/* 八宝周同学 · 人力资源 AI 实战绿皮书 —— 宣纸靛蓝主题（暖纸白 × 靛蓝 × 朱砂点缀） */
:root {
  --bg: #f8f8f4;
  --bg-soft: #f2f1ea;
  --surface: #ffffff;
  --surface-2: #f6f5ef;
  --line: #e6e5da;
  --line-soft: #efeee3;
  --ink: #2b2f3a;
  --ink-soft: #5c6270;
  --ink-faint: #8d93a0;
  --gold: #3f5ea8;
  --gold-deep: #324e8c;
  --gold-dim: rgba(63, 94, 168, 0.08);
  --cyan: #2a9d8f;
  --cyan-dim: rgba(42, 157, 143, 0.09);
  --green: #3d8f5f;
  --blue: #3a6ea5;
  --purple: #7c5cbf;
  --red: #c8553d;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(43,47,58,.05), 0 8px 28px rgba(43,47,58,.07);
  --serif: "Songti SC", "Noto Serif SC", "STSong", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background:
    radial-gradient(1100px 480px at 15% -5%, rgba(63,94,168,.05), transparent 60%),
    radial-gradient(900px 500px at 95% 10%, rgba(42,157,143,.04), transparent 55%),
    var(--bg);
  color: var(--ink);
  line-height: 1.78;
  font-size: 15.5px;
}
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== 顶部导航 ===== */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: rgba(248, 248, 244, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1300px; margin: 0 auto; padding: 12px 26px;
  display: flex; align-items: center; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--serif); }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #4a6ab5, var(--gold-deep));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800;
  box-shadow: 0 3px 12px rgba(63,94,168,.28);
}
.brand-name { font-size: 17px; font-weight: 700; color: var(--ink); }
.brand-name small { font-size: 11px; color: var(--ink-soft); font-weight: 400; display: block; line-height: 1.2; letter-spacing: 3px; }
.topnav { margin-left: auto; display: flex; gap: 4px; flex-wrap: wrap; }
.topnav a { padding: 6px 13px; border-radius: 999px; font-size: 14px; color: var(--ink-soft); }
.topnav a:hover { background: var(--surface); color: var(--gold); text-decoration: none; }
.topnav a.active { background: var(--gold); color: #fff; font-weight: 600; }

/* ===== 布局 ===== */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 26px; }
.page { padding: 44px 0 80px; }

.site {
  display: flex; max-width: 1300px; margin: 0 auto;
  padding-top: 62px; min-height: 100vh;
}
.sidebar {
  width: 230px; flex: none;
  position: sticky; top: 62px; height: calc(100vh - 62px);
  overflow-y: auto; border-right: 1px solid var(--line);
  background: var(--surface); padding: 18px 0 40px;
}
.main {
  flex: 1; min-width: 0;
  background: var(--bg);
}
.main > .cover, .main > .page { padding-left: 34px; padding-right: 34px; }

/* ===== 侧边目录 ===== */
.side-nav { display: flex; flex-direction: column; }
.side-link {
  display: block; padding: 7px 20px; font-size: 13.5px; color: var(--ink-soft);
  border-left: 3px solid transparent;
}
.side-link:hover { color: var(--gold); background: var(--gold-dim); text-decoration: none; }
.side-link.active { color: var(--gold); background: var(--gold-dim); border-left-color: var(--gold); font-weight: 600; }
.side-sub { padding-left: 32px; font-size: 13px; }
.side-sub2 { padding-left: 44px; font-size: 12.5px; color: var(--ink-faint); }
.side-title {
  padding: 14px 20px 6px; font-size: 12px; letter-spacing: 1px;
  color: var(--ink-faint); text-transform: uppercase; font-weight: 700;
}
.side-divider { height: 1px; background: var(--line); margin: 12px 16px; }

/* ===== 封面 ===== */
.cover {
  padding: 46px 0 38px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 420px at 25% 0%, rgba(63,94,168,.06), transparent 65%),
    radial-gradient(700px 380px at 85% 20%, rgba(42,157,143,.05), transparent 60%);
}
.cover .kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: 4px; color: var(--gold);
  border: 1px solid rgba(63,94,168,.35); border-radius: 999px;
  padding: 5px 15px; background: var(--gold-dim); margin-bottom: 22px;
}
.cover h1 {
  font-family: var(--serif); font-size: 42px; line-height: 1.32;
  color: var(--ink); margin-bottom: 16px; font-weight: 700;
}
.cover h1 em { font-style: normal; color: var(--gold); }
.cover .sub { font-size: 17px; color: var(--ink-soft); max-width: 660px; }
.cover .meta { margin-top: 20px; font-size: 13px; color: var(--ink-soft); display: flex; gap: 20px; flex-wrap: wrap; }
.cover .meta b { color: var(--gold); }

