:root {
  --ink: #0b1530;
  --ink-soft: #34415f;
  --blue: #3157ff;
  --blue-deep: #2443dc;
  --aqua: #92f0cf;
  --aqua-dark: #126b58;
  --paper: #f5f7fb;
  --white: #ffffff;
  --line: #dce2ec;
  --muted: #65708a;
  --radius: 24px;
  --shadow: 0 24px 80px rgba(13, 30, 73, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.shell { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 100;
  padding: 12px 16px; border-radius: 10px; background: var(--white); color: var(--ink);
}
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(245, 247, 251, 0.86);
  border-bottom: 1px solid rgba(220, 226, 236, 0.8);
  backdrop-filter: blur(18px);
}
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 38px; aspect-ratio: 1; border-radius: 12px;
  color: var(--white); background: var(--ink); font-weight: 800; letter-spacing: -0.06em;
}
.brand-copy { display: flex; flex-direction: column; line-height: 1.05; }
.brand-copy strong { font-size: 17px; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: 12px; }
.desktop-nav { display: flex; gap: 30px; margin-left: auto; }
.desktop-nav a { color: var(--ink-soft); font-size: 14px; font-weight: 650; text-decoration: none; }
.desktop-nav a:hover { color: var(--blue); }

.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px;
  border: 1px solid transparent; border-radius: 15px; font-weight: 750; text-decoration: none; cursor: pointer;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button:focus-visible, .text-link:focus-visible, summary:focus-visible, .reason-button:focus-visible, .text-button:focus-visible {
  outline: 3px solid rgba(49, 87, 255, .28); outline-offset: 3px;
}
.button-primary { color: var(--white); background: var(--blue); box-shadow: 0 12px 26px rgba(49, 87, 255, .25); }
.button-primary:hover { background: var(--blue-deep); }
.button-small { min-height: 42px; padding-inline: 18px; font-size: 14px; }
.button-ghost { border-color: var(--line); background: rgba(255,255,255,.7); }
.button-full { width: 100%; }

.hero { position: relative; overflow: hidden; padding: 94px 0 112px; }
.hero::before {
  content: ""; position: absolute; width: 520px; height: 520px; left: -260px; top: 100px;
  background: radial-gradient(circle, rgba(49,87,255,.11), transparent 68%); pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(430px, .98fr); align-items: center; gap: 74px; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.eyebrow span { width: 26px; height: 2px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 26px; font-size: clamp(48px, 6.1vw, 82px); line-height: .98; letter-spacing: -.055em; }
h1 em { color: var(--blue); font-style: normal; }
.hero-lead { max-width: 690px; margin-bottom: 30px; color: var(--ink-soft); font-size: clamp(19px, 2vw, 23px); line-height: 1.45; }
.hero-actions { display: flex; align-items: center; gap: 24px; }
.text-link { color: var(--ink); font-weight: 750; text-decoration: none; }
.text-link span { color: var(--blue); margin-left: 4px; }
.hero-note { max-width: 610px; margin: 20px 0 28px; color: var(--muted); font-size: 14px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px 20px; color: var(--ink-soft); font-size: 13px; font-weight: 650; }
.trust-row span { display: flex; align-items: center; gap: 8px; }
.trust-row span::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--aqua-dark); }

