:root {
    --ink: #142033;
    --muted: #637083;
    --line: #dbe4ef;
    --blue: #2563eb;
    --green: #0f9f6e;
    --soft: #f3f7fb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    font-family: Inter, Arial, sans-serif;
    background: #f6f9fc;
}

a { color: inherit; }

.landing-nav {
    position: fixed;
    z-index: 20;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: min(1120px, calc(100% - 32px));
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 12px 14px;
    border: 1px solid rgba(255,255,255,.32);
    border-radius: 8px;
    background: rgba(255,255,255,.88);
    backdrop-filter: blur(14px);
    box-shadow: 0 14px 40px rgba(15, 23, 42, .12);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    text-decoration: none;
}

.brand span {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--green));
}

.landing-nav nav {
    display: flex;
    align-items: center;
    gap: 18px;
    color: #334155;
    font-size: 14px;
    font-weight: 700;
}

.landing-nav nav a { text-decoration: none; }

.hero {
    position: relative;
    min-height: 92vh;
    display: grid;
    align-items: end;
    padding: 118px 24px 70px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(10, 18, 32, .94), rgba(10, 18, 32, .76), rgba(10, 18, 32, .24)),
        url("https://images.unsplash.com/photo-1503387762-592deb58ef4e?auto=format&fit=crop&w=1800&q=80") center/cover;
}

.hero-content {
    position: relative;
    width: min(1120px, 100%);
    margin: 0 auto;
    color: #fff;
}

.eyebrow,
.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #bfe3ff;
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.section-kicker { color: var(--blue); }

.hero h1 {
    max-width: 850px;
    margin: 18px 0 18px;
    font-size: clamp(42px, 7vw, 78px);
    line-height: .95;
    letter-spacing: 0;
}

.hero p {
    max-width: 690px;
    margin: 0;
    color: #d8e4f2;
    font-size: 19px;
    line-height: 1.7;
}

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

.btn-primary-landing,
.btn-secondary-landing,
.btn-plan {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 14px 22px;
    border-radius: 8px;
    font-weight: 900;
    text-decoration: none;
}

.btn-primary-landing,
.btn-plan {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), #0d9488);
    box-shadow: 0 14px 34px rgba(37, 99, 235, .3);
}

.btn-secondary-landing {
    color: #fff;
    border: 1px solid rgba(255,255,255,.28);
    background: rgba(255,255,255,.12);
}

.hero-proof {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 34px;
}

.hero-proof span {
    padding: 10px 12px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 8px;
    background: rgba(255,255,255,.1);
    color: #d9e7f6;
}

.section {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 82px 0;
}

.section h2 {
    margin: 10px 0 0;
    max-width: 740px;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.05;
    letter-spacing: 0;
}

.section-head {
    display: grid;
    gap: 10px;
    margin-bottom: 28px;
}

.section-head p {
    max-width: 680px;
    margin: 0;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.7;
}

.benefits {
    display: grid;
    grid-template-columns: .85fr 1.15fr;
    gap: 28px;
    align-items: start;
}

.benefit-grid,
.module-grid,
.plans-grid,
.faq-grid {
    display: grid;
    gap: 16px;
}

.benefit-grid { grid-template-columns: repeat(3, 1fr); }
.module-grid { grid-template-columns: repeat(4, 1fr); }
.plans-grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.faq-grid { grid-template-columns: repeat(3, 1fr); }

.benefit-grid article,
.module-card,
.plan-card,
.faq-grid article {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 18px 50px rgba(15, 23, 42, .08);
}

.benefit-grid article {
    padding: 22px;
}

.benefit-grid i {
    color: var(--blue);
    font-size: 24px;
}

.benefit-grid h3,
.module-card h3,
.faq-grid h3 {
    margin: 16px 0 8px;
    font-size: 18px;
}

.benefit-grid p,
.module-card p,
.faq-grid p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
}

.module-card { padding: 20px; }

.plan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 22px;
}

.plan-card.is-recommended {
    border-color: #8fc8ff;
    box-shadow: 0 22px 60px rgba(37, 99, 235, .16);
}

.plan-card.is-premium {
    border-color: #111827;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 0 24px 70px rgba(15, 23, 42, .14);
}

.recommended {
    align-self: flex-start;
    padding: 6px 10px;
    border-radius: 8px;
    color: #075985;
    background: #e0f2fe;
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}

