/* ========== 2025商业级镜像站样式 ========== */

:root {
    /* 主色调 */
    --primary-bg: #ffffff;
    --secondary-bg: #f8f9fa;
    --dark-bg: #0f1419;
    --card-bg: #ffffff;

    /* 文字颜色 */
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --text-white: #ffffff;

    /* 边框和分割线 */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;

    /* 强调色 */
    --accent-blue: #0066ff;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.15);

    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========== 顶部导航 ========== */
.navbar {
    background: var(--primary-bg);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: all var(--transition-base);
}

.nav-brand:hover {
    transform: translateY(-2px);
}

.logo-container {
    display: flex;
    align-items: baseline;
    gap: 2px;
    font-family: 'Monaco', 'Consolas', monospace;
    font-weight: 700;
}

.logo-text {
    font-size: 24px;
    color: var(--accent-blue);
    letter-spacing: -0.5px;
}

.logo-year {
    font-size: 18px;
    color: var(--accent-green);
    font-weight: 800;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 搜索框 */
.search-box {
    position: relative;
    margin-right: 20px;
}

.search-input {
    width: 260px;
    padding: 10px 42px 10px 16px;
    border: 2px solid var(--border-light);
    border-radius: 24px;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--secondary-bg);
    color: var(--text-primary);
    font-weight: 500;
}

.search-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.search-input:hover {
    background: var(--bg-primary);
    border-color: var(--border-strong);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.12);
    width: 320px;
    background: var(--bg-primary);
}

.search-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    pointer-events: none;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.search-input:focus + .search-icon {
    opacity: 0.8;
}

/* 搜索结果下拉框 */
.search-results {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 2px solid var(--accent-blue);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1000;
}

.search-results.show {
    display: block;
    animation: fadeIn 0.2s ease;
}

.search-result-item {
    padding: 12px 16px;
    cursor: pointer;
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--border-light);
}

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

.search-result-item:hover {
    background: var(--secondary-bg);
}

.search-result-icon {
    font-size: 20px;
    margin-right: 12px;
}

.search-result-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.search-result-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.search-no-results {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.search-hint {
    padding: 12px 16px;
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-light);
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-hint-icon {
    font-size: 16px;
}

.nav-link {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    font-weight: 500;
}

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

.nav-link.active {
    color: var(--accent-blue);
    background: rgba(0, 102, 255, 0.1);
}

/* ========== 主内容区 ========== */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

.section {
    display: none;
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.section.active {
    display: block;
}

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

/* ========== Hero 区域 ========== */
.hero {
    text-align: center;
    padding: 60px 0;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, #1a1a1a 0%, #4a4a4a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========== 区块头部 ========== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

.subsection-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

/* ========== 分类卡片网格 ========== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.category-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-blue);
}

.category-card:active {
    transform: translateY(-4px);
}

.card-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--secondary-bg);
    color: var(--text-secondary);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    padding: 16px 20px;
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    font-size: 14px;
}

.breadcrumb-item {
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.breadcrumb-item:hover {
    color: var(--accent-blue);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
}

.breadcrumb-separator {
    color: var(--text-muted);
}

/* ========== 工具网格 ========== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.tool-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.tool-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.tool-card.selected {
    border-color: var(--accent-blue);
    background: rgba(0, 102, 255, 0.05);
}

.tool-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.tool-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ========== 镜像源网格 ========== */
.mirror-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.mirror-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 24px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.mirror-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.mirror-card.selected {
    border-color: var(--accent-blue);
    background: rgba(0, 102, 255, 0.05);
}

.mirror-card.fastest::before {
    content: "⚡ 最快";
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--accent-green);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.mirror-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.mirror-latency {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    min-height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mirror-latency .latency-text {
    display: inline-block;
}

.mirror-latency.fast {
    color: var(--accent-green);
    font-weight: 600;
}

.mirror-card .note {
    font-size: 13px;
    color: var(--accent-orange);
    background: rgba(245, 158, 11, 0.1);
    padding: 6px 10px;
    border-radius: 6px;
    margin-top: 8px;
}

