/* 智多GEO · 官网样式 v1.0 · 明亮SaaS风 */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --violet: #7c3aed;
  --sky: #0ea5e9;
  --ink: #0f172a;
  --ink-soft: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --grad: linear-gradient(120deg, #4f46e5 0%, #7c3aed 55%, #0ea5e9 110%);
  --radius: 16px;
  --shadow: 0 10px 40px -12px rgba(79, 70, 229, 0.18);
  --shadow-lg: 0 24px 60px -16px rgba(79, 70, 229, 0.25);
  --font: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- 导航 ---------- */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,.85); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: .25s; }
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 4px 20px -10px rgba(15,23,42,.08); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: .5px; }
.logo-mark { width: 34px; height: 34px; border-radius: 9px; background: var(--grad); color: #fff; display: grid; place-items: center; font-size: 17px; font-weight: 800; }
.nav-inner { gap: 20px; }
.logo { flex: 0 0 auto; }
/* 导航文字一律不折行；横向空间不足时靠 gap/字号收缩消化，绝不换行。
   ≤960px 由汉堡菜单接管（见「响应式」段），所以这里只需管住 961px 以上。 */
.nav-links { display: flex; gap: 24px; align-items: center; font-size: 15px; color: var(--ink-soft); white-space: nowrap; flex-wrap: nowrap; }
.nav-links a { white-space: nowrap; }
@media (max-width: 1180px) {
  .nav-inner { gap: 14px; }
  .nav-links { gap: 16px; font-size: 14px; }
  .logo { font-size: 17px; }
}
.nav-links a:hover { color: var(--primary); }
.nav-cta { padding: 9px 20px; border-radius: 10px; background: var(--grad); color: #fff !important; font-weight: 600; box-shadow: var(--shadow); }
.nav-burger { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--ink); }

/* ---------- 行业定制下拉 ---------- */
.nav-drop { position: relative; }
.nav-drop-btn { display: inline-flex; align-items: center; gap: 5px; background: none; border: none; padding: 0; font: inherit; font-size: inherit; color: inherit; cursor: pointer; white-space: nowrap; }
.nav-drop-btn:hover { color: var(--primary); }
.nav-caret { font-size: 10px; opacity: .7; display: inline-block; transition: transform .2s; }
.nav-drop.open .nav-caret { transform: rotate(180deg); }
.nav-drop-menu { position: absolute; top: calc(100% + 12px); left: 50%; transform: translate(-50%, -6px); background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; min-width: 168px; display: flex; flex-direction: column; gap: 2px; opacity: 0; visibility: hidden; transition: .18s; z-index: 120; }
.nav-drop-menu::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px; }
.nav-drop.open .nav-drop-menu, .nav-drop:hover .nav-drop-menu, .nav-drop:focus-within .nav-drop-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.nav-drop-menu a { padding: 9px 14px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.nav-drop-menu a:hover { background: #f1f5f9; color: var(--primary); }
.nav-drop-menu a.active { color: var(--primary); font-weight: 700; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 168px 0 110px; overflow: hidden; }
.hero-blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .35; pointer-events: none; }
.hero-blob.b1 { width: 520px; height: 520px; background: #c7d2fe; top: -140px; right: -120px; }
.hero-blob.b2 { width: 420px; height: 420px; background: #ddd6fe; bottom: -160px; left: -100px; }
.hero-blob.b3 { width: 320px; height: 320px; background: #bae6fd; top: 160px; left: 44%; opacity: .25; }
.hero-inner { position: relative; text-align: center; max-width: 860px; margin: 0 auto; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px; background: #eef2ff; color: var(--primary); font-size: 14px; font-weight: 600; border: 1px solid #e0e7ff; }
.hero h1 { margin: 26px 0 20px; font-size: 52px; line-height: 1.25; font-weight: 800; letter-spacing: -1px; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.sub { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 auto 36px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn { display: inline-block; padding: 14px 32px; border-radius: 12px; font-size: 16px; font-weight: 600; transition: .2s; cursor: pointer; border: none; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 10px 22px; font-size: 15px; }

