:root {
  color-scheme: dark;
  --ink: #e9edf0;
  --muted: #a0aab5;
  --paper: #101317;
  --surface: #171c22;
  --card: #1c2229;
  --recess: #12171c;
  --line: #333d47;
  --line-soft: #29323b;
  --yellow: #e4f568;
  --cyan: #86dadd;
  --amber: #e5cc91;
  --red: #ffb7b0;
  --shadow: 0 20px 60px #00000026;
  font-family: "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-width: 280px; scroll-padding-top: 24px; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 82% 0%, #86dadd06, transparent 42rem),
    linear-gradient(#a0aab503 1px, transparent 1px),
    linear-gradient(90deg, #a0aab503 1px, transparent 1px),
    var(--paper);
  background-size: auto, 48px 48px, 48px 48px, auto;
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
button, input, textarea { font: inherit; }
button, a, input, textarea, summary { -webkit-tap-highlight-color: transparent; }
button { touch-action: manipulation; }
a { color: var(--cyan); text-underline-offset: 4px; text-decoration-thickness: 1px; }
a:hover { color: var(--yellow); }
::selection { color: var(--paper); background: var(--yellow); }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
input:focus-visible, textarea:focus-visible { outline-offset: 2px; }
h1, h2, h3, h4 { color: var(--ink); font-weight: 650; }
h1 { margin: 0; font-size: clamp(32px, 4vw, 46px); line-height: 1.3; letter-spacing: 0.14em; }
h2 { margin: 0; font-size: 25px; line-height: 1.5; letter-spacing: 0.035em; }
h3 { font-size: 18px; line-height: 1.65; }
h4 { font-size: 15px; }
p { overflow-wrap: anywhere; }
svg { display: block; flex-shrink: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; font-size: 1rem; line-height: normal; letter-spacing: normal; }
.brand-title { width: 282px; max-width: 100%; font-size: 0; line-height: 0; letter-spacing: normal; }
.chinese-wordmark { display: block; width: 100%; height: auto; overflow: visible; }
.wordmark-accent { fill: var(--yellow); }
.latin-wordmark { display: block; width: 100%; height: auto; overflow: visible; }
.monogram-s { stroke: var(--cyan); }
.skip-link {
  position: absolute;
  top: 8px;
  left: 16px;
  z-index: 20;
  padding: 8px 16px;
  color: var(--paper);
  background: var(--yellow);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); color: var(--paper); }

.hero {
  max-width: 1224px;
  margin: 0 auto;
  padding: 30px 36px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 22px; min-width: 0; }
.brand-mark { width: 66px; height: 66px; color: var(--yellow); }
.brand-copy { min-width: 0; }
.eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
}
.wordmark { width: 164px; max-width: 100%; color: var(--yellow); }
.brand-divider { padding: 0 12px; color: #707e8b; }
.subtitle { margin: 8px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
.brand .subtitle { margin-top: 9px; }
.status-panel { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; max-width: 340px; }
.terminal-label { color: var(--muted); font-size: 11px; letter-spacing: 0.24em; }
.status {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--muted);
  background: #171c22bf;
  font-size: 12px;
  overflow-wrap: anywhere;
}
.status::before { content: ""; flex: 0 0 5px; width: 5px; height: 5px; background: #87939e; }
.status.good { color: var(--cyan); border-color: #365155; }
.status.good::before { background: var(--cyan); }
.portal-main { max-width: 1224px; margin: 0 auto; padding: 0 36px; }
.tabs {
  display: flex;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid var(--line);
  border-bottom-color: var(--line-soft);
  border-radius: 8px 8px 0 0;
  background: #151a20;
}
.tab {
  position: relative;
  min-height: 58px;
  padding: 14px 22px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 140ms, background-color 140ms;
}