/* ========== 系统版本选择 ========== */
.os-version-section {
    margin-bottom: 40px;
}

.option-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.option-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.option-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-sm);
}

.option-card.selected {
    border-color: var(--accent-blue);
    background: rgba(0, 102, 255, 0.05);
    font-weight: 600;
}

/* ========== 标签页导航 ========== */
.tabs-nav {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-light);
    padding-bottom: 0;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 600;
    position: relative;
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: var(--secondary-bg);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
    background: var(--secondary-bg);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab-icon {
    font-size: 20px;
}

.tab-title {
    font-weight: 600;
}

.tab-badge {
    background: var(--accent-blue);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

/* ========== 标签页内容 ========== */
.tabs-content {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    min-height: 300px;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-panel.active {
    display: block;
}

.tab-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

/* ========== 手风琴样式 ========== */
.accordion-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.accordion-item {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.accordion-item:hover {
    border-color: var(--border-medium);
}

.accordion-item.expanded {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    cursor: pointer;
    background: var(--primary-bg);
    transition: background var(--transition-fast);
}

.accordion-header:hover {
    background: var(--secondary-bg);
}

.accordion-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.accordion-icon {
    font-size: 24px;
}

.accordion-badge {
    background: var(--accent-blue);
    color: white;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.accordion-toggle {
    font-size: 28px;
    font-weight: 300;
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
}

.accordion-item.expanded .accordion-toggle {
    transform: rotate(180deg);
}

.accordion-content {
    display: none;
    padding: 0 24px 24px 24px;
    background: var(--secondary-bg);
}

.accordion-item.expanded .accordion-content {
    display: block;
    animation: slideDown 0.3s ease;
}

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

.accordion-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

/* ========== 切换按钮样式 ========== */
.btn-switch-ui {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--secondary-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-switch-ui:hover {
    border-color: var(--accent-blue);
    background: var(--primary-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* ========== 代码框 ========== */
.code-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--dark-bg);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 16px;
    position: relative;
}

.code-box code {
    flex: 1;
    color: #e6edf3;
    font-family: "SF Mono", "Monaco", "Cascadia Mono", monospace;
    font-size: 13px;
    word-break: break-all;
}

.btn-copy {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 18px;
}

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

.result-note {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.result-note a {
    color: var(--accent-blue);
    text-decoration: none;
}

.result-note a:hover {
    text-decoration: underline;
}

/* ========== 手动步骤 ========== */
.manual-steps {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 20px;
    font-family: "SF Mono", Monaco, monospace;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-primary);
}

.manual-steps code {
    background: var(--dark-bg);
    color: #e6edf3;
    padding: 2px 8px;
    border-radius: 4px;
}

/* ========== 下载信息 ========== */
.download-info {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 20px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-label {
    color: var(--text-secondary);
}

.info-value {
    color: var(--text-primary);
    font-weight: 600;
    font-family: monospace;
}

/* ========== 使用提示 ========== */
.result-tips {
    background: var(--secondary-bg);
    border-left: 4px solid var(--accent-blue);
    border-radius: var(--radius-md);
    padding: 24px;
}

.result-tips h4 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.result-tips ul {
    list-style: none;
    padding: 0;
}

.result-tips li {
    padding-left: 24px;
    margin-bottom: 12px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.result-tips li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: 600;
}

.result-tips code {
    background: var(--dark-bg);
    color: #e6edf3;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 13px;
}

.result-tips a {
    color: var(--accent-blue);
    text-decoration: none;
}

.result-tips a:hover {
    text-decoration: underline;
}

/* ========== 按钮样式 ========== */
.btn-primary,
.btn-secondary,
.btn-speed-test {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    justify-content: center;
}

.btn-primary {
    background: var(--accent-blue);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #0052cc;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    color: var(--text-primary);
    border: 2px solid var(--border-medium);
    text-decoration: none;
    width: auto;
    min-width: 180px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-speed-test {
    background: var(--accent-green);
    color: white;
}

