/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: #fff;
    line-height: 1.6;
}

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

/* 导航栏样式 */
.navbar {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #00d4ff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.music-note {
    font-size: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #00d4ff;
}

.btn-login, .btn-register, .btn-logout {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login {
    background: transparent;
    color: #00d4ff;
    border: 2px solid #00d4ff;
}

.btn-register {
    background: #00d4ff;
    color: #000;
}

.btn-login:hover {
    background: #00d4ff;
    color: #000;
}

.btn-register:hover {
    background: #00b8e6;
    transform: translateY(-2px);
}

/* 英雄区域 */
.hero {
    padding: 150px 0 100px;
    text-align: center;
    background: radial-gradient(circle at center, #0f3460, #1a1a2e);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #00d4ff, #7b2cbf);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #ccc;
}

.upload-area {
    border: 3px dashed #00d4ff;
    border-radius: 15px;
    padding: 3rem;
    margin: 2rem auto;
    max-width: 600px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(0, 212, 255, 0.05);
}

.upload-area:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-5px);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.btn-upload {
    background: #00d4ff;
    color: #000;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.btn-upload:hover {
    background: #00b8e6;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

/* 音乐风格区域 */
.styles-section {
    padding: 80px 0;
    background: #1a1a2e;
}

.styles-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #00d4ff;
}

.style-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.style-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid transparent;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.style-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, #00d4ff, #7b2cbf);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.style-card:hover::before {
    opacity: 0.1;
}

.style-card.selected {
    border-color: #00d4ff;
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.style-card h3 {
    margin-bottom: 1rem;
    color: #fff;
}

.style-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* 处理控制面板 */
.processing-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #16213e, #1a1a2e);
}

.controls-panel {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    margin-top: 2rem;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #00d4ff;
}

.control-group input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #333;
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #00d4ff;
    cursor: pointer;
}

.btn-process {
    background: linear-gradient(45deg, #00d4ff, #7b2cbf);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 1rem;
}

.btn-process:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

/* 进度条 */
.progress-container {
    margin-top: 1.5rem;
    padding: 0 1rem;
}

.progress-bar {
    width: 100%;
    max-width: 600px;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00d4ff, #7b2cbf);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 3px;
    display: block;
}

#progressText {
    text-align: center;
    margin-top: 0.8rem;
    color: #00d4ff;
    font-size: 0.9rem;
}

/* 结果展示区 */
.results-section {
    padding: 80px 0;
    background: #1a1a2e;
}

.result-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    margin-top: 2rem;
    text-align: center;
}

.audio-player {
    margin-bottom: 2rem;
}

/* 播放器信息 */
.player-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 8px;
}

.player-status {
    color: #00d4ff;
    font-size: 0.9rem;
}

.player-time {
    color: #ccc;
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
}

/* 试听徽章 */
.preview-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(45deg, #ff6b6b, #ffa500);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    margin: 1rem 0;
    font-size: 0.9rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7);
    }
    50% { 
        transform: scale(1.05);
        box-shadow: 0 0 20px 10px rgba(255, 107, 107, 0);
    }
}

.badge-icon {
    font-size: 1.2rem;
}

.preview-note {
    color: #ff6b6b;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-style: italic;
}

/* 试听限制提示框 */
.preview-alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    z-index: 10000;
    animation: slideIn 0.3s ease;
    border: 2px solid #00d4ff;
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.3);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.preview-alert.success {
    border-color: #00ff88;
    box-shadow: 0 20px 60px rgba(0, 255, 136, 0.3);
}

.alert-content {
    text-align: center;
}

.alert-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.alert-content h3 {
    color: #00d4ff;
    margin-bottom: 0.5rem;
}

.alert-content p {
    color: #ccc;
    margin: 0.5rem 0;
}

.alert-highlight {
    color: #00d4ff !important;
    font-weight: bold;
    margin-top: 1rem !important;
}

.alert-content ul {
    list-style: none;
    text-align: left;
    margin: 1rem 0;
    padding: 0;
}

