/* ═══════════════════════════════════════════════════════════
   CUJE 初姬 — 蓝白医疗编辑风
   Blue & White Medical Editorial
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Noto+Serif+SC:wght@400;500;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* ── 设计令牌 ── */
:root {
  /* 色彩系统 — 蓝 / 白 */
  --blue: #1e4d8b;
  --blue-deep: #0f2d5c;
  --blue-dark: #14365f;
  --blue-mid: #2d6cb5;
  --blue-light: #4a8fd1;
  --blue-pale: #e8f1fb;
  --blue-mist: #f4f8fd;
  --blue-border: #c5d8ed;
  --ink: #0a1f3d;
  --ink-soft: #1a2f4d;
  --text: #1a2a3a;
  --text-mid: #4a5a6a;
  --text-light: #7a8a9a;
  --text-faint: #a8b5c2;
  --white: #ffffff;
  --paper: #fafbfc;
  --cream: #f7f9fb;
  --line: #d8e0e8;
  --line-soft: #e8edf2;
  --accent: #1e4d8b;
  --shadow-sm: 0 1px 3px rgba(30, 77, 139, 0.06);
  --shadow: 0 4px 24px rgba(30, 77, 139, 0.08);
  --shadow-lg: 0 16px 56px rgba(30, 77, 139, 0.12);
  --max-w: 1280px;
  --max-w-read: 760px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --serif-cn: "Noto Serif SC", "Songti SC", "STSong", serif;
  --serif-en: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 细微背景纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 10%, rgba(30, 77, 139, 0.03) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(74, 143, 209, 0.02) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--blue); text-decoration: none; transition: color 0.3s var(--ease); }
a:hover { color: var(--blue-deep); }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ── 排版基础 ── */
.serif { font-family: var(--serif-cn); }
.serif-en { font-family: var(--serif-en); font-style: italic; }

h1, h2, h3, h4 {
  font-family: var(--serif-cn);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* ── 容器 ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}

.container-read {
  max-width: var(--max-w-read);
  margin: 0 auto;
  padding: 0 40px;
}

/* ═══════════════════════════════════════════════════════════
   导航栏 — 顶部透明，滚动后白底
   ═══════════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: all 0.4s var(--ease);
}

/* 滚动后：白底 + 模糊 + 阴影 */
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--line-soft);
  box-shadow: 0 1px 0 var(--line-soft);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--serif-cn);
}

/* 默认（透明态）：白色文字 */
.nav-brand .brand-cn {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.08em;
  transition: color 0.4s var(--ease);
}

.nav-brand .brand-en {
  font-family: var(--serif-en);
  font-size: 1.1rem;
  font-style: italic;
  font-weight: 500;
  color: var(--blue-light);
  letter-spacing: 0.15em;
  transition: color 0.4s var(--ease);
}

.nav-brand .brand-reg {
  font-family: var(--sans);
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.1em;
  padding-left: 14px;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
  margin-left: 4px;
  transition: all 0.4s var(--ease);
}

/* 滚动后：深色文字 */
.site-header.scrolled .nav-brand .brand-cn { color: var(--blue-deep); }
.site-header.scrolled .nav-brand .brand-en { color: var(--blue-mid); }
.site-header.scrolled .nav-brand .brand-reg {
  color: var(--text-faint);
  border-left-color: var(--line);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-menu a {
  display: block;
  padding: 10px 22px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 400;
  letter-spacing: 0.05em;
  position: relative;
  transition: all 0.3s var(--ease);
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--white);
  transition: all 0.3s var(--ease);
  transform: translateX(-50%);
}

.nav-menu a:hover { color: var(--white); }
.nav-menu a:hover::after { width: 24px; }

.nav-menu a.active {
  color: var(--white);
  font-weight: 500;
}
.nav-menu a.active::after { width: 24px; background: var(--white); }

/* 滚动后：深色文字 */
.site-header.scrolled .nav-menu a { color: var(--text-mid); }
.site-header.scrolled .nav-menu a::after { background: var(--blue); }
.site-header.scrolled .nav-menu a:hover { color: var(--blue-deep); }
.site-header.scrolled .nav-menu a.active {
  color: var(--blue-deep);
}
.site-header.scrolled .nav-menu a.active::after { background: var(--blue); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 1.5px;
  background: var(--white);
  transition: all 0.3s var(--ease);
}

.site-header.scrolled .nav-toggle span { background: var(--blue-deep); }

/* ═══════════════════════════════════════════════════════════
   首页 Hero
   ═══════════════════════════════════════════════════════════ */
.home-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: var(--blue-deep);
  overflow: hidden;
}

/* Hero 背景层 */
.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 70% 30%, rgba(74, 143, 209, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(45, 108, 181, 0.3) 0%, transparent 50%),
    linear-gradient(135deg, var(--blue-deep) 0%, var(--blue-dark) 50%, var(--blue) 100%);
}

/* 细线网格装饰 */
.home-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif-en);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--blue-light);
  letter-spacing: 0.2em;
  margin-bottom: 32px;
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--blue-light);
}

.hero-title {
  font-family: var(--serif-cn);
  font-size: 4.2rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}

.hero-title .accent {
  color: var(--blue-light);
  font-style: italic;
  font-family: var(--serif-en);
  font-weight: 500;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 48px;
  line-height: 1.8;
  font-weight: 300;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}

