/* ==========================================================================
   隐云机场 (YINYUN AIRPORT) - Blind Watermark & Shadow-Free Monolith Design System
   极简视网膜单色水印：纯白纸面盲压与自然光折射 (纯净无Emoji、超高清强对比度版)
   ========================================================================== */

:root {
  --bg-pulp: #FCFCFD;
  --bg-paper-light: #FFFFFF;
  --bg-paper-subtle: #F6F7F9;
  --text-main: #1C1E22;
  --text-muted: #4A4D53;
  --text-dim: #767B85;
  --accent-cyan: #0A84FF;
  --accent-emerald: #248A3D;
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-press: rgba(0, 0, 0, 0.1);
  --shadow-blind-emboss: 1px 1px 3px rgba(255, 255, 255, 0.9), -1px -1px 3px rgba(0, 0, 0, 0.04);
  --shadow-float: 0 12px 32px rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.02);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --cursor-x: 50%;
  --cursor-y: 50%;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-pulp);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background-color: var(--bg-pulp);
}

/* 视网膜光折射跟随层 */
.light-refractor {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
  background: radial-gradient(
    600px circle at var(--cursor-x) var(--cursor-y),
    rgba(255, 255, 255, 0.45),
    rgba(235, 238, 245, 0.08) 40%,
    transparent 80%
  );
  mix-blend-mode: overlay;
}

/* 全局盲压水印背景大字 - 确保极浅且位于底层，不遮挡任何正文文字 */
.watermark-bg-text {
  position: fixed;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(6rem, 16vw, 20rem);
  font-weight: 900;
  letter-spacing: 0.1em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 0, 0, 0.018);
  user-select: none;
  pointer-events: none;
  white-space: nowrap;
  z-index: -10;
  opacity: 0.6;
}

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

/* 导航栏 Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(252, 252, 253, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 2rem;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.brand-icon-watermark {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-paper-light);
  box-shadow: var(--shadow-blind-emboss);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--text-main);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--text-main);
  transition: var(--transition);
  border-radius: 2px;
}

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

.nav-cta-btn {
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  background: var(--text-main);
  color: #FFFFFF !important;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  opacity: 0.95;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-main);
}

/* 按钮与卡片 - 盲压与纸面质感 */
.btn-blind-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 2.2rem;
  border-radius: 999px;
  background: var(--text-main);
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  transition: var(--transition);
}

.btn-blind-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.18);
}

.btn-blind-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 2.2rem;
  border-radius: 999px;
  background: var(--bg-paper-light);
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 600;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  cursor: pointer;
  transition: var(--transition);
}

.btn-blind-secondary:hover {
  transform: translateY(-2px);
  background: #FFFFFF;
  border-color: rgba(0,0,0,0.12);
  box-shadow: 0 6px 20px rgba(0,0,0,0.06);
}

.monolith-card {
  background: var(--bg-paper-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 2.2rem;
  position: relative;
  box-shadow: var(--shadow-blind-emboss);
  transition: var(--transition);
  z-index: 1;
}

.monolith-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
  border-color: rgba(0,0,0,0.1);
}

/* 布局 Layout */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-block;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  background: var(--bg-paper-light);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 首屏 Hero */
.hero {
  padding: 6rem 0 4rem 0;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.12;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.hero-title .highlight-watermark {
  color: var(--text-main);
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  font-weight: 400;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.hero-badge-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-sm);
  background: var(--bg-paper-light);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hero-badge-item .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  align-items: center;
}

/* 测速组件 Speed Widget */
.speed-widget {
  background: var(--bg-paper-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-float);
  padding: 2rem;
  position: relative;
}

.speed-widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.speed-widget-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: rgba(36, 138, 61, 0.1);
  color: var(--accent-emerald);
  font-size: 0.75rem;
  font-weight: 700;
}

.live-indicator::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--bg-paper-subtle);
  border: 1px solid var(--border-subtle);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.node-code {
  font-size: 0.8rem;
  font-weight: 800;
  font-family: var(--font-mono);
  padding: 0.2rem 0.5rem;
  background: var(--bg-paper-light);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--text-main);
}

.node-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

.node-type {
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 0.15rem 0.4rem;
  background: rgba(0,0,0,0.04);
  border-radius: 4px;
}

.node-metrics {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.metric-ping {
  color: var(--accent-emerald);
  font-weight: 700;
}

.metric-speed {
  font-weight: 700;
  color: var(--text-main);
}

.speed-wave-canvas {
  width: 100%;
  height: 100px;
  background: var(--bg-paper-subtle);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

/* 核心优势 Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-dim);
  margin-bottom: 1rem;
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: var(--bg-paper-subtle);
  border: 1px solid var(--border-subtle);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.feature-desc {
  color: var(--text-muted);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* 套餐价格 Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: var(--radius-lg);
  background: var(--bg-paper-light);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  padding: 2.5rem;
  position: relative;
  transition: var(--transition);
}

