/* ============================================
   铭尚驾校 - 官网样式表
   极简商务 · 科技风
   ============================================
   目录:
   1.  设计变量 (Design Tokens)
   2.  全局重置 & 基础
   3.  布局工具
   4.  导航栏
   5.  首屏横幅 Banner
   6.  关于铭尚
   7.  服务展示
   8.  新闻资讯
   9.  驾校风采
   10. 联系我们
   11. 底部页脚
   12. 动画关键帧
   13. 响应式 (移动端)
   ============================================ */


/* ===== 1. 设计变量 ===== */
:root {
  /* 主色系 */
  --color-primary:        #42A0DE;
  --color-primary-dark:   #2E8BCC;
  --color-primary-darker: #1E6FAA;
  --color-primary-light:  #6BB5E8;
  --color-primary-50:     #F0F8FD;
  --color-primary-100:    #E6F4FB;

  /* 辅助色 */
  --color-secondary:      #C5C5C5;
  --color-secondary-light: #E5E5E5;

  /* 文字 */
  --color-text-dark:      #222222;
  --color-text-light:     #888888;
  --color-text-white:     #FFFFFF;

  /* 背景 */
  --color-bg:             #FFFFFF;
  --color-bg-alt:         #F7F9FB;
  --color-bg-dark:        #1A2B3C;

  /* 边框 */
  --color-border:         #E5E8EC;
  --color-border-light:   #F0F2F5;

  /* 阴影 */
  --shadow-sm:    0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md:    0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg:    0 8px 40px rgba(0, 0, 0, 0.12);
  --shadow-primary: 0 4px 20px rgba(66, 160, 222, 0.3);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* 过渡 */
  --transition:      0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 布局 */
  --container-width: 1200px;
  --section-padding-y: 80px;
  --nav-height: 100px;
}


/* ===== 2. 全局重置 & 基础 ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text-dark);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}


/* ===== 3. 布局工具 ===== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding-y) 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 16px;
}

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

.section-header .divider {
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  margin: 0 auto 16px;
}


/* ===== 4. 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), height var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  height: 90px;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-white);
  transition: color var(--transition);
}

.navbar.scrolled .nav-logo {
  color: var(--color-text-dark);
}

.nav-logo .logo-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-menu a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition);
}

.navbar.scrolled .nav-menu a {
  color: var(--color-text-dark);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition), left var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
  left: 0;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 28px;
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.nav-cta:hover {
  transform: translateY(-2px);
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-white);
  border-radius: 2px;
  transition: all var(--transition);
}

.navbar.scrolled .nav-toggle span {
  background: var(--color-text-dark);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}


/* ===== 5. 首屏横幅 Banner ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(26, 43, 60, 0.62) 0%, rgba(26, 43, 60, 0.45) 35%, rgba(46, 139, 204, 0.30) 70%, rgba(66, 160, 222, 0.32) 100%),
    url('../images/hero-bg.png') center center / cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 55% 60% at 50% 55%, rgba(26, 43, 60, 0.55) 0%, rgba(26, 43, 60, 0.25) 45%, transparent 75%),
    radial-gradient(circle at 20% 30%, rgba(66, 160, 222, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 85% 85%, rgba(26, 43, 60, 0.45) 0%, transparent 55%);
  pointer-events: none;
}

.hero-svg-bg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: auto;
  opacity: 0.15;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 24px;
  opacity: 0;
  animation: fadeInUp 1s ease forwards 0.3s;
}

.hero-content h1 {
  font-size: 2.5rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.45), 0 1px 3px rgba(0, 0, 0, 0.3);
}

.hero-content h1 .highlight {
  display: block;
  font-size: 2rem;
  color: var(--color-primary-light);
  margin-top: 8px;
}

.hero-content .hero-subtitle-en {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 12px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.4);
}

.hero-content .hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 12px;
}

.hero-content .hero-subtitle-en:last-of-type {
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 40px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 500;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-primary);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  transform: translateY(-3px);
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  letter-spacing: 1px;
}

.scroll-indicator .mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .mouse::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 2px;
  animation: scrollDot 1.8s infinite;
}


