/* ==========================================================================
   巨浪云机场网 (julangyun.homes) - 原生极致性能样式表
   零外部依赖 · 纯 CSS 硬件加速 · 秒开级加载体验
   ========================================================================== */

:root {
  --bg-primary: #050b17;
  --bg-secondary: #0a1426;
  --bg-card: rgba(13, 24, 46, 0.72);
  --bg-card-hover: rgba(18, 34, 66, 0.88);
  --border-color: rgba(56, 189, 248, 0.16);
  --border-hover: rgba(56, 189, 248, 0.45);
  
  --primary: #00f2fe;
  --primary-rgb: 0, 242, 254;
  --primary-dark: #0284c7;
  --secondary: #38bdf8;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 25px rgba(0, 242, 254, 0.28);
  --shadow-glow-purple: 0 0 30px rgba(99, 102, 241, 0.28);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
}

/* 动态背景画布与渐变光晕 */
#dynamic-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.aurora-glow {
  position: fixed;
  top: -15%;
  left: 20%;
  width: 60vw;
  height: 50vh;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 75%);
  filter: blur(80px);
  z-index: 0;
  pointer-events: none;
  animation: floatGlow 14s ease-in-out infinite alternate;
}

.aurora-glow-2 {
  position: fixed;
  bottom: -10%;
  right: 15%;
  width: 55vw;
  height: 45vh;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.14) 0%, rgba(56, 189, 248, 0.06) 50%, transparent 75%);
  filter: blur(90px);
  z-index: 0;
  pointer-events: none;
  animation: floatGlow2 16s ease-in-out infinite alternate;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 40px) scale(1.08); }
  100% { transform: translate(40px, -20px) scale(0.95); }
}

@keyframes floatGlow2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.1); }
  100% { transform: translate(-40px, 30px) scale(0.9); }
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

/* 顶部导航栏 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 11, 23, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: var(--transition);
}

.brand-logo img {
  height: 44px;
  width: auto;
  display: block;
}

.brand-logo:hover {
  filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.4));
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.menu-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
  display: block;
}

/* 按钮通用样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  outline: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #0284c7 100%);
  color: #030712;
  box-shadow: 0 4px 16px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 242, 254, 0.5);
  background: linear-gradient(135deg, #38bdf8 0%, #0369a1 100%);
}

.btn-secondary {
  background: rgba(14, 165, 233, 0.1);
  color: var(--text-main);
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.btn-secondary:hover {
  background: rgba(14, 165, 233, 0.2);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-pulse {
  position: relative;
  overflow: hidden;
}

.btn-pulse::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transition: 0.5s;
}

.btn-pulse:hover::before {
  left: 100%;
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

/* 徽章 Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(14, 165, 233, 0.12);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background-color: var(--primary);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--primary);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* 区域共用标题 */
.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 50px auto;
}

.section-tag {
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, #38bdf8 50%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   Hero 头部首屏区域
   ========================================================================== */
.hero-section {
  padding: 100px 0 80px 0;
  position: relative;
  text-align: center;
}

.hero-badge-wrap {
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px auto;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: var(--text-dim);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.hero-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-guarantee svg {
  width: 16px;
  height: 16px;
  color: var(--success);
}

/* Hero 数据与测速演示卡片 */
.hero-dashboard {
  margin-top: 55px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow);
  position: relative;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.dashboard-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.status-indicator {
  width: 10px;
  height: 10px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--success);
}

.dashboard-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: left;
}

.metric-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.metric-val {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: var(--font-mono);
}

.metric-val.highlight {
  color: var(--primary);
}

/* ==========================================================================
   价格套餐模块 (严格执行：所有价格要同排展示)
   ========================================================================== */
.pricing-section {
  background: linear-gradient(180deg, rgba(10, 20, 38, 0.6) 0%, rgba(5, 11, 23, 0.95) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

/* 桌面端同排展示 4 列，保证等高对齐 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
  backdrop-filter: blur(10px);
}

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

.price-card.featured {
  background: rgba(14, 165, 233, 0.12);
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-glow);
  transform: scale(1.02);
}

.price-card.featured:hover {
  transform: scale(1.02) translateY(-6px);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #00f2fe, #0284c7);
  color: #04101e;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 3px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(0, 242, 254, 0.4);
  white-space: nowrap;
}

.plan-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 20px;
  margin-bottom: 20px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plan-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-price-wrap {
  margin: 16px 0 10px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.price-num {
  font-size: 2.5rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--text-main);
  line-height: 1;
}

.price-cycle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-annual-note {
  font-size: 0.8rem;
  color: var(--secondary);
  background: rgba(56, 189, 248, 0.1);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 6px;
}

.plan-features {
  list-style: none;
  margin-bottom: 26px;
  flex-grow: 1;
}

.plan-features li {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.45;
}

.plan-features li strong {
  color: var(--text-main);
}

.plan-features li svg {
  width: 17px;
  height: 17px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   核心优势卡片 Feature Cards
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.feature-icon-wrap {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}

.feature-icon-wrap svg {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   全球节点与测速展示
   ========================================================================== */
.nodes-table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.nodes-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 16px 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nodes-table td {
  padding: 16px 20px;
  font-size: 0.92rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.nodes-table tr:hover td {
  background: rgba(14, 165, 233, 0.06);
}

.node-region {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.node-flag {
  font-size: 1.25rem;
}

.latency-good {
  color: var(--success);
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ==========================================================================
   深度推荐文章专区 (Articles Showcase)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.article-card-header {
  margin-bottom: 14px;
}

.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(14, 165, 233, 0.15);
  color: var(--primary);
  margin-bottom: 10px;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-main);
  transition: var(--transition);
}

.article-card:hover .article-card-title {
  color: var(--primary);
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.article-link-text {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   客户端支持与外链推荐
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  transition: var(--transition);
}

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

.client-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px auto;
  color: var(--primary);
}

.client-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.client-os {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.client-btn {
  font-size: 0.82rem;
  padding: 6px 14px;
}

/* ==========================================================================
   真实用户评价 Testimonials
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.rating-stars {
  color: #fbbf24;
  margin-bottom: 14px;
  font-size: 0.95rem;
  letter-spacing: 2px;
}

.testimonial-quote {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #04101e;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
}

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

.author-role {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   常见问题 FAQ (手风琴纯原生)
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

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

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

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

/* ==========================================================================
   底部 CTA 呼吁与 Footer
   ========================================================================== */
.cta-banner {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.2) 0%, rgba(99, 102, 241, 0.2) 100%);
  border: 1px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 50px 30px;
  text-align: center;
  margin-bottom: 60px;
  box-shadow: var(--shadow-glow);
}

.cta-banner h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-banner p {
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 28px auto;
  font-size: 1.05rem;
}

.footer {
  background: #030712;
  border-top: 1px solid var(--border-color);
  padding: 65px 0 30px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.footer-brand img {
  height: 42px;
  width: auto;
  margin-bottom: 16px;
}

.footer-desc {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 16px;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.88rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  color: var(--text-dim);
  text-decoration: none;
}

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

/* ==========================================================================
   响应式断点适配
   ========================================================================== */
@media (max-width: 1100px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid,
  .articles-grid,
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(5, 11, 23, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
  }
  .nav-links.active {
    transform: translateY(0);
  }
  .menu-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .dashboard-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .price-card.featured {
    transform: none;
  }
  .price-card.featured:hover {
    transform: translateY(-4px);
  }
  .features-grid,
  .articles-grid,
  .testimonials-grid,
  .clients-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}