:root {
    --bg: #f3efe7;
    --bg-soft: #faf8f4;
    --surface: #ffffff;
    --ink: #1f2d3d;
    --ink-muted: #42586b;
    --brand: #0f4c5c;
    --brand-2: #1a6f85;
    --accent: #cc7a00;
    --border: #d5dce3;
    --shadow-sm: 0 6px 18px rgba(17, 36, 56, 0.08);
    --shadow-md: 0 14px 30px rgba(17, 36, 56, 0.12);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.75;
    color: var(--ink);
    background:
        radial-gradient(circle at 15% 0%, #fff3d8 0%, transparent 35%),
        radial-gradient(circle at 85% 100%, #dceef2 0%, transparent 38%),
        var(--bg);
}

.beta-popup {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: rgba(17, 36, 56, 0.58);
    z-index: 1200;
}

.beta-popup.is-visible {
    display: flex;
}

.beta-popup__panel {
    width: min(94vw, 560px);
    background: #ffffff;
    color: var(--ink);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow-md);
    padding: 1.25rem 1.25rem 1.1rem;
}

.beta-popup__panel h2 {
    margin-bottom: 0.55rem;
    font-size: clamp(1.2rem, 2.5vw, 1.55rem);
}

.beta-popup__panel p {
    margin-bottom: 0.9rem;
    line-height: 1.55;
}

header {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
    color: white;
    padding: 2rem 0 1.25rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

header h1 {
    letter-spacing: 0.06em;
    font-size: clamp(2rem, 4vw, 3.1rem);
    margin-bottom: 0.75rem;
}

header nav {
    background-color: rgba(7, 27, 48, 0.45);
    backdrop-filter: blur(6px);
    padding: 0.8rem 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 1.5rem;
}

nav li {
    margin: 0;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    transition: color 0.3s ease, background-color 0.25s ease;
}

nav a:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.2);
}

main {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1.25rem;
}

main > nav {
    position: static;
    background: transparent;
    backdrop-filter: none;
    padding: 0;
    margin-bottom: 1rem;
}

main > nav ul {
    justify-content: flex-start;
}

main > nav a {
    color: var(--brand);
    background-color: #e6f1f4;
    border: 1px solid #c6dbe1;
}

main > nav a:hover {
    color: #08333f;
    background-color: #d8ebf0;
}

section {
    background-color: var(--surface);
    margin-bottom: 1.4rem;
    padding: clamp(1.2rem, 2vw, 2rem);
    border-radius: 14px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

section h2 {
    color: var(--ink);
    margin-bottom: 0.8rem;
    font-size: clamp(1.45rem, 2.5vw, 2rem);
}

section h3 {
    color: var(--ink);
    margin-bottom: 0.6rem;
    font-size: clamp(1.2rem, 2.1vw, 1.5rem);
}

.lead-panel {
    background: linear-gradient(180deg, #fffdf8 0%, #fff7ea 100%);
    border: 1px solid #ead9bf;
}

.lead-text {
    font-size: 1.08rem;
    max-width: 70ch;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.1rem;
}

.summary-card {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 8px 18px rgba(17, 36, 56, 0.05);
}

.summary-card h3 {
    margin-bottom: 0.45rem;
}

.summary-card p {
    margin-bottom: 0;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.1rem;
}

main p,
main li,
main section {
    color: var(--ink-muted);
}

main section p {
    max-width: 74ch;
    margin-bottom: 0.9rem;
}

main section a {
    color: var(--brand);
    text-decoration: underline;
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.15em;
}

main section a:hover {
    color: #08333f;
}

footer {
    background-color: var(--ink);
    color: white;
    text-align: center;
    padding: 1.4rem;
    margin-top: 3rem;
}

button {
    background-color: var(--brand);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

.button-link {
    display: inline-block;
    background-color: var(--brand);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 0.96rem;
    text-decoration: none;
    box-shadow: 0 10px 20px rgba(15, 76, 92, 0.25);
    transition: background-color 0.3s ease;
}

.button-link:hover {
    background-color: #0c3d4a;
}

button:hover {
    background-color: #0c3d4a;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

@media (max-width: 760px) {
    body {
        line-height: 1.65;
    }

    nav ul {
        justify-content: flex-start;
        gap: 0.6rem;
    }

    nav a {
        font-size: 0.9rem;
        padding: 0.3rem 0.55rem;
    }

    main {
        margin-top: 1.2rem;
        padding: 0 0.85rem;
    }

    .summary-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: no-preference) {
    section {
        animation: rise-in 420ms ease both;
    }

    section:nth-of-type(2) { animation-delay: 40ms; }
    section:nth-of-type(3) { animation-delay: 80ms; }
    section:nth-of-type(4) { animation-delay: 120ms; }
}

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}