/* ===== 开云赛场开户 / assets/site.css ===== */

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; }
table { border-collapse: collapse; width: 100%; }

/* ---------- tokens ---------- */
:root {
  --ink-900: #07160F;
  --ink-800: #0C231A;
  --ink-700: #143026;
  --paper-100: #F4EFE2;
  --paper-300: #D9D2BE;
  --lime-400: #C8FF3D;
  --lime-600: #8FCB1E;
  --alert-500: #FF4B2B;
  --alert-300: #FF8A65;
  --chalk: #E9F2EC;
  --steel-600: #2E6E63;
  --muted: rgba(233, 242, 236, .62);
  --hair: rgba(217, 210, 190, .24);
  --hair-soft: rgba(217, 210, 190, .14);

  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1240px;
  --shell-wide: 1440px;
  --bleed: clamp(16px, 4vw, 44px);
  --band: clamp(36px, 6vw, 72px);
  --ratio-figure: 16 / 9;
}

/* ---------- base ---------- */
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--chalk);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 78% at 80% -12%, rgba(200, 255, 61, .10), transparent 62%),
    radial-gradient(90% 62% at -6% 104%, rgba(46, 110, 99, .34), transparent 66%);
  background-repeat: no-repeat;
}
#main-content { scroll-margin-top: 132px; }

h1, h2, h3, h4,
.display {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  line-height: .98;
}
h1 { font-size: clamp(2.6rem, 7vw, 6.4rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.8rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); letter-spacing: .05em; }

.u-mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.u-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.u-muted { color: var(--muted); }
.u-sr {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 3px;
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 120;
  transform: translate(-50%, -140%);
  padding: .62rem 1.05rem;
  background: var(--lime-400);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  transition: transform .18s ease;
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- status dot ---------- */
.dot {
  display: inline-block;
  width: .42em;
  height: .42em;
  border-radius: 50%;
  background: var(--lime-400);
  box-shadow: 0 0 0 4px rgba(200, 255, 61, .16);
  flex: none;
}

/* ---------- masthead ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(7, 22, 15, .99), rgba(7, 22, 15, .93));
  border-bottom: 1px solid var(--hair);
  backdrop-filter: blur(6px);
}
.masthead__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px var(--bleed) 0;
}
.masthead__mast {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  padding-bottom: 14px;
}
.masthead__brand {
  display: flex;
  align-items: center;
  gap: .55em;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .07em;
  line-height: 1;
  font-size: clamp(1.5rem, 4.6vw, 2.9rem);
  color: var(--chalk);
}
.masthead__brandlink { display: inline-block; }
.masthead__brandlink:hover { color: var(--lime-400); }
.masthead__status {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--muted);
}
.masthead__current {
  display: none;
  align-items: center;
  gap: .7em;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--lime-400);
}
.masthead__current-key {
  color: var(--muted);
  letter-spacing: .18em;
}
.masthead__toggle {
  position: absolute;
  top: .15em;
  right: 0;
  display: none;
  align-items: center;
  gap: .55em;
  padding: .42rem .7rem;
  border: 1px solid rgba(217, 210, 190, .42);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--chalk);
  transition: border-color .18s ease, color .18s ease;
}
.masthead__toggle:hover { border-color: var(--lime-400); color: var(--lime-400); }
.masthead__bars {
  position: relative;
  display: block;
  width: 15px;
  height: 10px;
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
}
.masthead__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 4px; top: 50%;
  height: 1px;
  background: currentColor;
}
.masthead__toggle-text { line-height: 1; }

.site-nav {
  border-top: 1px solid var(--hair-soft);
}
.site-nav__list {
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: clamp(14px, 3vw, 36px);
  padding: 0 var(--bleed);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--steel-600) transparent;
}
.site-nav__list::-webkit-scrollbar { height: 4px; }
.site-nav__list::-webkit-scrollbar-thumb { background: var(--steel-600); }
.site-nav__item { flex: none; }
.site-nav__link {
  position: relative;
  display: inline-block;
  white-space: nowrap;
  padding: 13px 2px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .92rem;
  color: rgba(233, 242, 236, .72);
  transition: color .18s ease;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--alert-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s cubic-bezier(.3, .8, .3, 1);
}
.site-nav__link:hover { color: var(--chalk); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--chalk); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.masthead__progress {
  height: 2px;
  width: 100%;
  background: var(--lime-400);
  transform: scaleX(0);
  transform-origin: left center;
}
.masthead[data-scrolled] .masthead__inner { padding-top: 10px; }
.masthead[data-scrolled] .masthead__mast {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px 18px;
  padding-bottom: 10px;
}
.masthead[data-scrolled] .masthead__brand { font-size: clamp(1.05rem, 2.2vw, 1.45rem); }
.masthead[data-scrolled] .masthead__status { display: none; }
.masthead[data-scrolled] .masthead__current { display: flex; }

