/* ===================================================================
   杏花云 (XingHua Cloud) - 现代科技动力美学样式表
   Design Language: Spring Wind Kinetic Velocity & Polished Glass
   Color Palette:
     - Deep obsidian purple (#0F0A1A)
     - Vibrant apricot coral (#FF6F59)
     - Windblown pastel rose (#FCA5A5)
     - Pure technical white (#FFFFFF)
   Strict Network & Performance Iconography (Zero AI sparkles/stars)
   =================================================================== */

:root {
  /* 专属调色盘 - 杏花云春风动力主题 */
  --obsidian-dark: #0f0a1a;
  --obsidian-card: #171126;
  --obsidian-surface: #1f1733;
  --apricot-coral: #ff6f59;
  --apricot-glow: rgba(255, 111, 89, 0.4);
  --pastel-rose: #fca5a5;
  --wind-cyan: #38bdf8;
  --tech-emerald: #10b981;
  --signal-amber: #f59e0b;
  --fiber-violet: #8b5cf6;

  /* 渐变系列 */
  --spring-wind-gradient: linear-gradient(135deg, #ff6f59 0%, #fca5a5 50%, #8b5cf6 100%);
  --wind-velocity-bar: linear-gradient(90deg, #ff6f59, #f43f5e, #8b5cf6, #38bdf8);
  --glass-surface: rgba(255, 255, 255, 0.75);

  /* 默认白天模式 (Light Mode) 变量 */
  --bg-page: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-solid: #ffffff;
  --bg-alt: #f1f5f9;
  --bg-subtle: #e2e8f0;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: rgba(226, 232, 240, 0.9);
  --border-glow: rgba(255, 111, 89, 0.35);

  --text-main: #0f0a1a;
  --text-muted: #475569;
  --text-light: #64748b;
  --text-inverse: #ffffff;

  --shadow-sm: 0 2px 8px rgba(15, 10, 26, 0.05);
  --shadow-md: 0 8px 24px rgba(15, 10, 26, 0.08);
  --shadow-lg: 0 16px 36px rgba(15, 10, 26, 0.12);
  --shadow-coral-glow: 0 8px 25px rgba(255, 111, 89, 0.35);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 暗夜模式 (Deep Obsidian Purple Dark Mode) */
[data-theme="dark"] {
  --bg-page: #0f0a1a;
  --bg-card: rgba(23, 17, 38, 0.85);
  --bg-card-solid: #171126;
  --bg-alt: #1a132b;
  --bg-subtle: #251b3d;
  --bg-glass: rgba(15, 10, 26, 0.88);
  --border-color: rgba(255, 255, 255, 0.09);
  --border-glow: rgba(255, 111, 89, 0.55);

  --text-main: #ffffff;
  --text-muted: #cbd5e1;
  --text-light: #94a3b8;
  --text-inverse: #0f0a1a;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 18px 45px rgba(0, 0, 0, 0.75);
  --shadow-coral-glow: 0 0 30px rgba(255, 111, 89, 0.45);
}

/* ===================================================================
   基础排版与重置
   =================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 春风流线光标尾迹 Canvas (优雅低功耗) */
#windCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
}

/* ===================================================================
   顶部导航栏 (Navbar)
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 850;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.logo-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--spring-wind-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 14px var(--apricot-glow);
  position: relative;
  overflow: hidden;
}

.logo-badge svg {
  width: 22px;
  height: 22px;
}

.logo-text {
  background: var(--spring-wind-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 550;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--spring-wind-gradient);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

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

/* 导航专属高亮标签：推荐资讯 */
.nav-link-news {
  position: relative;
}

.news-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--apricot-coral);
  box-shadow: 0 0 6px var(--apricot-coral);
  position: absolute;
  top: 6px;
  right: -8px;
}

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

/* 精致专业化透明毛玻璃昼夜模式切换按钮 */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  border-color: var(--apricot-coral);
  box-shadow: 0 0 14px var(--apricot-glow);
  transform: translateY(-1px);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

.theme-toggle-btn .sun-icon {
  display: block;
}

.theme-toggle-btn .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .moon-icon {
  display: block;
}

/* 导航 CTA 按钮 - 触感微交互 */
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius-full);
  background: var(--spring-wind-gradient);
  color: #ffffff !important;
  font-size: 0.9rem;
  font-weight: 650;
  box-shadow: 0 4px 14px var(--apricot-glow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 111, 89, 0.5);
}

