/* ========== 基础样式 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    backdrop-filter: blur(20px);
    background: rgba(10, 10, 10, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
}

.logo-icon {
    font-size: 28px;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 15px;
    transition: var(--transition);
}

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

.btn-contact {
    padding: 8px 20px;
    background: var(--accent);
    color: white !important;
    border-radius: 8px;
    font-weight: 500;
}

.btn-contact:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

/* ========== Hero Section ========== */
.hero {
    padding: 160px 0 120px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.hero-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 24px;
    font-weight: 500;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

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

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

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

.btn {
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Visual */
.floating-card {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

.card-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.trophy {
    font-size: 80px;
    margin-bottom: 20px;
}

.floating-card p {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.floating-card .subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

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

/* ========== Sections ========== */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

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

/* ========== About ========== */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.about-card {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 32px;
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

.about-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== Product ========== */
.product {
    background: var(--bg-secondary);
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.mock-window {
    background: #1a1a1a;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

.window-header {
    background: #0f0f0f;
    padding: 12px 16px;
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.window-content {
    padding: 32px;
}

.chat-bubble {
    background: var(--bg-tertiary);
    border-radius: 12px;
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    margin-bottom: 16px;
}

.chat-bubble:last-child {
    margin-bottom: 0;
}

.message-in {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.message-out {
    color: var(--accent);
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.feature h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.feature p {
    color: var(--text-secondary);
}

/* ========== Support ========== */
.support-notice {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.notice-icon {
    font-size: 48px;
    flex-shrink: 0;
}

.notice-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.notice-desc {
    color: var(--text-secondary);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.price-card {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 32px 24px;
    transition: var(--transition);
    position: relative;
}

.price-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.5);
}

.price-card.featured {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--gradient);
    color: white;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.price-header {
    text-align: center;
    margin-bottom: 16px;
}

.price-header h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.price {
    font-size: 42px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.price-duration {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.price-features {
    list-style: none;
}

.price-features li {
    padding: 10px 0;
    color: var(--text-secondary);
}

.support-info {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 48px;
    text-align: center;
}

.support-info h3 {
    font-size: 28px;
    margin-bottom: 32px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
.info-icon {
    font-size: 36px;
}

.thanks-text {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 16px;
}

/* ========== Contact Section ========== */
.contact {
    background: var(--bg-secondary);
}

.contact-box {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 60px 40px;
}

.contact-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.contact-box h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.contact-box > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 16px;
}

.wechat-id-box {
    background: var(--bg-secondary);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
}

.wechat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.wechat-id {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    font-family: 'Courier New', monospace;
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.btn-copy {
    background: var(--accent);
    color: white;
    border: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-copy:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-copy:active {
    transform: translateY(0);
}

.contact-note {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========== Download Section ========== */
.download {
    background: var(--bg-primary);
}

.download-box {
    text-align: center;
    padding: 80px 40px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius);
}

.download-box h2 {
    font-size: 42px;
    margin-bottom: 16px;
}

.download-box > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 18px;
}

.btn-large {
    padding: 18px 48px;
    font-size: 18px;
    background: var(--accent);
    color: white;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    border-radius: 12px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-large:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.download-note {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========== Footer ========== */
.footer {
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--bg-secondary);
}

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

.footer-left p {
    color: var(--text-secondary);
    margin-top: 12px;
    font-size: 14px;
}

.footer-right {
    text-align: right;
}

.footer-right p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 4px;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .floating-card {
        margin-top: 40px;
    }
    
    .product-showcase {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .footer-right {
        text-align: center;
    }
    
    .contact-box {
        padding: 40px 24px;
    }
    
    .download-box {
        padding: 60px 24px;
    }
    
    .section-header h2 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .wechat-id {
        font-size: 24px;
    }
}
/* ========== 使用教程 Tutorial ========== */
.tutorial {
    background: var(--bg-primary);
}

.tutorial-notice {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    padding: 24px 28px;
    margin-bottom: 60px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.tutorial-notice svg {
    flex-shrink: 0;
    color: var(--accent);
    margin-top: 2px;
}

.tutorial-notice .notice-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.tutorial-notice .notice-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-bottom: 60px;
}

.step-item {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

.step-item:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.step-number {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Courier New', monospace;
    min-width: 60px;
}

.step-header h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
    font-size: 15px;
}

.step-content p:last-of-type {
    margin-bottom: 20px;
}

.step-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.step-content kbd {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.step-tip {
    background: rgba(99, 102, 241, 0.05);
    border-left: 3px solid var(--accent);
    padding: 14px 18px;
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-tip.warning {
    background: rgba(255, 193, 7, 0.05);
    border-left-color: #ffc107;
}

.step-tip.success {
    background: rgba(76, 175, 80, 0.05);
    border-left-color: #4caf50;
}

.tip-icon {
    font-size: 18px;
    flex-shrink: 0;
}

.tutorial-footer {
    text-align: center;
    padding: 40px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.tutorial-footer p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* 响应式 */
@media (max-width: 768px) {
    .tutorial-notice {
        flex-direction: column;
        gap: 16px;
    }
    
    .step-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .step-number {
        font-size: 24px;
    }
    
    .step-header h3 {
        font-size: 18px;
    }
    
    .step-item {
        padding: 24px 20px;
    }
}