:root {
  color-scheme: dark;
  --canvas: #0f0e0c;
  --surface: #171613;
  --raised: #1e1d19;
  --hairline: #2b2924;
  --hairline-strong: #3b3832;
  --ink: #f2efe8;
  --body: #cfcbc1;
  --mute: #9a968c;
  --marker: #ffc533;
  --marker-soft: rgba(255, 197, 51, 0.16);
  --danger: #ff7a6b;
  --serif: ui-serif, "New York", "Iowan Old Style", "Charter", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --gutter: clamp(1.25rem, 0.6rem + 3vw, 4rem);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--canvas);
  color: var(--body);
  font: 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
[hidden] { display: none !important; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 13px; }
a { color: var(--ink); }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 20px var(--gutter);
  max-width: 1200px; margin: 0 auto;
}
.mark { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 600; letter-spacing: -0.01em; }
.mark-dot { width: 18px; height: 10px; border-radius: 2px; background: var(--marker); }
.local { color: var(--mute); font-size: 13px; text-align: right; }

main { max-width: 1200px; margin: 0 auto; padding: 0 var(--gutter); }

.intro { padding: clamp(2rem, 1rem + 5vw, 5.5rem) 0 clamp(1.75rem, 1rem + 2vw, 3rem); max-width: 780px; }
h1 {
  font: 500 clamp(2.25rem, 1.5rem + 3.2vw, 4rem)/1.04 var(--serif);
  letter-spacing: -0.025em; color: var(--ink); margin: 0 0 1.25rem; text-wrap: balance;
}
.lede { font-size: clamp(1.05rem, 1rem + 0.25vw, 1.2rem); max-width: 60ch; margin: 0; text-wrap: pretty; }
h2 { font: 500 1.6rem/1.2 var(--serif); color: var(--ink); letter-spacing: -0.015em; margin: 0 0 1rem; }

.desk {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: clamp(1rem, 0.6rem + 2vw, 2rem);
}
.drop {
  position: relative;
  display: grid; place-items: center; align-content: center; text-align: center; gap: 6px;
  min-height: 210px; padding: 2rem 1rem;
  border: 1.5px dashed var(--hairline-strong); border-radius: 10px;
  cursor: pointer; transition: border-color .15s, background .15s;
}
.drop:hover, .drop.over { border-color: var(--marker); background: var(--marker-soft); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.drop:focus-within { outline: 2px solid var(--marker); outline-offset: 3px; }
.drop-title { color: var(--ink); font-size: 1.15rem; font-weight: 500; }
.drop-sub { color: var(--mute); font-size: 14px; max-width: 46ch; }
.load-alt { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 18px; border-radius: 8px;
  font: 500 15px/1 var(--sans); text-decoration: none; cursor: pointer;
  border: 1px solid transparent; transition: background .15s, border-color .15s, color .15s;
}
.btn:focus-visible { outline: 2px solid var(--marker); outline-offset: 2px; }
.btn.primary { background: var(--marker); color: #1a1505; }
.btn.primary:hover { background: #ffd35e; }
.btn.primary:disabled { opacity: .5; cursor: progress; }
.btn.ghost { background: var(--raised); border-color: var(--hairline-strong); color: var(--ink); }
.btn.ghost:hover { border-color: var(--mute); }
.btn.link { background: none; color: var(--mute); padding: 0 4px; text-decoration: underline; text-underline-offset: 3px; }
.btn.link:hover { color: var(--ink); }
.rec-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--danger); }
.recording .rec-dot { animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .25; } }

.file-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; margin-bottom: 14px; }
.file-row > div { min-width: 0; }
.file-name { margin: 0; color: var(--ink); font-weight: 500; overflow-wrap: anywhere; }
.file-meta { margin: 2px 0 0; color: var(--mute); }

.wave { margin: 0 0 18px; }
.wave canvas { display: block; width: 100%; height: 120px; background: var(--canvas); border-radius: 8px; border: 1px solid var(--hairline); cursor: pointer; }
.wave figcaption { display: flex; align-items: center; gap: 8px; margin-top: 8px; color: var(--mute); font-size: 14px; }
.key { width: 14px; height: 8px; border-radius: 2px; flex: none; }
.key-voice { background: var(--marker); }
.key-out { background: var(--ink); }

