/* ============================================
   科雷英GEO (creyin.cn) 共享样式
   明亮科技蓝 · Light Tech Blue
   ============================================ */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --accent: #06b6d4;
  --ink: #0f172a;
  --ink-2: #334155;
  --ink-3: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-blue-tint: #eff6ff;
  --grad: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --grad-soft: linear-gradient(135deg, #eff6ff 0%, #ecfeff 100%);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
  --shadow-md: 0 8px 24px rgba(37, 99, 235, .10);
  --shadow-lg: 0 16px 48px rgba(37, 99, 235, .16);
  --radius: 14px;
  --radius-lg: 20px;
  --maxw: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 通用文字 ---------- */
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--primary);
  background: var(--bg-blue-tint);
  border: 1px solid #bfdbfe;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.section-head h2 { font-size: 34px; line-height: 1.3; margin-bottom: 14px; }
.section-head p { color: var(--ink-3); font-size: 16.5px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 13px 30px;
  border-radius: 10px;
  cursor: pointer;
  border: none;
  transition: all .25s ease;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 6px 20px rgba(37, 99, 235, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(37, 99, 235, .45); }
.btn-ghost {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-ghost:hover { background: var(--bg-blue-tint); }
.btn-lg { font-size: 17px; padding: 15px 36px; }
.btn-sm { font-size: 14px; padding: 9px 20px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-bar { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 700; }
.brand .logo-mark {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--grad);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .5px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, .35);
}
.brand small { font-size: 12px; color: var(--ink-3); font-weight: 500; display: block; line-height: 1.1; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  font-size: 15px;
  color: var(--ink-2);
  padding: 8px 14px;
  border-radius: 8px;
  transition: all .2s;
}
.nav-links a:hover { color: var(--primary); background: var(--bg-blue-tint); }
.nav-links a.active { color: var(--primary); font-weight: 600; }

.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .link { font-size: 15px; color: var(--ink-2); }
.nav-cta .link:hover { color: var(--primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px; height: 2.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: all .25s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(6, 182, 212, .12), transparent 60%),
    radial-gradient(800px 400px at 10% -20%, rgba(37, 99, 235, .14), transparent 60%),
    var(--bg-soft);
  padding: 92px 0 84px;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--primary);
  background: #fff;
  border: 1px solid #bfdbfe;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, .18);
}

.hero h1 { font-size: 46px; line-height: 1.22; letter-spacing: -.5px; margin-bottom: 20px; }
.hero .sub { font-size: 17.5px; color: var(--ink-3); max-width: 520px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }

.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stats .stat .num { font-size: 30px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.hero-stats .stat .num small { font-size: 16px; font-weight: 600; }
.hero-stats .stat .label { font-size: 13px; color: var(--ink-3); }

/* ---------- 检测工具卡片 ---------- */
.detect-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 30px;
  position: relative;
}
.detect-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(37,99,235,.5), rgba(6,182,212,.4));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.detect-card h3 { font-size: 19px; margin-bottom: 6px; }
.detect-card .tip { font-size: 13.5px; color: var(--ink-3); margin-bottom: 18px; }

.platform-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.platform-tabs button {
  font-size: 13.5px;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--ink-2);
  cursor: pointer;
  transition: all .2s;
}
.platform-tabs button.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}

.detect-form { display: flex; gap: 10px; }
.detect-form input {
  flex: 1;
  font-size: 15px;
  padding: 12px 16px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  outline: none;
  transition: border .2s;
  min-width: 0;
}
.detect-form input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }

.detect-result { margin-top: 18px; display: none; }
.detect-result.show { display: block; animation: fadeUp .5s ease; }
.detect-result .status {
  font-size: 13.5px;
  color: var(--ink-3);
  background: var(--bg-soft);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 14px;
}
.detect-result .status .spinner {
  display: inline-block;
  width: 13px; height: 13px;
  border: 2px solid var(--line);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin-right: 8px;
  vertical-align: -2px;
}
.score-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}
.score-box .cell {
  background: var(--grad-soft);
  border: 1px solid #dbeafe;
  border-radius: 12px;
  padding: 14px 10px;
  text-align: center;
}
.score-box .cell .v { font-size: 24px; font-weight: 800; color: var(--primary); }
.score-box .cell .k { font-size: 12px; color: var(--ink-3); }
.detect-result .note {
  font-size: 12.5px;
  color: var(--ink-3);
  text-align: center;
  margin-top: 10px;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ---------- 数据条 ---------- */
.stats-band { background: var(--grad); color: #fff; padding: 52px 0; }
.stats-band .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-band .num { font-size: 36px; font-weight: 800; line-height: 1.2; }
.stats-band .label { font-size: 14px; opacity: .85; }

/* ---------- 功能卡片 ---------- */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cards-grid.two-col { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: all .3s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #bfdbfe; }
.card .icon {
  width: 50px; height: 50px;
  border-radius: 12px;
  background: var(--bg-blue-tint);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-3); }
.card .more { display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--primary); }

