:root {
  color-scheme: light;
  --paper: #f7f7f2;
  --surface: #fffefa;
  --ink: #253d37;
  --muted: #647168;
  --line: #dfe4db;
  --accent: #356d60;
  --accent-light: #eaf1eb;
  --radius: 15px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; color: var(--ink); background: var(--paper); font-size: 14px; line-height: 1.7; -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; color: inherit; }
button, a, input, textarea, select, summary { touch-action: manipulation; }
button, summary { cursor: pointer; }
button:disabled { opacity: .5; cursor: not-allowed; }
:focus-visible { outline: 3px solid #548f7b; outline-offset: 3px; }
a { color: inherit; text-underline-offset: 4px; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: 600; }
h2 { font-size: 16px; }
h3 { font-size: 14px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.page-width { width: min(1220px, calc(100% - 72px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 10; padding: 12px 18px; background: var(--surface); }
.skip-link:focus { top: 10px; }
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 70px; }
.brand { text-decoration: none; font-size: 21px; font-weight: 650; letter-spacing: -.5px; }
.brand span { color: var(--muted); font-size: 13px; font-weight: 400; margin-left: 9px; letter-spacing: 0; }
.local-badge { color: var(--accent); background: var(--accent-light); border-radius: 5px; padding: 4px 9px; font-size: 12px; }
.page-intro { padding: 34px 0 20px; }
.eyebrow { font-size: 11px; color: var(--muted); font-weight: 600; letter-spacing: .14em; }
h1 { font-size: clamp(26px, 3.2vw, 38px); letter-spacing: -.04em; line-height: 1.4; margin: 6px 0 9px; }
.page-intro > p:last-child { color: var(--muted); }
.status-line { min-height: 24px; color: var(--accent); font-size: 13px; margin-bottom: 16px; overflow-wrap: anywhere; }
.notice { padding: 13px 17px; border: 1px solid; border-radius: 9px; margin-bottom: 16px; font-size: 13px; overflow-wrap: anywhere; }
.error { color: #903e30; background: #fff1eb; border-color: #eccfc4; }
.warning { color: #75541f; background: #fbf3dc; border-color: #e6d8b4; }
.workspace { display: grid; grid-template-columns: 380px minmax(0, 1fr); gap: 24px; align-items: start; }
.workspace > *, .panel-heading > *, .result-details > * { min-width: 0; }
.settings-panel, .result-panel { border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius); }
.setting-section, .generate-section { padding: 22px; }
.setting-section { border-bottom: 1px solid var(--line); }
.step { color: var(--muted); margin-right: 10px; font-size: 12px; font-weight: 400; }
.mode-options { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 4px; padding: 4px; margin: 17px 0; border: 1px solid var(--line); border-radius: 8px; background: #f1f4ec; }
.mode-options label { position: relative; min-width: 0; }
.mode-options input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.mode-options span { display: flex; align-items: center; justify-content: center; height: 100%; padding: 9px 5px; border-radius: 5px; font-size: 12px; text-align: center; cursor: pointer; }
.mode-options input:checked + span { background: var(--surface); color: var(--accent); box-shadow: 0 1px 4px #253d3714; }
.mode-options input:focus-visible + span { outline: 3px solid #548f7b; }
.mode-options input:disabled + span { cursor: not-allowed; }
.field-label { display: block; font-size: 13px; font-weight: 500; margin: 16px 0 7px; }
textarea, select { width: 100%; min-width: 0; max-width: 100%; border: 1px solid #cfd8ce; background: var(--surface); border-radius: 7px; padding: 11px; }
textarea { display: block; resize: vertical; min-height: 132px; }
textarea::placeholder { color: #788276; }
select { min-height: 44px; }
[aria-invalid="true"] { outline: 2px solid #aa5746; outline-offset: 2px; }
.field-meta { display: flex; justify-content: space-between; gap: 5px 10px; flex-wrap: wrap; margin-top: 5px; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.field-help { font-size: 12px; line-height: 1.8; color: var(--muted); margin-top: 8px; overflow-wrap: anywhere; }
.presets { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.chip { border: 1px solid var(--line); border-radius: 999px; background: var(--surface); padding: 6px 10px; min-height: 36px; font-size: 12px; }
.chip:hover:not(:disabled) { background: var(--accent-light); border-color: var(--accent); }
.field-heading { display: flex; justify-content: space-between; gap: 10px; align-items: center; flex-wrap: wrap; }
.field-heading output { font-size: 13px; color: var(--accent); font-variant-numeric: tabular-nums; }
input[type="range"] { width: 100%; margin: 0; display: block; min-height: 36px; accent-color: var(--accent); }
.consent-label { display: flex; align-items: flex-start; gap: 9px; margin-top: 15px; font-size: 12px; cursor: pointer; }
.consent-label input { flex-shrink: 0; width: 17px; height: 17px; margin: 3px 0 0; accent-color: var(--accent); }
.button { min-height: 44px; padding: 10px 15px; border: 1px solid #c6d3c7; border-radius: 7px; background: var(--surface); font-size: 13px; font-weight: 500; }
