/* =========================================================
   9博体育赛事 · /assets/site.css
   夜场看台 × 技术蓝图：共享外壳、基础组件与数据协议
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: #05080F;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd, table { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --obsidian: #070D1B;
  --charcoal: #12161F;
  --steel: #1D2634;
  --blueprint: #2E3D52;
  --lime: #B6FF3C;
  --amber: #FFB020;
  --orange: #FF5C2B;
  --magenta: #FF3D8A;
  --mist: #E9EEF5;
  --slate: #9AA9BC;
  --slate-dim: #6B7A90;
  --line: rgba(46, 61, 82, .85);
  --grid-line: rgba(46, 61, 82, .9);
  --shell-max: 1320px;
  --shell-wide: 1560px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius-organic: 20px 6px 20px 6px;
  --radius-soft: 14px;
  --font-display: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(.22, .75, .28, 1);
}

/* ---------- 3. 页面基底 ---------- */
body {
  position: relative;
  min-height: 100vh;
  background-color: var(--obsidian);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(90% 60% at 6% -8%, rgba(182, 255, 60, .07), transparent 60%),
    radial-gradient(80% 55% at 98% 2%, rgba(255, 92, 43, .08), transparent 62%),
    linear-gradient(180deg, #080E1C 0%, #070D1B 42%, #05080F 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .22;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ---------- 4. 中文排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: .01em;
  color: var(--mist);
}
h1 { font-size: clamp(40px, 7vw, 88px); letter-spacing: -.005em; }
h2 { font-size: clamp(28px, 3.6vw, 46px); }
h3 { font-size: clamp(21px, 2.2vw, 30px); }
h4 { font-size: clamp(18px, 1.7vw, 22px); }
p { line-height: 1.78; }
p + p { margin-top: .9em; }
strong { color: var(--mist); font-weight: 700; }
.mono, time, code, kbd { font-family: var(--font-mono); letter-spacing: .04em; }
.is-tilted { display: inline-block; transform: skewX(-2.5deg); }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -70px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  padding: 10px 22px;
  border-radius: 0 0 var(--radius-soft) var(--radius-soft);
  background: var(--lime);
  color: #070D1B;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 5. 容器与网格 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--wide { max-width: var(--shell-wide); }
.section { padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-12 { grid-column: span 12; }
@media (max-width: 900px) {
  .col-2, .col-3, .col-4, .col-5, .col-6 { grid-column: span 6; }
  .col-7, .col-8, .col-9, .col-10 { grid-column: span 12; }
}
@media (max-width: 620px) {
  .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-12 { grid-column: 1 / -1; }
}

/* ---------- 6. 章节标题与标签 ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 10px clamp(12px, 2vw, 28px);
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--lime);
  padding-bottom: 8px;
}
.section-head__title { font-size: clamp(24px, 3vw, 40px); }
.section-head__note {
  margin-left: auto;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--slate);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--lime);
  flex: 0 0 auto;
}

/* ---------- 7. 按钮与标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .16s var(--ease), color .16s var(--ease),
              border-color .16s var(--ease), transform .16s var(--ease);
}
.btn--lime {
  background: var(--lime);
  color: #070D1B;
}
.btn--lime:hover { background: #C9FF66; transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--mist);
  border-color: var(--blueprint);
}
.btn--ghost:hover {
  color: var(--lime);
  border-color: var(--lime);
}
.btn--sm {
  min-height: 36px;
  padding: 0 16px;
  font-size: 12.5px;
  letter-spacing: .12em;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 22, 31, .72);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  white-space: nowrap;
}
.chip--lime { color: var(--lime); border-color: rgba(182, 255, 60, .38); background: rgba(182, 255, 60, .08); }
.chip--amber { color: var(--amber); border-color: rgba(255, 176, 32, .38); background: rgba(255, 176, 32, .08); }
.chip--orange { color: var(--orange); border-color: rgba(255, 92, 43, .38); background: rgba(255, 92, 43, .08); }
.chip--magenta { color: var(--magenta); border-color: rgba(255, 61, 138, .42); background: rgba(255, 61, 138, .1); }

