/* =========================================================
   playbook-biyi.com.cn · /assets/site.css
   共享外壳：侧轨头部 / 页脚 / 基础组件
   ========================================================= */

/* 1 ─ Reset ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
[hidden] { display: none !important; }

/* 2 ─ 令牌 -------------------------------------------------- */
:root {
  --ink-900: #04211B;
  --ink-800: #072E26;
  --coal-950: #0B0F0E;
  --coal-700: #1C2321;
  --lime-400: #B8FF3C;
  --lime-200: #DFFFA8;
  --orange-500: #FF6A21;
  --paper-100: #F2EDE2;
  --paper-300: #D9D2C2;
  --gray-400: #8B9A94;
  --white-050: #F5FBF8;

  --bg: var(--ink-900);
  --fg: var(--white-050);
  --hair: 1px solid var(--coal-700);

  --rail-w: 104px;
  --bar-h: 58px;
  --wrap-max: 1220px;
  --gutter: clamp(18px, 4vw, 56px);
  --measure: 34em;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", "Roboto Mono", Menlo, Consolas, "Courier New", monospace;
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", Georgia, "Times New Roman", serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* 3 ─ 基础排版 ---------------------------------------------- */
body {
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .012em;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.is-nav-open { overflow: hidden; }
::selection { background: var(--lime-400); color: var(--ink-900); }

h1, h2, h3, h4 { line-height: 1.24; font-weight: 400; letter-spacing: -.018em; }
h1 { font-size: clamp(34px, 6vw, 76px); font-weight: 300; }
h2 { font-size: clamp(24px, 3.4vw, 40px); font-weight: 300; }
h3 { font-size: clamp(17px, 2vw, 24px); font-weight: 500; letter-spacing: -.01em; }
p { overflow-wrap: break-word; }

:focus-visible { outline: 2px solid var(--lime-400); outline-offset: 3px; }

/* 4 ─ 通用文字件 -------------------------------------------- */
.display {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(44px, 9vw, 148px);
  line-height: .9;
  letter-spacing: -.03em;
  font-stretch: 88%;
}
.score-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
  font-size: clamp(28px, 5vw, 64px);
  line-height: 1;
  color: var(--lime-400);
}
.index-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gray-400);
}
.prose { max-width: var(--measure); font-size: 17px; line-height: 1.9; color: var(--white-050); }
.prose p + p { margin-top: 1.05em; }
.prose h2 { margin: 1.6em 0 .6em; }
.prose h3 { margin: 1.4em 0 .5em; }
.prose strong { color: var(--lime-200); font-weight: 600; }

/* 5 ─ 版心与网格 -------------------------------------------- */
.wrap { width: 100%; max-width: var(--wrap-max); margin-inline: auto; padding-inline: var(--gutter); }
.grid { display: grid; gap: clamp(18px, 2.6vw, 34px); }
.grid--12 { grid-template-columns: 1fr; }
.col-4, .col-5, .col-6, .col-7, .col-8, .col-12 { grid-column: span 1; }

@media (min-width: 760px) {
  .grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .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-12 { grid-column: span 12; }
  .push-1 { grid-column-start: 2; }
}

/* 6 ─ Skip link --------------------------------------------- */
.skip-link {
  position: fixed;
  left: 10px;
  top: 10px;
  z-index: 300;
  transform: translateY(-160%);
  background: var(--lime-400);
  color: var(--ink-900);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  transition: transform .18s var(--ease);
}
.skip-link:focus { transform: none; }

/* 7 ─ 头部：移动端顶栏 -------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink-800);
  border-bottom: var(--hair);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  min-height: var(--bar-h);
  padding: 10px var(--gutter);
}
.rail-meter { display: none; }

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand__mark {
  flex: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lime-400);
  color: var(--lime-400);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -.02em;
  background: linear-gradient(150deg, rgba(184, 255, 60, .16), rgba(184, 255, 60, 0) 70%);
}
.brand__text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.brand__name { font-size: 15px; font-weight: 600; letter-spacing: .07em; color: var(--white-050); line-height: 1.2; }
.brand__line { display: none; font-family: var(--font-mono); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; color: var(--gray-400); line-height: 1.6; }

