/* =============================================
   成都理道商贸有限公司 - 理学之道主题样式
   设计理念：儒商文化，水墨画风，理学思想
   ============================================= */

/* ========== 变量定义 ========== */
:root {
  /* 主色调 - 墨黑、朱红、鎏金、宣纸白 */
  --ink-black: #1A1A1A;
  --ink-gray: #4A4036;
  --paper-white: #FAF7F0;
  --vermilion-red: #C62828;
  --gold-seal: #FFB300;
  
  /* 辅助色 */
  --tea-brown: #7B4A22;
  --bamboo-green: #3F704D;
  --jade-green: #1E9C9C;
  --mist-gray: #E5DDD0;
  --water-blue: #B7C7D6;
  
  /* 字体 */
  --font-kaishu: "楷体", "Kaiti", serif;
  --font-songti: "宋体", "SimSun", serif;
  --font-main: "Microsoft YaHei", "微软雅黑", sans-serif;
  
  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  
  /* 动画 */
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-ink: all 0.8s ease-in-out;
}

/* ========== 全局样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--paper-white);
  color: var(--ink-black);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* 宣纸纹理背景 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(26, 26, 26, 0.03) 2px,
      rgba(26, 26, 26, 0.03) 4px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(26, 26, 26, 0.03) 2px,
      rgba(26, 26, 26, 0.03) 4px
    );
  pointer-events: none;
  z-index: 1;
}

/* ========== 导航栏样式 ========== */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(250, 247, 240, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  z-index: 1000;
  transition: var(--transition-smooth);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(26, 26, 26, 0.06);
}

.navbar-container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  font-size: 28px;
  font-family: var(--font-kaishu);
  color: var(--ink-black);
  text-decoration: none;
  font-weight: bold;
  letter-spacing: 4px;
  position: relative;
  white-space: nowrap;
  flex-shrink: 0;
}

/* 印章效果 */
.navbar-logo::after {
  content: '理道';
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%) rotate(-15deg);
  width: 36px;
  height: 36px;
  border: 2px solid var(--vermilion-red);
  color: var(--vermilion-red);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  opacity: 0.8;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.navbar-menu.active {
  display: flex;
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 28px;
  color: var(--ink-black);
  cursor: pointer;
  margin-left: var(--spacing-md);
}

.navbar-link {
  color: var(--ink-black);
  text-decoration: none;
  font-size: 16px;
  padding: var(--spacing-xs) var(--spacing-sm);
  position: relative;
  transition: var(--transition-smooth);
  font-family: var(--font-songti);
}

/* 毛笔下划线效果 */
.navbar-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--vermilion-red), 
    transparent
  );
  transition: transform 0.4s ease;
}

.navbar-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.navbar-link.is-active {
  color: var(--vermilion-red);
}

/* ========== 理道开篇 Section ========== */
.lidao-preface {
  margin-top: 80px;
  padding: var(--spacing-xxl) 0;
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at center, 
    rgba(255, 248, 220, 0.5), 
    var(--paper-white)
  );
}

/* 卷轴容器 */
.scroll-container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  background: var(--paper-white);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border-radius: 10px;
  overflow: hidden;
}

/* 卷轴边框装饰 */
.scroll-container::before,
.scroll-container::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 60px;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 10"><path d="M0,5 Q25,0 50,5 T100,5" stroke="%232F4F4F" fill="none" stroke-width="0.5"/></svg>') repeat-x;
  opacity: 0.3;
}

.scroll-container::before {
  top: 0;
}

.scroll-container::after {
  bottom: 0;
  transform: rotate(180deg);
}

.scroll-content {
  padding: var(--spacing-xxl);
  text-align: center;
  position: relative;
  z-index: 2;
}

/* 书法标题 */
.calligraphy-title {
  font-family: var(--font-kaishu);
  font-size: 64px;
  color: var(--ink-black);
  margin-bottom: var(--spacing-lg);
  position: relative;
  display: inline-block;
  animation: brushWrite 3s ease-out;
}

