:root {
    --landing-navy: #08175c;
    --landing-blue: #1769aa;
    --landing-red: #d84b32;
    --landing-gold: #f0aa2c;
    --landing-ink: #172033;
    --landing-muted: #5e6878;
    --landing-surface: #f5f7fb;
    --landing-white: #ffffff;
}

.landing-page,
.landing-section,
.landing-cta {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--landing-ink);
}

.landing-hero {
    min-height: 590px;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(380px, .92fr);
    align-items: start;
    gap: 64px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 52px 28px 64px;
}

.hero-eyebrow,
.section-kicker {
    display: block;
    color: var(--landing-red);
    font-size: .78rem;
    font-weight: 800;
    letter-spacing: .11em;
    line-height: 1.5;
    text-transform: uppercase;
}

.landing-hero h1 {
    max-width: 720px;
    margin: 14px 0 20px;
    color: var(--landing-navy);
    font-size: clamp(2.4rem, 5vw, 4.5rem);
    line-height: 1.04;
    letter-spacing: -.04em;
}

.hero-summary {
    max-width: 650px;
    color: var(--landing-muted);
    font-size: 1.15rem;
    line-height: 1.72;
}

.hero-actions,
.proof-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.landing-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 22px;
    border: 2px solid transparent;
    border-radius: 8px;
    font-size: .98rem;
    font-weight: 800;
    line-height: 1.2;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.landing-button:hover,
.landing-button:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(8, 23, 92, .16);
}

.landing-button-primary { background: var(--landing-red); color: #fff; }
.landing-button-primary:hover { background: #ba3923; color: #fff; }
.landing-button-secondary { border-color: var(--landing-navy); color: var(--landing-navy); background: #fff; }
.landing-button-secondary:hover { background: var(--landing-navy); color: #fff; }
.landing-button-light { background: #fff; color: var(--landing-navy); }
.landing-button-outline-light { border-color: rgba(255,255,255,.7); color: #fff; }

.placement-note {
    margin-top: 16px;
    color: var(--landing-muted);
    font-size: .9rem;
}

.hero-visual { position: relative; }
.hero-video {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 22px;
    background: #000;
    box-shadow: 0 24px 60px rgba(8, 23, 92, .2);
}

.hero-video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}
.hero-program-card {
    position: relative;
    width: 100%;
    margin-top: 16px;
    padding: 22px;
    border-left: 5px solid var(--landing-gold);
    border-radius: 10px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(8, 23, 92, .18);
}
.hero-card-label { display: block; color: var(--landing-red); font-size: .74rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.hero-program-card strong { display: block; margin: 7px 0 10px; color: var(--landing-navy); font-size: 1.08rem; line-height: 1.35; }
.hero-program-card a, .program-card a, .text-link { color: var(--landing-blue); font-weight: 800; text-decoration: none; }
.hero-program-card a:hover, .program-card a:hover, .text-link:hover { text-decoration: underline; }

.trust-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    max-width: 1200px;
    margin: 0 auto 56px;
    border-radius: 14px;
    background: var(--landing-navy);
    box-shadow: 0 14px 34px rgba(8,23,92,.17);
}

.trust-strip div { padding: 22px 24px; border-right: 1px solid rgba(255,255,255,.14); }
.trust-strip div:last-child { border-right: 0; }
.trust-strip strong, .trust-strip span { display: block; }
.trust-strip strong { color: #fff; font-size: 1.2rem; }
.trust-strip span { margin-top: 5px; color: #cbd5f4; font-size: .84rem; }

.public-lesson-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto 80px;
    padding: 28px 34px;
    border-radius: 14px;
    background: linear-gradient(120deg, #1769aa, #08175c);
    color: #fff;
}
.public-lesson-banner .section-kicker { color: #ffd37a; }
.public-lesson-banner h2 { margin: 5px 0; font-size: 1.8rem; }
.public-lesson-banner p { color: #dbe6ff; }

