:root {
    --bg: #020617;
    --panel: rgba(15, 23, 42, 0.92);
    --panel-2: rgba(30, 41, 59, 0.76);
    --text: #e2e8f0;
    --muted: #94a3b8;
    --line: rgba(148,163,184,.18);
    --primary: #38bdf8;
    --good: #22c55e;
    --bad: #ef4444;
    --warn: #f59e0b;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
    background: radial-gradient(circle at top left, #0f172a, #020617 60%);
    color: var(--text);
}
a { word-break: break-word; }
canvas { max-width: 100%; }
.login-body { display:flex; align-items:center; justify-content:center; min-height:100vh; padding: 20px; }
.login-wrap { width:min(420px, 100%); }
.login-card { text-align:center; }
.layout { min-height: 100vh; display: flex; align-items: flex-start; }
.sidebar {
    width: 270px;
    background: rgba(2, 6, 23, 0.95);
    border-right: 1px solid var(--line);
    padding: 24px;
    display: block;
    position: sticky;
    top: 0;
    align-self: flex-start;
    max-height: 100vh;
    overflow: hidden;
}
.sidebar-shell {
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: calc(100vh - 48px);
    overflow-y: auto;
    padding-right: 4px;
}
.sidebar-topbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.nav-toggle {
    display: none;
    border: 1px solid rgba(148, 163, 184, 0.28);
    background: rgba(15, 23, 42, 0.92);
    color: var(--text);
    border-radius: 12px;
    min-width: 44px;
    min-height: 44px;
    font-size: 20px;
}
.sidebar h1 { margin: 0 0 8px; font-size: 24px; }
.sidebar p, .sidebar-foot, .mini-user, .hint { color: var(--muted); }
.mini-user { margin-top: 12px; font-size: 13px; }
.nav-link {
    display: block; padding: 12px 14px; margin: 10px 0; border-radius: 12px;
    text-decoration: none; color: var(--text);
}
.nav-link.active, .nav-link:hover { background: rgba(56,189,248,.14); color: #fff; }
.main { flex: 1; padding: 24px; }
.topbar, .section-head, .action-row, .backup-head, .backup-meta, .session-card-head, .session-tags, .role-pills {
    display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.topbar { gap: 18px; margin-bottom: 20px; color: var(--muted); }
.section-head { justify-content: space-between; margin-bottom: 16px; }
.section-head h2, .section-head h3 { margin: 0 0 6px; }
.section-head p { margin: 0; color: var(--muted); }
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 22px;
    margin-bottom: 20px;
    box-shadow: 0 18px 40px rgba(0,0,0,.22);
}
.card.compact { padding: 16px; margin-bottom: 0; }
.card-like, .subcard {
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px;
}
.grid, .detail-stats-grid, .session-grid, .detail-panels { display: grid; gap: 16px; }
.grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.filter-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); align-items: end; gap: 14px; }
.detail-stats-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-bottom: 16px; }
.detail-panels { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.session-grid { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.stat span { display:block; color: var(--muted); margin-bottom: 8px; }
.stat strong { font-size: 22px; }
.health-grid, .provider-list, .note-list, .backup-list { display: grid; gap: 14px; }
.health-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.health-item, .provider-item, .note-item, .backup-item, .message-card, .session-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px;
    background: var(--panel-2);
}
.session-card h3 { margin: 0 0 6px; font-size: 18px; }
.session-card a { color: #fff; text-decoration: none; }
.session-card a:hover { color: var(--primary); }
.session-summary, .summary-block { color: #dbe7f5; line-height: 1.7; }
.session-time-grid {
    display:grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 12px 0 4px;
}
.session-time-grid span { display:block; color: var(--muted); margin-bottom: 6px; }
.session-time-grid strong { font-size: 14px; }
.health-item.ok span { color: #86efac; }
.health-item.bad span { color: #fca5a5; }
.health-item small, .backup-item small, .session-card small { color: var(--muted); display:block; margin-top: 8px; word-break: break-all; }
.table-wrap { overflow: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { width: 180px; color: #cbd5e1; }
.form { display: grid; gap: 14px; }
.inline-form { display:flex; gap: 12px; flex-wrap:wrap; align-items:center; margin-top: 14px; }
.form label { display: grid; gap: 8px; color: #cbd5e1; }
input[type=text], input[type=password], textarea, select {
    width: 100%; background: rgba(15,23,42,.95); color: var(--text); border: 1px solid var(--line);
    border-radius: 12px; padding: 12px 14px;
}
.checkbox { display:flex !important; align-items:center; gap: 10px; }
.btn { display:inline-flex; align-items:center; justify-content:center; background: var(--primary); border: 0; color: #082f49; font-weight: 700; border-radius: 12px; padding: 12px 16px; cursor: pointer; text-decoration:none; }
.btn.small { padding: 8px 12px; font-size: 13px; }
