:root {
    color-scheme: light;
    --ink: #17211d;
    --muted: #5d6b64;
    --line: #dbe5df;
    --paper: #fbfdfb;
    --panel: #ffffff;
    --teal: #0f8b78;
    --teal-dark: #0a5f54;
    --coral: #d95c4b;
    --amber: #b7791f;
    --mint: #e5f7ef;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
}

a {
    color: var(--teal-dark);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.shell {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav {
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.9);
    position: sticky;
    top: 0;
    z-index: 10;
}

.nav-inner {
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    font-weight: 800;
    letter-spacing: 0;
}

.nav-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 14px;
}

.hero {
    padding: 72px 0 56px;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
    gap: 42px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--line);
    background: var(--mint);
    color: var(--teal-dark);
    border-radius: 999px;
    padding: 5px 11px;
    font-size: 13px;
    font-weight: 700;
}

h1 {
    font-size: clamp(38px, 6vw, 68px);
    line-height: 1.02;
    letter-spacing: 0;
    margin: 18px 0 18px;
}

.lead {
    font-size: 19px;
    color: var(--muted);
    max-width: 680px;
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    border: 1px solid var(--teal-dark);
    padding: 9px 15px;
    font-weight: 750;
}

.button.primary {
    background: var(--teal-dark);
    color: white;
}

.button.secondary {
    background: white;
    color: var(--teal-dark);
}

.mock {
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(23, 33, 29, 0.12);
    overflow: hidden;
}

.mock-top {
    padding: 12px 14px;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--muted);
    font-size: 13px;
}

.mock-body {
    padding: 18px;
    display: grid;
    gap: 14px;
}

.metric-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.metric {
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: 12px;
    background: #fcfffd;
}

.metric strong {
    display: block;
    font-size: 22px;
}

.metric span {
    color: var(--muted);
    font-size: 12px;
}

.chat {
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: 14px;
    display: grid;
    gap: 10px;
}

.bubble {
    border-radius: 7px;
    padding: 10px 12px;
    font-size: 14px;
}

.bubble.user {
    background: #f3f6f4;
}

.bubble.ai {
    background: var(--mint);
    border-left: 4px solid var(--teal);
}

.source {
    color: var(--amber);
    font-size: 12px;
    font-weight: 700;
}

.section {
    padding: 48px 0;
    border-top: 1px solid var(--line);
}

.section h2 {
    font-size: 30px;
    margin: 0 0 14px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
}

.card h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

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

.flow {
    display: grid;
    gap: 10px;
    margin-top: 24px;
}

.step {
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 12px;
    align-items: start;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 14px;
}

.step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--teal-dark);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 13px;
}

.privacy {
    background: #fff8f2;
    border-color: #f0c9a6;
}

.footer {
    padding: 36px 0;
    color: var(--muted);
    font-size: 14px;
}

@media (max-width: 820px) {
    .hero-grid,
    .grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 44px;
    }

    .nav-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 14px 0;
    }
}

@media (max-width: 520px) {
    .shell {
        padding: 0 16px;
    }

    .metric-row {
        grid-template-columns: 1fr;
    }
}