:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --ink: #172033;
  --muted: #667085;
  --line: #d9e0ea;
  --blue: #2563eb;
  --teal: #0d9488;
  --red: #dc2626;
  --amber: #d97706;
  --green: #16a34a;
  --shadow: 0 18px 44px rgba(23, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

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

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 260px;
  padding: 24px 18px;
  color: #dbeafe;
  background: #111827;
  overflow-y: auto;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 34px;
}

.brand-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 900;
}

.brand b,
.brand small {
  display: block;
}

.brand b {
  color: #fff;
  font-size: 14px;
}

.brand small {
  margin-top: 4px;
  color: #93a4bd;
  line-height: 1.35;
}

.sidebar nav {
  display: grid;
  gap: 8px;
}

.sidebar nav a,
.mode-pill {
  padding: 12px 14px;
  border-radius: 8px;
}

.sidebar nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.mode-pill {
  margin-top: 28px;
  color: #bbf7d0;
  background: rgba(22, 163, 74, 0.14);
  font-size: 13px;
  font-weight: 800;
}

.app {
  margin-left: 260px;
  padding: 28px clamp(18px, 3vw, 38px) 60px;
}

.page-section {
  margin-bottom: 34px;
}

.page-title,
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.page-title {
  align-items: flex-start;
  flex-direction: column;
}

.page-title p,
.section-head p {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
  font-size: clamp(30px, 4vw, 46px);
}

h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
}

h3 {
  margin-bottom: 12px;
}

.page-title span,
.panel p,
.panel small,
.stat-grid small,
.muted {
  color: var(--muted);
}

.stat-grid,
.evaluation-grid,
.result-grid,
.method-grid,
.field-grid,
.rubric-grid,
.meta-grid {
  display: grid;
  gap: 14px;
}

.stat-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-grid article,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.stat-grid article {
  padding: 20px;
}

.stat-grid span,
.score-card span,
label span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.stat-grid strong {
  display: block;
  margin: 12px 0 6px;
  font-size: 32px;
}

.dataset-source {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.comparison-overview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.comparison-overview .panel {
  padding: 20px;
}

.comparison-overview span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.comparison-overview strong {
  display: block;
  margin-top: 10px;
  font-size: 34px;
}

.model-bars-panel {
  margin-bottom: 14px;
}

.model-dimension-bars {
  display: grid;
  gap: 12px;
}

.model-dim-row {
  display: grid;
  grid-template-columns: 86px 1fr 1fr;
  gap: 12px;
  align-items: center;
}

.model-dim-row > span {
  color: var(--ink);
  font-size: 13px;
  font-weight: 900;
}

.model-dim-bar {
  display: grid;
  grid-template-columns: 94px 1fr 34px;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.model-dim-bar i {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edf5;
}

.model-dim-bar em {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}

.model-dim-bar.kling em {
  background: var(--teal);
}

.comparison-pair-list {
  display: grid;
  gap: 14px;
}

.pair-card {
  padding: 0;
  overflow: hidden;
}

.pair-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: #f8fafc;
}

.pair-head h3 {
  margin-bottom: 8px;
}

.pair-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.winner-pill {
  align-self: flex-start;
  white-space: nowrap;
  padding: 8px 10px;
  color: var(--blue);
  border-radius: 8px;
  background: #eef2ff;
  font-size: 12px;
  font-weight: 900;
}

.pair-videos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
}

.model-video-card {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.model-video-card + .model-video-card {
  border-left: 1px solid var(--line);
}

.model-video-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.model-video-card h4 {
  margin: 0;
  font-size: 18px;
}

.model-video-card strong {
  font-size: 24px;
}

.model-video-card video {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: 8px;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.score-grid span {
  padding: 8px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  font-size: 12px;
}

.score-grid b {
  display: block;
  margin-top: 3px;
  color: var(--ink);
}

.reason-text {
  color: var(--muted);
  line-height: 1.7;
}

.evaluation-grid {
  grid-template-columns: minmax(360px, 0.95fr) minmax(360px, 1.05fr);
}

.panel {
  padding: 20px;
}

.input-panel {
  display: grid;
  gap: 16px;
}

.file-drop {
  display: grid;
  gap: 8px;
  padding: 22px;
  border: 1px dashed #aab6c8;
  border-radius: 8px;
  background: #f8fafc;
}

.file-drop input {
  margin-bottom: 4px;
}

.field-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 8px;
}

input,
textarea,
select {
  width: 100%;
  min-height: 40px;
  padding: 10px 12px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

textarea {
  resize: vertical;
  line-height: 1.5;
}

.primary-button,
.ghost-button {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 8px;
  font-weight: 900;
}

.primary-button {
  color: #fff;
  border: 0;
  background: var(--blue);
}

.ghost-button {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #fff;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.video-shell {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  border-radius: 8px;
  background: #0f172a;
}

video {
  display: block;
  width: 100%;
  max-height: 420px;
  background: #0f172a;
}

.empty-video {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #cbd5e1;
  font-weight: 900;
}

.meta-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 14px;
}

.meta-grid span {
  padding: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  font-size: 13px;
}

.meta-grid b {
  display: block;
  margin-top: 5px;
  color: var(--ink);
}

.keyframe-section,
.case-keyframes {
  margin-top: 16px;
}

.keyframe-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.keyframe-head h3 {
  margin: 0;
}