/* ===== 6. 关于铭尚 ===== */

/* ---------- 6.1 品牌身份卡 ---------- */
.about-brand {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary-50) 0%, #FFFFFF 60%, #FFFFFF 100%);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  margin-bottom: 80px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.about-brand::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(66, 160, 222, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.about-brand::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.brand-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.brand-mark {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
}

.brand-mark svg {
  width: 26px;
  height: 26px;
  stroke: #fff;
}

.brand-titles {
  flex: 1;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.brand-parent {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

.brand-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: 0 0 24px 0;
}

.brand-address {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  align-items: flex-start;
}

.brand-address .addr-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
}

.brand-address .addr-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-primary);
}

.brand-address p {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--color-text-dark);
  line-height: 1.8;
  margin: 0;
}

.brand-tags {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.brand-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.brand-tag:hover {
  background: #FFFFFF;
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.brand-tag .bt-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
}

.brand-tag .bt-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-primary);
}

.brand-tag .bt-text {
  flex: 1;
  min-width: 0;
}

.brand-tag .bt-label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 2px;
}

.brand-tag .bt-desc {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.brand-advantage {
  font-size: 0.9375rem;
  color: var(--color-primary-dark);
  font-weight: 500;
  padding: 12px 18px;
  background: var(--color-primary-100);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-primary);
}

/* ---------- 6.2 我们的理念 ---------- */
.about-philosophy {
  text-align: center;
  margin-bottom: 80px;
  padding: 60px 40px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  position: relative;
}

.phi-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 4px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 24px;
  padding: 6px 14px;
  background: var(--color-primary-100);
  border-radius: 20px;
}

.phi-quote {
  position: relative;
  display: inline-block;
  margin-bottom: 16px;
}

.phi-quote .phi-cn {
  font-size: 2.75rem;
  font-weight: 600;
  color: var(--color-text-dark);
  letter-spacing: 4px;
  line-height: 1.4;
  font-family: "PingFang SC", "Microsoft YaHei", serif;
}

.phi-quote .phi-mark {
  position: absolute;
  top: -8px;
  font-size: 3.5rem;
  font-weight: 400;
  color: var(--color-primary-light);
  font-family: Georgia, serif;
  line-height: 1;
}

.phi-quote .phi-mark-open { left: -42px; }
.phi-quote .phi-mark-close { right: -42px; }

.phi-en {
  font-size: 1rem;
  color: var(--color-text-light);
  font-style: italic;
  letter-spacing: 1px;
  margin-bottom: 40px;
}

.phi-chars {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.phi-char {
  flex: 1 1 240px;
  max-width: 320px;
  padding: 32px 24px;
  background: linear-gradient(180deg, var(--color-primary-50) 0%, #FFFFFF 100%);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition);
}

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

.phi-char-glyph {
  font-size: 4rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
  font-family: "PingFang SC", "Microsoft YaHei", serif;
}

.phi-char-desc {
  font-size: 0.9375rem;
  color: var(--color-text-dark);
  line-height: 1.6;
}

.phi-char-sep {
  align-self: center;
  font-size: 1.5rem;
  color: var(--color-primary-light);
  font-weight: 300;
}

.phi-vision {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 28px;
  font-size: 1rem;
  color: var(--color-text-dark);
  line-height: 1.9;
  background: var(--color-primary-50);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
  text-align: left;
}

/* ---------- 6.3 5项硬条件 ---------- */
.about-features-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 80px;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 32px 22px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: 50%;
  transition: all var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--color-primary);
  color: #FFFFFF;
  transform: scale(1.05);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary);
  transition: stroke var(--transition);
}

.feature-card:hover .feature-icon svg {
  stroke: #fff;
}

.feature-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ---------- 6.4 统计数据 ---------- */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.stat-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.stat-card .stat-num {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-card .stat-num .unit {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-left: 4px;
}

.stat-card .stat-label {
  font-size: 0.9375rem;
  color: var(--color-text-light);
}

/* ---------- 6.5 资质标签 ---------- */
.about-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.about-tags span {
  padding: 8px 20px;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: 24px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: default;
}

.about-tags span:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  transform: translateY(-2px);
}