.pricing-card.featured {
  border: 2px solid var(--text-main);
  box-shadow: var(--shadow-float);
}

.featured-badge {
  position: absolute;
  top: -14px;
  right: 2rem;
  background: var(--text-main);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.9rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.price-amount {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--text-main);
}

.price-period {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2.2rem;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-feature-item .check-bullet {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-main);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 900;
  flex-shrink: 0;
}

/* 适合人群 Audience */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.audience-card {
  padding: 1.8rem;
  background: var(--bg-paper-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  transition: var(--transition);
}

.audience-tag {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.audience-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.audience-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 教程入口 Tutorials */
.tutorial-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

.tutorial-card {
  background: var(--bg-paper-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.tutorial-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  background: var(--bg-paper-subtle);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.tutorial-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.tutorial-steps-summary {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 1.2rem 0 2rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.tutorial-steps-summary li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tutorial-steps-summary li::before {
  content: '→';
  font-weight: 800;
  color: var(--text-main);
}

/* 用户评价 Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.8rem;
}

.review-card {
  background: var(--bg-paper-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.avatar-watermark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-paper-subtle);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-main);
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.author-info p {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* FAQ 常见问题手风琴 */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: relative;
  z-index: 2;
}

.faq-item {
  background: var(--bg-paper-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  overflow: hidden;
  transition: var(--transition);
}

.faq-header {
  width: 100%;
  padding: 1.4rem 1.8rem;
  background: var(--bg-paper-light);
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-icon {
  font-size: 0.9rem;
  font-weight: 800;
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.35s ease;
  padding: 0 1.8rem;
  color: #2D3139;
  font-size: 0.98rem;
  line-height: 1.75;
  background: var(--bg-paper-light);
}

.faq-item.active .faq-body {
  max-height: 600px;
  padding: 0 1.8rem 1.6rem 1.8rem;
}

/* 文章目录 Catalog */
.articles-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.8rem;
}

.article-card-item {
  background: var(--bg-paper-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-blind-emboss);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
}

.article-meta-info {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 0.8rem;
}

.article-item-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.8rem;
  color: var(--text-main);
}

.article-item-title a {
  color: var(--text-main);
  transition: var(--transition);
}

.article-item-title a:hover {
  color: var(--accent-cyan);
}

.article-item-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.article-read-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ==========================================================================
   文章与教程详情页 - 修正覆盖与遮挡 Bug，确保 100% 独立高对比度背景
   ========================================================================== */
.article-detail-container {
  max-width: 900px;
  margin: 3rem auto;
  padding: 2.5rem;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-blind-emboss);
  border: 1px solid var(--border-subtle);
  position: relative;
  z-index: 5; /* 确保置顶，绝不被水印背景覆盖 */
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.breadcrumb-nav a {
  color: var(--text-muted);
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--border-subtle);
}

.article-header-h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text-main) !important;
  opacity: 1 !important;
}

.article-content-body {
  font-size: 1.05rem;
  line-height: 1.9;
  color: #2D3139 !important;
}

.article-content-body h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 2.8rem 0 1.2rem 0;
  letter-spacing: -0.02em;
  color: var(--text-main) !important;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2rem 0 1rem 0;
  color: var(--text-main) !important;
}

.article-content-body p {
  margin-bottom: 1.6rem;
  color: #2D3139 !important;
}

.article-content-body b, .article-content-body strong {
  font-weight: 700;
  color: var(--text-main) !important;
}

.article-content-body ul, .article-content-body ol {
  margin: 1rem 0 1.8rem 1.8rem;
}

.article-content-body li {
  margin-bottom: 0.8rem;
  color: #2D3139 !important;
}

.article-content-body blockquote {
  padding: 1.2rem 1.6rem;
  border-left: 3px solid var(--text-main);
  background: var(--bg-paper-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 2rem 0;
  color: var(--text-muted);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-blind-emboss);
  border: 1px solid var(--border-subtle);
}

.article-table th, .article-table td {
  padding: 1rem 1.2rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
}

.article-table th {
  background: var(--bg-paper-subtle);
  font-weight: 700;
}

.code-block-box {
  background: #18191B;
  color: #E2E4E8;
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  overflow-x: auto;
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.8rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-size: 0.78rem;
  color: #8E939E;
}

.copy-code-btn {
  background: rgba(255,255,255,0.1);
  color: #FFF;
  border: none;
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
}

/* 页脚 Footer */
.footer {
  background: var(--bg-paper-light);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2.5rem 0;
  margin-top: 5rem;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-column h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  color: var(--text-main);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-main);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Toast 提示 */
.toast-notice {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--text-main);
  color: #FFFFFF;
  padding: 0.9rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  z-index: 10000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* 响应式 Responsive */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .article-detail-container {
    padding: 1.5rem;
    margin: 1.5rem auto;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(252, 252, 253, 0.98);
    padding: 1.5rem;
    flex-direction: column;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-float);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}