:root {
  --bg: #08090b;
  --bg-raised: #0e1014;
  --bg-card: #111419;
  --card-hover: #151920;
  --header-bg: rgba(8, 9, 11, 0.86);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #e9e7e2;
  --text-dim: #9a9c9f;
  --text-faint: #6b6e73;
  --accent: #e08a4f;
  --accent-soft: rgba(224, 138, 79, 0.12);
  --ok: #6fcf97;
  --radius: 3px;
  --max: 1140px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}



* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; gap: 24px;
  height: 62px;
}
.logo {
  font-family: var(--mono); font-size: 15px; letter-spacing: 0.14em;
  text-transform: uppercase; font-weight: 600; white-space: nowrap;
}
.logo span { color: var(--accent); }

.nav { display: flex; gap: 22px; margin-left: 10px; }
.nav a {
  font-size: 13px; color: var(--text-dim);
  letter-spacing: 0.02em; padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--text); border-bottom-color: var(--line-strong); }
.nav a.active { color: var(--text); border-bottom-color: var(--accent); }

.header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.lang {
  display: flex; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; font-family: var(--mono); font-size: 11px;
}
.lang a { padding: 5px 9px; color: var(--text-faint); letter-spacing: 0.06em; }
.lang a.on { background: var(--accent-soft); color: var(--accent); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--radius);
  font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
  border: 1px solid var(--line-strong);
  background: transparent; color: var(--text);
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { background: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.3); }
.btn-primary {
  background: var(--accent); border-color: var(--accent); color: #17110c;
}
.btn-primary:hover { background: #eb9a60; border-color: #eb9a60; color: #17110c; }
.btn-block { width: 100%; }
.btn-sm { padding: 7px 13px; font-size: 12px; }

.burger {
  display: none; background: none; border: 1px solid var(--line-strong);
  color: var(--text); border-radius: var(--radius); width: 38px; height: 34px;
  font-size: 15px; line-height: 1; cursor: pointer;
}

/* ---------- hero ---------- */
.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); position: relative; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(760px 300px at 22% -10%, var(--accent-soft), transparent 70%);
}
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 18px;
}
.hero h1 {
  font-size: clamp(30px, 5.2vw, 52px); line-height: 1.08;
  letter-spacing: -0.02em; font-weight: 650; margin: 0 0 18px; max-width: 17ch;
}
.hero p.lead { font-size: clamp(15px, 1.6vw, 18px); color: var(--text-dim); max-width: 58ch; margin: 0 0 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); margin-top: 44px;
}
.stat { padding: 18px 20px 0 0; }
.stat + .stat { border-left: 1px solid var(--line); padding-left: 20px; }
.stat b {
  display: block; font-family: var(--mono); font-size: 20px;
  font-weight: 600; letter-spacing: -0.01em;
}
.stat span { font-size: 11px; color: var(--text-faint); letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- sections ---------- */
section { padding: 56px 0; }
.section-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.section-head h2 {
  font-size: clamp(20px, 2.6vw, 27px); font-weight: 620; letter-spacing: -0.01em; margin: 0;
}
.section-head .sub { color: var(--text-faint); font-size: 13px; }
.section-head a.more { margin-left: auto; font-size: 13px; color: var(--accent); }

/* ---------- product grid ---------- */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card {
  background: var(--bg-card); padding: 20px; display: flex; flex-direction: column;
  min-height: 232px; transition: background 0.15s;
}
.card:hover { background: var(--card-hover); }
.card .brand {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-faint);
}
.card-head { display: flex; align-items: center; gap: 9px; margin-bottom: 14px; }
.logo-tile {
  width: 24px; height: 24px; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--accent);
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  background: var(--bg-raised);
}
.logo-tile img { width: 13px; height: 13px; display: block; filter: var(--logo-filter, none); }
.logo-tile img { filter: invert(1) brightness(0.92); }
.brand-row { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 12px; color: var(--accent); margin-bottom: 10px; }

/* theme switcher */
.card h3 { font-size: 17px; margin: 0 0 6px; font-weight: 600; letter-spacing: -0.01em; }
.card .tier { font-size: 12px; color: var(--accent); font-family: var(--mono); margin-bottom: 14px; }
.card .price { margin-top: auto; display: flex; align-items: baseline; gap: 9px; }
.card .price b { font-family: var(--mono); font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.card .price s { font-family: var(--mono); font-size: 12px; color: var(--text-faint); }
.card .meta {
  display: flex; justify-content: space-between; margin-top: 12px; padding-top: 12px;
  border-top: 1px solid var(--line); font-size: 11px; color: var(--text-faint); font-family: var(--mono);
}
.card .stock-ok { color: var(--ok); }

