:root {
  --paper: #faf7f2;
  --sand: #efe5d8;
  --ink: #302a25;
  --muted: #75695f;
  --accent: #aa603f;
  --accent-dark: #8b482e;
  --line: #ded3c7;
  --dark: #352a23;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 40px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
button { border-radius: 0; }
h1, h2, h3, h4, p { margin: 0; }
img { display: block; max-width: 100%; height: auto; }
svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
::selection { color: var(--paper); background: var(--accent); }
.frame { width: min(1240px, calc(100% - 144px)); margin-inline: auto; }
.section-space { margin-top: 132px; }
.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.skip-link { position: fixed; z-index: 100; left: 16px; top: 12px; padding: 12px 18px; color: white; background: var(--accent); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; width: fit-content; min-height: 56px; padding: 16px 27px; background: var(--accent); border: 1px solid var(--accent); border-radius: 4px; color: white; font-size: 17px; font-weight: 500; transition: background .2s, border-color .2s; }
.button:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.button svg { width: 19px; height: 19px; }
.text-link { display: inline-flex; align-items: center; gap: 20px; width: fit-content; padding-bottom: 8px; border-bottom: 1px solid currentColor; color: var(--accent); font-size: 17px; line-height: 1.4; }
.text-link svg { width: 19px; height: 19px; transition: transform .2s; }
.text-link:hover svg { transform: translate(2px, -2px); }

.site-header { position: relative; z-index: 5; height: 104px; display: flex; align-items: center; justify-content: space-between; }
.wordmark { display: block; width: 151px; }
.wordmark img { width: 100%; }
.site-header nav { display: flex; align-items: center; gap: 52px; margin-left: 22px; }
.site-header nav a { padding: 12px 0; font-size: 15px; transition: color .2s; }
.site-header nav a:hover { color: var(--accent); }
.header-cta { min-height: 42px; padding: 10px 22px; font-size: 14px; }
.menu-toggle { display: none; }

.hero { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 64px; padding-top: 44px; padding-bottom: 56px; }
.hero-copy { padding-bottom: 10px; }
.hero h1 { font-size: clamp(54px, 5.65vw, 82px); font-weight: 600; line-height: 1.24; letter-spacing: -.045em; }
.hero-description { margin-top: 32px; color: var(--muted); font-size: clamp(18px, 1.55vw, 22px); line-height: 1.8; letter-spacing: .01em; }
.hero .button { margin-top: 38px; }
.hero-visual { overflow: hidden; border-radius: 3px; }
.hero-visual img { width: 100%; aspect-ratio: 1 / 1.03; object-fit: cover; }

.products { margin-top: 84px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 70px; }
.section-heading h2 { font-size: clamp(34px, 3.4vw, 48px); line-height: 1.35; font-weight: 550; letter-spacing: -.04em; }
.section-heading > p { color: var(--muted); font-size: 17px; line-height: 1.85; padding-bottom: 3px; }
.product-feature { display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); align-items: center; gap: 72px; }
.product-feature + .product-feature { margin-top: 128px; }
.feature-reverse { grid-template-columns: minmax(0, 1.22fr) minmax(0, .78fr); }
.feature-reverse .feature-copy { grid-column: 2; grid-row: 1; }
.feature-reverse .semantic-visual { grid-column: 1; grid-row: 1; }
.product-heading { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.product-logo { width: 29px; height: 29px; object-fit: contain; }
.product-heading h3 { font-size: 20px; font-weight: 450; letter-spacing: -.015em; }
.product-tagline { margin-bottom: 22px; font-size: clamp(29px, 2.8vw, 39px); line-height: 1.42; font-weight: 550; letter-spacing: -.045em; }
.product-description { max-width: 410px; color: var(--muted); font-size: 17px; line-height: 1.95; }
.feature-facts { display: flex; flex-wrap: wrap; gap: 8px 17px; margin-top: 28px; font-size: 14px; line-height: 1.6; }
.feature-facts span + span::before { content: "/"; margin-right: 17px; color: #bd896f; }
.feature-copy > .text-link { margin-top: 40px; }

