/* ========================================
   越剧名家毕春芳专题样式表 v2.0
   差异化设计版本
   配色：紫色系
   ======================================== */

/* ===== CSS变量定义 ===== */
:root {
  /* 主色调（越剧专属：紫色系） */
  --primary: #6B4C9A;
  --primary-light: #8B6BB8;
  --primary-lighter: #A888D0;
  --primary-dark: #4A356B;
  
  /* 粉色强调 */
  --accent: #E8A0BF;
  --accent-light: #F4B8D0;
  --accent-dark: #C07A9E;
  
  /* 深色背景 */
  --dark-bg: #150A2A;
  --dark-bg-light: #1F103A;
  --dark-bg-lighter: #2A1550;
  
  /* 浅色背景 */
  --light-bg: #F8F5FC;
  --light-bg-light: #FCFAFF;
  --light-bg-lighter: #FFFFFF;
  
  /* 文字颜色 */
  --text-on-dark: #F8F5FC;
  --text-on-dark-secondary: rgba(248, 245, 252, 0.85);
  --text-on-dark-muted: rgba(248, 245, 252, 0.6);
  --text-primary: #2A1550;
  --text-secondary: #5A4A7A;
  
  /* 字体 */
  --font-serif: 'Noto Serif SC', 'STSong', serif;
  --font-sans: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  
  /* 尺寸 */
  --max-width: 1200px;
  --section-padding: 100px;
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  
  /* 阴影 */
  --shadow-sm: 0 4px 12px rgba(107, 76, 154, 0.08);
  --shadow-md: 0 8px 24px rgba(107, 76, 154, 0.12);
  --shadow-lg: 0 16px 48px rgba(107, 76, 154, 0.16);
}

/* ===== 全局重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--light-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(21, 10, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(107, 76, 154, 0.3);
  transition: all 0.3s ease;
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-on-dark);
  text-decoration: none;
  letter-spacing: 3px;
  position: relative;
}

.nav-brand::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light) 0%, var(--accent) 100%);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-on-dark-secondary);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-light);
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent-light);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-on-dark);
  transition: all 0.3s ease;
}

/* ===== Hero首屏区域 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: url('images/hero-bg.jpg') center/cover no-repeat;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: 
    linear-gradient(180deg, 
      rgba(21, 10, 42, 0.75) 0%, 
      rgba(21, 10, 42, 0.55) 50%, 
      rgba(21, 10, 42, 0.85) 100%
    );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  padding: 120px 24px 80px;
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  padding: 10px 24px;
  background: rgba(232, 160, 191, 0.15);
  border: 1px solid rgba(232, 160, 191, 0.4);
  border-radius: 30px;
  color: var(--accent-light);
  font-size: 14px;
  letter-spacing: 4px;
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 96px;
  font-weight: 900;
  color: var(--text-on-dark);
  letter-spacing: 32px;
  margin-bottom: 24px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
  line-height: 1;
}

.hero-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-divider span {
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.hero-divider i {
  color: var(--accent);
  font-size: 14px;
  font-style: normal;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--accent-light);
  letter-spacing: 6px;
  margin-bottom: 56px;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 48px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 28px;
  background: rgba(248, 245, 252, 0.08);
  border: 1px solid rgba(248, 245, 252, 0.15);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.hero-meta-item:hover {
  background: rgba(248, 245, 252, 0.12);
  border-color: rgba(107, 76, 154, 0.4);
}

.hero-meta-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--light-bg-lighter);
  box-shadow: 0 4px 16px rgba(107, 76, 154, 0.3);
}

.hero-meta-text {
  text-align: left;
}

.hero-meta-label {
  font-size: 12px;
  color: var(--text-on-dark-muted);
  letter-spacing: 2px;
  margin-bottom: 4px;
}

.hero-meta-value {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-on-dark);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  text-decoration: none;
  color: var(--text-on-dark-muted);
  font-size: 14px;
  letter-spacing: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: color 0.3s ease;
}

.hero-scroll:hover {
  color: var(--accent-light);
}

.hero-scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) rotate(45deg);
  }
  40% {
    transform: translateY(8px) rotate(45deg);
  }
  60% {
    transform: translateY(4px) rotate(45deg);
  }
}

