/* ============================================================
   网站建设服务官网 · 现代科技感 · 深色渐变
   ============================================================ */

:root{
  /* 深色科技主题 */
  --bg-0:      #0a0e1a;
  --bg-1:      #0f1526;
  --bg-2:      #141c33;
  --bg-3:      #1a2440;
  --card:      #151f38;

  --ink:       #eef2fb;
  --ink-2:     #b7c1d9;
  --ink-3:     #7f8bab;

  --line:      #22304f;
  --line-2:    #2e3f66;

  --brand:     #3b82f6;   /* 主蓝 */
  --brand-2:   #60a5fa;
  --accent:    #6366f1;   /* 靛紫 */
  --cyan:      #22d3ee;   /* 青 */
  --teal:      #2dd4bf;
  --grad:      linear-gradient(135deg,#3b82f6 0%,#6366f1 50%,#8b5cf6 100%);
  --grad-soft: linear-gradient(135deg,rgba(59,130,246,.22),rgba(99,102,241,.16));

  --font-sans: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI","Noto Sans SC",sans-serif;
  --font-mono: "SF Mono","JetBrains Mono","Fira Code",ui-monospace,Consolas,monospace;

  --w: 1180px;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
  --shadow-s: 0 2px 10px rgba(0,0,0,.25);
}

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

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(1200px 600px at 12% -8%, rgba(59,130,246,.16), transparent 55%),
    radial-gradient(1000px 560px at 92% 4%, rgba(99,102,241,.14), transparent 50%),
    radial-gradient(900px 700px at 50% 110%, rgba(34,211,238,.08), transparent 55%);
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
::selection{ background:rgba(59,130,246,.35); color:#fff; }

/* 阅读进度 */
.progress{
  position:fixed; top:0; left:0; height:2px; width:0; z-index:300;
  background:var(--grad); transition:width .12s linear;
}

/* ---------- 页头 ---------- */
.site-head{
  position:sticky; top:0; z-index:200;
  background:rgba(10,14,26,.72);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid var(--line);
}
.head-inner{
  max-width:var(--w); margin:0 auto; padding:0 28px;
  height:70px; display:flex; align-items:center; gap:30px;
}
.brand{ display:flex; align-items:center; gap:12px; flex:0 0 auto; }
.brand-logo{
  width:34px; height:34px; border-radius:9px; flex:0 0 auto;
  background:var(--grad); display:grid; place-items:center;
  box-shadow:0 4px 14px rgba(59,130,246,.4);
}
.brand-logo svg{ width:19px; height:19px; }
.brand-name{ font-size:17.5px; font-weight:700; letter-spacing:.04em; }
.brand-sub{ font-size:11px; letter-spacing:.14em; color:var(--ink-3); }

.nav{ margin-left:auto; display:flex; align-items:center; gap:2px; }
.nav a{
  font-size:14px; color:var(--ink-2); padding:8px 13px; border-radius:8px;
  position:relative; white-space:nowrap; transition:color .18s, background .18s;
}
.nav a:hover{ color:#fff; background:rgba(255,255,255,.06); }
.nav a.active{ color:#fff; }
.nav a.active::after{
  content:""; position:absolute; left:13px; right:13px; bottom:4px;
  height:2px; border-radius:2px; background:var(--grad);
}
.nav-cta{
  margin-left:6px; background:var(--grad); color:#fff !important;
  padding:9px 20px !important; font-weight:600; border-radius:9px;
  box-shadow:0 4px 16px rgba(59,130,246,.35);
}
.nav-cta:hover{ transform:translateY(-1px); }
.nav-cta::after{ display:none !important; }
.nav-toggle{
  display:none; margin-left:auto; background:rgba(255,255,255,.06);
  border:1px solid var(--line-2); border-radius:8px; color:var(--ink);
  font-size:13px; padding:7px 14px; cursor:pointer;
}

