/* ==========================================================================
   银河云机场 (yinheyunjc.homes) - 官方落地页与知识库 Soft UI 样式表
   风格参考图1 (Soft UI 温和友好设计) & 图2 (三列套餐卡片规范)
   ========================================================================== */

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-glow: rgba(37, 99, 235, 0.18);
  --accent-purple: #7c3aed;
  --accent-cyan: #06b6d4;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-soft: #f1f5f9;
  --border-color: #e2e8f0;
  --border-soft: rgba(226, 232, 240, 0.8);
  
  /* Soft UI 阴影系统 (参考图1温和立体光影) */
  --soft-shadow-sm: 0 4px 12px rgba(148, 163, 184, 0.12), 0 1px 3px rgba(148, 163, 184, 0.08);
  --soft-shadow: 0 10px 25px -5px rgba(148, 163, 184, 0.18), 0 8px 10px -6px rgba(148, 163, 184, 0.1);
  --soft-shadow-lg: 0 20px 35px -10px rgba(148, 163, 184, 0.22), 0 12px 16px -8px rgba(148, 163, 184, 0.12);
  --soft-shadow-hover: 0 25px 50px -12px rgba(37, 99, 235, 0.16);
  --soft-inset: inset 2px 2px 5px rgba(148, 163, 184, 0.15), inset -2px -2px 5px rgba(255, 255, 255, 0.8);
  
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动态点缀：银河宇宙星光与柔和微光浮动 */
.galaxy-canvas-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.75;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: floatOrb 16s ease-in-out infinite alternate;
}

.glow-orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(239, 246, 255, 0) 70%);
  top: -100px;
  left: 10%;
}

.glow-orb-2 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, rgba(239, 246, 255, 0) 70%);
  top: 30%;
  right: 5%;
  animation-duration: 20s;
  animation-delay: -5s;
}

.glow-orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, rgba(239, 246, 255, 0) 70%);
  bottom: 10%;
  left: 20%;
  animation-duration: 22s;
  animation-delay: -10s;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -40px) scale(1.08); }
  100% { transform: translate(-25px, 35px) scale(0.96); }
}

/* 容器与布局 */
.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 导航栏 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: var(--transition);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.logo-badge {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, #4f46e5 0%, #2563eb 50%, #06b6d4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  color: #fff;
  font-size: 1.4rem;
}

.logo-badge svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.brand-text span {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 按钮风格 - 图1 Soft UI 软胶囊按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-soft {
  background: #f1f5f9;
  color: #334155;
  box-shadow: 0 3px 8px rgba(148, 163, 184, 0.2);
}

.btn-soft:hover {
  background: #e2e8f0;
  color: #0f172a;
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-main);
}

/* Hero 首屏 */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(3, 105, 161, 0.08);
}

.hero-pill .pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #0284c7;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(2, 132, 199, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 8px rgba(2, 132, 199, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(2, 132, 199, 0); }
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: #0f172a;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #2563eb 20%, #7c3aed 70%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-tag {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: #475569;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 2px 6px rgba(148, 163, 184, 0.06);
}

.hero-tag svg {
  color: #10b981;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  margin-bottom: 50px;
}

/* 图1 Soft UI 预览组件式特色卡片 */
.soft-ui-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--soft-shadow);
  border: 1px solid var(--border-soft);
  transition: var(--transition);
}

.soft-ui-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--soft-shadow-hover);
}

/* 核心卖点 & 节点优势卡片网格 */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-tag {
  text-transform: uppercase;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--primary);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid #eef2f6;
  box-shadow: var(--soft-shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #3b82f6, #8b5cf6);
  opacity: 0;
  transition: var(--transition);
}

.feature-box:hover {
  transform: translateY(-6px);
  box-shadow: var(--soft-shadow-hover);
  border-color: #dbeafe;
}

.feature-box:hover::before {
  opacity: 1;
}

.feature-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: #eff6ff;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 22px;
  box-shadow: inset 1px 1px 3px rgba(255, 255, 255, 0.8), 0 4px 10px rgba(37, 99, 235, 0.1);
}

.feature-box h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #0f172a;
}

.feature-box p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* ==========================================================================
   套餐卡片 - 像素级精准还原 图2 (轻量套餐、星尘套餐、行星套餐)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
  margin-top: 20px;
}

