/* ============================================================
   本名智能 BM.ai · 原型设计系统
   主色：明亮活跃蓝 #2563EB ｜ 极简留白 ｜ 高端 B 端
   ============================================================ */

:root {
  /* 品牌色（明亮活跃蓝，避免暗色压抑） */
  --c-primary: #2563EB;
  --c-primary-dark: #1D4ED8;
  --c-primary-mid: #3B82F6;
  --c-primary-soft: #E8F1FE;
  --c-primary-line: #BFD7FB;

  /* 中性色 */
  --c-ink: #16202E;
  --c-text: #2B3647;
  --c-text-2: #5A6678;
  --c-text-3: #8A94A6;
  --c-line: #E4E9F0;
  --c-line-soft: #EEF2F7;
  --c-bg: #FFFFFF;
  --c-bg-2: #F6F8FB;
  --c-bg-3: #F0F4F9;

  /* 语义色 */
  --c-teal: #0F6E56;
  --c-teal-soft: #E1F5EE;
  --c-amber: #B07A1E;

  /* 品牌渐变 */
  --grad-brand: linear-gradient(135deg, #2563EB 0%, #38BDF8 100%);

  /* 双产品线语义色：数字人智能体=蓝 / 数字分身=teal（全站统一） */
  --c-agent: var(--c-primary);   /* 数字人智能体 */
  --c-pro: var(--c-teal);        /* 数字分身 */

  /* 排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  /* 间距 / 圆角 */
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(16, 32, 56, 0.04), 0 2px 8px rgba(16, 32, 56, 0.04);
  --shadow-md: 0 6px 24px rgba(16, 32, 56, 0.08);
  --shadow-lg: 0 16px 48px rgba(16, 32, 56, 0.12);
  --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- 文字工具 ---------- */
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #2563EB;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: #2563EB;
  display: inline-block;
}
.h1 { font-size: 46px; line-height: 1.15; font-weight: 700; letter-spacing: -0.5px; color: var(--c-ink); }
.h2 { font-size: 34px; line-height: 1.25; font-weight: 700; letter-spacing: -0.3px; color: var(--c-ink); }
.h3 { font-size: 22px; line-height: 1.35; font-weight: 650; color: var(--c-ink); }
.lead { font-size: 18px; color: var(--c-text-2); line-height: 1.7; }
.muted { color: var(--c-text-2); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: 0 8px 22px rgba(37,99,235,0.28); }
.btn-primary:hover { background: linear-gradient(135deg, #1D4ED8, #3B82F6); transform: translateY(-1px); box-shadow: 0 12px 30px rgba(37,99,235,0.36); }
.btn-ghost { background: transparent; color: var(--c-primary); border-color: var(--c-primary-line); }
.btn-ghost:hover { background: var(--c-primary-soft); }
.btn-light { background: #fff; color: var(--c-primary); }
.btn-light:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--c-line);
}
.nav {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; color: var(--c-ink); font-size: 17px; }
.brand .logo {
  width: 36px; height: 36px;
  display: grid; place-items: center;
}
.brand .logo img { width: 100%; height: auto; display: block; }
.brand small { font-weight: 500; color: var(--c-text-2); font-size: 13px; letter-spacing: 0.04em; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14.5px;
  color: var(--c-text);
  font-weight: 500;
  transition: all 0.15s ease;
}
.nav-links a:hover { color: var(--c-primary); background: var(--c-bg-2); }
.nav-links a.active { color: var(--c-primary); background: var(--c-primary-soft); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--c-line); border-radius: 10px; background: #fff; cursor: pointer; padding: 0; align-items: center; justify-content: center; flex-direction: column; }
.nav-toggle .bar { display: block; width: 18px; height: 2px; background: var(--c-ink); border-radius: 2px; margin: 2px 0; }

/* ---------- 区块 ---------- */
section { padding: 96px 0; }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .h2 { margin: 16px 0 14px; }
.bg-soft { background: var(--c-bg-2); }
.bg-deep {
  background: linear-gradient(135deg, #2563EB 0%, #4F8FF7 100%);
  color: #fff;
}
.bg-deep .eyebrow { color: #9cc4f0; }
.bg-deep .eyebrow::before { background: #9cc4f0; }
.bg-deep .h2, .bg-deep .h3 { color: #fff; }
.bg-deep .muted, .bg-deep .lead { color: rgba(255,255,255,0.78); }

/* ---------- 卡片 ---------- */
.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.22s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--c-primary-line); }
.card .ico {
  width: 54px; height: 54px; border-radius: 14px;
  background: var(--c-primary-soft); color: var(--c-primary);
  display: grid; place-items: center; margin-bottom: 18px;
}
.card .ico svg { width: 28px; height: 28px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { color: var(--c-text-2); font-size: 14.5px; }