.header-status { display: none; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--lime-200); }
.header-status__dot { width: 6px; height: 6px; flex: none; background: var(--lime-400); box-shadow: 0 0 0 3px rgba(184, 255, 60, .16); }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--coal-700);
  color: var(--lime-400);
  font-size: 12px;
  letter-spacing: .16em;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.nav-toggle:hover { border-color: var(--lime-400); }
.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bars span { display: block; height: 1.5px; background: currentColor; transition: transform .2s var(--ease), opacity .2s var(--ease); }
.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); }

@media (min-width: 560px) and (max-width: 899px) { .header-status { display: inline-flex; } }

/* 8 ─ 头部：移动端抽屉导航 ---------------------------------- */
.site-nav {
  position: fixed;
  left: 0;
  right: 0;
  top: var(--bar-h);
  bottom: 0;
  z-index: 89;
  display: flex;
  flex-direction: column;
  padding: 22px var(--gutter) 40px;
  background: linear-gradient(180deg, #072E26 0%, #04211B 55%, #0B0F0E 100%);
  border-top: var(--hair);
  overflow-y: auto;
  overscroll-behavior: contain;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate3d(0, -10px, 0);
  transition: opacity .24s var(--ease), transform .24s var(--ease), visibility 0s linear .24s;
}
.site-nav[data-open] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
  transition-delay: 0s;
}
.site-nav__list { display: flex; flex-direction: column; }
.site-nav__item { border-bottom: 1px solid rgba(28, 35, 33, .85); position: relative; }
.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  padding: 14px 4px 14px 14px;
  position: relative;
  color: var(--white-050);
  transition: color .18s var(--ease);
}
.site-nav__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 16px;
  margin-top: -8px;
  background: var(--lime-400);
  opacity: 0;
  transition: opacity .18s var(--ease);
}
.site-nav__num { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--gray-400); }
.site-nav__label { font-size: 16px; letter-spacing: .06em; line-height: 1.5; }
.site-nav__link[aria-current="page"] { color: var(--lime-400); }
.site-nav__link[aria-current="page"] .site-nav__num { color: var(--lime-400); }
.site-nav__link[aria-current="page"]::before { opacity: 1; }
.site-nav__link:hover { color: var(--lime-200); }

.site-nav__foot {
  margin-top: auto;
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.site-nav__cta {
  display: block;
  text-align: center;
  padding: 12px 10px;
  background: var(--lime-400);
  color: var(--ink-900);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  transition: background .18s var(--ease);
}
.site-nav__cta:hover { background: var(--lime-200); }
.site-nav__util { text-align: center; font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; color: var(--gray-400); }

/* 9 ─ 头部：桌面端侧轨 -------------------------------------- */
@media (min-width: 900px) {
  body { padding-left: var(--rail-w); }

  .site-header {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--rail-w);
    border-bottom: 0;
    border-right: var(--hair);
    background: linear-gradient(180deg, #072E26 0%, #04211B 52%, #0B0F0E 100%);
    padding: 22px 0 18px;
  }
  .site-header__inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    height: 100%;
    min-height: 0;
    padding: 0;
  }
  .rail-meter {
    display: block;
    position: absolute;
    top: 0;
    right: -1px;
    bottom: 0;
    width: 2px;
    background: rgba(28, 35, 33, .8);
  }
  .rail-meter__fill {
    display: block;
    width: 100%;
    height: 100%;
    background: var(--lime-400);
    transform: scaleY(0);
    transform-origin: top center;
  }

  .brand {
    flex-direction: column;
    align-items: center;
    gap: 9px;
    padding: 0 10px 16px;
    border-bottom: var(--hair);
  }
  .brand__text { align-items: center; text-align: center; }
  .brand__name { font-size: 12px; letter-spacing: .1em; line-height: 1.4; }
  .brand__line { display: block; max-width: 78px; font-size: 8.5px; letter-spacing: .1em; line-height: 1.7; }

  .header-status {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
    padding: 11px 8px;
    border-bottom: var(--hair);
    font-size: 10px;
    letter-spacing: .08em;
  }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    flex: 1 1 auto;
    min-height: 0;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: none;
    border: 0;
    padding: 12px 0;
    overflow: visible;
  }
  .site-nav__list { gap: 2px; }
  .site-nav__item { border-bottom: 0; }
  .site-nav__link {
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 9px 4px;
    text-align: center;
  }
  .site-nav__link::before {
    left: 0;
    top: 50%;
    width: 2px;
    height: 22px;
    margin-top: -11px;
  }
  .site-nav__num { font-size: 10px; letter-spacing: .06em; }
  .site-nav__label { font-size: 11.5px; letter-spacing: .06em; line-height: 1.4; }