/* ---------- 行业网格 ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.industry-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  overflow: hidden;
  transition: all .3s;
}
.industry-card::after {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 4px;
  background: var(--grad);
  opacity: 0;
  transition: opacity .3s;
}
.industry-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.industry-card:hover::after { opacity: 1; }
.industry-card .emoji { font-size: 34px; margin-bottom: 14px; display: block; }
.industry-card h3 { font-size: 19px; margin-bottom: 8px; }
.industry-card p { font-size: 14.5px; color: var(--ink-3); margin-bottom: 14px; }
.industry-card ul { display: flex; flex-wrap: wrap; gap: 8px; }
.industry-card ul li {
  font-size: 12.5px;
  color: var(--primary);
  background: var(--bg-blue-tint);
  padding: 4px 12px;
  border-radius: 999px;
}

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
}
.step .no {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--ink-3); }

/* ---------- 双栏图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split .visual {
  background: var(--grad-soft);
  border: 1px solid #dbeafe;
  border-radius: var(--radius-lg);
  padding: 40px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}
.chat-bubble {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--ink-2);
  box-shadow: var(--shadow-sm);
  max-width: 88%;
}
.chat-bubble.ai { align-self: flex-start; border-top-left-radius: 4px; }
.chat-bubble.user { align-self: flex-end; border-top-right-radius: 4px; background: var(--primary); color: #fff; border-color: var(--primary); }
.chat-bubble .cite { display: block; font-size: 12px; color: var(--accent); margin-top: 6px; }
.chat-bubble.ai .cite { color: var(--primary); }

/* ---------- 定价 ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; align-items: stretch; }
.price-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all .3s;
}
.price-card:hover { box-shadow: var(--shadow-md); }
.price-card.hot {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}
.price-card .tag {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--grad);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  padding: 5px 18px;
  border-radius: 999px;
  white-space: nowrap;
}
.price-card h3 { font-size: 18px; margin-bottom: 4px; }
.price-card .desc { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; min-height: 40px; }
.price-card .amount { font-size: 40px; font-weight: 800; color: var(--ink); line-height: 1.1; }
.price-card .amount small { font-size: 15px; font-weight: 500; color: var(--ink-3); }
.price-card .per { font-size: 13px; color: var(--ink-3); margin-bottom: 20px; }
.price-card ul { flex: 1; margin-bottom: 24px; display: grid; gap: 10px; }
.price-card ul li { font-size: 14px; color: var(--ink-2); display: flex; gap: 8px; align-items: baseline; }
.price-card ul li::before { content: "✓"; color: var(--primary); font-weight: 800; flex-shrink: 0; }
.price-card ul li.off { color: #cbd5e1; }
.price-card ul li.off::before { content: "—"; color: #cbd5e1; }
.price-card .btn { width: 100%; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.faq-item .q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: inherit;
}
.faq-item .q .arrow { color: var(--primary); transition: transform .3s; flex-shrink: 0; }
.faq-item.open .q .arrow { transform: rotate(180deg); }
.faq-item .a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  font-size: 14.5px;
  color: var(--ink-3);
}
.faq-item .a div { padding: 0 22px 20px; }
.faq-item.open .a { max-height: 320px; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(255,255,255,.15), transparent 60%),
    var(--grad);
  border-radius: var(--radius-lg);
  color: #fff;
  text-align: center;
  padding: 60px 40px;
}
.cta-band h2 { font-size: 30px; margin-bottom: 12px; }
.cta-band p { opacity: .9; margin-bottom: 28px; font-size: 16px; }
.cta-band .btn { background: #fff; color: var(--primary); }
.cta-band .btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.18); }

/* ---------- 新闻 / 课程 ---------- */
.news-list { display: grid; gap: 20px; }
.news-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 24px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: all .25s;
}
.news-item:hover { box-shadow: var(--shadow-md); border-color: #bfdbfe; transform: translateY(-2px); }
.news-item .date { text-align: center; border-right: 1px solid var(--line); padding-right: 20px; }
.news-item .date .d { font-size: 28px; font-weight: 800; color: var(--primary); line-height: 1.1; }
.news-item .date .m { font-size: 12.5px; color: var(--ink-3); }
.news-item .body h3 { font-size: 17px; margin-bottom: 6px; }
.news-item .body p { font-size: 13.5px; color: var(--ink-3); }
.news-item .cat {
  font-size: 12.5px;
  color: var(--primary);
  background: var(--bg-blue-tint);
  padding: 5px 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.course-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}
.course-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.course-card .cover {
  height: 120px;
  background: var(--grad);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}
.course-card .cover.alt1 { background: linear-gradient(135deg, #1e40af, #3b82f6); }
.course-card .cover.alt2 { background: linear-gradient(135deg, #0e7490, #06b6d4); }
.course-card .inner { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.course-card h3 { font-size: 18px; margin-bottom: 8px; }
.course-card p { font-size: 14px; color: var(--ink-3); margin-bottom: 14px; flex: 1; }
.course-card .meta { font-size: 13px; color: var(--ink-3); display: grid; gap: 6px; margin-bottom: 18px; }
.course-card .meta b { color: var(--primary); font-weight: 700; }

