/* ==========================================================================
   必一体育 · 赛季档案站 共享样式 /assets/site.css
   色彩节奏：夜场炭墨底 → 深场绿分区 → 荧光绿数据线与焦点 → 琥珀标注 → 苔绿次级
   ========================================================================== */

:root {
  --bs-ink: #0C1413;
  --bs-green: #123326;
  --bs-lime: #B6FF37;
  --bs-paper: #F3EFE4;
  --bs-amber: #F2A93B;
  --bs-moss: #6E8A78;
  --bs-line: #9FB3A6;
  --bs-red: #E4573D;
  --bs-cyan: #39C6A6;
  --bs-glass: #1C2B26;

  --bs-hair: rgba(159, 179, 166, 0.22);
  --bs-hair-soft: rgba(159, 179, 166, 0.12);
  --bs-lime-hair: rgba(182, 255, 55, 0.24);

  --bs-radius-lg: 32px;
  --bs-radius-md: 18px;
  --bs-radius-sm: 12px;
  --bs-radius-pill: 999px;

  --bs-font-display: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --bs-font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bs-font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;

  --bs-shell: 1280px;
  --bs-gutter: clamp(16px, 4vw, 44px);
  --bs-dur: 240ms;
  --bs-ease: linear;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
  background: var(--bs-ink);
}

body {
  margin: 0;
  background: var(--bs-ink);
  color: var(--bs-paper);
  font-family: var(--bs-font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { display: block; max-width: 100%; }
table { border-collapse: collapse; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--bs-lime);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--bs-lime); color: var(--bs-ink); }

/* ---------- 中文排版与文字角色 ---------- */
.bs-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.bs-eyebrow {
  display: inline-block;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bs-lime);
  line-height: 1.5;
}

.bs-data {
  font-family: var(--bs-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

.bs-annotation {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--bs-moss);
}

.bs-annotation--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.18em;
}

.bs-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 13px;
  border: 1px solid var(--bs-hair);
  border-radius: var(--bs-radius-pill);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--bs-line);
  background: rgba(243, 239, 228, 0.03);
}

.bs-rule {
  width: 100%;
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--bs-lime-hair), rgba(159, 179, 166, 0.14) 42%, transparent);
}

/* ---------- 布局底座 ---------- */
.bs-skip {
  position: absolute;
  top: -92px;
  left: 16px;
  z-index: 400;
  padding: 12px 20px;
  background: var(--bs-lime);
  color: var(--bs-ink);
  font-size: 14px;
  letter-spacing: 0.04em;
  border-radius: 0 0 14px 14px;
  transition: top 200ms var(--bs-ease);
}

.bs-skip:focus { top: 0; }

.bs-main { display: block; }

.bs-container {
  width: min(var(--bs-shell), calc(100% - var(--bs-gutter) * 2));
  margin-inline: auto;
}

.bs-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 24px);
}

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

/* ---------- 通用块级组件 ---------- */
.bs-panel {
  background: rgba(18, 51, 38, 0.55);
  border: 1px solid var(--bs-hair);
  border-radius: var(--bs-radius-md);
  padding: clamp(18px, 2.4vw, 30px);
}

.bs-panel--glass {
  background: rgba(28, 43, 38, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.bs-panel--paper {
  background: var(--bs-paper);
  color: var(--bs-ink);
  border-color: rgba(12, 20, 19, 0.14);
}

.bs-band {
  width: 100%;
  background: var(--bs-green);
  border-block: 1px solid var(--bs-lime-hair);
}

.bs-band__inner {
  width: min(var(--bs-shell), calc(100% - var(--bs-gutter) * 2));
  margin-inline: auto;
  padding: clamp(14px, 2vw, 22px) 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: clamp(12px, 3vw, 44px);
}

.bs-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid var(--bs-hair);
  border-radius: var(--bs-radius-pill);
  background: transparent;
  color: var(--bs-paper);
  font-size: 14px;
  letter-spacing: 0.05em;
  line-height: 1.5;
  transition: background-color var(--bs-dur) var(--bs-ease),
              color var(--bs-dur) var(--bs-ease),
              border-color var(--bs-dur) var(--bs-ease);
}

.bs-btn--lime {
  background: var(--bs-lime);
  color: var(--bs-ink);
  border-color: var(--bs-lime);
  font-weight: 600;
}

.bs-btn--ghost:hover,
.bs-btn--ghost:focus-visible {
  border-color: var(--bs-lime);
  color: var(--bs-lime);
}