.demo-stage { padding: 28px; background: var(--sand); border-radius: 5px; }
.work-demo { overflow: hidden; border: 1px solid #e3d9ce; border-radius: 8px; background: #fdfbf8; box-shadow: 0 10px 36px #6a4d3010; }
.demo-window-top { height: 38px; padding-inline: 16px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid #eee6de; font-size: 10px; color: #85796e; }
.window-dots { display: flex; gap: 5px; }
.window-dots i { width: 5px; height: 5px; border: 1px solid #b5a697; border-radius: 50%; }
.demo-body { display: grid; grid-template-columns: 119px minmax(0, 1fr); min-height: 346px; }
.demo-sidebar { display: flex; flex-direction: column; align-items: stretch; padding: 21px 10px 17px; background: #f5f0e9; border-right: 1px solid #eee6de; }
.demo-sidebar strong { padding: 0 5px; margin-bottom: 25px; font-size: 12px; font-weight: 600; }
.demo-sidebar > span { display: flex; align-items: center; gap: 7px; padding: 10px 8px; color: #776b60; font-size: 11px; white-space: nowrap; }
.demo-sidebar svg { width: 14px; height: 14px; }
.demo-sidebar .selected { background: #ead8c7; border-radius: 4px; color: #5d3c29; }
.demo-sidebar .sidebar-bottom { margin-top: auto; color: #897d71; font-size: 10px; }
.demo-content { display: flex; flex-direction: column; justify-content: center; min-width: 0; padding: 30px 20px 26px; }
.demo-content h4 { text-align: center; font-size: 21px; font-weight: 550; letter-spacing: -.035em; }
.demo-content > p { margin-top: 10px; color: #8b7f74; text-align: center; font-size: 11px; line-height: 1.6; }
.demo-prompt { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; min-height: 97px; margin-top: 27px; padding: 16px; border: 1px solid #dfd3c7; border-radius: 6px; font-size: 12px; line-height: 1.8; }
.demo-prompt > svg { align-self: flex-end; width: 26px; height: 26px; padding: 5px; color: #fff; background: var(--accent); border-radius: 3px; }
.demo-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; margin-top: 15px; }
.demo-options button { display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 7px; min-height: 63px; padding: 9px 4px; border: 1px solid #e8dfd5; border-radius: 4px; background: #f7f3ed; font-size: 11px; white-space: nowrap; transition: border-color .2s, background .2s; }
.demo-options button svg { width: 17px; height: 17px; color: var(--accent); }
.demo-options button:hover, .demo-options button.active { background: #eee0d2; border-color: #cba98d; }
.demo-note { margin-top: 15px; color: #928376; text-align: center; font-size: 10px; }

.semantic-visual { position: relative; min-width: 0; height: 420px; overflow: hidden; background: var(--sand); border-radius: 5px; }
.diagram-lines { position: absolute; inset: 0; width: 100%; height: 100%; color: #c79677; stroke-width: 1; }
.diagram-lines circle { fill: #b77b58; stroke: none; }
.knowledge-node, .knowledge-core { position: absolute; display: flex; align-items: center; justify-content: center; transform: translate(-50%, -50%); }
.knowledge-node { width: 108px; height: 88px; flex-direction: column; gap: 12px; border: 1px solid #fff8ed; border-radius: 7px; background: #faf6ef; color: #5b4a3e; font-size: 12px; }
.knowledge-node > svg { width: 24px; height: 24px; color: var(--accent); }
.node-document { left: 16.67%; top: 23%; }
.node-experience { left: 16.67%; top: 77%; }
.node-team { left: 83.33%; top: 23%; }
.node-agent { left: 83.33%; top: 77%; }
.knowledge-core { top: 50%; left: 50%; width: 166px; height: 172px; flex-direction: column; border: 1px solid #fefcf7; border-radius: 8px; background: #fcf9f2; box-shadow: 0 9px 28px #785a3810; }
.knowledge-core > svg { width: 35px; height: 35px; color: var(--accent); margin-bottom: 18px; }
.knowledge-core strong { font-size: 20px; font-weight: 500; }
.knowledge-core > span { margin-top: 12px; font-size: 10px; color: #897362; }
.diagram-caption { position: absolute; bottom: 18px; left: 25px; color: #947d6b; font-size: 11px; letter-spacing: .03em; }

.product-heading .product-letter { width: 29px; height: 29px; font-size: 19px; }
