:root {
  --paper: #fffdf7;
  --canvas: #f2ede3;
  --ink: #171713;
  --muted: #676158;
  --line: #d9d0c2;
  --orange: #e45a3a;
  --orange-dark: #bd4027;
  --green: #1d6758;
  --cream: #f7d99e;
  --white: #fff;
  --shadow: 0 24px 70px rgba(56, 42, 26, .11);
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --ease: cubic-bezier(.23, 1, .32, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--canvas); font-family: var(--sans); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.skip-link { position: fixed; left: 14px; top: -80px; z-index: 1000; padding: 10px 16px; background: var(--ink); color: white; border-radius: 6px; }
.skip-link:focus { top: 14px; }
.shell { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }

.site-header { width: min(1240px, calc(100% - 40px)); min-height: 72px; margin: 14px auto 0; padding: 10px 14px 10px 12px; display: flex; align-items: center; gap: 28px; position: relative; z-index: 20; border: 1px solid rgba(23, 23, 19, .09); border-radius: 10px; background: rgba(255, 253, 247, .9); box-shadow: 0 10px 36px rgba(56, 42, 26, .06); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .09em; text-decoration: none; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 48px; height: 48px; color: white; background: var(--orange); border-radius: 7px; font-size: 14px; letter-spacing: .04em; }
.site-header nav { display: flex; align-items: center; justify-content: center; gap: 28px; margin-left: auto; }
.site-header nav a { color: var(--muted); font-size: 14px; text-decoration: none; transition: color 180ms var(--ease); }
.site-header nav a:hover, .site-header nav a:focus-visible { color: var(--ink); }
.header-action { min-height: 44px; display: inline-flex; align-items: center; padding: 0 18px; color: white; background: var(--ink); border-radius: 7px; font-size: 14px; font-weight: 700; text-decoration: none; transition: transform 140ms var(--ease), background 180ms var(--ease); }
.header-action:hover { background: var(--orange-dark); transform: translateY(-1px); }
.header-action:active { transform: scale(.97); }

.hero { min-height: 720px; padding: 86px 0 74px; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(330px, .68fr); align-items: center; gap: 76px; position: relative; }
.hero::before { content: ""; width: 280px; height: 280px; position: absolute; right: 19%; top: 120px; z-index: -1; border-radius: 50%; background: rgba(228, 90, 58, .16); filter: blur(1px); }
.eyebrow { margin: 0 0 18px; color: var(--orange-dark); font-size: 12px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.hero h1, .course-hero h1 { margin: 0; font-family: var(--serif); font-weight: 700; letter-spacing: -.055em; line-height: 1.06; }
.hero h1 { max-width: 760px; font-size: clamp(54px, 7vw, 94px); }
.hero h1 em { color: var(--orange); font-style: normal; }
.hero-lead { max-width: 690px; margin: 30px 0 0; color: var(--muted); font-size: 18px; line-height: 1.85; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.actions.centered { justify-content: center; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid transparent; border-radius: 7px; font-size: 15px; font-weight: 800; text-decoration: none; transition: transform 140ms var(--ease), color 180ms var(--ease), background 180ms var(--ease), border-color 180ms var(--ease); }
.button:hover { transform: translateY(-2px); }
.button:active { transform: scale(.97); }
.button.primary { color: white; background: var(--orange); }
.button.primary:hover { background: var(--orange-dark); }
.button.quiet { border-color: var(--line); background: rgba(255, 253, 247, .58); }
.button.quiet:hover { border-color: var(--ink); }
.fact-row { display: flex; flex-wrap: wrap; gap: 28px; margin: 50px 0 0; padding: 24px 0 0; border-top: 1px solid var(--line); list-style: none; }
.fact-row li { display: grid; gap: 2px; }
.fact-row strong { font-size: 15px; }
.fact-row span { color: var(--muted); font-size: 12px; }

.seat-card { min-height: 490px; padding: 26px; position: relative; overflow: hidden; color: white; background: var(--orange); border-radius: 14px 44px 14px 14px; box-shadow: var(--shadow); transform: rotate(1.4deg); }
.seat-card::after { content: ""; width: 240px; height: 240px; position: absolute; right: -92px; bottom: -80px; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; box-shadow: 0 0 0 34px rgba(255,255,255,.07), 0 0 0 68px rgba(255,255,255,.05); }
.seat-card-top { display: flex; justify-content: space-between; font-size: 10px; font-weight: 800; letter-spacing: .15em; }
.seat-orbit { width: 152px; height: 152px; margin: 54px auto 34px; display: grid; place-items: center; position: relative; border: 1px solid rgba(255,255,255,.48); border-radius: 50%; }
.seat-orbit::before, .seat-orbit::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; transform: rotate(44deg); }
.seat-orbit::before { width: 188px; height: 78px; }
.seat-orbit::after { width: 78px; height: 188px; }
.seat-orbit span { font-family: var(--serif); font-size: 46px; font-weight: 700; }
.seat-card h2 { margin: 0; font-family: var(--serif); font-size: 34px; }
.seat-card > p { margin: 8px 0 0; color: rgba(255,255,255,.78); font-size: 14px; }
.seat-note { margin-top: 34px; padding-top: 18px; position: relative; z-index: 2; border-top: 1px solid rgba(255,255,255,.3); color: rgba(255,255,255,.85); font-size: 12px; }

