/* ==========================================================================
   瞬云机场 (ShunYun Speed) - 庞克可爱风 (Cute Cyberpunk) 官方样式表
   主色调：赛博霓虹蓝 (#00f0ff) | 梦幻霓虹紫 (#b347ff / #a855f7) | 纯净极光白 (#ffffff)
   纯原生 CSS，零外部依赖，极速秒开
   ========================================================================== */

:root {
  /* 品牌色彩系统 */
  --bg-primary: #0a0b1a;
  --bg-secondary: #12142d;
  --bg-card: rgba(22, 26, 60, 0.75);
  --bg-card-hover: rgba(35, 41, 95, 0.85);
  --border-neon: rgba(179, 71, 255, 0.35);
  --border-cyan: rgba(0, 240, 255, 0.4);
  
  /* 核心文字与强调色 */
  --text-main: #ffffff;
  --text-muted: #b8c1ec;
  --text-dim: #7f8bb8;
  --cyber-cyan: #00f0ff;
  --cyber-purple: #b347ff;
  --cyber-pink: #ff54b0;
  --cyber-glow: 0 0 20px rgba(0, 240, 255, 0.45);
  --purple-glow: 0 0 20px rgba(179, 71, 255, 0.45);

  /* 尺寸与间距 */
  --max-width: 1200px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition-normal: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: radial-gradient(circle at 15% 15%, rgba(179, 71, 255, 0.18) 0%, transparent 45%),
              radial-gradient(circle at 85% 65%, rgba(0, 240, 255, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 50% 90%, rgba(255, 84, 176, 0.12) 0%, transparent 40%),
              var(--bg-primary);
  background-attachment: fixed;
}

/* 键盘跳过直达内容 (无障碍 Accessibility) */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--cyber-cyan);
  color: #050614;
  padding: 12px 20px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 15px;
  outline: 3px solid #ffffff;
}

/* 锚点滚动留白，防止被固定导航栏遮挡 */
[id] {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

a {
  color: var(--cyber-cyan);
  text-decoration: none;
  transition: var(--transition-normal);
}
a:hover {
  color: #ffffff;
  text-shadow: 0 0 8px var(--cyber-cyan);
}
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--cyber-cyan);
  outline-offset: 3px;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   背景云朵漂浮动画 (Floating Clouds Animation)
   ========================================================================== */
.cloud-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.cyber-cloud {
  position: absolute;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  pointer-events: none;
  opacity: 0.85;
  filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.35)) drop-shadow(0 0 30px rgba(179, 71, 255, 0.2));
  transition: opacity 0.3s ease;
}

/* 6朵不同层次、速度与大小的动态云朵 */
.cloud-1 {
  width: 250px;
  height: 156px;
  top: 10%;
  left: -280px;
  background-image: url('cloud-cute-1.svg');
  animation: floatCloudHorizontal 38s linear infinite, cloudBobbing 5s ease-in-out infinite;
}

.cloud-2 {
  width: 200px;
  height: 128px;
  top: 36%;
  left: -230px;
  background-image: url('cloud-cute-2.svg');
  opacity: 0.75;
  animation: floatCloudHorizontal 48s linear 10s infinite, cloudBobbing 6s ease-in-out 1.5s infinite;
}

.cloud-3 {
  width: 150px;
  height: 102px;
  top: 68%;
  left: -180px;
  background-image: url('cloud-cute-3.svg');
  opacity: 0.9;
  animation: floatCloudHorizontal 32s linear 4s infinite, cloudBobbing 4s ease-in-out 0.8s infinite;
}

.cloud-4 {
  width: 180px;
  height: 115px;
  top: 22%;
  left: -200px;
  background-image: url('cloud-cute-2.svg');
  opacity: 0.6;
  filter: drop-shadow(0 0 12px rgba(179, 71, 255, 0.4));
  animation: floatCloudHorizontal 54s linear 22s infinite, cloudBobbing 7s ease-in-out 2s infinite;
}

.cloud-5 {
  width: 270px;
  height: 168px;
  top: 80%;
  left: -300px;
  background-image: url('cloud-cute-1.svg');
  opacity: 0.8;
  animation: floatCloudHorizontal 42s linear 16s infinite, cloudBobbing 5.5s ease-in-out 3s infinite;
}