/* ---------- 通用 Section ---------- */
section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.sec-tag { display: inline-block; font-size: 14px; font-weight: 700; color: var(--primary); background: #eef2ff; border-radius: 999px; padding: 5px 16px; margin-bottom: 16px; letter-spacing: 1px; }
.sec-head h2 { font-size: 38px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 14px; }
.sec-head p { color: var(--muted); font-size: 17px; }

/* ---------- 痛点 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pain-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 28px; transition: .25s; }
.pain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c7d2fe; }
.pain-card .icon { width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center; font-size: 25px; margin-bottom: 20px; background: #eef2ff; }
.pain-card h3 { font-size: 19px; margin-bottom: 10px; }
.pain-card p { color: var(--muted); font-size: 15px; }

/* ---------- 七大模块 ---------- */
.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.module-grid .module-card:nth-child(7) { grid-column: span 2; }
.module-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; position: relative; overflow: hidden; transition: .25s; }
.module-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--grad); opacity: 0; transition: .25s; }
.module-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.module-card:hover::before { opacity: 1; }
.module-card .emoji { font-size: 30px; }
.module-card h3 { font-size: 18px; margin: 14px 0 4px; }
.module-card .en { font-size: 12.5px; color: var(--primary); font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.module-card p { color: var(--muted); font-size: 14.5px; margin-top: 10px; }

/* ---------- 数据资产 ---------- */
.stats-band { background: var(--grad); border-radius: 24px; padding: 64px 48px; color: #fff; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; text-align: center; box-shadow: var(--shadow-lg); }
.stat-num { font-size: 56px; font-weight: 800; letter-spacing: -1px; font-variant-numeric: tabular-nums; }
.stat-label { font-size: 16px; opacity: .92; margin-top: 6px; }
.stat-desc { font-size: 13.5px; opacity: .75; margin-top: 4px; }

/* ---------- 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.flow-step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px; position: relative; }
.flow-step .num { width: 40px; height: 40px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; display: grid; place-items: center; font-size: 17px; margin-bottom: 16px; }
.flow-step h3 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { color: var(--muted); font-size: 14.5px; }

/* ---------- 报告样例 ---------- */
.report-show { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.report-show h3 { font-size: 26px; margin-bottom: 14px; }
.report-show p { color: var(--muted); margin-bottom: 18px; }
.check-list { list-style: none; margin-bottom: 28px; }
.check-list li { padding: 7px 0 7px 30px; position: relative; color: var(--ink-soft); font-size: 15.5px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; width: 21px; height: 21px; border-radius: 6px; background: #dcfce7; color: #16a34a; font-size: 13px; display: grid; place-items: center; font-weight: 800; }
.report-mock { background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-lg); overflow: hidden; }
.report-mock .bar { height: 36px; background: var(--bg-soft); border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 7px; padding: 0 14px; }
.report-mock .dot { width: 11px; height: 11px; border-radius: 50%; }
.report-mock .body { padding: 26px; }
.mock-row { height: 12px; border-radius: 6px; background: #eef2ff; margin-bottom: 12px; }
.mock-row.w60 { width: 60%; } .mock-row.w85 { width: 85%; } .mock-row.w40 { width: 40%; }
.mock-score { display: flex; gap: 14px; margin-top: 18px; }
.mock-chip { flex: 1; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px; text-align: center; }
.mock-chip b { display: block; font-size: 22px; color: var(--primary); }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 14px; margin-bottom: 14px; padding: 22px 26px; }
.faq details[open] { border-color: #c7d2fe; box-shadow: var(--shadow); }
.faq summary { font-weight: 700; font-size: 16.5px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::after { content: "+"; font-size: 22px; color: var(--primary); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin-top: 12px; color: var(--muted); font-size: 15px; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--grad); border-radius: 24px; padding: 72px 48px; text-align: center; color: #fff; box-shadow: var(--shadow-lg); }
.cta-band h2 { font-size: 34px; margin-bottom: 14px; letter-spacing: -.5px; }
.cta-band p { opacity: .9; margin-bottom: 30px; font-size: 17px; }
.cta-band .btn { background: #fff; color: var(--primary); }

