body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: 
        linear-gradient(135deg, rgba(255, 248, 240, 0.1) 0%, rgba(256, 0.1) 100%),
        url('hero-background.jpg') center/cover no-repeat fixed,
        linear-gradient(135deg, #f5f1eb 0%, #ebe4d1 50%, #e8dcc0 100%);
    color: #5a4a3a;
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 248, 240, 0.8);
    backdrop-filter: blur(1px);
    z-index: -1;
}

.header {
    text-align: center;
    padding: 60px 20px;
    background: rgba(255, 248, 240, 0.9);
    border-radius: 20px;
    margin: 20px auto;
    max-width: 1000px;
    box-shadow: 0 8px 32px rgba(139, 117, 87, 0.15);
    backdrop-filter: blur(10px);
}

.main-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #d4945a, #c8956d, #b8906b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 8px rgba(139, 117, 87, 0.3);
}

.time-display {
    font-size: 1.4rem;
    color: #8b7557;
    margin-bottom: 30px;
    font-family: 'Georgia', 'Times New Roman', serif;
    background: rgba(255, 248, 240, 0.7);
    padding: 12px 24px;
    border-radius: 25px;
    display: inline-block;
    border: 2px solid rgba(139, 117, 87, 0.2);
    box-shadow: 0 4px 15px rgba(139, 117, 87, 0.1);
}

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

.nav-item {
    padding: 12px 25px;
    background: rgba(255, 248, 240, 0.8);
    color: #8b7557;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(139, 117, 87, 0.2);
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(139, 117, 87, 0.1);
}

.nav-item:hover, .nav-item.active {
    background: linear-gradient(135deg, #d4945a, #c8956d);
    color: #fff8f0;
    border-color: rgba(139, 117, 87, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 117, 87, 0.2);
}

.content-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.section-content {
    display: none;
    background: rgba(255, 248, 240, 0.9);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(139, 117, 87, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(139, 117, 87, 0.1);
    min-height: 0;
}

.section-content:empty {
    padding: 0;
    border: none;
    box-shadow: none;
    background: none;
}

.section-content.active {
    display: block;
    animation: fadeInUp 0.5s ease-out;
}

.section-content h2 {
    color: #8b7557;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
    background: linear-gradient(135deg, #d4945a, #c8956d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-content p {
    color: #8b7557;
    font-size: 1.2rem;
    line-height: 1.8;
    text-align: center;
    margin-bottom: 20px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 音乐控件样式 */
.music-control {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 12px;
}

.music-info {
    text-align: right;
    color: #8b7557;
    font-family: 'Microsoft YaHei', sans-serif;
    white-space: nowrap;
    padding: 6px 10px;
    background: rgba(255, 248, 240, 0.85);
    border-radius: 8px;
    border: 1px solid rgba(212, 148, 90, 0.2);
    box-shadow: 0 2px 8px rgba(139, 117, 87, 0.1);
    backdrop-filter: blur(4px);
    transition: opacity 0.3s ease;
    opacity: 0.7;
}

.music-info:hover {
    opacity: 1;
}

.music-title {
    font-size: 16px;
    font-weight: 600;
    color: #d4945a;
    margin-bottom: 2px;
    line-height: 1.2;
}

.music-artist {
    font-size: 13px;
    color: #c8956d;
    margin-bottom: 1px;
    font-weight: 500;
    line-height: 1.2;
}

.music-album {
    font-size: 11px;
    color: #8b7557;
    opacity: 0.8;
    font-style: italic;
    line-height: 1.2;
}

.music-disc {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: url('hero-background.jpg');
    background-size: cover;
    background-position: center;
    border: 3px solid #d4945a;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
    animation: discSpin 10s linear infinite;
    animation-play-state: paused;
}

.music-disc:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

.music-disc.spinning {
    animation-play-state: running;
}

@keyframes discSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-title {
        font-size: 2.5rem;
    }

    .header {
        padding: 40px 15px;
        margin: 10px;
    }

    .content-area {
        padding: 20px 10px;
    }

    .section-content {
        padding: 30px 20px;
    }

    .navigation {
        gap: 10px;
    }

    .nav-item {
        padding: 10px 18px;
        font-size: 14px;
    }

    .music-control {
        bottom: 20px;
        right: 20px;
        gap: 8px;
        flex-direction: column;
        align-items: flex-end;
    }

    .music-disc {
        width: 50px;
        height: 50px;
    }

    .music-info {
        font-size: 12px;
        padding: 4px 8px;
        max-width: 120px;
    }

    .music-title {
        font-size: 13px;
    }

    .music-artist {
        font-size: 11px;
    }

    .music-album {
        font-size: 9px;
    }

    .access-links {
        flex-direction: column;
        align-items: center;
    }

    .access-link {
        width: 80%;
        text-align: center;
    }
}