/* ============================================================
   site.css — 爱游戏赛场 · 体育数据档案
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ============================================================ */

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

[hidden] { display: none !important; }

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

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

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

input { font: inherit; }

::selection { background: rgba(242, 178, 51, 0.88); color: #0B1F16; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #071E16;
  --panel: #0E2E22;
  --turf: #1F7A4D;
  --cyan: #35E0C0;
  --amber: #F2B233;
  --red: #D94F3D;
  --slate: #8FA6B2;
  --paper: #F4F1E8;
  --line: #1C4A38;
  --violet: #6F5BD6;

  --rail-w: 88px;
  --topbar-h: 76px;
  --maxw: 1280px;
  --radius: 16px;
  --radius-lg: 26px;
  --gutter: clamp(18px, 3.4vw, 44px);

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

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, rgba(28, 74, 56, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 74, 56, 0.42) 1px, transparent 1px);
  background-size: 92px 92px;
  background-position: center top;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(15.5px, 0.35vw + 14.6px, 17px);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

h1 { font-size: clamp(2.4rem, 5.4vw, 5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.75rem); }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.5rem); letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; letter-spacing: 0; }

p { max-width: 72ch; }

strong, b { font-weight: 600; color: var(--paper); }

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

/* ---------- 4. 工具类 ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: calc(var(--rail-w) + 16px);
  z-index: 220;
  transform: translateY(-180%);
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--amber);
  color: #0B1F16;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 0.16s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 210;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--amber), var(--cyan));
  pointer-events: none;
}

/* ---------- 5. 布局容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(46px, 6.5vw, 96px);
}

.section--panel {
  background: linear-gradient(180deg, rgba(14, 46, 34, 0.72), rgba(9, 33, 24, 0.55));
  border-block: 1px solid var(--line);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px 32px;
  margin-bottom: clamp(24px, 3.2vw, 44px);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 28px);
}

.grid--12 {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

/* ---------- 6. 索引与分隔装饰 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--amber);
  flex: none;
}

.index-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 46, 34, 0.75);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
  white-space: nowrap;
}

.rule {
  border: 0;
  height: 1px;
  margin-block: clamp(24px, 3vw, 40px);
  background: linear-gradient(90deg, var(--amber) 0 72px, var(--line) 72px 100%);
}

/* ---------- 7. 按钮与胶囊 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease),
    border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.btn:hover { transform: translateY(-2px); }

.btn--solid {
  background: var(--amber);
  color: #0B1F16;
  border-color: var(--amber);
}

.btn--solid:hover { background: #FFC65A; border-color: #FFC65A; }

.btn--ghost {
  background: rgba(14, 46, 34, 0.6);
  color: var(--paper);
  border-color: rgba(53, 224, 192, 0.45);
}

.btn--ghost:hover {
  border-color: var(--amber);
  background: rgba(242, 178, 51, 0.12);
}

.btn--small {
  min-height: 38px;
  padding: 0 18px;
  font-size: 13px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 46, 34, 0.6);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
    background 0.18s var(--ease);
}

.pill:hover { color: var(--paper); border-color: rgba(242, 178, 51, 0.6); }

.pill[aria-pressed="true"],
.pill[data-active] {
  background: rgba(242, 178, 51, 0.16);
  border-color: var(--amber);
  color: var(--amber);
}

/* ---------- 8. 卡片 / 数据 / 图片容器 ---------- */
.card {
  position: relative;
  display: block;
  padding: clamp(18px, 2.2vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(14, 46, 34, 0.92), rgba(9, 33, 24, 0.94));
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(242, 178, 51, 0.65);
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, 0.95);
}

.card__index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--slate);
}

.card__desc {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--slate);
  line-height: 1.7;
}

.stat {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.stat__value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.1;
  color: var(--amber);
}

.stat__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 15% 0%, rgba(31, 122, 77, 0.55) 0%, rgba(14, 46, 34, 0.9) 55%, rgba(7, 30, 22, 0.98) 100%);
}

