:root {
    --color-bg: #ffffff;
    --color-surface: #ffffff;
    --color-text: #111111;
    --color-muted: #5f6368;
    --color-soft: #f6f7f8;
    --color-border: #e6e8eb;
    --color-accent: #0b57d0;
    --color-lime: #c7ff4a;
    --color-ink: #101820;
    --shadow-card: 0 16px 40px rgba(17, 17, 17, 0.05);
    --max-width: 1120px;
    --narrow-width: 720px;
    --radius: 8px;
    --space-page: 24px;
    --space-section: 64px;
}

/* Acerca de */
.about-hero { padding: 100px 0 86px; background: var(--color-ink); color: white; }
.about-hero__grid { display: grid; gap: 48px; align-items: end; }
.about-hero h1 { margin: 0; font-size: clamp(3.5rem, 8vw, 7rem); }
.about-hero__statement { max-width: 440px; padding-bottom: 10px; }
.about-hero__statement p { margin-bottom: 30px; color: #c2c9ce; font-size: 1.25rem; }
.about-purpose__grid, .about-focus__grid { display: grid; gap: 36px; }
.about-index { display: block; margin-bottom: 28px; color: #8b9690; font-size: .8rem; font-weight: 800; letter-spacing: .12em; }
.about-purpose h2 { max-width: 820px; }
.about-purpose p { max-width: 720px; }
.about-principles { background: #eef1eb; }
.principles-grid { display: grid; gap: 1px; border: 1px solid #d9ded7; background: #d9ded7; }
.principles-grid article { min-height: 290px; padding: 30px; background: white; }
.principles-grid article > span { display: block; margin-bottom: 68px; color: var(--color-accent); font-size: .78rem; font-weight: 800; }
.principles-grid article p, .focus-list p { color: var(--color-muted); }
.focus-list { border-top: 2px solid var(--color-ink); }
.focus-list > div { display: grid; gap: 8px; padding: 25px 0; border-bottom: 1px solid var(--color-border); }
.focus-list strong { font-size: 1.25rem; }
.focus-list p { margin: 0; }
.about-closing { padding: 82px 0; background: var(--color-accent); color: white; }
.about-closing__inner { display: flex; flex-direction: column; gap: 38px; align-items: flex-start; justify-content: space-between; }
.about-closing .eyebrow { color: var(--color-lime); }
.about-closing h2 { margin-bottom: 14px; font-size: clamp(2.7rem, 6vw, 5rem); }
.about-closing p { margin: 0; color: #d9e5fb; font-size: 1.1rem; }
.about-closing__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button--outline-light { border: 1px solid rgba(255,255,255,.65); color: white; }

@media (min-width: 821px) {
    .about-hero__grid { grid-template-columns: 1.55fr .65fr; }
    .about-purpose__grid, .about-focus__grid { grid-template-columns: .5fr 1.5fr; }
    .principles-grid { grid-template-columns: repeat(4, 1fr); }
    .about-closing__inner { flex-direction: row; align-items: end; }
}

@media (max-width: 820px) {
    .about-hero { padding: 42px 0; }
    .about-hero__grid { gap: 26px; }
    .about-hero h1 { font-size: clamp(2.7rem, 13vw, 4rem); }
    .about-hero__statement p { margin-bottom: 20px; font-size: 1rem; }
    .about-purpose__grid, .about-focus__grid { gap: 20px; }
    .about-index { margin-bottom: 12px; }
    .principles-grid article { min-height: 220px; padding: 22px; }
    .principles-grid article > span { margin-bottom: 35px; }
    .focus-list > div { padding: 19px 0; }
    .about-closing { padding: 44px 0; }
    .about-closing h2 { font-size: 2.35rem; }
}