/* ===== 7. 服务展示 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-notice {
  margin-top: 32px;
  padding: 16px 24px;
  background: rgba(66, 160, 222, 0.06);
  border: 1px solid rgba(66, 160, 222, 0.18);
  border-radius: var(--radius-md);
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.7;
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-notice svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

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

.service-card .service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-primary-100);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: background var(--transition);
}

.service-card:hover .service-icon {
  background: var(--color-primary);
}

.service-card .service-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary);
  transition: stroke var(--transition);
}

.service-card:hover .service-icon svg {
  stroke: #fff;
}

.service-card h4 {
  font-size: 1.1875rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text-dark);
}

.service-card .service-price {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-card .service-link {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}

.service-card .service-link:hover {
  gap: 8px;
}


/* ===== 8. 新闻资讯 ===== */
.news-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.news-tab {
  padding: 8px 24px;
  border-radius: 20px;
  font-size: 0.9375rem;
  color: var(--color-text-light);
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
}

.news-tab:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}

.news-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.news-card .news-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.news-card .news-image .img-placeholder {
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}

.news-card:hover .news-image .img-placeholder {
  transform: scale(1.08);
}

.news-card .news-body {
  padding: 24px;
}

.news-card .news-date {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.news-card .news-tag {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.news-card h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text-dark);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-card .news-more {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 500;
}


/* ===== 8.5 官方文件 ===== */
.doc-list {
  max-width: 900px;
  margin: 0 auto;
}

.doc-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.doc-item:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.doc-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-100);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.doc-icon svg {
  width: 22px;
  height: 22px;
}

.doc-info {
  flex: 1;
  min-width: 0;
}

.doc-info h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.doc-info .doc-meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 12px;
}

.doc-info .doc-meta .doc-badge {
  padding: 1px 8px;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 500;
  background: var(--color-primary-100);
  color: var(--color-primary);
}

.doc-arrow {
  flex-shrink: 0;
  color: var(--color-text-light);
  transition: color var(--transition), transform var(--transition);
}

.doc-item:hover .doc-arrow {
  color: var(--color-primary);
  transform: translateX(4px);
}


/* ===== 8.6 详情弹窗 ===== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 720px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 40px 44px;
  position: relative;
  transform: translateY(24px);
  transition: transform 0.3s ease;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--color-text-light);
  cursor: pointer;
  transition: color var(--transition);
  padding: 4px 8px;
}

.modal-close:hover {
  color: var(--color-text-dark);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.modal-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.modal-date {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.modal-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text-dark);
  line-height: 1.5;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.modal-body {
  font-size: 0.9375rem;
  line-height: 1.9;
  color: #444;
}

.modal-cover {
  width: calc(100% + 48px);
  height: 280px;
  margin: -24px -24px 24px;
  background-color: var(--color-bg);
}

.modal-body p {
  margin-bottom: 16px;
}

.modal-body h5 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin: 24px 0 12px;
}

.modal-body ul,
.modal-body ol {
  margin: 0 0 16px 20px;
}

.modal-body li {
  margin-bottom: 8px;
}

.modal-body strong {
  color: var(--color-text-dark);
}


/* ===== 9. 驾校风采 ===== */
.gallery-filter {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 240px;
  gap: 20px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.gallery-item.tall {
  grid-row: span 2;
}

.gallery-item .gallery-img {
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease;
}

.gallery-item:hover .gallery-img {
  transform: scale(1.08);
}

.gallery-item .gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-item .gallery-overlay span {
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 500;
}


/* ===== 10. 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-dark);
}

.contact-form .form-hint {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-dark);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group label .required {
  color: #e24b4a;
  margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: var(--color-text-dark);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(66, 160, 222, 0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-submit {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
  margin-top: 8px;
}

.form-submit.loading {
  pointer-events: none;
  opacity: 0.7;
}

.form-message {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  display: none;
}

.form-message.success {
  display: block;
  background: #eaf3de;
  color: #3b6d11;
  border: 1px solid #c0dd97;
}

.form-message.error {
  display: block;
  background: #fcebeb;
  color: #a32d2d;
  border: 1px solid #f7c1c1;
}