.statement-band { padding: 34px max(24px, calc((100vw - 1160px)/2)); color: white; background: var(--green); }
.statement-band p { max-width: 940px; margin: 0; font-family: var(--serif); font-size: clamp(23px, 3.4vw, 41px); line-height: 1.4; }
.section { padding-block: 110px; }
.section-heading { max-width: 780px; }
.section-heading h2, .cta-panel h2, .output-panel h2, .schedule-panel h2 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 5vw, 64px); letter-spacing: -.04em; line-height: 1.16; }
.section-heading > p:not(.eyebrow), .split-heading > p { color: var(--muted); font-size: 17px; line-height: 1.8; }
.split-heading { max-width: none; display: grid; grid-template-columns: 1.15fr .75fr; align-items: end; gap: 80px; }
.split-heading > p { margin: 0; }

.service-list { margin-top: 54px; border-top: 1px solid var(--line); }
.service-list article { min-height: 150px; padding: 28px 0; display: grid; grid-template-columns: 70px minmax(0, 1fr) auto; align-items: center; gap: 28px; border-bottom: 1px solid var(--line); }
.service-index { color: var(--orange); font-size: 12px; font-weight: 900; }
.service-list h3 { margin: 0 0 5px; font-family: var(--serif); font-size: 28px; }
.service-list p { max-width: 710px; margin: 0; color: var(--muted); }
.service-list a { font-size: 13px; font-weight: 800; text-underline-offset: 4px; }
.article-feature { padding-block: 70px; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 60px; border-top: 1px solid var(--line); }
.article-feature > div { max-width: 820px; }
.article-feature h2 { margin: 0; font-family: var(--serif); font-size: clamp(38px, 5vw, 64px); letter-spacing: -.04em; line-height: 1.15; }
.article-feature p:not(.eyebrow) { margin: 18px 0 0; color: var(--muted); font-size: 17px; }
.text-link { display: inline-block; margin-top: 16px; color: var(--orange-dark); font-size: 13px; font-weight: 800; text-underline-offset: 4px; }

.trust-section { color: white; background: var(--green); }
.trust-heading .eyebrow { color: var(--cream); }
.trust-heading > p:not(.eyebrow) { color: rgba(255,255,255,.76); }
.trust-steps { margin-top: 58px; display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid rgba(255,255,255,.28); }
.trust-steps article { min-height: 470px; padding: 34px 32px 38px; border-right: 1px solid rgba(255,255,255,.22); }
.trust-steps article:first-child { padding-left: 0; }
.trust-steps article:last-child { padding-right: 0; border-right: 0; }
.trust-step-head { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; color: var(--cream); }
.trust-step-head span { font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.trust-step-head p { margin: 0; font-size: 11px; font-weight: 900; letter-spacing: .14em; }
.trust-steps h3 { margin: 70px 0 22px; font-family: var(--serif); font-size: 30px; line-height: 1.25; }
.trust-steps ul { margin: 0; padding: 0; list-style: none; }
.trust-steps li { padding: 13px 0 13px 20px; position: relative; border-top: 1px solid rgba(255,255,255,.15); color: rgba(255,255,255,.74); font-size: 14px; }
.trust-steps li::before { content: ""; width: 6px; height: 6px; position: absolute; left: 0; top: 23px; border-radius: 50%; background: var(--orange); }
.trust-status { margin-top: 42px; padding: 34px; display: grid; grid-template-columns: .7fr 1.3fr; gap: 60px; color: var(--ink); background: var(--paper); border-radius: 10px; }
.trust-status h3, .trust-faq h3 { margin: 0; font-family: var(--serif); font-size: 29px; line-height: 1.35; }
.trust-status dl { margin: 0; display: grid; gap: 18px; }
.trust-status dl div { display: grid; grid-template-columns: 90px 1fr; gap: 18px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.trust-status dl div:last-child { padding-bottom: 0; border-bottom: 0; }
.trust-status dt { color: var(--orange-dark); font-size: 12px; font-weight: 900; }
.trust-status dd { margin: 0; color: var(--muted); font-size: 14px; }
.trust-faq { margin-top: 72px; display: grid; grid-template-columns: .55fr 1.45fr; gap: 70px; }
.trust-faq .eyebrow { color: var(--cream); }
.trust-faq-list { border-top: 1px solid rgba(255,255,255,.28); }
.trust-faq-list details { padding: 22px 0; border-bottom: 1px solid rgba(255,255,255,.22); }
.trust-faq-list summary { cursor: pointer; font-family: var(--serif); font-size: 20px; font-weight: 700; }
.trust-faq-list p { margin: 12px 0 0; color: rgba(255,255,255,.7); }

.paper-section { background: var(--paper); border-block: 1px solid var(--line); }
.evidence-layout { display: grid; grid-template-columns: 1.05fr .75fr; gap: 26px; }
.evidence-layout .section-heading { grid-row: span 2; padding-right: 80px; }
.identity-card { padding: 30px; color: white; background: var(--ink); border-radius: 10px; }
.identity-label { margin: 0 0 28px; color: var(--cream); font-size: 10px; font-weight: 900; letter-spacing: .16em; }
.identity-card h3 { margin: 0; font-family: var(--serif); font-size: 38px; }
.identity-card > p { color: rgba(255,255,255,.74); }
.identity-card .identity-boundary { margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.16); font-size: 12px; }
.identity-card .credential-note { margin-top: 18px; padding: 16px; color: rgba(255,255,255,.84); background: rgba(255,255,255,.07); border-radius: 7px; font-size: 12px; }
.credential-note strong { color: var(--cream); }
.source-list { display: grid; border-top: 1px solid var(--line); }
.source-list a { padding: 15px 0; display: grid; gap: 2px; border-bottom: 1px solid var(--line); text-decoration: none; }
.source-list span { color: var(--orange-dark); font-size: 11px; font-weight: 900; }
.source-list strong { font-size: 14px; }