/* ---------- 8. 图片容器（页面阶段放图或占位） ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  background:
    linear-gradient(135deg, #101728 0%, #0A0F1C 60%, #12161F 100%);
}
.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46, 61, 82, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 61, 82, .55) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: .5;
  pointer-events: none;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .35;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(7, 13, 27, .55) 0 1px,
    transparent 1px 3px
  );
}
.media-frame__img,
.media-frame > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--bleed {
  border-radius: 0;
  border-left: 0;
  border-right: 0;
}
.media-frame__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
}
.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  padding: 28px 18px 14px;
  background: linear-gradient(180deg, rgba(5, 8, 15, 0) 0%, rgba(5, 8, 15, .92) 100%);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  line-height: 1.6;
}

/* ---------- 9. 数据条 / 时间轴 / 看板 ---------- */
.databar {
  width: 100%;
  height: 10px;
  overflow: hidden;
  border: 1px solid rgba(46, 61, 82, .7);
  border-radius: 999px;
  background: var(--steel);
}
.databar__fill {
  display: block;
  width: 0;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--lime), var(--amber));
  transition: width .9s var(--ease);
}
.databar--orange .databar__fill {
  background: linear-gradient(90deg, var(--orange), var(--magenta));
}

.timeline {
  position: relative;
  display: grid;
  gap: 28px;
  padding-left: 26px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime), var(--blueprint));
}
.timeline__item { position: relative; }
.timeline__dot {
  position: absolute;
  left: -26px;
  top: 7px;
  width: 13px;
  height: 13px;
  border: 2px solid var(--lime);
  border-radius: 50%;
  background: var(--obsidian);
  transition: transform .16s var(--ease), box-shadow .16s var(--ease);
}
.timeline__item:hover .timeline__dot,
.timeline__item:focus-within .timeline__dot {
  transform: scale(1.04);
  box-shadow: 0 0 0 6px rgba(182, 255, 60, .14);
}
.timeline__time {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--lime);
}

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--lime);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--slate);
}

.panel {
  padding: clamp(18px, 2.4vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius-organic);
  background: linear-gradient(160deg, rgba(18, 22, 31, .96), rgba(9, 13, 22, .96));
}
.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--blueprint), rgba(46, 61, 82, 0));
}

/* ---------- 10. 正文与面包屑 ---------- */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.78;
  color: #C7D2E0;
}
.prose h2,
.prose h3 { margin-top: 1.5em; margin-bottom: .5em; }
.prose ul,
.prose ol { margin: 1em 0; padding-left: 1.2em; }
.prose li { margin-bottom: .4em; list-style: disc; }
.prose a {
  color: var(--lime);
  border-bottom: 1px solid rgba(182, 255, 60, .45);
  transition: border-color .16s var(--ease);
}
.prose a:hover { border-bottom-color: var(--lime); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--slate);
}
.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--blueprint);
}
.breadcrumb a {
  color: var(--slate);
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.breadcrumb a:hover { color: var(--lime); border-bottom-color: var(--lime); }
.breadcrumb [aria-current="page"] { color: var(--mist); }

/* ---------- 11. 显现 ---------- */
html.js-reveal .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}
html.js-reveal .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 页头 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  isolation: isolate;
  overflow: hidden;
  background: rgba(7, 13, 27, .94);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .38;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(140% 130% at 50% -25%, #000 32%, transparent 78%);
  mask-image: radial-gradient(140% 130% at 50% -25%, #000 32%, transparent 78%);
}
.masthead__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 16px var(--gutter) 0;
}
.masthead__utility {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  line-height: 1.6;
  color: var(--slate);
}
.masthead__identity {
  display: grid;
  justify-items: center;
  gap: 6px;
  text-align: center;
}
.masthead__brand {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1;
  letter-spacing: .05em;
  color: var(--mist);
  white-space: nowrap;
  transition: color .16s var(--ease);
}
.masthead__brand-mark { color: var(--lime); }
.masthead__brand:hover { color: #FFFFFF; }
.masthead__sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .3em;
  color: var(--slate-dim);
}
.masthead__side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  min-width: 0;
}
.slotboard {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(29, 38, 52, .95), rgba(18, 22, 31, .95));
}
.slotboard__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--slate);
}
.slotboard__value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--lime);
  line-height: 1;
}

