/* ============================================================
   必发体育 · 共享样式表  /assets/site.css
   视觉基线：深夜墨绿分析室 / 荧光青数据 / 暖琥珀档位 / 补时脉冲红
   ============================================================ */

:root {
  --ink: #0A1A14;
  --ink-deep: #050E0A;
  --turf: #12382B;
  --paper: #F1E7D6;
  --cyan: #38E1C4;
  --cyan-deep: #1B9C86;
  --amber: #F0A63A;
  --pulse: #FF3D55;
  --moss: #93A398;
  --moss-dark: #5C6B62;
  --line-white: #FBFFFD;

  --rail-w: 88px;
  --bar-h: 60px;

  --font-head: "Noto Sans SC Condensed", "Source Han Sans CN Heavy", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "Noto Sans Mono CJK SC", ui-monospace, SFMono-Regular, Menlo, monospace;

  --glow: 0 0 24px rgba(56, 225, 196, 0.32);
  --glow-amber: 0 0 24px rgba(240, 166, 58, 0.3);
  --glow-pulse: 0 0 22px rgba(255, 61, 85, 0.42);

  --ease: 120ms cubic-bezier(.3, .7, .4, 1);
  --maxw: 1440px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  padding-top: var(--bar-h);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(56, 225, 196, 0.035) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(5, 14, 10, 0.55) 0 1px, transparent 1px 92px);
}
img, svg, video { display: block; max-width: 100%; height: auto; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
a { color: var(--cyan); text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; }
table { border-collapse: collapse; }

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

/* ---------- 中文排版与层级 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.2rem, 5.4vw, 4.2rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.8rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); font-weight: 800; letter-spacing: 0; }
p { font-size: 15px; line-height: 1.75; }

.h-display {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 6.4rem);
  line-height: 0.94;
  letter-spacing: -0.03em;
  overflow-wrap: anywhere;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-style: italic;
  letter-spacing: 0.18em;
  color: var(--cyan);
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--cyan); }
.note {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--moss);
  letter-spacing: 0.01em;
}
.lead { font-size: clamp(15px, 1.4vw, 17px); line-height: 1.8; max-width: 64ch; }
.num { color: var(--amber); font-weight: 700; text-shadow: var(--glow-amber); }
.num--cyan { color: var(--cyan); text-shadow: var(--glow); }

.tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--cyan-deep);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.tag--amber { border-color: var(--amber); color: var(--amber); }

.u-link {
  color: var(--cyan);
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size var(--ease), color var(--ease);
}
.u-link:hover, .u-link:focus-visible { background-size: 100% 1px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border: 2px solid var(--cyan);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: 6px 6px 0 var(--ink-deep);
  transition: background-color var(--ease), color var(--ease), box-shadow var(--ease), border-color var(--ease), transform var(--ease);
}
.btn:hover, .btn:focus-visible {
  background: var(--cyan);
  color: var(--ink-deep);
  box-shadow: 10px 10px 0 var(--ink-deep);
}
.btn:active { transform: translate(2px, 2px); box-shadow: 4px 4px 0 var(--ink-deep); }
.btn--solid { background: var(--cyan); color: var(--ink-deep); }
.btn--solid:hover, .btn--solid:focus-visible { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.btn--amber { border-color: var(--amber); color: var(--amber); }
.btn--amber:hover, .btn--amber:focus-visible { background: var(--amber); color: var(--ink-deep); }
.btn--ghost { border-color: var(--turf); color: var(--paper); }
.btn--ghost:hover, .btn--ghost:focus-visible { background: var(--turf); border-color: var(--cyan); color: var(--cyan); }

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12.5px;
  font-style: italic;
  letter-spacing: 0.04em;
  color: var(--moss);
}
.crumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.crumbs__link { color: var(--moss); transition: color var(--ease); }
.crumbs__link:hover, .crumbs__link:focus-visible { color: var(--cyan); }
.crumbs__sep { color: rgba(56, 225, 196, 0.45); }
.crumbs__current { color: var(--paper); font-style: normal; }

