:root {
    --snow: #ffffff;
    --mist: #f2f6f3;
    --mist-2: #eaf0ec;
    --stone: #dfe7e2;

    --forest: #123f27;
    --forest-2: #1f5a3a;
    --sage: #6f8f7a;
    --sage-soft: #edf5ef;

    --text: #203329;
    --muted: #6f8176;
    --faint: #9aaba1;

    --green: #2f8d5c;
    --green-soft: #e8f5ee;

    --sky: #4f8ea8;
    --sky-soft: #e8f3f7;

    --amber: #b7791f;
    --amber-soft: #fff4dc;

    --coral: #b84a3a;
    --coral-soft: #fdecea;

    --border: #e3ebe6;
    --shadow: 0 8px 24px rgba(25, 50, 35, .06);
    --shadow-soft: 0 3px 12px rgba(25, 50, 35, .045);

    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 72px;

    --max-width: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--snow);
    color: var(--text);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

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

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

.wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 24px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 800;
    font-size: 15px;
    cursor: pointer;
    transition: background .15s ease, transform .15s ease;
}

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

.btn-primary:hover {
    background: var(--forest-2);
}

.btn-soft {
    background: var(--sage-soft);
    color: var(--forest);
    border-color: var(--border);
}

.btn-soft:hover {
    background: var(--mist-2);
}

.btn-ghost {
    background: transparent;
    color: var(--muted);
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(47, 141, 92, .35);
    outline-offset: 3px;
    border-radius: 999px;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, .9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 800;
    font-size: 20px;
    color: var(--forest);
}

.brand-mark {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--green), var(--forest));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 15px;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.site-nav a.nav-link {
    color: var(--muted);
    font-weight: 600;
    font-size: 15px;
}

.site-nav a.nav-link:hover {
    color: var(--forest);
}

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

.hero {
    background:
        radial-gradient(1200px 500px at 15% -10%, var(--sage-soft), transparent),
        radial-gradient(900px 500px at 100% 0%, var(--sky-soft), transparent);
    padding: var(--space-8) 0 var(--space-7);
}

.hero .wrap {
    text-align: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--sage-soft);
    color: var(--forest);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: .02em;
    text-transform: uppercase;
    margin-bottom: var(--space-5);
}

.hero h1 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1.08;
    margin: 0 0 var(--space-4);
    color: var(--forest);
    font-weight: 800;
    letter-spacing: -.01em;
}

.hero p.lede {
    font-size: clamp(16px, 2vw, 19px);
    color: var(--muted);
    max-width: 640px;
    margin: 0 auto var(--space-6);
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    margin-bottom: var(--space-3);
}

.hero-note {
    font-size: 13px;
    color: var(--faint);
}

/* -------------------- Sections -------------------- */

section {
    padding: var(--space-8) 0;
}

.section-head {
    text-align: center;
    max-width: 620px;
    margin: 0 auto var(--space-7);
}

.section-head .k {
    color: var(--sage);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: var(--space-2);
}

.section-head h2 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(26px, 3.5vw, 36px);
    color: var(--forest);
    margin: 0 0 var(--space-3);
    font-weight: 800;
    letter-spacing: -.01em;
}

.section-head p {
    color: var(--muted);
    font-size: 16px;
    margin: 0;
}

/* -------------------- Feature grid -------------------- */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-5);
}

.feature-card {
    background: var(--snow);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-soft);
}

.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--sage-soft);
    color: var(--forest);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: var(--space-4);
}

.feature-card h3 {
    font-size: 18px;
    color: var(--forest);
    margin: 0 0 var(--space-2);
    font-weight: 800;
}

.feature-card p {
    color: var(--muted);
    font-size: 15px;
    margin: 0;
}

/* -------------------- How it works -------------------- */

.how-it-works {
    background: var(--mist);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-6);
    counter-reset: step;
}

.step {
    position: relative;
    padding-left: var(--space-6);
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: var(--forest);
    color: #fff;
    font-weight: 800;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step h3 {
    font-size: 16px;
    color: var(--forest);
    margin: 0 0 var(--space-2);
    font-weight: 800;
}

.step p {
    color: var(--muted);
    font-size: 15px;
    margin: 0;
}

/* -------------------- The Problem -------------------- */

.problem-body {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.problem-body p {
    color: var(--muted);
    font-size: 17px;
    margin: 0 0 var(--space-4);
}

.problem-body p:last-child {
    margin-bottom: 0;
}

/* -------------------- Course Memory spotlight -------------------- */

.memory-spotlight {
    background: var(--mist);
}

.memory-example {
    max-width: 640px;
    margin: var(--space-7) auto 0;
    background: linear-gradient(135deg, var(--forest), var(--forest-2));
    color: #fff;
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    box-shadow: var(--shadow);
}

