/* UI/UX Pro Max Design System - Minimalism & Swiss Style */
/* Typography: Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
    --primary: #0066FF;
    --primary-hover: #0052CC;
    --cta: #00C853;
    --cta-hover: #00A843;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --text-primary: #000000;
    --text-secondary: #666666;
    --border: #E0E0E0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
    --radius: 4px;
    --radius-lg: 8px;
    --spacing: 8px;
    --touch-target: 44px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *:not(.spinner):not(.spinner *) {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background: #f5f7fa;
    min-height: 100vh;
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--spacing) * 2) calc(var(--spacing) * 3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1.5);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
}

.logo svg {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: calc(var(--spacing) * 4);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: calc(var(--spacing) * 1) 0;
    cursor: pointer;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--primary);
}

.nav-link.active {
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary);
}

.nav-link:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--spacing) * 3);
    min-height: calc(100vh - 200px);
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: calc(var(--spacing) * 8) calc(var(--spacing) * 2);
    max-width: 800px;
    margin: 0 auto;
}

/* 域名展示 - 简洁大气版 */
.domain-display {
    margin-bottom: calc(var(--spacing) * 5);
    animation: fadeInUp 1.2s ease-out;
    position: relative;
    padding: calc(var(--spacing) * 3) 0;
}

/* 简洁背景光效 */
.domain-display::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(
        ellipse at center,
        rgba(0, 102, 255, 0.08) 0%,
        rgba(0, 102, 255, 0.04) 50%,
        transparent 100%
    );
    border-radius: 50%;
    z-index: -1;
    animation: gentleGlow 4s ease-in-out infinite;
}

@keyframes gentleGlow {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.domain-text {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 800;
    background: linear-gradient(
        135deg,
        #0066FF 0%,
        #0052CC 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    animation: fadeInScale 1s ease-out;
    filter: drop-shadow(0 2px 8px rgba(0, 102, 255, 0.2));
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 简洁装饰线 */
.domain-text::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(
        90deg, 
        transparent, 
        #0066FF 30%, 
        #0052CC 70%, 
        transparent
    );
    border-radius: 2px;
    animation: lineGlow 3s ease-in-out infinite;
}

@keyframes lineGlow {
    0%, 100% {
        opacity: 0.6;
        transform: translateX(-50%) scaleX(0.8);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1);
    }
}

/* 移除粒子效果容器 */
.domain-display .particles {
    display: none;
}

/* 添加粒子效果容器 */
.domain-display .particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.domain-display .particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, #0066FF, transparent);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.domain-display .particle:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
}

.domain-display .particle:nth-child(2) {
    left: 20%;
    animation-delay: 1s;
}

.domain-display .particle:nth-child(3) {
    left: 80%;
    animation-delay: 2s;
}

.domain-display .particle:nth-child(4) {
    left: 90%;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    50% {
        transform: translateY(-30px) rotate(180deg);
        opacity: 0.8;
    }
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: calc(var(--spacing) * 2);
    line-height: 1.1;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.gradient-text {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: calc(var(--spacing) * 6);
}

/* Search Container */
.search-container {
    max-width: 700px;
    margin: 0 auto calc(var(--spacing) * 4);
    display: flex;
    gap: calc(var(--spacing) * 2);
    align-items: stretch;
}

.search-box-wrapper {
    flex: 1;
    position: relative;
}

.search-box {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    padding: calc(var(--spacing) * 2) calc(var(--spacing) * 3);
    gap: calc(var(--spacing) * 2);
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.search-icon {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1.125rem;
    color: var(--text-primary);
    background: transparent;
    font-family: inherit;
    min-height: var(--touch-target);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: calc(var(--spacing) * 1.4) calc(var(--spacing) * 2.8);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing) * 1);
    transition: var(--transition);
    font-family: inherit;
    flex-shrink: 0;
    white-space: nowrap;
}

