/* ==========================================================================
   赔钱机场 (Peiqian Airport) - 官方极简推广落地页样式表
   主题风格：石板冷灰 (Slate Cool Grey) 极简现代商务与科技感
   ========================================================================== */

:root {
  /* 石板冷灰色谱 (Slate Palette) */
  --slate-950: #090d16;
  --slate-900: #0f172a;
  --slate-850: #141f36;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;

  /* 品牌高光/强调冷色 (Cool Accent) */
  --accent-cyan: #38bdf8;
  --accent-blue: #3b82f6;
  --accent-indigo: #6366f1;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --border-subtle: rgba(148, 163, 184, 0.12);
  --border-focus: rgba(56, 189, 248, 0.4);

  /* 阴影与微光 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.25);

  /* 基础尺寸与过渡 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--slate-950);
  color: var(--slate-100);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: radial-gradient(circle at 50% 0%, #1e293b 0%, #0f172a 45%, #090d16 100%);
  background-attachment: fixed;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* 装饰性科技冷灰背景光斑 */
.ambient-glow {
  position: fixed;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(ellipse at center, rgba(56, 189, 248, 0.08) 0%, rgba(30, 41, 59, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

/* 容器定义 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* 章节通用样式 */
.landing-section {
  padding: 96px 0;
  position: relative;
  scroll-margin-top: 80px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(51, 65, 85, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
}

.section-badge svg {
  width: 16px;
  height: 16px;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--slate-400);
  font-size: 1.05rem;
  line-height: 1.65;
}

/* ==========================================================================
   顶部导航栏 (Navbar)
   ========================================================================== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
}

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

/* 左上角Logo - 点击互动回顶 */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  text-decoration: none;
}

.nav-brand:hover {
  background: rgba(51, 65, 85, 0.4);
  transform: translateY(-1px);
}

.nav-brand:active {
  transform: scale(0.96);
}

.brand-icon-wrapper {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #334155, #1e293b);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.2);
  transition: var(--transition);
}

.nav-brand:hover .brand-icon-wrapper {
  color: #fff;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.brand-tag {
  font-size: 0.72rem;
  padding: 2px 6px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--accent-cyan);
  border-radius: 4px;
  margin-left: 4px;
}

/* 页眉导航目录 (Nav Menu) - 精致毛玻璃药丸背板 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(30, 41, 59, 0.55);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: var(--radius-full);
  padding: 4px 8px;
  backdrop-filter: blur(10px);
}

.nav-menu-link {
  color: var(--slate-300);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition);
  padding: 6px 14px;
  border-radius: var(--radius-full);
}

.nav-menu-link:hover {
  color: #fff;
  background: rgba(56, 189, 248, 0.15);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.2);
}

/* 导航右侧按钮 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  color: var(--slate-300);
  font-size: 0.95rem;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}

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

/* 按钮规范 (全部支持 CTA 且符合 dofollow 要求) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 10px 22px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #38bdf8 0%, #2563eb 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #60a5fa 0%, #1d4ed8 100%);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.45);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(30, 41, 59, 0.8);
  border-color: var(--slate-700);
  color: var(--slate-200);
}

.btn-secondary:hover {
  background: var(--slate-700);
  color: #fff;
  border-color: var(--slate-500);
}

.btn-recommend {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(51, 65, 85, 0.85) 100%);
  border: 1px solid rgba(56, 189, 248, 0.45);
  color: #f8fafc;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), 0 0 14px rgba(56, 189, 248, 0.2);
}

.btn-recommend:hover {
  background: linear-gradient(135deg, rgba(51, 65, 85, 0.95) 0%, rgba(30, 41, 59, 0.95) 100%);
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.35);
  transform: translateY(-2px);
}

.btn-recommend svg {
  color: #fbbf24;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   主视觉区 (Hero Section) - 左右分布与动态元素
   ========================================================================== */
.hero-section {
  padding-top: 140px;
  padding-bottom: 80px;
  position: relative;
}

.hero-grid-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-left-col {
  text-align: left;
}

.hero-title {
  font-size: 3.1rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: #fff;
  margin-bottom: 20px;
}

