/* ==========================================================================
   老猫云 (ioldcatyun.homes) - 全局原生 CSS 样式表
   视觉风格：黑金赛博与深空极夜 (Obsidian Cyber & Golden Amber)
   纯原生 CSS、零重型框架、秒开级性能、高无障碍性与全终端自适应
   ========================================================================== */

:root {
  /* 老猫云专属主题色彩系统：曜石黑夜、温暖琥珀金与极速激光蓝 */
  --bg-primary: #080c14;
  --bg-secondary: #0d1322;
  --bg-tertiary: #131c31;
  --bg-card: rgba(15, 23, 42, 0.78);
  --bg-card-hover: rgba(22, 33, 60, 0.92);
  --bg-glass: rgba(13, 19, 34, 0.85);
  --bg-accent-soft: rgba(245, 158, 11, 0.08);

  /* 边框与微光反射系统 */
  --border-color: rgba(245, 158, 11, 0.2);
  --border-hover: rgba(245, 158, 11, 0.5);
  --border-accent: rgba(245, 158, 11, 0.65);
  --border-highlight: rgba(255, 255, 255, 0.12);
  --border-subtle: rgba(255, 255, 255, 0.06);

  /* 文字对比度规范 (正文 >= 4.5:1，核心标题 >= 7:1) */
  --text-main: #f8fafc;
  --text-light: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* 品牌核心色彩：琥珀金 (Amber Gold) 与 激光蓝 (Laser Cyan) */
  --color-primary: #f59e0b;
  --color-primary-rgb: 245, 158, 11;
  --color-primary-dark: #d97706;
  --color-accent: #06b6d4;
  --color-accent-rgb: 6, 182, 212;
  --color-secondary: #3b82f6;
  --color-gold: #fbbf24;
  --color-success: #10b981;
  --color-tag-bg: rgba(245, 158, 11, 0.12);

  /* 专属流光渐变体系 */
  --color-gradient: linear-gradient(135deg, #f59e0b 0%, #ea580c 50%, #06b6d4 100%);
  --color-gradient-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
  --color-gradient-hover: linear-gradient(135deg, #fde047 0%, #fbbf24 50%, #38bdf8 100%);
  --color-btn-glow: linear-gradient(135deg, rgba(245, 158, 11, 0.5) 0%, rgba(234, 88, 12, 0.35) 100%);
  --color-card-border: linear-gradient(135deg, rgba(245, 158, 11, 0.4) 0%, rgba(6, 182, 212, 0.2) 100%);

  /* 光影与景深系统 */
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.65), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-lg: 0 20px 45px -10px rgba(0, 0, 0, 0.8), 0 0 28px rgba(245, 158, 11, 0.18);
  --shadow-glow: 0 0 32px rgba(245, 158, 11, 0.3);
  --shadow-glow-strong: 0 0 48px rgba(245, 158, 11, 0.48);

  /* 几何圆角与度量体系 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-full: 9999px;

  --container-width: 1180px;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --header-height: 74px;
}

/* 基础重置与排版规范 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.68;
  letter-spacing: 0.015em;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background: 
    radial-gradient(circle at 18% 12%, rgba(245, 158, 11, 0.14) 0%, transparent 48%),
    radial-gradient(circle at 82% 25%, rgba(6, 182, 212, 0.12) 0%, transparent 42%),
    radial-gradient(circle at 50% 85%, rgba(217, 119, 6, 0.08) 0%, transparent 50%),
    var(--bg-primary);
  background-attachment: fixed;
}

/* 无障碍键盘访问直达锚点 */
.skip-link {
  position: absolute;
  top: -999px;
  left: 1.5rem;
  background: var(--color-gradient-gold);
  color: #000;
  padding: 0.75rem 1.5rem;
  z-index: 9999;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1.25rem;
  outline: 3px solid #fff;
  outline-offset: 3px;
}

/* 键盘焦点样式统一无障碍保障 */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* 全局容器 */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   页眉与导航体系 (Site Header & Nav)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--color-gradient-gold);
  color: #000;
  font-size: 1.3rem;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.4);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.main-nav a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.98rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

.main-nav a:hover {
  color: var(--color-gold);
}

.main-nav .nav-cta {
  padding: 0.55rem 1.35rem;
  border-radius: var(--radius-full);
  background: var(--color-gradient-gold);
  color: #000;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.main-nav .nav-cta:hover {
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.55);
}

/* ==========================================================================
   按钮系统规范 (至少 44x44px 触控热区)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.85rem;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  touch-action: manipulation;
  user-select: none;
}

.btn-primary {
  background: var(--color-gradient-gold);
  color: #000;
  border-color: rgba(251, 191, 36, 0.5);
  box-shadow: 0 6px 24px rgba(245, 158, 11, 0.4);
}

.btn-primary:hover {
  background: var(--color-gradient-hover);
  color: #000;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(245, 158, 11, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(245, 158, 11, 0.12);
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-2px);
}

.btn-sm {
  min-height: 42px;
  padding: 0.5rem 1.25rem;
  font-size: 0.92rem;
}

/* ==========================================================================
   首屏主视觉区 (Hero Section)
   ========================================================================== */
.hero-section {
  padding: 5rem 0 4rem;
  text-align: center;
  position: relative;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  background: var(--color-tag-bg);
  border: 1px solid var(--border-color);
  color: var(--color-gold);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1.8rem;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.025em;
  margin-bottom: 1.25rem;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title .gradient-text {
  background: var(--color-gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 1.2rem;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 2.8rem;
}