/* ---------- containers / bands / grid ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--bleed);
}
.container--wide { max-width: var(--shell-wide); }

.band { padding: var(--band) 0; }
.band--ink { background: var(--ink-800); border-top: 1px solid var(--hair-soft); border-bottom: 1px solid var(--hair-soft); }
.band--paper { background: var(--paper-100); color: var(--ink-900); }

.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid--3-9, .grid--4-8, .grid--6-6 { grid-template-columns: 1fr; }

@media (min-width: 900px) {
  .grid--3-9 { grid-template-columns: 3fr 9fr; }
  .grid--4-8 { grid-template-columns: 4fr 8fr; }
  .grid--6-6 { grid-template-columns: 6fr 6fr; }
}

/* ---------- prose ---------- */
.prose {
  max-width: 70ch;
  font-size: 1.02rem;
  line-height: 1.78;
  color: rgba(233, 242, 236, .86);
}
.prose > * + * { margin-top: 1em; }
.prose h2, .prose h3 { margin-top: 1.6em; color: var(--chalk); }
.prose ul { list-style: none; }
.prose li { padding-left: 1.1em; position: relative; }
.prose li::before { content: "—"; position: absolute; left: 0; color: var(--lime-600); }
.band--paper .prose { color: rgba(7, 22, 15, .84); }
.band--paper .prose h2, .band--paper .prose h3 { color: var(--ink-900); }

/* ---------- section head ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 10px clamp(12px, 2vw, 24px);
  padding-bottom: 12px;
  margin-bottom: clamp(18px, 3vw, 30px);
  border-bottom: 1px solid var(--hair);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--lime-400);
  padding-bottom: .3em;
}
.section-head__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(1.4rem, 3.6vw, 2.4rem);
  letter-spacing: .04em;
  line-height: 1;
}
.section-head__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--muted);
}
.band--paper .section-head { border-color: rgba(7, 22, 15, .22); }
.band--paper .section-head__index { color: var(--steel-600); }
.band--paper .section-head__meta { color: rgba(7, 22, 15, .58); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55em;
  padding: .72rem 1.15rem;
  border: 1px solid var(--paper-300);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .09em;
  font-size: .94rem;
  line-height: 1.1;
  color: var(--paper-100);
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn--lime { background: var(--lime-400); border-color: var(--lime-400); color: var(--ink-900); }
.btn--lime:hover { background: var(--lime-600); border-color: var(--lime-600); }
.btn--paper { background: var(--paper-100); border-color: var(--paper-100); color: var(--ink-900); }
.btn--paper:hover { background: var(--paper-300); border-color: var(--paper-300); }
.btn--ghost { background: transparent; border-color: rgba(217, 210, 190, .48); color: var(--chalk); }
.btn--ghost:hover { border-color: var(--lime-400); color: var(--lime-400); }

/* ---------- tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  padding: 3px 7px;
  border: 1px solid var(--paper-300);
  background: rgba(233, 242, 236, .04);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--paper-100);
  white-space: nowrap;
}
.tag--lime { border-color: var(--lime-400); color: var(--lime-400); }
.tag--alert { border-color: var(--alert-500); background: rgba(255, 75, 43, .14); color: var(--alert-300); }
.tag--paper { background: var(--paper-100); border-color: var(--paper-100); color: var(--ink-900); }
.tag--steel { border-color: var(--steel-600); color: rgba(233, 242, 236, .72); }