.cta-panel, .schedule-panel { padding: 62px; display: grid; grid-template-columns: 1fr .72fr; gap: 80px; color: white; background: var(--orange); border-radius: 12px 48px 12px 12px; box-shadow: var(--shadow); }
.eyebrow.light { color: var(--cream); }
.cta-copy p { margin: 0 0 28px; color: rgba(255,255,255,.82); }
.light-button { color: var(--ink); background: var(--paper); }
.light-button:hover { background: var(--cream); }

.site-footer { padding: 28px 0 44px; display: grid; grid-template-columns: 1fr auto; gap: 24px; border-top: 1px solid var(--line); }
.site-footer > div:first-child { display: grid; gap: 10px; }
.site-footer p { margin: 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; gap: 20px; align-items: center; }
.footer-links a { color: var(--muted); font-size: 13px; text-underline-offset: 4px; }
.footer-boundary { grid-column: 1 / -1; padding-top: 18px; border-top: 1px solid var(--line); }

/* Course page */
.course-hero { padding: 100px 0 86px; text-align: center; }
.course-kicker { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.course-kicker span { padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; }
.course-hero h1 { margin-top: 26px; font-size: clamp(64px, 10vw, 128px); color: var(--orange); }
.course-hero h1 span { white-space: nowrap; }
.course-hero h1 span + span::before { content: " "; }
.course-deck { max-width: 800px; margin: 32px auto 0; font-family: var(--serif); font-size: clamp(20px, 2.4vw, 29px); line-height: 1.65; }
.course-rule { max-width: 920px; margin: 82px auto 0; padding: 26px 0; display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 28px; border-block: 1px solid var(--line); text-align: left; }
.course-rule span { color: var(--orange-dark); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.course-rule strong { font-family: var(--serif); font-size: 24px; }
.course-guide-link { margin: 24px auto 0; text-align: center; }
.course-guide-link a { color: var(--orange-dark); font-size: 14px; font-weight: 800; text-underline-offset: 4px; }
.fit-grid { margin-top: 50px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.fit-card { padding: 34px; border: 1px solid var(--line); border-radius: 10px; background: var(--paper); }
.fit-card.yes { border-top: 5px solid var(--green); }
.fit-card.no { border-top: 5px solid var(--orange); }
.fit-label { margin: 0 0 22px; font-family: var(--serif); font-size: 30px; font-weight: 700; }
.fit-card ul { margin: 0; padding-left: 20px; }
.fit-card li { padding: 7px 0; color: var(--muted); }
.preparation-section { color: white; background: var(--green); }
.preparation-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 84px; align-items: start; }
.preparation-intro { position: sticky; top: 30px; }
.preparation-intro h2 { margin: 10px 0 24px; font-family: var(--serif); font-size: clamp(42px, 5.2vw, 68px); line-height: 1.15; letter-spacing: -.045em; }
.preparation-intro > p:not(.eyebrow) { max-width: 520px; color: rgba(255,255,255,.72); }
.preparation-intro ol { margin: 38px 0 0; padding: 0; list-style: none; counter-reset: prep; border-top: 1px solid rgba(255,255,255,.24); }
.preparation-intro li { padding: 15px 0 15px 34px; position: relative; border-bottom: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.78); }
.preparation-intro li::before { counter-increment: prep; content: "0" counter(prep); position: absolute; left: 0; color: var(--cream); font-size: 10px; font-weight: 900; }
.preparation-form { padding: 38px; display: grid; gap: 22px; color: var(--ink); background: var(--paper); border-radius: 10px 42px 10px 10px; box-shadow: var(--shadow); }
.preparation-form label { display: grid; gap: 9px; }
.preparation-form label > span { font-size: 13px; font-weight: 900; }
.preparation-form input[type="text"], .preparation-form select, .preparation-form textarea { width: 100%; min-height: 50px; padding: 13px 15px; color: var(--ink); background: white; border: 1px solid var(--line); border-radius: 4px; font: inherit; }
.preparation-form textarea { min-height: 118px; resize: vertical; line-height: 1.65; }
.preparation-form input:focus, .preparation-form select:focus, .preparation-form textarea:focus { outline: 3px solid rgba(228,90,58,.24); border-color: var(--orange); }
.preparation-consent { grid-template-columns: auto 1fr; align-items: start; gap: 10px !important; color: var(--muted); }
.preparation-consent input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--orange); }
.preparation-consent span { font-weight: 600 !important; line-height: 1.6; }
.preparation-submit { width: 100%; cursor: pointer; font-family: inherit; }
.preparation-privacy { margin: -8px 0 0; color: var(--muted); font-size: 11px; text-align: center; }
.preparation-result { grid-column: 2; padding: 38px; color: var(--ink); background: var(--cream); border: 1px solid rgba(255,255,255,.42); border-radius: 10px; }
.preparation-result h3 { margin: 7px 0 0; font-family: var(--serif); font-size: clamp(28px, 3.2vw, 42px); text-wrap: balance; }
.preparation-result pre { margin: 28px 0; padding: 24px; white-space: pre-wrap; color: #34322c; background: white; border-left: 4px solid var(--orange); font: 15px/1.9 var(--sans); }
.preparation-result-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.preparation-result-actions button { cursor: pointer; font-family: inherit; }
.preparation-result [data-preparation-status] { min-height: 24px; margin: 12px 0 0; color: var(--orange-dark); font-weight: 800; }
.learning-path { margin: 52px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; list-style: none; background: var(--line); border: 1px solid var(--line); }
.learning-path li { min-height: 240px; padding: 34px; display: grid; grid-template-columns: 46px 1fr; gap: 18px; background: var(--paper); }
.learning-path li > span { color: var(--orange); font-size: 12px; font-weight: 900; }
.learning-path h3 { margin: 0; font-family: var(--serif); font-size: 27px; }
.learning-path p { margin: 10px 0 0; color: var(--muted); }
.landing-grid { margin-top: 52px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.landing-grid article { min-height: 250px; padding: 30px; color: white; background: var(--ink); border-radius: 10px; }
.landing-grid article:nth-child(even) { background: var(--green); }
.landing-grid span { color: var(--cream); font-size: 11px; font-weight: 900; }
.landing-grid h3 { margin: 46px 0 10px; font-family: var(--serif); font-size: 25px; }
.landing-grid p { margin: 0; color: rgba(255,255,255,.72); font-size: 14px; }
.windows-strip { margin-top: 18px; padding: 30px; display: grid; grid-template-columns: .8fr 1.4fr; gap: 20px 54px; align-items: start; border: 1px solid var(--line); background: var(--paper); border-radius: 10px; }
.windows-strip span { color: var(--orange-dark); font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.windows-strip h3 { margin: 7px 0 0; font-family: var(--serif); font-size: 26px; line-height: 1.35; }
.windows-strip > p { margin: 0; color: var(--muted); }
.windows-links { grid-column: 2; display: flex; flex-wrap: wrap; gap: 10px 18px; }
.windows-links a { font-size: 12px; font-weight: 800; text-underline-offset: 3px; }
.output-panel { padding: 56px; display: grid; grid-template-columns: 1fr .8fr; gap: 70px; border: 1px solid var(--line); background: var(--paper); }
.output-panel ul { margin: 0; padding: 0; list-style: none; counter-reset: output; }
.output-panel li { padding: 15px 0 15px 34px; position: relative; border-bottom: 1px solid var(--line); color: var(--muted); }
.output-panel li::before { counter-increment: output; content: counter(output); position: absolute; left: 0; color: var(--orange); font-weight: 900; }
.verify-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.verify-grid article { min-height: 220px; padding: 28px; background: var(--paper); border: 1px solid var(--line); }
.verify-grid span { color: var(--orange); font-size: 11px; font-weight: 900; }
.verify-grid h3 { margin: 42px 0 8px; font-family: var(--serif); font-size: 24px; }
.verify-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.source-note { margin-top: 18px; padding: 22px; display: flex; flex-wrap: wrap; gap: 10px 20px; background: rgba(29,103,88,.08); }
.source-note p { width: 100%; margin: 0; font-weight: 900; }
.source-note a { font-size: 13px; text-underline-offset: 3px; }

