:root {
  --bg: #07110f;
  --panel: #0d1a17;
  --panel-2: #101f1b;
  --line: #234139;
  --text: #edf8f3;
  --muted: #edf8f3;
  --dim: #edf8f3;
  --mint: #61efae;
  --amber: #ffca68;
  --red: #ff8178;
  --blue: #7acbff;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; }
button, input, select, textarea { font: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible, [tabindex="-1"]:focus-visible { outline: 3px solid rgba(97,239,174,.38); outline-offset: 2px; }
code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }

.topbar { height: 58px; padding: 0 28px; max-width: 1240px; margin: auto; display: flex; align-items: center; border-bottom: 1px solid rgba(78,123,109,.22); }
.brand { color: var(--text); text-decoration: none; font-weight: 750; font-size: 19px; letter-spacing: -.03em; display: flex; align-items: center; gap: 10px; }
.mark { width: 25px; height: 25px; padding: 5px; display: flex; align-items: end; gap: 3px; border: 1px solid var(--line); border-radius: 7px; }
.mark i { width: 3px; border-radius: 3px; background: var(--mint); }.mark i:nth-child(1) { height: 6px; }.mark i:nth-child(2) { height: 10px; }.mark i:nth-child(3) { height: 14px; }
.tagline { margin-left: 15px; padding-left: 15px; color: var(--dim); border-left: 1px solid var(--line); font-size: 13px; }
.backend-state { margin-left: auto; display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; }.backend-state i { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); }

main { max-width: 1180px; margin: auto; padding: 26px 28px 60px; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 0 20px 34px; color: var(--text); font-size: 14px; font-weight: 700; text-align: center; }
.site-footer a { color: var(--mint); font-weight: 800; text-decoration-thickness: 2px; text-underline-offset: 3px; }
.site-footer a:hover { color: #7af5bd; }
.intro { display: grid; grid-template-columns: minmax(0, 1fr) 390px; gap: 22px; align-items: center; }
.kicker { margin: 0 0 9px; color: var(--mint); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(32px, 4vw, 44px); line-height: 1.05; letter-spacing: -.05em; }
.intro > div > p:last-child { max-width: 650px; margin: 9px 0 0; color: var(--text); line-height: 1.45; }
.network-card { min-height: 102px; padding: 14px 16px; display: flex; flex-direction: column; justify-content: center; gap: 4px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.network-card span { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .09em; }.network-card strong { color: var(--mint); font: 700 19px/1.25 "SFMono-Regular", Consolas, monospace; overflow-wrap: anywhere; }.network-card small { color: var(--text); font-size: 13px; }.network-card p { margin: 3px 0 0; color: var(--dim); font-size: 12px; line-height: 1.45; }

.trace-form { margin-top: 16px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .07em; text-transform: uppercase; }
.url-row { display: grid; grid-template-columns: 1fr auto; min-height: 58px; border: 1px solid #315c50; border-radius: 10px; background: #07130f; overflow: hidden; }.url-row:focus-within { border-color: var(--mint); box-shadow: 0 0 0 3px rgba(97,239,174,.1); }
.url-row input { min-width: 0; padding: 0 17px; color: var(--text); border: 0; outline: 0; background: transparent; font: 14px "SFMono-Regular", Consolas, monospace; }
.url-row button { min-width: 150px; margin: 7px; padding: 0 18px; border: 0; border-radius: 7px; background: var(--mint); color: #06140e; font-weight: 800; cursor: pointer; }.url-row button:hover { background: #7af5bd; }.url-row button:disabled { opacity: .65; cursor: wait; }
.settings-row { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 14px; }
select, textarea { width: 100%; color: var(--text); border: 1px solid var(--line); border-radius: 8px; background: #081510; }
select { height: 46px; padding: 0 12px; } textarea { margin-top: 9px; padding: 11px; resize: vertical; font: 13px/1.5 "SFMono-Regular", Consolas, monospace; }
details > summary { color: var(--text); cursor: pointer; font-weight: 700; } .settings-row details { padding: 12px; border: 1px solid var(--line); border-radius: 8px; }.settings-row details label { margin-top: 12px; }
.click-warning { margin: 10px 0 0; color: var(--amber); font-size: 13px; }
.notice { margin-top: 18px; padding: 15px 17px; border-radius: 9px; font-weight: 650; }.notice.error { color: #ffd2ce; border: 1px solid rgba(255,129,120,.45); background: rgba(255,129,120,.09); }

