/* ============================================================
   ama AI卖货商城 — 上海寓策信息技术有限公司 官网共享样式
   风格：大品牌极简 / 大量留白 / ama 蓝紫渐变 / 细腻微动效
   ============================================================ */

:root {
  --brand: #2563EB;
  --brand-deep: #1E3A8A;
  --brand-purple: #7C3AED;
  --brand-gradient: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
  --brand-soft: #eef3ff;
  --ink: #0d1526;
  --ink-2: #3d4657;
  --ink-3: #7a8499;
  --line: #e8ecf3;
  --bg: #ffffff;
  --bg-soft: #f7f9fc;
  --bg-dark: #0b1220;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 8px 30px rgba(13, 21, 38, .06);
  --shadow-lg: 0 20px 60px rgba(13, 21, 38, .10);
  --maxw: 1180px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Helvetica Neue", Arial, 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;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.section { padding: 104px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--bg-dark); color: #e8edf7; }

/* ---------- 通用排版 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .18em;
  color: var(--brand); text-transform: uppercase; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--brand); border-radius: 2px; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; letter-spacing: -.01em; }
.h-xl { font-size: clamp(42px, 5.6vw, 64px); }
.h-lg { font-size: clamp(32px, 4vw, 48px); }
.h-md { font-size: 24px; }
.lead { font-size: 19px; color: var(--ink-2); max-width: 640px; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .lead { margin: 14px auto 0; }
.section-head .lead { margin-top: 14px; }
.text-brand { color: var(--brand); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 16px 32px; border-radius: 999px; font-size: 16px; font-weight: 600;
  transition: all .25s ease; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 10px 24px rgba(37, 99, 235, .28); }
.btn-primary:hover { background: var(--brand-deep); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(37, 99, 235, .34); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-sm { padding: 10px 22px; font-size: 14px; }

/* ---------- 导航 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255, 255, 255, .82); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .3s, box-shadow .3s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 4px 20px rgba(13,21,38,.05); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; letter-spacing: -.01em; }
.logo img { width: 34px; height: 34px; object-fit: contain; }
.logo .logo-word { line-height: 1.05; }
.logo small { font-size: 11px; font-weight: 500; color: var(--ink-3); letter-spacing: .18em; display: block; line-height: 1.1; margin-top: 3px; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { font-size: 16px; font-weight: 500; color: var(--ink-2); position: relative; padding: 6px 0; transition: color .2s; white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--brand); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 50%; bottom: -4px; transform: translateX(-50%);
  width: 16px; height: 2.5px; border-radius: 2px; background: var(--brand);
}
.nav-links a.nav-ext { font-size: 14px; color: var(--ink-3); }
.nav-links a.nav-ext:hover { color: var(--brand); }
.btn-outline {
  display: inline-block; padding: 9px 20px; border: 1.5px solid var(--line); border-radius: 100px;
  font-size: 13px; font-weight: 500; color: var(--ink-2); background: transparent; transition: all .25s;
}
.btn-outline:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-soft); }
.nav-toggle { display: none; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px auto; border-radius: 2px; transition: .25s; }

