/* English OS — школа английского языка в Саратове */

:root {
    --bg: #fbf8f3;
    --surface: #ffffff;
    --surface-2: #f3eee6;
    --ink: #1d2138;
    --ink-2: #474c63;
    --muted: #767a8c;
    --line: #e8e2d8;

    --lavender: #ddd6ff;
    --lavender-2: #c4b9ff;
    --violet: #5a4bd6;
    --sun: #ffd25c;
    --mint: #c6ebd6;
    --coral: #ffb39c;
    --cream: #f4eee6;

    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --container: 1200px;
    --font: "Manrope", "Helvetica Neue", Arial, sans-serif;
    --display: "Unbounded", "Manrope", Arial, sans-serif;

    --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3.5 8.5l3 3 6-7' fill='none' stroke='%231d2138' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

h1,
h2,
h3 {
    margin: 0;
    font-family: var(--display);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

p {
    margin: 0;
}

ul,
ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

figure {
    margin: 0;
}

:focus-visible {
    outline: 3px solid var(--violet);
    outline-offset: 3px;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.page {
    flex: 1 0 auto;
}

/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(251, 248, 243, 0.86);
    border-bottom: 1px solid var(--line);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.site-header__inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    gap: 32px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--display);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
    text-decoration: none;
    white-space: nowrap;
}

.brand svg {
    flex: none;
    width: 36px;
    height: 36px;
}

.site-nav {
    display: flex;
    gap: 26px;
    margin-left: auto;
}

.site-nav a {
    color: var(--ink-2);
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    text-decoration-thickness: 3px;
    text-underline-offset: 7px;
    white-space: nowrap;
}

.site-nav a:hover {
    color: var(--ink);
    text-decoration-line: underline;
    text-decoration-color: var(--sun);
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 24px;
    border: 2px solid transparent;
    border-radius: 14px;
    font: inherit;
    font-size: 16px;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn svg {
    flex: none;
    width: 20px;
    height: 20px;
}

.btn--ink {
    background: var(--ink);
    color: #fff;
}

.btn--ink:hover {
    box-shadow: 0 12px 24px -12px rgba(29, 33, 56, 0.7);
}

.btn--sun {
    background: var(--sun);
    border-color: var(--ink);
    color: var(--ink);
}

.btn--sun:hover {
    box-shadow: 4px 4px 0 var(--ink);
}

.btn--outline {
    background: transparent;
    border-color: var(--ink);
    color: var(--ink);
}

.btn--outline:hover {
    background: var(--surface);
}

.btn--sm {
    min-height: 42px;
    padding: 0 18px;
    border-radius: 12px;
    font-size: 15px;
}

.btn--lg {
    min-height: 58px;
    padding: 0 30px;
    border-radius: 16px;
    font-size: 17px;
}

/* ---------- Shared bits ---------- */

.section {
    margin-top: 128px;
}

.section-head {
    max-width: 760px;
    margin-bottom: 44px;
}

.section-head h2 {
    font-size: 44px;
}

.section-head p {
    margin-top: 18px;
    font-size: 18px;
    color: var(--ink-2);
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    color: var(--violet);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.kicker::before {
    content: "";
    width: 22px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
}

.nowrap {
    white-space: nowrap;
}

.marker {
    padding: 0 0.06em;
    background: linear-gradient(transparent 56%, var(--sun) 56%, var(--sun) 92%, transparent 92%);
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px 7px 12px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
}

.eyebrow svg {
    width: 18px;
    height: 18px;
    color: var(--violet);
}

.sticker {
    position: absolute;
    z-index: 2;
    padding: 12px 18px;
    background: var(--surface);
    border: 2px solid var(--ink);
    border-radius: 18px;
    box-shadow: 4px 4px 0 var(--ink);
    font-size: 16px;
    font-weight: 800;
    line-height: 1.2;
    white-space: nowrap;
}

.sticker--sun {
    background: var(--sun);
}

.sticker--mint {
    background: var(--mint);
}

.sticker--bubble::after {
    content: "";
    position: absolute;
    left: 24px;
    bottom: -9px;
    width: 14px;
    height: 14px;
    background: inherit;
    border-right: 2px solid var(--ink);
    border-bottom: 2px solid var(--ink);
    transform: rotate(45deg);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tags li {
    padding: 4px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink-2);
    font-size: 13px;
    font-weight: 700;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.checklist {
    display: grid;
    gap: 14px;
    margin-top: 28px;
}