/* ---------- product page ---------- */
.crumbs { font-family: var(--mono); font-size: 11px; color: var(--text-faint); padding: 22px 0 0; letter-spacing: 0.03em; }
.crumbs a:hover { color: var(--text); }

.product-layout { display: grid; grid-template-columns: 1fr 360px; gap: 48px; padding: 28px 0 16px; align-items: start; }
.product-main h1 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 10px; letter-spacing: -0.02em; font-weight: 640; }
.product-main .lede { font-size: 17px; color: var(--text-dim); margin: 0 0 30px; max-width: 62ch; }

.spec-table { width: 100%; border-collapse: collapse; margin: 0 0 34px; font-size: 14px; }
.spec-table td { padding: 11px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec-table td:first-child { color: var(--text-faint); width: 40%; font-family: var(--mono); font-size: 12px; letter-spacing: 0.03em; }

.feature-list { list-style: none; padding: 0; margin: 0 0 34px; display: grid; gap: 12px; }
.feature-list li { display: flex; gap: 11px; font-size: 14.5px; color: var(--text-dim); }
.feature-list li::before { content: "—"; color: var(--accent); font-family: var(--mono); flex: none; }

.buy-box {
  position: sticky; top: 84px; border: 1px solid var(--line-strong);
  background: var(--bg-raised); padding: 22px; border-radius: var(--radius);
}
.buy-box .price-row { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.buy-box .price-row b { font-family: var(--mono); font-size: 32px; font-weight: 600; letter-spacing: -0.02em; }
.buy-box .price-row s { font-family: var(--mono); font-size: 13px; color: var(--text-faint); }
.buy-box .official { font-size: 12px; color: var(--text-faint); margin-bottom: 20px; }
.buy-box .row {
  display: flex; justify-content: space-between; font-size: 12.5px;
  padding: 9px 0; border-top: 1px solid var(--line); font-family: var(--mono); color: var(--text-dim);
}
.buy-box .row b { color: var(--text); font-weight: 500; }
.buy-box .btn { margin-top: 18px; }
.buy-box .note { font-size: 11px; color: var(--text-faint); margin: 14px 0 0; line-height: 1.5; }

/* ---------- prose ---------- */
.prose { max-width: 720px; font-size: 16px; color: #c9c8c4; }
.prose h2 { font-size: 22px; margin: 38px 0 14px; letter-spacing: -0.01em; color: var(--text); }
.prose h3 { font-size: 17px; margin: 26px 0 10px; color: var(--text); }
.prose p { margin: 0 0 16px; }
.prose ul { margin: 0 0 18px; padding-left: 20px; }
.prose li { margin-bottom: 7px; }
.prose strong { color: var(--text); font-weight: 600; }
.prose a { color: var(--accent); border-bottom: 1px solid rgba(224, 138, 79, 0.35); }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 0 0 22px; }
.prose th { text-align: left; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); padding: 9px 10px 9px 0; border-bottom: 1px solid var(--line-strong); }
.prose td { padding: 10px 10px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: 17px 0; font-size: 15px; font-weight: 550;
  list-style: none; display: flex; gap: 12px; align-items: baseline;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+"; font-family: var(--mono); color: var(--accent); flex: none; }
.faq details[open] summary::before { content: "−"; }
.faq details p { margin: 0 0 18px; color: var(--text-dim); font-size: 14.5px; max-width: 70ch; }

/* ---------- guide list ---------- */
.guide-card { display: block; border: 1px solid var(--line); padding: 22px; background: var(--bg-card); transition: border-color 0.15s, background 0.15s; }
.guide-card:hover { border-color: var(--line-strong); background: var(--card-hover); }
.guide-card .kicker { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.guide-card h3 { font-size: 17px; margin: 10px 0 8px; letter-spacing: -0.01em; }
.guide-card p { font-size: 13.5px; color: var(--text-dim); margin: 0; }

/* ---------- notice / disclaimer ---------- */
.notice {
  border: 1px solid var(--line); border-left: 2px solid var(--accent);
  padding: 14px 16px; font-size: 13px; color: var(--text-dim);
  background: var(--bg-raised); margin: 26px 0;
}