.search-btn:hover {
    background: var(--primary-hover);
}

.search-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Suggestions */
.suggestions {
    position: absolute;
    top: calc(100% + calc(var(--spacing) * 1));
    left: 0;
    right: auto;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    max-height: 300px;
    overflow-y: auto;
    display: none;
    z-index: 50;
}

.suggestions.active {
    display: block;
}

.suggestion-item {
    padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 2);
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
    min-height: 40px;
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1);
    font-size: 0.9375rem;
}

.suggestion-item svg {
    flex-shrink: 0;
    color: var(--text-secondary);
}

.suggestion-item span {
    flex: 1;
}

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

.suggestion-item:hover,
.suggestion-item:focus {
    background: var(--bg-secondary);
}

.history-item {
    position: relative;
}

.delete-history {
    background: none;
    border: none;
    padding: calc(var(--spacing) * 0.5);
    cursor: pointer;
    color: var(--text-secondary);
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
}

.history-item:hover .delete-history {
    opacity: 1;
}

.delete-history:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Hot Keywords */
.hot-keywords {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing) * 2);
    flex-wrap: wrap;
    max-width: 700px;
    margin: 0 auto;
}

.hot-label {
    color: var(--text-secondary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1);
}

.hot-label svg {
    color: var(--primary);
}

.hot-list {
    display: flex;
    gap: calc(var(--spacing) * 1.5);
    flex-wrap: wrap;
}

.hot-tag {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    border-radius: calc(var(--radius) * 5);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid var(--border);
    cursor: pointer;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
}

.hot-tag:hover,
.hot-tag:focus {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.hot-tag:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--spacing) * 3);
    margin-top: calc(var(--spacing) * 6);
}

.feature-card {
    background: var(--bg-primary);
    padding: calc(var(--spacing) * 4) calc(var(--spacing) * 3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    margin: 0 auto calc(var(--spacing) * 2);
    color: var(--primary);
    display: flex;
    justify-content: center;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing) * 1);
    color: var(--text-primary);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* SEO优化样式 */
.seo-description {
    text-align: center;
}

.seo-content {
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Result Page */
.back-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 2);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing) * 1);
    min-height: var(--touch-target);
    margin-bottom: calc(var(--spacing) * 2);
}

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

.back-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.back-btn svg {
    flex-shrink: 0;
}

.result-header {
    background: var(--bg-primary);
    padding: calc(var(--spacing) * 3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: calc(var(--spacing) * 3);
}

.search-box-small {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 2);
}

.search-box-small .search-input {
    flex: 1;
    padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
}

.search-btn-small {
    background: var(--primary);
    color: white;
    border: none;
    padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 3);
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    min-height: var(--touch-target);
}

.search-btn-small:hover {
    background: var(--primary-hover);
}

/* Result Info */
.result-info {
    background: var(--bg-primary);
    padding: calc(var(--spacing) * 2) calc(var(--spacing) * 3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: calc(var(--spacing) * 2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: calc(var(--spacing) * 2);
}

/* Filter Bar */
.filter-bar {
    background: var(--bg-primary);
    padding: calc(var(--spacing) * 2) calc(var(--spacing) * 3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: calc(var(--spacing) * 3);
    display: flex;
    flex-wrap: wrap;
    gap: calc(var(--spacing) * 3);
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1);
}

.filter-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-select {
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 3) calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    min-height: var(--touch-target);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23666666' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right calc(var(--spacing) * 1.5) center;
    padding-right: calc(var(--spacing) * 4);
}

.filter-select:hover {
    border-color: var(--primary);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.result-filters {
    display: flex;
    gap: calc(var(--spacing) * 1);
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border);
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-primary);
    font-weight: 500;
    min-height: var(--touch-target);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

/* Loading */
.loading {
    text-align: center;
    padding: calc(var(--spacing) * 8) 0;
    display: none;
}

.loading.active {
    display: block;
}

.loading p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-top: calc(var(--spacing) * 2);
}

.loading .spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto calc(var(--spacing) * 2);
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Result List */
.result-list {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 3);
}

