:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --bg-soft: #eaf0f7;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-solid: #ffffff;
  --text: #0f172a;
  --text-strong: #020617;
  --muted: #64748b;
  --muted-soft: #94a3b8;
  --line: rgba(15, 23, 42, 0.10);
  --line-strong: rgba(15, 23, 42, 0.17);
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.10);
  --download: #2563eb;
  --upload: #f97316;
  --latency: #10b981;
  --loaded: #8b5cf6;
  --udp: #0891b2;
  --danger: #dc2626;
  --warning: #d97706;
  --success: #059669;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.10);
  --shadow-soft: 0 14px 38px rgba(15, 23, 42, 0.07);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max-width: 1180px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #08111f;
  --bg-soft: #0d1626;
  --panel: rgba(15, 23, 42, 0.78);
  --panel-solid: #111827;
  --text: #e5edf7;
  --text-strong: #ffffff;
  --muted: #9aa8ba;
  --muted-soft: #64748b;
  --line: rgba(148, 163, 184, 0.16);
  --line-strong: rgba(148, 163, 184, 0.28);
  --accent-soft: rgba(96, 165, 250, 0.14);
  --shadow: 0 28px 78px rgba(0, 0, 0, 0.30);
  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.23);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at 10% -8%, rgba(37, 99, 235, 0.16), transparent 30rem),
    radial-gradient(circle at 92% 0%, rgba(249, 115, 22, 0.12), transparent 32rem),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  line-height: 1.5;
}

button,
select,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  background: #0f172a;
}

.skip-link:focus {
  top: 1rem;
}

.topbar,
.shell,
.footer {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--text-strong);
  text-decoration: none;
  font-weight: 820;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  width: 2.1rem;
  height: 2.1rem;
  place-items: center;
  color: #fff;
  border-radius: 0.82rem;
  background: linear-gradient(135deg, var(--download), var(--upload));
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.22);
}

.brand-text {
  font-size: 1rem;
}

.version-pill {
  padding: 0.2rem 0.48rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 780;
  letter-spacing: 0;
}

.topnav {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel-solid) 78%, transparent);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

.topnav a,
.nav-button,
.text-button {
  color: var(--muted);
  text-decoration: none;
}

.topnav a,
.nav-button {
  border: 0;
  border-radius: 999px;
  background: transparent;
  padding: 0.56rem 0.86rem;
  font-size: 0.88rem;
  font-weight: 760;
}

.topnav a:hover,
.nav-button:hover,
.text-button:hover,
.topnav a:focus-visible,
.nav-button:focus-visible,
.text-button:focus-visible {
  color: var(--text-strong);
  background: rgba(148, 163, 184, 0.14);
  outline: none;
}

.shell {
  padding: 0.5rem 0 3.25rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.result-panel {
  padding: 1rem;
}

.run-strip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(12rem, 18rem);
  gap: 0.9rem;
  align-items: center;
  padding: 0.78rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: color-mix(in srgb, var(--panel-solid) 76%, transparent);
}

.run-actions {
  display: flex;
  gap: 0.55rem;
  align-items: center;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.55rem;
  border-radius: 999px;
  padding: 0 1rem;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.primary-button {
  color: #fff;
  border-color: color-mix(in srgb, var(--accent) 80%, #fff 20%);
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 68%, var(--upload) 32%));
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.25);
}

.secondary-button {
  color: var(--text);
  border-color: var(--line);
  background: color-mix(in srgb, var(--panel-solid) 72%, transparent);
}

.primary-button:hover:not(:disabled),
.secondary-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

.secondary-button.small {
  min-height: 2.25rem;
  padding: 0 0.85rem;
  font-size: 0.84rem;
}

.run-status {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.run-status span:not(.state-pill) {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.state-pill {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  border-radius: 999px;
  padding: 0.35rem 0.62rem;
  font-size: 0.78rem;
  font-weight: 850;
}

