/* =========================================================
   必一体育 / assets/site.css
   共享外壳 + 通用组件（页面特色样式由页面专属 CSS 承担）
   ========================================================= */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; }
hr { border: 0; }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 2px; }

/* ---------- tokens ---------- */
:root {
  --mountain: #0B2B22;
  --green-2: #123B2E;
  --night: #071A15;
  --paper: #F4F0E4;
  --paper-2: #D9DCCF;
  --char: #14110F;
  --lime: #C8F04A;
  --corner: #FF5C1A;
  --olive: #7E8A5A;
  --mist: #9FB8AC;

  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Consolas, "Courier New", monospace;

  --fs-display: clamp(2.6rem, 7vw, 4.5rem);
  --fs-h1: clamp(2rem, 4.6vw, 3rem);
  --fs-h2: clamp(1.5rem, 3vw, 2rem);
  --fs-h3: clamp(1.1rem, 1.8vw, 1.5rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.9375rem;

  --rail-l: 268px;
  --rail-r: 244px;
  --gut: clamp(1rem, 4vw, 3rem);
  --maxw: 1180px;
  --sp: clamp(2.5rem, 6vw, 5.5rem);

  --bg: var(--mountain);
  --fg: var(--paper);
  --muted: var(--mist);
  --line: rgba(217, 220, 207, 0.22);
  --line-strong: rgba(217, 220, 207, 0.44);
  --card-bg: var(--green-2);
}

/* ---------- base ---------- */
body {
  background-color: var(--bg);
  background-image:
    linear-gradient(rgba(159, 184, 172, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 184, 172, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.75;
  letter-spacing: 0.01em;
}

h1, h2, h3, h4 { font-weight: 800; letter-spacing: -0.02em; line-height: 1.16; color: var(--fg); }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: 0.02em;
}

#main-content { display: block; }

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section { padding-block: var(--sp); position: relative; }
.section--deep { background-color: var(--green-2); }
.section--night { background-color: var(--night); }
.section--paper {
  background-color: var(--paper);
  color: var(--char);
  --fg: var(--char);
  --muted: #5B6A52;
  --line: rgba(20, 17, 15, 0.18);
  --line-strong: rgba(20, 17, 15, 0.36);
  --card-bg: #FFFDF6;
}
.section--paper h1, .section--paper h2, .section--paper h3, .section--paper h4 { color: var(--char); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2.4vw, 1.75rem);
}
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-12 { grid-column: span 12; }

.lift-1 { margin-top: clamp(0.5rem, 2vw, 1.75rem); }
.lift-2 { margin-top: clamp(1rem, 4vw, 3.5rem); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.rule--dashed { background: none; border-top: 1px dashed var(--line-strong); }

/* ---------- type helpers ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--olive);
}
.display {
  font-size: var(--fs-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.02;
}
.h2 { font-size: var(--fs-h2); font-weight: 800; letter-spacing: -0.02em; }
.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.7;
  color: var(--muted);
  max-width: 54ch;
}
.prose { max-width: 68ch; color: var(--muted); }
.prose p + p { margin-top: 1em; }
.prose h2, .prose h3 { color: var(--fg); margin-top: 2rem; margin-bottom: 0.6rem; }
.prose ul { margin-top: 1em; }
.prose li { position: relative; padding-left: 1.5rem; }
.prose li + li { margin-top: 0.4em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.85rem;
  height: 1px;
  background: var(--corner);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(159, 184, 172, 0.14);
  padding: 0.1em 0.35em;
}
.link {
  color: var(--lime);
  border-bottom: 1px solid rgba(200, 240, 74, 0.4);
  transition: color 0.18s ease, border-color 0.18s ease;
}
.link:hover { color: var(--corner); border-bottom-color: var(--corner); }
.section--paper .link { color: #3E6B1F; border-bottom-color: rgba(62, 107, 31, 0.4); }
.section--paper .link:hover { color: var(--corner); border-bottom-color: var(--corner); }

/* ---------- chips / buttons ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  white-space: nowrap;
}
.chip::before { content: ""; width: 6px; height: 6px; background: currentColor; display: block; }
.chip--lime { border-color: var(--lime); color: var(--lime); }
.chip--corner { border-color: var(--corner); color: var(--corner); }
.chip--olive { border-color: var(--olive); color: var(--olive); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.35rem;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--fg);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn::after { content: "→"; font-family: var(--font-mono); font-weight: 600; }
.btn:hover { border-color: var(--lime); color: var(--lime); }
.btn--lime { background: var(--lime); border-color: var(--lime); color: var(--night); }
.btn--lime:hover { background: var(--corner); border-color: var(--corner); color: #fff; }
.btn--ghost { background: transparent; }
.btn--sm { padding: 0.45rem 0.85rem; font-size: 0.82rem; }
.section--paper .btn { color: var(--char); border-color: var(--line-strong); }
.section--paper .btn--lime { color: var(--night); }

/* ---------- chapter ---------- */
.chapter { position: relative; padding-block: var(--sp); }
.chapter-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--corner);
  transition: color 0.3s ease;
}
.chapter[data-active] .chapter-num { color: var(--lime); }
.chapter-title { margin-top: 0.4rem; font-size: var(--fs-h2); font-weight: 800; letter-spacing: -0.02em; }