.btn.secondary { background: rgba(148,163,184,.18); color: var(--text); }
.btn.danger { background: var(--bad); color: white; }
.alert { border-radius: 14px; padding: 14px 16px; margin-bottom: 18px; border: 1px solid var(--line); }
.alert.success { background: rgba(34,197,94,.12); color: #bbf7d0; }
.alert.error { background: rgba(239,68,68,.12); color: #fecaca; }
.note-head, .message-meta { display:flex; justify-content:space-between; gap: 16px; flex-wrap:wrap; }
.note-item h4, .provider-item h4 { margin: 0 0 8px; }
.note-item time, .cell-title + small, .message-meta span { color: var(--muted); }
.log-box, .bubble-text {
    background: #020617; border: 1px solid var(--line); border-radius: 14px; padding: 14px; overflow: auto; max-height: 70vh; color: #cbd5e1;
    white-space: pre-wrap; word-break: break-word;
}
.bubble-text {
    background: transparent;
    border: 0;
    padding: 0;
    margin: 0;
    max-height: none;
}
.bubble-highlightable mark {
    background: rgba(250, 204, 21, 0.35);
    color: #fff7cc;
    padding: 0 2px;
    border-radius: 4px;
}
.message-box { max-height: 360px; }
.code-area { font-family: ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; min-height: 560px; }
.role-user { border-left: 4px solid #38bdf8; }
.role-assistant { border-left: 4px solid #22c55e; }
.role-tool { border-left: 4px solid #f59e0b; }
.role-system { border-left: 4px solid #a78bfa; }
.cell-title { font-weight: 700; margin-bottom: 6px; }
.pagination { display:flex; gap:12px; align-items:center; margin-top:16px; flex-wrap:wrap; }
.pill {
    display:inline-flex; align-items:center; justify-content:center; padding: 6px 10px; border-radius: 999px;
    background: rgba(56,189,248,.14); color: #dff6ff; border: 1px solid rgba(56,189,248,.18); font-size: 12px;
}
.pill.secondary { background: rgba(148,163,184,.14); color: #d9e2ec; border-color: rgba(148,163,184,.16); }
.chat-thread { display:grid; gap: 18px; }
.chat-row { display:flex; gap: 14px; align-items:flex-start; }
.chat-row.role-assistant, .chat-row.role-tool { flex-direction: row-reverse; }
.chat-avatar {
    width: 42px; height: 42px; border-radius: 50%; display:flex; align-items:center; justify-content:center; font-weight: 800;
    background: rgba(148,163,184,.18); color: #fff; border: 1px solid var(--line); flex: 0 0 42px;
}
.chat-bubble-wrap { max-width: min(900px, calc(100% - 56px)); }
.chat-bubble {
    border-radius: 18px; padding: 16px; border: 1px solid var(--line); background: rgba(15,23,42,.92);
    box-shadow: 0 10px 24px rgba(0,0,0,.16);
}
.chat-row.role-user .chat-bubble { background: rgba(56,189,248,.14); }
.chat-row.role-assistant .chat-bubble { background: rgba(34,197,94,.14); }
.chat-row.role-system .chat-bubble { background: rgba(167,139,250,.14); }
.chat-row.role-tool .chat-bubble { background: rgba(245,158,11,.14); }
.tool-detail { margin-top: 10px; }
.tool-detail summary, details summary { cursor: pointer; color: #cfe9ff; }
.backup-diff-box { border: 1px solid rgba(56,189,248,.22); border-radius: 16px; padding: 18px; margin-bottom: 16px; background: rgba(8,47,73,.22); }
.diff-box { font-family: ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; }
.split-actions { justify-content: space-between; }
.export-hint { color: var(--muted); font-size: 13px; }
.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    color: #7dd3fc;
    font-size: 12px;
    letter-spacing: .12em;
    text-transform: uppercase;
    font-weight: 700;
}
.section-kicker::before {
    content: '';
    width: 22px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, #38bdf8, #22d3ee);
}
.glass-card {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.92), rgba(2, 6, 23, 0.88));
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: 0 22px 48px rgba(2, 6, 23, 0.34);
}
.hero-banner {
    overflow: hidden;
    position: relative;
}
.hero-banner::after {
    content: '';
    position: absolute;
    inset: auto -10% -45% auto;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(56,189,248,.16), rgba(56,189,248,0));
    pointer-events: none;
}
.hero-progress-rail {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 18px;
}
.hero-progress-rail span {
    position: relative;
    padding: 9px 14px;
    border-radius: 999px;
    border: 1px solid rgba(125,211,252,.18);
    background: rgba(15,23,42,.62);
    color: #dbeafe;
    font-size: 13px;
    font-weight: 600;
}
.hero-progress-rail span.is-active {
    background: linear-gradient(90deg, rgba(14,165,233,.28), rgba(34,211,238,.18));
    border-color: rgba(56,189,248,.36);
}
.cta-cluster { display:flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.sessions-hero { align-items: flex-start; }
.sessions-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.96fr) minmax(320px, 1.04fr);
    gap: 20px;
    align-items: start;
}
.sessions-layout-premium {
    position: relative;
    overflow: hidden;
}
.sessions-layout-premium::before {
    content: '';
    position: absolute;
    inset: 16px 34% 16px auto;
