@font-face {
  font-family: "Onest";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/onest-cyrillic.fe2bd26ae82a.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
  font-family: "Onest";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/onest-latin.3db826ed1c5d.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Onest Math";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/onest-math.44a3e14c25d1.woff2") format("woff2");
}

:root {
  --paper: #f4f3ef;
  --paper-cool: #eeebf7;
  --white: #fff;
  --ink: #151419;
  --ink-soft: #5d5b64;
  --muted: #8c8992;
  --violet: #6841e3;
  --violet-deep: #3a1e91;
  --violet-pale: #dfd6ff;
  --signal: #d8ff57;
  --line: #d7d4ce;
  --dark-line: rgba(255, 255, 255, .16);
  --container: min(1240px, calc(100% - 64px));
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Onest", "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button, a { font-family: inherit; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
svg { display: block; }
::selection { color: var(--ink); background: var(--signal); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; padding: 12px 16px; color: white; background: var(--ink); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.public-container { width: var(--container); margin-inline: auto; }
.section-space { padding-block: 128px; }

.public-header { position: fixed; z-index: 100; inset: 0 0 auto; height: 82px; color: var(--ink); background: rgba(244, 243, 239, .96); border-bottom: 1px solid rgba(21, 20, 25, .18); transition: background .2s ease, box-shadow .2s ease; }
.public-header.is-scrolled { background: rgba(255, 255, 255, .96); box-shadow: 0 10px 30px rgba(21, 20, 25, .06); }
.public-nav-wrap { width: var(--container); height: 100%; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 32px; margin-inline: auto; }
.portal-entry { width: max-content; display: inline-flex; align-items: center; gap: 9px; font-size: 12px; font-weight: 650; }
.portal-entry svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.portal-entry:hover { color: var(--violet); }
.public-brand { display: inline-flex; align-items: center; gap: 11px; }
.public-brand-mark { width: 40px; height: 40px; display: grid; place-items: center; flex: 0 0 auto; }
.public-brand-mark img { width: 100%; height: 100%; display: block; }
.public-brand > span:last-child { display: flex; flex-direction: column; }
.public-brand strong { font-size: 14px; font-weight: 750; letter-spacing: -.025em; }
.public-brand small { margin-top: 2px; color: var(--muted); font-size: 8px; letter-spacing: .09em; text-transform: uppercase; }
.public-menu { display: flex; align-items: center; justify-content: flex-end; gap: 24px; }
.public-menu > a { position: relative; font-size: 11px; font-weight: 600; }
.public-menu > a:not(.menu-contact)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 1px; background: var(--ink); transition: right .2s ease; }
.public-menu > a:not(.menu-contact):hover::after { right: 0; }
.public-menu .menu-contact { padding: 12px 15px; color: white; background: var(--violet); border-radius: 8px; }
.public-menu .menu-contact:hover { background: var(--violet-deep); }
.nav-toggle { display: none; }

.hero { position: relative; min-height: 850px; padding: 164px 0 76px; background: var(--paper); border-bottom: 1px solid var(--line); overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 82px 0 auto; height: 1px; background: linear-gradient(90deg, transparent, var(--violet) 25%, transparent 25%); opacity: .65; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(420px, .88fr); align-items: center; gap: clamp(48px, 6vw, 96px); }
.section-kicker { display: flex; align-items: center; gap: 10px; margin: 0 0 28px; color: inherit; font: 650 10px/1.35 "Onest", sans-serif; letter-spacing: .14em; text-transform: uppercase; }
.section-kicker span { width: 24px; height: 2px; background: var(--violet); }
.section-kicker.dark { color: var(--ink); }
.hero h1, .section-heading h2, .section-intro h2, .levels-heading h2, .score-copy h2, .process-sticky h2, .pricing-heading h2, .platform-heading h2, .principles-grid h2, .results-heading h2, .contact-inner h2, .legal-hero h1 { margin: 0; font-weight: 690; letter-spacing: -.058em; text-wrap: balance; }
.hero h1 { max-width: 760px; font-size: clamp(62px, 6.3vw, 96px); line-height: .94; }
.hero h1 em, .section-heading h2 em { color: var(--violet); font-style: normal; }
.hero-lead { max-width: 640px; margin: 32px 0 0; color: var(--ink-soft); font-size: clamp(16px, 1.45vw, 19px); line-height: 1.62; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 38px; }
.public-button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; padding: 0 20px; border: 1px solid var(--ink); border-radius: 8px; font-size: 12px; font-weight: 700; transition: transform .2s ease, background .2s ease, color .2s ease; }
.public-button:hover { transform: translateY(-2px); }
.public-button.primary { color: white; background: var(--ink); }
.public-button.primary:hover { color: var(--ink); background: var(--signal); }
.public-button.ghost { background: transparent; }
.public-button.ghost:hover { color: white; background: var(--violet); border-color: var(--violet); }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin: 64px 0 0; padding: 0; border-top: 1px solid var(--line); }
.hero-facts > div { padding: 20px 18px 0 0; }
.hero-facts > div + div { padding-left: 18px; border-left: 1px solid var(--line); }
.hero-facts dt { font-size: 23px; font-weight: 720; letter-spacing: -.045em; }
.hero-facts dd { max-width: 120px; margin: 6px 0 0; color: var(--muted); font-size: 10px; line-height: 1.45; }

.math-stage { position: relative; min-height: 598px; padding: 20px; color: white; background: var(--ink); border-radius: var(--radius); box-shadow: 18px 18px 0 var(--violet-pale); }
.stage-header { display: flex; justify-content: space-between; padding: 1px 0 18px; color: rgba(255, 255, 255, .55); font-size: 9px; font-weight: 650; letter-spacing: .11em; text-transform: uppercase; }
.stage-header span:last-child { color: var(--signal); }
.stage-problem { display: grid; grid-template-columns: 58px 1fr; gap: 13px; align-items: start; padding: 13px 15px; background: #211f25; border: 1px solid var(--dark-line); border-radius: 9px; }
.stage-problem > span { padding-top: 2px; color: var(--signal); font-size: 7px; font-weight: 720; letter-spacing: .12em; text-transform: uppercase; }
.stage-problem p { margin: 0; color: rgba(255, 255, 255, .83); font-size: 11px; line-height: 1.55; }
.stage-problem i, .stage-reasoning i { font-family: "Onest Math", "Onest", sans-serif; font-style: normal; }
.derivative-card { margin-top: 10px; color: var(--ink); background: var(--paper); border-radius: 10px; overflow: hidden; }
.derivative-card svg { width: 100%; height: auto; display: block; }
.derivative-grid path { fill: none; stroke: rgba(21, 20, 25, .09); stroke-width: 1; }
.derivative-axes path { fill: none; stroke: rgba(21, 20, 25, .58); stroke-width: 1.4; }
#axis-arrow path { fill: rgba(21, 20, 25, .65); }
.derivative-curve { fill: none; stroke: var(--violet); stroke-width: 4.5; stroke-linecap: round; }
.derivative-signs text { fill: var(--violet-deep); font: 750 13px/1 "Onest Math", "Onest", sans-serif; }
.derivative-roots circle { fill: white; stroke: var(--violet); stroke-width: 3; }
.derivative-roots .maximum-root { fill: var(--signal); stroke: var(--ink); stroke-width: 3; }
.derivative-labels text { fill: var(--ink-soft); font: 650 10px/1 "Onest Math", "Onest", sans-serif; }
.derivative-legend { min-height: 39px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 14px; border-top: 1px solid var(--line); font-size: 8px; }
.derivative-legend span { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-soft); }
.derivative-legend i { width: 8px; height: 8px; flex: 0 0 auto; background: var(--signal); border: 1px solid var(--ink); border-radius: 50%; }
.derivative-legend strong { color: var(--violet); font-weight: 720; text-align: right; }
.stage-reasoning { display: grid; grid-template-columns: 1fr 1fr; margin-top: 10px; border: 1px solid var(--dark-line); border-radius: 9px; overflow: hidden; }
.stage-reasoning > div { display: grid; grid-template-columns: 24px 1fr; gap: 9px; padding: 12px; }
.stage-reasoning > div + div { border-left: 1px solid var(--dark-line); }
.stage-reasoning > div > span { width: 22px; height: 22px; display: grid; place-items: center; color: var(--ink); background: var(--violet-pale); border-radius: 50%; font-size: 7px; font-weight: 760; }
.stage-reasoning p { margin: 0; color: rgba(255, 255, 255, .56); font-size: 8px; line-height: 1.55; }
.stage-reasoning p strong { display: block; margin-bottom: 4px; color: white; font-size: 9px; }
.stage-answer { min-height: 53px; display: grid; grid-template-columns: auto 36px 1fr; align-items: center; gap: 12px; margin-top: 10px; padding: 9px 14px; color: var(--ink); background: var(--signal); border-radius: 9px; }
.stage-answer span { font-size: 8px; font-weight: 720; letter-spacing: .1em; text-transform: uppercase; }
.stage-answer strong { font-size: 27px; line-height: 1; letter-spacing: -.05em; }
.stage-answer small { font-size: 9px; font-weight: 650; }
.scroll-cue { display: none; }

.about-section { background: white; }
.about-profile { display: grid; grid-template-columns: minmax(250px, .7fr) minmax(280px, .62fr) minmax(370px, 1fr); align-items: start; gap: clamp(32px, 4vw, 64px); }
.section-heading h2, .section-intro h2, .levels-heading h2, .score-copy h2, .process-sticky h2, .pricing-heading h2, .platform-heading h2, .principles-grid h2, .results-heading h2, .contact-inner h2 { font-size: clamp(43px, 4.5vw, 68px); line-height: 1.02; }
.about-heading h2 { font-size: clamp(40px, 3.8vw, 58px); }
.about-name { display: flex; flex-direction: column; gap: 7px; margin: 62px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.about-name strong { font-size: 13px; font-weight: 700; }
.about-name span { color: var(--muted); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.about-portrait { min-width: 0; margin: 0; }
.about-photo-shell { position: relative; aspect-ratio: 2 / 3; background: #8b0913; box-shadow: 14px 14px 0 var(--violet-pale); overflow: hidden; }
.about-photo-shell::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(21, 20, 25, .18); pointer-events: none; }
.about-photo-shell img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center 52%; }
.about-portrait figcaption { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 18px; color: var(--muted); font-size: 9px; }
.about-portrait figcaption span::before { content: ""; width: 7px; height: 7px; display: inline-block; margin-right: 8px; background: var(--signal); border: 1px solid var(--ink); border-radius: 50%; }
.about-portrait figcaption strong { color: var(--ink); font-size: 9px; font-weight: 650; text-align: right; }
.about-copy { padding-top: 43px; border-top: 1px solid var(--ink); }
.large-copy { margin: 0; font-size: clamp(21px, 2vw, 29px); font-weight: 520; line-height: 1.44; letter-spacing: -.025em; }
.about-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; margin-top: 44px; }
.about-columns p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.72; }

.directions-section { background: var(--paper); }
.section-intro { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 40px; margin-bottom: 68px; }
.section-intro .section-kicker { grid-column: 1 / -1; margin-bottom: -10px; }
.section-intro > p:last-child { max-width: 390px; margin: 0 0 7px; color: var(--ink-soft); font-size: 15px; line-height: 1.7; }
.direction-layout { display: grid; grid-template-columns: 1fr 1fr; background: var(--line); border: 1px solid var(--ink); }
.direction-card { position: relative; min-width: 0; min-height: 430px; display: flex; flex-direction: column; padding: 28px 30px 25px; background: var(--paper); border-bottom: 1px solid var(--line); overflow: hidden; }
.direction-card:nth-child(even) { border-left: 1px solid var(--line); }
.direction-card:nth-last-child(-n + 2) { border-bottom: 0; }
.direction-card-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.card-number { color: var(--violet); font-size: 11px; font-weight: 750; }
.card-tag { margin: 0; color: var(--muted); font-size: 9px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.direction-copy { display: grid; grid-template-columns: minmax(190px, .9fr) minmax(200px, 1.1fr); gap: 28px; align-items: start; padding: 34px 0 28px; }
.direction-card h3 { max-width: 390px; margin: 0; font-size: clamp(27px, 2.35vw, 36px); font-weight: 650; line-height: 1.06; letter-spacing: -.045em; }
.direction-copy p { max-width: 400px; margin: 2px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.68; }
.direction-main { color: white; background: var(--violet); }
.direction-main .card-number, .direction-main .card-tag { color: rgba(255, 255, 255, .67); }
.direction-main .direction-card-head { border-color: rgba(255, 255, 255, .22); }
.direction-main .direction-copy p { color: rgba(255, 255, 255, .72); }
.direction-accent { background: var(--violet-pale); }
.direction-exam-map { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: auto; }
.direction-exam-map > div { padding: 13px 14px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .18); }
.direction-exam-map span, .direction-exam-map strong { display: block; }
.direction-exam-map span { color: rgba(255, 255, 255, .55); font-size: 8px; }
.direction-exam-map strong { margin-top: 5px; font-size: 19px; font-weight: 660; }
.direction-exam-map i { height: 3px; display: block; margin-top: 11px; background: rgba(255, 255, 255, .14); }
.direction-exam-map b { width: var(--fill); height: 100%; display: block; background: var(--signal); }
.direction-geometry { min-height: 112px; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 20px; margin-top: auto; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.direction-geometry svg { width: 100%; height: 112px; }
.geometry-grid { fill: none; stroke: rgba(21, 20, 25, .08); stroke-width: 1; }
.geometry-shape { fill: rgba(104, 65, 227, .08); stroke: var(--violet); stroke-width: 2.5; }
.geometry-height { fill: none; stroke: var(--ink); stroke-width: 1.5; stroke-dasharray: 5 4; }
.direction-geometry circle { fill: var(--signal); stroke: var(--ink); }
.direction-geometry > span { display: flex; align-items: center; gap: 7px; padding-bottom: 12px; color: var(--muted); font-size: 7px; writing-mode: vertical-rl; transform: rotate(180deg); }
.direction-geometry > span i { width: 4px; height: 4px; background: var(--violet); border-radius: 50%; }
.direction-foundation { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: auto; border: 1px solid var(--line); }
.direction-foundation > div { min-height: 83px; display: flex; flex-direction: column; justify-content: space-between; gap: 10px; padding: 12px; }
.direction-foundation > div + div { border-left: 1px solid var(--line); }
.direction-foundation span { color: var(--ink-soft); font-size: 8px; line-height: 1.4; }
.direction-foundation b { color: var(--violet); font-size: 18px; font-weight: 680; }
.direction-nodes { position: relative; min-height: 92px; display: grid; grid-template-columns: 1fr 42px 1fr 42px 1fr; align-items: center; gap: 0; margin-top: auto; }
.direction-nodes span, .direction-nodes strong { min-height: 54px; display: grid; place-items: center; padding: 8px; background: rgba(255, 255, 255, .48); border: 1px solid rgba(21, 20, 25, .19); border-radius: 50%; font-size: 8px; text-align: center; }
.direction-nodes strong { color: white; background: var(--violet); border-color: var(--violet); }
.direction-nodes i { height: 1px; background: rgba(21, 20, 25, .3); }
.direction-nodes em { position: absolute; left: 50%; bottom: -2px; padding: 3px 6px; color: var(--violet); background: var(--violet-pale); font-size: 7px; font-style: normal; transform: translateX(-50%); }
.direction-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0 0; padding: 0; list-style: none; }
.direction-tags li { padding: 6px 8px; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px; font-size: 7px; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; }
.direction-main .direction-tags li { color: rgba(255, 255, 255, .7); border-color: rgba(255, 255, 255, .22); }

