/* 重置样式和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 */
    --primary-color: #2c3e50;
    --primary-light: #3498db;
    --primary-dark: #1a252f;
    
    /* 辅助色 */
    --secondary-color: #e74c3c;
    --accent-color: #f39c12;
    --success-color: #27ae60;
    
    /* 中性色 */
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-muted: #95a5a6;
    --background: #ffffff;
    --background-light: #f8f9fa;
    --background-dark: #ecf0f1;
    --border-color: #e9ecef;
    
    /* 字体 */
    --font-family: 'Noto Sans SC', -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;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 基础样式 */
html {
    font-size: 16px;
    line-height: 1.5;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 布局容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* 导航栏样式 */
.navbar {
    background: var(--background);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.brand-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.brand-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-links {
    display: none;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) 0;
    border-bottom: 2px solid transparent;
    transition: var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-light);
}

.nav-mobile-toggle {
    display: flex;
    flex-direction: column;
    gap: 3px;
    cursor: pointer;
    padding: var(--spacing-sm);
}

@media (min-width: 768px) {
    .nav-mobile-toggle {
        display: none;
    }
}

.nav-mobile-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-base);
}

/* 主横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    padding: var(--spacing-3xl) 0;
    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="20" cy="20" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.badge-icon {
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.title-highlight {
    background: linear-gradient(45deg, #ffd700, #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero-description {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.hero-features {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-base);
}

.feature-tag:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

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

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
    animation: countUp 2s ease-out;
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.hero-cta {
    position: relative;
    overflow: hidden;
    background: linear-gradient(45deg, #ff6b6b, #ffd700);
    border: none;
    color: var(--primary-color);
    font-weight: 700;
    transition: all var(--transition-base);
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition-slow);
}

.hero-cta:hover::before {
    left: 100%;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.btn-icon {
    margin-left: var(--spacing-sm);
    transition: var(--transition-base);
}

.hero-cta:hover .btn-icon {
    transform: translateX(5px);
}

.hero-social-proof {
    margin-top: var(--spacing-xl);
}

.social-avatars {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.avatar-group {
    display: flex;
    margin-right: var(--spacing-md);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    font-size: var(--font-size-lg);
}

.avatar:first-child {
    margin-left: 0;
}

.social-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.social-count {
    font-weight: 600;
    font-size: var(--font-size-base);
}

.social-desc {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* 预览卡片 */
.hero-preview {
    position: relative;
}

.preview-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition-slow);
}

.preview-card:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.preview-controls {
    display: flex;
    gap: var(--spacing-sm);
}

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

.control-dot.red { background: #ff5f56; }
.control-dot.yellow { background: #ffbd2e; }
.control-dot.green { background: #27ca3f; }

.preview-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.preview-content {
    padding: var(--spacing-xl);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.grid-cell {
    aspect-ratio: 1;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background: white;
    transition: var(--transition-base);
}

.grid-cell.primary {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.grid-cell.trace {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.grid-cell.opacity-70 { opacity: 0.7; }
.grid-cell.opacity-40 { opacity: 0.4; }

.grid-cell.practice-hint {
    border-style: dashed;
    border-color: #ccc;
}

.preview-char {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.main-char {
    animation: pulse 2s ease-in-out infinite;
}

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

.preview-pinyin {
    font-size: var(--font-size-xs);
    margin-top: 2px;
    opacity: 0.8;
}

.practice-text {
    font-size: var(--font-size-xs);
    color: #999;
}

.preview-toolbar {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.toolbar-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #ddd;
    background: white;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: var(--transition-base);
}

.toolbar-btn.active,
.toolbar-btn:hover {
    background: var(--primary-light);
    color: white;
    border-color: var(--primary-light);
}

.preview-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0,0,0,0.05);
    font-size: var(--font-size-sm);
}

