@font-face {
  font-family: "DRMS Geist";
  src: url("fonts/geist-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #060d19;
  --ink-soft: #101b2d;
  --blue: #1169ff;
  --blue-bright: #58a0ff;
  --gold: #e9ad25;
  --ice: #edf5ff;
  --line: #dce5f0;
  --muted: #5d6979;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: "DRMS Geist", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 110px 0; }

.hero {
  position: relative;
  min-height: 790px;
  overflow: hidden;
  background:
    radial-gradient(circle at 76% 22%, rgba(27, 111, 255, .24), transparent 30%),
    linear-gradient(120deg, #060d19, #0b1729 72%, #08101e);
  color: #fff;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}
.nav {
  position: relative;
  z-index: 4;
  display: flex;
  min-height: 94px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.logo { width: 170px; filter: brightness(0) invert(1); }
.nav-link { font-size: .8rem; font-weight: 780; }
.nav-link::after { content: " ↓"; color: var(--blue-bright); }
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: .98fr 1.02fr;
  gap: 58px;
  align-items: center;
  padding: 72px 0 110px;
}
.kicker {
  margin: 0 0 18px;
  color: #7db0ff;
  font-size: .73rem;
  font-weight: 850;
  letter-spacing: .17em;
  text-transform: uppercase;
}
.kicker-blue { color: var(--blue); }
.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(3.25rem, 5.6vw, 5.25rem);
  font-weight: 780;
  letter-spacing: -.035em;
  line-height: .98;
}
.hero h1 span {
  display: block;
  margin-top: 13px;
  color: var(--blue-bright);
  font-size: .74em;
  font-weight: 720;
  letter-spacing: -.015em;
  line-height: 1.05;
}
.hero-text {
  max-width: 610px;
  margin: 31px 0 0;
  color: #bfcbda;
  font-size: 1.22rem;
  line-height: 1.55;
}
.hero-text strong { color: #fff; }
.hero-product-mobile,
.mobile-label { display: none; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-actions .button { min-width: 190px; }
.hero-actions .button > span { width: 100%; text-align: center; }
.button {
  display: inline-flex;
  min-height: 55px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  padding: 0 25px;
  font-size: .87rem;
  font-weight: 820;
  line-height: 1.2;
  text-align: center;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: #fff; box-shadow: 0 15px 42px rgba(17,105,255,.33); }
.button-primary:hover { background: #2d7cff; }
.button-ghost { border: 1px solid rgba(88,160,255,.72); background: rgba(17,105,255,.14); color: var(--blue-bright); }
.button-ghost:hover { border-color: var(--blue-bright); background: rgba(17,105,255,.23); }
.button-secondary { border: 1px solid #b7c7da; background: #fff; color: #163458; }
.button-secondary:hover { border-color: var(--blue); }
.hero-offer {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-top: 19px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px;
  padding: 12px 15px;
  background: rgba(255,255,255,.05);
  color: #bac7d8;
  font-size: .7rem;
}
.hero-offer strong { color: #fff; font-size: 1.35rem; }
.hero-offer > span { position: relative; padding-left: 17px; }
.hero-offer > span::before { content: "✓"; position: absolute; left: 0; color: var(--blue-bright); font-weight: 900; }
.hero-product {
  position: relative;
  width: min(570px, 100%);
  justify-self: end;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 16px;
  background: #07101e;
  box-shadow: 0 30px 70px rgba(0,0,0,.36);
}
.hero-product > img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.numbers { position: relative; z-index: 3; border-bottom: 1px solid var(--line); background: #fff; }
.numbers-grid { display: grid; grid-template-columns: repeat(4,1fr); }
.numbers article { display: flex; min-height: 112px; align-items: center; gap: 13px; padding: 22px 26px; border-right: 1px solid var(--line); }
.numbers article:first-child { border-left: 1px solid var(--line); }
.numbers strong { color: var(--blue); font-size: 1.65rem; letter-spacing: -.04em; }
.numbers span { max-width: 112px; color: var(--muted); font-size: .72rem; line-height: 1.35; }

.section-heading { max-width: 850px; margin: 0 auto 52px; text-align: center; }
.left-heading { max-width: 840px; margin-left: max(20px, calc((100% - 1160px)/2)); text-align: left; }
.section-heading h2,
.video-copy h2,
.manual-copy h2,
.application-copy h2,
.devices-copy h2,
.teacher-copy h2,
.offer-copy h2,
.faq-intro h2 {
  margin: 0;
  font-size: clamp(2.45rem, 5vw, 4.25rem);
  font-weight: 860;
  letter-spacing: -.058em;
  line-height: 1.02;
}
.section-heading > p:last-child {
  max-width: 700px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.72;
}
.left-heading > p:last-child { margin-left: 0; }