.tab:hover { color: var(--ink); background: #ffffff03; }
.tab.active { color: var(--yellow); font-weight: 650; }
.tab.active::after { content: ""; position: absolute; height: 2px; bottom: -1px; left: 20px; right: 20px; background: var(--yellow); }
.tab:focus-visible { outline-offset: -6px; }
.panel {
  display: none;
  min-width: 0;
  padding: 24px 30px;
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 8px 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.panel.active { display: block; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 18px; }
.section-kicker { margin: 0 0 6px; color: var(--cyan); font-size: 11px; font-weight: 600; letter-spacing: 0.16em; }
.notice {
  margin: 20px 0;
  padding: 13px 16px;
  border: 1px solid #33494d;
  border-left: 2px solid var(--cyan);
  border-radius: 3px;
  background: #86dadd06;
  color: #becdd2;
  font-size: 13px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
.notice.warning { border-color: #514b38; border-left-color: var(--amber); color: #d8cba9; background: #e5cc9106; }
.identity-notice { display: flex; align-items: baseline; gap: 12px; }
.identity-notice::before { content: "AI"; flex-shrink: 0; font-size: 10px; font-weight: 700; letter-spacing: 0.06em; color: var(--amber); }
#dialogue-status { display: flex; align-items: baseline; gap: 9px; margin: 20px 0 13px; color: var(--muted); font-size: 13px; }
#dialogue-status::before { content: ""; flex: 0 0 5px; width: 5px; height: 5px; background: var(--cyan); }
.question-composer { padding: 18px 22px 16px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); }
.composer-heading { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 12px; }
.composer-heading label { color: var(--ink); font-weight: 600; }
.composer-heading > span { color: var(--muted); font-size: 12px; }
label { display: flex; flex-direction: column; gap: 9px; color: #c3cbd4; font-size: 13px; }
input, textarea {
  min-width: 0;
  width: 100%;
  border: 1px solid #44505c;
  border-radius: 4px;
  padding: 11px 13px;
  color: var(--ink);
  background: var(--recess);
  transition: border-color 140ms;
}
input:hover, textarea:hover { border-color: #5a6977; }
input:focus, textarea:focus { border-color: var(--cyan); }
input::placeholder, textarea::placeholder { color: #929da9; opacity: 1; }
textarea { display: block; height: 144px; min-height: 144px; resize: vertical; font-size: 15px; line-height: 1.9; }
.composer-options { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 16px 24px; margin-top: 14px; }
.date-option { width: 320px; max-width: 100%; gap: 7px; }
.date-option small { color: var(--muted); font-size: 11px; margin-left: 7px; }
input[type="date"] { min-height: 43px; max-width: 100%; font-size: 14px; font-variant-numeric: tabular-nums; }
input[type="date"]::-webkit-calendar-picker-indicator { cursor: pointer; padding: 3px; }
.live-option { display: flex; flex-direction: row; align-items: center; gap: 10px; min-height: 43px; cursor: pointer; }
.live-option input { flex: 0 0 16px; width: 16px; height: 16px; margin: 0; accent-color: var(--yellow); cursor: pointer; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  transition: background-color 140ms, border-color 140ms, color 140ms;
}
.button.primary { color: #191e0a; background: var(--yellow); border-color: var(--yellow); }
.button.primary:hover { background: #effc96; border-color: #effc96; }
.button.primary::after { content: "↗"; font-family: "Segoe UI", sans-serif; font-size: 17px; font-weight: 400; line-height: 1; }
.button.secondary { color: #d1d8e0; border-color: #46515d; background: #1b2229; }
.button.secondary:hover { color: var(--ink); border-color: #788693; background: #252e37; }
#ask-button { margin-left: auto; min-width: 150px; }
