:root {
  --bg: #06111c;
  --bg-deep: #030912;
  --surface: #0b1825;
  --surface-2: #0e2131;
  --surface-soft: rgba(255,255,255,.045);
  --line: rgba(255,255,255,.11);
  --text: #f4f1e9;
  --muted: #aeb9c4;
  --blue: #2f559c;
  --teal: #55d8ce;
  --teal-soft: rgba(85,216,206,.13);
  --gold: #f4bd3e;
  --gold-soft: rgba(244,189,62,.13);
  --shadow: 0 30px 80px rgba(0,0,0,.35);
  --radius: 26px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; }

.skip-link {
  position: fixed;
  left: 14px;
  top: 14px;
  transform: translateY(-150%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 14px;
  border-radius: 10px;
  z-index: 100;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }

.container {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  padding: 24px 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  letter-spacing: .15em;
  font-size: .88rem;
  font-weight: 700;
}
.brand-mark-wrap {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,.12);
}
.brand-mark {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.status-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  color: #d6e0e8;
  border: 1px solid var(--line);
  background: rgba(5,14,24,.55);
  backdrop-filter: blur(12px);
  border-radius: 999px;
  padding: 8px 13px;
  font-size: .78rem;
  font-weight: 650;
  letter-spacing: .02em;
}
.status-dot, .status-card-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 5px rgba(85,216,206,.11);
  flex: 0 0 auto;
}

.hero {
  position: relative;
  min-height: 790px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 45%, rgba(31,103,127,.18), transparent 25%),
    radial-gradient(circle at 74% 63%, rgba(244,189,62,.10), transparent 22%),
    linear-gradient(180deg, #030912 0%, #071521 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(85,216,206,.35), rgba(244,189,62,.25), transparent);
}
.hero-grid {
  min-height: 790px;
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 60px;
  padding-top: 110px;
}
.hero-copy { position: relative; z-index: 2; max-width: 710px; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .72rem;
  font-weight: 760;
}
.hero h1 {
  margin: 0;
  line-height: .88;
  letter-spacing: -.058em;
  font-size: clamp(4.6rem, 9.4vw, 8.9rem);
  font-weight: 700;
}
.hero h1 span, .hero h1 strong { display: block; }
.hero h1 span { color: var(--text); font-weight: 660; }
.hero h1 strong { color: var(--gold); font-weight: 760; }
.hero-deck {
  margin: 34px 0 0;
  font-size: clamp(1.25rem, 2.1vw, 1.7rem);
  line-height: 1.4;
  max-width: 650px;
  color: #eef3f5;
}
.hero-intro { max-width: 690px; margin: 20px 0 0; color: var(--muted); font-size: 1.02rem; }
.status-card {
  margin-top: 34px;
  display: inline-flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 19px;
  border: 1px solid rgba(85,216,206,.22);
  background: rgba(85,216,206,.065);
  border-radius: 16px;
  max-width: 590px;
}
.status-card-dot { margin-top: 8px; }
.status-card strong { display: block; font-size: .92rem; }
.status-card span { display: block; color: var(--muted); font-size: .85rem; margin-top: 2px; }

.hero-art {
  position: relative;
  height: 600px;
  opacity: .95;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(.2px);
}
.orb-a {
  width: 430px; height: 430px;
  right: -65px; top: 72px;
  border: 1px solid rgba(85,216,206,.34);
  box-shadow: inset 0 0 80px rgba(85,216,206,.05), 0 0 120px rgba(85,216,206,.05);
}
.orb-b {
  width: 290px; height: 290px;
  right: 68px; top: 139px;
  border: 1px solid rgba(244,189,62,.24);
}
.path-lines { position: absolute; inset: 40% -20% -10% -10%; transform: rotate(-8deg); }
.path-lines i {
  position: absolute;
  left: 0;
  width: 118%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(85,216,206,.3), rgba(244,189,62,.58), transparent);
  transform-origin: 60% 50%;
  box-shadow: 0 0 15px rgba(85,216,206,.12);
}
.path-lines i:nth-child(1) { top: 18%; transform: rotate(9deg); }
.path-lines i:nth-child(2) { top: 34%; transform: rotate(4deg); }
.path-lines i:nth-child(3) { top: 50%; transform: rotate(0deg); }
.path-lines i:nth-child(4) { top: 66%; transform: rotate(-4deg); }
.path-lines i:nth-child(5) { top: 82%; transform: rotate(-9deg); }

