:root {
  --ink: #0f172a;
  --muted: #64748b;
  --line: #dbe3ee;
  --surface: #ffffff;
  --surface-2: #f7f9fc;
  --navy: #0f172a;
  --blue: #2457d6;
  --blue-dark: #183e9f;
  --green: #08745c;
  --amber: #a25d00;
  --red: #b42318;
  --shadow: 0 18px 50px rgba(15, 23, 42, .08);
  --radius: 18px;
}
* { box-sizing: border-box; }
html { color-scheme: light; background: var(--surface-2); }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--ink); background: var(--surface-2); line-height: 1.55; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; background: var(--navy); color: #fff; padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { top: 16px; }
.noscript-note { margin: 0; padding: 12px; text-align: center; background: #fff4e5; }
.app-header { position: sticky; top: 0; z-index: 30; background: rgba(255,255,255,.94); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(219,227,238,.9); }
.header-inner { max-width: 1280px; margin: 0 auto; min-height: 72px; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 760; letter-spacing: -.02em; }
.brand__mark { width: 34px; height: 34px; border-radius: 10px; display: inline-grid; place-items: center; background: var(--navy); color: #fff; font-size: 13px; letter-spacing: .06em; }
.brand--light { color: #fff; }
.brand--light .brand__mark { background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav > a { padding: 9px 12px; border-radius: 9px; color: #334155; font-weight: 620; }
.main-nav > a:hover, .main-nav > a[aria-current="page"] { background: #edf3ff; color: var(--blue); }
.user-chip { margin-left: 8px; padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; color: #475569; font-size: 13px; }
.page-shell { max-width: 1280px; margin: 0 auto; padding: 44px 28px 72px; }
.public-page { padding-top: 56px; }
.eyebrow { margin: 0 0 9px; text-transform: uppercase; letter-spacing: .12em; font-weight: 780; font-size: 11px; color: var(--blue); }
h1, h2, h3 { margin-top: 0; line-height: 1.15; letter-spacing: -.03em; }
h1 { font-size: clamp(34px, 4vw, 58px); margin-bottom: 18px; }
h2 { font-size: clamp(25px, 2.5vw, 36px); margin-bottom: 12px; }
h3 { font-size: 18px; margin-bottom: 8px; }
p { margin-top: 0; }
.lede { max-width: 760px; color: #475569; font-size: 20px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; border-radius: 10px; border: 1px solid transparent; padding: 10px 16px; font-weight: 720; transition: .18s ease; }
.button:hover { transform: translateY(-1px); }
.button:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.button--primary { background: var(--blue); color: #fff; box-shadow: 0 7px 20px rgba(36,87,214,.2); }
.button--primary:hover { background: var(--blue-dark); }
.button--secondary { background: #fff; border-color: var(--line); color: #24324a; }
.button--danger { background: #fff1f0; color: var(--red); border-color: #ffd1cc; }
.button--small { min-height: 36px; padding: 7px 12px; font-size: 13px; }
.button--wide { width: 100%; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; padding: 46px 0 54px; }
.hero-copy h1 { max-width: 760px; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; }
.hero-demo { background: #0c1730; border-radius: 24px; padding: 22px; color: #fff; box-shadow: 0 28px 80px rgba(15,23,42,.28); }
.demo-question, .demo-consensus { border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.06); border-radius: 14px; padding: 15px; }
.demo-question span, .demo-consensus span { display: block; text-transform: uppercase; letter-spacing: .1em; font-size: 10px; color: #a9b9dd; margin-bottom: 6px; }
.demo-panel { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 13px 0; }
.demo-panel article { min-height: 130px; background: #fff; color: #182238; border-radius: 12px; padding: 13px; }
.demo-panel small { color: #6b7891; display: block; margin-bottom: 16px; }
.demo-panel b { font-size: 13px; line-height: 1.45; }
.trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; margin-bottom: 30px; }
.trust-strip span { padding: 16px 18px; background: #fff; font-size: 13px; font-weight: 650; color: #475569; }