.product-origin { margin-top: 19px; max-width: 360px; color: #8b7d70; font-size: 12px; line-height: 1.8; }
.workflow-visual { height: 420px; background: #eee3d6; }
.workflow-lines { position: absolute; inset: 0; width: 100%; height: 100%; color: #b48261; stroke-width: 1.15; }
.workflow-lines-small { display: none; }
.workflow-route { marker-end: url(#workflow-arrow); }
.workflow-branch { stroke: #c4ac95; stroke-dasharray: 4 4; marker-end: url(#workflow-arrow); }
.workflow-loop { stroke: #aa603f; stroke-dasharray: 4 3; marker-end: url(#workflow-arrow); }
.workflow-node { position: absolute; display: flex; align-items: center; justify-content: center; transform: translate(-50%, -50%); color: #5a4435; background: #faf6ef; border: 1px solid #d9bda6; border-radius: 6px; }
.workflow-start, .workflow-end { top: 58.1%; width: 10.67%; height: 44px; border-radius: 24px; font-size: 12px; }
.workflow-start { left: 8.67%; }
.workflow-end { left: 91.33%; }
.workflow-develop, .workflow-audit { top: 58.1%; width: 24.33%; height: 88px; flex-wrap: wrap; align-content: center; gap: 9px 8px; background: #fcf9f3; border-color: #c89e7c; }
.workflow-develop { left: 35%; }
.workflow-audit { left: 65%; }
.workflow-develop > svg, .workflow-audit > svg { width: 18px; height: 18px; color: var(--accent); }
.workflow-node strong { font-size: 14px; font-weight: 500; }
.workflow-develop > span, .workflow-audit > span { flex-basis: 100%; text-align: center; color: #99806c; font-size: 10px; }
.workflow-subflow { top: 23.1%; left: 50%; width: 23.33%; height: 74px; gap: 11px; border-color: #d5c0ad; }
.workflow-subflow > svg { width: 22px; height: 22px; color: #a27f62; }
.workflow-subflow > div { display: flex; flex-direction: column; gap: 7px; }
.workflow-subflow strong { font-size: 13px; }
.workflow-subflow span { color: #99806c; font-size: 10px; }
.workflow-event { position: absolute; top: 43%; transform: translateX(-50%); color: #967557; font-size: 10px; white-space: nowrap; }
.workflow-developed { left: 50%; }
.workflow-approved { left: 81.67%; }
.workflow-return { position: absolute; left: 50%; top: 79%; transform: translateX(-50%); color: #a25d3e; font-size: 11px; white-space: nowrap; }
.workflow-return > span { margin-left: 7px; color: #9b7b64; }

.qa-visual, .discussion-visual { display: grid; place-items: center; padding-bottom: 18px; }
.qa-content { display: grid; grid-template-columns: minmax(0, 1fr) 28px minmax(0, 1.25fr); align-items: center; gap: 21px; width: min(520px, calc(100% - 72px)); }
.qa-documents { display: flex; flex-direction: column; gap: 12px; }
.qa-label { margin-bottom: 6px; color: #8b705c; font-size: 12px; letter-spacing: .06em; }
.qa-documents > div { display: flex; align-items: center; gap: 11px; min-height: 53px; padding: 13px 16px; border: 1px solid #e0ccba; border-radius: 5px; background: #f8f2e9; font-size: 13px; color: #6c5544; }
.qa-documents > div:nth-child(3) { margin-left: 7px; }
.qa-documents > div:nth-child(4) { margin-left: 14px; }
.qa-documents svg { width: 20px; height: 20px; color: #ac7a57; }
.qa-bridge { width: 28px; height: 28px; color: #bd987a; }
.qa-answer { display: flex; align-items: flex-start; flex-direction: column; padding: 25px 24px 23px; border: 1px solid #d7b99f; border-radius: 7px; background: #fcf9f2; color: #5c4432; }
.qa-answer-icon { width: 27px; height: 27px; margin-bottom: 13px; color: var(--accent); }
.qa-answer > strong { font-size: 20px; font-weight: 500; }
.qa-answer > span { margin-top: 8px; color: #92775f; font-size: 12px; }
.qa-reference { display: grid; grid-template-columns: 18px 1fr; column-gap: 8px; row-gap: 9px; width: 100%; margin-top: 25px; padding-top: 20px; border-top: 1px solid #e4d7c9; }
.qa-reference > svg { width: 17px; height: 17px; color: var(--accent); }
.qa-reference strong { font-size: 13px; font-weight: 500; }
.qa-reference > span { grid-column: 1 / -1; color: #92775f; font-size: 11px; line-height: 1.6; }
.discussion-content { width: min(465px, calc(100% - 80px)); }