/* Hero 底部注册信息条 */
.hero-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 24px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.1em;
}

.hero-footer .reg-num {
  font-family: var(--serif-en);
  font-style: italic;
  color: var(--blue-light);
}

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: all 0.4s var(--ease);
  text-decoration: none;
  font-family: var(--sans);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--white);
  color: var(--blue-deep);
}

.btn-primary:hover {
  background: var(--blue-pale);
  color: var(--blue-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: var(--white);
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.btn-blue {
  background: var(--blue);
  color: var(--white);
}

.btn-blue:hover {
  background: var(--blue-deep);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 77, 139, 0.3);
}

.btn-text {
  padding: 8px 0;
  color: var(--blue-deep);
  border-bottom: 1px solid var(--blue);
  border-radius: 0;
  letter-spacing: 0.15em;
  background: transparent;
}

.btn-text:hover {
  color: var(--blue-mid);
  border-bottom-color: var(--blue-mid);
}

.btn-text::after {
  content: " →";
  margin-left: 6px;
  transition: margin 0.3s var(--ease);
}

.btn-text:hover::after { margin-left: 12px; }

/* ═══════════════════════════════════════════════════════════
   数据条
   ═══════════════════════════════════════════════════════════ */
.stats-bar {
  background: var(--white);
  border-bottom: 1px solid var(--line-soft);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 64px 0;
}

.stat-item {
  text-align: center;
  padding: 0 24px;
  border-right: 1px solid var(--line-soft);
  position: relative;
}

.stat-item:last-child { border-right: none; }

.stat-num {
  font-family: var(--serif-en);
  font-size: 3.2rem;
  font-weight: 600;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 12px;
  font-style: italic;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-mid);
  letter-spacing: 0.1em;
}

.stat-num .unit {
  font-size: 1.2rem;
  font-style: normal;
  font-family: var(--serif-cn);
  color: var(--blue-mid);
  margin-left: 4px;
}

/* ═══════════════════════════════════════════════════════════
   通用区块
   ═══════════════════════════════════════════════════════════ */
.home-section {
  padding: 120px 0;
  position: relative;
}

.home-section.alt {
  background: var(--blue-mist);
}

/* 区块标题 */
.section-header {
  margin-bottom: 72px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: end;
  border-bottom: 1px solid var(--line);
  padding-bottom: 32px;
}

.section-header.centered {
  grid-template-columns: 1fr;
  text-align: center;
  justify-items: center;
}

.section-num {
  font-family: var(--serif-en);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--blue-mid);
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.2;
}

.section-title .em {
  font-family: var(--serif-en);
  font-style: italic;
  color: var(--blue);
  font-weight: 500;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-mid);
  max-width: 480px;
  line-height: 1.8;
  justify-self: end;
  text-align: right;
}

.section-header.centered .section-desc {
  justify-self: center;
  text-align: center;
}

/* ═══════════════════════════════════════════════════════════
   产品展示
   ═══════════════════════════════════════════════════════════ */
.product-showcase {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 80px;
  align-items: center;
}

.product-showcase.reverse {
  grid-template-columns: 6fr 5fr;
}

.product-showcase.reverse .product-image-wrap {
  order: 2;
}

.product-image-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--blue-pale);
  box-shadow: var(--shadow-lg);
}

.product-image-wrap::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  z-index: 2;
  pointer-events: none;
}

.product-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}

.product-showcase:hover .product-image-wrap img {
  transform: scale(1.04);
}

/* 图片角标 */
.image-tag {
  position: absolute;
  top: 24px;
  left: 24px;
  z-index: 3;
  padding: 6px 14px;
  background: var(--blue-deep);
  color: var(--white);
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
}

.product-text {
  padding: 20px 0;
}

.product-text .label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-mid);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}

.product-text h3 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--ink);
  line-height: 1.3;
}

.product-text > p {
  color: var(--text-mid);
  margin-bottom: 20px;
  line-height: 1.9;
  font-size: 1rem;
}

/* 特性列表 — 编号式 */
.feature-list {
  display: grid;
  gap: 0;
  margin: 36px 0 40px;
  border-top: 1px solid var(--line-soft);
}

.feature-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
}

.feature-num {
  font-family: var(--serif-en);
  font-size: 1.4rem;
  font-style: italic;
  color: var(--blue);
  font-weight: 500;
  line-height: 1.5;
}

.feature-text h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
  font-family: var(--serif-cn);
}

.feature-text p {
  font-size: 0.9rem;
  color: var(--text-light);
  margin: 0;
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════
   文章卡片
   ═══════════════════════════════════════════════════════════ */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.article-card {
  padding: 40px 32px 40px 0;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  transition: all 0.4s var(--ease);
  position: relative;
}

.article-card:nth-child(3n) { border-right: none; padding-right: 0; }
.article-card:nth-child(n+2) { padding-left: 32px; }

.article-card:hover {
  background: var(--blue-mist);
}

.article-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-tag {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.8rem;
  color: var(--blue-mid);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-tag::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--blue-mid);
}

.article-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 16px;
  color: var(--ink);
  font-family: var(--serif-cn);
}