.media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(53, 224, 192, 0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 224, 192, 0.12) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.media img,
.media video {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.04);
}

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

.media__badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 1;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 30, 22, 0.78);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--paper);
}

/* ---------- 9. 面包屑 / 长文 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

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

.breadcrumbs li + li::before {
  content: "／";
  margin-inline: 9px;
  color: var(--line);
}

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

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

.prose {
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.85;
}

.prose p + p { margin-top: 1.05em; }

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose h2 { margin-top: 1.8em; margin-bottom: 0.6em; }
.prose h3 { margin-top: 1.5em; margin-bottom: 0.5em; }
.prose ul, .prose ol { margin-block: 1em; padding-left: 1.2em; }
.prose ul li { list-style: none; position: relative; padding-left: 1em; }
.prose ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--amber);
}
.prose ol { list-style: decimal; }
.prose ol li { margin-block: 0.4em; }
.prose blockquote {
  margin-block: 1.4em;
  padding: 12px 0 12px 20px;
  border-left: 2px solid var(--amber);
  color: var(--slate);
}

/* ---------- 10. 筛选组件 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.filter-input {
  flex: 1 1 260px;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 46, 34, 0.8);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.filter-input::placeholder { color: rgba(143, 166, 178, 0.8); }

.filter-input:focus-visible {
  border-color: var(--cyan);
  background: rgba(14, 46, 34, 0.95);
}

.empty-state {
  padding: clamp(24px, 4vw, 44px);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--slate);
  text-align: center;
}

/* ---------- 11. 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

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

/* ============================================================
   页头
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  font-family: var(--font-body);
}

/* --- 顶边档案条 --- */
.site-topbar {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: var(--topbar-h);
  padding: 10px var(--gutter);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 30, 22, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(28, 74, 56, 0.9);
}

.site-topbar__brand {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-line {
  margin: 0;
  max-width: none;
  font-family: var(--font-display);
  font-size: clamp(13px, 1.2vw, 15px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-tag {
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--slate);
  white-space: nowrap;
}

.search-chip {
  margin-left: auto;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  padding: 6px 20px;
  border: 1px solid rgba(53, 224, 192, 0.45);
  border-radius: 999px;
  background: rgba(14, 46, 34, 0.72);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease),
    background 0.18s var(--ease);
}

.search-chip:hover {
  transform: translateY(-1px);
  border-color: var(--amber);
  background: rgba(242, 178, 51, 0.12);
}

.search-chip__key {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--paper);
  white-space: nowrap;
}

.search-chip__hint {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--slate);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex: none;
  width: 46px;
  height: 46px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1px solid rgba(143, 166, 178, 0.42);
  border-radius: 14px;
  background: rgba(14, 46, 34, 0.7);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

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

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--paper);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.site-header[data-open] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- 左侧竖向索引轨 --- */
.site-rail {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 95;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 46, 34, 0.97), rgba(7, 30, 22, 0.99));
}

.rail-mark {
  flex: none;
  width: 100%;
  height: var(--topbar-h);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border-bottom: 1px solid var(--line);
  transition: background 0.18s var(--ease);
}

.rail-mark:hover { background: rgba(31, 122, 77, 0.22); }

.rail-mark__glyph {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(242, 178, 51, 0.7);
  border-radius: 11px;
  color: var(--amber);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1;
}

.rail-mark__id {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.site-nav {
  flex: 1 1 auto;
  width: 100%;
  overflow-y: auto;
  padding-block: 8px;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar { display: none; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 13px 4px;
  border-left: 2px solid transparent;
  color: var(--slate);
  transition: color 0.18s var(--ease), background 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: rgba(143, 166, 178, 0.75);
  transition: color 0.18s var(--ease);
}

.site-nav__label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.16em;
}

.site-nav__link:hover {
  color: var(--paper);
  background: rgba(31, 122, 77, 0.2);
}

