:root {
  --ink: #121a24; --muted: #5f6b78; --rule: #e4e8ed; --wash: #f4f6f8; --navy: #1f3a5f; --navy-2: #2b4c78;
  --hl: #fff1b8; --ok: #2e7d5b; --warn: #9a3b26; --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
html, body { margin: 0; }
body { background: #fff; color: var(--ink); font: 16px/1.7 var(--font); }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }
button { font: inherit; cursor: pointer; }

/* ---- header: brand left, plain text links right */
.top { max-width: 1140px; margin: 0 auto; height: 68px; display: flex; align-items: center; padding: 0 32px; }
.brand { font-weight: 650; white-space: nowrap; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 28px; font-size: 14px; color: var(--muted); }
.top nav a, .lang { transition: color .15s; }
.top nav a:hover, .lang:hover { color: var(--ink); }
.lang { background: none; border: 0; padding: 0; color: var(--muted); font-size: 14px; }

/* ---- hero */
main { display: block; }
.hero { max-width: 1140px; margin: 0 auto; padding: 84px 32px 64px; text-align: center; }
h1 { font-size: 52px; line-height: 1.15; letter-spacing: -.03em; margin: 0 auto 20px; max-width: 880px; }
h1 mark { background: linear-gradient(transparent 62%, var(--hl) 62%); color: inherit; }
.sub { font-size: 19px; color: var(--muted); max-width: 680px; margin: 0 auto 34px; text-wrap: balance; word-break: keep-all; }
.endpoint { display: inline-flex; align-items: center; gap: 14px; max-width: 100%; border: 1px solid var(--rule);
  border-radius: 999px; padding: 8px 8px 8px 20px; }
.endpoint code { font: 14px var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pill { flex: none; background: var(--navy); color: #fff; border-radius: 999px; padding: 8px 16px; font-weight: 600; font-size: 14px;
  transition: background-color .15s; }
.pill:hover { background: var(--navy-2); }
.logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 40px; align-items: center; margin-top: 56px;
  color: var(--muted); font-size: 14px; }
.logos span { display: inline-flex; align-items: center; }
.logos img { height: 22px; width: 22px; margin-right: 8px; }
.logos i { font-style: normal; }

/* ---- sections */
section { max-width: 1140px; margin: 0 auto; padding: 72px 32px; border-top: 1px solid var(--rule); scroll-margin-top: 8px; }
h2 { font-size: 30px; letter-spacing: -.02em; line-height: 1.3; margin: 0 0 10px; }
h3 { font-size: 20px; margin: 0 0 8px; }
.kicker { color: var(--muted); margin: 0 0 40px; }
.muted { color: var(--muted); }

.numbers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.numbers b { display: block; font-size: 40px; letter-spacing: -.02em; color: var(--navy); font-variant-numeric: tabular-nums; }
.numbers span { color: var(--muted); font-size: 14px; }

.flow { display: grid; grid-template-columns: 1fr 1fr 60px 1fr 1fr; align-items: center; }
.node { text-align: center; }
.node .dot { width: 46px; height: 46px; border-radius: 50%; margin: 0 auto 12px; display: grid; place-items: center;
  border: 1.5px solid var(--navy); color: var(--navy); font-weight: 700; }
.node b { display: block; }
.node span { font-size: 14px; color: var(--muted); }
.gate { position: relative; height: 150px; width: 0; margin: 0 auto; border-left: 2px dashed var(--navy); }
.gate em { position: absolute; top: -30px; left: 50%; transform: translateX(-50%); white-space: nowrap; font-style: normal;
  font-size: 12px; font-weight: 600; color: var(--navy); }

.tools { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; font-size: 14px; }
.tools > div { color: var(--muted); font: 12.5px/2 var(--mono); }
.tools b { display: block; margin-bottom: 8px; color: var(--ink); font: 600 14px/1.7 var(--font); }