.article-card h3 a {
  color: inherit;
  transition: color 0.3s var(--ease);
}

.article-card h3 a:hover { color: var(--blue); }

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 24px;
}

.article-meta {
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem;
  color: var(--text-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
  letter-spacing: 0.05em;
}

.article-meta .date {
  font-family: var(--serif-en);
  font-style: italic;
}

.article-meta a {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--blue-deep);
  border-bottom: 1px solid var(--blue);
  padding-bottom: 2px;
}

.article-meta a:hover {
  color: var(--blue-mid);
  border-bottom-color: var(--blue-mid);
}

/* ═══════════════════════════════════════════════════════════
   FAQ
   ═══════════════════════════════════════════════════════════ */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line-soft);
  transition: all 0.3s var(--ease);
}

.faq-question {
  display: grid;
  grid-template-columns: 48px 1fr 32px;
  gap: 20px;
  padding: 28px 0;
  cursor: pointer;
  font-family: var(--serif-cn);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--ink);
  user-select: none;
  align-items: center;
  transition: color 0.3s var(--ease);
}

.faq-question:hover { color: var(--blue); }

.faq-num {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 1rem;
  color: var(--blue-mid);
  font-weight: 500;
}

.faq-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.4s var(--ease);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--blue-deep);
  transition: all 0.4s var(--ease);
}

.faq-icon::before {
  width: 14px;
  height: 1px;
}

.faq-icon::after {
  width: 1px;
  height: 14px;
}

.faq-item.open .faq-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.faq-item.open .faq-icon::before {
  background: var(--blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease), padding 0.4s var(--ease);
  padding: 0 0 0 68px;
  color: var(--text-mid);
  line-height: 1.9;
  font-size: 0.95rem;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 0 28px 68px;
}

.faq-answer p { margin-bottom: 12px; }
.faq-answer p:last-child { margin-bottom: 0; }

/* ═══════════════════════════════════════════════════════════
   CTA 区
   ═══════════════════════════════════════════════════════════ */
.home-cta {
  padding: 120px 0;
  background: var(--blue-deep);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.home-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 50% 50%, rgba(74, 143, 209, 0.2) 0%, transparent 60%),
    linear-gradient(135deg, var(--blue-deep), var(--blue-dark));
}

.home-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 60px;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}

.cta-content .label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-light);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: block;
}

.cta-content h2 {
  font-size: 2.4rem;
  color: var(--white);
  margin-bottom: 24px;
  font-weight: 600;
  line-height: 1.3;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
  font-size: 1.05rem;
  line-height: 1.8;
  font-weight: 300;
}

/* ═══════════════════════════════════════════════════════════
   子页面 Hero
   ═══════════════════════════════════════════════════════════ */
.page-hero {
  padding: 160px 0 80px;
  background: var(--blue-deep);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 30% 50%, rgba(74, 143, 209, 0.15) 0%, transparent 50%),
    linear-gradient(135deg, var(--blue-deep), var(--blue-dark));
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 80px;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero .breadcrumb {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--blue-light);
  letter-spacing: 0.15em;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-hero .breadcrumb::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--blue-light);
}

.page-hero h1 {
  font-size: 3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.page-hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 560px;
  line-height: 1.8;
  font-weight: 300;
}

/* ═══════════════════════════════════════════════════════════
   页面内容
   ═══════════════════════════════════════════════════════════ */
.page-content {
  padding: 80px 0 120px;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
  margin-top: 48px;
}

.sitemap-block {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.sitemap-block h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 18px;
}

.sitemap-link-list {
  display: grid;
  gap: 12px;
}

.sitemap-link-list a {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text);
  transition: color 0.25s var(--ease);
}

.sitemap-link-list a:hover {
  color: var(--blue);
}

.sitemap-link-list strong {
  font-size: 1rem;
  font-weight: 600;
}

.sitemap-link-list span {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ── Prose 排版 ── */
.prose { line-height: 1.95; }

.prose h2 {
  font-size: 1.7rem;
  font-weight: 600;
  margin: 56px 0 24px;
  color: var(--ink);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.prose h2::before {
  content: attr(data-num);
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-mid);
  position: absolute;
  top: 8px;
  left: -48px;
  letter-spacing: 0.1em;
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--ink);
}

.prose p {
  margin-bottom: 20px;
  color: var(--text-mid);
  font-size: 1rem;
}

.prose ul, .prose ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}

.prose ul li {
  list-style: none;
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: var(--text-mid);
}

.prose ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--blue-mid);
}

.prose ol li {
  list-style: decimal;
  margin-bottom: 10px;
  color: var(--text-mid);
  padding-left: 6px;
}

.prose strong {
  color: var(--ink);
  font-weight: 600;
}

.prose blockquote {
  margin: 32px 0;
  padding: 28px 32px;
  background: var(--blue-pale);
  border-left: 3px solid var(--blue);
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.8;
  position: relative;
}

.prose blockquote::before {
  content: "\201C";
  font-family: var(--serif-en);
  font-size: 3rem;
  color: var(--blue-light);
  position: absolute;
  top: 0;
  left: 16px;
  line-height: 1;
  opacity: 0.5;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
}

.prose th, .prose td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
}

.prose th {
  background: var(--blue-pale);
  font-weight: 600;
  color: var(--ink);
  font-family: var(--serif-cn);
  border-bottom: 2px solid var(--blue);
}

