/* ==========================================================================
   球帝安卓 · 共享样式表 /assets/site.css
   夜场记分牌：深墨蓝场地 + 夜战绿看台 + 信号橙计分 + 荧光黄高亮
   ========================================================================== */

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

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

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

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

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

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

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

table {
  border-collapse: collapse;
  width: 100%;
}

hr {
  border: 0;
}

/* ---------- 2. Design tokens ---------- */
:root {
  --ink: #08131F;
  --ink-deep: #050C15;
  --night: #0E3B2E;
  --pitch: #1FA97A;
  --signal: #FF6A1F;
  --volt: #E9FF4D;
  --paper: #F5F0E6;
  --text: #E7ECEF;
  --muted: #9AAAB4;
  --alert: #E5484D;

  --grid: rgba(231, 236, 239, 0.14);
  --grid-strong: rgba(231, 236, 239, 0.28);
  --grid-body: rgba(231, 236, 239, 0.045);
  --on-paper: #0B1A12;
  --on-paper-muted: #5A6B62;

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

  --wrap: 1320px;
  --gut: clamp(18px, 4vw, 48px);
  --section-y: clamp(52px, 7vw, 104px);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --dur: 240ms;
}

/* ---------- 3. Base / 中文排版 ---------- */
body {
  background-color: var(--ink);
  background-image:
    linear-gradient(var(--grid-body) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-body) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: -1px -1px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(34px, 5.4vw, 56px); }
h2 { font-size: clamp(28px, 3.6vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); }

p { max-width: 34em; }

::selection {
  background: var(--volt);
  color: var(--ink);
}

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

#main-content {
  display: block;
  scroll-margin-top: 120px;
}

/* ---------- 4. 布局容器与网格 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.grid--7-5 { grid-template-columns: 7fr 5fr; }
.grid--8-4 { grid-template-columns: 8fr 4fr; }
.grid--thirds { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 5. 排版工具类 ---------- */
.display-1 { font-size: clamp(38px, 6.6vw, 72px); font-weight: 900; line-height: 1.04; }
.display-2 { font-size: clamp(30px, 4.6vw, 56px); font-weight: 900; line-height: 1.08; }
.display-3 { font-size: clamp(25px, 3.2vw, 40px); font-weight: 900; line-height: 1.14; }
.display-4 { font-size: clamp(21px, 2.4vw, 32px); font-weight: 900; line-height: 1.2; }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -0.01em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 10px;
  border-left: 2px solid var(--signal);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pitch);
}

.lede {
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 34em;
}

.prose > * + * { margin-top: 1.35em; }
.prose p { max-width: 34em; }
.prose h3 { margin-top: 2.2em; }
.prose strong {
  color: var(--volt);
  font-weight: 800;
}

.rule {
  height: 1px;
  background: var(--grid);
  border: 0;
  margin: 0;
}

/* ---------- 6. 区块 ---------- */
.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--night { background: var(--night); }

.section--paper {
  background: var(--paper);
  color: var(--on-paper);
}

.section--paper .lede,
.section--paper .exhibit__text { color: var(--on-paper-muted); }

.section--paper .eyebrow {
  color: var(--on-paper);
  border-left-color: var(--signal);
}

.section--paper .section__head { border-bottom-color: rgba(8, 19, 31, 0.18); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 20px;
  margin-bottom: clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--grid);
}

.page-hero { padding-block: clamp(44px, 6vw, 88px); }

/* ---------- 7. 展签 / 卡片 / 数据块 ---------- */
.exhibit {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--grid);
  background: rgba(231, 236, 239, 0.03);
  transition: border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.exhibit:hover {
  border-color: var(--signal);
  background: rgba(255, 106, 31, 0.07);
}

.exhibit__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.exhibit__title {
  margin-top: 10px;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
}

.section--paper .exhibit__title { color: var(--on-paper); }

.exhibit__text {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.panel {
  border: 1px solid var(--grid);
  background: var(--ink);
}

.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pitch);
}

.panel__body { padding: clamp(16px, 2.4vw, 26px); }

.panel--paper {
  background: var(--paper);
  color: var(--on-paper);
  border-color: rgba(8, 19, 31, 0.16);
}

.panel--paper .panel__head {
  border-bottom-color: rgba(8, 19, 31, 0.16);
  color: #0E3B2E;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--grid);
}

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(32px, 4.4vw, 56px);
  line-height: 1;
  color: var(--volt);
  letter-spacing: -0.02em;
}

