:root {
  color-scheme: light;
  --ink: #102633;
  --navy: #0d3448;
  --navy-deep: #082838;
  --teal: #148f7a;
  --teal-bright: #35c5a5;
  --coral: #f36b4f;
  --teal-text: #0b7163;
  --coral-text: #a83f2c;
  --sun: #f7c94b;
  --cream: #fbf7ef;
  --paper: #fffdf8;
  --mist: #e7f2ef;
  --sand: #f3e7cf;
  --line: #c8d7d3;
  --muted: #435c66;
  --serif: Georgia, "Times New Roman", serif;
  --sans: "Aptos", "Segoe UI", Arial, sans-serif;
  --shadow: 0 24px 70px rgba(13, 52, 72, 0.13);
}

* { box-sizing: border-box; }
html { overflow-x: hidden; scroll-behavior: smooth; }
section[id] { scroll-margin-top: 96px; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.62;
}
a { color: inherit; }
img { max-width: 100%; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { color: var(--navy); }
h1, h2, h3 { font-family: var(--serif); letter-spacing: -0.035em; }
h1 { margin-bottom: 26px; font-size: clamp(3.4rem, 6.8vw, 6.75rem); line-height: 0.89; }
h2 { margin-bottom: 24px; font-size: clamp(2.4rem, 4.7vw, 4.7rem); line-height: 0.97; }
h3 { line-height: 1.08; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 82px;
  border-bottom: 1px solid rgba(16, 38, 51, 0.1);
  background: rgba(255, 253, 248, 0.94);
  padding: 14px max(24px, calc((100% - 1240px) / 2));
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { display: block; width: 154px; height: auto; }
.site-nav { display: flex; align-items: center; gap: 6px; min-width: 0; max-width: 100%; }
.site-nav a { white-space: nowrap; text-decoration: none; }
.site-nav .nav-link {
  border-radius: 999px;
  color: var(--navy);
  padding: 10px 14px;
  font-size: 0.85rem;
  font-weight: 750;
}
.site-nav .nav-link:hover,
.site-nav .nav-link:focus-visible { background: var(--mist); color: var(--teal); }
.site-nav .nav-link[aria-current="page"] { background: var(--navy); color: white; }
.language-switch {
  display: inline-flex;
  gap: 5px;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--navy);
  padding: 7px 10px;
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .06em;
}
.language-switch:hover { border-color: var(--teal); background: var(--mist); color: var(--teal-text); }
.language-switch:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 3px;
}
.language-flag {
  display: inline-block;
  flex: 0 0 auto;
  width: 20px;
  height: 14px;
  border: 1px solid rgba(10, 52, 72, .22);
  border-radius: 2px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .2);
}
.flag-fr { background: linear-gradient(90deg, #0055a4 0 33.333%, white 33.333% 66.666%, #ef4135 66.666%); }
.flag-gb {
  background:
    linear-gradient(90deg, transparent 43%, #c8102e 43% 57%, transparent 57%),
    linear-gradient(transparent 38%, #c8102e 38% 62%, transparent 62%),
    linear-gradient(90deg, transparent 36%, white 36% 64%, transparent 64%),
    linear-gradient(transparent 28%, white 28% 72%, transparent 72%),
    linear-gradient(35deg, transparent 44%, white 44% 48%, #c8102e 48% 52%, white 52% 56%, transparent 56%),
    linear-gradient(-35deg, transparent 44%, white 44% 48%, #c8102e 48% 52%, white 52% 56%, transparent 56%),
    #012169;
}
.nav-cta {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  margin-left: 7px;
  border: 2px solid var(--navy);
  border-radius: 999px;
  background: var(--sun);
  padding: 9px 15px;
  color: var(--navy);
  font-size: 0.84rem;
  font-weight: 800;
  box-shadow: 3px 3px 0 var(--navy);
}
.nav-cta:hover,
.nav-cta:focus-visible { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--navy); }

.hero,
.section-shell,
footer { width: min(1240px, calc(100% - 56px)); margin-inline: auto; }
.section-shell { padding-block: clamp(84px, 10vw, 138px); }
.eyebrow {
  margin: 0 0 18px;
  color: var(--teal-text);
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  gap: clamp(54px, 8vw, 112px);
  align-items: center;
  min-height: 760px;
  padding-block: 82px 112px;
}
.hero::before {
  position: absolute;
  z-index: -1;
  inset: 0 auto 0 50%;
  width: 50vw;
  background-image: linear-gradient(rgba(20,143,122,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(20,143,122,.07) 1px, transparent 1px);
  background-size: 28px 28px;
  content: "";
}
.hero-copy { position: relative; z-index: 1; }
.hero h1 { max-width: 760px; }
.hero-intro { max-width: 690px; margin-bottom: 30px; color: var(--muted); font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.hero-note { color: var(--muted); font-family: var(--serif); font-size: 0.93rem; font-style: italic; }
.work-note { max-width: 660px; margin: 34px 0 0; border-left: 4px solid var(--teal); color: var(--muted); padding-left: 16px; font-size: .88rem; }