.prose code {
  background: var(--blue-pale);
  padding: 2px 8px;
  font-size: 0.88em;
  color: var(--blue-deep);
}

/* ── 信息卡片网格 ── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 32px 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line-soft);
}

.info-card {
  padding: 28px 24px;
  background: var(--white);
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.3s var(--ease);
}

.info-card:hover {
  background: var(--blue-mist);
}

.info-card strong {
  display: block;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.8rem;
  color: var(--blue-mid);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 500;
}

.info-card p {
  margin: 0;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.98rem;
  font-family: var(--serif-cn);
}

/* ── 强调框 ── */
.callout {
  margin: 32px 0;
  padding: 32px 36px;
  background: var(--blue-deep);
  color: var(--white);
  border-radius: 0;
  position: relative;
}

.callout::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: var(--blue-light);
}

.callout h3 {
  color: var(--blue-light);
  margin-bottom: 12px;
  font-size: 1.1rem;
  font-family: var(--serif-en);
  font-style: italic;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.callout p {
  margin: 0;
  font-size: 1.1rem;
  color: var(--white);
  font-family: var(--serif-cn);
  font-weight: 500;
  line-height: 1.7;
}

/* ── 专利/审查信息框 ── */
.info-box {
  margin-top: 20px;
  padding: 24px 28px;
  background: var(--blue-pale);
  border-left: 3px solid var(--blue);
  font-size: 0.92rem;
  color: var(--text-mid);
  line-height: 1.8;
}

.info-box strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-family: var(--serif-cn);
}

/* ═══════════════════════════════════════════════════════════
   文章详情
   ═══════════════════════════════════════════════════════════ */
.article-detail {
  max-width: var(--max-w-read);
  margin: 0 auto;
}

.article-detail-header {
  text-align: center;
  margin-bottom: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.article-detail-header .cat {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--blue-mid);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: block;
}

.article-detail-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.4;
  color: var(--ink);
}

.article-detail-meta {
  display: flex;
  justify-content: center;
  gap: 32px;
  font-size: 0.82rem;
  color: var(--text-light);
  letter-spacing: 0.05em;
}

.article-detail-meta span {
  font-family: var(--serif-en);
  font-style: italic;
}

.article-detail-body {
  font-size: 1.02rem;
}

.article-detail-footer {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.article-sources {
  background: var(--blue-pale);
  padding: 28px 32px;
  border-left: 3px solid var(--blue);
  font-size: 0.88rem;
  color: var(--text-mid);
  margin-bottom: 40px;
  line-height: 1.9;
}

.article-sources strong {
  display: block;
  margin-bottom: 12px;
  color: var(--ink);
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.related-articles h3 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--ink);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.related-list {
  display: grid;
  gap: 0;
  counter-reset: rel;
}

.related-list a {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink);
  font-family: var(--serif-cn);
  font-weight: 500;
  transition: all 0.3s var(--ease);
  align-items: center;
}

.related-list a:hover {
  color: var(--blue);
  padding-left: 12px;
}

.related-list a::before {
  content: counter(rel, decimal-leading-zero);
  counter-increment: rel;
  font-family: var(--serif-en);
  font-style: italic;
  color: var(--blue-mid);
  font-size: 0.9rem;
}

/* ── 分类筛选 ── */
.category-tabs {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 64px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
}

.category-tab {
  padding: 14px 28px;
  font-size: 0.88rem;
  font-weight: 500;
  background: transparent;
  color: var(--text-light);
  border: none;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  letter-spacing: 0.08em;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-family: var(--serif-cn);
}

.category-tab:hover { color: var(--blue-deep); }

.category-tab.active {
  color: var(--blue-deep);
  border-bottom-color: var(--blue);
  font-weight: 600;
}

/* ── 分类区块 ── */
.article-category-section {
  margin-bottom: 80px;
}

.article-category-section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.article-category-section h2 .en {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-mid);
  font-weight: 500;
  letter-spacing: 0.15em;
}

/* ═══════════════════════════════════════════════════════════
   页脚
   ═══════════════════════════════════════════════════════════ */
.site-footer {
  background: var(--blue-deep);
  color: rgba(255, 255, 255, 0.6);
  padding: 80px 0 32px;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-light), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 56px;
}

.footer-brand h3 {
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 16px;
  font-family: var(--serif-cn);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.footer-brand h3 .en {
  font-family: var(--serif-en);
  font-style: italic;
  font-weight: 500;
  color: var(--blue-light);
  margin-left: 12px;
  font-size: 1.1rem;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.5);
  max-width: 360px;
}

.footer-reg {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(74, 143, 209, 0.15);
  border: 1px solid rgba(74, 143, 209, 0.3);
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.8rem;
  color: var(--blue-light);
  letter-spacing: 0.1em;
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.85rem;
  margin-bottom: 20px;
  font-weight: 600;
  font-family: var(--serif-cn);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-col h4::before {
  content: "";
  display: block;
  width: 24px;
  height: 1px;
  background: var(--blue-light);
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.88rem;
  transition: all 0.3s var(--ease);
}

.footer-col ul li a:hover {
  color: var(--blue-light);
  padding-left: 6px;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.05em;
}