.alert-content li {
    color: #fff;
    padding: 0.3rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.alert-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00ff88;
}

.btn-alert-upgrade {
    background: linear-gradient(45deg, #00d4ff, #7b2cbf);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    margin: 0.5rem;
    transition: all 0.3s ease;
}

.btn-alert-upgrade:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

.btn-alert-close {
    background: transparent;
    color: #ccc;
    border: 2px solid #666;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    margin: 0.5rem;
    transition: all 0.3s ease;
}

.btn-alert-close:hover {
    border-color: #00d4ff;
    color: #00d4ff;
}

/* 认证模态框 */
.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: 15px;
    padding: 2rem;
    max-width: 450px;
    width: 90%;
    border: 2px solid #00d4ff;
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    color: #00d4ff;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: #ccc;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: #ff6b6b;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: #00d4ff;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid #333;
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.05);
}

.btn-submit {
    width: 100%;
    background: linear-gradient(45deg, #00d4ff, #7b2cbf);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

.modal-footer-text {
    text-align: center;
    color: #ccc;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.modal-footer-text a {
    color: #00d4ff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.modal-footer-text a:hover {
    color: #00b8e6;
    text-decoration: underline;
}

/* 会员徽章 */
#membershipBadge {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-left: 0.5rem;
}

.badge-pro {
    background: linear-gradient(45deg, #ffd700, #ffaa00);
    color: #000;
}

.badge-free {
    background: #666;
    color: #fff;
}

/* 下载按钮状态 */
.btn-download {
    background: #666;
    color: #999;
    cursor: not-allowed;
    transition: all 0.3s ease;
}

.btn-download.unlocked {
    background: linear-gradient(45deg, #00d4ff, #00b8e6);
    color: #000;
    cursor: pointer;
    animation: glow 2s infinite;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 212, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.8);
    }
}

.btn-download.unlocked:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

/* 升级按钮 */
.btn-upgrade {
    background: linear-gradient(45deg, #ff6b6b, #ffa500);
    color: white;
    position: relative;
    overflow: hidden;
}

.btn-upgrade::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

.btn-upgrade:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 107, 107, 0.3);
}

/* 音乐元素装饰 */
.music-decoration {
    position: fixed;
    pointer-events: none;
    opacity: 0.1;
    font-size: 2rem;
    animation: float 10s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* 统计面板样式 */
.statistics-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.statistics-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #00d4ff;
}

.statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    border: 2px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: #00d4ff;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: #00d4ff;
    margin-bottom: 0.5rem;
    font-family: 'Orbitron', sans-serif;
}

.stat-label {
    color: #ccc;
    font-size: 1rem;
}

/* 图表容器 */
.chart-container {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 3rem;
    border: 2px solid rgba(0, 212, 255, 0.3);
}

.chart-container h3 {
    color: #00d4ff;
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 200px;
    padding: 0 1rem;
    margin-bottom: 1rem;
}

.chart-bar {
    width: 8%;
    background: linear-gradient(to top, #00d4ff, #7b2cbf);
    border-radius: 5px 5px 0 0;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
    min-height: 10px;
}

.chart-bar:hover {
    opacity: 0.8;
    transform: scaleY(1.05);
}

.chart-bar::after {
    content: attr(data-time);
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: #ccc;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.chart-bar:hover::after {
    opacity: 1;
}

.chart-labels {
    display: flex;
    justify-content: space-around;
    padding: 0 1rem;
}

.chart-labels span {
    color: #ccc;
    font-size: 0.8rem;
    width: 8%;
    text-align: center;
}

/* 风格统计 */
.style-stats {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    border: 2px solid rgba(0, 212, 255, 0.3);
}

.style-stats h3 {
    color: #00d4ff;
    margin-bottom: 2rem;
    text-align: center;
    font-size: 1.5rem;
}

.style-stat-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.style-stat-item {
    display: grid;
    grid-template-columns: 30px 100px 1fr 80px;
    align-items: center;
    gap: 1rem;
}