/* ---------- 版心 ---------- */
.wrap{ max-width:var(--w); margin:0 auto; padding:0 28px; }
.wrap-narrow{ max-width:860px; margin:0 auto; padding:0 28px; }

/* ---------- Hero ---------- */
.hero{ padding:120px 0 90px; position:relative; overflow:hidden; }
.hero-grid{
  display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center;
}
.hero-badge{
  display:inline-flex; align-items:center; gap:9px;
  font-size:12.5px; letter-spacing:.08em; color:var(--brand-2);
  background:rgba(59,130,246,.12); border:1px solid rgba(59,130,246,.3);
  padding:7px 16px; border-radius:99px; margin-bottom:26px;
}
.hero-badge .dot{ width:7px; height:7px; border-radius:50%; background:var(--cyan); box-shadow:0 0 8px var(--cyan); }
.hero h1{
  font-size:clamp(34px,4.6vw,56px); line-height:1.22; margin:0 0 20px;
  font-weight:800; letter-spacing:.01em;
}
.hero h1 .grad{ background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero .lead{
  color:var(--ink-2); font-size:17.5px; line-height:1.9; max-width:560px; margin:0 0 36px;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; align-items:center; }
.hero-stats{ display:flex; gap:34px; margin-top:44px; flex-wrap:wrap; }
.hstat b{ display:block; font-size:28px; font-weight:800; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hstat span{ font-size:12.5px; color:var(--ink-3); letter-spacing:.06em; }

/* 右侧可视化代码窗口 */
.hero-visual{ position:relative; }
.code-window{
  background:var(--bg-2); border:1px solid var(--line); border-radius:16px;
  box-shadow:var(--shadow); overflow:hidden;
}
.code-bar{
  display:flex; align-items:center; gap:7px; padding:13px 16px;
  border-bottom:1px solid var(--line); background:var(--bg-1);
}
.code-bar .cb{ width:11px; height:11px; border-radius:50%; }
.code-bar .cb.r{ background:#f87171; } .code-bar .cb.y{ background:#fbbf24; } .code-bar .cb.g{ background:#34d399; }
.code-bar .fname{ margin-left:8px; font-family:var(--font-mono); font-size:12px; color:var(--ink-3); }
.code-body{ padding:20px 22px; font-family:var(--font-mono); font-size:12.5px; line-height:1.9; overflow-x:auto; }
.code-body .ln{ color:var(--ink-3); user-select:none; margin-right:14px; display:inline-block; width:18px; text-align:right; }
.code-body .k{ color:var(--brand-2); }
.code-body .s{ color:var(--teal); }
.code-body .c{ color:var(--ink-3); font-style:italic; }
.code-body .f{ color:var(--accent); }
.float-chip{
  position:absolute; background:var(--bg-3); border:1px solid var(--line-2);
  border-radius:12px; padding:11px 16px; font-size:12.5px; color:var(--ink-2);
  box-shadow:var(--shadow); display:flex; align-items:center; gap:9px; animation:float 5s ease-in-out infinite;
}
.float-chip .ic{ width:22px; height:22px; border-radius:6px; background:var(--grad-soft); display:grid; place-items:center; font-size:12px; }
.chip-1{ top:-24px; right:-8px; }
.chip-2{ bottom:-22px; left:-14px; animation-delay:2.2s; }
@keyframes float{ 0%,100%{ transform:translateY(0);} 50%{ transform:translateY(-10px);} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; gap:9px;
  font-size:14.5px; font-weight:600; letter-spacing:.03em;
  padding:13px 28px; border-radius:10px; cursor:pointer;
  background:var(--grad); color:#fff; border:none;
  box-shadow:0 6px 20px rgba(59,130,246,.4);
  transition:transform .18s, box-shadow .18s;
}
.btn:hover{ transform:translateY(-2px); box-shadow:0 10px 28px rgba(59,130,246,.5); }
.btn.ghost{
  background:transparent; color:var(--ink); border:1px solid var(--line-2);
  box-shadow:none;
}
.btn.ghost:hover{ border-color:var(--brand); box-shadow:none; background:rgba(59,130,246,.08); }
.btn.sm{ padding:10px 20px; font-size:13.5px; }