  .site-nav__foot {
    margin-top: 0;
    flex: none;
    padding: 14px 10px 0;
    border-top: var(--hair);
    gap: 9px;
  }
  .site-nav__cta { padding: 10px 6px; font-size: 12px; letter-spacing: .1em; }
  .site-nav__util { font-size: 10px; }

  /* 滚动后：收窄为编号模式，标签浮出 */
  .site-header[data-condensed] .brand__line { display: none; }
  .site-header[data-condensed] .header-status { padding: 8px 6px; font-size: 9px; }
  .site-header[data-condensed] .site-nav__link { padding: 7px 4px; }
  .site-header[data-condensed] .site-nav__label {
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    white-space: nowrap;
    padding: 6px 12px;
    background: var(--coal-950);
    color: var(--white-050);
    border: 1px solid var(--coal-700);
    font-size: 12px;
    letter-spacing: .08em;
    opacity: 0;
    pointer-events: none;
    transform: translate(-6px, -50%);
    transition: opacity .16s var(--ease), transform .16s var(--ease);
  }
  .site-header[data-condensed] .site-nav__link:hover .site-nav__label,
  .site-header[data-condensed] .site-nav__link:focus-visible .site-nav__label {
    opacity: 1;
    transform: translate(0, -50%);
  }
  .site-header[data-condensed] .site-nav__link[aria-current="page"] .site-nav__label { color: var(--lime-400); }

  @media (max-height: 780px) {
    .site-header { padding: 14px 0 12px; }
    .brand { padding-bottom: 12px; }
    .brand__line { display: none; }
    .header-status { padding: 8px 6px; font-size: 9px; }
    .site-nav__link { padding: 6px 4px; }
    .site-nav__fs { display: none; }
  }
  @media (max-height: 660px) {
    .site-nav__util { display: none; }
  }
}

/* 10 ─ 页脚 ------------------------------------------------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  padding: clamp(38px, 6vw, 76px) var(--gutter) 30px;
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--coal-950) 64%, #050706 100%);
  border-top: var(--hair);
  color: var(--white-050);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -170px;
  right: -80px;
  width: min(72vw, 780px);
  height: 420px;
  background: radial-gradient(closest-side, rgba(184, 255, 60, .15), rgba(184, 255, 60, 0) 72%);
  pointer-events: none;
}
.site-footer__inner {
  position: relative;
  max-width: var(--wrap-max);
  margin-inline: auto;
  display: grid;
  gap: 34px;
}
@media (min-width: 760px) {
  .site-footer__inner { grid-template-columns: minmax(220px, 5fr) 7fr; gap: 56px; }
}
.site-footer__brand { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.brand--footer { flex-direction: row; align-items: center; gap: 12px; padding: 0; border: 0; }
.brand--footer .brand__text { align-items: flex-start; text-align: left; }
.brand--footer .brand__name { font-size: 16px; letter-spacing: .07em; }
.brand--footer .brand__line { display: block; max-width: none; font-size: 9px; }
.site-footer__tagline { max-width: 30em; font-size: 14px; line-height: 1.9; color: var(--gray-400); }

.site-footer__nav { display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.site-footer__col-title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lime-400);
}
.site-footer__list li + li { margin-top: 9px; }
.site-footer__link {
  display: inline-block;
  font-size: 14px;
  color: var(--gray-400);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.site-footer__link:hover, .site-footer__link:focus-visible { color: var(--white-050); border-bottom-color: var(--lime-400); }

.site-footer__meta {
  position: relative;
  max-width: var(--wrap-max);
  margin: 34px auto 0;
  padding-top: 20px;
  border-top: var(--hair);
  display: grid;
  gap: 8px;
}
.site-footer__contact { font-size: 13px; line-height: 1.85; color: var(--gray-400); }
.site-footer__hours { font-size: 12px; line-height: 1.9; color: var(--gray-400); }
.site-footer__record {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gray-400);
}
.site-footer__note {
  margin-top: 6px;
  padding-left: 14px;
  border-left: 2px solid var(--paper-300);
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--paper-300);
}