/* ---------- 容器与网格 ---------- */
.shell {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}
.grid { display: grid; gap: 24px; grid-template-columns: 1fr; }
.col-3, .col-4, .col-5, .col-7, .col-8, .col-12, .col-note { grid-column: span 1; }

@media (min-width: 768px) {
  .shell { padding: 0 32px; }
  .grid { grid-template-columns: repeat(6, 1fr); }
  .col-3 { grid-column: span 3; }
  .col-4 { grid-column: span 3; }
  .col-5 { grid-column: span 3; }
  .col-7 { grid-column: span 3; }
  .col-8 { grid-column: span 6; }
  .col-12 { grid-column: span 6; }
  .col-note { grid-column: span 2; }
}

@media (min-width: 1024px) {
  .shell { padding: 0 40px 0 48px; }
  .grid { grid-template-columns: repeat(12, 1fr); }
  .col-3 { grid-column: span 3; }
  .col-4 { grid-column: span 4; }
  .col-5 { grid-column: span 5; }
  .col-7 { grid-column: span 7; }
  .col-8 { grid-column: span 8; }
  .col-12 { grid-column: span 12; }
  .col-note { grid-column: span 2; }
}

/* ---------- 编号章节 ---------- */
.chapter {
  position: relative;
  padding: clamp(48px, 7vw, 96px) 0;
  border-top: 2px solid var(--turf);
}
.chapter__num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(3.4rem, 11vw, 8.5rem);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: rgba(56, 225, 196, 0.16);
  -webkit-text-stroke: 2px var(--cyan-deep);
}
.chapter__title { margin-top: 10px; }
.chapter__lead { margin-top: 14px; color: #D9D2C4; }
.chapter__note { margin-top: 18px; }

/* ---------- 数据块 ---------- */
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat__value {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--amber);
  text-shadow: var(--glow-amber);
}
.stat__value--cyan { color: var(--cyan); text-shadow: var(--glow); }
.stat__label { font-size: 12.5px; font-style: italic; letter-spacing: 0.08em; color: var(--moss); }

/* ---------- 面板 ---------- */
.panel {
  background: var(--turf);
  border: 2px solid var(--turf);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: 6px 6px 0 var(--ink-deep);
  transition: border-color var(--ease), box-shadow var(--ease), background-color var(--ease);
}
.panel:hover {
  border-color: var(--cyan);
  box-shadow: 10px 10px 0 var(--ink-deep), inset 0 0 0 2px var(--cyan);
}
.panel--paper { background: var(--paper); border-color: var(--ink-deep); color: var(--ink); }
.panel--paper .note, .panel--paper .stat__label { color: var(--moss-dark); }
.panel--flat { box-shadow: none; background: transparent; border-color: var(--turf); }

/* ---------- 行式数据 ---------- */
.data-list { border-top: 2px solid var(--turf); }
.data-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(147, 163, 152, 0.22);
  transition: background-color var(--ease), color var(--ease);
}
.data-row:hover { background: var(--turf); }
.data-row:hover .data-row__v { color: var(--amber); }
.data-row__k { font-size: 13px; color: var(--moss); letter-spacing: 0.04em; }
.data-row__v { font-weight: 700; overflow-wrap: anywhere; }

/* ---------- 表格 ---------- */
.data-table { width: 100%; font-size: 14px; }
.data-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 2px solid var(--turf);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--moss);
}
.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid rgba(147, 163, 152, 0.2);
  vertical-align: top;
}
.data-table tbody tr { transition: background-color var(--ease); }
.data-table tbody tr:hover { background: var(--turf); }
.data-table td.is-key { color: var(--amber); font-weight: 700; }

/* ---------- 折叠 ---------- */
details { border-top: 1px solid rgba(147, 163, 152, 0.25); }
details[open] { box-shadow: inset 3px 0 0 var(--amber); }
summary {
  position: relative;
  padding: 14px 0 14px 20px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
summary::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
  transition: color var(--ease);
}
details[open] > summary::before { content: "–"; color: var(--amber); }