.brand-title-badge {
  display: inline-block;
  padding: 2px 14px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.18) 0%, rgba(30, 41, 59, 0.85) 100%);
  border: 1px solid rgba(56, 189, 248, 0.45);
  border-radius: var(--radius-sm);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
  margin-right: 8px;
  vertical-align: middle;
}

.hero-title .brand-highlight {
  color: #fff;
  text-shadow: 0 0 25px rgba(56, 189, 248, 0.4);
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, #94a3b8 65%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--slate-300);
  line-height: 1.65;
  margin-bottom: 32px;
}

.hero-cta-group {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

/* 核心指标微看板 */
.hero-metrics-container {
  margin-top: 56px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: rgba(30, 41, 59, 0.45);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  backdrop-filter: blur(12px);
}

/* ==========================================================================
   右侧高质感动态专线监控与测速图卡 (Hero Dynamic Card)
   ========================================================================== */
.hero-right-col {
  display: flex;
  justify-content: center;
}

.hero-dynamic-card {
  width: 100%;
  max-width: 480px;
  background: linear-gradient(165deg, rgba(30, 41, 59, 0.85) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(56, 189, 248, 0.15);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

/* 动态微光扫光效果 */
.hero-dynamic-card::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(56, 189, 248, 0.05) 50%, transparent 60%);
  animation: radarSweep 6s infinite linear;
  pointer-events: none;
}

@keyframes radarSweep {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.card-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.card-status-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--slate-300);
  font-weight: 500;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
  animation: pulseGlow 1.8s infinite;
}

@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

.status-protocol {
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 4px;
  font-family: monospace;
}

/* 动态双向测速仪仪表区域 */
.speed-gauge-box {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  text-align: center;
  margin-bottom: 20px;
  position: relative;
}

.traffic-direction-badge {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--slate-400);
  margin-bottom: 6px;
  font-family: monospace;
}

.direction-down {
  color: var(--accent-cyan);
  font-weight: 600;
}

.direction-up {
  color: #a78bfa;
  font-weight: 600;
}

.speed-dual-display {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0 10px;
  margin-bottom: 6px;
}

.speed-num-wrapper {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.speed-val {
  font-size: 2.6rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  animation: speedFlicker 3s infinite ease-in-out;
}

.speed-val-up {
  font-size: 1.8rem;
  font-weight: 700;
  color: #cbd5e1;
  font-variant-numeric: tabular-nums;
}

.speed-unit.sub {
  color: #a78bfa;
  font-size: 0.85rem;
}

@keyframes speedFlicker {
  0%, 100% { color: #ffffff; }
  50% { color: #38bdf8; }
}

.speed-unit {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.speed-subtag {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 8px;
  font-size: 0.76rem;
  color: var(--slate-400);
  font-family: monospace;
}

.speed-subtag span {
  background: rgba(30, 41, 59, 0.8);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(148, 163, 184, 0.1);
}

/* 动态波形律动图 */
.wave-chart {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 6px;
  height: 48px;
  margin-top: 18px;
  padding-top: 6px;
}

.wave-bar {
  width: 8px;
  background: linear-gradient(180deg, var(--accent-cyan), rgba(37, 99, 235, 0.3));
  border-radius: 4px 4px 0 0;
  animation: waveDance 1.6s infinite ease-in-out alternate;
}

.w-1  { height: 35%; animation-delay: 0.1s; }
.w-2  { height: 60%; animation-delay: 0.25s; }
.w-3  { height: 85%; animation-delay: 0.4s; }
.w-4  { height: 50%; animation-delay: 0.15s; }
.w-5  { height: 95%; animation-delay: 0.5s; }
.w-6  { height: 70%; animation-delay: 0.3s; }
.w-7  { height: 100%; animation-delay: 0.6s; }
.w-8  { height: 80%; animation-delay: 0.45s; }
.w-9  { height: 55%; animation-delay: 0.2s; }
.w-10 { height: 90%; animation-delay: 0.55s; }
.w-11 { height: 65%; animation-delay: 0.35s; }
.w-12 { height: 40%; animation-delay: 0.1s; }

@keyframes waveDance {
  0% { transform: scaleY(0.4); opacity: 0.6; }
  100% { transform: scaleY(1); opacity: 1; filter: drop-shadow(0 0 6px rgba(56, 189, 248, 0.6)); }
}