/* ---------- 通用区块 ---------- */
.section{ padding:96px 0; }
.section + .section{ border-top:1px solid var(--line); }

.sec-head{ max-width:700px; margin-bottom:56px; }
.sec-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.sec-eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-size:12px; letter-spacing:.22em; color:var(--brand-2);
  text-transform:uppercase; margin-bottom:16px;
}
.sec-eyebrow::before{ content:""; width:26px; height:2px; background:var(--grad); border-radius:2px; }
.sec-head.center .sec-eyebrow::after{ content:""; width:26px; height:2px; background:var(--grad); border-radius:2px; }
.sec-head h2{
  font-size:clamp(26px,3.2vw,38px); line-height:1.35; margin:0 0 14px; font-weight:800;
}
.sec-head p{ color:var(--ink-2); margin:0; font-size:16px; line-height:1.9; }

/* ---------- 卡片 ---------- */
.grid{ display:grid; gap:22px; }
.grid-2{ grid-template-columns:repeat(auto-fit,minmax(320px,1fr)); }
.grid-3{ grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.grid-4{ grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); }

.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:30px 28px; position:relative; overflow:hidden;
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.card:hover{ transform:translateY(-5px); border-color:var(--line-2); box-shadow:var(--shadow); }
.card::before{
  content:""; position:absolute; inset:0 0 auto 0; height:3px;
  background:var(--grad); opacity:0; transition:opacity .25s;
}
.card:hover::before{ opacity:1; }
.card .ic{
  width:48px; height:48px; border-radius:12px; background:var(--grad-soft);
  border:1px solid rgba(59,130,246,.25); display:grid; place-items:center;
  margin-bottom:20px; font-size:22px;
}
.card h3{ font-size:19px; margin:0 0 12px; font-weight:700; letter-spacing:.02em; }
.card p{ margin:0; color:var(--ink-2); font-size:14.5px; line-height:1.85; }
.card .tag{
  display:inline-block; font-size:11px; letter-spacing:.1em; color:var(--ink-3);
  margin-bottom:12px;
}

a.card{ color:inherit; }
a.card .more{ margin-top:16px; font-size:13px; color:var(--brand-2); display:inline-flex; align-items:center; gap:6px; }
a.card:hover .more{ gap:10px; }
a.card .more{ transition:gap .2s; }

/* ---------- 流程 ---------- */
.steps{ display:grid; gap:0; counter-reset:st; position:relative; }
.step{
  display:grid; grid-template-columns:64px minmax(0,1fr); gap:24px;
  padding:30px 0; border-bottom:1px dashed var(--line-2); position:relative;
}
.step:last-child{ border-bottom:none; }
.step-num{
  width:64px; height:64px; border-radius:16px; background:var(--grad-soft);
  border:1px solid rgba(59,130,246,.3); display:grid; place-items:center;
  font-size:24px; font-weight:800; background:var(--grad);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.step h4{ margin:0 0 8px; font-size:19px; font-weight:700; }
.step p{ margin:0; color:var(--ink-2); font-size:15px; line-height:1.85; }

/* ---------- 特性列表 ---------- */
.feature-row{
  display:flex; gap:14px; align-items:flex-start; padding:20px 0;
  border-bottom:1px solid var(--line);
}
.feature-row:last-child{ border-bottom:none; }
.feature-row .fi{
  flex:0 0 auto; width:26px; height:26px; border-radius:7px;
  background:var(--grad-soft); color:var(--cyan); display:grid; place-items:center;
  font-size:13px; margin-top:2px;
}
.feature-row h5{ margin:0 0 6px; font-size:16px; font-weight:700; }
.feature-row p{ margin:0; color:var(--ink-2); font-size:14px; line-height:1.8; }

