:root {
  --ink: #111315;
  --ink-soft: #1a1d20;
  --paper: #ece8df;
  --paper-deep: #d8d2c7;
  --signal: #ff4b36;
  --signal-dark: #c92e1f;
  --acid: #d8ff45;
  --steel: #8f9aa3;
  --line: rgba(236, 232, 223, .18);
  --text: #f2eee6;
  --muted: #9ba0a5;
  --prompt-paper: #ece8df;
  --prompt-text: #22201c;
  --panel-radius: 2px;
  --display: "Bodoni 72", "Songti SC", "STSong", serif;
  --body: "Avenir Next", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --mono: "SFMono-Regular", "Roboto Mono", "Courier New", monospace;
}

body.light {
  --ink: #e7e1d7;
  --ink-soft: #f2eee6;
  --paper: #17191b;
  --paper-deep: #2b2e31;
  --line: rgba(17, 19, 21, .15);
  --text: #151719;
  --muted: #62676b;
  --prompt-paper: #fffdf8;
  --prompt-text: #22201c;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    linear-gradient(90deg, transparent 49.92%, rgba(255,255,255,.025) 50%, transparent 50.08%),
    var(--ink);
  font-family: var(--body);
  line-height: 1.55;
  transition: color .25s ease, background-color .25s ease;
}

button, input, select, textarea { font: inherit; }
button { color: inherit; }

.grain {
  position: fixed;
  inset: 0;
  z-index: 20;
  opacity: .055;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 15;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 clamp(20px, 4vw, 70px);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--ink) 90%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--ink);
  background: var(--signal);
  font: 800 13px var(--mono);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 76% 100%, 0 100%);
}

.brand strong, .brand small { display: block; }
.brand strong { letter-spacing: .18em; font-size: 14px; }
.brand small { margin-top: 3px; color: var(--muted); font: 9px var(--mono); letter-spacing: .13em; }

.masthead-meta { display: flex; align-items: center; gap: 10px; color: var(--muted); font: 11px var(--mono); }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 12px var(--acid); }
.icon-button { width: 34px; height: 34px; margin-left: 12px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
.icon-button:hover { border-color: var(--signal); color: var(--signal); }

main { width: min(1600px, 100%); margin: 0 auto; padding: 0 clamp(20px, 4vw, 70px) 80px; }

.hero {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 40px;
  align-items: end;
  min-height: 440px;
  padding: 74px 0 58px;
  border-bottom: 1px solid var(--line);
}

.eyebrow { margin: 0 0 22px; color: var(--signal); font: 700 11px var(--mono); letter-spacing: .18em; }
.hero h1 { margin: 0; font: 400 clamp(52px, 7.5vw, 118px)/.89 var(--display); letter-spacing: -.05em; }
.hero h1 em { color: var(--signal); font-style: italic; }
.hero-note { position: relative; padding: 28px 0 4px 70px; border-top: 4px solid var(--acid); }
.hero-note::before { content: "8"; position: absolute; left: 0; top: 8px; color: var(--acid); font: 700 54px/1 var(--mono); }
.hero-note span { color: var(--text); font: 700 12px var(--mono); letter-spacing: .2em; }
.hero-note p { max-width: 430px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }

.workspace { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(360px, .85fr); gap: 1px; background: var(--line); }
.control-panel, .output-panel { background: var(--ink); }

.panel-section { padding: clamp(30px, 4vw, 58px); border-bottom: 1px solid var(--line); }
.section-spec { background: linear-gradient(135deg, rgba(255,75,54,.08), transparent 55%); }
.section-heading { display: flex; align-items: flex-start; gap: 18px; margin-bottom: 30px; }
.section-heading > div { flex: 1; }
.section-heading h2 { margin: -3px 0 2px; font: 400 28px var(--display); letter-spacing: -.02em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 12px; }
.section-index { color: var(--signal); font: 700 10px var(--mono); letter-spacing: .08em; }