.landing-section { padding: 82px max(24px, calc((100% - 1200px) / 2)); }
.programs-section { background: var(--landing-surface); }
.section-heading { max-width: 720px; margin: 0 auto 42px; text-align: center; }
.section-heading h2, .why-intro h2, .landing-cta h2 { margin: 8px 0 14px; color: var(--landing-navy); font-size: clamp(2rem, 3.4vw, 3rem); line-height: 1.12; }
.section-heading p, .why-intro > p, .landing-cta p { color: var(--landing-muted); font-size: 1.05rem; line-height: 1.65; }

.program-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.program-card {
    min-height: 310px;
    display: flex;
    flex-direction: column;
    padding: 28px;
    border-top: 5px solid var(--landing-blue);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(28, 43, 75, .08);
}
.program-competition { border-color: var(--landing-red); }
.program-test { border-color: var(--landing-gold); }
.program-english { border-color: #579b78; }
.program-number { color: #9ca6b6; font-size: .8rem; font-weight: 800; letter-spacing: .08em; }
.program-card h3 { margin: 28px 0 12px; color: var(--landing-navy); font-size: 1.35rem; line-height: 1.2; }
.program-card p { margin-bottom: 24px; color: var(--landing-muted); line-height: 1.6; }
.program-card a { margin-top: auto; }

.why-section { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; }
.why-list { display: grid; gap: 14px; }
.why-list article { display: flex; gap: 18px; padding: 22px; border: 1px solid #e1e6ef; border-radius: 12px; background: #fff; }
.why-list article > span { flex: 0 0 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: #eaf0ff; color: var(--landing-navy); font-weight: 800; }
.why-list h3 { margin: 0 0 5px; color: var(--landing-navy); font-size: 1.08rem; }
.why-list p { color: var(--landing-muted); line-height: 1.5; }
.why-intro .text-link { display: inline-block; margin-top: 22px; }

.proof-section { background: var(--landing-navy); color: #fff; }
.section-heading-light h2 { color: #fff; }
.section-heading-light .section-kicker { color: #ffd37a; }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.proof-grid article { padding: 30px; border: 1px solid rgba(255,255,255,.14); border-radius: 12px; background: rgba(255,255,255,.06); }
.proof-grid strong { display: block; color: #ffd37a; font-size: 2.25rem; }
.proof-grid h3 { margin: 14px 0 8px; font-size: 1.25rem; }
.proof-grid p { color: #cbd5f4; line-height: 1.55; }
.proof-actions { justify-content: center; }

.landing-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
    max-width: 1200px;
    margin: 72px auto;
    padding: 48px;
    border: 1px solid #dce3ef;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 16px 40px rgba(28,43,75,.08);
}
.landing-cta > div { max-width: 720px; }

@media (max-width: 1050px) {
    .landing-hero { grid-template-columns: 1fr 420px; gap: 36px; }
    .program-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .landing-hero { min-height: 0; grid-template-columns: 1fr; padding: 48px 20px; }
    .landing-hero h1 { font-size: clamp(2.25rem, 11vw, 3.3rem); }
    .hero-summary { font-size: 1.02rem; }
    .trust-strip { grid-template-columns: repeat(2, 1fr); margin: 0 20px 40px; }
    .trust-strip div:nth-child(2) { border-right: 0; }
    .trust-strip div:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.14); }
    .public-lesson-banner { align-items: flex-start; flex-direction: column; margin: 0 20px 50px; }
    .landing-section { padding: 60px 20px; }
    .why-section { grid-template-columns: 1fr; gap: 34px; }
    .proof-grid { grid-template-columns: 1fr; }
    .landing-cta { align-items: flex-start; flex-direction: column; margin: 50px 20px; padding: 32px 24px; }
}

@media (max-width: 520px) {
    .hero-actions, .hero-actions .landing-button, .landing-cta .landing-button { width: 100%; }
    .program-grid { grid-template-columns: 1fr; }
    .program-card { min-height: 0; }
    .trust-strip { grid-template-columns: 1fr; }
    .trust-strip div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.14); }
    .trust-strip div:last-child { border-bottom: 0; }
    .hero-program-card { width: 100%; margin-top: 14px; }
}