/* ===== 全局样式 - 游戏音效素材库 ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=ZCOOL+KuaiLe&display=swap');

:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #a29bfe;
  --secondary: #00cec9;
  --secondary-dark: #00b5b0;
  --accent: #fd79a8;
  --accent-dark: #e84393;
  --bg-dark: #0a0a1a;
  --bg-card: #12122a;
  --bg-section: #0e0e22;
  --bg-hover: #1a1a3e;
  --text-primary: #f0f0f5;
  --text-secondary: #b0b0c8;
  --text-muted: #7878a0;
  --border-color: #2a2a4a;
  --gradient-1: linear-gradient(135deg, #6c5ce7 0%, #00cec9 100%);
  --gradient-2: linear-gradient(135deg, #fd79a8 0%, #6c5ce7 100%);
  --gradient-3: linear-gradient(135deg, #00cec9 0%, #6c5ce7 50%, #fd79a8 100%);
  --shadow-sm: 0 2px 8px rgba(108,92,231,0.15);
  --shadow-md: 0 4px 20px rgba(108,92,231,0.2);
  --shadow-lg: 0 8px 40px rgba(108,92,231,0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 干扰标签区块隐藏 */
.jammer-block {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
  pointer-events: none;
  user-select: none;
  z-index: -9999;
}

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 导航栏 ===== */
.site-header {
  background: rgba(10,10,26,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0;
  z-index: 1000;
  position: relative;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.site-logo .logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.site-logo .logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 6px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.3s;
}

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

.breadcrumb .separator {
  margin: 0 8px;
  color: var(--text-muted);
}

/* ===== 英雄区域 ===== */
.hero-section {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
  background: radial-gradient(ellipse at 30% 50%, rgba(108,92,231,0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(0,206,201,0.1) 0%, transparent 60%);
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(108,92,231,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  pointer-events: none;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(108,92,231,0.15);
  border: 1px solid rgba(108,92,231,0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 20px;
  background: var(--gradient-3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
  line-height: 1.9;
}

/* ===== 搜索框 ===== */
.search-box {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 16px 24px;
  padding-right: 140px;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box input:focus {
  border-color: var(--primary);
}

.search-box .search-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  padding: 10px 28px;
  background: var(--gradient-1);
  border: none;
  border-radius: var(--radius-xl);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.3s;
  font-family: inherit;
}

.search-box .search-btn:hover {
  opacity: 0.9;
}

.search-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.filter-tag {
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
}

.filter-tag:hover,
.filter-tag.active {
  background: rgba(108,92,231,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* ===== 区块标题 ===== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.section-header h2 span {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 音效分类卡片 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  text-align: center;
  transition: all 0.4s ease;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transition: transform 0.4s;
}

.category-card:hover::before {
  transform: scaleX(1);
}

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

.category-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: rgba(108,92,231,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.category-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.category-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.category-count {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 12px;
  background: rgba(0,206,201,0.1);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--secondary);
}

/* ===== 轮播图 ===== */
.carousel-section {
  padding: 60px 0;
  background: var(--bg-section);
}

.carousel-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform 0.6s ease;
}

.carousel-slide {
  min-width: 100%;
  position: relative;
}

.carousel-slide .slide-bg {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.carousel-slide .slide-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 32px;
  background: linear-gradient(transparent, rgba(10,10,26,0.95));
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.slide-overlay h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.slide-overlay p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.carousel-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}

.carousel-dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 5px;
}

/* ===== 热门音效列表 ===== */
.sound-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sound-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.4s;
  text-decoration: none;
  color: inherit;
}

.sound-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.sound-card .card-thumb {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.sound-card .card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

.sound-card:hover .card-thumb img {
  transform: scale(1.05);
}

.play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  background: rgba(108,92,231,0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}

.sound-card:hover .play-overlay {
  opacity: 1;
}

.play-overlay::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-left: 16px solid #fff;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  margin-left: 4px;
}

.card-body {
  padding: 18px;
}

.card-body h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.card-meta {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.card-tag {
  padding: 2px 10px;
  background: rgba(108,92,231,0.1);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--primary-light);
}

/* ===== 专家推荐 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.4s;
  text-decoration: none;
  color: inherit;
}