.market-button { flex-shrink: 0; color: var(--cyan) !important; }
button:disabled { cursor: wait; opacity: 0.5; }
#question-progress { margin-bottom: 0; }

.section-intro { margin-bottom: 22px; }
.subsection-heading { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px 20px; margin: 34px 0 18px; padding-top: 27px; border-top: 1px solid var(--line); }
.subsection-heading h2 { font-size: 21px; }
.subsection-heading > span { color: var(--muted); font-size: 12px; }
.card-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 16px; }
.principle-card { min-width: 0; padding: 22px; border: 1px solid var(--line); border-radius: 5px; background: var(--card); scroll-margin-top: 24px; overflow-wrap: anywhere; }
.principle-card h3 { margin: 0 0 11px; }
.principle-card p { margin: 10px 0; color: #bec7d0; line-height: 1.9; }
.principle-card h4 { margin: 17px 0 6px; }
.principle-card li { margin: 6px 0; color: #bec7d0; }
.principle-card a { overflow-wrap: anywhere; }
.logic-flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); align-items: start; gap: 12px; }
.logic-flow .principle-card { position: relative; padding: 19px 16px; border-top: 2px solid #59613d; background: linear-gradient(155deg, #e4f56805, transparent 65%), var(--card); }
.logic-flow h3 { margin: 17px 0 9px; font-size: 17px; }
.logic-flow p { font-size: 13px; }
.logic-flow small { font-size: 11px; line-height: 1.8; }
.logic-step { display: inline-flex; align-items: center; justify-content: center; width: 27px; height: 27px; border: 1px solid #59613d; border-radius: 3px; color: var(--yellow); font: 13px/1 Consolas, monospace; }
.card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; color: var(--muted); font-size: 12px; }
.card-meta time { color: var(--cyan); font-variant-numeric: tabular-nums; }
.card-meta > span { padding-left: 10px; border-left: 1px solid #52606d; }
.case-card { grid-column: 1 / -1; }
.case-card > h3 { font-size: 21px; }
.case-context { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin: 18px 0; padding: 20px; border: 1px solid var(--line-soft); border-radius: 4px; background: var(--recess); }
.case-context h4 { margin: 0; color: var(--cyan); font-size: 13px; }
.case-context small, .case-links { color: var(--muted); font-size: 12px; }
.case-context a { font-size: 12px; }
dl { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 11px 16px; margin: 16px 0; font-size: 14px; line-height: 1.9; }
dt { color: var(--muted); }
dd { margin: 0; }
details { min-width: 0; margin-top: 12px; border-top: 1px solid var(--line); }
summary { min-height: 44px; padding: 11px 2px; color: var(--cyan); font-size: 13px; cursor: pointer; overflow-wrap: anywhere; }
summary::marker { color: #8fabae; font-size: 10px; }
summary:hover { color: var(--yellow); }
details[open] > summary { color: var(--yellow); }
details > p { padding: 0 2px; }
blockquote { margin: 12px 0; padding: 10px 14px; border-left: 2px solid #587a7e; background: #86dadd04; color: #c8d2d9; line-height: 1.85; overflow-wrap: anywhere; }
.evidence-list, .answer-evidence { margin: 8px 0 14px; padding-left: 20px; line-height: 1.85; }
.evidence-list small, .answer-evidence small { display: block; color: var(--muted); font-size: 12px; }
.concept-evidence li + li, .answer-evidence li + li { margin-top: 20px; }
.concept-evidence blockquote { white-space: pre-wrap; }
.citation { display: inline-block; margin-right: 5px; color: var(--cyan); font: 600 0.85em/1.6 Consolas, monospace; letter-spacing: 0.015em; }
.principle-card h3 > .citation { padding: 3px 6px; border: 1px solid #465a60; border-radius: 3px; color: var(--yellow); font-size: 12px; vertical-align: 2px; }
.empty-state { padding: 40px 20px; border: 1px dashed var(--line); color: var(--muted); text-align: center; }

