:root {
  --paper: #fbfaf6;
  --paper-soft: #ffffff;
  --white: #ffffff;
  --ink: #18312c;
  --muted: #6d7974;
  --green: #0f5b4f;
  --green-deep: #0b4a41;
  --green-soft: #edf5f1;
  --gold: #c89a39;
  --gold-soft: #f2e7cd;
  --line: #e4e1d8;
  --line-dark: rgba(255,255,255,.16);
  --content: 1220px;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .12;
  background-image:
    linear-gradient(rgba(18,63,56,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18,63,56,.018) 1px, transparent 1px);
  background-size: 48px 48px;
}

img { max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(var(--content), calc(100% - 56px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,252,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
}
.brand-logo-wrap {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 50%;
  background: #eaf5f1;
  border: 1px solid rgba(15,91,79,.16);
  box-shadow: 0 4px 14px rgba(15,91,79,.08);
  flex: 0 0 auto;
}
.brand-logo {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border-radius: 50%;
}
.brand-copy { display: grid; gap: 1px; }
.brand-copy strong { font-size: 14px; font-weight: 760; letter-spacing: -.01em; }
.brand-copy small { color: var(--muted); font-size: 10px; letter-spacing: .04em; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a,
.nav-share {
  border: 0;
  padding: 0;
  background: none;
  color: #4f5955;
  font-size: 12px;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}
.main-nav a:hover,
.nav-share:hover { color: var(--green); }
.nav-share {
  padding-left: 27px;
  border-left: 1px solid var(--line);
  color: var(--green);
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  z-index: -1;
  background: #f0f7f4;
  border-left: 1px solid rgba(18,63,56,.08);
}
.hero-grid {
  min-height: 820px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(370px, .72fr);
  gap: clamp(54px, 7vw, 105px);
  align-items: center;
  padding: 88px 0 90px;
}
.institution-line {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 27px;
  color: var(--green);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .18em;
}
.institution-line i { width: 38px; height: 1px; background: var(--gold); }
.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(52px, 6.6vw, 86px);
  line-height: .98;
  letter-spacing: -.045em;
  font-weight: 500;
}
.lead {
  max-width: 690px;
  margin: 30px 0 0;
  color: #59635f;
  font-size: clamp(16px, 1.55vw, 19px);
  line-height: 1.72;
}
.invite-card {
  margin-top: 34px;
  max-width: 660px;
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.invite-card > div { display: grid; gap: 2px; }
.invite-label { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.invite-card strong { color: var(--green); font-size: 23px; letter-spacing: .075em; }
.invite-card small { color: var(--muted); font-size: 11px; }
.invite-card button {
  border: 1px solid var(--green);
  padding: 9px 13px;
  background: transparent;
  color: var(--green);
  font-size: 11px;
  font-weight: 760;
  cursor: pointer;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 34px;
}
.button {
  min-height: 48px;
  padding: 0 19px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--green);
  text-decoration: none;
  font-size: 12px;
  font-weight: 720;
}
.button.primary { background: var(--green); color: #fff; }
.button.primary:hover { background: var(--green-deep); }
.button.secondary { background: transparent; color: var(--green); }
.button.secondary:hover { background: rgba(18,63,56,.04); }
.hero-facts {
  max-width: 700px;
  margin: 52px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.hero-facts > div { padding: 17px 18px 17px 0; }
.hero-facts > div + div { padding-left: 18px; border-left: 1px solid var(--line); }
.hero-facts dt { color: var(--green); font-size: 13px; font-weight: 760; }
.hero-facts dd { margin: 4px 0 0; color: var(--muted); font-size: 10px; line-height: 1.45; }