/* AI small class content matrix */
.matrix-hero { padding: 112px 0 90px; }
.matrix-hero h1 { max-width: 950px; margin: 0; font-family: var(--serif); font-size: clamp(60px, 9vw, 118px); line-height: 1.02; letter-spacing: -.06em; }
.matrix-hero h1 em { color: var(--orange); font-style: normal; }
.matrix-deck { max-width: 790px; margin: 34px 0 0; color: var(--muted); font-size: 19px; line-height: 1.9; }
.matrix-facts { max-width: 790px; margin-top: 58px; display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.matrix-facts div { padding: 22px 24px; display: grid; gap: 2px; border-right: 1px solid var(--line); }
.matrix-facts div:first-child { padding-left: 0; }
.matrix-facts div:last-child { border-right: 0; }
.matrix-facts strong { color: var(--orange); font-family: var(--serif); font-size: 34px; }
.matrix-facts span { color: var(--muted); font-size: 12px; }
.matrix-band { padding: 22px 0; color: white; background: var(--ink); }
.matrix-band .shell { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.matrix-band span { font-size: 13px; font-weight: 900; letter-spacing: .08em; }
.matrix-band i { color: var(--cream); font-style: normal; }
.matrix-grid { margin-top: 54px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.matrix-card { min-height: 560px; padding: 36px; display: flex; flex-direction: column; color: white; background: var(--ink); border-radius: 10px 38px 10px 10px; }
.matrix-card.green-card { background: var(--green); }
.matrix-card.paper-card { color: var(--ink); background: var(--paper); border: 1px solid var(--line); }
.matrix-card.orange-card { background: var(--orange-dark); }
.matrix-card-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.matrix-card-head > span { color: var(--cream); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.paper-card .matrix-card-head > span { color: var(--orange-dark); }
.matrix-card mark { padding: 5px 9px; color: var(--green); background: #dff3e8; border-radius: 999px; font-size: 10px; font-weight: 900; }
.matrix-card mark.pending { color: #8c4f00; background: #fff0c7; }
.matrix-question { margin: 60px 0 14px; color: rgba(255,255,255,.62); font-size: 13px; }
.paper-card .matrix-question { color: var(--muted); }
.matrix-card h3 { margin: 0; font-family: var(--serif); font-size: clamp(30px, 3.5vw, 44px); line-height: 1.28; }
.matrix-card dl { margin: 42px 0 28px; display: grid; }
.matrix-card dl div { padding: 12px 0; display: grid; grid-template-columns: 76px 1fr; gap: 18px; border-top: 1px solid rgba(255,255,255,.18); }
.paper-card dl div { border-color: var(--line); }
.matrix-card dt { color: var(--cream); font-size: 11px; font-weight: 900; }
.paper-card dt { color: var(--orange-dark); }
.matrix-card dd { margin: 0; color: rgba(255,255,255,.74); font-size: 13px; }
.paper-card dd { color: var(--muted); }
.matrix-link { margin-top: auto; padding-top: 18px; display: flex; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.25); font-size: 13px; font-weight: 900; text-decoration: none; }
.paper-card .matrix-link { border-color: var(--line); }
.matrix-boundary-section { color: white; background: var(--green); }
.boundary-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 100px; }
.boundary-layout h2 { margin: 0; font-family: var(--serif); font-size: clamp(42px, 5vw, 68px); line-height: 1.18; }
.boundary-stack { border-top: 1px solid rgba(255,255,255,.28); }
.boundary-stack article { padding: 28px 0; display: grid; grid-template-columns: 160px 1fr; gap: 34px; border-bottom: 1px solid rgba(255,255,255,.22); }
.boundary-stack article > span { color: var(--cream); font-size: 12px; font-weight: 900; }
.boundary-stack p { margin: 0; color: rgba(255,255,255,.74); }
.boundary-links { grid-column: 2; display: flex; gap: 18px; }
.boundary-links a { color: white; font-size: 12px; font-weight: 900; }
.official-panel { padding: 60px; display: grid; grid-template-columns: .95fr 1.05fr; gap: 90px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px 48px 12px 12px; }
.official-panel h2 { margin: 0; font-family: var(--serif); font-size: clamp(40px, 5vw, 62px); line-height: 1.16; }
.official-panel > div > p:not(.eyebrow) { color: var(--muted); }
.official-links { display: grid; border-top: 1px solid var(--line); }
.official-links a { padding: 22px 0; display: grid; gap: 5px; border-bottom: 1px solid var(--line); text-decoration: none; }
.official-links span { color: var(--orange-dark); font-size: 11px; font-weight: 900; }
.official-links strong { font-family: var(--serif); font-size: 20px; }
.faq-section { background: var(--paper); border-block: 1px solid var(--line); }
.faq-layout { display: grid; grid-template-columns: .45fr 1fr; gap: 80px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { padding: 22px 0; border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; font-family: var(--serif); font-size: 21px; font-weight: 700; }
.faq-list p { margin: 13px 0 0; color: var(--muted); }
.schedule-panel { display: block; max-width: 1000px; margin: auto; text-align: center; }
.schedule-panel > p:not(.eyebrow) { max-width: 720px; margin: 22px auto 0; color: rgba(255,255,255,.82); }
.schedule-checks { margin: 32px 0; display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }
.schedule-checks span { padding: 7px 11px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; font-size: 12px; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.copy-button { color: white; border-color: rgba(255,255,255,.58); background: transparent; cursor: pointer; font-family: inherit; }
.copy-button:hover { color: var(--ink); background: var(--cream); border-color: var(--cream); }
.contact-handle { margin-top: 14px !important; color: rgba(255,255,255,.76) !important; font-size: 13px; }
.contact-handle strong { color: white; letter-spacing: .04em; }
[data-action-status] { color: var(--cream); font-weight: 800; }
.share-strip { max-width: 920px; margin: 38px auto 0; padding: 24px; display: grid; grid-template-columns: 116px 1fr auto; align-items: center; gap: 30px; border: 1px solid var(--line); background: rgba(255,253,247,.64); text-align: left; }
.share-strip span { color: var(--orange-dark); font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.share-strip strong { display: block; margin-top: 5px; font-family: var(--serif); font-size: 22px; }
.share-strip p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.poster-thumb-link { display: block; line-height: 0; box-shadow: 0 12px 30px rgba(36,31,24,.13); transition: transform 140ms ease-out, box-shadow 140ms ease-out; }
.poster-thumb-link:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(36,31,24,.18); }
.poster-thumb-link:active { transform: translateY(0); }
.course-poster-thumb { display: block; width: 100%; height: auto; }
.share-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.share-actions [data-action-status] { grid-column: 1 / -1; min-height: 22px; margin: 2px 0 0; color: var(--orange-dark); text-align: center; }
.share-button { cursor: pointer; font-family: inherit; white-space: nowrap; }
.poster-download { grid-column: 1 / -1; justify-content: center; }
.course-contact { max-width: 610px; margin: 34px auto 0; padding: 26px; display: grid; justify-items: center; gap: 8px; border: 1px solid rgba(255,255,255,.34); background: rgba(23,23,19,.1); border-radius: 9px; }
.course-contact-label, .course-contact-note { margin: 0 !important; }
.course-contact-label { color: var(--cream) !important; font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.course-contact-handle { font-size: clamp(30px, 5vw, 46px); letter-spacing: .035em; line-height: 1.25; }
.course-contact-note { max-width: 500px !important; color: rgba(255,255,255,.8) !important; font-size: 13px; }
.schedule-home-link { display: inline-block; margin-top: 24px; color: rgba(255,255,255,.82); font-size: 13px; text-underline-offset: 4px; }

