/* ==========================================================================
   杏运赛场 XINGYUN ARENA — 共享样式 /assets/site.css
   顺序：reset → 变量 → 排版 → 通用组件 → 头部 → 页脚 → 图像容器 → 响应式
   ========================================================================== */

/* 1. RESET ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, hr { margin: 0; }

ol, ul { padding: 0; list-style: none; }

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; width: 100%; }

/* 2. 变量 ---------------------------------------------------------------- */
:root {
  --apricot: #F29A2E;
  --indigo: #16204A;
  --paper: #F7F0E4;
  --ink: #171412;
  --lime: #B7F34A;
  --amber: #E8A317;
  --emerald: #2BB673;
  --mist: #D8E0EA;
  --label: #EFE1C9;
  --coral: #E4572E;
  --card: #FFFBF3;

  --ink-soft: rgba(23, 20, 18, .72);
  --ink-line: rgba(23, 20, 18, .16);
  --paper-soft: rgba(247, 240, 228, .76);
  --indigo-line: rgba(247, 240, 228, .20);

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

  --rail-w: 240px;
  --shell-max: 1280px;
  --gutter: clamp(18px, 3.4vw, 54px);
  --radius-card: 20px;
  --radius-pill: 999px;
  --shadow-print: 6px 6px 0 rgba(22, 32, 74, .13);
  --shadow-print-sm: 3px 3px 0 rgba(23, 20, 18, .85);
}

/* 3. 基础排版 ------------------------------------------------------------- */
body {
  min-height: 100vh;
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, rgba(22, 32, 74, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 32, 74, .05) 1px, transparent 1px);
  background-size: 92px 92px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: clamp(16px, 1.02vw, 17.5px);
  line-height: 1.75;
  letter-spacing: .01em;
}

h1, h2, h3, h4, h5, h6 { font-weight: 900; line-height: 1.16; letter-spacing: -.02em; }

strong, b { font-weight: 800; }

code, kbd, samp { font-family: var(--font-mono); font-size: .92em; }

:focus-visible { outline: 3px solid var(--apricot); outline-offset: 3px; border-radius: 4px; }

.brand-rail :focus-visible,
.site-footer :focus-visible { outline-color: var(--lime); }

#main-content { scroll-margin-top: 132px; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: 14px;
  top: -120px;
  z-index: 200;
  padding: 11px 20px;
  border-radius: var(--radius-pill);
  background: var(--indigo);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  border: 1.5px solid var(--lime);
  transition: top .2s ease;
}

.skip-link:focus { top: 14px; }

/* 4. 通用组件 ------------------------------------------------------------- */
.display {
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 6.4rem);
  line-height: .94;
  letter-spacing: -.03em;
  transform: skewY(-1.2deg);
  transform-origin: left bottom;
}

.display--sm { font-size: clamp(1.8rem, 3.6vw, 3rem); transform: none; letter-spacing: -.02em; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--apricot);
}

.kicker::before { content: ""; width: 9px; height: 9px; background: var(--apricot); }

.lede {
  max-width: 62ch;
  font-size: clamp(1.02rem, 1.2vw, 1.15rem);
  line-height: 1.85;
  color: var(--ink-soft);
}

.prose { max-width: 70ch; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: clamp(1.35rem, 2.2vw, 1.85rem); margin-top: 1.8em; }
.prose h3 { font-size: clamp(1.1rem, 1.6vw, 1.35rem); margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.35em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .45em; }
.prose a { border-bottom: 1.5px solid var(--apricot); }
.prose code { background: var(--label); padding: 2px 6px; border-radius: 6px; }

.page-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(26px, 4vw, 58px) var(--gutter) clamp(60px, 8vw, 110px);
}

.section { padding-block: clamp(30px, 4.4vw, 66px); border-top: 1px dashed var(--ink-line); }
.section:first-of-type { border-top: 0; padding-top: clamp(10px, 2vw, 24px); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 26px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.section__title { font-size: clamp(1.45rem, 2.6vw, 2.3rem); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 30px);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .02em;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, color .18s ease;
}

.btn:hover { transform: translate(-2px, -2px); }
.btn:active { transform: translate(0, 0); }

.btn--cue { background: var(--apricot); box-shadow: var(--shadow-print-sm); }
.btn--cue:hover { box-shadow: 5px 5px 0 rgba(23, 20, 18, .9); }

.btn--solid { background: var(--indigo); color: var(--paper); border-color: var(--indigo); box-shadow: 4px 4px 0 rgba(242, 154, 46, .9); }

.btn--lime { background: var(--lime); }

.btn--ghost { background: transparent; }

/* 标签与状态 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  line-height: 1.6;
}