.diagnostic-stage { position: relative; min-height: 570px; display: grid; place-items: center; }
.stage-glow { position: absolute; inset: 8% 2%; border-radius: 50%; background: radial-gradient(circle, rgba(49,87,255,.22), transparent 67%); filter: blur(10px); }
.sample-card {
  position: relative; z-index: 2; width: min(100%, 510px); padding: 25px;
  border: 1px solid rgba(255,255,255,.9); border-radius: 30px; background: rgba(255,255,255,.94);
  box-shadow: var(--shadow); transform: rotate(1.1deg);
}
.sample-topline, .sample-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.sample-label { color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.sample-progress { color: var(--muted); font-size: 13px; }
.subject-line { display: flex; align-items: center; gap: 14px; margin: 24px 0; }
.subject-line small { display: block; color: var(--muted); }
.subject-line strong { display: block; margin-top: 2px; font-size: 18px; }
.subject-icon { display: grid; place-items: center; width: 52px; height: 52px; flex: 0 0 auto; border-radius: 17px; background: var(--ink); color: var(--aqua); font-weight: 900; }
.sample-question { padding: 19px; border-radius: 18px; background: var(--paper); font-size: 17px; font-weight: 650; }
.error-token { padding: 1px 4px; border-radius: 5px; background: #ffe1df; color: #be2d27; }
.reason-tabs { display: grid; gap: 9px; margin: 18px 0; }
.reason-button { padding: 13px 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--white); color: var(--ink-soft); text-align: left; cursor: pointer; }
.reason-button:hover { border-color: #b6c2ff; }
.reason-button.is-active { border-color: var(--blue); background: #f0f3ff; color: var(--blue); font-weight: 750; }
.diagnostic-result { padding: 18px; border-radius: 18px; background: var(--ink); color: var(--white); }
.result-kicker { display: block; margin-bottom: 7px; color: var(--aqua); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.diagnostic-result strong { display: block; line-height: 1.3; }
.diagnostic-result p { margin: 7px 0 0; color: #bcc7e4; font-size: 13px; }
.sample-footer { margin-top: 17px; color: var(--muted); font-size: 12px; }
.sample-footer span:first-child { display: flex; align-items: center; gap: 7px; }
.sample-footer i { width: 7px; height: 7px; border-radius: 50%; background: #f8a23a; }
.floating-card { position: absolute; z-index: 4; min-width: 150px; padding: 15px 17px; border: 1px solid rgba(255,255,255,.8); border-radius: 17px; background: rgba(255,255,255,.88); box-shadow: 0 14px 38px rgba(13,30,73,.14); backdrop-filter: blur(12px); }
.floating-card span { display: block; color: var(--muted); font-size: 12px; }
.floating-card strong { display: block; margin-top: 3px; font-size: 14px; }
.floating-one { right: -22px; top: 38px; }
.floating-two { left: -34px; bottom: 48px; }

.roles-section { padding: 38px 0 112px; }
.roles-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end; margin-bottom: 42px; }
.roles-heading > p { max-width: 470px; margin: 0 0 4px; color: var(--muted); font-size: 19px; }
.role-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.role-card { min-height: 430px; padding: 28px; border: 1px solid var(--line); border-radius: 26px; background: var(--white); display: flex; flex-direction: column; }
.role-card.student-role { color: var(--white); border-color: transparent; background: linear-gradient(145deg, #17306f, #3157ff); }
.role-card.teacher-role { background: #f7f8fd; }
.role-card.school-role { background: #edfcf6; }
.role-kicker { color: var(--blue); font-size: 12px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.student-role .role-kicker { color: var(--aqua); }
.role-card h3 { margin: 50px 0 13px; font-size: clamp(25px, 2.4vw, 34px); line-height: 1.04; letter-spacing: -.04em; }
.role-card p { margin: 0; color: var(--muted); }
.student-role p { color: #d9e2fb; }
.role-card ul { display: grid; gap: 8px; margin: 26px 0 28px; padding: 0; list-style: none; color: var(--ink-soft); font-size: 14px; font-weight: 650; }
.student-role ul { color: #d9e2fb; }
.role-card li { display: flex; gap: 9px; align-items: start; }
.role-card li::before { content: "✓"; color: var(--aqua-dark); font-weight: 900; }
.student-role li::before { color: var(--aqua); }
.role-card-link { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: auto; padding-top: 17px; border-top: 1px solid var(--line); color: var(--blue); font-weight: 850; text-decoration: none; }
.student-role .role-card-link { border-color: rgba(255,255,255,.25); color: var(--aqua); }
.role-card-link:hover span { transform: translateX(3px); }

.problem-section, .beta-section, .principle-section, .faq-section { padding: 112px 0; }
.split-heading, .section-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end; margin-bottom: 54px; }
.section-number { margin-bottom: 20px; color: var(--blue); font-size: 13px; font-weight: 850; letter-spacing: .14em; }
h2 { margin-bottom: 0; font-size: clamp(38px, 5vw, 62px); line-height: 1.02; letter-spacing: -.045em; }
.split-heading > p, .section-heading > p { margin-bottom: 4px; color: var(--muted); font-size: 19px; }
.reason-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.reason-card { min-height: 225px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.reason-card h3 { margin: 55px 0 10px; font-size: 20px; }
.reason-card p { margin-bottom: 0; color: var(--muted); }
.reason-index { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; background: var(--paper); font-size: 13px; font-weight: 850; }
.accent-card { background: var(--aqua); border-color: transparent; transform: translateY(-14px); }
.accent-card p { color: #25584d; }
.accent-card .reason-index { background: rgba(255,255,255,.72); }