.eyebrow { display: block; margin-bottom: 18px; color: var(--color-accent); font-size: .76rem; font-weight: 750; letter-spacing: .14em; }
.text-accent { color: var(--color-accent); }
.back-link { display: inline-block; margin-bottom: 42px; color: var(--color-muted); font-size: .92rem; font-weight: 600; }
.back-link:hover { color: var(--color-accent); }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; width: fit-content; border: 0; border-radius: 7px; padding: 15px 19px; font-weight: 700; line-height: 1; transition: transform .16s ease, box-shadow .16s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(16,24,32,.15); }
.button--dark { background: var(--color-ink); color: white; }
.button--accent { background: var(--color-lime); color: var(--color-ink); }
.button--light { background: white; color: var(--color-ink); }
.button--disabled { background: #53606a; color: #d2d8dc; cursor: not-allowed; }
.section--soft { background: #f4f6f2; }
.tutors-section { background: #eef1eb; border-top: 1px solid #dce1d8; }
.tutors-section .section-heading > p { color: #4d5650; }
.tutors-section .section-heading > p strong { color: var(--color-ink); font-size: 1.05rem; }

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration: none;
}

.page {
    min-height: 100vh;
}

.container {
    width: min(100% - (var(--space-page) * 2), var(--max-width));
    margin-inline: auto;
}

.narrow {
    max-width: var(--narrow-width);
}

.site-header {
    border-bottom: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.92);
}

.header-inner {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 18px 0;
}

.brand,
.footer-brand {
    font-weight: 650;
    letter-spacing: 0;
}

.brand {
    display: inline-flex;
    align-items: center;
}

.brand img {
    display: block;
    width: 158px;
    height: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 6px 18px;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.main-nav a {
    border-radius: 999px;
    padding: 6px 0;
    transition: color 160ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.card-link:hover,
.card-link:focus-visible {
    color: var(--color-accent);
}

.hero {
    padding: 80px 0 64px;
}

.hero-inner {
    max-width: 860px;
}

.hero-home {
    display: grid;
    max-width: var(--max-width);
    gap: 48px;
    align-items: center;
}

.hero-home__wordmark {
    display: block;
    width: min(100%, 390px);
    height: auto;
    margin-bottom: 42px;
    mix-blend-mode: multiply;
}

.hero-home__visual {
    position: relative;
    display: grid;
    place-items: center;
    isolation: isolate;
    aspect-ratio: 1;
    border-radius: 32px;
    background: linear-gradient(145deg, #f2f5ef, #ffffff 62%);
    box-shadow: 0 30px 80px rgba(16, 24, 32, 0.09);
    overflow: hidden;
}

.hero-home__visual::before {
    position: absolute;
    z-index: -1;
    width: 72%;
    aspect-ratio: 1;
    border-radius: 50%;
    background: var(--color-lime);
    content: "";
    filter: blur(2px);
}

.hero-home__visual img {
    display: block;
    width: 70%;
    height: auto;
    mix-blend-mode: multiply;
}

.hero-home__orbit {
    position: absolute;
    inset: 8%;
    z-index: -1;
    border: 1px solid rgba(16, 24, 32, 0.14);
    border-radius: 50%;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 820px;
    margin-bottom: 24px;
    font-size: 3rem;
    line-height: 1;
    font-weight: 700;
    letter-spacing: 0;
}

h2 {
    margin-bottom: 18px;
    font-size: 2rem;
    line-height: 1.05;
    font-weight: 650;
    letter-spacing: 0;
}

h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
    line-height: 1.25;
    font-weight: 650;
    letter-spacing: 0;
}

.hero p,
.lead {
    color: var(--color-muted);
    font-size: 1.15rem;
    line-height: 1.55;
}

.hero p {
    max-width: 720px;
    margin-bottom: 0;
}

.section {
    padding: var(--space-section) 0;
}

.section p {
    color: var(--color-muted);
    margin-bottom: 0;
}

.section .lead {
    margin-bottom: 16px;
    color: var(--color-text);
}

.cards-section {
    padding-top: 40px;
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.card {
    display: flex;
    min-height: 210px;
    flex-direction: column;
    padding: 28px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
    cursor: pointer;
}

.card:focus-visible,
.language-card:focus-visible,
.tutor-card:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}

.card:hover {
    border-color: #d3d7dc;
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.card p {
    margin-bottom: 28px;
    color: var(--color-muted);
}