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 40px 0 56px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-faint); margin: 0 0 14px; font-weight: 500; }
.footer-grid a { display: block; font-size: 13px; color: var(--text-dim); padding: 4px 0; }
.footer-grid a:hover { color: var(--text); }
.footer-about p { font-size: 12.5px; color: var(--text-faint); max-width: 42ch; margin: 10px 0 0; line-height: 1.55; }
.copy { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 11px; color: var(--text-faint); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-family: var(--mono); }

/* ---------- mobile ---------- */
@media (max-width: 980px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .product-layout { grid-template-columns: 1fr; gap: 28px; }
  .buy-box { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
  .stat:nth-child(3) { border-left: none; padding-left: 0; }
}

@media (max-width: 720px) {
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column; position: absolute; top: 62px; left: 0; right: 0;
    background: var(--bg-raised); border-bottom: 1px solid var(--line-strong);
    padding: 14px 20px 18px; gap: 4px;
  }
  .nav.open a { padding: 9px 0; font-size: 15px; }
  .burger { display: block; }
  .header-inner { gap: 12px; }
  .hero { padding: 46px 0 40px; }
  section { padding: 40px 0; }
  .grid { grid-template-columns: 1fr; }
  .card { min-height: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .buy-box .price-row b { font-size: 28px; }
}


/* activation panel */
.activate { padding: 10px 0 50px; }
.activate-box {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px;
  border: 1px solid var(--line); background: var(--bg-card);
  padding: 26px; border-radius: var(--radius);
}
.activate-copy h2 { font-size: 19px; margin: 0 0 10px; letter-spacing: -0.01em; }
.activate-copy p { color: var(--text-dim); font-size: 14px; margin: 0 0 14px; max-width: 46ch; }
.activate-copy ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.activate-copy li { font-size: 13px; color: var(--text-faint); display: flex; gap: 9px; }
.activate-copy li::before { content: "—"; color: var(--accent); font-family: var(--mono); }
.activate-form label {
  display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-faint); margin-bottom: 14px;
}
.activate-form input {
  display: block; width: 100%; margin-top: 7px;
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: var(--radius);
  color: var(--text); font-family: var(--mono); font-size: 13px; padding: 10px 12px;
}
.activate-form input:focus { outline: none; border-color: var(--accent); }
.activate-note { font-size: 12px; color: var(--accent); margin: 10px 0 0; min-height: 16px; }
@media (max-width: 860px) { .activate-box { grid-template-columns: 1fr; gap: 22px; } }

/* ---------- activation page ---------- */
.act-hero { padding: 54px 0 30px; max-width: 640px; }
.act-hero h1 { font-size: clamp(28px, 4.4vw, 42px); letter-spacing: -0.02em; margin: 0 0 12px; line-height: 1.1; }
.act-hero .lead { color: var(--text-dim); font-size: 16px; margin: 0; max-width: 54ch; }

.act-shell {
  max-width: 640px; border: 1px solid var(--line-strong);
  background: var(--bg-raised); border-radius: var(--radius);
  padding: 24px; margin-bottom: 46px;
}
.act-steps {
  display: flex; gap: 8px; list-style: none; padding: 0; margin: 0 0 24px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
}
.act-steps li {
  display: flex; align-items: center; gap: 7px; padding: 6px 12px 6px 8px;
  border: 1px solid var(--line); border-radius: 999px; color: var(--text-faint);
  flex: 1; justify-content: center;
}
.act-steps li b {
  width: 17px; height: 17px; border-radius: 50%; display: inline-flex;
  align-items: center; justify-content: center; font-size: 10px;
  border: 1px solid var(--line-strong);
}
.act-steps li.on { color: var(--text); border-color: var(--accent); background: var(--accent-soft); }
.act-steps li.on b { background: var(--accent); color: #17110c; border-color: var(--accent); }
.act-steps li.done { color: var(--text-dim); }

.act-pane label {
  display: block; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-faint); margin-bottom: 8px;
}
.act-pane input {
  width: 100%; background: var(--bg); border: 1px solid var(--line-strong);
  border-radius: var(--radius); color: var(--text); padding: 12px 13px; margin-bottom: 14px;
  font-family: var(--mono); font-size: 14px;
}
.act-pane input:focus { outline: none; border-color: var(--accent); }
.act-inputrow { display: flex; gap: 8px; margin-bottom: 4px; }
.act-inputrow input { margin-bottom: 0; flex: 1; }
.act-inputrow .btn { padding: 0 16px; }