    width: 1px;
    background: linear-gradient(180deg, rgba(56,189,248,.02), rgba(56,189,248,.18), rgba(56,189,248,.02));
    pointer-events: none;
}
.sessions-list-panel,
.sessions-detail-panel {
    min-width: 0;
}
.sessions-list-panel {
    position: relative;
}
.sessions-list-panel::after {
    content: 'PRIMARY';
    position: absolute;
    top: -8px;
    right: 0;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(56,189,248,.12);
    border: 1px solid rgba(56,189,248,.24);
    color: #7dd3fc;
    font-size: 11px;
    letter-spacing: .12em;
    font-weight: 700;
}
@media (min-width: 901px) {
    .sessions-detail-panel {
        position: sticky;
        top: 24px;
        align-self: start;
        max-height: calc(100vh - 48px);
        overflow-y: auto;
        padding-right: 4px;
    }
}
.detail-panel-shell {
    display: grid;
    gap: 16px;
}
.sticky-filter-summary-bar {
    position: sticky;
    top: 0;
    z-index: 8;
    display: flex;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 16px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid rgba(56,189,248,.18);
    background: rgba(2,6,23,.9);
    box-shadow: 0 14px 32px rgba(2,6,23,.22);
    backdrop-filter: blur(10px);
}
.sticky-filter-summary-main {
    display: grid;
    gap: 8px;
    min-width: min(100%, 520px);
}
.sticky-filter-chip-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.sticky-filter-summary-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.usage-sticky-summary-bar {
    position: sticky;
    top: 0;
    z-index: 8;
    display: flex;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin: 14px 0 18px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid rgba(34,211,238,.18);
    background: rgba(2,6,23,.88);
    box-shadow: 0 14px 32px rgba(2,6,23,.2);
    backdrop-filter: blur(10px);
}
.usage-sticky-summary-main {
    display: grid;
    gap: 8px;
    min-width: min(100%, 520px);
}
.usage-sticky-summary-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.usage-chart-toolbar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
}
.usage-toggle-group {
    display: inline-flex;
    gap: 6px;
    padding: 4px;
    border-radius: 999px;
    border: 1px solid rgba(148,163,184,.14);
    background: rgba(15,23,42,.68);
}
.usage-toggle {
    border: 0;
    background: transparent;
    color: #cbd5e1;
    border-radius: 999px;
    padding: 8px 12px;
    font-weight: 700;
    cursor: pointer;
}
.usage-toggle.is-active {
    background: linear-gradient(135deg, rgba(14,165,233,.34), rgba(34,211,238,.2));
    color: #fff;
}
.session-grid-single {
    grid-template-columns: 1fr;
}
.session-grid-two-up {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}
.session-card.active {
    border-color: rgba(56,189,248,.45);
    box-shadow: 0 0 0 1px rgba(56,189,248,.22), 0 18px 34px rgba(2,132,199,.16);
}
.detail-panel-placeholder,
.detail-spotlight-premium,
.messages-shell-premium {
    position: relative;
    overflow: hidden;
}
.detail-spotlight-premium {
    border: 1px solid rgba(34,211,238,.22);
    box-shadow: 0 22px 48px rgba(8,47,73,.24);
}
.detail-quick-actions-bar {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(148,163,184,.12);
}
.detail-quick-actions-title {
    display: grid;
    gap: 8px;
}
.detail-quick-actions-title strong {
    font-size: 16px;
    color: #fff;
    word-break: break-all;
}
.detail-quick-actions-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.messages-shell-premium {
    border: 1px solid rgba(148,163,184,.14);
    box-shadow: 0 18px 42px rgba(2,6,23,.24);
}
.panel-head-primary,
.panel-head-secondary {
    position: relative;
}
.panel-head-primary::after,
.panel-head-secondary::after {
    position: absolute;
    top: 0;
    right: 0;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    letter-spacing: .12em;
    font-weight: 700;
}
.panel-head-primary::after {
    content: 'LIST';
    background: rgba(56,189,248,.12);
    border: 1px solid rgba(56,189,248,.24);
    color: #7dd3fc;
}
.panel-head-secondary::after {
    content: 'DETAIL';
    background: rgba(34,197,94,.12);
    border: 1px solid rgba(34,197,94,.2);
    color: #86efac;
}
.session-card-premium {
    background: linear-gradient(180deg, rgba(15,23,42,.8), rgba(15,23,42,.56));
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.session-card-premium:hover {
    transform: translateY(-2px);
    border-color: rgba(56,189,248,.28);
    box-shadow: 0 18px 34px rgba(2,132,199,.14);
}
.compact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
.inline-form-tight {
    margin-top: 12px;
}
.empty-state {
    min-height: 260px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.messages-shell {
    margin-top: 16px;
}
.compact-table th {
    width: 120px;
}
.sticky-mobile-cta {
    position: relative;
}
.chart-card {
    position: relative;
    min-height: 280px;
    padding: 8px;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(15,23,42,.72), rgba(2,6,23,.92));