/* ---------- Hero ---------- */
.hero { padding: 176px 0 110px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -260px; right: -180px; width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(30,79,216,.10), transparent 65%); border-radius: 50%;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; position: relative; }
.hero h1 { margin: 18px 0 22px; }
.hero .lead { margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 40px; margin-top: 56px; flex-wrap: wrap; }
.hero-trust .num { font-size: 30px; font-weight: 800; color: var(--ink); }
.hero-trust .num span { color: var(--brand); }
.hero-trust .lbl { font-size: 13px; color: var(--ink-3); margin-top: 2px; }
.hero-visual {
  background: linear-gradient(160deg, #1E3A8A, #2563EB 70%, #7C3AED 140%);
  border-radius: var(--radius-lg); padding: 34px; color: #fff; box-shadow: var(--shadow-lg);
  position: relative;
}
.hero-visual .dash-head { display: flex; align-items: center; gap: 8px; margin-bottom: 22px; opacity: .8; font-size: 13px; }
.hero-visual .dot { width: 9px; height: 9px; border-radius: 50%; }
.kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 14px; }
.kpi { background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.12); border-radius: 12px; padding: 14px; }
.kpi b { display: block; font-size: 20px; }
.kpi i { font-style: normal; font-size: 11.5px; opacity: .72; }
.chart { background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.12); border-radius: 12px; padding: 18px 16px 10px; }
.chart svg { width: 100%; height: auto; display: block; }
.chart-cap { font-size: 11.5px; opacity: .7; padding: 8px 4px 6px; display: flex; justify-content: space-between; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; transition: all .3s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card .icon {
  width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand); margin-bottom: 20px;
}
.card .icon img { width: 28px; height: 28px; object-fit: contain; }
.card h3 { font-size: 22px; margin-bottom: 10px; }
.card p { font-size: 16px; color: var(--ink-2); }
.card .tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag { font-size: 12.5px; color: var(--ink-2); background: var(--bg-soft); border: 1px solid var(--line); padding: 4px 12px; border-radius: 999px; }

/* ---------- 功能清单 ---------- */
.feature-list li { display: flex; gap: 12px; align-items: flex-start; padding: 9px 0; font-size: 16px; color: var(--ink-2); }
.feature-list li::before {
  content: ""; flex: none; width: 18px; height: 18px; margin-top: 4px; border-radius: 50%;
  background: var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/10px no-repeat;
}

/* ---------- 对比表 ---------- */
.compare { width: 100%; border-collapse: separate; border-spacing: 0; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.compare th, .compare td { padding: 22px 26px; text-align: left; font-size: 15.5px; border-bottom: 1px solid var(--line); }
.compare thead th { background: var(--bg-dark); color: #fff; font-size: 16px; }
.compare thead th:first-child { width: 150px; color: #9fb0d0; font-weight: 500; }
.compare tbody th { font-weight: 600; color: var(--ink); background: var(--bg-soft); }
.compare td.good { color: var(--ink); }
.compare td.good b { color: var(--brand); }
.compare td.bad { color: var(--ink-3); }
.compare tr:last-child th, .compare tr:last-child td { border-bottom: 0; }

/* ---------- 数据带 ---------- */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats-band .num { font-size: clamp(34px, 4vw, 50px); font-weight: 800; }
.stats-band .num span { color: #6f93ff; }
.stats-band .lbl { font-size: 15px; color: #93a1bd; margin-top: 6px; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 30px 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; counter-increment: step; transition: all .3s; }
.step:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.step::before {
  content: "0" counter(step); display: block; font-size: 14px; font-weight: 800; letter-spacing: .14em;
  color: var(--brand); margin-bottom: 14px;
}
.step h3 { font-size: 18px; margin-bottom: 10px; }
.step p { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 案例 ---------- */
.case-card { overflow: hidden; padding: 0; display: flex; flex-direction: column; }
.case-cover {
  height: 168px; display: flex; align-items: flex-end; padding: 22px; color: #fff;
  font-weight: 700; font-size: 20px; position: relative; overflow: hidden;
}
.case-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case-cover > div { position: relative; z-index: 1; }
.case-cover small { display: block; font-size: 12px; font-weight: 500; opacity: .85; margin-bottom: 4px; letter-spacing: .08em; }
.case-body { padding: 26px 26px 30px; }
.case-body p { font-size: 15px; color: var(--ink-2); margin-bottom: 18px; }
.case-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; border-top: 1px solid var(--line); padding-top: 18px; }
.case-metrics b { display: block; font-size: 21px; color: var(--brand); }
.case-metrics i { font-style: normal; font-size: 13px; color: var(--ink-3); }

/* 品牌墙 */
.brand-wall { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.brand-item {
  padding: 10px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--ink-2);
  font-weight: 500;
  transition: all .2s;
}
.brand-item:hover { border-color: var(--brand); color: var(--brand); box-shadow: var(--shadow); }