/* ---------- 表单 ---------- */
.form-wrap { max-width: 620px; margin: 0 auto; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 44px; box-shadow: var(--shadow-lg); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; color: var(--ink-soft); }
.field input, .field textarea, .field select { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; font-family: inherit; background: var(--bg-soft); transition: .2s; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
.field textarea { min-height: 110px; resize: vertical; }
.form-note { text-align: center; color: var(--muted); font-size: 13.5px; margin-top: 16px; }
.form-ok { display: none; text-align: center; padding: 30px 0; }
.form-ok .big { font-size: 44px; }

/* ---------- 页脚 ---------- */
footer { background: #0f172a; color: #94a3b8; padding: 64px 0 32px; margin-top: 96px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.foot-grid h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.foot-grid a { display: block; font-size: 14px; padding: 5px 0; }
.foot-grid a:hover { color: #fff; }
.foot-brand p { font-size: 14px; margin-top: 12px; line-height: 1.8; }
.foot-bottom { border-top: 1px solid #1e293b; padding-top: 24px; font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 内页 hero ---------- */
.page-hero { padding: 150px 0 70px; text-align: center; background: linear-gradient(180deg, #eef2ff 0%, #fff 100%); }
.page-hero h1 { font-size: 44px; font-weight: 800; letter-spacing: -1px; margin-bottom: 16px; }
.page-hero p { color: var(--muted); font-size: 18px; max-width: 680px; margin: 0 auto; }

/* ---------- 详情分块 ---------- */
.feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; margin-bottom: 84px; }
.feature-block:last-child { margin-bottom: 0; }
.feature-block.flip .fb-text { order: 2; }
.fb-text .sec-tag { margin-bottom: 12px; }
.fb-text h3 { font-size: 28px; margin-bottom: 14px; letter-spacing: -.5px; }
.fb-text > p { color: var(--muted); margin-bottom: 20px; }
.fb-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 32px; box-shadow: var(--shadow); }
.fb-card .row { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.fb-card .row:last-child { border-bottom: none; }
.fb-card .row .k { color: var(--primary); font-weight: 700; min-width: 108px; }
.fb-card .row .v { color: var(--ink-soft); }

/* ---------- 定价引导卡（partner） ---------- */
.price-tease { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 48px 0; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 36px 30px; text-align: center; transition: .25s; }
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.price-card.hot { border-color: var(--primary); position: relative; box-shadow: var(--shadow); }
.price-card .badge { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--grad); color: #fff; font-size: 12.5px; padding: 4px 14px; border-radius: 999px; font-weight: 700; }
.price-card h3 { font-size: 19px; margin-bottom: 8px; }
.price-card .desc { color: var(--muted); font-size: 14.5px; margin-bottom: 18px; }
.price-card .mode { font-size: 26px; font-weight: 800; color: var(--primary); margin-bottom: 18px; }
.price-card ul { list-style: none; text-align: left; margin-bottom: 24px; }
.price-card ul li { padding: 6px 0 6px 26px; position: relative; font-size: 14.5px; color: var(--ink-soft); }
.price-card ul li::before { content: "•"; position: absolute; left: 8px; color: var(--primary); font-weight: 800; }

/* ---------- 博客列表 ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.blog-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; transition: .25s; }
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.blog-card .cat { font-size: 12.5px; font-weight: 700; color: var(--primary); background: #eef2ff; display: inline-block; padding: 3px 12px; border-radius: 999px; margin-bottom: 14px; }
.blog-card h3 { font-size: 18px; margin-bottom: 10px; line-height: 1.5; }
.blog-card p { color: var(--muted); font-size: 14.5px; margin-bottom: 16px; }
.blog-card .meta { font-size: 13px; color: #94a3b8; }

