/* ==========================================================================
   GLaDOS 网络加速 - 复古赛车海报风样式表
   主题配色：
   - 深紫夜空: #111327
   - 橙色夕阳: #FF8C4B
   - 青色路面: #83E8FA
   - 淡紫远山: #D5B2FF
   ========================================================================== */

:root {
  --color-sky: #111327;
  --color-sky-alt: #171A35;
  --color-sunset: #FF8C4B;
  --color-sunset-glow: #FFA470;
  --color-cyan: #83E8FA;
  --color-cyan-glow: rgba(131, 232, 250, 0.45);
  --color-mountain: #D5B2FF;
  --color-mountain-deep: #7D6B9E;
  --color-surface: #1A1E3D;
  --color-surface-hover: #22274F;
  --color-card-border: rgba(131, 232, 250, 0.25);
  --color-card-border-hover: rgba(255, 140, 75, 0.5);
  --color-text-main: #FFFFFF;
  --color-text-sub: #BAC0E2;
  --color-text-dim: #7F87AF;
  --color-yellow: #FFE373;
  --color-danger: #FF6666;

  --font-heading: "Impact", "Arial Black", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;

  --container-max: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --speed-road-normal: 1.4s;
  --speed-road-boost: 0.35s;
}

/* 全局重置与基础规范 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-sky);
  color: var(--color-text-main);
  line-height: 1.68;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  /* 确保正文不倾斜、不持续变形 */
  font-style: normal;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* 背景复古噪点与扫描线纹理 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: 
    radial-gradient(circle at 50% 10%, rgba(255, 140, 75, 0.12) 0%, transparent 60%),
    linear-gradient(180deg, rgba(17, 19, 39, 0.6) 0%, rgba(17, 19, 39, 0.95) 100%);
  z-index: -1;
}

a {
  color: var(--color-cyan);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

a:hover, a:focus-visible {
  color: var(--color-sunset);
  text-shadow: 0 0 8px rgba(255, 140, 75, 0.4);
}

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

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

/* 无障碍键盘获得焦点样式 */
:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

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

/* 顶部徽标导航条 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(17, 19, 39, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid rgba(131, 232, 250, 0.18);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

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

/* 复古赛车品牌LOGO */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-badge {
  background: linear-gradient(135deg, var(--color-sunset), var(--color-cyan));
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px rgba(255, 140, 75, 0.4);
}

.logo-badge svg {
  width: 24px;
  height: 24px;
  fill: #111327;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  letter-spacing: 1.5px;
  color: #FFFFFF;
  text-transform: uppercase;
  line-height: 1.1;
  text-shadow: 2px 2px 0px rgba(255, 140, 75, 0.7);
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--color-cyan);
  letter-spacing: 1px;
  font-weight: 600;
}

/* 导航链接 */
.nav-menu {
  display: none;
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
    list-style: none;
  }

  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-sub);
    padding: 6px 4px;
    position: relative;
    transition: all 0.2s ease;
  }

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

  .nav-link::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--color-cyan);
    box-shadow: 0 0 8px var(--color-cyan);
    transition: width 0.25s ease;
  }

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

/* 导航控制组 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 动画控制按钮 */
.btn-control-anim {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(131, 232, 250, 0.3);
  color: var(--color-cyan);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-control-anim:hover {
  background: rgba(131, 232, 250, 0.15);
  border-color: var(--color-cyan);
  box-shadow: 0 0 10px rgba(131, 232, 250, 0.3);
}

.btn-control-anim .anim-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #38ef7d;
  box-shadow: 0 0 6px #38ef7d;
}

.btn-control-anim.is-paused .anim-status-dot {
  background-color: var(--color-danger);
  box-shadow: 0 0 6px var(--color-danger);
}

/* 汉堡菜单按钮 (移动端) */
.mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  background: rgba(26, 30, 61, 0.8);
  padding: 8px;
  color: var(--color-cyan);
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-cyan);
  transition: all 0.25s ease;
}

.mobile-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
}

/* 移动端菜单抽屉 */
.mobile-drawer {
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  height: calc(100vh - 72px);
  background: rgba(17, 19, 39, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  padding: 24px;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  z-index: 999;
  border-top: 1px solid var(--color-card-border);
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-drawer-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.mobile-nav-link {
  display: block;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  color: var(--color-cyan);
  border-left-color: var(--color-cyan);
  background: rgba(131, 232, 250, 0.08);
}

