:root {
    color-scheme: light;
    --bg: #f7f9fb;
    --surface: #ffffff;
    --surface-strong: #eef7f5;
    --ink: #162128;
    --muted: #5b6872;
    --line: #d9e2e7;
    --primary: #0f766e;
    --primary-dark: #115e59;
    --blue: #2563eb;
    --amber: #b45309;
    --green: #15803d;
    --red: #b91c1c;
    --radius: 8px;
    --shadow: 0 16px 45px rgba(22, 33, 40, 0.10);
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

a {
    color: inherit;
}

button,
input,
select,
textarea {
    font: inherit;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -4rem;
    z-index: 20;
    background: var(--ink);
    color: white;
    padding: .75rem 1rem;
    border-radius: var(--radius);
}

.skip-link:focus {
    top: 1rem;
}

:focus-visible {
    outline: 3px solid rgba(37, 99, 235, .65);
    outline-offset: 3px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(247, 249, 251, .92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}

.nav {
    max-width: var(--container);
    margin: 0 auto;
    min-height: 72px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand,
.nav-links,
.footer-links,
.cluster {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand {
    text-decoration: none;
    font-weight: 800;
    margin-right: auto;
}

.brand-mark {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    background: var(--primary);
    color: white;
}

.nav-links a,
.footer-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: .95rem;
    font-weight: 650;
}

.nav-links a:hover,
.nav-links a.is-active,
.footer-links a:hover {
    color: var(--ink);
}

.nav-cta,
.button {
    border: 0;
    border-radius: var(--radius);
    background: var(--primary);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 16px;
    text-decoration: none;
    font-weight: 750;
    cursor: pointer;
}

.button.secondary,
.nav-cta.secondary {
    background: var(--ink);
}

.button.light {
    background: white;
    color: var(--primary-dark);
    border: 1px solid var(--line);
}

.hero,
.band,
.section {
    padding: 64px 20px;
}

.hero {
    background:
        linear-gradient(115deg, rgba(15, 118, 110, .12), rgba(37, 99, 235, .08) 52%, rgba(180, 83, 9, .08)),
        var(--bg);
    padding-block: 34px;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
}

.hero-grid,
.two-col,
.dashboard-grid,
.pricing-grid,
.cards-grid {
    display: grid;
    gap: 24px;
}

.hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(420px, .98fr);
    align-items: center;
}

.two-col {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: start;
}

.dashboard-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    align-items: start;
}

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

.eyebrow {
    color: var(--primary-dark);
    font-weight: 800;
    text-transform: uppercase;
    font-size: .78rem;
}

h1,
h2,
h3 {
    line-height: 1.08;
    margin: 0;
}

h1 {
    font-size: clamp(2.25rem, 4.7vw, 3.65rem);
    max-width: 900px;
}

h2 {
    font-size: clamp(1.8rem, 3.4vw, 2.8rem);
}

h3 {
    font-size: 1.15rem;
}

p {
    margin: 0;
}

.lead {
    margin-top: 18px;
    color: var(--muted);
    font-size: 1.14rem;
    max-width: 720px;
}

.hero-actions,
.section-actions {
    margin-top: 26px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.product-visual {
    background: #0d1720;
    color: white;
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
}

.visual-toolbar,
.visual-row,
.metric-row,
.table-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.visual-toolbar {
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: #34d399;
    display: inline-block;
}

.visual-panel {
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: var(--radius);
    margin-top: 12px;
    padding: 12px;
}

.visual-panel strong {
    display: block;
    margin-bottom: 10px;
}

.mini-bars {
    display: grid;
    gap: 8px;
}

.mini-bar,
.meter {
    background: rgba(15, 33, 40, .10);
    border-radius: 999px;
    overflow: hidden;
    height: 10px;
}

.mini-bar span,
.meter span {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: var(--primary);
}

.mini-bar.blue span,
.meter.blue span {
    background: var(--blue);
}

.mini-bar.amber span,
.meter.amber span {
    background: #d97706;
}

.surface,
.card,
.sidebar,
.table-wrap,
.exercise-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.surface,
.card,
.sidebar,
.exercise-panel {
    padding: 22px;
}

.band {
    background: white;
    border-block: 1px solid var(--line);
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 24px;
    margin-bottom: 28px;
}

