:root {
  --ink: #1b1b3a;
  --muted: #5b5b7a;
  --primary: #3f3d9c;
  --primary-dark: #2e2c78;
  --accent: #f5b301;
  --bg: #fbfaff;
  --card: #ffffff;
  --line: #e4e2f4;
  --good: #17803d;
  --warn: #9a6700;
  --bad: #b3261e;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

a { color: var(--primary); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---- header ---- */
header.site {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.site .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { font-weight: 800; font-size: 1.35rem; letter-spacing: .12em; color: var(--primary); text-decoration: none; }
.brand span { color: var(--accent); }
nav.site { margin-left: auto; display: flex; gap: 18px; align-items: center; }
nav.site a { text-decoration: none; color: var(--ink); font-weight: 500; }
nav.site a:hover { color: var(--primary); }
nav.site a.btn, nav.site a.btn:hover { color: #fff; }
nav.site a.btn.ghost { color: var(--primary); }

/* ---- buttons ---- */
.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 10px;
  border: 2px solid var(--primary);
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn.ghost { background: transparent; color: var(--primary); }
.btn.ghost:hover { background: #efeefb; }
.btn.big { padding: 14px 26px; font-size: 1.05rem; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; pointer-events: none; }
.btn.small { padding: 6px 12px; font-size: .85rem; border-radius: 8px; }

/* ---- hero ---- */
.hero { padding: 72px 0 56px; text-align: center; background: linear-gradient(180deg, #efeefb 0%, var(--bg) 100%); }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; margin: 0 0 16px; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); max-width: 680px; margin: 0 auto 28px; }
.hero .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero .fine { margin-top: 14px; color: var(--muted); font-size: .9rem; }

/* ---- sections ---- */
section { padding: 56px 0; }
section h2 { font-size: 1.8rem; margin: 0 0 8px; text-align: center; }
section p.sub { text-align: center; color: var(--muted); margin: 0 auto 32px; max-width: 640px; }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }

.steps .num {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent); color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; margin-bottom: 10px;
}

/* ---- pricing ---- */
.toggle { display: flex; gap: 8px; justify-content: center; margin-bottom: 24px; }
.toggle button {
  padding: 8px 18px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card); font: inherit; cursor: pointer;
}
.toggle button[aria-pressed="true"] { background: var(--primary); color: #fff; border-color: var(--primary); }
.price { font-size: 2rem; font-weight: 800; margin: 6px 0; }
.price small { font-size: .9rem; font-weight: 500; color: var(--muted); }
.card.featured { border: 2px solid var(--primary); }
.note { text-align: center; color: var(--muted); font-size: .9rem; margin-top: 18px; }

/* ---- forms ---- */
.form-card { max-width: 440px; margin: 48px auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.form-card h1 { margin: 0 0 4px; font-size: 1.6rem; }
.form-card p.sub { text-align: left; margin: 0 0 20px; }
label { display: block; font-weight: 600; margin: 14px 0 6px; font-size: .95rem; }
input, select {
  width: 100%; padding: 11px 12px; font: inherit;
  border: 1px solid #c9c6e6; border-radius: 9px; background: #fff; color: var(--ink);
}
input:focus, select:focus, button:focus-visible, a:focus-visible { outline: 3px solid #b7b4f0; outline-offset: 1px; }
.hint { color: var(--muted); font-size: .85rem; margin-top: 4px; }
.error { background: #fdecea; color: var(--bad); border: 1px solid #f5c2be; padding: 10px 12px; border-radius: 9px; margin-top: 14px; }
.error[hidden] { display: none; }
.form-card .btn { width: 100%; margin-top: 20px; }
.alt { text-align: center; margin-top: 16px; color: var(--muted); }

/* ---- account page ---- */
.page-title { margin: 32px 0 4px; font-size: 1.8rem; }
.banner { border-radius: var(--radius); padding: 14px 18px; margin: 16px 0; border: 1px solid; }
.banner.good { background: #e9f7ee; border-color: #b9e2c7; color: #0f5a2a; }
.banner.warn { background: #fff6e0; border-color: #f2d98a; color: #6b4a00; }
.banner.bad { background: #fdecea; border-color: #f5c2be; color: #8c1d18; }
.two { display: grid; gap: 18px; grid-template-columns: 1.4fr 1fr; align-items: start; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; } nav.site .hide-sm { display: none; } }
.dl-card h2 { text-align: left; font-size: 1.3rem; margin-bottom: 6px; }
.dl-card ol { padding-left: 20px; color: var(--muted); }
.dl-card li { margin: 6px 0; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
code.id { background: #efeefb; padding: 3px 7px; border-radius: 6px; font-size: .85rem; overflow-wrap: anywhere; }
table.devices { width: 100%; border-collapse: collapse; font-size: .92rem; }
table.devices th, table.devices td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); }
table.devices th { color: var(--muted); font-weight: 600; }
.empty { color: var(--muted); }

footer.site { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: .9rem; text-align: center; margin-top: 40px; }