.label-badge {
    background: var(--success-color);
    color: white;
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 漂浮元素 */
.floating-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.float-element {
    position: absolute;
    font-size: 2rem;
    opacity: 0.3;
    animation: floatAround var(--duration, 6s) ease-in-out infinite;
    animation-delay: var(--delay, 0s);
}

.float-element:nth-child(1) { top: 10%; left: 5%; }
.float-element:nth-child(2) { top: 60%; right: 10%; }
.float-element:nth-child(3) { bottom: 20%; left: 15%; }
.float-element:nth-child(4) { top: 30%; right: 25%; }

@keyframes floatAround {
    0%, 100% { transform: translateY(0) translateX(0) rotate(0deg); }
    25% { transform: translateY(-20px) translateX(10px) rotate(5deg); }
    50% { transform: translateY(-10px) translateX(-10px) rotate(-5deg); }
    75% { transform: translateY(-30px) translateX(5px) rotate(3deg); }
}

/* 快速配置区域 */
.quick-config {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.quick-config-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.quick-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    grid-column: 1 / -1;
}

.quick-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.title-icon {
    font-size: var(--font-size-4xl);
    animation: lightning 1.5s ease-in-out infinite;
}

@keyframes lightning {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.quick-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.quick-form {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.form-step {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    margin-bottom: var(--spacing-2xl);
}

.form-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.form-group {
    flex: 1;
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-base);
}

.label-icon {
    font-size: var(--font-size-lg);
}

.input-wrapper {
    position: relative;
}

.form-input {
    width: 100%;
    padding: var(--spacing-lg);
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.1);
}

.input-hint {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.hint-text {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.template-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.template-option {
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
    background: white;
    position: relative;
}

.template-option:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.template-option.active {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.option-icon {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.option-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2px;
}

.option-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.option-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-color);
    color: white;
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.form-actions {
    text-align: center;
}

.quick-generate {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    margin-bottom: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.quick-generate::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: var(--transition-slow);
}

.quick-generate:hover::before {
    left: 100%;
}

.generate-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.quick-preview-mini {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.mini-preview-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

.mini-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.mini-cell {
    width: 40px;
    height: 40px;
    border: 2px solid var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.mini-cell.fade {
    opacity: 0.5;
    animation: fadeIn 2s ease-in-out infinite;
}

@keyframes fadeIn {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .quick-config-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .template-selector {
        grid-template-columns: 1fr;
    }
    
    .form-step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        align-self: center;
    }
}

/* 快速配置表单 */
.quick-form {
    background: var(--background);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.quick-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.quick-form .form-group:last-child {
    margin-bottom: 0;
}

.quick-form label {
    display: block;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.quick-form input,
.quick-form select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
}

.quick-form input:focus,
.quick-form select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--background);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--background-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* 节标题 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 模板展示区域 */
.templates-section {
    padding: var(--spacing-3xl) 0;
}

.template-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--border-color);
    background: var(--background);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-light);
    color: white;
    border-color: var(--primary-light);
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

/* 功能特色 */
.features {
    background: var(--background-light);
    padding: var(--spacing-3xl) 0;
}

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

.feature-card {
    background: var(--background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 使用指南 */
.guide {
    padding: var(--spacing-3xl) 0;
}

.guide-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.step-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    max-width: 250px;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    flex-shrink: 0;
}

.step-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.step-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.step-arrow {
    font-size: var(--font-size-2xl);
    color: var(--text-muted);
    font-weight: 300;
}

@media (max-width: 768px) {
    .step-arrow {
        transform: rotate(90deg);
    }
}

/* 页脚 */
.footer {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
}

.link-group h5 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.link-group a {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-base);
}

.link-group a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--background);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-base);
}

.modal-close:hover {
    background: var(--background-light);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
}

.demo-preview {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.demo-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* 卡片动画 */
.template-card {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.template-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* 统计数字动画 */
.stat-number {
    display: inline-block;
    transition: transform 0.3s ease;
}