/* Long-form article */
.article-hero { padding: 100px 0 72px; border-bottom: 1px solid var(--line); }
.article-hero h1 { max-width: 980px; margin: 0; font-family: var(--serif); font-size: clamp(56px, 8vw, 106px); line-height: 1.05; letter-spacing: -.055em; }
.article-deck { margin: 24px 0 0; color: var(--orange); font-family: var(--serif); font-size: clamp(24px, 3vw, 38px); }
.article-meta { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 10px 26px; color: var(--muted); font-size: 12px; font-weight: 800; }
.article-lead { max-width: 860px; margin: 58px 0 0; font-family: var(--serif); font-size: clamp(21px, 2.2vw, 29px); line-height: 1.7; }
.article-layout { padding-block: 80px 120px; display: grid; grid-template-columns: 210px minmax(0, 760px); justify-content: center; gap: 80px; }
.article-rail { align-self: start; position: sticky; top: 28px; padding-top: 16px; border-top: 3px solid var(--orange); }
.article-rail > p { margin: 0 0 18px; font-weight: 900; }
.article-rail ol { margin: 0; padding: 0; list-style: none; counter-reset: rail; }
.article-rail li { padding: 9px 0; color: var(--muted); font-size: 13px; border-bottom: 1px solid var(--line); }
.article-body > p, .article-body section > p, .article-boundary p { margin: 0 0 22px; color: #35342f; font-family: var(--serif); font-size: 18px; line-height: 2; }
.article-body section { margin-top: 78px; }
.article-index { color: var(--orange); font-size: 11px; font-weight: 900; letter-spacing: .14em; }
.article-body h2 { margin: 10px 0 28px; font-family: var(--serif); font-size: clamp(32px, 4vw, 48px); line-height: 1.25; letter-spacing: -.035em; }
.article-body blockquote { margin: 74px -90px; padding: 50px 72px; color: white; background: var(--green); font-family: var(--serif); font-size: clamp(27px, 4vw, 44px); line-height: 1.5; }
.windows-article { padding: 42px; background: var(--paper); border: 1px solid var(--line); }
.article-source-links { display: flex; flex-wrap: wrap; gap: 12px 24px; padding-top: 12px; border-top: 1px solid var(--line); }
.article-source-links a { font-size: 12px; font-weight: 800; text-underline-offset: 3px; }
.article-output-list { margin: 0; padding: 0; list-style: none; counter-reset: outputs; }
.article-output-list li { padding: 22px 0 22px 48px; display: grid; gap: 4px; position: relative; border-bottom: 1px solid var(--line); }
.article-output-list li::before { counter-increment: outputs; content: counter(outputs); position: absolute; left: 0; color: var(--orange); font-weight: 900; }
.article-output-list strong { font-family: var(--serif); font-size: 21px; }
.article-output-list span { color: var(--muted); font-size: 14px; }
.article-boundary { margin-top: 80px; padding: 38px; border-left: 5px solid var(--orange); background: rgba(255,253,247,.62); }
.article-boundary h2 { margin-top: 0; font-size: 30px; }
.article-boundary p:last-child { margin-bottom: 0; }
.article-cta { margin-top: 80px; padding: 50px; color: white; background: var(--orange); border-radius: 10px 38px 10px 10px; }
.article-cta h2 { margin-top: 0; }
.article-cta > p:not(.eyebrow) { color: rgba(255,255,255,.82); font-family: var(--sans); font-size: 15px; line-height: 1.8; }