@keyframes brushWrite {
  from {
    opacity: 0;
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
  }
  to {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

.subtitle {
  font-family: var(--font-songti);
  font-size: 24px;
  color: var(--ink-black);
  opacity: 0.8;
  margin-bottom: var(--spacing-md);
  letter-spacing: 3px;
}

.philosophy-text {
  font-family: var(--font-songti);
  font-size: 18px;
  line-height: 2;
  color: var(--ink-black);
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  opacity: 0.9;
}

/* ========== 云上书房 Section ========== */
.cloud-study {
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(120deg, rgba(250, 247, 240, 0.95), rgba(255, 255, 255, 0.8));
  position: relative;
}

.cloud-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.cloud-intro {
  background: rgba(255, 255, 255, 0.9);
  padding: var(--spacing-xl);
  border-radius: 16px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.08);
}

.cloud-feature-list {
  list-style: none;
  margin: var(--spacing-lg) 0;
  padding: 0;
}

.cloud-feature-list li {
  padding: var(--spacing-sm) 0;
  font-family: var(--font-songti);
  border-bottom: 1px dashed rgba(26, 26, 26, 0.1);
}

.cloud-stats {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  font-family: var(--font-songti);
  flex-wrap: wrap;
}

.cloud-stats .stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--vermilion-red);
  display: block;
}

.cloud-stats .stat-label {
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.cloud-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
}

.cloud-panel {
  background: rgba(255, 255, 255, 0.85);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
}

.panel-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  filter: saturate(0.9);
}

.panel-body {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.panel-tag {
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--ink-gray);
}

/* 水墨画装饰 */
.ink-decoration {
  position: absolute;
  width: 200px;
  height: 200px;
  opacity: 0.1;
  pointer-events: none;
}

.ink-decoration.top-left {
  top: 20px;
  left: 20px;
  background: radial-gradient(circle, var(--ink-black) 10%, transparent 70%);
  filter: blur(20px);
}

.ink-decoration.bottom-right {
  bottom: 20px;
  right: 20px;
  background: radial-gradient(circle, var(--ink-black) 10%, transparent 70%);
  filter: blur(20px);
  transform: rotate(180deg);
}

/* ========== 商道长廊 Section ========== */
.trade-corridor {
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(180deg, 
    var(--paper-white) 0%, 
    rgba(176, 224, 230, 0.1) 50%, 
    var(--paper-white) 100%
  );
  position: relative;
  overflow: hidden;
}

/* 园林布局容器 */
.garden-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
}

.section-title {
  text-align: center;
  font-family: var(--font-kaishu);
  font-size: 48px;
  color: var(--ink-black);
  margin-bottom: var(--spacing-xl);
  position: relative;
  display: inline-block;
  width: 100%;
}

/* 亭台楼阁导航 */
.pavilion-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.pavilion-card {
  background: var(--paper-white);
  border: 2px solid var(--mist-gray);
  border-radius: 10px 10px 0 0;
  overflow: hidden;
  position: relative;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.pavilion-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: linear-gradient(90deg, 
    var(--vermilion-red) 0%, 
    var(--gold-seal) 50%, 
    var(--vermilion-red) 100%
  );
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

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

.pavilion-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pavilion-roof {
  height: 60px;
  background: var(--tea-brown);
  position: relative;
  clip-path: polygon(10% 100%, 50% 0%, 90% 100%);
}

.pavilion-content {
  padding: var(--spacing-lg);
  text-align: center;
}

.pavilion-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--jade-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--paper-white);
}

.pavilion-title {
  font-family: var(--font-kaishu);
  font-size: 24px;
  color: var(--ink-black);
  margin-bottom: var(--spacing-sm);
}

.pavilion-desc {
  font-size: 16px;
  color: var(--ink-black);
  opacity: 0.8;
  line-height: 1.8;
}