/* 触摸设备优化 */
.touch-device .template-card:hover {
    transform: none;
}

.touch-device .btn:hover {
    transform: none;
}

/* 页面隐藏时暂停动画 */
.page-hidden * {
    animation-play-state: paused !important;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #666666;
        --primary-color: #000080;
        --primary-light: #0000ff;
    }
    
    .notification {
        border-width: 2px;
    }
    
    .btn {
        border-width: 2px;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .template-card {
        transform: none !important;
        opacity: 1 !important;
    }
    
    .modal-content {
        transform: none !important;
    }
    
    .notification {
        transform: none !important;
    }
}

/* 焦点管理 */
*:focus {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

button:focus,
.btn:focus {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

/* 移动端通知优化 */
@media (max-width: 768px) {
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        transform: translateY(-100%);
        max-width: none;
    }
    
    .notification.show {
        transform: translateY(0);
    }
    
    .quick-form {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .quick-form .form-group {
        min-width: auto;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
    
    .modal-header,
    .modal-body {
        padding: 20px;
    }
}

/* 性能优化：GPU加速 */
.template-card,
.btn,
.modal-content,
.notification {
    will-change: transform;
    transform: translateZ(0);
}

/* 打印样式 */
@media print {
    .navbar,
    .quick-config,
    .modal,
    .notification {
        display: none !important;
    }
    
    .template-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --text-muted: #808080;
        --background: #1a1a1a;
        --background-light: #2d2d2d;
        --background-dark: #0f0f0f;
        --border-color: #404040;
    }
    
    .template-card {
        background: var(--background-light);
        border-color: var(--border-color);
    }
    
    .template-preview {
        background: linear-gradient(135deg, #2d2d2d 0%, #404040 100%);
    }
    
    .modal-content {
        background: var(--background-light);
        color: var(--text-primary);
    }
    
    .quick-form input,
    .quick-form select {
        background: var(--background-light);
        border-color: var(--border-color);
        color: var(--text-primary);
    }
} 

/* 空状态样式 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
    color: var(--text-muted);
}

.empty-state-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-description {
    font-size: var(--font-size-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 400px;
}

.empty-state-action {
    margin-top: var(--spacing-md);
}

/* 错误状态样式 */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    text-align: center;
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border: 1px solid #feb2b2;
    border-radius: var(--radius-xl);
    margin: var(--spacing-xl) 0;
}

.error-state-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-lg);
}

.error-state-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.error-state-description {
    color: #c53030;
    margin-bottom: var(--spacing-lg);
}

.error-state-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

/* 成功反馈样式 */
.success-feedback {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    z-index: 10001;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.success-feedback.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.success-feedback-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
    font-size: 24px;
}

.success-feedback-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.success-feedback-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* 加载骨架屏 */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-card {
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.skeleton-preview {
    height: 200px;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-content {
    padding: var(--spacing-xl);
}

.skeleton-title {
    height: 20px;
    margin-bottom: var(--spacing-sm);
    border-radius: 4px;
}

.skeleton-text {
    height: 14px;
    margin-bottom: var(--spacing-xs);
    border-radius: 4px;
}

.skeleton-text:last-child {
    width: 70%;
}

@keyframes loading {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* 连接状态指示器 */
.connection-status {
    position: fixed;
    bottom: 20px;
    left: 20px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    z-index: 1000;
    transition: all 0.3s ease;
    display: none;
}

.connection-status.offline {
    background: #e74c3c;
    color: white;
    display: block;
}

.connection-status.reconnecting {
    background: #f39c12;
    color: white;
    display: block;
}

/* 工具提示 */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::before,
.tooltip::after {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
    z-index: 1001;
}

.tooltip::before {
    content: attr(data-tooltip);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
}

.tooltip::after {
    content: '';
    border: 5px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
}

.tooltip:hover::before,
.tooltip:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