/* 案例小卡片网格 */
.case-mini-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.case-mini {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; transition: all .2s; cursor: default;
}
.case-mini:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-2px); }
.case-mini .cat-tag {
  display: inline-block; font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: 100px; margin-bottom: 10px;
}
.case-mini h4 { font-size: 15px; margin-bottom: 6px; }
.case-mini .meta { font-size: 12px; color: var(--ink-3); display: flex; gap: 12px; }

/* 分类标题 */
.cat-title {
  font-size: 20px; font-weight: 700; margin-bottom: 20px;
  display: flex; align-items: center; gap: 10px;
}
.cat-title::before {
  content: ''; width: 4px; height: 22px; border-radius: 2px;
  background: var(--brand-gradient);
}

/* 统计横幅 */
.stats-hero {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 800px; margin: 0 auto;
}
.stats-hero .stat { text-align: center; padding: 24px; }
.stats-hero .stat b {
  display: block; font-size: 42px; font-weight: 800;
  background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.stats-hero .stat i { font-style: normal; color: var(--ink-2); font-size: 15px; }

/* ---------- FAQ ---------- */
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; margin-bottom: 14px; overflow: hidden; transition: box-shadow .3s; }
.faq-item.open { box-shadow: var(--shadow); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 24px 28px; background: none; border: 0; font: inherit; font-size: 17px; font-weight: 600;
  color: var(--ink); cursor: pointer; text-align: left;
}
.faq-q .chev { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--brand-soft); display: grid; place-items: center; transition: transform .3s; color: var(--brand); }
.faq-item.open .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a-inner { padding: 0 28px 26px; color: var(--ink-2); font-size: 16px; }

/* ---------- 博客 ---------- */
.post-card { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.post-cover { height: 150px; display: flex; align-items: center; padding: 24px; color: #fff; }
.post-cover span { font-size: 12.5px; font-weight: 600; letter-spacing: .14em; background: rgba(255,255,255,.16); padding: 6px 14px; border-radius: 999px; }
.post-body { padding: 26px; flex: 1; display: flex; flex-direction: column; }
.post-body time { font-size: 13px; color: var(--ink-3); }
.post-body h3 { font-size: 20px; margin: 8px 0 10px; }
.post-body h3 a:hover { color: var(--brand); }
.post-body p { font-size: 15.5px; color: var(--ink-2); flex: 1; }
.post-body .more { margin-top: 18px; font-size: 15px; font-weight: 600; color: var(--brand); }

.article { max-width: 780px; margin: 0 auto; }
.article h2 { font-size: 28px; margin: 44px 0 16px; }
.article h3 { font-size: 21px; margin: 30px 0 12px; }
.article p { color: var(--ink-2); margin-bottom: 16px; }
.article ul, .article ol { padding-left: 22px; color: var(--ink-2); margin-bottom: 16px; list-style: disc; }
.article ol { list-style: decimal; }
.article li { margin-bottom: 8px; }
.article-meta { display: flex; gap: 16px; color: var(--ink-3); font-size: 14px; margin: 16px 0 30px; }
.article blockquote {
  border-left: 3px solid var(--brand); background: var(--brand-soft);
  padding: 18px 22px; border-radius: 0 12px 12px 0; margin: 24px 0; color: var(--ink-2); font-size: 15px;
}
.article table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 15.5px; }
.article th, .article td { border: 1px solid var(--line); padding: 12px 16px; text-align: left; }
.article th { background: var(--bg-soft); }