/* 核心 CTA 按钮 */
.btn-cta-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-sunset) 0%, #E66A23 100%);
  color: #111327;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 15px rgba(255, 140, 75, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}

.btn-cta-primary:hover,
.btn-cta-primary:focus-visible {
  color: #111327;
  background: linear-gradient(135deg, #FFA26B 0%, var(--color-sunset) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(255, 140, 75, 0.6), inset 0 1px 0 #FFF;
  text-shadow: none;
}

.btn-cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(131, 232, 250, 0.1);
  color: var(--color-cyan);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-cyan);
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-cta-secondary:hover,
.btn-cta-secondary:focus-visible {
  background: rgba(131, 232, 250, 0.2);
  color: #FFFFFF;
  box-shadow: 0 0 15px rgba(131, 232, 250, 0.4);
  transform: translateY(-2px);
}

.btn-cta-lg {
  padding: 14px 28px;
  font-size: 1.1rem;
}

/* ==========================================================================
   Hero 首屏区块
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 48px 0 64px 0;
  overflow: hidden;
  border-bottom: 2px solid rgba(131, 232, 250, 0.15);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    padding: 24px 0;
  }
}

/* Hero 左侧内容 */
.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(213, 178, 255, 0.12);
  border: 1px solid var(--color-mountain);
  color: var(--color-mountain);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  width: fit-content;
  letter-spacing: 1px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  line-height: 1.15;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 1px;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.2rem;
  }
}

@media (min-width: 1200px) {
  .hero-title {
    font-size: 3.8rem;
  }
}

.hero-title .title-accent {
  color: var(--color-sunset);
  text-shadow: 0 0 20px rgba(255, 140, 75, 0.5);
}

.hero-title .title-cyan {
  color: var(--color-cyan);
  text-shadow: 0 0 20px rgba(131, 232, 250, 0.5);
}

.hero-description {
  font-size: 1.05rem;
  color: var(--color-text-sub);
  line-height: 1.75;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 10px;
}

.hero-specs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 14px;
  padding-top: 20px;
  border-top: 1px dashed rgba(255, 255, 255, 0.15);
}

.hero-spec-item {
  display: flex;
  flex-direction: column;
}

.hero-spec-label {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

.hero-spec-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-cyan);
}

/* ==========================================================================
   Hero 右侧复古赛车与透视公路 (原生 SVG / CSS 动画)
   ========================================================================== */
.hero-visual-card {
  position: relative;
  background: linear-gradient(180deg, #111327 0%, #1A1938 45%, #251B38 100%);
  border: 2px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(131, 232, 250, 0.15);
  overflow: hidden;
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.poster-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.poster-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 300px;
  background: #111327;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* 舞台内背景元素 */
/* 橙色夕阳 */
.poster-sunset {
  position: absolute;
  top: 12%;
  left: 50%;
  transform: translateX(-50%);
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(180deg, #FFE373 0%, var(--color-sunset) 60%, #E64B23 100%);
  box-shadow: 0 0 45px rgba(255, 140, 75, 0.65);
}

/* 夕阳复古横栅纹理 */
.poster-sunset::after {
  content: "";
  position: absolute;
  top: 45%;
  left: 0;
  width: 100%;
  height: 55%;
  background: repeating-linear-gradient(
    180deg,
    transparent 0px,
    transparent 4px,
    #111327 4px,
    #111327 8px
  );
}

/* 淡紫远山 (保持安静，无平移抖动) */
.poster-mountains {
  position: absolute;
  bottom: 45%;
  left: 0;
  width: 100%;
  height: 90px;
  pointer-events: none;
}

/* 透视路面与短线 */
.poster-highway {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(180deg, #161830 0%, #0d0f1f 100%);
  perspective: 160px;
  overflow: hidden;
  border-top: 2px solid var(--color-cyan);
  box-shadow: 0 -4px 15px rgba(131, 232, 250, 0.35);
}

