:root {
  --ink: #172237;
  --ink-2: #283b5b;
  --muted: #637087;
  --teal: #2356d8;
  --teal-dark: #173fa8;
  --mint: #edf1ff;
  --paper: #fffaf2;
  --sand: #f3f5df;
  --sun: #d8ed75;
  --mango: #ff8054;
  --white: #fff;
  --line: rgba(23, 34, 55, .16);
  --shadow: 12px 14px 0 rgba(23, 34, 55, .09);
  --radius: 8px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Avenir Next", "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}
body.modal-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 10px 14px;
  background: var(--white); border-radius: 8px; transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.topbar {
  position: sticky; z-index: 100; top: 0; height: 76px;
  color: var(--white); background: rgba(23, 34, 55, .96); border-bottom: 0;
  backdrop-filter: blur(14px);
}
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; line-height: 1.1; }
.brand strong { display: block; font-size: 19px; font-weight: 900; letter-spacing: -.02em; }
.brand small { display: block; margin-top: 4px; color: #b9c4dc; font-size: 9px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.brand-mark {
  width: 42px; height: 42px; display: grid; place-items: center;
  color: var(--ink); background: var(--sun); border-radius: 4px;
}
.brand-mark svg { width: 27px; fill: none; stroke: currentColor; stroke-width: 2.3; stroke-linecap: round; stroke-linejoin: round; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a { position: relative; color: var(--white); font-size: 13px; font-weight: 800; text-decoration: none; }
.site-nav a::after {
  content: ""; position: absolute; right: 0; bottom: -8px; left: 0; height: 2px;
  background: var(--mango); transform: scaleX(0); transition: transform .2s ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after { transform: scaleX(1); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; background: none; border: 0; cursor: pointer; }
.menu-toggle > span:not(.sr-only) { display: block; width: 22px; height: 2px; margin: 5px auto; background: var(--white); transition: .2s ease; }

.hero {
  position: relative; padding: 88px 0 0;
  background:
    linear-gradient(90deg, rgba(35,86,216,.07) 1px, transparent 1px),
    linear-gradient(rgba(35,86,216,.07) 1px, transparent 1px),
    linear-gradient(115deg, #fffaf2 0 62%, #e8edff 62%);
  background-size: 48px 48px, 48px 48px, auto;
  overflow: hidden;
}
.hero::after { content: ""; position: absolute; top: 42px; right: 4%; width: 86px; height: 86px; background: var(--mango); transform: rotate(12deg); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 72px; }
.eyebrow { margin: 0 0 12px; color: var(--teal-dark); font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.display-name { display: inline-block; margin: 0 0 16px; padding: 7px 11px; color: var(--white); background: var(--teal); font-size: 14px; font-weight: 900; letter-spacing: .04em; line-height: 1; text-transform: uppercase; transform: rotate(-1deg); }
h1, h2, h3 { margin-top: 0; line-height: 1.16; }
h1, h2 { font-weight: 900; }
h1 { max-width: 710px; margin-bottom: 22px; font-size: clamp(40px, 5vw, 70px); letter-spacing: -.055em; line-height: 1.02; }
h2 { margin-bottom: 18px; font-size: clamp(31px, 4vw, 48px); letter-spacing: -.045em; line-height: 1.06; }
h3 { font-size: 20px; }
.lead { max-width: 660px; margin: 0 0 30px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  min-height: 50px; display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 22px; border: 2px solid var(--ink); border-radius: 4px;
  font-size: 14px; font-weight: 800; text-decoration: none; cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--white); background: var(--teal); box-shadow: 5px 5px 0 var(--ink); }
.btn-primary:hover { background: var(--ink); }
.btn-secondary { color: var(--ink); background: var(--sun); border-color: var(--ink); }
.trust-list { display: flex; flex-wrap: wrap; gap: 20px; margin: 26px 0 0; padding: 0; list-style: none; }
.trust-list li { position: relative; padding-left: 18px; color: var(--ink-2); font-size: 12px; font-weight: 700; }
.trust-list li::before { content: "•"; position: absolute; left: 0; color: var(--teal); font-size: 20px; line-height: 12px; }
.hero-visual { position: relative; min-height: 570px; display: flex; align-items: center; }
.hero-visual::before {
  content: ""; position: absolute; width: 420px; aspect-ratio: 1; right: -20px; top: 70px;
  background: var(--sun); clip-path: polygon(16% 0, 100% 8%, 88% 100%, 0 86%);
}
.hero-visual img { position: relative; z-index: 1; width: 100%; filter: drop-shadow(0 30px 38px rgba(10,61,76,.16)); }
.visual-note {
  position: absolute; z-index: 2; right: -8px; bottom: 72px; width: 230px; padding: 15px 18px;
  color: var(--white); background: var(--mango); border: 2px solid var(--ink);
  border-radius: 4px; box-shadow: 7px 7px 0 var(--ink);
}
.visual-note span { display: block; color: var(--ink); font-size: 10px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.visual-note strong { display: block; margin-top: 5px; font-size: 13px; line-height: 1.35; }
.disclosure-strip {
  position: relative; z-index: 3; margin-top: 34px; padding: 18px 22px;
  display: flex; gap: 12px; color: #edf1ff; background: var(--ink);
  border-radius: 0; border-left: 8px solid var(--sun); font-size: 13px;
}
.disclosure-strip strong { color: var(--sun); white-space: nowrap; }