.product-stage {
  position: relative;
  justify-self: center;
  width: min(410px, 100%);
  padding: 23px 0 0;
}
.stage-caption {
  position: absolute;
  left: -36px;
  top: 58px;
  z-index: 4;
  width: 138px;
  padding: 13px 14px;
  background: var(--paper-soft);
  border: 1px solid rgba(18,63,56,.16);
  box-shadow: 0 10px 24px rgba(15,91,79,.06);
}
.stage-caption span { display: block; color: var(--muted); font-size: 8px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.stage-caption strong { display: block; margin-top: 4px; color: var(--green); font-size: 12px; }
.device-frame {
  position: relative;
  width: min(344px, 82vw);
  margin: 0 auto;
  aspect-ratio: 832 / 1792;
  padding: 6px;
  background: #141918;
  border: 1px solid #2b3431;
  border-radius: 40px;
  box-shadow: 0 28px 64px rgba(15,49,43,.16);
}
.device-frame::before {
  content: "";
  position: absolute;
  inset: 2px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 36px;
  pointer-events: none;
}
.device-screen {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 33px;
  background: #fff;
}
.device-screen img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}
.camera-hole {
  position: absolute;
  top: 9px;
  left: 50%;
  z-index: 3;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  transform: translateX(-50%);
  background: #07100d;
  box-shadow: inset 0 0 0 2px #17221f;
}
.device-side-button {
  position: absolute;
  right: -3px;
  width: 3px;
  background: #262d2b;
}
.device-side-button.one { top: 125px; height: 62px; }
.device-side-button.two { top: 218px; height: 48px; }
.stage-note {
  width: min(320px, 90%);
  margin: 22px auto 0;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 11px;
  padding-top: 14px;
  border-top: 1px solid rgba(18,63,56,.18);
}
.stage-note span { color: var(--gold); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.stage-note p { margin: 0; color: #5d6864; font-size: 10px; line-height: 1.55; }

.section-label {
  margin: 0;
  color: var(--green);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .18em;
}
.section-label.light { color: var(--green); }

.manifesto {
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.manifesto-grid {
  padding: 54px 0 58px;
  display: grid;
  grid-template-columns: minmax(210px, .55fr) minmax(0, 1.45fr);
  gap: 70px;
  align-items: start;
}
.manifesto-grid .section-label { padding-top: 9px; }
.manifesto h2 {
  max-width: 900px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 4.2vw, 55px);
  line-height: 1.07;
  letter-spacing: -.035em;
  font-weight: 500;
}
.manifesto p:not(.section-label) {
  max-width: 820px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.capabilities { padding: 112px 0 120px; }
.section-intro {
  max-width: 920px;
  padding-bottom: 54px;
}
.section-intro h2 {
  margin: 17px 0 0;
  font-family: var(--serif);
  font-size: clamp(42px, 5vw, 64px);
  line-height: 1.04;
  letter-spacing: -.04em;
  font-weight: 500;
}
.section-intro > p:last-child {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.capability-table { border-top: 1px solid var(--ink); }
.capability-group {
  display: grid;
  grid-template-columns: minmax(300px,.68fr) minmax(0,1.32fr);
  gap: 54px;
  padding: 45px 0;
  border-bottom: 1px solid var(--line);
}
.capability-heading {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  align-content: start;
}
.capability-heading > span {
  padding-top: 4px;
  color: var(--gold);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
}
.capability-heading h3 { margin: 0; font-size: 20px; letter-spacing: -.018em; }
.capability-heading p { max-width: 330px; margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.capability-rows { border-top: 1px solid var(--line); }
.capability-rows article {
  display: grid;
  grid-template-columns: 38px minmax(180px,.64fr) minmax(0,1.36fr);
  gap: 15px;
  align-items: start;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.capability-rows article:last-child { border-bottom: 0; }
.capability-rows b { padding-top: 3px; color: #929993; font-size: 9px; letter-spacing: .08em; }
.capability-rows h4 { margin: 0; font-size: 14px; font-weight: 760; letter-spacing: -.01em; }
.capability-rows p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.58; }

