:root {
  --white: #fdfdfd;
  --red: #c72323;
  --blue: #54b5e2;
  --warm-gray: #d4cfc5;
  --black: #010101;
  --muted: #5c6064;
  --soft-blue: #e8f6fc;
  --soft-red: #fbeaea;
  --line: #d9d9d7;
  --radius: 18px;
  --shadow: 0 18px 50px rgb(1 1 1 / 10%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--black);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}
a { color: inherit; }
button, input, select { font: inherit; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link:focus { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 10px 14px; color: var(--black); background: var(--white); border-radius: 8px; }
.preview-banner { padding: 8px 20px; color: var(--white); background: var(--red); text-align: center; font-size: .78rem; font-weight: 800; letter-spacing: .045em; text-transform: uppercase; }
.site-header { color: var(--white); background: var(--black); }
.nav { width: min(1200px, calc(100% - 40px)); margin: 0 auto; padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 15px; color: var(--white); text-decoration: none; font-size: .92rem; font-weight: 850; letter-spacing: .04em; text-transform: uppercase; }
.brand-mark { display: flex; flex: none; flex-direction: column; align-items: center; gap: 7px; }
.brand img { width: 98px; height: 98px; object-fit: contain; }
.brand-name { color: #d7d7d7; font-size: clamp(1rem, 1.4vw, 1.2rem); font-weight: 400; letter-spacing: 0; line-height: 1; text-transform: none; }
.brand-section { padding-left: 15px; border-left: 1px solid rgb(255 255 255 / 35%); }
.nav-links { display: flex; gap: 24px; align-items: center; font-size: .9rem; font-weight: 750; }
.nav-links a { text-decoration: none; }
.nav-links .active { padding-bottom: 5px; border-bottom: 3px solid var(--blue); }
.nav-links span { color: #a7a7a7; }
.nav-links small { padding: 3px 6px; margin-left: 3px; color: var(--black); background: var(--warm-gray); border-radius: 999px; font-size: .62rem; text-transform: uppercase; }
.hero { width: min(1200px, calc(100% - 40px)); margin: 0 auto; padding: 58px 0 88px; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 70px; align-items: center; }
.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: .77rem; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow.dark { color: #167aa9; }
h1, h2, h3, p { text-wrap: pretty; }
h1 { max-width: 790px; margin: 0; font-size: clamp(2.8rem, 6vw, 5.6rem); line-height: .96; letter-spacing: -.055em; }
h1 em { color: var(--blue); font-style: normal; }
.hero-lede { max-width: 730px; margin: 25px 0 0; color: #d7d7d7; font-size: clamp(1rem, 1.4vw, 1.2rem); }
.hero-search { max-width: 740px; margin-top: 31px; padding: 7px; display: flex; gap: 8px; background: var(--white); border-radius: 12px; }
.hero-search input { flex: 1; min-width: 0; padding: 13px 14px; border: 0; outline: 0; color: var(--black); background: transparent; }
.hero-search button { padding: 12px 20px; border: 0; border-radius: 8px; color: var(--white); background: var(--red); font-weight: 850; cursor: pointer; }
.hero-search button:hover, .hero-search button:focus-visible { background: #a91c1c; }
.hero-mark { padding: 30px; display: grid; gap: 22px; justify-items: center; border: 1px solid rgb(255 255 255 / 20%); border-radius: 24px; background: #111; text-align: center; }
.hero-mark img { width: min(380px, 100%); height: auto; object-fit: contain; }
.hero-mark strong, .hero-mark span { display: block; }
.hero-mark strong { font-size: 1.7rem; }
.hero-mark span { color: #c8c8c8; font-size: .9rem; }
main { width: min(1200px, calc(100% - 40px)); margin: 0 auto; padding: 0 0 90px; }
.status-strip { margin-top: -35px; display: grid; grid-template-columns: repeat(4, 1fr); position: relative; background: var(--white); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
.status-strip div { padding: 22px 25px; border-right: 1px solid var(--line); }
.status-strip div:last-child { border-right: 0; }
.status-strip strong, .status-strip span { display: block; }
.status-strip strong { color: var(--red); font-size: 1.55rem; }
.status-strip span { color: var(--muted); font-size: .82rem; }
.library-head { padding: 82px 0 33px; }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.02; letter-spacing: -.04em; }
.controls { padding: 18px; display: grid; grid-template-columns: minmax(260px, 1.6fr) 1fr 1fr auto; gap: 12px; align-items: end; background: var(--soft-blue); border: 1px solid #b7e1f4; border-radius: 15px; }
.control label { display: block; margin: 0 0 6px; font-size: .76rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.control input, .control select { width: 100%; min-height: 46px; padding: 10px 12px; color: var(--black); background: var(--white); border: 1px solid #a7cbdc; border-radius: 8px; }
.clear-button { min-height: 46px; padding: 10px 16px; border: 1px solid var(--black); border-radius: 8px; color: var(--black); background: transparent; font-weight: 800; cursor: pointer; }
.clear-button:hover, .clear-button:focus-visible { color: var(--white); background: var(--black); }
.library-assurance { margin: 11px 4px 0; color: var(--muted); font-size: .82rem; }
.results-meta { margin: 23px 0 13px; display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .88rem; }
.results-meta p { margin: 0; }
.answer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.answer-card { min-height: 385px; padding: 25px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 8px 25px rgb(1 1 1 / 6%); transition: transform .16s ease, box-shadow .16s ease; }
