/* ==========================================================================
   365正真赛场 · 共享样式表 /assets/site.css
   夜间球场控制室 + 技术蓝图网格
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, ul, ol, dl, dt, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; }
table { border-collapse: collapse; }
summary { cursor: pointer; }
hr { border: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  --c-ink: #0B2019;
  --c-turf: #123528;
  --c-grid: #2A4A3E;
  --c-lime: #B8FF3C;
  --c-amber: #FFA23A;
  --c-paper: #F4F1E8;
  --c-black: #0E1512;
  --c-mist: #9BB3A6;
  --c-cyan: #5FD3C4;
  --c-alert: #FF5A4E;

  --line: 1px solid var(--c-grid);
  --line-soft: 1px solid rgba(42, 74, 62, 0.65);

  --wrap: 1240px;
  --pad: clamp(18px, 4.2vw, 48px);
  --gap: clamp(16px, 2.2vw, 30px);
  --sec-y: clamp(52px, 7.5vw, 116px);
  --header-h: 134px;

  --r-sm: 3px;
  --r-md: 6px;
  --r-lg: 10px;

  --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --t-fast: 0.16s;
  --t: 0.28s;
  --t-slow: 0.6s;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100%;
  background-color: var(--c-ink);
  background-image:
    radial-gradient(120% 70% at 50% -12%, rgba(95, 211, 196, 0.11), transparent 62%),
    linear-gradient(rgba(42, 74, 62, 0.42) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 74, 62, 0.42) 1px, transparent 1px);
  background-size: 100% 100%, 88px 88px, 88px 88px;
  color: var(--c-paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--c-paper);
  text-wrap: balance;
}
h1 { font-size: clamp(2.4rem, 6.4vw, 5rem); line-height: 1.02; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: clamp(1.12rem, 1.7vw, 1.36rem); letter-spacing: 0; }
h4 { font-size: 1rem; letter-spacing: 0.02em; }

p { text-wrap: pretty; }

::selection { background: var(--c-lime); color: #08231A; }

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

[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

.num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--c-amber);
  letter-spacing: -0.01em;
}

/* ---------- 4. Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.section { position: relative; padding-block: var(--sec-y); }
.section--tight { padding-block: clamp(34px, 4.6vw, 64px); }
.section--turf {
  background: linear-gradient(180deg, rgba(18, 53, 40, 0.92), rgba(18, 53, 40, 0.45));
  border-block: var(--line);
}
.section--paper { background: var(--c-paper); color: var(--c-black); }
.section--paper h2, .section--paper h3 { color: var(--c-black); }
.section--paper .lede { color: #3E4C45; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-12 { grid-column: span 12; }

.rule { height: 1px; background: linear-gradient(90deg, var(--c-grid), rgba(42, 74, 62, 0)); }
.coord {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(155, 179, 166, 0.66);
}

/* ---------- 5. Typography helpers ---------- */
.display {
  font-size: clamp(2.6rem, 8.4vw, 6.6rem);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.03em;
}
.ghost-text {
  color: transparent;
  -webkit-text-stroke: 1px rgba(155, 179, 166, 0.45);
  font-weight: 900;
  letter-spacing: 0.02em;
}
.kicker {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.3em;
  color: var(--c-cyan);
}
.lede {
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 72ch;
}

/* ---------- 6. Section head ---------- */
.sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 20px;
  align-items: end;
  padding-bottom: 16px;
  margin-bottom: clamp(22px, 3.2vw, 44px);
  border-bottom: var(--line);
}
.sec-num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-amber);
  border: 1px solid var(--c-amber);
  border-radius: var(--r-sm);
  padding: 3px 8px;
  line-height: 1.5;
}
.sec-head__text { display: flex; flex-direction: column; gap: 6px; min-width: 0; }

/* ---------- 7. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: transform var(--t) var(--ease), background var(--t) var(--ease),
    color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.btn--lime { background: var(--c-lime); color: #08231A; border-color: var(--c-lime); }
.btn--lime:hover { background: #CDFF6B; transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--c-paper); border-color: var(--c-grid); }
.btn--ghost:hover { border-color: var(--c-lime); color: var(--c-lime); transform: translateY(-2px); }
.btn--amber { background: transparent; color: var(--c-amber); border-color: var(--c-amber); }
.btn--amber:hover { background: rgba(255, 162, 58, 0.14); transform: translateY(-2px); }
.btn--sm { padding: 10px 16px; font-size: 13px; }
.btn--block { width: 100%; }

