/* TAG VPN (tagvpn.sbs) 官方落地页样式表 - 高级科技奢华版 */

:root {
  /* 基础与高级色调 (消除红色，采用翡翠绿、电极青、深邃紫与金琥珀) */
  --primary-color: #10b981;        /* 翡翠绿 */
  --primary-hover: #059669;
  --primary-glow: rgba(16, 185, 129, 0.25);

  --accent-cyan: #06b6d4;         /* 电极青 */
  --accent-cyan-glow: rgba(6, 182, 212, 0.3);
  --accent-indigo: #6366f1;       /* 靛蓝 */
  --accent-purple: #8b5cf6;       /* 极光紫 */
  --accent-gold: #f59e0b;         /* 琥珀金 */

  /* 深色奢华背景 */
  --bg-dark: #07090e;
  --bg-darker: #040609;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-header: rgba(7, 9, 14, 0.82);

  /* 高高级字色 */
  --text-main: #f8fafc;
  --text-sub: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dark-muted: #64748b;

  /* 边框与光影 */
  --border-color: rgba(255, 255, 255, 0.07);
  --border-active: rgba(6, 182, 212, 0.4);
  --border-emerald: rgba(16, 185, 129, 0.4);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow-cyan: 0 0 35px rgba(6, 182, 212, 0.25);
  --shadow-glow-emerald: 0 0 35px rgba(16, 185, 129, 0.25);

  --font-main: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  letter-spacing: -0.2px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

ul {
  list-style: none;
}

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

/* 容器与版式规范 */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 移除红色，全面采用青/翡翠/靛蓝高端渐变 */
.btn-primary {
  background: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  color: #040914;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(6, 182, 212, 0.55);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-recommend {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-recommend:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(139, 92, 246, 0.5);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.88rem;
}

/* 导航栏 Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-header);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
}

.brand-logo img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.brand-title span {
  background: linear-gradient(135deg, #38bdf8 0%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: var(--text-sub);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width 0.3s ease;
  border-radius: 2px;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

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

/* 升级版 Hero 区域 (左右非对称高奢排版) */
.hero-section {
  padding: 160px 0 100px;
  position: relative;
  background: 
    radial-gradient(ellipse at 20% 0%, rgba(6, 182, 212, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(139, 92, 246, 0.12) 0%, transparent 60%),
    var(--bg-dark);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-full);
  color: #38bdf8;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary-color);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary-color);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
  100% { opacity: 1; transform: scale(1); }
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 22px;
  letter-spacing: -1.5px;
}

.gradient-text-cyan {
  background: linear-gradient(135deg, #38bdf8 0%, #34d399 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 620px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 40px;
}

/* 右侧英雄小部件：实时测速面板 */
.hero-widget {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-glow-cyan);
}

.widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.widget-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.widget-live-tag {
  font-size: 0.75rem;
  color: var(--primary-color);
  background: rgba(16, 185, 129, 0.15);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.ping-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ping-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.25);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.ping-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
}

.ping-value {
  font-family: monospace;
  font-size: 0.88rem;
  color: var(--primary-color);
  background: rgba(16, 185, 129, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* 统计数据横条 */
.hero-stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 50px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.stat-card-clean {
  text-align: left;
}

.stat-number-clean {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label-clean {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 通用 Section 样式 */
.section {
  padding: 100px 0;
  position: relative;
}

.section-alt {
  background-color: rgba(15, 23, 42, 0.4);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.section-tag {
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
  background: rgba(6, 182, 212, 0.1);
  padding: 4px 14px;
  border-radius: var(--radius-full);
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -0.8px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

/* 新增对比模块: TAG 专线 vs 传统便宜直连 */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.comp-card {
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
}

.comp-card.tag-winner {
  border-color: var(--accent-cyan);
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.08) 0%, rgba(15, 23, 42, 0.8) 100%);
  box-shadow: var(--shadow-glow-cyan);
}

.comp-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.comp-title {
  font-size: 1.35rem;
  font-weight: 700;
}

.comp-tag {
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.comp-tag.tag-tag {
  background: var(--accent-cyan);
  color: #040914;
}

.comp-tag.cheap-tag {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.comp-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 0.95rem;
  color: var(--text-sub);
}

.comp-list li i.check {
  color: var(--primary-color);
  font-size: 1.1rem;
  margin-top: 2px;
}

.comp-list li i.cross {
  color: var(--text-dark-muted);
  font-size: 1.1rem;
  margin-top: 2px;
}

/* 核心优势网格 Feature Grid (错落有致) */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card-lux {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.feature-card-lux::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.feature-card-lux:hover {
  transform: translateY(-6px);
  border-color: var(--border-active);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card);
}

.feature-card-lux:hover::before {
  opacity: 1;
}

.feature-icon-lux {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.feature-card-lux h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card-lux p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 节点矩阵 Node Filtering Cards */
.nodes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.node-item-lux {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 22px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.3s ease;
}

.node-item-lux:hover {
  border-color: var(--border-emerald);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.node-flag-lux {
  font-size: 2.2rem;
  line-height: 1;
}

.node-name-lux {
  font-weight: 700;
  font-size: 1.02rem;
  margin-bottom: 2px;
}