.pricing-card {
  background: #ffffff;
  border-radius: 28px;
  border: 1px solid #e2e8f0;
  padding: 44px 34px 38px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 4px 16px rgba(148, 163, 184, 0.08);
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(148, 163, 184, 0.16);
}

/* 中间高亮热门推荐卡片 (图2核心) */
.pricing-card.featured {
  border: 2px solid #2563eb;
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.14);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-4px);
  box-shadow: 0 24px 48px rgba(37, 99, 235, 0.22);
}

.pricing-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: #0284c7;
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
  display: flex;
  align-items: center;
  gap: 5px;
}

.pricing-card .plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 24px;
}

.pricing-card .price-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 34px;
}

.pricing-card .price-amount {
  font-size: 2.85rem;
  font-weight: 900;
  color: #2563eb;
  line-height: 1;
}

.pricing-card .price-period {
  font-size: 1.15rem;
  font-weight: 600;
  color: #64748b;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 40px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.98rem;
  font-weight: 600;
  color: #1e293b;
}

.check-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #10b981;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.check-icon svg {
  width: 12px;
  height: 12px;
  stroke: #ffffff;
  stroke-width: 3;
  fill: none;
}

.pricing-card .btn {
  width: 100%;
  padding: 14px 20px;
  font-size: 1.05rem;
  border-radius: var(--radius-full);
}

.pricing-card:not(.featured) .btn {
  border: 1.5px solid #2563eb;
  color: #2563eb;
  background: transparent;
}

.pricing-card:not(.featured) .btn:hover {
  background: #eff6ff;
  border-color: #1d4ed8;
  color: #1d4ed8;
}

.pricing-card.featured .btn {
  background: #0284c7;
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.35);
}

.pricing-card.featured .btn:hover {
  background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 100%);
  box-shadow: 0 8px 25px rgba(2, 132, 199, 0.45);
}

/* ==========================================================================
   知识库文章展示区
   ========================================================================== */
.articles-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid #eef2f6;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--soft-shadow-sm);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--soft-shadow-hover);
  border-color: #bfdbfe;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 0.85rem;
  color: var(--text-light);
}

.article-tag {
  background: #eff6ff;
  color: var(--primary);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
}

.article-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-link-text {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   40个常见问题 FAQ 模块 (手风琴 + 筛选 + 搜索)
   ========================================================================== */
.faq-search-box {
  max-width: 580px;
  margin: 0 auto 30px;
  position: relative;
}

.faq-search-input {
  width: 100%;
  padding: 16px 24px 16px 52px;
  border-radius: var(--radius-full);
  border: 1.5px solid #cbd5e1;
  background: #ffffff;
  font-size: 1rem;
  color: #1e293b;
  outline: none;
  box-shadow: var(--soft-shadow-sm);
  transition: var(--transition);
}

.faq-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.faq-search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: #94a3b8;
  font-size: 1.2rem;
}

.faq-categories {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.faq-cat-btn {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
  transition: var(--transition);
}

.faq-cat-btn:hover,
.faq-cat-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 960px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid #e2e8f0;
  box-shadow: var(--soft-shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  cursor: pointer;
}

.faq-question-text {
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-num {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--primary);
  background: #eff6ff;
  padding: 3px 8px;
  border-radius: 6px;
}

.faq-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  transition: transform 0.3s ease;
  font-size: 1.2rem;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 24px;
  color: #475569;
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding-bottom: 22px;
}

/* ==========================================================================
   全平台客户端支持模块
   ========================================================================== */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.platform-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid #e2e8f0;
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--soft-shadow-sm);
  transition: var(--transition);
}

.platform-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--soft-shadow-hover);
}

.platform-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.platform-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #0f172a;
}

.platform-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   CTA 注册唤醒横幅
   ========================================================================== */
.cta-banner {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #4f46e5 100%);
  border-radius: 32px;
  padding: 60px 48px;
  color: #ffffff;
  text-align: center;
  box-shadow: 0 25px 60px -15px rgba(37, 99, 235, 0.45);
  position: relative;
  overflow: hidden;
  margin: 40px 0;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: 2.4rem;
  font-weight: 900;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 1.15rem;
  max-width: 680px;
  margin: 0 auto 32px;
  opacity: 0.9;
}

