-size:15.8px;margin-bottom:6px}
.check-item p{font-size:14.2px;color:var(--muted);line-height:1.8;margin:0}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
 background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-sm);
 overflow:hidden;transition:box-shadow .2s,border-color .2s;
}
.faq-item[open]{border-color:var(--brand-2);box-shadow:var(--shadow-md)}
.faq-item summary{
 list-style:none;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:17px 22px;font-size:15.6px;font-weight:700;color:var(--brand-deep);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:var(--accent);
 transition:transform .2s;
}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-answer{
 padding:0 22px 20px;font-size:14.8px;line-height:1.88;color:var(--muted);
 border-top:1px solid var(--line);padding-top:16px;
}

/* ============ 频道矩阵 ============ */
.channel-matrix{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.matrix-card{
 display:block;background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);padding:24px;
 box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-2)}
.matrix-card .m-kicker{font-size:12.5px;font-weight:700;letter-spacing:1.2px;color:var(--accent);margin-bottom:8px}
.matrix-card h3{font-size:17.5px;margin-bottom:10px;color:var(--brand-deep)}
.matrix-card p{font-size:14.4px;line-height:1.82;color:var(--muted);margin-bottom:14px}
.matrix-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-2)}
.matrix-more svg{width:15px;height:15px}

/* ============ 底部 CTA ============ */
.cta-band{
 display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(22px,3vw,42px);
 align-items:center;
}
.cta-band h2{font-size:clamp(23px,2.8vw,32px);color:#fff;line-height:1.35}
.cta-band .cta-desc{margin-top:14px;font-size:15.4px;line-height:1.88;color:rgba(234,241,240,.8)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-media{
 border-radius:var(--radius-lg);overflow:hidden;
 border:1px solid rgba(255,255,255,.16);
 box-shadow:var(--shadow-lg);
}
.cta-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0}

/* ============ 页脚 ============ */
.site-footer{
 background:var(--brand-deep);color:#cfe0de;
 padding-block:clamp(40px,5vw,64px) 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:clamp(22px,3vw,40px)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:11px;box-shadow:none}
.footer-about{font-size:14px;line-height:1.85;color:rgba(207,224,222,.75);max-width:40ch;margin:0}
.footer-col h4{font-size:15px;color:#fff;margin:0 0 14px;letter-spacing:.5px;font-weight:800}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:14px;color:rgba(207,224,222,.78);transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.14);
 margin-top:clamp(28px,4vw,44px);padding-top:18px;
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:13px;color:rgba(207,224,222,.62);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .article-layout{grid-template-columns:minmax(0,1fr)}
 .article-side{position:static;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
 .article-main{max-width:none}
 .demo-grid{grid-template-columns:minmax(0,1fr)}
 .cta-band{grid-template-columns:minmax(0,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
 .head-search{display:none}
 .brand-text small{display:none}
 .hero-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:768px){
 .article-hero h1{font-size:clamp(23px,5.2vw,30px)}
 .art-lead{font-size:15px}
 .section-title{font-size:clamp(21px,5vw,26px)}
 .article-card{padding:20px 18px}
 .article-body{font-size:15.4px;line-height:1.86}
 .article-body table,.demo-table{font-size:13.8px}
 .demo-table th,.demo-table td{padding:10px 11px}
 .stat-row{grid-template-columns:1fr 1fr}
 .faq-item summary{font-size:15px;padding:15px 17px}
 .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
 .header-actions .btn-sm{min-height:38px;padding:0 13px;font-size:13px}
 .brand-mark{width:38px;height:38px;flex-basis:38px;border-radius:11px}
 .brand-text strong{font-size:15px}
 .channel{padding:7px 13px;font-size:13.4px}
 .btn{min-height:44px}
 .article-side{grid-template-columns:minmax(0,1fr)}
 .footer-grid{grid-template-columns:1fr}
 .stat-row{grid-template-columns:1fr}
 .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
 --brand:#14504f;
 --brand-2:#1f6b69;
 --brand-deep:#0c3736;
 --brand-soft:#e6efee;
 --accent:#c9902e;
 --accent-soft:#fbf1dc;
 --ink:#172026;
 --ink-2:#2c3a43;
 --muted:#5f6b75;
 --bg:#f6f4ef;
 --bg-alt:#efece3;
 --card:#ffffff;
 --line:#e5e0d6;
 --line-strong:#d5cec0;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 1px 2px rgba(23,32,38,.05),0 6px 18px rgba(23,32,38,.05);
 --shadow-md:0 10px 28px rgba(23,32,38,.10);
 --shadow-lg:0 20px 48px rgba(23,32,38,.16);
 --sp:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:.4px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
:focus-visible{outline:3px solid rgba(31,107,105,.42);outline-offset:2px;border-radius:6px}
.container{width:min(1180px,92vw);margin-inline:auto}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.95);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(23,32,38,.09)}
.header-top{
 display:flex;align-items:center;justify-content:space-between;
 gap:18px;min-height:64px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{
 width:44px;height:44px;flex:0 0 44px;border-radius:13px;
 background:linear-gradient(140deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 8px 18px rgba(20,80,79,.28);
}
.brand-mark svg{width:23px;height:23px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17.5px;font-weight:800;letter-spacing:.4px;color:var(--ink)}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.6px;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.head-search{
 display:flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line-strong);
 border-radius:999px;padding:0 14px;height:42px;
 transition:border-color .2s,box-shadow .2s;
}
.head-search:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(31,107,105,.12)}
.head-search svg{width:17px;height:17px;color:var(--muted);flex:0 0 17px}
.head-search input{
 border:0;background:transparent;outline:none;width:190px;
 font-size:14px;color:var(--ink);
}
.head-search input::placeholder{color:#97a1a9}
.channel-bar{border-top:1px solid var(--line);background:#fff}
.channel-scroll{
 display:flex;gap:8px;overflow-x:auto;padding-block:8px;
 scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
 flex:0 0 auto;display:inline-flex;align-items:center;
 min-height:40px;padding:0 18px;border-radius:999px;
 font-size:14.5px;font-weight:700;color:var(--ink-2);
 border:1px solid transparent;
 transition:background .2s,color .2s,box-shadow .2s,transform .2s;
}
.channel:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.channel.is-active{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.22)}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.4px;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,80,79,.28)}
.btn-accent{background:var(--accent);color:#3a2a08;box-shadow:0 8px 18px rgba(201,144,46,.3)}
.btn-accent:hover{background:#b9801f;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-2);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ============ 通用板块 ============ */
.section{padding-block:var(--sp)}
.section--tint{background:var(--bg-alt)}
.section--white{background:#fff}
.section--dark{background:linear-gradient(150deg,var(--brand-deep),#123f3e 60%,#0a2c2b);color:#eaf1f0}
.section-head{max-width:780px;margin-bottom:clamp(26px,3.6vw,42px)}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand-2);
 background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#d8e6e4}
.section-title{font-size:clamp(23px,2.7vw,31px)}
.section-title .hl{color:var(--brand-2)}
.section--dark .section-title .hl{color:var(--accent)}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.section--dark .section-desc{color:rgba(234,241,240,.78)}