/* 进度指示器 */
.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--background-light);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    border-radius: 2px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 33%, rgba(255, 255, 255, 0.3) 33%, rgba(255, 255, 255, 0.3) 66%, transparent 66%);
    animation: progress-stripes 1s linear infinite;
}

@keyframes progress-stripes {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 20px 0;
    }
}

/* 搜索建议 */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.search-suggestions.show {
    display: block;
}

.suggestion-item {
    padding: 12px 16px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.suggestion-item:hover,
.suggestion-item.active {
    background: var(--background-light);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-text {
    font-weight: 500;
    color: var(--text-primary);
}

.suggestion-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

/* 滚动到顶部按钮 */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

/* 页面过渡动画 */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
}

.page-transition.show {
    opacity: 1;
    visibility: visible;
}

.page-transition-content {
    text-align: center;
    color: white;
}

.page-transition-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.page-transition-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .empty-state {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .empty-state-icon {
        font-size: 3rem;
    }
    
    .error-state {
        padding: var(--spacing-2xl) var(--spacing-md);
        margin: var(--spacing-lg) 0;
    }
    
    .success-feedback {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-md);
        max-width: calc(100% - 2rem);
    }
    
    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 16px;
    }
    
    .connection-status {
        bottom: 10px;
        left: 10px;
        font-size: 11px;
        padding: 6px 12px;
    }
    
    .tooltip::before {
        font-size: 11px;
        padding: 4px 8px;
    }
}

/* 暗色模式下的状态样式 */
@media (prefers-color-scheme: dark) {
    .empty-state {
        color: var(--text-secondary);
    }
    
    .error-state {
        background: linear-gradient(135deg, #2d1b1b 0%, #3d2222 100%);
        border-color: #e74c3c;
    }
    
    .skeleton {
        background: linear-gradient(90deg, #2d2d2d 25%, #3d3d3d 50%, #2d2d2d 75%);
        background-size: 200% 100%;
    }
    
    .skeleton-preview {
        background: linear-gradient(90deg, #2d2d2d 25%, #3d3d3d 50%, #2d2d2d 75%);
        background-size: 200% 100%;
    }
    
    .search-suggestions {
        background: var(--background-light);
        border-color: var(--border-color);
    }
    
    .success-feedback {
        background: var(--background-light);
    }
}

/* 高对比度模式下的状态样式 */
@media (prefers-contrast: high) {
    .empty-state-icon,
    .error-state-icon {
        opacity: 1;
    }
    
    .tooltip::before {
        background: #000000;
        border: 1px solid #ffffff;
    }
    
    .tooltip::after {
        border-top-color: #000000;
    }
}

/* 减少动画模式下的状态样式 */
@media (prefers-reduced-motion: reduce) {
    .skeleton,
    .skeleton-preview,
    .progress-bar-fill::after {
        animation: none;
    }
    
    .page-transition-spinner {
        animation: none;
        border: 3px solid white;
    }
    
    .success-feedback {
        transform: translate(-50%, -50%) scale(1) !important;
    }
} 

/* 功能特色区域增强 */
.features {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.features::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 60 60"><defs><pattern id="hexagon" width="60" height="60" patternUnits="userSpaceOnUse"><polygon points="30,2 50,17 50,43 30,58 10,43 10,17" fill="none" stroke="rgba(52,152,219,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23hexagon)"/></svg>') repeat;
    opacity: 0.5;
    pointer-events: none;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.badge-icon {
    font-size: var(--font-size-base);
    animation: rotate 3s ease-in-out infinite;
}

@keyframes rotate {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(10deg); }
}

/* 功能展示区域 */
.features-showcase {
    position: relative;
    z-index: 1;
    margin-top: var(--spacing-3xl);
}

.feature-main {
    margin-bottom: var(--spacing-3xl);
    text-align: center;
}

.feature-visual {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.feature-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(45deg, #667eea, #764ba2, #ff6b6b, #ffd700);
    background-size: 400% 400%;
    animation: gradientMove 3s ease infinite;
}

