/* 液态玻璃风格 - 基于Apple的Liquid Glass设计 */
:root {
    /* 基础色彩 */
    --bg-color: #f5f7fa;
    --text-color: #1d1d1f;
    --light-text: #86868b;
    --accent-color: #0071e3;
    --accent-hover: #0077ed;
    --accent-active: #0068d1;
    
    /* 辅助色彩 */
    --primary-gradient: linear-gradient(135deg, #0071e3, #40a0ff);
    --secondary-gradient: linear-gradient(135deg, #5e5ce6, #9e29ff);
    --success-color: #34c759;
    --warning-color: #ff9d0a;
    --danger-color: #ff3b30;
    
    /* 液态玻璃材质 */
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-highlight: rgba(255, 255, 255, 0.8);
    --glass-shadow: rgba(0, 0, 0, 0.05);
    
    /* 效果 */
    --backdrop-blur: 15px;
    --transition: all 0.3s cubic-bezier(0.42, 0, 0.58, 1);
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    
    /* 圆角 */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
    
    /* 容器 */
    --container-padding: 24px;
    --section-spacing: 48px;
}

/* 暗色模式 */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #000000;
        --text-color: #f5f5f7;
        --light-text: #a1a1a6;
        
        --glass-bg: rgba(40, 40, 40, 0.6);
        --glass-border: rgba(255, 255, 255, 0.1);
        --glass-highlight: rgba(255, 255, 255, 0.1);
        --glass-shadow: rgba(0, 0, 0, 0.2);
    }
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 背景格子图案 */
.bg-pattern {
    background-image: linear-gradient(rgba(230, 240, 250, 0.5) 1px, transparent 1px), 
                     linear-gradient(90deg, rgba(230, 240, 250, 0.5) 1px, transparent 1px);
    background-size: 20px 20px;
    background-position: center center;
}

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

/* 液态玻璃卡片 */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--glass-highlight);
    opacity: 0.5;
    z-index: 1;
}

.glass-card:hover {
    box-shadow: var(--shadow-lg);
}

/* 头部导航 */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-sm) 0;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    border-bottom: 1px solid var(--glass-border);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 44px;
}

.logo {
    margin-right: var(--spacing-xl);
}

.logo-link {
    display: block;
    transition: transform 0.3s ease;
    position: relative;
}

.logo-link:hover {
    transform: translateY(-2px);
}

.logo-link:active {
    transform: translateY(1px);
}

.logo-img {
    display: block;
    max-width: 100%;
    height: auto;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
    letter-spacing: -0.02em;
}

/* 导航菜单 */
.header-nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    padding: 6px 10px;
    border-radius: var(--radius-full);
}

.nav-links a:hover {
    color: var(--accent-color);
    background-color: rgba(0, 113, 227, 0.1);
}

.nav-links a.active {
    color: var(--accent-color);
    font-weight: 600;
}

.language-switcher select {
    appearance: none;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--text-color);
    font-size: 0.875rem;
    padding: 8px 32px 8px 16px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2386868b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 12px;
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    transition: var(--transition);
}

.language-switcher select:hover {
    border-color: var(--accent-color);
}

/* 主要内容区域 */
main {
    padding: var(--spacing-xl) 0;
}

/* 主功能区卡片 */
.main-function-card {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.5));
    position: relative;
}

.main-title {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.main-description {
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    color: var(--light-text);
    font-size: 1.1rem;
}

.input-container {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}

/* 增强的输入框呼吸感动画 */
.focus-input {
    width: 100%;
    padding: 18px 24px;
    font-size: 1.1rem;
    text-align: center;
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    animation: breathe 4s ease-in-out infinite;
}

.focus-input::before {
    content: "";
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    z-index: -1;
    opacity: 0.3;
    animation: breathe-glow 4s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        box-shadow: var(--shadow-sm);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 20px rgba(0, 113, 227, 0.3);
    }
}

@keyframes breathe-glow {
    0%, 100% {
        opacity: 0.2;
        filter: blur(5px);
    }
    50% {
        opacity: 0.4;
        filter: blur(8px);
    }
}

.focus-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15), var(--shadow-md);
    transform: scale(1.02);
    animation: none;
}

.focus-input:focus::before {
    animation: none;
    opacity: 0.6;
}

.generate-btn {
    padding: 14px 40px;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    animation: pulse 2s infinite;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #0077ed, #40a0ff);
}

.generate-btn:active {
    transform: translateY(1px);
    box-shadow: var(--shadow-sm);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 113, 227, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 113, 227, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 113, 227, 0);
    }
}

/* 结果布局区域 */
.results-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* 卡片通用样式 */
.results-card,
.collection-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    min-height: 600px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--glass-border);
}

