@font-face{font-family:'Oswald';font-style:normal;font-weight:700;font-display:swap;
  src:url(/fonts/oswald-700-cyrillic.woff2) format('woff2');
  unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Oswald';font-style:normal;font-weight:700;font-display:swap;
  src:url(/fonts/oswald-700-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Manrope';font-style:normal;font-weight:400;font-display:swap;
  src:url(/fonts/manrope-400-cyrillic.woff2) format('woff2');
  unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Manrope';font-style:normal;font-weight:400;font-display:swap;
  src:url(/fonts/manrope-400-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Manrope';font-style:normal;font-weight:800;font-display:swap;
  src:url(/fonts/manrope-800-cyrillic.woff2) format('woff2');
  unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Manrope';font-style:normal;font-weight:800;font-display:swap;
  src:url(/fonts/manrope-800-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url(/fonts/plexmono-400-cyrillic.woff2) format('woff2');
  unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url(/fonts/plexmono-400-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root {
  color-scheme: dark;

  --void:       #122339;
  --dawn:       #1A3352;
  --carbon:     #182C45;
  --graphite:   #1E3552;
  --ink:        #0B1727;
  --hairline:   #2C4868;
  --hairline-lit: #3D5F86;

  --deep-blue:  #24405F;
  --blue:       #6CBDF2;
  --blue-dk:    #3A7EBB;

  --mark-web:   #3A7EBB;
  --mark-node:  #A5D6F5;

  --deep-green: #1A3A2E;
  --green:      #86B86A;
  --green-dk:   #6E9E58;

  --alarm:      #D64152;
  --alarm-lt:   #EE7A86;

  --fog:        #E3E9EF;
  --ash:        #B0BECC;
  --steel:      #8FA1B5;
  --iron:       #3D5F86;

  --bg:          var(--void);
  --surface:     var(--carbon);
  --card:        var(--graphite);
  --hover:       var(--deep-blue);
  --border:      var(--hairline);
  --border-soft: var(--graphite);
  --text:        var(--fog);
  --text-muted:  var(--ash);
  --text-dim:    var(--steel);
  --accent:      var(--blue);
  --accent-fg:   var(--ink);

  --r-control: 2px;
  --r-block:   3px;

  --font-sans:    "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Oswald", "Manrope", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, Consolas, monospace;

  --shell: 1120px;
  --pad: 40px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1 0 auto; }
::selection { background: var(--mark-web); color: var(--ink); }
html { scrollbar-width: thin; scrollbar-color: var(--hairline-lit) var(--void); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--void); }
::-webkit-scrollbar-thumb { background: var(--hairline-lit); border-radius: var(--r-control); }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.shell { width: min(var(--shell), calc(100% - var(--pad) * 2)); margin: 0 auto; }

main, header, footer { position: relative; z-index: 1; }

.topbar {
  position: sticky; top: 0; z-index: 2;
  background: var(--dawn);
  border-bottom: 1px solid var(--border);
}
.topbar .shell { display: flex; align-items: center; gap: 40px; padding: 16px 0; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); }
.brand .mark { width: 28px; height: 28px; flex: 0 0 28px; }
.brand .mark svg { width: 100%; height: 100%; display: block; }
.brand .name {
  font-family: var(--font-display); font-size: 16px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
}
.nav { display: flex; gap: 24px; margin-left: auto; font-size: 14px; }
.nav a { color: var(--text-muted); transition: color 120ms ease; }
.nav a:hover { color: var(--text); }
.nav a.on { color: var(--mark-node); }
.langs { display: flex; gap: 12px; font-family: var(--font-mono); font-size: 12px; }
.langs a { color: var(--text-dim); transition: color 120ms ease; }
.langs a:hover { color: var(--accent); }
.langs a.on { color: var(--mark-node); }
@media (max-width: 720px) {
  :root { --pad: 20px; }
  .topbar .shell { flex-wrap: wrap; gap: 12px 24px; padding: 14px 0 10px; }
  .nav { order: 3; width: 100%; margin-left: 0; flex-wrap: wrap; gap: 6px 18px;
         padding-bottom: 2px; font-size: 13px; }
  .langs { margin-left: auto; }
}