/* ===== 二维码横排（首页顶部） ===== */
.qr-row { display: flex; justify-content: center; gap: 30px; margin: 28px 0 14px; flex-wrap: wrap; }
.qr-inline { text-align: center; width: 112px; }
.qr-inline img { width: 100%; aspect-ratio: 1/1; object-fit: contain; border-radius: 10px; border: 1px solid var(--line); background: #fff; }
.qr-inline .qr-label { margin-top: 8px; font-size: 12.5px; color: var(--ink-soft); }

/* ===== Meta 信息条 ===== */
.meta-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 6px; }
.meta-pill {
  font-size: 12px; padding: 4px 12px; border-radius: 999px;
  background: var(--surface); color: var(--ink-soft); border: 1px solid var(--line);
}
.meta-pill b { color: var(--gold); font-weight: 600; }

/* ===== 通知框 ===== */
.notice {
  display: flex; gap: 16px; align-items: flex-start;
  background: rgba(61,143,95,.09); border: 1px solid rgba(61,143,95,.30);
  border-radius: 12px; padding: 16px 20px; margin: 22px 0 6px;
}
.notice .notice-icon { font-size: 22px; flex: none; }
.notice .notice-body { font-size: 14px; color: var(--ink); line-height: 1.7; }
.notice .notice-body b { color: var(--green); }
.notice .notice-body a { color: var(--gold); font-weight: 600; }

/* ===== ☰ 折叠目录（仅小屏使用） ===== */
.toc {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); padding: 22px 26px; margin: 34px 0 0;
}
.toc summary {
  cursor: pointer; font-family: var(--serif); font-size: 17px; font-weight: 700;
  color: var(--ink); list-style: none; display: flex; align-items: center; gap: 10px;
}
.toc summary::before { content: "☰"; color: var(--gold); font-size: 18px; }
.toc[open] summary { margin-bottom: 14px; }
.toc ol { margin-left: 1.4em; font-size: 14px; color: var(--ink-soft); display: grid; gap: 7px; }
.toc a { color: var(--ink-soft); }
.toc a:hover { color: var(--gold); }

/* ===== 章节结构 ===== */
.section { margin-top: 60px; }
.section-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 6px; }
.section-head .no {
  font-family: var(--serif); font-size: 30px; color: rgba(63,94,168,.30); font-weight: 700;
}
.section-head h2 { font-family: var(--serif); font-size: 25px; color: var(--ink); font-weight: 700; }
.section-sub { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 22px; }

/* 章节面包屑 */
.crumb-line {
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: 1px;
  border-top: 1px solid var(--line); padding-top: 18px; margin-top: 64px;
}
.chapter { margin-top: 46px; }
.chapter .chapter-crumb {
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: 1px; margin-bottom: 10px;
}
.chapter h2 {
  font-family: var(--serif); font-size: 27px; color: var(--ink); font-weight: 700;
  padding-left: 16px; border-left: 4px solid var(--gold); margin-bottom: 14px; line-height: 1.4;
}
.chapter h3 { font-family: var(--serif); font-size: 19px; color: var(--gold); margin: 26px 0 10px; }
.chapter p { color: var(--ink-soft); font-size: 15px; margin-bottom: 12px; }
.chapter p b, .chapter li b { color: var(--ink); }
.chapter ul { margin: 0 0 14px 1.3em; color: var(--ink-soft); font-size: 14.5px; display: grid; gap: 6px; }
.chapter blockquote {
  border-left: 3px solid var(--gold); background: var(--gold-dim);
  border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 16px 0;
  color: var(--ink); font-size: 14.5px;
}

/* ===== 卡片 ===== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow); position: relative; overflow: hidden;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); border-color: rgba(63,94,168,.40); box-shadow: 0 4px 10px rgba(35,47,40,.06), 0 14px 36px rgba(35,47,40,.12); }
.card .badge {
  align-self: flex-start; font-size: 12px; padding: 3px 11px; border-radius: 999px;
  font-weight: 600; letter-spacing: .5px; margin-bottom: 12px;
}
.card h3 { font-family: var(--serif); font-size: 19px; color: var(--ink); margin-bottom: 8px; line-height: 1.4; }
.card p { color: var(--ink-soft); font-size: 14px; flex: 1; }
.card .go { margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--gold); }
.card ul { margin: 8px 0 0 1.2em; color: var(--ink-soft); font-size: 13.5px; flex: 1; display: grid; gap: 4px; }