.plan-card h3 { margin: 0; font-size: 22px; }
.price { font-size: 34px; font-weight: 900; }
.price small {
    color: var(--muted);
    font-size: 15px;
    font-weight: 900;
}
.plan-card p { margin: -8px 0 0; color: var(--muted); }
.plan-card ul {
    display: grid;
    gap: 10px;
    margin: 0 0 8px;
    padding: 0;
    list-style: none;
    color: #334155;
}

.plan-card li::before {
    content: "✓";
    margin-right: 8px;
    color: var(--green);
    font-weight: 900;
}

.btn-plan { margin-top: auto; }

.cta-band {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 34px;
    border: 1px solid #b7d7ff;
    border-radius: 8px;
    background: #0f1b2d;
    color: #fff;
}

.cta-band h2 { margin: 0; font-size: clamp(26px, 4vw, 42px); }
.cta-band p { margin: 10px 0 0; color: #cbd7e5; }

.landing-footer {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 40px;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    color: var(--muted);
    border-top: 1px solid var(--line);
}

.landing-footer strong { color: var(--ink); }

@media (max-width: 980px) {
    .benefits,
    .benefit-grid,
    .module-grid,
    .plans-grid,
    .faq-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 700px) {
    .landing-nav {
        position: absolute;
        top: 10px;
    }

    .landing-nav nav {
        display: none;
    }

    .hero { min-height: 88vh; }
    .benefits,
    .benefit-grid,
    .module-grid,
    .plans-grid,
    .faq-grid,
    .cta-band {
        grid-template-columns: 1fr;
    }

    .cta-band,
    .landing-footer {
        display: grid;
    }
}

.checkout-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 28px;
    background:
        linear-gradient(120deg, rgba(20,32,51,.92), rgba(20,32,51,.72)),
        url("https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&w=1600&q=80") center/cover;
}

.checkout-shell {
    width: min(1080px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(290px, .75fr);
    gap: 18px;
}

.checkout-card,
.checkout-summary {
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 8px;
    background: rgba(255,255,255,.95);
    box-shadow: 0 24px 70px rgba(0,0,0,.22);
}

.checkout-card { padding: 30px; }
.checkout-summary { padding: 28px; align-self: start; }

.back-link {
    display: inline-flex;
    margin-bottom: 20px;
    color: var(--blue);
    font-weight: 800;
    text-decoration: none;
}

.checkout-card h1 {
    margin: 0 0 10px;
    font-size: clamp(30px, 5vw, 46px);
    line-height: 1;
}

.checkout-card p,
.checkout-summary p,
.checkout-summary li,
.form-row small {
    color: var(--muted);
    line-height: 1.6;
}

.checkout-form {
    display: grid;
    gap: 14px;
    margin-top: 22px;
}

.form-grid-two {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.form-row {
    display: grid;
    gap: 7px;
}

.form-row label {
    font-weight: 900;
    font-size: 13px;
}

.form-row input {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 8px;
    font: inherit;
}

.checkout-error {
    margin-top: 16px;
    padding: 12px 14px;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: #991b1b;
    background: #fff1f2;
    font-weight: 800;
}

.checkout-success {
    margin-top: 16px;
    padding: 12px 14px;
    border: 1px solid #a7f3d0;
    border-radius: 8px;
    color: #065f46;
    background: #ecfdf5;
    font-weight: 800;
    display: grid;
    gap: 8px;
}

.checkout-success a {
    color: #047857;
    font-weight: 900;
}

.checkout-summary span {
    color: var(--blue);
    font-weight: 900;
    text-transform: uppercase;
    font-size: 12px;
}

.checkout-summary h2 {
    margin: 10px 0;
    font-size: 28px;
}

.checkout-summary strong {
    display: block;
    font-size: 38px;
}

.checkout-summary ul {
    display: grid;
    gap: 10px;
    padding: 0;
    margin: 20px 0 0;
    list-style: none;
}

.checkout-summary li::before {
    content: "✓";
    margin-right: 8px;
    color: var(--green);
    font-weight: 900;
}

.status-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: var(--soft);
}

.status-card {
    width: min(620px, 100%);
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 22px 60px rgba(15, 23, 42, .1);
    text-align: center;
}

.status-card h1 {
    margin: 0 0 12px;
    font-size: clamp(30px, 5vw, 44px);
}

.status-card p {
    color: var(--muted);
    line-height: 1.7;
}

.status-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

@media (max-width: 800px) {
    .checkout-shell,
    .form-grid-two {
        grid-template-columns: 1fr;
    }
}