/* =========================================================
   珠海乐乐文化传播有限公司 - 官方网站样式表
   标准规范：现代科技文创风格 · 响应式 · 纯静态安全合规
   主色调：#5174e9
   ========================================================= */

:root {
  --accent: #5174e9;
  --accent-hover: #3d5fd9;
  --accent-dark: #3251c4;
  --accent-light: #708ef5;
  --accent-soft: #eef2fe;
  --accent-softer: #f5f8ff;
  --accent-glow: rgba(81, 116, 233, 0.25);
  
  --ink-primary: #1a2233;
  --ink-secondary: #4a5568;
  --ink-muted: #718096;
  --ink-light: #a0aec0;
  
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-subtle: #f1f5f9;
  
  --line-subtle: #edf2f7;
  --line-strong: #e2e8f0;
  
  --shadow-xs: 0 1px 2px rgba(26, 34, 51, 0.04);
  --shadow-sm: 0 2px 6px rgba(26, 34, 51, 0.05);
  --shadow-md: 0 8px 20px rgba(26, 34, 51, 0.06);
  --shadow-lg: 0 16px 32px rgba(81, 116, 233, 0.12);
  --shadow-card-hover: 0 12px 28px rgba(81, 116, 233, 0.14), 0 4px 10px rgba(26, 34, 51, 0.04);
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --font-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-w: 1200px;
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-base);
  color: var(--ink-secondary);
  background-color: var(--bg-page);
  line-height: 1.75;
  letter-spacing: 0.2px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

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

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

/* =========================================================
   顶部导航栏（基于 #5174e9 品牌识别）
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(81, 116, 233, 0.12);
  box-shadow: 0 2px 12px rgba(81, 116, 233, 0.05);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.logo-mark {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: 10px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}

.logo-name {
  font-size: 17.5px;
  font-weight: 700;
  color: var(--ink-primary);
  letter-spacing: 0.5px;
  line-height: 1.1;
  margin: 0;
  padding: 0;
}

.logo-sub {
  font-size: 9.5px;
  font-weight: 600;
  color: #1a2233;
  letter-spacing: 3.6px;
  line-height: 1;
  margin-top: 0;
  padding-left: 1px;
}

.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
}

.main-nav ul {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-secondary);
  border-radius: 8px;
  transition: var(--transition-smooth);
}

.main-nav a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.main-nav a.active {
  color: #ffffff;
  font-weight: 600;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(81, 116, 233, 0.3);
}

/* =========================================================
   首页 Hero 区域（主色调 #5174e9 品牌渐变）
   ========================================================= */
.hero {
  position: relative;
  background: linear-gradient(135deg, #3d5fd9 0%, #5174e9 50%, #688bf8 100%);
  color: #ffffff;
  padding: 80px 24px 74px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(81, 116, 233, 0.2);
}

.hero-title {
  font-size: 36px;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: 1.5px;
  margin-bottom: 22px;
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.hero-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-tags span {
  display: inline-block;
  padding: 6px 18px;
  font-size: 13.5px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #ffffff;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: var(--transition-smooth);
}

.hero-tags span:hover {
  background: #ffffff;
  color: var(--accent);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.hero-sub {
  max-width: 820px;
  margin: 0 auto;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 400;
}

/* =========================================================
   二级页面专属 Banner（主色调 #5174e9 统一）
   ========================================================= */
.page-banner {
  background: linear-gradient(135deg, #3d5fd9 0%, #5174e9 60%, #688bf8 100%);
  color: #ffffff;
  padding: 52px 24px 46px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(81, 116, 233, 0.15);
}

.page-banner h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 1.5px;
  margin-bottom: 6px;
  color: #ffffff;
}

.page-banner .banner-sub {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 4px;
  color: rgba(255, 255, 255, 0.88);
  text-transform: uppercase;
}

/* =========================================================
   通用板块 Section
   ========================================================= */
.section {
  padding: 64px 0;
}

