:root {
  --color-primary: #4f46e5;
  --color-secondary: #6d5dfb;
  --color-background: #f4f5fa;
  --color-surface: #ffffff;
  --color-foreground: #111827;
  --color-muted: #64748b;
  --color-border: #e2e6f0;
  --color-success: #0f8a5f;
  --color-destructive: #dc2626;
  --color-ring: #4f46e5;
  --surface-subtle: #f8f9fc;
  --surface-selected: #f0f1ff;
  --shadow-card: 0 12px 32px rgba(51, 65, 85, 0.07);
  --shadow-workbench: 0 26px 70px rgba(51, 65, 85, 0.11);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  color: var(--color-foreground);
  background: var(--color-background);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 9% 5%, rgba(109, 93, 251, 0.08), transparent 28rem),
    radial-gradient(circle at 93% 14%, rgba(15, 138, 95, 0.055), transparent 25rem),
    var(--color-background);
  color: var(--color-foreground);
  line-height: 1.55;
}

button, input, select, textarea { font: inherit; }
button, select, input[type="range"], input[type="checkbox"] { cursor: pointer; }
a { color: inherit; }

button, input, select, textarea, a {
  transition: color 200ms cubic-bezier(.2,.8,.2,1), background-color 200ms cubic-bezier(.2,.8,.2,1), border-color 200ms cubic-bezier(.2,.8,.2,1), box-shadow 200ms cubic-bezier(.2,.8,.2,1), opacity 200ms cubic-bezier(.2,.8,.2,1);
}

:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.34);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--color-foreground);
  color: white;
  transform: translateY(-160%);
  text-decoration: none;
}
.skip-link:focus { transform: translateY(0); }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.site-header {
  width: min(1440px, calc(100% - 48px));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(79, 70, 229, 0.22);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.11);
}
.brand-mark svg { width: 27px; fill: none; stroke: var(--color-primary); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.brand strong { display: block; font-size: 17px; letter-spacing: .01em; line-height: 1.05; }
.brand small { display: block; margin-top: 3px; color: var(--color-muted); font-size: 11px; font-weight: 650; letter-spacing: .11em; text-transform: uppercase; }

.service-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: #475569;
  font-size: 13px;
  font-weight: 600;
}
.service-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-success); box-shadow: 0 0 0 5px rgba(15, 138, 95, 0.1); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.contact-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid rgba(79, 70, 229, .2);
  border-radius: 12px;
  background: rgba(255, 255, 255, .75);
  color: #4338ca;
  box-shadow: 0 7px 22px rgba(79, 70, 229, .07);
  font-size: 13px;
  font-weight: 700;
}
.contact-trigger:hover { border-color: rgba(79, 70, 229, .42); background: #fff; box-shadow: 0 10px 26px rgba(79, 70, 229, .12); }
.contact-trigger svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }

.page-shell { width: min(1440px, calc(100% - 48px)); margin: 0 auto; }

.intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  padding: 18px 14px 18px;
}

.eyebrow, .section-kicker {
  margin: 0 0 8px;
  color: var(--color-primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .13em;
}

h1, h2, p { margin-top: 0; }
h1 { max-width: 740px; margin-bottom: 12px; font-size: clamp(28px, 3.5vw, 48px); line-height: 1.13; letter-spacing: -.035em; }
.intro-copy { max-width: 650px; margin-bottom: 0; color: var(--color-muted); font-size: 15px; }

.limit-note { display: flex; gap: 30px; margin: 0; flex: 0 0 auto; }
.limit-note div { padding-left: 16px; border-left: 1px solid #d7dcea; }
.limit-note dt { color: var(--color-muted); font-size: 11px; }
.limit-note dd { margin: 3px 0 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; font-weight: 700; }

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(310px, .78fr) minmax(0, 1.52fr);
  grid-template-areas:
    "voices editor"
    "voices parameters"
    "voices action"
    "voices result";
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(226, 230, 240, 0.9);
  border-radius: 28px;
  background: rgba(248, 249, 252, 0.86);
  box-shadow: var(--shadow-workbench);
  backdrop-filter: blur(14px);
}

.studio-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}
.editor-card { grid-area: editor; }
.voice-card { grid-area: voices; display: flex; min-height: 620px; flex-direction: column; }
.parameter-card { grid-area: parameters; }
.action-card { grid-area: action; }
.result-card { grid-area: result; scroll-margin-top: 20px; }

.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-heading h2 { margin: 0; font-size: 17px; line-height: 1.35; letter-spacing: -.012em; }
.compact-heading { align-items: center; margin-bottom: 15px; }
.section-kicker { margin-bottom: 4px; color: #727c91; font-size: 10px; }

.icon-text-button, .quiet-button {
  min-height: 44px;
  padding: 0 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: #475569;
  font-size: 13px;
  font-weight: 650;
}
.icon-text-button { display: inline-flex; align-items: center; gap: 7px; }
.icon-text-button:hover, .quiet-button:hover { background: #f0f2f7; color: var(--color-foreground); }
.icon-text-button svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