.portrait { position: relative; margin: 0; transform: rotate(1.5deg); }
.portrait::before {
  position: absolute;
  z-index: -1;
  inset: -26px 22px 36px -28px;
  border: 3px solid var(--navy);
  background: var(--sun);
  content: "";
  transform: rotate(-4deg);
}
.portrait img { display: block; width: 100%; aspect-ratio: 4 / 5; border: 8px solid white; object-fit: cover; object-position: center; box-shadow: var(--shadow); }
.portrait figcaption { position: relative; z-index: 1; max-width: 360px; margin: 18px 0 0 auto; background: var(--cream); color: var(--coral-text); padding: 4px 0 0 12px; font-family: var(--serif); font-style: italic; line-height: 1.35; transform: rotate(-1.5deg); }

.button-link,
.text-link {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: var(--navy);
  font-size: 0.92rem;
  font-weight: 800;
  text-decoration: none;
}
.button-link { border: 2px solid var(--navy); background: var(--paper); padding: 12px 18px; box-shadow: 4px 4px 0 var(--coral); }
.button-link:hover,
.button-link:focus-visible { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--coral); }
.text-link { border-bottom: 2px solid var(--coral); }
.text-link:hover,
.text-link:focus-visible { color: var(--teal); border-color: var(--teal); }

.section-heading { max-width: 800px; }
.wide-heading { max-width: 960px; }
.section-heading > p:last-child,
.wide-heading > p:last-child { color: var(--muted); font-size: 1.1rem; }

.projects {
  width: 100%;
  max-width: none;
  background: var(--mist);
  padding-inline: max(28px, calc((100% - 1240px) / 2));
}
.project-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; margin-top: 58px; }
.project-card {
  position: relative;
  display: flex;
  min-height: 390px;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
  border: 2px solid var(--navy);
  background: var(--paper);
  padding: 34px;
  box-shadow: 8px 8px 0 rgba(13, 52, 72, 0.14);
}
.project-card::after { position: absolute; right: -20px; bottom: -65px; color: rgba(13,52,72,.06); font-family: var(--serif); font-size: 12rem; line-height: 1; }
.numeria-card { grid-column: span 5; background: var(--navy); color: white; border-color: var(--navy); }
.numeria-card::after { content: "N"; color: rgba(255,255,255,.06); }
.curriculum-card { grid-column: span 4; }
.curriculum-card::after { content: "T"; }
.ai-card { grid-column: span 3; background: #fff8df; }
.ai-card::after { content: "AI"; font-size: 8rem; }
.project-card h3 { position: relative; z-index: 1; margin: 44px 0 16px; font-size: clamp(2rem, 3vw, 3rem); }
.project-card p { position: relative; z-index: 1; color: var(--muted); }
.project-card .text-link { position: relative; z-index: 1; margin-top: auto; }
.numeria-card h3,
.numeria-card .text-link { color: white; }
.numeria-card p { color: #d8e9e5; }
.project-status,
.class-kicker { color: var(--teal-text); font-size: 0.7rem; font-weight: 850; letter-spacing: 0.13em; text-transform: uppercase; }
.numeria-card .project-status { color: var(--teal-bright); }
.project-status.in-progress { color: #8b6105; }
.separation-note { max-width: 880px; margin: 36px 0 0; color: var(--muted); font-size: 0.92rem; }

.build-ai { width: 100%; max-width: none; background: var(--sand); padding-inline: max(28px, calc((100% - 1240px) / 2)); }
.build-ai-heading { max-width: 930px; }
.build-ai-heading > p:last-child { color: var(--muted); font-size: 1.1rem; }
.status-pill { display: inline-block; margin-bottom: 28px; border: 2px solid #8b6105; border-radius: 999px; background: var(--sun); color: #684800; padding: 5px 12px; font-size: 0.67rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.build-ai-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; margin-top: 58px; border-top: 2px solid rgba(13,52,72,.2); padding-top: 42px; }
.build-ai-grid h3 { font-size: 1.7rem; }
.build-ai-grid p,
.build-ai-grid li { color: var(--muted); }
.build-ai-grid ul { margin: 0; padding-left: 1.25rem; }
.build-ai-grid li + li { margin-top: 10px; }
.build-ai-conclusion { margin: 30px 0 0; border-top: 1px solid rgba(13,52,72,.2); padding-top: 24px; font-weight: 650; }
.about { border-bottom: 1px solid var(--line); }
.about > * { max-width: 860px; }
.about-copy { color: var(--muted); font-size: 1.07rem; columns: 2; column-gap: 54px; }
.about-copy p { break-inside: avoid; margin-bottom: 18px; }
.about-link { margin-top: 12px; }

/* About */
.about-page { background: var(--cream); }
.about-hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); gap: clamp(54px, 8vw, 110px); align-items: center; min-height: 760px; }
.about-hero h1 { max-width: 780px; }
.about-portrait { max-width: 470px; justify-self: end; }