/* ===== 通用区块样式 ===== */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

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

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

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-eyebrow {
  font-size: 13px;
  color: var(--primary);
  letter-spacing: 8px;
  margin-bottom: 16px;
  text-transform: uppercase;
  font-weight: 500;
}

.section-dark .section-eyebrow {
  color: var(--accent-light);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 8px;
  margin-bottom: 24px;
  position: relative;
  display: inline-block;
  padding-bottom: 28px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 2px;
}

.section-dark .section-title {
  color: var(--text-on-dark);
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto;
}

.section-dark .section-desc {
  color: var(--text-on-dark-secondary);
}

/* ===== 人物概览 - 差异化布局 ===== */
.overview-diff {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.overview-image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform 0.4s ease;
}

.overview-image-card:hover {
  transform: translateY(-8px);
}

.portrait-img {
  width: 100%;
  display: block;
}

.image-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 24px;
  background: linear-gradient(transparent, rgba(21, 10, 42, 0.9));
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-on-dark);
  font-size: 14px;
  letter-spacing: 2px;
}

.caption-line {
  width: 3px;
  height: 20px;
  background: var(--accent);
}

.overview-info-card {
  padding: 40px;
  background: var(--light-bg-lighter);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(107, 76, 154, 0.1);
}

.overview-info-card h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: 4px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--primary);
}

.intro-text {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 20px;
  text-align: justify;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 32px 0;
  padding: 24px 0;
  border-top: 1px solid rgba(107, 76, 154, 0.1);
  border-bottom: 1px solid rgba(107, 76, 154, 0.1);
}

.feature-item {
  text-align: center;
}

.feature-num {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}

.feature-label {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 2px;
}

.overview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.overview-tag {
  padding: 8px 18px;
  background: rgba(107, 76, 154, 0.08);
  border: 1px solid rgba(107, 76, 154, 0.25);
  border-radius: 20px;
  font-size: 13px;
  color: var(--primary);
  transition: all 0.3s ease;
}

.overview-tag:hover {
  background: var(--primary);
  color: var(--light-bg-lighter);
  border-color: var(--primary);
}

/* ===== 生平历程 - 横向时间轴 ===== */
.timeline-horizontal {
  display: flex;
  gap: 0;
  position: relative;
  padding: 40px 0;
}

.timeline-horizontal::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
}

.timeline-node {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 12px;
}

.node-dot {
  width: 20px;
  height: 20px;
  background: var(--primary);
  border: 3px solid var(--accent-light);
  border-radius: 50%;
  margin: 0 auto 24px;
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.timeline-node:hover .node-dot {
  transform: scale(1.3);
  box-shadow: 0 0 0 8px rgba(107, 76, 154, 0.2);
}

.node-year {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 900;
  color: var(--accent-light);
  margin-bottom: 12px;
}

.node-content {
  padding: 20px;
  background: rgba(107, 76, 154, 0.05);
  border: 1px solid rgba(107, 76, 154, 0.15);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.node-content:hover {
  background: rgba(107, 76, 154, 0.1);
  border-color: var(--primary-light);
  transform: translateY(-4px);
}

.node-content h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--text-on-dark);
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.node-content p {
  font-size: 14px;
  color: var(--text-on-dark-secondary);
  line-height: 1.8;
}

/* ===== 代表剧目 - 左右交替布局 ===== */
.repertoire-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.work-item {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 40px;
  background: var(--light-bg-lighter);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.work-item::before {
  content: '';
  position: absolute;
  top: 0;
  width: 6px;
  height: 100%;
  transition: all 0.4s ease;
}

.work-left::before {
  left: 0;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
}

.work-right::before {
  right: 0;
  background: linear-gradient(180deg, var(--primary-light) 0%, var(--primary) 100%);
}

.work-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.work-number {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 900;
  color: var(--primary);
  opacity: 0.2;
  line-height: 1;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.work-item:hover .work-number {
  opacity: 0.4;
  transform: scale(1.1);
}

.work-info {
  flex: 1;
}

.work-info h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 3px;
}

.work-info p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 20px;
  text-align: justify;
}

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

.work-tags span {
  padding: 6px 14px;
  background: rgba(107, 76, 154, 0.08);
  border-radius: 14px;
  font-size: 12px;
  color: var(--primary);
}