.cloud-6 {
  width: 130px;
  height: 88px;
  top: 50%;
  left: -150px;
  background-image: url('cloud-cute-3.svg');
  opacity: 0.7;
  animation: floatCloudHorizontal 36s linear 8s infinite, cloudBobbing 4.5s ease-in-out 1.2s infinite;
}

/* 横向穿行 */
@keyframes floatCloudHorizontal {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(100vw + 360px));
  }
}

/* 上下微浮动动态特效 (Bobbing Effect) */
@keyframes cloudBobbing {
  0%, 100% {
    margin-top: 0px;
  }
  50% {
    margin-top: -14px;
  }
}

/* ==========================================================================
   页面顶栏 (Header & Navbar)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(10, 11, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-neon);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo-box {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.45));
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.logo-box:hover .logo-icon {
  transform: scale(1.12) rotate(-5deg);
}

.logo-icon img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #ffffff, var(--cyber-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 4px;
  position: relative;
}

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

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyber-cyan);
  box-shadow: 0 0 8px var(--cyber-cyan);
}

.nav-badge-pill {
  background: linear-gradient(90deg, var(--cyber-purple), var(--cyber-pink));
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-left: 4px;
}

/* 按钮通用 */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  text-align: center;
}

.cta-btn-primary {
  background: linear-gradient(135deg, var(--cyber-cyan) 0%, #2f81f7 50%, var(--cyber-purple) 100%);
  color: #060714;
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
}
.cta-btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 28px rgba(0, 240, 255, 0.7), 0 0 35px rgba(179, 71, 255, 0.5);
  color: #060714;
}

.cta-btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border: 1px solid var(--border-cyan);
  backdrop-filter: blur(8px);
}
.cta-btn-secondary:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--cyber-cyan);
  color: var(--cyber-cyan);
  transform: translateY(-2px);
}

/* ==========================================================================
   主视觉区 (Hero Section)
   ========================================================================== */
.hero-section {
  position: relative;
  z-index: 1;
  padding: 80px 0 60px;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background: rgba(179, 71, 255, 0.15);
  border: 1px solid var(--cyber-purple);
  color: #f1dbff;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: 0 0 12px rgba(179, 71, 255, 0.3);
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, var(--cyber-cyan) 60%, var(--cyber-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.35rem;
  color: var(--cyber-cyan);
  font-weight: 600;
  margin-bottom: 16px;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.hero-desc {
  max-width: 760px;
  margin: 0 auto 36px;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.spec-item {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}
.spec-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--cyber-cyan);
  display: block;
  margin-bottom: 4px;
}
.spec-label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ==========================================================================
   通用区块标题
   ========================================================================== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  z-index: 1;
}

.section-tag {
  color: var(--cyber-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #ffffff;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

/* ==========================================================================
   核心优势介绍 (3个图文卡片)
   ========================================================================== */
.features-section {
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--cyber-cyan);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.2);
}
.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon-svg {
  width: 32px;
  height: 32px;
  fill: var(--cyber-cyan);
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
}

.feature-list li {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.feature-list li::before {
  content: "✔";
  color: var(--cyber-cyan);
  font-weight: bold;
}

/* ==========================================================================
   流媒体与 AI 支持图卡
   ========================================================================== */
.services-section {
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
}

.service-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(179, 71, 255, 0.2);
  color: #e5afff;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  color: #ffffff;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.platform-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.platform-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: #ffffff;
}
.platform-chip:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--cyber-cyan);
}

/* ==========================================================================
   套餐价格对比表 (Pricing Section)
   ========================================================================== */
.pricing-section {
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

.pricing-table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-neon);
  background: var(--bg-card);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  margin-bottom: 30px;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 680px;
}

.pricing-table caption {
  padding: 16px 20px;
  font-weight: 700;
  font-size: 1.1rem;
  text-align: left;
  background: rgba(10, 11, 26, 0.6);
  color: var(--cyber-cyan);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pricing-table th, .pricing-table td {
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.pricing-table th {
  background: rgba(18, 20, 45, 0.95);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
}