.site-nav__link:hover .site-nav__num { color: var(--cyan); }

.site-nav__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -6px;
  border-radius: 6px;
}

.site-nav__link[aria-current="page"] {
  color: var(--paper);
  border-left-color: var(--amber);
  background: linear-gradient(90deg, rgba(242, 178, 51, 0.18), rgba(242, 178, 51, 0.02));
}

.site-nav__link[aria-current="page"] .site-nav__num { color: var(--amber); }

.rail-foot {
  flex: none;
  width: 100%;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: center;
}

.rail-foot__tick {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.22em;
  color: rgba(143, 166, 178, 0.7);
}

/* 桌面：为固定索引轨让位 */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

/* ============================================================
   移动 / 平板：索引轨折叠为顶边面板
   ============================================================ */
@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .site-rail {
    top: var(--topbar-h);
    bottom: auto;
    right: 0;
    width: auto;
    max-height: calc(100vh - var(--topbar-h));
    flex-direction: column;
    align-items: stretch;
    overflow-y: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease),
      visibility 0.2s linear;
  }

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

  .rail-mark,
  .rail-foot { display: none; }

  .site-nav {
    flex: none;
    padding: 10px var(--gutter) 18px;
    overflow: visible;
  }

  .site-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px 12px;
  }

  .site-nav__link {
    flex-direction: row;
    justify-content: flex-start;
    gap: 12px;
    padding: 13px 8px;
    border-left: 0;
    border-bottom: 1px dashed rgba(28, 74, 56, 0.95);
    border-radius: 0;
  }

  .site-nav__label {
    writing-mode: horizontal-tb;
    font-size: 14.5px;
    letter-spacing: 0.04em;
  }

  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--amber);
    background: linear-gradient(90deg, rgba(242, 178, 51, 0.16), transparent);
  }
}

@media (max-width: 639px) {
  :root { --topbar-h: 66px; }

  .skip-link { left: 14px; top: calc(var(--topbar-h) + 8px); }

  .search-chip { display: none; }

  .brand-tag { display: none; }

  .site-nav__list { grid-template-columns: 1fr; }

  .site-topbar { gap: 12px; padding-inline: 14px; }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 120px);
  padding-top: clamp(36px, 5vw, 68px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 46, 34, 0.9), rgba(6, 24, 18, 1));
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72px;
  height: 2px;
  background: var(--amber);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.footer-brand__line {
  margin: 0 0 10px;
  max-width: none;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.footer-brand__note {
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.footer-brand__coords {
  margin-top: 16px;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(143, 166, 178, 0.75);
}

.footer-col__title {
  margin: 0 0 14px;
  max-width: none;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber);
}

.footer-col__list { display: flex; flex-direction: column; gap: 2px; }

.footer-col__item { line-height: 1.5; }

.footer-col__link {
  display: inline-block;
  padding-block: 5px;
  font-size: 14.5px;
  color: var(--slate);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer-col__link:hover {
  color: var(--paper);
  transform: translateX(2px);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-underline-offset: 4px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 36px;
  margin-top: clamp(30px, 4vw, 52px);
  padding-block: 22px 30px;
  border-top: 1px dashed var(--line);
}

.footer-legal {
  max-width: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.footer-meta {
  max-width: 58ch;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: rgba(143, 166, 178, 0.88);
}

.footer-rule {
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 26px);
  opacity: 0.9;
}

@media (min-width: 640px) {
  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 960px) {
  .site-footer__grid {
    grid-template-columns: 1.6fr repeat(3, minmax(0, 1fr));
    gap: clamp(28px, 3.4vw, 56px);
  }
}

/* ============================================================
   减少动态
   ============================================================ */
@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;
  }

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

  .card:hover,
  .btn:hover,
  .search-chip:hover,
  .footer-col__link:hover { transform: none; }
}