.syllabus { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.syllabus .row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 24px;
}
.syllabus .row .n {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--bg-blue-tint);
  color: var(--primary);
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
}
.syllabus .row h4 { font-size: 16px; margin-bottom: 4px; }
.syllabus .row p { font-size: 13.5px; color: var(--ink-3); }

/* ---------- 关于我们 ---------- */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.value-card { text-align: center; padding: 30px 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.value-card .icon { font-size: 32px; margin-bottom: 12px; }
.value-card h3 { font-size: 17px; margin-bottom: 8px; }
.value-card p { font-size: 13.5px; color: var(--ink-3); }

/* ---------- 页脚关键词次导航 ---------- */
.footer-keywords {
  border-top: 1px solid #1e293b;
  padding: 16px 0 0;
  margin-bottom: 18px;
  font-size: 13px;
  color: #64748b;
}

.milestone { max-width: 760px; margin: 0 auto; position: relative; padding-left: 30px; }
.milestone::before {
  content: "";
  position: absolute;
  left: 8px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(#2563eb, #06b6d4);
}
.milestone .item { position: relative; padding: 0 0 30px 24px; }
.milestone .item::before {
  content: "";
  position: absolute;
  left: -28px; top: 7px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px var(--bg-blue-tint);
}
.milestone .item .time { font-size: 13px; font-weight: 700; color: var(--primary); }
.milestone .item h4 { font-size: 16px; margin: 4px 0; }
.milestone .item p { font-size: 14px; color: var(--ink-3); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-info .item { display: flex; gap: 16px; margin-bottom: 26px; }
.contact-info .item .icon {
  width: 46px; height: 46px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--bg-blue-tint);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 21px;
}
.contact-info .item h4 { font-size: 15.5px; margin-bottom: 3px; }
.contact-info .item p { font-size: 14.5px; color: var(--ink-3); }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}
.contact-form h3 { font-size: 20px; margin-bottom: 22px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%;
  font-size: 15px;
  padding: 11px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  outline: none;
  font-family: inherit;
  transition: border .2s;
  background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.form-ok {
  display: none;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #047857;
  font-size: 14.5px;
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 16px;
}
.form-ok.show { display: block; animation: fadeUp .4s ease; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0b1526; color: #94a3b8; padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.site-footer .brand { color: #fff; margin-bottom: 14px; }
.site-footer .brand small { color: #64748b; }
.site-footer p { font-size: 13.5px; line-height: 1.8; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.site-footer ul { display: grid; gap: 10px; }
.site-footer ul a { font-size: 13.5px; transition: color .2s; }
.site-footer ul a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
}

/* ---------- 面包屑导航 ---------- */
.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--ink-3); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #cbd5e1; }

/* ---------- 404 ---------- */
.error-wrap { text-align: center; padding: 100px 24px; }
.error-wrap .code {
  font-size: 110px;
  font-weight: 800;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}
.error-wrap h1 { font-size: 26px; margin-bottom: 10px; }
.error-wrap p { color: var(--ink-3); margin-bottom: 30px; }
.error-wrap .links { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页面标题区 ---------- */
.page-hero {
  background:
    radial-gradient(700px 300px at 80% -20%, rgba(6, 182, 212, .12), transparent 60%),
    radial-gradient(600px 280px at 15% -10%, rgba(37, 99, 235, .13), transparent 60%),
    var(--bg-soft);
  padding: 68px 0 60px;
  text-align: center;
}
.page-hero .kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--primary);
  background: #fff;
  border: 1px solid #bfdbfe;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.page-hero h1 { font-size: 36px; margin-bottom: 14px; }
.page-hero p { color: var(--ink-3); max-width: 640px; margin: 0 auto; font-size: 16px; }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: all .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .cards-grid, .industry-grid, .course-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .price-card.hot { transform: none; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-band .grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 36px; }
}

@media (max-width: 640px) {
  .section { padding: 56px 0; }
  .cards-grid, .industry-grid, .cards-grid.two-col, .steps, .pricing-grid, .value-grid, .course-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 12px; }
  .news-item .date { border-right: none; border-bottom: 1px solid var(--line); padding: 0 0 10px; text-align: left; }
  .hero h1 { font-size: 30px; }
  .page-hero h1 { font-size: 28px; }
  .hero-stats { gap: 24px; }

  .nav-links {
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    gap: 4px;
    display: none;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 11px 12px; }
  .nav-toggle { display: flex; }
  .nav-cta .link { display: none; }
  .detect-form { flex-direction: column; }
}