/* ---------- 13. 导航 ---------- */
.nav {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 14px;
  border-top: 1px solid rgba(46, 61, 82, .55);
}
.nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 clamp(6px, 1.8vw, 28px);
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: 0 var(--gutter);
}
.nav__item { display: flex; }
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 13px 2px 15px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--slate);
  transition: color .16s var(--ease);
}
.nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--blueprint);
  transition: color .16s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}
.nav__link:hover,
.nav__link:focus-visible { color: var(--mist); }
.nav__link:hover .nav__idx,
.nav__link:focus-visible .nav__idx { color: var(--lime); }
.nav__link:hover::after,
.nav__link:focus-visible::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--lime); }
.nav__link[aria-current="page"] .nav__idx { color: var(--lime); }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin: 12px auto;
  padding: 10px 20px;
  border: 1px solid var(--blueprint);
  border-radius: 999px;
  background: rgba(29, 38, 52, .75);
  color: var(--mist);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .16em;
  transition: border-color .16s var(--ease), color .16s var(--ease);
}
.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }
.nav-toggle__icon {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .18s var(--ease);
}
.nav-toggle__icon::before { top: -5px; }
.nav-toggle__icon::after { top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-5px) rotate(-45deg); }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--lime), var(--amber) 68%, var(--orange));
  pointer-events: none;
}

@media (max-width: 900px) {
  .masthead__inner {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-top: 14px;
  }
  .masthead__identity { order: 1; }
  .masthead__side {
    order: 2;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px 14px;
  }
  .masthead__utility { order: 3; text-align: center; }
  .nav-toggle { display: inline-flex; }
  .nav__list {
    display: none;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding-bottom: 10px;
  }
  .nav[data-open] .nav__list { display: flex; }
  .nav__item {
    width: 100%;
    justify-content: center;
    border-top: 1px solid rgba(46, 61, 82, .45);
  }
  .nav__item:first-child { border-top: 0; }
  .nav__link {
    width: 100%;
    justify-content: center;
    padding: 13px 8px;
  }
  .nav__link::after { bottom: 6px; }
  .scroll-progress { height: 2px; }
}

/* ---------- 14. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(56px, 9vw, 110px);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(110% 80% at 6% -18%, rgba(182, 255, 60, .09), transparent 58%),
    radial-gradient(90% 70% at 100% 0%, rgba(255, 92, 43, .09), transparent 55%),
    linear-gradient(180deg, #0A111F 0%, #05080F 100%);
  color: var(--slate);
  font-size: 14.5px;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .3;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}
.site-footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.35fr .75fr .75fr 1.15fr;
  gap: clamp(26px, 3.6vw, 56px);
  padding-block: clamp(40px, 6vw, 76px) clamp(28px, 4vw, 48px);
}
.site-footer__brand { min-width: 0; }
.site-footer__logo {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.1;
  letter-spacing: .05em;
  color: var(--mist);
  transition: color .16s var(--ease);
}
.site-footer__logo span { color: var(--lime); }
.site-footer__logo:hover { color: #FFFFFF; }
.site-footer__claim {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}
.site-footer__slots {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin-top: 16px;
  padding: 8px 14px;
  border: 1px dashed rgba(182, 255, 60, .38);
  border-radius: var(--radius-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--lime);
}
.site-footer .site-footer__title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .24em;
  color: var(--lime);
}
.footer-list { display: grid; gap: 2px; }
.footer-link {
  position: relative;
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--slate);
  transition: color .16s var(--ease);
}
.footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 1px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible { color: var(--mist); }
.footer-link:hover::after,
.footer-link:focus-visible::after { transform: scaleX(1); }

.contact-line {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 5px 0;
  font-size: 13.5px;
  line-height: 1.65;
}
.contact-line__label {
  flex: 0 0 46px;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--slate-dim);
}
.contact-line__value {
  color: var(--mist);
  word-break: break-word;
}
.site-footer__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-dim);
}
.site-footer__col--contact .btn { margin-top: 16px; }

.site-footer__base {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  padding-block: 20px 30px;
  border-top: 1px solid rgba(46, 61, 82, .55);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--slate-dim);
}
.site-footer__base .footer-link { font-size: 12.5px; padding: 0; }

@media (max-width: 1080px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .site-footer__grid { grid-template-columns: 1fr; gap: 34px; }
  .site-footer__base { justify-content: flex-start; }
}

/* ---------- 15. 降低动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html.js-reveal .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  .databar__fill { transition: none !important; }
  .btn--lime:hover { transform: none; }
}