:root {
  color-scheme: light;
  --page: #f3eee3;
  --surface: #fffdf7;
  --surface-muted: #eee6d6;
  --ink: #302a24;
  --muted: #6c6257;
  --accent: #956b23;
  --accent-dark: #76511a;
  --border: #d8ccb8;
  --serif: Georgia, "Times New Roman", "Noto Serif Devanagari", "Noto Serif Kannada", "Noto Serif Tamil", "Noto Serif Telugu", serif;
  --sans: Inter, ui-sans-serif, system-ui, "Noto Sans Devanagari", "Noto Sans Kannada", "Noto Sans Tamil", "Noto Sans Telugu", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: var(--sans); line-height: 1.55; }
button, textarea { font: inherit; }
button { min-height: 44px; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, textarea:focus-visible, a:focus-visible, [tabindex]:focus-visible { outline: 3px solid #c58b2b; outline-offset: 3px; }

.institutional-header { min-height: 132px; padding: 25px clamp(20px, 4vw, 64px); border-bottom: 1px solid var(--border); background: rgba(255, 253, 247, .7); display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.institution p, .institution span, .product-identity p { margin: 0; }
.institution p { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; color: var(--accent-dark); }
.institution span { color: var(--muted); font-size: .86rem; }
.product-identity { text-align: right; }
.product-identity h1 { margin: 0; font: 400 clamp(2rem, 4vw, 3rem)/1.05 var(--serif); }
.product-identity p { color: var(--muted); font-size: .92rem; }

.study-layout { display: grid; grid-template-columns: minmax(215px, 245px) minmax(560px, 760px) minmax(215px, 245px); justify-content: center; align-items: start; gap: clamp(18px, 2.5vw, 38px); padding: 38px clamp(20px, 3vw, 52px) 80px; }
.study-rail { position: sticky; top: 24px; max-height: calc(100vh - 48px); overflow: auto; padding: 22px 0; }
.study-rail h2 { margin: 3px 0 10px; font: 400 1.35rem/1.25 var(--serif); }
.rail-intro, .community-empty { color: var(--muted); font-size: .9rem; }
.eyebrow { margin: 0 0 5px; color: var(--accent-dark); font-size: .72rem; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }
.question-list { list-style: none; margin: 18px 0 0; padding: 0; border-top: 1px solid var(--border); }
.question-list li { border-bottom: 1px solid var(--border); }
.question-list button { width: 100%; padding: 14px 4px; border: 0; background: transparent; color: var(--ink); text-align: left; cursor: pointer; line-height: 1.35; }
.question-list button:hover { color: var(--accent-dark); }
.question-list span { display: block; margin-bottom: 3px; color: var(--accent); font-size: .64rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.community-empty { margin-top: 20px; padding: 18px; border: 1px solid var(--border); background: rgba(255, 253, 247, .45); }
.community-empty p { margin: 0; }
.rail-close, .mobile-discovery { display: none; }

.study-center { min-width: 0; }
.ask-form { padding: clamp(22px, 4vw, 38px); border: 1px solid var(--border); border-top: 4px solid var(--accent); background: var(--surface); box-shadow: 0 12px 30px rgba(79, 57, 27, .06); }
.ask-form label { display: block; margin-bottom: 10px; font: 400 1.32rem var(--serif); }
.ask-form textarea { display: block; width: 100%; min-height: 112px; resize: vertical; padding: 15px 16px; border: 1px solid #bbae98; border-radius: 2px; background: #fffefa; color: var(--ink); line-height: 1.5; }
.ask-form textarea:disabled { opacity: .75; }
.form-actions { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 16px; }
.form-actions p { margin: 0; color: var(--muted); font-size: .78rem; }
.primary-button, .secondary-button { border: 1px solid var(--accent-dark); border-radius: 2px; padding: 10px 18px; cursor: pointer; font-weight: 700; }
.primary-button { flex: 0 0 auto; background: var(--accent-dark); color: #fffdf7; }
.primary-button:hover { background: #624115; }
.primary-button:disabled { cursor: wait; opacity: .65; }
.secondary-button { background: transparent; color: var(--accent-dark); }