/* ---------- 数据条 / 指标 ---------- */
.stats{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(170px,1fr));
  gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow-s);
}
.stat{ background:var(--card); padding:30px 22px; text-align:center; }
.stat b{ display:block; font-size:34px; font-weight:800; background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; line-height:1.2; margin-bottom:8px; }
.stat span{ font-size:12.5px; color:var(--ink-3); letter-spacing:.06em; }

/* ---------- 技术栈 ---------- */
.tech-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:16px; }
.tech{
  display:flex; align-items:center; gap:13px; padding:18px 20px;
  background:var(--bg-2); border:1px solid var(--line); border-radius:12px;
  transition:border-color .2s, transform .2s;
}
.tech:hover{ border-color:var(--line-2); transform:translateY(-2px); }
.tech .tl{ width:40px; height:40px; border-radius:10px; background:var(--grad-soft); display:grid; place-items:center; font-size:19px; flex:0 0 auto; }
.tech .tn{ font-size:14.5px; font-weight:600; display:block; }
.tech .td{ font-size:12px; color:var(--ink-3); display:block; margin-top:1px; }

/* ---------- 文章页 ---------- */
.layout{ display:grid; grid-template-columns:minmax(0,1fr) 220px; gap:60px; align-items:start; padding:70px 0 100px; }
.article{ min-width:0; max-width:800px; }
.article-head{ padding-bottom:36px; border-bottom:1px solid var(--line); margin-bottom:46px; }
.crumb{ font-size:12.5px; letter-spacing:.12em; color:var(--ink-3); margin-bottom:22px; }
.crumb a:hover{ color:var(--brand-2); }
.article-head h1{ font-size:clamp(30px,4vw,44px); line-height:1.3; margin:0 0 16px; font-weight:800; }
.article-head .dek{ color:var(--ink-2); font-size:17px; line-height:1.9; margin:0; }

.article h2{
  font-size:25px; margin:58px 0 20px; line-height:1.45; font-weight:800;
  scroll-margin-top:96px; padding-left:20px; position:relative;
}
.article h2::before{ content:""; position:absolute; left:0; top:.42em; width:4px; height:1em; border-radius:2px; background:var(--grad); }
.article h3{ font-size:19px; margin:40px 0 14px; font-weight:700; scroll-margin-top:96px; }
.article h4{ font-size:16.5px; margin:28px 0 10px; font-weight:700; color:var(--brand-2); }
.article p{ margin:0 0 20px; color:var(--ink-2); line-height:2.0; }
.article p strong, .article li strong{ color:var(--ink); font-weight:700; }
.article ul, .article ol{ margin:0 0 22px; padding-left:0; list-style:none; }
.article li{ position:relative; padding-left:26px; margin-bottom:12px; line-height:1.95; color:var(--ink-2); }
.article ul > li::before{ content:""; position:absolute; left:6px; top:.88em; width:6px; height:6px; border-radius:2px; background:var(--brand); transform:rotate(45deg); }
.article ol{ counter-reset:li; }
.article ol > li{ counter-increment:li; padding-left:32px; }
.article ol > li::before{ content:counter(li,decimal-leading-zero); position:absolute; left:0; top:0; font-family:var(--font-mono); font-size:13px; color:var(--brand-2); line-height:2.4; }
.article a:not(.btn){ color:var(--brand-2); border-bottom:1px solid rgba(59,130,246,.3); transition:border-color .18s; }
.article a:not(.btn):hover{ border-bottom-color:var(--brand); }

/* 代码块 */
.code-block{
  background:var(--bg-1); border:1px solid var(--line); border-radius:12px;
  padding:20px 22px; font-family:var(--font-mono); font-size:13px; line-height:1.9;
  overflow-x:auto; margin:24px 0; color:var(--ink-2);
}
.code-block .c{ color:var(--ink-3); }
.code-block .k{ color:var(--brand-2); }
.code-block .s{ color:var(--teal); }