.tag--apricot { color: #8A4E05; background: rgba(242, 154, 46, .2); border-color: rgba(242, 154, 46, .8); }
.tag--indigo { color: var(--indigo); background: rgba(22, 32, 74, .08); border-color: rgba(22, 32, 74, .45); }
.tag--lime { color: #25401A; background: rgba(183, 243, 74, .45); border-color: rgba(120, 170, 30, .8); }
.tag--amber { color: #6B4600; background: rgba(232, 163, 23, .22); border-color: var(--amber); }
.tag--emerald { color: #0F5233; background: rgba(43, 182, 115, .18); border-color: var(--emerald); }
.tag--coral { color: #7E2409; background: rgba(228, 87, 46, .18); border-color: var(--coral); }

.status-lamp {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 0 3px rgba(43, 182, 115, .2);
}

.status-lamp--live { background: var(--lime); box-shadow: 0 0 0 3px rgba(183, 243, 74, .22); animation: lamp-live 2.6s ease-in-out infinite; }
.status-lamp--warn { background: var(--amber); box-shadow: 0 0 0 3px rgba(232, 163, 23, .25); animation: lamp-warn .8s ease-in-out 2; }
.status-lamp--ok { background: var(--emerald); }

@keyframes lamp-live { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes lamp-warn { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--indigo);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.status-chip--live { background: var(--indigo); color: var(--lime); }
.status-chip--warn { background: rgba(232, 163, 23, .2); border-color: var(--amber); color: #6B4600; }
.status-chip--ok { background: var(--emerald); border-color: var(--emerald); color: #FFFFFF; }
.status-chip--ok .status-lamp { background: var(--paper); box-shadow: none; }

/* 卡片 */
.paper-card {
  position: relative;
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-print);
  padding: clamp(18px, 2.2vw, 28px);
}

.paper-card--flat { box-shadow: none; }

.paper-card--stack::after {
  content: "";
  position: absolute;
  inset: 10px -9px -9px 10px;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-card);
  background: var(--label);
  z-index: -1;
}

.note-card {
  padding: 16px 20px;
  border-left: 5px solid var(--apricot);
  border-radius: 6px 16px 16px 6px;
  background: var(--label);
  color: var(--ink);
  font-size: 15px;
}

.note-card--warn { border-left-color: var(--amber); background: rgba(232, 163, 23, .16); }
.note-card--ok { border-left-color: var(--emerald); background: rgba(43, 182, 115, .14); }

.alert-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: 16px 22px;
  border: 1.5px solid var(--ink);
  border-radius: 16px;
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.alert-banner--warn { background: rgba(232, 163, 23, .24); border-color: var(--amber); }
.alert-banner--ok { background: rgba(43, 182, 115, .18); border-color: var(--emerald); }

/* 数据组件 */
.log-panel {
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: 18px;
  overflow: hidden;
}

.log-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 16px;
  background: var(--indigo);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.log-line {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 10px 16px;
  border-bottom: 1px dashed var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
}

.log-line:last-child { border-bottom: 0; }
.log-line__time { color: var(--ink-soft); letter-spacing: .06em; }
.log-line__code { color: var(--indigo); font-weight: 700; }
.log-line__text { color: var(--ink-soft); }
.log-line--alert { background: rgba(232, 163, 23, .15); border-left: 4px solid var(--amber); }
.log-line--ok { background: rgba(43, 182, 115, .12); border-left: 4px solid var(--emerald); }

.scoreboard {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  background: var(--indigo);
  border: 1.5px solid var(--ink);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-print);
}

.scoreboard__cell { padding: clamp(14px, 2vw, 24px); border-right: 1px solid var(--indigo-line); }
.scoreboard__cell:last-child { border-right: 0; }
.scoreboard__value { display: block; font-family: var(--font-mono); font-weight: 700; font-size: clamp(1.5rem, 3vw, 2.4rem); color: var(--lime); }
.scoreboard__label { display: block; font-family: var(--font-mono); font-size: 12px; letter-spacing: .16em; color: var(--paper-soft); }

.stat { display: grid; gap: 6px; }
.stat__value { font-family: var(--font-mono); font-weight: 700; font-size: clamp(1.35rem, 2.6vw, 2rem); color: var(--indigo); }
.stat__label { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-soft); }

/* 结构件 */
.breadcrumb {
  margin-bottom: clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink-soft);
}

.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb__item + .breadcrumb__item::before { content: "/"; margin-right: 8px; color: var(--apricot); }
.breadcrumb__link { border-bottom: 1px dashed var(--ink-line); }
.breadcrumb__link:hover { color: var(--apricot); border-color: var(--apricot); }
.breadcrumb__current { color: var(--ink); font-weight: 700; }

.divider-rule {
  position: relative;
  height: 1px;
  margin-block: clamp(24px, 4vw, 46px);
  border: 0;
  background: repeating-linear-gradient(90deg, var(--ink-line) 0 8px, transparent 8px 16px);
}

