/* ==========================================================================
   南宫赛事 /assets/site.css
   共享层：重置、变量、中文排版、轨道页头、页脚、按钮、容器与基础组件
   ========================================================================== */

:root {
  /* 色彩系统 */
  --green-ink: #06231C;
  --night-blue: #0B1D33;
  --panel-blue: #12293A;
  --grad-teal: #0E3B33;
  --grad-blue: #102A4A;
  --lime: #C9F24C;
  --orange: #FF7A3D;
  --card-red: #E5484D;
  --card-yellow: #F2C230;
  --text: #E9F2EE;
  --text-dim: #9BB0AE;
  --line: #2C4A47;

  /* 尺寸 */
  --rail-width: 104px;
  --header-h-mobile: 62px;
  --gutter: clamp(20px, 4vw, 48px);
  --gap: clamp(16px, 2.2vw, 28px);
  --radius: 2px;

  /* 字体 */
  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* 字号阶梯 */
  --step-0: 16px;
  --step-1: 20px;
  --step-2: 28px;
  --step-3: 40px;
  --step-4: 64px;
  --step-5: 96px;

  --ease: cubic-bezier(.22, .7, .3, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h-mobile) + 16px);
}

body {
  margin: 0;
  min-height: 100dvh;
  padding-left: var(--rail-width);
  background-color: var(--green-ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  position: relative;
  isolation: isolate;
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(130% 90% at 88% -12%, rgba(16, 42, 74, .62), rgba(16, 42, 74, 0) 62%),
    radial-gradient(100% 80% at 2% 108%, rgba(14, 59, 51, .55), rgba(14, 59, 51, 0) 58%);
}

body.nav-open { overflow: hidden; }

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

a { color: var(--lime); text-decoration: none; }

button { font: inherit; color: inherit; }

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

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

hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(201, 242, 76, .18);
  border-radius: 1px;
}

.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;
}

/* ---------- 中文排版基座 ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.01em;
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 6vw, var(--step-5)); }
h2 { font-size: clamp(24px, 3.6vw, var(--step-3)); }
h3 { font-size: clamp(19px, 2.2vw, var(--step-2)); }

p { text-wrap: pretty; }

.display-xl {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: condensed;
  font-size: clamp(40px, 7.4vw, 96px);
  line-height: .98;
  letter-spacing: -.02em;
  transform: skewX(-3deg);
  transform-origin: left center;
}

.skew {
  display: inline-block;
  transform: skewX(-3deg);
}

.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}

.stack > * + * { margin-top: var(--gap); }

/* ---------- 跳至主内容 ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--lime);
  color: #06231C;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .06em;
  text-decoration: none;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform .18s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* ==========================================================================
   页头 / 轨道导航
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-width);
  z-index: 80;
}

.rail {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  padding: 20px 0 16px;
  gap: 14px;
  background: linear-gradient(180deg, #041b16 0%, #06231C 44%, #07192b 100%);
  border-right: 1px solid var(--line);
}

/* 品牌 */
.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--lime);
  color: var(--lime);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1;
  transform: skewX(-3deg);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.brand:hover .brand-mark,
.brand:focus-visible .brand-mark {
  background: var(--lime);
  color: #06231C;
}

.brand-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.brand-name {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .26em;
  line-height: 1.1;
  transform: skewX(-3deg);
}

.brand-tag {
  display: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--text-dim);
}

/* 移动端菜单按钮 */
.nav-toggle { display: none; }

/* 导航 */
.site-nav {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  overflow-y: auto;
  scrollbar-width: none;
  padding: 6px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.site-nav::-webkit-scrollbar { width: 0; height: 0; }

.nav-list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin: auto 0;
  width: 100%;
}

.nav-item { width: 100%; }

.nav-link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 10px 8px 10px 14px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: bottom center;
  transition: transform .22s var(--ease), background-color .22s var(--ease);
}

.nav-link:hover { color: var(--text); }
.nav-link:hover::before { transform: scaleY(1); }

.nav-link[aria-current="page"] { color: var(--text); }

.nav-link[aria-current="page"]::before {
  background: var(--lime);
  transform: scaleY(1);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--line);
  transition: color .2s var(--ease);
}

.nav-link:hover .nav-index,
.nav-link[aria-current="page"] .nav-index { color: var(--lime); }

.nav-label {
  writing-mode: vertical-rl;
  font-size: 13px;
  letter-spacing: .18em;
  line-height: 1.1;
}