.answer-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card-labels { display: flex; justify-content: space-between; gap: 10px; align-items: start; }
.topic-label { color: var(--red); font-size: .73rem; font-weight: 900; letter-spacing: .09em; text-transform: uppercase; }
.evidence-label { padding: 4px 8px; color: #07577d; background: var(--soft-blue); border-radius: 999px; font-size: .7rem; font-weight: 800; text-transform: capitalize; }
.answer-card h3 { margin: 15px 0 13px; font-size: 1.45rem; line-height: 1.17; }
.answer-card h3 a { text-decoration-thickness: 1px; text-decoration-color: transparent; text-underline-offset: 3px; }
.answer-card h3 a:hover, .answer-card h3 a:focus-visible { text-decoration-color: var(--red); }
.card-answer { margin: 0; color: #2e3235; }
.card-scope { margin: 17px 0 0; padding: 10px 12px; color: #353535; background: #f2f0ec; border-left: 3px solid var(--warm-gray); font-size: .82rem; }
.card-footer { margin-top: auto; padding-top: 19px; display: flex; align-items: end; justify-content: space-between; gap: 15px; border-top: 1px solid var(--line); }
.card-footer span { max-width: 55%; color: var(--muted); font-size: .76rem; }
.card-footer span strong { display: block; color: var(--black); font-size: .84rem; }
.watch-link { flex: none; padding: 10px 12px; color: var(--white); background: var(--red); border-radius: 8px; text-decoration: none; font-size: .8rem; font-weight: 850; }
.watch-link:hover, .watch-link:focus-visible { background: #a91c1c; }
.empty-state, .data-error { padding: 42px; border: 1px dashed var(--warm-gray); border-radius: var(--radius); text-align: center; }
.empty-state h3 { margin: 0; }
.load-more { margin: 28px auto 0; padding: 12px 22px; display: block; border: 2px solid var(--black); border-radius: 9px; color: var(--black); background: var(--white); font-weight: 850; cursor: pointer; }
.load-more:hover, .load-more:focus-visible { color: var(--white); background: var(--black); }
.method { margin-top: 80px; padding: 42px; color: var(--white); background: var(--black); border-radius: 24px; }
.method h2 { max-width: 600px; }
.method-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.method-grid article { padding: 18px; border: 1px solid rgb(255 255 255 / 20%); border-radius: 12px; }
.method-grid strong { color: var(--blue); }
.method-grid p { margin: 7px 0 0; color: #c9c9c9; font-size: .85rem; }
footer { padding: 45px 20px; color: #cfcfcf; background: var(--black); text-align: center; }
footer img { width: 104px; height: 104px; object-fit: contain; }
footer p { margin: 8px auto 0; max-width: 600px; }
.fine-print { color: #8f8f8f; font-size: .76rem; }
.compact-header { color: var(--white); background: var(--black); }
.back-link { color: var(--blue); font-weight: 800; text-decoration: none; }
.answer-main { padding: 80px 0 100px; }
.answer-detail { max-width: 920px; margin: 0 auto; }
.answer-detail h1 { max-width: none; font-size: clamp(2.7rem, 6vw, 5.2rem); }
.direct-answer { margin: 30px 0; padding: 25px 28px; background: var(--soft-blue); border-left: 6px solid var(--blue); font-size: clamp(1.2rem, 2vw, 1.55rem); }
.answer-facts { margin: 35px 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.answer-facts div { padding: 18px; background: var(--white); }
.answer-facts dt { color: var(--muted); font-size: .72rem; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.answer-facts dd { margin: 5px 0 0; font-weight: 700; text-transform: capitalize; }
.accuracy-note { padding: 20px 23px; background: #f3f0eb; border-left: 5px solid var(--warm-gray); }
.accuracy-note p { margin: 5px 0 0; }
.source-card { margin-top: 24px; padding: 23px; display: flex; align-items: center; justify-content: space-between; gap: 25px; color: var(--white); background: var(--black); border-radius: 12px; }
.source-card span, .source-card strong { display: block; }
.source-card span { color: var(--blue); font-size: .72rem; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.source-card a { flex: none; padding: 11px 14px; color: var(--white); background: var(--red); border-radius: 8px; text-decoration: none; font-weight: 850; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-mark { grid-template-columns: 220px 1fr; align-items: center; text-align: left; }
  .hero-mark img { width: 220px; }
  .controls { grid-template-columns: 1fr 1fr; }
  .search-control { grid-column: 1 / -1; }
  .method-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .nav { width: min(100% - 28px, 1200px); }
  .brand img { width: 76px; height: 76px; }
  .brand-section, .nav-links span { display: none; }
  .hero { width: min(100% - 28px, 1200px); padding-top: 38px; gap: 40px; }
  .hero-search button { padding-inline: 12px; }
  main { width: min(100% - 28px, 1200px); }
  .status-strip { grid-template-columns: repeat(2, 1fr); }
  .status-strip div { border-bottom: 1px solid var(--line); }
  .status-strip div:nth-child(2) { border-right: 0; }
  .library-head { padding-top: 65px; }
  .controls { grid-template-columns: 1fr; }
  .search-control { grid-column: auto; }
  .answer-grid { grid-template-columns: 1fr; }
  .answer-card { min-height: 0; }
  .card-footer { align-items: stretch; flex-direction: column; }
  .card-footer span { max-width: none; }
  .watch-link { text-align: center; }
  .method { padding: 28px; }
  .method-grid { grid-template-columns: 1fr; }
  .hero-mark { grid-template-columns: 135px 1fr; padding: 20px; }
  .hero-mark img { width: 135px; }
  .answer-facts { grid-template-columns: 1fr; }
  .source-card { align-items: stretch; flex-direction: column; }
  .source-card a { text-align: center; }
}