.levels-section { background: var(--paper-cool); }
.levels-heading { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 70px; margin-bottom: 58px; }
.levels-heading > p { max-width: 470px; margin: 0 0 7px; color: var(--ink-soft); font-size: 15px; line-height: 1.72; }
.level-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.level-card { min-width: 0; min-height: 610px; display: flex; flex-direction: column; padding: 28px 30px 30px; background: rgba(255, 255, 255, .52); }
.level-card + .level-card { border-left: 1px solid rgba(21, 20, 25, .2); }
.level-card-featured { color: white; background: var(--violet); }
.level-card-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.level-card-top > span { color: var(--violet); font-size: 11px; font-weight: 760; }
.level-card-top small { color: var(--muted); font-size: 8px; font-weight: 650; letter-spacing: .1em; text-transform: uppercase; }
.level-card-featured .level-card-top > span { color: var(--signal); }
.level-card-featured .level-card-top small { color: rgba(255, 255, 255, .58); }
.level-start { min-height: 73px; margin: 35px 0 0; padding: 15px 16px; color: var(--ink-soft); background: rgba(255, 255, 255, .55); border-left: 3px solid var(--violet); font-size: 11px; line-height: 1.6; }
.level-start span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 7px; font-weight: 720; letter-spacing: .1em; text-transform: uppercase; }
.level-card-featured .level-start { color: rgba(255, 255, 255, .7); }
.level-card-featured .level-start { background: rgba(255, 255, 255, .09); border-color: var(--signal); }
.level-card-featured .level-start span { color: rgba(255, 255, 255, .52); }
.level-card h3 { max-width: 340px; margin: 18px 0 0; font-size: clamp(27px, 2.3vw, 35px); font-weight: 650; line-height: 1.08; letter-spacing: -.045em; }
.level-card > p:not(.level-start) { margin: 20px 0 0; color: var(--ink-soft); font-size: 13px; line-height: 1.72; }
.level-card-featured > p:not(.level-start) { color: rgba(255, 255, 255, .72); }
.level-plan { display: grid; gap: 0; margin: 28px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.level-plan li { display: grid; grid-template-columns: 26px 1fr; align-items: center; gap: 10px; min-height: 43px; color: var(--ink-soft); border-bottom: 1px solid var(--line); font-size: 10px; }
.level-plan li span { color: var(--violet); font-size: 8px; font-weight: 750; }
.level-card-featured .level-plan { border-color: rgba(255, 255, 255, .2); }
.level-card-featured .level-plan li { color: rgba(255, 255, 255, .76); border-color: rgba(255, 255, 255, .2); }
.level-card-featured .level-plan li span { color: var(--signal); }
.level-route { display: grid; grid-template-columns: auto minmax(22px, 1fr) auto; align-items: center; gap: 12px; margin-top: auto; padding-top: 28px; font-size: 9px; }
.level-route span { color: var(--muted); }
.level-route i { height: 1px; background: var(--line); }
.level-route strong { max-width: 130px; color: var(--violet); font-weight: 720; text-align: right; }
.level-card-featured .level-route span { color: rgba(255, 255, 255, .52); }
.level-card-featured .level-route i { background: rgba(255, 255, 255, .28); }
.level-card-featured .level-route strong { color: var(--signal); }
.levels-diagnostic { display: grid; grid-template-columns: .85fr 1fr auto; align-items: center; gap: 34px; margin-top: 26px; padding: 24px 26px; color: white; background: var(--ink); border: 1px solid var(--ink); }
.levels-diagnostic span, .levels-diagnostic strong { display: block; }
.levels-diagnostic span { color: var(--signal); font-size: 8px; font-weight: 720; letter-spacing: .1em; text-transform: uppercase; }
.levels-diagnostic strong { margin-top: 6px; font-size: 12px; font-weight: 620; }
.levels-diagnostic p { margin: 0; color: rgba(255, 255, 255, .58); font-size: 10px; line-height: 1.55; }
.levels-diagnostic a { min-height: 42px; display: inline-flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 14px; color: var(--ink); background: var(--signal); border-radius: 6px; font-size: 9px; font-weight: 720; white-space: nowrap; }
.levels-diagnostic a:hover { color: white; background: var(--violet); }
.levels-note { max-width: 760px; margin: 18px 0 0; color: var(--muted); font-size: 9px; line-height: 1.65; }

.score-section { background: white; }
.score-layout { display: grid; grid-template-columns: .72fr 1.28fr; align-items: start; gap: clamp(60px, 8vw, 120px); }
.score-copy { position: sticky; top: 116px; }
.score-copy > p:not(.section-kicker, .score-source) { max-width: 510px; margin: 30px 0 0; color: var(--ink-soft); font-size: 14px; line-height: 1.76; }
.score-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 38px; background: var(--line); border: 1px solid var(--line); }
.score-facts > div { min-height: 105px; padding: 19px 15px; background: var(--paper); }
.score-facts strong, .score-facts span { display: block; }
.score-facts strong { color: var(--violet); font-size: 28px; font-weight: 720; letter-spacing: -.05em; }
.score-facts span { max-width: 95px; margin-top: 8px; color: var(--muted); font-size: 9px; line-height: 1.45; }
.score-source { max-width: 520px; margin: 22px 0 0; color: var(--muted); font-size: 9px; line-height: 1.65; }
.score-source a { color: var(--violet); text-decoration: underline; text-underline-offset: 3px; }
.score-diagnostic-link { max-width: 520px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 5px 20px; margin-top: 22px; padding: 16px 17px; color: white; background: var(--violet); border-radius: 8px; transition: transform .2s ease, background .2s ease; }
.score-diagnostic-link:hover { background: var(--violet-deep); transform: translateY(-2px); }
.score-diagnostic-link span { color: var(--signal); font-size: 7px; font-weight: 720; letter-spacing: .1em; text-transform: uppercase; }
.score-diagnostic-link strong { grid-column: 1; font-size: 11px; font-weight: 620; line-height: 1.45; }
.score-diagnostic-link i { grid-column: 2; grid-row: 1 / 3; font-size: 20px; font-style: normal; }
.score-calculator { color: white; background: var(--ink); border: 1px solid var(--ink); border-radius: 14px; box-shadow: 14px 14px 0 var(--violet-pale); overflow: hidden; }
.score-calculator-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 25px 27px; border-bottom: 1px solid var(--dark-line); }
.score-calculator-head small, .score-calculator-head strong { display: block; }
.score-calculator-head small { margin-bottom: 5px; color: rgba(255, 255, 255, .42); font-size: 8px; letter-spacing: .12em; text-transform: uppercase; }
.score-calculator-head strong { font-size: 20px; font-weight: 620; letter-spacing: -.03em; }
.score-calculator-head button, .score-preset { padding: 8px 10px; color: rgba(255, 255, 255, .65); background: transparent; border: 1px solid var(--dark-line); border-radius: 6px; font-size: 9px; cursor: pointer; }
.score-calculator-head button:hover, .score-preset:hover { color: var(--ink); background: var(--signal); border-color: var(--signal); }
.score-part { padding: 25px 27px 27px; border-bottom: 1px solid var(--dark-line); }
.score-part-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 17px; }
.score-part-title span { font-size: 11px; font-weight: 700; }
.score-part-title small { color: rgba(255, 255, 255, .4); font-size: 8px; }
.score-task-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 7px; }
.score-task { min-width: 0; aspect-ratio: 1; display: grid; place-content: center; gap: 3px; padding: 0; color: rgba(255, 255, 255, .77); background: #211f25; border: 1px solid var(--dark-line); border-radius: 8px; cursor: pointer; transition: color .18s ease, background .18s ease, transform .18s ease; }
.score-task:hover { transform: translateY(-2px); border-color: rgba(216, 255, 87, .55); }
.score-task[aria-pressed="true"] { color: var(--ink); background: var(--signal); border-color: var(--signal); }
.score-task span { font-size: 12px; font-weight: 720; }
.score-task small { color: inherit; font-size: 7px; opacity: .58; }
.score-preset { margin-top: 12px; }
.score-steppers { display: grid; grid-template-columns: repeat(7, 1fr); gap: 7px; }
.score-stepper { min-width: 0; padding: 11px 6px 9px; background: #211f25; border: 1px solid var(--dark-line); border-radius: 8px; text-align: center; }
.score-stepper > span, .score-stepper > small { display: block; }
.score-stepper > span { margin-bottom: 9px; color: rgba(255, 255, 255, .65); font-size: 9px; font-weight: 720; }
.score-stepper > div { display: grid; grid-template-columns: 20px 1fr 20px; align-items: center; gap: 2px; }
.score-stepper button { width: 20px; height: 20px; display: grid; place-items: center; padding: 0; color: white; background: transparent; border: 1px solid var(--dark-line); border-radius: 5px; font-size: 12px; cursor: pointer; }
.score-stepper button:hover { color: var(--ink); background: var(--signal); }
.score-stepper output { font-size: 14px; font-weight: 720; }
.score-stepper > small { margin-top: 7px; color: rgba(255, 255, 255, .34); font-size: 7px; }
.score-result { display: grid; grid-template-columns: 112px 1fr; align-items: center; gap: 25px; padding: 27px; background: var(--violet); }
.score-ring { --score-angle: 0deg; width: 110px; height: 110px; display: grid; place-items: center; background: conic-gradient(var(--signal) var(--score-angle), rgba(255, 255, 255, .15) 0); border-radius: 50%; transition: background .25s ease; }
.score-ring::before { content: ""; grid-area: 1 / 1; width: 84px; height: 84px; background: var(--violet); border-radius: 50%; }
.score-ring > div { z-index: 1; grid-area: 1 / 1; text-align: center; }
.score-ring strong, .score-ring span { display: block; }
.score-ring strong { font-size: 34px; line-height: 1; letter-spacing: -.06em; }
.score-ring span { margin-top: 4px; color: rgba(255, 255, 255, .56); font-size: 8px; }
.score-result-copy small, .score-result-copy strong { display: block; }
.score-result-copy small { color: var(--signal); font-size: 8px; letter-spacing: .08em; text-transform: uppercase; }
.score-result-copy strong { margin-top: 7px; font-size: 22px; font-weight: 620; line-height: 1.15; letter-spacing: -.035em; }
.score-result-copy p { max-width: 390px; margin: 10px 0 0; color: rgba(255, 255, 255, .55); font-size: 8px; line-height: 1.55; }

.process-section { color: white; background: var(--ink); }
.process-section .section-kicker span { background: var(--signal); }
.process-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: clamp(60px, 9vw, 150px); }
.process-sticky { align-self: start; position: sticky; top: 120px; }
.process-sticky > p:last-child { max-width: 430px; margin: 28px 0 0; color: rgba(255, 255, 255, .53); font-size: 14px; line-height: 1.75; }
.process-list { margin: 0; padding: 0; border-top: 1px solid var(--dark-line); list-style: none; }
.process-list li { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 35px 0; border-bottom: 1px solid var(--dark-line); }
.process-list li > span { color: var(--signal); font-size: 10px; font-weight: 700; }
.process-list h3 { margin: -7px 0 0; font-size: clamp(25px, 2.3vw, 34px); font-weight: 580; letter-spacing: -.035em; }
.process-list p { max-width: 520px; margin: 14px 0 0; color: rgba(255, 255, 255, .5); font-size: 13px; line-height: 1.72; }

.pricing-section { color: white; background: #211f25; }
.pricing-section .section-kicker span { background: var(--signal); }
.pricing-heading { display: grid; grid-template-columns: 1.15fr .85fr; align-items: end; gap: 70px; }
.pricing-heading > p { max-width: 480px; margin: 0 0 7px; color: rgba(255, 255, 255, .58); font-size: 14px; line-height: 1.72; }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 58px; background: rgba(255, 255, 255, .18); border: 1px solid rgba(255, 255, 255, .18); }
.price-card { min-width: 0; min-height: 520px; display: flex; flex-direction: column; padding: 34px 36px 32px; }
.price-card-group { background: #2a272e; }
.price-card-personal { color: white; background: var(--violet); }
.price-card-top { display: flex; align-items: center; justify-content: space-between; gap: 22px; padding-bottom: 24px; border-bottom: 1px solid rgba(255, 255, 255, .18); }
.price-card-top > span { color: var(--signal); font-size: 9px; font-weight: 720; letter-spacing: .11em; text-transform: uppercase; }
.price-card-top small { max-width: 185px; color: rgba(255, 255, 255, .48); font-size: 8px; line-height: 1.5; text-align: right; }
.price-card h3 { margin: 48px 0 0; font-size: clamp(32px, 3vw, 46px); font-weight: 630; letter-spacing: -.045em; }
.price-value { display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px 15px; margin-top: 14px; }
.price-value strong { white-space: nowrap; font-size: clamp(39px, 4.1vw, 62px); font-weight: 690; line-height: 1; letter-spacing: -.065em; }
.price-value span { color: rgba(255, 255, 255, .52); font-size: 10px; }
.price-card > p { max-width: 510px; margin: 24px 0 0; color: rgba(255, 255, 255, .6); font-size: 12px; line-height: 1.7; }
.price-options, .price-personal-note { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 28px; }
.price-options span, .price-personal-note span { padding: 8px 10px; color: rgba(255, 255, 255, .72); border: 1px solid rgba(255, 255, 255, .21); border-radius: 999px; font-size: 8px; font-weight: 650; }
.price-card > a { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: auto; padding-top: 24px; color: white; border-top: 1px solid rgba(255, 255, 255, .18); font-size: 11px; font-weight: 690; }
.price-card > a:hover { color: var(--signal); }
.price-included { display: grid; grid-template-columns: .55fr 1.45fr; gap: 44px; margin-top: 30px; padding-top: 28px; border-top: 1px solid rgba(255, 255, 255, .24); }
.price-included > strong { color: var(--signal); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.price-included ul { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 34px; margin: 0; padding: 0; list-style: none; }
.price-included li { position: relative; padding-left: 18px; color: rgba(255, 255, 255, .7); font-size: 11px; line-height: 1.55; }
.price-included li::before { content: "+"; position: absolute; left: 0; color: var(--signal); font-weight: 800; }