/* ============ 分类 Hero ============ */
.cat-hero{
 position:relative;overflow:hidden;
 background:linear-gradient(180deg,#efece3 0%,var(--bg) 82%);
 padding:clamp(26px,3.6vw,44px) 0 clamp(42px,5.4vw,70px);
}
.cat-hero::after{
 content:"";position:absolute;right:-150px;top:-170px;width:460px;height:460px;border-radius:50%;
 background:radial-gradient(circle,rgba(31,107,105,.16),transparent 68%);
 pointer-events:none;
}
.crumb{
 position:relative;z-index:2;
 display:flex;flex-wrap:wrap;align-items:center;gap:8px;
 font-size:13.5px;color:var(--muted);margin-bottom:18px;
}
.crumb a{color:var(--brand);font-weight:600}
.crumb a:hover{text-decoration:underline}
.crumb span{color:var(--line-strong)}
.hero-grid{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.08fr .92fr;
 gap:clamp(26px,3.6vw,52px);align-items:start;
}
.cat-hero h1{
 font-size:clamp(28px,3.5vw,40px);
 line-height:1.28;letter-spacing:.5px;
}
.hero-lead{margin-top:18px;font-size:15.8px;line-height:1.9;color:var(--ink-2);max-width:60ch}
.status-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.stat-pill{
 display:inline-flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line-strong);border-radius:999px;
 padding:8px 16px;font-size:13.5px;font-weight:600;color:var(--ink-2);
 box-shadow:var(--shadow-sm);
}
.stat-pill b{color:var(--brand);font-weight:800}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:0 0 7px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{margin-top:16px;font-size:13.5px;color:var(--muted)}

/* 图标矩阵 */
.icon-matrix{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:18px;box-shadow:var(--shadow-md);
 display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;
}
.mat-item{
 display:flex;gap:10px;align-items:flex-start;
 padding:12px;border-radius:var(--radius-sm);
 background:var(--bg);border:1px solid transparent;
 transition:transform .2s,box-shadow .2s,border-color .2s,background .2s;
}
.mat-item:hover{background:#fff;border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.mat-ico{
 width:34px;height:34px;flex:0 0 34px;border-radius:10px;
 background:var(--brand-soft);color:var(--brand);
 display:grid;place-items:center;
}
.mat-ico svg{width:18px;height:18px}
.mat-item strong{display:block;font-size:14px;letter-spacing:.2px}
.mat-item small{display:block;font-size:12.4px;color:var(--muted);line-height:1.55;margin-top:2px}
.matrix-foot{
 grid-column:1/-1;margin-top:2px;padding-top:12px;border-top:1px dashed var(--line-strong);
 font-size:12.6px;color:var(--muted);
}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:20px}
.f-card{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.f-card h3{font-size:17.5px;margin-bottom:10px}
.f-card p{font-size:14.8px;color:var(--muted);line-height:1.8}
.f-ico{
 width:42px;height:42px;border-radius:12px;margin-bottom:14px;
 background:var(--brand-soft);color:var(--brand);
 display:grid;place-items:center;
}
.f-ico svg{width:21px;height:21px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
 display:inline-flex;align-items:center;
 font-size:12.6px;font-weight:600;color:var(--brand);
 background:var(--brand-soft);border-radius:999px;padding:4px 12px;
}
.chip--accent{background:var(--accent-soft);color:#8a6116}

