/* LyraLyra Studio - International Landing Page Styles */

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Modern & International */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-900: #0c4a6e;
    
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-image {
    height: 120px;
    width: auto;
    transition: all 0.3s ease;
}

.logo-image:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #e67e22;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #e67e22;
    transition: width 0.3s ease;
}

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

/* Hero 区域样式 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

/* Hero Background Elements */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #ff6b6b, #feca57);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #48dbfb, #0abde3);
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.orb-3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, #ff9ff3, #f368e0);
    bottom: 20%;
    left: 60%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.badge-icon {
    font-size: var(--font-size-base);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, #feca57, #ff9ff3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: var(--space-8);
    margin: var(--space-8) 0;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-top: var(--space-1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Button Icons */
.btn-icon {
    font-size: var(--font-size-base);
    margin-right: var(--space-2);
}

/* Feature Icons */
.feature-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    margin: 0 auto var(--space-5);
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-2xl);
    opacity: 0.1;
}

.icon-bg.privacy {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
}

.icon-bg.quality {
    background: linear-gradient(135deg, #feca57, #ff9f43);
}

.icon-bg.global {
    background: linear-gradient(135deg, #48dbfb, #0abde3);
}

.icon-bg.simple {
    background: linear-gradient(135deg, #ff9ff3, #f368e0);
}

.icon-bg.marketplace {
    background: linear-gradient(135deg, #a8e6cf, #7fcdcd);
}

.icon-bg.payment {
    background: linear-gradient(135deg, #ffd93d, #ff6b6b);
}

.icon-emoji {
    position: relative;
    z-index: 1;
    font-size: var(--font-size-2xl);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Item Icons */
.item-icon {
    font-size: var(--font-size-2xl);
    margin-right: var(--space-3);
}

/* Progress Circle */
.progress-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.2);
    stroke-width: 4;
}

.progress-fill {
    fill: none;
    stroke: #feca57;
    stroke-width: 4;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 70.75;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

/* Download Icon */
.download-icon {
    font-size: var(--font-size-lg);
    margin-right: var(--space-2);
}

/* Mockup Styles */
.hero-mockup {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 1s ease-out;
}

.mockup-window {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    width: 400px;
    max-width: 100%;
}

.mockup-header {
    background: rgba(248, 250, 252, 0.8);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

.mockup-controls {
    display: flex;
    gap: var(--space-2);
}

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

.control.red {
    background: #ff5f57;
}

.control.yellow {
    background: #ffbd2e;
}

.control.green {
    background: #28ca42;
}

.mockup-title {
    font-weight: 600;
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

.mockup-content {
    padding: var(--space-6);
    display: flex;
    gap: var(--space-4);
    min-height: 200px;
}

.mockup-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 120px;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-600);
    transition: all 0.2s ease;
}

.sidebar-item.active {
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    color: var(--primary-700);
}

.sidebar-item:hover:not(.active) {
    background: var(--gray-100);
    color: var(--gray-700);
}

.item-text {
    font-size: var(--font-size-xs);
}

.mockup-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.progress-ring {
    position: relative;
    width: 120px;
    height: 120px;
    margin-bottom: var(--space-4);
}

.progress-circle {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-percent {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
}

.progress-label {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    font-weight: 500;
    margin-top: var(--space-1);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: slideInLeft 1s ease-out;
}

.hero-title {
    font-size: 3.5em;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.4em;
    color: #f8f9fa;
    margin-bottom: 20px;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-description {
    font-size: 1.1em;
    color: #e9ecef;
    margin-bottom: 40px;
    line-height: 1.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #e67e22, #f39c12);
    color: white;
    box-shadow: 0 8px 25px rgba(230, 126, 34, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(230, 126, 34, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 1s ease-out;
}

.hero-placeholder {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.studio-icon {
    font-size: 5em;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.hero-placeholder p {
    font-size: 1.5em;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 功能特色区域 */
.features {
    padding: 100px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    color: var(--primary-700);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
    border: 1px solid var(--primary-200);
}

.section-title {
    text-align: center;
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-6);
    line-height: 1.2;
}

.section-description {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-16);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.feature-card {
    background: white;
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--primary-200);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 3em;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
    line-height: 1.3;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

/* 制作流程区域 */
.workflow {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.step {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #e67e22, #f39c12);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 1.4em;
    font-weight: 700;
    color: #2d3436;
    margin-bottom: 15px;
}

.step-content p {
    color: #636e72;
    line-height: 1.7;
}

/* 技术特色区域 */
.tech-features {
    padding: 100px 0;
    background: white;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-16);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.tech-item {
    background: white;
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.tech-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--primary-200);
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tech-item:hover::before {
    opacity: 1;
}

.tech-item h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
    line-height: 1.3;
}

.tech-item p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    color: white;
}

.download .section-title {
    color: white;
}

.download .section-title::after {
    background: white;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 60px;
}

.download-info h3 {
    font-size: 1.8em;
    font-weight: 700;
    margin-bottom: 20px;
}

.download-info ul {
    list-style: none;
    margin-bottom: 30px;
}

.download-info li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
}

.download-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00b894;
    font-weight: bold;
}

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

.btn-download {
    background: white;
    color: #0984e3;
    font-size: 1.2em;
    padding: 20px 40px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.btn-download:hover {
    background: #f8f9fa;
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

.download-note {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
}

.download-preview {
    display: flex;
    justify-content: center;
}

.app-preview {
    perspective: 1000px;
}

.preview-window {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.preview-window:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.window-header {
    background: #f8f9fa;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-bottom: 1px solid #e9ecef;
}

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

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

.control.red { background: #ff5f57; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #28ca42; }

.window-title {
    font-weight: 600;
    color: #2d3436;
}

.window-content {
    padding: 20px;
    height: 200px;
}

.app-interface {
    display: flex;
    height: 100%;
    gap: 15px;
}

.sidebar {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    width: 120px;
    text-align: center;
    font-weight: 600;
    color: #636e72;
}

.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-highlight {
    background: linear-gradient(135deg, #e67e22, #f39c12);
    color: white;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
}

/* 页脚样式 */
.footer {
    background: #2d3436;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    margin-bottom: var(--space-4);
}

.footer-logo-image {
    height: 48px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #e67e22;
}

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

.footer-section ul li {
    padding: 5px 0;
    color: #b2bec3;
}

.footer-section p {
    color: #b2bec3;
    line-height: 1.7;
}

.footer-bottom {
    border-top: 1px solid #636e72;
    padding-top: 20px;
    text-align: center;
    color: #b2bec3;
}

/* 动画效果 */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.hero-placeholder {
    animation: pulse 3s ease-in-out infinite;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5em;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 100%;
        gap: var(--space-6);
    }
    
    .workflow-steps {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
        gap: var(--space-6);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2em;
    }
    
    .section-title {
        font-size: 2.2em;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 1em;
    }
    
    .feature-card,
    .step,
    .tech-item {
        padding: 30px 20px;
    }
}