.divider-rule::after {
  content: "";
  position: absolute;
  left: 0;
  top: -4px;
  width: 9px;
  height: 9px;
  background: var(--apricot);
}

/* 展开组与交互 */
.accordion {
  margin-bottom: 14px;
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: 18px;
  overflow: hidden;
}

.accordion__trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  text-align: left;
  font-size: 16px;
  font-weight: 800;
  background: var(--card);
  transition: background-color .18s ease;
}

.accordion__trigger::after { content: "+"; font-family: var(--font-mono); font-size: 20px; line-height: 1; color: var(--apricot); }
.accordion__trigger[aria-expanded="true"] { background: var(--label); }
.accordion__trigger[aria-expanded="true"]::after { content: "–"; color: var(--indigo); }
.accordion__panel { padding: 16px 20px 20px; border-top: 1px dashed var(--ink-line); color: var(--ink-soft); font-size: 15.5px; }
.accordion__panel[hidden] { display: none; }

.copy-btn {
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--indigo);
  background: transparent;
  color: var(--indigo);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.copy-btn[data-copy-state="ok"] { background: var(--emerald); border-color: var(--emerald); color: #FFFFFF; }
.copy-btn[data-copy-state="fail"] { background: var(--amber); border-color: var(--amber); color: var(--ink); }

html.js .reveal,
html.js [data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
html.js .reveal.is-in,
html.js [data-reveal].is-in { opacity: 1; transform: none; }

/* 5. 图像容器基础规则 ----------------------------------------------------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1.5px solid var(--ink);
  border-radius: 18px;
  background-color: var(--mist);
  background-image: linear-gradient(135deg, rgba(22, 32, 74, .1), rgba(242, 154, 46, .16));
  box-shadow: var(--shadow-print);
}

.media-frame img,
.media-frame svg,
.media-frame video { width: 100%; height: 100%; object-fit: cover; }

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__hint {
  display: grid;
  place-items: center;
  height: 100%;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--indigo);
  opacity: .55;
}

.media-frame__label {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: var(--indigo);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
}

/* 6. 品牌轨道（左侧导览） ------------------------------------------------- */
.brand-rail { display: none; }

/* 7. 头部 ---------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background: rgba(247, 240, 228, .95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ink-line);
}

.status-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px var(--gutter);
  background: var(--indigo);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  white-space: nowrap;
  overflow: hidden;
}

.status-strip__text { min-width: 0; overflow: hidden; text-overflow: ellipsis; }

.nav-bar { position: relative; padding: 12px var(--gutter); }

.nav-capsule {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 64px;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 9px 12px 9px 20px;
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  box-shadow: 6px 6px 0 rgba(22, 32, 74, .14);
}

.nav-capsule__brand { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.nav-capsule__brand-cn { font-size: 17px; font-weight: 900; letter-spacing: -.01em; }
.nav-capsule__brand-en { font-family: var(--font-mono); font-size: 10px; letter-spacing: .22em; color: var(--ink-soft); }

.primary-nav { flex: 1 1 auto; min-width: 0; }
.primary-nav__list { display: flex; align-items: center; justify-content: center; gap: 2px; }
.primary-nav__item { min-width: 0; }

.primary-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition: background-color .18s ease, color .18s ease;
}

.primary-nav__link::before {
  content: attr(data-idx);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--apricot);
}

.primary-nav__link:hover { background: rgba(242, 154, 46, .2); }
.primary-nav__link[aria-current="page"] { background: var(--indigo); color: var(--paper); }
.primary-nav__link[aria-current="page"]::before { color: var(--lime); }

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  place-content: center;
  gap: 5px;
  border: 1.5px solid var(--ink);
  border-radius: 50%;
  background: var(--card);
}

.nav-toggle__bar { display: block; width: 18px; height: 2px; background: var(--ink); transition: transform .2s ease; }
.nav-toggle[aria-expanded="true"] { background: var(--apricot); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-of-type { transform: translateY(-3.5px) rotate(-45deg); }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 120;
  pointer-events: none;
  background: transparent;
}

.scroll-progress__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--apricot), var(--lime));
}

/* 8. 页脚 ---------------------------------------------------------------- */
.site-footer {
  padding: clamp(40px, 6vw, 78px) var(--gutter) clamp(22px, 3vw, 34px);
  background-color: var(--indigo);
  background-image: repeating-linear-gradient(90deg, rgba(247, 240, 228, .06) 0 1px, transparent 1px 92px);
  border-top: 6px solid var(--apricot);
  color: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 46px);
  max-width: var(--shell-max);
  margin-inline: auto;
}