.card-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent-color);
}

.result-count {
    font-size: 0.9rem;
    color: var(--light-text);
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
}

.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.action-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
    background: var(--accent-color);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
}

.action-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.clear-btn {
    background: var(--danger-color);
}

.clear-btn:hover {
    background: #ff4d40;
}

.filter-select {
    flex: 1;
    min-width: 120px;
    padding: 8px 16px;
    padding-right: 32px;
    font-size: 0.9rem;
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2386868b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 12px;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.1);
}

/* 结果容器 - 恢复边框和背景 */
.results-container {
    flex: 1;
    overflow-y: auto;
    min-height: 450px;
    max-height: 600px;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.results-container::-webkit-scrollbar {
    width: 8px;
}

.results-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.results-container::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.results-container::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

.empty-state-message {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    color: var(--light-text);
    font-size: 0.9rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
    border: 1px dashed var(--glass-border);
    margin: var(--spacing-md);
}

/* 关键词项样式 */
.keyword-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.keyword-item:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.keyword-text {
    flex: 1;
    margin-right: var(--spacing-sm);
    font-size: 0.95rem;
}

.keyword-actions {
    display: flex;
    gap: 8px;
}

.keyword-type {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-right: 8px;
}

/* 类型标签颜色 */
.Tool { 
    color: #0071e3; 
    background-color: rgba(0, 113, 227, 0.1); 
}

.List { 
    color: #9e29ff; 
    background-color: rgba(158, 41, 255, 0.1); 
}

.Information { 
    color: #33c151; 
    background-color: rgba(51, 193, 81, 0.1); 
}

.Comparison { 
    color: #ff9d0a; 
    background-color: rgba(255, 157, 10, 0.1); 
}

.Modifier { 
    color: #ff375f; 
    background-color: rgba(255, 55, 95, 0.1); 
}

.Audience { 
    color: #5e5ce6; 
    background-color: rgba(94, 92, 230, 0.1); 
}

.add-to-collection {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    color: var(--light-text);
}

.add-to-collection:hover {
    background: var(--accent-color);
    color: white;
    transform: scale(1.1);
}

.add-to-collection svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.add-to-collection.clicked {
    background: var(--success-color);
    color: white;
    transform: scale(1.1);
}

/* 收集内容区域 - 恢复边框和背景，增加高度 */
.collection-content {
    flex: 1;
    overflow-y: auto;
    min-height: 450px;
    max-height: 600px;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    font-family: "SF Mono", SFMono-Regular, ui-monospace, Menlo, monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.collection-content::-webkit-scrollbar {
    width: 8px;
}

.collection-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.collection-content::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.collection-content::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

.collection-content:empty::before {
    content: attr(data-empty-text);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    color: var(--light-text);
    font-size: 0.9rem;
    text-align: center;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

/* 功能特点部分 */
.features-section {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xxl);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}

.feature-label {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent-color);
}

/* 页脚美化版 */
footer {
    background-color: var(--footer-bg);
    padding: var(--spacing-xl) 0 0;
    color: var(--light-text);
    border-top: 1px solid var(--glass-border);
}

/* 功能特点区域 */
.footer-features {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
}

.footer-features .features-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

.footer-features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.footer-features .feature-card {
    background: transparent;
}

.footer-features .feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-features .feature-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
}

.footer-features .feature-card p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-content {
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--glass-border);
}

.footer-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul a {
    color: var(--light-text);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul a:hover {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--light-text);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.footer-bottom {
    padding: var(--spacing-md) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.85rem;
}

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

.server-status {
    position: relative;
    padding-left: 14px;
}

.server-status::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background-color: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(52, 199, 89, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(52, 199, 89, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 199, 89, 0); }
}

.footer-small {
    padding: var(--spacing-lg) 0;
    background-color: transparent;
    border-top: 1px solid var(--glass-border);
}

.footer-small .footer-bottom-content {
    justify-content: center;
}

/* Toast通知样式 */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-size: 0.9rem;
    color: var(--text-color);
    min-width: 250px;
    max-width: 350px;
    opacity: 0;
    transform: translateX(100%);
    animation: slideInToast 0.3s ease-out forwards;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

@keyframes slideInToast {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 页面标题样式 */
.page-header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--light-text);
    max-width: 800px;
    margin: 0 auto;
}

/* 联系页面布局 */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.contact-info,
.contact-form-section {
    padding: var(--spacing-xl) var(--spacing-lg);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
}

/* 联系方式 */
.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-method:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.contact-details p {
    margin-bottom: var(--spacing-xs);
}

.contact-details a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.contact-details a:hover {
    text-decoration: underline;
}