.bs-btn--lime:hover,
.bs-btn--lime:focus-visible {
  background: var(--bs-paper);
  border-color: var(--bs-paper);
}

.bs-btn--quiet {
  border-color: transparent;
  padding-inline: 10px;
  color: var(--bs-moss);
}

.bs-btn--quiet:hover,
.bs-btn--quiet:focus-visible { color: var(--bs-lime); }

.bs-prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: rgba(243, 239, 228, 0.86);
}

.bs-prose > * + * { margin-top: 1.4em; }
.bs-prose h2 { font-size: 26px; line-height: 1.35; color: var(--bs-paper); letter-spacing: -0.01em; }
.bs-prose h3 { font-size: 19px; line-height: 1.45; color: var(--bs-paper); }
.bs-prose strong { color: var(--bs-paper); font-weight: 600; }
.bs-prose a { color: var(--bs-lime); border-bottom: 1px solid var(--bs-lime-hair); }
.bs-prose ul { display: grid; gap: 10px; }
.bs-prose li { padding-left: 20px; position: relative; }
.bs-prose li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 8px; height: 2px;
  background: var(--bs-lime);
}

.bs-table {
  width: 100%;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.bs-table th,
.bs-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--bs-hair-soft);
  vertical-align: top;
}

.bs-table th {
  background: var(--bs-green);
  color: var(--bs-lime);
  font-family: var(--bs-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.bs-table tbody tr:nth-child(even) { background: rgba(243, 239, 228, 0.03); }

/* ---------- 面包屑 ---------- */
.bs-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bs-moss);
}

.bs-breadcrumb__item { display: inline-flex; align-items: center; gap: 9px; }

.bs-breadcrumb__link {
  color: var(--bs-moss);
  border-bottom: 1px solid transparent;
  transition: color var(--bs-dur) var(--bs-ease), border-color var(--bs-dur) var(--bs-ease);
}

.bs-breadcrumb__link:hover,
.bs-breadcrumb__link:focus-visible {
  color: var(--bs-lime);
  border-bottom-color: var(--bs-lime);
}

.bs-breadcrumb__sep { color: rgba(110, 138, 120, 0.5); }

.bs-breadcrumb__item[aria-current="page"] { color: var(--bs-paper); }

/* ---------- 赛季轴 ---------- */
.bs-rail {
  position: sticky;
  top: 132px;
  align-self: start;
  display: grid;
  gap: 16px;
  padding: 22px 18px;
  border-left: 2px solid rgba(182, 255, 55, 0.42);
  border-radius: 0 var(--bs-radius-md) var(--bs-radius-md) 0;
  background: linear-gradient(180deg, rgba(18, 51, 38, 0.55), rgba(18, 51, 38, 0));
}

.bs-rail__label {
  font-family: var(--bs-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--bs-moss);
}

.bs-rail__list { display: grid; gap: 4px; }

.bs-rail__link {
  display: block;
  padding: 7px 11px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(243, 239, 228, 0.7);
  transition: background-color 180ms var(--bs-ease), color 180ms var(--bs-ease);
}

.bs-rail__link:hover { color: var(--bs-paper); background: rgba(182, 255, 55, 0.07); }

.bs-rail__link.is-active,
.bs-rail__link[aria-current="true"] {
  background: var(--bs-lime);
  color: var(--bs-ink);
  font-weight: 600;
}

[data-season-axis="closed"] .bs-rail { display: none; }

/* ---------- 图片容器 ---------- */
.bs-media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--bs-radius-lg);
  border: 1px solid var(--bs-hair-soft);
  background: #0A1211;
  aspect-ratio: 16 / 10;
}

.bs-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(159, 179, 166, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(159, 179, 166, 0.1) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px;
}

.bs-media__inner {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
}

.bs-media__inner img,
.bs-media__inner svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bs-media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 28px 18px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--bs-line);
  background: linear-gradient(180deg, rgba(12, 20, 19, 0), rgba(12, 20, 19, 0.88));
}

.bs-media--map { aspect-ratio: 4 / 3; }
.bs-media--gesture { aspect-ratio: 3 / 4; border-radius: var(--bs-radius-md); }
.bs-media--arc { aspect-ratio: 16 / 9; }
.bs-media--spot { aspect-ratio: 1 / 1; border-radius: 50%; }

/* ---------- 渐入协议 ---------- */
[data-reveal].is-pending {
  opacity: 0;
  transform: translateX(-14px);
}

[data-reveal].is-shown {
  opacity: 1;
  transform: none;
  transition: opacity 280ms var(--bs-ease), transform 280ms var(--bs-ease);
}