.result-item {
    background: var(--bg-primary);
    padding: calc(var(--spacing) * 3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    gap: calc(var(--spacing) * 2);
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    /* 渲染优化 */
    will-change: transform, opacity;
    contain: layout style paint;
    min-height: 120px;
}

/* 懒加载占位状态 */
.result-item.lazy-loading {
    opacity: 0.3;
    pointer-events: none;
}

.result-item.lazy-loaded {
    animation: fadeInItem 0.3s ease forwards;
}

@keyframes fadeInItem {
    from {
        opacity: 0.3;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.file-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    color: var(--primary);
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-info h3 {
    font-size: 1.125rem;
    margin-bottom: calc(var(--spacing) * 1);
    color: var(--text-primary);
    font-weight: 600;
}

.pan-type {
    display: inline-block;
    background: #f3f4f6;
    color: #4b5563;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-right: 8px;
    vertical-align: middle;
    border: 1px solid #e5e7eb;
}

.file-info h3 mark,
.file-path mark {
    background: transparent;
    color: #EF4444;
    padding: 0;
    border-radius: 0;
    font-weight: 600;
}

.file-path {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: calc(var(--spacing) * 1.5);
    word-break: break-all;
}

.file-meta {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 2);
    flex-wrap: wrap;
}

.file-size {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.file-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.btn-view {
    background: var(--primary);
    color: white;
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    border-radius: var(--radius);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    min-height: var(--touch-target);
    display: inline-flex;
    align-items: center;
}

.btn-view:hover {
    background: var(--primary-hover);
}

.share-pwd {
    background: var(--bg-secondary);
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

/* Pagination - 固定在底部 */
.pagination {
    position: sticky;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: calc(var(--spacing) * 1);
    margin-top: calc(var(--spacing) * 4);
    padding: calc(var(--spacing) * 2) calc(var(--spacing) * 3);
    flex-wrap: wrap;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    z-index: 10;
}

.page-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    min-height: var(--touch-target);
    min-width: var(--touch-target);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.page-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.page-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: calc(var(--spacing) * 8) calc(var(--spacing) * 2);
    display: none;
}

.empty-state.active {
    display: block;
}

.empty-state h3 {
    margin: calc(var(--spacing) * 2) 0 calc(var(--spacing) * 1);
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

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

/* Footer */
.footer {
    background: var(--bg-secondary);
    margin-top: calc(var(--spacing) * 8);
    padding: calc(var(--spacing) * 4);
    border-top: 1px solid var(--border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    flex-wrap: wrap;
    gap: calc(var(--spacing) * 2);
}

.footer-links {
    display: flex;
    gap: calc(var(--spacing) * 3);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing: 6px;
    }
    
    body {
        font-size: 15px;
    }
    
    /* 导航栏 */
    .nav-content {
        padding: calc(var(--spacing) * 2);
        flex-wrap: wrap;
    }
    
    .logo {
        font-size: 1.1rem;
        gap: calc(var(--spacing) * 1.5);
    }
    
    .logo svg {
        width: 28px;
        height: 28px;
    }
    
    .nav-links {
        display: flex;
        width: 100%;
        justify-content: space-around;
        margin-top: calc(var(--spacing) * 2);
        gap: calc(var(--spacing) * 1);
    }
    
    .nav-link {
        font-size: 0.875rem;
        padding: calc(var(--spacing) * 1);
    }
    
    /* Hero 区域 */
    .hero-section {
        padding: calc(var(--spacing) * 4) calc(var(--spacing) * 2);
    }
    
    /* 移动端域名展示 */
    .domain-text {
        font-size: clamp(2rem, 8vw, 3.5rem);
        font-weight: 700;
    }
    
    .domain-display {
        margin-bottom: calc(var(--spacing) * 3);
    }
    
    .hero-title {
        font-size: 1.75rem;
        margin-bottom: calc(var(--spacing) * 2);
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: calc(var(--spacing) * 4);
    }
    
