:root {
  --page: #f5f6f8;
  --surface: #ffffff;
  --surface-soft: #f0f2f5;
  --ink: #17181d;
  --muted: #6f7480;
  --faint: #a3a8b2;
  --line: #dfe3e8;
  --line-strong: #cbd1da;
  --accent: #d85f86;
  --accent-deep: #a93660;
  --accent-soft: rgba(216, 95, 134, 0.09);
  --master: #7650a2;
  --master-deep: #593777;
  --master-soft: #f1ebf7;
  --remaster: #9b78b4;
  --remaster-soft: #fbf8fd;
  --good: #16835e;
  --good-soft: rgba(22, 131, 94, 0.1);
  --warning: #a96424;
  --warning-soft: rgba(201, 125, 51, 0.11);
  --bad: #c94452;
  --bad-soft: rgba(201, 68, 82, 0.09);
  --shadow-lg: 0 28px 80px rgba(27, 31, 42, 0.12);
  --shadow-sm: 0 12px 34px rgba(27, 31, 42, 0.08);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.2, 0.9, 0.28, 1.18);
  color: var(--ink);
  background: var(--page);
  font: 16px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  position: relative;
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(245, 246, 248, 0) 390px),
    linear-gradient(122deg, rgba(216, 95, 134, 0.075), rgba(91, 123, 148, 0.055) 55%, transparent),
    var(--page);
}
body::before {
  position: fixed;
  z-index: 0;
  top: -220px;
  left: 50%;
  width: min(760px, 74vw);
  height: 430px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(216, 95, 134, 0.105), transparent 68%);
  content: "";
  pointer-events: none;
  transform: translateX(-18%);
}
button,
input { font: inherit; }
button { border: 0; }
a { color: inherit; }
code {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.06em 0.35em;
  color: var(--accent-deep);
  background: rgba(255, 255, 255, 0.78);
  font: 0.88em/1.4 "Cascadia Code", Consolas, monospace;
}

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

.shell {
  position: relative;
  z-index: 1;
  width: min(1240px, calc(100% - 36px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0 30px;
}

@keyframes page-arrive {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes result-reveal {
  from { opacity: 0; transform: translateY(8px) scale(0.996); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes soft-pop {
  from { opacity: 0; transform: translateY(5px) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.site-header { animation: page-arrive 0.52s var(--ease-out) backwards; }
.page-intro { animation: page-arrive 0.58s var(--ease-out) 0.06s backwards; }
.workspace { animation: page-arrive 0.62s var(--ease-out) 0.12s backwards; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  min-height: 50px;
  margin-bottom: 62px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.25), transparent 34%),
    linear-gradient(145deg, #252936, var(--accent));
  box-shadow: 0 16px 36px rgba(168, 54, 96, 0.2);
  font-size: 0.8rem;
  font-weight: 850;
  transition: transform 0.28s var(--ease-spring), box-shadow 0.28s ease;
}
.brand:hover .brand-mark {
  box-shadow: 0 19px 40px rgba(168, 54, 96, 0.25);
  transform: translateY(-2px) rotate(-3deg);
}
.brand-copy strong,
.brand-copy small { display: block; }
.brand-copy strong {
  font-size: 1.08rem;
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.025em;
}
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: 0.72rem; }
.badge,
.micro-status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.82);
  font-size: 0.74rem;
  font-weight: 750;
  white-space: nowrap;
}

.page-intro { margin-bottom: 30px; }
.eyebrow,
.panel-kicker,
.card-kicker {
  margin: 0;
  color: var(--accent-deep);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.05em;
}
.page-intro > .eyebrow { margin-bottom: 10px; }
.intro-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.72fr);
  align-items: end;
  gap: clamp(46px, 9vw, 120px);
}
.intro-row h1 {
  margin: 0;
  font-size: clamp(3.15rem, 5.3vw, 4.75rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}
.intro-row h1 span { display: block; width: fit-content; white-space: nowrap; }
.intro-row h1 span:last-child { color: var(--accent-deep); }
.intro-row p {
  max-width: 410px;
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.9;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 18px;
  align-items: start;
}
.upload-panel,
.result-panel {
  min-width: 0;
  border: 1px solid rgba(223, 227, 232, 0.96);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.93);
}
.result-panel {
  grid-column: 1;
  grid-row: 1;
  min-height: 650px;
  box-shadow: var(--shadow-lg);
}
.upload-panel {
  position: sticky;
  top: 18px;
  grid-column: 2;
  grid-row: 1;
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 15px;
}
.panel-heading > div { min-width: 0; }
.panel-heading h2 { margin: 1px 0 0; font-size: 1.02rem; line-height: 1.2; }