.act-hint { font-size: 12px; color: var(--text-faint); margin: 8px 0 14px; }
.act-err { font-size: 12.5px; color: #e2726e; margin: 0 0 12px; min-height: 16px; }
.act-note { font-size: 11.5px; color: var(--text-faint); margin: 12px 0 0; text-align: center; }

.act-product {
  display: flex; flex-direction: column; gap: 3px; padding: 12px 14px;
  border: 1px solid var(--line); border-left: 2px solid var(--accent);
  background: var(--bg); border-radius: var(--radius); margin-bottom: 18px;
}
.act-product-kicker { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); }
.act-product strong { font-size: 15px; }

.act-status { text-align: center; padding: 6px 0 2px; }
.act-status h2 { font-size: 20px; margin: 14px 0 8px; letter-spacing: -0.01em; }
.act-status > p { color: var(--text-dim); font-size: 14px; margin: 0 auto 20px; max-width: 42ch; }
.act-pulse {
  width: 38px; height: 38px; margin: 0 auto; border-radius: 50%;
  border: 2px solid var(--accent); border-top-color: transparent;
  animation: act-spin 1.1s linear infinite;
}
@keyframes act-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .act-pulse { animation: none; border-top-color: var(--accent); } }

.act-ref {
  display: grid; grid-template-columns: auto 1fr; gap: 8px 16px;
  text-align: left; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; margin: 0 0 20px; background: var(--bg);
}
.act-ref dt { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); align-self: center; }
.act-ref dd { margin: 0; font-family: var(--mono); font-size: 13px; word-break: break-all; }

.act-faq { max-width: 640px; }
.act-faq h2 { font-size: 18px; margin: 0 0 8px; }
@media (max-width: 640px) {
  .act-shell { padding: 18px; }
  .act-steps li { font-size: 10px; padding: 5px 8px; }
}

/* use-case rows */
.usecase-row {
  display: grid; grid-template-columns: 220px 1fr auto; gap: 20px; align-items: center;
  padding: 18px 0; border-top: 1px solid var(--line);
}
.usecase-row:last-of-type { border-bottom: 1px solid var(--line); }
.usecase-pick { display: flex; align-items: center; gap: 11px; }
.usecase-pick strong { display: block; font-size: 15px; }
.usecase-pick span { display: block; font-family: var(--mono); font-size: 11px; color: var(--text-faint); margin-top: 2px; }
.usecase-row p { color: var(--text-dim); font-size: 14px; margin: 0; }
@media (max-width: 860px) {
  .usecase-row { grid-template-columns: 1fr; gap: 10px; }
}

/* accessibility */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: #17110c; padding: 10px 16px;
  font-size: 13px; font-weight: 600; border-radius: 0 0 var(--radius) 0;
}
.skip:focus { left: 0; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.chip {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.04em;
  padding: 6px 12px; border: 1px solid var(--line-strong); border-radius: 999px;
  color: var(--text-dim); transition: border-color 0.15s, color 0.15s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

/* product note */
.note-box {
  border: 1px solid var(--line); border-left: 2px solid var(--accent);
  background: var(--bg-raised); padding: 16px 18px; border-radius: var(--radius);
  margin: 0 0 28px;
}
.note-box h3 {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-faint); margin: 0 0 8px; font-weight: 500;
}
.note-box p { margin: 0; color: var(--text-dim); font-size: 14.5px; max-width: 66ch; }

/* logo mark */
.logo { display: inline-flex; align-items: center; gap: 9px; }
.logo-mark { width: 22px; height: 22px; display: block; flex: none; }

/* status page */
.status-out { margin: 4px 0 14px; }
.status-row {
  display: grid; gap: 6px; padding: 14px 16px; border: 1px solid var(--line);
  border-left: 2px solid var(--accent); background: var(--bg); border-radius: var(--radius);
  margin-bottom: 10px; font-size: 13.5px;
}
.status-row > div { display: flex; justify-content: space-between; gap: 12px; }
.status-k { font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint); }
.status-live { color: var(--accent); }
.status-miss { color: var(--text-dim); }
.usecase-list .usecase-row { grid-template-columns: 240px 1fr 0; }
@media (max-width: 860px) { .usecase-list .usecase-row { grid-template-columns: 1fr; } }