.problem { background: #f6f8fb; }
.problem-inner { max-width: 1000px; }
.problem-quote {
  position: relative;
  margin: 0;
  border-left: 4px solid var(--blue);
  padding: 8px 0 8px 34px;
}
.problem-quote h2 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(2.5rem, 4.8vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.04;
}
.problem-quote h2 span,
.problem-quote h2 small {
  display: block;
}
.problem-quote h2 small {
  margin-top: 11px;
  font-size: .56em;
  font-weight: 690;
  letter-spacing: -.012em;
  line-height: 1.16;
}
.problem-quote p {
  max-width: 720px;
  margin: 27px 0 0;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.72;
}

.section-dark { background: var(--ink); color: #fff; }
.video-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 70px; align-items: center; }
.video-copy > p:not(.kicker) { margin: 24px 0 0; color: #a6b4c7; font-size: 1rem; line-height: 1.75; }
.method-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 30px; }
.method-steps span { display: flex; align-items: center; gap: 11px; border: 1px solid rgba(255,255,255,.12); border-radius: 9px; padding: 14px; color: #c8d2df; font-size: .76rem; }
.method-steps strong { display: grid; width: 27px; height: 27px; flex: 0 0 auto; place-items: center; border-radius: 7px; background: var(--blue); color: #fff; font-size: .68rem; }
.video-frame { position: relative; overflow: hidden; aspect-ratio: 16/9; border: 1px solid rgba(255,255,255,.14); border-radius: 16px; background: #02050b; box-shadow: 0 30px 80px rgba(0,0,0,.36); }
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.curriculum { background: #fff; }
.curriculum-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.curriculum-grid article { min-height: 320px; border: 1px solid var(--line); border-radius: 14px; padding: 30px; background: #fff; box-shadow: 0 14px 42px rgba(20,43,74,.045); }
.module-number { display: inline-grid; min-height: 36px; place-items: center; border-radius: 9px; padding: 0 13px; background: var(--ice); color: var(--blue); font-size: .66rem; font-weight: 850; text-transform: uppercase; }
.curriculum-grid h3 { max-width: 450px; margin: 45px 0 12px; font-size: 1.45rem; letter-spacing: -.035em; }
.curriculum-grid p { max-width: 500px; margin: 0; color: var(--muted); font-size: .87rem; line-height: 1.68; }
.topic-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 24px; }
.topic-list span { border-radius: 999px; padding: 7px 10px; background: #f2f5f9; color: #4b596b; font-size: .62rem; font-weight: 720; }
.lesson-details { margin-top: 22px; border: 1px solid var(--line); border-radius: 14px; background: #f8fafc; }
.lesson-details summary { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 20px; padding: 0 26px; cursor: pointer; list-style: none; font-size: .95rem; font-weight: 800; }
.lesson-details summary::-webkit-details-marker { display: none; }
.lesson-details summary strong { color: var(--blue); font-size: 1.5rem; transition: transform .18s ease; }
.lesson-details[open] summary strong { transform: rotate(45deg); }
.lesson-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.lesson-list > div { display: flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 20px; padding: 0 25px; border-bottom: 1px solid var(--line); background: #fff; color: #344154; font-size: .78rem; }
.lesson-list > div:nth-child(odd) { border-right: 1px solid var(--line); }
.lesson-list span { display: flex; align-items: center; gap: 11px; }
.lesson-list b { color: var(--blue); font-size: .61rem; letter-spacing: .08em; }
.lesson-list time { color: #8693a4; font-size: .66rem; font-variant-numeric: tabular-nums; }
.total-time { margin: 0; padding: 18px 25px; color: var(--blue); font-size: .76rem; text-align: right; }

