/* ==========================================================================
   骏贲科技官网 - 主样式表
   技术方案: 纯 CSS3, 零依赖, 移动优先响应式设计
   ========================================================================== */

/* ==========================================================================
   1. CSS 变量 - 设计令牌
   ========================================================================== */
:root {
  /* 品牌色系 */
  --color-primary: #6366F1;
  --color-primary-dark: #4F46E5;
  --color-primary-light: #818CF8;
  --color-secondary: #06B6D4;
  --color-secondary-dark: #0891B2;
  --color-accent: #8B5CF6;

  /* 中性色 */
  --color-dark: #0B0F1A;
  --color-dark-2: #1E293B;
  --color-dark-3: #334155;
  --color-gray: #64748B;
  --color-gray-light: #94A3B8;
  --color-border: #E2E8F0;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-bg-dark: #0B0F1A;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
  --gradient-primary-rev: linear-gradient(135deg, #06B6D4 0%, #6366F1 100%);
  --gradient-dark: linear-gradient(180deg, #0B0F1A 0%, #1E293B 100%);
  --gradient-hero: linear-gradient(135deg, #0B0F1A 0%, #1E1B4B 40%, #0F172A 100%);
  --gradient-glow: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 70%);

  /* 排版 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", "Courier New", monospace;

  /* 间距系统 (8px 基准) */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);
  --shadow-xl: 0 24px 56px rgba(0, 0, 0, 0.14);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.25);

  /* 过渡 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 布局 */
  --container-max: 1200px;
  --navbar-height: 72px;
}

/* ==========================================================================
   2. 现代重置
   ========================================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark-2);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

/* ==========================================================================
   3. 排版
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-dark);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { margin-bottom: var(--space-sm); }

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-center { text-align: center; }
.text-light { color: var(--color-gray-light); }

/* ==========================================================================
   4. 布局工具
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-sm {
  max-width: 800px;
}

.section {
  padding: var(--space-3xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-bg-dark);
  color: #fff;
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #fff;
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

/* ==========================================================================
   5. 区块标题
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-2xl);
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.08);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-gray);
  line-height: 1.7;
}

.section-dark .section-header .eyebrow {
  background: rgba(99, 102, 241, 0.2);
  color: var(--color-primary-light);
}

.section-dark .section-header p {
  color: var(--color-gray-light);
}

/* ==========================================================================
   6. 按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
  line-height: 1;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-light {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.875rem;
}

/* ==========================================================================
   7. 导航栏
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.02em;
}

.navbar-logo .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.125rem;
  font-weight: 800;
  flex-shrink: 0;
}

.navbar-logo .logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.navbar-logo .logo-text .name {
  font-size: 1.125rem;
}

.navbar-logo .logo-text .tagline {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-gray);
  letter-spacing: 0.05em;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.navbar-menu a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-dark-2);
  position: relative;
  padding: 6px 0;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.navbar-menu a:hover::after,
.navbar-menu a.active::after {
  width: 100%;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.navbar-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   8. Hero 区域
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  color: #fff;
  overflow: hidden;
  padding-top: var(--navbar-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--color-primary-light);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-secondary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.hero h1 .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--color-gray-light);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat .number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.hero-stat .label {
  font-size: 0.875rem;
  color: var(--color-gray-light);
  margin-top: 4px;
}

/* ==========================================================================
   9. 问题陈述区
   ========================================================================== */
.problem {
  background: var(--color-bg-dark);
  color: #fff;
  padding: var(--space-3xl) 0;
  text-align: center;
}

.problem h2 {
  color: #fff;
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.problem .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.problem-desc {
  font-size: 1.125rem;
  color: var(--color-gray-light);
  max-width: 680px;
  margin: 0 auto;
}

.ai-platforms {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.ai-platform {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--transition-base);
}

.ai-platform:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

.ai-platform .icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--gradient-primary);
  color: #fff;
}

/* ==========================================================================
   10. 功能卡片
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-step {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.18;
  letter-spacing: 0.02em;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  background: var(--gradient-primary);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.feature-card:hover .feature-icon svg {
  color: #fff;
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--color-gray);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.feature-card .feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
}

.feature-card .feature-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.feature-card:hover .feature-link svg {
  transform: translateX(4px);
}

/* ==========================================================================
   11. 服务行业
   ========================================================================== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.industry-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.industry-card:hover {
  background: var(--color-dark);
  border-color: var(--color-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.industry-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-sm);
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.industry-card:hover .industry-icon {
  background: rgba(99, 102, 241, 0.3);
}