.panel-heading p { margin: 0; color: var(--muted); font-size: 0.7rem; white-space: nowrap; }
.drop-zone {
  display: flex;
  min-height: 174px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  color: var(--ink);
  background: rgba(248, 249, 250, 0.72);
  text-align: center;
  cursor: pointer;
  transition: transform 0.22s var(--ease-out), border-color 0.18s ease,
    background 0.18s ease, box-shadow 0.22s ease;
}
.drop-zone:hover,
.drop-zone.is-dragging,
.drop-zone:focus-within {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 14px 28px rgba(168, 54, 96, 0.08);
}
.drop-zone.is-busy { opacity: 0.6; cursor: progress; pointer-events: none; transform: none; }
.drop-zone input { position: absolute; overflow: hidden; width: 1px; height: 1px; opacity: 0; }
.upload-glyph {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  margin-bottom: 13px;
  border: 1px solid rgba(216, 95, 134, 0.22);
  border-radius: 50%;
  color: var(--accent-deep);
  background: var(--accent-soft);
  transition: transform 0.25s var(--ease-spring), background 0.18s ease;
}
.drop-zone:hover .upload-glyph,
.drop-zone.is-dragging .upload-glyph,
.drop-zone:focus-within .upload-glyph { transform: translateY(-3px); background: rgba(216, 95, 134, 0.14); }
.upload-glyph svg {
  width: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.drop-zone strong { max-width: 100%; overflow: hidden; text-overflow: ellipsis; font-size: 0.92rem; }
.drop-zone > span:last-child { margin-top: 6px; color: var(--muted); font-size: 0.74rem; }
.inspection-loading { margin: 13px 2px 0; color: var(--muted); font-size: 0.78rem; }
.inline-spinner,
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-top-color: currentColor;
  border-radius: 50%;
  vertical-align: -2px;
  animation: spin 0.72s linear infinite;
}
.inline-spinner { margin-right: 5px; border-color: var(--line-strong); border-top-color: var(--accent-deep); }
@keyframes spin { to { transform: rotate(360deg); } }
.error-state {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 13px;
  border: 1px solid rgba(201, 68, 82, 0.26);
  border-radius: 9px;
  padding: 11px;
  color: var(--bad);
  background: var(--bad-soft);
}
.error-state > span {
  display: grid;
  flex: 0 0 auto;
  width: 23px;
  height: 23px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--bad);
  font-weight: 850;
}
.error-state strong { font-size: 0.84rem; }
.error-state p { margin: 3px 0 0; color: #7e4b51; font-size: 0.76rem; }
.inspection-panel {
  margin-top: 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px;
  background: rgba(248, 249, 250, 0.72);
}
.inspection-panel:not([hidden]),
.error-state:not([hidden]) { animation: soft-pop 0.32s var(--ease-out) backwards; }
.metadata-head {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
}
.metadata-cover {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(145deg, #252936, var(--accent));
  font-size: 0.72rem;
  font-weight: 850;
}
.metadata-head div { min-width: 0; }
.metadata-head strong,
.metadata-head small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.metadata-head strong { font-size: 0.82rem; }
.metadata-head small { margin-top: 2px; color: var(--muted); font-size: 0.68rem; }
.metadata-bpm { color: var(--accent-deep); font-size: 0.68rem; font-weight: 800; }
.mask-note {
  margin: 10px 0 12px;
  border-left: 3px solid rgba(216, 95, 134, 0.45);
  padding: 7px 9px;
  color: var(--muted);
  background: var(--accent-soft);
  font-size: 0.67rem;
}
.slot-picker { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 0; border: 0; margin: 0; }
.slot-picker legend { grid-column: 1 / -1; width: 100%; margin-bottom: 7px; color: var(--muted); font-size: 0.7rem; }
.slot-picker label { min-width: 0; cursor: pointer; }
.slot-picker input { position: absolute; opacity: 0; pointer-events: none; }
.slot-picker label > span {
  display: block;
  min-height: 66px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: var(--surface);
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s var(--ease-out),
    box-shadow 0.18s ease;
}
.slot-picker label:hover > span { border-color: var(--line-strong); transform: translateY(-1px); }
.slot-picker input[value="5"] + span { border-color: rgba(118, 80, 162, 0.32); background: var(--master-soft); }
.slot-picker input[value="5"]:checked + span {
  border-color: var(--master-deep);
  color: #fff;
  background: linear-gradient(145deg, var(--master-deep), var(--master));
  box-shadow: 0 8px 18px rgba(89, 55, 119, 0.18);
}
.slot-picker input[value="5"]:checked + span b { color: #fff; }
.slot-picker input[value="5"]:checked + span small { color: rgba(255, 255, 255, 0.76); }