/* 假山石景装饰 */
.rock-decoration {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 150px;
  height: 100px;
  background: linear-gradient(135deg, 
    var(--ink-black) 0%, 
    transparent 50%
  );
  clip-path: polygon(20% 100%, 35% 40%, 50% 60%, 65% 30%, 80% 100%);
  opacity: 0.1;
}

/* 锦鲤游动背景 */
.koi-pond {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(180deg, 
    transparent 0%, 
    rgba(176, 224, 230, 0.2) 100%
  );
  overflow: hidden;
  pointer-events: none;
}

.koi {
  position: absolute;
  width: 60px;
  height: 20px;
  background: linear-gradient(90deg, 
    var(--vermilion-red) 0%, 
    var(--gold-seal) 50%, 
    var(--paper-white) 100%
  );
  border-radius: 50% 10% 50% 10%;
  opacity: 0.6;
  animation: swim 20s infinite linear;
}

@keyframes swim {
  from {
    transform: translateX(-100px) rotate(0deg);
  }
  to {
    transform: translateX(calc(100vw + 100px)) rotate(360deg);
  }
}

/* ========== 诚信印记 Section ========== */
.trust-seal {
  padding: var(--spacing-xxl) 0;
  background: var(--paper-white);
  position: relative;
}

.seal-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  text-align: center;
}

/* 印章展示网格 */
.seal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.seal-stamp {
  position: relative;
  padding: var(--spacing-lg);
  background: var(--paper-white);
  border: 3px solid var(--vermilion-red);
  border-radius: 5px;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.seal-stamp::before {
  content: '';
  position: absolute;
  inset: 5px;
  border: 1px solid var(--vermilion-red);
  border-radius: 3px;
  opacity: 0.5;
}

.seal-stamp:hover {
  transform: rotate(-5deg) scale(1.05);
  box-shadow: 0 10px 30px rgba(220, 20, 60, 0.2);
}

.seal-text {
  font-family: var(--font-kaishu);
  font-size: 20px;
  color: var(--vermilion-red);
  font-weight: bold;
  letter-spacing: 2px;
}

/* 信用等级 */
.credit-rating {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, 
    var(--gold-seal) 0%, 
    rgba(218, 165, 32, 0.1) 100%
  );
  border-radius: 10px;
}

.rating-stars {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 36px;
  color: var(--gold-seal);
  margin-bottom: var(--spacing-md);
}

/* 合作伙伴卷轴 */
.partner-marquee,
.partner-scroll {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 248, 220, 0.5), 
    transparent
  );
  overflow: hidden;
}

.partner-container {
  max-width: 1200px;
  margin: 0 auto;
}

.partner-title {
  font-family: var(--font-kaishu);
  font-size: 24px;
  letter-spacing: 0.5em;
  color: var(--ink-black);
  margin-bottom: var(--spacing-md);
}

.partner-track,
.partner-list {
  display: flex;
  gap: var(--spacing-xl);
  animation: scrollPartners 30s linear infinite;
  white-space: nowrap;
}

@keyframes scrollPartners {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.partner-item {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--paper-white);
  border: 1px solid var(--mist-gray);
  border-radius: 5px;
  font-family: var(--font-songti);
  color: var(--ink-black);
}

/* ========== 产品展示样式 ========== */
.product-section {
  padding: var(--spacing-xxl) 0;
  background: var(--paper-white);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.product-card {
  background: var(--paper-white);
  border: 1px solid var(--mist-gray);
  border-radius: 10px;
  overflow: hidden;
  transition: var(--transition-smooth);
  position: relative;
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.product-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.product-card:hover .product-image {
  transform: scale(1.1);
}

.product-info {
  padding: var(--spacing-md);
}

.product-title {
  font-family: var(--font-kaishu);
  font-size: 20px;
  color: var(--ink-black);
  margin-bottom: var(--spacing-sm);
}