.cta-banner .btn-white {
  background: #ffffff;
  color: #1e3a8a;
  font-size: 1.1rem;
  font-weight: 800;
  padding: 16px 36px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-banner .btn-white:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Footer 页脚
   ========================================================================== */
.site-footer {
  background: #ffffff;
  border-top: 1px solid #e2e8f0;
  padding: 70px 0 30px;
  margin-top: 80px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 16px;
  line-height: 1.7;
  max-width: 360px;
}

.footer-col h5 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid #f1f5f9;
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--text-light);
}

.footer-seo-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.footer-seo-tags span {
  font-size: 0.8rem;
  color: #94a3b8;
  background: #f8fafc;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

/* ==========================================================================
   文章详情页专有排版样式 (Soft UI 风格, 深度SEO与内链)
   ========================================================================== */
.article-header {
  padding: 60px 0 30px;
  text-align: center;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 20px;
}

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

.article-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.3;
  color: #0f172a;
  max-width: 960px;
  margin: 0 auto 20px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.article-main-container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  margin-top: 30px;
}

.article-content {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid #e2e8f0;
  padding: 48px;
  box-shadow: var(--soft-shadow-sm);
  font-size: 1.05rem;
  line-height: 1.85;
  color: #334155;
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: #0f172a;
  margin: 44px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #f1f5f9;
  position: relative;
}

.article-content h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--primary);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #1e293b;
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, 
.article-content ol {
  margin: 16px 0 24px 24px;
}

.article-content li {
  margin-bottom: 10px;
}

.article-content strong {
  color: #0f172a;
  font-weight: 700;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}

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

.article-content blockquote {
  background: #eff6ff;
  border-left: 4px solid var(--primary);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 28px 0;
  color: #1e40af;
  font-style: normal;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  font-size: 0.95rem;
}

.article-content th, 
.article-content td {
  padding: 14px 18px;
  border: 1px solid #e2e8f0;
  text-align: left;
}

.article-content th {
  background: #f8fafc;
  color: #0f172a;
  font-weight: 700;
}

.article-content tr:nth-child(even) {
  background: #fbfcfe;
}

.article-callout {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 32px 0;
  color: #166534;
}

.article-callout h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 侧边栏 */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid #e2e8f0;
  padding: 24px;
  box-shadow: var(--soft-shadow-sm);
}

.sidebar-widget h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.sidebar-widget h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 2px;
  background: var(--primary);
}

.sidebar-toc {
  position: sticky;
  top: 96px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toc-list a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.4;
  transition: var(--transition);
  display: block;
  padding-left: 8px;
  border-left: 2px solid transparent;
}

.toc-list a:hover {
  color: var(--primary);
  border-left-color: var(--primary);
  padding-left: 12px;
}

.sidebar-article-link {
  text-decoration: none;
  display: block;
  padding: 10px 0;
  border-bottom: 1px dashed #e2e8f0;
  color: #334155;
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.45;
  transition: var(--transition);
}

.sidebar-article-link:hover {
  color: var(--primary);
}

/* 文章专属评论与用户评价区 */
.article-reviews-section {
  margin-top: 50px;
  padding-top: 36px;
  border-top: 2px solid #f1f5f9;
}

.reviews-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.reviews-rating-overall {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #0f172a;
}

.stars {
  color: #f59e0b;
}

.review-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 18px;
}

.review-author-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.review-author {
  font-weight: 700;
  color: #1e293b;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.verified-badge {
  font-size: 0.75rem;
  background: #dcfce7;
  color: #15803d;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.review-date {
  font-size: 0.82rem;
  color: var(--text-light);
}

.review-text {
  font-size: 0.93rem;
  color: #475569;
  line-height: 1.6;
}

/* 响应式样式 */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 30px auto 0;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .platforms-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .article-main-container {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.3rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .nav-links {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .grid-3, .grid-4, .articles-preview-grid, .platforms-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .article-content {
    padding: 26px 18px;
  }
  .article-title {
    font-size: 1.8rem;
  }
}