/* ---------- card / plate / stat ---------- */
.card {
  position: relative;
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--line);
  padding: clamp(1.05rem, 2vw, 1.6rem);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.card:hover { border-color: var(--lime); }
.card__title { margin-top: 0.75rem; font-size: var(--fs-h3); font-weight: 800; letter-spacing: -0.02em; }
.card__text { margin-top: 0.5rem; color: var(--muted); font-size: var(--fs-small); line-height: 1.7; }
.card__meta {
  margin-top: 1rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--olive);
}

.plate {
  position: relative;
  display: grid;
  gap: 0.3rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--line);
  background: var(--card-bg);
}
.plate::before { content: ""; position: absolute; left: 0; top: 0; width: 2px; height: 100%; background: var(--corner); }
.plate__key { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; color: var(--olive); }
.plate__val {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--fg);
}

.stat { display: flex; flex-direction: column; gap: 0.35rem; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}
.section--paper .stat__value { color: #3E6B1F; }
.stat__label { font-size: 0.82rem; letter-spacing: 0.02em; color: var(--muted); }

/* ---------- table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--card-bg); }
.data-table { width: 100%; min-width: 620px; font-size: var(--fs-small); line-height: 1.6; }
.data-table caption {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--olive);
}
.data-table th, .data-table td { padding: 0.7rem 1rem; text-align: left; border-bottom: 1px solid var(--line); }
.data-table thead th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--olive);
  background: rgba(159, 184, 172, 0.09);
  white-space: nowrap;
}
.data-table tbody tr:nth-child(even) { background: rgba(217, 220, 207, 0.05); }
.data-table tbody tr:hover { background: rgba(200, 240, 74, 0.08); }
.data-table tbody tr:last-child th, .data-table tbody tr:last-child td { border-bottom: 0; }
.data-table td.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; }
.data-table td.mark { color: var(--corner); font-weight: 700; }

/* ---------- crumbs ---------- */
.crumbs {
  padding-block: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--olive);
}
.crumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 0.45rem; }
.crumbs li { display: flex; align-items: center; gap: 0.45rem; }
.crumbs li + li::before { content: "/"; color: var(--line-strong); }
.crumbs a { color: var(--muted); transition: color 0.18s ease; }
.crumbs a:hover { color: var(--lime); }

/* ---------- split (半场分屏) ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  background: var(--card-bg);
}
.split__side { padding: clamp(1rem, 2.4vw, 1.8rem); }
.split__side + .split__side { border-left: 1px solid var(--line); }
.split__side:hover { background: rgba(200, 240, 74, 0.06); }

/* ---------- media (图片容器基础规则) ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--night);
  border: 1px solid var(--line);
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media > picture { display: block; width: 100%; height: 100%; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media--board {
  background-image:
    linear-gradient(rgba(159, 184, 172, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 184, 172, 0.16) 1px, transparent 1px);
  background-size: 36px 36px;
  background-color: var(--green-2);
}
.media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.35rem 0.65rem;
  background: rgba(7, 26, 21, 0.88);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  background: var(--night);
  border-bottom: 1px solid var(--line);
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--lime);
  color: var(--night);
  font-weight: 700;
  font-size: 0.9rem;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}
.skip-link:focus { transform: translateY(0); }

/* 品牌轨道 */
.brand-rail {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  min-width: 0;
  background: var(--night);
}
.brand { display: inline-flex; align-items: center; gap: 0.6rem; }
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  background: var(--lime);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color 0.18s ease, color 0.18s ease;
}
.brand:hover .brand__mark { background: var(--corner); color: #fff; }
.brand__name {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
  white-space: nowrap;
}
.brand__tagline {
  display: none;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}
.brand__season {
  display: none;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--olive);
  white-space: nowrap;
}
.rail-ruler { display: none; }

/* 移动端按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 1rem;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--paper-2);
}
.nav-toggle__bar {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--lime);
  transition: background-color 0.2s ease;
}
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: inherit;
  transition: transform 0.2s ease, top 0.2s ease;
}
.nav-toggle__bar::before { top: -6px; }
.nav-toggle__bar::after { top: 6px; }
.nav-toggle.is-open .nav-toggle__bar { background: var(--corner); }
.nav-toggle.is-open .nav-toggle__bar::before { top: 0; transform: rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bar::after { top: 0; transform: rotate(-45deg); }