.btn-nav-cta:active {
  transform: translateY(1px) scale(0.98);
}

/* 移动端菜单按钮 */
.menu-toggle-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  align-items: center;
  justify-content: center;
  color: var(--text-main);
}

.menu-toggle-btn svg {
  width: 22px;
  height: 22px;
}

/* ===================================================================
   主视觉区 (Hero Section - Kinetic Motion Headline & Airflow Vectors)
   =================================================================== */
.hero-section {
  position: relative;
  padding: 85px 0 70px;
  overflow: hidden;
  text-align: center;
}

/* 动态背景矢量风流光斑 */
.hero-airflow-bg {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(circle at 50% 40%, rgba(255, 111, 89, 0.16) 0%, rgba(139, 92, 246, 0.1) 40%, transparent 70%);
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}

/* 漂移矢量气流线 */
.airflow-vector-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  z-index: 0;
  background-image: 
    radial-gradient(1.5px 1.5px at 20px 30px, var(--apricot-coral), rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 80px 120px, var(--pastel-rose), rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 150px 70px, var(--fiber-violet), rgba(0,0,0,0));
  background-size: 200px 200px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--apricot-coral);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.server-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tech-emerald);
  box-shadow: 0 0 8px var(--tech-emerald);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

/* 必须包含品牌名的大标题 */
.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1.4px;
  margin-bottom: 22px;
  color: var(--text-main);
}

.brand-title-highlight {
  background: var(--spring-wind-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  text-shadow: 0 10px 30px var(--apricot-glow);
}

.hero-desc {
  font-size: 1.22rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 38px;
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 46px;
}

/* 按钮 - 触感弹性反馈 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  border-radius: var(--radius-full);
  background: var(--spring-wind-gradient);
  color: #ffffff !important;
  font-size: 1.05rem;
  font-weight: 700;
  box-shadow: 0 8px 25px var(--apricot-glow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px rgba(255, 111, 89, 0.5);
}

.btn-primary:active {
  transform: translateY(1px) scale(0.97);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 650;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-alt);
  border-color: var(--apricot-coral);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(1px) scale(0.97);
}

/* 性能参数实时滚动栏 */
.hero-telemetry-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 960px;
  margin: 0 auto;
  padding-top: 30px;
  border-top: 1px dashed var(--border-color);
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.telemetry-num {
  font-size: 1.65rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--text-main);
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.telemetry-unit {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--apricot-coral);
}

.telemetry-label {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 550;
  display: flex;
  align-items: center;
  gap: 6px;
}

.telemetry-label svg {
  width: 14px;
  height: 14px;
  color: var(--apricot-coral);
}

/* ===================================================================
   全新交互功能：测速码表 (Interactive Tachometer)
   =================================================================== */
.tachometer-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 42px 36px;
  box-shadow: var(--shadow-md);
  margin-top: 55px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.tachometer-header {
  text-align: center;
  margin-bottom: 30px;
}

.tachometer-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.tachometer-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
}

.tachometer-interactive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

/* 码表图形区 */
.gauge-visual-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.gauge-svg-wrap {
  width: 290px;
  height: 200px;
  position: relative;
}

.gauge-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.gauge-bg-arc {
  fill: none;
  stroke: var(--bg-subtle);
  stroke-width: 18;
  stroke-linecap: round;
}

.gauge-active-arc {
  fill: none;
  stroke: url(#gaugeGradient);
  stroke-width: 18;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.gauge-needle {
  transform-origin: 145px 165px;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gauge-center-cap {
  fill: var(--obsidian-dark);
  stroke: var(--apricot-coral);
  stroke-width: 4;
}

[data-theme="dark"] .gauge-center-cap {
  fill: #ffffff;
}

.gauge-value-display {
  margin-top: -15px;
  text-align: center;
}

.gauge-speed-val {
  font-size: 3.2rem;
  font-weight: 950;
  color: var(--text-main);
  line-height: 1;
  letter-spacing: -1px;
}

.gauge-speed-unit {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--apricot-coral);
  margin-left: 4px;
}

.gauge-status-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 6px;
}

/* 码表右侧控制台与指标 */
.gauge-controls-box {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.gauge-toggle-group {
  background: var(--bg-alt);
  padding: 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  display: flex;
  gap: 6px;
}

