styles.css

/* 云游 · 旅游网站样式 */
:root {
  --font-serif: "Noto Serif SC", serif;
  --font-sans: "Noto Sans SC", sans-serif;
  --color-bg: #faf9f6;
  --color-surface: #fff;
  --color-primary: #0d6b5c;
  --color-primary-light: #128a78;
  --color-accent: #c4a35a;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #e8e6e1;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
  --radius: 12px;
  --radius-lg: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

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

.btn-menu {
  display: none;
  width: 28px;
  height: 28px;
  border: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%231a1a1a'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 6h16M4 12h16M4 18h16'/%3E%3C/svg%3E") center/contain no-repeat;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

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

.btn-primary:hover {
  background: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

/* Hero */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0d6b5c 0%, #0a5247 50%, #083d35 100%);
  background-image: 
    linear-gradient(to bottom, rgba(13,107,92,0.85) 0%, rgba(8,61,53,0.9) 100%),
    url(https://images.unsplash.com/photo-1488646953014-85cb44e25828?w=1920&q=80);
  background-size: cover;
  background-position: center;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.hero-content > p {
  color: rgba(255,255,255,0.9);
  font-size: 1.1rem;
  margin-bottom: 40px;
}

.hero-search {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  background: rgba(255,255,255,0.95);
  padding: 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.hero-search input,
.hero-search select {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  min-width: 140px;
}

.hero-search input[type="date"] {
  min-width: 160px;
}

.hero-search .btn-primary {
  min-width: 100px;
}

/* Sections */
.section {
  padding: 72px 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 36px;
  text-align: center;
}

/* Destinations */
.dest-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.dest-card {
  position: relative;
  display: block;
  height: 220px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: #fff;
  background: var(--color-primary);
  background-size: cover;
  background-position: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.dest-card:nth-child(1) { background-image: linear-gradient(to top, rgba(0,0,0,0.6), transparent 50%), url(https://images.unsplash.com/photo-1493976040374-85c8e12f0c0e?w=500&q=80); }
.dest-card:nth-child(2) { background-image: linear-gradient(to top, rgba(0,0,0,0.6), transparent 50%), url(https://images.unsplash.com/photo-1552465011-b4e21bf6e79a?w=500&q=80); }
.dest-card:nth-child(3) { background-image: linear-gradient(to top, rgba(0,0,0,0.6), transparent 50%), url(https://images.unsplash.com/photo-1548013146-72479768bada?w=500&q=80); }
.dest-card:nth-child(4) { background-image: linear-gradient(to top, rgba(0,0,0,0.6), transparent 50%), url(https://images.unsplash.com/photo-1528181304800-259b08848526?w=500&q=80); }

.dest-label,
.dest-desc {
  position: absolute;
  left: 20px;
  right: 20px;
}

.dest-label {
  bottom: 44px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
}

.dest-desc {
  bottom: 18px;
  font-size: 0.9rem;
  opacity: 0.9;
}

/* Tours */
.tours {
  background: var(--color-surface);
}

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

.tour-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.tour-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tour-img {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.tour-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 20px;
}

.tour-body {
  padding: 20px;
}

.tour-body h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.tour-body p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.tour-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.tour-price {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1rem;
}

.section-cta {
  text-align: center;
  margin-top: 40px;
}

/* Guides */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.guide-card {
  display: block;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.guide-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.guide-img {
  height: 160px;
  background-size: cover;
  background-position: center;
}

.guide-body {
  padding: 18px;
}

.guide-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.guide-body p {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

/* Footer */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.85);
  padding: 56px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

.footer .logo {
  color: #fff;
}

.footer-brand p {
  margin-top: 8px;
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-size: 0.95rem;
}

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

.footer-contact p {
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.footer-bottom {
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 900px) {
  .dest-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tour-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }
  .guide-grid {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin: 0 auto;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .nav {
    display: none;
  }
  .btn-menu {
    display: block;
  }
  .hero-search {
    flex-direction: column;
  }
  .hero-search input,
  .hero-search select {
    width: 100%;
    min-width: 0;
  }
  .dest-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 48px 0;
  }
}

/* 移动端展开菜单 */
.nav.open {
  display: flex;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--color-surface);
  flex-direction: column;
  padding: 24px;
  gap: 16px;
  border-bottom: 1px solid var(--color-border);
}