.keyframe-head span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.keyframe-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.keyframe-grid.compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.keyframe-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.keyframe-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #fff;
}

.keyframe-card figcaption {
  padding: 7px 8px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 12px;
  font-weight: 800;
}

.empty-keyframes {
  grid-column: 1 / -1;
  display: grid;
  min-height: 96px;
  place-items: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.result-grid {
  grid-template-columns: 0.8fr 1.1fr 1.2fr 1fr;
  align-items: stretch;
}

.score-card {
  display: flex;
  min-height: 220px;
  flex-direction: column;
  justify-content: center;
}

.score-card strong {
  margin: 12px 0;
  font-size: 64px;
  line-height: 1;
}

#radar {
  width: 100%;
  min-height: 220px;
}

.bar-list {
  display: grid;
  gap: 12px;
}

.bar-row {
  display: grid;
  gap: 6px;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 800;
}

.bar-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edf5;
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}

.label-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.chip {
  padding: 7px 10px;
  border-radius: 8px;
  background: #eef2ff;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.chip.warn {
  color: var(--amber);
  background: #fff7ed;
}

.parse-box {
  min-height: 84px;
  padding: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  line-height: 1.7;
}

.subhead {
  margin-top: 8px;
}

.manual-panel {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 18px;
  margin-top: 14px;
}

.rubric-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.rubric-item {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.rubric-item output {
  justify-self: end;
  color: var(--blue);
  font-weight: 900;
}

input[type="range"] {
  padding: 0;
  accent-color: var(--blue);
}

.case-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.search {
  max-width: 320px;
}

.case-tools select {
  width: 240px;
}

.case-review-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(420px, 1.28fr);
  gap: 14px;
  align-items: start;
}

.case-browser {
  max-height: 760px;
  overflow: hidden;
  padding: 0;
}

.case-browser-head {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.case-browser-head span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.case-list {
  display: grid;
  gap: 10px;
  max-height: 700px;
  overflow-y: auto;
  padding: 14px;
}

.case-card {
  display: grid;
  gap: 10px;
  width: 100%;
  padding: 15px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  text-align: left;
}

.case-card:hover,
.case-card.active {
  border-color: var(--blue);
  background: #eff6ff;
}

.case-topline,
.case-meta,
.case-prompt {
  display: block;
}

.case-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.case-topline b {
  font-size: 16px;
}

.case-topline strong {
  color: var(--blue);
  font-size: 20px;
}

.case-meta {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.case-prompt {
  color: #334155;
  line-height: 1.55;
}

.case-detail {
  min-height: 520px;
}

.empty-detail {
  display: grid;
  min-height: 220px;
  place-items: center;
  color: var(--muted);
  text-align: center;
}

.case-detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.case-detail-head p {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.case-detail-head h3 {
  margin: 0;
  font-size: 30px;
}

.case-detail-head > strong {
  font-size: 42px;
  line-height: 1;
}

.score-good {
  color: var(--green);
}

.score-mid {
  color: var(--amber);
}

.score-low {
  color: var(--red);
}

.detail-meta,
.evidence-grid {
  display: grid;
  gap: 10px;
}

.detail-meta {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 16px;
}

.detail-meta span,
.evidence-grid span {
  padding: 10px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  font-size: 12px;
}

.detail-meta b,
.evidence-grid b {
  display: block;
  margin-top: 4px;
  color: var(--ink);
}

.prompt-review,
.reason-box {
  margin-bottom: 16px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.prompt-review span,
.reason-box span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.prompt-review p,
.reason-box p {
  margin: 0;
  line-height: 1.7;
}

.detail-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.mini-bars {
  display: grid;
  gap: 10px;
}

.mini-bar {
  display: grid;
  grid-template-columns: 82px 36px 1fr;
  gap: 8px;
  align-items: center;
  font-size: 13px;
}

.mini-bar b {
  color: var(--blue);
}

.mini-bar i {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8edf5;
}

.mini-bar em {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}

.evidence-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.method-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 980px;
}

.method-grid .panel {
  min-height: 150px;
  padding: 26px;
}

.method-grid h3 {
  margin-bottom: 14px;
  font-size: 22px;
}

.method-grid p {
  line-height: 1.8;
}

@media (max-width: 1180px) {
  .stat-grid,
  .comparison-overview,
  .result-grid,
  .method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .evaluation-grid,
  .manual-panel,
  .case-review-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .sidebar {
    position: static;
    width: auto;
  }

  .app {
    margin-left: 0;
    padding: 20px 14px 44px;
  }

  .sidebar nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-head,
  .page-title {
    align-items: flex-start;
    flex-direction: column;
  }

  .stat-grid,
  .comparison-overview,
  .pair-videos,
  .result-grid,
  .method-grid,
  .field-grid,
  .rubric-grid,
  .meta-grid,
  .detail-meta,
  .detail-split,
  .keyframe-grid,
  .keyframe-grid.compact {
    grid-template-columns: 1fr;
  }

  .case-tools,
  .case-tools select,
  .search {
    width: 100%;
    max-width: none;
  }

  .video-shell {
    min-height: 230px;
  }

  .model-dim-row,
  .model-dim-bar {
    grid-template-columns: 1fr;
  }

  .model-video-card + .model-video-card {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .pair-head {
    flex-direction: column;
  }
}