.content-card, .query-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feature-grid article { padding: 18px; border: 1px solid var(--line); border-radius: 13px; background: #fbfcfe; }
.feature-grid p { color: #64748b; margin: 0; font-size: 14px; }
.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 25px; }
.page-heading h1 { font-size: clamp(31px, 3vw, 46px); margin-bottom: 10px; max-width: 920px; }
.page-heading p:last-child { color: var(--muted); margin-bottom: 0; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.section-heading h2 { margin-bottom: 0; }
.query-card form > label, .auth-card label, .setting-field { display: grid; gap: 8px; font-weight: 680; }
textarea, input[type="email"], input[type="password"], input[type="text"], input[type="number"], select { width: 100%; border: 1px solid #cbd5e1; background: #fff; color: #0f172a; border-radius: 10px; padding: 11px 12px; outline: none; }
textarea { min-height: 180px; resize: vertical; line-height: 1.55; }
textarea:focus, input:focus, select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(36,87,214,.12); }
fieldset { border: 0; padding: 0; margin: 24px 0; }
legend { font-weight: 760; margin-bottom: 12px; }
.provider-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 11px; }
.provider-option { position: relative; display: flex; gap: 10px; align-items: flex-start; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfe; cursor: pointer; min-height: 92px; }
.provider-option:has(input:checked) { border-color: var(--blue); background: #f1f5ff; box-shadow: inset 0 0 0 1px var(--blue); }
.provider-option:has(input:disabled) { opacity: .5; cursor: not-allowed; }
.provider-option input { margin-top: 3px; }
.provider-option strong { display: block; margin-bottom: 4px; }
.provider-option small { display: block; color: var(--muted); font-weight: 500; line-height: 1.35; overflow-wrap: anywhere; }
.form-row { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 18px; margin-bottom: 22px; }
.file-field { display: grid; gap: 7px; font-weight: 680; }
.file-field input { border: 1px dashed #b9c5d5; padding: 11px; border-radius: 10px; background: #fbfcfe; }
.check-row { display: flex; gap: 9px; align-items: center; min-height: 44px; font-weight: 650; }
.run-status { margin-top: 20px; padding: 14px 16px; border-radius: 11px; background: #eef5ff; color: #23447e; display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.spinner { width: 18px; height: 18px; border: 2px solid #b7c9ef; border-top-color: var(--blue); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.response-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); gap: 16px; align-items: start; margin: 25px 0; }
.response-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px; min-width: 0; box-shadow: 0 10px 35px rgba(15,23,42,.055); }
.response-card header { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; padding-bottom: 14px; border-bottom: 1px solid #edf1f6; margin-bottom: 15px; }
.response-card header .eyebrow { margin-bottom: 3px; }
.response-card header small { color: var(--muted); }
.response-content { white-space: pre-wrap; overflow-wrap: anywhere; color: #27364d; font-size: 14px; line-height: 1.62; max-height: 700px; overflow: auto; padding-right: 5px; }
.status-pill { display: inline-flex; border-radius: 999px; padding: 4px 8px; font-size: 11px; font-weight: 750; text-transform: capitalize; }
.status-pill--complete { background: #e8f7f2; color: var(--green); }
.status-pill--error { background: #fff0ef; color: var(--red); }
.status-pill--pending { background: #eef2f7; color: #64748b; }
.error-copy { color: var(--red); margin: 0; }

.web-search-note { display: block; margin-top: 5px; color: #64748b; }
.source-list { margin-top: 15px; padding-top: 13px; border-top: 1px solid #edf1f6; }
.source-list > strong { display: block; margin-bottom: 7px; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: #64748b; }
.source-list ul { margin: 0; padding-left: 18px; display: grid; gap: 5px; }