.discussion-agents { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.discussion-agents > div { display: flex; align-items: center; flex-direction: column; gap: 11px; }
.discussion-agents > div > span { display: grid; place-items: center; width: 56px; height: 56px; border: 1px solid #d4b598; border-radius: 50%; background: #faf4eb; color: #a26b45; }
.discussion-agents > div:nth-child(2) > span { background: #ead8c4; color: #89502f; }
.discussion-agents > div:nth-child(3) > span { background: #f6eddf; color: #97775d; }
.discussion-agents svg { width: 24px; height: 24px; }
.discussion-agents strong { font-size: 12px; font-weight: 450; color: #8c715b; }
.discussion-rounds { position: relative; display: flex; align-items: center; justify-content: center; gap: 11px; margin: 27px 0 24px; padding: 17px 0; border-top: 1px solid #ceb397; border-bottom: 1px solid #ceb397; color: #78543a; font-size: 14px; }
.discussion-rounds::before { position: absolute; content: ""; left: 50%; top: -18px; width: 1px; height: 18px; background: #ceb397; }
.discussion-rounds svg { width: 20px; height: 20px; }
.discussion-outcomes { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.discussion-outcomes > div { display: grid; grid-template-columns: 20px 1fr; align-items: center; column-gap: 10px; row-gap: 10px; padding: 20px 17px; border: 1px solid #dcc7b3; border-radius: 5px; background: #faf5ed; }
.discussion-outcomes svg { width: 20px; height: 20px; color: var(--accent); }
.discussion-outcomes strong { font-size: 13px; font-weight: 500; white-space: nowrap; }
.discussion-outcomes span { grid-column: 1 / -1; color: #92775f; font-size: 11px; line-height: 1.6; }

.directory .section-heading { margin-bottom: 48px; }
.directory-list { border-top: 1px solid var(--line); }
.directory-row { display: grid; grid-template-columns: 295px minmax(0, 1fr) 30px; align-items: center; column-gap: 60px; min-height: 156px; padding: 34px 9px 34px 0; border-bottom: 1px solid var(--line); }
.directory-name { display: flex; align-items: center; gap: 22px; }
.directory-name img { width: 38px; height: 38px; object-fit: contain; }
.directory-name h3 { font-size: 24px; font-weight: 500; letter-spacing: -.02em; }
.letter-mark { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid #c7a58d; border-radius: 5px; color: var(--accent); font-size: 23px; font-family: "Songti SC", "STSong", serif; }
.directory-description strong { font-size: 19px; font-weight: 450; line-height: 1.6; }
.directory-description p { margin-top: 9px; color: var(--muted); font-size: 15px; line-height: 1.8; }
.directory-arrow { width: 25px; height: 25px; color: var(--accent); transition: transform .2s; }
.directory-row:hover .directory-arrow { transform: translate(3px, -3px); }
.directory-row:hover h3 { color: var(--accent); }

.scenarios .section-heading { margin-bottom: 45px; }
.scenario-tabs { display: flex; align-items: center; gap: 54px; border-bottom: 1px solid var(--line); }
.scenario-tabs button { position: relative; padding: 17px 0; border: 0; background: none; color: var(--muted); font-size: 17px; line-height: 1.5; }
.scenario-tabs button[aria-selected="true"] { color: var(--accent); }
.scenario-tabs button[aria-selected="true"]::after { position: absolute; content: ""; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--accent); }
.scenario-panel { display: flex; flex-direction: column; justify-content: space-between; min-height: 326px; margin-top: 30px; padding: 50px 58px; background: var(--sand); border-radius: 5px; }
.scenario-copy { display: grid; grid-template-columns: 1fr 1fr; column-gap: 80px; align-items: start; }
.scenario-panel h3 { font-size: clamp(26px, 2.4vw, 34px); line-height: 1.5; font-weight: 500; letter-spacing: -.035em; }
.scenario-panel p { color: #756454; font-size: 17px; line-height: 1.9; }
.scenario-products { display: flex; flex-wrap: wrap; gap: 20px 36px; margin-top: 36px; }
.scenario-products a { display: inline-flex; align-items: center; gap: 20px; padding-bottom: 7px; border-bottom: 1px solid #c7a087; color: #8b482e; font-size: 16px; }