/* ===== 流派传承 - 差异化布局 ===== */
.legacy-diff {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.legacy-quote {
  text-align: center;
  padding: 48px;
  background: rgba(232, 160, 191, 0.05);
  border: 1px solid rgba(232, 160, 191, 0.2);
  border-radius: var(--radius-lg);
  position: relative;
}

.quote-mark {
  font-family: var(--font-serif);
  font-size: 80px;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.quote-text {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text-on-dark);
  line-height: 2;
  letter-spacing: 2px;
  margin-bottom: 20px;
  font-style: italic;
}

.quote-author {
  font-size: 15px;
  color: var(--accent-light);
  letter-spacing: 3px;
}

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

.pillar-item {
  padding: 32px;
  background: rgba(107, 76, 154, 0.05);
  border: 1px solid rgba(107, 76, 154, 0.15);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all 0.3s ease;
}

.pillar-item:hover {
  background: rgba(107, 76, 154, 0.1);
  border-color: var(--primary-light);
  transform: translateY(-4px);
}

.pillar-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 900;
  color: var(--light-bg-lighter);
  box-shadow: 0 8px 24px rgba(107, 76, 154, 0.3);
}

.pillar-item h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--accent-light);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.pillar-item p {
  font-size: 14px;
  color: var(--text-on-dark-secondary);
  line-height: 1.9;
  text-align: justify;
}

/* ===== 艺术成就 - 差异化卡片 ===== */
.achieve-diff {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.achieve-card {
  padding: 40px 28px;
  background: var(--light-bg-lighter);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.achieve-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
}

.achieve-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}

.achieve-deco {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: rgba(107, 76, 154, 0.05);
  border-radius: 50%;
}

.achieve-icon-box {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 900;
  color: var(--light-bg-lighter);
  box-shadow: 0 8px 24px rgba(107, 76, 154, 0.3);
}

.achieve-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.achieve-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.9;
}

/* ===== 文化影响 ===== */
.influence-diff {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 960px;
  margin: 0 auto;
}

.influence-item {
  padding: 40px;
  background: rgba(107, 76, 154, 0.05);
  border: 1px solid rgba(107, 76, 154, 0.15);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.influence-item:hover {
  background: rgba(107, 76, 154, 0.1);
  border-color: var(--primary-light);
}

.influence-item h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--accent-light);
  margin-bottom: 20px;
  letter-spacing: 3px;
  position: relative;
  padding-bottom: 16px;
}

.influence-item h3::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 2px;
  background: var(--primary-light);
}

.influence-item p {
  font-size: 15px;
  color: var(--text-on-dark-secondary);
  line-height: 2;
  text-align: justify;
}

/* ===== 资源下载 ===== */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.download-card {
  background: var(--light-bg-lighter);
  border: 1px solid rgba(107, 76, 154, 0.2);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  transition: all 0.4s ease;
  position: relative;
}

.download-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.download-card.featured {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-color: var(--primary-light);
  transform: scale(1.05);
}

.download-card.featured:hover {
  transform: scale(1.05) translateY(-8px);
  box-shadow: 0 20px 56px rgba(107, 76, 154, 0.3);
}

.featured-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 6px 16px;
  background: var(--accent);
  color: var(--light-bg-lighter);
  font-size: 12px;
  font-weight: 700;
  border-radius: 12px;
  letter-spacing: 1px;
}

.download-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.download-card.featured h3 {
  color: var(--light-bg-lighter);
}

.price {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 16px;
  line-height: 1;
}

.download-card.featured .price {
  color: var(--light-bg-lighter);
}

.download-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.download-card.featured .download-desc {
  color: rgba(255, 255, 255, 0.9);
}

.download-btn {
  display: inline-block;
  padding: 14px 40px;
  background: var(--primary);
  color: var(--light-bg-lighter);
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 4px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.download-btn:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(107, 76, 154, 0.3);
}

.download-card.featured .download-btn {
  background: var(--light-bg-lighter);
  color: var(--primary);
}

.download-card.featured .download-btn:hover {
  background: rgba(255, 255, 255, 0.9);
}

