:root {
  color-scheme: dark;
  --paper: #080d18;
  --ink: #edf3fc;
  --muted: #9dacc4;
  --rule: #273650;
  --panel: #101a2b;
  --accent: #a2c7ff;
  --cyan: #7ae5e2;
  --mono: ui-monospace, Consolas, monospace;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--paper);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(ellipse 65% 540px at 78% 210px, #172e56 0, transparent 90%), radial-gradient(ellipse 35% 420px at 15% 260px, #102039 0, transparent 95%); }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
h1, h2, h3, p { margin: 0; }
p { line-height: 1.75; }
[hidden] { display: none !important; }
section[id] { scroll-margin-top: 16px; }
.wrap { width: min(100% - 72px, 1180px); margin-inline: auto; }
.header { width: min(100% - 72px, 1320px); margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 82px; border-bottom: 1px solid var(--rule); }
.brand { display: inline-flex; gap: 10px; align-items: center; font: 750 14px var(--mono); white-space: nowrap; letter-spacing: -.3px; }
.brand img { flex: none; }
.brand small { display: block; margin-top: 4px; font-size: 8px; letter-spacing: 1px; color: var(--muted); }
nav { display: flex; gap: clamp(14px, 3vw, 38px); font-size: 14px; color: var(--muted); }
nav a:hover, .text-link:hover, .card-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 13px 17px; border-radius: 7px; border: 1px solid #b6d3ff; background: var(--accent); color: #09172f; font-weight: 750; font-size: 14px; min-height: 44px; }
.button:hover { background: #c2dbff; }
.button-small { padding: 9px 12px; min-height: 38px; }
.button-secondary { border-color: #455b7c; background: transparent; color: var(--ink); }
.button-secondary:hover { background: #192945; }
.header .button { background: #132039; color: var(--accent); border-color: #3f5c89; }
.header .button:hover { background: #1b3156; }
.hero { position: relative; isolation: isolate; display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 72px); align-items: center; padding-block: clamp(48px, 7vw, 97px); }
.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 4% 12%, #c8dcff66 0 1px, transparent 2px),
    radial-gradient(circle at 14% 26%, #a5c9ff4d 0 1px, transparent 2px),
    radial-gradient(circle at 23% 9%, #d9e8ff99 0 1px, transparent 2.5px),
    radial-gradient(circle at 31% 16%, #a5c9ff55 0 1px, transparent 2px),
    radial-gradient(circle at 43% 9%, #a5c9ff55 0 1px, transparent 2px),
    radial-gradient(circle at 49% 23%, #c8dcff80 0 1px, transparent 2.5px),
    radial-gradient(circle at 55% 7%, #d9e8ff80 0 1px, transparent 2.5px),
    radial-gradient(circle at 67% 12%, #a5c9ff55 0 1px, transparent 2px),
    radial-gradient(circle at 76% 7%, #c8dcff80 0 1px, transparent 2.5px),
    radial-gradient(circle at 91% 11%, #a5c9ff66 0 1px, transparent 2px),
    radial-gradient(circle at 97% 23%, #c8dcff80 0 1px, transparent 2px),
    radial-gradient(circle at 46% 69%, #a5c9ff55 0 1px, transparent 2px),
    radial-gradient(circle at 8% 88%, #a5c9ff66 0 1px, transparent 2px),
    radial-gradient(circle at 25% 92%, #d9e8ff80 0 1px, transparent 2.5px),
    radial-gradient(circle at 38% 84%, #a5c9ff55 0 1px, transparent 2px),
    radial-gradient(circle at 52% 90%, #c8dcff80 0 1px, transparent 2.5px),
    radial-gradient(circle at 63% 95%, #a5c9ff55 0 1px, transparent 2px),
    radial-gradient(circle at 81% 87%, #c8dcff66 0 1px, transparent 2px),
    radial-gradient(circle at 94% 92%, #d9e8ff80 0 1px, transparent 2.5px);
}
.kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); font: 700 11px/1.6 var(--mono); letter-spacing: .11em; }
.art-top i { width: 7px; height: 7px; border-radius: 50%; display: inline-block; background: var(--cyan); box-shadow: 0 0 10px #7ae5e270; }
h1 { font-size: clamp(41px, 5.5vw, 77px); line-height: 1.1; letter-spacing: -.055em; margin-block: 20px; }
h1 em { color: var(--accent); font-style: normal; background: linear-gradient(100deg, #a2c7ff, #a2eae7); background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { max-width: 440px; color: var(--muted); font-size: 16px; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 13px 19px; margin-top: 23px; }
.text-link { font-size: 14px; font-weight: 650; }
