/* ===================================================================
   影子 (Yingzi) - 极简高性能纯原生 CSS 样式表
   零依赖 / 秒开级加载 / 响应式全平台适配
   =================================================================== */

:root {
  --bg-primary: #080b11;
  --bg-secondary: #0f1420;
  --bg-card: rgba(18, 24, 38, 0.7);
  --bg-card-hover: rgba(28, 36, 56, 0.85);
  --bg-glass: rgba(12, 17, 28, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.4);
  --border-accent: rgba(14, 165, 233, 0.3);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.35);
  --cyan: #06b6d4;
  --cyan-glow: rgba(6, 182, 212, 0.3);
  --emerald: #10b981;
  --amber: #f59e0b;
  --purple: #a855f7;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "Fira Code", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.18), transparent 70%),
    radial-gradient(circle at 100% 60%, rgba(6, 182, 212, 0.08), transparent 40%),
    radial-gradient(circle at 0% 80%, rgba(168, 85, 247, 0.08), transparent 40%);
  background-attachment: fixed;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 按钮通用规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #4338ca 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.55);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-cyan {
  background: linear-gradient(135deg, #06b6d4 0%, #0284c7 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--cyan-glow);
}

.btn-cyan:hover {
  background: linear-gradient(135deg, #0891b2 0%, #0369a1 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(6, 182, 212, 0.5);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
  letter-spacing: 0.5px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ===================================================================
   导航栏 (Navbar)
   =================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  min-width: 38px;
  max-width: 38px;
  min-height: 38px;
  max-height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
  overflow: hidden;
  flex-shrink: 0;
}

.logo-badge img {
  width: 32px !important;
  height: 32px !important;
  max-width: 32px !important;
  max-height: 32px !important;
  object-fit: contain;
  border-radius: 6px;
  display: block;
}

.logo-text {
  background: linear-gradient(135deg, #ffffff 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-domain {
  font-size: 11px;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.3);
  font-family: var(--font-mono);
  font-weight: 500;
}

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

.nav-link {
  font-size: 14.5px;
  color: var(--text-muted);
  font-weight: 500;
  padding: 8px 4px;
  position: relative;
}

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

.nav-link.highlight {
  color: #38bdf8;
  font-weight: 600;
  background: rgba(56, 189, 248, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.nav-link.highlight:hover {
  background: rgba(56, 189, 248, 0.2);
  color: #7dd3fc;
}

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

/* 原生 CSS 移动端汉堡菜单 (零 JS) */
.menu-toggle {
  display: none;
}

.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 28px;
  cursor: pointer;
  padding: 2px;
}

.menu-btn span {
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===================================================================
   首屏横幅区 (Hero Section)
   =================================================================== */
.hero-section {
  padding-top: 150px;
  padding-bottom: 90px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fbbf24;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 28px;
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
  animation: pulse-badge 2.5s infinite;
}

@keyframes pulse-badge {
  0%, 100% { transform: scale(1); box-shadow: 0 0 15px rgba(245, 158, 11, 0.2); }
  50% { transform: scale(1.03); box-shadow: 0 0 25px rgba(245, 158, 11, 0.35); }
}

.hero-title {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1.5px;
  max-width: 960px;
  margin: 0 auto 24px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, #818cf8 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 19px;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

/* 信任指标栏 */
.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 30px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.trust-value {
  font-size: 24px;
  font-weight: 800;
  color: #ffffff;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, #ffffff 40%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.trust-label {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ===================================================================
   板块基础组件 (Section Header)
   =================================================================== */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 55px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #818cf8;
  margin-bottom: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================================
   核心优势图卡区 (Dynamic Cards Section)
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, #6366f1, transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}

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

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  background: rgba(99, 102, 241, 0.12);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.feature-card:nth-child(2) .feature-icon-wrapper {
  background: rgba(6, 182, 212, 0.12);
  color: #22d3ee;
  border-color: rgba(6, 182, 212, 0.25);
}