/* ---------- 金句精选块 ---------- */
.featured-quotes { padding: 96px 0; background: var(--bg-soft); border-top: 1px solid var(--line); }
.fq-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.fq-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; transition: .25s; display: flex; flex-direction: column; }
.fq-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c7d2fe; }
.fq-num { font-size: 13px; font-weight: 800; color: var(--primary); letter-spacing: .1em; margin-bottom: 12px; }
.fq-card blockquote { font-size: 17px; font-weight: 700; color: var(--ink); line-height: 1.55; margin-bottom: 14px; flex: 1; }
.fq-theme { font-size: 12.5px; color: var(--muted); }
.fq-cta { text-align: center; margin-top: 38px; }
@media (max-width: 960px) { .fq-grid { grid-template-columns: 1fr; } }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero h1 { font-size: 36px; }
  .hero { padding: 140px 0 80px; }
  .pain-grid, .price-tease, .blog-grid, .report-show, .feature-block { grid-template-columns: 1fr; }
  .feature-block.flip .fb-text { order: 0; }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .module-grid .module-card:nth-child(7) { grid-column: span 2; }
  .flow, .stats-band { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .sec-head h2 { font-size: 30px; }
  .page-hero h1 { font-size: 34px; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 16px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-burger { display: block; }
  .nav-drop { width: 100%; }
  .nav-drop-btn { width: 100%; padding: 12px 4px; border-radius: 8px; justify-content: space-between; }
  .nav-drop-menu { position: static; transform: none; opacity: 1; visibility: visible; border: none; box-shadow: none; padding: 0 0 0 14px; min-width: 0; display: none; }
  .nav-drop-menu::before { display: none; }
  .nav-drop.open .nav-drop-menu { display: flex; }
  .nav-drop-menu a { padding: 12px 4px; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-band, .stats-band { padding: 44px 26px; }
}

/* ---------- 研究院 ---------- */
.dean-card { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 44px; box-shadow: var(--shadow); }
.dean-avatar { width: 220px; height: 220px; border-radius: 50%; margin: 0 auto; background: var(--grad); color: #fff; display: grid; place-items: center; font-size: 84px; font-weight: 800; box-shadow: var(--shadow-lg); }
.dean-side { text-align: center; }
.dean-side h3 { font-size: 30px; letter-spacing: -.5px; margin-top: 22px; }
.dean-side .role { color: var(--primary); font-weight: 700; margin-top: 4px; }
.dean-info h3 { font-size: 26px; margin-bottom: 6px; }
.dean-info .role { color: var(--primary); font-weight: 700; margin-bottom: 16px; }
.dean-info p { color: var(--muted); font-size: 15.5px; margin-bottom: 14px; }
.dean-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 22px; }
.dean-stat { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px 8px; text-align: center; }
.dean-stat b { display: block; font-size: 24px; color: var(--primary); }
.dean-stat span { font-size: 12.5px; color: var(--muted); }
.field-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.field-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; transition: .25s; }
.field-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.field-card .icon { width: 50px; height: 50px; border-radius: 12px; background: #eef2ff; display: grid; place-items: center; font-size: 24px; margin-bottom: 16px; }
.field-card h3 { font-size: 17.5px; margin-bottom: 8px; }
.field-card p { color: var(--muted); font-size: 14px; }
.field-card .years { display: inline-block; margin-top: 12px; font-size: 12.5px; font-weight: 700; color: var(--primary); background: #eef2ff; padding: 3px 12px; border-radius: 999px; }
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 36px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 3px; border-radius: 3px; background: linear-gradient(180deg, #4f46e5, #7c3aed, #0ea5e9); }
.tl-item { position: relative; padding: 0 0 34px 22px; }
.tl-item::before { content: ""; position: absolute; left: -34px; top: 7px; width: 15px; height: 15px; border-radius: 50%; background: #fff; border: 4px solid var(--primary); box-shadow: 0 0 0 4px #eef2ff; }
.tl-item .year { font-size: 13px; font-weight: 800; color: var(--primary); letter-spacing: 1px; }
.tl-item h3 { font-size: 18px; margin: 4px 0 6px; }
.tl-item p { color: var(--muted); font-size: 14.5px; }
.cred-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.cred-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; }
.cred-card h3 { font-size: 18px; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.cred-card ul { list-style: none; }
.cred-card li { padding: 8px 0 8px 24px; position: relative; font-size: 14.5px; color: var(--ink-soft); border-bottom: 1px dashed var(--line); }
.cred-card li:last-child { border-bottom: none; }
.cred-card li::before { content: "◆"; position: absolute; left: 0; color: var(--primary); font-size: 11px; top: 12px; }
@media (max-width: 960px) {
  .dean-card { grid-template-columns: 1fr; padding: 30px 22px; }
  .dean-avatar { width: 150px; height: 150px; font-size: 56px; }
  .field-grid, .cred-grid { grid-template-columns: 1fr; }
  .dean-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- 博客文章页 ---------- */
.kb-meta { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 20px; font-size: 14px; color: var(--muted); }
.kb-meta .kb-dot { color: #cbd5e1; }
.kb-meta .kb-cat { font-weight: 700; color: var(--primary); background: #eef2ff; border-radius: 999px; padding: 3px 12px; font-size: 12.5px; }
.kb-layout { display: grid; grid-template-columns: minmax(0, 1fr) 288px; gap: 56px; align-items: start; }