/* ---------- score ---------- */
.score { display: flex; flex-direction: column; gap: 5px; }
.score__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 7vw, 5.2rem);
  line-height: .9;
  letter-spacing: -.02em;
  color: var(--lime-400);
}
.score__unit { font-family: var(--font-mono); font-size: .8rem; color: var(--muted); }
.score__label {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .86rem;
  color: var(--chalk);
}

/* ---------- index list ---------- */
.index-list { border-top: 1px solid var(--hair); }
.index-list__item {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: 10px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--hair-soft);
  font-size: .95rem;
}
.index-list__idx {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--muted);
}
.band--paper .index-list { border-color: rgba(7, 22, 15, .2); }
.band--paper .index-list__item { border-color: rgba(7, 22, 15, .14); }
.band--paper .index-list__idx { color: rgba(7, 22, 15, .55); }

/* ---------- plate / paper card ---------- */
.plate {
  display: grid;
  gap: 6px;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
  color: var(--ink-900);
}
.plate__no {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: rgba(7, 22, 15, .55);
}
.plate__title {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .04em;
  line-height: 1.05;
  font-size: clamp(1.1rem, 2.2vw, 1.6rem);
  color: var(--ink-900);
}
.plate__body { font-size: .95rem; line-height: 1.7; color: rgba(7, 22, 15, .76); }

.paper-card {
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
  color: var(--ink-900);
}
.paper-card--stack {
  box-shadow: 0 5px 0 -1px rgba(217, 210, 190, .38), 0 10px 0 -2px rgba(217, 210, 190, .2);
}

/* ---------- figure ---------- */
.figure {
  margin: 0;
  border: 1px solid var(--hair);
  background: var(--ink-700);
  overflow: hidden;
}
.figure__frame {
  position: relative;
  aspect-ratio: var(--ratio-figure);
  background: linear-gradient(135deg, var(--ink-700), var(--ink-900) 72%);
  overflow: hidden;
}
.figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(118% 92% at 50% 42%, transparent 44%, rgba(7, 22, 15, .74) 100%);
}
.figure__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.94) contrast(1.02);
}
.figure__cap {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 11px;
  border-top: 1px dashed var(--hair);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--muted);
}
.figure--4x3 { --ratio-figure: 4 / 3; }
.figure--1x1 { --ratio-figure: 1 / 1; }
.figure--21x9 { --ratio-figure: 21 / 9; }

/* ---------- rail (horizontal compare) ---------- */
.rail { position: relative; }
.rail__track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--steel-600) transparent;
}
.rail__track::-webkit-scrollbar { height: 5px; }
.rail__track::-webkit-scrollbar-thumb { background: var(--steel-600); }
.rail__item { flex: 0 0 clamp(240px, 74%, 340px); scroll-snap-align: start; }

/* ---------- filter bar ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.filter-bar__label {
  margin-right: 4px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.filter-btn {
  padding: .42rem .82rem;
  border: 1px solid rgba(217, 210, 190, .36);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .82rem;
  color: rgba(233, 242, 236, .82);
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.filter-btn:hover { border-color: var(--lime-600); color: var(--lime-400); }
.filter-btn[aria-pressed="true"] {
  background: var(--lime-400);
  border-color: var(--lime-400);
  color: var(--ink-900);
}
[data-filter-item].is-filtered { display: none; }

/* ---------- collapse ---------- */
.collapse {
  margin-bottom: 8px;
  border: 1px solid var(--hair-soft);
  background: var(--ink-800);
}
.collapse__head {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 11px 13px;
  text-align: left;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .07em;
  font-size: .95rem;
  color: var(--chalk);
}
.collapse__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--lime-400);
}
.collapse__head[aria-expanded="true"]::after { content: "–"; }
.collapse__head:hover { color: var(--lime-400); }
.collapse__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .22s ease;
}
.collapse.is-open .collapse__panel { max-height: var(--collapse-max, 720px); }
.collapse__panel-inner {
  padding: 0 13px 14px;
  font-size: .94rem;
  color: rgba(233, 242, 236, .82);
}

