:root {
  --bg: #f5f6fa;
  --bg-card: #ffffff;
  --bg-elevated: #fbfcfe;
  --border: rgba(15, 23, 42, 0.08);
  --text: #1f2937;
  --text-muted: #667085;
  --accent: #00c9a7;
  --accent-dim: #5b8cff;
  --accent-alt: #ff5fa2;
  --warn: #b26a00;
  --danger: #c0392b;
  --ok: #2e7d32;
  --radius: 12px;
  --font: "DM Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08), 0 14px 30px rgba(15, 23, 42, 0.05);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  height: 100%;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: #f7f8fc;
  background-image: none;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.wrap {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #ffffff 0%, #f7f9ff 100%);
  backdrop-filter: none;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header::after {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dim), var(--accent-alt), var(--accent));
  background-size: 300% 100%;
  animation: header-gradient-move 8s linear infinite;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 52px;
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}
.logo:hover {
  text-decoration: none;
}
.logo:hover .logo-lane {
  color: var(--text);
}
.logo:hover .logo-dns {
  filter: brightness(1.1);
}
.logo-image {
  display: block;
  width: 150px;
  height: 35px;
  max-width: 150px;
  object-fit: contain;
}
.logo picture,
.logo img {
  display: block;
}
@media (max-width: 560px) {
  .logo-image {
    height: 32px;
    max-width: 120px;
  }
}

.nav {
  display: flex;
  gap: 0.25rem 1.25rem;
  flex-wrap: wrap;
  align-items: center;
}
.nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.35rem 0;
}
.nav a:hover,
.nav a.active {
  color: var(--accent-dim);
  text-decoration: none;
}
.nav-dropdown {
  position: relative;
}
.nav-trigger {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0.35rem 0.25rem;
}
.nav-trigger.active,
.nav-trigger:hover {
  color: var(--accent-dim);
}
.nav-dropdown:hover .nav-menu,
.nav-dropdown:focus-within .nav-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.nav-menu {
  position: absolute;
  top: calc(100% + 0.65rem);
  left: 0;
  min-width: 280px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: 0.35rem;
  display: grid;
  gap: 0.25rem;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.16s ease, transform 0.16s ease;
  z-index: 50;
}
.nav-menu a {
  display: grid;
  gap: 0.12rem;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  color: var(--text);
}
.nav-menu a:hover,
.nav-menu a.active {
  background: rgba(0, 201, 167, 0.08);
}
.menu-title {
  font-size: 0.9rem;
  font-weight: 700;
}
.menu-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.25;
}
@media (max-width: 720px) {
  .nav {
    gap: 0.35rem 0.9rem;
  }
  .nav-menu {
    left: auto;
    right: 0;
    min-width: 240px;
  }
}

/* Ads */
.ad-slot {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1rem;
}
.ad-slot--top {
  border-bottom: 1px solid var(--border);
  background: #fff;
}
.ad-slot--leaderboard {
  min-height: 90px;
}
.ad-slot--mrec {
  min-height: 250px;
}
.ad-rail {
  position: fixed;
  top: 120px;
  width: 160px;
  z-index: 20;
  display: none;
}
.ad-rail .ad-placeholder,
.ad-rail ins.adsbygoogle {
  width: 100%;
  max-width: 160px;
  min-height: 600px;
}
.ad-rail--left {
  left: 16px;
}
.ad-rail--right {
  right: 16px;
}
@media (min-width: 1440px) {
  .ad-rail {
    display: block;
  }
}
@media (max-width: 1439px) {
  .ad-rail {
    display: none;
  }
}
.ad-placeholder {
  width: 100%;
  max-width: 728px;
  height: 90px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  box-shadow: var(--shadow-sm);
}

.main-content {
  padding: 2rem 0 3rem;
  flex: 1 1 auto;
}
@media (min-width: 1440px) {
  .main-content {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

.portal-search {
  margin: 0 auto 1.25rem;
  max-width: 720px;
}

.portal-search .input-lg {
  width: 100%;
}

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

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 2.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin: 0 0 0.75rem;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero .hero-tagline {
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 0.75rem;
  font-size: 1.05rem;
}
.hero .hero-brand {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 auto;
}
.hero .hero-brand a {
  font-weight: 600;
}

/* Tool grid */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.tool-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}
.tool-card-link::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 2px;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-dim), var(--accent-alt), var(--accent));
  background-size: 300% 300%;
  opacity: 0;
  transition: opacity 0.2s ease;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}
.tool-card-link:hover::before,
.tool-card-link:focus-visible::before {
  opacity: 1;
  animation: tool-card-border-move 2.6s linear infinite;
}
.tool-card-link:focus-visible {
  outline: 2px solid rgba(91, 140, 255, 0.35);
  outline-offset: 3px;
}

.tool-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  transition: border-color 0.2s, transform 0.2s;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 1;
  min-height: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.tool-card-link:hover .tool-card,
.tool-card-link:focus-visible .tool-card {
  border-color: rgba(91, 140, 255, 0.38);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(91, 140, 255, 0.14), 0 0 0 1px rgba(0, 201, 167, 0.08), var(--shadow-sm);
}
.tool-card--soon {
  opacity: 0.65;
}
.tool-card .icon {
  width: 8px;
  height: 8px;
  margin-bottom: 0.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--accent-dim);
  flex: 0 0 auto;
}
.tool-card .icon svg {
  width: 8px !important;
  height: 8px !important;
  max-width: none;
  max-height: none;
  display: block;
  flex: 0 0 auto;
}
.tool-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  line-height: 1.2;
  min-height: 2.4em;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.tool-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.3;
  min-height: 1.3em;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
}
.tool-status {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(0, 201, 167, 0.08);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  width: fit-content;
}

