:root {
  --bg: #eceff6;
  --panel: #f7f9fd;
  --panel-2: #e3e8f4;
  --ink: #12141c;
  --soft: #565d6e;
  --muted: #8a90a0;
  --line: #cbd1df;
  --line-strong: #9aa3b8;
  --cobalt: #2447e0;
  --cobalt-soft: #dce3ff;
  --magenta: #d6428e;
  --magenta-ink: #a92566;
  --magenta-soft: #fbdfec;
  --red: #b3264a;
  --red-soft: #f7d9e1;
  --ok: #2447e0;
  --warn: #a92566;
  --grid-line: rgba(36, 71, 224, 0.035);
  --head-bg: #2447e0;
  --head-text: #f7f9fd;
  --sans: "Bahnschrift", "Aptos", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Mono", "Consolas", "SFMono-Regular", "Liberation Mono", monospace;
}

[data-theme="dark"] {
  --bg: #0b0f1a;
  --panel: #111726;
  --panel-2: #182033;
  --ink: #e8ecf7;
  --soft: #a9b1c6;
  --muted: #7d8498;
  --line: #263047;
  --line-strong: #3a4664;
  --cobalt: #7c93ff;
  --cobalt-soft: #1a2450;
  --magenta: #ff7cbe;
  --magenta-ink: #ffa3d1;
  --magenta-soft: #3a1930;
  --red: #ff7a93;
  --red-soft: #3a1520;
  --ok: #7c93ff;
  --warn: #ffa3d1;
  --grid-line: rgba(124, 147, 255, 0.04);
  --head-bg: #2447e0;
  --head-text: #f7f9fd;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0f1a;
    --panel: #111726;
    --panel-2: #182033;
    --ink: #e8ecf7;
    --soft: #a9b1c6;
    --muted: #7d8498;
    --line: #263047;
    --line-strong: #3a4664;
    --cobalt: #7c93ff;
    --cobalt-soft: #1a2450;
    --magenta: #ff7cbe;
    --magenta-ink: #ffa3d1;
    --magenta-soft: #3a1930;
    --red: #ff7a93;
    --red-soft: #3a1520;
    --ok: #7c93ff;
    --warn: #ffa3d1;
    --grid-line: rgba(124, 147, 255, 0.04);
    --head-bg: #2447e0;
    --head-text: #f7f9fd;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bg);
  background-image: linear-gradient(to right, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 100%;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cobalt); }
::selection { background: var(--cobalt); color: var(--panel); }
:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 2px; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 24px 40px;
}

/* ---------- top signal band ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 22px;
  padding: 0 0 12px;
  border-bottom: 2px solid var(--ink);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav-brand::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-right: 12px;
  background: var(--cobalt);
  box-shadow: 12px 0 0 var(--magenta);
  flex-shrink: 0;
}

.nav-brand span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.12em;
}

.nav-label { display: none; }

.nav-scroll {
  display: flex;
  flex: 1 1 auto;
  flex-wrap: wrap;
  gap: 18px;
  min-width: 0;
}

.nav a:not(.nav-brand) {
  padding: 2px 0;
  border-bottom: 2px solid transparent;
  color: var(--soft);
  font-size: 0.82rem;
  text-decoration: none;
  white-space: nowrap;
}

.nav a:not(.nav-brand):hover { color: var(--ink); }
.nav a:not(.nav-brand).active { color: var(--ink); border-bottom-color: var(--magenta); font-weight: 600; }

.theme-btn {
  flex-shrink: 0;
  margin-left: auto;
  padding: 6px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--soft);
  cursor: pointer;
  font: inherit;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
}

.theme-btn:hover { border-color: var(--cobalt); color: var(--cobalt); }
.theme-btn svg { display: none; }

/* ---------- page head ---------- */
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
}

.page-head h1 {
  margin: 0 0 4px;
  font-family: var(--sans);
  font-size: 2.3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.page-head p { margin: 0; color: var(--soft); font-size: 0.84rem; text-wrap: pretty; }

.mask-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-bottom: 4px;
  color: var(--soft);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  user-select: none;
}