.style-rank {
    background: linear-gradient(45deg, #ffd700, #ffaa00);
    color: #000;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
}

.style-stat-item:nth-child(n+4) .style-rank {
    background: linear-gradient(45deg, #666, #999);
    color: #fff;
}

.style-name {
    color: #fff;
    font-weight: bold;
}

.style-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.style-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #00d4ff, #7b2cbf);
    border-radius: 4px;
    transition: width 1s ease;
}

.style-count {
    color: #ccc;
    font-size: 0.9rem;
    text-align: right;
}

/* 定价区域 */
.pricing-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #16213e, #1a1a2e);
}

.pricing-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #00d4ff;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.pricing-card.featured {
    border: 2px solid #00d4ff;
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: #00d4ff;
    color: #000;
    padding: 0.5rem 2rem;
    transform: rotate(45deg);
    font-size: 0.8rem;
    font-weight: bold;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    margin: 1rem 0;
    color: #00d4ff;
}

.price span {
    font-size: 1rem;
    color: #ccc;
}

.pricing-card ul {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.pricing-card li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.pricing-card li::before {
    content: attr(data-check);
    position: absolute;
    left: 0;
    color: #00d4ff;
}

.btn-plan {
    background: #00d4ff;
    color: #000;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-plan.current {
    background: #666;
    color: #999;
    cursor: default;
}

.btn-plan:hover:not(.current) {
    background: #00b8e6;
    transform: translateY(-2px);
}

/* 页脚 */
footer {
    background: #000;
    padding: 2rem 0;
    text-align: center;
    color: #666;
}

/* 安全播放器样式 */
.secure-player {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 44, 191, 0.1));
    border: 2px solid #00d4ff;
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
}

.secure-player::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 212, 255, 0.03) 2px,
        rgba(0, 212, 255, 0.03) 4px
    );
    pointer-events: none;
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.player-controls {
    display: flex;
    gap: 0.5rem;
}

.ctrl-btn {
    background: rgba(0, 212, 255, 0.2);
    border: 2px solid #00d4ff;
    color: #fff;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ctrl-btn:hover {
    background: #00d4ff;
    transform: scale(1.1);
}

.ctrl-btn:active {
    transform: scale(0.95);
}

/* 进度条 */
.progress-wrapper {
    margin: 1rem 0;
    padding: 0 0.5rem;
}

.progress-track {
    position: relative;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    cursor: pointer;
    max-width: 100%;
    margin: 0.5rem 0;
}

.progress-buffer {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, #00d4ff, #7b2cbf);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
    z-index: 1;
}

.progress-handle {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 14px;
    height: 14px;
    background: #00d4ff;
    border-radius: 50%;
    border: 2px solid #fff;
    cursor: grab;
    transition: transform 0.2s ease;
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
    z-index: 2;
}

.progress-handle:hover {
    transform: translate(-50%, -50%) scale(1.15);
}

.progress-handle:active {
    cursor: grabbing;
}

/* 音量控制 */
.volume-control {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
}

.volume-icon {
    font-size: 1.5rem;
    cursor: pointer;
}

.volume-slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: #00d4ff;
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: #00d4ff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* 水印 */
.watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-30deg);
    font-size: 3rem;
    color: rgba(0, 212, 255, 0.1);
    pointer-events: none;
    white-space: nowrap;
    z-index: 1;
}

/* 安全提示 */
.security-note {
    text-align: center;
    color: #ff6b6b;
    font-size: 0.9rem;
    margin-top: 1rem;
    padding: 0.5rem;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 8px;
}

/* 禁用右键菜单提示 */
.context-menu-blocked {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    color: #ff6b6b;
    padding: 1rem 2rem;
    border-radius: 10px;
    border: 2px solid #ff6b6b;
    z-index: 9999;
    animation: fadeInOut 2s ease;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; }
    20%, 80% { opacity: 1; }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .style-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
}