.manual { overflow: hidden; background: #f6f8fb; }
.manual-grid { display: grid; grid-template-columns: .94fr 1.06fr; gap: 64px; align-items: center; }
.manual-visual { position: relative; min-height: 535px; }
.manual-cover,
.manual-sheet,
.manual-mobile { position: absolute; border-radius: 7px; box-shadow: 0 24px 60px rgba(14,35,62,.24); }
.manual-cover { z-index: 4; top: 42px; left: 8%; width: 44%; transform: rotate(-2deg); }
.manual-sheet { width: 39%; border: 1px solid #d8e0ea; background: #fff; }
.sheet-one { z-index: 2; top: 8px; right: 17%; transform: rotate(7deg); }
.sheet-two { z-index: 1; top: 142px; right: 10%; transform: rotate(11deg); }
.manual-mobile { z-index: 5; right: 5%; bottom: 3px; width: 28%; border: 5px solid #0b1320; border-radius: 18px; }
.manual-copy > p:not(.kicker) { margin: 24px 0 0; color: var(--muted); font-size: 1rem; line-height: 1.75; }
.manual-title { display: grid; gap: 4px; }
.manual-title > span { display: flex; align-items: baseline; gap: 13px; }
.manual-title strong { font-size: 1em; }
.manual-title em { color: var(--blue); font-size: .35em; font-style: normal; font-weight: 780; letter-spacing: -.02em; }
.manual-copy ul { display: grid; gap: 13px; margin: 29px 0 0; padding: 0; list-style: none; }
.manual-copy li { position: relative; padding-left: 25px; color: #36475c; font-size: .85rem; line-height: 1.55; }
.manual-copy li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 900; }

.application-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 80px; align-items: center; }
.application-copy > p:not(.kicker),
.devices-copy > p:not(.kicker),
.teacher-copy > p,
.offer-copy > p,
.faq-intro > p { color: #a6b4c7; font-size: 1rem; line-height: 1.75; }
.application-copy > p:not(.kicker) { margin: 24px 0 0; }
.application-copy blockquote { margin: 30px 0 0; border-left: 3px solid var(--blue); padding: 5px 0 5px 20px; color: #fff; font-size: 1.05rem; font-weight: 740; line-height: 1.55; }
.application-visual { position: relative; }
.application-visual img { width: 100%; border: 1px solid rgba(255,255,255,.14); border-radius: 15px; box-shadow: 0 28px 65px rgba(0,0,0,.35); }
.visual-label { position: absolute; right: -18px; bottom: -24px; display: grid; border: 1px solid rgba(255,255,255,.15); border-radius: 10px; padding: 14px 17px; background: rgba(5,12,23,.94); box-shadow: 0 18px 40px rgba(0,0,0,.3); }
.visual-label strong { color: #fff; font-size: .78rem; }
.visual-label span { margin-top: 4px; color: #91a0b4; font-size: .62rem; }

.comparison { background: #f6f8fb; }
.comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 17px; }
.choice-card { position: relative; min-height: 540px; border: 1px solid var(--line); border-radius: 17px; padding: 38px; background: #fff; box-shadow: 0 18px 55px rgba(21,44,76,.07); }
.choice-card h3 { margin: 38px 0 0; font-size: 1.65rem; letter-spacing: -.04em; }
.choice-tag { display: inline-block; border-radius: 999px; padding: 8px 11px; background: var(--ice); color: var(--blue); font-size: .63rem; font-weight: 830; text-transform: uppercase; }
.choice-price { display: flex; align-items: flex-end; gap: 10px; margin-top: 18px; }
.choice-price strong { font-size: 2.5rem; letter-spacing: -.055em; }
.choice-price span { padding-bottom: 5px; color: #7f8da0; font-size: .7rem; }
.choice-card ul { display: grid; gap: 15px; margin: 31px 0 38px; padding: 0; list-style: none; }
.choice-card li { position: relative; padding-left: 24px; color: #4f5d6f; font-size: .84rem; line-height: 1.55; }
.choice-card li::before { content: "✓"; position: absolute; left: 0; color: var(--blue); font-weight: 900; }
.choice-card .button { width: 100%; }
.product-choice { border: 2px solid var(--blue); }
.product-choice::after { content: "OFFRE PRINCIPALE"; position: absolute; top: -12px; right: 28px; border-radius: 999px; padding: 7px 11px; background: var(--blue); color: #fff; font-size: .58rem; font-weight: 850; letter-spacing: .08em; }
.school-choice { background: #eef3f9; box-shadow: none; }
.school-choice .choice-tag { background: #fff; color: #58708e; }

.devices-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 85px; align-items: center; }
.devices-visual img { width: 100%; filter: drop-shadow(0 35px 45px rgba(0,0,0,.34)); }
.devices-copy > p:not(.kicker) { margin: 23px 0 0; }