    border: 1px solid rgba(148,163,184,.16);
}
.usage-summary-grid .stat strong {
    font-size: 24px;
}
.usage-table td strong {
    color: #fff;
}
.usage-highlight-grid {
    display:grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}
.highlight-panel h3,
.metric-chip strong,
.stat-premium strong,
.stat-spotlight strong {
    font-size: 26px;
    color: #fff;
}
.mini-stats-grid {
    margin-bottom: 16px;
}
.metric-chip {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 100px;
}
.metric-chip span {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.detail-spotlight {
    background: linear-gradient(180deg, rgba(15,23,42,.84), rgba(7,89,133,.18));
}
.fancy-empty-state {
    border: 1px dashed rgba(125,211,252,.24);
    background: linear-gradient(180deg, rgba(15,23,42,.58), rgba(2,6,23,.72));
}
.small-empty-state {
    min-height: 180px;
}
.chart-card-large {
    min-height: 340px;
}
.chart-legend-inline {
    display:flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items:center;
    color: #cbd5e1;
    font-size: 13px;
}
.dot {
    display:inline-block;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    margin-right: 6px;
}
.dot-blue { background:#60a5fa; }
.dot-cyan { background:#22d3ee; }
.dot-violet { background:#a78bfa; }
.dot-amber { background:#f59e0b; }
.dot-rose { background:#f43f5e; }
.table-wrap-premium {
    border-radius: 16px;
    overflow: auto;
    border: 1px solid rgba(148,163,184,.12);
}
.session-tags-bottom {
    margin-top: 12px;
}
.metric-inline {
    display: inline-flex;
    align-items: center;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(30,41,59,.78);
    color: #dbeafe;
    font-size: 12px;
    border: 1px solid rgba(148,163,184,.14);
}
.pagination-premium {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid rgba(148,163,184,.12);
}
.pagination-premium-rich {
    display: grid;
    gap: 14px;
}
.pagination-summary {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.pagination-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}
.pagination-numbers {
    display: inline-flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}
.page-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    border-radius: 12px;
    border: 1px solid rgba(148,163,184,.18);
    background: rgba(15,23,42,.72);
    color: #e2e8f0;
    text-decoration: none;
    font-weight: 700;
}
.page-pill:hover {
    border-color: rgba(56,189,248,.4);
    color: #fff;
}
.page-pill.is-active {
    background: linear-gradient(135deg, rgba(14,165,233,.34), rgba(34,211,238,.26));
    border-color: rgba(56,189,248,.48);
    color: #fff;
}
.page-ellipsis {
    color: var(--muted);
    padding: 0 2px;
}
.btn.is-disabled {
    opacity: .45;
    pointer-events: none;
}
.inline-actions-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 14px;
}
.cta-cluster-wrap {
    flex-wrap: wrap;
}
.danger-preview-card {
    border: 1px solid rgba(239, 68, 68, .18);
    box-shadow: 0 20px 50px rgba(239, 68, 68, .08);
}
.audit-card {
    border: 1px solid rgba(245, 158, 11, .18);
    box-shadow: 0 20px 50px rgba(245, 158, 11, .08);
}
.delete-preview-shell {
    display: grid;
    gap: 16px;
}
.preview-id-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.danger-text {
    color: #fca5a5;
}
.danger-inline-form {
    margin: 0;
}
.top-gap {
    margin-top: 16px;
}
.feature-accordion {
    display:grid;
    gap: 12px;
}
.accordion-item {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(15,23,42,.62);
    overflow: hidden;
}
.accordion-item summary {
    list-style: none;
    cursor: pointer;
    padding: 14px 16px;
    font-weight: 700;
}
.accordion-item summary::-webkit-details-marker { display:none; }
.accordion-body {
    padding: 0 16px 16px;
    color: #dbe7f5;
}
@media (max-width: 900px) {
    .layout { flex-direction: column; }
    .sidebar {
        width: 100%;
        padding: 18px 16px;
        position: sticky;
        top: 0;
        z-index: 20;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }
    .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
    .sidebar nav {
        display: none;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        margin-top: 12px;
    }
    .sidebar nav.is-open { display: grid; }
    .nav-link {
        margin: 0;
        text-align: center;
        padding: 10px 12px;
        font-size: 14px;
    }
    .main { padding: 16px; }
    .card { padding: 16px; border-radius: 16px; }
    .table th { width: 120px; }
    .note-head, .message-meta, .section-head, .backup-head { flex-direction: column; align-items:flex-start; }
    .inline-form, .action-row, .backup-meta, .session-tags, .split-actions { align-items:flex-start; }
    .chat-row, .chat-row.role-assistant, .chat-row.role-tool { flex-direction: column; }
    .chat-bubble-wrap { max-width: 100%; }
    .code-area { min-height: 360px; }
    .sessions-layout { grid-template-columns: 1fr; }
    .hero-progress-rail {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
    }
}