.kb-prose { font-size: 16.5px; color: var(--ink-soft); }
.kb-prose > *:first-child { margin-top: 0; }
.kb-prose h2 { font-size: 27px; font-weight: 800; letter-spacing: -.4px; color: var(--ink); margin: 52px 0 16px; padding-left: 16px; border-left: 4px solid var(--primary); line-height: 1.4; }
.kb-prose h3 { font-size: 19.5px; font-weight: 700; color: var(--ink); margin: 34px 0 12px; }
.kb-prose p { margin-bottom: 18px; }
.kb-prose .kb-lead { font-size: 18px; color: var(--ink); background: var(--bg-soft); border-left: 4px solid #c7d2fe; border-radius: 0 12px 12px 0; padding: 20px 24px; margin-bottom: 34px; }
.kb-prose strong { color: var(--ink); font-weight: 700; }
.kb-prose ul, .kb-prose ol { margin: 0 0 20px 0; padding-left: 4px; list-style: none; }
.kb-prose ol { counter-reset: kbstep; }
.kb-prose ul li { position: relative; padding: 5px 0 5px 24px; }
.kb-prose ul li::before { content: ""; position: absolute; left: 4px; top: 14px; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.kb-prose ol li { position: relative; padding: 7px 0 7px 38px; counter-increment: kbstep; }
.kb-prose ol li::before { content: counter(kbstep); position: absolute; left: 0; top: 8px; width: 24px; height: 24px; border-radius: 7px; background: #eef2ff; color: var(--primary); font-size: 13px; font-weight: 800; display: grid; place-items: center; }
.kb-prose a { color: var(--primary); border-bottom: 1px solid #c7d2fe; }
.kb-prose code { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; font-size: 14.5px; color: var(--violet); }

.kb-prose table { width: 100%; border-collapse: collapse; margin: 22px 0 26px; font-size: 15px; display: block; overflow-x: auto; }
.kb-prose thead th { background: var(--bg-soft); font-weight: 700; color: var(--ink); text-align: left; }
.kb-prose th, .kb-prose td { border: 1px solid var(--line); padding: 11px 14px; vertical-align: top; }
.kb-prose tbody tr:nth-child(even) { background: #fcfdff; }
.kb-prose blockquote { background: var(--bg-soft); border-left: 4px solid var(--primary); border-radius: 0 12px 12px 0; padding: 16px 22px; margin: 24px 0; color: var(--ink); }
.kb-prose blockquote p { margin-bottom: 10px; }
.kb-prose blockquote p:last-child { margin-bottom: 0; }
.kb-prose pre { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; margin: 22px 0 26px; overflow-x: auto; font-size: 13.5px; line-height: 1.6; color: var(--ink); }
.kb-prose pre code { background: none; border: 0; padding: 0; font-size: inherit; color: inherit; }
.kb-prose hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }

.kb-note { background: #fffbeb; border: 1px solid #fde68a; border-left: 4px solid #f59e0b; border-radius: 0 12px 12px 0; padding: 18px 22px; margin: 24px 0; font-size: 15.5px; color: #78350f; }
.kb-note b { color: #92400e; }
.kb-warn { background: #fef2f2; border-color: #fecaca; border-left-color: #dc2626; color: #7f1d1d; }
.kb-warn b { color: #991b1b; }
.kb-ok { background: #f0fdf4; border-color: #bbf7d0; border-left-color: #16a34a; color: #14532d; }
.kb-ok b { color: #166534; }

.kb-side { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 22px; }
.kb-toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 14px; padding: 22px 22px 12px; }
.kb-toc h5 { font-size: 13px; letter-spacing: 1px; color: var(--muted); text-transform: uppercase; margin-bottom: 12px; }
.kb-toc a { display: block; font-size: 14.5px; color: var(--ink-soft); padding: 7px 0; border-bottom: 1px dashed var(--line); }
.kb-toc a:last-child { border-bottom: none; }
.kb-toc a:hover { color: var(--primary); }
.kb-side-cta { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 24px; box-shadow: var(--shadow); }
.kb-side-cta h5 { font-size: 16px; margin-bottom: 8px; }
.kb-side-cta p { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.kb-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--line); }
.kb-foot .back { font-size: 15px; color: var(--muted); font-weight: 600; }
.kb-foot .back:hover { color: var(--primary); }

@media (max-width: 960px) {
  .kb-layout { grid-template-columns: 1fr; gap: 34px; }
  .kb-side { position: static; }
  .kb-prose h2 { font-size: 23px; margin-top: 40px; }
  .kb-prose { font-size: 16px; }
  .kb-foot { flex-direction: column; align-items: stretch; text-align: center; }
}

/* ---------- 智能体矩阵（按工作流阶段编排） ---------- */
.nav-links a.active { color: var(--primary); font-weight: 700; }

.agent-chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 940px; margin: 0 auto; }
.agent-chip { display: inline-flex; align-items: center; gap: 7px; padding: 7px 16px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--ink-soft); transition: .2s; }
.agent-chip:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.agent-chip .n { font-size: 12px; color: #94a3b8; font-variant-numeric: tabular-nums; }

.agent-section { padding: 72px 0; }
.agent-section.alt { background: var(--bg-soft); }
.stage-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.stage-badge { color: #fff; font-size: 14px; font-weight: 800; letter-spacing: 1px; padding: 6px 16px; border-radius: 10px; box-shadow: var(--shadow); }
.stage-head h2 { font-size: 26px; letter-spacing: -.4px; }
.stage-head h2 .en { font-size: 13px; color: var(--muted); font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; vertical-align: middle; }
.stage-head .cnt { margin-left: auto; font-size: 13.5px; color: var(--muted); }
.stage-head p { flex-basis: 100%; color: var(--muted); font-size: 15px; margin-top: 2px; }
.sb-discover { background: #0891b2; } .sb-research { background: #0d9488; }
.sb-diagnose { background: #7c3aed; } .sb-plan { background: #2563eb; }
.sb-produce { background: #4f46e5; } .sb-adapt { background: #9333ea; }
.sb-distribute { background: #db2777; } .sb-expert { background: #4338ca; }
.sb-system { background: #64748b; }