.card-link {
    margin-top: auto;
    color: var(--color-text);
    font-weight: 600;
    transition: color 160ms ease;
}

.closing {
    padding: 48px 0 72px;
}

.closing p {
    max-width: 760px;
    margin-bottom: 0;
    font-size: 1.65rem;
    line-height: 1.12;
    font-weight: 650;
    letter-spacing: 0;
}

.site-footer {
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
}

.footer-inner {
    display: grid;
    gap: 4px;
    padding: 32px 0;
    font-size: 0.95rem;
}

.footer-inner p {
    margin-bottom: 0;
}

.footer-brand {
    color: var(--color-text);
}

.language-page {
    background: var(--color-bg);
}

.language-hero {
    padding: 80px 0 48px;
}
.language-hero { position: relative; overflow: hidden; background: linear-gradient(135deg,#f7f9f2 0%,#fff 68%); }
.language-hero::after { position: absolute; right: -80px; bottom: -170px; width: 390px; height: 390px; border: 70px solid var(--color-lime); border-radius: 50%; content: ""; opacity: .55; }
.language-hero__inner { position: relative; z-index: 1; }

.language-hero__inner {
    max-width: 900px;
}

.language-hero p {
    max-width: 760px;
    margin-bottom: 0;
    color: var(--color-muted);
    font-size: 1.15rem;
    line-height: 1.55;
}

.language-hero__secondary {
    margin-top: 18px;
}

.language-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.language-card {
    display: flex;
    min-height: 260px;
    flex-direction: column;
    padding: 28px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
    cursor: pointer;
}

.language-card:hover {
    border-color: #d3d7dc;
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.language-card--featured {
    background: var(--color-ink);
    color: white;
}
.language-card--featured .language-card__content p { color: #b8c1c8; }
.language-card--featured .language-card__status { border-color: #42505b; color: var(--color-lime); }
.language-card--featured .language-card__link { color: var(--color-lime); }

.language-detail__hero { padding: 54px 0 88px; background: var(--color-ink); color: white; }
.language-detail__hero .back-link { color: #aeb7be; }
.language-detail__intro { display: grid; gap: 28px; align-items: end; }
.language-detail__brand { align-self: center; }
.tutor-logo--index { width: 248px; height: 248px; border: 4px solid rgba(255,255,255,.18); box-shadow: 0 18px 45px rgba(0,0,0,.3); }
.language-detail__intro h1 { margin: 0; font-size: clamp(3.2rem,8vw,6.8rem); }
.language-detail__aside { display: flex; flex-direction: column; gap: 18px; align-items: center; }
.language-detail__aside > p { max-width: 430px; margin: 0 0 8px; color: #b9c1c6; font-size: 1.18rem; }
.level-test-section { padding: 52px 0 10px; background: #f4f6f2; }
.level-test-card { position: relative; display: grid; gap: 24px; align-items: center; overflow: hidden; border: 3px solid var(--color-ink); border-radius: 18px; padding: 30px; background: var(--color-lime); box-shadow: 9px 9px 0 var(--color-ink); }
.level-test-card::after { position: absolute; top: -90px; right: 15%; width: 210px; height: 210px; border: 42px solid rgba(255,255,255,.28); border-radius: 50%; content: ""; }
.level-test-card__icon { position: relative; z-index: 1; display: grid; place-items: center; width: 128px; height: 128px; overflow: hidden; border: 3px solid var(--color-ink); border-radius: 50%; background: var(--color-ink); color: var(--color-lime); font-size: 3rem; font-weight: 850; box-shadow: 0 8px 0 rgba(255,255,255,.65); }
.level-test-card__icon img { display: block; width: 100%; height: 100%; object-fit: cover; }
.level-test-card__copy { position: relative; z-index: 1; }
.level-test-card .eyebrow { color: var(--color-accent); }
.level-test-card h2 { margin: 4px 0 8px; font-size: clamp(2rem,4vw,3.5rem); }
.level-test-card p { max-width: 700px; margin: 0; color: #293038; font-size: 1.05rem; }
.level-test-card .button { position: relative; z-index: 1; justify-self: start; white-space: nowrap; }
.level-test-card__free { position: absolute; z-index: 2; top: 14px; right: 16px; border-radius: 999px; padding: 7px 11px; background: var(--color-ink); color: #fff; font-size: .72rem; font-weight: 850; letter-spacing: .09em; }
.level-test-card:hover { transform: translateY(-4px); box-shadow: 9px 13px 0 var(--color-ink); }