.scenario-products svg { width: 18px; height: 18px; transition: transform .2s; }
.scenario-products a:hover svg { transform: translate(2px, -2px); }

.about { padding: 112px 0 96px; color: var(--paper); background: var(--dark); }
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; }
.about h2 { font-size: clamp(40px, 4.1vw, 58px); font-weight: 500; line-height: 1.38; letter-spacing: -.045em; }
.about-copy { padding-top: 2px; }
.about-copy .about-belief { margin-bottom: 25px; color: #f1e6d8; font-size: 22px; line-height: 1.7; }
.about-copy > p { max-width: 490px; color: #baa99a; font-size: 16px; line-height: 1.95; }
.about .text-link { margin-top: 30px; color: #eedbc6; }
.site-footer { color: var(--paper); background: var(--dark); }
.footer-main { display: flex; justify-content: space-between; align-items: center; gap: 70px; border-top: 1px solid #665246; padding: 64px 0 70px; }
.footer-wordmark { width: 320px; max-width: 48%; }
.footer-wordmark img { width: 100%; }
.footer-action { min-width: 220px; }
.footer-action p { margin-bottom: 19px; font-size: 18px; color: #d8c9b9; }
.footer-action .text-link { color: #f0dfce; font-size: 15px; }
.footer-bottom { display: flex; align-items: center; flex-wrap: wrap; gap: 22px 36px; padding: 30px 0; border-top: 1px solid #55473d; color: #af9d8b; font-size: 12px; line-height: 1.6; }
.footer-bottom > a { display: inline-flex; align-items: center; gap: 9px; }
.footer-bottom > a:hover { color: var(--paper); }
.footer-bottom svg { width: 13px; height: 13px; }
.footer-bottom .back-top { margin-left: auto; }
.about :focus-visible, .site-footer :focus-visible { outline-color: #e4b08b; }

.entering { animation: arrive .7s both; }
@keyframes arrive { from { opacity: .35; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

@media (min-width: 1600px) { .hero { padding-top: 70px; padding-bottom: 70px; } }
@media (max-width: 1199px) {
  .frame { width: calc(100% - 96px); }
  .hero { gap: 44px; padding-top: 46px; }
  .hero h1 { font-size: clamp(49px, 5.6vw, 67px); }
  .hero-description { font-size: 18px; }
  .section-space { margin-top: 112px; }
  .section-heading { margin-bottom: 58px; }
  .section-heading h2 { font-size: 39px; }
  .section-heading > p { font-size: 15px; }
  .product-feature, .feature-reverse { gap: 44px; }
  .product-tagline { font-size: 30px; }
  .product-description { font-size: 16px; }
  .demo-stage { padding: 20px; }
  .demo-body { grid-template-columns: 96px minmax(0, 1fr); }
  .demo-sidebar { padding-inline: 7px; }
  .demo-sidebar strong { font-size: 10px; }
  .demo-sidebar > span { padding-inline: 5px; font-size: 10px; gap: 5px; }
  .demo-content { padding: 26px 16px; }
  .demo-content h4 { font-size: 18px; }
  .demo-content > p { font-size: 10px; }
  .demo-options { gap: 5px; }
  .demo-options button { font-size: 10px; }
  .semantic-visual { height: 375px; }
  .knowledge-core { width: 146px; height: 155px; }
  .knowledge-node { width: 91px; height: 82px; }
  .workflow-visual { height: 420px; }
  .workflow-node strong { font-size: 12px; }
  .workflow-subflow { gap: 7px; }
  .workflow-subflow > svg { width: 18px; height: 18px; }
  .qa-content { width: calc(100% - 44px); gap: 13px; grid-template-columns: minmax(0, 1fr) 24px minmax(0, 1.25fr); }
  .qa-documents > div { padding-inline: 11px; font-size: 12px; gap: 8px; }
  .qa-answer { padding: 23px 18px; }
  .qa-answer > strong { font-size: 19px; }
  .discussion-content { width: calc(100% - 52px); }
  .discussion-outcomes { gap: 12px; }
  .discussion-outcomes > div { padding: 18px 12px; gap: 9px 7px; }
  .discussion-outcomes strong { font-size: 12px; }
  .directory-row { grid-template-columns: 240px minmax(0, 1fr) 25px; column-gap: 35px; }
  .directory-name { gap: 17px; }
  .directory-name h3 { font-size: 21px; }
  .directory-description strong { font-size: 17px; }
  .scenario-panel { padding: 44px; }
  .scenario-copy { column-gap: 50px; }
  .scenario-panel p { font-size: 16px; }
  .about-inner { gap: 70px; }
}

@media (max-width: 900px) {