.about-story { display: grid; grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr); gap: 84px; border-bottom: 1px solid var(--line); }
.about-story-heading { position: sticky; top: 176px; align-self: start; }
.about-story-copy { max-width: 740px; color: var(--muted); font-size: 1.08rem; }
.about-story-copy p + p { margin-top: 24px; }
.education-band { width: 100%; background: var(--navy-deep); color: #d9e9e5; }
.education-band h2,
.education-band h3 { color: white; }
.education-band .eyebrow,
.education-band .class-kicker { color: var(--teal-bright); }
.education-band .section-heading > p:last-child { color: #c5d8d4; }
.education-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; margin-top: 58px; }
.education-grid article { border: 1px solid rgba(255,255,255,.2); border-radius: 18px; background: rgba(255,255,255,.045); padding: 36px; }
.education-grid h3 { margin: 22px 0 18px; font-size: 2.05rem; }
.education-grid p { color: #c5d8d4; }
.source-link { display: inline-flex; gap: 8px; align-items: center; border-bottom: 2px solid var(--sun); color: white; font-size: .82rem; font-weight: 800; text-decoration: none; }
.source-link:hover,
.source-link:focus-visible { color: var(--sun); }
.education-note { max-width: 980px; margin: 38px 0 0; border-left: 4px solid var(--sun); color: #d9e9e5; padding-left: 18px; }
.career-section { border-bottom: 1px solid var(--line); }
.career-timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 58px; }
.career-timeline article { border-top: 4px solid var(--teal); background: var(--paper); padding: 28px; box-shadow: 0 15px 35px rgba(13,52,72,.08); }
.career-timeline article:nth-child(2) { border-color: var(--coral); }
.career-timeline article:nth-child(3) { border-color: var(--sun); }
.career-timeline span { color: var(--coral-text); font-size: .72rem; font-weight: 850; letter-spacing: .12em; }
.career-timeline h3 { margin: 24px 0 12px; font-size: 1.8rem; }
.career-timeline p { margin: 0; color: var(--muted); font-size: .92rem; }
.selected-work { display: grid; grid-template-columns: minmax(280px, .78fr) minmax(0, 1.22fr); gap: 74px; margin-top: 94px; border-top: 2px solid var(--navy); padding-top: 54px; }
.selected-work > div:first-child { position: sticky; top: 176px; align-self: start; }
.selected-work h3 { font-size: 2.35rem; }
.confidentiality-note { color: var(--muted); font-size: .86rem; }
.selected-work-list { display: grid; gap: 18px; }
.selected-work-list article { display: grid; grid-template-columns: 48px 1fr; gap: 22px; border: 1px solid var(--line); border-radius: 16px; background: white; padding: 28px; }
.selected-work-list span { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--mist); color: var(--teal); font-size: .7rem; font-weight: 850; }
.selected-work-list h4 { margin-bottom: 10px; font-family: var(--sans); font-size: 1.03rem; letter-spacing: 0; }
.selected-work-list p { margin: 0; color: var(--muted); font-size: .92rem; }
.teaching-bridge { width: 100%; background: var(--sand); }
.teaching-bridge h2 { max-width: 980px; }
.bridge-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 54px; max-width: 1040px; margin-bottom: 34px; }
.bridge-grid p { color: var(--muted); }
.inline-source-link { border-bottom: 2px solid var(--coral); color: var(--navy); font-weight: 800; text-decoration: none; }
.inline-source-link:hover,
.inline-source-link:focus-visible { border-color: var(--teal); color: var(--teal-text); }
.life-section { border-bottom: 1px solid var(--line); }
.life-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 52px; }
.life-grid article { border: 2px solid var(--navy); border-radius: 16px; background: var(--paper); padding: 32px; }
.life-grid article:nth-child(2) { box-shadow: 7px 7px 0 var(--coral); }
.life-grid article:nth-child(3) { box-shadow: 7px 7px 0 var(--teal); }
.life-grid article:nth-child(4) { box-shadow: 7px 7px 0 var(--sun); }
.life-grid h3 { font-size: 1.75rem; }
.life-grid p { margin: 0; color: var(--muted); font-size: .94rem; }
.life-grid .life-kicker { margin-bottom: 10px; color: var(--coral-text); font-size: .68rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.life-link { display: inline-flex; gap: 8px; align-items: center; margin-top: 22px; border-bottom: 2px solid var(--coral); color: var(--navy); font-size: .82rem; font-weight: 850; text-decoration: none; }
.life-link:hover,
.life-link:focus-visible { border-color: var(--teal); color: var(--teal-text); }
.why-maths-dad { max-width: 1040px; text-align: center; }
.why-maths-dad blockquote { margin: 0 auto 34px; color: var(--navy); font-family: var(--serif); font-size: clamp(1.65rem, 3.2vw, 2.7rem); line-height: 1.26; }