/* ---------- 图片容器（页面阶段放 <img>） ---------- */
.media-figure { margin: 0; }
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--turf);
  border: 2px solid var(--turf);
  box-shadow: 6px 6px 0 var(--ink-deep);
  transition: border-color var(--ease), box-shadow var(--ease);
}
.media:hover { border-color: var(--cyan); box-shadow: 10px 10px 0 var(--ink-deep), inset 0 0 0 2px var(--cyan); }
.media img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.88) contrast(1.06) brightness(0.94); }
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(5, 14, 10, 0.18) 0 1px, transparent 1px 3px);
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  padding: 6px 10px;
  background: var(--ink-deep);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.media__cap { margin-top: 10px; font-size: 12.5px; font-style: italic; color: var(--moss); }

/* ---------- 补时脉冲 ---------- */
.pulse-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border: 2px solid var(--pulse);
  background: linear-gradient(90deg, rgba(255, 61, 85, 0.26), rgba(255, 61, 85, 0.04));
  color: var(--pulse);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 0 0 0 rgba(255, 61, 85, 0.4);
  animation: breathe 1.6s ease-in-out infinite;
}
.pulse-tag:hover { animation: none; box-shadow: var(--glow-pulse); }
@keyframes breathe {
  0%, 100% { border-color: var(--pulse); box-shadow: 0 0 0 0 rgba(255, 61, 85, 0.42); }
  50% { border-color: rgba(255, 61, 85, 0.5); box-shadow: 0 0 22px 2px rgba(255, 61, 85, 0.38); }
}

/* ---------- 显现协议 ---------- */
html.js-on [data-reveal] { opacity: 0; transform: translateY(16px); }
html.js-on [data-reveal].is-in { opacity: 1; transform: none; transition: opacity 240ms ease, transform 240ms ease; }

/* ============================================================
   共享头部：左侧 88px 纵向轨道（移动端折叠为顶部状态条 + 抽屉）
   ============================================================ */
.site-rail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--bar-h);
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 14px;
  background: var(--ink-deep);
  border-bottom: 2px solid var(--turf);
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 12px;
  z-index: 90;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink-deep);
  font-weight: 700;
  border: 2px solid var(--ink-deep);
  box-shadow: 6px 6px 0 rgba(5, 14, 10, 0.9);
  transition: top 160ms ease;
}
.skip-link:focus { top: 12px; }

.rail-head { display: flex; align-items: center; gap: 12px; min-width: 0; }
.rail-brand { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.rail-brand__mark {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--paper);
  white-space: nowrap;
}
.rail-brand__line { display: none; }

.rail-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 8px;
  border: 1px solid var(--turf);
  color: var(--moss);
  font-size: 12px;
  white-space: nowrap;
  transition: border-color var(--ease), color var(--ease);
}
.rail-status:hover, .rail-status:focus-visible { border-color: var(--cyan-deep); color: var(--cyan); }
.rail-status__dot {
  width: 9px;
  height: 9px;
  background: var(--cyan);
  box-shadow: var(--glow);
  animation: dot-breathe 2.4s ease-in-out infinite;
}
@keyframes dot-breathe { 0%, 100% { opacity: 1; } 50% { opacity: 0.38; } }
.rail-status__text { letter-spacing: 0.08em; }

.rail-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  border: 2px solid var(--turf);
  color: var(--paper);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: border-color var(--ease), background-color var(--ease);
}
.rail-toggle:hover { border-color: var(--cyan-deep); background: var(--turf); }
.rail-toggle__bars { position: relative; display: block; width: 18px; height: 12px; }
.rail-toggle__bars::before,
.rail-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  transition: transform 160ms ease, top 160ms ease;
}
.rail-toggle__bars::before { top: 1px; }
.rail-toggle__bars::after { top: 9px; }
.rail-toggle[aria-expanded="true"] .rail-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.rail-toggle[aria-expanded="true"] .rail-toggle__bars::after { top: 5px; transform: rotate(-45deg); }
.rail-toggle__label { line-height: 1; }