.stat__unit {
  margin-left: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 8. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--grid-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.tag--signal { border-color: var(--signal); color: var(--signal); }
.tag--volt { border-color: var(--volt); color: var(--volt); }
.tag--pitch { border-color: var(--pitch); color: var(--pitch); }
.tag--alert { border-color: var(--alert); color: var(--alert); }

/* ---------- 9. 按钮与可复制芯片 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid var(--grid-strong);
  border-radius: 0;
  background: transparent;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.btn:hover {
  border-color: var(--signal);
  color: #fff;
  background: rgba(255, 106, 31, 0.12);
}

.btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: #16100b;
  font-weight: 800;
}

.btn--signal:hover {
  background: #ff8343;
  border-color: #ff8343;
  color: #100b06;
}

.btn--ghost:hover {
  border-color: var(--volt);
  color: var(--volt);
  background: rgba(233, 255, 77, 0.1);
}

.btn--volt {
  background: var(--volt);
  border-color: var(--volt);
  color: #0B1A12;
  font-weight: 800;
}

.btn--volt:hover {
  background: #f2ff85;
  border-color: #f2ff85;
  color: #0B1A12;
}

.btn--block { width: 100%; }

.btn--lg {
  min-height: 56px;
  padding: 0 30px;
  font-size: 17px;
}

.copy-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: -8px;
  padding: 3px 8px;
  border: 1px dashed transparent;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--text);
  text-align: left;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.copy-chip:hover {
  border-color: var(--signal);
  color: var(--volt);
}

.copy-chip[data-copied] {
  border-color: var(--pitch);
  color: var(--volt);
}

.copy-chip::after {
  content: attr(data-copied);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--pitch);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb {
  padding-block: 16px;
  border-bottom: 1px solid var(--grid);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.breadcrumb__list a { color: var(--muted); }
.breadcrumb__list a:hover { color: var(--volt); }
.breadcrumb__sep { color: var(--grid-strong); }
.breadcrumb__list [aria-current="page"] { color: var(--text); }

/* ---------- 11. 媒体容器（供页面阶段放图） ---------- */
.media {
  position: relative;
  display: block;
}

.media__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--grid);
  background-color: var(--night);
  background-image:
    linear-gradient(135deg, rgba(31, 169, 122, 0.34), rgba(8, 19, 31, 0.94) 62%),
    repeating-linear-gradient(90deg, rgba(231, 236, 239, 0.07) 0 1px, transparent 1px 64px);
}

.media__frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 30px;
  height: 30px;
  border-top: 2px solid var(--signal);
  border-left: 2px solid var(--signal);
  pointer-events: none;
}

.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.media__caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.section--paper .media__caption { color: var(--on-paper-muted); }

/* ---------- 12. 进场反馈 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

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

/* ---------- 13. 跳至主内容 ---------- */
.skip-link {
  position: absolute;
  left: 14px;
  top: -70px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--volt);
  color: #0B1A12;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: top 200ms var(--ease);
}

.skip-link:focus {
  top: 14px;
}

/* ---------- 14. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(8, 19, 31, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--grid);
  color: var(--text);
}

.header-band {
  background: var(--night);
  border-bottom: 1px solid var(--grid);
}

.header-band__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 34px);
  min-height: 34px;
  padding-block: 5px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  transition: min-height var(--dur) var(--ease);
}

.header-band__inner::-webkit-scrollbar { display: none; }

.band-item {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  max-width: none;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.band-item--end { margin-left: auto; }

.band-key {
  color: var(--pitch);
  letter-spacing: 0.14em;
}

.band-link {
  color: var(--text);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.band-link:hover {
  color: var(--volt);
  border-bottom-color: var(--volt);
}

.band-sep { color: var(--grid-strong); }

.band-item .copy-chip {
  margin-left: 0;
  padding: 0;
  font-size: 11.5px;
}

.site-header[data-shrunk] .header-band__inner { min-height: 28px; }
.site-header[data-shrunk] .band-item--optional { display: none; }

.header-main {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 14px;
  transition: padding var(--dur) var(--ease);
}

.site-header[data-shrunk] .header-main { padding-block: 9px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  position: relative;
  flex: none;
  width: 34px;
  height: 34px;
  background: linear-gradient(160deg, var(--night), var(--ink));
  border: 1px solid var(--grid-strong);
}