.product-desc {
  font-size: 14px;
  color: var(--ink-black);
  opacity: 0.8;
  line-height: 1.6;
}

.product-price {
  margin-top: var(--spacing-sm);
  font-size: 18px;
  color: var(--vermilion-red);
  font-weight: bold;
}

/* ========== 通用内容模块 ========== */
.page-hero {
  margin-top: 80px;
  padding: 120px 0 80px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(250, 247, 240, 0.85));
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/8LwHWimPAc2w.png') no-repeat center/cover;
  opacity: 0.08;
  mix-blend-mode: multiply;
}

.page-hero .hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: left;
}

.hero-eyebrow {
  font-size: 16px;
  letter-spacing: 0.3em;
  color: var(--vermilion-red);
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-kaishu);
  font-size: clamp(40px, 6vw, 64px);
  color: var(--ink-black);
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--ink-gray);
  line-height: 1.8;
  max-width: 720px;
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.section-block {
  padding: 80px 0;
}

.page-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-heading {
  font-family: var(--font-kaishu);
  font-size: 36px;
  color: var(--ink-black);
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--ink-gray);
  margin-bottom: 40px;
  line-height: 1.8;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.info-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid rgba(26, 26, 26, 0.08);
  box-shadow: 0 20px 35px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

.info-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--ink-black);
}

.info-card p {
  color: var(--ink-gray);
  line-height: 1.8;
}

.info-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0), rgba(198, 40, 40, 0.08));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.info-card:hover::after {
  opacity: 1;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.stat-card {
  background: var(--ink-black);
  color: var(--paper-white);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
}

.stat-value {
  font-size: 40px;
  font-family: var(--font-kaishu);
  margin-bottom: 8px;
}

.stat-label {
  letter-spacing: 0.3em;
  font-size: 14px;
}

.timeline {
  position: relative;
  padding-left: 32px;
  border-left: 2px solid rgba(26, 26, 26, 0.1);
}

.timeline-item {
  margin-bottom: 32px;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -41px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid var(--vermilion-red);
  background: var(--paper-white);
}

.timeline-year {
  font-size: 18px;
  color: var(--vermilion-red);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}

.timeline-content {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid rgba(26, 26, 26, 0.08);
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 16px;
  border-radius: 999px;
  background: rgba(198, 40, 40, 0.1);
  color: var(--vermilion-red);
  font-size: 14px;
  margin-right: 8px;
}

.tag-pill.is-active {
  background: var(--vermilion-red);
  color: #fff;
}

.case-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 18px;
  padding: 32px;
  border: 1px solid rgba(26, 26, 26, 0.08);
  box-shadow: 0 25px 45px rgba(0, 0, 0, 0.06);
}

.case-card h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

.case-card p {
  color: var(--ink-gray);
  line-height: 1.8;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.news-card {
  padding: 28px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(26, 26, 26, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 25px 55px rgba(0, 0, 0, 0.08);
}

.news-meta {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--ink-gray);
  margin-bottom: 12px;
}

.article-body {
  line-height: 2;
  color: var(--ink-gray);
}

.article-body h3 {
  margin-top: 32px;
  margin-bottom: 12px;
  font-size: 22px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.contact-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid rgba(26, 26, 26, 0.08);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--ink-black);
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid rgba(26, 26, 26, 0.15);
  background: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  font-family: var(--font-main);
}

.form-control:focus {
  border-color: var(--vermilion-red);
  outline: none;
  box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.15);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  align-items: center;
}

.partner-item {
  border: 1px solid rgba(26, 26, 26, 0.08);
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  font-family: var(--font-songti);
  letter-spacing: 0.2em;
}

.tea-immersion {
  position: relative;
  margin: 80px auto;
  max-width: 1200px;
  border-radius: 28px;
  overflow: hidden;
  color: var(--paper-white);
  min-height: 420px;
  box-shadow: 0 45px 80px rgba(0, 0, 0, 0.25);
}