.process-section { padding: 112px 0; color: var(--white); background: var(--ink); }
.light-heading .section-number { color: var(--aqua); }
.light-heading > p { color: #aeb9d4; }
.process-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid #2a3654; }
.process-list li { display: grid; grid-template-columns: 100px 1fr; gap: 18px; padding: 25px 0; border-bottom: 1px solid #2a3654; }
.process-list li > div { display: grid; grid-template-columns: .8fr 1.2fr; gap: 36px; align-items: baseline; }
.step-number { color: var(--aqua); font-size: 13px; font-weight: 800; }
.process-list h3 { margin: 0; font-size: 25px; }
.process-list p { margin: 0; color: #aeb9d4; font-size: 17px; }

.beta-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; align-items: start; }
.beta-intro > p { margin: 26px 0; color: var(--muted); font-size: 19px; }
.beta-badge { display: inline-flex; align-items: center; gap: 9px; padding: 10px 14px; border-radius: 999px; background: #e8fff7; color: var(--aqua-dark); font-size: 13px; font-weight: 750; }
.beta-badge span { width: 8px; height: 8px; border-radius: 50%; background: #1c9b77; }
.beta-list { border-top: 1px solid var(--line); }
.beta-row { display: grid; grid-template-columns: 160px 1fr; gap: 24px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.beta-row strong { color: var(--blue); }
.beta-row span { color: var(--ink-soft); font-size: 17px; }

.principle-section { padding-top: 60px; }
.principle-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: center; }
.principle-visual { position: relative; min-height: 430px; display: grid; place-items: center; overflow: hidden; border-radius: 38px; background: #eaf0ff; }
.orbit { position: absolute; border: 1px solid rgba(49,87,255,.23); border-radius: 50%; }
.orbit-one { width: 270px; height: 270px; }
.orbit-two { width: 410px; height: 410px; }
.core-mark { display: grid; place-items: center; width: 128px; height: 128px; border-radius: 38px; background: var(--blue); color: var(--white); font-size: 36px; font-weight: 900; box-shadow: 0 24px 46px rgba(49,87,255,.28); }
.human-mark { position: absolute; right: 28px; bottom: 30px; padding: 17px; border-radius: 16px; background: var(--aqua); font-size: 14px; font-weight: 800; line-height: 1.25; transform: rotate(-3deg); }
.principle-copy p { margin: 28px 0; color: var(--muted); font-size: 19px; }
.principle-copy ul { list-style: none; margin: 0; padding: 0; }
.principle-copy li { position: relative; padding: 15px 0 15px 34px; border-bottom: 1px solid var(--line); font-weight: 650; }
.principle-copy li::before { content: "✓"; position: absolute; left: 0; color: var(--aqua-dark); font-weight: 900; }

