:root {
    --bg: #07111f;
    --panel: #0f1c2d;
    --panel-soft: #13253b;
    --border: #214166;
    --text: #e6efff;
    --muted: #8da4c4;
    --accent: #6ee7b7;
    --accent-2: #60a5fa;
    --warn: #fbbf24;
    --danger: #fca5a5;
    --radius: 14px;
    --mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    line-height: 1.55;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(96, 165, 250, 0.16), transparent 32%),
        radial-gradient(circle at top right, rgba(110, 231, 183, 0.12), transparent 28%),
        var(--bg);
    min-height: 100vh;
}

a { color: var(--accent-2); }
button { font: inherit; }

.topbar { border-bottom: 1px solid var(--border); background: rgba(7, 17, 31, 0.85); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(8px); }
.topbar-inner { max-width: 1240px; margin: 0 auto; padding: 12px 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.brand { font-weight: 700; letter-spacing: 0.02em; white-space: nowrap; }
.topbar nav { display: flex; gap: 4px; flex-wrap: wrap; }
.topbar nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: 14px; }
.topbar nav a:hover { color: var(--text); background: var(--panel-soft); }
.topbar nav a[aria-current="page"] { color: var(--text); background: var(--panel-soft); }

.page { max-width: 1240px; margin: 0 auto; padding: 32px 16px 48px; }
section { margin-bottom: 48px; }

.eyebrow { color: var(--accent); font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 8px; }
h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.1; margin: 0 0 14px; letter-spacing: -0.02em; }
.lede { color: var(--muted); max-width: 760px; font-size: 17px; margin: 0 0 24px; }
.section-title { font-size: 22px; margin: 0 0 8px; letter-spacing: -0.01em; }
.section-copy { color: var(--muted); max-width: 760px; margin: 0 0 18px; }

.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0; }
.kpi { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.kpi dt { color: var(--muted); font-size: 13px; }
.kpi dd { margin: 4px 0 0; font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.kpi dd small { font-size: 13px; color: var(--muted); font-weight: 500; margin-left: 4px; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.steps li { display: flex; gap: 12px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.steps p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.step-n { flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--panel-soft); color: var(--accent); font-family: var(--mono); font-size: 13px; border: 1px solid var(--border); }

.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; }
.mode-toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; margin-bottom: 18px; }
.mode-toggle button { background: transparent; color: var(--muted); border: 0; padding: 7px 16px; cursor: pointer; }
.mode-toggle button[aria-pressed="true"] { background: var(--panel-soft); color: var(--text); }

.map-layout { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.map-frame { position: relative; height: min(64vh, 620px); min-height: 380px; background: radial-gradient(circle at 50% 45%, #0e2036, #060e1a 75%); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; touch-action: none; }
.map-frame canvas { display: block; width: 100%; height: 100%; }
.map-frame.is-2d { touch-action: auto; }
.map-placeholder { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 14px; }
.tooltip { position: absolute; pointer-events: none; max-width: 300px; background: rgba(15, 28, 45, 0.96); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 12.5px; line-height: 1.45; z-index: 2; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4); }
.tooltip strong { display: block; font-size: 13px; margin-bottom: 2px; }
.tooltip .tt-meta { color: var(--muted); font-size: 11.5px; margin-bottom: 6px; }

.legend { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--muted); }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; display: inline-block; }
.honesty { margin: 12px 0 0; padding: 12px 14px; border-left: 3px solid var(--warn); background: rgba(251, 191, 36, 0.06); border-radius: 0 10px 10px 0; color: #d9e3f3; font-size: 13.5px; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.panel-label { margin: 0 0 10px; color: var(--muted); font-size: 12px; font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.05em; }
.questions { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.q-btn { text-align: left; background: var(--panel-soft); color: var(--text); border: 1px solid transparent; border-radius: 10px; padding: 9px 12px; cursor: pointer; font-size: 14px; line-height: 1.35; }
.q-btn:hover { border-color: var(--border); }
.q-btn[aria-pressed="true"] { border-color: var(--accent); background: rgba(110, 231, 183, 0.08); }
.q-btn:focus-visible, .mode-toggle button:focus-visible, .src summary:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.answer h3 { font-size: 15px; margin: 0 0 6px; }
.answer-text { margin: 0 0 12px; font-size: 14.5px; }
.cite { font-family: var(--mono); font-size: 11.5px; color: var(--accent); }
.subhead { margin: 16px 0 8px; font-size: 12px; color: var(--muted); font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.05em; display: flex; justify-content: space-between; gap: 8px; }
.claims { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.claim { font-size: 13px; padding: 8px 10px; border-radius: 8px; background: var(--panel-soft); border-left: 3px solid var(--muted); }
.claim.ok { border-left-color: var(--accent); }
.claim.no { border-left-color: var(--warn); }
.claim .claim-meta { display: block; margin-top: 4px; color: var(--muted); font-size: 11.5px; font-family: var(--mono); }
.sources { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.src { background: var(--panel-soft); border-radius: 8px; font-size: 13px; }
.src summary { list-style: none; cursor: pointer; padding: 8px 10px; display: flex; gap: 8px; align-items: baseline; }
.src summary::-webkit-details-marker { display: none; }
.src .rank { font-family: var(--mono); color: var(--accent); flex: none; }
.src .src-title { flex: 1; min-width: 0; }
.src .sim { font-family: var(--mono); color: var(--muted); font-size: 11.5px; flex: none; }
.src p { margin: 0; padding: 0 10px 10px; color: #cbd8ec; font-size: 12.5px; }
.control { margin-top: 14px; font-size: 13px; }
.control summary { cursor: pointer; color: var(--muted); }
.control p { color: #cbd8ec; }
.badge { font-family: var(--mono); font-size: 11.5px; padding: 1px 7px; border-radius: 999px; background: var(--panel-soft); border: 1px solid var(--border); color: var(--text); white-space: nowrap; }

