/* ==================== 全局样式 ==================== */
:root {
    --primary-color: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary-color: #6366f1;
    --accent-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-light: #ffffff;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-normal);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo {
    width: 40px;
    height: 40px;
}

.brand-name {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

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

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ==================== 英雄区域 ==================== */
.hero {
    position: relative;
    padding: 140px 0 100px;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(14, 165, 233, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(14, 165, 233, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: var(--text-light);
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.gradient-text {
    background: linear-gradient(135deg, #0ea5e9, #8b5cf6, #0ea5e9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease-in-out infinite;
    background-size: 200% 200%;
    font-size: 3.5rem;
    display: inline-block;
    position: relative;
}

.gradient-text.glow-effect {
    filter: drop-shadow(0 0 20px rgba(14, 165, 233, 0.5));
}

.subtitle-text {
    font-size: 1.75rem;
    font-weight: 600;
    color: #e2e8f0;
    display: inline-block;
    animation: slideInRight 0.8s ease-out 0.3s both;
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #cbd5e1;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat-item {
    text-align: center;
    animation: scaleIn 0.6s ease-out both;
}

.stat-item:nth-child(1) {
    animation-delay: 0.7s;
}

.stat-item:nth-child(2) {
    animation-delay: 0.8s;
}

.stat-item:nth-child(3) {
    animation-delay: 0.9s;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 0.25rem;
    transition: all var(--transition-normal);
}

.stat-item:hover .stat-value {
    transform: scale(1.1);
    color: #38bdf8;
}

.stat-label {
    font-size: 0.875rem;
    color: #94a3b8;
}

/* 终端窗口动画 */
.hero-image {
    position: relative;
}

.terminal-window {
    background: #1e293b;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: float 6s ease-in-out infinite;
}

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

.terminal-header {
    background: #0f172a;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid #334155;
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.btn-close { background: #ef4444; }
.btn-minimize { background: #f59e0b; }
.btn-maximize { background: #10b981; }

.terminal-title {
    color: #94a3b8;
    font-size: 0.875rem;
    font-family: 'Courier New', monospace;
}

.terminal-body {
    padding: 1.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

.terminal-line {
    margin-bottom: 0.5rem;
    display: flex;
    gap: 0.5rem;
}

.prompt {
    color: #10b981;
    font-weight: 700;
}

.command {
    color: #38bdf8;
}

.output {
    color: #cbd5e1;
}

.typing {
    animation: typing 2s steps(10) infinite;
}

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

.cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: #38bdf8;
    animation: blink 1s step-end infinite;
}

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

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(14, 165, 233, 0);
    }
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

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

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

.btn .icon {
    width: 20px;
    height: 20px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.5rem;
}

.btn svg.icon {
    width: 20px;
    height: 20px;
}

/* ==================== 功能特性 ==================== */
.features {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 2.5rem;
}
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    stroke: white;
    stroke-width: 2;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

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

/* ==================== 产品截图 ==================== */
.screenshots {
    padding: 60px 0;
    background: white;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.screenshot-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
}

.screenshot-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
    border-bottom: 1px solid var(--border-light);
}

.screenshot-caption {
    padding: 0.875rem;
    background: white;
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== 下载区域 ==================== */
.download {
    padding: 60px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
}

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

.download-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.download-subtitle {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: 2rem;
}

.download-cards {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    max-width: 450px;
    margin-left: auto;
    margin-right: auto;
}

.download-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
    flex: 1;
}

.download-card.featured {
    border: 2px solid var(--primary-color);
    background: rgba(14, 165, 233, 0.1);
}

.download-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.download-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.download-icon svg {
    width: 30px;
    height: 30px;
    stroke: white;
    stroke-width: 2;
}

.download-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.download-card .version {
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.download-card .size {
    color: #94a3b8;
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

.download-card .btn {
    width: 100%;
}

.download-card .btn .icon {
    width: 16px;
    height: 16px;
    margin-right: 0.5rem;
}

.download-card .btn svg.icon {
    width: 16px;
    height: 16px;
}

.system-requirements {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

.system-requirements h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.system-requirements ul {
    list-style: none;
}

.system-requirements li {
    padding: 0.375rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #cbd5e1;
    font-size: 0.9rem;
}

.system-requirements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
}

/* ==================== 文档区域 ==================== */
.docs {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.doc-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
}

.doc-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.doc-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.doc-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

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

.docs-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-dark);
    color: #cbd5e1;
    padding: 40px 0 20px;
}

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

.footer-section h4 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-section p {
    line-height: 1.7;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #64748b;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-image {
        order: -1;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .gradient-text {
        font-size: 2.5rem;
    }
    
    .subtitle-text {
        font-size: 1.25rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .features-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}