/* ===== 页脚 ===== */
.footer {
  background: var(--dark-bg);
  padding: 60px 0 30px;
  color: var(--text-on-dark-secondary);
  border-top: 3px solid var(--primary);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(107, 76, 154, 0.15);
}

.footer-section h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--text-on-dark);
  margin-bottom: 16px;
  letter-spacing: 2px;
  position: relative;
  padding-bottom: 12px;
}

.footer-section h4::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 40px; height: 2px;
  background: var(--primary);
}

.footer-section p {
  font-size: 14px;
  color: var(--text-on-dark-muted);
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-section a {
  display: block;
  font-size: 14px;
  color: var(--text-on-dark-muted);
  line-height: 2;
  transition: all 0.3s ease;
  text-decoration: none;
}

.footer-section a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-on-dark-muted);
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-bottom a {
  color: var(--text-on-dark-muted);
  margin: 0 12px;
  transition: all 0.3s ease;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--accent-light);
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}

/* ===== 选中文本样式 ===== */
::selection {
  background: var(--primary);
  color: var(--light-bg-lighter);
}

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  .navbar-inner {
    padding: 0 16px;
    height: 60px;
  }
  .nav-brand {
    font-size: 18px;
    letter-spacing: 2px;
  }
  .nav-links {
    position: fixed;
    top: 60px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 60px);
    background: var(--dark-bg);
    flex-direction: column;
    padding: 32px 24px;
    gap: 20px;
    transition: right 0.3s ease;
    overflow-y: auto;
  }
  .nav-links.active {
    right: 0;
  }
  .nav-links a {
    font-size: 16px;
    padding: 8px 0;
  }
  .nav-toggle {
    display: flex;
  }
  .hero-content {
    padding: 100px 16px 60px;
  }
  .hero-badge {
    padding: 8px 20px;
    font-size: 12px;
    letter-spacing: 3px;
    margin-bottom: 24px;
  }
  .hero-title {
    font-size: 56px;
    letter-spacing: 16px;
    margin-bottom: 20px;
  }
  .hero-divider span {
    width: 50px;
  }
  .hero-subtitle {
    font-size: 16px;
    letter-spacing: 4px;
    margin-bottom: 40px;
  }
  .hero-meta {
    gap: 12px;
    margin-top: 32px;
    flex-direction: column;
    align-items: center;
  }
  .hero-meta-item {
    padding: 14px 20px;
    width: 100%;
    max-width: 260px;
  }
  .hero-meta-icon {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
  .hero-meta-label {
    font-size: 11px;
    margin-bottom: 2px;
  }
  .hero-meta-value {
    font-size: 15px;
  }
  .hero-scroll {
    bottom: 24px;
    font-size: 12px;
  }
  .section {
    padding: 60px 0;
  }
  .section-inner {
    padding: 0 16px;
  }
  .section-header {
    margin-bottom: 48px;
  }
  .section-eyebrow {
    font-size: 12px;
    letter-spacing: 6px;
    margin-bottom: 12px;
  }
  .section-title {
    font-size: 30px;
    letter-spacing: 4px;
    margin-bottom: 16px;
    padding-bottom: 18px;
  }
  .section-title::after {
    width: 60px;
    height: 2px;
  }
  .section-desc {
    font-size: 15px;
    line-height: 1.8;
  }
  .overview-diff {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .overview-info-card {
    padding: 24px;
  }
  .overview-info-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
    padding-bottom: 16px;
  }
  .intro-text {
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 16px;
  }
  .feature-grid {
    gap: 12px;
    margin: 20px 0;
    padding: 16px 0;
  }
  .feature-num {
    font-size: 28px;
    margin-bottom: 4px;
  }
  .feature-label {
    font-size: 12px;
    letter-spacing: 1px;
  }
  .overview-tags {
    gap: 8px;
    margin-top: 16px;
  }
  .overview-tag {
    padding: 6px 14px;
    font-size: 12px;
  }
  .timeline-horizontal {
    flex-direction: column;
    gap: 32px;
    padding: 20px 0;
  }
  .timeline-horizontal::before {
    top: 0;
    bottom: 0;
    left: 30px;
    right: auto;
    width: 2px;