.source-list a { color: var(--blue); overflow-wrap: anywhere; }
.setting-field--check { display: grid; grid-template-columns: 1fr auto; column-gap: 14px; align-items: center; }
.setting-field--check small { grid-column: 1; }
.setting-field--check input { grid-column: 2; grid-row: 1 / span 2; width: 20px; height: 20px; }

.comparison-actions { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin: 18px 0 25px; }
.vote-panel { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 20px; margin: 20px 0; }
.vote-options { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 12px; }
.vote-button { border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 9px 13px; font-weight: 700; }
.vote-button:hover { border-color: var(--blue); color: var(--blue); }
.summary-section { margin-top: 25px; }
.summary-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 18px 0; }
.summary-grid article, .summary-block { border: 1px solid var(--line); border-radius: 13px; padding: 17px; background: #fbfcfe; }
.summary-grid ul, .summary-block ul { margin: 10px 0 0; padding-left: 20px; }
.summary-grid li, .summary-block li { margin-bottom: 7px; color: #394861; }
.confidence-badge { padding: 7px 10px; border-radius: 999px; background: #edf3ff; color: var(--blue); font-size: 12px; font-weight: 750; text-transform: capitalize; }
.history-list { display: grid; gap: 12px; }
.history-card { display: flex; justify-content: space-between; align-items: center; gap: 22px; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 19px 21px; }
.history-card:hover { border-color: #a9bbea; box-shadow: 0 9px 28px rgba(15,23,42,.06); }
.history-card small { color: var(--muted); }
.history-card h2 { font-size: 18px; margin: 4px 0 6px; }
.history-card p { margin: 0; color: #64748b; font-size: 13px; }
.empty-state { background: #fff; border: 1px dashed #b9c5d5; border-radius: 16px; padding: 42px; text-align: center; }
.auth-layout { min-height: 100vh; display: grid; grid-template-columns: minmax(360px, .9fr) 1.1fr; }
.auth-story { background: #0b1630; color: #fff; padding: 42px clamp(28px, 5vw, 72px); display: flex; flex-direction: column; justify-content: space-between; }
.auth-story__copy { max-width: 620px; margin: auto 0; }
.auth-story__copy h1 { font-size: clamp(38px, 4.5vw, 62px); }
.auth-story__copy p { color: #c5d0e7; font-size: 17px; }
.auth-story .eyebrow { color: #91b1ff; }
.trust-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.trust-list span { border: 1px solid rgba(255,255,255,.17); background: rgba(255,255,255,.06); border-radius: 999px; padding: 7px 10px; font-size: 12px; color: #d7e0f1; }
.auth-story__foot { color: #8797b5; font-size: 12px; }
.auth-panel { display: grid; place-items: center; padding: 32px; }
.auth-card { width: min(470px, 100%); background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 28px; }
.auth-card__head { margin-bottom: 22px; }
.auth-card__head p:last-child { color: var(--muted); }
.auth-card label { margin-bottom: 15px; }
.auth-card small { color: var(--muted); font-weight: 500; }
.auth-switch { margin: 18px 0 0; text-align: center; color: var(--muted); font-size: 14px; }
.auth-switch a { color: var(--blue); font-weight: 700; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 22px; }
.stat-grid article { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.stat-grid span { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.stat-grid strong { display: block; font-size: 29px; margin-top: 5px; letter-spacing: -.04em; }
.admin-tabs { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 20px; }
.admin-tabs a { padding: 8px 11px; border-radius: 9px; border: 1px solid var(--line); background: #fff; font-size: 13px; font-weight: 700; }
.admin-tabs a[aria-current="page"] { border-color: var(--blue); color: var(--blue); background: #f2f6ff; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 12px 10px; border-bottom: 1px solid #edf1f6; vertical-align: top; }
th { color: #64748b; font-size: 11px; text-transform: uppercase; letter-spacing: .07em; }
.provider-admin-grid { display: grid; gap: 12px; }