.feature-card:nth-child(3) .feature-icon-wrapper {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.25);
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.feature-text {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 流媒体与 AI 支持图卡 */
.streaming-card {
  background: linear-gradient(135deg, rgba(20, 26, 42, 0.9) 0%, rgba(13, 17, 28, 0.9) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.streaming-content h3 {
  font-size: 24px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.streaming-content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.streaming-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.streaming-pill {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  font-size: 13px;
  font-weight: 600;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.streaming-pill.glow-cyan {
  border-color: rgba(6, 182, 212, 0.4);
  background: rgba(6, 182, 212, 0.1);
  color: #38bdf8;
}

.streaming-pill.glow-purple {
  border-color: rgba(168, 85, 247, 0.4);
  background: rgba(168, 85, 247, 0.1);
  color: #c084fc;
}

.streaming-grid-icons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.stream-logo-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.stream-logo-box:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-highlight);
  transform: scale(1.05);
}

.stream-logo-box svg {
  width: 28px;
  height: 28px;
}

.stream-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}

/* ===================================================================
   定价卡片区 (Pricing Section)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.pricing-card:hover {
  border-color: rgba(99, 102, 241, 0.5);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* VIP2 推荐卡片突出设计 */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(30, 39, 65, 0.95) 0%, rgba(16, 22, 36, 0.95) 100%);
  border: 2px solid #6366f1;
  box-shadow: 0 10px 40px rgba(99, 102, 241, 0.25);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-8px);
  box-shadow: 0 20px 50px rgba(99, 102, 241, 0.4);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  color: #ffffff;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
  text-transform: uppercase;
}

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

.plan-name {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  min-height: 40px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 18px 0 6px;
}

.price-currency {
  font-size: 24px;
  font-weight: 700;
  color: #818cf8;
}

.price-amount {
  font-size: 46px;
  font-weight: 900;
  color: #ffffff;
  font-family: var(--font-mono);
  line-height: 1;
}

.price-period {
  font-size: 14px;
  color: var(--text-dim);
}

.plan-traffic-highlight {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-full);
  color: #a5b4fc;
  font-size: 13px;
  font-weight: 700;
  margin-top: 6px;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #cbd5e1;
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  color: #10b981;
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-btn {
  width: 100%;
}

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

.why-row.reverse {
  direction: rtl;
}

.why-row.reverse > * {
  direction: ltr;
}

.why-content h3 {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.why-content p {
  font-size: 15.5px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 22px;
}

.why-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.why-checklist li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: #e2e8f0;
}

.why-checklist svg {
  color: #06b6d4;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* 视觉化动态数据面板 */
.stats-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.stats-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: #10b981;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: live-blink 1.5s infinite;
}

@keyframes live-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.stats-grid-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.stat-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.stat-num {
  font-size: 26px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #ffffff;
}

.stat-sub {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

.meter-bar-wrap {
  margin-top: 10px;
}

.meter-title {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.meter-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  background: linear-gradient(90deg, #6366f1, #06b6d4);
  border-radius: var(--radius-full);
}

/* 极客终端代码块 */
.terminal-card {
  background: #090d16;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
  font-family: var(--font-mono);
}

.terminal-header {
  background: #0f1523;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

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

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #10b981; }

.terminal-title {
  font-size: 12px;
  color: var(--text-dim);
}

.terminal-body {
  padding: 20px;
  font-size: 13px;
  line-height: 1.7;
  color: #e2e8f0;
}

.term-cmd { color: #38bdf8; }
.term-kw { color: #f43f5e; font-weight: bold; }
.term-str { color: #34d399; }
.term-comment { color: #64748b; font-style: italic; }
.term-ok { color: #10b981; font-weight: bold; }

/* ===================================================================
   底部二次转化区 (CTA Section)
   =================================================================== */
.cta-banner-section {
  padding: 60px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(37, 43, 78, 0.9) 0%, rgba(18, 24, 46, 0.95) 100%);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner-title {
  font-size: 38px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.cta-banner-desc {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 32px;
}

/* ===================================================================
   用户评价跑马灯区 (Testimonials Marquee)
   =================================================================== */
.marquee-wrapper {
  overflow: hidden;
  user-select: none;
  padding: 20px 0;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

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

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

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

.testimonial-card {
  width: 340px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  flex-shrink: 0;
  transition: border-color var(--transition-fast);
}

