:root {
    --primary-color: #D4AF37; /* 香槟金 */
    --bg-dark: #1A1A1A; /* 纯黑/深灰 */
    --bg-light: #2C2C2C; /* 深灰 */
    --text-main: #E0E0E0;
    --text-muted: #999999;
}

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

body {
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
}

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

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

/* Header */
header {
    background-color: rgba(26, 26, 26, 0.95);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #333;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    letter-spacing: 2px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    font-size: 16px;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--primary-color);
}

.search-box {
    position: relative;
}

.search-box input {
    background: transparent;
    border: 1px solid #555;
    color: #fff;
    padding: 8px 15px;
    border-radius: 20px;
    outline: none;
    transition: border-color 0.3s;
}

.search-box input:focus {
    border-color: var(--primary-color);
}

/* Banner */
.banner {
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('../images/banner.jpg') center/cover;
}

.banner h1 {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
    letter-spacing: 4px;
}

.banner p {
    font-size: 18px;
    color: #ccc;
    max-width: 600px;
    margin: 0 auto;
}

/* Section */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 50px;
    font-weight: 300;
    letter-spacing: 2px;
}

/* Video Cards */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.video-card {
    background: var(--bg-light);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s;
    cursor: pointer;
}

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

.video-thumb {
    position: relative;
    height: 180px;
    background: #333;
}

.video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: rgba(212, 175, 55, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 15px solid #fff;
    margin-left: 5px;
}

.video-card:hover .play-btn {
    opacity: 1;
}

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 16px;
    margin-bottom: 10px;
    color: #fff;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

/* FAQ */
.faq-item {
    background: var(--bg-light);
    margin-bottom: 15px;
    padding: 20px;
    border-radius: 5px;
    border-left: 3px solid var(--primary-color);
}

.faq-q {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.faq-a {
    color: #ccc;
}

/* Reviews */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 8px;
    position: relative;
}

.review-card::before {
    content: '"';
    font-size: 60px;
    color: rgba(212, 175, 55, 0.2);
    position: absolute;
    top: 10px;
    left: 20px;
}

.review-text {
    font-style: italic;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.review-author {
    color: var(--primary-color);
    text-align: right;
}

/* Footer */
footer {
    background-color: #111;
    padding: 60px 0 30px;
    border-top: 1px solid #333;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-col p, .footer-col a {
    color: var(--text-muted);
    margin-bottom: 10px;
    display: block;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: var(--text-muted);
    font-size: 14px;
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
        gap: 15px;
    }
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    .banner h1 {
        font-size: 32px;
    }
}