/* ============================================
   YQYC像素造物工坊 官方样式 (v2 优化版)
   ============================================ */

:root {
    --primary: #1a73e8;
    --primary-dark: #1557b0;
    --primary-darker: #0d47a1;
    --primary-light: #e8f0fe;
    --primary-lighter: #f0f6ff;
    --success: #0d904f;
    --success-light: #e6f4ea;
    --warning: #f9ab00;
    --warning-light: #fef7e0;
    --danger: #d93025;
    --danger-light: #fce8e6;
    --text: #202124;
    --text-light: #5f6368;
    --text-muted: #80868b;
    --bg: #fafbfc;
    --bg-white: #ffffff;
    --bg-soft: #f8f9fa;
    --border: #e0e3e8;
    --border-light: #f1f3f4;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow:    0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 48px rgba(26,115,232,0.15);
    --radius:    8px;
    --radius-sm: 4px;
    --radius-lg: 16px;
    --gradient:  linear-gradient(135deg, var(--primary) 0%, #4285f4 100%);
    --gradient-soft: linear-gradient(135deg, var(--primary-light) 0%, #fff 50%, var(--primary-lighter) 100%);
}

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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Microsoft YaHei', 'PingFang SC',
                 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--primary-dark); text-decoration: underline; }

img { max-width: 100%; display: block; }

/* ===== 布局 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 顶部导航 ===== */
.navbar {
    background: rgba(255,255,255,0.95);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}
.navbar-inner {
    display: flex;
    align-items: center;
    height: 64px;
    gap: 32px;
}
.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
.navbar-brand:hover { text-decoration: none; color: var(--text); }
.navbar-brand .logo {
    width: 32px; height: 32px;
    background: var(--gradient);
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    box-shadow: 0 2px 8px rgba(26,115,232,0.3);
}
.navbar-nav {
    display: flex;
    gap: 4px;
    flex: 1;
    list-style: none;
}
.navbar-nav a {
    color: var(--text-light);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 14px;
    transition: all .15s;
    text-decoration: none;
}
.navbar-nav a:hover, .navbar-nav a.active {
    color: var(--primary);
    background: var(--primary-light);
    text-decoration: none;
}
.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all .15s;
    text-decoration: none;
    text-align: center;
    line-height: 1.4;
    font-family: inherit;
    white-space: nowrap;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 4px rgba(26,115,232,0.25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26,115,232,0.35);
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary-light);
    text-decoration: none;
    transform: translateY(-1px);
}
.btn-ghost {
    background: transparent;
    color: var(--text-light);
    border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-soft); }
.btn-danger {
    background: var(--danger);
    color: #fff;
    box-shadow: 0 2px 4px rgba(217,48,37,0.25);
}
.btn-danger:hover { background: #b71c1c; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-warning { background: #f59e0b; color: #fff; }
.btn-warning:hover { background: #d97706; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-delete { background: #374151; color: #fff; }
.btn-delete:hover { background: #111827; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #0a6d3a; color: #fff; text-decoration: none; }
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 6px; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn-block { display: flex; width: 100%; }

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 100px 0 80px;
    text-align: center;
    background: var(--gradient-soft);
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(26,115,232,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -50%; left: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(66,133,244,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; }
.hero .eyebrow {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}
.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}
.hero .lead {
    font-size: 19px;
    color: var(--text-light);
    max-width: 680px;
    margin: 0 auto 36px;
    line-height: 1.6;
}
.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 56px;
    flex-wrap: wrap;
}
.hero-stat {
    text-align: center;
}
.hero-stat .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
}
.hero-stat .lbl {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 2px;
}

.hero-screenshot {
    max-width: 960px;
    margin: 56px auto 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
}
.hero-screenshot img { width: 100%; display: block; }

/* ===== 通用节区 ===== */
section { position: relative; }
.section-pad { padding: 80px 0; }
.section-pad-sm { padding: 48px 0; }
.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}
.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 17px;
    margin-bottom: 56px;
}

/* ===== 特性卡片 ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.feature-card {
    padding: 32px 28px;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all .25s;
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s;
}
.feature-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
    width: 56px; height: 56px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}
.feature-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.65;
}