.slot-picker input[value="6"] + span {
  border-color: rgba(118, 80, 162, 0.46);
  background: linear-gradient(135deg, #fff 0 77%, #eee5f5 77% 100%);
  box-shadow: inset 0 -3px 0 rgba(155, 120, 180, 0.54);
}
.slot-picker input[value="6"]:checked + span {
  border-color: var(--master);
  background: linear-gradient(135deg, #fff 0 72%, #e5d8ef 72% 100%);
  box-shadow: inset 0 -4px 0 var(--master), 0 8px 18px rgba(89, 55, 119, 0.12);
}
.slot-picker input:focus-visible + span { outline: 3px solid rgba(118, 80, 162, 0.26); outline-offset: 2px; }
.slot-picker input:disabled + span { opacity: 0.48; cursor: not-allowed; }
.slot-picker b,
.slot-picker small { display: block; }
.slot-picker b { color: var(--master-deep); font-size: 0.72rem; }
.slot-picker small { margin-top: 4px; color: var(--muted); font-size: 0.64rem; line-height: 1.35; }
.other-slots { margin-top: 9px; color: var(--muted); font-size: 0.66rem; }
.primary-button {
  position: relative;
  overflow: hidden;
  display: flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  margin-top: 13px;
  border-radius: 8px;
  padding: 0 15px;
  color: #fff;
  background: var(--accent);
  font-weight: 850;
  text-align: left;
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), background 0.18s ease, box-shadow 0.2s ease;
}
.primary-button::before {
  position: absolute;
  top: -60%;
  bottom: -60%;
  left: -28%;
  width: 22%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.32), transparent);
  content: "";
  pointer-events: none;
  transform: skewX(-18deg) translateX(-180%);
  transition: transform 0.58s var(--ease-out);
}
.primary-button > * { position: relative; z-index: 1; }
.primary-button:disabled { color: rgba(255, 255, 255, 0.92); background: #e9adc1; cursor: not-allowed; }
.primary-button:not(:disabled):hover {
  background: var(--accent-deep);
  box-shadow: 0 13px 27px rgba(168, 54, 96, 0.23);
  transform: translateY(-1px);
}
.primary-button:not(:disabled):hover::before { transform: skewX(-18deg) translateX(760%); }
.primary-button:not(:disabled):active { box-shadow: none; transform: translateY(1px) scale(0.995); }
.button-arrow { transition: transform 0.22s var(--ease-spring); }
.primary-button:not(:disabled):hover .button-arrow { transform: translateX(3px); }
.primary-button .spinner { display: none; }
.primary-button.is-loading .button-arrow { display: none; }
.primary-button.is-loading .spinner { display: inline-block; }
.privacy-note { margin: 9px 0 0; color: var(--muted); font-size: 0.65rem; text-align: center; }
.privacy-note span { color: var(--good); font-size: 0.55rem; }
.upload-compact { display: none; align-items: center; justify-content: space-between; gap: 12px; }
.upload-compact > div { min-width: 0; }
.upload-compact strong,
.upload-compact small { display: block; }
.upload-compact strong { overflow: hidden; margin-top: 3px; text-overflow: ellipsis; white-space: nowrap; font-size: 0.86rem; }
.upload-compact small { margin-top: 2px; color: var(--muted); font-size: 0.7rem; }
.ghost-button,
.secondary-button,
.tertiary-button {
  min-height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0 14px;
  color: var(--ink);
  background: var(--surface);
  font-weight: 750;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease,
    transform 0.18s var(--ease-out), box-shadow 0.18s ease;
}
.ghost-button:active,
.secondary-button:active,
.tertiary-button:active { transform: translateY(1px) scale(0.985); }

.empty-state {
  display: grid;
  min-height: 648px;
  grid-template-columns: 230px minmax(0, 1fr);
  align-items: center;
  gap: 50px;
  padding: 70px;
}
.empty-visual {
  display: grid;
  width: 190px;
  height: 220px;
  place-items: center;
  border: 1px solid rgba(216, 95, 134, 0.34);
  border-radius: 20px;
  color: var(--accent-deep);
  background: linear-gradient(145deg, #fff, rgba(216, 95, 134, 0.06));
  box-shadow: 0 34px 70px rgba(168, 54, 96, 0.15);
  transform: rotate(-2deg);
  transition: transform 0.36s var(--ease-spring), box-shadow 0.36s ease;
}
.empty-state:hover .empty-visual {
  box-shadow: 0 39px 78px rgba(168, 54, 96, 0.18);
  transform: translateY(-3px) rotate(-1deg);
}
.empty-visual strong { align-self: end; font-size: 5.8rem; font-weight: 800; line-height: 1; }
.empty-visual span { align-self: start; margin-top: 16px; color: var(--muted); font-size: 0.72rem; font-weight: 750; }
.empty-copy h2 { max-width: 480px; margin: 0 0 12px; font-size: 2.55rem; line-height: 1.08; letter-spacing: -0.045em; }
.empty-copy > p { max-width: 490px; margin: 0; color: var(--muted); line-height: 1.8; }
.answer-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 21px; }