/* ---------- 8. Header ---------- */
.skip-link {
  position: absolute;
  left: 50%;
  top: -120px;
  transform: translateX(-50%);
  z-index: 200;
  background: var(--c-lime);
  color: #08231A;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 10px 20px;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  transition: top var(--t) var(--ease);
}
.skip-link:focus { top: 0; }
.skip-link:focus-visible { outline-offset: -2px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 32, 25, 0.95);
  border-bottom: 1px solid var(--c-grid);
  transition: background var(--t) var(--ease);
}
@supports (backdrop-filter: blur(10px)) {
  .site-header { backdrop-filter: blur(10px) saturate(140%); background: rgba(11, 32, 25, 0.86); }
}

.masthead {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 14px var(--pad) 0;
}
.masthead__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
  transition: padding var(--t) var(--ease);
}
.masthead__side { display: flex; align-items: center; gap: 12px; min-width: 0; }
.masthead__side--end { justify-content: flex-end; }
.masthead__brand { display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; min-width: 0; }

.ver-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-mist);
  border: var(--line);
  border-radius: 2px;
  padding: 5px 9px;
  white-space: nowrap;
}
.ver-chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-lime);
  box-shadow: 0 0 0 3px rgba(184, 255, 60, 0.16);
}

.brand { display: inline-flex; align-items: baseline; gap: 10px; }
.brand__mark {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.02em;
  color: #08231A;
  background: var(--c-lime);
  padding: 3px 7px;
  border-radius: 2px;
  line-height: 1.3;
}
.brand__name {
  font-size: clamp(1.5rem, 3.3vw, 2.3rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--c-paper);
  transition: font-size var(--t) var(--ease), color var(--t) var(--ease);
}
.brand:hover .brand__name { color: var(--c-lime); }
.brand__line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--c-mist);
  max-height: 26px;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--t) var(--ease), max-height var(--t) var(--ease);
}

.mainnav { border-top: var(--line); }
.mainnav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(10px, 2.4vw, 34px);
  padding: 2px 0 10px;
}
.mainnav__link {
  position: relative;
  display: inline-block;
  padding: 10px 2px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--c-mist);
  transition: color var(--t) var(--ease);
}
.mainnav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 2px;
  background: var(--c-lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t) var(--ease);
}
.mainnav__link:hover { color: var(--c-paper); }
.mainnav__link:hover::after { transform: scaleX(0.45); }
.mainnav__link[aria-current="page"] { color: var(--c-lime); }
.mainnav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: var(--line);
  border-radius: var(--r-sm);
  color: var(--c-paper);
  cursor: pointer;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}
.nav-toggle:hover { border-color: var(--c-lime); color: var(--c-lime); }
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 4px; width: 16px; }
.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle__label { font-size: 12px; letter-spacing: 0.14em; white-space: nowrap; }

.scroll-progress {
  position: relative;
  height: 2px;
  overflow: hidden;
  background: rgba(42, 74, 62, 0.6);
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-lime), var(--c-amber));
  transition: width 0.12s linear;
}

/* 收窄态 */
.site-header.is-condensed .masthead { padding-top: 8px; }
.site-header.is-condensed .masthead__grid { padding-bottom: 6px; }
.site-header.is-condensed .brand__name { font-size: clamp(1.15rem, 2vw, 1.5rem); }
.site-header.is-condensed .brand__line { opacity: 0; max-height: 0; }
.site-header.is-condensed .mainnav__list { padding-bottom: 6px; }

/* ---------- 9. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(44px, 6.5vw, 92px);
  background: linear-gradient(180deg, rgba(18, 53, 40, 0.6), rgba(11, 32, 25, 1));
  border-top: 1px solid var(--c-grid);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-lime), transparent);
  opacity: 0.55;
}

.foot-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: clamp(30px, 4vw, 54px) 22px;
  border-bottom: var(--line);
}
.foot-brand { display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px; }
.foot-brand .brand__mark { font-size: 13px; }
.foot-brand .brand__name { font-size: clamp(1.35rem, 2.4vw, 1.85rem); }
.foot-brand__sub {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--c-mist);
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border: var(--line);
  border-radius: var(--r-sm);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-paper);
  cursor: pointer;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease),
    transform var(--t) var(--ease);
}
.to-top:hover { border-color: var(--c-lime); color: var(--c-lime); transform: translateY(-2px); }
.to-top__arrow { font-family: var(--font-mono); color: var(--c-lime); }

