:root {
    --bg: #f5f1e8;
    --surface: rgba(255, 251, 245, 0.9);
    --surface-strong: #fff8ee;
    --ink: #1e2a27;
    --muted: #56625f;
    --accent: #0f6a5b;
    --accent-soft: #d6efe6;
    --line: rgba(30, 42, 39, 0.12);
    --shadow: 0 24px 80px rgba(15, 34, 31, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(15, 106, 91, 0.16), transparent 30rem),
        radial-gradient(circle at top right, rgba(183, 131, 67, 0.18), transparent 26rem),
        linear-gradient(180deg, #f7f4ed 0%, var(--bg) 100%);
    color: var(--ink);
    font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
}

.shell {
    width: min(1080px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 3rem 0 4rem;
}

.hero,
.panel,
.roadmap {
    backdrop-filter: blur(18px);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.hero {
    padding: 2rem;
    display: grid;
    gap: 1.5rem;
}

.eyebrow {
    margin: 0;
    color: var(--accent);
    font-family: "Space Grotesk", "Avenir Next Condensed", sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.hero-copy h1,
.roadmap-copy h2,
.panel h2 {
    margin: 0;
    font-family: "Space Grotesk", "Avenir Next Condensed", sans-serif;
    font-weight: 700;
    letter-spacing: -0.04em;
}

.hero-copy h1 {
    font-size: clamp(3.25rem, 10vw, 6rem);
    line-height: 0.94;
}

.expansion {
    margin: 0.9rem 0 0;
    color: var(--accent);
    font-family: "Space Grotesk", "Avenir Next Condensed", sans-serif;
    font-size: clamp(1rem, 2vw, 1.35rem);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.lede,
.roadmap-copy p,
.panel-detail,
.roadmap-list {
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.7;
}

.lede {
    max-width: 44rem;
    margin: 1rem 0 0;
    font-size: 1.1rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0 1.2rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 700;
    text-decoration: none;
    transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--ink);
    color: #f8f3ea;
}

.button-secondary {
    background: rgba(255, 255, 255, 0.45);
    border-color: var(--line);
    color: var(--ink);
}

.panel-grid {
    margin-top: 1.25rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.panel {
    padding: 1.5rem;
}

.panel-accent {
    background: linear-gradient(160deg, var(--surface-strong) 0%, var(--accent-soft) 100%);
}

.panel-label {
    margin: 0 0 0.65rem;
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.panel h2 {
    font-size: clamp(1.6rem, 3vw, 2.3rem);
}

.panel-detail {
    margin: 0.9rem 0 0;
}

.roadmap {
    margin-top: 1.25rem;
    padding: 2rem;
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 2rem;
}

.roadmap-copy p {
    margin: 1rem 0 0;
    max-width: 44rem;
}

.roadmap-list {
    margin: 0;
    padding-left: 1.2rem;
}

.roadmap-list li + li {
    margin-top: 0.8rem;
}

code {
    font-family: "IBM Plex Mono", "SFMono-Regular", monospace;
    font-size: 0.95em;
}

@media (max-width: 820px) {
    .shell {
        width: min(100% - 1rem, 48rem);
        padding-top: 1rem;
    }

    .panel-grid,
    .roadmap {
        grid-template-columns: 1fr;
    }

    .hero,
    .panel,
    .roadmap {
        border-radius: 22px;
    }

    .hero,
    .roadmap {
        padding: 1.4rem;
    }
}