.section { padding: 100px 0; }
.section-tint { background: var(--mint); border-block: 1px solid var(--line); }
.section-heading { max-width: 790px; margin-bottom: 44px; }
.section-heading > p:last-child { color: var(--muted); }
.heading-row { max-width: none; display: grid; grid-template-columns: 1.1fr .9fr; align-items: end; gap: 80px; }
.heading-row > p { padding-bottom: 8px; }
.lesson-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.lesson-card {
  position: relative; min-height: 310px; padding: 30px; display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  border-top: 7px solid var(--teal); box-shadow: none; transition: transform .25s ease, box-shadow .25s ease;
}
.lesson-card:nth-child(2n) { border-top-color: var(--mango); }
.lesson-card:nth-child(3n) { border-top-color: var(--sun); }
.lesson-card:hover { transform: translate(-4px, -4px); box-shadow: 8px 8px 0 var(--ink); }
.lesson-number { position: absolute; top: 22px; right: 24px; color: rgba(10,61,76,.28); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
.lesson-icon { width: 48px; height: 48px; margin-bottom: 26px; display: grid; place-items: center; color: var(--white); background: var(--ink); border-radius: 4px; font-size: 25px; }
.lesson-card h3 { margin-bottom: 12px; }
.lesson-card p { margin: 0 0 24px; color: var(--muted); font-size: 14px; }
.lesson-card a { margin-top: auto; color: var(--teal-dark); font-size: 13px; font-weight: 800; text-decoration: none; }
.lesson-card a span, .text-link span { display: inline-block; transition: transform .2s ease; }
.lesson-card a:hover span, .text-link:hover span { transform: translateX(4px); }

.notes-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.note-card { padding: 30px; background: var(--white); border: 2px solid var(--ink); border-radius: var(--radius); }
.note-card.featured { padding: 0; display: grid; grid-template-columns: .9fr 1.1fr; grid-column: 1 / -1; overflow: hidden; }
.note-body { padding: 42px; align-self: center; }
.note-meta { margin: 0 0 12px !important; color: var(--teal-dark) !important; font-size: 10px !important; font-weight: 800; letter-spacing: .12em; }
.note-card h3 { margin-bottom: 10px; font-size: 23px; }
.note-card > p, .note-body > p { color: var(--muted); font-size: 14px; }
.text-link { padding: 0; color: var(--ink); background: none; border: 0; font-size: 13px; font-weight: 800; cursor: pointer; }
.note-art { position: relative; min-height: 310px; background: linear-gradient(145deg, #172237, #2356d8); overflow: hidden; }
.note-art::before, .note-art::after {
  content: ""; position: absolute; inset: 25px;
  background-image: linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 38px 38px;
}
.candle { position: absolute; z-index: 2; bottom: 70px; width: 18px; border-radius: 3px; }
.candle::before { content: ""; position: absolute; left: 8px; width: 2px; top: -24px; bottom: -24px; background: inherit; }
.candle.up { background: #68d5b4; }
.candle.down { background: var(--mango); }
.c1 { left: 22%; height: 54px; }.c2 { left: 39%; height: 82px; bottom: 92px; }.c3 { left: 57%; height: 69px; bottom: 115px; }.c4 { left: 75%; height: 98px; bottom: 142px; }
.chart-line { position: absolute; z-index: 1; width: 78%; height: 2px; left: 11%; top: 49%; background: var(--sun); transform: rotate(-16deg); box-shadow: 0 0 12px rgba(233,196,106,.5); }