.contact-info {
  padding-top: 8px;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-dark);
}

.contact-info > p {
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.8;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-info-item .info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item .info-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-primary);
}

.contact-info-item .info-text h5 {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 4px;
  font-weight: 400;
}

.contact-info-item .info-text p {
  font-size: 1rem;
  color: var(--color-text-dark);
  font-weight: 500;
}

.contact-map {
  margin-top: 32px;
  height: 200px;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
}


/* ===== 11. 底部页脚 ===== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

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

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.1875rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

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

.footer-col h5 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

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


/* ===== 12. 动画关键帧 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollDot {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(12px);
  }
}

/* 滚动加载动画 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }


/* ===== 13. 响应式 ===== */
@media (max-width: 968px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    justify-content: flex-start;
    padding: 80px 32px 32px;
    gap: 0;
    transition: right var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-menu a {
    color: var(--color-text-dark) !important;
    display: block;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 1rem;
  }

  .nav-menu .nav-cta {
    margin-top: 20px;
    width: 100%;
    justify-content: center;
    color: #fff !important;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content h1 .highlight {
    font-size: 1.5rem;
  }

  .hero-content .hero-subtitle {
    font-size: 1rem;
  }

  .hero-content .hero-subtitle-en {
    font-size: 0.875rem;
  }
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* 关于铭尚 · 平板适配 */
  .about-brand {
    padding: 36px 32px;
  }

  .brand-tags {
    grid-template-columns: 1fr;
  }

  .about-philosophy {
    padding: 48px 28px;
  }

  .phi-quote .phi-cn {
    font-size: 2.25rem;
    letter-spacing: 3px;
  }

  .phi-quote .phi-mark-open { left: -32px; }
  .phi-quote .phi-mark-close { right: -32px; }
  .phi-quote .phi-mark { font-size: 2.75rem; }

  .phi-chars {
    gap: 16px;
  }

  .phi-char-glyph {
    font-size: 3rem;
  }

  .phi-char-sep {
    display: none;
  }

  .about-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .gallery-grid {
    grid-auto-rows: 200px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --section-padding-y: 56px;
  }

  .container {
    padding: 0 16px;
  }

  .nav-logo .logo-icon,
  .footer-brand .footer-logo .logo-icon {
    width: 48px;
    height: 48px;
  }

  .hero-content h1 {
    font-size: 1.625rem;
  }

  .hero-content h1 .highlight {
    font-size: 1.25rem;
  }

  .hero-content .hero-subtitle-en {
    font-size: 0.75rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  /* 关于铭尚 · 手机适配 */
  .about-brand {
    padding: 28px 22px;
    margin-bottom: 56px;
  }

  .brand-head {
    flex-direction: column;
    gap: 12px;
  }

  .brand-title {
    font-size: 1.25rem;
  }

  .brand-tags {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .about-philosophy {
    padding: 40px 22px;
    margin-bottom: 56px;
  }

  .phi-quote .phi-cn {
    font-size: 1.75rem;
    letter-spacing: 2px;
  }

  .phi-quote .phi-mark-open { left: -22px; top: -4px; }
  .phi-quote .phi-mark-close { right: -22px; top: -4px; }
  .phi-quote .phi-mark { font-size: 2rem; }

  .phi-en {
    font-size: 0.875rem;
  }

  .phi-char {
    flex-basis: 100%;
    padding: 24px 18px;
  }

  .phi-char-glyph {
    font-size: 2.5rem;
  }

  .phi-vision {
    padding: 16px 20px;
    font-size: 0.9375rem;
  }

  .about-features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-bottom: 56px;
  }

  .feature-card {
    padding: 24px 16px;
  }

  .feature-icon {
    width: 48px;
    height: 48px;
  }

  .feature-icon svg {
    width: 24px;
    height: 24px;
  }

  .feature-title {
    font-size: 0.9375rem;
  }

  .feature-desc {
    font-size: 0.75rem;
  }

  .services-grid,
  .news-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-auto-rows: 180px;
  }

  .gallery-item.tall {
    grid-row: span 1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 24px;
  }

  .section-header h2 {
    font-size: 1.375rem;
  }
}