:root {
  --bg: #14161b;
  --panel: #1c2028;
  --ink: #e7e2d6;
  --mute: #9a9488;
  --tally: #d8892a;
  --tally-dim: #8a5a1f;
  --line: rgba(231, 226, 214, 0.14);
  --ok: #7d9b6a;
  --danger: #c46b5a;
  --max: 1120px;
  --sans: "Atkinson Hyperlegible", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Noto Sans", sans-serif;
  --display: "Literata", "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif;
  --mono: "IBM Plex Mono", "SF Mono", ui-monospace, monospace;
  --space-xs: 0.45rem;
  --space-sm: 0.8rem;
  --space-md: 1.25rem;
  --space-lg: 2.2rem;
  --space-xl: 3.6rem;
  --ease: 160ms ease;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

img, svg { display: block; max-width: 100%; height: auto; }

a {
  color: var(--tally);
  text-underline-offset: 0.18em;
}

a:hover { color: #f0b15a; }

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

.skip {
  position: absolute;
  left: 0.8rem;
  top: -3rem;
  background: var(--tally);
  color: #1a1208;
  padding: 0.5rem 0.8rem;
  z-index: 20;
}

.skip:focus { top: 0.8rem; }

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 0.85rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: inherit;
  text-decoration: none;
  min-height: 44px;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex: none;
  box-shadow: 0 0 0 1px rgba(231, 226, 214, 0.12);
}

.brand-name {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.9rem;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav a[aria-current="page"] { color: var(--tally); }

#site-lang {
  min-height: 44px;
  min-width: 9.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  padding: 0 0.6rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(17rem, 0.92fr);
  gap: 2.6rem;
  align-items: end;
  padding: 3.2rem 0 2.4rem;
}

h1 {
  font-family: var(--display);
  font-size: clamp(2.5rem, 7vw, 4.6rem);
  line-height: 0.96;
  font-weight: 650;
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

.lead {
  max-width: 38rem;
  color: var(--mute);
  margin: 0 0 1.35rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.55rem 1.05rem;
  border: 1px solid var(--tally);
  background: var(--tally);
  color: #1a1208;
  text-decoration: none;
  font-weight: 700;
}

.btn:hover { filter: brightness(1.06); color: #1a1208; }

.text-link {
  color: var(--ink);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.fine {
  margin: 0.85rem 0 0;
  color: var(--mute);
  font-size: 0.92rem;
  max-width: 36rem;
}

.session {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1rem 1rem 0.85rem;
}

.session-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mute);
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}

.meter {
  display: flex;
  align-items: end;
  gap: 3px;
  height: 16px;
}

.meter i {
  display: block;
  width: 3px;
  background: var(--ok);
  opacity: 0.85;
}

.meter i:nth-child(1) { height: 28%; }
.meter i:nth-child(2) { height: 62%; }
.meter i:nth-child(3) { height: 44%; }
.meter i:nth-child(4) { height: 90%; }
.meter i:nth-child(5) { height: 36%; }

.line {
  margin: 0 0 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.line strong {
  display: block;
  font-size: 0.78rem;
  color: var(--tally);
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.line p { margin: 0; }

.line.reply {
  border-bottom: 0;
  background: rgba(216, 137, 42, 0.08);
  margin: 0 -1rem -0.85rem;
  padding: 0.85rem 1rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  margin: 0 0 var(--space-xl);
}

.facts div {
  padding: 1rem 1.05rem 1.15rem;
  border-inline-end: 1px solid var(--line);
}

.facts div:last-child { border-inline-end: 0; }

.facts dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--tally);
  margin: 0 0 0.35rem;
}

.facts dd {
  margin: 0;
  color: var(--ink);
}

.pair,
.feat-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.4rem;
  padding: 0 0 var(--space-xl);
}

h2 {
  font-family: var(--display);
  font-size: clamp(1.55rem, 3vw, 2.05rem);
  margin: 0 0 0.7rem;
  letter-spacing: -0.02em;
}

.note,
.pair p,
.feat-row p {
  color: var(--mute);
  margin: 0;
}

.uses {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 0 0 var(--space-xl);
}