.answer { position: relative; min-width: 0; margin-top: 24px; padding: 28px 32px; border: 1px solid #46525a; border-radius: 6px; background: #191f25; overflow-wrap: anywhere; }
.answer::before { content: ""; position: absolute; top: -1px; left: 32px; width: 48px; height: 2px; background: var(--yellow); }
.answer > h3:first-child { margin: 0 0 8px; color: var(--muted); font-size: 12px; font-weight: 400; }
.original-question { margin: 0 0 24px; padding-bottom: 22px; border-bottom: 1px solid var(--line); color: #cbd4dc; font-size: 15px; line-height: 1.9; }
.answer-label { margin: 0 0 5px; color: var(--yellow); font-size: 12px; font-weight: 600; letter-spacing: 0.08em; }
.as-of-label { margin: 6px 0; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.answer-main { margin: 23px 0 30px; color: #d8dfe5; font-size: 16px; line-height: 1.95; }
.answer-main strong { color: #f2f5f7; font-weight: 650; }
.answer-main h4 { margin: 26px 0 10px; padding-left: 12px; border-left: 2px solid var(--cyan); font-size: 17px; line-height: 1.8; }
.answer-main h4:first-child { margin-top: 0; }
.answer-main h4 + br { display: none; }
.answer-main .citation { padding: 0 4px; border-radius: 2px; background: #86dadd0b; text-decoration: none; }
.answer h3 { margin: 20px 0 12px; font-size: 16px; }
.answer > details { margin-top: 0; }
.answer details p { color: #c1cbd4; line-height: 1.85; }
.answer-evidence time { margin-left: 8px; color: var(--muted); font-size: 12px; }
.disclaimer { margin: 22px 0 0; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.9; }
.context-list { padding-left: 22px; line-height: 1.8; }
.context-list li { padding: 10px 6px; scroll-margin-top: 24px; }
.context-list li + li { border-top: 1px solid var(--line-soft); }
.context-list p { margin: 6px 0; }
.context-list small { color: var(--muted); font-size: 12px; }
.context-list a { font-size: 13px; }
.context-list li:target { border-radius: 4px; background: #86dadd0a; outline: 1px solid #486368; }
.table-wrap { max-width: 100%; overflow-x: auto; margin: 5px 0 18px; border: 1px solid var(--line); border-radius: 4px; scrollbar-width: thin; scrollbar-color: #60707c var(--recess); }
table { width: 100%; border-collapse: collapse; font-size: 12px; font-variant-numeric: tabular-nums; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--line-soft); text-align: right; white-space: nowrap; }
th { color: var(--muted); background: var(--recess); font-weight: 500; }
td { color: #d0d9e0; }
th:first-child, td:first-child { text-align: left; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: #86dadd05; }
#dialogue-history { margin-top: 24px; padding: 5px 20px; border: 1px solid var(--line); border-radius: 4px; background: var(--recess); overflow-wrap: anywhere; }
#dialogue-history > details { margin: 0; border: 0; }
#dialogue-history section { padding: 14px 0; border-top: 1px solid var(--line); }
#dialogue-history h3 { margin: 0 0 12px; color: #cbd4dc; font-size: 14px; }
#dialogue-history p { color: var(--muted); font-size: 14px; line-height: 1.9; }
pre { max-width: 100%; overflow-x: auto; padding: 18px; border: 1px solid var(--line); border-radius: 4px; background: var(--recess); color: var(--ink); font-size: 13px; line-height: 1.8; }
.site-footer { display: flex; justify-content: space-between; gap: 16px; max-width: 1224px; margin: 0 auto; padding: 24px 36px 36px; color: var(--muted); font-size: 11px; }
.footer-wordmark { color: #929eaa; font-size: 10px; letter-spacing: 0.22em; }
.hidden { display: none !important; }
#toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  max-width: min(440px, calc(100vw - 32px));
  padding: 14px 20px;
  border: 1px solid #536b69;
  border-left: 3px solid var(--yellow);
  border-radius: 5px;
  color: var(--ink);