.memory-example-badge {
    display: inline-flex;
    align-items: center;
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: rgba(255, 255, 255, .78);
}

.memory-example-date {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -.01em;
    margin: 14px 0 10px;
}

.memory-example-summary {
    font-size: 17px;
    color: rgba(255, 255, 255, .92);
    max-width: 480px;
    margin: 0 auto var(--space-4);
}

.memory-example-detail {
    color: rgba(255, 255, 255, .68);
    font-size: 13px;
    max-width: 460px;
    margin: 0 auto;
    padding-top: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, .16);
}

/* -------------------- CTA -------------------- */

.cta {
    background: linear-gradient(135deg, var(--forest), var(--forest-2));
    border-radius: var(--radius-xl);
    margin: 0 auto;
    max-width: var(--max-width);
    padding: var(--space-7) var(--space-6);
    text-align: center;
    color: #fff;
}

.cta h2 {
    font-size: clamp(24px, 3vw, 32px);
    margin: 0 0 var(--space-3);
    font-weight: 800;
}

.cta p {
    color: rgba(255, 255, 255, .8);
    max-width: 520px;
    margin: 0 auto var(--space-5);
}

.cta .btn-primary {
    background: #fff;
    color: var(--forest);
}

.cta .btn-primary:hover {
    background: var(--mist-2);
}

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

footer.site-footer {
    border-top: 1px solid var(--border);
    padding: var(--space-6) 0;
}

.site-footer .wrap {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
    justify-content: space-between;
}

.site-footer .brand {
    font-size: 16px;
}

.footer-links {
    display: flex;
    gap: var(--space-5);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
}

.footer-links a:hover {
    color: var(--forest);
}

.footer-meta {
    color: var(--faint);
    font-size: 13px;
}

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

@media (max-width: 720px) {
    .site-nav .nav-link {
        display: none;
    }

    section {
        padding: var(--space-7) 0;
    }
}

/* -------------------- Product showcase -------------------- */

.showcase-hero {
    background: linear-gradient(180deg, #0b2417, #123f27 60%, #1f5a3a);
    color: #fff;
    padding: var(--space-8) 0 var(--space-7);
    text-align: center;
}

.showcase-hero .eyebrow {
    background: rgba(255, 255, 255, .12);
    color: #dff5e8;
}

.showcase-hero h1 {
    font-size: clamp(30px, 4.5vw, 50px);
    line-height: 1.1;
    margin: 0 0 var(--space-4);
    font-weight: 800;
    letter-spacing: -.01em;
}

.showcase-hero p.lede {
    font-size: clamp(16px, 2vw, 19px);
    color: rgba(255, 255, 255, .75);
    max-width: 620px;
    margin: 0 auto var(--space-6);
}

.showcase-hero .hero-actions .btn-primary {
    background: #fff;
    color: var(--forest);
}

.showcase-hero .hero-actions .btn-primary:hover {
    background: var(--mist-2);
}

.showcase-hero .hero-actions .btn-soft {
    background: rgba(255, 255, 255, .12);
    color: #fff;
    border-color: rgba(255, 255, 255, .25);
}

.frame-shot {
    margin-top: var(--space-7);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Browser-chrome frame around every product screenshot */
.frame {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, .25), 0 4px 12px rgba(0, 0, 0, .1);
    border: 1px solid rgba(255, 255, 255, .08);
}

.frame-bar {
    background: #eef2ef;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.frame-bar span {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: #d7dfda;
}

.frame img {
    width: 100%;
    display: block;
}

.showcase-rows {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.showcase-row {
    display: flex;
    align-items: center;
    gap: var(--space-7);
}

.showcase-row.reverse {
    flex-direction: row-reverse;
}

.showcase-row .showcase-copy,
.showcase-row .showcase-shot {
    flex: 1 1 0;
    min-width: 0;
}

.showcase-copy .k {
    color: var(--sage);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: var(--space-2);
}

.showcase-copy h2 {
    font-size: clamp(22px, 3vw, 30px);
    color: var(--forest);
    margin: 0 0 var(--space-3);
    font-weight: 800;
    letter-spacing: -.01em;
}

.showcase-copy p {
    color: var(--muted);
    font-size: 16px;
    margin: 0 0 var(--space-4);
}

.showcase-copy ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.showcase-copy li {
    color: var(--text);
    font-size: 15px;
    padding-left: 26px;
    position: relative;
}

.showcase-copy li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--green);
    font-weight: 800;
}

.showcase-shot .frame {
    box-shadow: var(--shadow);
}

@media (max-width: 860px) {
    .showcase-row,
    .showcase-row.reverse {
        flex-direction: column;
    }
}