#source-text {
  display: block;
  width: 100%;
  min-height: 220px;
  resize: vertical;
  padding: 18px;
  border: 1px solid #d9deea;
  border-radius: 14px;
  background: linear-gradient(180deg, #fff 0%, #fbfcff 100%);
  color: var(--color-foreground);
  font-size: 16px;
  line-height: 1.8;
}
#source-text::placeholder, input::placeholder { color: #94a3b8; }
#source-text:focus, input:focus, select:focus { border-color: var(--color-ring); outline: none; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12); }

.editor-meta { display: flex; justify-content: space-between; gap: 16px; margin-top: 10px; color: var(--color-muted); font-size: 12px; }
#character-count { flex: 0 0 auto; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: #475569; }

.count-label, .result-state { color: var(--color-muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px; }
label { display: block; margin-bottom: 6px; color: #334155; font-size: 12px; font-weight: 650; }

.input-with-icon { position: relative; }
.input-with-icon svg { position: absolute; top: 50%; left: 13px; width: 18px; transform: translateY(-50%); fill: none; stroke: #8491a5; stroke-width: 1.8; stroke-linecap: round; }
input[type="search"], select {
  width: 100%;
  min-height: 44px;
  border: 1px solid #dce1eb;
  border-radius: 10px;
  background: #fff;
  color: var(--color-foreground);
  font-size: 13px;
}
input[type="search"] { padding: 0 13px 0 40px; }
select {
  appearance: none;
  padding: 0 38px 0 12px;
  overflow: hidden;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m7 10 5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  text-overflow: ellipsis;
}

.filter-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-top: 12px; }
.filter-grid > div { min-width: 0; }
.favorite-toggle { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; margin: 8px 0 4px; cursor: pointer; color: #475569; }
.favorite-toggle input { width: 17px; height: 17px; accent-color: var(--color-primary); }

.voice-list { display: grid; align-content: start; gap: 8px; flex: 1; min-height: 260px; max-height: 450px; margin-top: 6px; padding-right: 4px; overflow: auto; scrollbar-color: #cbd2df transparent; }
.voice-option {
  display: grid;
  grid-template-columns: 39px minmax(0, 1fr) 44px;
  align-items: center;
  min-height: 66px;
  padding: 8px 4px 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #fff;
  text-align: left;
}
.voice-option:hover { border-color: #c6cce0; background: #fbfbfe; }
.voice-option[aria-selected="true"] { border-color: var(--color-primary); background: var(--surface-selected); box-shadow: inset 3px 0 0 var(--color-primary), 0 6px 18px rgba(79, 70, 229, .09); }
.voice-glyph { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 10px; background: #eceefe; color: var(--color-primary); }
.voice-glyph svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.voice-copy { min-width: 0; }
.voice-copy strong, .voice-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.voice-copy strong { font-size: 13px; }
.voice-copy small { margin-top: 2px; color: var(--color-muted); font-size: 11px; }
.favorite-button { display: grid; place-items: center; width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; color: #8b95a6; }
.favorite-button:hover { background: rgba(79, 70, 229, .08); color: var(--color-primary); }
.favorite-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.favorite-button.is-favorite svg { fill: var(--color-primary); color: var(--color-primary); }
.voice-skeleton { height: 66px; border-radius: 12px; background: linear-gradient(100deg, #f1f3f7 30%, #f8f9fc 48%, #f1f3f7 66%); background-size: 220% 100%; animation: shimmer 1.4s linear infinite; }
@keyframes shimmer { to { background-position-x: -220%; } }
.empty-message { margin: 20px 6px; color: var(--color-muted); font-size: 13px; text-align: center; }

.range-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.range-control { padding: 14px; border: 1px solid var(--color-border); border-radius: 13px; background: var(--surface-subtle); }
.range-label, .range-scale { display: flex; justify-content: space-between; gap: 12px; }
.range-label label { margin: 0; }
.range-label output { color: var(--color-primary); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; font-weight: 700; }
.range-scale { color: #8a96a8; font-size: 10px; }
input[type="range"] { width: 100%; min-height: 44px; margin: 4px 0 0; accent-color: var(--color-primary); }

.action-card { padding: 2px; }
.generate-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 56px;
  padding: 0 24px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(110deg, #426fe9 0%, #5748e8 55%, #6d5dfb 100%);
  color: white;
  box-shadow: 0 12px 26px rgba(79, 70, 229, .22);
  font-size: 15px;
  font-weight: 750;
  letter-spacing: .01em;
}
.generate-button:hover { box-shadow: 0 15px 32px rgba(79, 70, 229, .28); opacity: .96; }
.generate-button:disabled { cursor: not-allowed; opacity: .6; box-shadow: none; }
.generate-button svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; }
.action-card > p { margin: 9px 0 0; color: var(--color-muted); font-size: 11px; text-align: center; }
.turnstile-container { margin-bottom: 12px; }