.section { padding: 118px 0; position: relative; }
.section-heading { margin-bottom: 58px; }
.section-heading.narrow { max-width: 760px; }
.section-heading.centered { text-align: center; max-width: 760px; margin-inline: auto; }
.section h2 {
  margin: 0;
  font-size: clamp(2.45rem, 4.4vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: -.045em;
}
.section h3 { margin: 0; line-height: 1.18; }
.prose p { color: #c5ced6; margin: 0 0 1.1em; }
.prose p:first-child { color: var(--text); font-size: 1.17rem; }
.availability { padding-top: 6px; }
.availability strong { color: var(--gold); }

.app-section {
  background:
    radial-gradient(circle at 78% 24%, rgba(47,85,156,.15), transparent 25%),
    var(--bg);
}
.app-layout {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 90px;
  align-items: start;
}
.app-copy { padding-top: 18px; max-width: 520px; }
.device-shot { margin: 0; }
.device-frame {
  position: relative;
  max-width: 380px;
  margin-left: auto;
  padding: 9px;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 38px;
  background: linear-gradient(160deg, rgba(255,255,255,.12), rgba(255,255,255,.025));
  box-shadow: var(--shadow), 0 0 0 10px rgba(255,255,255,.015);
}
.device-frame::before {
  content: "";
  position: absolute;
  width: 74px;
  height: 5px;
  border-radius: 99px;
  background: rgba(5,10,15,.75);
  top: 11px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.device-frame img { width: 100%; border-radius: 30px; background: #fff; }
.device-shot figcaption {
  max-width: 380px;
  margin: 20px 0 0 auto;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.5;
}
.device-shot figcaption strong { display: block; color: var(--text); font-size: .86rem; margin-bottom: 3px; }
.device-shot figcaption span { display: block; }

.proof-strip {
  margin-top: 110px;
  padding: 72px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(255,255,255,.045), rgba(255,255,255,.018));
  display: grid;
  grid-template-columns: 1fr .85fr;
  align-items: center;
  gap: 80px;
  overflow: hidden;
}
.proof-copy { max-width: 530px; }
.proof-copy h3 { font-size: clamp(2rem, 3.5vw, 3.5rem); letter-spacing: -.04em; margin-bottom: 24px; }
.proof-copy p:last-child { color: var(--muted); }
.device-frame.small { max-width: 310px; }
.device-shot-secondary figcaption { max-width: 310px; }

.audiences { background: var(--bg-deep); }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.audience-card {
  padding: 34px 32px 36px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface-soft);
  min-height: 410px;
}
.card-index { margin: 0 0 62px; color: var(--gold); font-size: .75rem; letter-spacing: .12em; font-weight: 800; }
.audience-card h3 { font-size: 1.62rem; margin-bottom: 23px; }
.audience-card p:not(.card-index) { color: var(--muted); font-size: .93rem; }

.canon {
  overflow: hidden;
  background:
    radial-gradient(circle at 10% 50%, rgba(85,216,206,.09), transparent 27%),
    linear-gradient(180deg, #071521, #06111c);
}
.canon-inner { display: grid; grid-template-columns: .75fr 1.25fr; gap: 80px; align-items: start; }
.canon-label { position: relative; min-height: 420px; }
.canon-number {
  position: absolute;
  margin: 0;
  top: -68px;
  left: -18px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(85,216,206,.22);
  font-size: clamp(17rem, 31vw, 31rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -.08em;
  user-select: none;
}
.canon-copy { max-width: 690px; padding-top: 20px; }
.canon-copy > p { color: var(--muted); }
.canon-copy > p:first-child { color: #d7e1e7; }
.canon-copy h2 { color: var(--gold); margin: 26px 0 30px; font-size: clamp(3rem, 5.7vw, 6.4rem); max-width: 650px; }
.canon-copy strong { color: var(--text); }