.state-pill::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: currentColor;
}

.state-pill.ready {
  color: var(--muted);
  background: rgba(148, 163, 184, 0.12);
}

.state-pill.running {
  color: var(--accent);
  background: var(--accent-soft);
}

.state-pill.complete {
  color: var(--success);
  background: rgba(16, 185, 129, 0.12);
}

.state-pill.error {
  color: var(--danger);
  background: rgba(220, 38, 38, 0.12);
}

.error-text {
  color: var(--danger);
}

.progress-block {
  display: grid;
  grid-template-columns: 3.1rem 1fr;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-weight: 780;
}

.progress-track {
  overflow: hidden;
  height: 0.62rem;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.20);
}

.progress-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--download), var(--upload));
  transition: width 0.22s ease;
}

.primary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.2fr) minmax(16rem, 0.8fr);
  gap: 1rem;
  margin-top: 1rem;
}

.speed-card,
.quality-card,
.metric-card,
.info-card,
.experience-grid button {
  border: 1px solid var(--line);
  color: var(--text);
  background: color-mix(in srgb, var(--panel-solid) 72%, transparent);
  box-shadow: none;
}

.speed-card,
.quality-card,
.metric-card {
  text-align: left;
  border-radius: var(--radius-lg);
}

.speed-card,
.quality-card {
  position: relative;
  overflow: hidden;
  min-height: 20rem;
  padding: 1.1rem;
}

.speed-card::after,
.quality-card::after {
  content: "";
  position: absolute;
  inset: auto -25% -42% 36%;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--card-accent, var(--accent)) 18%, transparent), transparent 70%);
  pointer-events: none;
}

.download-card {
  --card-accent: var(--download);
}

.upload-card {
  --card-accent: var(--upload);
}

.card-top,
.metric-card span:first-child {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-top small {
  color: var(--muted-soft);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: none;
}

.speed-value {
  display: flex;
  align-items: flex-end;
  gap: 0.4rem;
  margin-top: 0.35rem;
  color: var(--text-strong);
}

.speed-value strong {
  font-size: clamp(2.7rem, 7vw, 4.4rem);
  line-height: 0.98;
  font-weight: 900;
  letter-spacing: -0.07em;
}

.speed-value em,
.metric-card em {
  margin-bottom: 0.28rem;
  color: var(--muted);
  font-style: normal;
  font-weight: 800;
}

.metric-hint {
  display: block;
  min-height: 1.35rem;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.chart-box,
.large-chart {
  position: relative;
  display: block;
  width: 100%;
}

.chart-box {
  height: 10.4rem;
  margin-top: 1rem;
}

.large-chart {
  height: 21rem;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.chart-tooltip {
  position: absolute;
  z-index: 20;
  max-width: 16rem;
  pointer-events: none;
  white-space: pre-line;
  padding: 0.58rem 0.68rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.85rem;
  color: var(--text-strong);
  background: color-mix(in srgb, var(--panel-solid) 96%, transparent);
  box-shadow: var(--shadow-soft);
  font-size: 0.78rem;
  line-height: 1.38;
}

.quality-card {
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.quality-card .card-top {
  width: 100%;
  align-self: start;
}

.quality-gauge {
  --score: 0;
  display: grid;
  width: 9.8rem;
  height: 9.8rem;
  place-items: center;
  margin: 0.55rem 0 0.7rem;
  border-radius: 50%;
  background:
    radial-gradient(circle closest-side, var(--panel-solid) 68%, transparent 70%),
    conic-gradient(var(--success) calc(var(--score) * 1%), rgba(148, 163, 184, 0.22) 0);
}

.quality-gauge strong {
  color: var(--text-strong);
  font-size: 2.8rem;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -0.07em;
}