.test-landing__hero { padding: 58px 0 86px; background: var(--color-ink); color: #fff; }
.test-landing__hero-grid { display: grid; gap: 42px; align-items: center; }
.test-landing__hero h1 { max-width: 850px; margin: 24px 0 20px; font-size: clamp(3rem,7vw,6.2rem); }
.test-landing__lead { max-width: 720px; color: #bbc3c9; font-size: 1.22rem; }
.test-free-badge { display: table; margin: 20px 0 14px; border-radius: 999px; padding: 8px 13px; background: var(--color-lime); color: var(--color-ink); font-size: .78rem; font-weight: 900; letter-spacing: .09em; }
.test-landing__logo { justify-self: center; width: min(310px,75vw); overflow: hidden; border: 5px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 24px 70px rgba(0,0,0,.4); }
.test-landing__logo img { display: block; width: 100%; height: auto; }
.test-landing__note { margin-top: 16px; color: #97a3ab; font-size: .82rem; }
.test-content { background: #f4f6f2; }
.test-content__intro { max-width: 840px; }
.test-content__intro p { color: var(--color-muted); font-size: 1.08rem; }
.test-benefits,.test-levels { display: grid; gap: 18px; margin-top: 38px; }
.test-benefits article,.test-levels article { border: 1px solid #dce1d9; border-radius: 12px; padding: 25px; background: #fff; }
.test-benefits article > span,.test-levels article > span { display: inline-grid; place-items: center; min-width: 42px; height: 34px; margin-bottom: 22px; border-radius: 999px; padding: 0 10px; background: var(--color-lime); color: var(--color-ink); font-weight: 850; }
.test-benefits h3,.test-levels h3 { margin-bottom: 8px; }
.test-benefits p,.test-levels p { margin: 0; color: var(--color-muted); }
.test-section-block { padding: 72px 0; }
.test-section-block--white { background: #fff; }
.test-section-block__heading { max-width: 760px; margin-bottom: 34px; }
.test-section-block__heading p { color: var(--color-muted); }
.test-prose-grid { display: grid; gap: 44px; }
.test-prose-grid > div { max-width: 680px; }
.test-prose-grid p { color: var(--color-muted); font-size: 1.05rem; }
.text-link--dark { display: inline-block; border-color: #9ba49b; color: var(--color-accent); }
.test-checklist { display: grid; gap: 13px; max-width: 820px; margin: 0; padding: 0; list-style: none; }
.test-checklist li { position: relative; border-bottom: 1px solid #e0e4de; padding: 0 0 13px 32px; }
.test-checklist li::before { position: absolute; left: 0; color: var(--color-accent); content: "✓"; font-weight: 900; }
.test-disclaimer { border-left: 6px solid var(--color-lime); padding: 24px 28px; background: var(--color-ink); color: #fff; }
.test-disclaimer p { margin: 8px 0 0; color: #bbc3c9; }
.test-final-cta { text-align: center; }
.test-final-cta .container { align-items: center; }
.test-final-cta h2 { max-width: 850px; }
.test-final-cta p { max-width: 650px; }
.section-heading { display: flex; flex-direction: column; gap: 12px; margin-bottom: 40px; }
.section-heading h2 { margin: 0; }
.section-heading p { max-width: 370px; }
.tutor-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
.tutor-card { position: relative; display: flex; min-height: 430px; overflow: hidden; flex-direction: column; background: #fff; border: 3px solid var(--color-ink); border-radius: 16px; box-shadow: 9px 9px 0 var(--color-lime); transition: transform .18s ease, box-shadow .18s ease; }
.tutor-card:hover { transform: translateY(-5px); box-shadow: 8px 13px 0 var(--color-lime); }
.tutor-card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; padding: 28px 28px 0; }
.tutor-logo { display: inline-flex; flex: 0 0 auto; overflow: hidden; border-radius: 50%; background: #fff; }
.tutor-logo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.tutor-logo--card { width: 82px; height: 82px; border: 2px solid rgba(17,17,17,.12); box-shadow: 0 8px 22px rgba(17,17,17,.14); }
.badge-row { display: flex; gap: 9px; align-items: center; }
.tutor-card__level { color: var(--color-ink); font-size: 3.6rem; font-weight: 800; line-height: .9; letter-spacing: -.06em; }
.level-badge,.free-badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 7px 11px; font-size: .75rem; font-weight: 800; letter-spacing: .08em; }
.level-badge { background: var(--color-ink); color: white; }
.free-badge { background: var(--color-lime); color: var(--color-ink); }
.tutor-card__body { padding: 28px 28px 28px; }
.tutor-card__label { margin: 0 0 8px!important; color: var(--color-accent)!important; font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.tutor-card h3 { margin-bottom: 16px; font-size: 1.85rem; line-height: 1.1; }
.tutor-card__body > p:last-child { color: var(--color-muted); }
.tutor-card__cta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding: 19px 28px; background: var(--color-ink); color: white; font-weight: 750; transition: background .16s ease, color .16s ease; }
.tutor-card__cta span:last-child { color: var(--color-lime); font-size: 1.35rem; transition: transform .16s ease; }
.tutor-card__cta:hover { background: var(--color-accent); }
.tutor-card__cta:hover span:last-child { transform: translateX(5px); }