.principles {
  padding: 86px 0 92px;
  background: #eef5f1;
  color: var(--ink);
}
.principles-head {
  display: grid;
  grid-template-columns: minmax(220px,.52fr) minmax(0,1.48fr);
  gap: 65px;
  align-items: start;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(15,91,79,.16);
}
.principles-head .section-label { padding-top: 8px; }
.principles h2 {
  max-width: 750px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(36px,4.5vw,56px);
  line-height: 1.05;
  font-weight: 500;
  letter-spacing: -.035em;
}
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  border-bottom: 1px solid rgba(15,91,79,.16);
}
.principles-grid article {
  min-height: 220px;
  padding: 31px 28px 32px 0;
}
.principles-grid article + article { padding-left: 28px; border-left: 1px solid rgba(15,91,79,.14); }
.principles-grid span { color: var(--gold); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.principles-grid h3 { margin: 48px 0 0; font-size: 17px; }
.principles-grid p { margin: 10px 0 0; color: var(--muted); font-size: 12px; line-height: 1.62; }

.referral-section {
  padding: 92px 0;
  background: var(--paper-soft);
  border-bottom: 1px solid var(--line);
}
.referral-grid {
  display: grid;
  grid-template-columns: minmax(0,1.32fr) minmax(300px,.68fr);
  gap: 90px;
  align-items: end;
}
.referral-copy h2 {
  max-width: 780px;
  margin: 17px 0 0;
  font-family: var(--serif);
  font-size: clamp(38px,4.8vw,60px);
  line-height: 1.06;
  letter-spacing: -.035em;
  font-weight: 500;
}
.referral-copy > p:last-child { max-width: 730px; margin: 19px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.reward-card {
  padding: 24px 0 3px 30px;
  border-left: 2px solid var(--gold);
}
.reward-card > span { color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .14em; }
.reward-card strong { display: block; margin-top: 10px; color: var(--green); font-family: var(--serif); font-size: 42px; font-weight: 500; letter-spacing: -.03em; }
.reward-card p { margin: 2px 0 0; color: var(--ink); font-size: 12px; font-weight: 700; }
.reward-card small { display: block; margin-top: 19px; color: var(--muted); font-size: 10px; line-height: 1.55; }

.download-section {
  background: #f4f0e5;
  color: var(--ink);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.download-grid {
  min-height: 430px;
  padding: 76px 0;
  display: grid;
  grid-template-columns: minmax(0,1.18fr) minmax(350px,.82fr);
  gap: 92px;
  align-items: center;
}
.download-copy h2 {
  max-width: 760px;
  margin: 17px 0 0;
  font-family: var(--serif);
  font-size: clamp(40px,5vw,62px);
  line-height: 1.04;
  letter-spacing: -.035em;
  font-weight: 500;
}
.download-copy > p:last-child { max-width: 660px; margin: 20px 0 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.store-zone { display: grid; gap: 9px; }
.store-button {
  min-height: 72px;
  padding: 12px 15px;
  display: grid;
  grid-template-columns: 38px 1fr 24px;
  align-items: center;
  gap: 13px;
  background: #ffffff;
  border: 1px solid #ddd8ca;
  color: #101512;
  text-decoration: none;
}
.store-button.disabled { opacity: .56; cursor: default; }
.store-button:not(.disabled):hover { background: #f2f1ed; }
.store-mark { width: 35px; height: 35px; display: grid; place-items: center; }
.store-mark.apple { font-size: 27px; }
.store-mark.play::before {
  content: "";
  width: 0;
  height: 0;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  border-left: 20px solid #121815;
  transform: translateX(2px);
}
.store-button small { display: block; color: #666d69; font-size: 9px; }
.store-button strong { display: block; margin-top: 1px; font-size: 16px; }
.store-button i { color: #737a76; font-size: 13px; font-style: normal; }
.store-button.recommended { outline: 2px solid var(--gold); outline-offset: 3px; }
.store-note { margin: 8px 0 0; color: #78827d; font-size: 10px; line-height: 1.5; }