.footer-bottom p { margin-bottom: 6px; line-height: 1.7; }

/* ═══════════════════════════════════════════════════════════
   404
   ═══════════════════════════════════════════════════════════ */
.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 160px 0 80px;
  background: var(--blue-deep);
  position: relative;
  overflow: hidden;
}

.error-page::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(74, 143, 209, 0.15) 0%, transparent 60%);
}

.error-page .container { position: relative; z-index: 2; }

.error-code {
  font-family: var(--serif-en);
  font-size: 8rem;
  font-weight: 600;
  font-style: italic;
  color: var(--blue-light);
  line-height: 1;
  margin-bottom: 24px;
}

.error-page h2 {
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: var(--white);
  font-weight: 600;
}

.error-page p {
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 40px;
  font-weight: 300;
}

/* ═══════════════════════════════════════════════════════════
   响应式
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .product-showcase,
  .product-showcase.reverse {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .product-showcase.reverse .product-image-wrap { order: 0; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card:nth-child(3n) { border-right: 1px solid var(--line-soft); padding-right: 32px; }
  .article-card:nth-child(2n) { border-right: none; padding-right: 0; }
  .article-card:nth-child(n+3) { padding-left: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid var(--line-soft); padding-bottom: 32px; }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .sitemap-grid { grid-template-columns: 1fr; }
  .section-header { grid-template-columns: 1fr; gap: 20px; }
  .section-desc { justify-self: start; text-align: left; }
}

@media (max-width: 768px) {
  .container, .container-read { padding: 0 24px; }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 80px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
  .nav-menu a::after { display: none; }
  .nav-toggle { display: flex; }
  
  .hero-title { font-size: 2.6rem; }
  .hero-subtitle { font-size: 1rem; }
  .section-title { font-size: 1.8rem; }
  .page-hero h1 { font-size: 2.2rem; }
  .cta-content h2 { font-size: 1.8rem; }
  
  .article-grid { grid-template-columns: 1fr; }
  .article-card, .article-card:nth-child(n) { 
    padding: 32px 0; 
    border-right: none; 
    padding-left: 0;
  }
  
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .info-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; padding: 32px 0; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--line-soft); padding: 24px 0; }
  .stat-item:last-child { border-bottom: none; }
  
  .home-hero { min-height: auto; padding: 120px 0 100px; }
  .home-section { padding: 80px 0; }
  .hero-footer { position: relative; padding: 24px; flex-direction: column; gap: 8px; align-items: flex-start; }
  
  .faq-question { grid-template-columns: 32px 1fr 28px; gap: 12px; font-size: 1rem; }
  .faq-answer, .faq-item.open .faq-answer { padding-left: 44px; }
  
  .article-detail-header h1 { font-size: 1.6rem; }
  .article-detail-meta { flex-direction: column; gap: 8px; }
}

/* ── 动画 ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-up { animation: fadeUp 0.8s var(--ease) forwards; }
.fade-in { animation: fadeIn 1s var(--ease) forwards; }
.delay-1 { animation-delay: 0.15s; opacity: 0; }
.delay-2 { animation-delay: 0.3s; opacity: 0; }
.delay-3 { animation-delay: 0.45s; opacity: 0; }
.delay-4 { animation-delay: 0.6s; opacity: 0; }

/* 滚动出现 */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 选中文本 */
::selection {
  background: var(--blue);
  color: var(--white);
}

/* 滚动条 */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--blue-light); }
::-webkit-scrollbar-thumb:hover { background: var(--blue-mid); }

/* ═══════════════════════════════════════════════════════════
   子页面 Hero 轮播 — 简化版（高度较小）
   ═══════════════════════════════════════════════════════════ */
.hero-slider.hero-slider--page {
  min-height: auto;
}

.hero-slider--page .hero-track {
  min-height: 440px;
}

.hero-slider--page .hero-slide {
  padding: 140px 0 80px;
  align-items: center;
}

.hero-slider--page .hero-title {
  font-size: 2.6rem;
  margin-bottom: 20px;
}

.hero-slider--page .hero-subtitle {
  font-size: 1rem;
  margin-bottom: 32px;
}

.hero-slider--page .hero-controls {
  bottom: 40px;
}

.hero-slider--page .hero-arrows {
  display: none;
}

/* 子页面幻灯片背景 */
/* 背景图由模板中的 inline style 动态设置 */

@media (max-width: 768px) {
  .hero-slider--page .hero-track { min-height: 360px; }
  .hero-slider--page .hero-slide { padding: 120px 0 80px; }
  .hero-slider--page .hero-title { font-size: 1.8rem; }
  .hero-slider--page .hero-controls { bottom: 30px; }
}

/* ═══════════════════════════════════════════════════════════
   Hero 轮播 — 全屏多幻灯片
   ═══════════════════════════════════════════════════════════ */
.hero-slider {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: var(--blue-deep);
}

.hero-track {
  position: relative;
  min-height: 100vh;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  padding: 120px 0 100px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s var(--ease), visibility 1s;
  z-index: 1;
  background-size: cover;
  background-position: center;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

/* 幻灯片背景遮罩 */
.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, rgba(15, 45, 92, 0.55), rgba(30, 77, 139, 0.45));
}

.hero-slide .container { position: relative; z-index: 2; }

/* 轮播控件 */
.hero-controls {
  position: absolute;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 12px;
  align-items: center;
}