/* 动态节点列表 */
.dynamic-node-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.node-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.node-status-row:hover {
  background: rgba(30, 41, 59, 0.7);
  border-color: rgba(56, 189, 248, 0.3);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--slate-200);
}

.flag-icon {
  font-size: 1rem;
}

.node-latency {
  font-size: 0.78rem;
  font-family: monospace;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.latency-good {
  color: #4ade80;
  background: rgba(74, 222, 128, 0.12);
}

.dynamic-card-footer {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
  font-size: 0.72rem;
  color: var(--slate-400);
}
  max-width: 900px;
  margin: 0 auto;
  background: rgba(30, 41, 59, 0.45);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.metric-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-subtle);
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.metric-value span {
  color: var(--accent-cyan);
  font-size: 1.1rem;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--slate-400);
  margin-top: 4px;
}

/* ==========================================================================
   产品核心优势 (3个图文卡片)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.85) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: attr(data-step);
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 2.2rem;
  font-weight: 800;
  color: rgba(148, 163, 184, 0.08);
  font-family: monospace;
  transition: var(--transition);
}

.feature-card:hover::before {
  color: rgba(56, 189, 248, 0.25);
  transform: translateY(-2px);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.feature-icon-box {
  width: 60px;
  height: 60px;
  background: rgba(51, 65, 85, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 24px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-box {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--accent-cyan);
  color: #fff;
  transform: scale(1.05);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--slate-400);
  line-height: 1.6;
}

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

.feature-tag-item {
  font-size: 0.75rem;
  padding: 3px 10px;
  background: rgba(51, 65, 85, 0.4);
  color: var(--slate-300);
  border-radius: 6px;
  border: 1px solid rgba(148, 163, 184, 0.1);
}

/* ==========================================================================
   流媒体与AI支持图卡
   ========================================================================== */
.unlock-wrapper {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.75) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.unlock-category-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--slate-200);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}

.unlock-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}

.unlock-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.unlock-card:hover {
  background: rgba(30, 41, 59, 0.85);
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.service-logo {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.05rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
}

.unlock-card:hover .service-logo {
  transform: scale(1.08) rotate(3deg);
}
  gap: 16px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.unlock-card:hover {
  background: rgba(30, 41, 59, 0.9);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

/* 各大平台专属悬停光晕 */
.card-netflix:hover { border-color: rgba(229, 9, 20, 0.5); box-shadow: 0 10px 25px rgba(229, 9, 20, 0.2); }
.card-youtube:hover { border-color: rgba(255, 0, 0, 0.5); box-shadow: 0 10px 25px rgba(255, 0, 0, 0.2); }
.card-disney:hover  { border-color: rgba(56, 140, 248, 0.5); box-shadow: 0 10px 25px rgba(17, 60, 207, 0.25); }
.card-hbo:hover     { border-color: rgba(168, 85, 247, 0.5); box-shadow: 0 10px 25px rgba(168, 85, 247, 0.2); }
.card-chatgpt:hover { border-color: rgba(16, 163, 127, 0.5); box-shadow: 0 10px 25px rgba(16, 163, 127, 0.25); }
.card-claude:hover  { border-color: rgba(245, 158, 11, 0.5); box-shadow: 0 10px 25px rgba(245, 158, 11, 0.25); }
.card-midjourney:hover { border-color: rgba(129, 140, 248, 0.5); box-shadow: 0 10px 25px rgba(129, 140, 248, 0.2); }
.card-gemini:hover  { border-color: rgba(56, 189, 248, 0.5); box-shadow: 0 10px 25px rgba(56, 189, 248, 0.25); }

.service-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
}

.service-logo svg {
  width: 26px;
  height: 26px;
}

.unlock-card:hover .service-logo {
  transform: scale(1.1) rotate(2deg);
}

/* 品牌原色渐变 */
.logo-netflix { background: linear-gradient(135deg, #E50914, #990000); color: #fff; }
.logo-youtube { background: linear-gradient(135deg, #FF0000, #cc0000); color: #fff; }
.logo-disney  { background: linear-gradient(135deg, #113CCF, #081e74); color: #fff; }
.logo-hbo     { background: linear-gradient(135deg, #5822b4, #320f70); color: #fff; }
.logo-chatgpt { background: linear-gradient(135deg, #10a37f, #0d755b); color: #fff; }
.logo-claude  { background: linear-gradient(135deg, #d97706, #92400e); color: #fff; }
.logo-midjourney { background: linear-gradient(135deg, #1e1e2f, #11111b); color: #38bdf8; }
.logo-gemini  { background: linear-gradient(135deg, #2563eb, #1d4ed8); color: #fff; }