/* ============ 流程 ============ */
.step-flow{display:grid;gap:16px}
.step{
 display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.step-no{
 width:44px;height:44px;flex:0 0 44px;border-radius:13px;
 background:linear-gradient(140deg,var(--brand),var(--brand-2));color:#fff;
 display:grid;place-items:center;font-weight:800;font-size:16px;
 box-shadow:0 8px 16px rgba(20,80,79,.22);
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14.8px;color:var(--muted);line-height:1.8}
.step em{font-style:normal;color:var(--brand);font-weight:700}

/* ============ 参数速览 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.spec{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.spec:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.spec small{display:block;font-size:13px;color:var(--muted);letter-spacing:.4px}
.spec b{display:block;font-size:26px;font-weight:800;color:var(--brand);line-height:1.3;margin:6px 0 4px}
.spec p{font-size:13.6px;color:var(--muted);line-height:1.7}

/* ============ 场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:22px}
.scene-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
 display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.scene-body{padding:20px}
.scene-body h3{font-size:17px;margin-bottom:8px}
.scene-body p{font-size:14.6px;color:var(--muted);line-height:1.8}

/* ============ 误区 ============ */
.myth-list{display:grid;gap:14px}
.myth{
 display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;
 background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent);
 border-radius:var(--radius-sm);padding:18px 20px;
 box-shadow:var(--shadow-sm);
}
.myth-ico{
 width:30px;height:30px;flex:0 0 30px;border-radius:9px;
 background:var(--accent-soft);color:#8a6116;display:grid;place-items:center;
}
.myth-ico svg{width:16px;height:16px}
.myth strong{display:block;font-size:15.4px;margin-bottom:5px}
.myth p{font-size:14.4px;color:var(--muted);line-height:1.78}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:960px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
 padding:0 20px;box-shadow:var(--shadow-sm);
 transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:var(--brand-2);box-shadow:var(--shadow-md)}
.faq-item summary{
 list-style:none;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 min-height:56px;padding-block:14px;
 font-size:15.8px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:20px;font-weight:700;color:var(--brand-2);line-height:1;
 transition:transform .2s;
}
.faq-item[open] summary::after{content:"−"}
.faq-item p{font-size:14.8px;color:var(--muted);line-height:1.85;padding-bottom:20px}

/* ============ 内容列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.post-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.post-link{display:block;padding:22px;height:100%}
.post-card h3{
 font-size:16.4px;line-height:1.55;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
 margin-top:10px;font-size:14.2px;color:var(--muted);line-height:1.78;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;font-size:12.6px;color:var(--muted)}
.post-meta span{
 background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:3px 11px;
}
.empty-note{
 background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
 padding:28px;text-align:center;color:var(--muted);font-size:14.6px;
}
.list-more{display:flex;justify-content:center;margin-top:32px}

/* ============ CTA ============ */
.cta-band{
 display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,3.4vw,46px);
 align-items:center;
}
.cta-band h2{font-size:clamp(23px,2.6vw,30px);line-height:1.34}
.cta-band p{margin-top:14px;font-size:15.4px;color:rgba(234,241,240,.8);line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-panel{
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
 border-radius:var(--radius-lg);padding:24px;
}
.cta-panel h3{font-size:16px;color:#fff;margin-bottom:14px}
.cta-panel li{
 display:flex;gap:10px;align-items:flex-start;
 font-size:14.2px;color:rgba(234,241,240,.86);line-height:1.7;padding-block:7px;
}
.cta-panel li::before{
 content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
 flex:0 0 6px;margin-top:10px;
}
.section--dark .btn-ghost{color:#eaf1f0;border-color:rgba(255,255,255,.34)}
.section--dark .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6)}

/* ============ 页脚 ============ */
.site-footer{
 background:#0f2b2a;color:rgba(234,241,240,.8);
 padding-top:clamp(44px,5vw,64px);
 border-top:1px solid rgba(255,255,255,.12);
}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
 gap:clamp(24px,3vw,42px);
 padding-bottom:38px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-brand .brand-mark{
 width:40px;height:40px;flex:0 0 40px;border-radius:12px;
 background:linear-gradient(140deg,var(--brand-2),#2f8b88);
 box-shadow:none;
}
.footer-brand .brand-mark svg{width:21px;height:21px}
.footer-brand strong{font-size:16.5px;color:#fff;letter-spacing:.4px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(234,241,240,.66);max-width:38ch}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:14px;letter-spacing:.6px}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:14px;color:rgba(234,241,240,.72);transition:color .2s,transform .2s;display:inline-block}
.footer-col a:hover{color:var(--accent);transform:translateX(3px)}
.footer-bottom{
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
 border-top:1px solid rgba(255,255,255,.12);
 padding-block:20px;font-size:13px;color:rgba(234,241,240,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:30px}
 .icon-matrix{grid-template-columns:repeat(3,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .cta-band{grid-template-columns:1fr}
}
@media (max-width:768px){
 .header-top{flex-wrap:wrap;justify-content:flex-start;gap:12px}
 .header-actions{width:100%;justify-content:space-between}
 .head-search{flex:1 1 auto;min-width:0}
 .head-search input{width:100%}
 .brand-text small{display:none}
 .icon-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
 .section-head{margin-bottom:26px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-about{max-width:none}
 .cta-panel{padding:20px}
}
@media (max-width:520px){
 .container{width:94vw}
 .header-actions{gap:10px}
 .head-search{height:40px;padding:0 12px}
 .head-search svg{width:16px;height:16px;flex:0 0 16px}
 .btn{padding:0 16px;font-size:14.5px}
 .btn-sm{min-height:38px;padding:0 14px;font-size:13.5px}
 .cat-hero h1{font-size:26px}
 .hero-lead{font-size:15px}
 .hero-cta{flex-direction:column;align-items:stretch}
 .hero-cta .btn{width:100%}
 .icon-matrix{grid-template-columns:1fr;padding:14px}
 .step{grid-template-columns:1fr;gap:12px}
 .spec b{font-size:23px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .post-link{padding:18px}
}