/* 3D 梯形道路网格 */
.highway-surface {
  position: absolute;
  top: 0;
  left: -20%;
  width: 140%;
  height: 100%;
  transform: rotateX(55deg);
  transform-origin: top center;
  background: 
    linear-gradient(90deg, 
      transparent 0%, 
      transparent 22%, 
      rgba(131, 232, 250, 0.15) 22%, 
      rgba(131, 232, 250, 0.05) 48%, 
      transparent 48%, 
      transparent 52%, 
      rgba(131, 232, 250, 0.05) 52%, 
      rgba(131, 232, 250, 0.15) 78%, 
      transparent 78%, 
      transparent 100%
    );
}

/* 路面中心短线 - 原生真实动画 */
.highway-stripes {
  position: absolute;
  top: 0;
  left: 50%;
  width: 6px;
  height: 100%;
  transform: translateX(-50%) rotateX(55deg);
  transform-origin: top center;
  background: repeating-linear-gradient(
    180deg,
    var(--color-cyan) 0px,
    var(--color-cyan) 30px,
    transparent 30px,
    transparent 70px
  );
  background-size: 100% 100px;
  animation: roadMove var(--speed-road-normal) linear infinite;
}

@keyframes roadMove {
  0% {
    background-position: 0 -100px;
  }
  100% {
    background-position: 0 0px;
  }
}

/* 试驾加速态 */
.highway-stripes.is-boosted {
  animation-duration: var(--speed-road-boost) !important;
  box-shadow: 0 0 15px var(--color-cyan);
}

/* 动画暂停状态 */
.animation-paused .highway-stripes,
.animation-paused .car-wrapper {
  animation-play-state: paused !important;
}

/* 原创像素/矢量赛车 */
.car-wrapper {
  position: absolute;
  bottom: 14%;
  left: 50%;
  transform: translateX(-50%);
  width: 160px;
  height: 90px;
  z-index: 10;
  animation: carBob 2.2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes carBob {
  0%, 100% {
    transform: translateX(-50%) translateY(0px);
  }
  50% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* 汽车影子 */
.car-shadow {
  position: absolute;
  bottom: -4px;
  left: 10%;
  width: 80%;
  height: 10px;
  background: rgba(0, 0, 0, 0.65);
  border-radius: 50%;
  filter: blur(4px);
}

/* 试驾互动控制栏 */
.poster-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.test-drive-status {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

.test-drive-status .status-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-cyan);
}

.test-drive-status.active .status-indicator {
  background-color: var(--color-sunset);
  box-shadow: 0 0 8px var(--color-sunset);
}

.btn-test-drive {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 140, 75, 0.15);
  border: 1px solid var(--color-sunset);
  color: var(--color-sunset);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-test-drive:hover,
.btn-test-drive:focus-visible {
  background: var(--color-sunset);
  color: #111327;
  box-shadow: 0 0 12px rgba(255, 140, 75, 0.5);
}

/* ==========================================================================
   通用板块标题与样式
   ========================================================================== */
.section {
  padding: 72px 0;
  position: relative;
}

.section-alt {
  background: rgba(23, 26, 53, 0.6);
  border-top: 1px solid rgba(131, 232, 250, 0.1);
  border-bottom: 1px solid rgba(131, 232, 250, 0.1);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 48px auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-sunset);
  background: rgba(255, 140, 75, 0.1);
  border: 1px solid rgba(255, 140, 75, 0.3);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.1rem;
  letter-spacing: 1px;
  color: #FFFFFF;
  line-height: 1.25;
  margin-bottom: 14px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
  }
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-sub);
  line-height: 1.7;
}

/* ==========================================================================
   维修站步骤 (Pit Stop Steps)
   ========================================================================== */
.pitstop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .pitstop-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .pitstop-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pitstop-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.pitstop-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-cyan);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 15px rgba(131, 232, 250, 0.2);
}

.pitstop-step-num {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  line-height: 1;
  color: rgba(131, 232, 250, 0.2);
  position: absolute;
  top: 16px;
  right: 18px;
}

.pitstop-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(255, 140, 75, 0.12);
  border: 1px solid rgba(255, 140, 75, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-sunset);
  margin-bottom: 20px;
}