.btn-speed-test:hover {
    background: #059669;
    box-shadow: var(--shadow-md);
}

/* 小型测速按钮 */
.btn-speed-test-mini {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-speed-test-mini:hover {
    border-color: var(--accent-green);
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.btn-speed-test-mini:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--dark-bg);
    color: var(--text-white);
    padding: 60px 0 24px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 16px;
    color: white;
}

.footer-section a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 12px;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .section-title {
        font-size: 28px;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }

    .result-grid {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        gap: 4px;
    }

    .nav-link {
        padding: 6px 12px;
        font-size: 14px;
    }
}


/* ========== 教程页面样式 ========== */
.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.tutorial-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--transition-base);
    cursor: pointer;
}

.tutorial-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-blue);
}

.tutorial-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.tutorial-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.tutorial-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.tutorial-meta {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.tutorial-tag {
    background: var(--secondary-bg);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.tutorial-date {
    color: var(--text-muted);
    font-size: 12px;
    margin-left: auto;
}

/* ========== 监控页面样式 ========== */
.monitor-intro {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 40px;
}

.monitor-intro h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.monitor-intro ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.monitor-intro li {
    padding: 8px 0;
    font-size: 15px;
    color: var(--text-secondary);
}

.monitor-note {
    margin-top: 20px;
    padding: 16px;
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--accent-green);
    border-radius: 4px;
    font-size: 14px;
    color: var(--text-primary);
}

.monitor-status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.status-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all var(--transition-base);
}

.status-card:hover {
    box-shadow: var(--shadow-md);
}

.status-card.status-online {
    border-left: 4px solid var(--accent-green);
}

.status-card.status-warning {
    border-left: 4px solid var(--accent-orange);
}

.status-card.status-offline {
    border-left: 4px solid var(--accent-red);
}

.status-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.status-icon {
    font-size: 24px;
}

.status-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.status-metrics {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.metric-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ========== 关于页面样式 ========== */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-section {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 24px;
}

.about-section h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-section p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-section ul {
    padding-left: 24px;
    margin: 16px 0;
}

.about-section li {
    margin-bottom: 12px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.api-example {
    background: var(--dark-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    margin: 20px 0;
}

.api-example h4 {
    color: #e6edf3;
    font-size: 16px;
    margin-bottom: 12px;
    font-weight: 600;
}

.api-example pre {
    margin: 0 0 24px 0;
    overflow-x: auto;
}

.api-example:last-child pre {
    margin-bottom: 0;
}

.api-example code {
    color: #e6edf3;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 13px;
    line-height: 1.6;
}

.api-note {
    font-size: 14px !important;
    color: var(--text-muted) !important;
}

.api-note a {
    color: var(--accent-blue);
    text-decoration: none;
}

.api-note a:hover {
    text-decoration: underline;
}

/* ========== 新增：紧凑型工具卡片 ========== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.tool-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform var(--transition-base);
}

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

.tool-card-compact {
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all var(--transition-base);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.tool-card-compact:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
}

.tool-icon-small {
    font-size: 32px;
    flex-shrink: 0;
}

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

.tool-name-small {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.tool-desc-small {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========== 优化：标签页间距 ========== */
.tabs-nav {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: 24px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    bottom: -2px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(0, 102, 255, 0.05);
}

.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.tab-icon {
    font-size: 18px;
}

.tab-title {
    font-size: 15px;
}

.tab-badge {
    background: var(--accent-orange);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* ========== 优化：下载选项间距 ========== */
.download-info {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin: 16px 0 20px 0;
}

.info-row {
    display: flex;
    align-items: center;
    padding: 8px 0;
}

.info-row:not(:last-child) {
    border-bottom: 1px solid var(--border-light);
}

.info-label {
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 80px;
    font-size: 14px;
}

.info-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
}

/* ========== 系统版本选择网格（APT/YUM页面） ========== */
.os-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.os-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 24px;
    transition: all var(--transition-base);
}