.book { background: #07111b; }
.book-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 105px; align-items: center; }
.book-cover-wrap { margin: 0; }
.book-cover {
  width: min(100%, 370px);
  margin-inline: auto;
  box-shadow: 0 40px 90px rgba(0,0,0,.52), 0 0 0 1px rgba(255,255,255,.1);
  border-radius: 2px;
}
.book-copy { max-width: 680px; }
.book-copy h2 { margin-bottom: 20px; }
.book-subtitle { color: #d9e1e6; font-size: 1.12rem; line-height: 1.5; max-width: 600px; }
.book-meta { color: var(--gold); font-size: .85rem; font-weight: 700; letter-spacing: .04em; }
.book-copy > p:not(.eyebrow):not(.book-subtitle):not(.book-meta) { color: var(--muted); }
.book-status {
  display: inline-flex;
  flex-direction: column;
  margin-top: 20px;
  padding: 14px 17px;
  border-left: 2px solid var(--teal);
  background: rgba(85,216,206,.055);
}
.book-status span { color: var(--teal); text-transform: uppercase; letter-spacing: .13em; font-size: .66rem; font-weight: 800; }
.book-status strong { margin-top: 4px; font-size: .88rem; color: #d7e1e7; }

.site-footer {
  padding: 40px 0;
  background: #02070d;
  border-top: 1px solid var(--line);
}
.footer-grid { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 30px; }
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand img { width: 38px; height: 38px; border-radius: 50%; background: #fff; }
.footer-brand strong { display: block; letter-spacing: .11em; font-size: .83rem; }
.footer-brand span { display: block; color: var(--muted); font-size: .72rem; margin-top: 1px; }
.footer-status { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .74rem; }
.copyright { margin: 0; color: #7e8994; font-size: .74rem; }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; border-radius: 5px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

@media (max-width: 980px) {
  .hero, .hero-grid { min-height: 720px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { position: absolute; inset: 110px -120px auto auto; width: 520px; opacity: .46; pointer-events: none; }
  .hero-copy { max-width: 760px; }
  .app-layout, .proof-strip, .canon-inner, .book-layout { grid-template-columns: 1fr; }
  .app-layout { gap: 55px; }
  .app-copy { max-width: 720px; }
  .device-frame, .device-shot figcaption { margin-inline: auto; }
  .proof-strip { padding: 54px; gap: 45px; }
  .audience-grid { grid-template-columns: 1fr; }
  .audience-card { min-height: 0; }
  .card-index { margin-bottom: 26px; }
  .canon-label { min-height: 170px; }
  .canon-number { top: -90px; font-size: 20rem; }
  .canon-copy { padding-top: 0; }
  .book-layout { gap: 65px; }
  .book-cover { width: min(75%, 360px); }
  .footer-grid { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .container { width: min(calc(100% - 28px), var(--max)); }
  .site-header { padding-top: 18px; }
  .brand-name { letter-spacing: .1em; font-size: .78rem; }
  .brand-mark-wrap { width: 36px; height: 36px; }
  .status-link { display: none; }
  .hero, .hero-grid { min-height: 760px; }
  .hero-grid { padding-top: 92px; }
  .hero h1 { font-size: clamp(4.15rem, 21vw, 6.1rem); }
  .hero-deck { margin-top: 28px; }
  .hero-art { width: 430px; right: -225px; top: 120px; opacity: .33; }
  .status-card { margin-top: 28px; }
  .section { padding: 82px 0; }
  .section-heading { margin-bottom: 42px; }
  .app-layout { gap: 44px; }
  .device-frame { max-width: min(100%, 340px); border-radius: 33px; padding: 7px; }
  .device-frame img { border-radius: 27px; }
  .proof-strip { margin-top: 76px; padding: 35px 22px; border-radius: 20px; }
  .audience-card { padding: 28px 24px; }
  .canon-label { min-height: 125px; }
  .canon-number { left: -8px; top: -80px; font-size: 16rem; }
  .canon-copy h2 { font-size: clamp(3.2rem, 15vw, 4.8rem); }
  .book-cover { width: min(84%, 320px); }
  .book-layout { gap: 48px; }
  .footer-grid { gap: 18px; }
}