/* ==========================================================================
   共享头部
   ========================================================================== */
.bs-header {
  position: sticky;
  top: 0;
  z-index: 120;
  padding: clamp(12px, 1.6vw, 20px) 0 0;
  pointer-events: none;
}

.bs-header__capsule {
  pointer-events: auto;
  position: relative;
  width: min(var(--bs-shell), calc(100% - var(--bs-gutter) * 2));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  padding: 10px 14px 10px 22px;
  border-radius: var(--bs-radius-pill);
  background: rgba(28, 43, 38, 0.82);
  border: 1px solid rgba(159, 179, 166, 0.22);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.38);
  transition: padding 260ms var(--bs-ease),
              background-color 260ms var(--bs-ease),
              border-color 260ms var(--bs-ease);
}

.bs-header.is-compact .bs-header__capsule {
  padding: 6px 12px 6px 18px;
  background: rgba(12, 20, 19, 0.93);
  border-color: var(--bs-lime-hair);
}

/* 品牌 */
.bs-brand {
  flex: 0 0 auto;
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px 0;
}

.bs-brand__mark {
  font-family: var(--bs-font-display);
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--bs-paper);
}

.bs-brand__sub {
  font-size: 10.5px;
  letter-spacing: 0.16em;
  line-height: 1.2;
  color: var(--bs-moss);
  transition: opacity 200ms var(--bs-ease);
}

.bs-header.is-compact .bs-brand__sub { opacity: 0; }

/* 移动端按钮 */
.bs-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--bs-hair);
  border-radius: var(--bs-radius-pill);
  color: var(--bs-paper);
  font-size: 13px;
  letter-spacing: 0.08em;
  transition: border-color var(--bs-dur) var(--bs-ease), color var(--bs-dur) var(--bs-ease);
}

.bs-nav-toggle:hover { border-color: var(--bs-lime); color: var(--bs-lime); }

.bs-nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
  height: 12px;
}

.bs-nav-toggle__bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 200ms var(--bs-ease);
}

.bs-nav-toggle[aria-expanded="true"] .bs-nav-toggle__bar:first-child { transform: translateY(2.75px) rotate(45deg); }
.bs-nav-toggle[aria-expanded="true"] .bs-nav-toggle__bar:last-child { transform: translateY(-2.75px) rotate(-45deg); }

.bs-nav-toggle__text { white-space: nowrap; }

/* 主导航 */
.bs-nav { margin-inline: auto; min-width: 0; }

.bs-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.4vw, 20px);
}

.bs-nav__item { display: flex; }

.bs-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1.5;
  color: rgba(243, 239, 228, 0.76);
  white-space: nowrap;
  transition: color var(--bs-dur) var(--bs-ease);
}

.bs-nav__link::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 2px;
  height: 2px;
  background: var(--bs-lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--bs-dur) var(--bs-ease);
}

.bs-nav__link:hover,
.bs-nav__link:focus-visible { color: var(--bs-paper); }

.bs-nav__link[aria-current="page"] { color: var(--bs-lime); }
.bs-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 右侧工具区 */
.bs-header__utility {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

.bs-axis-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid rgba(182, 255, 55, 0.4);
  border-radius: var(--bs-radius-pill);
  background: rgba(182, 255, 55, 0.08);
  color: var(--bs-lime);
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: color var(--bs-dur) var(--bs-ease),
              border-color var(--bs-dur) var(--bs-ease),
              background-color var(--bs-dur) var(--bs-ease);
}

.bs-axis-toggle::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  transition: transform 200ms var(--bs-ease);
}

.bs-axis-toggle:hover { background: rgba(182, 255, 55, 0.16); }

.bs-axis-toggle.is-off {
  color: var(--bs-moss);
  border-color: var(--bs-hair);
  background: transparent;
}

.bs-header__boundary {
  padding-left: 14px;
  border-left: 1px solid var(--bs-hair);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bs-moss);
  white-space: nowrap;
}

/* 阅读进度 */
.bs-progress {
  pointer-events: none;
  position: relative;
  height: 2px;
  width: min(var(--bs-shell), calc(100% - var(--bs-gutter) * 2));
  margin: 10px auto 0;
  border-radius: 2px;
  background: rgba(159, 179, 166, 0.14);
  overflow: hidden;
}

.bs-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--bs-lime), var(--bs-cyan));
  transition: width 120ms var(--bs-ease);
}

/* ==========================================================================
   共享页脚
   ========================================================================== */
.bs-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 130px);
  padding: clamp(42px, 6vw, 78px) 0 clamp(22px, 3vw, 34px);
  background: var(--bs-green);
  border-top: 1px solid var(--bs-lime-hair);
  color: var(--bs-paper);
  overflow: hidden;
}