@media (min-width: 901px) {
    .sidebar nav {
        display: block !important;
    }
}

@media (max-width: 640px) {
    body { font-size: 14px; }
    .sidebar h1 { font-size: 20px; }
    .sidebar nav { grid-template-columns: 1fr; }
    .topbar { gap: 10px; margin-bottom: 16px; font-size: 13px; }
    .grid, .detail-stats-grid, .session-grid, .detail-panels, .health-grid, .filter-grid, .usage-summary-grid {
        grid-template-columns: 1fr;
    }
    .table, .table tbody, .table tr, .table th, .table td {
        display: block;
        width: 100%;
    }
    .table tr {
        padding: 10px 0;
        border-bottom: 1px solid var(--line);
    }
    .table th, .table td {
        padding: 6px 0;
        border-bottom: 0;
    }
    .table th { color: var(--muted); }
    .btn, .btn.small {
        width: 100%;
        min-height: 44px;
    }
    .action-row, .inline-form, .split-actions, .backup-meta {
        width: 100%;
    }
    .pill { max-width: 100%; }
    .chat-avatar { width: 36px; height: 36px; flex-basis: 36px; }
    .message-box, .log-box { max-height: 50vh; }
    .code-area { min-height: 280px; }
    .chart-card { height: 300px; }
    .session-time-grid,
    .compact-grid {
        grid-template-columns: 1fr;
    }
    .pagination-premium-rich {
        position: sticky;
        bottom: 12px;
        z-index: 20;
        margin-top: 20px;
        padding: 12px;
        border-radius: 16px;
        border: 1px solid rgba(148,163,184,.18);
        background: linear-gradient(180deg, rgba(2,6,23,.96), rgba(15,23,42,.94));
        box-shadow: 0 18px 36px rgba(2,6,23,.36);
    }
    .pagination-summary {
        justify-content: space-between;
    }
    .sticky-filter-summary-bar {
        top: 8px;
        padding: 12px;
    }
    .usage-sticky-summary-bar {
        top: 8px;
        padding: 12px;
    }
    .sticky-filter-summary-actions,
    .detail-quick-actions-buttons,
    .usage-sticky-summary-actions {
        width: 100%;
    }
    .sticky-filter-summary-actions .btn,
    .detail-quick-actions-buttons .btn,
    .usage-sticky-summary-actions .btn {
        width: 100%;
    }
    .pagination-summary strong {
        width: 100%;
    }
    .pagination-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
    }
    .usage-chart-toolbar {
        width: 100%;
        justify-content: flex-start;
    }
    .usage-toggle-group {
        width: 100%;
        justify-content: space-between;
    }
    .usage-toggle {
        flex: 1 1 0;
        text-align: center;
    }
    .pagination-actions > .btn,
    .pagination-actions > .is-disabled {
        width: 100%;
    }
    .pagination-numbers {
        grid-column: 1 / -1;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 4px;
        scrollbar-width: thin;
    }
    .page-pill {
        flex: 0 0 auto;
        min-width: 36px;
        height: 36px;
        padding: 0 10px;
    }
    .mobile-sticky-bar {
        position: sticky;
        bottom: 10px;
        z-index: 12;
        padding: 12px;
        border-radius: 16px;
        background: rgba(2, 6, 23, 0.92);
        border: 1px solid rgba(56,189,248,.18);
        box-shadow: 0 14px 28px rgba(0,0,0,.28);
    }
    .sessions-hero,
    .cta-cluster {
        width: 100%;
    }
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.skill-card-premium {
    display: grid;
    gap: 14px;
    border: 1px solid rgba(56, 189, 248, 0.16);
    box-shadow: 0 16px 36px rgba(2, 6, 23, 0.22);
}