/* ---------- reveal ---------- */
html.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s ease, transform .5s cubic-bezier(.2, .7, .2, 1);
}
html.has-reveal [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- misc ---------- */
.chalk-rule {
  height: 0;
  margin: clamp(24px, 4vw, 44px) 0;
  border: 0;
  border-top: 1px dashed rgba(233, 242, 236, .28);
}
.band--paper .chalk-rule { border-top-color: rgba(7, 22, 15, .24); }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: .5em;
  margin-bottom: clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.breadcrumbs__item + .breadcrumbs__item::before {
  content: "／";
  margin-right: .5em;
  color: var(--steel-600);
}
.breadcrumbs__item a:hover { color: var(--lime-400); }

/* ---------- footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 10vw, 120px);
  background: var(--ink-800);
  border-top: 1px solid var(--hair);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lime-400), var(--steel-600) 58%, transparent);
}
.site-footer__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(36px, 6vw, 64px) var(--bleed) 28px;
}
.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding-bottom: 22px;
  margin-bottom: clamp(22px, 3.4vw, 36px);
  border-bottom: 1px solid var(--hair-soft);
}
.site-footer__brand {
  display: flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--chalk);
}
.site-footer__note {
  flex: 1 1 260px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--muted);
}
.site-footer__cta { flex: none; }

.site-footer__grid {
  display: grid;
  grid-template-columns: .9fr .9fr .9fr 1.7fr;
  gap: clamp(20px, 3vw, 40px);
}
.site-footer__col { min-width: 0; }
.site-footer__title {
  padding-bottom: .5rem;
  margin-bottom: .85rem;
  border-bottom: 1px solid var(--hair-soft);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lime-600);
}
.site-footer__list { display: grid; gap: .55rem; }
.site-footer__link {
  display: inline-block;
  font-size: .95rem;
  color: rgba(233, 242, 236, .8);
  transition: color .18s ease, transform .18s ease;
}
.site-footer__link::before { content: "— "; color: var(--steel-600); }
.site-footer__link:hover { color: var(--lime-400); transform: translateX(2px); }

.site-footer__plate {
  padding: clamp(15px, 2vw, 22px);
  background: var(--paper-100);
  border: 1px solid var(--paper-300);
  color: var(--ink-900);
  box-shadow: 0 5px 0 -1px rgba(217, 210, 190, .32);
}
.site-footer__plate-no {
  margin-bottom: .7rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(7, 22, 15, .55);
}
.site-footer__plate-list { display: grid; gap: .45rem; }
.site-footer__plate-row {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 10px;
  align-items: baseline;
  font-size: .9rem;
}
.site-footer__plate-row dt {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(7, 22, 15, .55);
}
.site-footer__plate-row dd { color: var(--ink-900); word-break: break-word; }
.site-footer__plate-note {
  margin-top: .85rem;
  padding-top: .7rem;
  border-top: 1px dashed rgba(7, 22, 15, .22);
  font-size: .78rem;
  line-height: 1.65;
  color: rgba(7, 22, 15, .66);
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: 16px;
  border-top: 1px dashed var(--hair);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--muted);
}
.site-footer__legal { color: rgba(233, 242, 236, .72); }
.site-footer__meta { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .site-footer__plate { grid-column: 1 / -1; }
}
@media (max-width: 880px) {
  .masthead__toggle { display: inline-flex; }
  .masthead__mast { align-items: flex-start; text-align: left; padding-right: 96px; }
  .masthead__brand { font-size: clamp(1.35rem, 6vw, 1.9rem); }
  .masthead__status { font-size: .68rem; }
  .masthead__current { display: none !important; }
  .site-nav {
    max-height: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height .24s ease, visibility .24s;
  }
  .site-nav[data-open="true"] {
    max-height: min(70vh, 520px);
    visibility: visible;
    overflow-y: auto;
    background: var(--ink-800);
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-width: none;
    padding: 4px var(--bleed) 14px;
    overflow: visible;
  }
  .site-nav__link {
    display: block;
    padding: 12px 0;
    border-bottom: 1px dashed var(--hair-soft);
    font-size: 1.04rem;
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] { color: var(--lime-400); }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__top { align-items: flex-start; }
  .index-list__item { grid-template-columns: 44px 1fr; }
  .index-list__item > :last-child { grid-column: 2; }
  .rail__item { flex-basis: min(82%, 300px); }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html.has-reveal [data-reveal] { opacity: 1; transform: none; }
  .skip-link { transition: none; }
}