/* Public course kit */
.press-hero { min-height: 760px; padding: 90px 0; display: grid; grid-template-columns: 1fr 330px; align-items: center; gap: 92px; }
.press-hero h1 { margin: 18px 0 28px; font-family: var(--serif); font-size: clamp(60px, 8vw, 112px); line-height: 1.03; letter-spacing: -.055em; }
.press-hero h1 em { color: var(--orange); font-style: normal; }
.press-hero-copy > p:not(.eyebrow,.press-status) { max-width: 720px; color: var(--muted); font-family: var(--serif); font-size: clamp(20px, 2.1vw, 28px); line-height: 1.7; }
.press-poster { display: block; line-height: 0; box-shadow: 0 30px 70px rgba(36,31,24,.2); transform: rotate(1.4deg); transition: transform 160ms ease-out, box-shadow 160ms ease-out; }
.press-poster:hover { transform: rotate(0) translateY(-4px); box-shadow: 0 36px 80px rgba(36,31,24,.24); }
.press-poster img { display: block; width: 100%; height: auto; }
.press-status { min-height: 24px; margin-top: 12px; color: var(--orange-dark); font-weight: 800; }
.press-facts { margin: 48px 0 0; border-top: 1px solid var(--line); }
.press-facts div { padding: 22px 0; display: grid; grid-template-columns: 180px 1fr; gap: 28px; border-bottom: 1px solid var(--line); }
.press-facts dt { color: var(--orange-dark); font-size: 11px; font-weight: 900; letter-spacing: .12em; }
.press-facts dd { margin: 0; font-family: var(--serif); font-size: 22px; }
.copy-card-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.copy-card { min-height: 440px; padding: 30px; display: flex; flex-direction: column; border: 1px solid var(--line); background: var(--paper); }
.copy-card > span { color: var(--orange-dark); font-size: 10px; font-weight: 900; letter-spacing: .12em; }
.copy-card h3 { margin: 36px 0 14px; font-family: var(--serif); font-size: 27px; }
.copy-card p { margin: 0 0 26px; color: var(--muted); }
.copy-card .button { width: 100%; margin-top: auto; cursor: pointer; font-family: inherit; }
.asset-links { margin-top: 48px; display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.asset-links a { min-height: 150px; padding: 25px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid var(--line); background: var(--paper); transition: transform 140ms ease-out, border-color 140ms ease-out; }
.asset-links a:hover { transform: translateY(-2px); border-color: var(--orange); }
.asset-links span { color: var(--orange-dark); font-size: 10px; font-weight: 900; letter-spacing: .1em; }
.asset-links strong { font-family: var(--serif); font-size: 21px; }
.press-boundary { margin-top: 28px; padding: 28px; display: grid; grid-template-columns: 170px 1fr; gap: 28px; color: white; background: var(--green); }
.press-boundary p { margin: 0; color: rgba(255,255,255,.8); }