.pricing-table tbody tr:hover {
  background: rgba(0, 240, 255, 0.05);
}

.pricing-table .plan-name {
  font-weight: 700;
  color: #ffffff;
  font-size: 1.05rem;
}

.pricing-table .popular-tag {
  background: linear-gradient(90deg, var(--cyber-purple), var(--cyber-pink));
  color: #fff;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-left: 6px;
}

.pricing-table .price-val {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--cyber-cyan);
}
.pricing-table .price-period {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   用户评价 (Testimonials)
   ========================================================================== */
.testimonials-section {
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.reviewer-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyber-purple), var(--cyber-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #060714;
}

.reviewer-name {
  font-weight: 700;
  color: #fff;
  font-size: 0.95rem;
}
.reviewer-tag {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.review-stars {
  color: #f59e0b;
  font-size: 0.9rem;
}

.review-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   常见问题解答 (FAQ) - 使用 <details open>
   ========================================================================== */
.faq-section {
  position: relative;
  z-index: 1;
  padding: 60px 0;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: var(--cyber-cyan);
}

.faq-summary {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(18, 20, 45, 0.4);
}

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

.faq-summary::after {
  content: "▾";
  font-size: 1.2rem;
  color: var(--cyber-cyan);
  transition: transform 0.25s ease;
}

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

.faq-content {
  padding: 16px 24px 22px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-content p {
  margin-bottom: 8px;
}

/* ==========================================================================
   页脚 (Footer) - 仅保留四个规定标题链接
   ========================================================================== */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 80px;
  padding: 40px 0 32px;
  background: #060714;
  border-top: 1px solid var(--border-neon);
}

.footer-nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  list-style: none;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-nav-list a {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  padding: 8px 12px;
}

.footer-nav-list a:hover {
  color: var(--cyber-cyan);
}

.footer-bottom {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 20px;
}

/* ==========================================================================
   文章与内页排版 (Article & Inner Pages)
   ========================================================================== */
.page-container {
  max-width: 860px;
  margin: 40px auto 80px;
  padding: 0 24px;
}

.page-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}

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

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-lg);
  padding: 40px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: #e2e8f0;
}

.article-content h2 {
  font-size: 1.55rem;
  color: #ffffff;
  margin: 32px 0 16px;
  border-left: 4px solid var(--cyber-cyan);
  padding-left: 12px;
}

.article-content h3 {
  font-size: 1.25rem;
  color: var(--cyber-cyan);
  margin: 24px 0 12px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
}

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

.article-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 12px;
  flex-wrap: wrap;
}

.article-tag {
  background: rgba(0, 240, 255, 0.15);
  color: var(--cyber-cyan);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.article-faq-box {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px dashed rgba(255, 255, 255, 0.15);
}

/* 文章列表卡片网格 (知识科普页专用) */
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-neon);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyber-cyan);
  box-shadow: 0 8px 24px rgba(0, 240, 255, 0.18);
}

.article-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.45;
}
.article-card-title a {
  color: #ffffff;
}
.article-card-title a:hover {
  color: var(--cyber-cyan);
}

.article-card-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 12px;
}

/* ==========================================================================
   移动端与响应式适配 (@media)
   针对 360px, 390px, 768px, 1440px 极致调校
   ========================================================================== */
@media (max-width: 992px) {
  .features-grid, .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .services-grid, .article-grid {
    grid-template-columns: 1fr;
  }
  .hero-specs {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: auto;
  }
  .site-header {
    padding: 12px 0;
  }
  .nav-wrap {
    flex-direction: column;
    gap: 14px;
  }
  .nav-links {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subtitle {
    font-size: 1.15rem;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .cta-btn {
    width: 100%;
    min-height: 48px;
  }
  .article-content {
    padding: 24px 18px;
  }
  .footer-nav-list {
    gap: 20px;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  .hero-specs {
    grid-template-columns: 1fr;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .cta-btn {
    width: 100%;
    min-height: 48px;
  }
}

/* 动效降低偏好 (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;
  }
  .cyber-cloud {
    display: none;
  }
}