.section.alt {
  background-color: #ffffff;
  border-top: 1px solid var(--line-subtle);
  border-bottom: 1px solid var(--line-subtle);
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--ink-primary);
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.section-title::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 10px auto 0;
}

.section-sub {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-muted);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 4px;
}

.lead {
  font-size: 15.5px;
  line-height: 2;
  color: var(--ink-secondary);
  background: var(--bg-card);
  padding: 26px 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.3px;
}

/* =========================================================
   六大板块 Grid 视觉卡片（首页）
   ========================================================= */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.biz-card {
  position: relative;
  background: var(--bg-card);
  padding: 32px 28px 26px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.biz-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(81, 116, 233, 0.35);
}

.biz-card h3 {
  font-size: 18.5px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 12px;
  letter-spacing: 0.4px;
}

.biz-card p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-muted);
  flex: 1;
  margin-bottom: 20px;
}

.biz-card .more {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-smooth);
}

.biz-card:hover .more {
  color: var(--accent-hover);
  transform: translateX(4px);
}

/* =========================================================
   作品画廊 Grid 展示卡片（短剧 / 动漫 / 艺术品）
   ========================================================= */
.work-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.work-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.work-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(81, 116, 233, 0.35);
}

/* 占位画板与数字艺术框 */
.ph {
  background: radial-gradient(circle at 50% 50%, #f0f4fd 0%, #e5ecfb 100%);
  border-bottom: 1px solid var(--line-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 1px;
  position: relative;
  user-select: none;
}

.ph::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed rgba(81, 116, 233, 0.3);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.ph-work {
  aspect-ratio: 16 / 9;
}

.ph-anime {
  aspect-ratio: 4 / 3;
}

.ph-art {
  aspect-ratio: 1 / 1;
}

.work-card .info {
  padding: 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.work-card .info h4 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 8px;
}

.work-card .info p {
  font-size: 13.5px;
  color: var(--ink-muted);
  line-height: 1.65;
  margin-bottom: 14px;
  flex: 1;
}

.ph-tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(81, 116, 233, 0.25);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

/* =========================================================
   音乐娱乐列表展示
   ========================================================= */
.music-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 960px;
  margin: 0 auto;
}

.music-item {
  background: var(--bg-card);
  padding: 18px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 20px;
  transition: var(--transition-smooth);
}

.music-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(81, 116, 233, 0.35);
}

.music-item .no {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  min-width: 32px;
}

.music-item .txt {
  flex: 1;
}

.music-item .txt h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 4px;
}

.music-item .txt p {
  font-size: 13.5px;
  color: var(--ink-muted);
}

/* =========================================================
   活动展示 Grid
   ========================================================= */
.activity-block {
  margin-bottom: 44px;
}

.activity-block:last-child {
  margin-bottom: 0;
}

.activity-block h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line-strong);
  display: flex;
  align-items: center;
  gap: 10px;
}

.activity-block h3::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--accent);
  border-radius: 2px;
}

.event-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.event-card {
  background: var(--bg-card);
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.event-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(81, 116, 233, 0.35);
}

.event-card .ph {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  border: 1px solid var(--line-subtle);
}

.event-card h4 {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 8px;
}

.event-card p {
  font-size: 13.5px;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* =========================================================
   关于我们页面（制度专区与联系方式）
   ========================================================= */
.about-section {
  margin-bottom: 48px;
}

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

.about-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 16px;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-section h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--accent);
  border-radius: 2px;
}

.about-section p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-secondary);
  margin-bottom: 20px;
}

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

.policy-link {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  padding: 18px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.policy-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(81, 116, 233, 0.4);
}

.policy-link .mark {
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #ffffff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 700;
  box-shadow: 0 4px 10px rgba(81, 116, 233, 0.28);
  flex-shrink: 0;
}

.policy-link h4 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 4px;
}

.policy-link p {
  font-size: 13px;
  color: var(--ink-muted);
  margin: 0;
  line-height: 1.4;
}