/* ---------- 产品页全新用户叙事 ---------- */
.product-hero { padding: 154px 0 86px; background: linear-gradient(180deg, #f8faff 0%, #fff 100%); position: relative; overflow: hidden; }
.product-hero::before { content: ""; position: absolute; width: 560px; height: 560px; top: -280px; right: -160px; border-radius: 50%; background: radial-gradient(circle, rgba(37,99,235,.13), transparent 66%); }
.product-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; position: relative; }
.product-hero-copy h1 { margin: 18px 0 22px; }
.product-hero-copy .lead { margin-bottom: 30px; }
.product-proof-row { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 44px; }
.product-proof-row span { padding-left: 14px; border-left: 2px solid var(--brand); }
.product-proof-row b { display: block; font-size: 17px; }
.product-proof-row small { display: block; margin-top: 3px; color: var(--ink-3); font-size: 12px; }
.product-hero-visual { padding: 14px; border-radius: 20px; background: linear-gradient(145deg, #172554, #2563eb 58%, #7c3aed); box-shadow: 0 24px 70px rgba(37,99,235,.22); }
.product-screen-head { display: flex; align-items: center; gap: 6px; color: rgba(255,255,255,.7); font-size: 12px; padding: 5px 8px 13px; }
.product-screen-head i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.52); }
.product-screen-head span { margin-left: 8px; }
.product-hero-visual > img { width: 100%; border-radius: 10px; background: #fff; }
.product-screen-note { display: flex; justify-content: space-between; gap: 16px; padding: 14px 8px 3px; color: #fff; font-size: 13px; }
.product-screen-note span { opacity: .7; }
.problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.problem-card { min-height: 230px; padding: 26px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: all .25s; }
.problem-card:hover { transform: translateY(-5px); border-color: rgba(37,99,235,.35); box-shadow: var(--shadow-lg); }
.problem-no { display: block; color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .12em; margin-bottom: 22px; }
.problem-card h3 { font-size: 19px; margin-bottom: 10px; }
.problem-card p { font-size: 14px; color: var(--ink-2); line-height: 1.7; min-height: 72px; }
.problem-card b { color: var(--brand); font-size: 13px; }
.order-flow { display: flex; align-items: stretch; gap: 8px; }
.order-step { flex: 1; min-height: 138px; padding: 22px 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.order-step > span { display: block; color: var(--brand); font-size: 12px; font-weight: 800; margin-bottom: 16px; }
.order-step b { display: block; font-size: 17px; }
.order-step p { margin-top: 6px; color: var(--ink-3); font-size: 13px; line-height: 1.5; }
.order-arrow { align-self: center; color: #9aa8bf; font-size: 22px; padding: 0 2px; }
.result-strip { display: flex; gap: 14px; align-items: center; margin-top: 22px; padding: 18px 22px; border-radius: 10px; background: var(--brand-soft); color: var(--ink-2); font-size: 14px; }
.result-strip b { color: var(--brand); white-space: nowrap; }
.suite-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 18px; }
.suite-card { padding: 32px 28px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; min-height: 360px; transition: all .3s; }
.suite-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.suite-main { background: linear-gradient(145deg, #eff5ff, #fff); border-color: rgba(37,99,235,.2); }
.suite-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 13px; background: var(--brand-soft); margin-bottom: 22px; }
.suite-icon img { width: 27px; height: 27px; object-fit: contain; }
.suite-label { display: block; color: var(--brand); font-size: 11px; font-weight: 800; letter-spacing: .1em; margin-bottom: 12px; }
.suite-card h3 { font-size: 23px; margin-bottom: 13px; }
.suite-card p { color: var(--ink-2); font-size: 14.5px; line-height: 1.75; }
.suite-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.suite-tags span { padding: 4px 10px; border-radius: 99px; background: rgba(37,99,235,.08); color: var(--brand-deep); font-size: 12px; }
.suite-link { display: inline-block; margin-top: 25px; color: var(--brand); font-size: 13px; font-weight: 700; }
.product-detail-grid { display: grid; grid-template-columns: .94fr 1.06fr; gap: 68px; align-items: center; }
.detail-copy h2 { margin: 16px 0 20px; }
.detail-copy .lead { margin-bottom: 20px; }
.plain-check-list { margin: 18px 0 28px; }
.plain-check-list li { position: relative; padding: 12px 0 12px 30px; border-bottom: 1px solid var(--line); }
.plain-check-list li::before { content: "✓"; position: absolute; left: 0; top: 13px; color: var(--brand); font-weight: 800; }
.plain-check-list b, .plain-check-list span { display: block; }
.plain-check-list b { font-size: 15px; }
.plain-check-list span { margin-top: 3px; color: var(--ink-2); font-size: 13.5px; }
.detail-visual { min-width: 0; }
.visual-window { padding: 22px; border-radius: 18px; background: #f7f9fc; border: 1px solid var(--line); box-shadow: var(--shadow-lg); }
.visual-window-top { display: flex; justify-content: space-between; color: var(--ink-2); font-size: 13px; margin-bottom: 22px; }
.visual-window-top small { color: var(--ink-3); }
.visual-kpis { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.visual-kpis div { padding: 15px 12px; background: #fff; border-radius: 10px; border: 1px solid var(--line); }
.visual-kpis b { display: block; color: var(--brand); font-size: 19px; }
.visual-kpis small { color: var(--ink-3); font-size: 11px; }
.visual-bars { height: 190px; display: flex; align-items: end; gap: 14px; padding: 24px 18px 8px; margin-top: 15px; border-radius: 12px; background: #fff; border: 1px solid var(--line); }