/* 11 ─ 按钮 ------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 14px;
  letter-spacing: .1em;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.btn--lime { background: var(--lime-400); color: var(--ink-900); font-weight: 700; }
.btn--lime:hover { background: var(--lime-200); }
.btn--ghost { border-color: var(--coal-700); color: var(--white-050); }
.btn--ghost:hover { border-color: var(--lime-400); color: var(--lime-400); }
.btn--orange { background: var(--orange-500); color: #0B0F0E; font-weight: 700; }
.btn--orange:hover { background: #ff8a4d; }

/* 12 ─ 标签 / 状态 / 面板 ----------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--coal-700);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray-400);
}
.chip--lime { border-color: var(--lime-400); color: var(--lime-400); }
.tag {
  display: inline-block;
  padding: 3px 9px;
  background: var(--paper-300);
  color: #2A2A24;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
}
.status { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; letter-spacing: .08em; }
.status::before { content: ""; width: 8px; height: 8px; flex: none; border-radius: 50%; background: currentColor; }
.status--pending { color: var(--orange-500); }
.status--open { color: var(--lime-400); }
.status--closed { color: var(--gray-400); }

.panel { border: var(--hair); background: rgba(7, 46, 38, .32); padding: clamp(16px, 3vw, 28px); }
.panel--flush { padding: 0; }

/* 13 ─ 比分分隔线 ------------------------------------------- */
.scoreline {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 18px;
  padding-top: 14px;
  border-top: var(--hair);
}
.scoreline::after {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 100%;
  height: 1px;
  background: var(--lime-400);
  transform-origin: left center;
}
.has-js .scoreline::after { transform: scaleX(0); transition: transform .42s var(--ease); }
.has-js .scoreline.is-in::after { transform: scaleX(1); }
.scoreline__round { font-family: var(--font-mono); font-size: 12px; letter-spacing: .16em; color: var(--lime-400); }
.scoreline__text { margin-left: auto; font-size: 13px; color: var(--gray-400); text-align: right; }

/* 14 ─ 可展开内容组 ----------------------------------------- */
.expand { border-top: var(--hair); }
.expand:last-of-type { border-bottom: var(--hair); }
.expand__btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 2px;
  text-align: left;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--white-050);
  transition: color .18s var(--ease);
}
.expand__btn:hover { color: var(--lime-200); }
.expand__idx { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; color: var(--lime-400); }
.expand__state { margin-left: auto; font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; color: var(--gray-400); }
.expand__arrow {
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  transition: transform .2s var(--ease);
}
.expand__btn[aria-expanded="true"] .expand__arrow { transform: rotate(45deg); }
.expand__panel { padding: 0 2px 22px; font-size: 15px; line-height: 1.9; color: var(--gray-400); }

/* 15 ─ 档案纸材质 ------------------------------------------- */
.paper {
  position: relative;
  background: var(--paper-100);
  color: #1A1A16;
  border: 1px solid var(--paper-300);
  padding: clamp(18px, 3vw, 32px);
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.95;
  overflow: hidden;
}
.paper::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image:
    repeating-linear-gradient(0deg, rgba(11, 15, 14, .06) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(90deg, rgba(11, 15, 14, .045) 0 1px, transparent 1px 4px);
}
.paper > * { position: relative; }
.paper--stack { box-shadow: 6px 6px 0 -1px var(--paper-300), 12px 12px 0 -2px rgba(217, 210, 194, .3); }
.paper__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #5C5A50;
}

/* 16 ─ 图片容器 --------------------------------------------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: var(--hair);
  background: linear-gradient(150deg, var(--ink-800), var(--coal-950));
}
.media img { width: 100%; height: 100%; object-fit: cover; }
.media--wide { aspect-ratio: 16 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }
.media--tall { aspect-ratio: 4 / 5; }
.media__tag { position: absolute; top: 12px; left: 12px; }
.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 12px;
  background: rgba(11, 15, 14, .74);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--lime-200);
}

/* 17 ─ 面包屑 ----------------------------------------------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gray-400);
}
.breadcrumb a { transition: color .18s var(--ease); }
.breadcrumb a:hover { color: var(--lime-400); }
.breadcrumb__sep { color: var(--coal-700); }
.breadcrumb [aria-current="page"] { color: var(--lime-400); }

/* 18 ─ 入场显现 --------------------------------------------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.has-js [data-reveal].is-in { opacity: 1; transform: none; }

/* 19 ─ 降低动效偏好 ----------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .has-js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .has-js .scoreline::after { transform: scaleX(1) !important; }
  .site-nav { transition: none; }
}