.platform-section { color: var(--ink); background: var(--paper-cool); }
.platform-heading { display: grid; grid-template-columns: 1.15fr .85fr; align-items: end; gap: 70px; margin-bottom: 38px; }
.platform-heading > p { max-width: 510px; margin: 0 0 7px; color: var(--ink-soft); font-size: 15px; line-height: 1.72; }
.platform-preview-label { display: flex; align-items: center; gap: 9px; margin-bottom: 13px; color: var(--ink-soft); font-size: 9px; font-weight: 680; letter-spacing: .11em; text-transform: uppercase; }
.platform-preview-label span { width: 8px; height: 8px; background: var(--signal); border: 1px solid var(--ink); border-radius: 50%; box-shadow: 0 0 0 4px rgba(216, 255, 87, .45); }
.platform-demo { display: grid; grid-template-columns: 92px minmax(0, 1fr); min-height: 590px; color: var(--ink); background: #f8f8f7; border: 1px solid var(--ink); border-radius: 13px; box-shadow: 14px 14px 0 rgba(104, 65, 227, .18); overflow: hidden; }
.demo-sidebar { display: flex; flex-direction: column; align-items: stretch; gap: 8px; padding: 19px 12px; color: rgba(255, 255, 255, .55); background: var(--ink); }
.demo-logo { width: 40px; height: 40px; display: grid; place-items: center; margin: 0 auto 14px; color: white; border: 1px solid rgba(255, 255, 255, .3); border-radius: 8px; font-size: 14px; font-weight: 760; }
.demo-sidebar button { display: grid; place-items: center; gap: 3px; padding: 8px 3px; color: rgba(255, 255, 255, .54); background: transparent; border: 0; border-radius: 8px; cursor: pointer; }
.demo-sidebar button > span { font-size: 14px; }
.demo-sidebar button small { font-size: 7px; }
.demo-sidebar button:hover { color: white; background: rgba(255, 255, 255, .08); }
.demo-sidebar button.active { color: var(--ink); background: var(--signal); }
.demo-body { min-width: 0; padding: 31px 36px; }
.demo-top { display: flex; align-items: center; justify-content: space-between; }
.demo-top small, .demo-top strong { display: block; }
.demo-top small { margin-bottom: 4px; color: var(--muted); font-size: 8px; letter-spacing: .1em; text-transform: uppercase; }
.demo-top strong { font-size: 25px; font-weight: 650; letter-spacing: -.035em; }
.demo-avatar { width: 39px; height: 39px; display: grid; place-items: center; color: white; background: var(--violet); border-radius: 8px; font-size: 12px; font-weight: 750; }
.demo-screen { margin-top: 22px; animation: demo-screen-in .22s ease both; }
.demo-screen[hidden] { display: none; }
@keyframes demo-screen-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
.demo-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 11px; }
.demo-stats > div { min-height: 108px; padding: 16px; background: white; border: 1px solid #dedce2; border-radius: 9px; }
.demo-stats span, .demo-stats strong, .demo-stats small { display: block; }
.demo-stats span { color: var(--muted); font-size: 8px; }
.demo-stats strong { margin-top: 8px; color: var(--violet); font-size: 24px; font-weight: 680; letter-spacing: -.04em; }
.demo-stats small { margin-top: 7px; color: var(--muted); font-size: 8px; }
.demo-stats i { display: block; height: 4px; margin-top: 10px; background: #eceaef; border-radius: 3px; overflow: hidden; }
.demo-stats i b { display: block; width: 78%; height: 100%; background: var(--violet); }
.demo-content { display: grid; grid-template-columns: 1.45fr .75fr; gap: 11px; margin-top: 11px; }
.demo-plan, .demo-calendar { min-height: 270px; padding: 18px; background: white; border: 1px solid #dedce2; border-radius: 9px; }
.demo-title { display: flex; align-items: center; justify-content: space-between; }
.demo-title strong { font-size: 11px; }
.demo-title span { color: var(--muted); font-size: 8px; }
.demo-plan ul { margin: 15px 0 0; padding: 0; list-style: none; }
.demo-plan li { display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 10px; min-height: 62px; padding: 10px 0; border-top: 1px solid #ebe9ed; }
.demo-plan li > i { width: 29px; height: 29px; display: grid; place-items: center; color: var(--violet); background: #eee9ff; border-radius: 6px; font-size: 8px; font-style: normal; font-weight: 750; }
.demo-plan li > i.done { color: #1e4e00; background: var(--signal); }
.demo-plan li strong, .demo-plan li small { display: block; }
.demo-plan li strong { font-size: 9px; }
.demo-plan li small { margin-top: 4px; color: var(--muted); font-size: 8px; }
.demo-plan li em { color: var(--violet); font-size: 8px; font-style: normal; font-weight: 750; }
.demo-plan li button { padding: 7px 9px; color: white; background: var(--violet); border: 0; border-radius: 5px; font-size: 8px; font-weight: 700; cursor: pointer; }
.demo-plan li button:hover { color: var(--ink); background: var(--signal); }
.mini-calendar { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-top: 24px; text-align: center; }
.mini-calendar b { color: var(--muted); font-size: 7px; }
.mini-calendar span { padding: 7px 2px; color: var(--ink-soft); border-radius: 4px; font-size: 8px; }
.mini-calendar .lesson-day { color: white; background: var(--violet); }
.demo-calendar > p { display: flex; align-items: center; gap: 7px; margin: 22px 0 0; color: var(--muted); font-size: 8px; }
.demo-calendar > p i { width: 7px; height: 7px; background: var(--signal); border: 1px solid var(--ink); border-radius: 50%; }
.demo-task-head, .demo-library-head, .demo-progress-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.demo-task-head span, .demo-task-head strong, .demo-library-head span, .demo-library-head strong, .demo-progress-head span, .demo-progress-head strong { display: block; }
.demo-task-head span, .demo-library-head span, .demo-progress-head span { margin-bottom: 5px; color: var(--muted); font-size: 8px; }
.demo-task-head strong, .demo-library-head strong, .demo-progress-head strong { font-size: 18px; font-weight: 650; letter-spacing: -.03em; }
.demo-task-head em, .demo-library-head em, .demo-progress-head em { color: var(--violet); font-size: 8px; font-style: normal; font-weight: 720; }
.demo-problem { max-width: 650px; margin: 26px auto 0; padding: 25px 28px; background: white; border: 1px solid #dedce2; border-radius: 10px; }
.demo-problem > p { margin: 0; color: var(--ink-soft); font-size: 10px; }
.demo-formula { margin: 28px 0 31px; font: 570 38px/1.2 "Onest Math", "Onest", sans-serif; text-align: center; }
.demo-formula sup { font-size: .55em; }
.demo-problem label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 8px; }
.demo-answer-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.demo-answer-row input { min-width: 0; height: 43px; padding: 0 13px; color: var(--ink); background: #f7f6f3; border: 1px solid var(--line); border-radius: 7px; font: 650 13px/1 "Onest", sans-serif; outline: 0; }
.demo-answer-row input:focus { border-color: var(--violet); box-shadow: 0 0 0 3px rgba(104, 65, 227, .12); }
.demo-answer-row button { padding: 0 17px; color: white; background: var(--violet); border: 0; border-radius: 7px; font-size: 9px; font-weight: 700; cursor: pointer; }
.demo-answer-row button:hover { color: var(--ink); background: var(--signal); }
.demo-feedback { margin-top: 12px; padding: 10px 12px; color: var(--muted); background: #f5f3fa; border-radius: 6px; font-size: 8px; line-height: 1.5; }
.demo-feedback.success { color: #285800; background: #efffc1; }
.demo-feedback.error { color: #8d2241; background: #fff0f4; }
.demo-task-actions { display: flex; justify-content: space-between; gap: 20px; margin-top: 15px; }
.demo-task-actions button { padding: 0; color: var(--violet); background: transparent; border: 0; font-size: 8px; font-weight: 700; cursor: pointer; }
.demo-task-actions span { color: var(--muted); font-size: 8px; }
.demo-library { display: grid; gap: 8px; margin-top: 16px; }
.demo-library article { background: white; border: 1px solid #dedce2; border-radius: 8px; overflow: hidden; }
.demo-library article > button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 14px 17px; text-align: left; background: white; border: 0; cursor: pointer; }
.demo-library button small, .demo-library button strong { display: block; }
.demo-library button small { margin-bottom: 4px; color: var(--violet); font-size: 7px; text-transform: uppercase; }
.demo-library button strong { font-size: 10px; }
.demo-library button i { width: 25px; height: 25px; display: grid; place-items: center; flex: 0 0 auto; background: var(--paper-cool); border-radius: 5px; font-size: 13px; font-style: normal; }
.demo-library article > p { margin: 0; padding: 0 17px 14px; color: var(--ink-soft); font-size: 9px; line-height: 1.6; }
.demo-chart { height: 245px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: end; gap: 16px; margin-top: 18px; padding: 23px 24px 17px; background: white; border: 1px solid #dedce2; border-radius: 9px; }
.demo-chart > div { height: 100%; display: grid; grid-template-rows: auto 1fr auto; align-items: end; gap: 7px; text-align: center; }
.demo-chart span, .demo-chart small { color: var(--muted); font-size: 7px; }
.demo-chart i { width: 100%; display: block; align-self: end; background: var(--violet-pale); border-radius: 5px 5px 2px 2px; }
.demo-chart > div:nth-child(1) i { height: 54%; }
.demo-chart > div:nth-child(2) i { height: 62%; }
.demo-chart > div:nth-child(3) i { height: 71%; }
.demo-chart > div:nth-child(4) i { height: 78%; }
.demo-chart .current i { background: var(--violet); }
.demo-chart .current span { color: var(--violet); font-weight: 750; }
.demo-topic-progress { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 10px; }
.demo-topic-progress > div { display: grid; grid-template-columns: 1fr auto; gap: 7px; padding: 12px; background: white; border: 1px solid #dedce2; border-radius: 8px; }
.demo-topic-progress span { color: var(--ink-soft); font-size: 7px; }
.demo-topic-progress strong { color: var(--violet); font-size: 8px; }
.demo-topic-progress i { grid-column: 1 / -1; height: 3px; display: block; background: #eceaef; border-radius: 2px; overflow: hidden; }
.demo-topic-progress b { height: 100%; display: block; background: var(--violet); }
.demo-topic-progress > div:nth-child(1) b { width: 86%; }
.demo-topic-progress > div:nth-child(2) b { width: 74%; }
.demo-topic-progress > div:nth-child(3) b { width: 61%; }
.platform-features { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 42px; border-top: 1px solid rgba(21, 20, 25, .25); }
.platform-features span { padding: 17px 12px 0 0; color: var(--ink-soft); font-size: 11px; }
.platform-features span::before { content: "+"; margin-right: 8px; color: var(--violet); font-weight: 800; }

.principles-section { background: white; }
.principles-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: clamp(60px, 9vw, 145px); }
.principles-grid > div:first-child { align-self: start; position: sticky; top: 120px; }
.principle-stack { border-top: 1px solid var(--ink); }
.principle-stack article { display: grid; grid-template-columns: 48px .9fr 1.1fr; gap: 25px; align-items: start; padding: 31px 0; border-bottom: 1px solid var(--line); }
.principle-stack article > span { color: var(--violet); font-size: 10px; font-weight: 750; }
.principle-stack h3 { margin: -5px 0 0; font-size: 21px; font-weight: 620; line-height: 1.24; letter-spacing: -.03em; }
.principle-stack p { margin: -2px 0 0; color: var(--ink-soft); font-size: 13px; line-height: 1.7; }

.results-section { padding: 112px 0 96px; color: white; background: var(--violet); }
.results-section .section-kicker span { background: var(--signal); }
.results-heading { display: grid; grid-template-columns: 1.15fr .85fr; align-items: end; gap: 70px; }
.results-heading > p { max-width: 470px; margin: 0 0 7px; color: rgba(255, 255, 255, .65); font-size: 14px; line-height: 1.72; }
.results-row { display: grid; grid-template-columns: repeat(6, 1fr); margin-top: 58px; border-top: 1px solid rgba(255, 255, 255, .35); border-bottom: 1px solid rgba(255, 255, 255, .2); }
.results-row > div { min-height: 190px; padding: 28px 24px 0; border-left: 1px solid rgba(255, 255, 255, .2); }
.results-row > div:first-child { padding-left: 0; border-left: 0; }
.results-row strong { display: block; white-space: nowrap; font-size: clamp(42px, 4.4vw, 68px); font-weight: 680; letter-spacing: -.065em; line-height: .95; }
.results-row > div:nth-child(3) strong, .results-row > div:nth-child(5) strong { font-size: clamp(36px, 3.7vw, 56px); }
.results-row sup { color: var(--signal); font-size: .42em; vertical-align: top; }
.results-row span { display: block; max-width: 170px; margin-top: 20px; color: rgba(255, 255, 255, .65); font-size: 10px; line-height: 1.55; }
.result-cases { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 56px; background: rgba(255, 255, 255, .22); border: 1px solid rgba(255, 255, 255, .22); }
.result-cases article { min-width: 0; display: grid; grid-template-columns: 155px 1fr; align-items: center; gap: 30px; min-height: 250px; padding: 31px; background: rgba(58, 30, 145, .72); }
.result-case-score strong, .result-case-score span { display: block; }
.result-case-score strong { color: var(--signal); font-size: clamp(66px, 7vw, 100px); font-weight: 680; line-height: .86; letter-spacing: -.075em; }
.result-case-score span { margin-top: 10px; color: rgba(255, 255, 255, .48); font-size: 10px; }
.result-cases small { color: var(--signal); font-size: 8px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.result-cases h3 { margin: 12px 0 0; font-size: 25px; font-weight: 620; line-height: 1.15; letter-spacing: -.035em; }
.result-cases p { margin: 15px 0 0; color: rgba(255, 255, 255, .62); font-size: 11px; line-height: 1.65; }
.student-voices { display: grid; grid-template-columns: .72fr 1fr 1fr; margin-top: 56px; border-top: 1px solid rgba(255, 255, 255, .26); border-bottom: 1px solid rgba(255, 255, 255, .18); }
.student-voices-heading, .student-voices blockquote { min-width: 0; margin: 0; padding: 29px 30px 31px; }
.student-voices-heading { padding-left: 0; }
.student-voices-heading span, .student-voices-heading strong { display: block; }
.student-voices-heading span { color: var(--signal); font-size: 8px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.student-voices-heading strong { max-width: 210px; margin-top: 18px; font-size: 24px; font-weight: 620; line-height: 1.12; letter-spacing: -.035em; }
.student-voices blockquote { border-left: 1px solid rgba(255, 255, 255, .18); }
.student-voices blockquote p { margin: 0; font-size: 16px; font-weight: 500; line-height: 1.55; letter-spacing: -.018em; }
.student-voices blockquote footer { margin-top: 25px; color: rgba(255, 255, 255, .5); font-size: 9px; line-height: 1.5; }
.results-caption { max-width: 720px; margin: 36px 0 0; color: rgba(255, 255, 255, .5); font-size: 10px; line-height: 1.7; }

.start-section { background: var(--paper); }
.section-intro.centered { display: block; margin-bottom: 64px; text-align: left; }
.section-intro.centered .section-kicker { margin-bottom: 28px; }
.start-steps { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); list-style: none; }
.start-steps li { min-height: 240px; padding: 29px 26px; }
.start-steps li + li { border-left: 1px solid var(--line); }
.start-steps span { color: var(--violet); font-size: 10px; font-weight: 750; }
.start-steps strong { display: block; margin-top: 53px; font-size: 22px; font-weight: 630; letter-spacing: -.025em; }
.start-steps p { margin: 14px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.67; }

.contact-section { position: relative; padding: 122px 0; color: white; background: var(--ink); overflow: hidden; }
.contact-section::before { content: ""; position: absolute; inset: 0 0 auto; height: 7px; background: linear-gradient(90deg, var(--violet) 0 66%, var(--signal) 66%); }
.contact-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; align-items: end; column-gap: 60px; text-align: left; }
.contact-inner .section-kicker { grid-column: 1 / -1; }
.contact-inner h2 { max-width: 850px; }
.contact-inner p:not(.section-kicker) { max-width: 640px; margin: 28px 0 0; color: rgba(255, 255, 255, .56); font-size: 15px; line-height: 1.72; }
.public-button.light { grid-column: 2; grid-row: 2 / span 2; min-width: 220px; margin: 0 0 6px; color: var(--ink); background: var(--signal); border-color: var(--signal); }
.public-button.light:hover { color: white; background: var(--violet); border-color: var(--violet); }
.contact-meta { display: flex; flex-wrap: wrap; gap: 9px 22px; margin-top: 18px; }
.contact-meta a { color: rgba(255, 255, 255, .48); font-size: 10px; text-decoration: underline; text-decoration-color: rgba(255, 255, 255, .2); text-underline-offset: 4px; }
.contact-meta a:hover { color: var(--signal); }
.contact-symbol { position: absolute; right: -35px; bottom: -105px; color: rgba(255, 255, 255, .035); font: 700 360px/1 "Onest Math", sans-serif; }

.trial-hero { min-height: 790px; padding: 166px 0 94px; color: var(--ink); background: var(--paper); border-bottom: 1px solid var(--ink); }
.trial-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(390px, .72fr); align-items: center; gap: clamp(60px, 8vw, 130px); }
.trial-back { display: inline-flex; margin-bottom: 52px; color: var(--muted); font-size: 9px; font-weight: 650; letter-spacing: .06em; text-transform: uppercase; }
.trial-back:hover { color: var(--violet); }
.trial-hero h1 { max-width: 760px; margin: 0; font-size: clamp(65px, 7.8vw, 112px); font-weight: 680; line-height: .88; letter-spacing: -.07em; }
.trial-hero h1 em { color: var(--violet); font-style: normal; }
.trial-hero-copy > p:last-of-type { max-width: 650px; margin: 34px 0 0; color: var(--ink-soft); font-size: 16px; line-height: 1.7; }
.trial-hero-actions { display: flex; align-items: center; gap: 22px; margin-top: 37px; }
.trial-hero-actions > span { color: var(--muted); font-size: 8px; line-height: 1.5; }
.trial-passport { min-height: 510px; display: flex; flex-direction: column; padding: 27px; color: white; background: var(--ink); border-radius: 14px; box-shadow: 16px 16px 0 var(--violet-pale); }
.trial-passport-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; color: var(--signal); border-bottom: 1px solid var(--dark-line); font-size: 8px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.trial-passport-head b { width: 31px; height: 31px; display: grid; place-items: center; color: var(--ink); background: var(--signal); border-radius: 50%; font-size: 8px; }
.trial-passport-title { margin-top: 31px; }
.trial-passport-title small, .trial-passport-title strong { display: block; }
.trial-passport-title small { color: rgba(255, 255, 255, .45); font-size: 8px; letter-spacing: .1em; text-transform: uppercase; }
.trial-passport-title strong { margin-top: 7px; font-size: 35px; font-weight: 630; letter-spacing: -.045em; }
.trial-passport dl { display: grid; grid-template-columns: repeat(3, 1fr); margin: 30px 0 0; border: 1px solid var(--dark-line); }
.trial-passport dl > div { padding: 16px 12px; }
.trial-passport dl > div + div { border-left: 1px solid var(--dark-line); }
.trial-passport dt { color: var(--signal); font-size: 23px; font-weight: 690; }
.trial-passport dd { margin: 5px 0 0; color: rgba(255, 255, 255, .46); font-size: 7px; }
.trial-passport ol { display: grid; gap: 0; margin: 27px 0 0; padding: 0; list-style: none; }
.trial-passport li { display: grid; grid-template-columns: 28px 1fr; align-items: center; gap: 9px; min-height: 42px; color: rgba(255, 255, 255, .72); border-bottom: 1px solid var(--dark-line); font-size: 9px; }
.trial-passport li span { color: var(--signal); font-size: 7px; font-weight: 750; }
.trial-passport > p { margin: auto 0 0; padding-top: 24px; color: rgba(255, 255, 255, .35); font-size: 7px; line-height: 1.55; }