.status-message { padding: 13px 14px; border-radius: 11px; background: var(--surface-subtle); color: #475569; font-size: 13px; }
.status-message.is-error { background: #fff1f2; color: #b42318; }
.status-message.is-success { background: #ecfdf5; color: #087454; }
.progress-track { height: 7px; margin-top: 14px; overflow: hidden; border-radius: 999px; background: #e8eaf2; }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #4f46e5, #7c6cf5); transition: width 220ms cubic-bezier(.2,.8,.2,1); }
.audio-region { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; margin-top: 14px; }
audio { width: 100%; min-height: 44px; }
.download-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 16px; border: 1px solid #cdd3e0; border-radius: 11px; color: #334155; font-size: 13px; font-weight: 700; text-decoration: none; }
.download-button:hover { border-color: var(--color-primary); color: var(--color-primary); background: #f7f7ff; }
.download-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

.trust-note { display: flex; gap: 14px; width: min(920px, 100%); margin: 22px auto 0; padding: 17px 20px; color: #566176; }
.trust-note svg { flex: 0 0 auto; width: 22px; margin-top: 1px; fill: none; stroke: var(--color-success); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.trust-note strong { color: #334155; font-size: 12px; }
.trust-note p { margin: 4px 0 0; font-size: 11px; line-height: 1.65; }
footer { padding: 28px 20px 38px; color: #8490a3; font-size: 11px; text-align: center; }

body.has-open-dialog { overflow: hidden; }
.contact-dialog {
  width: min(380px, calc(100% - 28px));
  max-height: calc(100vh - 28px);
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 22px;
  background: transparent;
  color: var(--color-foreground);
}
.contact-dialog::backdrop { background: rgba(15, 23, 42, .48); backdrop-filter: blur(6px); }
.contact-dialog-card {
  position: relative;
  max-height: calc(100vh - 28px);
  padding: 25px;
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, .7);
  border-radius: 22px;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 28px 80px rgba(15, 23, 42, .28);
  text-align: center;
}
.contact-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: #64748b;
}
.contact-close:hover { background: #f1f3f8; color: var(--color-foreground); }
.contact-close svg { width: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.contact-kicker { margin: 0 0 5px; color: var(--color-primary); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 10px; font-weight: 750; letter-spacing: .16em; }
.contact-dialog h2 { margin: 0; font-size: 21px; letter-spacing: -.02em; }
#contact-dialog-description { margin: 6px 0 18px; color: var(--color-muted); font-size: 13px; }
.qr-frame { padding: 8px; border: 1px solid var(--color-border); border-radius: 17px; background: #fff; }
.qr-frame img { display: block; width: 100%; height: auto; max-height: min(560px, calc(100vh - 215px)); border-radius: 11px; object-fit: contain; }
.contact-hint { margin: 14px 0 0; color: #8490a3; font-size: 11px; }

[hidden] { display: none !important; }

@media (max-width: 1024px) {
  .site-header, .page-shell { width: min(100% - 32px, 1100px); }
  .intro { padding-inline: 4px; }
  .workspace-grid { grid-template-columns: minmax(280px, .8fr) minmax(0, 1.35fr); }
  .filter-grid { grid-template-columns: 1fr 1fr; }
  .filter-grid > :last-child { grid-column: 1 / -1; }
  .range-grid { gap: 8px; }
}

@media (max-width: 768px) {
  .site-header, .page-shell { width: min(100% - 24px, 720px); }
  .site-header { min-height: 64px; }
  .service-note { font-size: 11px; }
  .intro { display: block; padding: 20px 2px 18px; }
  .intro-copy { font-size: 14px; }
  .limit-note { margin-top: 20px; }
  .workspace-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "editor" "voices" "parameters" "action" "result";
    padding: 10px;
    border-radius: 22px;
  }
  .voice-card { min-height: 0; }
  .voice-list { max-height: 480px; }
  .range-grid { grid-template-columns: 1fr; }
  #source-text { min-height: 230px; }
}

@media (max-width: 480px) {
  .site-header, .page-shell { width: min(100% - 16px, 460px); }
  .brand-mark { width: 38px; height: 38px; }
  .header-actions { gap: 6px; }
  .service-note { max-width: 88px; line-height: 1.2; text-align: right; }
  .contact-trigger { width: 44px; padding: 0; }
  .contact-trigger svg { width: 20px; }
  .contact-trigger { font-size: 0; }
  .contact-dialog-card { padding: 22px 18px 18px; }
  h1 { font-size: 29px; }
  .limit-note { gap: 18px; }
  .workspace-grid { margin-inline: -2px; }
  .studio-card { padding: 17px; border-radius: 16px; }
  .filter-grid { grid-template-columns: 1fr; }
  .filter-grid > :last-child { grid-column: auto; }
  .editor-meta { align-items: flex-end; }
  .editor-meta span { max-width: 210px; }
  .audio-region { grid-template-columns: 1fr; }
  .download-button { width: 100%; }
  .trust-note { padding-inline: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}