.waitlist-section { padding: 112px 0; color: var(--white); background: linear-gradient(135deg, #17306f, #294fd9 72%, #3157ff); }
.waitlist-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 90px; align-items: start; }
.eyebrow-light { color: var(--aqua); }
.waitlist-copy h2 { margin: 18px 0 26px; }
.waitlist-copy > p { max-width: 570px; color: #c8d3ef; font-size: 18px; }
.waitlist-points { display: grid; gap: 12px; margin-top: 34px; }
.waitlist-points span { position: relative; padding-left: 26px; color: #eef3ff; }
.waitlist-points span::before { content: ""; position: absolute; left: 0; top: .55em; width: 9px; height: 9px; border-radius: 50%; background: var(--aqua); }
.waitlist-form { min-height: 560px; padding: 30px; border-radius: 28px; background: var(--white); color: var(--ink); box-shadow: 0 30px 90px rgba(7,20,60,.25); }
.demo-mode-badge { display: flex; align-items: center; gap: 9px; margin-bottom: 22px; color: var(--aqua-dark); font-size: 12px; font-weight: 800; letter-spacing: .03em; }
.demo-mode-badge span { width: 8px; height: 8px; border-radius: 50%; background: var(--aqua-dark); box-shadow: 0 0 0 5px rgba(44, 183, 143, .12); }
.field-row { display: grid; grid-template-columns: 1.4fr .6fr; gap: 14px; }
.waitlist-form label, .waitlist-form legend { color: var(--ink-soft); font-size: 14px; font-weight: 750; }
.waitlist-form input:not([type="checkbox"]), .waitlist-form select {
  width: 100%; min-height: 52px; margin-top: 8px; padding: 0 14px; border: 1px solid var(--line); border-radius: 13px; background: var(--white); color: var(--ink); outline: none;
}
.waitlist-form input:focus, .waitlist-form select:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(49,87,255,.11); }
.waitlist-form fieldset { margin: 22px 0; padding: 0; border: 0; }
.subject-options { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 10px; }
.subject-options label { position: relative; padding: 10px 13px; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; }
.subject-options label:has(input:checked) { border-color: var(--blue); background: #eef1ff; color: var(--blue); }
.subject-options input { position: absolute; opacity: 0; pointer-events: none; }
.consent-line { display: grid; grid-template-columns: 18px 1fr; gap: 10px; align-items: start; margin: 22px 0 4px; line-height: 1.4; }
.consent-line input { width: 17px; height: 17px; margin: 2px 0 0; accent-color: var(--blue); }
.form-error { min-height: 22px; margin: 8px 0; color: #b42318; font-size: 13px; }
.form-footnote { margin: 13px 0 0; color: var(--muted); font-size: 12px; text-align: center; }
.success-state { min-height: 500px; place-content: center; text-align: center; }
.success-state:not([hidden]) { display: grid; }
.success-icon { display: grid; place-items: center; width: 58px; height: 58px; margin: 0 auto 20px; border-radius: 18px; background: var(--aqua); color: var(--aqua-dark); font-size: 26px; font-weight: 900; }
.success-state h3 { margin-bottom: 10px; font-size: 28px; }
.success-state p { max-width: 360px; margin: 0 auto 20px; color: var(--muted); }
.demo-receipt { max-width: 410px; margin: 0 auto 22px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--paper); color: var(--ink-soft); font-size: 12px; font-weight: 700; overflow-wrap: anywhere; }
.text-button { border: 0; background: transparent; color: var(--blue); font-weight: 800; cursor: pointer; }

.faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 100px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; justify-content: space-between; gap: 20px; padding: 25px 0; list-style: none; font-size: 18px; font-weight: 750; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--blue); font-size: 26px; font-weight: 400; transition: transform .2s ease; }
details[open] summary span { transform: rotate(45deg); }
details p { max-width: 680px; margin: -4px 0 25px; color: var(--muted); }

.site-footer { padding: 44px 0; color: #b6c0d8; background: #070f24; }
.footer-inner { display: grid; grid-template-columns: auto 1fr auto; gap: 40px; align-items: center; }
.footer-brand .brand-mark { background: var(--white); color: var(--ink); }
.footer-brand .brand-copy small { color: #8793ae; }
.footer-inner p { max-width: 610px; margin: 0; font-size: 13px; }
.footer-links { display: grid; gap: 6px; color: #d6deef; font-size: 12px; text-align: right; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--aqua); }