.teacher { background: #f6f8fb; }
.teacher-grid { display: grid; grid-template-columns: .84fr 1.16fr; gap: 80px; align-items: center; }
.teacher-photo { overflow: hidden; border-radius: 16px; background: var(--ink); box-shadow: 0 30px 70px rgba(19,41,72,.17); }
.teacher-photo img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.teacher-copy > p { margin: 22px 0 0; color: var(--muted); }
.teacher-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 31px; }
.teacher-stats span { border: 1px solid var(--line); border-radius: 10px; padding: 16px; background: #fff; color: var(--muted); font-size: .67rem; line-height: 1.4; }
.teacher-stats strong { display: block; margin-bottom: 4px; color: var(--ink); font-size: 1.15rem; }

.reviews { background: #fff; }
.review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
.review-grid article { display: flex; min-height: 320px; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; padding: 29px; background: #fff; box-shadow: 0 14px 42px rgba(20,43,74,.045); }
.stars { color: var(--gold); font-size: .8rem; letter-spacing: .12em; }
.review-grid blockquote { flex: 1; margin: 21px 0 29px; color: #344154; font-size: .89rem; line-height: 1.72; }
.review-grid footer { display: flex; align-items: center; gap: 11px; }
.review-avatar { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 50%; background: var(--ice); color: var(--blue); font-size: .72rem; font-weight: 850; }
.review-grid footer strong, .review-grid footer small { display: block; }
.review-grid footer strong { font-size: .78rem; }
.review-grid footer small { margin-top: 3px; color: #8c97a7; font-size: .63rem; }

.offer { background: var(--ink); color: #fff; }
.offer-grid { display: grid; grid-template-columns: 1fr 440px; gap: 90px; align-items: center; }
.offer-copy > p:not(.kicker) { max-width: 620px; margin: 23px 0 0; }
.offer-copy ul { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 28px; margin: 31px 0 0; padding: 0; list-style: none; }
.offer-copy li { position: relative; padding-left: 22px; color: #d5deea; font-size: .82rem; }
.offer-copy li::before { content: "✓"; position: absolute; left: 0; color: var(--blue-bright); font-weight: 900; }
.price-card { border: 1px solid rgba(255,255,255,.14); border-radius: 17px; padding: 38px; background: rgba(255,255,255,.055); box-shadow: 0 30px 80px rgba(0,0,0,.25); }
.price-label { color: #8fb7f9; font-size: .68rem; font-weight: 820; letter-spacing: .1em; text-transform: uppercase; }
.price { display: flex; align-items: flex-end; gap: 9px; margin-top: 21px; }
.price strong { font-size: 3.55rem; letter-spacing: -.065em; line-height: 1; }
.price-card > p { margin: 13px 0 0; color: #a6b4c7; font-size: .78rem; }
.price-button { width: 100%; margin-top: 28px; }
.secure-line { margin-top: 16px; color: #7e8da1; font-size: .66rem; text-align: center; }
.secure-line span { color: #18a468; }

.faq { background: #f6f8fb; }
.faq-grid { display: grid; grid-template-columns: .74fr 1.26fr; gap: 90px; align-items: start; }
.faq-intro { position: sticky; top: 50px; }
.faq-intro > p:not(.kicker) { margin-top: 22px; color: var(--muted); font-size: .88rem; }
.faq-intro a { color: var(--blue); font-weight: 760; }
.faq-list { display: grid; gap: 10px; }
.faq-list details { border: 1px solid var(--line); border-radius: 11px; background: #fff; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 24px; cursor: pointer; font-size: .88rem; font-weight: 770; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--blue); font-size: 1.35rem; font-weight: 450; transition: transform .18s ease; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { margin: 0 24px; padding: 0 0 22px; color: var(--muted); font-size: .84rem; line-height: 1.72; }

.footer { padding: 34px 0; border-top: 1px solid rgba(255,255,255,.08); background: #030811; color: #fff; }
.footer-grid { display: grid; grid-template-columns: auto 1fr auto; gap: 35px; align-items: center; }
.footer img { width: 125px; }
.footer p { margin: 0; color: #7f8ea3; font-size: .73rem; }
.footer-grid > div { display: flex; gap: 21px; color: #b3bfce; font-size: .72rem; }
.mobile-cta { display: none; }

