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

body {
  font-family: 'Noto Serif SC', 'Playfair Display', serif;
  color: #222;
  background: #fff;
  line-height: 1.6;
}

/* ===== Hero 顶部横幅 ===== */
.hero {
  position: relative;
  height: 100vh;
  background: url('/images/vehicle-hero.jpg') center/cover no-repeat;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
}
.hero .overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.1);
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}
.hero p {
  font-size: 1.1rem;
}

/* ✅ 底部渐变过渡（新加部分） */
.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 160px;
  background: linear-gradient(to bottom, rgba(0,0,0,0) 0%, #fff 100%);
  pointer-events: none;
  z-index: 2;
}

/* ======== 轻透简约导航栏 ======== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 18px 60px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  background: rgba(0, 0, 0, 0.08);  /* ✅ 更浅的透明度 */
  backdrop-filter: blur(3px);       /* ✅ 轻柔模糊，让文字仍可读 */
  z-index: 100;
  border: none;                     /* ✅ 去掉下边框 */
  box-shadow: none;                 /* ✅ 去掉阴影 */
}

/* 导航链接 */
.nav-links {
  list-style: none;
  display: flex;
  gap: 40px;
}

.nav-links a {
  text-decoration: none;
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3); /* ✅ 柔和阴影，仅提升可读性 */
}

.nav-links a:hover {
  color: #ffffff;
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.9);
}


/* 手机端优化 */
@media (max-width: 768px) {
  .navbar {
    padding: 10px 20px;
    justify-content: center;
    background: rgba(0, 0, 0, 0.15);
  }

  .nav-links {
    gap: 25px;
  }

  .nav-links a {
    font-size: 14px;
  }
}

/* ===== 车型区块 ===== */
.car-section {
  padding: 60px 10%;
  background: #fff;
}
.car-content {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  align-items: flex-start;
}
.car-images {
  flex: 1 1 400px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.car-images img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  object-fit: cover;
}
.car-text {
  flex: 1 1 450px;
}
.car-text h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}
.car-text h2 span {
  font-size: 1rem;
  color: #777;
}
.car-text .desc {
  margin-bottom: 14px;
  color: #444;
}

.features {
  list-style: none;
  margin-bottom: 15px;
}
.features li {
  margin-bottom: 8px;
}
.features i {
  color: #ff9966;
  margin-right: 8px;
}

.use-cases h3,
.price-table h3 {
  margin-top: 12px;
  font-size: 1.1rem;
  color: #333;
}

.use-cases p {
  margin-top: 4px;
}

.price-table {
  margin-top: 12px;
}
.price-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.price-table th, .price-table td {
  border-bottom: 1px solid #eee;
  padding: 8px 0;
}
.price-table th {
  color: #555;
  text-align: left;
}

/* 按钮 */
.cta-buttons {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.book-btn {
  background: linear-gradient(90deg, #ff6666, #ff9966);
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: 25px;
  cursor: pointer;
  font-weight: 700;
  transition: .3s;
}
.book-btn:hover {
  opacity: .9;
}
.contact-btn {
  background: #fff;
  border: 2px solid #ff9966;
  color: #ff9966;
  padding: 10px 22px;
  border-radius: 25px;
  cursor: pointer;
  font-weight: 700;
  transition: .3s;
}
.contact-btn:hover {
  background: #ff9966;
  color: #fff;
}

/* ===== 对比表 ===== */
.comparison {
  padding: 60px 10%;
  background: #fafafa;
  text-align: center;
}
.comparison h2 {
  margin-bottom: 20px;
}
.comparison table {
  width: 100%;
  border-collapse: collapse;
}
.comparison th, .comparison td {
  border: 1px solid #ddd;
  padding: 12px;
}
.comparison th {
  background: #ffebe0;
  color: #333;
}

/* ===== 品牌保障 ===== */
.guarantee {
  background: #fafafa;
  border-top: 2px solid #ff9966;
  padding: 60px 10%;
  text-align: center;
}

.guarantee h2 {
  color: #333;
  margin-bottom: 20px;
}

.guarantee ul {
  list-style: none;   /* ✅ 移除左侧黑点 */
  padding: 0;
  margin: 0 auto;
  display: inline-block;
  text-align: left;
}

.guarantee li {
  margin: 10px 0;
  font-size: 16px;
  color: #333;
  display: flex;
  align-items: center;
  gap: 8px;
}

.guarantee li::before {
  content: "✅";
  color: #1fab4d;  /* ✅ 用一个统一绿色 */
  font-size: 18px;
  flex-shrink: 0;
}


/* ===== FAQ 常见问题 ===== */
.faq {
  background: #fff;
  padding: 60px 10%;
  text-align: center;
}
.faq h2 {
  margin-bottom: 30px;
  font-size: 1.8rem;
  color: #333;
}
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  text-align: left;
}
.faq-item {
  background: #f9f9f9;
  border-radius: 12px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.05);
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: all 0.3s ease;
}
.faq-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
}
.faq-item h3 {
  font-size: 1.1rem;
  color: #ff7b1a;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.faq-item p {
  font-size: 0.95rem;
  color: #444;
  line-height: 1.6;
}

/* ===== 响应式 ===== */
@media(max-width:768px) {
  .car-content {
    flex-direction: column;
  }
  .car-images {
    grid-template-columns: 1fr;
  }
  .nav-tabs {
    flex-wrap: wrap;
  }
}