:root {
    color-scheme: dark;
    --background: #07111f;
    --surface: rgba(18, 32, 52, 0.78);
    --surface-strong: #15243a;
    --text: #f4f7fb;
    --muted: #9baabe;
    --primary: #7c5cff;
    --secondary: #29d3b2;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
    color-scheme: light;
    --background: #edf2f8;
    --surface: rgba(255, 255, 255, 0.82);
    --surface-strong: #ffffff;
    --text: #142033;
    --muted: #657286;
    --border: rgba(20, 32, 51, 0.12);
    --shadow: 0 24px 70px rgba(32, 52, 84, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, sans-serif;
    background:
        radial-gradient(circle at 15% 10%, rgba(124, 92, 255, 0.25), transparent 32%),
        radial-gradient(circle at 85% 80%, rgba(41, 211, 178, 0.18), transparent 30%),
        var(--background);
    transition: background 250ms ease, color 250ms ease;
}

button,
a {
    font: inherit;
}

button {
    cursor: pointer;
}

.page {
    width: min(1180px, calc(100% - 40px));
    margin: auto;
}

.header {
    min-height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
    font-weight: 800;
    text-decoration: none;
}

.brand-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    color: white;
    background: linear-gradient(135deg, var(--primary), #a965ff);
    box-shadow: 0 10px 30px rgba(124, 92, 255, 0.35);
}

.hero {
    min-height: 520px;
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    align-items: center;
    gap: 64px;
}

.eyebrow {
    color: var(--secondary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

h1 {
    max-width: 800px;
    margin: 18px 0;
    font-size: clamp(2.7rem, 7vw, 5.7rem);
    line-height: 0.98;
    letter-spacing: -0.06em;
}

.hero p {
    max-width: 650px;
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1.75;
}

.actions {
    margin-top: 34px;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.primary-button,
.secondary-button {
    min-height: 46px;
    padding: 0 20px;
    border-radius: 13px;
    border: 1px solid var(--border);
}

.primary-button {
    color: white;
    border: 0;
    background: linear-gradient(135deg, var(--primary), #a55cff);
    box-shadow: 0 12px 32px rgba(124, 92, 255, 0.32);
}

.secondary-button {
    color: var(--text);
    background: var(--surface);
    backdrop-filter: blur(16px);
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-2px);
}

#message {
    color: var(--muted);
}

.visual-card {
    min-height: 320px;
    padding: 34px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 1px solid var(--border);
    border-radius: 28px;
    background: var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.status {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--secondary);
    box-shadow: 0 0 18px var(--secondary);
}

.visual-card strong {
    font-size: 6rem;
    line-height: 1;
    color: var(--secondary);
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.feature-card {
    padding: 26px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--surface);
}

.feature-number {
    color: var(--primary);
    font-weight: 800;
}

.feature-card h2 {
    margin-bottom: 8px;
}

.feature-card p,
footer {
    color: var(--muted);
}

footer {
    padding: 48px 0;
    text-align: center;
}

@media (max-width: 760px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 70px 0;
    }

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

    .visual-card {
        min-height: 240px;
    }
}