:root {
    --bg: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --soft: #f9fafb;
    --border: #e5e7eb;
    --accent: #2563eb;
    --accent-dark: #1d4ed8;
    --card: #ffffff;
    --radius: 18px;
    --shadow: 0 20px 50px rgba(17, 24, 39, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

a {
    color: inherit;
}

.container {
    width: min(1100px, calc(100% - 32px));
    margin: 0 auto;
}

.narrow {
    max-width: 760px;
}

.section {
    padding: 88px 0;
}

.site-header {
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.nav {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 800;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--accent);
}

.hero {
    padding-top: 96px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 48px;
    align-items: center;
}

.eyebrow {
    margin: 0 0 14px;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 780px;
    font-size: clamp(2.6rem, 7vw, 5rem);
    line-height: 0.98;
    letter-spacing: -0.065em;
    margin-bottom: 28px;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.1rem);
    line-height: 1.05;
    letter-spacing: -0.045em;
    margin-bottom: 20px;
}

h3 {
    font-size: 1.15rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}

.hero-copy {
    max-width: 680px;
    color: var(--muted);
    font-size: 1.25rem;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    background: var(--accent);
    color: white;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.22);
}

.button:hover {
    background: var(--accent-dark);
}

.text-link {
    color: var(--text);
    font-weight: 800;
    text-decoration-thickness: 2px;
    text-underline-offset: 5px;
}

.hero-card,
.card,
.panel,
.step,
.output-box {
    border: 1px solid var(--border);
    background: var(--card);
    border-radius: var(--radius);
}

.hero-card {
    padding: 30px;
    box-shadow: var(--shadow);
}

.card-label {
    color: var(--muted);
    font-weight: 800;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-card h2 {
    font-size: 2rem;
    margin-bottom: 14px;
}

.hero-card p,
.card p,
.step p,
.output-box p,
.narrow p {
    color: var(--muted);
}

ul {
    padding-left: 1.2rem;
    margin-bottom: 0;
}

li+li {
    margin-top: 8px;
}

.muted-section {
    background: var(--soft);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-heading {
    max-width: 740px;
    margin-bottom: 36px;
}

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

.cards {
    grid-template-columns: repeat(4, 1fr);
}

.card {
    padding: 24px;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.panel {
    padding: 30px;
}

.check-list,
.cross-list {
    list-style: none;
    padding: 0;
}

.check-list li,
.cross-list li {
    position: relative;
    padding-left: 30px;
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #16a34a;
    font-weight: 900;
}

.cross-list li::before {
    content: "×";
    position: absolute;
    left: 0;
    color: #dc2626;
    font-weight: 900;
}

.steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.step {
    padding: 22px;
}

.step span {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    font-weight: 900;
    margin-bottom: 18px;
}

.example-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
}

.output-box {
    padding: 28px;
    background: white;
}

.sample-summary {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
    font-weight: 700;
}

.final-cta {
    text-align: center;
}

.final-cta p {
    color: var(--muted);
    font-size: 1.1rem;
}

.small-note {
    margin-top: 16px;
    font-size: 0.95rem !important;
}

.site-footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    color: var(--muted);
    font-size: 0.95rem;
}

.footer-content p {
    margin: 0;
}

.footer-content a {
    color: var(--muted);
}

@media (max-width: 900px) {
    .hero-grid,
    .split,
    .example-box {
        grid-template-columns: 1fr;
    }
    .cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 620px) {
    .section {
        padding: 64px 0;
    }
    .hero {
        padding-top: 72px;
    }
    .nav {
        min-height: 64px;
    }
    .nav-link {
        display: none;
    }
    .cards,
    .steps {
        grid-template-columns: 1fr;
    }
    .hero-actions {
        align-items: stretch;
    }
    .button,
    .text-link {
        width: 100%;
        text-align: center;
    }
    .footer-content {
        flex-direction: column;
    }
}