    /* 搜索框 */
    .search-container {
        margin-bottom: calc(var(--spacing) * 3);
        gap: calc(var(--spacing) * 1.5);
    }
    
    .search-box {
        padding: calc(var(--spacing) * 1.5) calc(var(--spacing) * 2);
    }
    
    .search-input {
        font-size: 16px;
        min-height: 44px;
    }
    
    .search-btn {
        padding: calc(var(--spacing) * 1.4) calc(var(--spacing) * 2);
        font-size: 1.125rem;
    }
    
    .search-btn span {
        display: inline;
    }
    
    .search-btn svg {
        width: 16px;
        height: 16px;
    }
    
    /* 搜索建议 */
    .suggestions {
        max-height: 240px;
        background: rgba(255, 255, 255, 0.98);
    }
    
    .suggestion-item {
        padding: calc(var(--spacing) * 1.2) calc(var(--spacing) * 1.5);
        font-size: 0.875rem;
        min-height: 38px;
    }
    
    .suggestion-item svg {
        width: 14px;
        height: 14px;
    }
    
    /* 热门关键词 */
    .hot-keywords {
        flex-direction: column;
        gap: calc(var(--spacing) * 2);
    }
    
    .hot-label {
        font-size: 0.875rem;
    }
    
    .hot-list {
        justify-content: center;
    }
    
    .hot-tag {
        font-size: 0.8125rem;
        padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    }
    
    /* 特性卡片 */
    .features {
        grid-template-columns: repeat(2, 1fr);
        gap: calc(var(--spacing) * 2);
        margin-top: calc(var(--spacing) * 4);
    }
    
    .feature-card {
        padding: calc(var(--spacing) * 3);
    }
    
    .feature-card h3 {
        font-size: 1.125rem;
    }
    
    .feature-card p {
        font-size: 0.875rem;
    }
    
    /* 搜索结果页 */
    .main-content {
        padding: calc(var(--spacing) * 2);
    }
    
    .back-btn {
        padding: calc(var(--spacing) * 1.5);
        font-size: 0.9375rem;
        margin-bottom: calc(var(--spacing) * 2);
    }
    
    .result-header {
        padding: calc(var(--spacing) * 2);
        margin-bottom: calc(var(--spacing) * 2);
    }
    
    .search-box-small {
        flex-direction: column;
        gap: calc(var(--spacing) * 1.5);
    }
    
    .search-box-small .search-input {
        width: 100%;
        padding: calc(var(--spacing) * 1.5);
    }
    
    .search-btn-small {
        width: 100%;
        padding: calc(var(--spacing) * 2);
        min-height: 48px;
    }
    
    /* 结果信息 */
    .result-info {
        padding: calc(var(--spacing) * 2);
        margin-bottom: calc(var(--spacing) * 2);
        flex-direction: column;
        align-items: flex-start;
    }
    
    /* 筛选栏 */
    .filter-bar {
        padding: calc(var(--spacing) * 2);
        margin-bottom: calc(var(--spacing) * 2);
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: calc(var(--spacing) * 2);
    }
    
    .filter-group {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: calc(var(--spacing) * 1);
    }
    
    .filter-label {
        font-size: 0.75rem;
        width: 100%;
    }
    
    .filter-select {
        width: 100%;
        font-size: 0.875rem;
    }
    
    .result-filters {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .filter-btn {
        font-size: 0.8125rem;
        padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
        white-space: nowrap;
    }
    
    /* 结果列表 */
    .result-list {
        gap: calc(var(--spacing) * 1.5);
    }
    
    .result-item {
        padding: calc(var(--spacing) * 1.2);
        flex-direction: row;
        align-items: flex-start;
        gap: calc(var(--spacing) * 1.2);
        min-height: 100px;
        /* 移动端渲染优化 */
        will-change: auto;
        contain: layout style;
    }
    