/* 领域配色（浅色版） */
.c-green  { background: rgba(61,143,95,.12); color: #22734a; }
.c-amber  { background: rgba(176,126,20,.12); color: #96690c; }
.c-blue   { background: rgba(58,110,165,.12); color: #2f5e94; }
.c-teal   { background: rgba(42,157,143,.12); color: #1f7d72; }
.c-purple { background: rgba(124,92,191,.12); color: #5f43a8; }
.c-red    { background: rgba(200,85,61,.12); color: #a34830; }

/* ===== 专家团卡片 ===== */
.team-card { padding: 0; display: flex; flex-direction: column; }
.team-card .top { padding: 20px 22px 0; }
.team-card .body { padding: 14px 22px 18px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.team-card .tagline { font-size: 13.5px; color: var(--ink-soft); }
.team-card .members { font-size: 12.5px; color: var(--ink-soft); line-height: 1.9; }
.team-card .members b { color: var(--ink); font-weight: 600; }
.team-card .foot {
  border-top: 1px dashed var(--line); padding: 14px 22px;
  display: flex; align-items: center; gap: 10px; background: var(--surface-2);
  border-radius: 0 0 var(--radius) var(--radius);
}
.team-card .foot .agent-count { font-size: 12.5px; color: var(--ink-soft); }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--gold); color: #fff; border: none; cursor: pointer;
  padding: 9px 19px; border-radius: 9px; font-size: 14px; font-weight: 700;
  transition: background .15s ease, box-shadow .15s ease;
}
.btn:hover { background: var(--gold-deep); text-decoration: none; box-shadow: 0 4px 18px rgba(63,94,168,.30); }
.btn.small { padding: 6px 14px; font-size: 13px; }
.btn.ghost { background: transparent; color: var(--gold); border: 1.5px solid rgba(63,94,168,.45); }
.btn.ghost:hover { background: var(--gold-dim); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ===== 详情页 ===== */
.detail-hero { padding: 48px 0 8px; }
.crumb { font-size: 13px; color: var(--ink-soft); margin-bottom: 16px; }
.crumb a { color: var(--ink-soft); }
.crumb a:hover { color: var(--gold); }
.detail-hero h1 { font-family: var(--serif); font-size: 34px; color: var(--ink); margin: 10px 0 8px; line-height: 1.35; }
.detail-hero .tagline { font-size: 16px; color: var(--ink-soft); }
.detail-meta { display: flex; gap: 10px; margin: 18px 0 6px; flex-wrap: wrap; }
.pill {
  font-size: 12.5px; padding: 4px 12px; border-radius: 999px;
  background: var(--gold-dim); color: var(--gold); border: 1px solid rgba(63,94,168,.28);
}
.pill.plain { background: var(--surface); color: var(--ink-soft); border-color: var(--line); }

.block { margin-top: 40px; }
.block-head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.block-head .ico {
  width: 30px; height: 30px; border-radius: 8px; background: var(--gold-dim);
  color: var(--gold); display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.block-head h2 { font-family: var(--serif); font-size: 21px; color: var(--ink); }

.pain-list { list-style: none; display: grid; gap: 10px; }
.pain-list li {
  background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--red);
  border-radius: 10px; padding: 13px 16px; font-size: 14.5px; color: var(--ink);
}

/* 角色卡 */
.role-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.role-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; box-shadow: var(--shadow);
}
.role-card .rc-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.role-avatar {
  width: 44px; height: 44px; border-radius: 50%; flex: none;
  background: linear-gradient(135deg, #3fb8a5, var(--cyan));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; font-family: var(--serif);
}
.role-card.leader .role-avatar { background: linear-gradient(135deg, #4a6ab5, var(--gold-deep)); }
.role-card .rc-name { font-weight: 700; font-size: 15.5px; color: var(--ink); }
.role-card .rc-name small { display: block; font-weight: 400; font-size: 12px; color: var(--ink-soft); }
.role-card .rc-role { margin-left: auto; font-size: 11.5px; color: var(--gold); background: var(--gold-dim); padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.role-card .rc-duty { font-size: 13.5px; color: var(--ink); margin-bottom: 10px; }
.role-card .rc-io { display: grid; gap: 5px; font-size: 12.5px; color: var(--ink-soft); background: var(--bg-soft); border-radius: 8px; padding: 9px 12px; }
.role-card .rc-io b { color: var(--ink); font-weight: 600; }