.trial-workspace { padding: 112px 0; background: white; }
.trial-workspace[hidden], .trial-results[hidden] { display: none; }
.trial-workspace-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; padding-bottom: 22px; border-bottom: 1px solid var(--ink); }
.trial-workspace-head span, .trial-workspace-head strong { display: block; }
.trial-workspace-head span { margin-bottom: 6px; color: var(--violet); font-size: 8px; font-weight: 720; letter-spacing: .11em; text-transform: uppercase; }
.trial-workspace-head strong { font-size: 25px; font-weight: 630; letter-spacing: -.04em; }
.trial-timer { text-align: right; }
.trial-timer output { font: 650 22px/1 "Onest Math", "Onest", sans-serif; letter-spacing: -.03em; }
.trial-progress { height: 5px; margin-top: 14px; background: #e9e7e2; }
.trial-progress i { width: 12.5%; height: 100%; display: block; background: var(--violet); transition: width .25s ease; }
.trial-nav { display: grid; grid-template-columns: repeat(8, 1fr); gap: 7px; max-width: 630px; margin: 24px 0 0; }
.trial-nav button { height: 42px; color: var(--muted); background: var(--paper); border: 1px solid var(--line); border-radius: 7px; font-size: 10px; font-weight: 700; cursor: pointer; }
.trial-nav button:hover, .trial-nav button.active { color: white; background: var(--violet); border-color: var(--violet); }
.trial-nav button.answered:not(.active) { color: var(--ink); background: var(--signal); border-color: var(--ink); }
.trial-form { margin-top: 44px; }
.trial-task { min-height: 440px; padding: clamp(28px, 5vw, 62px); background: var(--paper); border: 1px solid var(--ink); }
.trial-task[hidden] { display: none; }
.trial-task-hard { background: var(--paper-cool); }
.trial-task-meta { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.trial-task-meta span { color: var(--violet); font-size: 8px; font-weight: 720; letter-spacing: .11em; text-transform: uppercase; }
.trial-task-meta small { color: var(--muted); font-size: 8px; }
.trial-task h2 { margin: 38px 0 0; font-size: clamp(30px, 4vw, 52px); font-weight: 640; letter-spacing: -.05em; }
.trial-task > p { max-width: 900px; margin: 24px 0 0; color: var(--ink-soft); font-size: 16px; line-height: 1.72; }
.trial-task i { font-family: "Onest Math", "Onest", sans-serif; font-style: normal; }
.trial-formula { margin: 34px 0; font: 590 clamp(27px, 4vw, 50px)/1.2 "Onest Math", "Onest", sans-serif; text-align: center; }
.trial-formula sup { font-size: .56em; }
.trial-formula.fraction { width: max-content; max-width: 100%; display: grid; gap: 7px; margin-inline: auto; font-size: clamp(21px, 3vw, 38px); text-align: center; }
.trial-formula.fraction i { height: 2px; background: var(--ink); }
.trial-hint { max-width: 860px; margin-top: 28px; color: var(--ink-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trial-hint summary { padding: 13px 0; color: var(--violet); font-size: 9px; font-weight: 700; cursor: pointer; }
.trial-hint p { margin: 0; padding: 0 0 14px; font-size: 11px; line-height: 1.65; }
.trial-task > label { max-width: 440px; display: grid; gap: 8px; margin-top: 30px; color: var(--muted); font-size: 8px; font-weight: 680; letter-spacing: .08em; text-transform: uppercase; }
.trial-task input { width: 100%; height: 56px; padding: 0 16px; color: var(--ink); background: white; border: 1px solid var(--line); border-radius: 8px; font: 650 16px/1 "Onest", sans-serif; outline: none; }
.trial-task input:focus { border-color: var(--violet); box-shadow: 0 0 0 4px rgba(104, 65, 227, .12); }
.trial-form-actions { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px; margin-top: 18px; }
.trial-form-actions button { min-height: 48px; padding: 0 18px; border-radius: 7px; font-size: 10px; font-weight: 720; cursor: pointer; }
.trial-secondary { color: var(--ink); background: transparent; border: 1px solid var(--ink); }
.trial-primary { color: white; background: var(--violet); border: 1px solid var(--violet); }
.trial-form-actions button:hover { color: var(--ink); background: var(--signal); border-color: var(--ink); }
.trial-form-actions button:disabled { opacity: .35; cursor: not-allowed; }
.trial-form-actions > span { color: var(--muted); font-size: 8px; text-align: center; }

.trial-results { padding: 112px 0; color: white; background: var(--ink); }
.trial-results-overview { display: grid; grid-template-columns: .55fr 1.45fr; gap: clamp(50px, 8vw, 120px); align-items: center; padding-bottom: 94px; border-bottom: 1px solid var(--dark-line); }
.trial-result-score { aspect-ratio: 1; display: flex; flex-direction: column; justify-content: space-between; padding: 27px; color: var(--ink); background: var(--signal); border-radius: 50%; }
.trial-result-score > span { align-self: center; margin-top: 13%; font-size: 8px; font-weight: 720; letter-spacing: .1em; text-transform: uppercase; }
.trial-result-score > strong { align-self: center; display: flex; align-items: baseline; }
.trial-result-score > strong b { font-size: clamp(72px, 10vw, 132px); font-weight: 700; line-height: .78; letter-spacing: -.09em; }
.trial-result-score > strong small { font-size: 17px; }
.trial-result-score > i { align-self: center; margin-bottom: 12%; font-size: 9px; font-style: normal; }
.trial-result-copy .section-kicker span { background: var(--signal); }
.trial-result-copy h2 { margin: 0; font-size: clamp(47px, 6vw, 83px); font-weight: 660; line-height: .96; letter-spacing: -.06em; }
.trial-result-copy > p:not(.section-kicker) { max-width: 710px; margin: 26px 0 0; color: rgba(255, 255, 255, .6); font-size: 14px; line-height: 1.72; }
.trial-topic-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 34px; }
.trial-topic-summary > div { display: flex; justify-content: space-between; gap: 20px; padding: 11px 13px; background: rgba(255, 255, 255, .06); border: 1px solid var(--dark-line); font-size: 8px; }
.trial-topic-summary b { color: var(--signal); font-weight: 720; }
.trial-solutions-head { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 60px; margin-top: 96px; }
.trial-solutions-head span { color: var(--signal); font-size: 8px; font-weight: 720; letter-spacing: .1em; text-transform: uppercase; }
.trial-solutions-head h2 { margin: 14px 0 0; font-size: clamp(40px, 5vw, 68px); font-weight: 650; line-height: 1; letter-spacing: -.055em; }
.trial-solutions-head > p { margin: 0 0 6px; color: rgba(255, 255, 255, .52); font-size: 12px; line-height: 1.7; }
.trial-solutions { margin-top: 47px; border-top: 1px solid rgba(255, 255, 255, .22); }
.trial-solutions details { border-bottom: 1px solid rgba(255, 255, 255, .22); }
.trial-solutions summary { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; cursor: pointer; list-style: none; }
.trial-solutions summary::-webkit-details-marker { display: none; }
.trial-solutions summary span { font-size: 13px; font-weight: 620; }
.trial-solutions summary b { padding: 6px 9px; border: 1px solid var(--dark-line); border-radius: 999px; font-size: 7px; letter-spacing: .06em; text-transform: uppercase; }
.trial-solutions details.correct summary b { color: var(--signal); border-color: rgba(216, 255, 87, .4); }
.trial-solutions details.incorrect summary b { color: #ff9ab7; border-color: rgba(255, 154, 183, .42); }
.trial-solutions details > .solution-body { max-width: 1100px; padding: 5px 0 42px; }
.trial-solutions details i { font-family: "Onest Math", "Onest", sans-serif; font-style: normal; }
.solution-lead { display: grid; grid-template-columns: 145px 1fr; gap: 22px; align-items: start; padding: 19px 21px; background: var(--violet); border-left: 4px solid var(--signal); }
.solution-lead > span { padding-top: 3px; color: var(--signal); font-size: 8px; font-weight: 740; letter-spacing: .1em; text-transform: uppercase; }
.solution-lead p { margin: 0; color: rgba(255, 255, 255, .8); font-size: 12px; line-height: 1.7; }
.solution-steps { margin: 29px 0 0; padding: 0; border-top: 1px solid var(--dark-line); list-style: none; }
.solution-steps li { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 24px 0; border-bottom: 1px solid var(--dark-line); }
.solution-steps li > span { width: 32px; height: 32px; display: grid; place-items: center; color: var(--ink); background: var(--signal); border-radius: 50%; font-size: 7px; font-weight: 780; }
.solution-steps li strong { display: block; margin: 1px 0 0; color: white; font-size: 13px; font-weight: 650; }
.solution-steps li p { max-width: 860px; margin: 10px 0 0; color: rgba(255, 255, 255, .62); font-size: 12px; line-height: 1.72; }
.solution-formula { width: fit-content; max-width: 100%; margin-top: 13px; padding: 10px 13px; color: white; background: rgba(255, 255, 255, .06); border: 1px solid var(--dark-line); font: 580 15px/1.55 "Onest Math", "Onest", sans-serif; overflow-wrap: anywhere; }
.solution-formula sup, .solution-formula sub { font-size: .68em; }
.solution-formula.solution-fraction { display: grid; gap: 5px; min-width: 260px; text-align: center; }
.solution-fraction i { height: 1px; background: rgba(255, 255, 255, .6); }
.solution-note { display: grid; grid-template-columns: 145px 1fr; gap: 22px; margin-top: 24px; padding: 18px 20px; background: rgba(255, 154, 183, .08); border: 1px solid rgba(255, 154, 183, .22); }
.solution-note > span { padding-top: 2px; color: #ff9ab7; font-size: 8px; font-weight: 740; letter-spacing: .1em; text-transform: uppercase; }
.solution-note p { margin: 0; color: rgba(255, 255, 255, .68); font-size: 11px; line-height: 1.7; }
.solution-note strong { color: white; font-weight: 680; }
.solution-answer { display: flex; align-items: baseline; justify-content: space-between; gap: 30px; margin-top: 20px; padding: 17px 20px; color: var(--ink); background: var(--signal); }
.solution-answer span { font-size: 8px; font-weight: 760; letter-spacing: .12em; text-transform: uppercase; }
.solution-answer strong { font: 700 25px/1 "Onest Math", "Onest", sans-serif; letter-spacing: -.035em; text-align: right; }
.trial-funnel { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px 60px; margin-top: 88px; padding: 40px; color: var(--ink); background: var(--paper); }
.trial-funnel span { color: var(--violet); font-size: 8px; font-weight: 720; letter-spacing: .11em; text-transform: uppercase; }
.trial-funnel h2 { margin: 10px 0 0; font-size: clamp(31px, 4vw, 52px); font-weight: 650; letter-spacing: -.05em; }
.trial-funnel p { max-width: 690px; margin: 16px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.7; }
.trial-funnel > button { grid-column: 2; color: var(--muted); background: transparent; border: 0; font-size: 9px; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.trial-source { max-width: 860px; margin: 27px 0 0; color: rgba(255, 255, 255, .34); font-size: 8px; line-height: 1.65; }

.public-footer { padding: 68px 0 24px; color: white; background: #0d0c0f; }
.footer-grid { width: var(--container); display: grid; grid-template-columns: 1.55fr .8fr 1.05fr .9fr; gap: 50px; margin-inline: auto; }
.footer-brand .public-brand-mark { background: transparent; }
.footer-brand small { color: rgba(255, 255, 255, .38); }
.footer-about p { max-width: 340px; margin: 22px 0 0; color: rgba(255, 255, 255, .42); font-size: 11px; line-height: 1.7; }
.footer-grid nav, .footer-contact { display: flex; flex-direction: column; align-items: flex-start; gap: 11px; }
.footer-grid nav strong, .footer-contact strong { margin-bottom: 8px; color: rgba(255, 255, 255, .85); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; }
.footer-grid nav a, .footer-contact a, .footer-contact span { color: rgba(255, 255, 255, .45); font-size: 11px; line-height: 1.45; }
.footer-grid nav a:hover, .footer-contact a:hover { color: var(--signal); }
.footer-bottom { width: var(--container); display: flex; justify-content: space-between; gap: 25px; margin: 56px auto 0; padding-top: 20px; color: rgba(255, 255, 255, .27); border-top: 1px solid rgba(255, 255, 255, .11); font-size: 9px; }

.legal-page { background: var(--paper); }
.legal-hero { padding: 164px 0 82px; color: white; background: var(--ink); border-bottom: 7px solid var(--violet); }
.legal-hero-inner h1 { max-width: 900px; font-size: clamp(46px, 6vw, 78px); line-height: .98; }
.legal-hero-inner > p:last-child { margin: 25px 0 0; color: rgba(255, 255, 255, .5); font-size: 11px; }
.legal-layout { display: grid; grid-template-columns: 230px minmax(0, 760px); justify-content: center; gap: 90px; padding-top: 88px; padding-bottom: 120px; }
.legal-layout-short { min-height: 720px; }
.legal-toc { align-self: start; position: sticky; top: 105px; display: flex; flex-direction: column; gap: 11px; padding: 20px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.legal-toc strong { margin-bottom: 5px; color: var(--violet); font-size: 9px; letter-spacing: .13em; text-transform: uppercase; }
.legal-toc a { color: var(--ink-soft); font-size: 11px; line-height: 1.4; }
.legal-toc a:hover { color: var(--violet); }
.legal-content section { scroll-margin-top: 100px; padding: 0 0 40px; }
.legal-content section + section { padding-top: 40px; border-top: 1px solid var(--line); }
.legal-content h2 { margin: 0 0 21px; font-size: 29px; font-weight: 650; line-height: 1.2; letter-spacing: -.035em; }
.legal-content p, .legal-content li { color: #4e4c54; font-size: 14px; line-height: 1.82; }
.legal-content p { margin: 0 0 16px; }
.legal-content ul { margin: 0 0 20px; padding-left: 21px; }
.legal-content li { margin: 7px 0; }
.legal-content a { color: var(--violet); text-decoration: underline; text-decoration-color: rgba(104, 65, 227, .3); text-underline-offset: 3px; }
.legal-details { margin: 0; border-top: 1px solid var(--ink); }
.legal-details > div { display: grid; grid-template-columns: 220px 1fr; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.legal-details dt { color: var(--ink-soft); font-size: 11px; }
.legal-details dd { margin: 0; font-size: 13px; font-weight: 650; }
.js [data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 1120px) {
  .public-nav-wrap { grid-template-columns: auto 1fr auto; }
  .public-brand { justify-self: center; }
  .public-menu > a:not(.menu-contact) { display: none; }
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(380px, .82fr); gap: 44px; }
  .hero h1 { font-size: clamp(56px, 6.5vw, 76px); }
  .math-stage { min-height: 520px; }
  .direction-card { min-height: 450px; padding-inline: 25px; }
  .direction-copy { grid-template-columns: 1fr; gap: 16px; padding-block: 27px 22px; }
  .about-profile { grid-template-columns: minmax(280px, .7fr) minmax(0, 1.3fr); }
  .about-heading { grid-column: 1 / -1; display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 40px; }
  .about-heading .section-kicker { grid-column: 1 / -1; margin-bottom: -6px; }
  .about-name { margin: 0 0 6px; }
  .level-card { padding-inline: 24px; }
  .principle-stack article { grid-template-columns: 42px 1fr; }
  .principle-stack p { grid-column: 2; }
  .results-row { grid-template-columns: repeat(3, 1fr); }
  .results-row > div { border-bottom: 1px solid rgba(255, 255, 255, .2); }
  .results-row > div:nth-child(4) { padding-left: 0; border-left: 0; }
  .results-row > div:nth-last-child(-n + 3) { border-bottom: 0; }
  .result-cases article { grid-template-columns: 125px 1fr; gap: 24px; padding: 26px; }
  .footer-grid { grid-template-columns: 1.35fr 1fr 1.15fr; }
  .footer-contact { grid-column: 2 / 4; }
  .trial-hero-grid { grid-template-columns: minmax(0, 1fr) minmax(350px, .75fr); gap: 50px; }
}