.button:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-light); }
.button.primary { color: white; background: var(--accent); border-color: var(--accent); }
.button.primary:hover:not(:disabled) { background: #29594d; }
.full-width { width: 100%; margin-top: 17px; }
.text-button { border: 0; padding: 6px 0; min-height: 36px; background: transparent; color: var(--accent); font-size: 12px; text-decoration: underline; text-underline-offset: 4px; text-align: left; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 22px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin-top: 3px; font-size: 18px; }
.state-label { color: var(--accent); background: var(--accent-light); border-radius: 5px; font-size: 12px; padding: 4px 8px; }
.waiting-panel { padding: 18px 22px; background: var(--accent-light); font-size: 12px; color: var(--accent); border-bottom: 1px solid var(--line); }
.waiting-panel strong { font-size: 14px; }
#elapsed-time { font-size: 22px; font-variant-numeric: tabular-nums; margin: 5px 0; }
.empty-state { min-height: 452px; padding: 65px 24px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; background: #f3f5ed; border-radius: 0 0 var(--radius) var(--radius); }
.empty-wordmark { font-size: 10px; letter-spacing: .18em; color: var(--muted); margin-bottom: 35px; }
.empty-state h3 { font-size: 18px; }
.empty-state p { margin-top: 12px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.empty-tag { margin-top: 34px; font-size: 11px; color: var(--accent); border-top: 1px solid #d7e0d3; padding-top: 16px; }
.result-details { padding: 20px 22px; }
.inline-warning { color: #75541f; background: #fbf3dc; border-left: 3px solid #bd9656; padding: 10px 12px; margin-top: 12px; font-size: 12px; overflow-wrap: anywhere; }
#result-context { margin: 0 0 16px; }
.waveform-figure { margin: 0; }
#waveform { display: block; width: 100%; height: 140px; border-radius: 8px; background: #eef2e9; }
figcaption { margin-top: 7px; font-size: 11px; color: var(--muted); }
audio { display: block; width: 100%; min-width: 0; max-width: 100%; height: 46px; margin: 15px 0 22px; }
.result-metadata { display: grid; gap: 8px; font-size: 12px; }
.result-metadata > div { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 8px; }
dt { color: var(--muted); }
dd { overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.warnings-section { margin-top: 20px; border-top: 1px solid var(--line); padding-top: 16px; }
.warnings { margin: 8px 0 0; padding-left: 19px; color: #75541f; font-size: 12px; }
.warnings li { margin-bottom: 7px; white-space: pre-wrap; overflow-wrap: anywhere; }
details { font-size: 12px; margin-top: 12px; min-width: 0; }
summary { color: var(--accent); padding: 8px 0; overflow-wrap: anywhere; }
details p { margin-top: 7px; overflow-wrap: anywhere; }
.pre-wrap { white-space: pre-wrap; overflow-wrap: anywhere; }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
#save-state.unsaved { color: #75541f; }
.recovery-panel { padding: 20px 22px; color: #75541f; background: #fbf3dc; border-top: 1px solid #e6d8b4; border-radius: 0 0 var(--radius) var(--radius); }
.recovery-panel p { font-size: 12px; margin: 8px 0 12px; overflow-wrap: anywhere; }
.recovery-list { list-style: none; margin: 12px 0 0; padding: 0; }
.recovery-list > li { padding-top: 12px; border-top: 1px solid #e6d8b4; }
.history-section { margin-top: 34px; }
.history-heading { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.history-heading h2 { font-size: 18px; }
.history-empty { padding: 32px 16px; margin-top: 17px; text-align: center; color: var(--muted); border-block: 1px solid var(--line); font-size: 13px; }
.history-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.history-list li { min-width: 0; }
.history-card { width: 100%; height: 100%; padding: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; text-align: left; }
.history-card[aria-current="true"], .history-card:hover:not(:disabled) { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.history-card strong { display: block; font-size: 13px; font-weight: 500; overflow-wrap: anywhere; }
.history-card small { display: block; color: var(--muted); font-size: 11px; margin-top: 6px; overflow-wrap: anywhere; }
.history-card .history-snippet { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; white-space: pre-wrap; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 18px; font-size: 12px; }
.site-footer { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 36px; padding-block: 25px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--accent); text-decoration: underline; }
.studio-views { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 22px; }
.mixer-workspace { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 0 24px 24px; }
.mixer-workspace > .panel-heading { padding-inline: 0; }
.mixer-intro { margin: 18px 0 12px; max-width: 900px; }
.mixer-import, .mixer-compare, .mixer-source-heading, .mixer-render-actions, .mixer-presets, .mixer-export { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.mixer-import { padding-bottom: 22px; }