.empty { margin-top: 26px; padding: 34px 20px; text-align: center; border-top: 1px solid rgba(78,123,109,.2); }.empty > span { color: var(--mint); font: 13px "SFMono-Regular", Consolas, monospace; }.empty h2 { margin: 12px 0 7px; font-size: 22px; }.empty p { max-width: 650px; margin: auto; color: var(--text); line-height: 1.5; }
.results { margin-top: 38px; }
.results-header { display: grid; grid-template-columns: 1fr auto auto; align-items: end; gap: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }.results-header > div:first-child > span { color: var(--mint); font-size: 11px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }.results-header h2 { margin: 5px 0 0; outline: 0; font-size: 27px; }.summary { color: var(--muted); font-size: 14px; }.results-header button { height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: 7px; background: var(--panel); cursor: pointer; }
.stop-message { margin: 14px 0 20px; padding: 13px 15px; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; background: rgba(97,239,174,.04); }
.hop-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.hop { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); overflow: hidden; }
.hop-main { min-height: 116px; padding: 18px; display: grid; grid-template-columns: 48px 190px minmax(0,1fr) 95px; gap: 17px; align-items: center; }
.hop-number { width: 40px; height: 40px; display: grid; place-items: center; color: var(--muted); border: 1px solid var(--line); border-radius: 50%; font: 12px "SFMono-Regular", Consolas, monospace; }
.status-block { min-height: 76px; padding: 11px 13px; display: flex; flex-direction: column; justify-content: center; gap: 5px; border-radius: 8px; }.status-block strong { font: 800 30px/1 "SFMono-Regular", Consolas, monospace; }.status-block span { font-size: 13px; line-height: 1.25; font-weight: 750; }.status-block[data-tone="success"] { color: var(--mint); background: rgba(97,239,174,.1); }.status-block[data-tone="redirect"] { color: var(--amber); background: rgba(255,202,104,.1); }.status-block[data-tone="error"] { color: var(--red); background: rgba(255,129,120,.1); }
.hop-destination { min-width: 0; }.hop-destination h3 { margin: 0 0 7px; font-size: 18px; overflow-wrap: anywhere; }.requested-url { display: block; color: var(--muted); font-size: 13px; line-height: 1.5; overflow-wrap: anywhere; }.next-target { margin-top: 11px; padding-top: 10px; border-top: 1px solid var(--line); }.next-target span { display: block; margin-bottom: 4px; color: var(--amber); font-size: 11px; font-weight: 750; text-transform: uppercase; letter-spacing: .07em; }.next-target code { color: var(--text); font-size: 13px; line-height: 1.5; overflow-wrap: anywhere; }
.hop-time { text-align: right; }.hop-time strong { display: block; font: 750 16px "SFMono-Regular", Consolas, monospace; }.hop-time span { color: var(--dim); font-size: 11px; }
.status-explanation { margin: 0; padding: 0 18px 17px 273px; color: var(--muted); line-height: 1.55; }
.technical { border-top: 1px solid var(--line); }.technical > summary { padding: 15px 18px; background: #091611; font-size: 14px; }.technical-grid { padding: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }.technical-grid section { min-width: 0; }.technical-grid .wide { grid-column: 1/-1; }.technical-grid h4 { margin: 0 0 9px; font-size: 15px; }.technical-grid section > p { margin: 0 0 9px; color: var(--dim); font-size: 13px; line-height: 1.45; }
.overview-list { margin: 0; }.overview-list > div, .dns-list > div, .header-table > div { display: grid; grid-template-columns: minmax(110px, 30%) 1fr; gap: 12px; padding: 9px 0; border-top: 1px solid var(--line); }.overview-list span, .dns-list span, .header-table span { color: var(--blue); font-size: 12px; font-weight: 700; }.overview-list code, .dns-list code, .header-table code { color: #b8cac3; font-size: 13px; line-height: 1.5; overflow-wrap: anywhere; }
.limitations { margin-top: 20px; padding: 15px 17px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); }.limitations p { color: var(--muted); line-height: 1.55; }

@media (max-width: 850px) {
  .intro { grid-template-columns: 1fr; }.network-card { min-height: 105px; }.hop-main { grid-template-columns: 42px 170px minmax(0,1fr); }.hop-time { grid-column: 3; text-align: left; }.status-explanation { padding-left: 252px; }
}
@media (max-width: 650px) {
  .topbar { padding: 0 16px; }.tagline { display: none; }.backend-state { font-size: 11px; }
  main { padding: 28px 16px 60px; }.settings-row { grid-template-columns: 1fr; }.url-row { grid-template-columns: 1fr; }.url-row input { min-height: 55px; }.url-row button { min-height: 48px; }
  .results-header { grid-template-columns: 1fr auto; }.summary { grid-column: 1/-1; grid-row: 2; }.hop-main { grid-template-columns: 42px 1fr; }.status-block { grid-column: 2; }.hop-destination { grid-column: 1/-1; }.hop-time { grid-column: 1/-1; text-align: left; }.status-explanation { padding: 0 18px 17px; }.technical-grid { grid-template-columns: 1fr; }.technical-grid .wide { grid-column: 1; }.overview-list > div, .dns-list > div, .header-table > div { grid-template-columns: 1fr; gap: 5px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }