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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --bg-white: #ffffff;
    --bg-gray: #f7fafc;
    --bg-light: #edf2f7;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

/* 产品切换器 */
.product-switcher {
    display: flex;
    gap: 8px;
    background: rgba(102, 126, 234, 0.1);
    padding: 4px;
    border-radius: 8px;
}

.product-tab {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: #4a5568;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.product-tab.active {
    background: white;
    color: #667eea;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.product-tab:hover:not(.active) {
    background: rgba(255, 255, 255, 0.5);
}

.free-badge {
    color: #ef4444;
    font-size: 12px;
    font-weight: 600;
    margin-left: 4px;
}

/* 默认隐藏 AosomeBoard 内容（但不隐藏tab按钮） */
[data-product="aosomeboard"]:not(.product-tab) {
    display: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* 按钮样式 */
.btn {
    padding: 10px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

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

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

/* 英雄区域 */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, #f7fafc 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 20px;
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.hero-description {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    text-align: left;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* 英雄区域图片 */
.hero-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    height: 500px;
}

.hero-image-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-card {
    position: absolute;
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    right: 20%;
    width: 240px;
    padding: 16px;
    animation-delay: 0s;
}

.card-2 {
    top: 35%;
    right: 5%;
    width: 300px;
    height: 200px;
    animation-delay: 0.5s;
}

.card-3 {
    bottom: 15%;
    right: 25%;
    padding: 12px 20px;
    animation-delay: 1s;
}

.card-header {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.toolbar {
    display: flex;
    gap: 12px;
}

.tool {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 6px;
    font-size: 16px;
}

.screenshot-preview {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.screenshot-preview::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.rec-dot {
    width: 10px;
    height: 10px;
    background: #ef4444;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
}

.icon-blue {
    background: linear-gradient(135deg, #667eea 0%, #5568d3 100%);
}

.icon-purple {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.icon-pink {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.icon-green {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.icon-orange {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.icon-teal {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* CTA 区域 */
.cta {
    padding: 100px 0;
    background: var(--gradient);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-description {
    font-size: 20px;
    margin-bottom: 32px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.cta-note {
    font-size: 14px;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    padding: 60px 0 30px;
    background: var(--text-primary);
    color: rgba(255, 255, 255, 0.8);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.footer-description {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.7;
}

.footer-heading {
    font-size: 16px;
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    opacity: 0.6;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-image {
        display: none;
    }

    .hero-content {
        max-width: 100%;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-description {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .section-title {
        font-size: 32px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .cta-title {
        font-size: 32px;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #fff;
    padding: 40px;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-content h3 {
    margin: 0 0 20px 0;
    font-size: 24px;
    color: #1a1a1a;
}

.modal-content p {
    margin: 12px 0;
    font-size: 16px;
    color: #4a5568;
    line-height: 1.6;
}

.modal-content a {
    color: #667eea;
    text-decoration: none;
}

.modal-content a:hover {
    text-decoration: underline;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: #333;
}

/* 适用人群样式 */
.audience {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.audience-card {
    background: white;
    padding: 32px 24px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.audience-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.audience-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.audience-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0 0 8px 0;
}

.audience-card p {
    font-size: 14px;
    color: #718096;
    margin: 0;
}

/* 更多专业特性样式 */
.features-alt {
    background: #1a1a2e;
    color: white;
}

.features-alt .section-title {
    color: white;
}

.features-alt .section-description {
    color: rgba(255, 255, 255, 0.7);
}

.features-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.features-alt .feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.features-alt .feature-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.features-alt .feature-title {
    color: white;
}

.features-alt .feature-description {
    color: rgba(255, 255, 255, 0.8);
}

/* 版本历史模态框 */
.version-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.version-modal-content {
    background-color: #fff;
    padding: 0;
    border-radius: 20px;
    max-width: 700px;
    width: 90%;
    max-height: 80vh;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.version-modal-header {
    padding: 32px 40px 24px;
    border-bottom: 1px solid #e2e8f0;
    background: linear-gradient(135deg, #f7fafc 0%, #ffffff 100%);
}

.version-modal-header h3 {
    margin: 0;
    font-size: 28px;
    font-weight: 800;
    color: #1a202c;
    display: flex;
    align-items: center;
    gap: 12px;
}

.version-modal-header h3::before {
    content: '📋';
    font-size: 32px;
}

.version-modal-body {
    padding: 32px 40px;
    overflow-y: auto;
    flex: 1;
}

.version-modal-close {
    position: absolute;
    right: 24px;
    top: 24px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    font-size: 24px;
    color: #718096;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 1;
}

.version-modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #1a202c;
    transform: rotate(90deg);
}

/* 版本时间轴 */
.version-timeline {
    position: relative;
    padding-left: 40px;
}

.version-timeline::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #667eea 0%, #e2e8f0 100%);
}

.version-item {
    position: relative;
    padding: 0 0 40px 0;
}

.version-item:last-child {
    padding-bottom: 0;
}

.version-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #cbd5e0;
    border: 3px solid white;
    box-shadow: 0 0 0 2px #cbd5e0;
    transition: all 0.3s;
}

.version-item.current::before {
    background: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
    width: 16px;
    height: 16px;
    left: -35px;
    top: 4px;
}

.version-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.version-number {
    font-size: 24px;
    font-weight: 700;
    color: #1a202c;
}

.version-badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.version-date {
    font-size: 14px;
    color: #718096;
    margin-left: auto;
}

.version-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    white-space: nowrap;
}

.version-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.version-download-btn::before {
    content: '⬇';
    font-size: 14px;
}

.version-download-btn.current {
    background: linear-gradient(135deg, #48bb78, #38a169);
}

.version-download-btn.current:hover {
    box-shadow: 0 4px 12px rgba(72, 187, 120, 0.4);
}

.changelog-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.changelog-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    background: #f7fafc;
    border-radius: 10px;
    font-size: 15px;
    line-height: 1.6;
    color: #2d3748;
    transition: all 0.2s;
    white-space: pre-line;
}

.changelog-list li:hover {
    background: #edf2f7;
    transform: translateX(4px);
}

.change-icon {
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.change-new {
    border-left: 3px solid #48bb78;
}

.change-new .change-icon::before {
    content: '✨';
}

.change-improve {
    border-left: 3px solid #4299e1;
}

.change-improve .change-icon::before {
    content: '🔧';
}

.change-fix {
    border-left: 3px solid #ed8936;
}

.change-fix .change-icon::before {
    content: '🐛';
}

/* 版本链接按钮 */
.version-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    color: #667eea;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.version-link:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #5568d3;
}

.version-link::after {
    content: '📝';
    font-size: 16px;
}

/* 响应式 */
@media (max-width: 768px) {
    .version-modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .version-modal-header {
        padding: 24px 24px 20px;
    }

    .version-modal-header h3 {
        font-size: 22px;
    }

    .version-modal-body {
        padding: 24px;
    }

    .version-timeline {
        padding-left: 32px;
    }

    .version-number {
        font-size: 20px;
    }

    .changelog-list li {
        font-size: 14px;
        padding: 10px 12px;
    }
}

/* 视频演示模态框 */
.video-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    align-items: center;
    justify-content: center;
}

.video-modal-content {
    position: relative;
    width: 90%;
    max-width: 1200px;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.video-modal-content video {
    width: 100%;
    height: auto;
    display: block;
}

.video-modal-close {
    position: absolute;
    right: -50px;
    top: 0;
    font-size: 40px;
    font-weight: bold;
    color: #fff;
    cursor: pointer;
    background: none;
    border: none;
    padding: 10px;
    line-height: 1;
    transition: all 0.3s ease;
    z-index: 2001;
}

.video-modal-close:hover {
    color: #667eea;
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .video-modal-content {
        width: 95%;
    }

    .video-modal-close {
        right: 10px;
        top: 10px;
        font-size: 32px;
        background: rgba(0, 0, 0, 0.5);
        border-radius: 50%;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}