.os-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.os-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-light);
}

.mirror-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mirror-link {
    display: block;
    padding: 10px 16px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition-base);
    text-align: center;
}

.mirror-link:hover {
    background: var(--primary-bg);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

/* ========== 响应式优化 ========== */
@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 12px;
    }

    .tool-card-compact {
        padding: 12px;
    }

    .tool-icon-small {
        font-size: 28px;
    }

    .tool-name-small {
        font-size: 14px;
    }

    .tool-desc-small {
        font-size: 12px;
    }

    .tabs-nav {
        gap: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
        white-space: nowrap;
    }

    .os-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .os-card {
        padding: 20px;
    }
}

/* ========== 配置文件预览样式 ========== */
.config-file-preview {
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: 20px 0;
    border: 1px solid var(--border-light);
}

.config-file-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--dark-bg);
    border-bottom: 1px solid var(--border-medium);
}

.config-file-name {
    color: var(--text-white);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 14px;
    font-weight: 500;
}

.btn-copy-small {
    padding: 6px 12px;
    font-size: 13px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

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

.btn-copy-small:active {
    transform: scale(0.95);
}

.config-file-content {
    padding: 16px;
    background: #1e1e1e;
    color: #d4d4d4;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre;
    margin: 0;
}

.config-file-content::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.config-file-content::-webkit-scrollbar-track {
    background: #2d2d2d;
}

.config-file-content::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 4px;
}

.config-file-content::-webkit-scrollbar-thumb:hover {
    background: #666;
}

.config-file-info {
    padding: 16px;
    background: white;
}

.config-file-info p {
    margin: 8px 0;
    font-size: 14px;
    color: var(--text-primary);
}

.config-file-info strong {
    color: var(--text-primary);
    font-weight: 600;
}

.config-file-note {
    color: var(--text-secondary);
    font-size: 13px;
    font-style: italic;
}

#configFilePath {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    background: var(--secondary-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .config-file-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .config-file-content {
        font-size: 12px;
        max-height: 300px;
    }

    .btn-copy-small {
        align-self: flex-end;
    }
}


/* ========== 进度条样式 ========== */
.progress-container {
    max-width: 800px;
    margin: 30px auto;
    padding: 0 20px;
}

.progress-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 0 0 auto;
}

.progress-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--secondary-bg);
    border: 3px solid var(--border-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.progress-step.active .progress-circle {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

.progress-step.completed .progress-circle {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: white;
}

.progress-label {
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.progress-step.active .progress-label {
    color: var(--accent-blue);
    font-weight: 600;
}

.progress-line {
    flex: 1;
    height: 3px;
    background: var(--border-light);
    margin: 0 10px;
    position: relative;
    top: -20px;
}

/* ========== 快速配置区域 ========== */
.quick-config-section {
    margin: 48px 0 60px 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ========== 一键脚本快捷入口 (宝塔风格) ========== */
.quick-script-banner {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 24px 28px;
    margin-bottom: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.quick-content {
    flex: 1;
}

.quick-content h3 {
    font-size: 18px;
    margin-bottom: 6px;
    color: #1a1a1a;
    font-weight: 600;
}

.quick-content p {
    font-size: 14px;
    color: #666;
    margin: 0 0 16px 0;
}

.script-command-box {
    position: relative;
    background: #1e1e1e;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 16px 80px 16px 16px;
    margin-bottom: 12px;
}

.script-command {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 14px;
    color: #52c41a;
    line-height: 1.6;
    word-break: break-all;
    user-select: all;
}

.btn-copy-script {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    padding: 6px 16px;
    background: #52c41a;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-copy-script:hover {
    background: #73d13d;
}

.btn-copy-script:active {
    transform: translateY(-50%) scale(0.95);
}

.script-help-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #1890ff;
    text-decoration: none;
    transition: color 0.2s;
}