/* 栏目轨道（移动端为下拉面板） */
.nav-rail {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: 0 1rem;
  background: var(--night);
  border-top: 1px solid var(--line);
  visibility: hidden;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease, padding 0.28s ease, visibility 0.28s ease;
}
.nav-rail[data-open] {
  visibility: visible;
  max-height: min(78vh, 640px);
  padding: 1.1rem 1rem 1.4rem;
  overflow-y: auto;
}
.nav-rail__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--olive);
}
.nav-list { counter-reset: navidx; }
.nav-list li + li { border-top: 1px solid var(--line); }
.nav-list__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.65rem 0.7rem;
  color: var(--paper-2);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: color 0.18s ease, background-color 0.18s ease;
}
.nav-list__link::before {
  counter-increment: navidx;
  content: "0" counter(navidx);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mist);
  transition: color 0.18s ease;
}
.nav-list__link::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  bottom: 0.42rem;
  width: 0;
  height: 1px;
  background: var(--lime);
  transition: width 0.22s ease;
}
.nav-list__link:hover { color: #fff; }
.nav-list__link:hover::before { color: var(--corner); }
.nav-list__link:hover::after { width: calc(100% - 1.4rem); }
.nav-list__link[aria-current="page"] {
  color: #fff;
  background: rgba(200, 240, 74, 0.08);
  box-shadow: inset 3px 0 0 var(--lime);
}
.nav-list__link[aria-current="page"]::before { color: var(--corner); }
.nav-list__link[aria-current="page"]::after { width: calc(100% - 1.4rem); }

.nav-utility {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}
.nav-utility__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--mist);
  transition: color 0.18s ease;
}
.nav-utility__link::before { content: "↗"; color: var(--olive); }
.nav-utility__link:hover { color: var(--lime); }

/* 滚动进度 */
.scroll-progress {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  z-index: 95;
  background: rgba(217, 220, 207, 0.12);
}
.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--night);
  border-top: 1px solid var(--line);
  padding: var(--sp) var(--gut) 0;
  color: var(--paper-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  max-width: var(--maxw);
  margin-inline: auto;
}
.footer-col { min-width: 0; }
.footer-brand {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.footer-line {
  margin-top: 0.6rem;
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 34ch;
}
.footer-col--brand .btn { margin-top: 1.1rem; }
.footer-title {
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--olive);
}
.footer-list { display: flex; flex-direction: column; gap: 0.45rem; }
.footer-list a {
  font-size: 0.92rem;
  color: var(--paper-2);
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.footer-list a:hover { color: var(--lime); border-bottom-color: var(--lime); }
.footer-list--contact { gap: 1rem; }
.footer-list--contact li { display: grid; gap: 0.15rem; justify-items: start; }
.footer-key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--olive);
}
.footer-val { font-size: 0.92rem; color: var(--paper-2); word-break: break-word; }
.copy-btn {
  margin-top: 0.4rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  transition: color 0.18s ease, border-color 0.18s ease;
}
.copy-btn:hover { color: var(--lime); border-color: var(--lime); }
.copy-btn.is-done { color: var(--night); background: var(--lime); border-color: var(--lime); }
.footer-note { font-size: 0.9rem; color: var(--mist); line-height: 1.75; }
.footer-note + .footer-note { margin-top: 0.7rem; }
.footer-note--dim { color: var(--olive); }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.75rem;
  max-width: var(--maxw);
  margin: 2.5rem auto 0;
  padding: 1.25rem 0 1.6rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.footer-legal__links { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-legal a { color: var(--mist); transition: color 0.18s ease; }
.footer-legal a:hover { color: var(--lime); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .col-2, .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-6, .col-7, .col-8, .col-9, .col-10 { grid-column: span 12; }
}
@media (max-width: 600px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-12 { grid-column: span 6; }
  .split { grid-template-columns: 1fr; }
  .split__side + .split__side { border-left: 0; border-top: 1px solid var(--line); }
  .media--16x9 { aspect-ratio: 4 / 3; }
}
@media (min-width: 480px) {
  .brand__tagline { display: block; }
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 860px) {
  .brand__season { display: inline-block; }
}
@media (min-width: 1080px) {
  body { padding-left: var(--rail-l); padding-right: var(--rail-r); }
  html { scroll-padding-top: 1rem; }
  .site-header {
    position: static;
    display: block;
    background: none;
    border-bottom: 0;
  }
  .brand-rail {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 90;
    width: var(--rail-l);
    flex-direction: column;
    align-items: flex-start;
    gap: 1.1rem;
    padding: 2rem 1.5rem 1.75rem;
    background: linear-gradient(180deg, #0D3128 0%, var(--night) 68%);
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }
  .brand__tagline { display: block; white-space: normal; max-width: 20ch; line-height: 1.6; }
  .brand__season { display: inline-block; margin-top: auto; }
  .rail-ruler {
    display: block;
    flex: 1 1 auto;
    width: 16px;
    align-self: flex-end;
    border-left: 1px solid var(--line);
    background-image: repeating-linear-gradient(
      to bottom,
      rgba(159, 184, 172, 0.4) 0 1px,
      transparent 1px 12px
    );
  }
  .nav-toggle { display: none; }
  .nav-rail {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    width: var(--rail-r);
    grid-column: auto;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 2rem 1.25rem 1.75rem;
    background: linear-gradient(180deg, #0D3128 0%, var(--night) 68%);
    border-left: 1px solid var(--line);
    border-top: 0;
    visibility: visible;
    max-height: none;
    overflow-y: auto;
  }
  .nav-rail__label {
    padding-bottom: 0.7rem;
    border-bottom: 1px solid var(--line);
  }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1.25fr 1fr; gap: 2.5rem; }
}

/* =========================================================
   MOTION / PRINT
   ========================================================= */
@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;
  }
}