/* ==========================================================================
   白月光官网 (bygjc.my) - 专属“白月光”视觉设计系统与样式表
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  /* 白月光专属配色体系 */
  --bg-dark: #070913;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-card-hover: rgba(56, 189, 248, 0.35);

  --moon-white: #f8fafc;
  --moon-silver: #cbd5e1;
  --moon-subtext: #94a3b8;
  
  --glow-cyan: #38bdf8;
  --glow-blue: #60a5fa;
  --glow-indigo: #818cf8;
  --glow-purple: #c084fc;
  
  --accent-green: #34d399;
  --accent-yellow: #fbbf24;
  --accent-red: #f87171;

  --gradient-moon: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #38bdf8 100%);
  --gradient-glow: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);

  --font-main: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
}

/* 全局重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body.moon-body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--moon-silver);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动态背景 - 月华光晕与星光流影 */
body.moon-body::before {
  content: '';
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 800px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(129, 140, 248, 0.08) 40%, rgba(7, 9, 19, 0) 70%);
  pointer-events: none;
  z-index: -2;
}

.stars-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(1px 1px at 20px 30px, #ffffff 100%, transparent),
    radial-gradient(1.5px 1.5px at 150px 80px, #38bdf8 100%, transparent),
    radial-gradient(1px 1px at 300px 200px, #ffffff 100%, transparent),
    radial-gradient(2px 2px at 450px 120px, #818cf8 100%, transparent),
    radial-gradient(1px 1px at 600px 350px, #ffffff 100%, transparent),
    radial-gradient(1.5px 1.5px at 750px 250px, #38bdf8 100%, transparent),
    radial-gradient(1px 1px at 900px 80px, #ffffff 100%, transparent);
  background-size: 1000px 600px;
  opacity: 0.4;
  pointer-events: none;
  z-index: -1;
  animation: starsFloat 120s linear infinite;
}

@keyframes starsFloat {
  from { background-position: 0 0; }
  to { background-position: 1000px 600px; }
}

/* 通用容器 */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 排版样式 */
h1, h2, h3, h4 {
  color: var(--moon-white);
  font-weight: 700;
  line-height: 1.25;
}

h2.section-title {
  font-size: 2.25rem;
  text-align: center;
  margin-bottom: 12px;
  background: var(--gradient-moon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

p.section-subtitle {
  text-align: center;
  color: var(--moon-subtext);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto 48px auto;
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: var(--transition-fast);
  cursor: pointer;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--gradient-glow);
  color: #000000;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(56, 189, 248, 0.55);
}

.btn-glow {
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  color: #070913;
  font-weight: 700;
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.4);
}

.btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(255, 255, 255, 0.7);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--moon-white);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

/* 顶部导航栏 (Header) */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  transition: var(--transition-fast);
  backdrop-filter: blur(16px);
  background: rgba(7, 9, 19, 0.75);
  border-bottom: 1px solid var(--border-card);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1240px;
  margin: 0 auto;
  padding: 16px 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--moon-white);
}

.moon-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffffff 0%, #38bdf8 50%, #818cf8 100%);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.6);
  position: relative;
}

.moon-icon::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-dark);
  opacity: 0.15;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  color: var(--moon-silver);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--glow-cyan);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--glow-cyan);
  transition: var(--transition-fast);
  border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 8px 20px;
  font-size: 0.88rem;
}

/* 移动端菜单切换按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--moon-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* HERO 板块 */
.hero-section {
  padding: 160px 0 100px 0;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--glow-cyan);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #e2e8f0 60%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span {
  background: var(--gradient-glow);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--moon-subtext);
  max-width: 720px;
  margin: 0 auto 40px auto;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 24px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  max-width: 840px;
  margin: 0 auto;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--moon-white);
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--moon-subtext);
}

/* 核心优势板块 */
.section-advantages {
  padding: 100px 0;
}

.grid-advantages {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-glow);
  opacity: 0;
  transition: var(--transition-fast);
}

.advantage-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-card-hover);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(56, 189, 248, 0.15);
}

.advantage-card:hover::before {
  opacity: 1;
}

.advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 20px;
  color: var(--glow-cyan);
}

.advantage-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--moon-subtext);
  font-size: 0.95rem;
}

/* 节点延迟与状态板块 */
.section-nodes {
  padding: 100px 0;
  background: radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.8) 0%, rgba(7, 9, 19, 1) 100%);
}

.nodes-header-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.node-filter-tabs {
  display: flex;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
}

.tab-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: none;
  border: none;
  color: var(--moon-silver);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn.active, .tab-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--moon-white);
}

.ping-refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--glow-cyan);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.ping-refresh-btn:hover {
  background: rgba(56, 189, 248, 0.2);
}

.grid-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.node-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition-fast);
}

.node-card:hover {
  border-color: var(--border-card-hover);
  background: var(--bg-card-hover);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.node-flag {
  font-size: 1.5rem;
}

.node-name {
  font-weight: 600;
  color: var(--moon-white);
  font-size: 0.95rem;
  display: block;
}

.node-type {
  font-size: 0.75rem;
  color: var(--moon-subtext);
}

.node-ping-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
}

.ping-green {
  background: rgba(52, 211, 153, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.ping-yellow {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-yellow);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