.controls { display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px; border-top: 1px solid var(--hairline); padding-top: 4px; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { color: var(--ink); font-weight: 500; margin: 16px 0 10px; padding: 0; }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg button {
  min-height: 40px; padding: 0 14px; border-radius: 999px;
  background: transparent; color: var(--body); border: 1px solid var(--hairline-strong);
  font: 500 14px/1 var(--sans); cursor: pointer;
}
.seg button:hover { border-color: var(--mute); color: var(--ink); }
.seg button[aria-checked="true"] { background: var(--ink); color: var(--canvas); border-color: var(--ink); }
.seg button:focus-visible { outline: 2px solid var(--marker); outline-offset: 2px; }

.sliders { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px 28px; }
.slider { display: grid; gap: 8px; }
.s-head { display: flex; justify-content: space-between; color: var(--ink); font-size: 15px; }
.s-head output { color: var(--mute); }
input[type=range] { width: 100%; accent-color: var(--marker); height: 28px; margin: 0; }

.opts { display: grid; gap: 10px; }
.check { display: flex; flex-wrap: nowrap; align-items: center; gap: 8px; color: var(--body); font-size: 15px; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--marker); margin: 0; }
.pro-opt:has(input:disabled) { color: var(--mute); cursor: default; }
.tag { font: 600 11px/1 var(--mono); color: #1a1505; background: var(--marker); padding: 3px 6px; border-radius: 4px; }
.hint { flex-basis: 100%; padding-left: 26px; color: var(--mute); font-size: 13px; }

#go { justify-self: start; min-width: 220px; }
.progress { display: flex; align-items: center; gap: 12px; }
.bar { flex: 1; max-width: 360px; height: 4px; background: var(--hairline); border-radius: 2px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--marker); transition: width .2s; }
.progress span { color: var(--mute); }

.result { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--hairline); }
.listen { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.listen .time { color: var(--mute); min-width: 44px; }
.listen #download { margin-left: auto; }
.btn.play { background: var(--raised); border-color: var(--hairline-strong); color: var(--ink); min-width: 96px; }
.note { color: var(--mute); font-size: 14px; margin: 14px 0 0; }

.batch { list-style: none; margin: 22px 0 0; padding: 0; border-top: 1px solid var(--hairline); }
.batch li { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--hairline); color: var(--body); overflow-wrap: anywhere; }
.batch li span { min-width: 0; }

.error { color: var(--danger); margin: 14px 0 0; }

.how { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 0 4rem; padding: clamp(3rem, 2rem + 4vw, 6rem) 0 2rem; }
.how ol { margin: 0; padding: 0; list-style: none; counter-reset: s; }
.how li { counter-increment: s; position: relative; padding: 0 0 18px 44px; margin-bottom: 18px; border-bottom: 1px solid var(--hairline); max-width: 62ch; }
.how li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 2px; font: 13px var(--mono); color: var(--marker); }
.how strong { color: var(--ink); font-weight: 500; }
.caveat { grid-column: 2; margin: 0; color: var(--mute); max-width: 62ch; }

.pro {
  display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 2rem; align-items: center;
  margin: 2rem 0 4rem; padding: clamp(1.25rem, 0.8rem + 2vw, 2.25rem);
  border: 1px solid var(--hairline-strong); border-left: 4px solid var(--marker); border-radius: 14px;
  background: var(--surface);
}
.pro p { margin: 0; max-width: 60ch; }
.pro strong { color: var(--ink); font-weight: 500; }
.pro-buy { display: grid; gap: 10px; justify-items: start; }
.price { color: var(--ink); }
.price span { font: 500 2rem/1 var(--serif); margin-right: 6px; }
.pro-state { color: var(--marker); margin: 0; }

.foot { max-width: 1200px; margin: 0 auto; padding: 24px var(--gutter) 40px; border-top: 1px solid var(--hairline); color: var(--mute); font-size: 13px; }
.foot a { color: inherit; }

@media (max-width: 760px) {
  .local { display: none; }
  .sliders { grid-template-columns: minmax(0, 1fr); }
  .how { grid-template-columns: minmax(0, 1fr); }
  .caveat { grid-column: 1; }
  .pro { grid-template-columns: minmax(0, 1fr); }
  .listen #download { margin-left: 0; width: 100%; }
  #go { width: 100%; justify-self: stretch; }
  .drop { min-height: 170px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}
.pro-opt { flex-wrap: wrap; }