.provider-admin-card { border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.provider-admin-card__head { display: flex; justify-content: space-between; gap: 15px; margin-bottom: 14px; }
.provider-admin-card__head p { color: var(--muted); margin: 0; font-size: 13px; }
.provider-admin-fields { display: grid; grid-template-columns: 2fr 1fr 1fr .8fr; gap: 12px; }
.setting-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.setting-field { border: 1px solid var(--line); padding: 16px; border-radius: 12px; background: #fbfcfe; }
.setting-field small { color: var(--muted); font-weight: 500; }
.alert { padding: 13px 15px; border-radius: 11px; margin-bottom: 16px; border: 1px solid; }
.alert--warning { background: #fff8e8; color: #805000; border-color: #f3d39a; }
.alert--error { background: #fff0ef; color: var(--red); border-color: #ffd1cc; }
.alert--success { background: #eaf8f3; color: var(--green); border-color: #bce6d8; }
.toast-stack { position: fixed; z-index: 90; right: 18px; bottom: 18px; display: grid; gap: 10px; width: min(390px, calc(100vw - 36px)); }
.toast { background: #fff; border: 1px solid var(--line); box-shadow: 0 18px 55px rgba(15,23,42,.18); border-radius: 12px; padding: 13px 15px; display: flex; justify-content: space-between; gap: 12px; }
.toast--error { border-left: 4px solid var(--red); }
.toast--success { border-left: 4px solid var(--green); }
.toast p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.toast button { border: 0; background: transparent; color: #64748b; }
.app-footer { border-top: 1px solid var(--line); padding: 24px 28px; display: flex; justify-content: space-between; gap: 15px; color: #64748b; font-size: 12px; max-width: 1280px; margin: 0 auto; }
.boot-shell { min-height: 60vh; display: grid; place-items: center; align-content: center; gap: 12px; color: #64748b; }
.boot-mark { width: 45px; height: 45px; border-radius: 13px; background: var(--navy); color: #fff; display: grid; place-items: center; font-weight: 800; }
.muted { color: var(--muted); }
.inline-actions { display: flex; gap: 8px; flex-wrap: wrap; }

@media (max-width: 1050px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .provider-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .provider-admin-fields { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .header-inner { padding: 0 16px; min-height: 64px; }
  .brand > span:last-child { display: none; }
  .main-nav { gap: 2px; }
  .main-nav > a { padding: 8px; font-size: 13px; }
  .user-chip { display: none; }
  .page-shell { padding: 30px 16px 55px; }
  .public-page { padding-top: 30px; }
  .hero-grid { padding-top: 25px; }
  .demo-panel { grid-template-columns: 1fr; }
  .demo-panel article { min-height: auto; }
  .feature-grid, .summary-grid, .setting-grid { grid-template-columns: 1fr; }
  .provider-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .page-heading { align-items: flex-start; flex-direction: column; }
  
.web-search-note { display: block; margin-top: 5px; color: #64748b; }
.source-list { margin-top: 15px; padding-top: 13px; border-top: 1px solid #edf1f6; }
.source-list > strong { display: block; margin-bottom: 7px; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: #64748b; }
.source-list ul { margin: 0; padding-left: 18px; display: grid; gap: 5px; }
.source-list a { color: var(--blue); overflow-wrap: anywhere; }
.setting-field--check { display: grid; grid-template-columns: 1fr auto; column-gap: 14px; align-items: center; }
.setting-field--check small { grid-column: 1; }
.setting-field--check input { grid-column: 2; grid-row: 1 / span 2; width: 20px; height: 20px; }

.comparison-actions { align-items: stretch; flex-direction: column; }
  .auth-layout { grid-template-columns: 1fr; }
  .auth-story { min-height: 370px; padding: 28px 22px; }
  .auth-story__copy h1 { font-size: 38px; }
  .auth-panel { padding: 22px 16px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .provider-admin-fields { grid-template-columns: 1fr; }
  .app-footer { padding: 20px 16px; flex-direction: column; }
}