/* roulang page: category2 */
:root{
 --brand:#14504f;
 --brand-2:#1f6b69;
 --brand-deep:#0c3736;
 --brand-soft:#e6efee;
 --accent:#c9902e;
 --accent-soft:#fbf1dc;
 --ink:#172026;
 --ink-2:#2c3a43;
 --muted:#5f6b75;
 --bg:#f6f4ef;
 --bg-alt:#efece3;
 --card:#ffffff;
 --line:#e5e0d6;
 --line-strong:#d5cec0;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 1px 2px rgba(23,32,38,.05),0 6px 18px rgba(23,32,38,.05);
 --shadow-md:0 10px 28px rgba(23,32,38,.10);
 --shadow-lg:0 20px 48px rgba(23,32,38,.16);
 --sp:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 background:var(--bg);color:var(--ink);font-size:16px;line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:.4px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(201,144,46,.55);outline-offset:3px;border-radius:8px}
.container{width:min(1180px,92vw);margin-inline:auto}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.96);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(23,32,38,.09)}
.header-top{
 display:flex;align-items:center;justify-content:space-between;
 gap:18px;min-height:64px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{
 width:44px;height:44px;flex:0 0 44px;border-radius:13px;
 background:linear-gradient(140deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 8px 18px rgba(20,80,79,.28);
}
.brand-mark svg{width:23px;height:23px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17.5px;font-weight:800;letter-spacing:.4px;color:var(--ink)}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.6px;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.head-search{
 display:flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line-strong);
 border-radius:999px;padding:0 14px;height:42px;
 transition:border-color .2s,box-shadow .2s;
}
.head-search:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(31,107,105,.12)}
.head-search svg{width:17px;height:17px;color:var(--muted);flex:0 0 17px}
.head-search input{border:0;background:transparent;outline:none;width:190px;font-size:14px;color:var(--ink)}
.head-search input::placeholder{color:#97a1a9}
.channel-bar{background:#fff;border-top:1px solid var(--line)}
.channel-scroll{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
 display:inline-flex;align-items:center;min-height:46px;padding:0 16px;
 font-size:14.5px;font-weight:700;color:var(--muted);white-space:nowrap;
 border-bottom:2px solid transparent;
 transition:color .2s,border-color .2s,background .2s;
}
.channel:hover{color:var(--brand-2);background:rgba(230,239,238,.5)}
.channel.is-active{color:var(--brand);border-bottom-color:var(--accent)}

/* ============ 按钮 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.4px;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,80,79,.28)}
.btn-accent{background:var(--accent);color:#3a2a08;box-shadow:0 8px 18px rgba(201,144,46,.3)}
.btn-accent:hover{background:#b9801f;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-2);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ============ 通用板块 ============ */
.section{padding-block:var(--sp)}
.section--tint{background:var(--bg-alt)}
.section--white{background:#fff}
.section--dark{background:linear-gradient(150deg,var(--brand-deep),#123f3e 60%,#0a2c2b);color:#eaf1f0}
.section-head{max-width:780px;margin-bottom:clamp(28px,4vw,44px)}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand-2);
 background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#d8e6e4}
.section-title{font-size:clamp(23px,2.7vw,31px)}
.section-title .hl{color:var(--brand-2)}
.section--dark .section-title .hl{color:var(--accent)}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.section--dark .section-desc{color:rgba(234,241,240,.78)}