.hero-dot {
  width: 40px;
  height: 3px;
  background: rgba(255, 255, 255, 0.3);
  border: none;
  cursor: pointer;
  transition: all 0.4s var(--ease);
  padding: 0;
}

.hero-dot.active {
  background: var(--white);
  width: 60px;
}

.hero-arrows {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 0 40px;
  pointer-events: none;
}

.hero-arrow {
  width: 56px;
  height: 56px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  color: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: all 0.3s var(--ease);
  pointer-events: auto;
}

.hero-arrow:hover {
  background: var(--white);
  color: var(--blue-deep);
  border-color: var(--white);
}

/* ═══════════════════════════════════════════════════════════
   新闻横向滑动卡片
   ═══════════════════════════════════════════════════════════ */
.news-scroller-wrap {
  position: relative;
  overflow: hidden;
}

.news-scroller {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 8px 40px 32px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.news-scroller::-webkit-scrollbar { display: none; }

.news-slide-card {
  flex: 0 0 360px;
  scroll-snap-align: start;
  background: var(--white);
  border: 1px solid var(--line-soft);
  transition: all 0.4s var(--ease);
  display: flex;
  flex-direction: column;
}

.news-slide-card:hover {
  border-color: var(--blue-border);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.news-slide-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--blue-pale);
  overflow: hidden;
  position: relative;
}

.news-slide-img::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue-pale), var(--blue-mist));
  z-index: 0;
}

.news-slide-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
  transition: transform 0.8s var(--ease);
}

.news-slide-card:hover .news-slide-img img {
  transform: scale(1.06);
}

.news-slide-body {
  padding: 24px 28px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-slide-date {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.82rem;
  color: var(--blue-mid);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.news-slide-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--ink);
  font-family: var(--serif-cn);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-slide-card h3 a { color: inherit; }
.news-slide-card h3 a:hover { color: var(--blue); }

.news-slide-excerpt {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-slide-more {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--blue-deep);
  border-bottom: 1px solid var(--blue);
  padding-bottom: 2px;
  align-self: flex-start;
}

/* 滚动按钮 */
.scroller-nav {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-bottom: 32px;
}

.scroller-btn {
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--blue-deep);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all 0.3s var(--ease);
}

.scroller-btn:hover {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

.scroller-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ═══════════════════════════════════════════════════════════
   产品矩阵 — 左侧列表 + 右侧详情
   ═══════════════════════════════════════════════════════════ */
.product-matrix {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  border: 1px solid var(--line);
  background: var(--white);
}

.product-matrix-list {
  border-right: 1px solid var(--line-soft);
  background: var(--blue-mist);
}

.product-matrix-item {
  display: block;
  padding: 24px 28px;
  border-bottom: 1px solid var(--line-soft);
  cursor: pointer;
  transition: all 0.3s var(--ease);
  position: relative;
  font-family: var(--serif-cn);
  font-weight: 500;
  color: var(--text-mid);
  font-size: 1rem;
}

.product-matrix-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--blue);
  transform: scaleY(0);
  transition: transform 0.3s var(--ease);
}

.product-matrix-item:hover {
  background: var(--white);
  color: var(--blue-deep);
}

.product-matrix-item.active {
  background: var(--white);
  color: var(--blue-deep);
  font-weight: 600;
}

.product-matrix-item.active::before {
  transform: scaleY(1);
}

.product-matrix-item .en {
  display: block;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 4px;
  letter-spacing: 0.1em;
}

.product-matrix-item.active .en { color: var(--blue-mid); }

.product-matrix-detail {
  padding: 48px;
  display: flex;
  flex-direction: column;
}

.product-matrix-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.product-matrix-panel.active {
  display: grid;
  animation: fadeIn 0.5s var(--ease);
}

.product-matrix-img {
  aspect-ratio: 1 / 1;
  background: var(--blue-pale);
  overflow: hidden;
  position: relative;
}

.product-matrix-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-matrix-info h3 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ink);
}

.product-matrix-info .spec {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-mid);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  display: block;
}

.product-matrix-info p {
  color: var(--text-mid);
  line-height: 1.9;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.product-matrix-features {
  display: grid;
  gap: 12px;
  margin-bottom: 28px;
}

.product-matrix-features li {
  display: flex;
  gap: 12px;
  align-items: start;
  font-size: 0.9rem;
  color: var(--text-mid);
  list-style: none;
}

.product-matrix-features li::before {
  content: "✓";
  color: var(--blue);
  font-weight: 700;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   大图 CTA 横幅
   ═══════════════════════════════════════════════════════════ */
.banner-cta {
  position: relative;
  padding: 140px 0;
  overflow: hidden;
  background: var(--blue-deep);
}

.banner-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(15, 45, 92, 0.6), rgba(30, 77, 139, 0.5)),
    url("https://images.unsplash.com/photo-1551076805-e1869033e561?w=1600&q=80");
  background-size: cover;
  background-position: center;
}

.banner-cta .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 48px;
}

.banner-cta-text .label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-light);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: block;
}

.banner-cta-text h2 {
  font-size: 2.2rem;
  color: var(--white);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 16px;
  max-width: 640px;
}

.banner-cta-text p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 560px;
  font-weight: 300;
}