.brand__mark::before {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  top: 7px;
  height: 3px;
  background: var(--signal);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 6px;
  bottom: 7px;
  width: 13px;
  height: 13px;
  background: var(--volt);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.07em;
  color: #fff;
  transition: color var(--dur) var(--ease);
}

.brand__domain {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.brand:hover .brand__name { color: var(--volt); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--grid-strong);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.nav-toggle__bar {
  position: relative;
  display: block;
  width: 18px;
  height: 10px;
  border-top: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
}

.nav-toggle__bar::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: currentColor;
  transition: opacity var(--dur) var(--ease);
}

.site-header[data-open] .nav-toggle__bar::before { opacity: 0; }
.site-header[data-open] .nav-toggle {
  border-color: var(--signal);
  color: var(--volt);
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

.site-nav__list {
  display: flex;
  align-items: center;
}

.site-nav__list li { position: relative; }
.site-nav__list li + li { border-left: 1px solid var(--grid); }

.site-nav__list a {
  position: relative;
  display: block;
  padding: 11px 15px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 5px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms var(--ease);
}

.site-nav__list a:hover { color: #fff; }
.site-nav__list a:hover::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] {
  color: #fff;
  font-weight: 700;
}

.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--pitch), var(--signal));
  transform: scaleX(var(--progress, 0));
  transform-origin: left;
  pointer-events: none;
  z-index: 2;
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #08131F 0%, #050C15 100%);
  border-top: 1px solid var(--grid);
  color: var(--text);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pitch), var(--signal) 48%, var(--volt));
}

.footer-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: clamp(30px, 4vw, 46px) clamp(18px, 3vw, 28px);
  border-bottom: 1px solid var(--grid);
}

.brand--footer .brand__name { font-size: 22px; }

.footer-tag {
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(22px, 3vw, 40px);
  padding-block: clamp(30px, 4vw, 52px);
}

.footer-col { min-width: 0; }

.footer-col__title {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--pitch);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
}

.footer-list a {
  color: var(--text);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-list a:hover {
  color: var(--volt);
  border-bottom-color: var(--volt);
}

.footer-list--contact { font-size: 13.5px; }

.footer-list--contact .copy-chip {
  margin-left: 0;
  padding: 2px 0;
  font-size: 13.5px;
}

.footer-addr {
  color: var(--muted);
  line-height: 1.7;
}

.footer-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(12px, 3vw, 28px);
  padding-block: 20px;
  border-top: 1px solid var(--grid);
  font-size: 12.5px;
  color: var(--muted);
}

.footer-bar__copy {
  margin: 0;
  max-width: none;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.footer-bar__icp {
  margin-left: 0;
  padding: 2px 6px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: rgba(154, 170, 180, 0.9);
}

.footer-bar__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-left: auto;
}

.footer-bar__links a {
  transition: color var(--dur) var(--ease);
}

.footer-bar__links a:hover { color: var(--volt); }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .grid--7-5,
  .grid--8-4,
  .grid--thirds { grid-template-columns: 1fr; }
}

@media (max-width: 1000px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  :root { --section-y: clamp(44px, 8vw, 72px); }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 5;
    background: var(--ink);
    border-top: 1px solid var(--grid);
    border-bottom: 1px solid var(--grid);
    box-shadow: 0 26px 52px rgba(0, 0, 0, 0.5);
    max-height: 70vh;
    overflow-y: auto;
    padding-block: 10px;
  }

  .site-header[data-open] .site-nav { display: block; }

  .site-nav__list {
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 8px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-inline: var(--gut);
    scrollbar-width: none;
  }

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

  .site-nav__list li {
    flex: 0 0 auto;
    scroll-snap-align: start;
    border: 1px solid var(--grid);
  }

  .site-nav__list li + li { border-left: 1px solid var(--grid); }

  .site-nav__list a {
    padding: 10px 16px;
    white-space: nowrap;
  }

  .site-nav__list a::after {
    left: 16px;
    right: 16px;
    bottom: 3px;
  }

  .header-main { gap: 12px; }
  .brand__name { font-size: 18px; }
  .header-band__inner { gap: 16px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .band-item--optional { display: none; }
  .brand__domain { font-size: 10px; }
  .brand__mark { width: 30px; height: 30px; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bar { align-items: flex-start; }
  .footer-bar__links { margin-left: 0; width: 100%; }

  .media--wide .media__frame { aspect-ratio: 16 / 9; }
}

/* ---------- 17. 动效降级 ---------- */
@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;
    transform: none;
  }
}