.mask-switch input { position: absolute; opacity: 0; pointer-events: none; }

.mask-slider {
  position: relative;
  width: 14px;
  height: 14px;
  border: 1px solid var(--line-strong);
  background: transparent;
}

.mask-slider::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 0;
  width: 5px;
  height: 9px;
  border: solid var(--panel);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform 0.12s;
}

.mask-switch input:checked + .mask-slider { border-color: var(--cobalt); background: var(--cobalt); }
.mask-switch input:checked + .mask-slider::after { transform: rotate(45deg) scale(1); }
.mask-switch input:focus-visible + .mask-slider { outline: 2px solid var(--cobalt); outline-offset: 2px; }

.footer {
  margin-top: 30px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.64rem;
}

.footer p { margin: 0 0 4px; }

/* ---------- panels ---------- */
.panel { display: none; }
.panel.is-active { display: block; }
.section { margin-top: 26px; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.section-head h2 {
  margin: 0 0 3px;
  font-family: var(--sans);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.section-head p { max-width: 62ch; margin: 0; color: var(--soft); font-size: 0.82rem; }

.card {
  padding: 18px 22px;
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--cobalt);
  border-radius: 0;
  background: var(--panel);
  box-shadow: none;
}

.btn {
  padding: 7px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
}

.btn:hover { border-color: var(--cobalt); color: var(--cobalt); }
.btn-primary { border-color: var(--cobalt); background: var(--cobalt); color: var(--panel); }
.btn-primary:hover { border-color: var(--magenta); background: var(--magenta); color: var(--panel); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ---------- overview readout ---------- */
.ip-card { padding: 0; border-top: 3px solid var(--cobalt); }

.ip-card-top {
  display: flex;
  align-items: flex-start;
  gap: 30px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.ip-info { flex: 0 0 360px; min-width: 0; }

.ip-label {
  margin-bottom: 5px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
}

.ip-value {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  margin-bottom: 4px;
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 2.05rem;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.ip { min-width: 0; font: inherit; overflow-wrap: anywhere; }
.ip.is-long { font-size: 1.25rem; }
.ip.is-loading { color: var(--muted); }
.ip.is-error { color: var(--muted); font-size: 1.1rem; }

.ip-value .cc { width: 30px; height: 21px; border-color: var(--cobalt); color: var(--cobalt); font-size: 0.6rem; }

.ip-geo {
  color: var(--soft);
  font-size: 0.78rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.actions { display: flex; gap: 8px; margin-top: 12px; }

.cc {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-width: 24px;
  height: 18px;
  padding: 0 4px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 0.54rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.cc[hidden] { display: none; }

.exit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.exit-item {
  min-width: 0;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.exit-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.exit-label .cc { width: 24px; height: 16px; font-size: 0.5rem; }

.exit-value { min-width: 0; margin-top: 3px; }
.exit-value .cc { width: 26px; }

.exit-ip {
  min-width: 0;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.exit-geo { display: block; margin-top: 1px; color: var(--muted); font-size: 0.7rem; overflow-wrap: anywhere; }

/* ---------- spectrum ---------- */
.ping-col { flex: 1; min-width: 0; }

.ping-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
}

.ping-head a { color: var(--magenta-ink); text-decoration: none; border-bottom: 1px solid var(--magenta); }

.ping-grid { display: flex; flex-direction: column; gap: 9px; }

.ping-group { min-width: 0; }

.ping-group-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
}

.ping-group-dot { width: 5px; height: 5px; flex-shrink: 0; background: var(--cobalt); }
.ping-group[data-group="international"] .ping-group-dot { background: var(--magenta); }
.ping-group-tag { margin-left: auto; color: var(--muted); font-size: 0.52rem; }

.ping-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }

.ping-item {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  padding: 7px 9px;
  border: 1px solid var(--line);
  background: var(--bg);
  font-size: 0.72rem;
}

.ping-icon { width: 18px; height: 18px; flex-shrink: 0; }
.ping-body { flex: 1; min-width: 0; }

