/* =========================================================
   bsports赛场 · 共享样式 /assets/site.css
   赛场墨绿 + 炭黑基底，电光青 / 荧光橙 / 比分黄绿强调
   ========================================================= */

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

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

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 560px at 84% -8%, rgba(0, 229, 255, .13), transparent 62%),
    radial-gradient(920px 520px at 2% 108%, rgba(110, 31, 58, .40), transparent 66%),
    linear-gradient(180deg, #062B26 0%, #06221F 46%, #0B0F10 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
a { color: inherit; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; }
table { border-collapse: collapse; width: 100%; }

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

/* ---------- 变量 ---------- */
:root {
  --ink: #062B26;
  --ink-deep: #06221F;
  --carbon: #0B0F10;
  --cyan: #00E5FF;
  --orange: #FF6B1A;
  --lime: #C6FF3D;
  --blue-a: #1B4B8F;
  --blue-b: #68B6FF;
  --wine: #6E1F3A;
  --indigo: #2E1A5E;
  --paper: #F2F7F5;
  --paper-dim: rgba(242, 247, 245, .66);
  --paper-soft: rgba(242, 247, 245, .42);
  --line: rgba(242, 247, 245, .14);
  --line-strong: rgba(242, 247, 245, .28);

  --wrap: 1180px;
  --rail: 56px;
  --header-h: 76px;
  --radius: 14px;

  --cut: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  --cut-lg: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));

  --font-display: 'Barlow Condensed', 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 背景装饰：数据网格 + 城市天际线 ---------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(242, 247, 245, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 247, 245, .035) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(circle at 50% 18%, #000 0%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 18%, #000 0%, transparent 78%);
}

body::before {
  content: "";
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 118px;
  z-index: 0;
  pointer-events: none;
  opacity: .8;
  background: linear-gradient(180deg, rgba(0, 229, 255, .16), rgba(0, 229, 255, .02));
  clip-path: polygon(
    0 100%, 0 62%, 4% 62%, 4% 44%, 9% 44%, 9% 70%, 13% 70%, 13% 30%, 17% 30%,
    17% 55%, 22% 55%, 22% 20%, 27% 20%, 27% 66%, 32% 66%, 32% 40%, 37% 40%,
    37% 58%, 42% 58%, 42% 14%, 46% 14%, 46% 50%, 51% 50%, 51% 34%, 56% 34%,
    56% 68%, 60% 68%, 60% 26%, 65% 26%, 65% 52%, 70% 52%, 70% 38%, 75% 38%,
    75% 64%, 80% 64%, 80% 22%, 85% 22%, 85% 56%, 90% 56%, 90% 42%, 95% 42%,
    95% 70%, 100% 70%, 100% 100%
  );
}

#main-content {
  position: relative;
  z-index: 1;
  display: block;
}

/* ---------- 通用容器与排版 ---------- */
.wrap {
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
}

.display {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  letter-spacing: -.03em;
  line-height: 1.05;
  font-size: clamp(2rem, 4.6vw, 3.5rem);
  color: var(--paper);
}

.section {
  position: relative;
  padding: 68px 0;
}

.section__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}

.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.prose p { margin-bottom: 1.05em; }
.prose p:last-child { margin-bottom: 0; }
.prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.prose h2, .prose h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: 1.6em 0 .6em;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cyan);
  text-decoration: none;
  transition: gap .22s var(--ease), color .22s var(--ease);
}

.link-arrow::after { content: "→"; font-size: 14px; }
.link-arrow:hover { gap: 14px; color: var(--lime); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 800;
  font-style: italic;
  font-size: 14px;
  letter-spacing: .02em;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease),
              background-color .22s var(--ease), border-color .22s var(--ease),
              color .22s var(--ease);
}

.btn--accent {
  background: var(--orange);
  color: #160A02;
  box-shadow: 0 10px 26px rgba(255, 107, 26, .28);
}

.btn--accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(255, 107, 26, .44);
}

.btn--ghost {
  background: rgba(242, 247, 245, .04);
  border-color: var(--line-strong);
  color: var(--paper);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 18px;
  top: -70px;
  z-index: 120;
  padding: 10px 18px;
  background: var(--lime);
  color: #08210F;
  font-weight: 800;
  font-size: 14px;
  text-decoration: none;
  border-radius: 0 0 12px 12px;
  transition: top .22s var(--ease);
}