/* 链路 */
.chain { counter-reset: step; display: grid; gap: 0; }
.chain li {
  list-style: none; counter-increment: step; position: relative;
  padding: 0 0 22px 46px; font-size: 14.5px; color: var(--ink-soft);
}
.chain li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--gold); color: #fff; font-size: 12px; font-weight: 800;
  display: flex; align-items: center; justify-content: center; font-family: var(--mono);
}
.chain li::after {
  content: ""; position: absolute; left: 14.5px; top: 32px; bottom: 4px;
  width: 1.5px; background: var(--line);
}
.chain li:last-child::after { display: none; }
.chain li b { color: var(--ink); }
.chain li .gate {
  display: inline-block; margin-left: 6px; font-size: 11.5px; color: var(--red);
  background: rgba(200,85,61,.10); border: 1px solid rgba(200,85,61,.30);
  padding: 1px 8px; border-radius: 999px; font-weight: 600;
}

/* 铁律 */
.rules-box {
  background: linear-gradient(135deg, rgba(63,94,168,.06), rgba(50,78,140,.04));
  border: 1px solid rgba(63,94,168,.30); border-radius: var(--radius);
  padding: 22px 24px;
}
.rules-box h3 { font-family: var(--serif); color: var(--gold); font-size: 16px; margin-bottom: 12px; letter-spacing: 2px; }
.rules-box ol { margin-left: 1.4em; font-size: 14.5px; color: var(--ink); display: grid; gap: 7px; }
.rules-box ol li::marker { color: var(--gold); font-weight: 700; }

/* 怎么用 */
.usage-list { display: grid; gap: 10px; }
.usage-list li {
  list-style: none; background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 13px 16px 13px 44px; position: relative;
  font-size: 14.5px; color: var(--ink); box-shadow: var(--shadow);
}
.usage-list li::before {
  content: "「"; position: absolute; left: 14px; top: 10px;
  font-family: var(--serif); font-size: 20px; color: var(--gold); opacity: .55;
}

/* 下载区 */
.download-panel {
  background: linear-gradient(150deg, #ffffff 0%, #f2f4fa 70%);
  border: 1px solid rgba(63,94,168,.35);
  border-radius: 16px; color: var(--ink); padding: 30px 32px;
  display: flex; gap: 26px; align-items: center; flex-wrap: wrap;
  box-shadow: 0 10px 34px rgba(35,47,40,.10);
}
.download-panel .dp-info { flex: 1; min-width: 260px; }
.download-panel h3 { font-family: var(--serif); font-size: 21px; color: var(--gold); margin-bottom: 8px; }
.download-panel p { font-size: 13.5px; color: var(--ink-soft); }
.download-panel .dp-meta { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }
.download-panel .dp-meta span {
  font-size: 11.5px; padding: 3px 10px; border-radius: 999px;
  background: var(--gold-dim); color: var(--gold); border: 1px solid rgba(63,94,168,.28);
  font-family: var(--mono);
}
.btn.download { background: var(--gold); font-size: 15px; padding: 12px 26px; }
.btn.download:hover { background: var(--gold-deep); }

/* 产物 chips */
.deliver-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.deliver-chips span {
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 16px; font-size: 13.5px; color: var(--ink); box-shadow: var(--shadow);
}
.deliver-chips span::before { content: "📦 "; }

/* ===== 表格 ===== */
.spec-table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); font-size: 14px; }
.spec-table th { background: var(--surface-2); color: var(--gold); text-align: left; padding: 11px 16px; font-weight: 600; border-bottom: 1px solid var(--line); }
.spec-table td { padding: 11px 16px; border-bottom: 1px solid var(--line-soft); color: var(--ink-soft); vertical-align: top; }
.spec-table td b { color: var(--ink); }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table code { font-family: var(--mono); font-size: 12.5px; background: var(--gold-dim); padding: 2px 7px; border-radius: 5px; color: var(--gold); }