.ping-name {
  color: var(--ink);
  font-size: 0.72rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.probe-bars { display: flex; align-items: flex-end; gap: 2px; height: 16px; margin-top: 2px; }

.probe-bar { width: 4px; background: var(--line); }
.probe-bar:nth-child(1) { height: 4px; }
.probe-bar:nth-child(2) { height: 7px; }
.probe-bar:nth-child(3) { height: 10px; }
.probe-bar:nth-child(4) { height: 13px; }
.probe-bar:nth-child(5) { height: 16px; }
.probe-bar.is-on { background: var(--cobalt); }
.ping-item.is-warn .probe-bar.is-on { background: var(--magenta); }
.ping-item.is-bad .probe-bar.is-on { background: var(--red); }

.ping-ms {
  flex-shrink: 0;
  color: var(--soft);
  font-family: var(--mono);
  font-size: 0.62rem;
  white-space: nowrap;
}

.ping-ms.is-fail { color: var(--red); }

/* ---------- split ledger ---------- */
.split-summary { padding: 14px 24px 4px; border-bottom: 1px solid var(--line); }

.split-summary-title {
  margin: 0 0 5px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
}

.split-summary-title span { margin-left: 8px; color: var(--soft); letter-spacing: 0; }

.split-ip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }

.split-ip-grid:empty::before {
  content: "正在检测分流出口 IP…";
  grid-column: 1 / -1;
  padding: 6px 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.split-ip-cell {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  min-width: 0;
  padding: 7px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.split-ip-cell:hover { background: var(--cobalt-soft); }

.split-ip-body { display: flex; flex: 1; flex-direction: column; gap: 1px; min-width: 0; }

.split-ip {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.76rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.split-sites {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 7px;
  min-width: 0;
  overflow: hidden;
  color: var(--soft);
  font-size: 0.64rem;
  white-space: nowrap;
}

.site-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 1;
  min-width: 0;
  max-width: 112px;
  color: var(--soft);
  font-size: 0.62rem;
}

.site-chip-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.split-logo { width: 14px; height: 14px; }

.site-more {
  flex-shrink: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.56rem;
}

/* ---------- key strip ---------- */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 14px 24px 18px;
}

.overview-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  min-width: 0;
  padding: 0 14px;
  border: 0;
  border-left: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.overview-item:first-child { padding-left: 0; border-left: 0; }
.overview-item:hover .overview-value { color: var(--cobalt); }

.overview-label { color: var(--muted); font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.05em; }

.overview-value {
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.overview-sub { color: var(--muted); font-size: 0.64rem; overflow-wrap: anywhere; }

/* ---------- quality ---------- */

/* ASN branch tree */
.asn-tree {
  margin-bottom: 18px;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--line-strong);
}

.branch {
  position: relative;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 9px 0 9px 20px;
}

.branch::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 20px;
  width: 16px;
  border-top: 2px solid var(--line-strong);
}

.branch:first-child::before { border-color: var(--cobalt); }

.branch:not(:last-child)::after {
  content: "";
  position: absolute;
  left: -18px;
  top: 20px;
  bottom: -10px;
  border-left: 2px solid var(--line-strong);
}

.branch-fork::after { display: none; }

.branch-label {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.06em;
}

.branch-value { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; min-width: 0; }

.branch-ip {
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 1.18rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.branch-asn {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1.02rem;
  font-weight: 600;
}

.branch-type { color: var(--ink); font-size: 0.9rem; font-weight: 600; }
.branch-sub { color: var(--soft); font-size: 0.7rem; overflow-wrap: anywhere; }
.branch-value .cc { width: 24px; height: 16px; font-size: 0.5rem; }

.branch-chips { display: flex; flex-wrap: wrap; gap: 6px; min-width: 0; }

.asn-chip {
  padding: 2px 8px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.6rem;
}

.asn-chip.is-on { border-color: var(--cobalt); background: var(--cobalt); color: var(--panel); }
.asn-chip.is-on.is-risk { border-color: var(--magenta); background: var(--magenta); color: var(--panel); }