.visual-bars i { flex: 1; border-radius: 5px 5px 0 0; background: linear-gradient(180deg, #7c3aed, #2563eb); min-height: 20px; }
.visual-bars i:nth-child(odd) { background: linear-gradient(180deg, #60a5fa, #2563eb); }
.visual-legend { display: flex; gap: 18px; color: var(--ink-3); font-size: 11px; margin-top: 11px; }
.visual-legend span { display: inline-flex; align-items: center; gap: 5px; }
.visual-legend i { width: 8px; height: 8px; border-radius: 2px; background: var(--brand); }
.visual-legend span:last-child i { background: var(--brand-purple); }
.mode-list { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin-top: 32px; padding: 18px 20px; border-radius: 12px; background: var(--bg-soft); }
.mode-list div { margin-right: auto; }
.mode-list b, .mode-list small { display: block; }
.mode-list b { font-size: 15px; }
.mode-list small { color: var(--ink-3); font-size: 12px; }
.mode-list > span { padding: 6px 11px; background: #fff; border: 1px solid var(--line); border-radius: 99px; color: var(--ink-2); font-size: 12px; }
.retail-flow { display: flex; align-items: center; gap: 12px; padding: 24px 22px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; }
.retail-flow > div { flex: 1; text-align: center; }
.retail-flow img { width: 29px; height: 29px; margin: 0 auto 10px; object-fit: contain; }
.retail-flow b, .retail-flow small { display: block; }
.retail-flow b { font-size: 14px; }
.retail-flow small { margin-top: 4px; color: var(--ink-3); font-size: 11px; }
.retail-flow em { font-style: normal; color: #a5b4ca; font-size: 19px; }
.capability-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-top: 18px; }
.capability-card { padding: 20px 16px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.capability-card b, .capability-card span { display: block; }
.capability-card b { color: var(--brand); font-size: 16px; }
.capability-card span { margin-top: 7px; color: var(--ink-2); font-size: 13px; }
.ai-flow-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.ai-flow-copy h2 { margin: 16px 0 20px; }
.ai-work-list { margin-top: 28px; }
.ai-work-list > div { display: flex; gap: 15px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.ai-work-list b { color: var(--brand); font-size: 12px; letter-spacing: .08em; }
.ai-work-list strong, .ai-work-list small { display: block; }
.ai-work-list strong { font-size: 15px; }
.ai-work-list small { margin-top: 4px; color: var(--ink-3); font-size: 13px; }
.ai-board { padding: 22px; border-radius: 18px; background: linear-gradient(145deg, #eef4ff, #fff); border: 1px solid rgba(37,99,235,.16); box-shadow: var(--shadow-lg); }
.ai-board-top { display: flex; justify-content: space-between; margin-bottom: 18px; color: var(--ink-2); font-size: 14px; }
.ai-board-top small { color: var(--ink-3); font-size: 11px; }
.ai-board-prompt { padding: 17px; border-radius: 11px; background: #fff; border: 1px solid var(--line); color: var(--ink-2); font-size: 13px; }
.ai-board-result { display: flex; align-items: center; gap: 10px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.ai-board-result span { padding: 3px 8px; border-radius: 99px; color: #087443; background: #e7f8ef; font-size: 11px; }
.ai-board-result b { font-size: 12px; }
.ai-board-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 12px; }
.ai-board-cards div { padding: 15px 11px; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.ai-board-cards img { width: 23px; height: 23px; margin-bottom: 10px; object-fit: contain; }
.ai-board-cards b, .ai-board-cards small { display: block; }
.ai-board-cards b { font-size: 13px; }
.ai-board-cards small { margin-top: 4px; color: var(--ink-3); font-size: 10px; }
.foundation-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.foundation-card { padding: 26px 20px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.foundation-card img { width: 28px; height: 28px; margin-bottom: 16px; object-fit: contain; }
.foundation-card b, .foundation-card span { display: block; }
.foundation-card b { font-size: 17px; }
.foundation-card span { margin-top: 8px; color: var(--ink-2); font-size: 13px; line-height: 1.65; }
.route-line { display: grid; grid-template-columns: 1fr 42px 1fr 42px 1fr; align-items: center; gap: 10px; }
.route-line > div { padding: 27px 23px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.route-line > div > span { color: var(--brand); font-size: 12px; font-weight: 800; }
.route-line b, .route-line p, .route-line strong { display: block; }
.route-line b { margin-top: 11px; font-size: 18px; }
.route-line p { margin-top: 7px; color: var(--ink-3); font-size: 13px; }
.route-line strong { margin-top: 18px; color: var(--brand); font-size: 17px; }
.route-line i { color: #9aa8bf; font-style: normal; text-align: center; font-size: 22px; }
.route-line .route-featured { border: 2px solid var(--brand); box-shadow: 0 12px 30px rgba(37,99,235,.12); }
.price-note { margin-top: 18px; padding: 16px 20px; border-radius: 10px; background: var(--bg-soft); color: var(--ink-3); text-align: center; font-size: 13px; }
.price-note a { margin-left: 10px; color: var(--brand); font-weight: 600; }
.compare-simple { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.compare-simple div { padding: 23px; border: 1px solid var(--line); border-radius: 13px; background: #fff; }
.compare-simple b, .compare-simple span { display: block; }
.compare-simple b { color: var(--brand); font-size: 14px; }
.compare-simple span { margin-top: 10px; color: var(--ink-2); font-size: 14px; line-height: 1.6; }