.pitstop-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.pitstop-desc {
  font-size: 0.92rem;
  color: var(--color-text-sub);
  line-height: 1.65;
}

/* ==========================================================================
   仪表说明 (Dashboard / Gauges - 优势说明)
   ========================================================================== */
.gauges-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .gauges-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gauges-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.gauge-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.gauge-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-sunset), var(--color-cyan));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.gauge-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-card-border-hover);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

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

.gauge-meter-visual {
  width: 100%;
  height: 90px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gauge-tag {
  font-size: 0.78rem;
  color: var(--color-cyan);
  font-family: var(--font-mono);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.gauge-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.gauge-desc {
  font-size: 0.92rem;
  color: var(--color-text-sub);
  line-height: 1.65;
}

/* ==========================================================================
   旅行路线图 (Travel Route Map - 节点示意)
   ========================================================================== */
.route-map-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  position: relative;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5);
}

.map-disclaimer {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 140, 75, 0.12);
  border: 1px solid rgba(255, 140, 75, 0.3);
  color: var(--color-sunset);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  margin-bottom: 24px;
}

.nodes-schematic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  nodes-schematic-grid, .nodes-schematic-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .nodes-schematic-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.node-item-card {
  background: rgba(17, 19, 39, 0.7);
  border: 1px solid rgba(131, 232, 250, 0.15);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.node-item-card:hover {
  border-color: var(--color-cyan);
  transform: translateY(-2px);
}

.node-badge-code {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: #111327;
  background: var(--color-cyan);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.node-info-block h4 {
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.node-info-block p {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  line-height: 1.5;
}

.node-status-line {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--color-text-dim);
}

.node-status-line .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-cyan);
}

/* ==========================================================================
   目的地场景 (Destination Scenes - AI 与流媒体)
   ========================================================================== */
.scenes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .scenes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.scene-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.scene-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-sunset);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.scene-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(131, 232, 250, 0.1);
  border: 1px solid rgba(131, 232, 250, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  margin-bottom: 20px;
}

.scene-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.scene-desc {
  font-size: 0.92rem;
  color: var(--color-text-sub);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.scene-tag-pill {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-mountain);
}

/* ==========================================================================
   通行方案 (Pass / Toll Plans - 套餐展示)
   ========================================================================== */
.plans-data-notice {
  background: rgba(255, 140, 75, 0.1);
  border: 1px solid rgba(255, 140, 75, 0.35);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 36px;
  font-size: 0.9rem;
  color: var(--color-sunset-glow);
  line-height: 1.6;
}

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

@media (min-width: 640px) {
  .plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .plans-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .plans-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.plan-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.plan-card.featured {
  border-color: var(--color-sunset);
  background: linear-gradient(180deg, #22234B 0%, var(--color-surface) 100%);
  box-shadow: 0 8px 30px rgba(255, 140, 75, 0.2);
}

.plan-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-cyan);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-sunset);
  color: #111327;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 999px;
  text-transform: uppercase;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.plan-target {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-bottom: 20px;
  min-height: 40px;
}

.plan-price-box {
  background: rgba(17, 19, 39, 0.7);
  border-radius: var(--radius-sm);
  padding: 16px 10px;
  margin-bottom: 20px;
  text-align: center;
  border: 1px solid rgba(131, 232, 250, 0.25);
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.3);
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 3px;
}

.plan-price-currency {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-sunset);
}

.plan-price-val {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1;
  letter-spacing: 0.5px;
}

.plan-price-cycle {
  font-size: 0.88rem;
  color: var(--color-cyan);
  font-weight: 600;
}

.plan-price-status {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-yellow);
}

.plan-price-note {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  margin-top: 6px;
  font-weight: 500;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--color-text-sub);
}

.plan-feature-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-cyan);
  flex-shrink: 0;
}

.plan-btn-wrap {
  margin-top: auto;
}

.plan-btn-wrap .btn-cta-primary,
.plan-btn-wrap .btn-cta-secondary {
  width: 100%;
}

/* ==========================================================================
   道路手册 (Road Manuals - 9 篇文章图卡布局)
   布局规范：桌面 3 列、平板 2 列、手机 1 列
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  text-decoration: none;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-cyan);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 15px rgba(131, 232, 250, 0.2);
}