.field-grid { display: grid; gap: 18px; margin-bottom: 18px; }
.field-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.field-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field-grid.compact { margin: 14px 0 0; }

label { display: block; color: var(--muted); font: 10px var(--mono); letter-spacing: .07em; text-transform: uppercase; }
input, select, textarea {
  width: 100%;
  margin-top: 8px;
  padding: 12px 13px;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  background: rgba(255,255,255,.025);
  font-family: var(--body);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  transition: border-color .18s ease, background .18s ease;
}

textarea { resize: vertical; min-height: 74px; }
input:focus, select:focus, textarea:focus { border-color: var(--signal); background: rgba(255,75,54,.045); }
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }

.toggle-row { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 24px; }
.switch { display: flex; align-items: center; gap: 9px; cursor: pointer; color: var(--text); font-size: 11px; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch span { position: relative; width: 35px; height: 18px; margin: 0; border: 1px solid var(--line); background: rgba(255,255,255,.03); }
.switch span::after { content: ""; position: absolute; width: 10px; height: 10px; top: 3px; left: 4px; background: var(--muted); transition: .18s ease; }
.switch input:checked + span { border-color: var(--signal); }
.switch input:checked + span::after { left: 19px; background: var(--signal); }

.small-button, .secondary-button, .generate-button, .remove-button {
  border: 0;
  cursor: pointer;
  transition: transform .15s ease, color .15s ease, border-color .15s ease, background .15s ease;
}
.small-button { align-self: center; padding: 8px 10px; color: var(--acid); border: 1px solid var(--line); background: transparent; font: 10px var(--mono); }
.small-button:hover { border-color: var(--acid); }
.remove-button { width: 30px; height: 30px; color: var(--muted); background: transparent; font-size: 22px; line-height: 1; }
.remove-button:hover { color: var(--signal); transform: rotate(90deg); }

.asset-table-header, .asset-row { display: grid; grid-template-columns: 145px 1fr 1fr 32px; gap: 10px; align-items: center; }
.asset-table-header { margin: 0 0 6px; color: var(--muted); font: 9px var(--mono); letter-spacing: .08em; }
.asset-row { padding: 8px 0; border-top: 1px solid var(--line); animation: slide-in .28s ease both; }
.asset-id { display: grid; grid-template-columns: 1fr 50px; gap: 6px; }
.asset-row input, .asset-row select { margin: 0; }

.timeline-list { counter-reset: beat; display: grid; gap: 16px; }
.timeline-card { counter-increment: beat; position: relative; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 18px; padding: 22px 44px 22px 20px; border: 1px solid var(--line); background: rgba(255,255,255,.02); animation: slide-in .28s ease both; }
.timeline-card::before { content: "段落 " counter(beat, decimal-leading-zero); position: absolute; right: 42px; top: -7px; padding: 0 7px; color: var(--signal); background: var(--ink); font: 9px var(--mono); }
.time-cell { display: grid; grid-template-columns: 1fr auto 1fr; gap: 5px; align-items: center; align-self: start; }
.time-cell input { margin: 0; padding: 10px 5px; text-align: center; color: var(--acid); font: 700 18px var(--mono); }
.time-cell span { color: var(--muted); }
.time-cell b { grid-column: 1/-1; color: var(--muted); font: 8px var(--mono); letter-spacing: .2em; text-align: center; }
.beat-remove { position: absolute; right: 7px; top: 7px; }

.form-actions { display: flex; gap: 10px; align-items: center; padding: 28px clamp(30px, 4vw, 58px) 58px; }
.secondary-button { padding: 13px 16px; color: var(--text); border: 1px solid var(--line); background: transparent; font: 10px var(--mono); }
.secondary-button:hover { border-color: var(--text); }
.generate-button { display: flex; justify-content: space-between; align-items: center; gap: 28px; min-width: 180px; margin-left: auto; padding: 14px 17px; color: #111315; background: var(--signal); font: 700 11px var(--mono); text-transform: uppercase; }
.generate-button:hover { background: var(--acid); transform: translateY(-2px); }
.generate-button b { font-weight: 400; opacity: .6; }