.script-help-link:hover {
    color: #40a9ff;
    text-decoration: underline;
}

/* ========== 复制成功提示弹窗 ========== */
.copy-toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #52c41a;
    color: white;
    padding: 12px 24px;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    font-size: 14px;
    font-weight: 500;
    z-index: 9999;
    display: none;
    align-items: center;
    gap: 8px;
    animation: slideDown 0.3s ease;
}

.copy-toast.show {
    display: flex;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.copy-toast-icon {
    font-size: 16px;
}

/* ========== 系统镜像选择器 ========== */
.os-selector-container {
    margin-bottom: 40px;
}

.os-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.os-category-card {
    background: var(--card-bg);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.os-category-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.os-category-card.active {
    border-color: var(--accent-blue);
    background: rgba(0, 102, 255, 0.05);
}

.os-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
}

.os-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.os-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

.os-version-panel {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-top: 24px;
    animation: fadeIn 0.3s ease;
}

.os-version-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-light);
}

.os-version-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.os-version-item {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: all var(--transition-base);
}

.os-version-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-blue);
}

.os-version-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.os-mirror-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mirror-link-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--secondary-bg);
    border-radius: 6px;
    font-size: 14px;
}

.mirror-link-item a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
}

.mirror-link-item a:hover {
    text-decoration: underline;
}

/* ========== 批量配置样式 (宝塔风格) ========== */
.batch-config-banner {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 24px 28px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.batch-content {
    flex: 1;
}

.batch-content h3 {
    font-size: 18px;
    margin-bottom: 6px;
    color: #1a1a1a;
    font-weight: 600;
}

.batch-content p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.btn-batch {
    padding: 10px 24px;
    background: #1890ff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.btn-batch:hover {
    background: #40a9ff;
}

.btn-batch:active {
    transform: scale(0.95);
}

/* ========== 弹窗样式 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    overflow-y: auto;
}

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

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    padding: 24px 30px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 24px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 32px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--secondary-bg);
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.preset-section,
.custom-section,
.mirror-select-section {
    margin-bottom: 30px;
}

.preset-section h3,
.custom-section h3,
.mirror-select-section h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.preset-card {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.preset-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.preset-card:hover {
    border-color: #3b82f6;
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(59, 130, 246, 0.15);
}

.preset-card:hover::before {
    transform: scaleX(1);
}

.preset-card.selected {
    background: #eff6ff;
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.preset-card.selected::before {
    transform: scaleX(1);
}

.preset-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
    transition: transform 0.3s ease;
}

.preset-card:hover .preset-icon {
    transform: scale(1.1);
}

.preset-title {
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 8px;
}

.preset-tools {
    font-size: 14px;
    color: #6b7280;
}

.tools-checklist {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.tool-checkbox {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--secondary-bg);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.tool-checkbox:hover {
    background: #e8eaf0;
}

.tool-checkbox input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.batch-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 16px;
    background: white;
    cursor: pointer;
    transition: var(--transition-fast);
}

.batch-select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* ========== 系统镜像下载工具 ========== */
.iso-download-section {
    margin-top: 40px;
    padding: 30px;
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
}

.iso-download-section h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.download-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.download-tool-card {
    background: white;
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.download-tool-card h4 {
    font-size: 18px;
    margin-bottom: 14px;
    color: var(--text-primary);
}

.download-tool-card ul {
    list-style: none;
    margin-bottom: 14px;
}

.download-tool-card li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.download-tool-card code {
    display: block;
    background: #f5f5f5;
    padding: 10px;
    border-radius: 6px;
    font-size: 13px;
    overflow-x: auto;
}

.tool-link {
    display: inline-block;
    padding: 8px 16px;
    background: var(--accent-blue);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: var(--transition-fast);
}

.tool-link:hover {
    background: #0052cc;
}

/* 响应式 */
@media (max-width: 768px) {
    .progress-steps {
        position: relative;
    }
    
    .progress-circle {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .progress-label {
        font-size: 12px;
    }
    
    .batch-config-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .preset-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .tools-checklist {
        grid-template-columns: 1fr;
    }
    
    .download-tools-grid {
        grid-template-columns: 1fr;
    }
}