/* ---------- 产品矩阵（兼容旧入口样式） ---------- */
.product-matrix { padding-top: 34px; background: var(--bg-soft); }
.product-matrix-panel {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); overflow: hidden;
}
.product-matrix-label {
  padding: 18px 30px; font-size: 14px; color: var(--ink-2); font-weight: 700;
  border-bottom: 1px solid var(--line); letter-spacing: .08em;
}
.product-core-grid { display: grid; grid-template-columns: repeat(3, 1fr); padding: 24px 30px 18px; gap: 8px 18px; }
.product-core-item {
  display: flex; align-items: center; gap: 13px; padding: 14px 12px; border-radius: 12px;
  transition: background .2s, transform .2s; min-height: 70px;
}
.product-core-item:hover { background: var(--brand-soft); transform: translateY(-2px); }
.product-core-icon {
  width: 38px; height: 38px; border-radius: 10px; background: var(--brand-soft);
  display: grid; place-items: center; flex: none;
}
.product-core-icon img { width: 23px; height: 23px; object-fit: contain; }
.product-core-item b { display: block; font-size: 16px; line-height: 1.35; }
.product-core-item small { display: block; color: var(--ink-3); font-size: 12px; margin-top: 4px; line-height: 1.35; }
.product-mode-divider { height: 1px; background: var(--line); margin: 0 30px; }
.product-mode-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; padding: 28px 30px 30px; }
.product-mode-item {
  display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink-2);
  font-size: 14px; transition: all .2s;
}
.product-mode-item:hover { color: var(--brand); border-color: rgba(37,99,235,.35); background: var(--brand-soft); transform: translateY(-2px); }
.product-mode-item img { width: 22px; height: 22px; object-fit: contain; }