.output-panel { min-width: 0; }
.output-sticky { position: sticky; top: 76px; max-height: calc(100vh - 76px); overflow: auto; padding: 34px; }
.slate-top { display: grid; grid-template-columns: 1.5fr .6fr .6fr; border: 1px solid var(--line); border-bottom: 0; }
.slate-top > div { padding: 12px; border-right: 1px solid var(--line); }
.slate-top > div:last-child { border-right: 0; }
.slate-top span, .slate-top strong { display: block; }
.slate-top span { color: var(--muted); font: 8px var(--mono); letter-spacing: .14em; }
.slate-top strong { margin-top: 4px; overflow: hidden; text-overflow: ellipsis; color: var(--text); font: 700 13px var(--mono); white-space: nowrap; }
#score { color: var(--acid); }
.score-track { height: 5px; background: rgba(255,255,255,.08); }
.score-track i { display: block; width: 0; height: 100%; background: var(--acid); transition: width .45s cubic-bezier(.2,.8,.2,1), background .25s; }

.findings { display: grid; gap: 6px; min-height: 92px; padding: 18px 0 22px; border-bottom: 1px solid var(--line); }
.finding { display: grid; grid-template-columns: 46px 1fr; gap: 10px; align-items: start; color: var(--muted); font-size: 11px; }
.finding b { padding: 2px 4px; color: var(--ink); background: var(--acid); font: 8px var(--mono); text-align: center; }
.finding.warn b { background: #ffc857; }
.finding.error b { color: white; background: var(--signal); }
.empty-state { margin: 0; color: var(--muted); font-size: 12px; }

.output-heading { display: flex; align-items: center; justify-content: space-between; margin: 28px 0 12px; }
.output-heading > div { display: flex; align-items: center; gap: 12px; }
.output-heading h2 { margin: 0; font: 400 25px var(--display); }
.output-heading > span { color: var(--muted); font: 9px var(--mono); }
.prompt-output { min-height: 440px; margin: 0; padding: 20px; color: var(--prompt-text); border: 0; background: var(--prompt-paper); font: 13px/1.75 var(--body); }
.prompt-output:focus { border: 0; background: var(--prompt-paper); }
.output-actions { display: flex; gap: 8px; margin-top: 10px; }
.output-actions .generate-button { flex: 1; margin: 0; justify-content: center; min-width: 0; }
.copy-status { height: 18px; margin: 8px 0; color: var(--acid); font: 9px var(--mono); }
.parameter-note { border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.parameter-note summary { padding: 14px 0; color: var(--text); cursor: pointer; font: 10px var(--mono); }
.parameter-note p { margin: 0 0 14px; }

footer { display: flex; gap: 24px; justify-content: space-between; padding: 25px clamp(20px, 4vw, 70px); color: var(--muted); border-top: 1px solid var(--line); font: 9px var(--mono); letter-spacing: .08em; }
footer a { color: var(--signal); text-decoration: none; }

@keyframes slide-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

@media (max-width: 1100px) {
  .workspace { grid-template-columns: 1fr; }
  .output-sticky { position: static; max-height: none; }
  .field-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { min-height: 360px; }
}

@media (max-width: 680px) {
  .masthead-meta > span:not(.live-dot) { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 54px 0 40px; }
  .hero-note { padding-left: 58px; }
  .field-grid.four, .field-grid.two { grid-template-columns: 1fr; }
  .asset-table-header { display: none; }
  .asset-row { grid-template-columns: 1fr 32px; padding: 14px 0; }
  .asset-id, .asset-role, .asset-exclude { grid-column: 1; }
  .asset-row .remove-button { grid-column: 2; grid-row: 1; }
  .timeline-card { grid-template-columns: 1fr; }
  .form-actions { align-items: stretch; flex-direction: column; }
  .generate-button { width: 100%; margin: 0; }
  .secondary-button { width: 100%; }
  footer { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}