/* v1.2 — teacher proof, Canon Zero typography, and contact */
.teacher-proof-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.teacher-proof {
  display: grid;
  grid-template-columns: minmax(15rem, .7fr) minmax(0, 1.65fr);
  gap: clamp(2.25rem, 6vw, 5.5rem);
  align-items: center;
}
.teacher-proof-copy h2 {
  margin: .65rem 0 1.25rem;
  max-width: 12ch;
  font-size: clamp(2.15rem, 4vw, 3.7rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}
.teacher-proof-copy > p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.75;
}
.teacher-proof-copy .demo-note {
  margin-top: 1.35rem;
  font-size: .8rem;
  opacity: .82;
}
.analytics-shot { margin: 0; min-width: 0; }
.analytics-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #0b1117;
  box-shadow: 0 30px 80px rgba(0,0,0,.34);
}
.analytics-frame img { display: block; width: 100%; height: auto; }
.analytics-shot figcaption {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: .86rem;
}
.analytics-shot figcaption strong { color: var(--text); font-size: .95rem; }

.canon-number { display: none !important; }
.canon-wordmark {
  margin: 1.1rem 0 0;
  display: flex;
  flex-direction: column;
  font-size: clamp(3.2rem, 8vw, 7.4rem);
  font-weight: 760;
  line-height: .82;
  letter-spacing: -.065em;
  color: var(--text);
}
.canon-wordmark span:last-child { color: var(--gold); }

.contact {
  border-top: 1px solid var(--line);
  padding-top: clamp(4rem, 8vw, 7rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
}
.contact-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem 4rem;
  align-items: end;
}
.contact h2 {
  margin: .5rem 0 1rem;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -.04em;
}
.contact p:not(.eyebrow) { color: var(--muted); max-width: 50rem; line-height: 1.7; }
.contact a { color: inherit; }
.contact-link {
  display: inline-flex;
  gap: .55rem;
  align-items: center;
  padding: .9rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
}
.contact-link:hover { border-color: var(--cyan); }
.footer-contact a { color: var(--muted); text-decoration: none; }
.footer-contact a:hover { color: var(--text); }

@media (max-width: 820px) {
  .teacher-proof { grid-template-columns: 1fr; }
  .teacher-proof-copy h2 { max-width: 16ch; }
  .contact-inner { grid-template-columns: 1fr; align-items: start; }
  .contact-link { justify-self: start; }
}

/* v1.3 — anti-harvesting contact presentation */
.contact-inner{grid-template-columns:minmax(0,1fr)}
.contact-email-image{display:block;width:min(100%,24rem);height:auto;margin-top:1.25rem;user-select:none;-webkit-user-drag:none}
.contact-link,.footer-contact{display:none!important}

/* v1.3a — contact email visual QA */
.contact-email-image {
  width: min(100%, 15rem);
}

/* v1.4 — iPhone/mobile hero width QA */
@media (max-width: 640px) {
  .hero h1 {
    font-size: clamp(3.35rem, 15vw, 5rem);
    letter-spacing: -.055em;
  }
  .hero h1 strong {
    max-width: 100%;
  }
}