.about-grid, .journal-grid, .contact-grid, .source-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.large-copy { color: var(--ink); font-size: 22px; font-weight: 800; line-height: 1.4; }
.about-grid > div:first-child > p:last-child, .journal-grid > div > p { color: var(--muted); }
.principles-panel { padding: 38px; background: var(--teal); border: 2px solid var(--ink); border-radius: var(--radius); box-shadow: 10px 10px 0 var(--ink); }
.principles-panel h3 { color: var(--white); }
.check-list { margin: 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding: 17px 0 17px 34px; color: #d9eeea; border-top: 1px solid rgba(255,255,255,.12); font-size: 14px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--sun); font-weight: 800; }

.metrics-section { color: var(--white); background: var(--ink); border-top: 12px solid var(--mango); }
.metrics-section .eyebrow { color: var(--sun); }
.metrics-section .section-heading > p:last-child { color: #bad8d5; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.16); border-bottom: 1px solid rgba(255,255,255,.16); }
.metrics-grid > div { padding: 34px 20px; text-align: center; border-right: 1px solid rgba(255,255,255,.16); }
.metrics-grid > div:last-child { border-right: 0; }
.metrics-grid strong { display: block; color: var(--sun); font-size: 54px; font-weight: 900; line-height: 1; }
.metrics-grid span { display: block; margin-top: 10px; color: #d7ece8; font-size: 12px; font-weight: 700; }
.journal-grid img { width: 100%; max-height: 520px; }
.steps { margin: 34px 0 0; padding: 0; list-style: none; }
.steps li { display: flex; gap: 18px; margin-bottom: 20px; }
.steps li > span { flex: 0 0 34px; height: 34px; display: grid; place-items: center; color: var(--white); background: var(--teal); border-radius: 50%; font-size: 13px; font-weight: 800; }
.steps strong { display: block; }
.steps p { margin: 2px 0 0; font-size: 14px; }

.boundaries { background: var(--sun); }
.boundary-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.boundary-grid article { padding: 24px; display: flex; gap: 16px; background: var(--white); border: 2px solid var(--ink); border-radius: 4px; }
.boundary-grid article > span { flex: 0 0 30px; height: 30px; display: grid; place-items: center; color: var(--white); background: var(--teal); border-radius: 4px; font-size: 13px; font-weight: 800; }
.boundary-grid h3 { margin-bottom: 7px; font-size: 16px; }
.boundary-grid p { margin: 0; color: var(--muted); font-size: 13px; }

.source-section { padding: 78px 0; }
.source-grid { align-items: start; }
.source-links { border-top: 1px solid var(--line); }
.source-links a { padding: 17px 6px; display: flex; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--line); text-decoration: none; }
.source-links span { font-weight: 800; }
.source-links small { color: var(--muted); text-align: right; }
.contact-section { background: linear-gradient(135deg, var(--mint) 0 58%, var(--paper) 58%); }
.contact-grid { align-items: start; }
.contact-box { margin-top: 30px; padding: 24px; background: rgba(255,255,255,.62); border: 1px solid var(--line); border-radius: 16px; }
.contact-box p { margin: 5px 0; }
.contact-box small { display: block; margin-top: 15px; color: #7a5200; font-weight: 700; }
.contact-form { padding: 34px; display: grid; gap: 9px; background: var(--white); border: 2px solid var(--ink); border-radius: var(--radius); box-shadow: 10px 10px 0 var(--ink); }
.contact-form label { margin-top: 7px; font-size: 12px; font-weight: 800; }
.contact-form input:not([type="checkbox"]), .contact-form select, .contact-form textarea {
  width: 100%; padding: 13px 14px; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 10px; outline: none;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(42,157,143,.12); }
.consent-row { display: flex; gap: 10px; align-items: flex-start; line-height: 1.45; }
.consent-row input { margin-top: 3px; accent-color: var(--teal); }
.contact-form .btn { justify-self: start; margin-top: 8px; }
.contact-form > small { color: var(--muted); }
.form-message { display: none; margin: 4px 0 0; padding: 10px 12px; border-radius: 8px; font-size: 13px; }
.form-message.error { display: block; color: #7d241b; background: #fbe9e6; }
.form-message.success { display: block; color: #173f2d; background: #ddf3e5; border: 1px solid #9dceb0; }