@media (max-width: 820px) {
  :root { --container: min(100% - 40px, 680px); }
  body.nav-open { overflow: hidden; }
  .section-space { padding-block: 92px; }
  .public-nav-wrap { grid-template-columns: 1fr auto 1fr; gap: 12px; }
  .portal-entry span { display: none; }
  .public-brand { grid-column: 2; }
  .public-brand small { display: none; }
  .nav-toggle { grid-column: 3; justify-self: end; width: 40px; height: 40px; display: flex; flex-direction: column; justify-content: center; gap: 5px; padding: 10px; background: transparent; border: 0; }
  .nav-toggle > span:not(.sr-only) { width: 20px; height: 1px; display: block; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .public-menu { position: absolute; top: 82px; left: 0; right: 0; height: calc(100vh - 82px); height: calc(100dvh - 82px); display: none; flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0; padding: 15px 20px max(20px, env(safe-area-inset-bottom)); color: var(--ink); background: white; border-bottom: 1px solid var(--ink); box-shadow: 0 18px 30px rgba(21, 20, 25, .08); overflow-y: auto; overscroll-behavior: contain; }
  .public-menu.is-open { display: flex; }
  .public-menu > a:not(.menu-contact) { display: block; padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
  .public-menu .menu-contact { margin-top: 12px; padding: 15px; text-align: center; }
  .hero { padding: 137px 0 86px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 680px; }
  .hero h1 { max-width: 650px; font-size: clamp(52px, 11vw, 78px); }
  .hero-lead { max-width: 600px; }
  .math-stage { max-width: 580px; min-height: auto; margin-top: 10px; box-shadow: 10px 10px 0 var(--violet-pale); }
  .about-profile, .process-grid, .principles-grid { grid-template-columns: 1fr; gap: 54px; }
  .process-grid > * { min-width: 0; }
  .about-heading { grid-column: auto; display: block; }
  .about-name { max-width: 420px; margin-top: 30px; }
  .about-portrait { width: min(100%, 460px); }
  .about-copy { padding-top: 30px; }
  .section-intro, .levels-heading, .pricing-heading, .platform-heading, .results-heading { grid-template-columns: 1fr; gap: 24px; }
  .section-intro .section-kicker { margin-bottom: 0; }
  .direction-layout { grid-template-columns: 1fr; }
  .direction-card, .direction-card:nth-child(even) { min-height: 400px; padding: 28px 24px; border-left: 0; border-bottom: 1px solid var(--line); }
  .direction-card:nth-last-child(2) { border-bottom: 1px solid var(--line); }
  .direction-card:last-child { border-bottom: 0; }
  .levels-heading { margin-bottom: 42px; }
  .level-grid { grid-template-columns: 1fr; }
  .level-card { min-height: 350px; }
  .level-card + .level-card { border-top: 1px solid rgba(21, 20, 25, .2); border-left: 0; }
  .level-start { min-height: 0; margin-top: 38px; }
  .score-layout { grid-template-columns: 1fr; gap: 52px; }
  .score-copy { position: static; }
  .score-copy > p:not(.section-kicker, .score-source), .score-source { max-width: 620px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .price-card { min-height: 470px; }
  .price-included { grid-template-columns: 1fr; gap: 22px; }
  .process-sticky, .principles-grid > div:first-child { position: static; }
  .platform-demo { grid-template-columns: 80px minmax(0, 1fr); }
  .demo-body { padding: 28px 25px; }
  .demo-content { grid-template-columns: 1fr; }
  .demo-calendar { min-height: 185px; }
  .demo-topic-progress { grid-template-columns: 1fr; }
  .results-heading > p { max-width: 620px; }
  .results-row { grid-template-columns: 1fr 1fr; }
  .results-row > div:nth-child(4) { padding-left: 24px; border-left: 1px solid rgba(255, 255, 255, .2); }
  .results-row > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .results-row > div { border-bottom: 1px solid rgba(255, 255, 255, .2); }
  .results-row > div:nth-last-child(-n + 3) { border-bottom: 1px solid rgba(255, 255, 255, .2); }
  .results-row > div:nth-last-child(-n + 2) { border-bottom: 0; }
  .result-cases { grid-template-columns: 1fr; }
  .student-voices { grid-template-columns: 1fr 1fr; }
  .student-voices-heading { grid-column: 1 / -1; padding-left: 0; }
  .student-voices blockquote:first-of-type { padding-left: 0; border-left: 0; }
  .start-steps { grid-template-columns: 1fr 1fr; }
  .start-steps li:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .start-steps li:nth-child(4) { border-top: 1px solid var(--line); }
  .contact-inner { grid-template-columns: 1fr; }
  .contact-symbol { display: none; }
  .public-button.light { grid-column: 1; grid-row: auto; justify-self: start; margin-top: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
  .footer-contact { grid-column: auto; }
  .trial-hero { min-height: auto; padding: 140px 0 90px; }
  .trial-hero-grid { grid-template-columns: 1fr; gap: 58px; }
  .trial-hero-copy { max-width: 700px; }
  .trial-passport { width: min(100%, 580px); min-height: 480px; }
  .trial-workspace { padding-block: 90px; }
  .trial-results-overview { grid-template-columns: minmax(240px, .55fr) 1fr; gap: 50px; }
  .trial-solutions-head { grid-template-columns: 1fr; gap: 24px; }
  .trial-funnel { grid-template-columns: 1fr; }
  .trial-funnel .public-button { justify-self: start; }
  .trial-funnel > button { grid-column: 1; justify-self: start; }
  .legal-layout { grid-template-columns: 1fr; gap: 42px; padding-top: 64px; }
  .legal-toc { position: static; }
}

@media (max-width: 560px) {
  :root { --container: calc(100% - 28px); }
  .section-space { padding-block: 76px; }
  .public-header { height: 72px; }
  .public-menu { top: 72px; height: calc(100vh - 72px); height: calc(100dvh - 72px); }
  .public-brand-mark { width: 36px; height: 36px; }
  .hero { padding-top: 118px; }
  .hero::before { top: 72px; }
  .section-kicker { margin-bottom: 22px; font-size: 8px; }
  .hero h1 { font-size: clamp(44px, 13.5vw, 64px); letter-spacing: -.065em; }
  .hero-lead { margin-top: 25px; font-size: 15px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; margin-top: 30px; }
  .public-button { width: 100%; }
  .hero-facts { margin-top: 48px; }
  .hero-facts > div { padding-right: 8px; }
  .hero-facts > div + div { padding-left: 9px; }
  .hero-facts dt { font-size: 18px; }
  .hero-facts dd { font-size: 8px; }
  .math-stage { padding: 13px; border-radius: 12px; }
  .stage-header { font-size: 7px; }
  .stage-problem { grid-template-columns: 1fr; gap: 6px; padding: 11px 12px; }
  .stage-problem p { font-size: 10px; }
  .derivative-legend { align-items: flex-start; font-size: 7px; }
  .stage-reasoning { grid-template-columns: 1fr; }
  .stage-reasoning > div + div { border-top: 1px solid var(--dark-line); border-left: 0; }
  .stage-reasoning p { font-size: 8px; }
  .section-heading h2, .section-intro h2, .levels-heading h2, .score-copy h2, .process-sticky h2, .pricing-heading h2, .platform-heading h2, .principles-grid h2, .results-heading h2, .contact-inner h2 { font-size: 40px; }
  .about-photo-shell { box-shadow: 9px 9px 0 var(--violet-pale); }
  .about-columns { grid-template-columns: 1fr; gap: 20px; }
  .large-copy { font-size: 20px; }
  .section-intro { margin-bottom: 42px; }
  .direction-card, .direction-card:nth-child(even) { min-height: 0; gap: 0; padding: 22px 16px; }
  .direction-card .card-tag { margin: 0; }
  .direction-card-head { padding-bottom: 16px; }
  .direction-copy { grid-template-columns: 1fr; gap: 13px; padding: 24px 0 22px; }
  .direction-copy p { margin-top: 0; }
  .direction-card h3 { font-size: 26px; }
  .direction-geometry { grid-template-columns: 1fr; }
  .direction-geometry > span { display: none; }
  .direction-foundation > div { padding: 10px 8px; }
  .direction-nodes { grid-template-columns: 1fr 24px 1fr 24px 1fr; }
  .direction-tags { margin-top: 14px; }
  .level-card { min-height: 365px; padding: 24px 20px; }
  .level-start { min-height: 0; margin-top: 28px; }
  .level-card h3 { font-size: 28px; }
  .level-route { gap: 8px; }
  .levels-diagnostic { grid-template-columns: 1fr; gap: 17px; padding: 22px 18px; }
  .levels-diagnostic a { width: 100%; }
  .process-list li { grid-template-columns: 38px 1fr; gap: 11px; }
  .process-list h3 { font-size: 25px; }
  .price-card { min-height: 445px; padding: 26px 20px 24px; }
  .price-card-top { align-items: flex-start; }
  .price-card h3 { margin-top: 38px; }
  .price-value strong { white-space: normal; font-size: clamp(38px, 11.5vw, 52px); }
  .price-included ul { grid-template-columns: 1fr; }
  .score-facts > div { min-height: 92px; padding: 15px 11px; }
  .score-calculator { box-shadow: 8px 8px 0 var(--violet-pale); }
  .score-calculator-head, .score-part, .score-result { padding: 20px 16px; }
  .score-task-grid { grid-template-columns: repeat(5, 1fr); }
  .score-steppers { grid-template-columns: repeat(3, 1fr); }
  .score-stepper { padding: 12px 8px 10px; }
  .score-stepper > div { grid-template-columns: 30px 1fr 30px; gap: 5px; }
  .score-stepper button { width: 30px; height: 30px; font-size: 15px; }
  .score-result { grid-template-columns: 88px 1fr; gap: 15px; }
  .score-ring { width: 86px; height: 86px; }
  .score-ring::before { width: 66px; height: 66px; }
  .score-ring strong { font-size: 27px; }
  .score-result-copy strong { font-size: 18px; }
  .platform-demo { grid-template-columns: 1fr; grid-template-rows: auto 1fr; box-shadow: 8px 8px 0 rgba(104, 65, 227, .18); }
  .demo-sidebar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; padding: 8px; }
  .demo-logo { display: none; }
  .demo-sidebar button { grid-template-columns: auto 1fr; justify-content: center; gap: 6px; min-height: 46px; }
  .demo-sidebar button small { font-size: 7px; }
  .demo-body { padding: 20px 14px; }
  .demo-top strong { font-size: 22px; }
  .demo-stats { grid-template-columns: 1fr 1fr; }
  .demo-stats > div:first-child { grid-column: 1 / -1; }
  .demo-stats > div { min-height: 105px; }
  .demo-plan, .demo-calendar { padding: 14px; }
  .demo-plan li { grid-template-columns: 28px 1fr; }
  .demo-plan li em, .demo-plan li button { grid-column: 2; justify-self: start; }
  .demo-task-head, .demo-library-head, .demo-progress-head { align-items: start; }
  .demo-problem { padding: 20px 15px; }
  .demo-formula { font-size: 32px; }
  .demo-answer-row { grid-template-columns: 1fr; }
  .demo-answer-row button { min-height: 42px; }
  .demo-chart { gap: 8px; padding-inline: 12px; }
  .platform-features { grid-template-columns: 1fr 1fr; }
  .principle-stack article { grid-template-columns: 34px 1fr; gap: 10px; }
  .results-section { padding-block: 80px; }
  .results-row > div { min-height: 150px; padding: 22px 14px 0; }
  .results-row strong { font-size: 50px; }
  .result-cases { margin-top: 40px; }
  .result-cases article { grid-template-columns: 100px 1fr; gap: 18px; min-height: 220px; padding: 22px 18px; }
  .result-case-score strong { font-size: 62px; }
  .result-cases h3 { font-size: 21px; }
  .student-voices { grid-template-columns: 1fr; margin-top: 40px; }
  .student-voices-heading { grid-column: auto; padding: 24px 0; }
  .student-voices blockquote, .student-voices blockquote:first-of-type { padding: 25px 0; border-top: 1px solid rgba(255, 255, 255, .18); border-left: 0; }
  .student-voices blockquote p { font-size: 15px; }
  .start-steps { grid-template-columns: 1fr; }
  .start-steps li { min-height: 190px; padding: 24px 8px; }
  .start-steps li + li, .start-steps li:nth-child(3), .start-steps li:nth-child(4) { border-top: 1px solid var(--line); border-left: 0; }
  .start-steps strong { margin-top: 36px; }
  .contact-section { padding-block: 86px; }
  .public-button.light { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-about, .footer-contact { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .trial-hero { padding-top: 118px; }
  .trial-back { margin-bottom: 35px; }
  .trial-hero h1 { font-size: clamp(55px, 17vw, 80px); }
  .trial-hero-copy > p:last-of-type { margin-top: 26px; font-size: 14px; }
  .trial-hero-actions { display: grid; gap: 12px; }
  .trial-passport { min-height: 500px; padding: 21px 18px; box-shadow: 9px 9px 0 var(--violet-pale); }
  .trial-passport-title strong { font-size: 30px; }
  .trial-passport dl > div { padding: 13px 8px; }
  .trial-workspace { padding-block: 74px; }
  .trial-workspace-head { align-items: center; }
  .trial-workspace-head strong { font-size: 20px; }
  .trial-timer output { font-size: 18px; }
  .trial-nav { grid-template-columns: repeat(4, 1fr); max-width: none; }
  .trial-form { margin-top: 28px; }
  .trial-task { min-height: 510px; padding: 24px 17px; }
  .trial-task-meta { align-items: flex-start; }
  .trial-task h2 { margin-top: 28px; font-size: 31px; }
  .trial-task > p { font-size: 14px; }
  .trial-formula { margin-block: 30px; font-size: 27px; overflow-wrap: anywhere; }
  .trial-task > label { margin-top: 25px; }
  .trial-form-actions { grid-template-columns: 1fr 1fr; }
  .trial-form-actions > span { grid-column: 1 / -1; grid-row: 1; }
  .trial-form-actions button { width: 100%; }
  .trial-results { padding-block: 80px; }
  .trial-results-overview { grid-template-columns: 1fr; padding-bottom: 72px; }
  .trial-result-score { width: min(78vw, 330px); justify-self: center; }
  .trial-result-copy h2 { font-size: 48px; }
  .trial-topic-summary { grid-template-columns: 1fr; }
  .trial-solutions-head { margin-top: 72px; }
  .trial-solutions-head h2 { font-size: 40px; }
  .trial-solutions summary span { font-size: 11px; }
  .trial-solutions summary { min-height: 72px; gap: 14px; }
  .trial-solutions details > .solution-body { padding-bottom: 34px; }
  .solution-lead, .solution-note { grid-template-columns: 1fr; gap: 9px; padding: 16px 14px; }
  .solution-steps li { grid-template-columns: 34px 1fr; gap: 11px; padding: 20px 0; }
  .solution-steps li > span { width: 27px; height: 27px; }
  .solution-steps li strong { font-size: 12px; }
  .solution-steps li p { font-size: 11px; }
  .solution-formula { font-size: 13px; }
  .solution-formula.solution-fraction { min-width: min(100%, 230px); }
  .solution-answer { padding: 15px 14px; }
  .solution-answer strong { font-size: 21px; }
  .trial-funnel { margin-top: 68px; padding: 27px 19px; }
  .legal-hero { padding: 126px 0 62px; }
  .legal-hero-inner h1 { font-size: 42px; }
  .legal-details > div { grid-template-columns: 1fr; gap: 8px; }
  .legal-content, .legal-details dd, .footer-grid { overflow-wrap: anywhere; }
}

@media (max-width: 380px) {
  .section-heading h2, .section-intro h2, .levels-heading h2, .score-copy h2, .process-sticky h2, .pricing-heading h2, .platform-heading h2, .principles-grid h2, .results-heading h2, .contact-inner h2 { font-size: clamp(34px, 10.8vw, 40px); }
  .process-sticky h2 { hyphens: auto; overflow-wrap: break-word; }
  .score-calculator-head { align-items: flex-start; }
  .score-calculator-head strong { font-size: 18px; }
  .score-task-grid { grid-template-columns: repeat(4, 1fr); }
  .score-steppers { grid-template-columns: repeat(2, 1fr); }
  .score-part-title { align-items: flex-start; gap: 12px; }
  .score-part-title small { max-width: 98px; text-align: right; }
  .score-result { grid-template-columns: 1fr; text-align: center; }
  .score-ring { margin-inline: auto; }
  .score-result-copy p { margin-inline: auto; }
  .demo-sidebar button { grid-template-columns: 1fr; gap: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
}

/* Readability and visual-rhythm pass — October 2026 */
:root {
  --muted: #74717a;
  --text-meta: 11px;
  --text-small: 13px;
}

h1, h2, h3, strong { text-wrap: balance; }
p, li, blockquote { text-wrap: pretty; }
.section-space { padding-block: 112px; }
.section-kicker { margin-bottom: 24px; font-size: var(--text-meta); line-height: 1.45; letter-spacing: .11em; }
.public-brand small { font-size: 10px; letter-spacing: .075em; }
.public-menu > a { font-size: 12px; }
.public-button { min-height: 54px; font-size: 13px; }
.hero-facts dd { font-size: 12px; line-height: 1.5; }

.stage-header { font-size: 10px; }
.stage-problem { grid-template-columns: 68px 1fr; padding: 15px 16px; }
.stage-problem > span { font-size: 10px; }
.stage-problem p { font-size: 12px; line-height: 1.6; }
.derivative-legend { min-height: 44px; font-size: 10px; }
.stage-reasoning > div { grid-template-columns: 28px 1fr; gap: 11px; padding: 14px; }
.stage-reasoning > div > span { width: 26px; height: 26px; font-size: 10px; }
.stage-reasoning p { font-size: 10px; line-height: 1.6; }
.stage-reasoning p strong { font-size: 11px; }
.stage-answer span, .stage-answer small { font-size: 11px; }

.about-name span,
.about-portrait figcaption,
.about-portrait figcaption strong { font-size: 11px; }
.about-columns p { font-size: 14px; line-height: 1.7; }
.section-intro > p:last-child,
.levels-heading > p,
.pricing-heading > p,
.platform-heading > p,
.results-heading > p { font-size: 16px; line-height: 1.65; }

.card-number, .level-card-top > span { font-size: 12px; }
.card-tag, .level-card-top small { font-size: 10px; }
.direction-copy p { font-size: 13px; line-height: 1.65; }
.direction-exam-map span,
.direction-foundation span,
.direction-nodes span,
.direction-nodes strong { font-size: 10px; }
.direction-geometry > span,
.direction-nodes em { font-size: 10px; }
.direction-tags li { padding: 7px 10px; font-size: 10px; letter-spacing: .025em; }

.level-card { min-height: 620px; }
.level-start { font-size: 12px; }
.level-start span { font-size: 10px; }
.level-card > p:not(.level-start) { font-size: 14px; line-height: 1.65; }
.level-plan li { min-height: 46px; font-size: 12px; }
.level-plan li span { font-size: 10px; }
.level-route { font-size: 11px; }
.levels-diagnostic span { font-size: 10px; }
.levels-diagnostic strong { font-size: 13px; }
.levels-diagnostic p { font-size: 12px; line-height: 1.6; }
.levels-diagnostic a { min-height: 46px; padding-inline: 17px; font-size: 11px; }
.levels-note { font-size: 11px; }