.service-info {
  flex-grow: 1;
}

.service-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
}

/* 真实机场计费周期切换控制器 */
.pricing-billing-switch {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 40px;
}

.billing-switch-wrapper {
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 4px;
  display: inline-flex;
}

.billing-tab {
  background: transparent;
  border: none;
  color: var(--slate-400);
  padding: 8px 22px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.billing-tab.active {
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  color: #fff;
  box-shadow: 0 2px 10px rgba(56, 189, 248, 0.35);
}

.billing-tab:not(.active):hover {
  color: #fff;
}

.save-badge {
  font-size: 0.72rem;
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 2px 6px;
  border-radius: 9999px;
  margin-left: 4px;
}

.service-status {
  font-size: 0.78rem;
  color: #4ade80;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: #4ade80;
  border-radius: 50%;
  box-shadow: 0 0 6px #4ade80;
}

/* 协议和客户端兼容徽章条 */
.protocols-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.protocols-label {
  font-size: 0.9rem;
  color: var(--slate-400);
}

.protocols-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.protocol-badge {
  padding: 4px 12px;
  background: rgba(51, 65, 85, 0.4);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: var(--radius-sm);
  color: var(--slate-300);
  font-size: 0.8rem;
  font-family: monospace;
}

/* ==========================================================================
   套餐价格对比表 (Pricing Table)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.75) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(148, 163, 184, 0.3);
  box-shadow: var(--shadow-lg);
}

/* 热门推荐卡片 */
.pricing-card.featured {
  border-color: rgba(56, 189, 248, 0.6);
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.95) 100%);
  box-shadow: 0 0 35px rgba(56, 189, 248, 0.18);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-6px);
  box-shadow: 0 0 45px rgba(56, 189, 248, 0.28);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #38bdf8, #2563eb);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 2px 10px rgba(56, 189, 248, 0.4);
}

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

.plan-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.plan-tagline {
  font-size: 0.88rem;
  color: var(--slate-400);
}

.plan-price-box {
  margin: 20px 0 24px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--slate-100);
}

.plan-price {
  font-size: 3.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.03em;
}

.plan-period {
  font-size: 0.9rem;
  color: var(--slate-400);
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  font-size: 0.92rem;
  color: var(--slate-300);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.plan-features li svg {
  width: 18px;
  height: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.plan-features li.disabled {
  color: var(--slate-600);
}

.plan-features li.disabled svg {
  color: var(--slate-600);
}

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

.testimonial-card {
  background: rgba(30, 41, 59, 0.55);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.testimonial-card:hover {
  background: rgba(30, 41, 59, 0.8);
  border-color: rgba(148, 163, 184, 0.25);
  transform: translateY(-4px);
}

.stars {
  color: #fbbf24;
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.stars svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--slate-300);
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 16px;
}

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--slate-700), var(--slate-800));
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent-cyan);
  font-size: 0.95rem;
}

.user-meta h4 {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
}

.user-meta p {
  font-size: 0.78rem;
  color: var(--slate-400);
}

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-wrapper {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(148, 163, 184, 0.25);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  outline: none;
}

.faq-toggle-icon {
  width: 20px;
  height: 20px;
  color: var(--slate-400);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--slate-300);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-bottom: 20px;
}

/* ==========================================================================
   页尾呼吁转化带 (Bottom CTA Banner)
   ========================================================================== */
.cta-banner {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.95));
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  text-align: center;
  margin-bottom: 60px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cta-banner h3 {
  font-size: 2rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--slate-300);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

/* ==========================================================================
   页脚 (Footer) - 严格遵循只保留4个标题，新页面展示
   ========================================================================== */
.site-footer {
  background: var(--slate-950);
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

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

.footer-link {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

.footer-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: var(--transition);
}

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

.footer-copyright {
  color: var(--slate-500);
  font-size: 0.85rem;
}

/* ==========================================================================
   右侧章节上下滚动箭头控制器 (Section Navigator Widget)
   ========================================================================== */
.section-nav-widget {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 990;
}