.quality-word {
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 880;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.metric-card {
  min-height: 8.25rem;
  padding: 1rem;
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.metric-card:hover,
.speed-card:hover,
.quality-card:hover,
.info-card[data-detail]:hover,
.experience-grid button:hover,
.details-table tr.clickable:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.metric-card strong {
  display: flex;
  align-items: flex-end;
  gap: 0.32rem;
  margin-top: 0.65rem;
  color: var(--text-strong);
}

.metric-card b {
  font-size: clamp(1.85rem, 4.2vw, 2.55rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.metric-card small {
  display: block;
  margin-top: 0.58rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.info-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr) minmax(0, 0.95fr);
  gap: 1rem;
  margin-top: 1rem;
}

.info-card {
  min-width: 0;
  padding: 1.1rem;
  border-radius: var(--radius-lg);
}

.info-card[data-detail] {
  cursor: pointer;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.section-heading span {
  display: block;
  margin-bottom: 0.18rem;
  color: var(--upload);
  font-size: 0.72rem;
  font-weight: 920;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading h2 {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.05rem;
  letter-spacing: -0.035em;
}

.kv-list {
  display: grid;
  gap: 0.08rem;
  margin: 0;
}

.kv-list div {
  display: grid;
  grid-template-columns: 6.2rem minmax(0, 1fr);
  gap: 0.8rem;
  align-items: center;
  min-height: 2.35rem;
  border-bottom: 1px solid var(--line);
}

.kv-list div:last-child {
  border-bottom: 0;
}

.kv-list dt {
  color: var(--muted);
  font-size: 0.82rem;
}

.kv-list dd {
  overflow: hidden;
  margin: 0;
  color: var(--text-strong);
  font-size: 0.86rem;
  font-weight: 760;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.compact-kv div {
  grid-template-columns: 4.5rem minmax(0, 1fr);
}

.experience-grid {
  display: grid;
  gap: 0.62rem;
}

.experience-grid button {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-items: center;
  min-height: 3.25rem;
  padding: 0.8rem 0.95rem;
  border-radius: 1rem;
  text-align: left;
}

.experience-grid span {
  color: var(--text);
  font-weight: 760;
}

.experience-grid strong {
  color: var(--text-strong);
  font-weight: 900;
}

.latency-panel,
.details-panel {
  margin-top: 1rem;
  padding: 1.1rem;
}

.chart-heading {
  align-items: center;
}

.text-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel-solid) 70%, transparent);
  padding: 0.55rem 0.78rem;
  font-size: 0.82rem;
  font-weight: 820;
}

.detail-heading {
  align-items: center;
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: flex-end;
}

.table-scroll {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  background: color-mix(in srgb, var(--panel-solid) 64%, transparent);
}

.details-table {
  width: 100%;
  min-width: 48rem;
  border-collapse: collapse;
}

.details-table th,
.details-table td {
  padding: 0.86rem 0.78rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 0.84rem;
  white-space: nowrap;
}

.details-table th {
  color: var(--muted);
  background: rgba(148, 163, 184, 0.10);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.details-table td {
  color: var(--text);
  font-weight: 650;
}

.details-table tr:last-child td {
  border-bottom: 0;
}

.details-table tr.clickable {
  cursor: pointer;
}

.empty-cell {
  padding: 2rem 1rem !important;
  color: var(--muted) !important;
  text-align: center !important;
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.22rem 0.52rem;
  font-size: 0.72rem;
  font-weight: 860;
}

.pill-download {
  color: var(--download);
  background: rgba(37, 99, 235, 0.11);
}

.pill-upload {
  color: var(--upload);
  background: rgba(249, 115, 22, 0.12);
}

.pill-latency {
  color: var(--latency);
  background: rgba(16, 185, 129, 0.12);
}

.pill-loaded {
  color: var(--loaded);
  background: rgba(139, 92, 246, 0.12);
}

.pill-udp,
.pill-loss {
  color: var(--udp);
  background: rgba(8, 145, 178, 0.12);
}

.detail-dialog {
  width: min(68rem, calc(100% - 1.5rem));
  max-height: min(48rem, calc(100% - 1.5rem));
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 1.5rem;
  color: var(--text);
  background: var(--panel-solid);
  box-shadow: var(--shadow);
}

.detail-dialog::backdrop {
  background: rgba(2, 6, 23, 0.52);
  backdrop-filter: blur(5px);
}

.dialog-shell {
  margin: 0;
  padding: 1rem;
}

.dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.35rem 0.25rem 0.95rem;
}

.dialog-head span {
  color: var(--upload);
  font-size: 0.72rem;
  font-weight: 920;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dialog-head h2 {
  margin: 0.15rem 0 0;
  color: var(--text-strong);
  font-size: 1.35rem;
  letter-spacing: -0.045em;
}

.dialog-head p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.dialog-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin-bottom: 0.9rem;
}

.dialog-stat {
  min-width: 0;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(148, 163, 184, 0.08);
}

.dialog-stat span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
}

.dialog-stat strong {
  display: block;
  overflow: hidden;
  color: var(--text-strong);
  font-size: 0.96rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dialog-table-wrap {
  max-height: 27rem;
}

.raw-table {
  min-width: 54rem;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 2rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 740;
}

.footer a:hover {
  color: var(--text-strong);
}

.doc-shell {
  width: min(100% - 2rem, 880px);
  margin: 0 auto;
  padding: 1rem 0 3rem;
}

.doc-panel {
  padding: clamp(1.25rem, 3vw, 2.2rem);
}

.doc-panel h1 {
  margin: 0 0 0.7rem;
  color: var(--text-strong);
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.08em;
}

.doc-panel .lead {
  max-width: 44rem;
  margin: 0 0 1.35rem;
  color: var(--muted);
  font-size: 1.03rem;
}

.feature-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 1.2rem 0 0;
  list-style: none;
}

.feature-list li {
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--panel-solid) 68%, transparent);
  color: var(--text);
  font-weight: 680;
}

@media (max-width: 980px) {
  .run-strip,
  .primary-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }

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

  .quality-card {
    min-height: 16rem;
  }

  .chart-box {
    height: 9.3rem;
  }
}

@media (max-width: 640px) {
  .topbar,
  .shell,
  .footer,
  .doc-shell {
    width: min(100% - 1rem, var(--max-width));
  }

  .topbar {
    padding: 0.75rem 0;
  }

  .brand-text {
    max-width: 9.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .version-pill {
    display: none;
  }

  .topnav a,
  .nav-button {
    padding: 0.5rem 0.66rem;
    font-size: 0.82rem;
  }

  .result-panel,
  .latency-panel,
  .details-panel,
  .info-card,
  .dialog-shell {
    padding: 0.75rem;
  }

  .run-strip {
    padding: 0.7rem;
  }

  .run-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .run-status {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
  }

  .progress-block {
    grid-template-columns: 2.8rem 1fr;
  }

  .primary-grid,
  .metric-grid,
  .info-grid {
    gap: 0.7rem;
  }

  .speed-card {
    min-height: 17.2rem;
    padding: 0.85rem;
  }

  .speed-value strong {
    font-size: clamp(2.65rem, 16vw, 4rem);
  }

  .chart-box {
    height: 8rem;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .metric-card {
    min-height: 6.9rem;
  }

  .kv-list div,
  .compact-kv div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
    align-items: start;
    padding: 0.55rem 0;
  }

  .kv-list dd {
    text-align: left;
  }

  .large-chart {
    height: 16rem;
  }

  .section-heading,
  .detail-heading,
  .dialog-head {
    align-items: stretch;
    flex-direction: column;
  }

  .export-actions {
    justify-content: stretch;
  }

  .export-actions .secondary-button {
    flex: 1 1 0;
  }

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

  .details-table th,
  .details-table td {
    padding: 0.72rem 0.65rem;
  }
}

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