:root {
    color-scheme: dark;
    --bg: #050b11;
    --surface: rgba(7, 16, 28, 0.80);
    --surface-strong: rgba(8, 19, 34, 0.92);
    --border: rgba(94, 231, 208, 0.16);
    --border-strong: rgba(255, 255, 255, 0.10);
    --text: #edf8ff;
    --muted: #a8dfe8;
    --accent: #5ee7d0;
    --accent-strong: #4c96ff;
    --shadow: 0 32px 90px rgba(0, 0, 0, 0.24);
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: radial-gradient(circle at top, rgba(94, 231, 208, 0.08), transparent 25%),
        radial-gradient(circle at 82% 10%, rgba(76, 150, 255, 0.08), transparent 22%),
        linear-gradient(180deg, #050b11 0%, #04101d 50%, #02060b 100%);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgba(94, 231, 208, 0.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(94, 231, 208, 0.12) 1px, transparent 1px);
    background-size: 36px 36px;
    opacity: 0.12;
    pointer-events: none;
    z-index: -1;
}

a,
button {
    font: inherit;
}

img {
    display: block;
    width: 100%;
    height: auto;
}

.page-shell {
    width: min(1280px, calc(100% - 32px));
    margin: 0 auto;
    padding: 0 0 40px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 0;
    background: rgba(3, 9, 18, 0.92);
    border-bottom: 1px solid rgba(94, 231, 208, 0.12);
    backdrop-filter: blur(18px);
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 220px;
}

.brand-logo {
    color: #76f0e4;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 1rem;
    font-weight: 800;
}

.brand-subtitle {
    color: var(--muted);
    font-size: 0.76rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex: 1 1 0;
    min-width: 0;
    overflow-x: auto;
    padding-bottom: 2px;
}

.nav-links::-webkit-scrollbar {
    display: none;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 14px;
    transition: background 180ms ease, color 180ms ease, transform 180ms ease;
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: #f6fdff;
    background: rgba(94, 231, 208, 0.12);
    transform: translateY(-1px);
}

.donate-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border-radius: 999px;
    background: linear-gradient(135deg, #5ee7d0, #4c96ff);
    color: #04101d;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 18px 40px rgba(94, 231, 208, 0.18);
    transition: transform 180ms ease, filter 180ms ease;
    white-space: nowrap;
}

.donate-link:hover {
    transform: translateY(-1px);
    filter: brightness(1.02);
}

.hero {
    margin-top: 32px;
    padding: 48px;
    background: rgba(6, 13, 24, 0.84);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 34px;
    box-shadow: var(--shadow);
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.8rem, 5vw, 4.8rem);
    line-height: 0.98;
    letter-spacing: -0.04em;
}

.hero p {
    margin: 22px 0 0;
    max-width: 820px;
    color: #c8e7f4;
    line-height: 1.85;
    font-size: 1.05rem;
}

.hero-actions {
    margin-top: 34px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 24px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button {
    background: linear-gradient(135deg, #5ee7d0, #4c96ff);
    color: #04101d;
    box-shadow: 0 18px 40px rgba(94, 231, 208, 0.18);
}

.secondary-button {
    background: rgba(255, 255, 255, 0.06);
    color: #e8f8ff;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.button:hover,
.secondary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 22px 42px rgba(94, 231, 208, 0.2);
}

.section {
    margin-top: 42px;
    padding: 34px;
    border-radius: 32px;
    background: rgba(6, 13, 24, 0.78);
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: var(--shadow);
}

.section h2 {
    margin: 0 0 22px;
    font-size: clamp(2rem, 3vw, 2.8rem);
    letter-spacing: -0.03em;
    color: #98f6ff;
}

.section p,
.section li {
    color: #c9e9f8;
    line-height: 1.85;
}

.grid {
    display: grid;
    gap: 22px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(94, 231, 208, 0.10);
    border-radius: 28px;
    padding: 28px;
    box-shadow: 0 20px 56px rgba(0, 0, 0, 0.18);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.card h3 {
    margin: 0;
    font-size: 1.22rem;
    color: #eff9ff;
}

.card p {
    margin: 0;
    color: #bcdce7;
}

.card ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.card li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
}

.card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.preview-panel {
    overflow: hidden;
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(94, 231, 208, 0.08), rgba(10, 20, 32, 0.96));
    border: 1px solid rgba(94, 231, 208, 0.12);
}

.preview-panel img {
    width: 100%;
    display: block;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.highlight-panel {
    padding: 24px 28px;
    border-radius: 24px;
    background: rgba(94, 231, 208, 0.08);
    border: 1px solid rgba(94, 231, 208, 0.14);
    color: #dbf9ff;
}

.highlight-panel strong {
    color: #f3ffff;
}

.footer {
    margin-top: 60px;
    padding: 24px 0 12px;
    text-align: center;
    color: #91d7e7;
    font-size: 0.95rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer a {
    color: #7ef2f0;
}

.small-note {
    color: #8cb5c8;
    font-size: 0.95rem;
}

@media (max-width: 980px) {
    .topbar {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
        padding: 20px 0;
    }

    .hero {
        padding: 32px;
    }

    .section {
        padding: 28px;
    }
}

@media (max-width: 680px) {
    .page-shell {
        width: 100%;
        padding: 0 16px 28px;
    }

    .hero {
        padding: 26px;
    }

    .topbar {
        gap: 12px;
        padding: 18px 0;
    }

    .nav-links {
        justify-content: center;
        gap: 8px;
    }

    .hero h1 {
        font-size: 2.6rem;
    }

    .button,
    .secondary-button,
    .donate-link {
        width: 100%;
    }

    .grid {
        gap: 18px;
    }

    .section h2 {
        font-size: 2.1rem;
    }
}