.about-page footer { background: var(--cream); }

/* Numeria */
.numeria-page { background: var(--navy-deep); }
.numeria-page main { overflow: hidden; background: radial-gradient(circle at 88% 8%, rgba(53,197,165,.22), transparent 34rem), var(--navy-deep); color: #eef8f5; }
.numeria-page main h1,
.numeria-page main h2,
.numeria-page main h3,
.numeria-page main h4 { color: white; }
.numeria-page main .eyebrow { color: var(--teal-bright); }
.numeria-hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr); gap: 46px 84px; align-items: end; padding-top: 102px; padding-bottom: 100px; }
.numeria-hero h1 { max-width: 760px; margin: 0; font-size: clamp(3.6rem, 7.2vw, 7.2rem); }
.numeria-hero-copy > p { color: #d4e6e2; font-size: 1.04rem; }
.numeria-origin { margin: 28px 0; border-left: 4px solid var(--sun); background: rgba(255,255,255,.06); padding: 16px 18px; color: #f4fbf8 !important; font-size: .92rem !important; }
.numeria-origin strong { color: var(--sun); }
.numeria-volunteer-note { margin-top: 24px; border: 1px solid rgba(255,255,255,.22); border-radius: 14px; background: rgba(255,255,255,.045); padding: 20px; }
.numeria-volunteer-note p { margin: 0 0 18px; color: #d4e6e2; font-size: .94rem; }
.light-button { border-color: var(--sun); background: var(--sun); color: var(--navy-deep); box-shadow: 4px 4px 0 var(--teal-bright); }
.numeria-hero-visual { position: relative; grid-column: 1 / -1; margin: 30px 0 0; border: 2px solid rgba(255,255,255,.28); border-radius: 22px; background: #eff2ed; padding: 44px 12px 12px; box-shadow: 0 42px 110px rgba(0,0,0,.38); }
.numeria-hero-visual::before { position: absolute; z-index: -1; right: -30px; bottom: -30px; width: 180px; height: 180px; border-radius: 50%; background: var(--coral); content: ""; }
.numeria-hero-visual img { display: block; width: 100%; height: auto; border-radius: 12px; object-fit: contain; }
.browser-chrome { position: absolute; top: 0; left: 0; display: flex; align-items: center; width: 100%; height: 44px; gap: 7px; padding: 0 16px; color: #5c6b70; font-size: .72rem; }
.browser-chrome i { width: 10px; height: 10px; border-radius: 50%; background: var(--coral); }
.browser-chrome i:nth-child(2) { background: var(--sun); }
.browser-chrome i:nth-child(3) { background: var(--teal-bright); }
.browser-chrome span { margin-left: 8px; }
.numeria-hero-visual figcaption { position: absolute; right: 26px; bottom: -54px; max-width: 440px; border: 2px solid var(--navy-deep); background: var(--sun); color: var(--navy-deep); padding: 13px 18px; font-size: .9rem; box-shadow: 5px 5px 0 var(--coral); }
.numeria-showcase,
.numeria-details { border-top: 1px solid rgba(255,255,255,.13); }
.showcase-heading { max-width: 900px; }
.showcase-heading > p:last-child { color: #c5d8d4; font-size: 1.08rem; }
.numeria-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 42px; margin-top: 66px; }
.numeria-gallery figure { min-width: 0; margin: 0; }
.screenshot-frame { overflow: hidden; border: 1px solid rgba(255,255,255,.24); border-radius: 18px; background: #e9eeeb; padding: 8px; box-shadow: 0 30px 70px rgba(0,0,0,.28); }
.screenshot-frame img { display: block; width: 100%; height: auto; border-radius: 11px; object-fit: contain; }
.numeria-gallery figcaption { max-width: 560px; margin-top: 16px; color: #c5d8d4; font-size: .9rem; }
.numeria-gallery figcaption strong { color: white; }
.numeria-steps { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 62px; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; overflow: hidden; }
.numeria-steps article { min-height: 290px; border-right: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.035); padding: 30px; }
.numeria-steps article:last-child { border-right: 0; }
.numeria-steps span { display: inline-grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--sun); border-radius: 50%; color: var(--sun); font-size: .7rem; font-weight: 850; }
.numeria-steps h3 { margin: 52px 0 14px; font-size: 1.55rem; }
.numeria-steps p { color: #c5d8d4; font-size: .92rem; }
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 76px; }
.why-grid article { border: 2px solid var(--teal-bright); border-radius: 18px; background: rgba(255,255,255,.035); padding: 36px; }
.why-grid .ai-boundary { border-color: var(--sun); }
.why-grid h3 { font-size: 2rem; }
.why-grid p:not(.eyebrow) { color: #d4e6e2; }
.comparison { margin-top: 76px; border: 1px solid rgba(255,255,255,.18); border-radius: 18px; background: rgba(0,0,0,.1); padding: 42px; }
.comparison > h3 { max-width: 790px; font-size: 2.25rem; }