.score-copy > p:not(.section-kicker, .score-source) { font-size: 15px; line-height: 1.7; }
.score-facts span { font-size: 11px; }
.score-source { font-size: 11px; line-height: 1.65; }
.score-diagnostic-link span { font-size: 10px; }
.score-diagnostic-link strong { font-size: 13px; }
.score-calculator-head small { font-size: 10px; }
.score-calculator-head button,
.score-preset { min-height: 36px; font-size: 11px; }
.score-part-title span { font-size: 13px; }
.score-part-title small { font-size: 10px; }
.score-task span { font-size: 14px; }
.score-task small { font-size: 10px; }
.score-stepper > span { font-size: 11px; }
.score-stepper > small { font-size: 10px; }
.score-ring span,
.score-result-copy small { font-size: 10px; }
.score-result-copy p { font-size: 11px; line-height: 1.6; }

.process-list li > span { font-size: 11px; }
.process-list p { font-size: 14px; }
.price-card-top > span { font-size: 11px; }
.price-card-top small { font-size: 10px; }
.price-value span { font-size: 12px; }
.price-options span,
.price-personal-note span { font-size: 10px; }
.price-card > p { font-size: 14px; line-height: 1.65; }
.price-card > a { font-size: 13px; }
.price-included > strong { font-size: 11px; }
.price-included li { font-size: 13px; }

.platform-preview-label { font-size: 10px; }
.demo-sidebar button small { font-size: 10px; }
.demo-top small { font-size: 10px; }
.demo-stats span,
.demo-stats small { font-size: 10px; }
.demo-title strong { font-size: 13px; }
.demo-title span { font-size: 10px; }
.demo-plan li > i,
.demo-plan li em,
.demo-plan li button { font-size: 10px; }
.demo-plan li strong { font-size: 12px; }
.demo-plan li small { font-size: 10px; }
.mini-calendar b { font-size: 10px; }
.mini-calendar span,
.demo-calendar > p { font-size: 10px; }
.demo-task-head span,
.demo-library-head span,
.demo-progress-head span,
.demo-task-head em,
.demo-library-head em,
.demo-progress-head em { font-size: 10px; }
.demo-problem > p { font-size: 13px; }
.demo-problem label { font-size: 10px; }
.demo-answer-row input,
.demo-answer-row button { font-size: 12px; }
.demo-feedback { font-size: 11px; }
.demo-task-actions button,
.demo-task-actions span { font-size: 11px; }
.demo-library button small { font-size: 9px; }
.demo-library button strong { font-size: 12px; }
.demo-library article > p { font-size: 11px; }
.demo-chart span,
.demo-chart small { font-size: 10px; }
.demo-topic-progress span { font-size: 10px; }
.demo-topic-progress strong { font-size: 11px; }
.platform-features span { font-size: 12px; }

.principle-stack article > span { font-size: 11px; }
.principle-stack p { font-size: 14px; line-height: 1.65; }
.results-row span { font-size: 12px; }
.result-case-score span { font-size: 11px; }
.result-cases small { font-size: 10px; }
.result-cases p { font-size: 13px; line-height: 1.65; }
.student-voices-heading span { font-size: 10px; }
.student-voices blockquote footer { font-size: 11px; }
.results-caption { font-size: 11px; }
.start-steps span { font-size: 11px; }
.start-steps p { font-size: 14px; line-height: 1.6; }
.contact-inner > p:not(.section-kicker) { font-size: 17px; line-height: 1.65; }
.contact-meta a { font-size: 12px; }

.trial-back { font-size: 11px; }
.trial-hero-copy > p:last-of-type { font-size: 16px; line-height: 1.65; }
.trial-hero-actions > span { font-size: 10px; }
.trial-passport-head,
.trial-passport-head b,
.trial-passport-title small { font-size: 10px; }
.trial-passport dd { font-size: 10px; }
.trial-passport li { font-size: 11px; }
.trial-passport li span,
.trial-passport > p { font-size: 10px; }
.trial-workspace-head span { font-size: 10px; }
.trial-nav button { font-size: 11px; }
.trial-task-meta span,
.trial-task-meta small { font-size: 10px; }
.trial-task > p { font-size: 16px; line-height: 1.65; }
.trial-hint summary { font-size: 11px; }
.trial-hint p { font-size: 13px; }
.trial-task > label { font-size: 10px; }
.trial-form-actions button { font-size: 12px; }
.trial-form-actions > span { font-size: 10px; }
.trial-result-score > span,
.trial-result-score > i { font-size: 10px; }
.trial-topic-summary > div { font-size: 11px; }
.trial-solutions-head span { font-size: 10px; }
.trial-solutions summary b { font-size: 10px; }
.solution-lead > span,
.solution-note > span,
.solution-answer span { font-size: 10px; }
.solution-lead p,
.solution-note p { font-size: 13px; }
.solution-steps li > span { font-size: 10px; }
.solution-steps li strong { font-size: 14px; }
.solution-steps li p { font-size: 13px; line-height: 1.65; }
.solution-formula { font-size: 15px; }
.trial-funnel span { font-size: 10px; }
.trial-funnel > button { font-size: 11px; }
.trial-source { font-size: 10px; }

.footer-about p { font-size: 12px; }
.footer-grid nav strong,
.footer-contact strong { font-size: 10px; }
.footer-grid nav a,
.footer-contact a,
.footer-contact span { font-size: 12px; }
.footer-bottom { font-size: 11px; }
.legal-hero-inner > p:last-child { font-size: 13px; }
.legal-toc strong { font-size: 10px; }
.legal-toc a,
.legal-details dt { font-size: 12px; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 3px;
}

@media (max-width: 820px) {
  .section-space { padding-block: 84px; }
  .section-kicker { font-size: 10px; }
  .public-menu > a { font-size: 16px; }
  .platform-heading > p,
  .pricing-heading > p,
  .results-heading > p { font-size: 15px; }
}

@media (max-width: 560px) {
  .section-space { padding-block: 68px; }
  .section-kicker { margin-bottom: 20px; font-size: 10px; }
  .hero-lead { font-size: 16px; line-height: 1.6; }
  .hero-facts dd { font-size: 10px; }
  .stage-header { font-size: 10px; }
  .stage-problem p { font-size: 12px; }
  .derivative-legend { font-size: 10px; }
  .stage-reasoning p { font-size: 10px; }
  .direction-card h3 { font-size: 28px; }
  .direction-copy p { font-size: 14px; }
  .level-card { min-height: 0; }
  .level-card h3 { font-size: 29px; }
  .score-task-grid { gap: 8px; }
  .score-task { min-height: 48px; aspect-ratio: auto; }
  .score-stepper > small { font-size: 10px; }
  .demo-sidebar button { min-height: 52px; }
  .demo-sidebar button small { font-size: 10px; }
  .demo-body { padding: 22px 16px; }
  .demo-plan li strong { font-size: 11px; }
  .demo-plan li small { font-size: 10px; }
  .platform-features span { min-height: 50px; padding-top: 14px; }
  .results-section { padding-block: 72px; }
  .start-steps li { min-height: 170px; }
  .trial-task > p { font-size: 15px; }
  .trial-solutions summary span { font-size: 12px; }
  .solution-steps li strong { font-size: 13px; }
  .solution-steps li p,
  .solution-lead p,
  .solution-note p { font-size: 13px; }
}

/* Student cabinet interactive demo v2 */
.platform-preview-label { align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 17px; }
.platform-preview-label > div { display: flex; align-items: center; gap: 10px; }
.platform-preview-label strong { color: var(--ink); font-size: 11px; font-weight: 740; }
.platform-preview-label small { color: var(--muted); font-size: 11px; font-weight: 520; letter-spacing: 0; text-transform: none; }
.platform-demo { grid-template-columns: 210px minmax(0, 1fr); min-height: 760px; background: #f5f5f2; border-radius: 18px; box-shadow: 18px 18px 0 rgba(104, 65, 227, .16); }

.demo-sidebar { min-width: 0; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 24px 17px 20px; color: white; background: #19181d; }
.demo-brand { display: flex; align-items: center; gap: 9px; padding: 0 7px 22px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.demo-brand > span { width: 31px; height: 31px; display: grid; place-items: center; color: white; background: var(--violet); border-radius: 7px; font-size: 12px; font-weight: 800; letter-spacing: -.08em; }
.demo-brand strong { font-size: 12px; font-weight: 720; }
.demo-student-mini { display: grid; grid-template-columns: 34px 1fr; align-items: center; gap: 10px; margin-top: 18px; padding: 11px 9px; background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); border-radius: 9px; }
.demo-student-mini > i { width: 32px; height: 32px; display: grid; place-items: center; color: var(--ink); background: var(--signal); border-radius: 50%; font-size: 11px; font-style: normal; font-weight: 780; }
.demo-student-mini strong, .demo-student-mini small { display: block; }
.demo-student-mini strong { font-size: 11px; font-weight: 650; }
.demo-student-mini small { margin-top: 3px; color: rgba(255, 255, 255, .46); font-size: 10px; }
.demo-navigation { display: grid; gap: 5px; margin-top: 23px; }
.demo-navigation button { position: relative; min-height: 46px; display: grid; grid-template-columns: 19px 1fr auto; align-items: center; justify-items: start; gap: 10px; padding: 0 11px; color: rgba(255, 255, 255, .58); background: transparent; border: 1px solid transparent; border-radius: 8px; cursor: pointer; transition: color .18s ease, background .18s ease, border-color .18s ease; }
.demo-navigation button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.demo-navigation button > span { font-size: 11px; font-weight: 590; }
.demo-navigation button > b { min-width: 20px; height: 20px; display: grid; place-items: center; color: var(--ink); background: var(--signal); border-radius: 999px; font-size: 10px; }
.demo-navigation button:hover { color: white; background: rgba(255, 255, 255, .07); }
.demo-navigation button.active { color: white; background: var(--violet); border-color: rgba(255, 255, 255, .09); }
.demo-side-progress { margin-top: auto; padding: 16px 11px 5px; border-top: 1px solid rgba(255, 255, 255, .12); }
.demo-side-progress > span, .demo-side-progress > strong, .demo-side-progress > small { display: block; }
.demo-side-progress > span { color: rgba(255, 255, 255, .45); font-size: 10px; }
.demo-side-progress > strong { margin-top: 6px; font-size: 23px; font-weight: 670; letter-spacing: -.04em; }
.demo-side-progress > strong b { font: inherit; }
.demo-side-progress > i { height: 5px; display: block; margin-top: 11px; background: rgba(255, 255, 255, .12); border-radius: 9px; overflow: hidden; }
.demo-side-progress > i b { width: 78%; height: 100%; display: block; background: var(--signal); transition: width .35s ease; }
.demo-side-progress > small { margin-top: 8px; color: rgba(255, 255, 255, .38); font-size: 10px; }

.demo-body { min-width: 0; padding: 28px 31px 32px; }
.demo-top { min-height: 59px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.demo-top small { font-size: 10px; letter-spacing: .07em; }
.demo-top small i { margin-inline: 4px; color: var(--violet); font-style: normal; }
.demo-top strong { font-size: 27px; }
.demo-top-actions { display: flex; align-items: center; gap: 14px; }
.demo-top-actions > span { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 10px; }
.demo-top-actions > span i { width: 7px; height: 7px; background: #65b62f; border-radius: 50%; box-shadow: 0 0 0 3px rgba(101, 182, 47, .13); }
.demo-avatar { width: 40px; height: 40px; border: 0; border-radius: 50%; cursor: default; }
.demo-screen { margin-top: 22px; }

.demo-focus-grid { display: grid; grid-template-columns: minmax(0, 1.36fr) minmax(230px, .64fr); gap: 12px; }
.demo-focus-card, .demo-week-card { min-width: 0; min-height: 216px; border-radius: 12px; }
.demo-focus-card { padding: 22px 23px 20px; color: white; background: var(--violet); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .1); }
.demo-focus-card > div:first-child { display: flex; justify-content: space-between; gap: 18px; }
.demo-focus-card > div:first-child span { color: var(--signal); font-size: 10px; font-weight: 720; letter-spacing: .07em; text-transform: uppercase; }
.demo-focus-card > div:first-child em { padding: 5px 8px; color: rgba(255, 255, 255, .72); background: rgba(255, 255, 255, .1); border-radius: 999px; font-size: 10px; font-style: normal; }
.demo-focus-card h3 { margin: 26px 0 0; font-size: 24px; font-weight: 630; line-height: 1.08; letter-spacing: -.04em; }
.demo-focus-card > p { max-width: 570px; margin: 10px 0 0; color: rgba(255, 255, 255, .68); font-size: 12px; line-height: 1.55; }
.demo-focus-progress { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 6px 15px; margin-top: 17px; color: rgba(255, 255, 255, .65); font-size: 10px; }
.demo-focus-progress strong { color: white; font-size: 10px; }
.demo-focus-progress i { grid-column: 1 / -1; height: 5px; display: block; background: rgba(255, 255, 255, .16); border-radius: 5px; overflow: hidden; }
.demo-focus-progress i b { width: 25%; height: 100%; display: block; background: var(--signal); transition: width .35s ease; }
.demo-focus-card > button { min-height: 38px; display: inline-flex; align-items: center; gap: 22px; margin-top: 17px; padding: 0 13px; color: var(--ink); background: var(--signal); border: 0; border-radius: 7px; font-size: 11px; font-weight: 720; cursor: pointer; }
.demo-focus-card > button:hover { background: white; }
.demo-week-card { display: grid; place-items: center; gap: 15px; padding: 20px; text-align: center; background: white; border: 1px solid #dedce2; }
.demo-week-ring { --demo-progress: 280.8deg; position: relative; width: 112px; height: 112px; display: flex; flex-direction: column; align-items: center; justify-content: center; background: conic-gradient(var(--violet) var(--demo-progress), #e9e6ee 0); border-radius: 50%; }
.demo-week-ring::before { content: ""; position: absolute; inset: 11px; background: white; border-radius: 50%; }
.demo-week-ring strong, .demo-week-ring span { position: relative; z-index: 1; display: block; }
.demo-week-ring strong { color: var(--violet); font-size: 23px; letter-spacing: -.05em; }
.demo-week-ring span { margin-top: 3px; color: var(--muted); font-size: 10px; }
.demo-week-card > div:last-child > span { color: var(--muted); font-size: 10px; }
.demo-week-card > div:last-child > strong { display: block; margin-top: 4px; font-size: 13px; }
.demo-week-card p { margin: 5px 0 0; color: var(--muted); font-size: 10px; line-height: 1.45; }

.demo-stats { gap: 10px; margin-top: 10px; }
.demo-stats > div { min-height: 98px; padding: 15px 16px; border-radius: 9px; }
.demo-stats span, .demo-stats small { font-size: 10px; }
.demo-stats strong { margin-top: 7px; font-size: 23px; }
.demo-home-grid { display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(275px, .78fr); gap: 10px; margin-top: 10px; }
.demo-plan, .demo-agenda { min-height: 286px; padding: 18px; background: white; border: 1px solid #dedce2; border-radius: 10px; }
.demo-title > div span, .demo-title > div strong { display: block; }
.demo-title > div span { margin-bottom: 4px; color: var(--violet); font-size: 10px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.demo-title strong { font-size: 13px; }
.demo-title > small { color: var(--muted); font-size: 10px; }
.demo-plan ul { margin-top: 12px; }
.demo-plan li { min-height: 61px; }
.demo-plan li > i { font-size: 10px; }
.demo-plan li strong { font-size: 11px; }
.demo-plan li small, .demo-plan li em, .demo-plan li button { font-size: 10px; }
.demo-agenda .mini-calendar { margin-top: 20px; }
.demo-lesson-card { display: grid; grid-template-columns: 8px 1fr auto; align-items: center; gap: 10px; margin-top: 17px; padding: 12px; background: var(--paper-cool); border-radius: 8px; }
.demo-lesson-card > i { width: 8px; height: 8px; background: var(--violet); border-radius: 50%; }
.demo-lesson-card span, .demo-lesson-card strong, .demo-lesson-card small { display: block; }
.demo-lesson-card span { color: var(--violet); font-size: 10px; font-weight: 680; }
.demo-lesson-card strong { margin-top: 3px; font-size: 10px; }
.demo-lesson-card small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.demo-lesson-card > b { color: var(--violet); font-size: 16px; }
.demo-agenda > button { margin-top: 13px; padding: 0; color: var(--violet); background: transparent; border: 0; font-size: 10px; font-weight: 680; cursor: pointer; }

