/* 京都青春物语风 CSS 变量配置 */
:root {
  --color-bg: #FFFDF8;
  --color-main: #4DB6AC;
  --color-accent: #B2DFDB;
  --color-text: #3E2723;
  --color-text-light: #5d4037;
  --color-white: #ffffff;
  --color-border: rgba(77, 182, 172, 0.2);
  --color-shadow: rgba(62, 39, 35, 0.05);
  
  --font-family-base: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --radius-card: 16px;
  --radius-btn: 12px;
  --shadow-card: 0 4px 20px var(--color-shadow);
  --shadow-hover: 0 8px 30px rgba(77, 182, 172, 0.15);
  --transition-base: all 0.3s ease;
  
  --max-width: 1200px;
}

/* 基础重置与排版 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: #26a69a;
}

ul, ol {
  list-style: none;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 减少动画媒体查询 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 253, 248, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--color-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--color-main);
}

.nav-actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  border: none;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--color-main);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(77, 182, 172, 0.3);
}

.btn-primary:hover {
  background-color: #3f9b93;
  transform: translateY(-2px);
  color: var(--color-white);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-main);
  border: 1px solid var(--color-main);
}

.btn-outline:hover {
  background-color: var(--color-main);
  color: var(--color-white);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 80px 0;
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero-content {
  flex: 1;
}

.tag-badge {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--color-accent);
  color: #00695c;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: bold;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 2.5rem;
  line-height: 1.3;
  margin-bottom: 24px;
  color: var(--color-text);
}

.hero p.desc {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

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

.trust-badges {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.trust-badges span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-badges span::before {
  content: "✓";
  color: var(--color-main);
  font-weight: bold;
}

.hero-image {
  flex: 1;
  background: var(--color-white);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  position: relative;
  border: 1px solid var(--color-border);
}

/* 公共区块卡片 */
.section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 4px;
  background-color: var(--color-main);
  border-radius: 2px;
}

.section-header p {
  color: var(--color-text-light);
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
  border: 1px solid rgba(77, 182, 172, 0.1);
  height: 100%;
}

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

/* Footer */
.footer {
  background-color: #f7f4ec;
  padding: 60px 0 20px;
  border-top: 1px solid var(--color-border);
  margin-top: 60px;
}

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

.footer-brand h3 {
  color: var(--color-main);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.footer-links h4 {
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.footer-links ul li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(0,0,0,0.05);
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* 风险提示框 */
.alert-box {
  background-color: #fff3e0;
  border-left: 4px solid #ff9800;
  padding: 16px 20px;
  border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
  margin: 20px 0;
  color: #e65100;
}

.alert-box.info {
  background-color: #e1f5fe;
  border-color: #03a9f4;
  color: #01579b;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-main);
}

.breadcrumb span.separator {
  color: #ccc;
}