.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); }

/* 特性列表 */
.feature-list { list-style: none; margin-top: 8px; }
.feature-list li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 0; border-bottom: 1px solid var(--c-line-soft);
  font-size: 15px; color: var(--c-text);
}
.feature-list li:last-child { border-bottom: none; }
.feature-list .dot {
  flex: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--c-primary-soft); color: var(--c-primary);
  display: grid; place-items: center; margin-top: 2px;
}
.feature-list .dot svg { width: 12px; height: 12px; }

/* 标签 */
.tag {
  display: inline-block; font-size: 12.5px; font-weight: 600;
  padding: 4px 11px; border-radius: 999px;
  background: var(--c-primary-soft); color: var(--c-primary-mid);
}
.tag-teal { background: var(--c-teal-soft); color: var(--c-teal); }

/* 数据指标 */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.metric .num { font-size: 40px; font-weight: 750; color: var(--c-ink); letter-spacing: -1px; }
.metric .lbl { color: var(--c-text-2); font-size: 14px; margin-top: 4px; }

/* 页脚 */
.site-footer {
  background: linear-gradient(135deg, #1D4ED8 0%, #2563EB 100%);
  color: rgba(255,255,255,0.82);
  padding: 64px 0 32px;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.site-footer h4 { color: #fff; font-size: 14px; margin-bottom: 16px; font-weight: 600; }
.site-footer a { display: block; font-size: 14px; padding: 6px 0; color: rgba(255,255,255,0.66); }
.site-footer a:hover { color: #fff; }
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; max-width: 320px; line-height: 1.7; }
.footer-bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,0.12);
  display: flex; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,0.66);
}

/* 面包屑 / 子页头 */
.page-hero { padding: 72px 0 56px; background: var(--c-bg-2); border-bottom: 1px solid var(--c-line); }
.page-hero .h1 { font-size: 40px; margin: 14px 0 16px; }
.breadcrumb { font-size: 13px; color: var(--c-text-2); }
.breadcrumb a:hover { color: var(--c-primary); }

/* 表格（定价） */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card {
  border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 32px; background: #fff; position: relative; display: flex; flex-direction: column;
}
.price-card.featured { border-color: var(--c-primary); box-shadow: var(--shadow-md); }
.price-card .tier { font-size: 15px; font-weight: 650; color: var(--c-ink); }
.price-card .price { font-size: 40px; font-weight: 750; color: var(--c-ink); margin: 14px 0 4px; }
.price-card .price small { font-size: 15px; font-weight: 500; color: var(--c-text-3); }
.price-card .desc { color: var(--c-text-2); font-size: 14px; min-height: 44px; }
.price-card ul { list-style: none; margin: 22px 0 26px; flex: 1; }
.price-card li { display: flex; gap: 10px; padding: 9px 0; font-size: 14.5px; color: var(--c-text); border-bottom: 1px solid var(--c-line-soft); }
.price-card li svg { width: 17px; height: 17px; color: var(--c-teal); flex: none; margin-top: 3px; }

/* CTA 条 */
.cta-band {
  background: var(--grad-brand); color: #fff; border-radius: var(--radius-lg);
  padding: 52px; text-align: center; box-shadow: 0 16px 44px rgba(37,99,235,0.22);
}
.cta-band h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.8); margin-bottom: 26px; font-size: 16px; }

/* 案例卡 */
.case-card { overflow: hidden; }
.case-card .thumb { position: relative; aspect-ratio: 600 / 340; border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 18px; box-shadow: var(--shadow-md); }
.case-card .thumb img { width: 100%; height: 100%; display: block; object-fit: cover; }
.case-card .thumb::after { content: ''; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(160deg, rgba(255,255,255,0.14), rgba(255,255,255,0) 42%); pointer-events: none; }
.case-card .thumb.blue { background: linear-gradient(135deg, #2563EB, #3B82F6); }
.case-card .thumb.teal { background: linear-gradient(135deg, #0EA47A, #10B981); }
.case-card .thumb.amber { background: linear-gradient(135deg, #F59E0B, #FBBF24); }
.case-card .thumb span { color: #fff; font-size: 15px; font-weight: 600; }
.case-card h3 { font-size: 17px; margin-bottom: 6px; }
.case-card .result { font-size: 14px; color: var(--c-text-2); }
.case-card .result b { color: var(--c-primary); }

/* 三业务配色 */
.card.tone-blue .ico { background: var(--c-primary-soft); color: var(--c-primary-mid); }
.card.tone-teal .ico { background: var(--c-teal-soft); color: var(--c-teal); }
.card.tone-blue:hover { border-color: var(--c-primary-line); }

