/* ==========================================================================
   Ssrdog 极速网络加速服务 - 原生极简高效样式表 (style.css)
   特性：零外部依赖、秒开级性能、全设备自适应、暗黑科技美学
   ========================================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d121d;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(26, 35, 54, 0.9);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(59, 130, 246, 0.4);
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-glow: rgba(37, 99, 235, 0.35);
  --accent: #8b5cf6;
  --accent-pink: #ec4899;
  --success: #10b981;
  --warning: #f59e0b;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --container-max: 1200px;
  --header-height: 72px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.15) 0%, transparent 60%),
    radial-gradient(circle at 100% 40%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   按钮组件与视觉效果
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: 9999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  box-shadow: 0 6px 24px rgba(37, 99, 235, 0.55);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(124, 58, 237, 0.4);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.6);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-discount {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.35);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}

.badge-recom {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: #ffffff;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
}

.section-tag {
  color: var(--primary-light);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  display: inline-block;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ==========================================================================
   导航栏 (Navbar)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: var(--transition);
  background: rgba(7, 9, 14, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.navbar {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #2563eb, #8b5cf6);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-name {
  background: linear-gradient(135deg, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

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

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

.nav-link-special {
  color: #60a5fa !important;
  font-weight: 600;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.hamburger svg {
  display: block;
}

/* ==========================================================================
   首屏横幅区 (Hero Section)
   ========================================================================== */
.hero-section {
  padding-top: calc(var(--header-height) + 70px);
  padding-bottom: 90px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

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

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  color: #ffffff;
}

.text-gradient {
  background: linear-gradient(135deg, #60a5fa 10%, #a78bfa 70%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-trust-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  font-size: 0.875rem;
  color: var(--text-dim);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.trust-icon {
  color: var(--success);
}

/* ==========================================================================
   通用区块与卡片
   ========================================================================== */
.section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  margin-bottom: 50px;
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
}

/* ==========================================================================
   核心优势图卡区 (Dynamic Cards Section)
   ========================================================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 30px;
}

.advantage-card {
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
}

.adv-icon-box {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  margin-bottom: 22px;
}

.adv-icon-box.purple {
  background: rgba(139, 92, 246, 0.12);
  border-color: rgba(139, 92, 246, 0.25);
  color: var(--accent);
}

.adv-icon-box.green {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.25);
  color: var(--success);
}

.advantage-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.advantage-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 流媒体与 AI 支持大图卡 */
.media-ai-card {
  padding: 36px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.media-ai-info {
  flex: 1;
}

.media-ai-info h3 {
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.media-ai-info p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 600px;
}

.media-tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 480px;
  justify-content: flex-end;
}

.media-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #e2e8f0;
  transition: var(--transition);
}

.media-pill:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: var(--border-glow);
  transform: translateY(-2px);
}

.pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

/* ==========================================================================
   定价卡片区 (Pricing Section)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  border-color: rgba(59, 130, 246, 0.5);
  background: linear-gradient(180deg, rgba(30, 41, 69, 0.85) 0%, rgba(18, 24, 38, 0.95) 100%);
  box-shadow: 0 12px 36px rgba(37, 99, 235, 0.2);
  transform: translateY(-6px);
}

.pricing-card.featured:hover {
  transform: translateY(-10px);
  box-shadow: 0 18px 46px rgba(37, 99, 235, 0.35);
}

.featured-ribbon {
  position: absolute;
  top: 18px;
  right: 22px;
}

.plan-header {
  margin-bottom: 24px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.plan-sub {
  color: var(--text-dim);
  font-size: 0.875rem;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 20px;
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-light);
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #ffffff;
}

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

.plan-traffic-highlight {
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.9rem;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.traffic-num {
  font-weight: 700;
  color: var(--primary-light);
}

.plan-features {
  margin-bottom: 32px;
  flex: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.feature-check {
  color: var(--success);
  flex-shrink: 0;
  margin-top: 3px;
}

.pricing-card .btn {
  width: 100%;
}

/* ==========================================================================
   深度特性解析区 (Why Choose Section)
   ========================================================================== */
.feature-split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 70px;
}

.feature-split-row:last-child {
  margin-bottom: 0;
}

.feature-text-block h3 {
  font-size: 1.85rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.feature-text-block p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-bullets {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-bullet {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: #cbd5e1;
}

.bullet-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-light);
  box-shadow: 0 0 8px var(--primary-glow);
}

/* 视觉化动态数据面板 */
.metric-dashboard {
  padding: 30px;
  background: rgba(13, 18, 29, 0.85);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.metric-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;
}

.metric-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  padding: 4px 10px;
  border-radius: 9999px;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
  100% { opacity: 1; transform: scale(1); }
}

.metric-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 22px;
}

.stat-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 14px 18px;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.stat-value {
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
}

.stat-value.green {
  color: var(--success);
}

.stat-value.blue {
  color: var(--primary-light);
}

.speed-meter-bar {
  background: rgba(255, 255, 255, 0.06);
  height: 8px;
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
  margin-top: 10px;
}

.speed-meter-fill {
  background: linear-gradient(90deg, #2563eb, #38bdf8, #10b981);
  height: 100%;
  width: 98.6%;
  border-radius: 9999px;
}