.asn-score-row {
  display: grid;
  grid-template-columns: 0.6fr 1.4fr;
  gap: 26px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.quality-number {
  margin: 2px 0 0;
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
}

.quality-tag { display: inline-block; margin-top: 5px; color: var(--muted); font-family: var(--mono); font-size: 0.66rem; }
.quality-tag.is-risk { color: var(--magenta-ink); }

.risk-bar { max-width: 170px; height: 4px; margin-top: 9px; background: var(--line); }
.risk-bar span { display: block; width: 0; height: 100%; background: var(--magenta); transition: width 0.4s; }

.asn-facts { margin: 0; }

.captcha-block { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }

.captcha-block h3 {
  margin: 0 0 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.captcha-verdict {
  margin: 0 0 10px;
  padding: 9px 12px;
  border-left: 3px solid var(--cobalt);
  background: var(--cobalt-soft);
  color: var(--ink);
  font-size: 0.74rem;
}

.ai-risk { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }

.ai-risk h3 {
  margin: 0 0 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.ai-row {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
}

.ai-row:last-of-type { border-bottom: 0; }
.ai-name { color: var(--soft); font-family: var(--mono); font-size: 0.66rem; }
.ai-row code { color: var(--ink); font-family: var(--mono); font-size: 0.7rem; overflow-wrap: anywhere; }
.ai-row > span:last-child { color: var(--muted); font-size: 0.66rem; }

/* ---------- verdict ---------- */
.verdict {
  margin: 9px 0 12px;
  padding: 11px 13px;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--cobalt);
  border-radius: 0;
  background: var(--cobalt-soft);
}

.verdict.is-split { border-left-color: var(--magenta); background: var(--magenta-soft); }

.verdict-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.verdict-item { min-width: 0; }
.verdict-label { display: block; color: var(--muted); font-family: var(--mono); font-size: 0.58rem; }

.verdict-ip {
  display: block;
  margin-top: 1px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.verdict-geo { display: block; color: var(--muted); font-size: 0.66rem; overflow-wrap: anywhere; }

.verdict-text {
  margin: 8px 0 0;
  padding-top: 7px;
  border-top: 1px solid var(--line);
  font-size: 0.74rem;
}

/* ---------- filters / tabs ---------- */
.test-filters { display: flex; flex-wrap: wrap; margin-bottom: 8px; border-bottom: 1px solid var(--line); }

.filter-btn {
  padding: 5px 9px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--soft);
  cursor: pointer;
  font: inherit;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.03em;
}

.filter-btn:hover { color: var(--ink); }
.filter-btn.is-active { color: var(--ink); border-bottom-color: var(--magenta); font-weight: 600; }
.filter-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* ---------- tables ---------- */
.test-group { margin-top: 14px; }

.test-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 5px;
  color: var(--soft);
  font-family: var(--mono);
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.badge {
  padding: 1px 5px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.54rem;
  font-weight: 400;
}

.badge-domestic { border-color: var(--cobalt); color: var(--cobalt); }
.badge-international { border-color: var(--magenta); color: var(--magenta-ink); }

.test-table {
  border: 1px solid var(--line-strong);
  border-radius: 0;
  overflow: hidden;
  box-shadow: none;
}

.test-head,
.test-row {
  display: grid;
  grid-template-columns: 1.25fr 1.55fr 1.15fr 0.55fr 0.65fr;
  gap: 10px;
  align-items: center;
  min-width: 0;
  padding: 8px 14px;
}

.test-head {
  background: var(--head-bg);
  color: var(--head-text);
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.05em;
}

.test-row { border-bottom: 1px solid var(--line); background: var(--panel); font-size: 0.76rem; }
.test-row:last-child { border-bottom: 0; }
.test-row:hover { background: var(--cobalt-soft); }

.test-name { min-width: 0; }
.site-cell { display: flex; align-items: center; gap: 7px; min-width: 0; }
.favicon,
.ping-icon {
  position: relative;
  display: inline-flex;
  flex-shrink: 0;
}