.audience-hero { position: relative; overflow: hidden; padding: 94px 0 104px; }
.audience-hero::after { content: ""; position: absolute; right: -180px; top: -220px; width: 640px; height: 640px; border-radius: 50%; background: radial-gradient(circle, rgba(49,87,255,.16), transparent 68%); pointer-events: none; }
.audience-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.08fr .92fr; gap: 78px; align-items: center; }
.audience-grid h1 { margin: 22px 0 26px; font-size: clamp(48px, 5.6vw, 76px); }
.audience-trust { margin-top: 30px; }
.audience-panel { min-height: 520px; padding: 34px; border-radius: 34px; color: var(--white); background: var(--ink); box-shadow: var(--shadow); transform: rotate(1deg); }
.audience-panel h2 { margin-top: 44px; font-size: clamp(34px, 4vw, 52px); }
.panel-label { color: var(--aqua); font-size: 12px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.panel-count { display: grid; place-items: center; width: 76px; height: 76px; margin-top: 44px; border-radius: 24px; background: var(--blue); font-size: 28px; font-weight: 900; }
.panel-lines { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-top: 42px; }
.panel-lines span { padding: 12px 13px; border: 1px solid #31405f; border-radius: 13px; color: #dce5fb; font-size: 13px; }
.school-panel { display: flex; flex-direction: column; justify-content: space-between; background: linear-gradient(145deg, #17306f, #3157ff); }
.school-panel > p { margin: 36px 0 0; color: #d9e2fb; font-size: 18px; }
.signal-list { display: grid; gap: 10px; margin-top: 46px; }
.signal-list div { display: grid; grid-template-columns: 110px 1fr; align-items: baseline; padding: 17px 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.signal-list b { color: var(--aqua); font-size: 42px; line-height: 1; }
.signal-list span { color: #eef3ff; font-weight: 700; }
.evidence-board { display: grid; grid-template-columns: .85fr 1.15fr; gap: 16px; }
.evidence-question { min-height: 390px; padding: 34px; border-radius: 30px; color: var(--white); background: var(--blue); }
.evidence-question small { color: #cfdaff; font-weight: 750; }
.evidence-question strong { display: block; margin-top: 64px; font-size: 29px; line-height: 1.25; }
.evidence-question p { margin: 22px 0 0; color: #dbe3ff; }
.evidence-path { list-style: none; display: grid; gap: 10px; margin: 0; padding: 0; }
.evidence-path li { display: grid; grid-template-columns: 50px 1fr; gap: 18px; align-items: start; padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: var(--white); }
.evidence-path li > span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 14px; background: #eef1ff; color: var(--blue); font-weight: 850; }
.evidence-path strong { font-size: 19px; }
.evidence-path p { margin: 5px 0 0; color: var(--muted); }
.review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.review-grid article { min-height: 255px; padding: 25px; border: 1px solid #2a3654; border-radius: 24px; background: #101c3a; }
.review-grid article > span { color: var(--aqua); font-size: 13px; font-weight: 850; }
.review-grid h3 { margin: 64px 0 11px; font-size: 21px; }
.review-grid p { margin: 0; color: #aeb9d4; }
.school-benefits .accent-card { background: #b0f4dc; }
.compact-process li > div { grid-template-columns: .8fr 1.2fr; }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .hero { padding-top: 68px; }
  .hero-grid, .beta-grid, .principle-grid, .waitlist-grid { grid-template-columns: 1fr; gap: 58px; }
  .roles-heading { grid-template-columns: 1fr; gap: 24px; }
  .role-card-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 760px; }
  .diagnostic-stage { min-height: 540px; }
  .reason-grid { grid-template-columns: repeat(2, 1fr); }
  .accent-card { transform: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-auto-flow: column; justify-content: start; text-align: left; }
  .audience-grid { grid-template-columns: 1fr; gap: 54px; }
  .audience-panel { min-height: 450px; transform: none; }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 32px, 1180px); }
  .site-header .button-small { display: none; }
  .header-inner { min-height: 68px; }
  .hero { padding: 58px 0 78px; }
  h1 { font-size: clamp(43px, 13vw, 64px); }
  h2 { font-size: clamp(34px, 10vw, 48px); }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 18px; }
  .hero-actions .button { width: 100%; }
  .text-link { text-align: center; }
  .diagnostic-stage { min-height: auto; display: block; }
  .sample-card { transform: none; padding: 20px; }
  .floating-card { display: none; }
  .sample-footer { align-items: flex-start; flex-direction: column; }
  .problem-section, .beta-section, .principle-section, .faq-section, .process-section, .waitlist-section, .roles-section { padding: 78px 0; }
  .split-heading, .section-heading, .faq-grid { grid-template-columns: 1fr; gap: 24px; margin-bottom: 38px; }
  .reason-grid { grid-template-columns: 1fr; }
  .reason-card { min-height: auto; }
  .reason-card h3 { margin-top: 32px; }
  .process-list li { grid-template-columns: 44px 1fr; }
  .process-list li > div { grid-template-columns: 1fr; gap: 8px; }
  .beta-row { grid-template-columns: 1fr; gap: 6px; }
  .principle-visual { min-height: 340px; }
  .orbit-two { width: 330px; height: 330px; }
  .waitlist-form { min-height: 0; padding: 22px; }
  .field-row { grid-template-columns: 1fr; }
  .footer-links { grid-auto-flow: row; }
  .audience-hero { padding: 58px 0 78px; }
  .audience-panel { min-height: auto; padding: 25px; }
  .panel-lines { grid-template-columns: 1fr; }
  .evidence-board, .review-grid { grid-template-columns: 1fr; }
  .evidence-question { min-height: 320px; }
  .review-grid article { min-height: auto; }
  .review-grid h3 { margin-top: 34px; }
  .signal-list div { grid-template-columns: 86px 1fr; }
}

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