/* 全局样式 */
:root {
    --primary-color: #c9a87c;
    --primary-dark: #a88860;
    --secondary-color: #2c3e50;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f2efe7;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--bg-color);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-logo {
    width: 40px;
    height: 40px;
    margin-right: 10px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 80px 0;
}

.hero-container {
    display: grid;
    grid-template-columns: 40% 60%;
    gap: 60px;
    align-items: center;
    max-width: 1400px;
    width: 100%;
    padding: 0 40px;
}

.hero-left {
    z-index: 2;
    position: relative;
}

.hero-right {
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(242, 239, 231, 0.95) 0%, rgba(230, 221, 212, 0.95) 100%),
        radial-gradient(ellipse at top, rgba(201, 168, 124, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(201, 168, 124, 0.05) 0%, transparent 50%);
    z-index: -2;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(201, 168, 124, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(201, 168, 124, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(201, 168, 124, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 60% 60%, rgba(201, 168, 124, 0.03) 0%, transparent 50%);
}

#wave-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.6;
    pointer-events: none;
}

/* 功能亮点 */
.feature-highlights {
    margin: 30px 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    border: 1px solid rgba(201, 168, 124, 0.2);
    transition: all 0.3s;
}

.highlight-item:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateX(5px);
    border-color: rgba(201, 168, 124, 0.4);
}

.highlight-icon {
    font-size: 24px;
}

/* 软件界面模拟 */
.software-mockup {
    width: 100%;
    max-width: 800px;
    background: #f8f5f0;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.3s;
}

.software-mockup:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.mockup-header {
    background: #e5ddd3;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #d5cdc3;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    cursor: pointer;
}

.control-btn.close {
    background: #ff5f57;
}

.control-btn.minimize {
    background: #ffbd2e;
}

.control-btn.maximize {
    background: #28ca42;
}

.window-title {
    flex: 1;
    text-align: center;
    font-size: 14px;
    color: #5d534b;
    font-weight: 500;
}

.mockup-body {
    padding: 20px;
    background: rgba(248, 245, 240, 0.95);
}

/* 波形显示区 */
.mockup-waveform {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(229, 221, 211, 0.6);
}

#mockup-waveform-canvas {
    width: 100%;
    height: 120px;
    border-radius: 4px;
    background: linear-gradient(to bottom, rgba(201, 168, 124, 0.05) 0%, rgba(201, 168, 124, 0.1) 100%);
}

.playback-time {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    font-size: 12px;
    color: #5d534b;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(201, 168, 124, 0.2);
    border-radius: 2px;
    position: relative;
    cursor: pointer;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 2px;
    width: 35%;
    position: relative;
    transition: width 0.3s;
}

.progress-fill::after {
    content: '';
    position: absolute;
    right: -6px;
    top: -4px;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 控制面板 */
.mockup-controls {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
}

.play-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-color);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    box-shadow: 0 4px 10px rgba(201, 168, 124, 0.3);
}

.play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 15px rgba(201, 168, 124, 0.4);
}

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

/* 模式选择器 */
.mode-selector {
    display: flex;
    gap: 5px;
    background: rgba(229, 221, 211, 0.5);
    padding: 4px;
    border-radius: 6px;
}

.mode-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: #5d534b;
    cursor: pointer;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.3s;
}

.mode-btn:hover {
    background: rgba(255, 255, 255, 0.5);
}

.mode-btn.active {
    background: var(--primary-color);
    color: white;
}

/* 音量控制 */
.volume-controls {
    flex: 1;
    display: flex;
    gap: 15px;
}

.volume-track {
    flex: 1;
}

.volume-track label {
    display: block;
    font-size: 12px;
    color: #5d534b;
    margin-bottom: 5px;
}

.volume-slider {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(201, 168, 124, 0.2);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* 歌词显示 */
.mockup-lyrics {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(248, 245, 240, 0.9) 100%);
    border-radius: 12px;
    padding: 25px 30px;
    position: relative;
    overflow: hidden;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.05);
}

.mockup-lyrics::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(201, 168, 124, 0.1) 0%, transparent 70%);
    animation: lyrics-glow 8s ease-in-out infinite;
}

@keyframes lyrics-glow {
    0%, 100% { transform: scale(0.8) rotate(0deg); opacity: 0.5; }
    50% { transform: scale(1.2) rotate(180deg); opacity: 0.8; }
}

.lyrics-container {
    position: relative;
    z-index: 1;
}

.lyrics-line {
    padding: 12px 0;
    margin: 4px 0;
    color: rgba(93, 83, 75, 0.4);
    font-size: 14px;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    letter-spacing: 0.5px;
    transform: scale(0.95);
    filter: blur(0.5px);
}

.lyrics-line.prev {
    transform: translateY(-5px) scale(0.9);
    opacity: 0.5;
}

.lyrics-line.next {
    transform: translateY(5px) scale(0.9);
    opacity: 0.5;
}

.lyrics-line.active {
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 600;
    transform: scale(1);
    filter: blur(0);
    text-shadow: 0 2px 8px rgba(201, 168, 124, 0.2);
}

/* 歌词字符高亮效果 */
.lyrics-char {
    display: inline-block;
    transition: all 0.3s;
    position: relative;
}

.lyrics-char.highlighted {
    color: var(--primary-color);
    font-weight: 700;
    transform: scale(1.1);
    text-shadow: 0 0 20px rgba(201, 168, 124, 0.6);
}

.lyrics-char.highlighted::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    animation: char-underline 0.6s ease-out;
}

@keyframes char-underline {
    from { width: 0; opacity: 0; }
    to { width: 100%; opacity: 1; }
}

/* 产品介绍滚动容器优化 */
.mockup-lyrics .lyrics-container {
    position: relative;
}

.intro-scroll-content {
    padding: 20px 0;
}

/* 产品介绍行样式 - 重新设计 */
.intro-line {
    display: block;
    padding: 15px 20px;
    font-size: 16px;
    line-height: 1.4;
    text-align: center;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0.4;
    transform: scale(0.95);
    color: #666;
    font-weight: 400;
    border-radius: 6px;
    margin: 2px 10px;
}

/* 当前激活行的样式 */
.intro-line.current {
    opacity: 1;
    color: var(--primary-color);
    font-weight: 600;
    transform: scale(1.05);
    text-shadow: 0 2px 8px rgba(201, 168, 124, 0.3);
    background: rgba(201, 168, 124, 0.08);
    box-shadow: 0 4px 15px rgba(201, 168, 124, 0.15);
    animation: currentLineGlow 3s ease-in-out infinite;
}

/* 当前行呼吸动画 */
@keyframes currentLineGlow {
    0%, 100% {
        text-shadow: 0 2px 8px rgba(201, 168, 124, 0.3);
        box-shadow: 0 4px 15px rgba(201, 168, 124, 0.15);
    }
    50% {
        text-shadow: 0 3px 12px rgba(201, 168, 124, 0.5);
        box-shadow: 0 6px 20px rgba(201, 168, 124, 0.25);
    }
}


/* 时间轴 */
.lyrics-timeline {
    position: absolute;
    bottom: 10px;
    left: 30px;
    right: 30px;
    height: 3px;
    background: rgba(201, 168, 124, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.lyrics-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    width: 0;
    transition: width 0.3s linear;
    position: relative;
    box-shadow: 0 0 10px rgba(201, 168, 124, 0.4);
}

.lyrics-progress::after {
    content: '';
    position: absolute;
    right: 0;
    top: -4px;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(201, 168, 124, 0.8);
    animation: progress-pulse 1.5s ease-in-out infinite;
}

@keyframes progress-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 15px rgba(201, 168, 124, 0.8); }
    50% { transform: scale(1.2); box-shadow: 0 0 25px rgba(201, 168, 124, 1); }
}

/* 歌词时间戳 */
.lyrics-timestamp {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 11px;
    color: rgba(93, 83, 75, 0.5);
    font-family: 'Courier New', monospace;
    z-index: 2;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary-color);
    line-height: 1.2;
    display: block !important;
    visibility: visible !important;
    /* 初始状态确保可见 */
    opacity: 1 !important;
    transform: none !important;
}

/* 确保标题内的任何span元素也可见 */
.hero-title span {
    opacity: 1 !important;
    visibility: visible !important;
    display: inline !important;
}

/* 如果需要渐变文字效果，可以选择性启用 */
.hero-title.gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version {
    font-size: 1.5rem;
    color: var(--primary-dark);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
    font-weight: 400;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 10px 20px rgba(201, 168, 124, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(201, 168, 124, 0.4);
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    margin: 0 auto 10px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

/* 功能展示区 */
.features {
    padding: 100px 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-light);
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse .feature-content {
    direction: ltr;
}

.feature-icon {
    margin-bottom: 20px;
}

.icon-3d {
    font-size: 60px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

.feature-content h3 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

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

.feature-list li {
    padding: 0.5rem 0;
    padding-left: 30px;
    position: relative;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.feature-image {
    position: relative;
}

.feature-mockup {
    background: linear-gradient(135deg, #f8f8f8 0%, #e8e8e8 100%);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.waveform-demo {
    height: 200px;
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    box-shadow: 
        inset 0 0 50px rgba(201, 168, 124, 0.1),
        0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.waveform-demo.playing {
    box-shadow: 
        inset 0 0 50px rgba(201, 168, 124, 0.2),
        0 10px 30px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(201, 168, 124, 0.2);
}

.waveform-demo.playing::before {
    animation-duration: 2s;
}

.waveform-demo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(
        circle,
        rgba(255, 215, 0, 0.6) 0%,
        rgba(201, 168, 124, 0.4) 40%,
        rgba(201, 168, 124, 0.2) 70%,
        transparent 100%
    );
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: pulse-expand 2.5s ease-out infinite;
}

.waveform-demo::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(201, 168, 124, 0.8) 50%,
        transparent 100%
    );
    transform: translateY(-50%);
    animation: center-line-pulse 2s ease-in-out infinite;
}

.waveform-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    z-index: 2;
}

.wave-bar {
    width: 5px;
    background: linear-gradient(
        to top,
        rgba(201, 168, 124, 0.8) 0%,
        rgba(255, 215, 0, 0.9) 50%,
        rgba(201, 168, 124, 0.6) 100%
    );
    border-radius: 3px;
    filter: drop-shadow(0 0 4px rgba(201, 168, 124, 0.5));
    animation: wave-bar-dance 1.5s ease-in-out infinite;
}

.wave-bar:nth-child(odd) {
    animation-delay: -0.1s;
}

.wave-bar:nth-child(even) {
    animation-delay: 0.1s;
}

.wave-bar:nth-child(1) { height: 30%; animation-duration: 1.2s; }
.wave-bar:nth-child(2) { height: 60%; animation-duration: 1.4s; }
.wave-bar:nth-child(3) { height: 45%; animation-duration: 1.1s; }
.wave-bar:nth-child(4) { height: 80%; animation-duration: 1.6s; }
.wave-bar:nth-child(5) { height: 35%; animation-duration: 1.3s; }
.wave-bar:nth-child(6) { height: 90%; animation-duration: 1.8s; }
.wave-bar:nth-child(7) { height: 25%; animation-duration: 1.0s; }
.wave-bar:nth-child(8) { height: 70%; animation-duration: 1.5s; }
.wave-bar:nth-child(9) { height: 40%; animation-duration: 1.2s; }
.wave-bar:nth-child(10) { height: 85%; animation-duration: 1.7s; }
.wave-bar:nth-child(11) { height: 20%; animation-duration: 0.9s; }
.wave-bar:nth-child(12) { height: 65%; animation-duration: 1.4s; }
.wave-bar:nth-child(13) { height: 50%; animation-duration: 1.3s; }
.wave-bar:nth-child(14) { height: 75%; animation-duration: 1.6s; }
.wave-bar:nth-child(15) { height: 30%; animation-duration: 1.1s; }
.wave-bar:nth-child(16) { height: 95%; animation-duration: 1.9s; }
.wave-bar:nth-child(17) { height: 35%; animation-duration: 1.2s; }
.wave-bar:nth-child(18) { height: 55%; animation-duration: 1.4s; }
.wave-bar:nth-child(19) { height: 40%; animation-duration: 1.3s; }
.wave-bar:nth-child(20) { height: 80%; animation-duration: 1.7s; }