  background: #232d33;
  box-shadow: 0 12px 36px #0006;
  font-size: 13px;
  line-height: 1.8;
  overflow-wrap: anywhere;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 160ms, transform 160ms;
}
#toast.show { opacity: 1; transform: translateY(0); }
#toast.error { color: #ffe0dc; border-color: #7b4e51; border-left-color: var(--red); background: #32262c; }

.login-page { min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: center; padding: 48px 36px 24px; }
.login-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 424px); align-items: center; gap: 80px; width: min(1056px, 100%); margin: auto; }
.login-intro { position: relative; isolation: isolate; padding: 30px 0 36px; }
.login-brand { display: flex; align-items: center; gap: 18px; margin-bottom: 30px; }
.login-brand .brand-mark { width: 50px; height: 50px; }
.login-brand .eyebrow { margin: 0; font-size: 12px; }
.login-intro .brand-title { width: 420px; max-width: 100%; }
.login-wordmark { width: 230px; max-width: 100%; margin: 16px 0 32px; color: var(--yellow); }
.footer-wordmark { width: 130px; }
.login-manifesto { margin: 0; color: #cbd4dd; font-size: 25px; font-weight: 400; line-height: 1.9; letter-spacing: 0.04em; }
.research-principles { display: flex; gap: 24px; margin-top: 36px; color: var(--muted); font-size: 12px; letter-spacing: 0.2em; }
.research-principles span + span { padding-left: 24px; border-left: 1px solid #48525c; }
.brand-blueprint { position: absolute; z-index: -1; right: -18px; bottom: 5px; width: 235px; height: 235px; opacity: 0.4; pointer-events: none; }
.brand-blueprint i { position: absolute; inset: 0; border: 1px solid #485443; transform: rotate(-25deg); }
.brand-blueprint i:nth-child(2) { inset: 34px; border-color: #3c555c; }
.brand-blueprint i:nth-child(3) { inset: 68px; border-color: #545d35; }
.login-card { position: relative; padding: 35px; border: 1px solid #46515b; border-radius: 8px; background: linear-gradient(135deg, #ffffff02, transparent 60%), var(--surface); box-shadow: var(--shadow); }
.login-card::before { content: ""; position: absolute; top: -1px; left: 35px; width: 45px; height: 2px; background: var(--yellow); }
.login-card h2 { font-size: 25px; }
.login-card form { display: grid; gap: 22px; margin-top: 30px; }
.login-card input { min-height: 48px; font-size: 16px; }
.login-card .button { justify-content: space-between; min-height: 48px; margin-top: 3px; }
.login-disclaimer { margin: 26px 0 0; padding-top: 21px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.9; }
.login-footer { padding-top: 38px; text-align: center; color: var(--muted); font-size: 11px; letter-spacing: 0.15em; }

@media (max-width: 1100px) {
  .hero { padding-top: 30px; }
  .brand { gap: 16px; }
  .brand-mark { width: 52px; height: 52px; }
  .status-panel { max-width: 260px; }
  .logic-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logic-flow > :last-child { grid-column: 1 / -1; }
  .login-layout { gap: 40px; }
}
@media (max-width: 760px) {
  .hero { flex-direction: column; align-items: stretch; gap: 20px; padding: 27px 20px 23px; }
  .brand { gap: 13px; }
  .brand-mark { width: 44px; height: 44px; }
  .eyebrow { font-size: 9px; letter-spacing: 0.06em; }
  .wordmark { width: 138px; }
  .brand-title { width: 244px; }
  .brand-divider { padding: 0 8px; }
  .brand .subtitle { font-size: 11px; }
  .status-panel { max-width: none; flex-direction: row; justify-content: space-between; align-items: center; gap: 12px; }
  .terminal-label { flex-shrink: 0; font-size: 10px; letter-spacing: 0.12em; }
  .status { font-size: 10px; padding: 5px 8px; }
  .portal-main { padding: 0 16px; }
  .tabs { gap: 0; padding: 0 10px; }
  .tab { flex: 1; min-width: 0; min-height: 53px; font-size: 14px; }