.hero { padding: 96px 0 72px; text-align: center; }
@media (max-width: 640px) { .hero { padding: 56px 0 48px; } }

h1 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.06; letter-spacing: .01em; text-transform: uppercase;
  margin: 20px 0 0;
  color: var(--text);
}
.tagline {
  font-size: clamp(18px, 2.6vw, 23px);
  color: var(--text); font-weight: 400;
  margin: 18px auto 0; max-width: 620px; line-height: 1.4;
  letter-spacing: -.01em;
}
.lede {
  margin: 18px auto 0; max-width: 600px;
  color: var(--text-muted); font-size: 15.5px;
}

section { padding: 0 0 72px; }
.sec-head { margin-bottom: 32px; }
.sec-head h2 {
  font-family: var(--font-display); font-weight: 700; font-size: 28px;
  letter-spacing: .02em; line-height: 1.18; text-transform: uppercase; color: var(--text);
  margin: 0; padding-bottom: 16px; position: relative;
}
.sec-head h2::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 48px; height: 2px; background: var(--mark-web);
}
@media (max-width: 720px) { .sec-head h2 { font-size: 24px; } }

.btn {
  --btn-cut: 12px;
  --btn-body: var(--blue);
  --btn-edge: var(--blue);
  position: relative; isolation: isolate;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 24px;
  font-family: var(--font-mono); font-size: 13px; font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent-fg);
  background: var(--btn-edge);
  border: 0; cursor: pointer;
  clip-path: polygon(var(--btn-cut) 0, 100% 0,
    100% calc(100% - var(--btn-cut)), calc(100% - var(--btn-cut)) 100%,
    0 100%, 0 var(--btn-cut));
  transition: background 120ms ease, color 120ms ease;
}
.btn::before {
  content: ""; position: absolute; inset: 1px; z-index: -1;
  background: var(--btn-body);
  clip-path: polygon(var(--btn-cut) 0, 100% 0,
    100% calc(100% - var(--btn-cut)), calc(100% - var(--btn-cut)) 100%,
    0 100%, 0 var(--btn-cut));
  transition: background 120ms ease;
}
.btn:hover:not(:disabled) { --btn-body: var(--mark-node); --btn-edge: var(--mark-node); }
.btn:disabled { cursor: default; --btn-body: var(--bg); --btn-edge: var(--border); color: var(--text-dim); }
.btn svg { width: 16px; height: 16px; fill: currentColor; }
.btn-icon { display: inline-flex; }

.btn.ghost { --btn-body: var(--bg); --btn-edge: var(--border); color: var(--text); }
.btn.ghost:hover:not(:disabled) { --btn-body: var(--mark-web); --btn-edge: var(--mark-web); }

.btn.danger { --btn-edge: var(--alarm); --btn-body: var(--alarm); color: #fff; }
.btn.danger:hover:not(:disabled) { --btn-body: var(--alarm-lt); }

.cta-row { margin-top: 22px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.cta-note { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-dim); }

.spinner {
  width: 15px; height: 15px; border-radius: 50%;
  border: 2px solid rgba(8,13,20,.35); border-top-color: var(--accent-fg);
  animation: spin-fast .7s linear infinite;
}
@keyframes spin-fast { to { transform: rotate(360deg); } }

.result {
  border: 1px solid var(--border);
  border-radius: var(--r-block);
  background: var(--surface);
  padding: 26px 28px;
}
@media (max-width: 640px) { .result { padding: 20px 18px; } }