  .frame { width: calc(100% - 64px); }
  .site-header { height: 88px; }
  .wordmark { width: 134px; }
  .site-header nav { gap: 20px; margin-left: 0; }
  .site-header nav a { font-size: 14px; }
  .header-cta { padding: 9px 17px; font-size: 13px; }
  .hero { gap: 30px; padding-top: 36px; padding-bottom: 34px; }
  .hero h1 { font-size: clamp(40px, 5.9vw, 53px); }
  .hero-description { margin-top: 23px; font-size: 16px; line-height: 1.85; }
  .hero .button { margin-top: 28px; min-height: 49px; font-size: 15px; padding: 13px 20px; }
  .section-space { margin-top: 104px; }
  .section-heading { gap: 28px; }
  .section-heading h2 { font-size: 33px; }
  .product-feature, .feature-reverse { grid-template-columns: 1fr; gap: 38px; }
  .feature-reverse .feature-copy, .feature-reverse .semantic-visual { grid-column: auto; grid-row: auto; }
  .feature-copy { max-width: 570px; }
  .product-heading { margin-bottom: 16px; }
  .product-tagline { margin-bottom: 18px; font-size: 35px; }
  .product-description { max-width: 550px; }
  .feature-facts { margin-top: 23px; }
  .feature-copy > .text-link { margin-top: 27px; }
  .demo-stage { padding: 30px; }
  .demo-body { grid-template-columns: 140px minmax(0, 1fr); }
  .demo-sidebar { padding: 23px 13px; }
  .demo-sidebar strong { font-size: 13px; }
  .demo-sidebar > span { padding: 11px 8px; font-size: 12px; }
  .demo-content { padding: 35px 28px 26px; }
  .demo-content h4 { font-size: 23px; }
  .demo-content > p { font-size: 12px; }
  .demo-prompt { font-size: 13px; }
  .demo-options button { font-size: 12px; }
  .semantic-visual { height: 410px; }
  .knowledge-node { width: 118px; height: 95px; font-size: 13px; }
  .knowledge-core { width: 176px; height: 180px; }
  .knowledge-core > span { font-size: 11px; }
  .workflow-visual { height: 420px; }
  .workflow-node strong { font-size: 14px; }
  .workflow-subflow { gap: 11px; }
  .workflow-subflow > svg { width: 22px; height: 22px; }
  .qa-content { width: min(520px, calc(100% - 72px)); gap: 21px; grid-template-columns: minmax(0, 1fr) 28px minmax(0, 1.25fr); }
  .qa-documents > div { padding-inline: 16px; font-size: 13px; gap: 11px; }
  .qa-answer { padding: 25px 24px 23px; }
  .qa-answer > strong { font-size: 20px; }
  .discussion-content { width: min(465px, calc(100% - 80px)); }
  .discussion-outcomes { gap: 20px; }
  .discussion-outcomes > div { padding: 20px 17px; gap: 10px; }
  .discussion-outcomes strong { font-size: 13px; }
  .directory-row { grid-template-columns: 195px minmax(0, 1fr) 25px; column-gap: 25px; min-height: 155px; }
  .directory-name { gap: 15px; }
  .directory-name h3 { font-size: 19px; }
  .directory-name img, .letter-mark { width: 32px; height: 32px; }
  .directory-description strong { font-size: 16px; }
  .directory-description p { font-size: 14px; }
  .scenario-tabs { justify-content: space-between; gap: 20px; }
  .scenario-tabs button { font-size: 16px; }
  .scenario-copy { grid-template-columns: 1fr; gap: 22px; }
  .scenario-panel { padding: 40px; min-height: 340px; }
  .scenario-panel h3 { font-size: 30px; }
  .scenario-panel p { max-width: 570px; }
  .about { padding: 86px 0 76px; }
  .about-inner { gap: 44px; }
  .about h2 { font-size: 40px; }
  .about-copy .about-belief { font-size: 18px; }
  .about-copy > p { font-size: 14px; }
  .footer-main { padding: 55px 0; }
  .footer-wordmark { width: 270px; }
  .footer-action { min-width: 180px; }
  .footer-bottom { gap: 17px 25px; }
  .footer-bottom > span:nth-child(2) { display: none; }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 20px; }
  .frame { width: calc(100% - 44px); }
  .site-header { height: 78px; }
  .wordmark { width: 126px; }
  .header-cta { margin-left: auto; margin-right: 20px; min-height: 36px; padding: 8px 13px; font-size: 12px; }
  .menu-toggle { display: flex; flex-direction: column; justify-content: center; gap: 6px; width: 27px; height: 40px; padding: 0; border: 0; background: none; }