.hero-art { margin: 0; min-width: 0; background: #0d1729; border: 1px solid #46638e; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 60px #03061188, 0 0 40px #458cff20; }
.hero-copy, .hero-art { animation: enter .7s ease-out both; }
.hero-art { animation-delay: .12s; }
.art-top, .art-bottom { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 15px 17px; font: 650 11px var(--mono); letter-spacing: .06em; color: var(--muted); }
.art-top { border-bottom: 1px solid var(--rule); }
.art-top span:first-child, .art-bottom span:last-child { color: var(--ink); }
.art-top i { margin-right: 5px; }
.art-bottom { border-top: 1px solid var(--rule); }
.environment-options { display: flex; flex-wrap: wrap; gap: 8px; padding: 13px 17px; background: #101d33; }
.environment-options button { padding: 7px 11px; border: 1px solid #354d73; border-radius: 6px; color: var(--muted); background: transparent; font-size: 12px; transition: color .18s, background .18s, border-color .18s; }
.environment-options button:hover { color: var(--ink); }
.environment-options button[aria-pressed="true"] { border-color: #78c0da; background: #193650; color: #b7f3ec; }
.topology { position: relative; display: grid; gap: 15px; padding: clamp(14px, 3vw, 29px); background: repeating-linear-gradient(0deg, transparent 0 21px, #42609922 21px 22px), repeating-linear-gradient(90deg, transparent 0 21px, #42609922 21px 22px); }
.topology-row { position: relative; display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; align-items: center; gap: 10px; min-height: 68px; padding: 11px; background: #111f36; border: 1px solid #354d73; border-radius: 7px; }
.topology-row + .topology-row::before { content: ""; position: absolute; width: 1px; height: 16px; background: #6898df; top: -16px; left: 27px; }
.topology-row + .topology-row::after { content: ""; position: absolute; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); left: 25px; top: -16px; opacity: 0; animation: signal .9s .8s ease-out 2; }
.topology-row:last-child::after { animation-delay: 1.1s; }
.topology[data-environment="private"] .topology-row { border-color: #4d7791; }
.topology[data-environment="offline"] .topology-row { border-color: #65817a; }
.layer-index { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 5px; border: 1px solid #3d6296; background: #192d4e; color: var(--accent); font: 750 11px var(--mono); }
.topology-row strong, .topology-row small { display: block; }
.topology-row strong { font-size: 14px; }
.topology-row small { margin-top: 4px; color: var(--muted); font: 600 9px var(--mono); letter-spacing: .05em; }
.topology-row ul { display: flex; flex-wrap: wrap; justify-content: end; gap: 4px; list-style: none; padding: 0; margin: 0; }
.topology-row li { padding: 4px 5px; border-radius: 4px; background: #1b3050; color: #b5d2ff; font: 650 10px var(--mono); white-space: nowrap; }
.audience { border-block: 1px solid var(--rule); background: #0c1422; }
.audience .wrap { display: flex; align-items: center; gap: 24px; padding-block: 15px; }
.audience span { font-size: 12px; font-weight: 750; white-space: nowrap; color: var(--muted); }
.audience ul { padding: 0; margin: 0; display: flex; flex-wrap: wrap; list-style: none; gap: 7px; font-size: 12px; }
.audience li { border: 1px solid var(--rule); border-radius: 5px; padding: 5px 9px; color: #bdc9dd; }
.section { padding-block: clamp(48px, 7vw, 95px); }
.section-head { display: grid; grid-template-columns: 1fr minmax(200px, 310px); align-items: end; gap: 15px 30px; margin-bottom: 25px; }
h2 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.12; letter-spacing: -.06em; margin-top: 8px; }
.section-head p { color: var(--muted); font-size: 14px; }
.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.service-card { display: flex; flex-direction: column; min-width: 0; background: linear-gradient(145deg, #15233a, var(--panel) 75%); border: 1px solid var(--rule); border-radius: 12px; padding: 20px; transition: border-color .22s, box-shadow .22s, translate .22s; }
.service-card:hover, .service-card:focus-within { border-color: #587eb7; box-shadow: 0 10px 26px #03061170; translate: 0 -3px; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.tag { background: #1a2a45; color: #bfd3f3; padding: 4px 7px; border-radius: 4px; font-size: 11px; }