.comparison-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 34px; }
.comparison-grid article { border-top: 2px solid rgba(255,255,255,.25); padding-top: 22px; }
.comparison-grid .comparison-featured { border-color: var(--sun); }
.comparison-grid h4 { margin-bottom: 8px; font-family: var(--sans); font-size: 1rem; letter-spacing: 0; }
.comparison-grid p,
.comparison-note { color: #c5d8d4; font-size: .92rem; }
.comparison-note { max-width: 900px; margin: 30px 0 0; }
.numeria-page footer { background: var(--cream); }

/* Teaching */
.teaching-page { background: var(--cream); }
.teaching-hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr); gap: 70px; align-items: end; min-height: 690px; }
.teaching-hero h1 { max-width: 880px; }
.school-note { max-width: 780px; margin: 26px 0 0; border-left: 4px solid var(--coral); color: var(--muted); padding-left: 16px; font-size: .9rem; }
.school-note a { border-bottom: 2px solid var(--teal); color: var(--navy); font-weight: 850; text-decoration: none; }
.school-note a:hover,
.school-note a:focus-visible { border-color: var(--coral); color: var(--teal-text); }
.teaching-manifesto { display: grid; border: 2px solid var(--navy); background: var(--sun); padding: 18px 28px; box-shadow: 8px 8px 0 var(--coral); transform: rotate(1deg); }
.teaching-manifesto span { border-bottom: 1px solid rgba(13,52,72,.28); color: var(--navy); padding: 13px 0; font-family: var(--serif); font-size: 1.13rem; font-weight: 700; }
.teaching-manifesto span:last-child { border-bottom: 0; }
.page-index { position: sticky; top: 82px; z-index: 25; display: flex; justify-content: center; width: 100%; max-width: none; overflow-x: auto; background: var(--navy); padding: 0 max(20px, calc((100% - 1240px) / 2)); }
.page-index a { display: flex; flex: 1 0 auto; gap: 10px; align-items: center; justify-content: center; min-height: 66px; border-right: 1px solid rgba(255,255,255,.14); color: white; padding: 12px 18px; font-size: .78rem; font-weight: 800; text-decoration: none; }
.page-index a:first-child { border-left: 1px solid rgba(255,255,255,.14); }
.page-index a:hover,
.page-index a:focus-visible { background: rgba(255,255,255,.08); color: var(--sun); }
.page-index span { color: var(--sun); font-size: .66rem; }
.teaching-section { border-bottom: 1px solid var(--line); }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 58px; }
.principle-grid article { min-height: 300px; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); padding: 30px; box-shadow: 0 15px 35px rgba(13,52,72,.07); }
.principle-grid article:nth-child(2),
.principle-grid article:nth-child(5) { transform: translateY(20px); }
.principle-grid span { color: var(--coral-text); font-size: .7rem; font-weight: 850; }
.principle-grid h3 { margin: 30px 0 14px; font-size: 1.65rem; }
.principle-grid p { color: var(--muted); font-size: .94rem; }
.concise-principles article:nth-child(2) { transform: none; }
.elevation-band { width: 100%; background: var(--navy-deep); color: #e6f1ee; }
.elevation-band h2 { max-width: 960px; color: white; }
.elevation-band .eyebrow { color: var(--teal-bright); }
.elevation-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 52px; max-width: 1040px; }
.elevation-grid p { color: #c5d8d4; }
.elevation-path { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 58px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; padding: 20px 28px; }
.elevation-path span { color: white; font-family: var(--serif); font-size: 1.08rem; }
.elevation-path b { color: var(--sun); }
.tradition-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 54px; }
.tradition-grid article { border: 2px solid var(--navy); border-radius: 18px; background: white; padding: 38px; box-shadow: 7px 7px 0 var(--teal); }
.tradition-grid .american-tradition { box-shadow: 7px 7px 0 var(--coral); }
.tradition-label { color: var(--teal); font-size: .72rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.tradition-grid h3 { font-size: 2rem; }
.tradition-grid li { color: var(--muted); }
.tradition-grid li + li { margin-top: 10px; }
.synthesis-copy { max-width: 940px; margin: 36px 0 0; border-left: 6px solid var(--coral); background: var(--mist); color: var(--muted); padding: 26px 30px; font-size: 1.05rem; }
.synthesis-statement { display: grid; grid-template-columns: 96px 1fr; gap: 28px; align-items: center; margin-top: 36px; border-radius: 18px; background: var(--mist); padding: 32px; }
.synthesis-statement > span { color: var(--coral); font-family: var(--serif); font-size: 4.5rem; text-align: center; }
.synthesis-statement p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.curricula-section { background: #eaf2ef; }