/* Course announcement */
.announcement-hero { min-height: 740px; padding: 100px 0 90px; display: grid; grid-template-columns: 1fr 340px; align-items: center; gap: 90px; }
.announcement-hero h1 { margin: 18px 0 26px; font-family: var(--serif); font-size: clamp(72px, 10vw, 138px); line-height: .95; letter-spacing: -.065em; }
.announcement-hero h1 em { color: var(--orange); font-style: normal; }
.announcement-deck { max-width: 730px; margin: 0; color: var(--muted); font-family: var(--serif); font-size: clamp(21px, 2.3vw, 30px); line-height: 1.7; }
.answer-card { min-height: 500px; padding: 34px; display: flex; flex-direction: column; color: white; background: var(--green); border-radius: 12px 54px 12px 12px; box-shadow: var(--shadow); transform: rotate(1.5deg); }
.answer-card > span { color: var(--cream); font-size: 11px; font-weight: 900; letter-spacing: .13em; }
.answer-card > strong { margin-top: 34px; color: var(--cream); font-family: var(--serif); font-size: 150px; line-height: 1; }
.answer-card p { margin: auto 0 28px; font-family: var(--serif); font-size: 30px; line-height: 1.45; }
.answer-card small { padding-top: 18px; border-top: 1px solid rgba(255,255,255,.28); color: rgba(255,255,255,.72); }
.announcement-points { margin-top: 50px; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: var(--line); gap: 1px; }
.announcement-points article { min-height: 300px; padding: 30px; background: var(--paper); }
.announcement-points span { color: var(--orange); font-size: 11px; font-weight: 900; }
.announcement-points h3 { margin: 62px 0 14px; font-family: var(--serif); font-size: 28px; }
.announcement-points p { margin: 0; color: var(--muted); font-size: 14px; }
.announcement-dark { color: white; background: var(--ink); }
.announcement-practice { display: grid; grid-template-columns: .8fr 1fr; gap: 100px; }
.announcement-practice h2 { margin: 0; font-family: var(--serif); font-size: clamp(42px, 5vw, 70px); line-height: 1.2; }
.announcement-practice ol { margin: 0; padding: 0; list-style: none; counter-reset: practice; }
.announcement-practice li { padding: 24px 0 24px 54px; position: relative; border-bottom: 1px solid rgba(255,255,255,.18); }
.announcement-practice li::before { counter-increment: practice; content: "0" counter(practice); position: absolute; left: 0; top: 27px; color: var(--cream); font-size: 11px; font-weight: 900; }
.announcement-practice li span { font-family: var(--serif); font-size: 24px; }
.announcement-practice li p { margin: 7px 0 0; color: rgba(255,255,255,.65); }