.demo-section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.demo-section-head span, .demo-section-head strong { display: block; }
.demo-section-head span { margin-bottom: 5px; color: var(--violet); font-size: 10px; font-weight: 690; }
.demo-section-head strong { font-size: 20px; font-weight: 650; letter-spacing: -.03em; }
.demo-section-head em { padding: 6px 9px; color: var(--violet); background: var(--violet-pale); border-radius: 999px; font-size: 10px; font-style: normal; font-weight: 720; }
.demo-task-progress { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; margin-top: 16px; color: var(--muted); font-size: 10px; }
.demo-task-progress > i { height: 5px; display: block; background: #dfdce4; border-radius: 8px; overflow: hidden; }
.demo-task-progress > i b { width: 33%; height: 100%; display: block; background: var(--violet); transition: width .3s ease; }
.demo-task-progress > strong { color: var(--violet); font-size: 10px; }
.demo-task-layout { display: grid; grid-template-columns: minmax(0, 1fr) 225px; gap: 12px; margin-top: 16px; }
.demo-problem { max-width: none; min-height: 425px; margin: 0; padding: 24px 26px; border-radius: 11px; }
.demo-problem-number { display: flex; align-items: center; justify-content: space-between; }
.demo-problem-number span { color: var(--violet); font-size: 11px; font-weight: 760; }
.demo-problem-number small { color: var(--muted); font-size: 10px; text-transform: uppercase; }
.demo-problem > p { margin-top: 28px; font-size: 13px; }
.demo-formula { margin: 35px 0; font-size: clamp(32px, 4vw, 45px); }
.demo-formula sub { font-size: .5em; }
.demo-hint-toggle { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 12px 0; color: var(--violet); background: transparent; border: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 11px; font-weight: 670; cursor: pointer; }
.demo-hint-toggle span { width: 24px; height: 24px; display: grid; place-items: center; background: var(--paper-cool); border-radius: 5px; font-size: 15px; }
.demo-hint-panel { padding: 12px 13px; color: var(--ink-soft); background: var(--paper-cool); font-size: 11px; line-height: 1.55; }
.demo-problem > label { margin-top: 23px; font-size: 10px; font-weight: 680; text-transform: uppercase; }
.demo-answer-row input { height: 46px; font-size: 14px; }
.demo-answer-row input.is-correct { border-color: #65a62e; box-shadow: 0 0 0 3px rgba(101, 166, 46, .12); }
.demo-answer-row input.is-error { border-color: #c75370; box-shadow: 0 0 0 3px rgba(199, 83, 112, .1); }
.demo-answer-row button { min-width: 112px; font-size: 11px; }
.demo-feedback { min-height: 45px; display: grid; grid-template-columns: 8px 1fr; align-items: center; gap: 9px; padding: 11px 12px; font-size: 11px; }
.demo-feedback > i { width: 8px; height: 8px; background: #a8a4ad; border-radius: 50%; }
.demo-feedback.success > i { background: #65a62e; }
.demo-feedback.error > i { background: #c75370; }
.demo-task-aside { min-height: 425px; padding: 21px 18px; color: white; background: #242229; border-radius: 11px; }
.demo-task-aside > span { color: var(--signal); font-size: 10px; font-weight: 710; letter-spacing: .08em; text-transform: uppercase; }
.demo-task-aside > strong { display: block; margin-top: 8px; font-size: 21px; font-weight: 610; }
.demo-task-aside ul { margin: 28px 0 0; padding: 0; list-style: none; }
.demo-task-aside li { display: grid; grid-template-columns: 27px 1fr; align-items: center; gap: 9px; min-height: 48px; color: rgba(255, 255, 255, .62); border-top: 1px solid rgba(255, 255, 255, .11); font-size: 10px; }
.demo-task-aside li > i { width: 25px; height: 25px; display: grid; place-items: center; color: white; background: rgba(255, 255, 255, .09); border-radius: 50%; font-size: 10px; font-style: normal; }
.demo-task-aside li > i.done { color: var(--ink); background: var(--signal); }
.demo-task-aside > div { margin-top: 28px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .11); }
.demo-task-aside small { color: rgba(255, 255, 255, .42); font-size: 10px; }
.demo-task-aside p { margin: 7px 0 0; color: rgba(255, 255, 255, .65); font-size: 10px; line-height: 1.55; }
.demo-task-actions { margin-top: 14px; }
.demo-task-actions button { min-height: 36px; padding: 0 2px; font-size: 11px; }
.demo-task-actions button:last-child { display: inline-flex; align-items: center; gap: 14px; padding: 0 13px; color: white; background: var(--violet); border-radius: 7px; }

.demo-library-intro { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin-top: 16px; padding: 15px 17px; color: white; background: var(--violet); border-radius: 9px; }
.demo-library-intro strong { font-size: 12px; }
.demo-library-intro p { margin: 4px 0 0; color: rgba(255, 255, 255, .68); font-size: 10px; }
.demo-library-intro > span { padding: 7px 10px; color: var(--ink); background: var(--signal); border-radius: 999px; font-size: 10px; font-weight: 700; white-space: nowrap; }
.demo-library { gap: 9px; margin-top: 12px; }
.demo-library article { border-radius: 10px; }
.demo-library article > button { min-height: 69px; padding: 15px 17px; }
.demo-library button small { font-size: 10px; }
.demo-library button strong { font-size: 13px; }
.demo-library button i { width: 29px; height: 29px; }
.demo-material-body { padding: 0 17px 17px; border-top: 1px solid #ebe9ed; }
.demo-material-body > p { margin: 14px 0 0; color: var(--ink-soft); font-size: 11px; line-height: 1.6; }
.demo-material-body ul { display: flex; flex-wrap: wrap; gap: 6px; margin: 13px 0 0; padding: 0; list-style: none; }
.demo-material-body li { padding: 6px 8px; color: var(--ink-soft); background: var(--paper); border-radius: 999px; font-size: 10px; }
.demo-material-body > button { margin-top: 14px; padding: 0; color: var(--violet); background: transparent; border: 0; font-size: 10px; font-weight: 690; cursor: pointer; }

.demo-progress-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-top: 15px; }
.demo-progress-kpis > div { padding: 14px 15px; background: white; border: 1px solid #dedce2; border-radius: 9px; }
.demo-progress-kpis span, .demo-progress-kpis strong, .demo-progress-kpis small { display: block; }
.demo-progress-kpis span { color: var(--muted); font-size: 10px; }
.demo-progress-kpis strong { margin-top: 5px; color: var(--violet); font-size: 24px; letter-spacing: -.04em; }
.demo-progress-kpis small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.demo-progress-layout { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(210px, .6fr); gap: 10px; margin-top: 10px; }
.demo-chart-card { min-width: 0; padding: 17px 18px 14px; background: white; border: 1px solid #dedce2; border-radius: 10px; }
.demo-line-chart { width: 100%; height: 205px; margin-top: 5px; overflow: visible; }
.demo-line-chart .chart-grid { fill: none; stroke: #e9e7eb; stroke-width: 1; }
.demo-line-chart .chart-area { fill: rgba(104, 65, 227, .09); }
.demo-line-chart .chart-line { fill: none; stroke: var(--violet); stroke-width: 5; stroke-linecap: round; }
.demo-line-chart circle { fill: white; stroke: var(--violet); stroke-width: 4; }
.demo-line-chart circle.current { fill: var(--signal); stroke: var(--ink); }
.demo-chart-axis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: -9px; }
.demo-chart-axis span, .demo-chart-axis b { display: block; }
.demo-chart-axis span { color: var(--muted); font-size: 10px; text-align: center; }
.demo-chart-axis b { margin-bottom: 3px; color: var(--ink); font-size: 10px; }
.demo-achievement { min-height: 300px; display: flex; flex-direction: column; padding: 20px; color: white; background: #242229; border-radius: 10px; }
.demo-achievement > span { color: var(--signal); font-size: 10px; font-weight: 720; letter-spacing: .08em; text-transform: uppercase; }
.demo-achievement > div { width: 48px; height: 48px; display: grid; place-items: center; margin-top: 25px; color: var(--ink); background: var(--signal); border-radius: 50%; font-size: 22px; }
.demo-achievement > strong { margin-top: 19px; font-size: 20px; font-weight: 600; line-height: 1.15; }
.demo-achievement > p { margin: 10px 0 0; color: rgba(255, 255, 255, .59); font-size: 10px; line-height: 1.55; }
.demo-achievement > button { margin-top: auto; padding: 14px 0 0; color: white; background: transparent; border: 0; border-top: 1px solid rgba(255, 255, 255, .14); font-size: 10px; font-weight: 660; text-align: left; cursor: pointer; }
.demo-topic-progress { gap: 9px; margin-top: 10px; }
.demo-topic-progress > div { padding: 13px; }
.demo-topic-progress span { font-size: 10px; }
.demo-topic-progress strong { font-size: 11px; }
.demo-topic-progress i { height: 5px; }

.platform-features { grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 46px; border-top-color: rgba(21, 20, 25, .28); }
.platform-features article { min-height: 145px; padding: 20px 24px 0 0; }
.platform-features article + article { padding-left: 24px; border-left: 1px solid var(--line); }
.platform-features span { display: block; padding: 0; color: var(--violet); font-size: 10px; font-weight: 760; }
.platform-features span::before { content: none; }
.platform-features strong { display: block; margin-top: 24px; font-size: 15px; font-weight: 650; }
.platform-features p { margin: 8px 0 0; color: var(--ink-soft); font-size: 11px; line-height: 1.55; }

@media (max-width: 1120px) {
  .platform-demo { grid-template-columns: 176px minmax(0, 1fr); }
  .demo-body { padding-inline: 24px; }
  .demo-focus-grid { grid-template-columns: 1fr 230px; }
  .demo-task-layout { grid-template-columns: 1fr 205px; }
  .demo-progress-layout { grid-template-columns: 1fr 205px; }
}

@media (max-width: 820px) {
  .platform-demo { grid-template-columns: 1fr; grid-template-rows: auto 1fr; min-height: 0; }
  .demo-sidebar { display: block; padding: 10px; }
  .demo-brand, .demo-student-mini, .demo-side-progress { display: none; }
  .demo-navigation { grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 0; }
  .demo-navigation button { grid-template-columns: 19px auto auto; justify-content: center; justify-items: center; gap: 7px; min-height: 48px; padding-inline: 8px; }
  .demo-navigation button > span { font-size: 10px; }
  .demo-navigation button > b { position: absolute; transform: translate(27px, -13px); }
  .demo-body { padding: 25px 23px 28px; }
  .demo-focus-grid { grid-template-columns: minmax(0, 1.25fr) minmax(210px, .75fr); }
  .demo-home-grid { grid-template-columns: 1fr; }
  .demo-plan, .demo-agenda { min-height: 0; }
  .demo-task-layout { grid-template-columns: minmax(0, 1fr) 200px; }
  .demo-progress-layout { grid-template-columns: minmax(0, 1fr) 200px; }
  .platform-features { grid-template-columns: 1fr 1fr; }
  .platform-features article:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .platform-features article:nth-child(4) { border-top: 1px solid var(--line); }
}

@media (max-width: 560px) {
  .platform-preview-label { align-items: flex-start; flex-direction: column; gap: 5px; }
  .platform-preview-label small { padding-left: 19px; }
  .platform-demo { box-shadow: 9px 9px 0 rgba(104, 65, 227, .16); }
  .demo-sidebar { padding: 8px; }
  .demo-navigation button { grid-template-columns: 1fr; gap: 2px; min-height: 54px; padding: 5px 2px; }
  .demo-navigation button svg { width: 17px; height: 17px; }
  .demo-navigation button > span { font-size: 10px; }
  .demo-navigation button > b { transform: translate(20px, -17px); }
  .demo-body { padding: 20px 14px 23px; }
  .demo-top { min-height: 55px; }
  .demo-top strong { font-size: 22px; }
  .demo-top-actions > span { display: none; }
  .demo-avatar { width: 36px; height: 36px; }
  .demo-focus-grid { grid-template-columns: 1fr; }
  .demo-focus-card { padding: 20px 18px; }
  .demo-focus-card h3 { font-size: 22px; }
  .demo-week-card { min-height: 150px; grid-template-columns: 100px 1fr; text-align: left; }
  .demo-week-ring { width: 96px; height: 96px; text-align: center; }
  .demo-stats { grid-template-columns: 1fr 1fr; }
  .demo-stats > div:first-child { grid-column: auto; }
  .demo-stats > div:last-child { grid-column: 1 / -1; }
  .demo-home-grid { grid-template-columns: 1fr; }
  .demo-plan, .demo-agenda { padding: 15px; }
  .demo-plan li { grid-template-columns: 29px 1fr; }
  .demo-plan li em, .demo-plan li button { grid-column: 2; justify-self: start; }
  .demo-section-head { align-items: flex-start; }
  .demo-section-head strong { font-size: 18px; }
  .demo-task-progress { grid-template-columns: auto 1fr; }
  .demo-task-progress > strong { grid-column: 2; text-align: right; }
  .demo-task-layout { grid-template-columns: 1fr; }
  .demo-problem { min-height: 0; padding: 20px 16px; }
  .demo-formula { margin-block: 30px; font-size: 34px; }
  .demo-answer-row { grid-template-columns: 1fr; }
  .demo-answer-row button { min-height: 44px; }
  .demo-task-aside { min-height: 0; }
  .demo-task-aside ul { margin-top: 18px; }
  .demo-task-aside > div { margin-top: 18px; }
  .demo-task-actions { align-items: stretch; flex-direction: column-reverse; }
  .demo-task-actions button { width: 100%; justify-content: center; }
  .demo-library-intro { align-items: flex-start; flex-direction: column; gap: 12px; }
  .demo-library button strong { font-size: 12px; }
  .demo-progress-kpis { grid-template-columns: 1fr 1fr; }
  .demo-progress-kpis > div:last-child { grid-column: 1 / -1; }
  .demo-progress-layout { grid-template-columns: 1fr; }
  .demo-line-chart { height: 170px; }
  .demo-achievement { min-height: 250px; }
  .demo-topic-progress { grid-template-columns: 1fr; }
  .platform-features article { min-height: 160px; padding: 18px 16px 0 0; }
  .platform-features article + article { padding-left: 16px; }
  .platform-features article:nth-child(3) { padding-left: 0; }
  .platform-features strong { margin-top: 18px; font-size: 14px; }
}

/* Public navigation v2 */
.public-header {
  height: 82px;
  background: rgba(247, 246, 243, .92);
  border-bottom-color: rgba(21, 20, 25, .12);
  backdrop-filter: blur(18px) saturate(135%);
  -webkit-backdrop-filter: blur(18px) saturate(135%);
}
.public-header.is-scrolled {
  background: rgba(255, 255, 255, .95);
  box-shadow: 0 12px 36px rgba(21, 20, 25, .07);
}
.public-header .public-nav-wrap {
  width: min(1380px, calc(100% - 48px));
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(22px, 2.4vw, 42px);
}
.public-header .public-brand {
  justify-self: start;
  flex: 0 0 auto;
}
.public-header .public-brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  box-shadow: 0 7px 18px rgba(21, 20, 25, .14);
}
.public-header .public-brand strong { font-size: 16px; }
.public-header .public-brand small { margin-top: 3px; font-size: 9px; }
.public-menu {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 1.7vw, 28px);
}
.public-menu-primary,
.public-menu-actions { display: flex; align-items: center; }
.public-menu-primary {
  justify-self: center;
  gap: 2px;
  padding: 4px;
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(21, 20, 25, .09);
  border-radius: 13px;
  box-shadow: 0 4px 18px rgba(21, 20, 25, .035);
}
.public-menu-link,
.public-more-toggle {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 11px;
  color: #343239;
  background: transparent;
  border: 0;
  border-radius: 9px;
  font-size: 12px;
  font-weight: 630;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: color .18s ease, background .18s ease, transform .18s ease;
}
.public-menu-link:hover,
.public-menu-link:focus-visible,
.public-more-toggle:hover,
.public-more-toggle:focus-visible,
.public-more.is-open .public-more-toggle {
  color: var(--ink);
  background: #eeebf7;
  outline: 0;
}
.public-more { position: relative; }
.public-more-toggle { gap: 6px; }
.public-more-toggle svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  transition: transform .18s ease;
}
.public-more.is-open .public-more-toggle svg { transform: rotate(180deg); }
.public-more-menu {
  position: absolute;
  z-index: 4;
  top: calc(100% + 12px);
  right: 0;
  width: 338px;
  padding: 8px;
  background: rgba(255, 255, 255, .985);
  border: 1px solid rgba(21, 20, 25, .12);
  border-radius: 15px;
  box-shadow: 0 24px 65px rgba(21, 20, 25, .14);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-7px) scale(.985);
  transform-origin: top right;
  transition: opacity .16s ease, visibility .16s ease, transform .16s ease;
}
.public-more.is-open .public-more-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
}
.public-more-menu > a {
  display: grid;
  grid-template-columns: 27px minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  min-height: 68px;
  padding: 11px 12px;
  border-radius: 10px;
  transition: background .18s ease;
}
.public-more-menu > a + a { border-top: 1px solid #eceaee; }
.public-more-menu > a:hover,
.public-more-menu > a:focus-visible { background: #f2effb; outline: 0; }
.public-more-menu > a > span:nth-child(2) { min-width: 0; display: flex; flex-direction: column; }
.public-more-menu strong { font-size: 13px; font-weight: 690; }
.public-more-menu small { margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.35; }
.public-more-index { color: var(--violet); font-size: 9px; font-weight: 760; letter-spacing: .08em; }
.public-more-arrow { color: var(--violet); font-size: 16px; }
.public-menu-actions {
  justify-self: end;
  gap: 8px;
  white-space: nowrap;
}
.public-header .portal-entry {
  min-height: 44px;
  padding: 0 13px;
  border: 1px solid rgba(21, 20, 25, .16);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 650;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}
.public-header .portal-entry:hover,
.public-header .portal-entry:focus-visible {
  color: var(--ink);
  background: white;
  border-color: rgba(21, 20, 25, .35);
  outline: 0;
}
.public-header .portal-entry svg { width: 17px; }
.portal-label-short { display: none; }
.public-menu .menu-contact {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 15px 0 17px;
  color: white;
  background: var(--violet);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 690;
  transition: background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.public-menu .menu-contact:hover,
.public-menu .menu-contact:focus-visible {
  background: #5732d0;
  box-shadow: 0 9px 22px rgba(104, 65, 227, .24);
  transform: translateY(-1px);
  outline: 0;
}
.public-menu .menu-contact svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.public-header .nav-toggle { display: none; }