.tutor-hero { padding: 54px 0 90px; background: var(--color-ink); color: white; }
.tutor-hero__grid { display: grid; gap: 55px; align-items: center; }
.tutor-hero__visual { position: relative; padding-top: 72px; }
.tutor-logo--hero { position: absolute; z-index: 2; top: 0; left: 50%; width: 144px; height: 144px; border: 5px solid #17232c; box-shadow: 0 18px 45px rgba(0,0,0,.35); transform: translateX(-50%); }
.tutor-logo--avatar { width: 42px; height: 42px; border: 2px solid rgba(255,255,255,.18); }
.tutor-hero__copy h1 { margin: 25px 0; font-size: clamp(3rem,6vw,5.5rem); }
.tutor-hero__copy > p { max-width: 630px; color: #bbc3c9; font-size: 1.16rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; margin-top: 35px; }
.text-link { border-bottom: 1px solid #64717a; padding: 7px 0; font-weight: 650; }
.microcopy { margin-top: 20px!important; font-size: .8rem!important; }
.conversation-preview { padding: 22px; border: 1px solid #394650; border-radius: 16px; background: #17232c; box-shadow: 0 25px 70px rgba(0,0,0,.25); }
.conversation-preview__header { display: flex; gap: 12px; align-items: center; margin-bottom: 30px; padding-bottom: 18px; border-bottom: 1px solid #34414a; }
.conversation-preview__header div { display: grid; }.conversation-preview small { color: #a9b3ba; }.conversation-preview small i,.demo-status i { display:inline-block;width:7px;height:7px;margin-right:5px;border-radius:50%;background:#67e27e; }
.avatar { display: grid; place-items: center; width: 38px; height: 38px; flex: 0 0 auto; border-radius: 10px; background: var(--color-lime); color: var(--color-ink); font-weight: 800; }
.chat-bubble { max-width: 82%; margin: 12px 0; border-radius: 12px; padding: 12px 15px; font-size: .92rem; }.chat-bubble--tutor { background: #26343e; }.chat-bubble--user { margin-left: auto; background: var(--color-accent); }
.chat-input { display:flex;justify-content:space-between;margin-top:28px;border:1px solid #3b4851;border-radius:9px;padding:13px;color:#7f8b94;font-size:.9rem; }.chat-input span{color:var(--color-lime)}
.feature-grid { display:grid;gap:1px;background:#dfe3dc;border:1px solid #dfe3dc; }.feature-grid article { padding:32px;background:#f4f6f2; }.feature-grid article > span { display:block;margin-bottom:45px;color:var(--color-accent);font-size:.8rem;font-weight:800; }.feature-grid p{margin:0;color:var(--color-muted)}
.cta-section { padding:70px 0;background:var(--color-accent);color:white; }.cta-section .container{display:flex;flex-direction:column;gap:30px;align-items:flex-start;justify-content:space-between}.cta-section .eyebrow{color:var(--color-lime)}.cta-section h2{margin-bottom:8px}.cta-section p{margin:0;color:#d9e5fb}
.tutor-final-cta h2 { max-width: 760px; font-size: clamp(2.2rem, 5vw, 4.2rem); }
.tutor-final-cta .button { flex: 0 0 auto; }