  .panel { padding: 23px 18px; }
  h2 { font-size: 22px; }
  .panel-heading { align-items: flex-start; flex-direction: column; gap: 15px; margin-bottom: 18px; }
  .section-kicker { font-size: 10px; }
  .market-button { min-height: 42px; font-size: 12px; }
  .notice { padding: 11px 12px; font-size: 12px; }
  .identity-notice { gap: 9px; }
  #dialogue-status { font-size: 12px; }
  .question-composer { padding: 16px 14px; }
  .composer-heading { gap: 5px; }
  .composer-heading > span { font-size: 11px; }
  textarea { min-height: 168px; padding: 10px 12px; font-size: 16px; line-height: 1.8; }
  .composer-options { gap: 8px; margin-top: 15px; }
  .date-option { width: 100%; }
  .date-option small { font-size: 10px; margin-left: 3px; }
  input[type="date"] { font-size: 16px; }
  .live-option { font-size: 12px; }
  .actions { gap: 9px; margin-top: 12px; padding-top: 14px; }
  .actions .button { flex: 1; }
  #ask-button { order: -1; flex-basis: 100%; margin-left: 0; }
  .card-list, .case-context, .logic-flow { grid-template-columns: minmax(0, 1fr); }
  .logic-flow { gap: 12px; }
  .logic-flow .principle-card { padding: 18px; }
  .logic-flow h3 { display: inline; margin-left: 12px; }
  .logic-flow p { margin-top: 13px; }
  .principle-card { padding: 18px; }
  .subsection-heading { margin-top: 28px; padding-top: 23px; }
  .subsection-heading h2 { font-size: 20px; }
  .principle-card h3, .case-card > h3 { font-size: 17px; }
  .case-context { padding: 16px; gap: 20px; }
  dl { grid-template-columns: 58px minmax(0, 1fr); gap: 10px; font-size: 13px; }
  .evidence-list, .answer-evidence { padding-left: 18px; }
  blockquote { padding: 9px 11px; font-size: 13px; }
  .answer { padding: 24px 17px; }
  .answer::before { left: 17px; }
  .answer-main { font-size: 15px; line-height: 1.95; }
  .answer-main h4 { font-size: 16px; }
  .original-question { font-size: 14px; }
  .context-list { padding-left: 16px; font-size: 13px; }
  th, td { padding: 10px 12px; }
  #dialogue-history { padding: 4px 14px; }
  .site-footer { justify-content: center; padding: 22px 16px; font-size: 10px; }
  .footer-wordmark { display: none; }
  #toast { right: 16px; bottom: 16px; bottom: max(16px, env(safe-area-inset-bottom)); font-size: 12px; }
  .login-page { justify-content: flex-start; padding: 28px 24px 20px; }
  .login-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; max-width: 440px; }
  .login-intro { padding: 0; }
  .login-brand { gap: 12px; margin-bottom: 16px; }
  .login-brand .brand-mark { width: 36px; height: 36px; }
  .login-brand .eyebrow { font-size: 10px; }
  .login-intro .brand-title { width: 310px; }
  .login-wordmark { width: 184px; margin: 12px 0 18px; }
  .login-manifesto { font-size: 17px; line-height: 1.8; }
  .research-principles, .brand-blueprint { display: none; }
  .login-card { padding: 25px 22px; }
  .login-card::before { left: 22px; }
  .login-card h2 { font-size: 22px; }
  .login-card .subtitle { font-size: 12px; }
  .login-card form { gap: 19px; margin-top: 23px; }
  .login-card input { min-height: 46px; }
  .login-disclaimer { margin-top: 22px; padding-top: 18px; font-size: 11px; }
  .login-footer { padding-top: 26px; font-size: 10px; }
}
@media (max-width: 360px) {
  .hero { padding-right: 16px; padding-left: 16px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand { gap: 9px; }
  .brand-divider { padding: 0 5px; }
  .eyebrow { font-size: 8px; }
  .portal-main { padding: 0 10px; }
  .panel { padding: 20px 12px; }
  .login-page { padding-right: 18px; padding-left: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .tab.active { border-bottom: 2px solid Highlight; }
  .button.primary, .status, .notice, .principle-card { border-color: ButtonText; }
  .live-option input { accent-color: auto; }
}