@media (max-width: 1000px) {
  .hero-grid { gap: 35px; }
  .video-grid, .manual-grid { gap: 50px; }
  .manual-visual { min-height: 500px; }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 720px; }
  .hero-product { width: min(620px, 100%); justify-self: start; }
  .numbers-grid { grid-template-columns: repeat(2,1fr); }
  .numbers article:nth-child(3) { border-left: 1px solid var(--line); }
  .numbers article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .video-grid, .manual-grid, .application-grid, .devices-grid, .teacher-grid, .offer-grid, .faq-grid { grid-template-columns: 1fr; gap: 55px; }
  .manual-visual { width: min(620px, 100%); min-height: 560px; margin: 0 auto; }
  .manual-copy { order: -1; }
  .review-grid { grid-template-columns: repeat(2,1fr); }
  .devices-copy { order: -1; }
  .price-card { max-width: 480px; }
  .faq-intro { position: static; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 1160px); }
  .nav { min-height: 76px; }
  .logo { width: 135px; }
  .nav-link { font-size: .7rem; }
  .hero-grid { padding: 58px 0 78px; }
  .hero h1 { font-size: clamp(3.05rem, 15.5vw, 4.4rem); }
  .hero-copy { display: flex; flex-direction: column; }
  .hero-text { font-size: .98rem; }
  .hero-product-desktop,
  .desktop-label { display: none; }
  .hero-product-mobile { display: block; order: 0; margin-top: 28px; }
  .mobile-label { display: inline; }
  .hero-actions { display: grid; order: 2; margin-top: 12px; }
  .button { width: 100%; }
  .hero-offer { display: grid; order: 1; grid-template-columns: 1fr 1fr; width: 100%; gap: 9px; }
  .hero-offer strong { grid-column: 1/-1; padding-bottom: 9px; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 1.45rem; }
  .hero-product { width: 100%; }
  .hero-product > img { width: 100%; }
  .numbers-grid { grid-template-columns: 1fr; }
  .numbers article { min-height: 82px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .numbers article:last-child { border-bottom: 0; }
  .section { padding: 82px 0; }
  .section-heading { margin-bottom: 37px; text-align: left; }
  .left-heading { margin-left: 14px; }
  .section-heading h2, .video-copy h2, .manual-copy h2, .application-copy h2, .devices-copy h2, .teacher-copy h2, .offer-copy h2, .faq-intro h2 { font-size: 2.5rem; }
  .section-heading > p:last-child { margin-left: 0; font-size: .94rem; }
  .curriculum-grid, .comparison-grid, .review-grid { grid-template-columns: 1fr; }
  .problem-quote { padding: 5px 0 5px 22px; }
  .problem-quote h2 { font-size: 2.35rem; }
  .problem-quote p { margin-top: 22px; font-size: .94rem; }
  .method-steps { grid-template-columns: 1fr; }
  .curriculum-grid article { min-height: auto; }
  .lesson-list { grid-template-columns: 1fr; }
  .lesson-list > div:nth-child(odd) { border-right: 0; }
  .lesson-details summary { min-height: 70px; padding: 0 18px; font-size: .82rem; }
  .lesson-list > div { padding: 0 17px; font-size: .72rem; }
  .total-time { padding: 17px; text-align: left; }
  .manual-visual { min-height: 425px; }
  .manual-cover { top: 30px; left: 5%; width: 47%; }
  .manual-sheet { width: 42%; }
  .sheet-one { right: 13%; }
  .sheet-two { top: 118px; right: 6%; }
  .manual-mobile { right: 3%; width: 29%; border-width: 3px; }
  .manual-title { gap: 5px; }
  .manual-title > span { gap: 9px; }
  .manual-title em { font-size: .4em; }
  .visual-label { right: 8px; bottom: -18px; }
  .choice-card { min-height: auto; padding: 30px 23px; }
  .choice-price { display: grid; }
  .choice-price span { padding: 0; }
  .teacher-stats { grid-template-columns: 1fr; }
  .review-grid article { min-height: auto; }
  .offer-copy ul { grid-template-columns: 1fr; }
  .price-card { padding: 28px 22px; }
  .price strong { font-size: 3rem; }
  .footer { padding-bottom: 102px; }
  .footer-grid { grid-template-columns: 1fr; gap: 18px; }
  .footer-grid > div { justify-content: space-between; }
  .mobile-cta {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 11px 14px max(11px,env(safe-area-inset-bottom));
    background: rgba(6,13,25,.97);
    color: #fff;
    backdrop-filter: blur(15px);
  }
  .mobile-cta strong, .mobile-cta small { display: block; }
  .mobile-cta strong { font-size: .8rem; }
  .mobile-cta small { margin-top: 3px; color: #8f9db0; font-size: .6rem; }
  .mobile-cta a { border-radius: 7px; padding: 12px 18px; background: var(--blue); font-size: .73rem; font-weight: 820; }
}