.tea-video-layer {
  position: absolute;
  inset: 0;
  background: url('../images/HxnENaByMyK0.jpg') center/cover no-repeat;
  animation: teaFlow 20s ease-in-out infinite alternate;
  filter: saturate(1.1);
}

.tea-video-layer::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.2));
}

.tea-steam {
  position: absolute;
  bottom: 10px;
  width: 120px;
  height: 200px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.35), transparent 60%);
  animation: steamRise 12s infinite ease-in-out;
  filter: blur(30px);
}

.tea-steam:nth-child(1) { left: 20%; animation-delay: 0s; }
.tea-steam:nth-child(2) { left: 45%; animation-delay: 3s; }
.tea-steam:nth-child(3) { left: 70%; animation-delay: 6s; }

.tea-overlay {
  position: relative;
  z-index: 2;
  padding: 80px;
  max-width: 700px;
}

.tea-overlay h2 {
  font-family: var(--font-kaishu);
  font-size: 42px;
  margin-bottom: 16px;
}

.tea-overlay p {
  line-height: 1.9;
  opacity: 0.9;
}

.ink-gallery {
  padding: 80px 0;
  background: linear-gradient(180deg, rgba(250, 247, 240, 0.6), #fff);
}

.gallery-shell {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  align-items: center;
}

.gallery-slides {
  position: relative;
  min-height: 360px;
}

.gallery-slide {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  overflow: hidden;
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
}

.gallery-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-slide.is-active {
  opacity: 1;
  transform: translateX(0);
  position: absolute;
}

.gallery-meta {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.75), transparent);
  color: #fff;
}

.gallery-meta h3 {
  font-size: 22px;
  margin-bottom: 8px;
}

.gallery-dots {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}

.gallery-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(26, 26, 26, 0.2);
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.gallery-dot.is-active {
  background: var(--vermilion-red);
  transform: scale(1.3);
}

.course-preview {
  background: rgba(255, 255, 255, 0.9);
  padding: 80px 0;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.course-card {
  border: 1px solid rgba(26, 26, 26, 0.08);
  border-radius: 20px;
  padding: 28px;
  background: var(--paper-white);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.course-date {
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--ink-gray);
}

.course-card h3 {
  font-size: 22px;
  color: var(--ink-black);
}

.course-card ul {
  list-style: none;
  color: var(--ink-gray);
  line-height: 1.8;
  padding-left: 0;
}

.course-card strong {
  color: var(--vermilion-red);
}

/* ========== 雅集社区 ========== */
.community-section {
  padding: var(--spacing-xxl) 0;
  background: radial-gradient(circle at top, rgba(255, 248, 231, 0.7), rgba(250, 247, 240, 0.2));
}

.community-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--spacing-xl);
  align-items: stretch;
}

.community-intro {
  background: rgba(255, 255, 255, 0.95);
  padding: var(--spacing-xl);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

.community-timeline {
  list-style: none;
  margin: var(--spacing-lg) 0;
  padding: 0;
}

.community-timeline li {
  padding: var(--spacing-sm) 0;
  border-left: 3px solid rgba(199, 62, 29, 0.3);
  padding-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.community-timeline strong {
  display: block;
  font-family: var(--font-songti);
  margin-bottom: 4px;
}

.community-timeline span {
  font-size: 14px;
  color: rgba(26, 26, 26, 0.7);
}

.community-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.community-card {
  padding: var(--spacing-xl);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(28, 28, 28, 0.93), rgba(60, 42, 32, 0.85));
  color: #fff;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.community-card span {
  letter-spacing: 4px;
  font-size: 12px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

@keyframes teaFlow {
  0% { transform: scale(1) translateX(0); }
  100% { transform: scale(1.2) translateX(-20px); }
}