/* ============ Hero ============ */
.hero{
 position:relative;overflow:hidden;
 padding:clamp(36px,5vw,60px) 0 clamp(48px,6vw,80px);
 background:linear-gradient(180deg,#efece3 0%,var(--bg) 82%);
}
.hero::after{
 content:"";position:absolute;right:-160px;top:-180px;width:480px;height:480px;border-radius:50%;
 background:radial-gradient(circle,rgba(31,107,105,.16),transparent 68%);
 pointer-events:none;
}
.hero-grid{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.06fr .94fr;
 gap:clamp(28px,4vw,56px);align-items:start;
}
.hero h1{font-size:clamp(30px,3.9vw,43px);line-height:1.24;margin-top:6px}
.hero-sub{margin-top:14px;font-size:17px;font-weight:700;color:var(--brand-2);letter-spacing:.4px}
.hero-lead{margin-top:16px;font-size:15.8px;line-height:1.9;color:var(--ink-2);max-width:60ch}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
 display:inline-flex;align-items:center;gap:6px;
 font-size:13.5px;font-weight:600;color:var(--brand);
 background:#fff;border:1px solid var(--line-strong);
 border-radius:999px;padding:7px 15px;
 transition:border-color .2s,box-shadow .2s,transform .2s;
}
.tag:hover{border-color:var(--brand-2);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:30px;max-width:540px}
.hero-stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;box-shadow:var(--shadow-sm)}
.hero-stat strong{display:block;font-size:21px;color:var(--brand);line-height:1.2}
.hero-stat span{font-size:12.8px;color:var(--muted)}
.hero-panel{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-lg);overflow:hidden;
}
.panel-cover{position:relative}
.panel-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.panel-body{padding:22px 24px 26px}
.panel-badge{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:800;letter-spacing:1px;color:#5a420f;
 background:var(--accent-soft);border-radius:999px;padding:5px 13px;
}
.panel-body h2{font-size:18.5px;margin-top:12px;line-height:1.42}
.panel-list{margin-top:16px;display:grid;gap:2px}
.panel-list li{
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:10px 0;border-bottom:1px dashed var(--line);
 font-size:14.5px;color:var(--ink-2);
}
.panel-list li:last-child{border-bottom:0}
.panel-list strong{color:var(--brand-2);font-size:15px}
.panel-body .btn{margin-top:18px;width:100%}

/* ============ 卡片 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:24px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-ico{
 width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);margin-bottom:16px;
}
.card-ico svg{width:22px;height:22px}
.card h3{font-size:17.5px;margin-bottom:10px}
.card p{font-size:14.8px;color:var(--muted);line-height:1.82}
.card .tag{margin-top:16px;font-size:12.8px;padding:5px 12px}
.card-num{font-size:13px;font-weight:800;letter-spacing:1.6px;color:var(--accent);margin-bottom:10px;display:block}

/* ============ 倍数表 ============ */
.table-wrap{
 overflow-x:auto;background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-sm);
}
table.algo{width:100%;border-collapse:collapse;min-width:680px;font-size:15px}
table.algo caption{text-align:left;padding:18px 20px 4px;font-size:14px;color:var(--muted)}
table.algo thead th{
 background:var(--brand);color:#fff;font-size:13.6px;font-weight:700;
 padding:14px 18px;text-align:left;letter-spacing:.6px;white-space:nowrap;
}
table.algo td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
table.algo tbody tr:nth-child(even){background:#fbfaf6}
table.algo tbody tr:hover{background:var(--brand-soft)}
table.algo tbody tr:last-child td{border-bottom:0}
table.algo .num{font-weight:800;color:var(--brand-2);white-space:nowrap}
table.algo .name{font-weight:700;color:var(--ink);white-space:nowrap}

/* ============ 步骤 ============ */
.steps{display:grid;gap:16px}
.step{
 display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:start;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 22px;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.step .n{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand);color:#fff;font-weight:800;font-size:15px;
 box-shadow:0 6px 14px rgba(20,80,79,.22);
}
.step h3{font-size:16.5px;margin-bottom:6px}
.step p{font-size:14.6px;color:var(--muted);line-height:1.8}

/* ============ 数据条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:26px}
.stat{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 18px;text-align:center;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat strong{display:block;font-size:27px;color:var(--brand);line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:13.4px;color:var(--muted)}

/* ============ 误区列表 ============ */
.myth-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:6px 24px}
.myth-list li{
 display:grid;grid-template-columns:26px 1fr;gap:14px;align-items:start;
 padding:18px 0;border-bottom:1px dashed var(--line-strong);
}
.myth-list li:last-child{border-bottom:0}
.myth-list .mark{
 width:24px;height:24px;border-radius:50%;display:grid;place-items:center;
 background:var(--accent-soft);color:#8a6318;font-weight:800;font-size:12.5px;margin-top:3px;
}
.myth-list h4{font-size:15.6px;margin-bottom:6px}
.myth-list p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ 频道入口 ============ */
.channel-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.channel-card{
 display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--brand-2)}
.channel-card .kicker{font-size:12.5px;font-weight:800;letter-spacing:1.4px;color:var(--accent)}
.channel-card h3{font-size:17.5px;margin-top:8px}
.channel-card p{font-size:14.4px;color:var(--muted);margin-top:8px;line-height:1.78}
.channel-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:700;color:var(--brand-2)}

/* ============ 内容列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{
 display:flex;flex-direction:column;gap:10px;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.post-card h3{font-size:16.4px;line-height:1.5}
.post-card p{font-size:14.2px;color:var(--muted);line-height:1.75}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);font-size:12.8px;color:var(--muted)}
.post-meta span{
 background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:3px 11px;font-weight:700;
}
.empty-note{
 background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
 padding:34px 24px;text-align:center;color:var(--muted);font-size:15px;
}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px;max-width:900px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:4px 22px;box-shadow:var(--shadow-sm);
 transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:var(--brand-2);box-shadow:var(--shadow-md)}
.faq-item summary{
 cursor:pointer;font-weight:700;font-size:15.8px;padding:16px 0;
 display:flex;align-items:center;justify-content:space-between;gap:14px;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;color:var(--brand-2);line-height:1;font-weight:800}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 0 18px;font-size:14.8px;color:var(--muted);line-height:1.85}