.waveform-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(201, 168, 124, 0.8);
    border-radius: 50%;
    animation: float-particle 4s linear infinite;
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; animation-delay: 0.5s; }
.particle:nth-child(3) { left: 30%; animation-delay: 1s; }
.particle:nth-child(4) { left: 40%; animation-delay: 1.5s; }
.particle:nth-child(5) { left: 50%; animation-delay: 2s; }
.particle:nth-child(6) { left: 60%; animation-delay: 2.5s; }
.particle:nth-child(7) { left: 70%; animation-delay: 3s; }
.particle:nth-child(8) { left: 80%; animation-delay: 3.5s; }

.waveform-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150%;
    height: 150%;
    background: radial-gradient(
        circle,
        rgba(201, 168, 124, 0.15) 0%,
        rgba(255, 215, 0, 0.1) 30%,
        transparent 70%
    );
    transform: translate(-50%, -50%);
    animation: glow-pulse 3s ease-in-out infinite;
    pointer-events: none;
    z-index: 1;
}

.mixer-demo {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.track {
    height: 200px;
    background: linear-gradient(to bottom, var(--primary-color) 0%, transparent 100%);
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}

.track::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: var(--primary-color);
    animation: track-level 1.5s ease-in-out infinite;
    animation-delay: calc(var(--track) * 0.2s);
}

/* 歌词同步演示窗口 */
.lyrics-sync-demo {
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    position: relative;
}

.lyrics-window {
    background: #0f0f0f;
    color: #fff;
    border-radius: 16px;
    overflow: hidden;
    min-height: 500px;
    position: relative;
}

/* 歌词窗口头部 */
.lyrics-header {
    background: linear-gradient(to bottom, #1a1a1a 0%, #0f0f0f 100%);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.song-info {
    flex: 1;
}

.song-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

.song-artist {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.lyrics-controls {
    display: flex;
    gap: 8px;
}

.lyrics-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.6);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.lyrics-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* 歌词显示区域 */
.lyrics-display {
    position: relative;
    height: 350px;
    background: #0a0a0a;
}

/* 时间轴 */
.timeline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    padding: 0 20px;
    z-index: 10;
}

.timeline-progress {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: linear-gradient(90deg, rgba(201, 168, 124, 0.2) 0%, rgba(201, 168, 124, 0.1) 100%);
    width: 35%;
    transition: width 0.3s linear;
}

.timeline-markers {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.marker {
    position: absolute;
    width: 2px;
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    top: -5px;
}

/* 歌词内容区 */
.lyrics-content {
    padding-top: 40px;
    height: 100%;
    position: relative;
}

.lyrics-viewport {
    height: 100%;
    overflow: hidden;
    position: relative;
}

.lyrics-scroll-container {
    padding: 40px 40px 100px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 100%;
}

.lyrics-scroll-container.switching {
    transform: scale(0.98);
    opacity: 0.8;
}

/* 歌词行样式 */
.lyrics-line {
    margin: 15px 0;
    position: relative;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    padding-left: 60px;
    text-align: center;
    transform-origin: center;
}

.lyrics-line.prev {
    opacity: 0.5;
    transform: scale(0.9) translateY(-3px);
    filter: blur(0.3px);
    font-size: 0.95em;
}

