:root {
    --primary: #1677ff;
    --primary-dark: #0958d9;
    --success: #52c41a;
    --danger: #ff4d4f;
    --warning: #ff4d4f;
    --soldout: #8c8c8c;
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-muted: #fafafa;
    --border: #e5e6eb;
    --text: #333333;
    --text-strong: #000000;
    --text-muted: #666666;
    --radius-lg: 8px;
    --radius-md: 6px;
    --radius-sm: 4px;
    --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.04);
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

a:hover {
    color: var(--primary-dark);
}

.site-aurora {
    display: none;
}

.site-shell {
    width: 100%;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    min-height: 64px;
    padding: 0 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.brand-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.site-header h1 {
    margin: 0;
    color: var(--text-strong);
    font-size: 18px;
    font-weight: 700;
    line-height: 1.2;
}

.eyebrow {
    display: inline-block;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
}

.subtle {
    margin: 0;
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.6;
}

.header-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.frontend-pill,
.user-pill {
    display: inline-flex;
    align-items: center;
    height: 34px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
}

.user-pill {
    color: var(--text);
    font-weight: 600;
}

.header-actions a {
    display: inline-flex;
    align-items: center;
    height: 34px;
    padding: 0 12px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text);
}

.header-actions a:hover {
    background: #f0f5ff;
    color: var(--primary);
}

.messages {
    max-width: 1440px;
    margin: 16px auto 0;
    padding: 0 24px;
}

.message {
    margin-bottom: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
}

.message.success {
    border-color: rgba(82, 196, 26, 0.28);
    color: #389e0d;
}

.page-shell {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px 24px 40px;
}

.top-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.top-nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text-strong);
    font-weight: 600;
}

.top-nav a:hover {
    border-color: #91caff;
    color: var(--primary);
}

.top-nav a.is-active {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
}

.card,
.auth-card,
.upload-card,
.spotlight-card,
.hero-copy,
.result-box,
.inner-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.card {
    padding: 24px;
}

.card + .card,
.card + .hero-panel,
.hero-panel + .card,
.card + section {
    margin-top: 20px;
}

.card.narrow {
    max-width: 560px;
    margin: 0 auto;
}

.inner-panel,
.result-box {
    padding: 20px;
}

.hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: 20px;
}

.single-panel {
    grid-template-columns: 1fr;
}

.hero-copy,
.spotlight-card,
.auth-card,
.upload-card {
    padding: 24px;
}

.auth-panel .hero-copy,
.auth-panel .auth-card {
    min-height: 100%;
}

.hero-copy h2,
.auth-card h3,
.upload-card h2,
.spotlight-card h3,
.page-head h2,
.page-head h3,
.card h2,
.card h3,
.section-heading h3 {
    margin: 0;
    color: var(--text-strong);
    font-size: 18px;
    font-weight: 700;
}

.form-grid {
    display: grid;
    gap: 16px;
    margin-top: 16px;
}

label span {
    display: block;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
}

input,
select,
textarea {
    width: 100%;
    min-height: 40px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text);
    font-size: 14px;
}

textarea {
    min-height: 96px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #91caff;
    box-shadow: 0 0 0 2px rgba(22, 119, 255, 0.12);
}

button,
.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

button:hover,
.button-link:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #ffffff;
}

.secondary-link,
.secondary-button {
    border-color: var(--border);
    background: var(--surface);
    color: var(--text);
}

.secondary-link:hover,
.secondary-button:hover {
    border-color: #91caff;
    background: #f0f5ff;
    color: var(--primary);
}

.page-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.page-head p {
    margin-top: 6px;
}

.section-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.summary-chip {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 12px;
    border: 1px solid #d6e4ff;
    border-radius: 999px;
    background: #f0f5ff;
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    margin-left: auto;
    white-space: nowrap;
}

.search-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
}

.search-row input {
    max-width: 420px;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-muted);
}

.filter-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 12px;
}

.dashboard-intro {
    display: block;
}

.dashboard-intro-copy {
    margin-bottom: 20px;
}

.dashboard-intro-copy .eyebrow {
    margin-bottom: 6px;
}

.dashboard-intro-copy h2 {
    margin-bottom: 8px;
    font-size: 18px;
}

.dashboard-intro-meta {
    display: none;
}

.dashboard-facts {
    display: none;
}

.metric-grid {
    display: grid;
    gap: 16px;
}

.metric-grid-dashboard {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin-bottom: 20px;
}

.metric-grid-dashboard-primary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: stretch;
}

.metric-grid-secondary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-bottom: 20px;
    align-items: stretch;
}

.metric-card {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    min-height: 168px;
    padding: 20px 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}

.metric-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    min-height: 40px;
}

.metric-card-secondary .metric-value {
    font-size: 30px;
}

.auth-facts {
    margin-top: 18px;
}

.login-datetime {
    margin-top: 16px;
    padding: 20px 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}

.login-datetime .metric-label {
    display: block;
    margin-bottom: 10px;
}

.login-datetime .metric-value {
    display: block;
    font-size: 30px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.rank-list {
    display: grid;
    gap: 14px;
}

.rank-row {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(120px, 1fr) auto;
    align-items: center;
    gap: 12px;
}

.rank-copy {
    display: grid;
    gap: 4px;
}

.rank-copy strong {
    color: var(--text-strong);
    font-size: 14px;
}

.rank-copy span {
    color: var(--text-muted);
    font-size: 12px;
}

.rank-track {
    height: 8px;
    border-radius: 999px;
    background: #f0f2f5;
    overflow: hidden;
}