.gauge-btn {
  flex: 1;
  padding: 12px 18px;
  border-radius: var(--radius-full);
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.gauge-btn.active {
  background: var(--spring-wind-gradient);
  color: #fff;
  box-shadow: 0 4px 14px var(--apricot-glow);
}

/* 滑块微调控制 */
.throttle-slider-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.interactive-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--bg-subtle);
  outline: none;
  cursor: pointer;
}

.interactive-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--apricot-coral);
  box-shadow: 0 0 10px var(--apricot-coral);
  cursor: grab;
  transition: transform 0.15s ease;
}

.interactive-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* 码表实时指标卡片横排 */
.tachometer-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.metric-pill {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
}

.metric-pill-title {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 600;
  margin-bottom: 4px;
}

.metric-pill-val {
  font-size: 1.15rem;
  font-weight: 850;
  color: var(--text-main);
}

/* ===================================================================
   全新交互功能：分屏竞速对比矩阵 (Comparison Matrix)
   =================================================================== */
.comparison-section {
  padding: 70px 0;
}

.comparison-matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 44px 38px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.comparison-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-top: 36px;
  position: relative;
}

/* 分界线 */
.comparison-split-grid::before {
  content: "VS";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--spring-wind-gradient);
  color: #fff;
  font-weight: 900;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--apricot-glow);
  z-index: 10;
}

.compare-col {
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
}

.compare-col.bad {
  border-color: rgba(239, 68, 68, 0.3);
}

.compare-col.good {
  border-color: var(--apricot-coral);
  box-shadow: 0 0 20px rgba(255, 111, 89, 0.15);
  background: var(--bg-card-solid);
}

.compare-col-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.compare-col-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-badge {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 750;
}

.badge-bad {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.badge-good {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

/* 竞速进度条赛道 */
.race-track-box {
  margin: 20px 0;
}

.race-track-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 650;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.race-track-bg {
  width: 100%;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  overflow: hidden;
  position: relative;
}

.race-progress-bar {
  height: 100%;
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.race-progress-bar.bad-bar {
  background: #ef4444;
}

.race-progress-bar.good-bar {
  background: var(--spring-wind-gradient);
  box-shadow: 0 0 10px var(--apricot-coral);
}

.compare-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 22px;
}

.compare-spec-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.92rem;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
}

.compare-spec-item:last-child {
  border-bottom: none;
}

.spec-name {
  color: var(--text-muted);
}

.spec-val-bad {
  font-weight: 700;
  color: #ef4444;
}

.spec-val-good {
  font-weight: 750;
  color: var(--tech-emerald);
}

/* ===================================================================
   通用区块样式 (Section Base)
   =================================================================== */
.section {
  padding: 85px 0;
}

.section-alt {
  background-color: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 55px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 750;
  letter-spacing: 1px;
  color: var(--apricot-coral);
  background: rgba(255, 111, 89, 0.1);
  padding: 5px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 850;
  letter-spacing: -0.8px;
  margin-bottom: 14px;
  color: var(--text-main);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   产品核心优势 (3个图文卡片 - 合法网络性能图标)
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--apricot-coral);
  box-shadow: var(--shadow-lg);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--spring-wind-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

/* 合法网络性能图标包裹容器 (仪表盘、光纤脉冲、防护网) */
.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(255, 111, 89, 0.1);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--apricot-coral);
}

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

.feature-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-main);
}

.feature-text {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 22px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid var(--border-color);
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-main);
  font-weight: 550;
}

.feature-list svg {
  width: 16px;
  height: 16px;
  color: var(--tech-emerald);
  flex-shrink: 0;
}

/* ===================================================================
   场景支持卡片 (流媒体图卡 + AI支持图卡)
   =================================================================== */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.ecosystem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 42px 36px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.ecosystem-card:hover {
  transform: translateY(-4px);
  border-color: var(--apricot-coral);
  box-shadow: var(--shadow-lg);
}

.ecosystem-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 750;
  margin-bottom: 18px;
}

.badge-stream {
  background: rgba(244, 63, 94, 0.12);
  color: #f43f5e;
}

.badge-ai {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
}

.ecosystem-title {
  font-size: 1.7rem;
  font-weight: 850;
  margin-bottom: 12px;
  color: var(--text-main);
}

.ecosystem-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.service-badges-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.service-badge-item {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.service-badge-item:hover {
  border-color: var(--apricot-coral);
  background: var(--bg-card);
  transform: translateY(-1px);
}