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

.expert-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
  overflow: hidden;
}

.expert-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.expert-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.expert-title {
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 12px;
}

.expert-quote {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.7;
  padding: 0 8px;
}

/* ===== 用户评价 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.3s;
}

.review-card:hover {
  border-color: var(--primary);
}

.review-stars {
  color: #ffd700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.review-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

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

.review-author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
}

.review-author-info h5 {
  font-size: 0.9rem;
  font-weight: 600;
}

.review-author-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== 通用区块 ===== */
.section-padding {
  padding: 70px 0;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s;
  font-size: 0.85rem;
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-col ul a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
}

.age-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: rgba(253,121,168,0.15);
  border: 1px solid rgba(253,121,168,0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

/* ===== 内页通用 ===== */
.page-hero {
  padding: 50px 0 40px;
  background: radial-gradient(ellipse at 50% 50%, rgba(108,92,231,0.1) 0%, transparent 70%);
}

.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 12px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 700px;
}

/* ===== 音效详情页 ===== */
.detail-main {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
}

.detail-player {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.waveform {
  height: 80px;
  background: rgba(108,92,231,0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}

.waveform-bar {
  position: absolute;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: height 0.2s;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-1);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  transition: opacity 0.3s;
}

.play-btn:hover {
  opacity: 0.9;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-1);
  border-radius: 2px;
  width: 35%;
}

.time-display {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-width: 90px;
  text-align: right;
}

.detail-info {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table tr {
  border-bottom: 1px solid var(--border-color);
}

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

.info-table th {
  text-align: left;
  padding: 12px 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  width: 100px;
}

.info-table td {
  padding: 12px 0;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.detail-sidebar .sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}

.sidebar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.license-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0,206,201,0.15);
  border: 1px solid rgba(0,206,201,0.3);
  border-radius: 50px;
  color: var(--secondary);
  font-size: 0.85rem;
  font-weight: 600;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
}

.faq-question:hover {
  background: var(--bg-hover);
}

.faq-question .arrow {
  transition: transform 0.3s;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.4s ease;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  padding: 0 24px 18px;
  max-height: 500px;
}

/* ===== 教程卡片 ===== */
.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tutorial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.4s;
  text-decoration: none;
  color: inherit;
}

.tutorial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.tutorial-thumb {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.tutorial-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tutorial-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  background: var(--primary);
  border-radius: 50px;
  font-size: 0.75rem;
  color: #fff;
  font-weight: 600;
}

.tutorial-body {
  padding: 20px;
}

.tutorial-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}

.tutorial-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 评论区 ===== */
.comment-list {
  margin-top: 24px;
}

.comment-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
}

.comment-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.comment-content h5 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.comment-content .comment-date {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.comment-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-1);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary-light);
}

.btn-outline:hover {
  background: rgba(108,92,231,0.1);
}

/* ===== 动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== 脉冲动画 ===== */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(108,92,231,0.4); }
  50% { box-shadow: 0 0 20px 8px rgba(108,92,231,0.1); }
}

.pulse {
  animation: pulse-glow 3s infinite;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .sound-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .expert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .review-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tutorial-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .detail-main {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 16px;
  }
  .nav-menu.open {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-section {
    padding: 50px 0 60px;
  }
  .category-grid {
    grid-template-columns: 1fr 1fr;
  }
  .sound-list {
    grid-template-columns: 1fr;
  }
  .expert-grid {
    grid-template-columns: 1fr;
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .tutorial-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .section-header h2 {
    font-size: 1.6rem;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.6rem;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .search-box input {
    padding-right: 100px;
  }
  .search-box .search-btn {
    padding: 8px 16px;
    font-size: 0.85rem;
  }
}

/* ===== 内容文章样式 ===== */
.article-content {
  max-width: 800px;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
}

.article-content ul,
.article-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.8;
}

/* ===== 隐私政策 ===== */
.policy-content {
  max-width: 800px;
  margin: 0 auto;
}

.policy-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 28px 0 14px;
  color: var(--text-primary);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.policy-content p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
}

/* ===== 统计数据 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 40px 0;
}

.stat-item {
  text-align: center;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}