@keyframes steamRise {
  0% { transform: translateY(0) scaleX(1); opacity: 0.4; }
  50% { transform: translateY(-40px) scaleX(0.9); opacity: 0.7; }
  100% { transform: translateY(-80px) scaleX(1.1); opacity: 0; }
}

/* ========== 按钮样式 ========== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-songti);
  font-size: 16px;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 5px;
  transition: var(--transition-smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--vermilion-red);
  color: var(--paper-white);
  border-color: var(--vermilion-red);
}

.btn-primary:hover {
  background: transparent;
  color: var(--vermilion-red);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(220, 20, 60, 0.2);
}

.btn-secondary {
  background: transparent;
  color: var(--ink-black);
  border-color: var(--ink-black);
}

.btn-secondary:hover {
  background: var(--ink-black);
  color: var(--paper-white);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(26, 26, 26, 0.25);
}

/* ========== 页脚样式 ========== */
.footer {
  background: var(--ink-black);
  color: var(--paper-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: linear-gradient(90deg, 
    var(--vermilion-red) 0%, 
    var(--gold-seal) 25%, 
    var(--jade-green) 50%, 
    var(--gold-seal) 75%, 
    var(--vermilion-red) 100%
  );
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-column h4 {
  font-family: var(--font-kaishu);
  font-size: 20px;
  margin-bottom: var(--spacing-md);
  color: var(--gold-seal);
}

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

.footer-column li {
  margin-bottom: var(--spacing-sm);
}

.footer-column a {
  color: var(--paper-white);
  text-decoration: none;
  opacity: 0.8;
  transition: var(--transition-smooth);
}

.footer-column a:hover {
  opacity: 1;
  color: var(--gold-seal);
}

.footer-brand {
  font-family: var(--font-kaishu);
  font-size: 28px;
  letter-spacing: 0.4em;
  margin-bottom: var(--spacing-sm);
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
}

.footer-meta {
  margin-top: var(--spacing-sm);
  font-size: 14px;
  opacity: 0.7;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 248, 220, 0.2);
  opacity: 0.8;
}

/* ========== 响应式设计 ========== */
@media (max-width: 900px) {
  .navbar-container {
    flex-wrap: wrap;
    height: auto;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
  }
  
  .menu-toggle {
    display: block;
    margin-left: auto;
  }
  
  .navbar-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    padding: var(--spacing-md) 0;
    border-top: 1px solid rgba(26, 26, 26, 0.08);
    background: rgba(250, 247, 240, 0.98);
    gap: var(--spacing-sm);
  }
  
  .navbar-menu.active {
    display: flex;
  }
  
  .navbar-link {
    padding: var(--spacing-sm) 0;
  }
  
  .calligraphy-title {
    font-size: 36px;
  }
  
  .pavilion-nav {
    grid-template-columns: 1fr;
  }

  .cloud-grid,
  .community-grid {
    grid-template-columns: 1fr;
  }

  .cloud-intro,
  .community-intro {
    padding: var(--spacing-lg);
  }

  .cloud-panels,
  .community-cards {
    grid-template-columns: 1fr;
  }
  
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .tea-overlay {
    padding: 48px 32px;
  }
  
  .gallery-shell {
    grid-template-columns: 1fr;
  }
  
  .gallery-slides {
    min-height: 300px;
  }
}

/* ========== 加载动画 ========== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--paper-white);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}

.loading-brush {
  width: 100px;
  height: 100px;
  position: relative;
}

.loading-brush::before {
  content: '';
  position: absolute;
  width: 60px;
  height: 4px;
  background: var(--ink-black);
  left: 20px;
  top: 48px;
  animation: brushStroke 2s infinite;
}

@keyframes brushStroke {
  0%, 100% {
    transform: translateX(0) scaleX(0);
    opacity: 0;
  }
  50% {
    transform: translateX(0) scaleX(1);
    opacity: 1;
  }
}