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

/* =========================================================
   页头：品牌轨道 + 悬浮胶囊导航
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(6, 43, 38, .97), rgba(6, 34, 31, .86));
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}

.site-header::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32%;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 255, 0));
  pointer-events: none;
}

.site-header.is-stuck {
  box-shadow: 0 18px 40px rgba(0, 0, 0, .48);
}

.site-header__inner {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
  min-height: var(--header-h);
  padding: 10px 0;
}

/* 品牌轨道 */
.site-header__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding-right: 12px;
  border-right: 1px solid var(--line);
}

.rail-mark {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.rail-line {
  width: 1px;
  height: 16px;
  background: linear-gradient(180deg, var(--cyan), rgba(0, 229, 255, 0));
}

.rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--lime);
}

/* 品牌 */
.brand {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  text-decoration: none;
}

.brand__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: 23px;
  letter-spacing: -.035em;
  line-height: 1;
  color: var(--paper);
}

.brand__accent {
  font-style: normal;
  color: var(--lime);
  margin-left: 2px;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--paper-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand:hover .brand__mark { color: var(--cyan); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(11, 15, 16, .6);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  cursor: pointer;
  transition: border-color .22s var(--ease), color .22s var(--ease);
}

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

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .26s var(--ease), opacity .26s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 导航胶囊 */
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 6px 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(11, 15, 16, .55);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .34), inset 0 1px 0 rgba(242, 247, 245, .06);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13.5px;
  letter-spacing: .01em;
  color: var(--paper-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
  background: rgba(0, 229, 255, .10);
}

.site-nav__link[aria-current="page"] {
  color: #04201C;
  background: var(--cyan);
  font-weight: 700;
}

.site-nav__cta { margin-left: 6px; }

/* 滚动进度 */
.site-header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(var(--p, 0));
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--lime) 58%, var(--orange));
  pointer-events: none;
}

/* 窄屏导航 */
@media (max-width: 960px) {
  :root { --header-h: 64px; }

  body { background-attachment: scroll; }

  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
  }

  .site-header__rail { display: none; }

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

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    display: grid;
    gap: 0;
    padding: 14px 20px 26px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: linear-gradient(180deg, rgba(6, 43, 38, .99), rgba(11, 15, 16, .99));
    box-shadow: 0 26px 50px rgba(0, 0, 0, .55);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-14px);
    transition: transform .3s var(--ease), opacity .3s var(--ease), visibility .3s linear;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .site-nav__list {
    display: grid;
    gap: 0;
  }

  .site-nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 4px;
    border-radius: 0;
    border-bottom: 1px dashed var(--line);
    font-size: 17px;
    color: var(--paper);
  }

  .site-nav__link::after {
    content: attr(data-index);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .1em;
    color: var(--cyan);
  }

  .site-nav__cta {
    margin: 18px 0 0;
    width: 100%;
  }
}

@media (max-width: 600px) {
  .brand__sub { display: none; }
  .brand__mark { font-size: 20px; }
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 72px;
  background: linear-gradient(180deg, #0B0F10 0%, #05090A 100%);
  border-top: 1px solid var(--line);
  color: var(--paper);
}

.site-footer__edge {
  display: block;
  height: 10px;
  opacity: .55;
  background:
    repeating-linear-gradient(115deg, rgba(0, 229, 255, .6) 0 2px, transparent 2px 12px),
    linear-gradient(90deg, var(--wine), var(--indigo) 58%, rgba(46, 26, 94, 0));
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: 38px;
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
  padding: 54px 0 40px;
}

.site-footer__brand { min-width: 0; }

.site-footer__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: 27px;
  letter-spacing: -.035em;
  line-height: 1.1;
  color: var(--paper);
}

.site-footer__mark-accent {
  font-style: normal;
  color: var(--lime);
  margin-left: 2px;
}

.site-footer__lede {
  margin-top: 12px;
  max-width: 30ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.site-footer__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.site-footer__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}

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

.footer-links a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  color: var(--paper-dim);
  text-decoration: none;
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.footer-links a:hover {
  color: var(--cyan);
  transform: translateX(4px);
}

