:root {
    --ink: #0A1628;
    --ink-soft: #1a2a44;
    --line: rgba(255,255,255,0.08);
    --green: #00D4B8;
    --coral: #F38281;
    --sun: #FCE28A;
    --text: #E8EEF7;
    --muted: #8a98ad;
}
* { box-sizing: border-box; }
html, body {
    margin: 0; padding: 0;
    background: radial-gradient(ellipse at top, #142340 0%, var(--ink) 60%);
    color: var(--text);
    font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
}
.wrap {
    max-width: 880px;
    margin: 0 auto;
    padding: 64px 24px 96px;
}
header { text-align: center; margin-bottom: 56px; }
.badge {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--green);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
h1 {
    font-size: 56px;
    margin: 18px 0 8px;
    background: linear-gradient(135deg, var(--sun), var(--coral));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { font-size: 18px; color: var(--muted); max-width: 560px; margin: 0 auto; }

.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 48px; }
.card {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 24px;
}
.card h3 { margin: 0 0 8px; color: var(--green); }
.card p { margin: 0; color: var(--muted); }
.card code {
    background: var(--ink-soft); color: var(--sun);
    padding: 1px 6px; border-radius: 4px; font-size: 12px;
}

.try {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 28px;
}
.try h2 { margin: 0 0 14px; }
.try input {
    width: 100%;
    padding: 12px 14px;
    background: var(--ink);
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 10px;
    font-size: 15px;
}
.try button {
    margin-top: 12px;
    padding: 11px 22px;
    background: var(--green);
    color: var(--ink);
    border: 0;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
}
.try button[disabled] { opacity: 0.5; cursor: wait; }
#out {
    margin-top: 18px;
    background: var(--ink);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 16px;
    overflow: auto;
    max-height: 480px;
    font-size: 13px;
    color: var(--sun);
}
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; } h1 { font-size: 40px; } }