/* ============ CTA ============ */
.cta-band{
 background:linear-gradient(150deg,var(--brand-deep),#123f3e 65%,#0a2c2b);
 color:#eaf1f0;border-radius:var(--radius-lg);
 padding:clamp(28px,4vw,50px);
 display:grid;grid-template-columns:1.5fr auto;gap:28px;align-items:center;
 box-shadow:var(--shadow-lg);
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);color:#fff}
.cta-band p{margin-top:12px;font-size:15.2px;color:rgba(234,241,240,.8);line-height:1.85;max-width:62ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.42)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding-top:clamp(40px,5vw,64px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{font-size:16.5px;font-weight:800;color:var(--ink)}
.footer-about{font-size:14.2px;color:var(--muted);line-height:1.85;max-width:40ch}
.footer-col h4{font-size:14.5px;letter-spacing:.8px;color:var(--ink);margin-bottom:14px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:14.2px;color:var(--muted);transition:color .2s}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
 border-top:1px solid var(--line);padding:20px 0 28px;
 font-size:13.2px;color:var(--muted);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr}
 .hero-panel{max-width:640px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3,.channel-cards,.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr}
 .cta-band{grid-template-columns:1fr}
 .head-search input{width:150px}
}
@media (max-width:768px){
 .header-top{flex-wrap:wrap;gap:12px}
 .head-search{display:none}
 .brand-text strong{font-size:16px}
 .brand-text small{display:none}
 .hero h1{font-size:clamp(26px,7vw,34px)}
 .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
 .grid-2,.grid-3,.grid-4,.channel-cards,.post-grid{grid-template-columns:1fr}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .myth-list{padding:6px 18px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .section{padding-block:clamp(44px,8vw,64px)}
}
@media (max-width:520px){
 .hero-stats{grid-template-columns:1fr}
 .step{grid-template-columns:1fr;gap:12px}
 .cta-actions .btn{width:100%}
 .footer-bottom{flex-direction:column}
 .card,.channel-card,.post-card{padding:20px}
}

/* roulang page: category3 */
:root{
 --brand:#14504f;
 --brand-2:#1f6b69;
 --brand-deep:#0c3736;
 --brand-soft:#e6efee;
 --accent:#c9902e;
 --accent-soft:#fbf1dc;
 --ink:#172026;
 --ink-2:#2c3a43;
 --muted:#5f6b75;
 --bg:#f6f4ef;
 --bg-alt:#efece3;
 --card:#ffffff;
 --line:#e5e0d6;
 --line-strong:#d5cec0;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 1px 2px rgba(23,32,38,.05),0 6px 18px rgba(23,32,38,.05);
 --shadow-md:0 10px 28px rgba(23,32,38,.10);
 --shadow-lg:0 20px 48px rgba(23,32,38,.16);
 --sp:clamp(56px,7vw,96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800}
.container{width:min(1180px,92vw);margin-inline:auto}
:focus-visible{outline:3px solid rgba(31,107,105,.45);outline-offset:3px;border-radius:6px}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:80;
 background:rgba(255,255,255,.96);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(23,32,38,.09)}
.header-top{
 display:flex;align-items:center;justify-content:space-between;
 gap:18px;min-height:64px;padding-block:10px;
}
.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.brand-mark{
 width:44px;height:44px;flex:0 0 44px;border-radius:13px;
 background:linear-gradient(140deg,var(--brand),var(--brand-2));
 display:grid;place-items:center;color:#fff;
 box-shadow:0 8px 18px rgba(20,80,79,.28);
}
.brand-mark svg{width:23px;height:23px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17.5px;font-weight:800;letter-spacing:.4px;color:var(--ink)}
.brand-text small{font-size:12px;color:var(--muted);letter-spacing:.6px;margin-top:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.head-search{
 display:flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line-strong);
 border-radius:999px;padding:0 14px;height:42px;
 transition:border-color .2s,box-shadow .2s;
}
.head-search:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(31,107,105,.12)}
.head-search svg{width:17px;height:17px;color:var(--muted);flex:0 0 17px}
.head-search input{
 border:0;background:transparent;outline:none;width:190px;
 font-size:14px;color:var(--ink);
}
.head-search input::placeholder{color:#97a1a9}
.channel-bar{border-top:1px solid var(--line);background:#fff}
.channel-scroll{
 display:flex;gap:8px;align-items:center;
 overflow-x:auto;padding-block:9px;
 scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel{
 flex:0 0 auto;display:inline-flex;align-items:center;
 min-height:38px;padding:0 18px;border-radius:999px;
 font-size:14.5px;font-weight:600;color:var(--muted);
 border:1px solid transparent;
 transition:background .2s,color .2s,box-shadow .2s,border-color .2s;
}
.channel:hover{color:var(--brand);background:var(--brand-soft)}
.channel.is-active{
 background:var(--brand);color:#fff;
 box-shadow:0 6px 16px rgba(20,80,79,.26);
}

