.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: 28px; }
.dc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.dc-field label { display: block; font-size: 11px; color: #aaa; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.dc-input-wrap { display: flex; align-items: stretch; background: #141414; border: 1px solid #262626; border-radius: 10px; overflow: hidden; }
.dc-input-wrap .cur { padding: 12px 10px; background: #0d0d0d; color: #888; font-family: 'SF Mono', Monaco, monospace; font-size: 14px; }
.dc-input-wrap input { flex: 1; padding: 12px 10px; background: transparent; border: none; color: #e1e1e1; font-size: 15px; font-variant-numeric: tabular-nums; outline: none; }
.dc-input-wrap:focus-within { border-color: #ff4444; }
.dc-result { padding: 18px 20px; background: #141414; border: 1px solid #ff4444; border-radius: 12px; color: #fff; font-size: 15px; margin-bottom: 26px; }
.dc-result .big { font-size: 24px; font-weight: 700; }
.dc-stacked { background: #0f0f0f; border: 1px solid #1f1f1f; border-radius: 12px; padding: 18px 22px; }
.dc-stacked h2 { font-size: 13px; color: #aaa; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.dc-stacked .hint { font-size: 13px; color: #888; margin-bottom: 12px; }
.dc-stacked code { color: #ff4444; background: #141414; padding: 2px 6px; border-radius: 4px; font-size: 12px; }
.dc-stack-row { display: flex; gap: 10px; align-items: center; }
.dc-stack-row input { flex: 1; padding: 10px 12px; background: #141414; border: 1px solid #262626; color: #e1e1e1; font-size: 14px; font-family: 'SF Mono', Monaco, monospace; border-radius: 8px; outline: none; }
.dc-stack-result { min-width: 80px; padding: 10px 14px; background: #141414; border: 1px solid #ff4444; color: #fff; font-weight: 700; border-radius: 8px; font-variant-numeric: tabular-nums; text-align: center; }
@media (max-width: 600px) { .page h1 { font-size: 28px; } .dc-grid { grid-template-columns: 1fr; } }