.favicon[hidden],
.ping-icon[hidden] { display: none; }

.favicon { width: 16px; height: 16px; }

.favicon-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.favicon-fallback {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--cobalt);
  color: var(--panel);
  font-family: var(--mono);
  font-size: 0.48rem;
  font-weight: 600;
  line-height: 1;
}

.favicon-wrap.is-missing .favicon-fallback { display: flex; }
.favicon-wrap.is-missing .favicon-img { display: none; }

.site-name {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.test-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.56rem;
  white-space: nowrap;
}

.test-tag::before { content: ""; width: 4px; height: 4px; background: currentColor; }
.test-tag[data-tag="AI"] { color: var(--magenta-ink); }
.test-tag[data-tag="开发"],
.test-tag[data-tag="社交"] { color: var(--cobalt); }
.test-tag[data-tag="视频"] { color: var(--magenta-ink); }
.test-tag[data-tag="电商"] { color: var(--cobalt); }
.test-tag[data-tag="基础设施"],
.test-tag[data-tag="工具"] { color: var(--soft); }

.test-ip {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.74rem;
  white-space: nowrap;
  overflow: hidden;
}

.test-ip .cc { min-width: 22px; height: 16px; font-size: 0.5rem; }
.test-ip-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; }

.test-geo {
  min-width: 0;
  color: var(--muted);
  font-size: 0.68rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.test-latency { color: var(--soft); font-family: var(--mono); font-size: 0.68rem; white-space: nowrap; }
.test-status { color: var(--muted); font-family: var(--mono); font-size: 0.6rem; white-space: nowrap; }

.test-status::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 5px;
  background: currentColor;
  vertical-align: 1px;
}

.test-status.is-ok { color: var(--cobalt); }
.test-status.is-fail { color: var(--red); }
.test-status.is-pending { color: var(--muted); }

.tests-note { margin: 9px 0 0; color: var(--muted); font-size: 0.68rem; }

/* ---------- connection / tools ---------- */
.path { margin: 0 0 14px; padding: 0 0 12px; border-bottom: 1px solid var(--line); }

.path ol { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; padding: 0; list-style: none; }

.path li { position: relative; padding: 11px 14px 0 0; border-top: 1px solid var(--line-strong); }

.path li::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--panel);
  border: 1px solid var(--line-strong);
}

.path li:first-child::before { background: var(--cobalt); border-color: var(--cobalt); }

.node-label { display: block; color: var(--ink); font-size: 0.74rem; }
.node-meta { display: block; margin-top: 1px; color: var(--muted); font-family: var(--mono); font-size: 0.64rem; overflow-wrap: anywhere; }

.sheet { display: grid; grid-template-columns: 1fr 1fr; gap: 0 34px; }
.group { min-width: 0; }

.group h2 {
  margin: 6px 0 2px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.group dl { margin: 0; }

.row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  min-width: 0;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
}

.group .row:last-child,
.asn-facts .row:last-child,
.tool-grid .row:last-child { border-bottom: 0; }

dt { min-width: 0; color: var(--muted); font-family: var(--mono); font-size: 0.62rem; }
dd {
  min-width: 0;
  margin: 0;
  color: var(--ink);
  font-size: 0.76rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
  word-break: break-all;
}

dd.mono { font-family: var(--mono); font-size: 0.7rem; }

.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 34px; }
.tool-grid dl { min-width: 0; margin: 0; }
.tool-grid .row { grid-template-columns: 94px minmax(0, 1fr); }

.webrtc-entry {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 7px;
  padding: 3px 0;
  border-bottom: 1px solid var(--line);
}

.webrtc-entry:last-child { border-bottom: 0; }
.webrtc-entry-ip { font-family: var(--mono); font-size: 0.7rem; overflow-wrap: anywhere; }

.webrtc-entry-type {
  padding: 0 5px;
  border: 1px solid var(--line-strong);
  color: var(--cobalt);
  font-family: var(--mono);
  font-size: 0.54rem;
}

.webrtc-entry-src {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  white-space: nowrap;
}