.foot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap);
  padding-block: clamp(34px, 4.4vw, 62px);
}
.foot-col { min-width: 0; }
.foot-col__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--c-amber);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: var(--line-soft);
}
.foot-list { display: flex; flex-direction: column; gap: 10px; font-size: 13.5px; color: var(--c-mist); }
.foot-list a { color: var(--c-mist); transition: color var(--t) var(--ease); }
.foot-list a:hover { color: var(--c-lime); }

.foot-list--kv li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(42, 74, 62, 0.6);
}
.foot-k { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; color: var(--c-mist); padding-top: 2px; }
.foot-v { color: var(--c-paper); font-size: 13.5px; word-break: break-word; line-height: 1.6; }

.copy-btn {
  border: var(--line);
  border-radius: 2px;
  color: var(--c-mist);
  font-size: 11px;
  letter-spacing: 0.12em;
  padding: 3px 8px;
  cursor: pointer;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease),
    background var(--t) var(--ease);
}
.copy-btn:hover { border-color: var(--c-lime); color: var(--c-lime); }
.copy-btn.is-done { border-color: var(--c-lime); color: var(--c-lime); background: rgba(184, 255, 60, 0.14); }

.foot-note {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(155, 179, 166, 0.85);
}

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 20px 28px;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}
.foot-legal { color: var(--c-mist); }
.foot-sign { color: var(--c-mist); }
.foot-sign [data-year] { color: var(--c-amber); }

/* ---------- 10. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-mist);
}
.breadcrumb a { transition: color var(--t) var(--ease); }
.breadcrumb a:hover { color: var(--c-lime); }
.breadcrumb__sep { color: var(--c-grid); }
.breadcrumb [aria-current="page"] { color: var(--c-paper); }

/* ---------- 11. Side rail ---------- */
.rail {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-self: start;
}
.rail__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.28em;
  color: rgba(155, 179, 166, 0.7);
  margin-bottom: 10px;
}
.rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0 7px 12px;
  font-size: 13px;
  color: var(--c-mist);
  border-left: 2px solid rgba(42, 74, 62, 0.85);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease),
    background var(--t) var(--ease);
}
.rail__link:hover { color: var(--c-paper); border-left-color: var(--c-cyan); }
.rail__link.is-current,
.rail__link[aria-current="true"] {
  color: var(--c-lime);
  border-left-color: var(--c-lime);
  background: linear-gradient(90deg, rgba(184, 255, 60, 0.12), transparent 72%);
}
.rail__num { font-family: var(--font-mono); font-size: 11px; color: var(--c-amber); }

/* ---------- 12. Panels / tags ---------- */
.panel {
  position: relative;
  border: var(--line);
  border-radius: var(--r-md);
  padding: clamp(18px, 2.2vw, 30px);
  background: linear-gradient(180deg, rgba(18, 53, 40, 0.86), rgba(18, 53, 40, 0.5));
}
.panel--turf { background: linear-gradient(180deg, rgba(18, 53, 40, 0.96), rgba(11, 32, 25, 0.9)); }
.panel--paper {
  background: var(--c-paper);
  color: var(--c-black);
  border-color: rgba(14, 21, 18, 0.16);
}
.panel--paper h2, .panel--paper h3, .panel--paper h4 { color: var(--c-black); }
.panel--paper .lede { color: #3E4C45; }
.panel--paper .stat__label { color: #55635B; }
.panel__tag {
  position: absolute;
  top: -1px;
  left: -1px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: #08231A;
  background: var(--c-lime);
  padding: 3px 9px;
  border-radius: var(--r-md) 0 var(--r-sm) 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.5;
  padding: 4px 9px;
  border: var(--line);
  border-radius: 2px;
  color: var(--c-mist);
  background: rgba(244, 241, 232, 0.03);
}
.tag--lime { border-color: var(--c-lime); color: var(--c-lime); }
.tag--amber { border-color: var(--c-amber); color: var(--c-amber); }
.tag--cyan { border-color: var(--c-cyan); color: var(--c-cyan); }
.tag--paper { background: var(--c-paper); color: var(--c-black); border-color: transparent; }

/* ---------- 13. Stats ---------- */
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-amber);
}
.stat__label { font-size: 12.5px; letter-spacing: 0.12em; color: var(--c-mist); }

/* ---------- 14. Media containers ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: var(--line);
  border-radius: var(--r-sm);
  background:
    radial-gradient(120% 100% at 18% 0%, rgba(95, 211, 196, 0.16), transparent 58%),
    linear-gradient(160deg, #14382A, #0C231B);
}
.media--4x3 { aspect-ratio: 4 / 3; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media > img, .media > video { width: 100%; height: 100%; object-fit: cover; }
.media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 22px 12px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-paper);
  background: linear-gradient(0deg, rgba(11, 32, 25, 0.94), rgba(11, 32, 25, 0));
}
.media__chip { position: absolute; top: 10px; left: 10px; }