@keyframes tool-card-border-move {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 300% 50%;
  }
}

@keyframes header-gradient-move {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 300% 50%;
  }
}

/* Tool page */
.page-tool h1 {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
}
.page-tool .lead {
  color: var(--text-muted);
  margin: 0 0 1.5rem;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.input-lg {
  flex: 1;
  min-width: 200px;
  padding: 0.85rem 1.1rem;
  font-size: 1rem;
  font-family: var(--mono);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
}
.input-lg:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 201, 167, 0.15);
}

.btn {
  padding: 0.85rem 1.5rem;
  font-weight: 600;
  font-size: 1rem;
  font-family: var(--font);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #04221c;
}
.btn:hover {
  filter: brightness(1.08);
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.results-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.results-panel h2 {
  margin: 0;
  padding: 0.7rem 0.95rem;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.scorebar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 0.95rem;
  border-bottom: 1px solid var(--border);
}
.scorebar p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
  max-width: 520px;
}
.score {
  font-size: 1.55rem;
  font-weight: 800;
  margin-right: 0.65rem;
}
.grade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.8rem;
  height: 1.8rem;
  border-radius: 999px;
  background: rgba(0, 201, 167, 0.15);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.9rem;
}

/* A record table */
.table-wrap {
  overflow-x: auto;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
table.data th,
table.data td {
  padding: 0.75rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
table.data th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
table.data td.mono {
  font-family: var(--mono);
  font-size: 0.85rem;
}
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-ok {
  background: rgba(92, 219, 149, 0.15);
  color: var(--ok);
}
.badge-warn {
  background: rgba(245, 166, 35, 0.15);
  color: var(--warn);
}
.badge-err {
  background: rgba(255, 107, 107, 0.15);
  color: var(--danger);
}

/* Health report */
.health-section {
  padding: 0.85rem 0.95rem;
  border-bottom: 1px solid var(--border);
}
.health-section:last-child {
  border-bottom: none;
}
.health-section h3 {
  margin: 0 0 0.5rem;
  font-size: 0.82rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.report-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.report-table th,
.report-table td {
  padding: 0.38rem 0.45rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.report-table th {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.68rem;
  font-weight: 700;
  text-align: left;
}
.report-table tbody tr:last-child td {
  border-bottom: none;
}
.report-table .cell-check {
  font-weight: 700;
  white-space: nowrap;
}
.report-table .cell-details,
.report-table .cell-why {
  color: var(--text);
  line-height: 1.35;
}
.report-table .cell-why {
  color: var(--text-muted);
  max-width: 260px;
}
.cell-meta {
  margin-top: 0.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.72rem;
}
.chip span {
  color: var(--text-muted);
}
.chip code,
.mono {
  font-family: var(--mono);
}
.row-pass td:first-child .badge,
.row-info td:first-child .badge,
.row-warn td:first-child .badge,
.row-bad td:first-child .badge {
  min-width: 3.8rem;
  text-align: center;
}
.row-pass { background: rgba(46, 125, 50, 0.02); }
.row-info { background: rgba(0, 143, 122, 0.02); }
.row-warn { background: rgba(178, 106, 0, 0.03); }
.row-bad { background: rgba(192, 57, 43, 0.03); }
.alert-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.alert-list li {
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
}
.alert-list li.info {
  background: rgba(0, 201, 167, 0.08);
  border-left: 3px solid var(--accent);
}
.alert-list li.warn {
  background: rgba(245, 166, 35, 0.1);
  border-left: 3px solid var(--warn);
}
.alert-list li.bad {
  background: rgba(255, 107, 107, 0.1);
  border-left: 3px solid var(--danger);
}
.kv-grid {
  display: grid;
  gap: 0.5rem;
  font-size: 0.9rem;
}
.kv-grid div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.5rem;
}
.kv-grid dt {
  color: var(--text-muted);
  margin: 0;
}
.kv-grid dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  word-break: break-all;
}

.loader {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}
.error-msg {
  padding: 1rem 1.25rem;
  background: rgba(255, 107, 107, 0.1);
  color: var(--danger);
  border-radius: var(--radius);
  margin: 1rem 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: auto;
  background: #fff;
  flex-shrink: 0;
}
.footer-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: minmax(200px, 300px) 1fr;
    align-items: start;
  }
}
.footer-ad .ad-placeholder {
  min-height: 250px;
}
.footer-meta p {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Admin */
.admin-body {
  max-width: 640px;
}
.admin-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-md);
}
.admin-card h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}
.admin-tabs-shell {
  padding-top: 1.75rem;
  padding-bottom: 1.25rem;
}
.admin-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 14px;
  padding: 0.85rem;
  margin-bottom: 1.35rem;
  box-shadow: var(--shadow-sm);
}
.admin-tab {
  appearance: none;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font: inherit;
  cursor: pointer;
}
.admin-tab.active {
  color: var(--text);
  border-color: rgba(0, 143, 122, 0.35);
  background: rgba(0, 143, 122, 0.06);
}
.admin-panel {
  padding: 0.25rem 0.15rem 0.15rem;
}
.speed-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: end;
}
.speed-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}
.speed-stat {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow-sm);
}
.speed-stat span {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.speed-stat strong {
  font-size: 1.15rem;
}
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-family: var(--font);
}
.form-group textarea {
  min-height: 80px;
  font-family: var(--mono);
  font-size: 0.85rem;
}
.form-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}