  .menu-toggle span { width: 24px; height: 1px; background: var(--ink); transition: transform .2s; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-header nav { display: none; position: absolute; top: 72px; left: -22px; right: -22px; padding: 25px 26px 30px; flex-direction: column; align-items: stretch; gap: 7px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 18px 28px #302a250a; }
  .site-header nav.open { display: flex; }
  .site-header nav a { padding: 12px 0; font-size: 16px; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 42px; padding-bottom: 0; }
  .hero-copy { padding-bottom: 0; }
  .hero h1 { font-size: clamp(44px, 11.4vw, 68px); line-height: 1.23; letter-spacing: -.055em; }
  .hero-description { margin-top: 24px; font-size: 17px; }
  .hero .button { margin-top: 27px; min-height: 50px; padding-inline: 22px; font-size: 15px; }
  .hero-visual img { aspect-ratio: 1.15; object-position: center 57%; }
  .section-space, .products { margin-top: 92px; }
  .section-heading { display: block; margin-bottom: 42px; }
  .section-heading h2 { font-size: clamp(29px, 7.4vw, 37px); line-height: 1.45; letter-spacing: -.045em; }
  .section-heading > p { margin-top: 18px; font-size: 15px; line-height: 1.9; }
  .product-feature, .feature-reverse { gap: 31px; }
  .product-heading { gap: 11px; margin-bottom: 17px; }
  .product-heading h3 { font-size: 18px; }
  .product-logo { width: 27px; height: 27px; }
  .product-tagline { font-size: clamp(28px, 7.15vw, 35px); letter-spacing: -.045em; }
  .product-description { font-size: 16px; line-height: 1.9; }
  .feature-facts { gap: 8px 13px; font-size: 13px; margin-top: 23px; }
  .feature-facts span + span::before { margin-right: 13px; }
  .feature-copy > .text-link { margin-top: 27px; font-size: 16px; }
  .demo-stage { padding: 13px; margin-inline: -3px; }
  .demo-window-top { height: 32px; padding-inline: 12px; }
  .demo-body { display: block; min-height: 0; }
  .demo-sidebar { display: none; }
  .demo-content { padding: 29px 17px 23px; }
  .demo-content h4 { font-size: 22px; }
  .demo-content > p { font-size: 11px; }
  .demo-prompt { min-height: 103px; padding: 15px; margin-top: 24px; font-size: 13px; }
  .demo-options { gap: 7px; margin-top: 14px; }
  .demo-options button { min-height: 66px; padding-inline: 2px; font-size: 11px; }
  .demo-options svg { width: 18px; height: 18px; }
  .demo-note { margin-top: 17px; font-size: 10px; }
  .semantic-visual { height: 350px; margin-inline: -3px; }
  .knowledge-node { width: 88px; height: 76px; gap: 9px; font-size: 11px; }
  .knowledge-node > svg { width: 21px; height: 21px; }
  .knowledge-core { width: 138px; height: 142px; }
  .knowledge-core > svg { width: 29px; height: 29px; margin-bottom: 13px; }
  .knowledge-core strong { font-size: 18px; }
  .knowledge-core > span { margin-top: 11px; font-size: 9px; }
  .diagram-caption { left: 18px; bottom: 17px; font-size: 10px; }
  .product-origin { margin-top: 17px; font-size: 11px; }
  .workflow-visual { height: 460px; }
  .workflow-lines-wide { display: none; }
  .workflow-lines-small { display: block; }
  .workflow-start, .workflow-end { left: 45%; width: 66px; height: 40px; font-size: 12px; }
  .workflow-start { top: 8.91%; }
  .workflow-end { top: 85%; }
  .workflow-develop, .workflow-audit { left: 45%; width: 44.12%; height: 82px; gap: 10px 8px; }
  .workflow-develop { top: 33.04%; }
  .workflow-audit { top: 58.91%; }
  .workflow-node strong { font-size: 14px; }
  .workflow-subflow { top: 20%; left: 80.88%; width: 28%; height: 66px; gap: 7px; }
  .workflow-subflow > svg { width: 17px; height: 17px; }
  .workflow-subflow strong { font-size: 12px; }
  .workflow-subflow span { font-size: 9px; }
  .workflow-event { left: 45%; padding: 2px 6px; background: #eee3d6; font-size: 10px; }
  .workflow-developed { top: 44%; }
  .workflow-approved { top: 73%; }
  .workflow-return { left: 6.47%; top: 46%; padding: 7px 3px; writing-mode: vertical-rl; transform: translate(-50%, -50%); background: #eee3d6; font-size: 10px; }
  .workflow-return > span { display: none; }
  .qa-content { width: calc(100% - 38px); gap: 10px; grid-template-columns: minmax(0, 1fr) 20px minmax(0, 1.25fr); }