.industry-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  transition: color var(--transition-base);
}

.industry-card:hover .industry-icon svg {
  color: var(--color-primary-light);
}

.industry-card h4 {
  margin-bottom: var(--space-xs);
  transition: color var(--transition-base);
}

.industry-card:hover h4 {
  color: #fff;
}

.industry-card p {
  font-size: 0.8125rem;
  color: var(--color-gray);
  line-height: 1.6;
  margin: 0;
  transition: color var(--transition-base);
}

.industry-card:hover p {
  color: var(--color-gray-light);
}

/* ===== 成果案例卡片 ===== */
.case-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.case-card-image {
  width: 100%;
  height: 168px;
  overflow: hidden;
}
.case-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}
.case-card:hover .case-card-image img {
  transform: scale(1.06);
}
.case-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.1);
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: var(--space-sm);
}
.case-card-body h4 {
  font-size: 1.0625rem;
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}
.case-card-body p {
  font-size: 0.8125rem;
  color: var(--color-gray);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}
.case-metric {
  margin-top: auto;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-gray);
}
.case-metric strong {
  color: var(--color-primary);
  font-size: 1.0625rem;
}

/* ==========================================================================
   12. 服务流程
   ========================================================================== */
.process-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  opacity: 0.2;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-number {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  position: relative;
  z-index: 2;
  transition: all var(--transition-base);
}

.process-step:hover .process-number {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
  transform: scale(1.1);
}

.process-step h4 {
  margin-bottom: var(--space-xs);
}

.process-step p {
  font-size: 0.875rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* ==========================================================================
   13. 新闻卡片
   ========================================================================== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.news-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.news-card-image {
  width: 100%;
  height: 180px;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.news-card-image .placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 3rem;
}

.news-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-date {
  font-size: 0.8125rem;
  color: var(--color-gray-light);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card h3 {
  font-size: 1.0625rem;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 0.875rem;
  color: var(--color-gray);
  line-height: 1.6;
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-card .read-more {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-card .read-more svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.news-card:hover .read-more svg {
  transform: translateX(4px);
}

/* ==========================================================================
   14. CTA 区域
   ========================================================================== */
.cta {
  position: relative;
  padding: var(--space-3xl) 0;
  background: var(--gradient-hero);
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: var(--gradient-glow);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta h2 {
  color: #fff;
  margin-bottom: var(--space-md);
}

.cta p {
  font-size: 1.125rem;
  color: var(--color-gray-light);
  margin-bottom: var(--space-xl);
}

.cta-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   15. 页脚
   ========================================================================== */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-gray-light);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .navbar-logo {
  color: #fff;
  margin-bottom: var(--space-md);
}

.footer-brand .navbar-logo .logo-text .tagline {
  color: var(--color-gray-light);
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-gray-light);
  max-width: 320px;
}

.footer-col h5 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.footer-col ul li {
  margin-bottom: var(--space-sm);
}

.footer-col ul li a {
  font-size: 0.9375rem;
  color: var(--color-gray-light);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: var(--color-primary-light);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-gray-light);
  margin-bottom: var(--space-sm);
}

.footer-contact li svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact .phone-lines {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-contact .phone-lines a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-contact .phone-lines a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-gray-light);
}

.footer-bottom a {
  color: var(--color-gray-light);
}

.footer-bottom a:hover {
  color: var(--color-primary-light);
}

/* ==========================================================================
   16. 通用页面 (内页)
   ========================================================================== */
.page-hero {
  background: var(--gradient-hero);
  color: #fff;
  padding: calc(var(--navbar-height) + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

.page-hero h1 {
  color: #fff;
  margin-bottom: var(--space-sm);
  position: relative;
  z-index: 2;
}

.page-hero p {
  font-size: 1.125rem;
  color: var(--color-gray-light);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* 面包屑 */
.breadcrumb {
  padding: var(--space-md) 0;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb ul {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-gray);
}

.breadcrumb ul li a {
  color: var(--color-gray);
}

.breadcrumb ul li a:hover {
  color: var(--color-primary);
}

.breadcrumb ul li:last-child {
  color: var(--color-dark-2);
  font-weight: 500;
}

.breadcrumb .separator {
  color: var(--color-gray-light);
}

/* ==========================================================================
   17. 关于我们页面
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-text h2 {
  margin-bottom: var(--space-md);
}