/* 角色分流落地卡 */
.role-card {
  display: block; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 32px; transition: all .22s ease;
  box-shadow: var(--shadow-sm); color: var(--c-ink);
}
/* 卡片嵌在 bg-deep 蓝底区块内，需重置内部文字颜色，避免白字落白底看不见 */
.role-card .h3 { color: var(--c-ink); }
.role-card .muted { color: var(--c-text-2); }
.role-card .role-hint { color: var(--c-text-2); }
.role-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--c-primary-line); }
.role-ico {
  width: 64px; height: 64px; border-radius: 16px;
  background: var(--c-primary-soft); color: var(--c-primary);
  display: grid; place-items: center; margin-bottom: 20px;
}
.role-ico svg { width: 34px; height: 34px; }
.role-ico-teal { background: var(--c-teal-soft); color: var(--c-teal); }
.role-tag { font-size: 13px; font-weight: 600; color: var(--c-primary-mid); letter-spacing: .02em; }
.role-go { display: inline-block; margin-top: 18px; font-weight: 600; color: var(--c-primary); }
.role-card:hover .role-go { text-decoration: underline; }
/* 重点推荐卡 = 数字分身（teal 语义色），保留视觉优先强调，与产品一览配色一致 */
.role-card-feature { border-color: var(--c-pro); background: linear-gradient(180deg, #fff 0%, var(--c-teal-soft) 100%); position: relative; }
.role-card-feature:hover { border-color: var(--c-teal); }
.role-card-feature .role-go { color: var(--c-teal); }
.role-hint { font-size: 13px; color: var(--c-text-2); margin-top: 14px; line-height: 1.65; }
.role-hint b { color: var(--c-text-2); font-weight: 600; }
/* 企业/组织卡 = 数字人智能体（blue 语义色），与数字分身 feature 卡视觉对等 */
.role-card-feature-blue { border-color: var(--c-primary-line); background: linear-gradient(180deg, #fff 0%, var(--c-primary-soft) 100%); position: relative; }
.role-card-feature-blue:hover { border-color: var(--c-primary); }
.role-card-feature-blue .role-go { color: var(--c-primary); }
/* 行业适配卡：纯文字 + 细描边，克制专业 */
.ind-card { text-align:left; padding:22px 22px; border:1px solid var(--c-line); }
.ind-card h3 { font-size:16px; margin-bottom:6px; }
.ind-card .muted { font-size:12.5px; line-height:1.55; }
/* 品牌 VI 融入示例 */
.vi-demo { margin-top:20px; padding:16px 18px; border:1px solid var(--c-line); border-radius:var(--radius); background:var(--c-bg-2); }
.vi-demo-title { font-size:13px; font-weight:600; color:var(--c-ink); margin-bottom:10px; }
.vi-swatches { display:flex; gap:8px; }
.vi-swatches span { width:32px; height:32px; border-radius:8px; display:block; }
.page-banner { margin: 0 auto 0; max-width:100%; border-radius: var(--radius-lg); overflow:hidden; box-shadow: var(--shadow-md); aspect-ratio: 1200 / 440; max-height: 320px; }
.page-banner img, .page-banner svg { width: 100%; height: 100%; object-fit: cover; display:block; }
.hero-portrait { width:100%; aspect-ratio: 832 / 1142; max-height: 460px; object-fit: cover; object-position: center 18%; display:block; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* 线索看板 mock 条形 */
.bar-track { flex: 1; height: 12px; background: var(--c-bg-3); border-radius: 999px; overflow: hidden; }
.bar-track > span { display: block; height: 100%; border-radius: 999px; }

/* 联系方式 · 商务名片 */
.contact-card {
  max-width: 640px; margin: 0 auto; background: #fff;
  border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); padding: 36px 40px;
}
.contact-advisor { display: flex; align-items: center; gap: 16px; }
.contact-avatar {
  width: 56px; height: 56px; border-radius: 16px; flex: none;
  background: var(--grad-brand); color: #fff;
  display: grid; place-items: center; font-size: 22px; font-weight: 700;
}
.contact-advisor-name { font-size: 19px; font-weight: 700; color: var(--c-ink); }
.contact-advisor-name span { font-size: 13px; font-weight: 500; color: var(--c-text-2); margin-left: 6px; }
.contact-advisor-role { font-size: 13.5px; color: var(--c-text-2); margin-top: 2px; }
.contact-divider { height: 1px; background: var(--c-line-soft); margin: 24px 0; }
.contact-methods { display: grid; gap: 14px; }
.contact-method {
  display: flex; align-items: center; gap: 14px;
  padding: 16px; border: 1px solid var(--c-line);
  border-radius: var(--radius); transition: all .18s ease;
}
.contact-method:hover { border-color: var(--c-primary-line); background: var(--c-bg-2); }
.contact-method-ico {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: var(--c-primary-soft); color: var(--c-primary);
  display: grid; place-items: center;
}
.contact-method-ico svg { width: 22px; height: 22px; }
.contact-method:nth-child(2) .contact-method-ico { background: var(--c-teal-soft); color: var(--c-teal); }
.contact-method-body { display: flex; flex-direction: column; }
.contact-method-label { font-size: 12.5px; color: var(--c-text-2); }
.contact-method-value { font-size: 16px; font-weight: 600; color: var(--c-ink); }
.contact-note { text-align: center; font-size: 13px; color: var(--c-text-2); margin-top: 22px; }