.rail-nav {
  position: fixed;
  top: var(--bar-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 55;
  padding: 16px 14px 40px;
  background: var(--ink);
  border-top: 2px solid var(--turf);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
}
[data-nav][data-open] { opacity: 1; visibility: visible; transform: translateY(0); }

.rail-nav__list { display: flex; flex-direction: column; }
.rail-nav__item { border-bottom: 1px solid rgba(147, 163, 152, 0.18); }
.rail-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 8px 15px 17px;
  color: var(--paper);
  font-weight: 700;
  transition: color var(--ease), background-color var(--ease);
}
.rail-nav__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background: transparent;
  transition: background-color var(--ease), box-shadow var(--ease);
}
.rail-nav__link[aria-current="page"] { color: var(--cyan); }
.rail-nav__link[aria-current="page"]::before { background: var(--cyan); box-shadow: var(--glow); }
.rail-nav__idx { font-size: 11.5px; letter-spacing: 0.12em; color: var(--moss); }
.rail-nav__link[aria-current="page"] .rail-nav__idx { color: var(--cyan); }
.rail-nav__label {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.rail-nav__foot {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 26px;
}
.rail-nav__hint { font-size: 11.5px; font-style: italic; letter-spacing: 0.12em; color: var(--moss); }
.rail-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 18px;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 6px 6px 0 var(--ink-deep);
  transition: background-color var(--ease), color var(--ease), box-shadow var(--ease);
}
.rail-nav__cta:hover, .rail-nav__cta:focus-visible {
  background: var(--cyan);
  color: var(--ink-deep);
  box-shadow: 10px 10px 0 var(--ink-deep);
}

.rail-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--turf);
}
.rail-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  transform-origin: left center;
  transform: scaleX(var(--sp, 0));
  transition: transform 80ms linear;
}

/* ---------- 桌面：真正的纵向轨道 ---------- */
@media (min-width: 1024px) {
  body { padding-top: 0; padding-left: var(--rail-w); }
  .site-rail {
    top: 0;
    bottom: 0;
    right: auto;
    width: var(--rail-w);
    height: auto;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 18px;
    padding: 22px 0 20px;
    border-bottom: 0;
    border-right: 2px solid var(--turf);
    overflow: hidden;
  }
  .rail-head { flex-direction: column; align-items: center; gap: 16px; }
  .rail-brand { align-items: center; }
  .rail-brand__mark { writing-mode: vertical-rl; font-size: 1.05rem; letter-spacing: 0.3em; }
  .rail-brand__line {
    display: block;
    writing-mode: vertical-rl;
    font-size: 11.5px;
    font-style: italic;
    letter-spacing: 0.24em;
    color: var(--moss);
  }
  .rail-status {
    flex-direction: column;
    gap: 8px;
    padding: 8px 5px;
    font-size: 11.5px;
    letter-spacing: 0.2em;
  }
  .rail-status__text { writing-mode: vertical-rl; }
  .rail-toggle { display: none; }

  .rail-nav {
    position: static;
    flex: 1 1 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    padding: 0;
    background: transparent;
    border: 0;
    overflow: visible;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .rail-nav__list { width: 100%; }
  .rail-nav__item { position: relative; border-bottom: 0; }
  .rail-nav__link {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 12px 0;
    color: var(--moss);
  }
  .rail-nav__link::before { top: 0; bottom: 0; }
  .rail-nav__link:hover, .rail-nav__link:focus-visible { color: var(--paper); background: rgba(18, 56, 43, 0.7); }
  .rail-nav__link:hover::before, .rail-nav__link:focus-visible::before { background: var(--cyan-deep); }
  .rail-nav__link[aria-current="page"] { color: var(--cyan); background: var(--turf); text-shadow: var(--glow); }
  .rail-nav__idx { font-size: 11px; }
  .rail-nav__label {
    position: absolute;
    left: calc(100% + 14px);
    top: 50%;
    z-index: 65;
    padding: 6px 12px;
    background: var(--cyan);
    color: var(--ink-deep);
    font-family: var(--font-mono);
    font-size: 13px;
    box-shadow: 4px 4px 0 var(--ink-deep);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translate(-6px, -50%);
    transition: opacity 140ms ease, transform 140ms ease;
  }
  .rail-nav__link:hover .rail-nav__label,
  .rail-nav__link:focus-visible .rail-nav__label { opacity: 1; transform: translate(0, -50%); }