.footer { padding: 48px 0 28px; color: #dce3f3; background: #101827; border-top: 10px solid var(--teal); }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,.13); }
.brand-light .brand-mark { color: var(--ink); background: var(--sun); }
.brand-light small { color: #aebbd5; }
.footer nav { display: flex; flex-wrap: wrap; gap: 22px; }
.footer nav a, .footer nav button, .footer-link { padding: 0; color: #d8ece9; background: none; border: 0; font-size: 12px; font-weight: 700; text-decoration: none; cursor: pointer; }
.footer-meta { padding-top: 22px; display: grid; gap: 8px; color: #95bbb6; font-size: 11px; line-height: 1.55; }
.footer-meta p { margin: 0; }
.footer-meta a { color: #d8ece9; font-weight: 700; }
.footer-bottom { padding-top: 18px; display: flex; justify-content: space-between; gap: 20px; color: #95bbb6; font-size: 11px; border-top: 1px solid rgba(255,255,255,.08); margin-top: 18px; }
.footer-bottom p { margin: 0; }
.consent-banner {
  position: fixed; z-index: 800; right: 16px; bottom: 16px; left: 16px;
  max-width: 720px; margin-inline: auto; padding: 18px;
  color: var(--ink); background: var(--white); border: 3px solid var(--ink);
  border-radius: var(--radius); box-shadow: 10px 10px 0 rgba(23,34,55,.12);
}
.consent-banner-inner { display: grid; gap: 14px; }
.consent-banner strong { display: block; margin-bottom: 6px; font-size: 14px; }
.consent-banner p { margin: 0; color: var(--muted); font-size: 13px; }
.consent-banner-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.consent-privacy {
  padding: 0; color: var(--teal-dark); background: none; border: 0;
  font-size: 12px; font-weight: 800; text-decoration: underline; cursor: pointer;
}
.age-pill {
  display: inline-flex; align-items: center; margin: 0 0 14px; padding: 6px 10px;
  color: var(--ink); background: var(--sun); border: 2px solid var(--ink);
  font-size: 11px; font-weight: 900; letter-spacing: .04em; text-transform: uppercase;
}
.publisher-card {
  margin-top: 24px; padding: 22px; background: var(--white);
  border: 2px solid var(--ink); border-radius: var(--radius);
}
.publisher-card p { margin: 0 0 8px; color: var(--muted); font-size: 14px; }
.publisher-card p:last-child { margin-bottom: 0; }
.publisher-card strong { color: var(--ink); }

.modal { position: fixed; z-index: 500; inset: 0; display: none; padding: 24px; background: rgba(3,30,36,.72); backdrop-filter: blur(6px); overflow-y: auto; }
.modal.is-open { display: grid; place-items: center; }
.modal-dialog { position: relative; width: min(680px, 100%); max-height: min(760px, calc(100vh - 48px)); padding: 38px; overflow-y: auto; background: var(--paper); border: 3px solid var(--ink); border-radius: var(--radius); box-shadow: 12px 12px 0 var(--mango); }
.modal-close { position: absolute; top: 14px; right: 16px; width: 40px; height: 40px; background: var(--white); border: 1px solid var(--line); border-radius: 50%; font-size: 24px; cursor: pointer; }
.modal-copy { color: var(--muted); }
.modal-copy h3 { margin: 28px 0 8px; color: var(--ink); font-size: 17px; }
.modal-copy li { margin-bottom: 7px; }