/* 职业快捷标签 */
.prof-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 18px 0 6px; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.prof-tags-label { font-size: 14px; font-weight: 600; color: var(--c-text-2); margin-right: 4px; }
.prof-tag { display: inline-block; padding: 7px 15px; font-size: 13.5px; font-weight: 500; color: var(--c-pro); background: var(--c-pro-soft); border: 1px solid transparent; border-radius: 999px; text-decoration: none; transition: all .18s ease; }
.prof-tag:hover { background: var(--c-pro); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }

/* 卡片内注释（伦理边界等） */
.card-note { font-size: 13px; color: var(--c-text-2); margin-top: 12px; padding: 10px 13px; background: var(--c-bg-2); border-left: 3px solid var(--c-pro); border-radius: 8px; line-height: 1.55; }

/* CTA 专属提示 */
.cta-hint { font-size: 14.5px; color: var(--c-text-2); margin: 14px auto 4px; max-width: 620px; }

/* ---------- 团队照片 ---------- */
.team-section { padding: 80px 0; }
.team-photo-wrap {
  max-width: 900px; margin: 0 auto;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid var(--c-line);
  background: #fff;
}
.team-photo-wrap img { width: 100%; display: block; }
.team-caption {
  text-align: center; margin-top: 18px; font-size: 15px;
  color: var(--c-text-2); font-style: italic;
}

/* ---------- 创始人介绍 ---------- */
.founder-section { padding: 80px 0; }
.founder-card {
  display: grid; grid-template-columns: 300px 1fr; gap: 48px;
  align-items: start; max-width: 960px; margin: 0 auto;
  background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius-lg); padding: 44px 48px;
  box-shadow: var(--shadow-md);
}
.founder-portrait-wrap {
  flex: none; width: 280px;
}
.founder-portrait {
  width: 100%; aspect-ratio: 3 / 4;
  object-fit: cover; border-radius: var(--radius);
  box-shadow: var(--shadow-md); display: block;
}
.founder-info { }
.founder-name-row { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.founder-name { font-size: 28px; font-weight: 700; color: var(--c-ink); letter-spacing: -0.3px; }
.founder-name-en { font-size: 16px; color: var(--c-text-2); font-weight: 500; }
.founder-tagline {
  margin-top: 8px; font-size: 17px; color: var(--c-primary);
  font-weight: 600; line-height: 1.6;
}
.founder-bio { margin-top: 20px; }
.founder-bio p { font-size: 14.5px; color: var(--c-text-2); line-height: 1.75; margin-bottom: 10px; }
.founder-bio b { color: var(--c-text); font-weight: 600; }
.founder-creds {
  margin-top: 20px; display: grid; gap: 12px;
}
.founder-cred-group h4 {
  font-size: 13.5px; font-weight: 650; color: var(--c-ink);
  margin-bottom: 6px; letter-spacing: .02em;
}
.founder-cred-group ul {
  list-style: none; display: flex; flex-wrap: wrap; gap: 8px;
}
.founder-cred-group li {
  display: inline-block; font-size: 13px; padding: 5px 12px;
  border-radius: 999px; background: var(--c-primary-soft);
  color: var(--c-primary-mid); font-weight: 500;
  line-height: 1.5;
}
.founder-cred-group li.teal-tag { background: var(--c-teal-soft); color: var(--c-teal); }

/* 响应式 */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .h1 { font-size: 34px; } .h2 { font-size: 27px; }
  section { padding: 64px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0; background: #fff; padding: 8px 20px 16px; border-bottom: 1px solid var(--c-line); box-shadow: var(--shadow-md); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 8px; border-bottom: 1px solid var(--c-line-soft); border-radius: 0; background: transparent; }
  .nav-links a:last-child { border-bottom: none; }
  .nav-toggle { display: inline-flex; }
  /* 创始人卡片移动端 */
  .founder-card { grid-template-columns: 1fr; gap: 28px; padding: 28px 24px; text-align: center; }
  .founder-portrait-wrap { width: 200px; margin: 0 auto; }
  .founder-name-row { justify-content: center; }
  .founder-cred-group ul { justify-content: center; }
  .team-section { padding: 56px 0; }
  .founder-section { padding: 56px 0; }
}