.demo-page { min-height: 80vh; padding: 52px 0 80px; background:#f4f6f2; }.demo-shell{max-width:900px}.demo-heading{display:flex;flex-direction:column;gap:20px;justify-content:space-between;align-items:flex-start}.demo-heading .back-link{margin-bottom:32px}.demo-heading h1{margin-bottom:14px;font-size:clamp(2.8rem,6vw,4.8rem)}.demo-heading p{color:var(--color-muted)}.demo-status{padding:8px 12px;border:1px solid #d8ddd5;border-radius:999px;background:white;font-size:.8rem;font-weight:650}.demo-chat{margin-top:40px;overflow:hidden;border:1px solid #dfe3dc;border-radius:14px;background:white;box-shadow:0 22px 60px rgba(20,30,20,.08)}.demo-chat__messages{min-height:350px;padding:30px}.message{display:flex;gap:12px;margin-bottom:18px}.message>div{max-width:72%}.message small{display:block;margin-bottom:5px;color:var(--color-muted);font-size:.75rem}.message p{margin:0;border-radius:4px 14px 14px 14px;padding:13px 16px;background:#f0f3ee}.message--user{justify-content:flex-end}.message--user p{border-radius:14px 4px 14px 14px;background:var(--color-accent);color:white}.hint-button{margin-top:8px;border:0;background:transparent;color:var(--color-accent);font:inherit;font-size:.8rem;cursor:pointer}.demo-chat__form{display:flex;gap:10px;border-top:1px solid #e3e7e1;padding:16px}.demo-chat__form input{min-width:0;flex:1;border:1px solid #d9ded7;border-radius:7px;padding:13px;font:inherit}.demo-chat__form button{border:0;border-radius:7px;padding:0 20px;background:var(--color-ink);color:white;font-weight:700;cursor:pointer}.demo-note{text-align:center;margin-top:15px;color:var(--color-muted);font-size:.78rem}

.language-card__flag {
    margin-bottom: 28px;
    font-size: 3rem;
    line-height: 1;
}

.language-card__flag img {
    display: block;
    width: 72px;
    height: 48px;
    border: 1px solid rgba(17, 17, 17, 0.14);
    border-radius: 5px;
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(17, 17, 17, 0.1);
}

.language-card--featured .language-card__flag img {
    border-color: rgba(255, 255, 255, 0.28);
}

.language-flag {
    display: inline-flex;
    flex: 0 0 auto;
    overflow: hidden;
    border: 1px solid rgba(17, 17, 17, 0.2);
    border-radius: 5px;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.16);
}

.language-flag img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.language-flag--hero {
    width: 66px;
    height: 44px;
    border-color: rgba(255, 255, 255, 0.3);
}

.language-detail__label {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.language-detail__label .eyebrow {
    margin-bottom: 0;
}

.language-flag--card {
    width: 48px;
    height: 32px;
}

.tutor-card__identity {
    display: flex;
    align-items: center;
    gap: 20px;
}

.language-flag--badge {
    width: 39px;
    height: 26px;
    margin-right: 3px;
    border-color: rgba(255, 255, 255, 0.36);
}