.mixer-import .consent-label { flex-basis: 100%; margin-top: 3px; }
.mixer-import label.button { position: relative; cursor: pointer; }
.mixer-import label.button:focus-within { outline: 3px solid #548f7b; outline-offset: 3px; }
.mixer-import:disabled label.button { opacity: .5; cursor: not-allowed; }
.mixer-recording { padding: 18px; margin-bottom: 20px; border: 1px solid #b4cabc; border-radius: 9px; background: var(--accent-light); display: grid; grid-template-columns: auto minmax(80px, 1fr) auto; align-items: center; gap: 12px; }
.mixer-recording meter { width: 100%; height: 18px; }
.mixer-recording p { grid-column: 1 / -1; margin-top: 0; }
#mix-record-time { font-variant-numeric: tabular-nums; }
.mixer-empty { padding: 42px 16px; text-align: center; border: 1px dashed #c6d3c7; border-radius: 10px; background: #f3f5ed; font-size: 16px; }
.mixer-empty span { display: block; margin-top: 10px; font-size: 12px; color: var(--muted); }
.mixer-source-heading { justify-content: space-between; margin: 2px 0 15px; }
.mixer-source-heading > div { min-width: 0; flex: 1 1 300px; }
#mix-source-name { overflow-wrap: anywhere; font-size: 17px; }
#mix-waveform { display: block; width: 100%; height: 150px; background: #eef2e9; border-radius: 8px; }
.mixer-compare { margin-top: 16px; }
.mixer-compare .field-help { margin-top: 0; }
#mix-player { margin-bottom: 6px; }
.mixer-parameter-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
.mixer-module { padding: 19px; border: 1px solid var(--line); border-radius: 10px; min-width: 0; }
.mixer-module h3 { margin-bottom: 16px; }
.mixer-field { display: grid; grid-template-columns: minmax(0, 1fr) 83px; gap: 3px 9px; align-items: center; margin-top: 13px; }
.mixer-field label { font-size: 12px; line-height: 1.5; }
.mixer-field input[type="number"] { min-width: 0; width: 100%; padding: 6px; border: 1px solid #cfd8ce; border-radius: 5px; background: var(--surface); min-height: 38px; font-size: 13px; font-variant-numeric: tabular-nums; }
.mixer-field input[type="range"] { grid-column: 1 / -1; min-height: 26px; }
.mixer-output-settings { margin-top: 16px; padding: 18px 20px; background: #f3f5ed; border: 1px solid var(--line); border-radius: 10px; }
#mix-output-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
#mix-output-fields .mixer-field { margin-top: 0; }
.mixer-presets { margin-top: 15px; font-size: 12px; color: var(--muted); }
.mixer-presets .text-button { margin-left: auto; }
.mixer-render-actions { margin: 20px 0; }
.mixer-render-actions .field-help { margin: 0; }
.mixer-measurements { margin-top: 24px; padding: 20px; border: 1px solid var(--line); border-radius: 10px; }
.mixer-measurements dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px 24px; margin-top: 14px; font-size: 12px; }
.mixer-measurements dd { font-size: 15px; margin-top: 3px; }
.mixer-export { padding-block: 24px; border-bottom: 1px solid var(--line); }
.mixer-export select { width: 148px; }
.mixer-export > p { flex-basis: 100%; margin: 0; }
.mixer-projects { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; padding-top: 24px; }
.mixer-projects h3, .mixer-projects p { grid-column: 1 / -1; margin: 0; }
@media (max-width: 1050px) {
  .page-width { width: calc(100% - 40px); }
  .workspace { grid-template-columns: 340px minmax(0, 1fr); gap: 18px; }
  .setting-section, .generate-section, .panel-heading, .result-details, .recovery-panel { padding: 18px; }
}
@media (max-width: 800px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .empty-state { min-height: 280px; padding: 35px 20px; }
  .history-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mixer-parameter-grid { grid-template-columns: minmax(0, 1fr); }
  .mixer-module > div { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; }
}
@media (max-width: 560px) {
  .page-width { width: calc(100% - 28px); }
  .topbar { min-height: 62px; gap: 8px; }
  .brand { font-size: 19px; }
  .brand span { display: none; }
  .local-badge { font-size: 11px; }
  .page-intro { padding-top: 25px; }
  .page-intro > p:last-child { font-size: 13px; }
  .settings-panel, .result-panel { border-radius: 12px; }
  .setting-section, .generate-section, .panel-heading, .result-details, .recovery-panel { padding: 17px 15px; }
  textarea, select { font-size: 16px; }
  .waiting-panel { padding: 15px; }
  .history-list { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .result-actions > .button { width: 100%; }
  .mixer-workspace { padding: 0 15px 18px; }
  .mixer-import > .button, .mixer-render-actions > .button { width: 100%; text-align: center; }
  .mixer-recording { grid-template-columns: minmax(0, 1fr); padding: 14px; }
  .mixer-module { padding: 15px; }
  .mixer-module > div, #mix-output-fields, .mixer-measurements dl { grid-template-columns: minmax(0, 1fr); }
  .mixer-field input[type="number"] { font-size: 16px; }
  #mix-output-fields { gap: 16px; }
  .mixer-output-settings, .mixer-measurements { padding: 15px; }
  .mixer-presets .text-button { margin-left: 0; }
  .mixer-export > .button { width: 100%; }
  .mixer-projects { grid-template-columns: minmax(0, 1fr); }
}