/* ═══════════════════════════════════════════════════════════
   数据墙增强 — 大数字
   ═══════════════════════════════════════════════════════════ */
.data-wall {
  background: var(--blue-deep);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.data-wall::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.data-wall .container { position: relative; z-index: 2; }

.data-wall-header {
  text-align: center;
  margin-bottom: 64px;
}

.data-wall-header .label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-light);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: block;
}

.data-wall-header h2 {
  font-size: 2.2rem;
  color: var(--white);
  font-weight: 600;
}

.data-wall-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.data-wall-item {
  text-align: center;
  padding: 32px 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.data-wall-item:last-child { border-right: none; }

.data-wall-num {
  font-family: var(--serif-en);
  font-size: 3.6rem;
  font-weight: 600;
  font-style: italic;
  color: var(--white);
  line-height: 1;
  margin-bottom: 12px;
}

.data-wall-num .plus {
  color: var(--blue-light);
  font-style: normal;
}

.data-wall-label {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
}

/* ═══════════════════════════════════════════════════════════
   双列特性区
   ═══════════════════════════════════════════════════════════ */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
}

.feature-split-img {
  min-height: 480px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.feature-split-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(30, 77, 139, 0.1), transparent);
}

.feature-split-text {
  padding: 80px 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--white);
}

.feature-split-text .label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--blue-mid);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: block;
}

.feature-split-text h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--ink);
  line-height: 1.3;
}

.feature-split-text > p {
  color: var(--text-mid);
  line-height: 1.9;
  margin-bottom: 32px;
  font-size: 1rem;
}

.feature-split-list {
  display: grid;
  gap: 16px;
}

.feature-split-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 16px;
  align-items: start;
  list-style: none;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.feature-split-list li:last-child { border-bottom: none; }

.feature-split-list .num {
  font-family: var(--serif-en);
  font-style: italic;
  color: var(--blue);
  font-weight: 600;
  font-size: 1.1rem;
}

.feature-split-list .text strong {
  display: block;
  color: var(--ink);
  font-family: var(--serif-cn);
  font-weight: 600;
  margin-bottom: 4px;
}

.feature-split-list .text span {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
}

.feature-split--plain {
  grid-template-columns: 1fr;
  background: var(--bg-soft);
}

.company-overview-grid {
  margin-top: 12px;
}

.home-product-feature {
  display: grid;
  gap: 28px;
}

.home-product-stage {
  display: grid;
  grid-template-columns: minmax(360px, 0.95fr) minmax(420px, 1.05fr);
  grid-template-areas: "copy media";
  gap: 36px;
  align-items: stretch;
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(30, 77, 139, 0.1);
  box-shadow: 0 20px 54px rgba(15, 45, 92, 0.09);
}

.home-product-copy {
  grid-area: copy;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px 18px 56px 56px;
}

.home-product-kicker {
  margin-bottom: 18px;
  font-family: var(--serif-en);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--blue-mid);
  letter-spacing: 0.16em;
}

.home-product-copy h3 {
  margin-bottom: 18px;
  font-size: 2.25rem;
  line-height: 1.18;
}

.home-product-copy h3 a {
  color: inherit;
}

.home-product-copy h3 a:hover {
  color: var(--blue);
}

.home-product-summary {
  margin-bottom: 24px;
  color: var(--text-mid);
  font-size: 1rem;
  line-height: 1.9;
}

.home-product-register {
  display: grid;
  gap: 5px;
  margin-bottom: 26px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.home-product-register span {
  color: var(--text-light);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.home-product-register strong {
  color: var(--blue-deep);
  font-size: 1.05rem;
  font-weight: 600;
}

.home-product-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.home-product-media {
  grid-area: media;
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: var(--blue-pale);
  overflow: hidden;
}

.home-product-media::before {
  content: none;
}

.home-product-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.home-product-media figcaption {
  position: absolute;
  left: 24px;
  bottom: 22px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--blue-deep);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  z-index: 1;
}

.home-product-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.home-product-facts div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 18px;
  align-items: start;
}

.home-product-facts dt {
  color: var(--text-light);
  font-size: 0.82rem;
  line-height: 1.6;
}

.home-product-facts dd {
  color: var(--ink);
  font-size: 0.94rem;
  line-height: 1.65;
}

.fact-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line-soft);
  background: var(--white);
}

.fact-summary-item {
  min-height: 188px;
  padding: 28px 30px;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.fact-summary-item span,
.evidence-summary article span,
.evidence-type {
  display: block;
  margin-bottom: 10px;
  color: var(--blue-mid);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.fact-summary-item strong,
.evidence-summary article strong {
  display: block;
  margin-bottom: 12px;
  color: var(--ink);
  font-family: var(--serif-cn);
  font-size: 1.05rem;
  font-weight: 600;
}

.fact-summary-item p,
.evidence-summary article p {
  color: var(--text-mid);
  font-size: 0.92rem;
  line-height: 1.75;
}

.evidence-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.evidence-summary article {
  padding: 24px;
  background: var(--blue-mist);
  border: 1px solid var(--line-soft);
}

.fact-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 52px;
}

.fact-row {
  display: grid;
  grid-template-columns: 150px 120px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  align-items: start;
}

.fact-row span,
.fact-row small {
  color: var(--text-light);
  font-size: 0.84rem;
}