.checklist li {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    font-weight: 600;
}

.checklist li::before {
    content: "";
    width: 30px;
    height: 30px;
    background: var(--mint) var(--check) center / 14px no-repeat;
    border: 2px solid var(--ink);
    border-radius: 50%;
}

/* ---------- Hero ---------- */

.hero,
.page-head {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 48px;
    align-items: center;
    padding-top: 56px;
}

.hero h1,
.page-head h1 {
    margin-top: 22px;
    font-size: 54px;
    line-height: 1.1;
}

.hero__lead,
.page-head__lead {
    max-width: 33em;
    margin-top: 24px;
    font-size: 19px;
    color: var(--ink-2);
}

.hero__facts {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 26px;
    margin-top: 36px;
    font-size: 15px;
    font-weight: 700;
}

.hero__facts li {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.hero__facts li::before {
    content: "";
    flex: none;
    width: 24px;
    height: 24px;
    background: var(--mint) var(--check) center / 12px no-repeat;
    border-radius: 50%;
}

.visual {
    position: relative;
    height: 540px;
    display: grid;
    place-items: center;
}

.visual__halo {
    position: absolute;
    width: min(470px, calc(100% - 48px));
    aspect-ratio: 1;
    background: var(--lavender);
    border-radius: 50%;
}

.visual__halo::after {
    content: "";
    position: absolute;
    inset: -22px;
    border: 2px dashed var(--lavender-2);
    border-radius: 50%;
}

.visual__arch {
    position: relative;
    width: 310px;
    height: 440px;
    overflow: hidden;
    background: var(--cream);
    border: 3px solid var(--ink);
    border-radius: 160px 160px 28px 28px;
    box-shadow: 8px 8px 0 var(--ink);
}

.visual__arch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 18%;
}

.visual__q {
    top: 72px;
    left: 0;
    transform: rotate(-6deg);
}

.visual__a {
    right: 0;
    bottom: 86px;
    transform: rotate(4deg);
}

.visual__badge {
    position: absolute;
    z-index: 2;
    top: 34px;
    right: 7%;
    width: 98px;
    height: 98px;
    display: grid;
    place-items: center;
    background: var(--ink);
    border-radius: 50%;
    color: var(--sun);
    font-family: var(--display);
    font-size: 17px;
    line-height: 1.15;
    text-align: center;
    transform: rotate(12deg);
}

.visual .sticker,
.visual__badge {
    animation: float 3.2s ease-in-out infinite alternate;
}

.visual__a {
    animation-delay: -1.6s;
}

@keyframes float {
    from {
        translate: 0 0;
    }

    to {
        translate: 0 -8px;
    }
}

.visual--sm {
    height: 440px;
}

.visual--sm .visual__halo {
    width: min(380px, calc(100% - 48px));
}

.visual--sm .visual__arch {
    width: 250px;
    height: 350px;
}

.visual--sm .visual__q {
    top: 54px;
    left: 4%;
}

/* ---------- Levels ---------- */

.stairs {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    align-items: end;
}

.stair {
    min-height: 250px;
    padding: 22px 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: var(--mint);
    border: 2px solid var(--ink);
    border-radius: 22px;
}

.stair:nth-child(2) {
    min-height: 285px;
    background: #e3f2c8;
}

.stair:nth-child(3) {
    min-height: 320px;
    background: #fff0bf;
}

.stair:nth-child(4) {
    min-height: 355px;
    background: #ffdccf;
}

.stair:nth-child(5) {
    min-height: 390px;
    background: var(--lavender);
}

.stair__code {
    font-family: var(--display);
    font-size: 38px;
    line-height: 1;
}

.stair__name {
    color: var(--ink-2);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.stair p {
    margin-top: auto;
    font-size: 15px;
    line-height: 1.5;
}

/* ---------- Programs ---------- */

.programs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.program {
    display: flex;
    flex-direction: column;
    padding: 12px;
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: var(--radius-lg);
}

.program__img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 16px;
}

.program__body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 18px 10px 10px;
}