@media (max-width: 1280px) {
  .portal-label-full { display: none; }
  .portal-label-short { display: inline; }
}

@media (max-width: 1160px) {
  .public-header .public-nav-wrap { width: calc(100% - 32px); gap: 18px; }
  .public-header .public-brand small { display: none; }
  .public-menu { gap: 12px; }
  .public-menu-link, .public-more-toggle { padding-inline: 9px; font-size: 11.5px; }
  .public-header .portal-entry { padding-inline: 11px; }
  .public-menu .menu-contact { padding-inline: 14px 12px; }
}

@media (max-width: 1020px) {
  body.nav-open { overflow: hidden; }
  .public-header .public-nav-wrap { grid-template-columns: 1fr auto; }
  .public-header .public-brand { grid-column: 1; }
  .public-header .public-brand small { display: block; }
  .public-header .nav-toggle {
    grid-column: 2;
    justify-self: end;
    width: 44px;
    height: 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 11px;
    background: white;
    border: 1px solid rgba(21, 20, 25, .14);
    border-radius: 10px;
    cursor: pointer;
  }
  .public-header .nav-toggle > span:not(.sr-only) {
    width: 20px;
    height: 1.5px;
    display: block;
    background: var(--ink);
    transition: transform .2s ease, opacity .2s ease;
  }
  .public-header .nav-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .public-header .nav-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .public-header .nav-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  .public-header .public-menu {
    position: fixed;
    inset: 82px 0 0;
    width: 100%;
    height: calc(100vh - 82px);
    height: calc(100dvh - 82px);
    display: none;
    grid-template-columns: 1fr;
    align-content: start;
    gap: 28px;
    padding: 26px max(24px, calc((100vw - 720px) / 2)) max(28px, env(safe-area-inset-bottom));
    color: var(--ink);
    background:
      radial-gradient(circle at 90% 10%, rgba(104, 65, 227, .11), transparent 31%),
      #f7f6f3;
    border: 0;
    border-top: 1px solid rgba(21, 20, 25, .1);
    box-shadow: none;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .public-header .public-menu.is-open { display: grid; }
  .public-menu-primary {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-self: stretch;
    gap: 0;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }
  .public-menu-primary::before {
    content: "Навигация";
    padding: 0 0 13px;
    color: var(--violet);
    border-bottom: 1px solid var(--ink);
    font-size: 9px;
    font-weight: 740;
    letter-spacing: .14em;
    text-transform: uppercase;
  }
  .public-menu-link {
    min-height: 64px;
    justify-content: space-between;
    padding: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 22px;
    font-weight: 620;
    letter-spacing: -.035em;
  }
  .public-menu-link::after { content: "↘"; color: var(--violet); font-size: 18px; font-weight: 450; }
  .public-menu-link:hover,
  .public-menu-link:focus-visible { color: var(--violet); background: transparent; }
  .public-more { width: 100%; }
  .public-more-toggle { display: none; }
  .public-more-menu {
    position: static;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 12px 0 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }
  .public-more-menu > a {
    min-height: 92px;
    padding: 16px;
    background: white;
    border: 1px solid rgba(21, 20, 25, .11);
    border-radius: 12px;
  }
  .public-more-menu > a + a { border-top: 1px solid rgba(21, 20, 25, .11); }
  .public-more-menu strong { font-size: 14px; }
  .public-more-menu small { font-size: 11px; }
  .public-menu-actions {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
    gap: 10px;
    justify-self: stretch;
  }
  .public-header .portal-entry,
  .public-menu .menu-contact {
    width: 100%;
    min-height: 54px;
    justify-content: center;
    margin: 0;
    font-size: 12px;
  }
  .public-header .portal-entry span.portal-label-full { display: inline; }
  .public-header .portal-entry span.portal-label-short { display: none; }
}

@media (max-width: 560px) {
  .public-header .public-nav-wrap { width: calc(100% - 28px); gap: 12px; }
  .public-header .public-brand-mark { width: 38px; height: 38px; border-radius: 10px; }
  .public-header .public-brand strong { font-size: 15px; }
  .public-header .public-brand small { font-size: 8px; }
  .public-header .public-menu {
    inset: 72px 0 0;
    height: calc(100vh - 72px);
    height: calc(100dvh - 72px);
    gap: 22px;
    padding: 22px 16px max(22px, env(safe-area-inset-bottom));
  }
  .public-menu-link { min-height: 57px; font-size: 20px; }
  .public-more-menu { grid-template-columns: 1fr; }
  .public-more-menu > a { min-height: 76px; padding: 13px 14px; }
  .public-menu-actions { grid-template-columns: 1fr; }
  .public-header .portal-entry,
  .public-menu .menu-contact { min-height: 50px; }
}

@media (prefers-reduced-motion: reduce) {
  .public-more-menu,
  .public-more-toggle svg,
  .public-menu-link,
  .public-menu .menu-contact { transition: none; }
}

/* Learning cycle: one visual story instead of repeated feature lists */
.learning-cycle-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 83% 2%, rgba(104, 65, 227, .22), transparent 34%),
    var(--ink);
}
.learning-cycle-section::after {
  content: "f(x)";
  position: absolute;
  right: -18px;
  bottom: -85px;
  color: rgba(255, 255, 255, .018);
  font: 760 250px/1 "Onest Math", "Onest", sans-serif;
  letter-spacing: -.09em;
  pointer-events: none;
}
.learning-cycle-section .public-container { position: relative; z-index: 1; }
.learning-cycle-head {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(340px, .65fr);
  align-items: end;
  gap: clamp(60px, 10vw, 160px);
  margin-bottom: 62px;
}
.learning-cycle-copy h2 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(48px, 5vw, 72px);
  font-weight: 680;
  line-height: .98;
  letter-spacing: -.06em;
  text-wrap: balance;
}
.learning-cycle-intro { max-width: 520px; }
.learning-cycle-intro > p {
  margin: 0;
  color: rgba(255, 255, 255, .62);
  font-size: 15px;
  line-height: 1.72;
}
.learning-cycle-intro > div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 27px;
  padding-top: 19px;
  border-top: 1px solid rgba(255, 255, 255, .18);
}
.learning-cycle-intro span {
  color: var(--signal);
  font-size: 9px;
  font-weight: 740;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.learning-cycle-intro strong { font-size: 14px; font-weight: 590; line-height: 1.45; }
.learning-cycle-board {
  position: relative;
  min-height: 540px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  align-items: center;
  gap: 118px 330px;
  padding: 38px 42px;
  background:
    linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px),
    rgba(255, 255, 255, .035);
  background-size: 46px 46px;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 22px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
  overflow: hidden;
}
.learning-cycle-path {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.learning-cycle-path > path {
  fill: none;
  stroke: rgba(216, 255, 87, .48);
  stroke-width: 1.4;
  stroke-dasharray: 5 7;
}
.learning-cycle-path marker path { fill: var(--signal); }
.learning-cycle-center {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 218px;
  height: 218px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: var(--ink);
  background: var(--signal);
  border: 10px solid rgba(21, 20, 25, .86);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(216, 255, 87, .3), 0 24px 65px rgba(0, 0, 0, .28);
  text-align: center;
  transform: translate(-50%, -50%);
}
.learning-cycle-center span {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.learning-cycle-center strong {
  margin-top: 13px;
  font-size: 24px;
  font-weight: 720;
  line-height: 1.08;
  letter-spacing: -.045em;
}
.learning-cycle-center small { max-width: 130px; margin-top: 12px; font-size: 9px; line-height: 1.4; }
.learning-cycle-step {
  position: relative;
  z-index: 2;
  width: min(100%, 305px);
  min-height: 150px;
  padding: 23px 24px 21px;
  background: rgba(31, 30, 36, .93);
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 15px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, .14);
}
.learning-cycle-step:nth-of-type(2),
.learning-cycle-step:nth-of-type(3) { justify-self: end; }
.learning-cycle-step > div { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.learning-cycle-step > div span { color: var(--signal); font-size: 11px; font-weight: 760; }
.learning-cycle-step > div small { color: rgba(255, 255, 255, .36); font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.learning-cycle-step h3 {
  margin: 28px 0 0;
  font-size: 21px;
  font-weight: 610;
  line-height: 1.15;
  letter-spacing: -.035em;
}
.learning-cycle-step p { margin: 9px 0 0; color: rgba(255, 255, 255, .5); font-size: 12px; line-height: 1.45; }
.cycle-step-one { grid-column: 1; grid-row: 1; }
.cycle-step-two { grid-column: 2; grid-row: 1; }
.cycle-step-three { grid-column: 2; grid-row: 2; }
.cycle-step-four { grid-column: 1; grid-row: 2; }

@media (max-width: 1120px) {
  .learning-cycle-head { gap: 55px; }
  .learning-cycle-board { gap: 100px 250px; padding-inline: 28px; }
  .learning-cycle-center { width: 190px; height: 190px; border-width: 8px; }
  .learning-cycle-center strong { font-size: 21px; }
  .learning-cycle-step { width: min(100%, 270px); }
}

@media (max-width: 820px) {
  .learning-cycle-head { grid-template-columns: 1fr; align-items: start; gap: 28px; margin-bottom: 42px; }
  .learning-cycle-intro { max-width: 650px; }
  .learning-cycle-board {
    min-height: 0;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    gap: 10px;
    padding: 14px;
    background-size: 36px 36px;
  }
  .learning-cycle-path { display: none; }
  .learning-cycle-center {
    position: static;
    grid-column: 1 / -1;
    width: 100%;
    height: auto;
    min-height: 150px;
    align-items: flex-start;
    padding: 25px;
    border: 0;
    border-radius: 13px;
    text-align: left;
    transform: none;
  }
  .learning-cycle-center small { max-width: none; }
  .cycle-step-one,
  .cycle-step-two,
  .cycle-step-three,
  .cycle-step-four { grid-column: auto; grid-row: auto; }
  .learning-cycle-step,
  .learning-cycle-step:nth-of-type(2),
  .learning-cycle-step:nth-of-type(3) { width: 100%; min-height: 155px; justify-self: stretch; }
}

@media (max-width: 560px) {
  .learning-cycle-copy h2 { font-size: clamp(38px, 11.5vw, 48px); }
  .learning-cycle-intro > p { font-size: 14px; }
  .learning-cycle-intro > div { grid-template-columns: 1fr; gap: 7px; }
  .learning-cycle-board { grid-template-columns: 1fr; padding: 9px; border-radius: 16px; }
  .learning-cycle-center { grid-column: 1; min-height: 136px; padding: 21px; }
  .learning-cycle-center strong { margin-top: 10px; font-size: 22px; }
  .learning-cycle-step,
  .learning-cycle-step:nth-of-type(2),
  .learning-cycle-step:nth-of-type(3) { min-height: 130px; padding: 19px; }
  .learning-cycle-step h3 { margin-top: 21px; font-size: 19px; }
}

/* Public presentation polish — October 2026 */
.hero h1 {
  max-width: 720px;
  font-size: clamp(58px, 5.6vw, 84px);
  line-height: .97;
  letter-spacing: -.052em;
}
.section-heading h2,
.section-intro h2,
.levels-heading h2,
.score-copy h2,
.process-sticky h2,
.pricing-heading h2,
.platform-heading h2,
.principles-grid h2,
.results-heading h2,
.contact-inner h2 {
  font-size: clamp(40px, 4.15vw, 62px);
  line-height: 1.035;
  letter-spacing: -.046em;
}
.about-heading h2 { font-size: clamp(38px, 3.6vw, 54px); }
.learning-cycle-copy h2 {
  font-size: clamp(44px, 4.5vw, 64px);
  line-height: 1.01;
  letter-spacing: -.048em;
}
.hero-lead { max-width: 670px; font-size: clamp(16px, 1.35vw, 18px); }
.hero-facts dd { max-width: 150px; color: #6d6a73; }
.section-intro > p:last-child,
.levels-heading > p,
.pricing-heading > p,
.platform-heading > p,
.results-heading > p { max-width: 520px; }

.public-button { text-align: center; }
.learning-cycle-head { align-items: center; }
.learning-cycle-board { min-height: 580px; gap: 132px 330px; }
.learning-cycle-step {
  min-height: 174px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.learning-cycle-step h3 {
  margin-top: 27px;
  font-size: 20px;
  line-height: 1.18;
  letter-spacing: -.028em;
}
.learning-cycle-step p {
  max-width: 250px;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.55;
}
.learning-cycle-center strong { letter-spacing: -.035em; }

.price-card h3,
.result-cases h3,
.start-steps strong { letter-spacing: -.032em; }
.price-value strong { letter-spacing: -.052em; }
.start-steps li { min-height: 220px; }
.start-steps strong { margin-top: 36px; }

.results-row { grid-template-columns: repeat(3, 1fr); }
.results-row > div {
  min-height: 166px;
  padding: 27px 28px 25px;
  border-bottom: 1px solid rgba(255, 255, 255, .2);
}
.results-row > div:nth-child(4) { padding-left: 0; border-left: 0; }
.results-row > div:nth-last-child(-n + 3) { border-bottom: 0; }
.results-row strong,
.results-row > div:nth-child(3) strong,
.results-row > div:nth-child(5) strong {
  font-size: clamp(42px, 4vw, 58px);
  letter-spacing: -.052em;
}
.results-row span { max-width: 210px; margin-top: 14px; line-height: 1.5; }

@media (max-width: 1120px) {
  .hero h1 { font-size: clamp(54px, 6.1vw, 72px); }
  .learning-cycle-board { gap: 112px 240px; }
}

@media (max-width: 820px) {
  .hero h1 { max-width: 620px; font-size: clamp(50px, 10.6vw, 70px); }
  .learning-cycle-board { min-height: 0; gap: 10px; }
  .learning-cycle-step,
  .learning-cycle-step:nth-of-type(2),
  .learning-cycle-step:nth-of-type(3) { min-height: 168px; }
  .results-row { grid-template-columns: 1fr 1fr; }
  .results-row > div,
  .results-row > div:nth-child(4) {
    padding: 24px 22px;
    border-bottom: 1px solid rgba(255, 255, 255, .2);
  }
  .results-row > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .results-row > div:nth-child(even) { border-left: 1px solid rgba(255, 255, 255, .2); }
  .results-row > div:nth-last-child(-n + 2) { border-bottom: 0; }
}

@media (max-width: 560px) {
  .section-space { padding-block: 64px; }
  .hero { padding-top: 110px; padding-bottom: 70px; }
  .hero h1 {
    font-size: clamp(42px, 12.3vw, 54px);
    line-height: 1;
    letter-spacing: -.048em;
  }
  .section-heading h2,
  .section-intro h2,
  .levels-heading h2,
  .score-copy h2,
  .process-sticky h2,
  .pricing-heading h2,
  .platform-heading h2,
  .principles-grid h2,
  .results-heading h2,
  .contact-inner h2,
  .learning-cycle-copy h2 {
    font-size: clamp(34px, 9.6vw, 42px);
    line-height: 1.04;
    letter-spacing: -.04em;
  }
  .hero-facts { margin-top: 42px; }
  .hero-facts dd { max-width: none; font-size: 10px; line-height: 1.45; }
  .learning-cycle-step,
  .learning-cycle-step:nth-of-type(2),
  .learning-cycle-step:nth-of-type(3) { min-height: 148px; }
  .learning-cycle-step h3 { margin-top: 21px; font-size: 20px; }
  .learning-cycle-step p { max-width: none; font-size: 13px; }
  .results-row > div,
  .results-row > div:nth-child(4) { min-height: 138px; padding: 20px 14px 21px; }
  .results-row strong,
  .results-row > div:nth-child(3) strong,
  .results-row > div:nth-child(5) strong { font-size: clamp(36px, 11vw, 46px); }
  .results-row span { margin-top: 11px; font-size: 11px; }
  .start-steps li { min-height: 0; padding: 24px 0; }
  .start-steps strong { margin-top: 22px; }
}