* { box-sizing: border-box; }
:root { --bg: #0a0d12; --card: #121821; --line: #232c38; --text: #e8edf3; --muted: #8a96a6; --green: #8ef06b; --cyan: #2de0d0; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, sans-serif; }
a { color: inherit; text-decoration: none; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; border-bottom: 1px solid var(--line); }
.logo { font-family: monospace; font-weight: bold; }
.logo span, .hero h1 span { color: var(--green); }
.link { font-family: monospace; font-size: 13px; color: var(--muted); border: 1px solid var(--line); padding: 4px 10px; border-radius: 8px; }
main { max-width: 900px; margin: 0 auto; padding: 32px 20px; }
.hero h1 { font-size: clamp(32px, 6vw, 54px); line-height: 1.1; margin: 0 0 12px; }
.hero p, .muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-top: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; transition: border-color .2s; }
.card:hover { border-color: var(--green); }
.card b { display: block; margin: 8px 0 4px; }
.card small { color: var(--muted); }
.card .ic { font-size: 22px; }
.tool { display: none; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.tool:target { display: block; }
body:has(.tool:target) .hero { display: none; }
.tool h2 { margin-top: 0; }
.tool h3 { margin: 24px 0 8px; color: var(--muted); font-size: 14px; text-transform: uppercase; }
label { display: block; margin: 12px 0; font-size: 14px; color: var(--muted); }
input, select, textarea { display: block; width: 100%; margin-top: 6px; padding: 10px 12px; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 10px; font: inherit; }
input[type=color] { height: 42px; padding: 4px; }
input[type=checkbox] { display: inline; width: auto; margin: 0 6px 0 0; }
input[type=range] { padding: 0; accent-color: var(--green); }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.checks { display: flex; flex-wrap: wrap; gap: 16px; }
.checks label { display: flex; align-items: center; color: var(--text); }
button { margin: 8px 8px 0 0; padding: 10px 18px; border: 0; border-radius: 10px; background: var(--green); color: #0a0d12; font: inherit; font-weight: 600; cursor: pointer; }
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
button:disabled { opacity: .5; cursor: wait; }
.preview { display: block; max-width: 100%; max-height: 360px; margin: 16px 0; border-radius: 12px; }
.checker { background: repeating-conic-gradient(#ccc 0 25%, #fff 0 50%) 0 0 / 20px 20px; }
.out { font-family: monospace; font-size: 20px; word-break: break-all; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; margin-top: 16px; }
.stats div { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.stats b, .big { display: block; font-family: monospace; font-size: 22px; color: var(--green); }
audio { width: 100%; margin-top: 12px; }
footer { text-align: center; padding: 32px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }
.back { display:inline-block; margin-bottom:12px; font-size:13px; color: var(--muted); font-family: monospace; }