/* ============ 按钮与标签 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:46px;padding:0 24px;border-radius:10px;
 font-size:15px;font-weight:700;letter-spacing:.4px;
 border:1px solid transparent;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(20,80,79,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,80,79,.28)}
.btn-accent{background:var(--accent);color:#3a2a08;box-shadow:0 8px 18px rgba(201,144,46,.3)}
.btn-accent:hover{background:#b9801f;color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-2);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.tag{
 display:inline-flex;align-items:center;gap:6px;
 font-size:13.5px;font-weight:600;color:var(--brand);
 background:#fff;border:1px solid var(--line-strong);
 border-radius:999px;padding:7px 15px;
 transition:border-color .2s,box-shadow .2s,transform .2s;
}
.tag:hover{border-color:var(--brand-2);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.pill{
 display:inline-flex;align-items:center;
 font-size:12.5px;font-weight:700;letter-spacing:.4px;
 color:var(--brand);background:var(--brand-soft);
 border-radius:999px;padding:4px 12px;
}
.pill--accent{color:#7a5410;background:var(--accent-soft)}

/* ============ 通用板块 ============ */
.section{padding-block:var(--sp)}
.section--tint{background:var(--bg-alt)}
.section--white{background:#fff}
.section--dark{background:linear-gradient(150deg,var(--brand-deep),#123f3e 60%,#0a2c2b);color:#eaf1f0}
.section-head{max-width:780px;margin-bottom:clamp(28px,4vw,44px)}
.section-head.center{margin-inline:auto;text-align:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--brand-2);
 background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.section--dark .eyebrow{background:rgba(255,255,255,.12);color:#d8e6e4}
.section-title{font-size:clamp(23px,2.7vw,31px);letter-spacing:.4px}
.section-title .hl{color:var(--brand-2)}
.section--dark .section-title .hl{color:var(--accent)}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.section--dark .section-desc{color:rgba(234,241,240,.78)}

/* ============ Hero ============ */
.hero{
 position:relative;overflow:hidden;
 padding:clamp(34px,4.5vw,58px) 0 var(--sp);
 background:linear-gradient(180deg,#efece3 0%,var(--bg) 78%);
}
.hero::after{
 content:"";position:absolute;right:-150px;top:-170px;width:470px;height:470px;border-radius:50%;
 background:radial-gradient(circle,rgba(31,107,105,.16),transparent 68%);
 pointer-events:none;
}
.hero-grid{
 position:relative;z-index:2;
 display:grid;grid-template-columns:1.08fr .92fr;
 gap:clamp(26px,4vw,56px);align-items:center;
}
.crumb{
 display:flex;flex-wrap:wrap;align-items:center;gap:8px;
 font-size:13px;color:var(--muted);margin-bottom:16px;
}
.crumb a{color:var(--brand-2);font-weight:600}
.crumb a:hover{text-decoration:underline}
.crumb span{color:var(--line-strong)}
.hero h1{
 font-size:clamp(28px,3.7vw,42px);
 line-height:1.26;letter-spacing:.5px;margin-top:4px;
}
.hero-lead{
 margin-top:18px;font-size:16px;line-height:1.9;color:var(--ink-2);max-width:58ch;
}
.hero-points{list-style:none;margin-top:22px;display:grid;gap:10px;max-width:56ch}
.hero-points li{
 position:relative;padding-left:28px;font-size:15px;color:var(--ink-2);line-height:1.7;
}
.hero-points li::before{
 content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:50%;
 background:var(--brand-soft);
 box-shadow:inset 0 0 0 1px rgba(20,80,79,.22);
}
.hero-points li::after{
 content:"";position:absolute;left:5px;top:11px;width:6px;height:6px;border-radius:50%;
 background:var(--brand-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.trust-bar{
 display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
 margin-top:22px;font-size:13px;color:var(--muted);
}
.trust-bar b{color:var(--ink-2);font-weight:800}
.trust-bar i{width:1px;height:12px;background:var(--line-strong);display:inline-block}
.hero-stats{
 display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
 gap:12px;margin-top:26px;max-width:520px;
}
.stat{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
 padding:14px 10px;text-align:center;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.stat strong{display:block;font-size:23px;font-weight:800;color:var(--brand);line-height:1.2}
.stat span{font-size:12.5px;color:var(--muted);letter-spacing:.3px}
.hero-figure{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-lg);overflow:hidden;
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.hero-figure .fig-body{padding:18px 20px 20px}
.hero-figure .fig-body h3{font-size:16px;color:var(--ink)}
.hero-figure .fig-body p{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.7}
.fig-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ============ 网格与卡片 ============ */
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
 background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:22px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.78}
.icon-box{
 width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);margin-bottom:14px;
 transition:background .2s,color .2s;
}
.icon-box svg{width:22px;height:22px}
.card:hover .icon-box{background:var(--brand);color:#fff}
.card--accent .icon-box{background:var(--accent-soft);color:#8a6216}
.card-foot{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ============ 表格 ============ */
.table-wrap{
 overflow-x:auto;-webkit-overflow-scrolling:touch;
 border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);background:#fff;
}
table.compare{width:100%;min-width:780px;border-collapse:collapse;font-size:14.5px}
table.compare th{
 background:var(--brand);color:#fff;text-align:left;
 padding:15px 18px;font-weight:700;white-space:nowrap;font-size:14px;
}
table.compare td{padding:15px 18px;border-top:1px solid var(--line);vertical-align:top;color:var(--ink-2)}
table.compare tbody tr{transition:background .2s}
table.compare tbody tr:hover{background:var(--brand-soft)}
table.compare td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.hint{margin-top:14px;font-size:13.5px;color:var(--muted)}

