* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.wrap {
    max-width: 480px;
    width: 100%;
    padding: 32px;
    text-align: center;
}
h1 { font-size: 1.6rem; margin-bottom: 4px; word-break: break-all; }
.subtitle { color: #94a3b8; margin-bottom: 24px; }
.form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
input, button {
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid #334155;
    font-size: 1rem;
}
input {
    background: #1e293b;
    color: #e2e8f0;
}
button {
    background: #3b82f6;
    color: white;
    border: none;
    cursor: pointer;
    font-weight: 600;
}
button:hover { background: #2563eb; }
.error {
    margin-top: 16px;
    padding: 10px;
    background: #7f1d1d;
    border-radius: 8px;
    color: #fecaca;
}
.result {
    margin-top: 20px;
    padding: 14px;
    background: #14532d;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    word-break: break-all;
}
.result a { color: #bbf7d0; font-weight: 600; }
.api-hint {
    margin-top: 32px;
    text-align: left;
    color: #94a3b8;
    font-size: 0.85rem;
}
.api-hint code {
    display: block;
    background: #1e293b;
    padding: 10px;
    border-radius: 6px;
    overflow-x: auto;
    color: #cbd5e1;
}