.testimonial-card:hover {
  border-color: var(--border-highlight);
}

.test-stars {
  color: #fbbf24;
  margin-bottom: 12px;
  display: flex;
  gap: 2px;
}

.test-quote {
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.65;
  margin-bottom: 16px;
  min-height: 68px;
}

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

.test-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: #ffffff;
}

.test-info {
  display: flex;
  flex-direction: column;
}

.test-name {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

.test-role {
  font-size: 12px;
  color: var(--text-dim);
}

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

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--border-highlight);
  background: rgba(22, 29, 46, 0.85);
}

.faq-summary {
  list-style: none;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-icon {
  width: 20px;
  height: 20px;
  color: #818cf8;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px 24px;
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===================================================================
   页脚 (Footer)
   =================================================================== */
.footer {
  border-top: 1px solid var(--border-subtle);
  background: #06080d;
  padding: 50px 0 40px;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-dim);
}

/* ===================================================================
   资讯文章与独立页面样式 (Articles & Pages)
   =================================================================== */
.article-page-header {
  padding-top: 130px;
  padding-bottom: 40px;
  text-align: center;
}

.article-page-title {
  font-size: 38px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
}

.article-page-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto;
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: 50px;
  max-width: 900px;
  margin: 40px auto 80px;
}

.article-card-full {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all var(--transition-normal);
}

.article-card-full:hover {
  border-color: var(--border-highlight);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.article-badge {
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.article-card-full h2 {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 18px;
  line-height: 1.35;
}

.article-card-full h3 {
  font-size: 19px;
  font-weight: 700;
  color: #e2e8f0;
  margin: 22px 0 10px;
}

.article-card-full p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.article-card-full ul, .article-card-full ol {
  margin-left: 20px;
  margin-bottom: 18px;
  color: var(--text-muted);
}

.article-card-full li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-card-full a.dofollow-link {
  color: #38bdf8;
  text-decoration: underline;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.article-card-full a.dofollow-link:hover {
  color: #7dd3fc;
}

.article-card-full a.internal-link {
  color: #818cf8;
  text-decoration: underline;
  font-weight: 600;
}

.article-card-full a.internal-link:hover {
  color: #a5b4fc;
}

/* 独立信息页样式 (About, Terms, Privacy, Sitemap) */
.info-page-wrapper {
  max-width: 860px;
  margin: 130px auto 80px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.info-page-wrapper h1 {
  font-size: 32px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
}

.info-page-wrapper h2 {
  font-size: 22px;
  font-weight: 700;
  color: #e2e8f0;
  margin: 28px 0 14px;
}

.info-page-wrapper p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.info-page-wrapper ul {
  margin-left: 20px;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.info-page-wrapper li {
  margin-bottom: 8px;
  line-height: 1.7;
}

/* ===================================================================
   响应式媒体查询 (@media) - 确保手机端单栏与极佳手指点击体验
   =================================================================== */
@media screen and (max-width: 1024px) {
  .hero-title {
    font-size: 42px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
    gap: 36px;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .streaming-card {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 768px) {
  .menu-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: 0;
    overflow: hidden;
    background: rgba(8, 11, 17, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 0 24px;
    gap: 16px;
    transition: height 0.35s ease, padding 0.35s ease;
    border-bottom: 1px solid transparent;
  }

  .menu-toggle:checked ~ .nav-menu {
    height: 380px;
    padding: 24px;
    border-bottom-color: var(--border-subtle);
  }

  .menu-toggle:checked ~ .menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }
  .menu-toggle:checked ~ .menu-btn span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle:checked ~ .menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }

  .nav-actions {
    display: none;
  }

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

  .hero-title {
    font-size: 32px;
    line-height: 1.25;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 18px;
  }

  .why-row, .why-row.reverse {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .why-row.reverse {
    direction: ltr;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .cta-banner-title {
    font-size: 28px;
  }

  .btn {
    width: 100%;
    min-height: 48px;
  }

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

  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }

  .info-page-wrapper {
    padding: 24px;
    margin-top: 100px;
  }

  .article-card-full {
    padding: 24px;
  }
}

@media screen and (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }
  .hero-trust-bar {
    grid-template-columns: 1fr;
  }
  .streaming-grid-icons {
    grid-template-columns: repeat(2, 1fr);
  }
}