.article-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1d2145 0%, #151833 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.article-card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(17, 19, 39, 0.75) 0%, rgba(17, 19, 39, 0.1) 40%, transparent 65%);
  pointer-events: none;
  z-index: 1;
}

.article-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.45s ease;
  filter: brightness(0.95) contrast(1.05);
}

.article-card:hover .article-card-img {
  transform: scale(1.06);
  filter: brightness(1.05) contrast(1.12);
}

.article-card-cover svg {
  width: 64px;
  height: 64px;
  color: var(--color-cyan);
  opacity: 0.85;
  transition: transform 0.3s ease;
}

.article-card:hover .article-card-cover svg {
  transform: scale(1.1);
  color: var(--color-sunset);
}

.article-badge-category {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: rgba(17, 19, 39, 0.88);
  border: 1px solid var(--color-cyan);
  color: var(--color-cyan);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.article-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-bottom: 8px;
}

.article-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.45;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

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

.article-card-snippet {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 16px;
  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;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.86rem;
  color: var(--color-cyan);
  font-weight: 600;
}

/* ==========================================================================
   演示评价 (Demo Reviews - 明确标注演示体验，不制造虚假评分)
   ========================================================================== */
.reviews-disclaimer {
  background: rgba(213, 178, 255, 0.08);
  border: 1px solid rgba(213, 178, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 30px;
  font-size: 0.88rem;
  color: var(--color-mountain);
  line-height: 1.6;
}

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

@media (min-width: 640px) {
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .reviews-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.review-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-sunset), var(--color-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #111327;
  font-size: 1rem;
}

.review-author h4 {
  font-size: 0.98rem;
  color: #FFFFFF;
  margin-bottom: 2px;
}

.review-badge-demo {
  display: inline-block;
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-dim);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.review-content {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 1.65;
  font-style: normal;
}

/* ==========================================================================
   常见问题 FAQ (可折叠手风琴，无障碍键盘支持)
   ========================================================================== */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item.is-open {
  border-color: var(--color-cyan);
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  background: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: #FFFFFF;
  transition: color 0.2s ease;
}

.faq-trigger:hover,
.faq-trigger:focus-visible {
  color: var(--color-cyan);
}

.faq-icon-arrow {
  width: 20px;
  height: 20px;
  color: var(--color-cyan);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-item.is-open .faq-icon-arrow {
  transform: rotate(180deg);
  color: var(--color-sunset);
}

.faq-panel {
  display: none;
  padding: 0 22px 20px 22px;
  font-size: 0.95rem;
  color: var(--color-text-sub);
  line-height: 1.7;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  margin-top: 4px;
  padding-top: 16px;
}

.faq-item.is-open .faq-panel {
  display: block;
}

/* ==========================================================================
   Footer 页脚区块
   包含必须呈现的 3 个相关站点（不加 nofollow）与商业 CTA（加 nofollow）
   ========================================================================== */
.site-footer {
  background: #0B0D1B;
  border-top: 2px solid rgba(131, 232, 250, 0.2);
  padding: 60px 0 30px 0;
  color: var(--color-text-sub);
  position: relative;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 48px;
}

@media (min-width: 640px) {
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-top-grid {
    grid-template-columns: 2fr 1fr 1.2fr 1fr;
  }
}

.footer-brand-col p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 14px;
  color: var(--color-text-dim);
}

.footer-col-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link-item a {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  transition: color 0.2s ease;
}

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

/* 底部友情/相关站点推荐栏 */
.footer-related-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(131, 232, 250, 0.15);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 36px;
}

.footer-related-box h4 {
  font-size: 0.95rem;
  color: var(--color-cyan);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-related-item a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(17, 19, 39, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: #FFFFFF;
  transition: all 0.2s ease;
}

.footer-related-item a:hover {
  border-color: var(--color-sunset);
  color: var(--color-sunset);
  background: rgba(255, 140, 75, 0.1);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
  color: var(--color-text-dim);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    text-align: left;
  }
}

/* ==========================================================================
   无障碍与减弱动效偏好 (prefers-reduced-motion)
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .highway-stripes {
    animation: none !important;
  }

  .car-wrapper {
    animation: none !important;
  }
}