.contact-list {
  list-style: none;
  background: var(--bg-card);
  padding: 24px 30px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-list li {
  display: flex;
  align-items: center;
  font-size: 15px;
  color: var(--ink-secondary);
}

.contact-list b {
  color: var(--ink-primary);
  min-width: 100px;
  font-weight: 600;
}

/* =========================================================
   制度全文文档样式 (policies/*.html)
   ========================================================= */
.policy-doc {
  max-width: 900px;
  margin: 40px auto 60px;
  padding: 44px 50px;
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-subtle);
  box-shadow: var(--shadow-md);
}

.policy-doc .doc-head {
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--line-strong);
  margin-bottom: 32px;
}

.policy-doc h1 {
  font-size: 25px;
  font-weight: 800;
  color: var(--ink-primary);
  margin-bottom: 10px;
}

.policy-doc .doc-meta {
  font-size: 13.5px;
  color: var(--ink-muted);
}

.policy-doc .toc {
  background: var(--accent-softer);
  border: 1px solid rgba(81, 116, 233, 0.2);
  border-radius: var(--radius-sm);
  padding: 20px 26px;
  margin-bottom: 32px;
}

.policy-doc .toc h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-dark);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.policy-doc .toc ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}

.policy-doc .toc li {
  font-size: 14px;
  color: var(--ink-secondary);
}

.policy-doc h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-primary);
  margin: 30px 0 14px;
  padding-left: 12px;
  border-left: 3.5px solid var(--accent);
}

.policy-doc p {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-secondary);
  margin-bottom: 14px;
  text-align: justify;
}

.policy-doc ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.policy-doc li {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-secondary);
  margin-bottom: 8px;
}

/* =========================================================
   页脚 (双行居中规范)
   ========================================================= */
.site-footer {
  background: #1a2233;
  color: #94a3b8;
  padding: 24px 24px;
  font-size: 13px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  line-height: 1.7;
}

.footer-bottom > div {
  text-align: center;
  width: 100%;
}

.footer-bottom a {
  color: #94a3b8;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.footer-bottom a:hover {
  color: #ffffff;
}

/* 返回顶部按钮 */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(81, 116, 233, 0.35);
  z-index: 999;
  transition: var(--transition-smooth);
}

.back-top:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
}

/* =========================================================
   移动端与响应式适配
   ========================================================= */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }
  .biz-grid, .work-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .policy-links, .event-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 880px) {
  /* 移动端顶部与汉堡菜单适配 */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .header-inner {
    height: 64px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
  }

  .logo {
    gap: 10px;
  }

  .logo-mark {
    width: 38px;
    height: 38px;
  }

  .logo-name {
    font-size: 16px;
  }

  .logo-sub {
    font-size: 8.5px;
    letter-spacing: 3.2px;
  }

  /* 汉堡按钮 */
  .nav-toggle {
    display: none;
  }

  .nav-toggle-label {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    cursor: pointer;
    border-radius: 8px;
    background: var(--bg-soft);
    border: 1px solid var(--line-strong);
    padding: 8px;
    z-index: 102;
    transition: var(--transition-smooth);
  }

  .nav-toggle-label:hover {
    background: var(--accent-soft);
    border-color: rgba(81, 116, 233, 0.3);
  }

  .nav-toggle-label span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--ink-primary);
    border-radius: 2px;
    transition: all 0.25s ease-in-out;
    transform-origin: center;
  }

  /* 点击展开后的汉堡动画 */
  .nav-toggle:checked ~ .nav-toggle-label {
    background: var(--accent-soft);
    border-color: var(--accent);
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
    background: var(--accent);
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }

  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
    background: var(--accent);
  }

  /* 移动端抽屉下拉菜单 */
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 14px 28px rgba(81, 116, 233, 0.12);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.35s ease, opacity 0.25s ease;
  }

  .nav-toggle:checked ~ .main-nav {
    max-height: 480px;
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav ul {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 16px;
    gap: 6px;
  }

