:root {
    --primary: #1a6aa2;
    --primary-light: #2c8fd6;
    --secondary: #3db39e;
    --accent: #f39c12;
    --light: #f0f8ff;
    --dark: #0a2e4e;
    --sand: #e8d5b7;
    --glass: rgba(255, 255, 255, 0.15);
    --glass-border: rgba(255, 255, 255, 0.25);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    --transition: all 0.4s ease;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--light);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background: var(--accent);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 15px 35px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow);
}

.btn:hover {
    background: #e67e22;
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent);
    margin-left: 15px;
}

.center-button {
    text-align: center;
    margin-top: 50px;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 46, 78, 0.9);
    padding: 10px 0;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo span {
    background: linear-gradient(to right, var(--secondary), var(--light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav li {
    margin: 0 15px;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    position: relative;
    padding: 8px 5px;
    transition: var(--transition);
}

.main-nav a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--accent);
    bottom: 0;
    left: 0;
    transition: var(--transition);
}

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

.main-nav a:hover:after, .main-nav a.active:after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 30px;
    height: 3px;
    background: white;
    margin: 5px 0;
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.wavy-text {
    text-align: center;
    z-index: 2;
}

.wavy-text h1 {
    font-size: 5rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 5px;
    margin-bottom: 20px;
    text-shadow: 0 5px 15px rgba(0,0,0,0.5);
    animation: waveAnimation 3s infinite;
}

@keyframes waveAnimation {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.wavy-text p {
    font-size: 1.5rem;
    margin-bottom: 40px;
}

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

.btn-primary {
    background: var(--accent);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--accent);
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 1200 120" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="none"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="%23f0f8ff"/><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5" fill="%23f0f8ff"/><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="%23f0f8ff"/></svg>');
    background-size: 1200px 100px;
}

.wave-bottom {
    animation: wave 25s linear infinite;
}

@keyframes wave {
    0% {
        background-position-x: 0;
    }
    100% {
        background-position-x: 1200px;
    }
}

/* 沙湖介绍 */
.about-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 25px;
    color: var(--accent);
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.about-image {
    flex: 1;
    position: relative;
}

.water-circle {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: ripple 4s infinite;
}

.ring:nth-child(1) {
    animation-delay: 0s;
}

.ring:nth-child(2) {
    animation-delay: 1s;
}

.ring:nth-child(3) {
    animation-delay: 2s;
}

@keyframes ripple {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

.image-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

/* 景点推荐 */
.attraction-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.attraction-card {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.attraction-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--accent);
}

.attraction-card h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--accent);
}

.map-link {
    text-align: center;
    margin-top: 40px;
}

/* 视频展示 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.video-item {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.video-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.video-thumb {
    height: 200px;
    position: relative;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    transition: var(--transition);
}

.video-item:hover .play-icon {
    background: var(--accent);
    transform: translate(-50%, -50%) scale(1.1);
}

.platform-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
}

.video-info p {
    opacity: 0.8;
    margin-bottom: 15px;
}

.video-stats {
    display: flex;
    gap: 15px;
    font-size: 0.9rem;
}

/* 图库 */
.gallery-container {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.gallery-main {
    height: 500px;
    position: relative;
}

.gallery-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.gallery-item.active {
    opacity: 1;
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.gallery-overlay h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.gallery-thumbs {
    display: flex;
    padding: 20px;
    gap: 10px;
}

.thumb {
    flex: 1;
    height: 100px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
}

.thumb:hover {
    transform: translateY(-5px);
}

.thumb-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

/* 特色体验 */
.experience-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.experience-card {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.experience-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.experience-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--accent);
}

.experience-card h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--accent);
}

.experience-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    font-size: 1.1rem;
}

.booking-box {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    margin-top: 60px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
    text-align: center;
}

.booking-box h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--accent);
}

.booking-form {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.booking-form select, .booking-form input {
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    color: white;
    min-width: 200px;
}

.booking-note {
    margin-top: 20px;
    opacity: 0.8;
}

/* 游客评论 */
.comment-tabs {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}

.tab-header {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
}

.tab {
    flex: 1;
    padding: 15px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.tab:hover, .tab.active {
    background: var(--accent);
}

.tab-content {
    padding: 30px;
}

.comment {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.comment-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
}

.user-info h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.rating {
    display: flex;
    align-items: center;
}

.rating i {
    color: var(--accent);
    margin-right: 3px;
}

.rating span {
    margin-left: 10px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.comment-body p {
    font-size: 1.1rem;
    line-height: 1.8;
}

.comment-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.actions button {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    margin-left: 15px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.actions button:hover {
    color: var(--accent);
}

/* 相关景区 */
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.related-item {
    height: 200px;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.related-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.related-name {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    font-size: 1.4rem;
    font-weight: bold;
}

/* 页脚 */
.footer {
    background: var(--dark);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    margin-bottom: 60px;
}

.footer-info h4 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--accent);
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent);
    transform: translateY(-5px);
}

.footer-links h4 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: var(--accent);
}

.footer-links ul {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-contact h4 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: var(--accent);
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.footer-contact i {
    margin-right: 10px;
    width: 20px;
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

.footer-bottom p {
    margin-bottom: 10px;
}

.footer-bottom a {
    color: var(--accent);
    text-decoration: none;
    margin: 0 10px;
}

/* 响应式设计 */
@media (max-width: 1100px) {
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        margin-top: 40px;
    }
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .section-header h2 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 15px 0;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: rgba(30, 15, 15, 0.95);
        backdrop-filter: blur(10px);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        z-index: 1001;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .mobile-toggle {
        display: block;
        z-index: 1002;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .section {
        padding: 70px 0;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 2.2rem;
    }
    
    .booking-form {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}