.program h3 {
    font-size: 20px;
}

.program p {
    font-size: 15.5px;
    color: var(--ink-2);
}

.program .tags {
    margin-top: auto;
    padding-top: 6px;
}

.program--cta {
    justify-content: center;
    gap: 16px;
    padding: 32px 28px;
    background: var(--ink);
    border-color: var(--ink);
    color: #fff;
}

.program--cta svg {
    width: 64px;
    height: 56px;
}

.program--cta h3 {
    font-size: 26px;
}

.program--cta p {
    color: rgba(255, 255, 255, 0.75);
}

.program--cta .btn {
    align-self: flex-start;
    margin-top: 8px;
}

/* ---------- Lesson timeline ---------- */

.timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 24px;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 32px;
    left: 32px;
    right: 12%;
    border-top: 2px dashed var(--ink);
    opacity: 0.3;
}

.timeline li {
    position: relative;
}

.timeline__icon {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    margin-bottom: 22px;
    background: var(--mint);
    border: 2px solid var(--ink);
    border-radius: 50%;
}

.timeline li:nth-child(2) .timeline__icon {
    background: var(--sun);
}

.timeline li:nth-child(3) .timeline__icon {
    background: var(--lavender);
}

.timeline li:nth-child(4) .timeline__icon {
    background: var(--coral);
}

.timeline__icon svg {
    width: 28px;
    height: 28px;
}

.timeline__step {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.timeline h3 {
    font-size: 18px;
}

.timeline p {
    margin-top: 8px;
    font-size: 15px;
    color: var(--ink-2);
}

/* ---------- Principles ---------- */

.principles {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.principle {
    padding: 28px 24px;
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: var(--radius-lg);
}

.principle__num {
    display: block;
    margin-bottom: 26px;
    color: transparent;
    font-family: var(--display);
    font-size: 48px;
    line-height: 1;
    -webkit-text-stroke: 1.5px var(--ink);
}

.principle h3 {
    font-size: 19px;
}

.principle p {
    margin-top: 10px;
    font-size: 15.5px;
    color: var(--ink-2);
}

/* ---------- Split sections ---------- */

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 64px;
    align-items: center;
}

.split__art {
    position: relative;
}

.split__art img {
    width: 100%;
    border: 3px solid var(--ink);
    border-radius: var(--radius-xl);
    box-shadow: 8px 8px 0 var(--ink);
}

.split__art .sticker {
    right: 28px;
    bottom: -20px;
    transform: rotate(-4deg);
}

.split--practice .split__art {
    max-width: 500px;
}

.split h2 {
    font-size: 40px;
}

.split__text > p {
    margin-top: 18px;
    font-size: 18px;
    color: var(--ink-2);
}

.club {
    padding: 56px;
    background: var(--lavender);
    border-radius: var(--radius-xl);
}

.club .kicker {
    color: var(--ink);
}

.facts {
    display: grid;
    margin: 28px 0 32px;
}

.facts div {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(29, 33, 56, 0.16);
}

.facts dt {
    color: var(--ink-2);
    font-weight: 600;
}

.facts dd {
    margin: 0;
    font-weight: 800;
}

/* ---------- FAQ ---------- */

.faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 56px;
    align-items: start;
}

.faq-layout .section-head {
    position: sticky;
    top: 112px;
    margin-bottom: 0;
}

.faq-layout .section-head .btn {
    margin-top: 28px;
}

.faq {
    display: grid;
    gap: 12px;
}

.faq details {
    padding: 0 24px;
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: 20px;
    transition: border-color 0.2s;
}

.faq details[open] {
    border-color: var(--ink);
}

.faq summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 0;
    font-size: 17px;
    font-weight: 800;
    line-height: 1.35;
    list-style: none;
    cursor: pointer;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary::after {
    content: "";
    flex: none;
    width: 30px;
    height: 30px;
    background: var(--sun) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4' fill='none' stroke='%231d2138' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 13px no-repeat;
    border-radius: 50%;
    transition: transform 0.2s;
}

.faq details[open] summary::after {
    transform: rotate(180deg);
}

.faq details p {
    padding-bottom: 22px;
    color: var(--ink-2);
}

/* ---------- Call to action ---------- */

.cta {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 40px;
    align-items: center;
    padding: 56px;
    background: var(--ink);
    border-radius: var(--radius-xl);
    color: #fff;
}