/* 套餐价格板块 */
.section-pricing {
  padding: 100px 0;
}

.pricing-toggle-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
}

.pricing-toggle-label {
  font-size: 0.95rem;
  color: var(--moon-silver);
}

.pricing-discount-tag {
  background: linear-gradient(135deg, #f87171, #ef4444);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.grid-pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 24px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-smooth);
}

.pricing-card.popular {
  border-color: var(--glow-cyan);
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.12) 0%, rgba(15, 23, 42, 0.8) 100%);
  box-shadow: 0 10px 40px rgba(56, 189, 248, 0.2);
  transform: scale(1.03);
}

.pricing-card:hover {
  transform: translateY(-8px);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-glow);
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.pricing-plan-name {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.pricing-plan-desc {
  font-size: 0.85rem;
  color: var(--moon-subtext);
  margin-bottom: 24px;
  min-height: 40px;
}

.pricing-price-box {
  margin-bottom: 24px;
}

.pricing-price {
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--moon-white);
}

.pricing-currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--glow-cyan);
}

.pricing-period {
  font-size: 0.88rem;
  color: var(--moon-subtext);
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--moon-silver);
  margin-bottom: 12px;
}

.check-icon {
  color: var(--glow-cyan);
  font-weight: 800;
}

/* 用户评价板块 */
.section-testimonials {
  padding: 100px 0;
}

.grid-testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-fast);
}

.testimonial-card:hover {
  border-color: var(--border-card-hover);
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #000;
  font-size: 1.1rem;
}

.user-meta h4 {
  font-size: 1rem;
}

.user-role {
  font-size: 0.78rem;
  color: var(--moon-subtext);
}

.rating-stars {
  color: var(--accent-yellow);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--moon-silver);
  line-height: 1.6;
}

/* 知识库与教程板块 (8篇文章网格) */
.section-tutorials {
  padding: 100px 0;
  background: rgba(15, 23, 42, 0.4);
}

.grid-articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
}

.article-card-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.article-card-item:hover {
  border-color: var(--glow-cyan);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.15);
}

.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--glow-cyan);
  background: rgba(56, 189, 248, 0.12);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  width: fit-content;
}

.article-card-item h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-card-item p {
  font-size: 0.88rem;
  color: var(--moon-subtext);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-link-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.read-btn {
  color: var(--glow-cyan);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-btn:hover {
  text-decoration: underline;
}

/* FAQ 常见问题板块 */
.section-faq {
  padding: 100px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  color: var(--moon-white);
  user-select: none;
}

.faq-toggle-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--glow-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--moon-subtext);
  font-size: 0.95rem;
}

.faq-item.open .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px 24px;
}

/* 页脚 Footer */
.footer {
  background: #03040a;
  border-top: 1px solid var(--border-card);
  padding: 80px 0 30px 0;
}

.footer-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-col p {
  color: var(--moon-subtext);
  font-size: 0.88rem;
  margin-top: 16px;
  max-width: 380px;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--moon-white);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--moon-subtext);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--moon-subtext);
  font-size: 0.82rem;
}

/* 独立文章页页面专属样式 */
.article-page-container {
  padding: 140px 0 80px 0;
  max-width: 960px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.breadcrumb {
  margin-bottom: 24px;
  font-size: 0.88rem;
  color: var(--moon-subtext);
}

.breadcrumb a {
  color: var(--glow-cyan);
  text-decoration: none;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(16px);
}

.article-title {
  font-size: 2.25rem;
  margin-bottom: 16px;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--moon-subtext);
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-card);
  flex-wrap: wrap;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 32px 0 16px 0;
  color: var(--glow-cyan);
}

.article-content p {
  margin-bottom: 16px;
  line-height: 1.8;
  color: var(--moon-silver);
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
  color: var(--moon-silver);
}

.article-content li {
  margin-bottom: 8px;
}

.callout-box {
  background: rgba(56, 189, 248, 0.08);
  border-left: 4px solid var(--glow-cyan);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  color: var(--moon-silver);
  font-size: 0.95rem;
}

.text-link {
  color: var(--glow-cyan);
  text-decoration: underline;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15) 0%, rgba(129, 140, 248, 0.15) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  margin: 36px 0;
}

.cta-banner h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.cta-banner p {
  color: var(--moon-silver);
  margin-bottom: 20px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
}

.data-table th, .data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-card);
  font-size: 0.9rem;
}

.data-table th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--moon-white);
}

.article-footer-nav {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-card);
}

.article-footer-nav h3 {
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.related-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.related-links-grid a {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-card);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--moon-silver);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition-fast);
}

.related-links-grid a:hover {
  border-color: var(--glow-cyan);
  color: var(--glow-cyan);
}

/* 模态框 (Modal for Fast Reading) */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(7, 9, 19, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-dark);
  border: 1px solid var(--glow-cyan);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 800px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 36px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--moon-white);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.75rem; }
  .footer-container { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: block; }
  .hero-title { font-size: 2.25rem; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .article-card { padding: 24px; }
  .article-title { font-size: 1.75rem; }
  .grid-articles { grid-template-columns: 1fr; }
}