  .main-nav a {
    display: block;
    padding: 11px 16px;
    font-size: 14.5px;
    font-weight: 600;
    color: var(--ink-secondary);
    border-radius: 8px;
    text-align: left;
    transition: var(--transition-smooth);
  }

  .main-nav a:hover {
    color: var(--accent);
    background: var(--accent-softer);
  }

  .main-nav a.active {
    color: #ffffff;
    background: var(--accent);
    box-shadow: 0 4px 12px rgba(81, 116, 233, 0.25);
  }

  /* Banner 区域适配 */
  .hero {
    padding: 48px 16px 40px;
  }
  .hero-title {
    font-size: 23px;
    line-height: 1.35;
    letter-spacing: 0.5px;
  }
  .hero-tags {
    gap: 6px;
    margin-bottom: 18px;
  }
  .hero-tags span {
    font-size: 12px;
    padding: 4px 10px;
  }
  .hero-sub {
    font-size: 13.5px;
    line-height: 1.75;
  }
  .page-banner {
    padding: 34px 16px 28px;
  }
  .page-banner h1 {
    font-size: 22px;
    letter-spacing: 0.8px;
  }
  .page-banner .banner-sub {
    font-size: 11px;
    letter-spacing: 2.5px;
  }

  /* 通用内容与卡片 */
  .section {
    padding: 36px 0;
  }
  .section-head {
    margin-bottom: 24px;
  }
  .section-title {
    font-size: 20px;
  }
  .section-sub {
    font-size: 11px;
    letter-spacing: 2px;
  }
  .lead {
    font-size: 14px;
    line-height: 1.8;
    padding: 16px 16px 16px 14px;
  }

  /* 板块卡片单列布局 */
  .biz-grid, .work-grid, .policy-links, .event-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .biz-card {
    padding: 22px 18px 20px;
  }
  .biz-card h3 {
    font-size: 17px;
  }
  .work-card .info {
    padding: 16px;
  }

  /* 音乐列表移动端排版 */
  .music-item {
    padding: 14px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }
  .music-item .no {
    font-size: 16px;
    min-width: 24px;
  }
  .music-item .txt {
    flex: 1 1 calc(100% - 40px);
  }
  .music-item .ph-tag {
    margin-left: auto;
    font-size: 11px;
    padding: 2px 10px;
  }

  /* 关于我们与联系方式 */
  .about-section {
    margin-bottom: 32px;
  }
  .about-section h2 {
    font-size: 19px;
  }
  .about-section p {
    font-size: 14px;
    line-height: 1.8;
  }
  .policy-link {
    padding: 14px 16px;
  }
  .policy-link .mark {
    width: 38px;
    height: 38px;
    font-size: 15px;
    border-radius: 8px;
  }
  .contact-list {
    padding: 18px 16px;
    gap: 12px;
  }
  .contact-list li {
    font-size: 13.5px;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
  .contact-list b {
    min-width: unset;
    font-size: 12.5px;
    color: var(--accent);
  }

  /* 合规制度文档页 */
  .policy-doc {
    margin: 16px 12px 36px;
    padding: 24px 16px;
    border-radius: var(--radius-sm);
  }
  .policy-doc h1 {
    font-size: 20px;
  }
  .policy-doc .toc {
    padding: 14px 16px;
  }
  .policy-doc .toc ul {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .policy-doc h2 {
    font-size: 16px;
    margin: 22px 0 10px;
  }
  .policy-doc p, .policy-doc li {
    font-size: 13.5px;
    line-height: 1.8;
  }

  /* 页脚 */
  .site-footer {
    padding: 18px 14px;
    font-size: 12px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  /* 返回顶部按钮 */
  .back-top {
    bottom: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .logo-mark {
    width: 38px;
    height: 38px;
  }
  .logo-name {
    font-size: 16px;
  }
  .logo-sub {
    font-size: 8.5px;
    letter-spacing: 3.2px;
  }
  .hero-title {
    font-size: 20px;
  }
}