.answer-chips span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 11px;
  color: var(--muted);
  background: #fff;
  font-size: 0.7rem;
}
.empty-copy .scope-note { margin-top: 20px; color: var(--faint); font-size: 0.7rem; }

.result-content { padding: 18px; }
.result-content:not([hidden]) { animation: result-reveal 0.42s var(--ease-out) backwards; }
.result-tabs { display: flex; gap: 7px; margin-bottom: 16px; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.result-tab {
  min-width: 92px;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0 12px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.72rem;
  font-weight: 800;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease,
    transform 0.18s var(--ease-out), box-shadow 0.18s ease;
}
.result-tab:hover { transform: translateY(-1px); }
.result-tab.is-master {
  border-color: rgba(118, 80, 162, 0.38);
  color: var(--master-deep);
  background: var(--master-soft);
}
.result-tab.is-master[aria-selected="true"] {
  border-color: var(--master-deep);
  color: #fff;
  background: linear-gradient(145deg, var(--master-deep), var(--master));
  box-shadow: 0 9px 22px rgba(89, 55, 119, 0.23);
}
.result-tab.is-remaster {
  border-color: rgba(118, 80, 162, 0.5);
  color: var(--master-deep);
  background: linear-gradient(135deg, #fff 0 78%, #eee5f5 78% 100%);
  box-shadow: inset 0 -3px 0 rgba(155, 120, 180, 0.52);
}
.result-tab.is-remaster[aria-selected="true"] {
  border-color: var(--master);
  color: var(--master-deep);
  background: linear-gradient(135deg, #fff 0 72%, #e6daef 72% 100%);
  box-shadow: inset 0 -4px 0 var(--master), 0 9px 22px rgba(89, 55, 119, 0.16);
}
.result-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding: 0 2px 16px;
}
.result-header h2 { margin: 5px 0 0; font-size: 1.9rem; line-height: 1.15; letter-spacing: -0.04em; }
.result-meta { margin: 8px 0 0; color: var(--muted); font-size: 0.72rem; }
.status-row { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.badge { min-height: 30px; padding: 0 11px; }
.badge.is-master {
  border-color: var(--master-deep);
  color: #fff;
  background: linear-gradient(145deg, var(--master-deep), var(--master));
}
.badge.is-remaster {
  border-color: var(--master);
  color: var(--master-deep);
  background: linear-gradient(135deg, #fff 0 72%, #e6daef 72% 100%);
  box-shadow: inset 0 -3px 0 var(--master);
}

.constant-card {
  margin-top: 16px;
  border: 1px solid rgba(216, 95, 134, 0.24);
  border-radius: 11px;
  padding: 16px;
  background: linear-gradient(145deg, rgba(216, 95, 134, 0.075), rgba(255, 255, 255, 0.95) 58%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}
.section-heading,
.evidence-heading,
.style-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.section-heading { margin-bottom: 13px; }
.section-heading > div { min-width: 0; }
.section-heading h3 { margin: 2px 0 0; font-size: 1.02rem; }
.section-heading p { margin: 0; color: var(--muted); font-size: 0.68rem; }
.constant-main { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 14px; }
.constant-primary {
  display: flex;
  min-height: 170px;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 10px;
  padding: 21px;
  color: #fff;
  background: linear-gradient(145deg, #2a2830, var(--accent-deep));
}
.constant-primary > span { color: rgba(255, 255, 255, 0.72); font-size: 0.72rem; font-weight: 750; }
.constant-value-row { display: flex; align-items: flex-end; gap: 10px; }
.constant-value-row strong { font-size: 4.3rem; line-height: 0.9; letter-spacing: -0.06em; }
.constant-value-row span { padding-bottom: 7px; color: rgba(255, 255, 255, 0.75); font-size: 0.7rem; }
.constant-support {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
}
.result-notice { margin: 10px 0 0; border-radius: 7px; padding: 9px 11px; color: var(--muted); background: var(--surface-soft); font-size: 0.7rem; }
.result-notice.is-warning { color: #85501d; background: var(--warning-soft); }
.comparison-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.comparison-grid article { min-width: 0; border: 1px solid var(--line); border-radius: 9px; padding: 13px; background: rgba(255, 255, 255, 0.9); }
.comparison-grid span,
.comparison-grid strong,
.comparison-grid small { display: block; }
.comparison-grid span { color: var(--muted); font-size: 0.66rem; }
.comparison-grid strong { margin-top: 7px; color: var(--accent-deep); font-size: 1.45rem; line-height: 1; }
.comparison-grid small { margin-top: 6px; color: var(--muted); font-size: 0.62rem; line-height: 1.35; }

.comment-card,
.similarity-section,
.evidence-section,
.style-section,
.provenance { border: 1px solid var(--line); border-radius: 10px; }