/* ============ 示例卡 ============ */
.formula{
 display:inline-flex;flex-wrap:wrap;align-items:center;gap:6px;
 background:var(--brand-soft);border-radius:8px;padding:6px 12px;
 font-size:13.5px;font-weight:700;color:var(--brand);margin-top:12px;
}
.example-result{
 margin-top:14px;padding-top:14px;border-top:1px dashed var(--line-strong);
 font-size:14.5px;color:var(--ink-2);
}
.example-result b{color:var(--accent);font-size:17px}

/* ============ 步骤 ============ */
.steps{display:grid;gap:16px}
.step{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 22px 20px 78px;box-shadow:var(--shadow-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.step-num{
 position:absolute;left:20px;top:20px;width:42px;height:42px;border-radius:12px;
 background:linear-gradient(140deg,var(--brand),var(--brand-2));color:#fff;
 display:grid;place-items:center;font-weight:800;font-size:15px;
 box-shadow:0 6px 14px rgba(20,80,79,.24);
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted)}

/* ============ 误区对照 ============ */
.myth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.myth{
 border-radius:var(--radius);padding:20px 22px;border:1px solid var(--line);
 background:#fff;box-shadow:var(--shadow-sm);
}
.myth--wrong{background:#fdf6f4;border-color:#eddcd6}
.myth--right{background:#f2f8f6;border-color:#d6e7e2}
.myth-label{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:800;letter-spacing:1px;margin-bottom:10px}
.myth--wrong .myth-label{color:#a4482f}
.myth--right .myth-label{color:var(--brand)}
.myth p{font-size:14.5px;color:var(--ink-2);line-height:1.78}

/* ============ FAQ ============ */
.faq{max-width:900px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);margin-bottom:12px;overflow:hidden;
 transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md)}
.faq-item summary{
 cursor:pointer;list-style:none;padding:18px 56px 18px 22px;position:relative;
 font-size:16px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
 width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
 background:var(--brand-soft);color:var(--brand);font-size:17px;font-weight:700;line-height:1;
 transition:background .2s,color .2s,transform .2s;
}
.faq-item[open] summary::after{content:"–";background:var(--brand);color:#fff}
.faq-body{padding:0 22px 20px;font-size:14.8px;color:var(--muted);line-height:1.85}

/* ============ CMS 列表 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.post-card{
 display:flex;flex-direction:column;gap:10px;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;box-shadow:var(--shadow-sm);min-height:100%;
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.post-card h3{font-size:16.5px;line-height:1.5}
.post-card p{font-size:14px;color:var(--muted);line-height:1.75}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;font-size:12.5px;color:var(--muted)}
.post-empty{
 background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
 padding:34px 22px;text-align:center;color:var(--muted);font-size:14.5px;
}

/* ============ CTA ============ */
.cta-band{
 background:linear-gradient(140deg,var(--brand),var(--brand-deep));
 color:#fff;border-radius:var(--radius-lg);
 padding:clamp(28px,4vw,48px);
 display:flex;justify-content:space-between;align-items:center;
 gap:26px;flex-wrap:wrap;box-shadow:var(--shadow-lg);
}
.cta-band h2{font-size:clamp(21px,2.5vw,28px);letter-spacing:.4px}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.82);max-width:56ch;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-primary{background:#fff;color:var(--brand);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.cta-band .btn-primary:hover{background:var(--accent-soft);color:var(--brand-deep)}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:#e6efee}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
 padding-block:clamp(40px,5vw,62px);
}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:800;color:#fff}
.footer-brand .brand-mark{box-shadow:none;background:rgba(255,255,255,.12)}
.footer-about{margin-top:14px;font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;max-width:40ch}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:800;letter-spacing:.4px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s,padding-left .2s}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.14);
 padding-block:20px;display:flex;justify-content:space-between;
 align-items:center;gap:12px;flex-wrap:wrap;
 font-size:13px;color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr}
 .hero-figure{order:-1;max-width:620px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
 .head-search input{width:150px}
}
@media (max-width:768px){
 .header-top{flex-wrap:wrap;gap:12px}
 .head-search{display:none}
 .brand-text small{display:none}
 .hero{padding-top:26px}
 .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
 .myth-grid{grid-template-columns:1fr}
 .post-grid{grid-template-columns:1fr}
 .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
 .stat strong{font-size:19px}
 .stat span{font-size:11.5px}
 .step{padding:18px 18px 18px 18px}
 .step-num{position:static;margin-bottom:12px}
 .cta-band{flex-direction:column;align-items:flex-start}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .channel-scroll{padding-block:8px}
}
@media (max-width:520px){
 .hero h1{font-size:26px}
 .btn{width:100%}
 .hero-actions .btn,.cta-actions .btn{width:100%}
 .hero-actions,.cta-actions{flex-direction:column;align-items:stretch}
 .trust-bar{gap:8px}
 .trust-bar i{display:none}
 .section-title{font-size:21px}
 .card{padding:18px}
 .brand-text strong{font-size:15.5px}
}