.agent-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.agent-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px; position: relative; transition: .25s; }
.agent-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c7d2fe; }
.agent-ico { width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(135deg, #eef3ff, #f7f9ff); display: grid; place-items: center; margin-bottom: 14px; }
.agent-ico svg { width: 34px; height: 34px; }
.agent-no { position: absolute; top: 16px; right: 18px; font-size: 12px; font-weight: 800; color: #c7d2fe; font-variant-numeric: tabular-nums; }
.agent-name { font-size: 16px; font-weight: 700; margin-bottom: 3px; }
.agent-key { font-size: 11.5px; color: #94a3b8; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; margin-bottom: 10px; word-break: break-all; }
.agent-family { display: inline-block; font-size: 11.5px; font-weight: 700; padding: 2px 10px; border-radius: 999px; margin-bottom: 10px; }
.fam-report { background: #eef2f7; color: #475569; }
.fam-content { background: #f0fdf4; color: #15803d; }
.fam-research { background: #ecfeff; color: #0e7490; }
.fam-geo { background: #eef2ff; color: var(--primary); }
.fam-system { background: #fffbeb; color: #b45309; }
.agent-desc { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

@media (max-width: 1100px) { .agent-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 960px) {
  .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .stage-head .cnt { margin-left: 0; }
  .agent-section { padding: 54px 0; }
}
@media (max-width: 560px) { .agent-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   交互与无障碍补强（2026-09-18 走查整改）
   此前缺口：全站无 :focus-visible（键盘用户看不到焦点）、无 prefers-reduced-motion
   （数字滚动照跑）、汉堡按钮点击区仅 24px 字形、移动菜单无高度上限。
   ========================================================================== */

/* 1) 键盘焦点可见。原先只有 .field input:focus 且带 outline:none，
      全站按钮/链接键盘聚焦时没有任何视觉反馈。 */
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; border-radius: 6px; }
.btn:focus-visible, .nav-cta:focus-visible, .nav-burger:focus-visible { outline-offset: 4px; }

/* 2) 移动端点击反馈：iOS/Android 默认给被点元素整块灰闪，改为品牌色浅底。 */
html { -webkit-tap-highlight-color: rgba(79, 70, 229, .12); }

/* 3) 触控目标下限：汉堡按钮此前只有 24px 字形、border/background 均为 none，
      可点区域远小于 44px 最小值。 */
.nav-burger {
  display: none; width: 44px; height: 44px; border-radius: 10px;
  align-items: center; justify-content: center; line-height: 1; font-size: 22px;
  color: var(--ink); background: none; border: none; cursor: pointer;
  transition: background .2s;
}
.nav-burger:active { background: #eef2ff; }

/* 4) 移动菜单：加高度上限可滚动（矮屏此前会把最后一项挤出可视区），
      并把文字链接做成整行可点的触控目标；CTA 保持独立按钮观感。 */
@media (max-width: 960px) {
  .nav-burger { display: inline-flex; }
  .nav-links { max-height: calc(100vh - 68px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
  .nav-links a:not(.nav-cta) { display: block; padding: 12px 4px; border-radius: 8px; }
  .nav-links a:not(.nav-cta):active { color: var(--primary); background: #f8fafc; }
  .nav-links .nav-cta { display: block; text-align: center; padding: 13px 20px; }
  .foot-grid a { min-height: 44px; display: flex; align-items: center; padding: 6px 0; }
}

/* 5) 尊重系统「减少动态效果」：本页动效来源是数字滚动 + hover 位移。 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .btn-primary:hover, .pain-card:hover, .module-card:hover, .field-card:hover,
  .blog-card:hover, .agent-card:hover, .cred-card:hover { transform: none !important; }
}

/* 6) hero / CTA 的权益说明行：把「注册赠 1000 积分 · 标准版 80 积分/次」
      放在用户点按钮的同一屏内，避免官网承诺与落地页收费之间出现落差。 */
.hero-offer { margin: 22px auto 0; font-size: 15px; color: var(--muted); }
.hero-offer b { color: var(--primary); font-weight: 700; }
.cta-note { margin-top: 16px; font-size: 14.5px; opacity: .92; }
@media (max-width: 560px) { .hero-offer { font-size: 13.5px; line-height: 1.7; } }