.cta .kicker {
    color: var(--sun);
}

.cta h2 {
    font-size: 42px;
}

.cta__text > p {
    margin-top: 18px;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.78);
}

.cta__steps {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 28px 0 34px;
}

.cta__steps li {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 16px 7px 7px;
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
}

.cta__steps b {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    background: var(--sun);
    border-radius: 50%;
    color: var(--ink);
    font-size: 13px;
}

.cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 22px;
    align-items: center;
}

.cta__bubble {
    position: relative;
    justify-self: center;
    padding: 34px 40px;
    background: var(--sun);
    border-radius: 36px;
    color: var(--ink);
    font-family: var(--display);
    font-size: 34px;
    line-height: 1.1;
    white-space: nowrap;
    transform: rotate(-5deg);
}

.cta__bubble::after {
    content: "";
    position: absolute;
    left: 42px;
    bottom: -20px;
    border-top: 24px solid var(--sun);
    border-right: 26px solid transparent;
}

/* ---------- Contacts ---------- */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-top: 72px;
}

.contact-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 26px 24px;
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: var(--radius-lg);
}

.contact-card__icon {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    margin-bottom: 18px;
    background: var(--lavender);
    border: 2px solid var(--ink);
    border-radius: 50%;
}

.contact-card__icon--sun {
    background: var(--sun);
}

.contact-card__icon--mint {
    background: var(--mint);
}

.contact-card__icon--coral {
    background: var(--coral);
}

.contact-card__icon svg {
    width: 24px;
    height: 24px;
}

.contact-card h2 {
    font-size: 19px;
}

.contact-card p {
    font-size: 15.5px;
    color: var(--ink-2);
}

.contact-card__link {
    margin-top: auto;
    padding-top: 12px;
    font-weight: 800;
    text-decoration-color: var(--sun);
    text-decoration-thickness: 3px;
    text-underline-offset: 5px;
}

.person {
    display: flex;
    align-items: center;
    gap: 22px;
    margin-top: 16px;
    padding: 22px 26px;
    background: var(--surface);
    border: 2px solid var(--line);
    border-radius: var(--radius-lg);
}

.person img {
    flex: none;
    width: 88px;
    height: 88px;
    object-fit: cover;
    border: 2px solid var(--ink);
    border-radius: 50%;
}

.person h2 {
    font-size: 20px;
}

.person p {
    margin-top: 4px;
    color: var(--ink-2);
}

/* ---------- 404 ---------- */

.not-found__code {
    color: transparent;
    font-family: var(--display);
    font-size: 120px;
    line-height: 1;
    -webkit-text-stroke: 2px var(--ink);
}

/* ---------- Footer ---------- */

.site-footer {
    margin-top: 128px;
    padding: 56px 0 36px;
    border-top: 1px solid var(--line);
    font-size: 15px;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
}

.site-footer__about p {
    max-width: 360px;
    margin-top: 14px;
    color: var(--muted);
}

.site-footer h2 {
    margin-bottom: 14px;
    color: var(--muted);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.site-footer__links {
    display: grid;
    align-content: start;
    gap: 8px;
}

.site-footer__links a {
    color: var(--ink-2);
    font-weight: 600;
    text-decoration: none;
}

.site-footer__links a:hover {
    color: var(--ink);
    text-decoration: underline;
    text-decoration-color: var(--sun);
    text-decoration-thickness: 3px;
    text-underline-offset: 5px;
}

.social {
    display: flex;
    gap: 8px;
    margin-top: 18px;
}

.social a {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    background: var(--lavender);
    border: 2px solid var(--ink);
    border-radius: 50%;
}

.social svg {
    width: 20px;
    height: 20px;
}

.site-footer__bottom {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
    .site-header__inner {
        gap: 20px;
    }

    .site-nav {
        gap: 16px;
    }

    .site-nav a {
        font-size: 14px;
    }

    .hero h1,
    .page-head h1 {
        font-size: 44px;
    }

    .principles {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .contact-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 1000px) {
    .site-header {
        position: static;
    }

    .site-header__inner {
        flex-wrap: wrap;
        row-gap: 4px;
        padding-top: 12px;
        padding-bottom: 6px;
    }

    .site-nav {
        order: 3;
        width: calc(100% + 40px);
        margin: 0 -20px;
        padding: 6px 20px 8px;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .site-nav::-webkit-scrollbar {
        display: none;
    }