.site-nav a[aria-current="page"] { color: var(--sun); }
.site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.home-hero { min-height: calc(100vh - 76px); }
.home-paths { background: var(--white); }
.home-notes { margin-top: 8px; }
.about-home { background: var(--white); }
.home-boundaries { background: var(--sun); }
.home-cta { padding-top: 0; background: var(--paper); }
.home-cta-panel {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center;
  padding: 48px; background: var(--ink); color: #edf1ff; border: 3px solid var(--ink);
  box-shadow: 12px 12px 0 var(--mango);
}
.home-cta-panel .eyebrow { color: var(--sun); }
.home-cta-panel h2 { color: var(--white); margin-bottom: 12px; }
.home-cta-panel p { color: #b9c4dc; margin: 0; }
.home-cta-actions { display: grid; gap: 12px; }
.home-cta-actions .btn { width: 100%; justify-content: center; }
.home-cta-actions .btn-secondary { background: var(--sun); }
.path-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.path-grid > a {
  min-height: 280px; padding: 30px; display: flex; flex-direction: column;
  color: var(--ink); background: var(--paper); border: 2px solid var(--ink);
  border-radius: var(--radius); text-decoration: none; transition: transform .2s ease, box-shadow .2s ease;
}
.path-grid > a:nth-child(2) { background: var(--mint); }
.path-grid > a:nth-child(3) { background: var(--sun); }
.path-grid > a:hover { transform: translate(-5px, -5px); box-shadow: 9px 9px 0 var(--ink); }
.path-grid span { color: var(--teal); font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.path-grid h3 { margin: 34px 0 12px; font-size: 24px; }
.path-grid p { color: var(--muted); font-size: 14px; }
.path-grid strong { margin-top: auto; font-size: 13px; }
.section-action { margin: 38px 0 0; }

.inner-hero {
  position: relative; min-height: 410px; padding: 96px 0 78px; display: flex; align-items: center;
  background:
    linear-gradient(90deg, rgba(35,86,216,.07) 1px, transparent 1px),
    linear-gradient(rgba(35,86,216,.07) 1px, transparent 1px),
    var(--paper);
  background-size: 48px 48px;
  border-bottom: 10px solid var(--teal); overflow: hidden;
}
.inner-hero-grid { display: grid; grid-template-columns: 1fr 300px; align-items: center; gap: 80px; }
.inner-hero h1 { max-width: 820px; margin: 0 0 20px; font-size: clamp(44px, 6vw, 76px); }
.inner-hero p:last-child { max-width: 720px; margin: 0; color: var(--muted); font-size: 18px; }
.step-motif { height: 220px; position: relative; }
.step-motif span { position: absolute; display: block; border: 3px solid var(--ink); box-shadow: 8px 8px 0 var(--ink); }
.step-motif span:nth-child(1) { width: 84px; height: 84px; left: 0; bottom: 0; background: var(--teal); }
.step-motif span:nth-child(2) { width: 110px; height: 110px; left: 72px; bottom: 54px; background: var(--sun); }
.step-motif span:nth-child(3) { width: 76px; height: 76px; left: 178px; bottom: 130px; background: var(--mango); }

.library-bar {
  margin-bottom: 26px; padding: 16px 20px; display: flex; justify-content: space-between; gap: 20px;
  color: var(--white); background: var(--ink); border-left: 7px solid var(--sun); font-size: 13px;
}
.catalog-grid { grid-template-columns: repeat(3, 1fr); }
.catalog-card { min-height: 260px; display: flex; flex-direction: column; }
.catalog-card .text-link { margin-top: auto; align-self: flex-start; text-decoration: none; }
.contact-boundary { max-width: 520px; padding: 18px; background: var(--sun); border-left: 6px solid var(--ink); font-weight: 700; }
.boundary-page { background: var(--paper); }
.policy-callout { max-width: 850px; padding: 48px; background: var(--mint); border: 3px solid var(--ink); box-shadow: 12px 12px 0 var(--mango); }