.about-text p {
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.about-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--gradient-hero);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual .stats-overlay {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  padding: var(--space-2xl);
}

.about-visual .stat-item {
  text-align: center;
  color: #fff;
}

.about-visual .stat-item .number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about-visual .stat-item .label {
  font-size: 0.9375rem;
  color: var(--color-gray-light);
  margin-top: 4px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.value-card {
  text-align: center;
  padding: var(--space-xl);
}

.value-card .value-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-card .value-icon svg {
  width: 32px;
  height: 32px;
  color: #fff;
}

.value-card h3 {
  margin-bottom: var(--space-sm);
}

.value-card p {
  color: var(--color-gray);
  font-size: 0.9375rem;
}

/* ==========================================================================
   18. 新闻列表页
   ========================================================================== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.news-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
  transform: translateX(4px);
}

.news-item-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  border-radius: var(--radius-md);
  color: #fff;
  padding: var(--space-md);
  text-align: center;
}

.news-item-date .day {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}

.news-item-date .month {
  font-size: 0.875rem;
  color: var(--color-gray-light);
  margin-top: 4px;
}

.news-item-content h3 {
  margin-bottom: var(--space-sm);
}

.news-item-content h3 a:hover {
  color: var(--color-primary);
}

.news-item-content p {
  color: var(--color-gray);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-tags {
  display: flex;
  gap: 8px;
}

.news-tag {
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.08);
  color: var(--color-primary);
  font-weight: 500;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-2xl);
}

.pagination a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-dark-2);
  transition: all var(--transition-fast);
}

.pagination a:hover,
.pagination a.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ==========================================================================
   19. 联系页面
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-2xl);
}

.contact-info-card {
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  color: #fff;
}

.contact-info-card h3 {
  color: #fff;
  margin-bottom: var(--space-lg);
}

.contact-info-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-info-list li:last-child {
  border-bottom: none;
}

.contact-info-list .icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-list .icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary-light);
}

.contact-info-list .label {
  font-size: 0.8125rem;
  color: var(--color-gray-light);
  margin-bottom: 4px;
}

.contact-info-list .value {
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-info-list .value a {
  color: #fff;
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-info-list .value a:hover {
  color: var(--color-primary-light);
}

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.contact-form h3 {
  margin-bottom: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark-2);
  margin-bottom: var(--space-xs);
}

.form-group label .required {
  color: #EF4444;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-dark);
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-primary);
  background: var(--color-bg);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-note {
  font-size: 0.8125rem;
  color: var(--color-gray-light);
  margin-top: var(--space-sm);
}

/* ==========================================================================
   20. 动画
   ========================================================================== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 滚动触发动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ==========================================================================
   21. 响应式设计
   ========================================================================== */
@media (max-width: 1024px) {
  .features-grid,
  .industries-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }

  .process-timeline::before {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 4rem;
    --space-4xl: 5rem;
  }

  .navbar-menu {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-lg);
    gap: var(--space-sm);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }

  .navbar-menu.active {
    transform: translateX(0);
  }

  .navbar-menu a {
    font-size: 1.125rem;
    padding: var(--space-sm) 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .navbar-toggle {
    display: flex;
  }

  .navbar-actions {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: calc(var(--navbar-height) + var(--space-2xl)) 0 var(--space-3xl);
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-lg);
  }

  .hero-stat .number {
    font-size: 2rem;
  }

  .features-grid,
  .industries-grid,
  .news-grid,
  .values-grid {
    grid-template-columns: 1fr;
  }

  .process-timeline {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-visual {
    min-height: 300px;
  }

  .news-item {
    grid-template-columns: 1fr;
  }

  .news-item-date {
    flex-direction: row;
    gap: var(--space-sm);
    justify-content: flex-start;
  }

  .news-item-date .day {
    font-size: 1.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .cta-actions {
    flex-direction: column;
  }

  .cta-actions .btn {
    width: 100%;
  }
}

/* ==========================================================================
   22. 工具类
   ========================================================================== */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none !important; }
.visible { display: block; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 打印优化 */
@media print {
  .navbar,
  .footer,
  .cta,
  .btn {
    display: none;
  }
}

/* 暗色模式预留 (未来扩展) */
@media (prefers-color-scheme: dark) {
  /* 预留: 未来可通过添加 .dark 类启用暗色模式 */
}