.scroll-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.25);
  color: var(--slate-300);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  outline: none;
}

.scroll-btn svg {
  width: 22px;
  height: 22px;
  transition: transform 0.2s ease;
}

.scroll-btn:hover {
  background: rgba(51, 65, 85, 0.95);
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.35);
  transform: scale(1.08);
}

.scroll-btn:active {
  transform: scale(0.92);
  background: var(--accent-blue);
  color: #fff;
}

/* 按钮禁用或端点弱化提示 */
.scroll-btn.disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* 辅助说明气泡 tooltip */
.scroll-btn::before {
  content: attr(data-tooltip);
  position: absolute;
  right: 56px;
  background: rgba(15, 23, 42, 0.9);
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateX(10px);
  transition: var(--transition);
}

.scroll-btn:hover::before {
  opacity: 1;
  transform: translateX(0);
}

/* ==========================================================================
   信息子页面专用样式 (关于我们 / 隐私政策 / 服务条款 / 网站地图)
   ========================================================================== */
.subpage-container {
  max-width: 860px;
  margin: 120px auto 80px;
  padding: 0 24px;
}

.subpage-card {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
}

.subpage-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.subpage-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.subpage-meta {
  font-size: 0.85rem;
  color: var(--slate-400);
}

.subpage-body h2 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--slate-100);
  margin: 32px 0 14px;
}

.subpage-body p {
  color: var(--slate-300);
  font-size: 0.98rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

.subpage-body ul {
  list-style: none;
  margin-bottom: 24px;
}

.subpage-body ul li {
  color: var(--slate-300);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 10px;
  padding-left: 20px;
  position: relative;
}

.subpage-body ul li::before {
  content: "•";
  color: var(--accent-cyan);
  font-size: 1.2rem;
  position: absolute;
  left: 0;
  top: -2px;
}

.subpage-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 36px;
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.subpage-back:hover {
  color: #fff;
  transform: translateX(-4px);
}

/* ==========================================================================
   响应式媒体查询 (Mobile-First / Media Queries)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .unlock-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .pricing-card.featured {
    transform: none;
  }

  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }

  .hero-grid-container {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-left-col {
    text-align: center;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-metrics {
    max-width: 720px;
    margin: 0 auto;
  }

  .nav-menu {
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .landing-section {
    padding: 64px 0;
  }

  .hero-section {
    padding-top: 110px;
    padding-bottom: 60px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .metric-item:nth-child(2)::after {
    display: none;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .unlock-grid {
    grid-template-columns: 1fr;
  }

  .unlock-wrapper {
    padding: 24px 18px;
  }

  .protocols-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-nav-widget {
    right: 14px;
    bottom: 24px;
    top: auto;
    transform: none;
    flex-direction: row;
  }

  .scroll-btn {
    width: 44px;
    height: 44px;
  }

  .scroll-btn::before {
    display: none;
  }

  .footer-nav {
    gap: 20px;
    flex-direction: column;
    text-align: center;
  }

  .subpage-container {
    margin: 90px auto 40px;
  }

  .subpage-card {
    padding: 28px 20px;
  }

  .cta-banner {
    padding: 36px 20px;
  }

  .cta-banner h3 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.85rem;
  }

  .btn-lg {
    width: 100%;
  }

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

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .metric-item::after {
    display: none !important;
  }
}

/* ==========================================================================
   SEO 文章图卡列表 (主页价格板块下方展示)
   ========================================================================== */
.articles-section {
  position: relative;
  background: rgba(15, 23, 42, 0.4);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.article-card {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.35), 0 0 15px rgba(56, 189, 248, 0.15);
}

.article-card-badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-cyan);
  margin-bottom: 14px;
}

.article-card-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.45;
  margin-bottom: 10px;
  transition: var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--slate-400);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--slate-400);
}

.article-read-more {
  color: var(--accent-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   文章详情页排版 (Article Detail Page)
   ========================================================================== */
.article-detail-container {
  max-width: 900px;
  margin: 110px auto 80px;
  padding: 0 24px;
}

.article-post-card {
  background: rgba(30, 41, 59, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-lg);
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--slate-400);
  margin-bottom: 20px;
}

.article-breadcrumbs a {
  color: var(--slate-300);
  text-decoration: none;
  transition: var(--transition);
}