#study-result { margin-top: 30px; }
.orientation { padding: clamp(28px, 5vw, 52px) clamp(12px, 3vw, 30px); text-align: center; }
.orientation h2 { margin: 4px 0 10px; font: 400 clamp(2rem, 5vw, 3.2rem)/1.14 var(--serif); }
.orientation > p:last-child { max-width: 580px; margin: 0 auto; color: var(--muted); }
.submitted-question { margin: 0 0 28px; padding: 0 4px 18px; border-bottom: 1px solid var(--border); }
.submitted-question h2 { margin: 4px 0 0; font: 400 clamp(1.45rem, 3vw, 2rem)/1.3 var(--serif); }
.waiting, .result-message, .casual-result { padding: clamp(24px, 4vw, 38px); border: 1px solid var(--border); background: var(--surface); }
.waiting { display: flex; align-items: center; gap: 18px; }
.waiting h3, .result-message h3 { margin: 0 0 4px; font: 400 1.35rem var(--serif); }
.waiting p, .result-message p { margin: 0; color: var(--muted); }
.waiting-mark { width: 22px; height: 22px; flex: 0 0 auto; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: turn 1.2s linear infinite; }
.error-state .secondary-button { margin-top: 20px; }
.om { display: block; color: var(--accent); font: 2rem var(--serif); }

.answer-document { padding: clamp(26px, 5vw, 48px); border: 1px solid var(--border); background: var(--surface); box-shadow: 0 12px 30px rgba(79, 57, 27, .05); }
.direct-answer { margin: 8px 0 0; font: 400 clamp(1.18rem, 2.2vw, 1.4rem)/1.72 var(--serif); white-space: pre-line; }
.claims { margin-top: 40px; padding-top: 30px; border-top: 1px solid var(--border); }
.claims > h3, .study-note h3 { margin: 0 0 18px; font: 400 1.55rem var(--serif); }
.claim { padding: 0 0 28px; }
.claim > p { margin: 0; font-size: 1.02rem; }
.claim-sources { margin: 16px 0 0 18px; padding-left: 18px; border-left: 2px solid var(--surface-muted); }
.claim-sources h4 { margin: 0 0 8px; color: var(--muted); font-size: .7rem; letter-spacing: .11em; text-transform: uppercase; }
.evidence { padding: 12px 0; border-top: 1px solid var(--border); }
.evidence h5 { margin: 0 0 4px; font: 400 1rem var(--serif); }
.text-button { min-height: 36px; padding: 4px 0; border: 0; background: transparent; color: var(--accent-dark); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.passage { margin-top: 12px; padding: 16px; background: #f7f1e5; }
.script-selector { display: flex; flex-wrap: wrap; gap: 6px; }
.script-selector button { min-height: 38px; padding: 6px 10px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); cursor: pointer; }
.script-selector button[aria-pressed="true"] { border-color: var(--accent-dark); background: var(--accent-dark); color: white; }
.passage blockquote { margin: 18px 0 8px; font: 400 1.08rem/1.8 var(--serif); white-space: pre-wrap; }
.provenance { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin: 14px 0 0; color: var(--muted); font-size: .78rem; }
.provenance a { color: var(--accent-dark); }
.study-note { margin-top: 34px; padding: 22px; border-left: 3px solid var(--accent); background: var(--surface-muted); }
.study-note h3 { margin-bottom: 8px; font-size: 1.2rem; }
.study-note ul { margin: 0; padding-left: 20px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@keyframes turn { to { transform: rotate(360deg); } }

@media (max-width: 1100px) {
  .institutional-header { min-height: 112px; }
  .mobile-discovery { display: flex; gap: 10px; padding: 20px 20px 0; justify-content: center; }
  .mobile-discovery button { padding: 8px 14px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); }
  .study-layout { display: block; max-width: 780px; margin: 0 auto; padding-top: 20px; }
  .study-rail { display: none; position: fixed; inset: 0; z-index: 10; max-height: none; padding: 70px clamp(24px, 7vw, 70px) 40px; background: var(--surface); }
  .study-rail.is-open { display: block; }
  .rail-close { display: block; position: absolute; top: 14px; right: 20px; width: 44px; border: 0; background: transparent; color: var(--ink); font-size: 2rem; cursor: pointer; }
  .question-list { max-width: 650px; }
}

@media (max-width: 620px) {
  .institutional-header { display: block; padding: 20px; }
  .product-identity { margin-top: 18px; text-align: left; }
  .product-identity h1 { font-size: 2rem; }
  .mobile-discovery { display: grid; grid-template-columns: 1fr 1fr; }
  .study-layout { padding: 18px 14px 60px; }
  .ask-form, .answer-document { padding: 22px 18px; }
  .form-actions { display: block; }
  .form-actions .primary-button { width: 100%; margin-top: 14px; }
  .claim-sources { margin-left: 0; padding-left: 12px; }
  .passage { padding: 14px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}