/* ==========================================================================
   23. 新闻详情页
   ========================================================================== */
.article-header {
  background: var(--color-bg);
  padding: calc(var(--navbar-height) + var(--space-xl)) 0 var(--space-lg);
}

.article-category {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.08);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}

.article-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  max-width: 900px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.9375rem;
  color: var(--color-gray);
}

.article-meta .author {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-meta .author-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.8125rem;
  flex-shrink: 0;
}

.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta .meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-gray-light);
}

.article-meta .divider {
  width: 1px;
  height: 16px;
  background: var(--color-border);
}

/* 封面图 */
.article-cover {
  margin-bottom: var(--space-2xl);
}

.article-cover .cover-inner {
  width: 100%;
  height: clamp(240px, 38vw, 460px);
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.article-cover .cover-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-cover .cover-placeholder {
  font-size: 5rem;
  opacity: 0.5;
}

/* 正文排版 */
.article-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.article-body > p {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--color-dark-2);
  margin-bottom: var(--space-md);
}

.article-body > p:first-of-type {
  font-size: 1.1875rem;
  line-height: 1.85;
  color: var(--color-dark);
}

.article-body h2 {
  font-size: 1.625rem;
  line-height: 1.35;
  margin: var(--space-2xl) 0 var(--space-md);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.article-body h3 {
  font-size: 1.25rem;
  line-height: 1.4;
  margin: var(--space-xl) 0 var(--space-sm);
}

.article-body ul,
.article-body ol {
  margin: 0 0 var(--space-md) var(--space-lg);
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-dark-2);
  margin-bottom: var(--space-sm);
  padding-left: 4px;
}

.article-body strong {
  color: var(--color-dark);
  font-weight: 700;
}

.article-body a.inline-link {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom: 1px solid rgba(99, 102, 241, 0.3);
}

.article-body a.inline-link:hover {
  border-bottom-color: var(--color-primary);
}

.article-body img {
  width: 100%;
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
}

.article-body figure {
  margin: var(--space-lg) 0;
}

.article-body figcaption {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-gray-light);
  margin-top: var(--space-xs);
}

.article-body blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 4px solid var(--color-primary);
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-dark);
  font-style: italic;
}

.article-body blockquote p {
  margin: 0;
}

.article-body .callout {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.06);
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.article-body .callout p {
  margin: 0;
  color: var(--color-dark-2);
}

.article-body .callout strong {
  color: var(--color-secondary-dark);
}

/* 文章正文表格 */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.article-body th,
.article-body td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  vertical-align: top;
}

.article-body th:last-child,
.article-body td:last-child {
  border-right: none;
}

.article-body tr:last-child td {
  border-bottom: none;
}

.article-body thead th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.article-body tbody tr:nth-child(even) {
  background: var(--color-bg-alt);
}

/* 文章正文清单（GEO 自检清单等） */
.article-body .checklist {
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
}

.article-body .checklist li {
  position: relative;
  padding: var(--space-xs) 0 var(--space-xs) 2rem;
  border-bottom: 1px dashed var(--color-border);
  line-height: 1.7;
}

.article-body .checklist li:last-child {
  border-bottom: none;
}

.article-body .checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: var(--space-xs);
  color: var(--color-secondary);
  font-weight: 700;
}

/* 文章底部：标签 + 分享 */
.article-footer-block {
  max-width: 760px;
  margin: var(--space-2xl) auto 0;
  padding: var(--space-xl) var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-lg);
}

.article-share {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.9375rem;
  color: var(--color-gray);
}

.article-share .share-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray);
  transition: all var(--transition-fast);
}

.article-share .share-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.article-share .share-btn svg {
  width: 18px;
  height: 18px;
}

/* 上一篇 / 下一篇 */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

.article-nav a {
  display: block;
  padding: var(--space-lg);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.article-nav a:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.article-nav .nav-label {
  font-size: 0.8125rem;
  color: var(--color-gray-light);
  margin-bottom: var(--space-xs);
}

.article-nav .nav-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  line-height: 1.5;
}

.article-nav .next {
  text-align: right;
}

/* 相关推荐 */
.related .section-header {
  margin-bottom: var(--space-xl);
}

.related .news-card .news-card-image .placeholder {
  background: var(--gradient-hero);
}

@media (max-width: 768px) {
  .article-nav {
    grid-template-columns: 1fr;
  }

  .article-nav .next {
    text-align: left;
  }
}