.language-card__content {
    display: grid;
    gap: 12px;
}

.language-card__content h3,
.language-card__content p {
    margin-bottom: 0;
}

.language-card__content p {
    color: var(--color-muted);
}

.language-card__status {
    width: fit-content;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 4px 10px;
    color: var(--color-muted);
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.2;
}

.language-card__link {
    width: fit-content;
    margin-top: auto;
    padding-top: 28px;
    color: var(--color-text);
    font-weight: 650;
    transition: color 160ms ease;
}

.language-card__link:hover,
.language-card__link:focus-visible {
    color: var(--color-accent);
}

.language-card__link--disabled {
    color: var(--color-muted);
    cursor: default;
}

.language-card__link--disabled:hover,
.language-card__link--disabled:focus-visible {
    color: var(--color-muted);
}

@media (min-width: 821px) {
    :root {
        --space-section: 88px;
    }

    .header-inner {
        align-items: center;
        flex-direction: row;
        justify-content: space-between;
        gap: 24px;
        min-height: 72px;
        padding: 0;
    }

    .main-nav {
        justify-content: flex-end;
    }

    .hero {
        padding: 112px 0 96px;
    }

    .hero-home {
        grid-template-columns: minmax(0, 1.25fr) minmax(330px, 0.75fr);
    }

    h1 {
        font-size: 5.9rem;
        line-height: 0.98;
    }

    h2 {
        font-size: 3.5rem;
    }

    .hero p,
    .lead {
        font-size: 1.35rem;
    }

    .cards-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .card {
        min-height: 244px;
    }

    .closing {
        padding: 64px 0 96px;
    }

    .closing p {
        font-size: 3rem;
    }

    .language-hero {
        padding: 112px 0 56px;
    }

    .language-hero p {
        font-size: 1.35rem;
    }

    .language-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .language-card--featured {
        grid-column: span 2;
    }

    .language-card__flag {
        font-size: 3.8rem;
    }
    .language-detail__intro { grid-template-columns: 1.55fr .65fr; }
    .level-test-card { grid-template-columns: auto minmax(0,1fr) auto; padding: 38px 42px; }
    .test-landing__hero-grid { grid-template-columns: minmax(0,1fr) 330px; }
    .test-benefits { grid-template-columns: repeat(3,1fr); }
    .test-levels { grid-template-columns: repeat(3,1fr); }
    .test-prose-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 70px; }
    .tutor-logo--index { width: 320px; height: 320px; }
    .section-heading { flex-direction: row; align-items: end; justify-content: space-between; }
    .tutor-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 30px; }
    .tutor-hero__grid { grid-template-columns: 1.25fr .75fr; }
    .feature-grid { grid-template-columns: repeat(3,1fr); }
    .cta-section .container,.demo-heading { flex-direction: row; align-items:center; }
}

@media (max-width: 520px) {
    :root {
        --space-page: 20px;
    }

    .main-nav {
        gap: 4px 14px;
        font-size: 0.92rem;
    }

    .card {
        padding: 24px;
    }
}

/* Escala compacta para móviles y tablets verticales. */
@media (max-width: 820px) {
    :root {
        --space-page: 18px;
        --space-section: 42px;
    }

    body {
        line-height: 1.45;
    }

    .header-inner {
        gap: 4px;
        padding: 10px 0 8px;
    }

    .brand {
        line-height: 1;
    }

    .brand img {
        width: 138px;
    }

    .main-nav {
        width: 100%;
        flex-wrap: nowrap;
        gap: 10px;
        overflow-x: auto;
        padding-bottom: 1px;
        font-size: 0.78rem;
        line-height: 1.2;
        scrollbar-width: none;
    }

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

    .main-nav a {
        flex: 0 0 auto;
        padding: 4px 0;
        white-space: nowrap;
    }

    h1 {
        margin-bottom: 16px;
        font-size: clamp(2.45rem, 12vw, 3.5rem);
        line-height: 0.98;
    }

    h2 {
        margin-bottom: 12px;
        font-size: 1.85rem;
    }

    .eyebrow {
        margin-bottom: 10px;
        font-size: 0.68rem;
    }

    .hero,
    .language-hero {
        padding: 42px 0 36px;
    }

    .hero-home {
        gap: 34px;
    }

    .hero-home__wordmark {
        width: min(76vw, 310px);
        margin-bottom: 28px;
    }

