:root {
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #182230;
    --muted: #667085;
    --line: #e4e7ec;
    --primary: #2563eb;
    --primary-soft: #eff6ff;
    --success: #067647;
    --success-soft: #ecfdf3;
    --danger: #b42318;
    --danger-soft: #fef3f2;
    --shadow: 0 12px 30px rgba(16, 24, 40, .06);
    --radius: 18px;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
    background: #111827;
    color: #fff;
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 12px;
}
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.login-shell { width: 100%; max-width: 460px; }
.login-card,
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.login-card { padding: 28px; }
.login-brand { font-size: 28px; font-weight: 800; margin-bottom: 8px; }
.login-subtitle, .topbar-subtitle, .panel-meta, .help, .login-tip { color: var(--muted); font-size: 14px; }
.login-tip { margin-top: 18px; line-height: 1.7; }
.form-grid { display: grid; gap: 16px; }
.label { display: block; margin-bottom: 8px; font-weight: 700; font-size: 14px; }
.input {
    width: 100%;
    border: 1px solid #d0d5dd;
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 14px;
    background: #fff;
}
.input:focus {
    outline: none;
    border-color: #84adff;
    box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}
.button {
    border: 0;
    border-radius: 12px;
    padding: 12px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.button-primary { background: var(--primary); color: #fff; }
.button-secondary { background: #0f172a; color: #fff; }
.button-light { background: #fff; color: var(--text); border: 1px solid var(--line); }
.button-block { width: 100%; }
.alert {
    border-radius: 14px;
    padding: 12px 14px;
    margin-bottom: 18px;
    font-size: 14px;
    border: 1px solid transparent;
}
.alert-danger { background: var(--danger-soft); color: var(--danger); border-color: #fecdca; }
.alert-success { background: var(--success-soft); color: var(--success); border-color: #abefc6; }
.app-shell { max-width: 1480px; margin: 0 auto; padding: 24px; }
.topbar {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    margin-bottom: 20px;
}
.topbar-title { font-size: 28px; font-weight: 800; margin-bottom: 6px; }
.topbar-right { display: flex; gap: 12px; align-items: center; }
.user-pill {
    padding: 10px 14px; background: #fff; border: 1px solid var(--line);
    border-radius: 999px; font-size: 14px;
}
.layout-grid {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}
.panel { padding: 20px; }
.panel-sticky { position: sticky; top: 16px; }
.panel-title { font-size: 20px; font-weight: 800; margin-bottom: 6px; }
.panel-header {
    display: flex; align-items: flex-start; justify-content: space-between; gap: 16px;
    margin-bottom: 18px;
}
.content-stack { display: grid; gap: 20px; }
.two-col {
    display: grid; gap: 12px; grid-template-columns: 1fr 1fr;
}
.button-stack {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.hint-box, .subpanel {
    margin-top: 18px; border: 1px solid var(--line); border-radius: 14px; padding: 14px;
    background: #fafcff;
}
.hint-title, .subpanel-title { font-weight: 800; margin-bottom: 10px; }
.hint-list { margin: 0; padding-left: 18px; color: var(--muted); line-height: 1.75; }
.stats-wrap { display: flex; gap: 12px; flex-wrap: wrap; }
.stat-card {
    min-width: 90px; padding: 10px 12px; background: var(--primary-soft);
    border: 1px solid #dbeafe; border-radius: 14px;
}
.stat-card span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.stat-card strong { font-size: 24px; }
.table-wrap {
    overflow: auto; border: 1px solid var(--line); border-radius: 16px;
}
.table { width: 100%; border-collapse: collapse; min-width: 980px; }
.table th, .table td {
    text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line);
    font-size: 14px; vertical-align: top;
}
.table th { background: #f8fafc; font-size: 13px; color: var(--muted); position: sticky; top: 0; }
.table tr:hover td { background: #fafcff; }
.badge {
    display: inline-block; padding: 6px 10px; border-radius: 999px;
    background: #f2f4f7; color: #344054; font-size: 12px; font-weight: 700;
}
.badge-success { background: var(--success-soft); color: var(--success); }
.empty { text-align: center; color: var(--muted); padding: 30px 12px !important; }
.error-list { display: grid; gap: 8px; }
.error-item { color: var(--danger); font-size: 14px; }
@media (max-width: 1100px) {
    .layout-grid { grid-template-columns: 1fr; }
    .panel-sticky { position: static; }
}
@media (max-width: 720px) {
    .topbar, .panel-header, .topbar-right { flex-direction: column; align-items: stretch; }
    .two-col, .button-stack { grid-template-columns: 1fr; }
    .app-shell { padding: 16px; }
    .panel, .login-card { padding: 16px; }
}