.contact-details span {
    font-size: 0.9rem;
    color: var(--light-text);
}

/* 联系表单 */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-actions {
    margin-top: var(--spacing-md);
}

.submit-btn {
    padding: 14px 32px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 成功消息 */
.form-success {
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(52, 199, 89, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(52, 199, 89, 0.3);
}

.success-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.form-success h3 {
    font-size: 1.3rem;
    color: var(--success-color);
    margin-bottom: var(--spacing-sm);
}

.form-success p {
    color: var(--light-text);
}

/* 响应式设计增强 */
@media (max-width: 992px) {
    .footer-sections {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .nav-links {
        display: none;
    }
    
    .results-layout {
        grid-template-columns: 1fr;
    }
    
    .results-card,
    .collection-card {
        min-height: 400px;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
        --section-spacing: 32px;
    }
    
    .main-title {
        font-size: 1.8rem;
    }
    
    .main-description {
        font-size: 1rem;
    }
    
    .focus-input {
        font-size: 1rem;
        padding: 14px 20px;
    }
    
    .generate-btn {
        width: 100%;
        padding: 12px 20px;
        font-size: 1rem;
    }
    
    .card-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
    }
    
    .results-container,
    .collection-content {
        min-height: 300px;
        max-height: 400px;
    }
    
    /* Footer响应式 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .features-title {
        font-size: 1.5rem;
    }
    
    .footer-sections {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    /* 联系页面响应式 */
    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .toast-container {
        right: 10px;
        left: 10px;
    }
    
    .toast {
        min-width: auto;
    }
}

/* 关于我们页面 */
.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
}

.about-section {
    margin-bottom: var(--spacing-lg);
}

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

.core-features-section {
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background-color: rgba(255, 255, 255, 0.02);
}

.features-grid-about {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md);
    transition: var(--transition);
    border-radius: var(--radius-lg);
    background-color: rgba(255, 255, 255, 0.05);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--accent-color);
}

.feature-item p {
    color: var(--light-text);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 功能高亮区域 */
.features-highlight {
    background: rgba(0, 113, 227, 0.05);
    padding: var(--spacing-xl) 0;
    margin-left: calc(-1 * var(--spacing-xl));
    margin-right: calc(-1 * var(--spacing-xl));
    border-radius: var(--radius-lg);
}

.features-grid-about {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    padding: 0 var(--spacing-xl);
}

.feature-item-about {
    text-align: center;
}

.feature-icon-about {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.feature-item-about h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: var(--spacing-xs);
}

.feature-item-about p {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 使用步骤 */
.usage-steps {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 700px;
    margin: var(--spacing-lg) auto 0;
}

.usage-steps li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.5);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: left;
    font-size: 1rem;
    color: var(--text-color);
    border: 1px solid var(--glass-border);
}

.usage-steps li span {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary-gradient);
    color: white;
    font-weight: 700;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* CTA区域 */
.cta-section .submit-btn {
    margin-top: var(--spacing-lg);
}

/* 小型页脚 */
.footer-small .footer-bottom {
    background: transparent;
    border-top: none;
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.footer-small .footer-bottom-content {
    justify-content: center;
}

.form-success p {
    color: var(--light-text);
}

/* 工具集页面 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.tool-card {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--glass-border);
}

.tool-card .tool-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.tool-card .tool-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

.tool-card .tool-description {
    color: var(--light-text);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.tool-status {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.available-status {
    background: rgba(52, 199, 89, 0.1);
    color: var(--success-color);
}

.soon-status {
    background: rgba(255, 157, 10, 0.1);
    color: var(--warning-color);
}

.tool-link {
    display: inline-block;
    width: 100%;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    background: var(--accent-color);
    color: white;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.tool-link:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.tool-link.disabled {
    background: var(--glass-bg);
    color: var(--light-text);
    cursor: not-allowed;
    pointer-events: none;
    border: 1px solid var(--glass-border);
}

.tool-link.disabled:hover {
    transform: none;
}

.more-tools {
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.05), rgba(94, 92, 230, 0.05));
    justify-content: center;
}

.subscribe-form {
    display: flex;
    width: 100%;
    margin-top: auto;
}

.subscribe-input {
    flex-grow: 1;
    padding: 12px;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    background: rgba(255, 255, 255, 0.7);
    color: var(--text-color);
    font-size: 0.9rem;
    border-right: none;
}

.subscribe-input:focus {
    outline: none;
    border-color: var(--accent-color);
    background: white;
}

.subscribe-btn {
    padding: 0 16px;
    border: 1px solid var(--accent-color);
    background: var(--accent-color);
    color: white;
    font-weight: 600;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    cursor: pointer;
    transition: var(--transition);
}