.fact-row strong {
  color: var(--ink);
  font-family: var(--serif-cn);
  font-weight: 600;
}

.fact-row p {
  color: var(--text-mid);
  line-height: 1.75;
}

.evidence-list {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.evidence-card {
  padding: 30px;
  border: 1px solid var(--line-soft);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.evidence-card h3 {
  margin-bottom: 14px;
  font-size: 1.28rem;
}

.evidence-card p {
  color: var(--text-mid);
  line-height: 1.85;
}

.evidence-card dl {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
}

.evidence-card dl div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 14px;
}

.evidence-card dt {
  color: var(--text-light);
  font-size: 0.84rem;
}

.evidence-card dd {
  color: var(--ink);
  line-height: 1.65;
}

.support-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.support-link {
  display: grid;
  gap: 8px;
  padding: 24px 26px;
  border: 1px solid var(--line-soft);
  background: var(--white);
}

.support-link strong {
  color: var(--ink);
  font-family: var(--serif-cn);
  font-size: 1.05rem;
}

.support-link span {
  color: var(--text-mid);
  font-size: 0.9rem;
  line-height: 1.7;
}

.product-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.product-showcase--center {
  margin-top: 40px;
}

.product-showcase--compact {
  margin-top: 32px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  box-shadow: 0 18px 40px rgba(23, 44, 81, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px rgba(23, 44, 81, 0.1);
}

.product-card--center {
  min-height: 100%;
}

.product-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
}

.product-card-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(30, 77, 139, 0.08);
  color: var(--blue);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}

.product-card h3 {
  font-size: 1.35rem;
  line-height: 1.4;
  color: var(--ink);
}

.product-card h3 a {
  color: inherit;
}

.product-card h3 a:hover {
  color: var(--blue);
}

.product-card-meta,
.product-card-summary {
  color: var(--text-mid);
  line-height: 1.8;
}

.product-card-meta {
  font-size: 0.92rem;
}

.product-card-features {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.product-card-features li {
  position: relative;
  padding-left: 18px;
  color: var(--text-mid);
  line-height: 1.7;
}

.product-card-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  transform: translateY(-50%);
}

.product-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.product-facts span {
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--text-mid);
  font-size: 0.85rem;
}

.section-actions {
  margin-top: 36px;
  text-align: center;
}

.detail-panel {
  margin-top: 48px;
  padding: 32px;
  border-radius: 20px;
  border: 1px solid var(--line-soft);
  background: var(--bg-soft);
}

.detail-panel h2 {
  margin-bottom: 18px;
}

.detail-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  color: var(--text-mid);
  line-height: 1.8;
}

/* 响应式补充 */
@media (max-width: 1024px) {
  .product-matrix { grid-template-columns: 1fr; }
  .product-matrix-list {
    display: flex;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--line-soft);
  }
  .product-matrix-item {
    flex: 0 0 auto;
    border-bottom: none;
    border-right: 1px solid var(--line-soft);
    white-space: nowrap;
  }
  .product-matrix-item::before { display: none; }
  .product-matrix-panel.active { grid-template-columns: 1fr; gap: 32px; }
  .product-matrix-detail { padding: 32px; }
  .data-wall-grid { grid-template-columns: repeat(2, 1fr); }
  .data-wall-item:nth-child(2) { border-right: none; }
  .data-wall-item:nth-child(1), .data-wall-item:nth-child(2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .feature-split { grid-template-columns: 1fr; }
  .feature-split-img { min-height: 320px; }
  .feature-split-text { padding: 48px 32px; }
  .banner-cta .container { grid-template-columns: 1fr; }
  .home-product-stage {
    grid-template-columns: 1fr;
    grid-template-areas:
      "media"
      "copy";
    gap: 0;
  }
  .home-product-copy { padding: 42px 40px; }
  .home-product-media { min-height: 380px; }
  .fact-summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evidence-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact-row { grid-template-columns: 120px 100px 1fr; }
  .support-links { grid-template-columns: 1fr; }
  .product-showcase { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
  .hero-slide { padding: 100px 0 120px; }
  .hero-controls { bottom: 60px; }
  .hero-arrows { display: none; }
  .news-slide-card { flex: 0 0 280px; }
  .data-wall-grid { grid-template-columns: 1fr; }
  .data-wall-item { border-right: none; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
  .banner-cta { padding: 80px 0; }
  .banner-cta-text h2 { font-size: 1.6rem; }
  .data-wall-header h2 { font-size: 1.6rem; }
  .home-product-copy { padding: 32px 24px; }
  .home-product-copy h3 { font-size: 1.75rem; }
  .home-product-media { min-height: 300px; }
  .home-product-media figcaption { left: 24px; bottom: 22px; }
  .home-product-facts div { grid-template-columns: 80px 1fr; gap: 12px; }
  .home-product-actions { gap: 18px; }
  .fact-summary-grid,
  .evidence-summary { grid-template-columns: 1fr; }
  .fact-summary-item { min-height: 0; padding: 24px; }
  .fact-row,
  .evidence-card dl div { grid-template-columns: 1fr; gap: 6px; }
  .evidence-card { padding: 24px; }
  .product-showcase { grid-template-columns: 1fr; }
  .product-card-body { padding: 24px; }
  .detail-panel { padding: 24px; }
}