.article-page { padding: 82px 0 100px; background: var(--white); }
.article-layout { display: grid; grid-template-columns: 245px minmax(0, 760px); align-items: start; justify-content: center; gap: 72px; }
.article-aside {
  position: sticky; top: 108px; padding: 24px; background: var(--sun);
  border: 2px solid var(--ink); box-shadow: 7px 7px 0 var(--ink); font-size: 13px;
}
.article-aside span { display: inline-block; margin-bottom: 25px; padding: 5px 8px; color: var(--white); background: var(--teal); font-size: 10px; font-weight: 900; text-transform: uppercase; }
.article-aside strong { display: block; margin-bottom: 8px; }
.article-aside p { margin: 0 0 22px; }
.article-aside a { font-weight: 900; text-decoration: none; }
.article-content { font-size: 17px; line-height: 1.8; }
.article-lead { margin: 0 0 48px; color: var(--ink); font-size: 24px; font-weight: 800; line-height: 1.5; }
.article-content section { padding: 0 0 35px; margin-bottom: 35px; border-bottom: 1px solid var(--line); }
.article-content section h2 { margin-bottom: 14px; font-size: 30px; }
.article-content section p { margin: 0; color: var(--muted); }
.article-exercise { margin: 45px 0 24px; padding: 30px; background: var(--mint); border-left: 8px solid var(--teal); }
.article-exercise h2 { font-size: 27px; }
.article-exercise p, .article-warning p { margin-bottom: 0; }
.article-warning { padding: 22px 25px; color: var(--white); background: var(--ink); }
.article-warning strong { color: var(--sun); }

@media (max-width: 900px) {
  .site-nav {
    position: absolute; top: 76px; right: 0; left: 0; display: none; padding: 18px 20px 24px;
    flex-direction: column; align-items: stretch; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 16px 30px rgba(10,61,76,.1);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 13px 0; color: var(--ink); border-bottom: 1px solid var(--line); }
  .menu-toggle { display: block; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-copy { max-width: 720px; }
  .hero-visual { width: min(680px, 100%); min-height: 420px; margin-inline: auto; }
  .lesson-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .journal-grid, .contact-grid, .source-grid { gap: 44px; }
  .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .inner-hero-grid { grid-template-columns: 1fr 220px; gap: 35px; }
  .article-layout { grid-template-columns: 210px minmax(0, 1fr); gap: 40px; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .topbar { height: 68px; }
  .site-nav { top: 68px; }
  .site-nav a[aria-current="page"] { color: var(--teal); }
  .brand-mark { width: 38px; height: 38px; }
  .brand strong { font-size: 18px; }
  .hero { padding-top: 58px; }
  h1 { font-size: 42px; }
  h2 { font-size: 35px; }
  .lead { font-size: 16px; }
  .hero-actions { display: grid; }
  .btn { width: 100%; }
  .trust-list { gap: 10px 18px; }
  .hero-visual { min-height: 320px; }
  .visual-note { right: 0; bottom: 24px; width: 205px; }
  .disclosure-strip { margin-top: 20px; flex-direction: column; gap: 4px; border-radius: 14px 14px 0 0; }
  .section { padding: 72px 0; }
  .section-heading { margin-bottom: 32px; }
  .heading-row, .lesson-grid, .notes-grid, .about-grid, .journal-grid, .contact-grid, .source-grid, .boundary-grid { grid-template-columns: 1fr; }
  .heading-row { gap: 0; }
  .lesson-card { min-height: 270px; }
  .note-card.featured { grid-template-columns: 1fr; }
  .note-art { min-height: 240px; }
  .note-body { padding: 28px; }
  .about-grid, .journal-grid, .contact-grid, .source-grid { gap: 34px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid > div:nth-child(2) { border-right: 0; }
  .metrics-grid > div:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.16); }
  .source-links a { flex-direction: column; gap: 2px; }
  .source-links small { text-align: left; }
  .contact-form { padding: 24px; }
  .footer-top, .footer-meta, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .consent-banner { left: 12px; right: 12px; bottom: 12px; }
  .footer nav { gap: 14px 20px; }
  .modal { padding: 12px; }
  .modal-dialog { padding: 30px 22px; max-height: calc(100vh - 24px); }
  .path-grid, .catalog-grid, .inner-hero-grid, .article-layout, .home-cta-panel { grid-template-columns: 1fr; }
  .path-grid > a { min-height: 235px; }
  .home-cta-panel { padding: 30px 24px; }
  .inner-hero { min-height: 390px; padding: 72px 0 58px; }
  .inner-hero h1 { font-size: 43px; }
  .inner-hero p:last-child { font-size: 16px; }
  .step-motif { display: none; }
  .library-bar { align-items: flex-start; flex-direction: column; gap: 2px; }
  .article-page { padding: 55px 0 72px; }
  .article-aside { position: static; }
  .article-content { font-size: 16px; }
  .article-lead { font-size: 20px; }
  .policy-callout { padding: 30px 24px; }
}

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