    .result-item.lazy-loading {
        opacity: 0.5;
    }
    
    .file-icon {
        font-size: 1.5rem;
        flex-shrink: 0;
    }
    
    .file-info {
        width: 100%;
    }
    
    .file-info h3 {
        font-size: 0.875rem;
        margin-bottom: calc(var(--spacing) * 0.5);
        line-height: 1.3;
    }
    
    .pan-type {
        font-size: 0.6875rem;
        padding: 2px 6px;
    }
    
    .file-path {
        font-size: 0.6875rem;
        margin-bottom: calc(var(--spacing) * 0.5);
        line-height: 1.3;
    }
    
    .file-meta {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: calc(var(--spacing) * 0.8);
    }
    
    .file-size,
    .file-date {
        font-size: 0.6875rem;
    }
    
    .file-size::after {
        content: "";
        display: inline-block;
        width: 1px;
        height: 12px;
        background: #e5e7eb;
        margin: 0 8px;
        vertical-align: middle;
    }
    
    .btn-view {
        width: 100%;
        justify-content: center;
        padding: calc(var(--spacing) * 1);
        font-size: 0.8125rem;
    }
    
    .share-pwd {
        font-size: 0.75rem;
        padding: calc(var(--spacing) * 0.8) calc(var(--spacing) * 1.2);
    }
    
    .result-arrow {
        position: absolute;
        right: 16px;
        top: 16px;
    }
    
    /* 分页 */
    .pagination {
        gap: calc(var(--spacing) * 1);
        margin-top: calc(var(--spacing) * 3);
        flex-wrap: wrap;
    }
    
    .page-btn {
        padding: calc(var(--spacing) * 1) calc(var(--spacing) * 1.5);
        font-size: 0.875rem;
        min-width: 40px;
        min-height: 40px;
    }
    
    /* 空状态 */
    .empty-state {
        padding: calc(var(--spacing) * 6) calc(var(--spacing) * 2);
    }
    
    .empty-state h3 {
        font-size: 1.25rem;
    }
    
    .empty-state p {
        font-size: 0.9375rem;
    }
    
    /* 加载动画 */
    .loading .spinner {
        width: 40px;
        height: 40px;
        animation: spin 0.8s linear infinite;
    }
    
    /* 页脚 */
    .footer {
        margin-top: calc(var(--spacing) * 6);
        padding: calc(var(--spacing) * 3);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: calc(var(--spacing) * 2);
        justify-content: center;
        align-items: center;
    }
    
    .footer-links {
        flex-direction: row;
        gap: calc(var(--spacing) * 3);
        justify-content: center;
    }
    
    /* 获取资源弹窗 */
    .conversion-content {
        padding: 36px 24px;
        width: 90%;
        max-width: 240px;
    }
    
    .modal-close-btn {
        width: 28px;
        height: 28px;
        top: 10px;
        right: 10px;
    }
    
    .modal-close-btn svg {
        width: 14px;
        height: 14px;
    }
    
    .conversion-status {
        width: 56px;
        height: 56px;
        margin-bottom: 20px;
    }
    
    .conversion-message {
        font-size: 16px;
    }
    
    .conversion-countdown {
        font-size: 13px;
    }
    
    /* 详情页样式 */
    .detail-card {
        padding: 32px 20px;
        margin: 20px auto;
    }
    
    .file-icon-large {
        width: 100px;
        height: 100px;
        margin-bottom: 24px;
    }
    
    .file-title {
        font-size: 22px;
        margin-bottom: 24px;
    }
    
    .file-meta-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        margin: 24px 0;
    }
    
    .meta-item {
        padding: 16px;
    }
    
    .meta-label {
        font-size: 13px;
    }
    
    .meta-value {
        font-size: 15px;
    }
    
    .btn-primary-large {
        padding: 16px 32px;
        font-size: 16px;
        margin: 24px auto 20px;
    }
    
    .hint-text {
        font-size: 13px;
        padding: 12px;
    }
}


/* 获取资源弹窗样式 */
.conversion-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.conversion-modal.active {
    opacity: 1;
    visibility: visible;
}