.footer-brand__mark { font-size: clamp(19px, 2vw, 23px); font-weight: 900; letter-spacing: -.01em; }
.footer-brand__mark-en { margin-top: 4px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .26em; color: var(--lime); }

.footer-brand__summary {
  max-width: 34ch;
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper-soft);
}

.footer-ticket {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 8px 15px;
  border: 1px dashed var(--indigo-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
}

.footer-ticket__key { color: var(--apricot); }

.footer-col__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--lime);
}

.footer-col__list { display: grid; gap: 2px; }

.footer-link {
  display: inline-block;
  padding: 6px 0;
  color: var(--paper-soft);
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.footer-link:hover { color: var(--lime); border-bottom-color: var(--lime); }

.footer-contact { display: grid; gap: 2px; }

.footer-contact__item {
  display: grid;
  gap: 3px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--indigo-line);
}

.footer-contact__item:last-child { border-bottom: 0; }
.footer-contact__label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--apricot); }
.footer-contact__value { font-size: 14.5px; color: var(--paper); word-break: break-word; }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  max-width: var(--shell-max);
  margin: clamp(28px, 4vw, 46px) auto 0;
  padding-top: 18px;
  border-top: 1px dashed var(--indigo-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--paper-soft);
}

.footer-stamp { color: var(--lime); }

/* 9. 响应式 -------------------------------------------------------------- */
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1100px) {
  body { padding-left: var(--rail-w); }

  .skip-link { left: calc(var(--rail-w) + 14px); }

  .brand-rail {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 80;
    display: flex;
    flex-direction: column;
    gap: 22px;
    width: var(--rail-w);
    padding: 32px 22px 26px;
    background: var(--indigo);
    background-image: repeating-linear-gradient(0deg, rgba(247, 240, 228, .07) 0 1px, transparent 1px 46px);
    border-right: 1px solid var(--indigo-line);
    color: var(--paper);
  }

  .brand-rail__mark { display: flex; align-items: center; gap: 12px; }

  .brand-rail__glyph {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    flex: 0 0 auto;
    border-radius: 16px;
    background: var(--apricot);
    color: var(--ink);
    font-size: 26px;
    font-weight: 900;
    box-shadow: 4px 4px 0 rgba(183, 243, 74, .85);
  }

  .brand-rail__word { font-family: var(--font-mono); font-size: 11.5px; line-height: 1.7; letter-spacing: .26em; }

  .brand-rail__vertical {
    flex: 1 1 auto;
    min-height: 110px;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .32em;
    color: var(--paper-soft);
  }

  .rail-legend { display: grid; }

  .rail-legend__item {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 7px 0;
    border-bottom: 1px dashed var(--indigo-line);
    font-size: 13px;
  }

  .rail-legend__tick { font-family: var(--font-mono); font-size: 11px; color: var(--apricot); }
  .rail-legend__label { color: var(--paper); }

  .rail-status { display: flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .16em; color: var(--lime); }

  .nav-capsule__brand { display: none; }
  .nav-capsule__cta { display: inline-flex; }
  .nav-toggle { display: none; }

  .scroll-progress { left: var(--rail-w); }

  .footer-grid { grid-template-columns: 1.35fr .85fr .85fr 1.15fr; }
}

@media (max-width: 1099px) {
  .nav-capsule__cta { display: none; }
  .nav-toggle { display: inline-grid; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 12px);
    display: none;
    max-height: min(72vh, 520px);
    overflow: auto;
    padding: 10px 12px;
    background: var(--card);
    border: 1.5px solid var(--ink);
    border-radius: 22px;
    box-shadow: var(--shadow-print);
  }

  .primary-nav[data-open] { display: block; }
  .primary-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 13px 12px;
    border-radius: 14px;
    border-bottom: 1px dashed var(--ink-line);
    font-size: 16px;
  }
  .primary-nav__item:last-child .primary-nav__link { border-bottom: 0; }
}

@media (max-width: 1024px) {
  .span-3, .span-4 { grid-column: span 6; }
  .span-8, .span-9 { grid-column: span 12; }
}

@media (max-width: 680px) {
  .span-3, .span-4, .span-6 { grid-column: span 12; }
  .scoreboard { grid-auto-flow: row; grid-auto-columns: auto; }
  .scoreboard__cell { border-right: 0; border-bottom: 1px solid var(--indigo-line); }
  .scoreboard__cell:last-child { border-bottom: 0; }
  .log-line { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .status-strip { font-size: 11px; letter-spacing: .1em; padding-block: 7px; }
  .nav-capsule { padding-left: 16px; border-radius: 26px; }
  .display { transform: none; }
}

/* 10. 动效尊重 ----------------------------------------------------------- */
@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.js .reveal,
  html.js [data-reveal] { opacity: 1; transform: none; }

  .status-lamp--live,
  .status-lamp--warn { animation: none; }
}