/* 终端代码块样式 (Strict_No_Logs_Policy.sh) */
.terminal-card {
  background: #090d16;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  font-family: var(--font-mono);
}

.terminal-header {
  background: #111726;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #eab308; }
.dot-green { background: #22c55e; }

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

.terminal-body {
  padding: 20px;
  font-size: 0.85rem;
  line-height: 1.7;
  color: #cbd5e1;
  overflow-x: auto;
}

.t-comment { color: #64748b; }
.t-cmd { color: #38bdf8; font-weight: 600; }
.t-success { color: #4ade80; }
.t-var { color: #f472b6; }
.t-keyword { color: #fbbf24; }

/* ==========================================================================
   用户评价跑马灯区 (Testimonials Marquee Section)
   ========================================================================== */
.testimonials-section {
  padding: 80px 0 60px 0;
  overflow: hidden;
}

.marquee-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  padding: 20px 0;
}

.marquee-container::before,
.marquee-container::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.marquee-container::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-primary), transparent);
}

.marquee-container::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-primary), transparent);
}

.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: marquee 35s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.testimonial-card {
  width: 340px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  flex-shrink: 0;
  backdrop-filter: blur(10px);
}

.rating-stars {
  color: #fbbf24;
  font-size: 0.95rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 0.925rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 18px;
}

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

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
  font-size: 0.9rem;
}

.user-meta h4 {
  font-size: 0.92rem;
  font-weight: 600;
  color: #ffffff;
}

.user-meta span {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ==========================================================================
   常见问题解答区 (FAQ Section)
   ========================================================================== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item[open] {
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(18, 24, 38, 0.9);
}

.faq-summary {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--primary-light);
  transition: transform 0.25s ease;
}

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

.faq-content {
  padding: 0 24px 20px 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ==========================================================================
   底部转化区 (CTA Section)
   ========================================================================== */
.cta-banner-wrap {
  padding: 40px 0 80px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(30, 41, 69, 0.9) 0%, rgba(13, 18, 29, 0.95) 100%);
  border: 1px solid rgba(59, 130, 246, 0.35);
  border-radius: 24px;
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 36px auto;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.site-footer {
  background: #05070a;
  border-top: 1px solid var(--border-color);
  padding: 40px 0 30px 0;
  font-size: 0.9rem;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
  transition: var(--transition);
  font-weight: 500;
}

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

.footer-copy {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.825rem;
}

/* ==========================================================================
   响应式适配 (@media 针对移动端与平板)
   ========================================================================== */
@media (max-width: 992px) {
  .advantages-grid,
  .pricing-grid {
    grid-template-columns: repeat(1, 1fr);
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .media-ai-card {
    flex-direction: column;
    text-align: center;
  }
  
  .media-tags-grid {
    justify-content: center;
  }

  .feature-split-row {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .feature-split-row.reverse-mob {
    display: flex;
    flex-direction: column-reverse;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(10, 13, 20, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 24px 20px;
    gap: 18px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .hamburger {
    display: block;
  }

  .nav-actions .btn-outline {
    display: none;
  }

  .hero-section {
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 60px;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta .btn {
    width: 100%;
    max-width: 320px;
  }

  .cta-banner {
    padding: 40px 20px;
  }

  .cta-banner .btn {
    width: 100%;
    max-width: 320px;
  }

  .footer-nav {
    gap: 20px;
  }
}

/* ==========================================================================
   资讯中心与 SEO 深度文章页面排版 (insights-2026.html)
   ========================================================================== */
.insights-hero {
  padding-top: calc(var(--header-height) + 50px);
  padding-bottom: 50px;
  text-align: center;
}

.articles-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 80px;
}

.article-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-link {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.4;
  padding: 6px 10px;
  border-radius: 8px;
  transition: var(--transition);
}

.sidebar-link:hover {
  color: #ffffff;
  background: rgba(59, 130, 246, 0.12);
}

.articles-container {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.seo-article-card {
  padding: 38px 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.article-badge-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.article-date {
  font-size: 0.825rem;
  color: var(--text-dim);
}

.article-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.35;
  margin-bottom: 20px;
}

.article-body {
  font-size: 1rem;
  color: #cbd5e1;
  line-height: 1.8;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin: 28px 0 12px 0;
  padding-left: 12px;
  border-left: 3px solid var(--primary-light);
}

.article-body h4 {
  font-size: 1.08rem;
  font-weight: 600;
  color: #e2e8f0;
  margin: 20px 0 10px 0;
}

.article-body p {
  margin-bottom: 16px;
}

.article-body ul, .article-body ol {
  margin-bottom: 18px;
  padding-left: 24px;
}

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

.article-body strong {
  color: #ffffff;
}

.seo-dofollow-link {
  color: #60a5fa;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: var(--transition);
}

.seo-dofollow-link:hover {
  color: #93c5fd;
  text-shadow: 0 0 10px rgba(96, 165, 250, 0.5);
}

.article-meta-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 22px 0;
  font-size: 0.925rem;
  color: var(--text-muted);
}

.article-meta-box strong {
  color: var(--primary-light);
}

.article-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.article-tag {
  font-size: 0.78rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-dim);
  padding: 4px 10px;
  border-radius: 6px;
}

@media (max-width: 992px) {
  .articles-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .seo-article-card {
    padding: 26px 20px;
  }
  .article-title {
    font-size: 1.35rem;
  }
}