:root {
    --primary-50: #f0f4f8;
    --primary-100: #d9e2ec;
    --primary-500: #1e3a5f;
    --primary-700: #162c3c;
    --primary-900: #0f1c2e;
    --accent-500: #0ea5e9;
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --slate-500: #64748b;
    --slate-700: #334155;
    --white: #ffffff;
    --shadow: 0 18px 45px rgba(30, 58, 95, 0.18);
    --radius: 16px;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    scroll-behavior: smooth;
}

body {
    min-height: 100%;
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(14, 165, 233, 0.16), transparent 34rem),
        radial-gradient(circle at 92% 18%, rgba(16, 185, 129, 0.12), transparent 26rem),
        linear-gradient(180deg, var(--primary-50) 0%, #ffffff 54%, #f8fafc 100%);
    color: var(--primary-900);
}

a {
    color: inherit;
}

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

.page {
    width: min(1120px, calc(100% - 40px));
    min-height: 100vh;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 28px 0 18px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand img {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    box-shadow: 0 8px 22px rgba(15, 28, 46, 0.16);
}

.brand strong {
    display: block;
    color: var(--primary-700);
    font-size: 1.04rem;
    line-height: 1;
}

.brand > span {
    display: block;
    min-width: 0;
}

.brand > span > span {
    display: block;
    margin-top: 3px;
    color: var(--slate-500);
    font-size: 0.84rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    padding: 10px 12px;
    border-radius: 999px;
    color: var(--slate-700);
    font-size: 0.92rem;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary-700);
    outline: none;
}

.nav-links .download-link {
    background: var(--primary-700);
    color: var(--white);
}

.nav-links .download-link:hover,
.nav-links .download-link:focus-visible {
    background: var(--primary-500);
    color: var(--white);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 18px;
    padding: 8px 12px;
    border: 1px solid rgba(14, 165, 233, 0.22);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.76);
    color: var(--primary-700);
    font-size: 0.9rem;
    font-weight: 700;
}

.eyebrow::before {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--accent-500), var(--success-500));
    content: "";
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 18px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.96rem;
    font-weight: 800;
    text-decoration: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
    outline: none;
}

.button.primary {
    background: var(--primary-700);
    color: var(--white);
    box-shadow: 0 14px 30px rgba(30, 58, 95, 0.22);
}

.button.primary:hover,
.button.primary:focus-visible {
    background: var(--primary-500);
    box-shadow: 0 18px 34px rgba(30, 58, 95, 0.28);
}

.button.secondary {
    border-color: var(--primary-100);
    background: rgba(255, 255, 255, 0.82);
    color: var(--primary-700);
}

.button.secondary:hover,
.button.secondary:focus-visible {
    border-color: rgba(14, 165, 233, 0.42);
    box-shadow: 0 12px 24px rgba(30, 58, 95, 0.12);
}

footer {
    padding: 0 0 28px;
    color: var(--slate-500);
    font-size: 0.88rem;
}

@media (max-width: 900px) {
    .page {
        width: min(100% - 28px, 680px);
    }
}

@media (max-width: 620px) {
    .topbar {
        align-items: flex-start;
        flex-direction: column;
        padding-top: 20px;
    }

    .nav-links {
        width: 100%;
        flex-wrap: wrap;
    }

    .actions {
        display: grid;
    }

    .button {
        width: 100%;
    }
}