/* 提示块 */
.note{
  margin:28px 0; padding:22px 26px; border-radius:12px;
  border:1px solid var(--line); background:var(--bg-2);
}
.note .note-t{ display:block; font-size:11.5px; letter-spacing:.2em; color:var(--cyan); margin-bottom:10px; }
.note p{ margin:0 0 12px; font-size:14.5px; }
.note p:last-child{ margin-bottom:0; }
.note.warn{ border-left:3px solid var(--brand); }
.note.warn .note-t{ color:var(--brand-2); }

/* 术语框 */
.termbox{ display:grid; gap:14px; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); margin:28px 0; }
.termbox .tb{ border:1px solid var(--line); border-radius:12px; padding:18px 20px; background:var(--bg-2); }
.termbox .tb b{ display:block; font-size:15.5px; margin-bottom:8px; color:var(--brand-2); }
.termbox .tb span{ font-size:13.5px; line-height:1.85; color:var(--ink-2); }

/* 表格 */
.tbl-wrap{ margin:28px 0; overflow-x:auto; border:1px solid var(--line); border-radius:12px; }
table{ width:100%; border-collapse:collapse; font-size:14px; min-width:560px; background:var(--bg-2); }
th,td{ padding:14px 18px; text-align:left; border-bottom:1px solid var(--line); }
th{ font-size:12.5px; letter-spacing:.1em; color:var(--ink-3); font-weight:600; background:var(--bg-3); }
tr:last-child td{ border-bottom:none; }
td{ color:var(--ink-2); line-height:1.8; }

/* 目录 */
.toc{ position:sticky; top:96px; }
.toc-t{ font-size:11.5px; letter-spacing:.22em; color:var(--ink-3); padding-bottom:12px; border-bottom:1px solid var(--line); margin-bottom:14px; }
.toc ol{ list-style:none; margin:0; padding:0; counter-reset:t; }
.toc ol li{ counter-increment:t; margin-bottom:9px; }
.toc a{ font-size:13px; color:var(--ink-3); line-height:1.7; display:block; padding-left:22px; position:relative; transition:color .16s; }
.toc a::before{ content:counter(t,decimal-leading-zero); position:absolute; left:0; top:0; font-family:var(--font-mono); font-size:11px; color:var(--line-2); }
.toc a:hover{ color:var(--brand-2); }
.toc a.active{ color:var(--brand-2); font-weight:600; }
.toc a.active::before{ color:var(--brand); }

/* 前后导航 */
.pager{ display:flex; justify-content:space-between; gap:18px; flex-wrap:wrap; margin-top:70px; padding-top:30px; border-top:1px solid var(--line); }
.pager a{ flex:1 1 240px; border:1px solid var(--line); border-radius:12px; padding:16px 20px; background:var(--bg-2); transition:.2s; }
.pager a:hover{ border-color:var(--line-2); transform:translateY(-2px); }
.pager .pl{ font-size:11.5px; letter-spacing:.16em; color:var(--ink-3); display:block; margin-bottom:6px; }
.pager .pn{ font-size:15.5px; font-weight:600; }
.pager .next{ text-align:right; }

/* ---------- FAQ ---------- */
.faq{ border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:var(--bg-2); }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item:last-child{ border-bottom:none; }
.faq-q{
  width:100%; background:none; border:none; color:var(--ink);
  font-size:16px; font-weight:600; text-align:left; cursor:pointer;
  padding:22px 26px; display:flex; justify-content:space-between; align-items:center;
  gap:16px; font-family:var(--font-sans);
}
.faq-q .ico{ flex:0 0 auto; width:22px; height:22px; border-radius:6px; background:var(--grad-soft); color:var(--brand-2); display:grid; place-items:center; font-size:15px; transition:transform .25s; }
.faq-item.open .faq-q .ico{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a .inner{ padding:0 26px 24px; color:var(--ink-2); font-size:14.5px; line-height:1.9; }
.faq-a .inner p{ margin:0; }