    height: auto;
  }
  .timeline-node {
    flex: none;
    text-align: left;
    padding: 0 0 0 60px;
  }
  .node-dot {
    position: absolute;
    left: 20px;
    top: 6px;
    margin: 0;
  }
  .node-year {
    font-size: 20px;
    margin-bottom: 8px;
  }
  .node-content {
    padding: 16px;
  }
  .node-content h4 {
    font-size: 16px;
    margin-bottom: 8px;
  }
  .node-content p {
    font-size: 13px;
    line-height: 1.7;
  }
  .repertoire-list {
    gap: 24px;
  }
  .work-item {
    padding: 24px;
    gap: 20px;
  }
  .work-number {
    font-size: 40px;
  }
  .work-info h3 {
    font-size: 20px;
    margin-bottom: 12px;
  }
  .work-info p {
    font-size: 14px;
    line-height: 1.9;
    margin-bottom: 16px;
  }
  .work-tags {
    gap: 6px;
  }
  .work-tags span {
    padding: 4px 10px;
    font-size: 11px;
  }
  .legacy-diff {
    gap: 24px;
  }
  .legacy-quote {
    padding: 32px 24px;
  }
  .quote-mark {
    font-size: 56px;
    margin-bottom: 8px;
  }
  .quote-text {
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 12px;
  }
  .quote-author {
    font-size: 14px;
  }
  .legacy-pillars {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .pillar-item {
    padding: 24px;
  }
  .pillar-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
    margin-bottom: 16px;
  }
  .pillar-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
  }
  .pillar-item p {
    font-size: 14px;
    line-height: 1.8;
  }
  .achieve-diff {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .achieve-card {
    padding: 32px 24px;
  }
  .achieve-icon-box {
    width: 60px;
    height: 60px;
    font-size: 24px;
    margin-bottom: 16px;
  }
  .achieve-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
  }
  .achieve-card p {
    font-size: 14px;
    line-height: 1.8;
  }
  .influence-diff {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .influence-item {
    padding: 24px;
  }
  .influence-item h3 {
    font-size: 20px;
    margin-bottom: 16px;
    padding-bottom: 12px;
  }
  .influence-item p {
    font-size: 14px;
    line-height: 1.9;
  }
  .download-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .download-card {
    padding: 32px 24px;
  }
  .download-card.featured {
    transform: none;
  }
  .download-card.featured:hover {
    transform: translateY(-4px);
  }
  .featured-badge {
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    font-size: 11px;
  }
  .download-card h3 {
    font-size: 18px;
    margin-bottom: 16px;
  }
  .price {
    font-size: 40px;
    margin-bottom: 12px;
  }
  .download-desc {
    font-size: 13px;
    margin-bottom: 20px;
  }
  .download-btn {
    padding: 12px 32px;
    font-size: 14px;
  }
  .footer {
    padding: 40px 0 20px;
  }
  .footer-content {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
    padding-bottom: 24px;
  }
  .footer-section h4 {
    font-size: 16px;
    margin-bottom: 12px;
    padding-bottom: 8px;
  }
  .footer-section p, .footer-section a {
    font-size: 13px;
  }
  .footer-bottom p {
    font-size: 12px;
  }
  .footer-bottom a {
    display: inline-block;
    margin: 4px 8px;
  }
}

/* ===== 平板适配 ===== */
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-links {
    gap: 20px;
  }
  .hero-title {
    font-size: 72px;
    letter-spacing: 20px;
  }
  .section {
    padding: 80px 0;
  }
  .overview-diff {
    gap: 32px;
  }
  .overview-info-card {
    padding: 32px;
  }
  .timeline-horizontal {
    flex-wrap: wrap;
  }
  .timeline-node {
    flex: 0 0 50%;
    margin-bottom: 32px;
  }
  .timeline-horizontal::before {
    display: none;
  }
  .achieve-diff {
    grid-template-columns: repeat(2, 1fr);
  }
  .legacy-pillars {
    grid-template-columns: 1fr;
  }
  .download-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

/* ===== 大屏适配 ===== */
@media (min-width: 1400px) {
  .section-inner {
    max-width: 1320px;
  }
  .hero-title {
    font-size: 112px;
    letter-spacing: 40px;
  }
  .section-title {
    font-size: 48px;
  }
  .achieve-diff {
    grid-template-columns: repeat(4, 1fr);
  }
}