.section-head p {
    color: var(--muted);
    max-width: 700px;
    margin-top: 10px;
}

.card {
    min-height: 100%;
}

.card p,
.muted {
    color: var(--muted);
}

.card h3 + p {
    margin-top: 10px;
}

.kpi {
    display: grid;
    gap: 4px;
}

.kpi strong {
    font-size: 2rem;
}

.badge,
.status {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    border-radius: 999px;
    padding: 0 10px;
    background: var(--surface-strong);
    color: var(--primary-dark);
    font-size: .82rem;
    font-weight: 750;
}

.status.good {
    color: var(--green);
    background: #ecfdf5;
}

.status.warn {
    color: var(--amber);
    background: #fff7ed;
}

.status.risk {
    color: var(--red);
    background: #fef2f2;
}

.sidebar {
    position: sticky;
    top: 92px;
}

.sidebar nav {
    display: grid;
    gap: 8px;
}

.sidebar a {
    text-decoration: none;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--muted);
    font-weight: 700;
}

.sidebar a:hover {
    background: var(--surface-strong);
    color: var(--ink);
}

.stack {
    display: grid;
    gap: 18px;
}

.tight-stack {
    display: grid;
    gap: 10px;
}

.metric-row,
.table-row {
    padding: 14px 0;
    border-top: 1px solid var(--line);
}

.metric-row:first-child,
.table-row:first-child {
    border-top: 0;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

th,
td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    font-size: .82rem;
    color: var(--muted);
    text-transform: uppercase;
}

.meter {
    min-width: 120px;
}

.answer-form {
    display: grid;
    gap: 14px;
}

.answer-form label,
.form-grid label {
    font-weight: 800;
}

.answer-form input,
.form-grid input,
.form-grid select,
.form-grid textarea,
.inline-form input {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0 14px;
    background: white;
    color: var(--ink);
}

.form-grid textarea {
    padding-block: 12px;
    resize: vertical;
}

.auth-layout {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(360px, .7fr);
    align-items: start;
    gap: 28px;
}

.form-grid,
.form-two,
.inline-form {
    display: grid;
    gap: 14px;
}

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

.form-grid label span {
    display: block;
    margin-bottom: 6px;
}

.inline-form {
    grid-template-columns: minmax(170px, 1fr) 92px auto;
    align-items: center;
}

.legal-page {
    max-width: 880px;
}

.legal-copy {
    font-size: 1.04rem;
}

.flash-success {
    background: #ecfdf5;
    color: var(--green);
}

.flash-error {
    background: #fef2f2;
    color: var(--red);
}

.flash-warning {
    background: #fff7ed;
    color: var(--amber);
}

.exercise-prompt {
    font-size: 1.7rem;
    font-weight: 850;
    line-height: 1.2;
    padding: 22px;
    background: var(--surface-strong);
    border-radius: var(--radius);
}

.flash {
    max-width: var(--container);
    margin: 18px auto 0;
    padding: 12px 18px;
    border-radius: var(--radius);
    background: #fff7ed;
    color: var(--amber);
}

.site-footer {
    max-width: var(--container);
    margin: 0 auto;
    padding: 36px 20px;
    display: flex;
    justify-content: space-between;
    gap: 24px;
    color: var(--muted);
}

.site-footer strong {
    color: var(--ink);
    margin-right: 8px;
}

@media (max-width: 940px) {
    .hero-grid,
    .two-col,
    .dashboard-grid,
    .pricing-grid,
    .cards-grid,
    .auth-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .nav {
        flex-wrap: wrap;
        padding-block: 14px;
    }

    .nav-links {
        order: 3;
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .site-footer,
    .section-head {
        align-items: start;
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .hero,
    .band,
    .section {
        padding: 48px 16px;
    }

    .hero {
        padding-block: 38px;
    }

    .product-visual,
    .surface,
    .card,
    .sidebar,
    .exercise-panel {
        padding: 16px;
    }

    .nav-cta {
        width: 100%;
    }

    .nav-links {
        flex-wrap: wrap;
        overflow: visible;
        gap: 10px 14px;
    }

    .nav-links a {
        font-size: .9rem;
    }

    .form-two,
    .inline-form {
        grid-template-columns: 1fr;
    }
}