.footer-contact {
  display: grid;
  gap: 12px;
}

.footer-contact li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--paper-soft);
}

.footer-contact__val {
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
  padding: 20px 0 30px;
  border-top: 1px solid var(--line);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--paper-soft);
}

.footer-note {
  flex: 1 1 260px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--paper-soft);
}

@media (max-width: 960px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 30px; padding: 44px 0 32px; }
  .site-footer { margin-top: 56px; }
}

@media (max-width: 600px) {
  .site-footer__inner { grid-template-columns: 1fr; }
  .site-footer__base { padding: 18px 0 26px; }
}

/* =========================================================
   通用页面组件
   ========================================================= */

/* 展览标签 */
.exhibit-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px 5px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lime);
  background: rgba(198, 255, 61, .08);
  border: 1px solid rgba(198, 255, 61, .32);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

/* 切角面板 */
.plate {
  position: relative;
  padding: 24px;
  background: linear-gradient(160deg, rgba(242, 247, 245, .07), rgba(242, 247, 245, .02));
  border: 1px solid var(--line);
  clip-path: var(--cut);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.plate--wine {
  background: linear-gradient(160deg, rgba(110, 31, 58, .62), rgba(11, 15, 16, .72));
  border-color: rgba(110, 31, 58, .7);
}

.plate--indigo {
  background: linear-gradient(160deg, rgba(46, 26, 94, .72), rgba(11, 15, 16, .72));
  border-color: rgba(46, 26, 94, .8);
}

.plate--dark {
  background: linear-gradient(160deg, rgba(11, 15, 16, .92), rgba(6, 34, 31, .82));
}

.plate--bare { clip-path: none; border-radius: var(--radius); }

.plate:hover { transform: translateY(-3px); border-color: var(--line-strong); }

/* 记分牌数据 */
.board {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--cut-lg);
}

.board__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  background: rgba(11, 15, 16, .78);
}

.stat { display: block; }

.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--paper-soft);
}

/* 时间轴 */
.timeline {
  position: relative;
  display: grid;
  gap: 0;
  padding-left: 4px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(0, 229, 255, .05));
}

.timeline__item {
  position: relative;
  padding: 0 0 24px 44px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 2px solid var(--cyan);
}

.timeline__time {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  margin-bottom: 4px;
}

/* 标签 */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--cyan);
  background: rgba(0, 229, 255, .08);
  border: 1px solid rgba(0, 229, 255, .26);
}

/* 主题筛选 */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  padding: 8px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  cursor: pointer;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.filter-btn:hover { color: var(--paper); border-color: var(--cyan); }

.filter-btn[aria-pressed="true"],
.filter-btn.is-active {
  background: var(--cyan);
  border-color: transparent;
  color: #04201C;
  font-weight: 700;
}

/* 图片容器 */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: linear-gradient(150deg, var(--blue-a), #0B0F10 55%, var(--indigo));
  clip-path: var(--cut-lg);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}

.media:hover img { transform: scale(1.04); }

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

.media--map { background: linear-gradient(140deg, var(--blue-a), var(--blue-b)); }

.media--crowd {
  background:
    radial-gradient(60% 70% at 50% 120%, rgba(255, 107, 26, .35), transparent 65%),
    linear-gradient(140deg, #0B0F10, var(--wine));
}

.media--pitch {
  background:
    repeating-linear-gradient(90deg, rgba(198, 255, 61, .07) 0 14px, transparent 14px 28px),
    linear-gradient(160deg, #062B26, #0B0F10);
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px 18px 14px;
  background: linear-gradient(180deg, transparent, rgba(5, 9, 10, .92));
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--paper);
}

/* 网格 */
.grid {
  display: grid;
  gap: 22px;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 960px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 48px 0; }
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--paper-soft);
}

.breadcrumb li { display: inline-flex; align-items: center; }

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(242, 247, 245, .28);
}

.breadcrumb a {
  color: var(--paper-soft);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.breadcrumb a:hover { color: var(--cyan); }

/* 显现协议 */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

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

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

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

  .media:hover img,
  .btn:hover,
  .plate:hover,
  .footer-links a:hover { transform: none; }
}