.lyrics-line.current {
    opacity: 1;
    transform: scale(1.05) translateY(0);
    filter: blur(0);
    font-size: 1.1em;
    font-weight: 500;
    color: #c9a87c;
    text-shadow: 0 1px 4px rgba(201, 168, 124, 0.2);
    animation: currentLineGlow 2s ease-in-out infinite alternate;
}

@keyframes currentLineGlow {
    0% {
        text-shadow: 0 1px 4px rgba(201, 168, 124, 0.2);
    }
    100% {
        text-shadow: 0 2px 8px rgba(201, 168, 124, 0.4);
    }
}

.lyrics-line.next {
    opacity: 0.5;
    transform: scale(0.9) translateY(3px);
    filter: blur(0.3px);
    font-size: 0.95em;
}

.lyrics-line.upcoming {
    opacity: 0.1;
    transform: scale(0.8) translateY(20px);
    filter: blur(3px);
}

/* 时间戳 */
.time-stamp {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    color: rgba(255, 255, 255, 0.3);
    font-family: 'Courier New', monospace;
    width: 45px;
    text-align: right;
}

.lyrics-line.current .time-stamp {
    color: var(--primary-color);
    font-weight: 600;
}

/* 歌词文本 */
.lyrics-text {
    font-size: 20px;
    line-height: 1.8;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.lyrics-line.current .lyrics-text {
    font-size: 24px;
}

/* 歌词单词 */
.word {
    position: relative;
    transition: all 0.3s;
    display: inline-block;
}

.lyrics-line.current .word {
    color: rgba(255, 255, 255, 0.4);
}

.lyrics-line.current .word.sung {
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(201, 168, 124, 0.6);
    transform: scale(1.05);
}

.lyrics-line.current .word.singing {
    color: #fff;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
    position: relative;
}

.lyrics-line.current .word.singing::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #fff);
    animation: word-highlight 0.5s ease-out;
}

@keyframes word-highlight {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 100%;
        opacity: 1;
    }
}

/* 当前行进度条 */
.lyrics-progress {
    position: absolute;
    bottom: -10px;
    left: 60px;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 1px;
    overflow: hidden;
}

.lyrics-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, #fff 100%);
    transition: none; /* 移除过渡动画，让进度条立即响应 */
    box-shadow: 0 0 10px rgba(201, 168, 124, 0.6);
}

/* 粒子特效 */
.lyrics-effects {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle-effect {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* 底部信息 */
.lyrics-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, #0f0f0f 0%, transparent 100%);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.playback-info {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    font-family: 'Courier New', monospace;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.sync-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    position: relative;
}

.sync-indicator.active {
    background: var(--primary-color);
    box-shadow: 0 0 10px rgba(201, 168, 124, 0.8);
    animation: sync-pulse 1.5s ease-in-out infinite;
}

@keyframes sync-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.6;
    }
}

/* 价格区域 */
.pricing {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f6f3 0%, #e8e5df 100%);
}

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

.pricing-card {
    perspective: 1000px;
    height: 400px;
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.pricing-card:hover .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-front {
    background: var(--white);
    border: 2px solid transparent;
    transition: border-color 0.3s;
}

.pricing-card.featured .card-front {
    border-color: var(--primary-color);
}

.card-back {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    transform: rotateY(180deg);
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
}

.price-tag {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin: 20px 0;
}

.currency {
    font-size: 1.5rem;
    margin-right: 5px;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-desc {
    color: var(--text-light);
    margin-bottom: 20px;
}

.card-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.9rem;
    color: var(--text-light);
    opacity: 0.7;
}

.price-features {
    list-style: none;
    text-align: left;
    margin: 15px 0;
    padding: 0;
    flex-grow: 1;
}

.price-features li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 14px;
    line-height: 1.4;
}

.price-features li.highlight {
    color: var(--primary-color);
    font-weight: 500;
    background: rgba(201, 168, 124, 0.1);
    padding: 12px 10px;
    border-radius: 4px;
    margin: 3px 0;
    border-bottom: none;
}