:focus-visible { outline: 3px solid var(--cream); outline-offset: 3px; }
@media (max-width: 900px) {
  .site-header { flex-wrap: wrap; gap: 12px; }
  .site-header nav { order: 3; width: 100%; justify-content: flex-start; overflow-x: auto; padding: 4px; }
  .header-action { margin-left: auto; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 64px; padding-top: 70px; }
  .seat-card { width: min(100%, 500px); margin: auto; transform: none; }
  .split-heading, .evidence-layout, .cta-panel, .output-panel, .faq-layout, .windows-strip, .trust-status, .trust-faq, .article-feature, .boundary-layout, .official-panel, .preparation-layout { grid-template-columns: 1fr; gap: 38px; }
  .preparation-intro { position: static; }
  .preparation-result { grid-column: 1; }
  .press-hero { grid-template-columns: 1fr 250px; gap: 48px; }
  .announcement-hero { grid-template-columns: 1fr 280px; gap: 48px; }
  .announcement-points { grid-template-columns: 1fr 1fr; }
  .announcement-practice { grid-template-columns: 1fr; gap: 50px; }
  .copy-card-grid, .asset-links { grid-template-columns: 1fr 1fr; }
  .share-strip { grid-template-columns: 120px 1fr; }
  .share-actions { grid-column: 1 / -1; }
  .article-layout { grid-template-columns: minmax(0, 760px); }
  .article-rail { position: static; display: none; }
  .trust-steps { grid-template-columns: 1fr; }
  .trust-steps article, .trust-steps article:first-child, .trust-steps article:last-child { min-height: auto; padding: 32px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.22); }
  .trust-steps article:last-child { border-bottom: 0; }
  .trust-steps h3 { margin-top: 36px; }
  .landing-grid { grid-template-columns: 1fr 1fr; }
  .windows-links { grid-column: 1; }
  .evidence-layout .section-heading { grid-row: auto; padding-right: 0; }
  .verify-grid { grid-template-columns: 1fr 1fr; }
  .boundary-stack article { grid-template-columns: 140px 1fr; }
  .cta-panel { padding: 46px; }
}
@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1160px); }
  .site-header { width: calc(100% - 20px); margin-top: 10px; }
  .site-header nav { gap: 20px; }
  .brand { font-size: 13px; }
  .brand-mark { width: 42px; height: 42px; font-size: 12px; }
  .header-action { min-height: 42px; padding-inline: 13px; font-size: 12px; }
  .hero { padding: 58px 0; }
  .hero h1 { font-size: 50px; }
  .hero-lead { font-size: 16px; }
  .fact-row { gap: 18px; }
  .seat-card { min-height: 450px; padding: 22px; }
  .section { padding-block: 76px; }
  .section-heading h2, .cta-panel h2, .output-panel h2, .schedule-panel h2 { font-size: 38px; }
  .service-list article { grid-template-columns: 40px 1fr; gap: 16px; }
  .service-list article > a { grid-column: 2; }
  .trust-status { padding: 26px 22px; }
  .trust-status dl div { grid-template-columns: 1fr; gap: 6px; }
  .cta-panel, .output-panel, .schedule-panel { padding: 32px 24px; border-radius: 10px 30px 10px 10px; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
  .course-hero { padding: 70px 0 56px; }
  .course-hero h1 { font-size: 66px; }
  .course-hero h1 span { display: block; }
  .course-hero h1 span + span::before { content: none; }
  .course-deck { font-size: 20px; }
  .course-rule { margin-top: 56px; grid-template-columns: 1fr; gap: 8px; }
  .preparation-form, .preparation-result { padding: 28px 22px; border-radius: 8px 26px 8px 8px; }
  .preparation-intro h2 { font-size: 42px; }
  .preparation-result h3 { max-width: 11em; font-size: 32px; }
  .preparation-result-actions { display: grid; }
  .article-hero { padding: 66px 0 52px; }
  .article-hero h1 { font-size: 52px; }
  .article-layout { padding-block: 58px 80px; gap: 0; }
  .article-body > p, .article-body section > p, .article-boundary p { font-size: 17px; line-height: 1.9; }
  .article-body section { margin-top: 60px; }
  .article-body blockquote { margin: 58px -14px; padding: 34px 26px; }
  .windows-article, .article-boundary, .article-cta { padding: 28px 22px; }
  .fit-grid, .learning-path, .landing-grid, .verify-grid { grid-template-columns: 1fr; }
  .press-hero { min-height: auto; padding: 64px 0 84px; grid-template-columns: 1fr; }
  .announcement-hero { min-height: auto; padding: 70px 0 80px; grid-template-columns: 1fr; }
  .announcement-hero h1 { font-size: 74px; }
  .answer-card { width: min(100%, 360px); min-height: 430px; margin: 12px auto 0; transform: none; }
  .answer-card > strong { font-size: 120px; }
  .announcement-points { grid-template-columns: 1fr; }
  .announcement-points article { min-height: auto; }
  .announcement-points h3 { margin-top: 34px; }
  .press-hero h1 { font-size: 55px; }
  .press-poster { width: min(72%, 300px); margin: 8px auto 0; transform: none; }
  .press-facts div, .press-boundary { grid-template-columns: 1fr; gap: 10px; }
  .press-facts dd { font-size: 19px; }
  .copy-card-grid, .asset-links { grid-template-columns: 1fr; }
  .copy-card { min-height: auto; }
  .learning-path li { min-height: auto; padding: 26px; }
  .source-note { display: grid; }
  .matrix-hero { padding: 76px 0 64px; }
  .matrix-hero h1 { font-size: 56px; }
  .matrix-deck { font-size: 17px; }
  .matrix-facts { grid-template-columns: 1fr; }
  .matrix-facts div, .matrix-facts div:first-child { padding: 16px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .matrix-facts div:last-child { border-bottom: 0; }
  .matrix-band .shell { align-items: flex-start; flex-direction: column; }
  .matrix-band i { display: none; }
  .matrix-grid { grid-template-columns: 1fr; }
  .matrix-card { min-height: 520px; padding: 28px 24px; }
  .matrix-card-head { align-items: flex-start; }
  .boundary-stack article { grid-template-columns: 1fr; gap: 10px; }
  .boundary-links { grid-column: 1; }
  .official-panel { padding: 32px 24px; }
  .share-actions { grid-template-columns: 1fr; }
  .share-strip { grid-template-columns: 92px 1fr; gap: 18px; }
  .share-actions [data-action-status] { grid-column: 1; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}