.service-icon-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-netflix { background: #e50914; box-shadow: 0 0 6px rgba(229, 9, 20, 0.5); }
.dot-disney { background: #113ccf; box-shadow: 0 0 6px rgba(17, 60, 207, 0.5); }
.dot-youtube { background: #ff0000; box-shadow: 0 0 6px rgba(255, 0, 0, 0.5); }
.dot-hbo { background: #5822b4; box-shadow: 0 0 6px rgba(88, 34, 180, 0.5); }
.dot-spotify { background: #1db954; box-shadow: 0 0 6px rgba(29, 185, 84, 0.5); }
.dot-twitch { background: #9146ff; box-shadow: 0 0 6px rgba(145, 70, 255, 0.5); }

.dot-chatgpt { background: #10a37f; box-shadow: 0 0 6px rgba(16, 163, 127, 0.5); }
.dot-claude { background: #d97706; box-shadow: 0 0 6px rgba(217, 119, 6, 0.5); }
.dot-midjourney { background: #3b82f6; box-shadow: 0 0 6px rgba(59, 130, 246, 0.5); }
.dot-gemini { background: #8b5cf6; box-shadow: 0 0 6px rgba(139, 92, 246, 0.5); }
.dot-copilot { background: #2563eb; box-shadow: 0 0 6px rgba(37, 99, 235, 0.5); }
.dot-huggingface { background: #f59e0b; box-shadow: 0 0 6px rgba(245, 158, 11, 0.5); }

.ecosystem-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.highlight-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-muted);
}

.highlight-chip svg {
  width: 14px;
  height: 14px;
  color: var(--tech-emerald);
}

/* ===================================================================
   套餐价格对比表 (参考网上真实主流专线机场价格)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 42px 34px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: var(--apricot-coral);
  box-shadow: var(--shadow-lg);
}

/* 热门推荐卡片突出 */
.pricing-card.featured {
  border: 2px solid var(--apricot-coral);
  background: var(--bg-card);
  box-shadow: var(--shadow-coral-glow);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-4px);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--spring-wind-gradient);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 5px 20px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 14px var(--apricot-glow);
}

.plan-header {
  margin-bottom: 22px;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 850;
  color: var(--text-main);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.plan-price-wrapper {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.currency-symbol {
  font-size: 1.6rem;
  font-weight: 750;
  color: var(--text-main);
}

.price-number {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-main);
  letter-spacing: -1px;
}

.price-cycle {
  font-size: 0.92rem;
  color: var(--text-light);
  font-weight: 600;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 34px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-main);
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.icon-check {
  color: var(--tech-emerald);
}

.icon-cross {
  color: var(--text-light);
  opacity: 0.45;
}

.plan-feature-item.disabled {
  color: var(--text-light);
  text-decoration: line-through;
  opacity: 0.7;
}

.btn-pricing-cta {
  display: block;
  text-align: center;
  width: 100%;
  padding: 15px 20px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  background: var(--bg-alt);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-pricing-cta:hover {
  background: var(--apricot-coral);
  color: #fff !important;
  border-color: var(--apricot-coral);
  box-shadow: 0 4px 15px var(--apricot-glow);
}

.btn-pricing-cta:active {
  transform: translateY(1px) scale(0.98);
}

.pricing-card.featured .btn-pricing-cta {
  background: var(--spring-wind-gradient);
  color: #fff !important;
  border: none;
  box-shadow: 0 6px 20px var(--apricot-glow);
}

.pricing-card.featured .btn-pricing-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 111, 89, 0.5);
}

/* ===================================================================
   全新模块：客户端平台停靠坞 (Client Platform Strip & OS Banner)
   =================================================================== */
.client-dock-section {
  padding: 70px 0;
}

.client-dock-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 44px 38px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

/* 操作系统自动检测条 */
.os-detect-banner {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  background: rgba(255, 111, 89, 0.1);
  border: 1px solid var(--apricot-coral);
  margin-bottom: 30px;
  font-size: 0.94rem;
  font-weight: 650;
  color: var(--text-main);
}

.os-icon-detected {
  width: 20px;
  height: 20px;
  color: var(--apricot-coral);
}

.client-platforms-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.platform-dock-item {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.platform-dock-item:hover, .platform-dock-item.highlighted {
  border-color: var(--apricot-coral);
  background: var(--bg-card-solid);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--apricot-glow);
}