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

.visual-demo {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-xl);
    border: 3px solid #e0e0e0;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.demo-character {
    font-size: 5rem;
    font-weight: 700;
    color: var(--primary-color);
    animation: characterFloat 2s ease-in-out infinite;
}

@keyframes characterFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.demo-stroke-order {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.stroke {
    position: absolute;
    width: 20px;
    height: 3px;
    background: linear-gradient(45deg, #ff6b6b, #ffd700);
    border-radius: 2px;
    opacity: 0;
    animation: strokeAppear 0.5s ease forwards;
    animation-delay: var(--delay);
}

.stroke:nth-child(1) {
    top: 30%;
    left: 25%;
    transform: rotate(45deg);
}

.stroke:nth-child(2) {
    top: 40%;
    right: 25%;
    transform: rotate(-45deg);
}

.stroke:nth-child(3) {
    bottom: 35%;
    left: 30%;
    width: 40px;
    transform: rotate(0deg);
}

.stroke:nth-child(4) {
    bottom: 25%;
    left: 35%;
    width: 30px;
    transform: rotate(90deg);
    height: 20px;
}

@keyframes strokeAppear {
    0% {
        opacity: 0;
        transform: scale(0.5) rotate(var(--rotation, 0deg));
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(var(--rotation, 0deg));
    }
}

.visual-description h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.visual-description p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* 现代化功能卡片 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card.modern {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
    cursor: pointer;
}

.feature-card.modern:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-hover-effect {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: var(--transition-slow);
}

.feature-card.modern:hover .feature-hover-effect {
    left: 100%;
}

.feature-icon-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.feature-icon {
    font-size: var(--font-size-4xl);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.feature-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    opacity: 0.2;
    filter: blur(20px);
    transform: translate(-50%, -50%);
    transition: var(--transition-base);
}

.feature-card.modern:hover .feature-glow {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1.2);
}

.feature-content {
    position: relative;
    z-index: 1;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-base);
}

.feature-stats {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.stat {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

/* 技术展示区域 */
.tech-showcase {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.tech-header {
    margin-bottom: var(--spacing-2xl);
}

.tech-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.tech-subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition-base);
}

.tech-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.tech-icon {
    font-size: var(--font-size-2xl);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    color: white;
    box-shadow: var(--shadow-md);
}

.tech-label {
    font-weight: 600;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

/* 移动端优化 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .feature-visual {
        padding: var(--spacing-2xl);
    }
    
    .demo-character {
        font-size: 4rem;
    }
    
    .visual-demo {
        width: 150px;
        height: 150px;
    }
}

@media (max-width: 768px) {
    .features {
        padding: var(--spacing-2xl) 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .feature-card.modern {
        padding: var(--spacing-xl);
    }
    
    .feature-visual {
        padding: var(--spacing-xl);
        margin-bottom: var(--spacing-xl);
    }
    
    .demo-character {
        font-size: 3rem;
    }
    
    .visual-demo {
        width: 120px;
        height: 120px;
    }
    
    .feature-icon {
        font-size: var(--font-size-3xl);
        width: 60px;
        height: 60px;
    }
    
    .tech-items {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .tech-item {
        padding: var(--spacing-md);
    }
    
    .tech-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 480px) {
    .feature-stats {
        justify-content: center;
    }
    
    .stat {
        font-size: var(--font-size-xs);
        padding: 2px var(--spacing-sm);
    }
    
    .tech-items {
        grid-template-columns: 1fr;
    }
    
    .demo-stroke-order {
        display: none; /* 在小屏幕上隐藏笔顺演示 */
    }
} 

/* 性能优化和无障碍改进 */

/* 页面加载器 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader-text {
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 500;
    opacity: 0.9;
}

/* 跳转链接（无障碍） */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 10001;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: 6px;
}