footer { background: #ffffff; color: var(--ink); border-top: 1px solid var(--line); }
.footer-grid {
  min-height: 126px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-logo-wrap { box-shadow: none; }
.footer-brand > div { display: grid; gap: 3px; }
.footer-brand strong { font-size: 13px; }
.footer-brand span { color: #78827d; font-size: 10px; }
.footer-meta { display: flex; align-items: center; gap: 24px; }
.footer-meta a, .footer-meta span { color: var(--muted); font-size: 10px; text-decoration: none; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 80;
  transform: translate(-50%, 18px);
  padding: 10px 14px;
  background: #101613;
  color: #fff;
  font-size: 11px;
  opacity: 0;
  pointer-events: none;
  transition: .2s ease;
  box-shadow: 0 12px 32px rgba(0,0,0,.18);
}
.toast.show { opacity: 1; transform: translate(-50%,0); }

@media (max-width: 980px) {
  .main-nav a { display: none; }
  .hero::after { width: 44%; }
  .hero-grid { grid-template-columns: minmax(0,1fr) minmax(310px,.68fr); gap: 42px; min-height: 740px; }
  .hero h1 { font-size: clamp(48px,7vw,70px); }
  .manifesto-grid,
  .principles-head { grid-template-columns: 180px 1fr; gap: 42px; }
  .capability-group { grid-template-columns: 250px 1fr; gap: 35px; }
  .capability-rows article { grid-template-columns: 34px 170px 1fr; }
  .download-grid { gap: 52px; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 34px, var(--content)); }
  .site-header { position: relative; }
  .header-inner { min-height: 70px; }
  .brand-copy small { display: none; }
  .main-nav { gap: 0; }
  .nav-share { padding-left: 16px; border-left: 0; }

  .hero::after { display: none; }
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 58px;
    padding: 58px 0 70px;
  }
  .institution-line { margin-bottom: 21px; }
  .hero h1 { font-size: clamp(46px,14vw,66px); }
  .lead { font-size: 16px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts > div { padding: 13px 0; }
  .hero-facts > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .product-stage { width: 100%; max-width: 400px; }
  .stage-caption { left: 0; top: 40px; width: 126px; }
  .device-frame { width: min(320px, 78vw); }

  .manifesto-grid { grid-template-columns: 1fr; gap: 18px; padding: 42px 0 46px; }
  .manifesto-grid .section-label { padding-top: 0; }
  .manifesto h2 { font-size: 38px; }

  .capabilities { padding: 80px 0 86px; }
  .section-intro { padding-bottom: 38px; }
  .section-intro h2 { font-size: 42px; }
  .capability-group { grid-template-columns: 1fr; gap: 28px; padding: 34px 0; }
  .capability-rows article { grid-template-columns: 31px 1fr; gap: 12px; padding: 16px 0; }
  .capability-rows article p { grid-column: 2; margin-top: 3px; }

  .principles { padding: 68px 0 72px; }
  .principles-head { grid-template-columns: 1fr; gap: 18px; padding-bottom: 30px; }
  .principles h2 { font-size: 39px; }
  .principles-grid { grid-template-columns: 1fr; }
  .principles-grid article { min-height: 0; padding: 28px 0; }
  .principles-grid article + article { padding-left: 0; border-left: 0; border-top: 1px solid rgba(15,91,79,.14); }
  .principles-grid h3 { margin-top: 26px; }

  .referral-section { padding: 72px 0; }
  .referral-grid { grid-template-columns: 1fr; gap: 44px; }
  .referral-copy h2 { font-size: 41px; }
  .reward-card { padding-left: 21px; }

  .download-grid { grid-template-columns: 1fr; gap: 40px; min-height: 0; padding: 68px 0; }
  .download-copy h2 { font-size: 42px; }