.hero-highlights {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  color: var(--text-light);
  font-size: 0.95rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  max-width: 820px;
  margin: 0 auto;
}

.hero-highlights span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   通用区块与排版规范
   ========================================================================== */
.section {
  padding: 5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 3.5rem;
}

.section-subtitle {
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* 栅格布局 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

/* 核心优势卡片 */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  position: relative;
  transition: all var(--transition-normal);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-lg);
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.2);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #fff;
}

.feature-text {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
  flex-grow: 1;
}

/* ==========================================================================
   流媒体与 AI 支持图卡区块
   ========================================================================== */
.media-ai-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.media-ai-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-normal);
}

.media-ai-card:hover {
  border-color: var(--color-gold);
}

.media-ai-badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.tag-item {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   套餐价格对比表 (Pricing Table with horizontal scroll)
   ========================================================================== */
.pricing-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  backdrop-filter: blur(16px);
}

.pricing-table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.pricing-table caption {
  padding: 1.25rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  caption-side: top;
}

.pricing-table th,
.pricing-table td {
  padding: 1.35rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

.pricing-table th {
  background: rgba(245, 158, 11, 0.08);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

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

.pricing-table tr:hover td {
  background: rgba(245, 158, 11, 0.05);
}

.plan-name {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  display: block;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.plan-price {
  font-size: 1.85rem;
  font-weight: 900;
  color: var(--color-gold);
}

.plan-price small {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
}

.popular-badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  background: var(--color-gradient-gold);
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  margin-left: 0.5rem;
}

/* ==========================================================================
   用户评价区块 (Reviews Section)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
}

.review-card:hover {
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
}

.review-stars {
  color: var(--color-gold);
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.review-content {
  color: var(--text-light);
  font-size: 0.96rem;
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 1.25rem;
}

.review-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.user-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-gradient-gold);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.05rem;
}

.user-name {
  font-weight: 700;
  color: #fff;
}

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

/* ==========================================================================
   FAQ 常见问题解答 (原生 details / summary)
   ========================================================================== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

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

.faq-item[open] {
  border-color: var(--color-gold);
  background: var(--bg-card-hover);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.faq-question {
  padding: 1.35rem 1.65rem;
  font-size: 1.12rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-question::after {
  content: "+";
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--color-gold);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-question::after {
  content: "−";
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.65rem 1.5rem;
  color: var(--text-light);
  font-size: 1rem;
  line-height: 1.75;
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.2rem;
}

.faq-answer a {
  color: var(--color-gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.faq-answer a:hover {
  color: var(--text-main);
}

/* ==========================================================================
   知识科普文章专栏与独立文章页
   ========================================================================== */
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.knowledge-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.85rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

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

.knowledge-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1rem;
}

.knowledge-card h3 a {
  color: #fff;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.knowledge-card h3 a:hover {
  color: var(--color-gold);
}

.knowledge-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 1.5rem;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-gold);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.92rem;
}

.read-more:hover {
  text-decoration: underline;
}

/* 文章详情页专属排版 */
.article-header {
  padding: 3rem 0 2rem;
  max-width: 860px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-light);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

.article-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 1.25rem;
  color: #fff;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--text-dim);
  font-size: 0.92rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2.5rem;
}

.article-body {
  max-width: 860px;
  margin: 0 auto;
  font-size: 1.08rem;
  line-height: 1.85;
  color: var(--text-light);
}

.article-body h2 {
  font-size: 1.85rem;
  font-weight: 800;
  margin: 2.5rem 0 1.2rem;
  color: #fff;
  border-left: 4px solid var(--color-gold);
  padding-left: 1rem;
}

.article-body h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2rem 0 1rem;
  color: #fff;
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body ul,
.article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.8rem;
}

.article-body li {
  margin-bottom: 0.6rem;
}

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

.article-callout {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.75rem;
  margin: 2rem 0;
}

.article-callout h4 {
  color: var(--color-gold);
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   页脚规范 (严格只保留四个链接打开新页面展示)
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 1.02rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-gold);
}

.footer-copy {
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* ==========================================================================
   响应式媒体查询 (@media) 保证 360px / 390px / 768px / 1440px 完美适配
   ========================================================================== */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.65rem;
  }
  
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 66px;
  }

  .site-header .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .main-nav {
    gap: 1rem;
  }

  .main-nav a {
    font-size: 0.9rem;
  }

  .main-nav .nav-cta {
    padding: 0.45rem 1rem;
    font-size: 0.88rem;
  }

  .hero-section {
    padding: 3.5rem 0 2.5rem;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.15rem;
  }

  .hero-desc {
    font-size: 0.98rem;
  }

  .grid-3,
  .media-ai-container,
  .reviews-grid,
  .knowledge-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .section {
    padding: 3.5rem 0;
  }

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

  .footer-nav {
    flex-direction: column;
    gap: 1rem;
  }

  .article-title {
    font-size: 1.95rem;
  }

  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (max-width: 390px) {
  .hero-title {
    font-size: 1.85rem;
  }

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

@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;
  }
}