.result-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 20px;
}
.result-head h3 {
  margin: 0;
  font-family: var(--font-display); font-weight: 700; font-size: 21px;
  letter-spacing: .05em; text-transform: uppercase;
}
.countdown {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .05em;
  font-variant-numeric: tabular-nums;
  color: var(--green);
  border: 1px solid rgba(134,184,106,.32);
  background: rgba(15,43,28,.5);
  padding: 4px 10px; border-radius: var(--r-control);
  white-space: nowrap;
}
.countdown.ending {
  color: var(--alarm-lt);
  border-color: rgba(214,65,82,.42);
  background: rgba(169,53,68,.18);
}

.kv { display: grid; grid-template-columns: 132px 1fr; gap: 1px; background: var(--border-soft); border: 1px solid var(--border-soft); border-radius: var(--r-block); overflow: hidden; }
@media (max-width: 560px) { .kv { grid-template-columns: 1fr; } }
.kv dt, .kv dd {
  margin: 0; padding: 11px 14px; background: var(--bg);
  display: flex; align-items: center; gap: 10px; min-width: 0;
}
.kv dt {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--text-dim);
}
.kv dd { font-family: var(--font-mono); font-size: 13.5px; word-break: break-all; }
.kv dd a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.kv dd a:hover { color: var(--mark-node); }

.copy {
  --btn-cut: 6px;
  --btn-edge: var(--border);
  margin-left: auto; flex: 0 0 auto;
  position: relative; isolation: isolate;
  background: var(--btn-edge); border: 0;
  color: var(--text-dim); cursor: pointer;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase;
  padding: 3px 8px;
  clip-path: polygon(var(--btn-cut) 0, 100% 0,
    100% calc(100% - var(--btn-cut)), calc(100% - var(--btn-cut)) 100%,
    0 100%, 0 var(--btn-cut));
  transition: color .14s, background .14s;
}
.copy::before {
  content: ""; position: absolute; inset: 1px; z-index: -1;
  background: var(--bg);
  clip-path: polygon(var(--btn-cut) 0, 100% 0,
    100% calc(100% - var(--btn-cut)), calc(100% - var(--btn-cut)) 100%,
    0 100%, 0 var(--btn-cut));
}
.copy:hover { color: var(--accent); --btn-edge: var(--blue-dk); }
.copy.done { color: var(--green); --btn-edge: var(--green-dk); }

.result-note {
  margin: 16px 0 0; font-size: 13.5px; color: var(--text-muted);
}
.result-note strong { color: var(--text); font-weight: 800; }

.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 18px 34px;
  border-left: 1px solid var(--border);
  margin-left: 10px;
}
.steps > li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps > li::before {
  content: counter(step);
  position: absolute; left: -10px; top: 0;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--deep-blue); border: 1px solid var(--mark-web);
  color: var(--mark-node);
  font-family: var(--font-mono); font-size: 10.5px;
  display: grid; place-items: center;
}
.steps p { margin: 0 0 8px; font-size: 14px; color: var(--text-muted); }
.steps p strong { color: var(--text); font-weight: 800; }

.snippet {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg); border: 1px solid var(--border-soft);
  border-radius: var(--r-block); padding: 9px 12px;
  font-family: var(--font-mono); font-size: 12.5px;
  color: var(--text);
}
.snippet code { display: block; flex: 1; min-width: 0; white-space: pre; overflow-x: auto; }
.snippet .copy { flex: 0 0 auto; }

.notice {
  border: 1px solid var(--border); border-radius: var(--r-block);
  padding: 14px 16px; font-size: 14px; color: var(--text-muted);
  background: var(--surface);
}
.notice.alarm { border-color: rgba(214,65,82,.42); background: rgba(169,53,68,.14); color: var(--fog); }
.notice.waiting { border-color: var(--blue-dk); background: var(--deep-blue); }

footer { border-top: 1px solid var(--border); padding: 40px 0 56px; }
footer .shell { display: flex; align-items: baseline; gap: 16px 40px; flex-wrap: wrap; }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 24px; font-family: var(--font-mono); font-size: 13px; }
.foot-links a { color: var(--text-muted); transition: color 120ms ease; }
.foot-links a:hover { color: var(--accent); }

[hidden] { display: none !important; }

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