/* ---------- 页面头（内页） ---------- */
.page-hero { padding: 168px 0 88px; background: var(--bg-soft); position: relative; overflow: hidden; }
.page-hero::after {
  content: ""; position: absolute; bottom: -240px; left: -160px; width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(30,79,216,.08), transparent 65%); border-radius: 50%;
}
.page-hero .lead { margin-top: 16px; }
.breadcrumb { font-size: 13.5px; color: var(--ink-3); margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--brand); }

/* ---------- CTA ---------- */
.cta-band { background: linear-gradient(120deg, #1E3A8A, #2563EB 60%, #7C3AED 130%); border-radius: var(--radius-lg); padding: 72px 64px; color: #fff; text-align: center; }
.cta-band h2 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.82); max-width: 560px; margin: 0 auto 34px; font-size: 17px; }
.cta-band .hero-actions { justify-content: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--bg-dark); color: #93a1bd; padding: 72px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 52px; }
.footer-grid h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { margin-top: 16px; max-width: 300px; line-height: 1.8; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; color: #5d6b85; }

/* ---------- Hero 几何漂移动效 ---------- */
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.hero::before {
  top: -260px; right: -180px; width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(30,79,216,.10), transparent 65%);
  animation: heroFloat1 18s ease-in-out infinite;
}
.hero::after {
  bottom: -200px; left: -120px; width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(124,58,237,.08), transparent 65%);
  animation: heroFloat2 22s ease-in-out infinite;
}
.hero-float-shape {
  position: absolute; border-radius: 50%; pointer-events: none; opacity: .06;
}
.hero-float-shape.s1 {
  width: 120px; height: 120px; top: 20%; left: 5%;
  background: var(--brand); animation: floatA 12s ease-in-out infinite;
}
.hero-float-shape.s2 {
  width: 80px; height: 80px; top: 60%; right: 8%;
  background: var(--brand-purple); animation: floatB 15s ease-in-out infinite;
}
.hero-float-shape.s3 {
  width: 50px; height: 50px; top: 40%; left: 15%;
  background: var(--brand); animation: floatC 10s ease-in-out infinite;
}
@keyframes heroFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 20px) scale(1.05); }
}
@keyframes heroFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -25px) scale(1.08); }
}
@keyframes floatA {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(15px, -20px); }
  66% { transform: translate(-10px, 15px); }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-20px, 10px) rotate(180deg); }
}
@keyframes floatC {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(12px, -18px) scale(1.2); }
}

/* ---------- 客户评价 ---------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; transition: all .3s; }
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.testimonial-stars { display: flex; gap: 3px; margin-bottom: 16px; color: #f59e0b; font-size: 16px; }
.testimonial-text { font-size: 15px; color: var(--ink-2); line-height: 1.75; margin-bottom: 20px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--brand-soft); display: grid; place-items: center; font-size: 18px; font-weight: 700; color: var(--brand); flex-shrink: 0; overflow: hidden; }
.testimonial-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.testimonial-name { font-size: 15px; font-weight: 600; color: var(--ink); }
.testimonial-role { font-size: 13px; color: var(--ink-3); margin-top: 2px; }
.testimonial-logo-wall { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: center; margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--line); }
.partner-logo { height: 36px; opacity: .55; transition: opacity .2s; filter: grayscale(100%); }
.partner-logo:hover { opacity: 1; filter: grayscale(0%); }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; } .reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; } .reveal-d4 { transition-delay: .32s; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 560px; }
  .product-hero-grid, .product-detail-grid, .ai-flow-layout { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .suite-grid { grid-template-columns: 1fr 1fr; }
  .suite-main { grid-column: 1 / -1; }
  .capability-grid, .foundation-grid { grid-template-columns: repeat(2, 1fr); }
  .product-core-grid { grid-template-columns: repeat(2, 1fr); }
  .product-mode-grid { grid-template-columns: repeat(3, 1fr); }
  .route-line { grid-template-columns: 1fr; }
  .route-line i { transform: rotate(90deg); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .compare-wrap { overflow-x: auto; }
  .compare { min-width: 720px; }
}
@media (max-width: 640px) {
  .section { padding: 72px 0; }
  .hero { padding: 140px 0 72px; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0; background: #fff; flex-direction: column;
    padding: 26px 28px 34px; gap: 20px; border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform .3s ease; align-items: flex-start;
  }
  .nav-links.open { transform: none; box-shadow: var(--shadow-lg); }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .product-hero { padding: 130px 0 64px; }
  .product-proof-row { gap: 18px; margin-top: 34px; }
  .product-screen-note { flex-direction: column; gap: 3px; }
  .problem-grid, .suite-grid, .capability-grid, .foundation-grid { grid-template-columns: 1fr; }
  .suite-main { grid-column: auto; }
  .problem-card { min-height: 0; }
  .order-flow { flex-direction: column; }
  .order-arrow { transform: rotate(90deg); align-self: center; }
  .result-strip { display: block; }
  .result-strip span { display: block; margin-top: 6px; }
  .retail-flow { flex-direction: column; gap: 8px; }
  .retail-flow em { transform: rotate(90deg); }
  .ai-board-cards, .visual-kpis { grid-template-columns: 1fr; }
  .mode-list div { width: 100%; margin-bottom: 5px; }
  .mode-list { gap: 7px; }
  .product-matrix { padding-top: 20px; }
  .product-matrix-label { padding: 16px 20px; }
  .product-core-grid { grid-template-columns: 1fr; padding: 16px 20px 12px; gap: 0; }
  .product-mode-divider { margin: 0 20px; }
  .product-mode-grid { grid-template-columns: repeat(2, 1fr); padding: 20px; gap: 8px; }
  .product-mode-item { font-size: 13px; min-height: 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-band { padding: 52px 28px; }
  .kpi-row { grid-template-columns: 1fr 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
}

/* ---------- 咨询弹窗 ---------- */
.modal-overlay {
  display: none; position: fixed; inset: 0; z-index: 999;
  background: rgba(13,21,38,.55); backdrop-filter: blur(6px);
  align-items: center; justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal-content {
  background: #fff; border-radius: var(--radius-lg); padding: 48px 44px 36px;
  max-width: 420px; width: 92%; text-align: center; position: relative;
  box-shadow: 0 24px 80px rgba(13,21,38,.18); animation: modalIn .35s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(40px) scale(.95); }
  to { opacity: 1; transform: none; }
}
.modal-close {
  position: absolute; top: 16px; right: 20px;
  width: 36px; height: 36px; border: none; background: var(--bg-soft);
  border-radius: 50%; font-size: 20px; color: var(--ink-3); cursor: pointer;
  display: flex; align-items: center; justify-content: center; transition: .2s;
}
.modal-close:hover { background: var(--line); color: var(--ink); }
.modal-content h3 { font-size: 24px; font-weight: 800; margin-bottom: 12px; }
.modal-content .modal-sub { font-size: 14px; color: var(--ink-3); margin-bottom: 28px; line-height: 1.6; }
.modal-qr {
  width: 180px; height: 180px; margin: 0 auto 20px; border: 1px dashed var(--line);
  border-radius: 14px; overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.modal-qr img { width: 100%; height: 100%; object-fit: cover; }
.modal-phone { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.modal-phone-sub { font-size: 13px; color: var(--ink-3); }