.service-card h3 { font-size: 18px; margin-top: 15px; }
.service-card p { color: var(--muted); font-size: 13px; margin-block: 7px 14px; }
.card-link { font-size: 12px; font-weight: 700; margin-top: auto; width: fit-content; color: var(--accent); }
.roadmap { background: #0b1424; border-block: 1px solid var(--rule); }
.roadmap .kicker { color: var(--cyan); }
.road-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 16px; }
.road-grid details { border: 1px solid var(--rule); background: var(--panel); border-radius: 10px; }
summary { cursor: pointer; display: flex; align-items: start; justify-content: space-between; gap: 12px; padding: 19px; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary b::before { content: '+'; color: var(--cyan); }
details[open] summary b::before { content: '−'; }
summary small, summary strong, summary span span { display: block; }
summary small { color: var(--cyan); font: 700 11px/1.5 var(--mono); letter-spacing: .07em; }
summary strong { font-size: 22px; margin-block: 7px; }
summary span span { color: var(--muted); font-size: 13px; }
dl { margin: 0; padding-inline: 19px; }
dl div { border-top: 1px solid var(--rule); padding: 11px 0; display: grid; grid-template-columns: minmax(130px, 1fr) 2fr; gap: 12px; }
dt { font-weight: 700; font-size: 13px; }
dd { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; list-style: none; padding: 0; margin: 0; }
.steps li { padding: 18px 0 0; border-top: 2px solid #5274a9; }
.steps span { font: 750 11px var(--mono); color: var(--accent); }
.steps h3 { margin-block: 8px 5px; }
.steps p { color: var(--muted); font-size: 14px; }
.brief { background: #0d1728; border-block: 1px solid var(--rule); padding-block: clamp(42px, 6vw, 80px); }
.brief-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(22px, 6vw, 70px); }
.brief p { color: var(--muted); margin-top: 13px; max-width: 320px; }
.brief .fine { font-size: 13px; }
.contact-email { color: var(--accent); overflow-wrap: anywhere; text-decoration: underline; text-underline-offset: 4px; }
form .form-note { max-width: none; font-size: 12px; }
form { background: var(--panel); border: 1px solid var(--rule); border-radius: 10px; padding: clamp(15px, 3vw, 26px); min-width: 0; }
label { display: grid; gap: 6px; font-size: 13px; font-weight: 650; margin-bottom: 13px; }
input, textarea, select { width: 100%; border: 1px solid #445675; border-radius: 5px; padding: 9px; background: #090f1c; color: var(--ink); min-width: 0; font-weight: 400; }
input::placeholder, textarea::placeholder { color: var(--muted); }
input[type="date"] { color-scheme: dark; }
textarea { resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
#brief-result { border-top: 1px solid var(--rule); margin-top: 18px; padding-top: 16px; }
#brief-status { color: var(--muted); font-size: 13px; }
.footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; min-height: 82px; font-size: 13px; color: var(--muted); }
@media (max-width: 960px) {
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topology-row { grid-template-columns: 32px minmax(0, 1fr); }
  .topology-row ul { grid-column: 2; justify-content: start; }
}
@media (max-width: 740px) {
  .wrap, .header { width: calc(100% - 36px); }
  .header { flex-wrap: wrap; padding-block: 12px; gap: 10px; }
  nav { order: 3; width: 100%; padding-block: 6px; }
  .hero, .road-grid, .brief-grid, .section-head { grid-template-columns: 1fr; }
  .hero { gap: 23px; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
  .service-grid, .form-row { grid-template-columns: 1fr; }
  dl div { grid-template-columns: 1fr; gap: 4px; }
  .audience .wrap { align-items: start; }
}
@keyframes enter {
  from { opacity: .6; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes signal {
  15% { opacity: 1; }
  100% { opacity: 0; transform: translateY(16px); }
}
.revealed { animation: enter .45s ease-out; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-copy, .hero-art, .topology-row + .topology-row::after, .revealed { animation: none; }
  .service-card, .environment-options button { transition: none; }
  .service-card:hover, .service-card:focus-within { translate: none; }
}