.rank-bar {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: var(--primary);
}

.rank-bar-success {
    background: var(--success);
}

.rank-value {
    min-width: 48px;
    text-align: right;
    color: var(--text-strong);
    font-size: 14px;
}

.empty-inline {
    color: var(--text-muted);
    font-size: 12px;
}

.metric-label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
}

.metric-value {
    display: block;
    color: var(--text-strong);
    font-size: 34px;
    font-weight: 700;
    line-height: 1.1;
}

.metric-footnote {
    display: block;
    margin-top: 8px;
    color: var(--text-muted);
    font-size: 12px;
}

.grid-two {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.progress-panel {
    min-height: 148px;
}

.progress-card {
    display: grid;
    gap: 8px;
}

.progress-card strong {
    color: var(--text-strong);
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.table-card {
    padding-top: 22px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
    background: var(--surface);
}

.data-table th,
.data-table td {
    padding: 0 14px;
    min-height: 48px;
    height: 48px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.data-table th {
    background: #f5f7fa;
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    text-align: left;
    white-space: nowrap;
}

.data-table tbody tr {
    background: var(--surface);
}

.data-table tbody tr:hover {
    background: #f5f7fa;
}

.data-table td:nth-last-child(1),
.data-table th:nth-last-child(1) {
    text-align: center;
}

.data-table td.number,
.data-table th.number {
    text-align: right;
}

.data-table td.center,
.data-table th.center {
    text-align: center;
}

.compact-table {
    margin-top: 8px;
}

.sort-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: inherit;
    font-weight: 700;
}

.sort-link span {
    min-width: 12px;
    color: var(--primary);
}

.sort-link.is-active {
    color: var(--primary);
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px 16px;
}

.detail-grid > div {
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-muted);
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}

.plain-list,
.feature-list {
    margin: 0;
    padding-left: 18px;
}

.feature-list {
    display: grid;
    gap: 10px;
}

.feature-list li {
    color: var(--text);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 4px 12px;
    border-radius: 12px;
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    text-align: center;
}

.status-充足 {
    background: var(--success);
}

.status-紧张 {
    background: var(--danger);
}

.status-售罄 {
    background: var(--soldout);
}

.status-neutral {
    background: #f0f0f0;
    color: #333333;
}

.success-box {
    border-color: rgba(82, 196, 26, 0.28);
}

.warning-box,
.danger-box {
    border-color: rgba(255, 77, 79, 0.24);
}

.upload-layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
}

.upload-dropzone {
    display: grid;
    gap: 12px;
    min-height: 180px;
    align-content: center;
    padding: 20px;
    border: 1px dashed #c7d3e3;
    border-radius: var(--radius-lg);
    background: #fafcff;
}

.upload-dropzone small {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.6;
}

.upload-dropzone input[type="file"] {
    background: var(--surface);
}

.upload-guidance {
    display: grid;
    align-content: start;
    gap: 14px;
}

.upload-note {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-muted);
}

.upload-note strong {
    display: block;
    margin-bottom: 6px;
    color: var(--text-strong);
    font-size: 14px;
}

.shortage-number {
    color: var(--danger);
    font-weight: 700;
}

.trend-chart {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 14px;
    align-items: end;
    min-height: 240px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-muted);
}

.trend-day {
    display: grid;
    justify-items: center;
    gap: 8px;
}

.trend-bars {
    display: flex;
    align-items: end;
    justify-content: center;
    gap: 6px;
    width: 100%;
    height: 150px;
}

.trend-bar {
    width: 18px;
    min-height: 4px;
    border-radius: 6px 6px 0 0;
}

.trend-orders {
    background: var(--primary);
}

.trend-shipped {
    background: var(--success);
}

.trend-resellers {
    background: #91caff;
}

.trend-day strong {
    color: var(--text-strong);
    font-size: 12px;
}

.trend-day span {
    color: var(--text-muted);
    font-size: 12px;
}

@media (max-width: 1200px) {
    .metric-grid-dashboard {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .metric-grid-dashboard-primary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .metric-grid-secondary {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .upload-layout,
    .hero-panel,
    .grid-two {
        grid-template-columns: 1fr;
    }

    .trend-chart {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .site-header,
    .page-head {
        flex-direction: column;
        align-items: flex-start;
    }

    .metric-grid-dashboard {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .metric-grid-dashboard-primary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .metric-grid-secondary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .rank-row {
        grid-template-columns: 1fr;
        justify-items: start;
    }
}

@media (max-width: 640px) {
    .site-header {
        padding: 14px 16px;
    }

    .page-shell,
    .messages {
        padding-left: 16px;
        padding-right: 16px;
    }

    .card,
    .upload-card,
    .spotlight-card,
    .auth-card,
    .hero-copy,
    .inner-panel,
    .result-box {
        padding: 16px;
    }

    .top-nav {
        gap: 8px;
    }

    .top-nav a {
        width: 100%;
        justify-content: flex-start;
    }

    .metric-grid-dashboard {
        grid-template-columns: 1fr;
    }

    .metric-grid-dashboard-primary {
        grid-template-columns: 1fr;
    }

    .metric-grid-secondary {
        grid-template-columns: 1fr;
    }

    .trend-chart {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .data-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}