.course-block { margin-top: 64px; overflow: hidden; border: 2px solid var(--navy); border-radius: 20px; background: var(--paper); box-shadow: 10px 10px 0 var(--teal); }
.course-block.core-maths-course { box-shadow: 10px 10px 0 var(--navy); }
.course-block.finance-course { box-shadow: 10px 10px 0 var(--coral); }
.course-block.grade10-course { box-shadow: 10px 10px 0 var(--sun); }
.course-block > header { display: grid; grid-template-columns: 210px 1fr; gap: 36px; border-bottom: 1px solid var(--line); padding: 38px; }
.course-number { display: block; color: var(--coral); font-family: var(--serif); font-size: 4rem; line-height: 1; }
.course-audience { margin: 12px 0 0; color: var(--muted); font-size: .78rem; }
.course-subject { margin: 0 0 13px; color: var(--teal-text); font-size: .73rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.course-block h3 { margin: 0; font-size: clamp(2rem, 3.2vw, 3.2rem); }
.course-body { display: grid; grid-template-columns: .78fr 1.22fr; gap: 58px; padding: 38px; }
.course-body h4 { margin-bottom: 12px; font-family: var(--sans); font-size: .76rem; letter-spacing: .13em; text-transform: uppercase; }
.course-body p { color: var(--muted); }
.unit-list { margin: 0; padding-left: 1.4rem; columns: 2; column-gap: 34px; }
.unit-list li { break-inside: avoid; color: var(--muted); padding: 0 0 16px 5px; font-size: .9rem; }
.unit-list li::marker { color: var(--teal); font-weight: 850; }
.unit-list strong { display: block; color: var(--ink); line-height: 1.3; }
.unit-topic { display: block; margin-top: 4px; color: var(--muted); font-size: .78rem; line-height: 1.42; }
.grade10-units { columns: 2; }
.grade10-units em { display: block; color: var(--coral-text); font-size: .72rem; }
.course-visual-row { padding: 0 38px 38px; }
.course-visual { max-width: 720px; margin: 0 auto; border: 1px solid var(--line); border-radius: 16px; background: #f5faf8; padding: 18px; }
.course-visual figcaption { margin-top: 16px; color: var(--muted); font-size: .76rem; line-height: 1.45; }
.adaptive-route { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr); gap: 14px; align-items: center; margin: 0 38px 38px; border-radius: 14px; background: var(--navy); color: white; padding: 22px 24px; }
.adaptive-route span { font-size: .8rem; font-weight: 800; text-align: center; }
.adaptive-route b { color: var(--sun); font-size: 1.25rem; }
.offer-comparison { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: 8px; align-items: stretch; }
.offer-card { min-width: 0; border: 1px solid var(--line); border-radius: 10px; background: white; padding: 12px; }
.offer-card span,
.data-stage > span { display: block; color: var(--teal-text); font-size: .62rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.offer-card strong { display: block; margin: 7px 0 4px; color: var(--navy); font-family: var(--serif); font-size: 1rem; line-height: 1.08; }
.offer-card small { display: block; color: var(--muted); font-size: .66rem; line-height: 1.3; }
.finance-or { align-self: center; color: var(--coral-text); font-family: var(--serif); font-size: .78rem; font-style: italic; }
.break-even { display: grid; grid-template-columns: auto 1fr auto; gap: 8px; align-items: center; margin-top: 14px; color: var(--muted); font-size: .59rem; font-weight: 750; }
.break-even i { position: relative; display: block; height: 8px; border-radius: 999px; background: linear-gradient(90deg, var(--coral), var(--sun) 50%, var(--teal)); }
.break-even i b { position: absolute; top: 50%; left: 52%; width: 4px; height: 18px; border-radius: 4px; background: var(--navy); transform: translate(-50%, -50%); }
.data-flow { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr); gap: 7px; align-items: center; }
.data-flow > b { color: var(--coral-text); font-size: 1.1rem; }
.data-stage { min-width: 0; min-height: 92px; border: 1px solid var(--line); border-radius: 10px; background: white; padding: 10px; }
.mini-table { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; margin-top: 12px; }
.mini-table i { height: 10px; border-radius: 2px; background: var(--mist); }
.mini-table i:nth-child(2n) { background: #f9dfd7; }
.mini-chart { display: flex; gap: 4px; align-items: end; height: 50px; margin-top: 8px; border-bottom: 2px solid var(--navy); padding-inline: 3px; }
.mini-chart i { flex: 1; height: 35%; background: var(--teal); }
.mini-chart i:nth-child(2) { height: 74%; background: var(--coral); }
.mini-chart i:nth-child(3) { height: 52%; background: var(--sun); }
.mini-chart i:nth-child(4) { height: 88%; background: var(--navy); }
.data-claim strong { display: block; margin-top: 12px; color: var(--navy); font-family: var(--serif); font-size: .92rem; line-height: 1.05; }
.course-close { margin: 0; border-top: 1px solid var(--line); background: #f2f6f4; color: var(--muted); padding: 26px 38px; font-size: .92rem; }
.nj-section { border-bottom: 1px solid var(--line); }
.nj-comparison { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 54px; }
.nj-comparison article { border: 2px solid var(--navy); border-radius: 16px; background: var(--paper); padding: 32px; }
.nj-comparison article:last-child { border-color: var(--coral); }
.nj-comparison h3 { font-size: 1.8rem; }
.nj-comparison li { color: var(--muted); }
.nj-comparison li + li { margin-top: 9px; }
.nj-note { margin-top: 38px; border-left: 6px solid var(--sun); background: var(--sand); padding: 30px; }
.nj-note p { max-width: 940px; color: var(--muted); }
.source-links { display: flex; flex-wrap: wrap; gap: 22px; }
.source-links a { border-bottom: 2px solid var(--coral); color: var(--navy); font-size: .82rem; font-weight: 800; text-decoration: none; }
.progression-section { background: var(--sand); }
.progression-path { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin: 58px 0 0; padding: 0; list-style: none; }
.progression-path li { min-height: 285px; border: 2px solid var(--navy); border-radius: 14px; background: var(--paper); padding: 24px 20px; }
.progression-path li:nth-child(even) { transform: translateY(28px); }
.progression-path span { color: var(--coral); font-size: .7rem; font-weight: 850; }
.progression-path h3 { margin: 52px 0 12px; font-size: 1.4rem; }
.progression-path p { color: var(--muted); font-size: .86rem; }
.materials-band { width: 100%; background: var(--sand); }
.materials-section { display: grid; grid-template-columns: minmax(360px, .88fr) minmax(0, 1.12fr); gap: 84px; align-items: start; }
.materials-section.section-shell { padding-block: clamp(58px, 6vw, 86px); }
.materials-heading { border-left: 7px solid var(--coral); padding-left: 28px; }
.materials-heading h2 { margin-bottom: 0; font-size: clamp(2.15rem, 3.4vw, 3.3rem); }
.materials-copy { max-width: 720px; border-top: 2px solid var(--navy); color: var(--muted); padding-top: 28px; font-size: 1.05rem; }
.materials-status { margin: 30px 0 0; border-radius: 12px; background: var(--paper); padding: 18px 20px; font-size: .82rem; }
.materials-status strong { color: var(--navy); }

footer { display: flex; align-items: center; justify-content: space-between; min-height: 128px; }
footer img { display: block; width: 118px; height: auto; }
footer p { margin: 0; color: #60747c; font-size: .78rem; }

@media (max-width: 1020px) {
  .hero { grid-template-columns: 1fr .82fr; gap: 50px; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .numeria-card,
  .curriculum-card,
  .ai-card { grid-column: auto; }
  .numeria-card { grid-row: span 2; }
  .numeria-hero { grid-template-columns: 1fr 1fr; gap: 42px; }
  .numeria-steps { grid-template-columns: repeat(2, 1fr); }
  .numeria-steps article:nth-child(2) { border-right: 0; }
  .numeria-steps article:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.15); }
  .teaching-hero { grid-template-columns: 1fr .7fr; }
  .about-hero { grid-template-columns: 1fr .72fr; gap: 54px; }
  .career-timeline { grid-template-columns: repeat(2, 1fr); }
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-grid article:nth-child(2),
  .principle-grid article:nth-child(5) { transform: none; }
  .progression-path { grid-template-columns: repeat(3, 1fr); }
  .progression-path li:nth-child(even) { transform: none; }
  .materials-section { grid-template-columns: 1fr; gap: 42px; }
}

@media (min-width: 761px) and (max-width: 1120px) {
  .site-header { position: relative; flex-wrap: wrap; gap: 12px; }
  .site-nav { width: 100%; flex-wrap: wrap; justify-content: center; }
  .page-index { position: relative; top: auto; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .site-header { position: relative; align-items: flex-start; flex-direction: column; gap: 14px; padding: 16px 18px 12px; }
  .brand img { width: 132px; }
  .site-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; overflow: visible; padding-bottom: 4px; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav .nav-link { justify-content: center; border: 1px solid var(--line); background: white; padding: 9px 12px; font-size: .78rem; text-align: center; white-space: normal; }
  .site-nav .nav-link[aria-current="page"] { border-color: var(--navy); }
  .language-switch { min-height: 0; border-radius: 8px; padding: 9px 12px; font-size: .78rem; }