/* ===== 下载区（核心：上传服务器用） ===== */
.download-section {
    padding: 80px 0;
    background: linear-gradient(180deg, #fff 0%, var(--bg-soft) 100%);
}
.download-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow);
    max-width: 720px;
    margin: 0 auto;
}
.download-card-head {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-light);
}
.download-card-head .app-icon {
    width: 72px; height: 72px;
    background: var(--gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 32px;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(26,115,232,0.3);
    flex-shrink: 0;
}
.download-card-head .info { flex: 1; }
.download-card-head h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}
.download-card-head .version {
    color: var(--text-light);
    font-size: 14px;
}
.download-card-head .version .new-tag {
    display: inline-block;
    background: var(--success-light);
    color: var(--success);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
}

.platform-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.platform-tab {
    padding: 12px 20px;
    cursor: pointer;
    color: var(--text-light);
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all .15s;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.platform-tab:hover { color: var(--text); }
.platform-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}
.platform-tab .icon { font-size: 18px; }
.platform-tab.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.5;
}
.platform-content { display: none; }
.platform-content.active { display: block; animation: fadeIn .25s; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.download-main {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-soft);
    border-radius: var(--radius);
    margin-bottom: 16px;
}
.download-main .file-icon {
    width: 48px; height: 48px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}
.download-main .file-meta { flex: 1; min-width: 0; }
.download-main .file-name {
    font-weight: 600;
    font-size: 14px;
    word-break: break-all;
}
.download-main .file-info {
    color: var(--text-light);
    font-size: 12px;
    margin-top: 2px;
}
.download-main .file-info span + span::before {
    content: '·';
    margin: 0 6px;
    color: var(--text-muted);
}

.download-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}
.download-actions .btn { min-width: 140px; }

.hash-block {
    margin-top: 16px;
    padding: 12px 16px;
    background: var(--bg-soft);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-light);
    font-family: 'SF Mono', Consolas, Monaco, monospace;
}
.hash-block .hash-label { color: var(--text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.hash-block code {
    color: var(--text);
    word-break: break-all;
    display: block;
    margin-top: 4px;
    user-select: all;
}

.system-requirements {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.system-requirements h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.system-requirements ul {
    list-style: none;
    columns: 2;
    column-gap: 24px;
}
.system-requirements li {
    padding: 4px 0;
    color: var(--text-light);
    font-size: 13px;
}
.system-requirements li strong {
    color: var(--text);
    display: inline-block;
    min-width: 100px;
}

/* ===== 版本历史 ===== */
.version-list {
    margin-top: 48px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}
.version-list h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}
.version-item {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 12px;
    display: flex;
    gap: 16px;
}
.version-item .v-tag {
    background: var(--primary-light);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 700;
    height: fit-content;
    flex-shrink: 0;
}
.version-item .v-body { flex: 1; }
.version-item .v-date {
    color: var(--text-light);
    font-size: 12px;
    margin-bottom: 6px;
}
.version-item .v-notes {
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}
.version-item .v-notes ul {
    list-style: disc;
    margin-left: 20px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ===== 价格表 ===== */
.pricing { padding: 80px 0; background: var(--bg); }
.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}
.price-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all .25s;
    position: relative;
}
.price-card.featured {
    border-color: var(--primary);
    transform: scale(1.03);
    box-shadow: var(--shadow-xl);
    z-index: 1;
}
.price-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px; left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: #fff;
    padding: 4px 16px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(26,115,232,0.3);
}
.price-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}
.price-desc {
    color: var(--text-light);
    font-size: 13px;
    margin-bottom: 20px;
    min-height: 40px;
}
.price-amount {
    font-size: 42px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 4px;
    line-height: 1.1;
}
.price-amount small {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 400;
}
.price-features {
    list-style: none;
    margin: 24px 0;
    text-align: left;
}
.price-features li {
    padding: 10px 0;
    color: var(--text-light);
    font-size: 14px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}
.price-features li:last-child { border-bottom: none; }
.price-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: 700;
}

/* ===== 卡片/表单 ===== */
.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    max-width: 480px;
    margin: 32px auto;
}
.card h2 {
    font-size: 26px;
    margin-bottom: 8px;
    text-align: center;
    font-weight: 700;
}
.card-sub {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 28px;
    font-size: 14px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 8px;
}
.form-control {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: all .15s;
    background: #fff;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.form-control:disabled { background: var(--bg-soft); cursor: not-allowed; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== 提示 ===== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
    display: none;
    border: 1px solid;
}
.alert.show { display: block; animation: slideDown .25s; }
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}
.alert-success { background: var(--success-light); color: #0a6d3a; border-color: #ceead6; }
.alert-error   { background: var(--danger-light); color: #b71c1c; border-color: #fad2cf; }
.alert-warning { background: var(--warning-light); color: #8a6100; border-color: #feefc3; }
.alert-info    { background: var(--primary-light); color: var(--primary-darker); border-color: #d2e3fc; }

/* ===== 表格 ===== */
.table {
    width: 100%;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border-collapse: collapse;
}
.table th, .table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
}
.table th {
    background: var(--bg-soft);
    color: var(--text-light);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover { background: var(--bg-soft); }
.table .actions { white-space: nowrap; text-align: right; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ===== 状态徽章 ===== */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
}
.badge-active   { background: var(--success-light); color: #0a6d3a; }
.badge-unused   { background: #f1f3f4; color: var(--text-light); }
.badge-revoked  { background: var(--danger-light); color: #b71c1c; }
.badge-suspended{ background: var(--warning-light); color: #8a6100; }
.badge-permanent{ background: linear-gradient(135deg, #fbbc04, #f59e0b); color: #fff; }

/* ===== FAQ ===== */
.faq-list {
    max-width: 720px;
    margin: 0 auto;
}
.faq-item {
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all .2s;
}
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-q {
    padding: 18px 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}
.faq-q::after {
    content: '+';
    font-size: 22px;
    color: var(--text-light);
    transition: transform .2s;
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
    transition: all .25s;
}
.faq-item.open .faq-a {
    padding: 0 20px 18px;
    max-height: 500px;
}

/* ===== 页脚 ===== */
.footer {
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 48px 0 20px;
    margin-top: 60px;
    color: var(--text-light);
    font-size: 14px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}
.footer h4 { color: var(--text); font-size: 14px; margin-bottom: 12px; font-weight: 600; }
.footer ul { list-style: none; }
.footer li { padding: 4px 0; }
.footer a { color: var(--text-light); }
.footer a:hover { color: var(--primary); }
.footer-bottom {
    border-top: 1px solid var(--border-light);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
}

/* ===== 加载/通知 ===== */
.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}
.toast {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 18px;
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    max-width: 360px;
    font-size: 14px;
    animation: slideInRight .25s;
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.info    { border-left: 3px solid var(--primary); }
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(20px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .hero { padding: 56px 0 40px; }
    .hero h1 { font-size: 32px; }
    .hero .lead { font-size: 16px; }
    .hero-stats { gap: 24px; margin-top: 32px; }
    .hero-stat .num { font-size: 24px; }
    .section-pad { padding: 56px 0; }
    .section-title { font-size: 26px; }
    .section-subtitle { font-size: 15px; margin-bottom: 32px; }
    .navbar-nav { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .download-card { padding: 28px 20px; }
    .download-card-head { flex-direction: column; text-align: center; }
    .download-card-head .app-icon { margin: 0 auto; }
    .download-main { flex-direction: column; text-align: center; }
    .download-actions { width: 100%; flex-direction: column; }
    .download-actions .btn { width: 100%; }
    .price-card.featured { transform: none; }
    .system-requirements ul { columns: 1; }
    .platform-tabs { gap: 0; overflow-x: auto; flex-wrap: nowrap; }
    .platform-tab { padding: 10px 14px; font-size: 13px; white-space: nowrap; }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-light); }
.text-primary{ color: var(--primary); }
.text-danger { color: var(--danger); }
.text-success{ color: var(--success); }
.text-monospace { font-family: 'SF Mono', Consolas, Monaco, monospace; }
.mt-1 { margin-top: 8px; }  .mt-2 { margin-top: 16px; }  .mt-3 { margin-top: 24px; }  .mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; } .mb-4 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 16px; }
.hidden { display: none; }