.page { max-width: 720px; margin: 32px auto; padding: 0 20px; }
.page h1 { font-size: 36px; color: #fff; margin-bottom: 8px; letter-spacing: -0.5px; }
.page .subtitle { color: #888; font-size: 15px; margin-bottom: 20px; }
.page label { display: block; font-size: 12px; color: #aaa; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.ht-grid { display: grid; grid-template-columns: 1fr 1fr 110px; gap: 12px; margin-bottom: 14px; }
.ht-field input { width: 100%; padding: 12px 14px; background: #141414; border: 1px solid #262626; color: #e1e1e1; font-size: 14px; border-radius: 10px; font-family: 'SF Mono', Monaco, monospace; outline: none; }
.ht-field input:focus { border-color: #ff4444; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; font-size: 14px; margin-bottom: 8px; }
.btn:disabled { opacity: 0.5; cursor: wait; }
.err { min-height: 18px; font-size: 12px; color: #ff7070; margin-top: 8px; }
.ht-output-row { display: flex; gap: 8px; align-items: stretch; }
.ht-output { flex: 1; padding: 14px 16px; background: #0f0f0f; border: 1px solid #1f1f1f; color: #fff; font-family: 'SF Mono', Monaco, monospace; font-size: 13px; word-break: break-all; border-radius: 10px; min-height: 48px; }
.ht-output.empty { color: #555; }
.copy-btn { padding: 6px 14px; background: #1f1f1f; border: 1px solid #333; color: #ccc; font-size: 13px; font-weight: 500; border-radius: 6px; cursor: pointer; font-family: inherit; transition: all 0.15s; }
.copy-btn:hover { background: #2a2a2a; border-color: #444; color: #fff; }
.copy-btn.copied { border-color: #4ade80; color: #4ade80; }
.hint { font-size: 12px; color: #666; margin-top: 12px; line-height: 1.5; }
.hint code { color: #ff4444; background: #141414; padding: 2px 6px; border-radius: 4px; font-size: 11px; }
@media (max-width: 600px) { .page h1 { font-size: 28px; } .ht-grid { grid-template-columns: 1fr; } }