.siaj-st {
  --siaj-bg: #1e293b;
  --siaj-panel: #0f172a;
  --siaj-border: #334155;
  --siaj-text: #f1f5f9;
  --siaj-muted: #94a3b8;
  --siaj-blue: #38bdf8;
  --siaj-green: #22c55e;
  --siaj-amber: #f59e0b;
  --siaj-red: #f87171;
  box-sizing: border-box;
  max-width: 560px;
  margin: 0 auto;
  padding: 18px 22px 20px;
  overflow: hidden;
  color: var(--siaj-text);
  background: var(--siaj-bg);
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
  font-family: Verdana, "Segoe UI", Arial, sans-serif;
  line-height: 1.45;
  text-align: center;
}

.siaj-st *,
.siaj-st *::before,
.siaj-st *::after {
  box-sizing: inherit;
}

.siaj-st [hidden] {
  display: none !important;
}

.siaj-st__brand {
  margin: 0 0 10px;
}

.siaj-st__name {
  display: block;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.siaj-st__name strong,
.siaj-st__name span {
  color: var(--siaj-blue);
}

.siaj-st__by {
  display: block;
  margin-top: 1px;
  color: var(--siaj-muted);
  font-size: 11px;
}

.siaj-st__title {
  margin: 0 0 2px;
  color: var(--siaj-text);
  font-size: 18px;
  font-weight: 700;
}

.siaj-st__subtitle {
  margin: 0 0 10px;
  color: var(--siaj-muted);
  font-size: 13px;
}

.siaj-st__gauge {
  position: relative;
  width: 178px;
  height: 178px;
  margin: 0 auto 6px;
}

.siaj-st__gauge svg {
  transform: rotate(-90deg);
}

.siaj-st__gauge-bg,
.siaj-st__gauge-value {
  fill: none;
  stroke-width: 16;
}

.siaj-st__gauge-bg {
  stroke: var(--siaj-border);
}

.siaj-st__gauge-value {
  stroke: var(--siaj-blue);
  stroke-linecap: round;
  transition: stroke-dashoffset 0.25s ease, stroke 0.25s ease;
}

.siaj-st__gauge-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.siaj-st__big {
  font-size: 36px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  white-space: nowrap;
  transition: font-size 0.15s ease;
}

.siaj-st__big[data-size="medium"] { font-size: 31px; }
.siaj-st__big[data-size="long"] { font-size: 27px; }
.siaj-st__big[data-size="xlong"] { font-size: 23px; }

.siaj-st__unit {
  margin-top: 3px;
  color: var(--siaj-muted);
  font-size: 13px;
}

.siaj-st__phase {
  min-height: 16px;
  margin-top: 6px;
  color: var(--siaj-blue);
  font-size: 13px;
  font-weight: 700;
}

.siaj-st__start,
.siaj-st__contact {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 12px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.2s ease, box-shadow 0.2s ease;
}

.siaj-st__start {
  margin-top: 4px;
  padding: 12px 24px;
  color: #06283d;
  background: var(--siaj-blue);
}

.siaj-st__start:hover,
.siaj-st__contact:hover {
  transform: translateY(-2px);
}

.siaj-st__start:focus-visible,
.siaj-st__contact:focus-visible,
.siaj-st__help summary:focus-visible,
.siaj-st__promo:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

.siaj-st__start:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

.siaj-st__error {
  margin: 12px 0 0;
  padding: 10px 12px;
  color: #fecaca;
  background: rgba(127, 29, 29, 0.45);
  border: 1px solid rgba(248, 113, 113, 0.45);
  border-radius: 10px;
  font-size: 13px;
}

.siaj-st__metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.siaj-st__metric {
  min-width: 0;
  padding: 10px 6px;
  background: var(--siaj-panel);
  border-radius: 12px;
}

.siaj-st__metric-symbol {
  display: flex;
  width: 24px;
  height: 24px;
  margin: 0 auto 2px;
  align-items: center;
  justify-content: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
}

.siaj-st__metric--ping .siaj-st__metric-symbol::before { content: "P"; }
.siaj-st__metric--down .siaj-st__metric-symbol::before { content: "↓"; }
.siaj-st__metric--up .siaj-st__metric-symbol::before { content: "↑"; }
.siaj-st__metric--ping .siaj-st__metric-symbol,
.siaj-st__metric--ping .siaj-st__metric-value { color: var(--siaj-amber); }
.siaj-st__metric--down .siaj-st__metric-symbol,
.siaj-st__metric--down .siaj-st__metric-value { color: var(--siaj-blue); }
.siaj-st__metric--up .siaj-st__metric-symbol,
.siaj-st__metric--up .siaj-st__metric-value { color: var(--siaj-green); }

.siaj-st__metric-label,
.siaj-st__metric-unit {
  display: block;
  color: var(--siaj-muted);
}

