/* ============================================================
   博九看台 · 共享样式 /assets/site.css
   午夜看台：墨蓝底 / 霓虹青交互 / 暖金周期 / 余烬橙编号
   ============================================================ */

/* ---------- 1. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
h1, h2, h3, h4, p, dl, dd, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 1px; }

/* ---------- 2. tokens ---------- */
:root {
  --ink-900: #060C18;
  --ink-800: #0B1526;
  --ink-700: #152742;
  --paper: #F3E9D8;
  --cyan: #37E7D3;
  --cyan-deep: #1FA98F;
  --gold: #E9B949;
  --ember: #E4572E;
  --text: #EDF2F9;
  --muted: #A9B8CE;
  --line: #24354F;

  --header-h: 76px;
  --rail-w: 72px;

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

  --ease: cubic-bezier(.22, .61, .36, 1);
  --pad-x: clamp(1.25rem, 4vw, 3rem);
}

@media (max-width: 1023px) { :root { --header-h: 62px; } }

/* ---------- 3. base ---------- */
body {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.02vw, 1.06rem);
  line-height: 1.8;
  color: var(--text);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1100px 640px at 12% -12%, rgba(55, 231, 211, 0.11), transparent 62%),
    radial-gradient(820px 520px at 92% 2%, rgba(233, 185, 73, 0.07), transparent 60%);
  background-repeat: no-repeat;
  background-attachment: scroll;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(55, 231, 211, 0.075) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.5;
}

#main-content { position: relative; z-index: 1; padding-top: var(--header-h); }
.site-footer { position: relative; z-index: 1; }

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -140%);
  z-index: 120;
  display: inline-block;
  padding: 0.6rem 1.1rem;
  background: var(--cyan);
  color: #04201C;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 2px 2px;
  transition: transform 0.18s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 4. 版式工具 ---------- */
.wrap {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.grid-12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(1.25rem, 2.5vw, 2rem); }
.col-main { grid-column: 1 / 9; min-width: 0; }
.col-aside { grid-column: 10 / 13; min-width: 0; }
@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-main, .col-aside { grid-column: 1 / -1; }
}

.section { padding-block: clamp(3rem, 7vw, 6rem); }
.section--tight { padding-block: clamp(2rem, 4vw, 3.5rem); }
.section-rule { border-top: 1px solid var(--line); }

.rule { height: 1px; border: 0; background: var(--line); }
.rule--ember { background: linear-gradient(90deg, var(--ember), var(--line) 42%, var(--line)); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--ember); }

.sec-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ember);
}

.display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 5.6vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
}
.h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--text);
}
.h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.08rem, 1.5vw, 1.3rem);
  line-height: 1.35;
  color: var(--text);
}
.lede {
  font-size: clamp(1rem, 1.15vw, 1.15rem);
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
}

.prose { max-width: 66ch; color: var(--muted); }
.prose p { margin-bottom: 1.1em; }
.prose strong { color: var(--text); font-weight: 700; }
.prose ul, .prose ol { margin-bottom: 1.1em; padding-left: 1.35em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.5em; }
.prose a { color: var(--cyan); text-decoration: none; border-bottom: 1px solid rgba(55, 231, 211, 0.4); }
.prose a:hover { border-bottom-color: var(--cyan); }

/* ---------- 5. 按钮 / 标签 / 卡片 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.btn:hover, .btn:focus-visible { border-color: var(--cyan); color: var(--cyan); }
.btn--primary { background: var(--cyan); border-color: var(--cyan); color: #04201C; }
.btn--primary:hover, .btn--primary:focus-visible { background: #5BF0DF; border-color: #5BF0DF; color: #04201C; }
.btn--gold { border-color: rgba(233, 185, 73, 0.65); color: var(--gold); }
.btn--gold:hover, .btn--gold:focus-visible { background: rgba(233, 185, 73, 0.14); border-color: var(--gold); color: var(--gold); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-700);
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.tag--cyan { background: linear-gradient(120deg, var(--cyan-deep), var(--cyan)); border-color: transparent; color: #04201C; font-weight: 700; }
.tag--gold { background: rgba(233, 185, 73, 0.14); border-color: rgba(233, 185, 73, 0.5); color: var(--gold); }

