/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #2c2c2c;
    --accent-color: #c9a961;
    --accent-light: #d4bc7b;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #f8f8f8;
    --white: #ffffff;
    --border-color: #e5e5e5;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.8;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* 导航栏 */
.navbar {
    background: var(--white);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar-top {
    background: var(--primary-color);
    color: rgba(255,255,255,0.7);
    font-size: 12px;
    padding: 8px 0;
}

.navbar-top .container {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

.navbar-top a:hover {
    color: var(--white);
}

.navbar-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    height: 90px;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 32px;
    font-weight: 400;
    letter-spacing: 10px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--text-dark);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 2px;
    padding: 10px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s;
}

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

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

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* 轮播图 */
.hero {
    margin-top: 0;
    position: relative;
    height: 750px;
    overflow: hidden;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.4) 0%, rgba(0,0,0,0.2) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-content {
    color: var(--white);
    max-width: 900px;
}

.hero-content h2 {
    font-size: 64px;
    font-weight: 300;
    letter-spacing: 20px;
    margin-bottom: 30px;
}

.hero-content p {
    font-size: 20px;
    font-weight: 300;
    letter-spacing: 8px;
    margin-bottom: 50px;
    opacity: 0.95;
}

.hero-btn {
    display: inline-block;
    padding: 16px 50px;
    background: var(--white);
    color: var(--primary-color);
    font-size: 14px;
    letter-spacing: 3px;
    text-transform: uppercase;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.hero-btn:hover {
    background: var(--accent-color);
    color: var(--white);
}

/* 轮播控制 */
.hero-controls {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.hero-dot {
    width: 40px;
    height: 3px;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all 0.3s;
}

.hero-dot.active {
    background: var(--white);
}

.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 36px;
    color: var(--white);
    cursor: pointer;
    padding: 20px;
    z-index: 10;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.hero-arrow:hover {
    opacity: 1;
}

.hero-arrow.prev { left: 30px; }
.hero-arrow.next { right: 30px; }

/* 通用章节 */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 300;
    color: var(--primary-color);
    letter-spacing: 10px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 60px;
    text-transform: uppercase;
}

/* 商业设施及服务 */
.business-facilities {
    padding: 80px 0 100px;
}

.facilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
    background: var(--border-color);
    border: 2px solid var(--border-color);
}

.facility-card {
    position: relative;
    height: 450px;
    overflow: hidden;
    background: var(--white);
    transition: all 0.5s;
}

.facility-card:hover {
    transform: translateY(-10px);
}

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

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

.facility-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--white);
}

.facility-name {
    font-size: 20px;
    font-weight: 400;
    letter-spacing: 5px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.facility-desc {
    font-size: 13px;
    opacity: 0.8;
    letter-spacing: 2px;
}

.facility-link {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 25px;
    border: 1px solid var(--white);
    color: var(--white);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: all 0.3s;
}

.facility-link:hover {
    background: var(--white);
    color: var(--primary-color);
}

/* 公司新闻 */
.company-news {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.news-card {
    background: var(--white);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.news-content {
    padding: 30px;
}

.news-date {
    color: var(--accent-color);
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.news-content h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.8;
    letter-spacing: 1px;
}

.news-content p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 2;
    margin-bottom: 20px;
}

.news-link {
    color: var(--accent-color);
    font-size: 13px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 商务推广 */
.business-promotion {
    padding: 100px 0;
}

.promotion-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 20px;
    margin-bottom: 60px;
}

.promotion-card {
    position: relative;
    height: 350px;
    overflow: hidden;
    cursor: pointer;
}

.promotion-card.large {
    grid-row: span 2;
    height: 720px;
}

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

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

.promotion-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: var(--white);
}

.promotion-overlay h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

.promotion-overlay p {
    font-size: 13px;
    opacity: 0.9;
    letter-spacing: 1px;
}

/* Newsletter */
.newsletter {
    background: var(--bg-light);
    padding: 60px 0;
}

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

.newsletter-logo h3 {
    font-size: 24px;
    font-weight: 300;
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.newsletter-logo p {
    color: var(--text-light);
    font-size: 14px;
}

.newsletter-links {
    display: flex;
    gap: 40px;
}

.nl-link {
    text-align: center;
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--text-light);
}

.nl-link-icon {
    font-size: 28px;
    margin-bottom: 8px;
    color: var(--accent-color);
}

.nl-link:hover {
    color: var(--accent-color);
}

/* 页脚 */
.footer {
    background: #0a0a0a;
    color: rgba(255,255,255,0.5);
    padding: 60px 0 30px;
    font-size: 12px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 50px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-section h4 {
    color: var(--white);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 2px;
    margin-bottom: 25px;
    text-transform: uppercase;
}

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

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    letter-spacing: 1px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

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

/* 响应式 */
@media (max-width: 1400px) {
    .facilities-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 1024px) {
    .facilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .promotion-grid {
        grid-template-columns: 1fr 1fr;
    }
    .promotion-card.large {
        grid-column: span 2;
        height: 350px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero-content h2 {
        font-size: 36px;
        letter-spacing: 10px;
    }
    .hero-content p {
        font-size: 16px;
        letter-spacing: 3px;
    }
    .facilities-grid,
    .news-grid,
    .promotion-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }
    .promotion-card.large {
        grid-column: auto;
        height: 350px;
    }
    .container {
        padding: 0 20px;
    }
    .navbar-main .container {
        padding: 0 20px;
    }
}