.comment-card { margin-top: 12px; }
.comment-card { padding: 18px; background: linear-gradient(125deg, rgba(216, 95, 134, 0.065), rgba(255, 255, 255, 0.96) 72%); }
.comment-card header { display: flex; align-items: center; gap: 10px; }
.review-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(145deg, #2a2830, var(--accent));
  font-size: 0.75rem;
  font-weight: 850;
}
.comment-card h3,
.evidence-heading h3,
.style-heading h3 { margin: 2px 0 0; font-size: 1rem; }
.review-content { margin-top: 17px; }
.review-summary {
  max-width: 920px;
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 720;
  line-height: 1.85;
  letter-spacing: 0.005em;
}
.review-observations {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 15px 0 0;
  padding: 0;
  list-style: none;
}
.review-observations[hidden] { display: none; }
.review-observation {
  position: relative;
  min-width: 0;
  border-top: 1px solid var(--line);
  padding: 12px 12px 11px 15px;
  background: rgba(255, 255, 255, 0.58);
}
.review-observation::before {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 0;
  width: 3px;
  border-radius: 99px;
  background: linear-gradient(180deg, var(--accent), rgba(216, 95, 134, 0.18));
  content: "";
}
.review-observation time {
  display: block;
  color: var(--accent-deep);
  font-family: Inter, "Microsoft YaHei", sans-serif;
  font-size: 0.66rem;
  font-weight: 850;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}
.review-observation p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.65;
}
.review-recommendation {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin: 14px 0 0;
  border-top: 1px solid rgba(216, 95, 134, 0.16);
  padding-top: 12px;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.65;
}
.review-recommendation[hidden] { display: none; }
.review-recommendation-label {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 2px 7px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  font-size: 0.6rem;
  font-weight: 850;
  line-height: 1.55;
}
.similarity-section {
  margin-top: 12px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.9);
}
.similarity-heading,
.similarity-context {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.similarity-heading h3 { margin: 2px 0 0; font-size: 1rem; }
.similarity-context .scope-copy { margin-top: 9px; }
.similarity-coverage {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 5px 9px;
  color: var(--master-deep);
  background: var(--master-soft);
  font-size: 0.64rem;
  font-weight: 800;
  cursor: help;
}
.similarity-notice {
  margin: 12px 0 0;
  border-radius: 7px;
  padding: 9px 11px;
  color: #85501d;
  background: var(--warning-soft);
  font-size: 0.68rem;
  line-height: 1.55;
}
.similarity-list { padding: 0; margin: 13px 0 0; list-style: none; }
.similar-chart { border-top: 1px solid var(--line); }
.similar-chart:last-child { border-bottom: 1px solid var(--line); }
.similar-chart details { overflow: hidden; }
.similar-chart summary {
  position: relative;
  display: grid;
  min-height: 80px;
  grid-template-columns: 38px minmax(0, 1fr) 124px 18px;
  align-items: center;
  gap: 12px;
  padding: 12px 2px;
  cursor: pointer;
  list-style: none;
  transition: background 0.18s ease;
}
.similar-chart summary:hover { background: linear-gradient(90deg, transparent, var(--accent-soft), transparent); }
.similar-chart summary::-webkit-details-marker { display: none; }
.similar-rank-badge {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(118, 80, 162, 0.22);
  border-radius: 8px;
  color: var(--master-deep);
  background: var(--master-soft);
  font-size: 0.68rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}
.similar-identity,
.similar-title-row,
.similar-meta,
.similar-score,
.similar-score > span,
.local-pattern-metric > span { display: flex; }
.similar-identity { min-width: 0; flex-direction: column; gap: 7px; }
.similar-title-row { min-width: 0; align-items: center; flex-wrap: wrap; gap: 8px; }
.similar-title { min-width: 0; overflow-wrap: anywhere; font-size: 0.88rem; line-height: 1.35; }
.similar-difficulty {
  min-height: 22px;
  border: 1px solid var(--master);
  border-radius: 999px;
  padding: 0 7px;
  font-size: 0.58rem;
  font-weight: 900;
  line-height: 20px;
  white-space: nowrap;
}
.similar-difficulty.is-master { color: #fff; background: var(--master); }
.similar-difficulty.is-remaster {
  color: var(--master-deep);
  background: linear-gradient(135deg, #fff 0 72%, #e6daef 72% 100%);
  box-shadow: inset 0 -2px 0 var(--master);
}
.similar-meta { flex-wrap: wrap; gap: 4px 13px; color: var(--muted); font-size: 0.64rem; line-height: 1.45; }