  .footer-grid { padding: 27px 0; align-items: flex-start; flex-direction: column; }
  .footer-meta { width: 100%; justify-content: space-between; }
}

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

/* V6 — palette institutionnelle plus lumineuse */
.site-header { box-shadow: 0 1px 0 rgba(15,91,79,.03); }
.hero { background: #fffdf9; }
.hero::after { background: #edf7f3; }
.manifesto { background: #ffffff; }
.capabilities { background: #fbfaf6; }
.referral-section { background: #ffffff; }
.principles { background: #f1f7f4; }
.principles-head, .principles-grid { border-color: rgba(15,91,79,.14); }
.principles-grid article + article { border-color: rgba(15,91,79,.14); }
.download-section { background: #f7f2e7; }
.footer-grid { min-height: 112px; }
.brand-logo-wrap { width: 48px; height: 48px; background: #eaf6f1; }
@media (max-width: 760px) {
  .brand-logo-wrap { width: 43px; height: 43px; }
}

/* V7 — optimisation mobile de precision */
@media (max-width: 760px) {
  html, body { max-width: 100%; overflow-x: hidden; }
  body::before { display: none; }
  .shell { width: calc(100% - 32px); max-width: 100%; }

  .site-header {
    position: sticky;
    top: 0;
    background: rgba(255,255,252,.985);
    backdrop-filter: blur(10px);
  }
  .header-inner { min-height: 64px; gap: 12px; }
  .brand { min-width: 0; gap: 10px; }
  .brand-logo-wrap { width: 38px; height: 38px; }
  .brand-copy { min-width: 0; }
  .brand-copy strong { font-size: 13px; white-space: nowrap; }
  .brand-copy small { display: none; }
  .main-nav { margin-left: auto; }
  .main-nav a { display: none; }
  .nav-share {
    padding: 9px 12px;
    border: 1px solid rgba(15,91,79,.2);
    color: var(--green);
    font-size: 11px;
    line-height: 1;
  }

  .hero { background: #fffdf9; }
  .hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 46px;
    min-height: 0;
    padding: 38px 0 54px;
  }
  .hero-copy { min-width: 0; }
  .institution-line {
    gap: 9px;
    margin-bottom: 18px;
    font-size: 8px;
    letter-spacing: .14em;
    white-space: nowrap;
  }
  .institution-line i { width: 26px; flex: 0 0 26px; }
  .hero h1 {
    width: 100%;
    max-width: 100%;
    font-size: clamp(39px, 11.3vw, 46px);
    line-height: 1.01;
    letter-spacing: -.038em;
    overflow-wrap: normal;
    word-break: normal;
  }
  .lead {
    margin-top: 23px;
    font-size: 15px;
    line-height: 1.68;
  }

  .invite-card {
    width: 100%;
    max-width: 100%;
    margin-top: 28px;
    padding: 18px 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
    align-items: start;
  }
  .invite-card > div { min-width: 0; gap: 3px; }
  .invite-label { font-size: 9px; letter-spacing: .13em; }
  .invite-card strong {
    font-size: 22px;
    line-height: 1.2;
    letter-spacing: .065em;
    overflow-wrap: anywhere;
  }
  .invite-card small { font-size: 10.5px; line-height: 1.45; }
  .invite-card button {
    width: 100%;
    min-height: 44px;
    padding: 0 14px;
    font-size: 11px;
    background: #fff;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: 9px;
    margin-top: 26px;
  }
  .button { min-height: 49px; width: 100%; font-size: 11.5px; }

  .hero-facts {
    width: 100%;
    margin-top: 32px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .hero-facts > div { min-width: 0; padding: 15px 8px 15px 0; }
  .hero-facts > div + div {
    padding-left: 10px;
    border-left: 1px solid var(--line);
    border-top: 0;
  }
  .hero-facts dt { font-size: 11px; line-height: 1.25; }
  .hero-facts dd { font-size: 8.5px; line-height: 1.35; }