    .site-header .btn {
        margin-left: auto;
    }
}

@media (max-width: 960px) {
    .stairs {
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
    }

    .stair,
    .stair:nth-child(n) {
        min-height: 0;
        display: grid;
        grid-template-columns: 64px minmax(0, 1fr);
        column-gap: 16px;
        align-items: center;
    }

    .stair:nth-child(2) {
        margin-left: 12px;
    }

    .stair:nth-child(3) {
        margin-left: 24px;
    }

    .stair:nth-child(4) {
        margin-left: 36px;
    }

    .stair:nth-child(5) {
        margin-left: 48px;
    }

    .stair__code {
        grid-row: span 2;
        font-size: 30px;
    }

    .stair p {
        margin-top: 2px;
    }

    .programs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .timeline {
        grid-template-columns: minmax(0, 1fr);
        gap: 18px;
    }

    .timeline::before {
        top: 32px;
        bottom: 32px;
        left: 31px;
        right: auto;
        border-top: 0;
        border-left: 2px dashed var(--ink);
    }

    .timeline li {
        display: grid;
        grid-template-columns: 64px minmax(0, 1fr);
        column-gap: 18px;
    }

    .timeline__icon {
        grid-row: span 3;
        margin-bottom: 0;
    }
}

@media (max-width: 900px) {
    .hero,
    .page-head,
    .split,
    .faq-layout,
    .cta {
        grid-template-columns: minmax(0, 1fr);
    }

    .section {
        margin-top: 96px;
    }

    .section-head h2,
    .split h2 {
        font-size: 34px;
    }

    .split {
        gap: 44px;
    }

    .split--practice .split__art {
        max-width: 420px;
    }

    .faq-layout {
        gap: 28px;
    }

    .faq-layout .section-head {
        position: static;
    }

    .club {
        padding: 36px 28px;
    }

    .cta {
        padding: 40px 32px;
    }

    .cta__bubble {
        display: none;
    }

    .site-footer__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-footer__about {
        grid-column: span 2;
    }
}

@media (max-width: 640px) {
    body {
        font-size: 16px;
    }

    .brand {
        font-size: 16px;
    }

    .brand svg {
        width: 32px;
        height: 32px;
    }

    .hero,
    .page-head {
        padding-top: 32px;
        gap: 24px;
    }

    .hero h1,
    .page-head h1 {
        font-size: 31px;
    }

    .hero__lead,
    .page-head__lead {
        font-size: 17px;
    }

    .hero .btn--lg,
    .page-head .btn--lg {
        flex: 1 1 100%;
    }

    .visual {
        height: 420px;
    }

    .visual__halo,
    .visual--sm .visual__halo {
        width: min(330px, calc(100% - 48px));
    }

    .visual__arch {
        width: 220px;
        height: 310px;
        border-radius: 110px 110px 22px 22px;
    }

    .visual__q {
        top: 40px;
    }

    .visual__a {
        bottom: 56px;
    }

    .visual__badge {
        top: 12px;
        right: 2%;
        width: 78px;
        height: 78px;
        font-size: 14px;
    }

    .sticker {
        padding: 10px 14px;
        font-size: 14px;
    }

    .section {
        margin-top: 80px;
    }

    .section-head {
        margin-bottom: 30px;
    }

    .section-head h2,
    .split h2,
    .cta h2 {
        font-size: 28px;
    }

    .section-head p,
    .split__text > p,
    .cta__text > p {
        font-size: 16.5px;
    }

    .stair:nth-child(n) {
        margin-left: 0;
    }

    .programs,
    .principles,
    .contact-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .club {
        padding: 28px 20px;
    }

    .cta {
        padding: 32px 22px;
    }

    .cta .btn {
        width: 100%;
    }

    .faq details {
        padding: 0 18px;
    }

    .faq summary {
        font-size: 16px;
    }

    .not-found__code {
        font-size: 84px;
    }

    .site-footer {
        margin-top: 96px;
    }

    .site-footer__grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .site-footer__about {
        grid-column: auto;
    }
}

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

    .visual .sticker,
    .visual__badge {
        animation: none;
    }

    .btn,
    .faq summary::after {
        transition: none;
    }
}