.similar-meta span + span::before { margin-right: 13px; color: var(--line-strong); content: "·"; }
.similar-meta small { color: var(--faint); font-size: inherit; }
.similar-score { min-width: 0; flex-direction: column; align-items: flex-end; }
.similar-score > span:first-child { color: var(--muted); font-size: 0.58rem; }
.similar-score > span:nth-child(2) { align-items: baseline; gap: 3px; }
.similar-score strong { color: var(--accent-deep); font-size: 1.42rem; font-variant-numeric: tabular-nums; line-height: 1.1; }
.similar-score small { color: var(--faint); font-size: 0.58rem; }
.similar-score progress,
.local-pattern-metric progress {
  overflow: hidden;
  width: 100%;
  height: 5px;
  margin-top: 7px;
  border: 0;
  border-radius: 999px;
  appearance: none;
  background: var(--surface-soft);
}
.similar-score progress::-webkit-progress-bar,
.local-pattern-metric progress::-webkit-progress-bar { border-radius: 999px; background: var(--surface-soft); }
.similar-score progress::-webkit-progress-value,
.local-pattern-metric progress::-webkit-progress-value { border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--master)); }
.similar-score progress::-moz-progress-bar,
.local-pattern-metric progress::-moz-progress-bar { border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--master)); }
.similar-chevron {
  width: 18px;
  height: 18px;
  color: var(--muted);
  font-size: 1rem;
  text-align: center;
  transition: color 0.18s ease, transform 0.25s var(--ease-spring);
}
.similar-chevron::before { content: "+"; }
.similar-chart details[open] .similar-chevron { color: var(--accent-deep); transform: rotate(45deg); }
.similar-detail {
  display: grid;
  grid-template-columns: minmax(240px, 0.82fr) minmax(0, 1.18fr);
  gap: 20px;
  border-top: 1px dashed var(--line);
  padding: 17px 4px 20px 52px;
}
.similar-radar-panel {
  min-width: 0;
  border-radius: 9px;
  padding: 12px;
  background: var(--surface-soft);
}
.similar-detail-heading {
  display: block;
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 850;
}
.similar-radar { display: block; width: 100%; max-width: 290px; height: auto; margin: 4px auto 0; overflow: visible; }
.radar-grid { fill: rgba(255, 255, 255, 0.42); stroke: rgba(118, 80, 162, 0.14); stroke-width: 1; }
.radar-axis { stroke: rgba(118, 80, 162, 0.13); stroke-width: 1; }
.radar-area { fill: rgba(216, 95, 134, 0.2); stroke: var(--master); stroke-width: 2; }
.radar-point { fill: var(--accent-deep); stroke: #fff; stroke-width: 1.5; }
.radar-label { fill: var(--muted); font-family: Inter, "Microsoft YaHei", sans-serif; font-size: 9px; font-weight: 750; }
.similar-reading { min-width: 0; }
.local-pattern-metric {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 7px 16px;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 12px;
  background: #fff;
}
.local-pattern-metric > span { min-width: 0; flex-direction: column; }
.local-pattern-metric span > span { font-size: 0.7rem; font-weight: 800; }
.local-pattern-metric small { margin-top: 3px; color: var(--faint); font-size: 0.59rem; }
.local-pattern-metric strong { color: var(--master-deep); font-size: 0.84rem; font-variant-numeric: tabular-nums; }
.local-pattern-metric progress { grid-column: 1 / -1; margin-top: 1px; }
.similar-reading > .similar-detail-heading { margin-top: 15px; }
.similar-explanations { margin-top: 8px; }
.similar-explanation {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  align-items: start;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding: 9px 0;
}
.similar-explanation > span {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 6px;
  color: var(--good);
  background: var(--good-soft);
  font-size: 0.58rem;
  font-weight: 900;
}
.similar-explanation.is-difference > span { color: var(--warning); background: var(--warning-soft); }
.similar-explanation p { margin: 2px 0 0; color: var(--muted); font-size: 0.68rem; line-height: 1.55; }
.evidence-section { padding: 18px; background: rgba(255, 255, 255, 0.82); }
.evidence-heading small { color: var(--muted); font-size: 0.66rem; }
.insight-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(280px, 0.72fr);
  gap: 12px;
  margin-top: 12px;
}
.style-section { min-width: 0; padding: 18px; background: #fff; }
.technique-summary { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.technique-summary span { border: 1px solid rgba(216, 95, 134, 0.22); border-radius: 999px; padding: 5px 9px; color: var(--accent-deep); background: var(--accent-soft); font-size: 0.68rem; }
.technique-summary b { margin-left: 3px; }
.evidence-list { padding: 0; margin: 11px 0 0; list-style: none; }