.skill-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.skill-card-top h4 {
    margin: 10px 0 0;
    font-size: 18px;
}

.skill-category-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    color: #c4f1ff;
    background: rgba(56, 189, 248, 0.14);
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.skill-summary {
    margin: 0;
    color: #dbe7f5;
    line-height: 1.7;
}

.skill-meta-list {
    display: grid;
    gap: 8px;
    color: var(--muted);
    font-size: 14px;
}

.skill-path-box {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}

.skill-path-box code {
    display: block;
    margin-top: 10px;
    padding: 12px;
    border-radius: 12px;
    background: rgba(2, 6, 23, 0.86);
    color: #dbeafe;
    word-break: break-all;
}

.skills-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.95fr);
    gap: 18px;
    align-items: start;
}

.skills-detail-panel {
    position: sticky;
    top: 24px;
}

.skill-detail-box {
    max-height: 70vh;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.skill-linked-files {
    display: grid;
    gap: 12px;
}

.skill-linked-group {
    display: grid;
    gap: 8px;
}

.skill-linked-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-linked-pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.18);
    color: #dbeafe;
    font-size: 12px;
}

@media (max-width: 980px) {
    .skills-layout {
        grid-template-columns: 1fr;
    }

    .skills-detail-panel {
        position: static;
    }
}