.node-type-badge {
  font-size: 0.72rem;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

/* 4 步快速上手路线图 Timeline */
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  position: relative;
}

.step-number {
  font-size: 2.8rem;
  font-weight: 900;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.05) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* 套餐定价方案 Pricing Cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pricing-card-lux {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.35s ease;
}

.pricing-card-lux.popular {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.1) 0%, var(--bg-card) 100%);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  color: #040914;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--radius-full);
}

.plan-title-lux {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.plan-sub-lux {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 42px;
}

.plan-price-lux {
  margin-bottom: 28px;
}

.price-main {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -1px;
}

.price-cycle {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plan-feature-list {
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-list li {
  font-size: 0.9rem;
  color: var(--text-sub);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.plan-feature-list li i {
  color: var(--primary-color);
  font-size: 0.9rem;
}

/* SEO 文章部分 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.article-card-lux {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.35s ease;
}

.article-card-lux:hover {
  transform: translateY(-6px);
  border-color: var(--border-active);
  box-shadow: var(--shadow-card);
}

.article-category-tag {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.12);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 14px;
  font-weight: 600;
}

.article-card-lux h3 {
  font-size: 1.18rem;
  margin-bottom: 12px;
  line-height: 1.45;
  font-weight: 700;
}

.article-desc-clean {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-foot-meta {
  font-size: 0.82rem;
  color: var(--text-dark-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

/* 手风琴 FAQ */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

.faq-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-box.active {
  border-color: var(--accent-cyan);
}

.faq-head {
  padding: 22px 28px;
  font-size: 1.08rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-toggle-icon {
  color: var(--accent-cyan);
  transition: transform 0.35s ease;
}

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

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
  background: rgba(0, 0, 0, 0.25);
}

.faq-body-inner {
  padding: 22px 28px;
  color: var(--text-sub);
  font-size: 0.98rem;
  line-height: 1.8;
}

.faq-box.active .faq-body {
  max-height: 1000px;
  transition: max-height 0.6s cubic-bezier(1, 0, 1, 0);
}

/* 用户评价 Review */
.reviews-grid-lux {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-box-lux {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
}

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

.review-avatar-circle {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, #06b6d4, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
}

.review-user-meta h4 {
  font-size: 0.98rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.review-user-meta span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.review-star-rating {
  color: var(--accent-gold);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.review-quote-text {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* 页脚 Footer & PBN 输血管道区 */
.site-footer {
  background-color: var(--bg-darker);
  border-top: 1px solid var(--border-color);
  padding: 70px 0 36px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

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

.footer-nav-col h4 {
  color: var(--text-main);
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 18px;
}

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

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

/* 【核心任务 2：低调美观友情链接输血管道区】 */
.footer-pbn-area {
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  padding-top: 26px;
  margin-top: 26px;
  text-align: center;
}

.pbn-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 0.84rem;
  color: #64748b;
}

.pbn-label {
  color: #94a3b8;
  font-weight: 500;
}

.pbn-link {
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.25s ease;
  padding: 2px 6px;
}

.pbn-link:hover {
  color: var(--accent-cyan);
}

.footer-bottom-copy {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  margin-top: 24px;
  font-size: 0.82rem;
  color: var(--text-dark-muted);
}

/* 文章详情页专用排版 */
.article-header {
  padding: 150px 0 50px;
  background: radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.12) 0%, var(--bg-dark) 75%);
}

.breadcrumbs {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumbs a:hover {
  color: var(--accent-cyan);
}

.article-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.article-post-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  padding: 50px 0 100px;
}

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  color: #e2e8f0;
  font-size: 1.06rem;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.75rem;
  color: var(--text-main);
  margin: 40px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  letter-spacing: -0.5px;
}

.article-content h3 {
  font-size: 1.38rem;
  color: var(--text-main);
  margin: 30px 0 16px;
}

.article-content p {
  margin-bottom: 22px;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 26px;
}

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

.article-content blockquote {
  background: rgba(6, 182, 212, 0.08);
  border-left: 4px solid var(--accent-cyan);
  padding: 18px 24px;
  margin: 28px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #cbd5e1;
}

.article-content a {
  color: #38bdf8;
  text-decoration: underline;
}

.article-content a:hover {
  color: #7dd3fc;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(99, 102, 241, 0.15) 100%);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 34px;
  text-align: center;
  margin: 44px 0;
}

.article-cta-box h3 {
  margin-top: 0;
  font-size: 1.45rem;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
}

.sidebar-widget h4 {
  font-size: 1.12rem;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.related-posts li {
  margin-bottom: 14px;
}

.related-posts li a {
  font-size: 0.92rem;
  color: var(--text-sub);
}

.related-posts li a:hover {
  color: var(--accent-cyan);
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .comparison-grid, .feature-grid, .pricing-grid, .articles-grid, .reviews-grid-lux, .timeline-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nodes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-main-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.3rem;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: var(--bg-darker);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-menu.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .comparison-grid, .feature-grid, .pricing-grid, .articles-grid, .reviews-grid-lux, .nodes-grid, .timeline-grid, .hero-stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-main-grid {
    grid-template-columns: 1fr;
  }
}