.evidence-list li { border-top: 1px solid var(--line); padding: 13px 0 3px; }
.evidence-line { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.evidence-line b { font-size: 0.78rem; }
.evidence-line span { color: var(--accent-deep); font-size: 0.7rem; font-weight: 750; }
.evidence-list p,
.evidence-empty { margin: 6px 0 0; color: var(--muted); font-size: 0.7rem; }
.evidence-empty { border-top: 1px solid var(--line); padding-top: 13px; }
.candidate-warning { margin: 13px 0 0; border-radius: 7px; padding: 8px 10px; color: var(--muted); background: var(--surface-soft); font-size: 0.66rem; }

.provenance {
  overflow: hidden;
  margin-top: 12px;
  background: rgba(255, 255, 255, 0.72);
}
.provenance > summary {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
  transition: color 0.18s ease, background 0.18s ease;
}
.provenance > summary:hover { color: var(--accent-deep); background: var(--accent-soft); }
.provenance > summary::-webkit-details-marker { display: none; }
.provenance > summary::after {
  color: var(--muted);
  content: "+";
  font-size: 1.1rem;
  transition: color 0.18s ease, transform 0.25s var(--ease-spring);
}
.provenance[open] > summary::after { color: var(--accent-deep); transform: rotate(45deg); }
.micro-status { min-height: 26px; padding: 0 9px; font-size: 0.64rem; }
.micro-status.is-warning { border-color: rgba(169, 100, 36, 0.25); color: var(--warning); background: var(--warning-soft); }
.scope-copy,
.card-footnote { color: var(--muted); font-size: 0.67rem; line-height: 1.55; }
.scope-copy { margin: 13px 0 0; }
.card-footnote { margin: 13px 0 0; color: var(--faint); }
.style-list { padding: 0; margin: 12px 0 0; list-style: none; }
.style-list li { border-top: 1px solid var(--line); padding: 11px 0; }
.style-row { display: grid; grid-template-columns: 26px minmax(0, 1fr) 46px; align-items: center; gap: 8px; }
.style-rank { color: var(--faint); font-size: 0.66rem; font-weight: 800; }
.style-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.8rem; font-weight: 800; }
.style-score { color: var(--master-deep); font-size: 0.68rem; font-variant-numeric: tabular-nums; font-weight: 850; text-align: right; }
.style-meter {
  display: block;
  overflow: hidden;
  width: calc(100% - 34px);
  height: 6px;
  margin: 8px 0 0 34px;
  border: 0;
  border-radius: 999px;
  appearance: none;
  background: var(--surface-soft);
}
.style-meter::-webkit-progress-bar { border-radius: 999px; background: var(--surface-soft); }
.style-meter::-webkit-progress-value { border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--master)); }
.style-meter::-moz-progress-bar { border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--master)); }
.provenance dl { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 18px; margin: 0; border-top: 1px solid var(--line); padding: 14px 16px; }
.provenance dt { color: var(--muted); font-size: 0.64rem; }
.provenance dd { margin: 2px 0 0; overflow-wrap: anywhere; font-size: 0.68rem; font-weight: 700; }

.result-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
.secondary-button { background: #fff; }
.tertiary-button { border-color: transparent; color: var(--muted); background: transparent; }
.secondary-button:hover,
.ghost-button:hover,
.tertiary-button:hover { border-color: rgba(216, 95, 134, 0.25); color: var(--accent-deep); background: var(--accent-soft); }
#action-feedback { min-height: 1em; color: var(--good); font-size: 0.7rem; }
button:focus-visible,
a:focus-visible,
summary:focus-visible { outline: 3px solid rgba(216, 95, 134, 0.3); outline-offset: 2px; }

.source-line {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 13px;
  padding: 0 0 4px;
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.6;
}
.source-item { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.source-role { color: var(--muted); }
.source-item a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent-deep);
  font-weight: 750;
  text-decoration: none;
  text-underline-offset: 3px;
  transition: color 0.18s ease;
}
.source-item a:hover { color: var(--ink); text-decoration: underline; }
.source-site-icon {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  border-radius: 3px;
  object-fit: cover;
}

.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 22px; border-top: 1px solid var(--line); padding-top: 18px; }
.site-footer div { display: flex; align-items: baseline; gap: 10px; }
.site-footer strong { font-size: 0.9rem; }
.site-footer span,
.site-footer p { color: var(--muted); font-size: 0.68rem; }
.site-footer p { margin: 0; text-align: right; }