.bs-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(182, 255, 55, 0.55), transparent);
}

.bs-footer__inner {
  width: min(var(--bs-shell), calc(100% - var(--bs-gutter) * 2));
  margin-inline: auto;
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.bs-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
  gap: clamp(26px, 4vw, 60px);
}

.bs-footer__brand {
  font-family: var(--bs-font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.bs-footer__tagline {
  margin-top: 8px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--bs-lime);
}

.bs-footer__note {
  margin-top: 16px;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(243, 239, 228, 0.72);
}

.bs-footer__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.bs-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(18px, 2.5vw, 32px);
}

.bs-footer__col-title {
  font-family: var(--bs-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bs-moss);
}

.bs-footer__list {
  display: grid;
  gap: 9px;
  margin-top: 14px;
}

.bs-footer__link {
  position: relative;
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(243, 239, 228, 0.82);
  transition: color var(--bs-dur) var(--bs-ease);
}

.bs-footer__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--bs-lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 200ms var(--bs-ease);
}

.bs-footer__link:hover,
.bs-footer__link:focus-visible { color: var(--bs-lime); }
.bs-footer__link:hover::after,
.bs-footer__link:focus-visible::after { transform: scaleX(1); }

.bs-footer__service {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--bs-hair);
  border-bottom: 1px solid var(--bs-hair);
}

.bs-footer__service-line {
  font-family: var(--bs-font-mono);
  font-size: 13.5px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: rgba(243, 239, 228, 0.9);
}

.bs-footer__scope {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--bs-moss);
}

.bs-footer__boundary {
  max-width: 92ch;
  padding-left: 16px;
  border-left: 2px solid rgba(242, 169, 59, 0.6);
  font-size: 13px;
  line-height: 1.85;
  color: rgba(243, 239, 228, 0.66);
}

.bs-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bs-moss);
}

.bs-footer__record { color: rgba(243, 239, 228, 0.62); }
.bs-footer__copyright { color: var(--bs-moss); }
.bs-footer__year { margin-left: auto; color: rgba(243, 239, 228, 0.62); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1180px) {
  .bs-header__boundary { display: none; }
}

@media (max-width: 1060px) {
  html { scroll-padding-top: 108px; }

  .bs-header__capsule {
    flex-wrap: wrap;
    padding: 10px 12px 10px 16px;
    border-radius: 24px;
  }

  .bs-nav-toggle { display: inline-flex; }

  .bs-nav {
    order: 3;
    flex: 1 0 100%;
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 8px);
    margin-inline: 0;
    padding: 8px;
    border-radius: 20px;
    background: rgba(12, 20, 19, 0.97);
    border: 1px solid var(--bs-hair);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    max-height: min(72vh, 560px);
    overflow-y: auto;
  }

  .bs-nav[data-open] { display: block; }

  .bs-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .bs-nav__item { display: block; }

  .bs-nav__link {
    display: block;
    padding: 13px 16px;
    border-radius: 14px;
    font-size: 15px;
    color: var(--bs-paper);
  }

  .bs-nav__link::after { left: 16px; right: 16px; bottom: 8px; }

  .bs-nav__link[aria-current="page"] { background: rgba(182, 255, 55, 0.08); }

  .bs-header__utility { margin-left: auto; gap: 10px; }

  .bs-progress { margin-top: 8px; }

  .bs-rail {
    position: static;
    border-left: 0;
    border-top: 2px solid rgba(182, 255, 55, 0.42);
    border-radius: 0 0 var(--bs-radius-md) var(--bs-radius-md);
  }

  .bs-rail__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
  }

  .bs-rail__link { white-space: nowrap; }

  .bs-footer__top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .bs-span-4,
  .bs-span-6,
  .bs-span-8 { grid-column: span 12; }

  .bs-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .bs-axis-toggle { padding: 6px 10px; font-size: 11px; letter-spacing: 0.06em; }
  .bs-nav-toggle { padding: 8px 12px; letter-spacing: 0.06em; }
  .bs-brand__sub { letter-spacing: 0.1em; }
  .bs-footer__cols { grid-template-columns: minmax(0, 1fr); }
  .bs-footer__year { margin-left: 0; }
}

/* ==========================================================================
   动效与可访问性降级
   ========================================================================== */
@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;
    transition-delay: 0ms !important;
  }

  [data-reveal].is-pending {
    opacity: 1;
    transform: none;
  }
}