:root {
  --bg: #0a0a0a;
  --bg-soft: #101012;
  --panel: #141416;
  --panel-2: #1a1a1d;
  --border: #232327;
  --border-soft: #1c1c1f;
  --text: #ececec;
  --text-dim: #9a9a9f;
  --text-faint: #6b6b70;
  --accent: #6d7cff;
  --accent-hover: #5b6bf0;
  --accent-soft: rgba(109, 124, 255, 0.14);
  --ok: #34d399;
  --warn: #fbbf24;
  --radius: 16px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; border: none; }

.page { max-width: 1060px; margin: 0 auto; padding: 0 24px 80px; }

/* ---- Nav ---- */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0; border-bottom: 1px solid var(--border-soft);
  margin-bottom: 36px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.01em; }
.nav-brand .x {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-size: 14px; font-weight: 700;
}
.nav-links { display: flex; gap: 22px; font-size: 13.5px; color: var(--text-dim); }
.nav-links a { color: var(--text-dim); }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ---- Hero ---- */
.hero { text-align: center; padding: 44px 0 40px; }
.hero h1 { font-size: 40px; font-weight: 700; letter-spacing: -0.03em; }
.hero p { color: var(--text-dim); font-size: 16px; margin-top: 12px; }
.hero .promise { color: var(--accent); font-weight: 600; }

/* ---- Badges ---- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  border-radius: 20px; padding: 3px 10px;
}
.badge.ok { color: var(--ok); background: rgba(52,211,153,.1); border: 1px solid rgba(52,211,153,.35); }
.badge.info { color: var(--accent); background: var(--accent-soft); border: 1px solid var(--accent); }
.badge.warn { color: var(--warn); background: rgba(251,191,36,.08); border: 1px solid rgba(251,191,36,.35); }

/* ---- Product card ---- */
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.product-grid { display: grid; grid-template-columns: 1.15fr .85fr; }
@media (max-width: 860px) { .product-grid { grid-template-columns: 1fr; } }
.demo-frame { background: var(--bg-soft); border-right: 1px solid var(--border-soft); min-height: 520px; display: flex; flex-direction: column; }
.demo-frame iframe { flex: 1; width: 100%; border: 0; min-height: 480px; }
.demo-tag { padding: 8px 14px; border-bottom: 1px solid var(--border-soft); }
.product-info { padding: 28px; display: flex; flex-direction: column; gap: 14px; }
.product-info h2 { font-size: 24px; font-weight: 650; letter-spacing: -0.02em; }
.product-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.product-desc { color: var(--text-dim); font-size: 14px; }
.spec-list { list-style: none; display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; color: var(--text-dim); }
.spec-list li { display: flex; gap: 10px; }
.spec-list li::before { content: "✓"; color: var(--accent); font-weight: 700; }
.price-row { display: flex; align-items: baseline; gap: 10px; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border-soft); }
.price { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; }
.price-note { color: var(--text-faint); font-size: 12.5px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: #fff;
  font-size: 15px; font-weight: 600;
  border-radius: 12px; padding: 13px 22px;
  transition: background .12s;
}
.btn:hover { background: var(--accent-hover); }
.btn.ghost { background: var(--panel-2); color: var(--text-dim); border: 1px solid var(--border); }
.btn.ghost:hover { color: var(--text); }
.btn.danger-sim { background: var(--panel-2); color: var(--warn); border: 1px solid rgba(251,191,36,.35); }
.btn:disabled { opacity: .45; cursor: default; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---- Panels / summary ---- */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.panel h2 { font-size: 20px; font-weight: 650; margin-bottom: 14px; }
.kv { display: grid; grid-template-columns: 170px 1fr; row-gap: 8px; font-size: 14px; }
.kv dt { color: var(--text-faint); }
.kv dd { color: var(--text); word-break: break-all; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
.notice {
  border: 1px solid rgba(251,191,36,.35); background: rgba(251,191,36,.06);
  color: var(--warn); border-radius: 12px; padding: 12px 16px; font-size: 13px;
  margin: 18px 0;
}
.notice strong { color: var(--warn); }
.status-paid { color: var(--ok); font-weight: 600; }
.status-failed { color: #f87171; font-weight: 600; }
.status-awaiting_payment { color: var(--warn); font-weight: 600; }

/* ---- Steps ---- */
.steps { display: flex; gap: 10px; flex-wrap: wrap; margin: 0 0 28px; }
.step { font-size: 12.5px; color: var(--text-faint); display: flex; align-items: center; gap: 7px; }
.step b { width: 20px; height: 20px; border-radius: 50%; background: var(--panel-2); display: grid; place-items: center; font-size: 11px; color: var(--text-dim); }
.step.done { color: var(--ok); } .step.done b { background: rgba(52,211,153,.12); color: var(--ok); }
.step.now { color: var(--accent); } .step.now b { background: var(--accent-soft); color: var(--accent); }

/* ---- Catalog grid ---- */
.catalog { margin-top: 56px; }
.catalog-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; }
.catalog-head h2 { font-size: 22px; font-weight: 650; letter-spacing: -0.02em; }
.catalog-head span { color: var(--text-faint); font-size: 13px; }
.catalog-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 860px) { .catalog-grid { grid-template-columns: 1fr; } }
.p-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .15s;
}
.p-card:hover { border-color: var(--accent); }
.p-card .kind { font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--text-faint); }
.p-card h3 { font-size: 17px; font-weight: 650; letter-spacing: -0.01em; }
.p-card .tagline { color: var(--text-dim); font-size: 13.5px; flex: 1; }
.p-card .foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 12px; border-top: 1px solid var(--border-soft); }
.p-card .price { font-size: 22px; font-weight: 700; }
.p-card .actions { display: flex; gap: 8px; align-items: center; }
.btn.small { font-size: 13px; padding: 9px 16px; border-radius: 10px; }
.p-card .err { color: var(--warn); font-size: 12px; }
a.p-card.p-link { color: inherit; text-decoration: none; display: flex; }
a.p-card.p-link:hover { text-decoration: none; }
a.p-card.p-link .btn.small { pointer-events: none; }

.footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border-soft); color: var(--text-faint); font-size: 12.5px; text-align: center; }