  .rail-nav__foot { align-items: center; gap: 10px; margin-top: 0; padding: 0 6px 4px; }
  .rail-nav__hint { font-size: 10.5px; letter-spacing: 0.06em; }
  .rail-nav__cta { writing-mode: vertical-rl; padding: 16px 9px; font-size: 12px; letter-spacing: 0.22em; }

  .rail-progress { left: auto; right: 0; top: 0; bottom: 0; width: 4px; height: auto; }
  .rail-progress__bar {
    background: linear-gradient(180deg, var(--cyan), var(--amber));
    transform-origin: top center;
    transform: scaleY(var(--sp, 0));
  }
}

/* ============================================================
   共享页脚：地平线 + 风向刻度 + 资料索引
   ============================================================ */
.site-foot {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  padding: clamp(36px, 6vw, 72px) 0 0;
  background: var(--ink-deep);
  border-top: 2px solid var(--turf);
  color: var(--moss);
}
.foot-sky {
  position: relative;
  height: 58px;
  margin-bottom: clamp(26px, 4vw, 44px);
  background: linear-gradient(180deg, rgba(56, 225, 196, 0.06), rgba(5, 14, 10, 0));
  overflow: hidden;
}
.foot-sky::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 11px;
  background-image: repeating-linear-gradient(90deg, rgba(147, 163, 152, 0.5) 0 1px, transparent 1px 13px);
}
.foot-sky::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 11px;
  height: 1px;
  background: linear-gradient(90deg, rgba(56, 225, 196, 0.55), rgba(147, 163, 152, 0.18) 70%);
}

.foot-grid { display: grid; gap: 28px; grid-template-columns: 1fr; }

.foot-brand__mark {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  color: var(--paper);
}
.foot-brand__mark:hover, .foot-brand__mark:focus-visible { color: var(--cyan); }
.foot-brand__line { margin-top: 8px; font-size: 13px; letter-spacing: 0.14em; color: var(--cyan); }
.foot-brand__note { margin-top: 10px; font-size: 12.5px; font-style: italic; color: var(--moss); }

.foot-col__title {
  padding-bottom: 8px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(147, 163, 152, 0.28);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--paper);
}
.foot-list { display: flex; flex-direction: column; gap: 9px; }
.foot-list__item { display: block; }
.foot-link {
  display: inline-block;
  font-size: 14px;
  color: var(--moss);
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size var(--ease), color var(--ease);
}
.foot-link:hover, .foot-link:focus-visible { color: var(--cyan); background-size: 100% 1px; }

.foot-meta { display: flex; flex-direction: column; gap: 2px; margin-bottom: 12px; }
.foot-meta__label { font-size: 11.5px; font-style: italic; letter-spacing: 0.14em; color: var(--cyan-deep); }
.foot-meta__value { font-size: 13.5px; color: var(--paper); overflow-wrap: anywhere; }

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  align-items: baseline;
  margin-top: clamp(28px, 4vw, 48px);
  padding: 22px 0 30px;
  border-top: 1px solid rgba(147, 163, 152, 0.2);
}
.foot-region { font-size: 12.5px; font-style: italic; color: var(--moss); max-width: 56ch; }
.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--moss);
}
.foot-legal__item { white-space: nowrap; }
.foot-legal__sep { color: rgba(56, 225, 196, 0.45); }

@media (min-width: 768px) {
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .foot-brand { grid-column: span 2; }
}
@media (min-width: 1024px) {
  .foot-grid { grid-template-columns: 1.5fr 1fr 1fr 0.9fr 1.4fr; gap: 32px 28px; }
  .foot-brand { grid-column: auto; }
}

/* ============================================================
   无障碍与动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
  html.js-on [data-reveal] { opacity: 1; transform: none; }
  .pulse-tag { box-shadow: var(--glow-pulse); }
}