.platform-icon {
  width: 38px;
  height: 38px;
  color: var(--text-main);
}

.platform-dock-item:hover .platform-icon, .platform-dock-item.highlighted .platform-icon {
  color: var(--apricot-coral);
}

.platform-name {
  font-size: 0.95rem;
  font-weight: 750;
  color: var(--text-main);
}

.platform-client-hint {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ===================================================================
   用户真实口碑与评价 (Testimonials)
   =================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

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

/* 合法网络信号评级条 (非通用星星) */
.network-status-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--tech-emerald);
}

.rating-dots-row {
  display: flex;
  gap: 4px;
}

.rating-signal-bar {
  width: 4px;
  height: 12px;
  border-radius: 2px;
  background: var(--tech-emerald);
}

.testimonial-text {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 111, 89, 0.12);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--apricot-coral);
  font-size: 1rem;
}

.user-meta-name {
  font-size: 0.95rem;
  font-weight: 750;
  color: var(--text-main);
  line-height: 1.3;
}

.user-meta-tag {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* ===================================================================
   常见问题解答 (FAQ Accordion)
   =================================================================== */
.faq-wrapper {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

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

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 26px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-main);
  gap: 16px;
  transition: color var(--transition-fast);
}

.faq-question-btn:hover {
  color: var(--apricot-coral);
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--text-light);
  flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--apricot-coral);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 0 26px;
}

.faq-item.active .faq-answer {
  padding-bottom: 22px;
}

.faq-answer-inner {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===================================================================
   底部呼吁横幅 (Bottom CTA Banner)
   =================================================================== */
.bottom-cta-box {
  background: var(--spring-wind-gradient);
  border-radius: var(--radius-xl);
  padding: 55px 40px;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 45px var(--apricot-glow);
  margin-bottom: 60px;
}

.bottom-cta-box h2 {
  font-size: 2.35rem;
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: -0.6px;
}

.bottom-cta-box p {
  font-size: 1.12rem;
  opacity: 0.95;
  max-width: 640px;
  margin: 0 auto 30px;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 38px;
  border-radius: var(--radius-full);
  background: #ffffff;
  color: var(--apricot-coral) !important;
  font-size: 1.05rem;
  font-weight: 800;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  transition: all var(--transition-fast);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
}

/* ===================================================================
   严格极简页脚 (Footer) - 仅保留4个标题 + 版权
   =================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 44px 0 38px;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 38px;
  list-style: none;
  margin-bottom: 24px;
}

.footer-link {
  font-size: 1rem;
  font-weight: 650;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  padding: 4px 6px;
}

.footer-link:hover {
  color: var(--apricot-coral);
}

.footer-copyright {
  text-align: center;
  font-size: 0.86rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===================================================================
   子页面及推荐资讯文章页样式 (Subpages & Insights)
   =================================================================== */
.subpage-hero {
  padding: 65px 0 42px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-alt);
}

.subpage-title {
  font-size: 2.65rem;
  font-weight: 900;
  letter-spacing: -0.8px;
  margin-bottom: 14px;
  color: var(--text-main);
}

.subpage-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.subpage-content {
  padding: 55px 0 80px;
}

.subpage-article {
  max-width: 880px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
}

.article-section {
  margin-bottom: 42px;
}

.article-section:last-child {
  margin-bottom: 0;
}

.article-heading {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-heading svg {
  width: 24px;
  height: 24px;
  color: var(--apricot-coral);
}

.article-text {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.article-list {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 18px 0;
}

.article-list li {
  position: relative;
  padding-left: 24px;
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.article-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--apricot-coral);
}

.highlight-box {
  background: rgba(255, 111, 89, 0.08);
  border-left: 4px solid var(--apricot-coral);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px;
  margin: 22px 0;
}

.highlight-box p {
  color: var(--text-main);
  font-size: 0.98rem;
  line-height: 1.75;
  font-weight: 600;
}

/* 推荐资讯卡片网格 */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-bottom: 45px;
}

.insight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.insight-card:hover {
  transform: translateY(-4px);
  border-color: var(--apricot-coral);
  box-shadow: var(--shadow-md);
}

.insight-tag {
  font-size: 0.78rem;
  font-weight: 750;
  color: var(--apricot-coral);
  background: rgba(255, 111, 89, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  width: fit-content;
  margin-bottom: 14px;
}