.subscribe-btn:hover {
    background: var(--accent-hover);
}

.form-success p {
    color: var(--light-text);
}

/* 如何使用部分 - 更新为单行流程 */
.how-to-use {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
}

.steps-flow-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--spacing-xl);
    flex-wrap: nowrap;
    padding: 0 var(--spacing-sm);
}

.step-item {
    flex: 1;
    min-width: 160px;
    max-width: 220px;
    text-align: center;
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.step-item:hover {
    transform: translateY(-5px) scale(1.03);
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(0, 113, 227, 0.15);
    z-index: 3;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
    position: relative;
    z-index: 2;
    box-shadow: 0 3px 8px rgba(0, 113, 227, 0.3);
}

.step-connector {
    flex: 0 0 auto;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.step-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--accent-color);
}

.step-item p {
    color: var(--light-text);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .steps-flow-container {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .step-connector {
        display: none;
    }
    
    .step-item {
        flex: 0 0 calc(50% - var(--spacing-md));
        max-width: calc(50% - var(--spacing-md));
    }
}

@media (max-width: 768px) {
    .step-item {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* 加入我们部分 */
.join-us-section {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.join-us-section p {
    max-width: 800px;
    margin: var(--spacing-md) auto var(--spacing-lg);
    color: var(--light-text);
    line-height: 1.7;
}

.cta-button {
    display: inline-block;
    padding: 12px 30px;
    background: var(--accent-color);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* 联系表单样式 */
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(0, 113, 227, 0.4);
    border-radius: var(--radius-md);
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input[type="text"]:focus,
.contact-form input[type="email"]:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.2);
    background-color: #ffffff;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder,
.contact-form select option[value=""] {
    color: var(--light-text);
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-actions {
    margin-top: var(--spacing-lg);
    text-align: right;
}

.submit-btn {
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.submit-btn:disabled {
    background-color: var(--light-text);
    cursor: not-allowed;
    transform: none;
}

/* 快速操作卡片 */
.quick-action-card {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    background-color: rgba(0, 113, 227, 0.05);
    border-left: 4px solid var(--accent-color);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.quick-action-icon {
    margin-bottom: var(--spacing-sm);
}

.action-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.quick-action-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--accent-color);
}

.quick-action-desc {
    color: var(--light-text);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* FAQ页面样式 */
.faq-header {
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    text-align: center;
}

.faq-header .page-title {
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
    font-size: 2rem;
    font-weight: 700;
}

.faq-header .page-subtitle {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    color: var(--light-text);
    font-size: 1.1rem;
    line-height: 1.6;
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--light-text);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-input {
    width: 100%;
    padding: 14px 20px 14px 45px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 113, 227, 0.4);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-color);
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
    background-color: #ffffff;
}

.faq-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: var(--spacing-lg);
    justify-content: center;
}

.faq-category {
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-md);
    background-color: var(--color-background-light);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    border: none;
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.faq-category:hover {
    background-color: var(--color-primary-transparent);
    transform: translateY(-2px);
    color: var(--color-primary-dark);
}

.faq-category.active {
    background-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.faq-category.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, rgba(255,255,255,0.2), rgba(255,255,255,0.8), rgba(255,255,255,0.2));
}

.hidden {
    display: none !important;
}

.faq-section {
    margin-bottom: var(--spacing-lg);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.faq-item {
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    opacity: 1;
    transform: translateY(0);
}

.faq-item.hidden {
    display: none !important;
}

.faq-question {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--backdrop-blur));
    -webkit-backdrop-filter: blur(var(--backdrop-blur));
    padding: var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    position: relative;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.7);
}

.faq-question::after {
    content: "+";
    font-size: 1.5rem;
    transition: var(--transition);
}

.faq-item.active .faq-question {
    background-color: rgba(0, 113, 227, 0.1);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.faq-item.active .faq-question::after {
    content: "−";
}

.faq-answer {
    background: rgba(255, 255, 255, 0.5);
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    border-left: 1px solid var(--glass-border);
    border-right: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}

.faq-item.active .faq-answer {
    padding: var(--spacing-md);
    max-height: 1000px;
}

.faq-answer p, .faq-answer ul, .faq-answer ol {
    margin-bottom: var(--spacing-sm);
}

.faq-answer li {
    margin-bottom: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.faq-answer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.faq-answer a:hover {
    text-decoration: underline;
}

.read-more-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 500;
    text-decoration: none;
    padding: 0.3rem 0.8rem;
    margin-top: 0.5rem;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary-transparent);
    transition: var(--transition);
}

.read-more-link:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateX(3px);
}