/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #ff6b35;
    --primary-dark: #e55a2b;
    --primary-light: #ff8c5a;
    --secondary: #f7931e;
    --accent: #ffa366;
    --bg-dark: #0d0d0d;
    --bg-card: #1a1a1a;
    --bg-hover: #252525;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #999999;
    --border-color: #333333;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏 - 影视网站风格 */
.main-header {
    background: rgba(26, 26, 26, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
}

.brand-tag {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    padding: 3px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-card);
}

.header-nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 6px;
}

.nav-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 6px;
    transition: all 0.3s;
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-item.active {
    color: var(--text-primary);
    background: var(--gradient-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* 主横幅 - 影视网站风格 */
.hero-banner {
    background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 20px;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 22px;
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-weight: 500;
}

.hero-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-muted);
}

.hero-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    animation: fadeInRight 0.8s ease-out;
    position: relative;
}

.hero-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.4) 100%);
    pointer-events: none;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 主容器 */
.main-wrapper {
    padding: 0;
    background: var(--bg-dark);
}

/* 介绍区块 */
.intro-section {
    padding: 80px 0;
    background: var(--bg-card);
    position: relative;
}

.intro-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--border-color) 50%, transparent 100%);
}

.intro-content {
    max-width: 1000px;
    margin: 0 auto;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 40px;
    text-align: center;
}

.intro-text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-secondary);
}

.intro-text p {
    margin-bottom: 22px;
}

.intro-text p:last-child {
    margin-bottom: 0;
}

/* 视频网格 - 影视网站特色 */
.videos-section {
    padding: 80px 0;
    background: var(--bg-dark);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    margin: 0;
}

.section-more {
    color: var(--primary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.section-more:hover {
    color: var(--primary-light);
    transform: translateX(5px);
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.video-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.video-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.video-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.video-thumb {
    width: 100%;
    height: 200px;
    position: relative;
    overflow: hidden;
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.video-card:hover .video-thumb img {
    transform: scale(1.1);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-card:hover .video-overlay {
    opacity: 1;
}

.play-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    padding-left: 4px;
    box-shadow: var(--shadow-md);
}

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.video-tag {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    background: rgba(255, 107, 53, 0.15);
    color: var(--primary);
    font-weight: 600;
    border: 1px solid rgba(255, 107, 53, 0.3);
}

.video-time {
    font-size: 12px;
    color: var(--text-muted);
}

/* 平台特色区块 */
.features-section {
    padding: 80px 0;
    background: var(--bg-card);
    position: relative;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--border-color) 50%, transparent 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.feature-item:hover .feature-icon {
    border-color: var(--primary);
    transform: scale(1.1);
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-muted);
}

/* 页面标题 */
.page-header {
    background: var(--bg-card);
    padding: 60px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 48px;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 15px;
}

.page-subtitle {
    font-size: 18px;
    color: var(--text-muted);
}

/* 内容区块 */
.content-section {
    padding: 60px 0;
    background: var(--bg-card);
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.content-title {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 30px;
    line-height: 1.2;
}

.content-image {
    margin: 40px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.content-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.3) 100%);
    pointer-events: none;
}

.content-image img {
    width: 100%;
    height: auto;
    display: block;
}

.content-text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-secondary);
}

.content-text h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    margin: 30px 0 20px;
}

.content-text p {
    margin-bottom: 20px;
}

.content-text p:last-child {
    margin-bottom: 0;
}

/* 页脚 */
.main-footer {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 60px 0 25px;
    margin-top: 80px;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 600px;
}

.footer-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 20px;
}

.footer-text {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-muted);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-column {
    flex: 1;
}

.footer-heading {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

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

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

.footer-list a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        order: -1;
        max-width: 600px;
        margin: 0 auto;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .videos-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--bg-card);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s;
        z-index: 999;
        border-top: 1px solid var(--border-color);
    }

    .nav-list.active {
        left: 0;
    }

    .nav-list li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-item {
        display: block;
        padding: 15px 0;
        border-radius: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero-title {
        font-size: 40px;
    }

    .section-title {
        font-size: 28px;
    }

    .videos-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .page-title {
        font-size: 36px;
    }

    .content-title {
        font-size: 32px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}