.eval-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.card h3 { margin: 0 0 4px; font-size: 16px; }
.card .card-note { color: var(--muted); font-size: 12.5px; margin: 0 0 14px; }
.card .card-foot { color: var(--muted); font-size: 12.5px; margin: 14px 0 0; }
.bars { display: flex; flex-direction: column; gap: 10px; }
.bar-group-label { font-size: 13px; display: flex; justify-content: space-between; gap: 8px; margin-bottom: 4px; }
.bar-group-label .tag { font-family: var(--mono); font-size: 11px; color: var(--accent); }
.bar-row { display: grid; grid-template-columns: 64px 1fr 46px; gap: 8px; align-items: center; font-size: 12px; color: var(--muted); }
.bar-track { height: 8px; background: var(--panel-soft); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; }
.bar-val { font-family: var(--mono); color: var(--text); text-align: right; font-variant-numeric: tabular-nums; }
.key { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.key span { display: inline-flex; align-items: center; gap: 5px; }
.key i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

.method-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.method-grid .card ul { margin: 0; padding-left: 18px; color: #cbd8ec; font-size: 14px; }
.method-grid .card li { margin-bottom: 6px; }

.footer { max-width: 1240px; margin: 0 auto; padding: 20px 16px 40px; color: var(--muted); font-size: 12.5px; border-top: 1px solid var(--border); }

@media (max-width: 960px) {
    .map-layout, .eval-grid, .method-grid { grid-template-columns: 1fr; }
    .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
    .topbar nav a { padding: 6px 7px; font-size: 13px; }
    .steps { grid-template-columns: 1fr; }
    .map-frame { height: auto; min-height: 0; aspect-ratio: 1 / 1; }
    .kpi dd { font-size: 22px; }
    .page { padding-top: 24px; }
}

@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto !important; transition: none !important; }
}

/* ── Visual layer shared by /rag and /case-study ─────────────────────────── */
body::before {
    content: ""; position: fixed; inset: -20%; z-index: -1; pointer-events: none;
    background:
        radial-gradient(40% 35% at 20% 20%, rgba(96, 165, 250, 0.18), transparent 70%),
        radial-gradient(35% 30% at 80% 10%, rgba(110, 231, 183, 0.14), transparent 70%),
        radial-gradient(30% 30% at 60% 80%, rgba(192, 132, 252, 0.10), transparent 70%);
    animation: aurora 24s ease-in-out infinite alternate;
}
@keyframes aurora { to { transform: translate3d(4%, 3%, 0) rotate(6deg) scale(1.05); } }
.hero h1 { background: linear-gradient(120deg, #e6efff 25%, #6ee7b7 60%, #60a5fa); -webkit-background-clip: text; background-clip: text; color: transparent; }
.kpi, .card, .panel, .steps li, .map-frame {
    background: linear-gradient(160deg, rgba(19, 37, 59, 0.78), rgba(15, 28, 45, 0.9));
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 18px 40px -24px rgba(0, 0, 0, 0.7);
}
.kpi, .card, .steps li { transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease; }
.kpi:hover, .card:hover, .steps li:hover { transform: translateY(-2px); border-color: #2f5f93; box-shadow: 0 0 0 1px rgba(96, 165, 250, 0.15), 0 22px 44px -22px rgba(96, 165, 250, 0.35); }
.kpi dd { font-size: 30px; letter-spacing: -0.02em; }
.section-title { font-size: 26px; }
.section-title::before { content: ""; display: inline-block; width: 10px; height: 10px; margin-right: 10px; border-radius: 3px; background: linear-gradient(135deg, #6ee7b7, #60a5fa); vertical-align: middle; }
.q-btn { transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.q-btn:hover { transform: translateX(3px); }
.map-frame { box-shadow: 0 0 0 1px rgba(96, 165, 250, 0.12), 0 30px 60px -30px rgba(56, 189, 248, 0.35); }
@media (prefers-reduced-motion: reduce) { body::before { animation: none; } .kpi:hover, .card:hover, .steps li:hover, .q-btn:hover { transform: none; } }