:root {
    color-scheme: light;
    --ink: #172033;
    --muted: #667085;
    --line: #d8dee9;
    --surface: #ffffff;
    --surface-soft: #f6f8fb;
    --brand: #1457d9;
    --brand-dark: #0d3f9d;
    --good: #16835b;
    --good-soft: #e8f7f1;
    --warn: #ad6300;
    --warn-soft: #fff3dc;
    --shadow: 0 12px 35px rgba(30, 48, 80, 0.08);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--surface-soft); }
body {
    min-height: 100vh;
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 90% 0%, rgba(20, 87, 217, 0.12), transparent 26rem),
        var(--surface-soft);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--brand); }
.site-header { background: rgba(255,255,255,.88); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 5; }
.header-inner { width: min(1180px, calc(100% - 2rem)); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .75rem; color: var(--ink); text-decoration: none; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; color: white; background: linear-gradient(145deg, var(--brand), var(--brand-dark)); border-radius: 12px; font-weight: 800; letter-spacing: -.03em; box-shadow: 0 8px 20px rgba(20,87,217,.22); }
.brand strong, .brand small { display: block; }
.brand small { color: var(--muted); margin-top: .1rem; }
nav { display: flex; gap: .45rem; }
nav a { color: var(--ink); text-decoration: none; font-size: .9rem; font-weight: 650; padding: .65rem .8rem; border-radius: 9px; }
nav a:hover { background: #edf2fb; color: var(--brand); }
.page-shell { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; padding: 2.25rem 0 3rem; }
.hero { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; padding: 1.5rem 0 2rem; }
.eyebrow { margin: 0 0 .4rem; color: var(--brand); text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 800; }
h1 { margin: 0; font-size: clamp(2rem, 6vw, 3.7rem); line-height: 1.02; letter-spacing: -.045em; }
.lede { max-width: 720px; margin: 1rem 0 0; color: var(--muted); font-size: 1.08rem; line-height: 1.65; }
.status-stack { display: flex; flex-direction: column; align-items: flex-end; gap: .55rem; padding-top: .25rem; }
.status { display: inline-flex; align-items: center; gap: .5rem; border-radius: 999px; padding: .48rem .72rem; font-size: .86rem; font-weight: 750; white-space: nowrap; }
.status span { width: .55rem; height: .55rem; border-radius: 50%; }
.status-ok { color: var(--good); background: var(--good-soft); }
.status-ok span { background: var(--good); box-shadow: 0 0 0 4px rgba(22,131,91,.12); }
.status-warn { color: var(--warn); background: var(--warn-soft); }
.status-warn span { background: var(--warn); box-shadow: 0 0 0 4px rgba(173,99,0,.12); }
.summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; margin-bottom: .85rem; }
.summary-card { background: linear-gradient(180deg, #fff, #fbfcfe); border: 1px solid var(--line); border-radius: 16px; padding: 1rem 1.1rem; box-shadow: var(--shadow); }
.summary-card span { display: block; color: var(--muted); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.summary-card strong { display: block; margin-top: .4rem; font-size: 1.1rem; overflow-wrap: anywhere; }
.diagnostic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem; }
.panel { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 1.15rem; box-shadow: var(--shadow); }
.panel-wide { grid-column: 1 / -1; }
.panel-heading { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: .65rem; }
h2 { margin: 0; font-size: 1.04rem; letter-spacing: -.01em; }
.pill { color: var(--brand-dark); background: #eaf0ff; border-radius: 999px; padding: .3rem .55rem; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.pill-good { color: var(--good); background: var(--good-soft); }
.pill-warn { color: var(--warn); background: var(--warn-soft); }
dl { margin: 0; }
dl > div { display: grid; grid-template-columns: minmax(120px, .8fr) minmax(0, 1.35fr); gap: .9rem; padding: .68rem 0; border-top: 1px solid #e9edf3; }
dl > div:first-child { border-top: 0; }
dt { color: var(--muted); font-size: .88rem; }
dd { min-width: 0; margin: 0; text-align: right; font-size: .88rem; font-weight: 650; overflow-wrap: anywhere; }
.wrap { word-break: break-word; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.check { display: flex; gap: .75rem; padding: .85rem; background: var(--surface-soft); border: 1px solid #e5eaf2; border-radius: 12px; }
.check-icon { flex: 0 0 1.65rem; width: 1.65rem; height: 1.65rem; display: grid; place-items: center; border-radius: 50%; font-weight: 900; }
.check-icon.good { color: var(--good); background: var(--good-soft); }
.check-icon.warn { color: var(--warn); background: var(--warn-soft); }
.check strong, .check small { display: block; }
.check strong { font-size: .9rem; }
.check small { color: var(--muted); margin-top: .2rem; line-height: 1.4; }
.error-page { max-width: 680px; margin: 8vh auto; text-align: center; background: white; border: 1px solid var(--line); border-radius: 20px; padding: 3rem 2rem; box-shadow: var(--shadow); }
.error-page p:not(.eyebrow) { color: var(--muted); }
.button { display: inline-block; margin-top: 1rem; padding: .75rem 1rem; color: white; background: var(--brand); border-radius: 10px; text-decoration: none; font-weight: 700; }
footer { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; padding: 0 0 2rem; color: var(--muted); font-size: .8rem; text-align: center; }

@media (max-width: 800px) {
    .header-inner { align-items: flex-start; padding: .8rem 0; }
    nav { flex-direction: column; align-items: flex-end; gap: 0; }
    nav a { padding: .3rem .4rem; }
    .hero { flex-direction: column; gap: 1rem; }
    .status-stack { align-items: flex-start; flex-direction: row; flex-wrap: wrap; }
    .summary-grid { grid-template-columns: repeat(2, 1fr); }
    .diagnostic-grid { grid-template-columns: 1fr; }
    .panel-wide { grid-column: auto; }
    .check-grid { grid-template-columns: 1fr; }
}

@media (max-width: 500px) {
    .page-shell { width: min(100% - 1rem, 1180px); padding-top: 1rem; }
    .header-inner { width: min(100% - 1rem, 1180px); }
    .brand small { display: none; }
    .summary-grid { grid-template-columns: 1fr 1fr; gap: .5rem; }
    .summary-card { padding: .85rem; }
    .panel { padding: .95rem; }
    dl > div { display: block; }
    dd { margin-top: .28rem; text-align: left; }
}