.card {
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: clamp(1.1rem, 2vw, 1.6rem);
  transition: border-color 0.18s var(--ease);
}
.card:hover { border-color: var(--cyan); }
.card--paper { background: var(--paper); border-color: transparent; color: #0A1526; }
.card--paper .card-title { color: #0A1526; }
.card--paper .card-meta { color: #6B5A3E; }
.card--glass {
  background: rgba(21, 39, 66, 0.55);
  border-color: rgba(55, 231, 211, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.02rem, 1.4vw, 1.2rem);
  line-height: 1.4;
  color: var(--text);
}
.card-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- 6. 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2px;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(120% 90% at 20% 0%, rgba(55, 231, 211, 0.16), transparent 62%),
    linear-gradient(160deg, var(--ink-800), var(--ink-700) 55%, var(--ink-800));
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 58%, rgba(6, 12, 24, 0.6));
}
.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }
.media-cap {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- 7. 面包屑 / 滚动信息条 ---------- */
.breadcrumbs { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.16em; }
.crumbs-list { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.crumbs-list a { color: var(--muted); text-decoration: none; border-bottom: 1px solid transparent; transition: color 0.18s var(--ease), border-color 0.18s var(--ease); }
.crumbs-list a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.crumbs-list li + li::before { content: "/"; margin-right: 0.45rem; color: var(--line); }
.crumbs-current { color: var(--text); }

.ticker {
  position: relative;
  overflow: hidden;
  padding-block: 0.7rem;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.ticker-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: ticker-run 28s linear infinite;
}
.ticker-item {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  white-space: nowrap;
}
@keyframes ticker-run {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- 8. 折叠条目 ---------- */
.acc { border-top: 1px solid var(--line); }
.acc-item { border-bottom: 1px solid var(--line); transition: border-color 0.18s var(--ease); }
.acc-item.is-open { border-bottom-color: rgba(233, 185, 73, 0.55); }
.acc-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.1rem 0;
  background: none;
  border: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(0.98rem, 1.2vw, 1.1rem);
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}
.acc-trigger::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--cyan);
  transition: color 0.18s var(--ease);
}
.acc-trigger[aria-expanded="true"] { color: var(--cyan); }
.acc-trigger[aria-expanded="true"]::after { content: "－"; color: var(--gold); }
.acc-panel { padding-bottom: 1.3rem; max-width: 68ch; color: var(--muted); line-height: 1.85; }
.acc-panel[hidden] { display: none; }

/* ---------- 9. 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  background: linear-gradient(180deg, rgba(6, 12, 24, 0.74), rgba(6, 12, 24, 0.26));
  border-bottom: 1px solid rgba(36, 53, 79, 0.7);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease), background-image 0.22s var(--ease);
}
.site-header.is-solid {
  background-color: rgba(11, 21, 38, 0.97);
  background-image: none;
  border-bottom-color: var(--line);
}

.header-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(1rem, 3vw, 2.5rem);
  height: var(--header-h);
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.brand { display: inline-flex; align-items: center; gap: 0.65rem; flex-shrink: 0; text-decoration: none; color: var(--text); }
.brand-chip {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 2px;
  background: var(--ember);
  color: #0A1526;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-mark { font-family: var(--font-display); font-weight: 900; font-size: 1.06rem; letter-spacing: 0.02em; }
.brand-sign { font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.22em; color: var(--muted); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.75rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--text);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle-bars { display: flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle-bars span { display: block; height: 1.5px; background: currentColor; transition: transform 0.2s var(--ease), opacity 0.2s var(--ease); }
.nav-toggle[aria-expanded="true"] { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { transform: translateY(4.5px) 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(-4.5px) rotate(-45deg); }
.nav-toggle-text { font-family: var(--font-mono); }

.site-nav { background: transparent; }
.nav-caption { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.28em; color: var(--muted); }
.nav-list { display: flex; align-items: center; }
.nav-item { list-style: none; }
.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.35rem 0;
  color: var(--muted);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.18s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.08rem;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--ember), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}
.nav-link:hover, .nav-link:focus-visible { color: var(--text); }
.nav-link:hover::after, .nav-link:focus-visible::after { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--cyan); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); background: var(--cyan); }

.nav-aux { display: flex; align-items: center; gap: 0.9rem; }
.nav-aux-link {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav-aux-link:hover, .nav-aux-link:focus-visible { color: var(--cyan); border-bottom-color: var(--cyan); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  color: var(--cyan);
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-cta:hover, .nav-cta:focus-visible { background: var(--cyan); color: #04201C; }

.scroll-track { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; overflow: hidden; }
.scroll-fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--ember), var(--cyan));
  transition: transform 0.12s linear;
}