.uses article {
  background: var(--bg);
  padding: 1.35rem 1.25rem 1.45rem;
}

.uses .span {
  grid-column: 1 / -1;
  background: var(--panel);
}

.uses h2 { margin-bottom: 0.55rem; }

.uses p { color: var(--mute); margin: 0; }

.how {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2rem;
  padding: 0 0 var(--space-xl);
  align-items: start;
}

.receipt {
  border: 1px solid var(--line);
  padding: 1.1rem 1.15rem 1.2rem;
}

.receipt dt {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--tally);
  margin: 0.85rem 0 0.2rem;
}

.receipt dt:first-child { margin-top: 0; }

.receipt dd {
  margin: 0;
  color: var(--ink);
}

.shots {
  padding: 0 0 var(--space-xl);
}

.rail {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 0.2rem 0 0.6rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.rail figure {
  margin: 0;
  flex: 0 0 210px;
  scroll-snap-align: start;
}

.rail img {
  width: 210px;
  border: 1px solid var(--line);
  background: #0e1014;
}

.rail figcaption {
  margin-top: 0.55rem;
  color: var(--mute);
  font-size: 0.9rem;
}

.faq {
  padding: 0 0 1.2rem;
}

.faq article,
.qa article {
  padding: 1.2rem 0;
  border-top: 1px solid var(--line);
}

.faq article:first-of-type,
.qa article:first-of-type { border-top: 0; }

.faq h3,
.qa h2 {
  font-family: var(--display);
  font-size: 1.28rem;
  margin: 0 0 0.45rem;
}

.faq p,
.qa p { color: var(--mute); margin: 0; }

.consent {
  color: var(--mute);
  padding: 0 0 var(--space-xl);
  max-width: 46rem;
}

.page {
  padding: 2.4rem 0 3.5rem;
}

.doc h1,
.qa h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 0.4rem;
}

.updated {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--mute);
  margin: 0 0 1.6rem;
}

.doc h2 { margin-top: 2rem; }

.doc p,
.qa p { color: var(--mute); }

.doc ul,
.qa ul {
  color: var(--mute);
  padding-inline-start: 1.15rem;
}

.doc li + li,
.qa li + li { margin-top: 0.35rem; }

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.2rem;
  align-items: center;
  margin: 0 0 1.6rem;
}

.need {
  border: 1px solid var(--line);
  padding: 1.1rem 1.15rem;
  margin: 0 0 2rem;
}

.need h2 { margin-bottom: 0.65rem; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem 0 2rem;
  color: var(--mute);
  font-size: 0.92rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.1rem;
  margin-bottom: 0.55rem;
}

.site-footer a { color: var(--ink); text-decoration: none; }

.lang-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-row label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--mute);
}

.noscript-facts {
  max-width: 46rem;
  color: var(--mute);
}

[dir="rtl"] .facts div { border-inline-end: 0; border-inline-start: 1px solid var(--line); }
[dir="rtl"] .facts div:last-child { border-inline-start: 0; }
[dir="rtl"] .rail { flex-direction: row-reverse; }

@media (max-width: 860px) {
  .hero,
  .pair,
  .feat-row,
  .uses,
  .how { grid-template-columns: 1fr; }
  .uses .span { grid-row: auto; }
  .facts { grid-template-columns: 1fr 1fr; }
  .facts div:nth-child(2n) { border-inline-end: 0; }
  .facts div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .hero { padding-top: 2.1rem; }
  .site-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  body { font-size: 1rem; }
  .wrap { width: min(var(--max), calc(100% - 1.25rem)); }
  h1 { font-size: 2.2rem; }
  .facts { grid-template-columns: 1fr; }
  .facts div { border-inline-end: 0; border-bottom: 1px solid var(--line); }
  .facts div:last-child { border-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}

@media print {
  body { background: #fff; color: #222; }
  .site-header,
  .site-footer,
  #site-lang,
  .cta-row,
  .session,
  .shots { display: none; }
  a { color: inherit; }
}