/* 提示条 */
.note {
  background: var(--cyan-dim); border: 1px solid rgba(42,157,143,.28);
  border-radius: 12px; padding: 16px 20px; font-size: 14px; color: var(--ink);
}
.note b { color: var(--cyan); }
.note a { color: var(--gold); }

/* ===== 模块入口卡 ===== */
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.industry-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px;
  transition: transform .18s ease, border-color .18s ease;
}
.industry-card:hover { transform: translateY(-3px); border-color: rgba(63,94,168,.40); }
.industry-card .ic-status { font-size: 12px; font-weight: 600; letter-spacing: .5px; }
.industry-card h3 { font-family: var(--serif); font-size: 20px; color: var(--ink); }
.industry-card p { font-size: 13.5px; color: var(--ink-soft); flex: 1; }
.industry-card .go { font-size: 14px; font-weight: 700; color: var(--gold); }
.st-done { color: #22734a; background: rgba(61,143,95,.12); padding: 3px 11px; border-radius: 999px; align-self: flex-start; }
.st-frame { color: #96690c; background: rgba(176,126,20,.12); padding: 3px 11px; border-radius: 999px; align-self: flex-start; }
.st-plan { color: var(--ink-soft); background: var(--surface-2); padding: 3px 11px; border-radius: 999px; align-self: flex-start; }

/* ===== 附录角色卡表 ===== */
.rolecast-table td:first-child { font-weight: 600; color: var(--ink); }

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--line); padding: 34px 0 44px; margin-top: 60px;
  color: var(--ink-soft); font-size: 13px; text-align: center;
  background: var(--bg-soft);
}
.footer .f-brand { font-family: var(--serif); color: var(--gold); font-size: 15px; font-weight: 700; margin-bottom: 6px; }

/* ===== 二维码 / 关注我 ===== */
.qr-section { margin-top: 50px; }
.qr-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.qr-card {
  background: #ffffff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; text-align: center; box-shadow: var(--shadow);
}
.qr-card img {
  width: 100%; aspect-ratio: 1 / 1; object-fit: contain; border-radius: 8px;
  background: #fff;
}
.qr-card .qr-title { margin-top: 12px; font-weight: 700; color: #2b2f3a; font-size: 14.5px; }
.qr-card .qr-desc { font-size: 12px; color: #5c6270; margin-top: 4px; }

@media (max-width: 960px) {
  .sidebar { display: none; }
  .main > .cover, .main > .page { padding-left: 22px; padding-right: 22px; }
  .site { padding-top: 62px; }
}
/* ===== 安装四步（横向步骤卡 + 图示） ===== */
.install-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.istep {
  position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 18px 16px 16px; box-shadow: var(--shadow);
}
.istep:not(:last-child)::after {
  content: "→"; position: absolute; right: -15px; top: 50%; transform: translateY(-50%);
  z-index: 2; width: 22px; height: 22px; border-radius: 50%;
  background: var(--gold); color: #fff; font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(63,94,168,.30);
}
.istep .no {
  display: inline-flex; width: 30px; height: 30px; border-radius: 50%;
  background: var(--gold); color: #fff; font-size: 14px; font-weight: 800;
  align-items: center; justify-content: center; margin-bottom: 10px;
}
.istep h4 { font-size: 15.5px; color: var(--ink); margin-bottom: 6px; }
.istep p { font-size: 12.5px; color: var(--ink-soft); line-height: 1.65; }
.istep code { font-family: var(--mono); font-size: 11.5px; background: var(--gold-dim); color: var(--gold); padding: 1px 6px; border-radius: 5px; }
.install-figure {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 20px 20px 14px; box-shadow: var(--shadow); margin-top: 24px;
}
.install-figure svg { width: 100%; height: auto; display: block; }
.install-cap { text-align: center; font-size: 13px; color: var(--ink-soft); margin-top: 10px; }
.install-cap b { color: var(--red); }
.install-invite { text-align: center; font-size: 13.5px; color: var(--ink-soft); margin-top: 12px; }
.install-invite a { font-weight: 600; }

@media (max-width: 860px) {
  .cards, .cards.two, .industry-grid { grid-template-columns: 1fr; }
  .role-grid { grid-template-columns: 1fr; }
  .qr-grid { grid-template-columns: repeat(2, 1fr); }
  .install-steps { grid-template-columns: 1fr; }
  .istep:not(:last-child)::after { display: none; }
  .qr-row { gap: 18px; }
  .cover h1 { font-size: 30px; }
  .topnav { display: none; }
}