/* 桌面导航 */
@media (min-width: 1024px) {
  .nav-toggle { display: none; }
  .nav-caption { display: none; }
  .site-nav { display: flex; flex: 1; align-items: center; justify-content: flex-end; gap: clamp(1rem, 2.2vw, 2rem); }
  .nav-list { gap: clamp(0.85rem, 1.6vw, 1.5rem); }
  .nav-link::before { display: none; }
  .nav-aux { padding-left: clamp(0.9rem, 1.8vw, 1.6rem); border-left: 1px solid var(--line); }
}
@media (min-width: 1024px) and (max-width: 1199px) {
  .nav-aux-link { display: none; }
}

/* 移动导航面板 */
@media (max-width: 1023px) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: calc(100vh - var(--header-h));
    height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    padding: clamp(1.25rem, 5vw, 2.5rem) var(--pad-x) 3rem;
    background: rgba(6, 12, 24, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-top: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s var(--ease);
  }
  .site-nav[data-open] { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav-list { flex-direction: column; border-top: 1px solid var(--line); }
  .nav-item { width: 100%; border-bottom: 1px solid var(--line); }
  .nav-link {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    width: 100%;
    padding: 0.95rem 0;
    font-size: 1.05rem;
    color: var(--text);
  }
  .nav-link::after { display: none; }
  .nav-link::before {
    content: attr(data-index);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--ember);
  }
  .nav-link[aria-current="page"] { color: var(--cyan); }
  .nav-aux { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .nav-aux-link { font-size: 0.92rem; }
  .nav-cta { width: 100%; justify-content: center; padding: 0.75rem 1rem; }
}
body.is-nav-open { overflow: hidden; }

/* 竖排注释带（超宽屏） */
.header-rail { display: none; }
@media (min-width: 1400px) {
  .header-rail {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 60;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    border-right: 1px solid var(--line);
    background: rgba(11, 21, 38, 0.55);
    pointer-events: none;
  }
  .rail-mark { writing-mode: vertical-rl; font-family: var(--font-display); font-weight: 900; font-size: 0.95rem; letter-spacing: 0.3em; color: var(--text); }
  .rail-line { width: 1px; height: 56px; background: linear-gradient(180deg, var(--ember), transparent); }
  .rail-meta { writing-mode: vertical-rl; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.24em; color: var(--muted); }
  body { padding-left: var(--rail-w); }
  .site-header { left: var(--rail-w); }
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  margin-top: clamp(3rem, 8vw, 7rem);
  padding-block: clamp(2.5rem, 5vw, 4rem) clamp(1.5rem, 3vw, 2.5rem);
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-bottom: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--line);
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--text);
}
.footer-signoff { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.22em; color: var(--muted); }

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr) minmax(0, 0.8fr) minmax(0, 1.7fr);
  gap: clamp(1.5rem, 3.5vw, 3rem);
  padding-block: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 1023px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-col-title {
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-list { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-link {
  position: relative;
  display: inline-block;
  color: var(--text);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color 0.18s var(--ease);
}
.footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--ember), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s var(--ease);
}
.footer-link:hover, .footer-link:focus-visible { color: var(--cyan); }
.footer-link:hover::after, .footer-link:focus-visible::after { transform: scaleX(1); }

.footer-card {
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  background: var(--paper);
  color: #0A1526;
  border-left: 3px solid var(--gold);
  border-radius: 2px;
}
.footer-card-title {
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: #6B5A3E;
}
.contact-list { display: flex; flex-direction: column; }
.contact-row {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: 0.6rem;
  padding-top: 0.7rem;
  margin-top: 0.7rem;
  border-top: 1px solid rgba(10, 21, 38, 0.14);
  font-size: 0.84rem;
  line-height: 1.65;
}
.contact-row:first-child { padding-top: 0; margin-top: 0; border-top: 0; }
.contact-key { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: #6B5A3E; }
.contact-val { color: #0A1526; word-break: break-word; }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-top: clamp(1.25rem, 2.5vw, 2rem);
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--muted);
}
.footer-copy { font-family: var(--font-mono); letter-spacing: 0.08em; color: var(--muted); }
.footer-note { max-width: 46ch; color: var(--muted); opacity: 0.88; }
.footer-legal { font-family: var(--font-mono); letter-spacing: 0.1em; color: var(--muted); }

/* ---------- 11. 动效与无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .ticker-track { animation: none; }
  .nav-link::after, .footer-link::after { transition: none; }
}