/* ---------- 15. Prose ---------- */
.prose {
  max-width: 76ch;
  font-size: 16px;
  line-height: 1.85;
  color: #D6E2DA;
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2.2em; font-size: clamp(1.4rem, 2.3vw, 1.9rem); }
.prose h3 { margin-top: 1.8em; }
.prose a { color: var(--c-lime); border-bottom: 1px solid rgba(184, 255, 60, 0.4); }
.prose strong { color: var(--c-paper); font-weight: 800; }
.prose li { position: relative; padding-left: 20px; }
.prose li + li { margin-top: 0.5em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.86em;
  width: 9px;
  height: 1px;
  background: var(--c-cyan);
}
.prose blockquote {
  border-left: 3px solid var(--c-lime);
  padding: 6px 0 6px 18px;
  color: var(--c-mist);
}

/* ---------- 16. Tables ---------- */
.table-wrap {
  overflow-x: auto;
  border: var(--line);
  border-radius: var(--r-sm);
  background: rgba(11, 32, 25, 0.4);
}
.table { width: 100%; min-width: 640px; font-size: 14.5px; }
.table th, .table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(42, 74, 62, 0.7);
  vertical-align: top;
}
.table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-amber);
  background: rgba(18, 53, 40, 0.8);
  white-space: nowrap;
}
.table tbody tr:hover { background: rgba(184, 255, 60, 0.05); }
.table tbody tr:last-child th, .table tbody tr:last-child td { border-bottom: 0; }
.table td.is-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--c-paper);
  white-space: nowrap;
}

/* ---------- 17. Accordion ---------- */
.acc { border-bottom: var(--line); }
.acc__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 800;
  color: var(--c-paper);
  list-style: none;
}
.acc__sum::-webkit-details-marker { display: none; }
.acc__sum::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-lime);
  transition: transform var(--t) var(--ease);
}
.acc[open] .acc__sum::after { transform: rotate(45deg); }
.acc__body { padding: 0 4px 22px; max-width: 76ch; color: var(--c-mist); }

/* ---------- 18. Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 19. Responsive: tablet ---------- */
@media (max-width: 1024px) {
  :root { --header-h: 118px; }
  .span-3, .span-4, .span-5 { grid-column: span 6; }
  .span-7, .span-8, .span-9, .span-10 { grid-column: span 12; }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 20. Responsive: mobile nav & header ---------- */
@media (max-width: 900px) {
  :root { --header-h: 96px; }

  .masthead__grid { grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; }
  .masthead__brand { align-items: flex-start; text-align: left; }
  .brand__line { display: none; }
  .nav-toggle { display: inline-flex; }

  .mainnav {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    border-top-color: transparent;
    transition: max-height 0.34s var(--ease), opacity 0.24s var(--ease);
  }
  .mainnav[data-open] {
    max-height: min(72vh, 520px);
    opacity: 1;
    overflow-y: auto;
    border-top-color: var(--c-grid);
  }
  .mainnav__list { flex-direction: column; gap: 0; padding: 6px 0 14px; }
  .mainnav__link {
    display: block;
    padding: 14px 2px;
    border-bottom: 1px solid rgba(42, 74, 62, 0.6);
  }
  .mainnav__link::after { display: none; }
  .mainnav__link[aria-current="page"] {
    padding-left: 14px;
    background: linear-gradient(90deg, rgba(184, 255, 60, 0.12), transparent 78%);
  }
  .mainnav__link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 2px;
    height: 16px;
    margin-top: -8px;
    background: var(--c-lime);
  }

  .rail { position: static; top: auto; }
}

@media (max-width: 720px) {
  .grid-12 { grid-template-columns: minmax(0, 1fr); }
  .span-2, .span-3, .span-4, .span-5, .span-6, .span-7,
  .span-8, .span-9, .span-10, .span-12 { grid-column: 1 / -1; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .sec-head { grid-template-columns: auto minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .masthead__grid { grid-template-columns: minmax(0, 1fr) auto; }
  .masthead__side--start { display: none; }
  .cta-head { display: none; }
  .foot-top { flex-direction: column; align-items: flex-start; }
  .foot-bottom { flex-direction: column; align-items: flex-start; }
  .foot-brand__sub { display: block; }
}

/* ---------- 21. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .btn:hover, .to-top:hover { transform: none; }
}