:root {
  --night: #0E1030;
  --night-2: #181B47;
  --gold: #FFC53D;
  --gold-deep: #E89B00;
  --paper: #F5F6FB;
  --ink: #1A1C3A;
  --muted: #8A8FB8;
  --line: #D9DCEC;
  --danger: #D8364B;
  --ok: #16A36A;
  --display: "Unbounded", system-ui, sans-serif;
  --body: "Manrope", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background:
    radial-gradient(1200px 600px at 85% -10%, #2A2F7A 0%, transparent 60%),
    radial-gradient(900px 500px at -10% 110%, #1D2160 0%, transparent 55%),
    var(--night);
  color: #E9EAF6;
  font: 16px/1.55 var(--body);
  min-height: 100vh;
}
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--gold); outline-offset: 2px;
}
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- header / footer ---------- */
.top, .foot, main { max-width: 1120px; margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.top { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; padding-bottom: 20px; }
.brand { font-family: var(--display); font-weight: 700; font-size: 17px; text-decoration: none; letter-spacing: -.01em; }
.brand-star { color: var(--gold); margin-right: 8px; }
.top-links a { color: var(--muted); text-decoration: none; font-weight: 500; }
.top-links a:hover { color: #fff; }
.foot { color: var(--muted); font-size: 13px; padding-top: 48px; padding-bottom: 32px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; padding: 40px 0 72px; }
h1 {
  font-family: var(--display); font-weight: 700; letter-spacing: -.03em;
  font-size: clamp(34px, 5.4vw, 64px); line-height: 1.02; margin: 0 0 24px;
}
h1 em { font-style: normal; color: var(--gold); }
.lead { font-size: 18px; color: #C5C8E6; max-width: 30em; margin: 0 0 28px; }
.rate { margin: 0; color: var(--muted); }
.rate .mono { color: var(--gold); font-size: 22px; font-weight: 600; margin-right: 6px; }

/* ---------- receipt (signature) ---------- */
.receipt {
  --tooth: 10px;
  position: relative;
  background: var(--paper); color: var(--ink);
  padding: 22px 24px 28px;
  border-radius: 6px 6px 0 0;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .55);
  transform: rotate(.6deg);
  /* зубчатый обрыв снизу, как у кассовой ленты */
  -webkit-mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--tooth) * 2) var(--tooth) repeat-x,
    linear-gradient(#000 0 0) top / 100% calc(100% - var(--tooth) + 1px) no-repeat;
  mask: conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--tooth) * 2) var(--tooth) repeat-x,
    linear-gradient(#000 0 0) top / 100% calc(100% - var(--tooth) + 1px) no-repeat;
}
.receipt-head {
  display: flex; justify-content: space-between;
  font: 600 12px/1 var(--mono); letter-spacing: .14em; color: var(--muted);
  padding-bottom: 16px; margin-bottom: 18px; border-bottom: 1px dashed var(--line);
}
.field { display: block; border: 0; padding: 0; margin: 0 0 18px; }
.field-label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 8px; padding: 0; }
.opt { font-weight: 400; color: var(--muted); }
.hint { display: block; font-size: 12.5px; color: var(--muted); margin-top: 6px; }
input[type=email], .qty, .at-input {
  width: 100%; font: 500 16px var(--body); color: var(--ink);
  background: #fff; border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
}
.at-input { display: flex; align-items: center; gap: 4px; padding: 0 14px; }
.at-input span { color: var(--muted); font-weight: 700; }
.at-input input { flex: 1; border: 0; outline: 0; font: inherit; padding: 12px 0; background: transparent; color: inherit; min-width: 0; }
.at-input:focus-within, input[type=email]:focus, .qty:focus { border-color: var(--ink); outline: none; }
.qty { font-family: var(--mono); margin-top: 10px; }
.chips { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.chip {
  font: 600 14px var(--mono); padding: 9px 0; border-radius: 8px; cursor: pointer;
  border: 1.5px solid var(--line); background: #fff; color: var(--ink);
}
.chip:hover { border-color: var(--ink); }
.chip.is-on { background: var(--ink); border-color: var(--ink); color: var(--gold); }

.tear { height: 1px; margin: 22px -24px 18px; background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 14px); }
.lines { margin: 0 0 18px; font-size: 14px; }
.lines div { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; }
.lines dt { color: var(--muted); }
.lines dd { margin: 0; }
.lines .total { font-size: 22px; font-weight: 600; padding-top: 10px; }
.lines .total dt { color: var(--ink); }
#r-total.tick { animation: tick .35s ease; }
@keyframes tick { from { opacity: .3; transform: translateY(-4px); } }

.agree { display: flex; gap: 8px; align-items: center; font-size: 13.5px; margin-bottom: 14px; }
.agree input { width: 18px; height: 18px; accent-color: var(--ink); }
.error { background: #FDE8EB; color: var(--danger); font-size: 14px; padding: 10px 12px; border-radius: 8px; margin: 0 0 12px; }
.pay {
  display: block; width: 100%; text-align: center; text-decoration: none;
  font: 700 17px var(--display); letter-spacing: -.01em;
  background: var(--gold); color: var(--ink); border: 0; border-radius: 12px; padding: 16px; cursor: pointer;
  box-shadow: inset 0 -3px 0 var(--gold-deep);
}
.pay:hover { filter: brightness(1.05); }
.pay[disabled] { opacity: .6; cursor: progress; }
.pay-note { text-align: center; font-size: 12px; color: var(--muted); margin: 10px 0 0; }

/* ---------- how / faq ---------- */
.how, .faq { padding: 32px 0; border-top: 1px solid #262A5C; }
h2 { font-family: var(--display); font-weight: 500; font-size: 22px; letter-spacing: -.01em; margin: 0 0 24px; }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.steps li { counter-increment: s; display: flex; flex-direction: column; gap: 6px; }
.steps li::before { content: counter(s); font: 600 13px var(--mono); color: var(--gold); }
.steps span { color: #B7BADB; font-size: 15px; }
.faq details { border-bottom: 1px solid #262A5C; padding: 16px 0; max-width: 760px; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; }
.faq summary::after { content: "+"; float: right; color: var(--gold); font-family: var(--mono); }
.faq details[open] summary::after { content: "–"; }
.faq p { color: #B7BADB; margin: 10px 0 0; }

/* ---------- order page ---------- */
.order-wrap { max-width: 440px; margin: 24px auto 0; }
.order-star { font-size: 64px; line-height: 1; text-align: center; color: var(--line); margin: 12px 0; transition: color .4s; }
.order-status { text-align: center; font-weight: 700; font-size: 18px; margin: 0; }
.order[data-status=sending] .order-star { color: var(--gold); animation: pulse 1.4s ease-in-out infinite; }
.order[data-status=done] .order-star { color: var(--gold); }
.order[data-status=done] .order-status { color: var(--ok); }
.order[data-status=canceled] .order-status { color: var(--danger); }
@keyframes pulse { 50% { transform: scale(.88); opacity: .6; } }
.again { display: block; text-align: center; margin-top: 14px; font-size: 14px; color: var(--muted); }

/* ---------- document ---------- */
.doc { max-width: 760px; padding: 24px 0; }
.doc h1 { font-size: 34px; }
.doc h2 { font-size: 17px; margin: 28px 0 8px; }
.doc p { color: #C5C8E6; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 32px; padding-top: 16px; }
  .receipt { transform: none; }
  .steps { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 420px) {
  .chips { grid-template-columns: repeat(3, 1fr); }
  .receipt { padding-left: 18px; padding-right: 18px; }
  .tear { margin-left: -18px; margin-right: -18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}