.siaj-st__metric-label { font-size: 11px; }
.siaj-st__metric-unit { font-size: 10px; }

.siaj-st__metric-value {
  display: block;
  min-width: 0;
  margin-top: 2px;
  font-size: clamp(14px, 3.6vw, 19px);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.siaj-st__help {
  margin-top: 7px;
  color: var(--siaj-muted);
  font-size: 10px;
}

.siaj-st__help summary {
  color: var(--siaj-blue);
  cursor: pointer;
  list-style-position: inside;
}

.siaj-st__help p {
  margin: 6px 0 0;
  color: var(--siaj-muted);
  line-height: 1.5;
  text-align: left;
}

.siaj-st__report {
  margin-top: 18px;
  border-top: 1px solid var(--siaj-border);
  animation: siaj-report-in 0.45s ease both;
  text-align: left;
}

.siaj-st__score {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3px 12px;
  align-items: center;
  margin-top: 18px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.17), rgba(34, 197, 94, 0.14));
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 14px;
}

.siaj-st__score-kicker {
  grid-column: 1;
  color: var(--siaj-muted);
  font-size: 12px;
}

.siaj-st__score strong {
  grid-column: 1;
  font-size: 21px;
}

.siaj-st__score > span:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  color: var(--siaj-muted);
  font-size: 13px;
}

.siaj-st__score b {
  color: var(--siaj-blue);
  font-size: 30px;
}

.siaj-st__section {
  margin-top: 14px;
  padding: 14px;
  background: var(--siaj-panel);
  border: 1px solid var(--siaj-border);
  border-radius: 12px;
}

.siaj-st__section h4 {
  margin: 0 0 9px;
  color: var(--siaj-text);
  font-size: 15px;
}

.siaj-st__section > p {
  margin: 0;
  color: #cbd5e1;
  font-size: 13px;
}

.siaj-st__advice {
  margin: 10px 0 0;
  padding-left: 18px;
  color: #cbd5e1;
  font-size: 12px;
}

.siaj-st__advice:empty {
  display: none;
}

.siaj-st__advice li + li {
  margin-top: 5px;
}

.siaj-st__uses {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px 12px;
}

.siaj-st__use {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  padding: 7px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  font-size: 12px;
}

.siaj-st__use strong {
  flex: 0 0 auto;
  font-size: 11px;
}

.siaj-st__use strong[data-level="excellent"] { color: #4ade80; }
.siaj-st__use strong[data-level="good"] { color: #7dd3fc; }
.siaj-st__use strong[data-level="limited"] { color: #fbbf24; }
.siaj-st__use strong[data-level="poor"] { color: #fca5a5; }

.siaj-st__technical {
  margin: 0;
}

.siaj-st__technical > div {
  display: grid;
  grid-template-columns: minmax(120px, 0.8fr) minmax(0, 1.2fr);
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  font-size: 12px;
}

.siaj-st__technical dt { color: var(--siaj-muted); }
.siaj-st__technical dd {
  min-width: 0;
  margin: 0;
  color: var(--siaj-text);
  overflow-wrap: anywhere;
  text-align: right;
}

.siaj-st__privacy {
  margin-top: 9px !important;
  color: var(--siaj-muted) !important;
  font-size: 10px !important;
}

.siaj-st__contact {
  margin-top: 14px;
  padding: 13px 18px;
  color: #052e16;
  background: var(--siaj-green);
  box-shadow: 0 8px 20px rgba(34, 197, 94, 0.22);
}

.siaj-st__promo {
  display: block;
  margin-top: 14px;
  padding: 10px 14px;
  color: #04202e;
  background: linear-gradient(135deg, #0ea5e9, #22c55e);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(14, 165, 233, 0.3);
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.2s ease;
}

.siaj-st__promo:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(34, 197, 94, 0.4);
}

.siaj-st__promo span,
.siaj-st__promo strong { display: block; }
.siaj-st__promo span { font-size: 12px; font-weight: 700; }
.siaj-st__promo strong { margin-top: 1px; font-size: 21px; letter-spacing: 0.5px; }

.siaj-st__footer {
  margin-top: 12px;
  color: var(--siaj-text);
  font-size: 12px;
}

.siaj-st__footer a {
  color: var(--siaj-blue);
  font-weight: 700;
  text-decoration: none;
}

.siaj-st__footer small {
  color: var(--siaj-muted);
  font-size: 10px;
  line-height: 1.6;
}

@keyframes siaj-report-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 520px) {
  .siaj-st { padding: 16px 14px 18px; }
  .siaj-st__metrics { gap: 6px; }
  .siaj-st__metric { padding-inline: 4px; }
  .siaj-st__metric-value { font-size: 17px; }
  .siaj-st__uses { grid-template-columns: 1fr; }
}

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