/* ---- "Get a token" dialog: steps and command left, form or status right */
.scrim { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; padding: 24px;
  background: rgba(18, 26, 36, .38); opacity: 0; transition: opacity .22s ease; }
.scrim.open { opacity: 1; }
.dialog { position: relative; width: min(960px, 100%); max-height: calc(100vh - 48px); overflow-y: auto;
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; padding: 48px 48px 44px;
  background: #fff; border-radius: 16px; box-shadow: 0 30px 80px rgba(18, 26, 36, .22), 0 2px 8px rgba(18, 26, 36, .06);
  opacity: 0; transform: translateY(14px) scale(.98); outline: none;
  transition: opacity .26s cubic-bezier(.2, .8, .2, 1), transform .32s cubic-bezier(.2, .8, .2, 1); }
.scrim.open .dialog { opacity: 1; transform: none; }
.scrim.closing { transition-duration: .18s; }
.scrim.closing .dialog { transition-duration: .18s, .18s; transition-timing-function: ease-in; transform: translateY(8px) scale(.985); }
body.modal-open { overflow: hidden; }
.close { position: absolute; top: 16px; right: 16px; width: 36px; height: 36px; display: grid; place-items: center;
  border: 0; border-radius: 50%; background: transparent; color: var(--muted); transition: background-color .15s, color .15s; }
.close:hover { background: var(--wash); color: var(--ink); }
.close svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.dialog > div { min-width: 0; }
.steps ol { padding-left: 20px; color: var(--muted); }
.steps li { margin: 8px 0; }
.panel [data-view].enter { animation: view-in .24s cubic-bezier(.2, .8, .2, 1); }
@keyframes view-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .dialog, .scrim.closing .dialog { transform: none !important; }
  .panel [data-view].enter { animation: none; }
}
pre { background: var(--wash); border-radius: var(--radius); padding: 16px 18px; font: 13px/1.6 var(--mono); overflow-x: auto;
  margin: 24px 0 12px; white-space: pre; }
form { display: grid; gap: 14px; }
label span { display: block; font-size: 13px; color: var(--muted); }
input, textarea { width: 100%; margin-top: 6px; border: 1px solid #cfd6de; border-radius: var(--radius); padding: 12px 14px;
  font: inherit; color: var(--ink); background: #fff; transition: border-color .15s; }
input:focus, textarea:focus { outline: 2px solid rgba(31,58,95,.2); border-color: var(--navy); }
textarea { min-height: 110px; resize: vertical; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; opacity: 0; }
.primary { display: inline-block; justify-self: start; background: var(--navy); color: #fff; border: 0; border-radius: var(--radius);
  padding: 12px 26px; font-weight: 600; font-size: 15px; transition: background-color .15s; }
.primary:hover { background: var(--navy-2); }
.primary:disabled { opacity: .6; cursor: default; }
.ghost { background: transparent; border: 1px solid var(--rule); color: var(--ink); border-radius: var(--radius); padding: 7px 14px;
  font-size: 14px; transition: border-color .15s; }
.ghost:hover { border-color: #c9d1db; }
.err { color: var(--warn); font-size: 14px; margin: 0; }
.warn { color: var(--warn); font-size: 14px; font-weight: 600; }
.linkbox { display: flex; gap: 10px; align-items: center; background: var(--wash); border-radius: var(--radius);
  padding: 10px 10px 10px 14px; margin: 16px 0; }
.linkbox code { font: 13px var(--mono); word-break: break-all; flex: 1; }
.state { font-size: 18px; font-weight: 600; margin: 12px 0 4px; }
.state.ok { color: var(--ok); }
.state.no { color: var(--warn); }
.row { display: flex; gap: 10px; margin-top: 20px; }
.panel .primary + .row, #claim { margin-top: 8px; }

footer { text-align: center; color: var(--muted); font-size: 13px; padding: 40px 24px; }

@media (max-width: 860px) {
  .top { padding: 0 16px; height: auto; min-height: 60px; flex-wrap: wrap; gap: 4px 0; padding-top: 12px; padding-bottom: 12px; }
  .top nav { gap: 18px; flex-wrap: wrap; margin-left: auto; }
  .hero { padding: 48px 16px 40px; }
  h1 { font-size: 34px; }
  .sub { font-size: 17px; }
  .endpoint { flex-wrap: wrap; justify-content: center; border-radius: var(--radius); padding: 10px; }
  .logos { gap: 12px 24px; margin-top: 40px; }
  section { padding: 48px 16px; }
  .numbers, .tools { grid-template-columns: 1fr 1fr; }
  .numbers b { font-size: 32px; }
  .flow { grid-template-columns: 1fr 1fr; gap: 28px 12px; }
  .gate { grid-column: 1 / -1; height: 0; width: 100%; border-left: 0; border-top: 2px dashed var(--navy); margin: 12px 0; }
  .gate em { top: -26px; background: #fff; padding: 0 8px; }
  .scrim { padding: 12px; align-items: end; }
  .steps pre { display: none; }
  .steps ol { margin-bottom: 0; }
  .dialog { grid-template-columns: 1fr; gap: 24px; padding: 32px 20px 24px; max-height: calc(100vh - 24px);
    border-radius: 16px; }
}