.notice {
  margin-top: 16px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--magenta);
  border-radius: 0;
  background: var(--magenta-soft);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.notice[hidden] { display: none; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .container { padding: 14px 16px 32px; }
  .nav { flex-wrap: wrap; gap: 10px 14px; margin-bottom: 16px; }
  .nav-brand { flex: 1 1 auto; }
  .theme-btn { margin-left: 0; }
  .nav-scroll { order: 3; flex: 1 1 100%; flex-wrap: wrap; gap: 12px 16px; overflow: visible; }
  .page-head h1 { font-size: 1.75rem; }
  .ip-card-top { flex-direction: column; gap: 18px; padding: 18px; }
  .ip-info { min-width: 0; width: 100%; flex: 1 1 auto; }
  .asn-score-row { grid-template-columns: 1fr; gap: 12px; }
  .branch { grid-template-columns: 84px minmax(0, 1fr); gap: 10px; padding-left: 14px; }
  .branch::before { left: -14px; width: 12px; }
  .branch:not(:last-child)::after { left: -14px; }
  .asn-tree { padding-left: 14px; }
  .branch-ip { font-size: 1rem; }
  .tool-grid { grid-template-columns: 1fr; gap: 0; }
  .verdict-grid { grid-template-columns: 1fr; gap: 8px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 7px; }
  .card { padding: 14px 16px; }
  .section { margin-top: 22px; }
}

@media (max-width: 760px) {
  .page-head { flex-wrap: wrap; align-items: flex-start; }
  .page-head h1 { font-size: 1.55rem; }
  .mask-switch { margin-bottom: 0; }
  .ip-value { font-size: 1.55rem; }
  .ping-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .exit-grid { gap: 14px; }
  .exit-ip { font-size: 1rem; }
  .split-ip-grid { grid-template-columns: 1fr 1fr; gap: 0 18px; }
  .split-summary { padding: 12px 18px 4px; }
  .overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 12px 18px 14px; }
  .overview-item { padding: 7px 12px; }
  .overview-item:first-child { padding-left: 12px; }
  .overview-item:nth-child(3) { border-left: 0; }
  .path ol { grid-template-columns: 1fr; gap: 0; }
  .path li { border-top: 0; border-left: 1px solid var(--line-strong); padding: 0 0 11px 13px; }
  .path li::before { top: 2px; left: -3px; }
  .path li:last-child { padding-bottom: 0; }
  .sheet { grid-template-columns: 1fr; gap: 0; }
  .test-head { display: none; }
  .test-row {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "name status"
      "ip ip"
      "geo latency";
    gap: 4px 10px;
    padding: 9px 12px;
  }
  .test-name { grid-area: name; }
  .test-status { grid-area: status; text-align: right; }
  .test-ip { grid-area: ip; }
  .test-geo { grid-area: geo; }
  .test-latency { grid-area: latency; text-align: right; }
  .ai-row { grid-template-columns: 76px minmax(0, 1fr); }
  .ai-name { grid-row: 1 / span 2; }
  .ai-row code { grid-column: 2; }
  .ai-row > span:last-child { grid-column: 2; font-size: 0.64rem; }
}

@media (max-width: 520px) {
  .ip-card-top { padding: 14px; }
  .ip-value { gap: 6px; font-size: 1.3rem; }
  .ip-value .cc { width: 26px; }
  .ip.is-long { font-size: 1.05rem; }
  .exit-grid { gap: 12px; }
  .exit-ip { font-size: 0.95rem; }
  .exit-geo { font-size: 0.64rem; }
  .split-summary { padding: 10px 16px 4px; }
  .split-ip-cell { padding: 5px 0; }
  .split-sites { gap: 5px; }
  .site-chip { max-width: 82px; font-size: 0.58rem; }
  .split-logo { width: 12px; height: 12px; }
  .site-more { font-size: 0.52rem; }
  .overview-grid { padding: 10px 16px 12px; }
  .overview-item { padding: 6px 9px; }
  .overview-item:first-child { padding-left: 9px; }
  .ping-item { padding: 6px 8px; }
  .page-head h1 { font-size: 1.4rem; }
  .container { padding: 12px 10px 28px; }
  .card { padding: 12px 14px; }
  .ip-card { padding: 0; }
}

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