/* 基础变量与重置 */
:root {
    --primary-color: #D32F2F; /* 日本红 */
    --primary-dark: #B71C1C;
    --secondary-color: #1A1A1A;
    --text-main: #333333;
    --text-light: #666666;
    --bg-light: #F9F9F9;
    --bg-white: #FFFFFF;
    --border-color: #E0E0E0;
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Serif SC', serif;
    font-weight: 700;
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

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

/* 按钮样式 */
.btn-primary, .btn-secondary, .btn-primary-small, .btn-submit {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-primary-small {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 20px;
    font-size: 14px;
}

.btn-primary-small:hover {
    background-color: var(--primary-dark);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: 'Noto Serif SC', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.btn-primary-small) {
    font-weight: 500;
    color: var(--secondary-color);
    position: relative;
}

.nav-links a:not(.btn-primary-small)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-links a:not(.btn-primary-small):hover::after {
    width: 100%;
}

/* 主视觉区域 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    background-image: url('https://images.unsplash.com/photo-1493976040374-85c8e12f0c0e?q=80&w=2000&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.1) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    border-left: 3px solid var(--primary-color);
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 24px;
    text-transform: uppercase;
}

.hero-title {
    font-size: 64px;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 20px;
    font-weight: 300;
    margin-bottom: 40px;
    max-width: 600px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 30px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 500;
}

.stat-item i {
    color: var(--primary-color);
    font-size: 20px;
}

/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-desc {
    color: var(--text-light);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
}

/* 行程亮点网格 */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.card-img {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img img {
    transform: scale(1.05);
}

.card-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
}

.card-content {
    padding: 30px;
}

.card-content h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.card-content p {
    color: var(--text-light);
    font-size: 15px;
}

/* 时间轴日程 */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 40px;
    height: 100%;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 100px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-day {
    position: absolute;
    left: 0;
    top: 0;
    width: 80px;
    height: 80px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Noto Serif SC', serif;
    font-weight: 700;
    font-size: 18px;
    z-index: 2;
    box-shadow: 0 4px 10px rgba(211, 47, 47, 0.3);
}

.timeline-content {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 30px;
    left: -10px;
    width: 20px;
    height: 20px;
    background: var(--bg-white);
    transform: rotate(45deg);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

.timeline-header h3 {
    font-size: 22px;
    color: var(--secondary-color);
}

.location-badge {
    background-color: #f0f0f0;
    color: var(--text-main);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.timeline-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.timeline-list {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.timeline-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    color: var(--text-main);
    font-weight: 500;
}

.timeline-list li i {
    color: var(--primary-color);
    width: 20px;
    text-align: center;
}

/* 预订表单区域 */
.booking-wrapper {
    display: flex;
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.booking-info {
    flex: 1;
    padding: 60px;
    background-color: var(--secondary-color);
    color: white;
}

.booking-info h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.booking-info p {
    color: #cccccc;
    margin-bottom: 40px;
}

.price-box {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 40px;
    display: inline-block;
}

.price-label {
    display: block;
    font-size: 14px;
    color: #aaaaaa;
    margin-bottom: 5px;
}

.price-amount {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Noto Serif SC', serif;
}

.price-unit {
    font-size: 16px;
    color: #cccccc;
}

.included-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    color: #eeeeee;
}

.included-list li i {
    color: var(--primary-color);
}

.booking-form-container {
    flex: 1;
    padding: 60px;
}

.form-group {
    margin-bottom: 24px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--secondary-color);
}

input, select, textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
    background-color: var(--bg-light);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--bg-white);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

.btn-submit {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 16px;
    font-size: 18px;
    margin-top: 10px;
}

.btn-submit:hover {
    background-color: var(--primary-dark);
}

/* 页脚 */
.footer {
    background-color: #111111;
    color: #ffffff;
    padding: 80px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 20px;
}

.footer-brand p {
    color: #888888;
    max-width: 300px;
}

.footer h3 {
    font-size: 18px;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 10px;
}

.footer h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
}

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

.footer-links ul li a {
    color: #888888;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact p {
    color: #888888;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #666666;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 48px;
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .booking-wrapper {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-day {
        width: 40px;
        height: 40px;
        font-size: 12px;
    }
    
    .timeline-content::before {
        top: 10px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .nav-links {
        display: none; /* 移动端可添加汉堡菜单，此处简化处理 */
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .booking-info, .booking-form-container {
        padding: 30px 20px;
    }
}