    .hero-home__visual {
        width: min(100%, 420px);
        margin-inline: auto;
        border-radius: 24px;
    }

    .hero p,
    .language-hero p,
    .lead {
        font-size: 1rem;
        line-height: 1.45;
    }

    .section {
        padding: 42px 0;
    }

    .cards-section {
        padding-top: 24px;
    }

    .card {
        min-height: 170px;
        padding: 20px;
    }

    .card p {
        margin-bottom: 18px;
    }

    .language-grid,
    .cards-grid {
        gap: 14px;
    }

    .language-card {
        min-height: 215px;
        padding: 21px;
    }

    .language-card__flag {
        margin-bottom: 18px;
        font-size: 2.5rem;
    }

    .language-card__link {
        padding-top: 18px;
    }

    .language-detail__hero {
        padding: 28px 0 44px;
    }

    .back-link {
        margin-bottom: 24px;
        font-size: 0.82rem;
    }

    .language-detail__intro {
        gap: 18px;
    }

    .language-detail__brand {
        order: 3;
        justify-self: center;
        margin-top: 14px;
    }

    .tutor-logo--index {
        width: 168px;
        height: 168px;
    }

    .language-detail__aside {
        align-items: center;
    }

    .language-detail__aside > p {
        order: 1;
        font-size: 1rem;
    }

    .language-detail__label {
        gap: 11px;
        margin-bottom: 16px;
    }

    .language-flag--hero {
        width: 51px;
        height: 34px;
    }

    .language-detail__intro h1 {
        font-size: clamp(2.7rem, 13vw, 4rem);
    }

    .section-heading {
        gap: 6px;
        margin-bottom: 26px;
    }

    .tutor-grid {
        gap: 18px;
    }

    .tutor-card {
        min-height: 330px;
        box-shadow: 6px 6px 0 var(--color-lime);
    }

    .tutor-card:hover {
        box-shadow: 6px 9px 0 var(--color-lime);
    }

    .tutor-card__top {
        padding: 21px 21px 0;
    }

    .tutor-logo--card {
        width: 68px;
        height: 68px;
    }

    .tutor-card__level {
        font-size: 2.8rem;
    }

    .tutor-card__identity {
        gap: 15px;
    }

    .tutor-card__body {
        padding: 22px 21px 21px;
    }

    .tutor-card h3 {
        margin-bottom: 10px;
        font-size: 1.5rem;
    }

    .tutor-card__cta {
        padding: 15px 21px;
    }

    .tutor-hero {
        padding: 28px 0 46px;
    }

    .tutor-hero__grid {
        gap: 34px;
    }

    .tutor-hero__visual {
        padding-top: 58px;
    }

    .tutor-logo--hero {
        width: 116px;
        height: 116px;
    }

    .tutor-hero__copy h1 {
        margin: 18px 0;
        font-size: clamp(2.6rem, 12vw, 3.8rem);
    }

    .tutor-hero__copy > p {
        font-size: 1rem;
    }

    .hero-actions {
        gap: 16px;
        margin-top: 24px;
    }

    .microcopy {
        margin-top: 14px !important;
    }

    .conversation-preview {
        padding: 17px;
    }

    .conversation-preview__header {
        margin-bottom: 20px;
        padding-bottom: 14px;
    }

    .feature-grid article {
        padding: 24px 21px;
    }

    .feature-grid article > span {
        margin-bottom: 24px;
    }

    .cta-section {
        padding: 42px 0;
    }

    .tutor-final-cta h2 {
        font-size: 2rem;
    }

    .closing {
        padding: 36px 0 48px;
    }

    .closing p {
        font-size: 1.4rem;
    }

    .footer-inner {
        padding: 22px 0;
    }
}