.conversion-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 36px 28px;
    text-align: center;
    max-width: 280px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s ease;
    position: relative;
}

.modal-close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
}

.modal-close-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: rotate(90deg);
}

.modal-close-btn svg {
    width: 16px;
    height: 16px;
    stroke: #666;
}

.conversion-modal.active .conversion-content {
    transform: scale(1);
}

.conversion-status {
    width: 60px;
    height: 60px;
    margin: 0 auto 24px;
    position: relative;
}

.conversion-status svg {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.conversion-status.loading .spinner {
    opacity: 1;
}

.conversion-status.success .checkmark {
    opacity: 1;
}

.conversion-status.error .error-icon {
    opacity: 1;
}

/* 加载动画 - 转换弹窗专用 */
.conversion-status .spinner {
    animation: rotate 2s linear infinite;
}

.conversion-status .spinner .path {
    stroke: #0066FF;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

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

@keyframes dash {
    0% {
        stroke-dasharray: 1, 150;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -35;
    }
    100% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -124;
    }
}

/* 成功动画 */
.checkmark-circle {
    stroke: #10B981;
    stroke-width: 2;
    stroke-miterlimit: 10;
    animation: fill 0.4s ease-in-out 0.4s forwards, scale 0.3s ease-in-out 0.9s both;
}

.checkmark-check {
    stroke: #10B981;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.8s forwards;
}

@keyframes stroke {
    100% {
        stroke-dashoffset: 0;
    }
}

@keyframes scale {
    0%, 100% {
        transform: none;
    }
    50% {
        transform: scale3d(1.1, 1.1, 1);
    }
}

@keyframes fill {
    100% {
        box-shadow: inset 0 0 0 30px #10B981;
    }
}

/* 错误动画 */
.error-circle {
    stroke: #EF4444;
    stroke-width: 2;
    stroke-miterlimit: 10;
    animation: fill-error 0.4s ease-in-out 0.4s forwards, scale 0.3s ease-in-out 0.9s both;
}

.error-cross {
    stroke: #EF4444;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 54;
    stroke-dashoffset: 54;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.8s forwards;
}

@keyframes fill-error {
    100% {
        box-shadow: inset 0 0 0 30px #EF4444;
    }
}

.conversion-message {
    font-size: 18px;
    font-weight: 600;
    color: #1F2937;
    margin: 0 0 12px;
}

.conversion-countdown {
    font-size: 14px;
    color: #6B7280;
    margin: 0;
}


/* ==================== 详情页样式 ==================== */

.detail-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 80px;
    min-height: calc(100vh - 200px);
}

.detail-card {
    max-width: 700px;
    margin: 40px auto;
    padding: 56px 48px;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(24px);
    border-radius: 28px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-align: center;
    transition: all 0.3s ease;
}

.detail-card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
}

.file-icon-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    margin: 0 auto 32px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(129, 140, 248, 0.1) 100%);
    border-radius: 24px;
    border: 2px solid rgba(99, 102, 241, 0.2);
}

.file-icon-large svg {
    stroke: #6366F1;
}

.file-title {
    font-size: 32px;
    font-weight: 700;
    color: #1f2937;
    margin: 0 0 32px;
    line-height: 1.3;
    word-break: break-word;
}

.file-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 40px 0;
    text-align: left;
}

.meta-item {
    padding: 20px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.meta-item:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

.meta-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #6b7280;
    margin-bottom: 8px;
}

.meta-label svg {
    stroke: #9ca3af;
}

.meta-value {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: #1f2937;
    word-break: break-all;
}

.btn-primary-large {
    width: 100%;
    max-width: 400px;
    padding: 20px 40px;
    margin: 32px auto 24px;
    font-size: 18px;
    font-weight: 600;
    color: white;
    background: var(--primary);
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.btn-primary-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.4);
    background: var(--primary-hover);
}