/* ---------- CTA ---------- */
.cta{
  position:relative; overflow:hidden; border-radius:20px;
  background:var(--grad); padding:60px 54px; text-align:center;
  box-shadow:0 16px 50px rgba(59,130,246,.35);
}
.cta::before, .cta::after{
  content:""; position:absolute; border-radius:50%; background:rgba(255,255,255,.1);
}
.cta::before{ width:280px; height:280px; top:-120px; right:-60px; }
.cta::after{ width:220px; height:220px; bottom:-100px; left:-50px; }
.cta h2{ font-size:clamp(24px,3vw,34px); margin:0 0 14px; font-weight:800; color:#fff; position:relative; z-index:1; }
.cta p{ color:rgba(255,255,255,.85); margin:0 0 30px; font-size:15.5px; position:relative; z-index:1; }
.cta .btn{ background:#fff; color:var(--brand); box-shadow:0 6px 20px rgba(0,0,0,.2); }
.cta .btn:hover{ box-shadow:0 10px 30px rgba(0,0,0,.28); }
.cta .btn.ghost{ background:transparent; color:#fff; border-color:rgba(255,255,255,.5); }

/* ---------- 页脚 ---------- */
.site-foot{ border-top:1px solid var(--line); background:var(--bg-1); padding:60px 0 36px; }
.foot-grid{ display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:36px; margin-bottom:40px; }
.site-foot h4{ font-size:12px; letter-spacing:.18em; color:var(--ink-3); margin:0 0 16px; font-weight:600; text-transform:uppercase; }
.site-foot a{ font-size:14px; color:var(--ink-2); display:block; margin-bottom:10px; }
.site-foot a:hover{ color:var(--brand-2); }
.site-foot p{ font-size:14px; color:var(--ink-2); line-height:1.9; margin:0; max-width:320px; }
.foot-brand{ display:flex; align-items:center; gap:11px; margin-bottom:16px; }
.foot-bottom{ border-top:1px solid var(--line); padding-top:24px; font-size:12.5px; color:var(--ink-3); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; }

/* ---------- 动效 ---------- */
.reveal{ opacity:0; transform:translateY(22px); }
.reveal.in{ opacity:1; transform:none; transition:opacity .7s ease, transform .7s cubic-bezier(.22,.9,.3,1); }

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .layout{ grid-template-columns:minmax(0,1fr); gap:0; }
  .toc{ display:none; }
  .hero-grid{ grid-template-columns:1fr; gap:48px; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:900px){
  .nav{
    position:absolute; top:70px; left:0; right:0; flex-direction:column; align-items:stretch;
    background:var(--bg-1); border-bottom:1px solid var(--line); padding:10px 20px 20px;
    display:none; box-shadow:0 20px 40px rgba(0,0,0,.4);
  }
  .nav.open{ display:flex; }
  .nav a{ padding:13px 8px; border-bottom:1px solid var(--line); border-radius:0; }
  .nav a.active::after{ display:none; }
  .nav-cta{ margin:12px 0 0; text-align:center; }
  .nav-toggle{ display:block; }
}
@media (max-width:640px){
  body{ font-size:15.5px; }
  .head-inner{ padding:0 18px; height:64px; }
  .nav{ top:64px; }
  .wrap,.wrap-narrow{ padding:0 18px; }
  .section{ padding:64px 0; }
  .hero{ padding:80px 0 64px; }
  .foot-grid{ grid-template-columns:1fr; gap:28px; }
  .step{ grid-template-columns:52px minmax(0,1fr); gap:16px; }
  .step-num{ width:52px; height:52px; font-size:20px; }
  .pager a{ flex:1 1 100%; }
  .pager .next{ text-align:left; }
  .cta{ padding:44px 24px; }
  .hero-stats{ gap:24px; }
  .float-chip{ display:none; }
}

@media print{
  .site-head,.toc,.pager,.progress,.site-foot,.cta{ display:none; }
  body{ background:#fff; color:#000; }
}