  .qa-label { font-size: 11px; }
  .qa-documents { gap: 11px; }
  .qa-documents > div { min-height: 47px; padding: 11px 8px; gap: 6px; font-size: 11px; white-space: nowrap; }
  .qa-documents > div:nth-child(3) { margin-left: 4px; }
  .qa-documents > div:nth-child(4) { margin-left: 8px; }
  .qa-documents svg { width: 17px; height: 17px; }
  .qa-bridge { width: 20px; height: 20px; }
  .qa-answer { padding: 21px 15px; }
  .qa-answer-icon { width: 23px; height: 23px; margin-bottom: 11px; }
  .qa-answer > strong { font-size: 18px; }
  .qa-answer > span { font-size: 10px; }
  .qa-reference { gap: 8px 5px; margin-top: 21px; padding-top: 17px; }
  .qa-reference strong { font-size: 12px; }
  .qa-reference > span { font-size: 10px; }
  .discussion-content { width: calc(100% - 38px); }
  .discussion-agents { gap: 20px; }
  .discussion-agents > div { gap: 9px; }
  .discussion-agents > div > span { width: 46px; height: 46px; }
  .discussion-agents strong { font-size: 11px; }
  .discussion-agents svg { width: 21px; height: 21px; }
  .discussion-rounds { margin: 24px 0 20px; padding: 14px 0; gap: 9px; font-size: 13px; }
  .discussion-outcomes { gap: 12px; }
  .discussion-outcomes > div { grid-template-columns: 17px 1fr; padding: 16px 12px; gap: 8px 7px; }
  .discussion-outcomes svg { width: 17px; height: 17px; }
  .discussion-outcomes strong { font-size: 11px; }
  .discussion-outcomes span { font-size: 10px; }
  .directory .section-heading { margin-bottom: 35px; }
  .directory-row { position: relative; grid-template-columns: minmax(0, 1fr) 26px; row-gap: 19px; padding: 29px 0 31px; min-height: 0; }
  .directory-name { gap: 14px; }
  .directory-name h3 { font-size: 22px; }
  .directory-name img, .letter-mark { width: 35px; height: 35px; }
  .directory-description { grid-row: 2; grid-column: 1 / -1; padding-right: 17px; }
  .directory-description strong { font-size: 17px; }
  .directory-description p { margin-top: 6px; font-size: 14px; line-height: 1.9; }
  .directory-arrow { grid-column: 2; grid-row: 1; width: 23px; height: 23px; }
  .scenarios .section-heading { margin-bottom: 28px; }
  .scenario-tabs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; border-bottom: 0; }
  .scenario-tabs button { padding: 13px 0; border-bottom: 1px solid var(--line); text-align: left; font-size: 15px; }
  .scenario-tabs button[aria-selected="true"]::after { bottom: -1px; }
  .scenario-panel { min-height: 369px; margin-top: 24px; padding: 31px 25px; }
  .scenario-copy { gap: 21px; }
  .scenario-panel h3 { font-size: 25px; line-height: 1.55; letter-spacing: -.045em; }
  .scenario-panel p { font-size: 15px; line-height: 1.9; }
  .scenario-products { gap: 19px 26px; margin-top: 30px; }
  .scenario-products a { gap: 13px; font-size: 14px; }
  .scenario-products svg { width: 16px; height: 16px; }
  .about { padding: 72px 0 62px; }
  .about-inner { grid-template-columns: 1fr; gap: 35px; }
  .about h2 { font-size: 43px; line-height: 1.35; }
  .about-copy .about-belief { font-size: 20px; margin-bottom: 22px; }
  .about-copy > p { font-size: 15px; line-height: 1.95; }
  .about .text-link { margin-top: 27px; font-size: 16px; }
  .footer-main { align-items: flex-start; gap: 34px; padding: 43px 0 45px; }
  .footer-wordmark { width: 174px; max-width: 47%; padding-top: 5px; }
  .footer-action { min-width: 0; }
  .footer-action p { font-size: 14px; line-height: 1.7; margin-bottom: 15px; }
  .footer-action .text-link { font-size: 13px; gap: 13px; }
  .footer-bottom { padding: 24px 0 29px; gap: 18px 20px; font-size: 11px; }
  .footer-bottom > a:not(.back-top) { order: 3; flex-basis: 100%; }
  .footer-bottom .back-top { margin-left: auto; }
}

@media (max-width: 374px) {
  .frame { width: calc(100% - 36px); }
  .header-cta { margin-right: 14px; }
  .wordmark { width: 114px; }
  .hero h1 { font-size: 42px; }
  .knowledge-node { width: 76px; }
  .knowledge-core { width: 127px; }
  .scenario-panel { padding-inline: 21px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}