.price-features li.divider {
    font-weight: 600;
    color: #fff;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px solid rgba(201, 168, 124, 0.3);
    border-bottom: none;
}

.sub-price {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 5px 0;
}

.card-back h4 {
    margin: 0 0 15px 0;
    font-size: 1.1rem;
    color: #fff;
    text-align: center;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 10px;
}

.note {
    font-size: 12px;
    opacity: 0.85;
    margin: -5px 0 0 0;
    padding: 8px 12px;
    line-height: 1.3;
}

.contact-btn {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    cursor: pointer;
    margin-top: 15px;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 150px;
    align-self: center;
}

.contact-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* 商业合作模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 450px;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 500;
}

.close-btn {
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.close-btn:hover {
    opacity: 1;
}

.modal-body {
    padding: 30px 25px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.contact-icon {
    font-size: 24px;
    width: 40px;
    text-align: center;
}

.contact-details {
    flex-grow: 1;
}

.contact-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 4px;
}

.contact-value {
    font-size: 16px;
    font-weight: 500;
    color: #333;
}

.copy-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

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

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


/* 技术架构 */
.tech {
    padding: 100px 0;
    background: var(--white);
    position: relative;
}

.tech::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(201, 168, 124, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(201, 168, 124, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.tech-stack {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 60px;
    margin: 60px 0;
    flex-wrap: wrap;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.3s;
}

.tech-item:hover {
    transform: translateY(-10px);
}

.tech-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 10px;
    display: block;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    padding: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.tech-item span {
    display: block;
    font-size: 14px;
    color: var(--text-color);
    font-weight: 500;
    margin-top: 5px;
}

.arch-diagram {
    max-width: 800px;
    margin: 0 auto;
}

#arch-svg {
    width: 100%;
    height: auto;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
}

.download-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.download-buttons {
    margin-bottom: 2rem;
}

.btn-download {
    background: var(--white);
    color: var(--primary-color);
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-icon {
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.system-req {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* 底部 */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-logo img {
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
}

.footer h4 {
    margin-bottom: 20px;
}

.footer ul {
    list-style: none;
}

.footer a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* 基础淡入动画（备用） */
[data-aos] {
    opacity: 1 !important;
    transform: none !important;
}

/* 动画 */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

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

@keyframes pulse-expand {
    0% {
        width: 0;
        height: 0;
        opacity: 0.8;
    }
    100% {
        width: 600px;
        height: 600px;
        opacity: 0;
    }
}

@keyframes center-line-pulse {
    0%, 100% {
        opacity: 0.5;
        transform: translateY(-50%) scaleX(1);
    }
    50% {
        opacity: 1;
        transform: translateY(-50%) scaleX(1.1);
    }
}

@keyframes wave-bar-dance {
    0% {
        transform: scaleY(0.3);
        opacity: 0.6;
    }
    25% {
        transform: scaleY(1.2);
        opacity: 0.9;
    }
    50% {
        transform: scaleY(0.8);
        opacity: 1;
    }
    75% {
        transform: scaleY(1.1);
        opacity: 0.8;
    }
    100% {
        transform: scaleY(0.3);
        opacity: 0.6;
    }
}

@keyframes float-particle {
    0% {
        transform: translateY(100px) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
        transform: translateY(80px) scale(1);
    }
    90% {
        opacity: 1;
        transform: translateY(-80px) scale(1);
    }
    100% {
        transform: translateY(-100px) scale(0);
        opacity: 0;
    }
}

@keyframes glow-pulse {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes wave-animation {
    0%, 100% {
        transform: scaleY(1);
    }
    50% {
        transform: scaleY(0.8);
    }
}

@keyframes track-level {
    0%, 100% {
        height: 60%;
    }
    50% {
        height: 30%;
    }
}

@keyframes highlight-progress {
    0% {
        width: 0;
    }
    100% {
        width: 100%;
    }
}