.nav-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 14px;
  padding: 14px 8px;
  writing-mode: vertical-rl;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1;
  color: #06231C;
  background: var(--lime);
  border: 1px solid var(--lime);
  border-radius: var(--radius);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: transparent;
  color: var(--lime);
}

/* 轨道底部 */
.rail-foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  width: 56px;
  border-top: 1px solid var(--line);
}

.rail-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--orange);
}

.rail-meta {
  font-size: 9px;
  letter-spacing: .2em;
  color: var(--line);
}

/* 滚动进度 */
.rail-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--lime), var(--orange));
  transform-origin: top center;
  transform: scaleY(var(--rail-progress, 0));
  pointer-events: none;
}

/* 遮罩 */
.nav-scrim { display: none; }

/* ---------- 平板窄轨 ---------- */
@media (min-width: 960px) and (max-width: 1180px) {
  :root { --rail-width: 88px; }

  .brand-name { font-size: 14px; letter-spacing: .2em; }
  .brand-mark { width: 34px; height: 34px; font-size: 15px; }
  .nav-link { padding: 8px 6px 8px 12px; }
  .nav-label { font-size: 12px; letter-spacing: .12em; }
  .nav-cta { font-size: 11px; padding: 12px 6px; }
}

/* ---------- 移动端 ---------- */
@media (max-width: 959px) {
  body { padding-left: 0; padding-top: var(--header-h-mobile); }

  .site-header {
    top: 0;
    right: 0;
    bottom: auto;
    width: auto;
  }

  .rail {
    flex-direction: row;
    align-items: center;
    height: var(--header-h-mobile);
    padding: 0 14px;
    gap: 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(4, 24, 20, .97);
  }

  .brand {
    flex-direction: row;
    gap: 10px;
    padding: 0;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }

  .brand-text {
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
  }

  .brand-name {
    writing-mode: horizontal-tb;
    font-size: 15px;
    letter-spacing: .12em;
  }

  .brand-tag { display: inline; }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    margin-left: auto;
    padding: 8px 10px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--text-dim);
    cursor: pointer;
    transition: border-color .2s var(--ease), color .2s var(--ease);
  }

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

  .nav-toggle-glyph {
    position: relative;
    display: block;
    width: 18px;
    height: 11px;
  }

  .nav-toggle-glyph span {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: currentColor;
    transition: transform .22s var(--ease), opacity .22s var(--ease);
  }

  .nav-toggle-glyph span:nth-child(1) { top: 0; }
  .nav-toggle-glyph span:nth-child(2) { bottom: 0; }

  .nav-toggle-text {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .12em;
  }

  .site-header[data-open] .nav-toggle-glyph span:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }

  .site-header[data-open] .nav-toggle-glyph span:nth-child(2) {
    transform: translateY(-5px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(320px, 86vw);
    padding: calc(var(--header-h-mobile) + 22px) 22px 30px;
    background: linear-gradient(180deg, #061f19 0%, #07182b 100%);
    border-right: 1px solid var(--line);
    border-top: 0;
    border-bottom: 0;
    transform: translateX(-102%);
    transition: transform .26s var(--ease);
    z-index: 90;
    overflow-y: auto;
    align-items: stretch;
    justify-content: flex-start;
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
    box-shadow: 18px 0 44px rgba(0, 0, 0, .45);
  }

  .site-header[data-open] .site-nav { transform: translateX(0); }

  .nav-list {
    margin: 0;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 14px 10px 14px 16px;
    border-bottom: 1px solid rgba(44, 74, 71, .55);
  }

  .nav-link::before {
    top: 12px;
    bottom: 12px;
    left: 4px;
  }

  .nav-index { font-size: 11px; }

  .nav-label {
    writing-mode: horizontal-tb;
    font-size: 15px;
    letter-spacing: .08em;
  }

  .nav-cta {
    writing-mode: horizontal-tb;
    margin-top: 20px;
    padding: 14px 16px;
    font-size: 14px;
    letter-spacing: .1em;
  }

  .rail-foot { display: none; }

  .rail-progress {
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    transform-origin: left center;
    transform: scaleX(var(--rail-progress, 0));
  }

  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    padding: 0;
    border: 0;
    background: rgba(3, 14, 11, .74);
    opacity: 0;
    pointer-events: none;
    transition: opacity .24s var(--ease);
    z-index: 85;
    cursor: pointer;
  }

  .site-header[data-open] .nav-scrim {
    opacity: 1;
    pointer-events: auto;
  }
}