  .product-stage {
    width: 100%;
    max-width: 100%;
    padding-top: 0;
  }
  .stage-caption {
    position: static;
    width: fit-content;
    margin: 0 0 16px;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }
  .stage-caption span { font-size: 8px; }
  .stage-caption strong { font-size: 11px; }
  .device-frame { width: min(276px, 76vw); border-radius: 34px; }
  .device-frame::before { border-radius: 31px; }
  .device-screen { border-radius: 28px; }
  .stage-note { width: min(300px, 88%); margin-top: 18px; }

  .manifesto-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 40px 0 44px;
  }
  .manifesto h2 { font-size: 34px; line-height: 1.06; }
  .manifesto p:not(.section-label) { margin-top: 15px; font-size: 13px; }

  .capabilities { padding: 68px 0 74px; }
  .section-intro { padding-bottom: 30px; }
  .section-intro h2 { margin-top: 12px; font-size: 35px; line-height: 1.05; }
  .section-intro > p:last-child { margin-top: 15px; font-size: 13px; }
  .capability-group { gap: 22px; padding: 30px 0; }
  .capability-heading { grid-template-columns: 28px 1fr; gap: 10px; }
  .capability-heading h3 { font-size: 18px; }
  .capability-heading p { font-size: 11.5px; }
  .capability-rows article {
    grid-template-columns: 26px 1fr;
    gap: 10px;
    padding: 15px 0;
  }
  .capability-rows h4 { font-size: 13.5px; }
  .capability-rows p { grid-column: 2; font-size: 11.5px; }

  .principles { padding: 58px 0 62px; }
  .principles-head { grid-template-columns: 1fr; gap: 12px; padding-bottom: 24px; }
  .principles h2 { font-size: 34px; }
  .principles-grid { grid-template-columns: 1fr; }
  .principles-grid article { min-height: 0; padding: 23px 0; }
  .principles-grid article + article { padding-left: 0; border-left: 0; border-top: 1px solid rgba(15,91,79,.14); }
  .principles-grid h3 { margin-top: 19px; font-size: 16px; }
  .principles-grid p { font-size: 11.5px; }

  .referral-section { padding: 60px 0; }
  .referral-grid { grid-template-columns: 1fr; gap: 30px; }
  .referral-copy h2 { margin-top: 12px; font-size: 35px; line-height: 1.06; }
  .referral-copy > p:last-child { font-size: 12.5px; }
  .reward-card { padding: 18px 0 0 18px; }
  .reward-card strong { font-size: 36px; }

  .download-grid { grid-template-columns: 1fr; gap: 28px; min-height: 0; padding: 58px 0; }
  .download-copy h2 { margin-top: 12px; font-size: 35px; }
  .download-copy > p:last-child { font-size: 12.5px; }
  .store-button { min-height: 68px; grid-template-columns: 34px 1fr 20px; }
  .store-button strong { font-size: 15px; }

  .footer-grid { min-height: 0; padding: 24px 0; align-items: flex-start; flex-direction: column; }
  .footer-meta { width: 100%; gap: 14px; flex-wrap: wrap; justify-content: flex-start; }
}

@media (max-width: 390px) {
  .shell { width: calc(100% - 28px); }
  .brand-copy strong { font-size: 12px; }
  .nav-share { padding: 8px 10px; font-size: 10.5px; }
  .institution-line { font-size: 7.5px; gap: 7px; letter-spacing: .11em; }
  .institution-line i { width: 20px; flex-basis: 20px; }
  .hero h1 { font-size: 39px; }
  .lead { font-size: 14.5px; }
  .hero-facts dt { font-size: 10px; }
  .hero-facts dd { font-size: 8px; }
  .device-frame { width: min(260px, 78vw); }
  .manifesto h2,
  .section-intro h2,
  .principles h2,
  .referral-copy h2,
  .download-copy h2 { font-size: 32px; }
}