/* 屏幕阅读器专用 */
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* 减少动画偏好设置 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .float-element,
    .floating-elements {
        display: none !important;
    }
    
    .demo-stroke-order {
        display: none !important;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --background: #ffffff;
        --primary-color: #0066cc;
        --border-color: #666666;
    }
    
    .hero {
        background: #0066cc !important;
    }
    
    .btn {
        border: 2px solid currentColor !important;
    }
}

/* 焦点可见性增强 */
*:focus {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

.btn:focus,
.template-option:focus,
.toolbar-btn:focus {
    outline: 3px solid var(--primary-light);
    outline-offset: 2px;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .feature-card.modern:hover {
        transform: none;
    }
    
    .template-option:hover {
        transform: none;
        border-color: var(--primary-light);
    }
    
    .btn {
        min-height: 44px; /* 触摸目标最小尺寸 */
        min-width: 44px;
    }
}

/* 字体加载优化 */
@font-face {
    font-family: 'Noto Sans SC';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: local('Noto Sans SC Regular'), local('NotoSansSC-Regular');
}

/* 图片懒加载支持 */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --text-muted: #808080;
        --background: #1a1a1a;
        --background-light: #2a2a2a;
        --background-dark: #0a0a0a;
        --border-color: #404040;
    }
    
    .preview-card {
        background: rgba(255, 255, 255, 0.1) !important;
        backdrop-filter: blur(20px);
    }
    
    .quick-form,
    .feature-visual,
    .tech-showcase {
        background: var(--background-light) !important;
        border: 1px solid var(--border-color);
    }
    
    .feature-card.modern {
        background: var(--background-light) !important;
        border-color: var(--border-color);
    }
}

/* 打印样式优化 */
@media print {
    .navbar,
    .hero,
    .quick-config,
    .floating-elements,
    .page-loader {
        display: none !important;
    }
    
    .features,
    .guide {
        break-inside: avoid;
    }
    
    .feature-card {
        break-inside: avoid;
        margin-bottom: 1rem;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
}

/* 性能优化类 */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 现代浏览器优化 */
@supports (backdrop-filter: blur(10px)) {
    .hero-badge,
    .feature-tag,
    .avatar {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

@supports (display: grid) {
    .legacy-flex {
        display: grid;
    }
}

/* 容器查询支持（未来特性） */
@container (min-width: 400px) {
    .feature-card {
        padding: var(--spacing-2xl);
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: var(--radius-md);
}

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

/* Firefox滚动条 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-light) var(--background-light);
}

/* 平滑滚动增强 */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* 选择文本样式 */
::selection {
    background: var(--primary-light);
    color: white;
}

::-moz-selection {
    background: var(--primary-light);
    color: white;
}

/* 工具提示 */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    z-index: 1000;
    margin-bottom: 5px;
}

[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--primary-color);
    z-index: 1000;
}

/* 错误状态样式 */
.error-state {
    color: var(--secondary-color);
    border-color: var(--secondary-color) !important;
}

.error-message {
    color: var(--secondary-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* 成功状态样式 */
.success-state {
    color: var(--success-color);
    border-color: var(--success-color) !important;
}

.success-message {
    color: var(--success-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* 加载状态 */
.loading-state {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading-state::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-light);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 通知系统增强 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-xl);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 10000;
    opacity: 0;
    transform: translateX(100%) translateY(-10px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    pointer-events: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.notification.show {
    opacity: 1;
    transform: translateX(0) translateY(0);
    pointer-events: auto;
}

.notification-info {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.notification-success {
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.notification-warning {
    background: linear-gradient(135deg, #f39c12 0%, #f1c40f 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.notification-error {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 移动端通知优化 */
@media (max-width: 768px) {
    .notification {
        left: 10px;
        right: 10px;
        top: 10px;
        transform: translateY(-100%);
        max-width: none;
    }
    
    .notification.show {
        transform: translateY(0);
    }
}