.site-footer a { text-decoration: underline; text-underline-offset: 2px; }
.noscript { margin: 20px; color: var(--bad); text-align: center; }

@media (max-width: 980px) {
  .intro-row { grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.8fr); gap: 32px; }
  .workspace { grid-template-columns: minmax(0, 1fr) 320px; }
  .empty-state { gap: 28px; padding: 48px; }
  .empty-copy h2 { font-size: 2.1rem; }
  .constant-main { grid-template-columns: 170px minmax(0, 1fr); }
  .similar-detail { grid-template-columns: 1fr; }
  .insight-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 20px, 620px); padding-top: 14px; }
  .site-header { margin-bottom: 38px; }
  .page-intro { margin-bottom: 22px; }
  .intro-row { grid-template-columns: 1fr; gap: 16px; }
  .intro-row h1 { font-size: clamp(2.55rem, 12vw, 3.3rem); line-height: 0.96; }
  .intro-row p { max-width: 560px; font-size: 0.84rem; line-height: 1.75; }
  .workspace { grid-template-columns: 1fr; }
  .upload-panel,
  .result-panel,
  .workspace.has-result .upload-panel,
  .workspace.has-result .result-panel { position: static; grid-column: 1; }
  .upload-panel { grid-row: 1; padding: 16px; }
  .result-panel { grid-row: 2; min-height: 0; }
  .workspace.has-result .result-panel { grid-row: 1; }
  .workspace.has-result .upload-panel { grid-row: 2; }
  .workspace.has-result:not(.editing) .upload-expanded { display: none; }
  .workspace.has-result:not(.editing) .upload-compact { display: flex !important; }
  .workspace.has-result.editing .upload-compact { display: none !important; }
  .empty-state { min-height: 390px; grid-template-columns: 120px minmax(0, 1fr); gap: 25px; padding: 28px; }
  .empty-visual { width: 105px; height: 135px; border-radius: 14px; }
  .empty-visual strong { font-size: 3.7rem; }
  .empty-visual span { margin-top: 8px; font-size: 0.62rem; }
  .empty-copy h2 { font-size: 1.65rem; }
  .empty-copy > p { font-size: 0.76rem; }
  .answer-chips { margin-top: 14px; }
  .result-content { padding: 15px; }
  .result-header { align-items: flex-start; }
  .constant-main { grid-template-columns: 1fr; }
  .constant-primary { min-height: 150px; }
  .comparison-grid { grid-template-columns: repeat(3, 1fr); }
  .review-summary { font-size: 0.92rem; line-height: 1.8; }
  .similar-detail { padding-left: 52px; }
  .site-footer { align-items: flex-start; flex-direction: column; gap: 6px; }
  .site-footer p { text-align: left; }
}

@media (max-width: 460px) {
  .brand-mark { width: 40px; height: 40px; }
  .brand-copy strong { font-size: 1rem; }
  .intro-row h1 { font-size: clamp(2.35rem, 11.5vw, 2.75rem); }
  .panel-heading { align-items: flex-start; }
  .drop-zone { min-height: 170px; }
  .slot-picker { grid-template-columns: 1fr; }
  .empty-state { min-height: 0; grid-template-columns: 1fr; padding: 22px; }
  .empty-visual { display: none; }
  .empty-copy h2 { font-size: 1.6rem; }
  .result-tabs { display: grid; grid-template-columns: 1fr 1fr; }
  .result-tab { min-width: 0; }
  .result-header { flex-direction: column; }
  .result-header h2 { font-size: 1.55rem; }
  .status-row { justify-content: flex-start; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 7px; }
  .constant-primary { min-height: 154px; }
  .comparison-grid { grid-template-columns: 1fr 1fr; }
  .comparison-grid article:last-child { grid-column: 1 / -1; }
  .comment-card,
  .similarity-section,
  .evidence-section,
  .style-section { padding: 15px; }
  .review-observations { grid-template-columns: 1fr; }
  .similarity-heading,
  .similarity-context { align-items: flex-start; flex-direction: column; gap: 6px; }
  .similarity-context .scope-copy { margin-top: 0; }
  .similar-chart summary { grid-template-columns: 32px minmax(0, 1fr) 76px; gap: 8px; padding-right: 18px; }
  .similar-score > span:first-child { font-size: 0.54rem; text-align: right; }
  .similar-score strong { font-size: 1.15rem; }
  .similar-chevron { position: absolute; top: 50%; right: -2px; transform: translateY(-50%); }
  .similar-chart details[open] .similar-chevron { transform: translateY(-50%) rotate(45deg); }
  .similar-detail { gap: 14px; padding: 14px 0 18px; }
  .similar-meta { gap: 3px 8px; }
  .similar-meta span + span::before { margin-right: 8px; }
  .evidence-heading,
  .style-heading { align-items: flex-start; flex-direction: column; gap: 5px; }
  .result-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .result-actions .secondary-button { width: 100%; }
  .result-actions .tertiary-button { grid-column: 1 / -1; width: 100%; }
  #action-feedback { grid-column: 1 / -1; }
  .source-line { align-items: center; gap: 6px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}