/* 全局重置与基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #07080a; 
    color: #e0e2ea;
    overflow-x: hidden;
    line-height: 1.6;
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: rgba(7, 8, 10, 0.7);
    backdrop-filter: blur(15px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    letter-spacing: 2px;
}

.badge {
    font-size: 12px;
    background: linear-gradient(45deg, #00f3ff, #bc13fe);
    padding: 2px 6px;
    border-radius: 4px;
    vertical-align: top;
    color: #000;
}

nav a {
    color: #a0a5b5;
    text-decoration: none;
    margin-left: 30px;
    transition: color 0.3s ease;
    font-size: 15px;
}

nav a:hover {
    color: #00f3ff;
}

.nav-btn {
    border: 1px solid #00f3ff;
    padding: 8px 20px;
    border-radius: 20px;
    color: #00f3ff;
}

.nav-btn:hover {
    background: #00f3ff;
    color: #000;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.4);
}

/* 英雄首屏 (改为双列布局) */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 5% 60px;
    overflow: hidden;
}

#waveCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.4;
}

.glow-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.4;
}

.glow-circle.blue {
    width: 400px;
    height: 400px;
    background: #00f3ff;
    top: 20%;
    left: 10%;
    animation: float 8s infinite alternate;
}

.glow-circle.purple {
    width: 500px;
    height: 500px;
    background: #bc13fe;
    bottom: 10%;
    right: 5%;
    animation: float 10s infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(-50px) scale(1.1); }
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    width: 100%;
    gap: 50px;
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 25px;
    line-height: 1.1;
    text-shadow: 0 0 30px rgba(0, 243, 255, 0.2);
}

.hero-content p {
    font-size: 1.15rem;
    color: #a0a5b5;
    max-width: 550px;
    margin-bottom: 40px;
}

/* 悬浮界面图 (Mockup) */
.hero-mockup {
    flex: 1;
    perspective: 1000px;
    display: flex;
    justify-content: center;
}

.glass-panel {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    width: 100%;
    max-width: 600px;
    height: 350px;
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.5), 0 0 40px rgba(188, 19, 254, 0.2);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
    display: flex;
    flex-direction: column;
}

.glass-panel:hover {
    transform: rotateY(0deg) rotateX(0deg) translateY(-10px);
}

.mockup-header {
    height: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    padding: 0 15px;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.mockup-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* 按钮样式 */
.btn-primary, .btn-secondary {
    padding: 15px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s ease;
    display: inline-block;
    margin-right: 15px;
}

.btn-primary {
    background: linear-gradient(45deg, #00f3ff, #bc13fe);
    color: #000;
    border: none;
    box-shadow: 0 0 20px rgba(188, 19, 254, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(188, 19, 254, 0.6);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: #00f3ff;
    color: #00f3ff;
}

/* 各大区块通用 */
.features-section, .showcase-section, .faq-section {
    padding: 100px 5%;
    position: relative;
    z-index: 10;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.section-title span {
    color: #bc13fe;
    text-shadow: 0 0 10px rgba(188, 19, 254, 0.5);
}

/* 功能区 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: #00f3ff;
    background: rgba(0, 243, 255, 0.03);
}

.feature-card .icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #fff;
}

.feature-card p {
    color: #8b92a5;
    font-size: 0.95rem;
}

/* 试听区 */
.audio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.audio-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 40px;
    border-radius: 20px;
    position: relative;
}

.audio-card .tag {
    position: absolute;
    top: -15px;
    left: 40px;
    background: #bc13fe;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.audio-card h3 {
    font-size: 1.3rem;
    margin-bottom: 30px;
    color: #fff;
}

.player-ui {
    display: flex;
    align-items: center;
    gap: 15px;
}

.play-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
    font-size: 0.9rem;
}

.play-btn:hover { background: rgba(255, 255, 255, 0.2); }
.play-btn.active { background: #00f3ff; color: #000; font-weight: bold; }
.divider { color: #666; font-size: 0.9rem; }
.showcase-note { text-align: center; color: #666; font-size: 0.85rem; margin-top: 30px; }

/* FAQ区 */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 25px 30px;
    border-radius: 15px;
}

.faq-item h4 {
    color: #00f3ff;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.faq-item p {
    color: #a0a5b5;
    font-size: 0.95rem;
}

/* 下载引导区 */
.download-section {
    padding: 100px 5%;
    text-align: center;
}

.download-box {
    background: linear-gradient(135deg, rgba(0, 243, 255, 0.1), rgba(188, 19, 254, 0.1));
    border: 1px solid rgba(188, 19, 254, 0.3);
    border-radius: 30px;
    padding: 60px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.download-box h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #fff;
}

.download-box p {
    color: #a0a5b5;
    margin-bottom: 30px;
}

.version-info {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 30px;
}

.btn-large { font-size: 18px; padding: 18px 50px; }

/* 页脚 */
footer {
    text-align: center;
    padding: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #555;
    font-size: 0.9rem;
}

/* 动画基础类 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* 响应式适配 */
@media (max-width: 968px) {
    .hero-container { flex-direction: column; text-align: center; margin-top: 40px; }
    .hero-content { text-align: center; }
    .hero-content h1 { font-size: 3rem; }
    .hero-content p { margin: 0 auto 30px; }
    .btn-primary, .btn-secondary { margin: 10px; }
}