/* ==========================================================================
   通用容器与区块
   ========================================================================== */
.container {
  width: min(var(--container-max, 1240px), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.container--narrow { --container-max: 820px; }
.container--wide { --container-max: 1480px; }

.prose {
  max-width: 34em;
  font-size: var(--step-0);
  line-height: 1.85;
  color: var(--text);
}

.prose p + p { margin-top: 1.15em; }

.prose h3 {
  margin-top: 1.9em;
  margin-bottom: .55em;
  font-size: var(--step-2);
}

.prose ul,
.prose ol {
  margin-top: 1em;
  padding-left: 1.1em;
  list-style: disc;
}

.prose li + li { margin-top: .45em; }

/* 坐标索引式章节头 */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 36px);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--lime);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, var(--step-2));
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.01em;
}

.section-note {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-dim);
}

/* 框景 */
.frame {
  position: relative;
  padding: clamp(20px, 3vw, 40px);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--grad-teal) 0%, var(--grad-blue) 100%);
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--lime);
  pointer-events: none;
}

.frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.frame::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

.frame-ruler {
  height: 6px;
  margin-bottom: 18px;
  background-image: repeating-linear-gradient(90deg, rgba(201, 242, 76, .55) 0 1px, transparent 1px 18px);
  opacity: .7;
  pointer-events: none;
}

/* 面板 */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 41, 58, .55);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: rgba(201, 242, 76, .45);
  box-shadow: 0 14px 30px rgba(0, 0, 0, .34);
}

/* 宽幅数据带 */
.data-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(11, 29, 51, .85) 0%, rgba(14, 59, 51, .6) 100%);
}

.data-value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, var(--step-3));
  font-weight: 500;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
  line-height: 1.05;
}

.data-label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--text-dim);
}

/* 图例 */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-dim);
}

.legend-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: none;
}

.legend-dot--lime { background: var(--lime); }
.legend-dot--orange { background: var(--orange); }
.legend-dot--red { background: var(--card-red); }
.legend-dot--yellow { background: var(--card-yellow); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: .08em;
  text-decoration: none;
  cursor: pointer;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.btn--primary {
  background: var(--lime);
  border-color: var(--lime);
  color: #06231C;
  font-weight: 700;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #d8ff63;
  border-color: #d8ff63;
}

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

/* 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(--text-dim);
}

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

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

.breadcrumb-sep { color: var(--line); }

/* 图片容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--grad-teal) 0%, var(--grad-blue) 100%);
  aspect-ratio: 16 / 9;
}

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

.media-frame figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 14px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--text-dim);
  background: linear-gradient(rgba(6, 35, 28, 0), rgba(6, 35, 28, .92));
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

/* 网格 */
.grid {
  display: grid;
  gap: var(--gap);
}

.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: 959px) {
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 639px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 140px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 29, 51, .6) 0%, rgba(6, 35, 28, .96) 100%);
  color: var(--text);
}

.site-footer::before {
  content: "";
  display: block;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 14px);
  opacity: .55;
  pointer-events: none;
}

.footer-inner {
  width: min(1240px, 100% - var(--gutter) * 2);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 64px) 0 26px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(230px, 1.1fr) 2fr;
  gap: clamp(28px, 5vw, 72px);
  padding-bottom: clamp(24px, 3vw, 38px);
}

.footer-brand { min-width: 0; }

.footer-mark {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: .06em;
  line-height: 1.1;
  transform: skewX(-3deg);
}

.footer-tag {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--lime);
}

.footer-note {
  margin-top: 16px;
  max-width: 24em;
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-dim);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 40px);
}

.footer-col { min-width: 0; }

.footer-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  line-height: 1.4;
  color: var(--text-dim);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-list a {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: color .2s var(--ease);
}

.footer-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s var(--ease);
}

.footer-list a:hover,
.footer-list a:focus-visible { color: var(--lime); }

.footer-list a:hover::after,
.footer-list a:focus-visible::after { transform: scaleX(1); }

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--text-dim);
}

.footer-contact-item { display: inline-flex; gap: 8px; }

.footer-contact-item strong {
  font-weight: 500;
  color: var(--lime);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding-top: 18px;
  font-size: 12px;
  color: var(--text-dim);
}

.footer-base .mono {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--text-dim);
}

@media (max-width: 859px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 479px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .footer-contact { flex-direction: column; gap: 8px; }
}

/* ==========================================================================
   可访问性
   ========================================================================== */
@media (min-width: 960px) {
  html { scroll-padding-top: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  .card:hover { transform: none; }
}