.insight-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.45;
}

.insight-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex-grow: 1;
  margin-bottom: 18px;
}

.insight-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-light);
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

/* 网站地图树形链接卡片 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.sitemap-card {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
}

.sitemap-card h3 {
  font-size: 1.25rem;
  font-weight: 750;
  margin-bottom: 16px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sitemap-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.sitemap-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.sitemap-links a:hover {
  color: var(--apricot-coral);
}

/* ===================================================================
   深度 SEO 科普文章专用版式 (TOC、面包屑、FAQ、相关阅读)
   =================================================================== */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb-nav a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.breadcrumb-nav a:hover {
  color: var(--apricot-coral);
}

.breadcrumb-sep {
  opacity: 0.5;
}

.article-header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 30px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.article-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 111, 89, 0.1);
  color: var(--apricot-coral);
  font-weight: 700;
  font-size: 0.82rem;
}

/* 目录 (Table of Contents) 容器 */
.article-toc {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--apricot-coral);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 36px;
}

.toc-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: toc-counter;
}

.toc-item a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.96rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  line-height: 1.5;
}

.toc-item a:hover {
  color: var(--apricot-coral);
  text-decoration: underline;
}

.toc-num {
  font-weight: 700;
  color: var(--apricot-coral);
  font-size: 0.88rem;
}

/* 正文段落与排版强化 */
.article-body h2 {
  font-size: 1.6rem;
  font-weight: 850;
  color: var(--text-main);
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-main);
  margin: 24px 0 12px;
}

.article-body p {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 18px;
}

/* 突出内链胶囊 */
.internal-link {
  color: var(--apricot-coral);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--transition-fast);
}

.internal-link:hover {
  opacity: 0.85;
}

.internal-link-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 111, 89, 0.12);
  color: var(--apricot-coral);
  font-weight: 750;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.internal-link-pill:hover {
  background: var(--apricot-coral);
  color: #fff !important;
  transform: translateY(-1px);
}

/* 文章中的专用对比表格与代码块 */
.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.article-table th {
  background: var(--bg-alt);
  padding: 14px 18px;
  font-weight: 750;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-muted);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-code-block {
  background: var(--obsidian-dark);
  color: #f8fafc;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 20px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9rem;
  overflow-x: auto;
  border: 1px solid var(--border-color);
}

[data-theme="dark"] .article-code-block {
  background: #090510;
}

/* 文章内嵌入式 FAQ 模块 */
.article-faq-section {
  margin: 45px 0 35px;
  padding-top: 30px;
  border-top: 2px dashed var(--border-color);
}

.article-faq-title {
  font-size: 1.45rem;
  font-weight: 850;
  color: var(--text-main);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 相关阅读推荐模块 (Related Articles) */
.related-articles-section {
  margin-top: 55px;
  padding-top: 36px;
  border-top: 1px solid var(--border-color);
}

.related-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.related-card {
  background: var(--bg-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all var(--transition-fast);
}

.related-card:hover {
  border-color: var(--apricot-coral);
  background: var(--bg-card);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.related-card h4 {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-main);
  line-height: 1.4;
}

.related-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.5;
  margin: 0;
}

/* ===================================================================
   响应式媒体查询 (@media) - 确保手机端完美单栏与大点击热区
   =================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.7rem;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .client-platforms-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--bg-card-solid);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }

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

  .menu-toggle-btn {
    display: flex;
  }

  .btn-nav-cta {
    display: none;
  }

  .hero-section {
    padding: 50px 0 40px;
  }

  .hero-title {
    font-size: 2.15rem;
    letter-spacing: -0.6px;
  }

  .hero-desc {
    font-size: 1.05rem;
    margin-bottom: 30px;
  }

  .hero-cta-group {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    min-height: 50px;
    font-size: 1rem;
  }

  .hero-telemetry-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* 码表手机端单栏垂直 */
  .tachometer-interactive-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  /* 竞速分屏手机端单栏 */
  .comparison-split-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .comparison-split-grid::before {
    top: 50%;
  }

  .client-platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.85rem;
  }

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

  .ecosystem-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .service-badges-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }

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

  .bottom-cta-box {
    padding: 40px 20px;
  }

  .bottom-cta-box h2 {
    font-size: 1.85rem;
  }

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

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

  .subpage-title {
    font-size: 2rem;
  }

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

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