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

.article-detail-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 36px;
}

.article-detail-title {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.article-post-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--slate-400);
  flex-wrap: wrap;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 700;
  color: #fff;
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--accent-cyan);
  border-radius: 2px;
}

.article-body h3 {
  font-size: 1.22rem;
  font-weight: 600;
  color: var(--slate-100);
  margin: 28px 0 12px;
}

.article-body p {
  font-size: 1.02rem;
  color: var(--slate-300);
  line-height: 1.8;
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin: 0 0 24px 20px;
  color: var(--slate-300);
  line-height: 1.8;
}

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

.article-body a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: var(--transition);
}

.article-body a:hover {
  color: #fff;
}

.article-callout {
  background: rgba(15, 23, 42, 0.7);
  border-left: 4px solid var(--accent-cyan);
  padding: 18px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--slate-200);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 文章内部强权重 CTA 推广卡片 */
.article-cta-box {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.article-cta-box h3 {
  font-size: 1.45rem;
  color: #fff;
  margin-bottom: 10px;
}

.article-cta-box p {
  font-size: 0.95rem;
  color: var(--slate-300);
  margin-bottom: 22px;
}

@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }

  .article-post-card {
    padding: 28px 18px;
  }

  .article-detail-title {
    font-size: 1.7rem;
  }
}


/* ==========================================================================
   重构增强版高级页脚样式 (Reconstructed Advanced SEO Footer)
   ========================================================================== */
.site-footer {
  background: #090d16;
  border-top: 1px solid var(--border-subtle);
  padding: 70px 0 35px;
  color: var(--slate-400);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.4), transparent);
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

/* 顶层品牌与实时状态 */
.footer-top-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  flex-wrap: wrap;
}

.footer-brand-info {
  max-width: 620px;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.footer-brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: var(--slate-400);
  line-height: 1.65;
  margin: 0;
}

.footer-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 10px 18px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.status-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: pulse-dot 2s infinite ease-in-out;
}

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

.status-text {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--slate-300);
}

/* 4 列导航网格 */
.footer-columns-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col-title::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 14px;
  background: var(--accent-cyan);
  border-radius: 2px;
}

.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-link {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 0.88rem;
  transition: var(--transition);
  display: inline-block;
}

.footer-col-link:hover {
  color: var(--accent-cyan);
  transform: translateX(3px);
}

.footer-col-link.highlight-link {
  color: #38bdf8;
  font-weight: 600;
}

.footer-col-link.highlight-link:hover {
  color: #fff;
}

.footer-legal-list .legal-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--slate-300);
}

.footer-col-text {
  font-size: 0.88rem;
  color: var(--slate-400);
}

/* SEO 关键词条与安全认证徽章 */
.footer-seo-bar {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(148, 163, 184, 0.08);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-seo-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.82rem;
}

.seo-tag-label {
  color: var(--slate-400);
  font-weight: 600;
}

.seo-tag-item {
  color: var(--slate-300);
  transition: var(--transition);
}

.seo-tag-item:hover {
  color: var(--accent-cyan);
}

.seo-tag-separator {
  color: var(--slate-600);
}

.footer-trust-badges {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--slate-400);
  background: rgba(30, 41, 59, 0.6);
  padding: 5px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.trust-badge svg {
  color: var(--accent-cyan);
}

/* 页脚底层与免责 */
.footer-bottom-bar {
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-disclaimer {
  font-size: 0.78rem;
  color: var(--slate-500);
  line-height: 1.6;
  margin: 0;
}

.footer-copyright-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--slate-500);
  margin: 0;
}

.footer-direct-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}

.footer-direct-link:hover {
  color: #fff;
}

@media (max-width: 900px) {
  .footer-columns-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .footer-columns-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-brand {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-seo-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}


/* ==========================================================================
   页脚居中 PBN 友情链接与权威推荐样式
   ========================================================================== */
.footer-pbn-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 24px;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-md);
  margin: 12px 0 8px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.pbn-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--slate-300);
}

.pbn-link {
  color: #38bdf8;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: var(--transition);
}

.pbn-link:hover {
  color: #fff;
  text-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
  transform: translateY(-1px);
}

.pbn-divider {
  color: var(--slate-600);
  font-size: 0.85rem;
}