:root {
  --color-bg: #ffffff;
  --color-raise: #f5f5f7;
  --color-text: #17171c;
  --color-muted: #55555f;
  --color-accent: #4338ca;
  --color-accent-deep: #312a9c;
  --color-border: #e3e3e8;
  --font-head: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mark: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --container: 1120px;
  --radius: 0px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.75;
}

.xd-page {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 22px;
}

a { color: var(--color-accent); }
a:hover { color: var(--color-accent-deep); }

img { max-width: 100%; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.22;
  margin: 0 0 18px;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2rem, 5.4vw, 2.9rem); }
h2 { font-size: clamp(1.3rem, 3.4vw, 1.7rem); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 18px; }

.xd-top { padding: 22px 0 18px; }

.xd-top__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 22px;
}

.xd-brand {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--color-text);
  text-decoration: none;
}

.xd-top__mail {
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.xd-open { padding-top: 34px; padding-bottom: 10px; }
.xd-open h1 { max-width: 20ch; }
.xd-open__lead { font-size: 1.1rem; color: var(--color-muted); max-width: 58ch; }

.xd-stamp {
  font-family: var(--font-mark);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  color: var(--color-muted);
  margin: 0;
}

.xd-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding-bottom: 20px;
}

.xd-rail { min-width: 0; }
.xd-rail__inner { padding: 26px 0 8px; }

.xd-rail h2 {
  font-family: var(--font-mark);
  font-size: 0.71rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.xd-rail ol { list-style: none; counter-reset: xdr; margin: 0 0 24px; padding: 0; }
.xd-rail li { counter-increment: xdr; }

.xd-rail li a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  min-height: 44px;
  padding: 8px 0;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.94rem;
  line-height: 1.4;
  border-bottom: 1px solid var(--color-border);
}

.xd-rail li a::before {
  content: counter(xdr, decimal-leading-zero);
  font-family: var(--font-mark);
  font-size: 0.72rem;
  color: var(--color-accent);
  flex: none;
}

.xd-rail li a:hover { color: var(--color-accent); }

.xd-rail__note {
  font-size: 0.88rem;
  color: var(--color-muted);
  line-height: 1.6;
  background: var(--color-raise);
  padding: 16px 18px;
}

.xd-rail__note a { word-break: break-word; font-weight: 600; }

.xd-body { min-width: 0; }
.xd-sec { padding-top: 42px; }
.xd-sec p, .xd-sec li { max-width: 66ch; }
.xd-sec ul, .xd-sec ol { padding-left: 24px; margin: 0 0 18px; }
.xd-sec li { margin-bottom: 10px; }

.xd-note { color: var(--color-muted); font-size: 0.92rem; font-style: italic; max-width: 64ch; }

.xd-game { padding-top: 42px; }

.xd-game__head { display: flex; gap: 16px; align-items: center; margin-bottom: 18px; }
.xd-game__head img { flex: none; border-radius: 22px; }
.xd-game__head h2 { margin: 0 0 2px; }

.xd-game__dev {
  font-family: var(--font-mark);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  color: var(--color-muted);
  margin: 0;
}

.xd-shots { display: grid; grid-template-columns: 1fr; gap: 18px; margin: 6px 0 20px; }
.xd-shots figure { margin: 0; min-width: 0; }
.xd-shots img { display: block; width: 100%; max-width: 350px; height: auto; }
.xd-shots figcaption { font-size: 0.88rem; color: var(--color-muted); padding-top: 9px; line-height: 1.55; }

.xd-facts { margin: 0 0 20px; }
.xd-facts div { display: flex; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--color-border); }
.xd-facts dt { flex: 0 0 40%; font-weight: 600; margin: 0; }
.xd-facts dd { margin: 0; color: var(--color-muted); }

.xd-scroll { overflow-x: auto; margin: 20px 0 12px; }

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 620px;
  font-size: 0.94rem;
  line-height: 1.55;
}

caption { text-align: left; color: var(--color-muted); font-size: 0.9rem; padding-bottom: 12px; }

th, td {
  text-align: left;
  padding: 13px 18px 13px 0;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

thead th {
  font-family: var(--font-mark);
  font-size: 0.69rem;
  text-transform: uppercase;
  letter-spacing: 1.1px;
  color: var(--color-muted);
  font-weight: 600;
}

tbody th { font-weight: 600; }
td.xd-num { text-align: right; font-variant-numeric: tabular-nums; padding-right: 8px; }

.xd-btn {
  display: inline-block;
  min-height: 44px;
  padding: 14px 26px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  background: var(--color-accent);
  color: #ffffff;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease;
}

.xd-btn:hover { background: var(--color-accent-deep); border-color: var(--color-accent-deep); color: #ffffff; }
.xd-btn--line { background: transparent; color: var(--color-accent); }
.xd-btn--line:hover { background: transparent; color: var(--color-accent-deep); }

.xd-go { display: inline-block; font-weight: 600; text-decoration: none; }
.xd-go::after { content: " \2192"; display: inline-block; transition: transform 140ms ease; }
.xd-go:hover { text-decoration: underline; }
.xd-go:hover::after { transform: translateX(4px); }

.xd-mail { padding-top: 42px; }

.xd-mail__addr {
  font-size: clamp(1.2rem, 4.2vw, 1.6rem);
  font-weight: 700;
  word-break: break-word;
  display: inline-block;
  margin-bottom: 10px;
}

.xd-foot {
  margin-top: 64px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.92rem;
}

.xd-foot h2 { font-size: 1rem; color: var(--color-text); }
.xd-foot p { max-width: 68ch; }
.xd-foot__nav { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-wrap: wrap; gap: 0 24px; }
.xd-foot__nav a { display: inline-flex; align-items: center; min-height: 44px; }

.xd-ask {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 40;
  max-width: 580px;
  background: var(--color-raise);
  border: 1px solid var(--color-border);
  padding: 20px 22px;
}

.xd-ask p { font-size: 0.92rem; margin-bottom: 14px; line-height: 1.6; }
.xd-ask__row { display: flex; flex-wrap: wrap; gap: 10px; }
.xd-ask__row .xd-btn { flex: 1 1 160px; text-align: center; }

.xd-doc { padding-top: 34px; padding-bottom: 12px; max-width: 760px; }
.xd-doc h2 { margin-top: 36px; }
.xd-doc p, .xd-doc li { max-width: 68ch; }
.xd-doc ul { padding-left: 24px; }
.xd-doc li { margin-bottom: 10px; }

@media (min-width: 620px) {
  .xd-ask__row .xd-btn { flex: 0 0 auto; }
  .xd-shots { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 900px) {
  .xd-open { padding-top: 58px; }
  .xd-shell { grid-template-columns: 250px 1fr; gap: 56px; }
  .xd-rail__inner { position: sticky; top: 28px; padding: 42px 0; }
  .xd-sec, .xd-game, .xd-mail { padding-top: 56px; }
}

.xd-fix { margin: 26px 0 22px; }
.xd-fix dt { font-family: var(--font-mark); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-accent-deep); margin-top: 20px; }
.xd-fix dd { margin: 6px 0 0; padding-left: 0; color: var(--color-text); }