.btn-primary-large:active {
    transform: translateY(-1px);
}

.btn-primary-large svg {
    stroke: white;
}

.hint-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    color: #6b7280;
    margin: 0;
    padding: 16px;
    background: rgba(99, 102, 241, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.hint-text svg {
    flex-shrink: 0;
    stroke: #6366F1;
}

/* 搜索结果卡片改为链接样式 */
.result-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none !important;
    color: inherit;
    position: relative;
}

.result-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    background: rgba(255, 255, 255, 0.9);
    text-decoration: none !important;
}

.result-item:visited,
.result-item:active,
.result-item:focus {
    text-decoration: none !important;
    color: inherit;
}

.result-arrow {
    margin-left: auto;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.result-item:hover .result-arrow {
    background: rgba(99, 102, 241, 0.2);
    transform: translateX(4px);
}

.result-arrow svg {
    stroke: #6366F1;
}

/* 移除旧的按钮样式 */
.btn-view {
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .detail-card {
        padding: 40px 24px;
        margin: 24px auto;
    }
    
    .file-title {
        font-size: 24px;
    }
    
    .file-meta-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .btn-primary-large {
        font-size: 16px;
        padding: 18px 32px;
    }
}


/* 求资源弹窗样式 */
.request-modal-content {
    max-width: 500px;
    width: 90%;
    padding: 40px 36px;
    position: relative;
}

.request-modal-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    text-align: center;
}

.request-modal-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0 0 24px 0;
    text-align: center;
    line-height: 1.5;
}

.request-textarea {
    width: 100%;
    min-height: 140px;
    padding: 16px;
    border: 2px solid rgba(0, 102, 255, 0.1);
    border-radius: 12px;
    font-size: 14px;
    font-family: inherit;
    line-height: 1.5;
    resize: vertical;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.request-textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.request-textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.request-modal-actions {
    margin-top: 24px;
    display: flex;
    justify-content: center;
}

.request-modal-actions .btn-primary-large {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, #0052CC 100%);
    border: none;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.request-modal-actions .btn-primary-large:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(0, 102, 255, 0.3);
}

.request-modal-actions .btn-primary-large:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

@media (max-width: 768px) {
    .request-modal-content {
        padding: 32px 24px;
        width: 95%;
    }
    
    .request-modal-title {
        font-size: 20px;
    }
    
    .request-textarea {
        min-height: 120px;
        font-size: 16px;
    }
    
    .request-modal-actions .btn-primary-large {
        font-size: 15px;
        padding: 14px 20px;
    }
}
/* Toast 通知样式 */
.toast-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10001;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 400px;
    min-width: 280px;
}

.toast-notification.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-message {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-primary);
}

/* Toast 类型样式 */
.toast-success {
    border-left: 4px solid #10B981;
}

.toast-success .toast-icon {
    color: #10B981;
}

.toast-error {
    border-left: 4px solid #EF4444;
}

.toast-error .toast-icon {
    color: #EF4444;
}

.toast-info {
    border-left: 4px solid #3B82F6;
}

.toast-info .toast-icon {
    color: #3B82F6;
}

/* 关于页面样式 */
.about-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.about-content {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.about-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.about-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, #0052CC 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin: 0;
}

.about-section {
    margin-bottom: 40px;
}

.about-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.about-section p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature-item {
    background: rgba(255, 255, 255, 0.6);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.feature-item .feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, #0052CC 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.feature-item .feature-icon svg {
    stroke: white;
}

.feature-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.tech-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.tech-list li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 1rem;
    color: var(--text-secondary);
}

.tech-list li:last-child {
    border-bottom: none;
}

.usage-steps {
    margin-top: 30px;
}

.step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, #0052CC 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.125rem;
    margin-right: 20px;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.contact-info {
    margin-top: 20px;
}

.contact-item {
    padding: 20px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 16px;
}

.contact-item strong {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.contact-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .about-page {
        padding: 10px;
    }
    
    .about-content {
        padding: 24px;
    }
    
    .about-header h1 {
        font-size: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin: 0 auto 16px;
    }
    
    .toast-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        min-width: auto;
    }
}