  .nav-cta { justify-content: center; margin-left: 0; padding: 8px 12px; font-size: .77rem; text-align: center; white-space: normal; box-shadow: 2px 2px 0 var(--navy); }
  .hero,
  .section-shell,
  footer { width: min(100% - 34px, 1240px); }
  .section-shell { padding-block: 78px; }
  h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
  h2 { font-size: clamp(2.35rem, 11vw, 3.6rem); }
  .hero { grid-template-columns: 1fr; gap: 68px; min-height: auto; padding-block: 68px 86px; }
  .hero::before { inset: auto 0 20px 24%; width: auto; height: 49%; }
  .hero-intro { font-size: 1.02rem; }
  .portrait { width: calc(100% - 20px); margin-left: 20px; }
  .portrait::before { inset: -18px 15px 28px -20px; }
  .projects,
  .build-ai { width: 100%; padding-inline: 17px; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card { min-height: 320px; padding: 28px; }
  .numeria-card { grid-row: auto; }
  .about-copy { columns: 1; }
  .build-ai-grid { grid-template-columns: 1fr; gap: 28px; }
  .about-hero,
  .about-story,
  .education-grid,
  .career-timeline,
  .selected-work,
  .bridge-grid,
  .life-grid,
  .materials-section { grid-template-columns: 1fr; }
  .about-hero { gap: 68px; min-height: auto; }
  .about-portrait { max-width: none; justify-self: stretch; }
  .about-story { gap: 30px; }
  .about-story-heading,
  .selected-work > div:first-child { position: static; }
  .education-grid article { padding: 28px; }
  .career-timeline { gap: 16px; }
  .selected-work { gap: 30px; margin-top: 72px; padding-top: 42px; }
  .selected-work-list article { grid-template-columns: 40px 1fr; gap: 16px; padding: 22px; }
  .selected-work-list span { width: 38px; height: 38px; }
  .materials-section { gap: 26px; }
  .numeria-hero { grid-template-columns: 1fr; gap: 34px; padding-top: 74px; }
  .numeria-hero h1 { font-size: clamp(3rem, 15vw, 4.9rem); }
  .numeria-hero-visual { grid-column: 1; margin-top: 32px; border-radius: 14px; padding: 34px 7px 7px; }
  .browser-chrome { height: 34px; }
  .numeria-hero-visual figcaption { position: relative; right: auto; bottom: auto; max-width: none; margin: 12px 5px 4px; box-shadow: 3px 3px 0 var(--coral); }
  .numeria-gallery,
  .why-grid,
  .comparison-grid { grid-template-columns: 1fr; gap: 36px; }
  .numeria-steps { grid-template-columns: 1fr; }
  .numeria-steps article { min-height: 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.15); }
  .numeria-steps article:last-child { border-bottom: 0; }
  .numeria-steps h3 { margin-top: 28px; }
  .comparison { padding: 28px 22px; }
  .teaching-hero { grid-template-columns: minmax(0, 1fr); gap: 52px; min-height: auto; }
  .teaching-hero > * { min-width: 0; }
  .teaching-manifesto { width: calc(100% - 8px); max-width: 100%; transform: none; }
  .page-index { position: relative; top: auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: visible; padding-inline: 0; }
  .page-index a { min-height: 58px; justify-content: flex-start; border-bottom: 1px solid rgba(255,255,255,.14); white-space: normal; }
  .principle-grid,
  .elevation-grid,
  .tradition-grid,
  .course-body,
  .nj-comparison { grid-template-columns: 1fr; }
  .principle-grid article { min-height: 0; }
  .elevation-path { align-items: stretch; flex-direction: column; border-radius: 18px; }
  .elevation-path b { transform: rotate(90deg); align-self: flex-start; }
  .synthesis-statement { grid-template-columns: 1fr; }
  .synthesis-statement > span { text-align: left; }
  .course-block > header { grid-template-columns: 1fr; padding: 28px; }
  .course-body { gap: 22px; padding: 28px; }
  .course-visual-row { padding: 0 28px 28px; }
  .adaptive-route { grid-template-columns: 1fr; justify-items: start; margin: 0 28px 28px; }
  .adaptive-route span { text-align: left; }
  .adaptive-route b { transform: rotate(90deg); }
  .unit-list,
  .grade10-units { columns: 1; }
  .course-close { padding: 24px 28px; }
  .progression-path { grid-template-columns: 1fr; }
  .progression-path li { min-height: 0; }
  .progression-path h3 { margin-top: 24px; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; gap: 10px; }
}

@media (max-width: 390px) {
  .site-nav .nav-link,
  .language-switch,
  .nav-cta { padding-inline: 8px; font-size: .72rem; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .offer-comparison,
  .data-flow { grid-template-columns: 1fr; }
  .finance-or,
  .data-flow > b { justify-self: center; transform: rotate(90deg); }
  .break-even { grid-template-columns: 1fr; }
  .break-even span:last-child { text-align: right; }
}

@media (max-width: 700px) {
  .site-nav { min-width: 0; max-width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .nav-cta,
  .button-link { transition: none; }
}