/* ============================================================
   K体育 · 共享样式 /assets/site.css
   高原夜航信号台：深蓝底 + 湖青/黄/橙信号色 + 暖纸白阅读层
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5, p,
ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
}

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

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

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

a { color: inherit; }

[hidden] { display: none !important; }

/* ---------- 变量 ---------- */
:root {
  --ink-900: #050D1A;
  --navy: #0A1A31;
  --paper: #F6F1E4;
  --teal: #2ED3C2;
  --teal-deep: #157A72;
  --yellow: #F4C63F;
  --orange: #FF7A3C;
  --mist: #8FA6C4;
  --glass: #16294A;

  --ink-on-paper: #0A1A31;
  --muted-on-paper: #4A5B72;

  --font-display: "Archivo Narrow", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --step-14: 0.875rem;
  --step-18: 1.125rem;
  --step-24: 1.5rem;
  --step-40: 2.5rem;
  --step-72: 4.5rem;
  --step-120: 7.5rem;

  --shell: min(1180px, 92vw);
  --gutter: clamp(16px, 4vw, 40px);
  --rail: 88px;
  --header-top: 20px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --line: rgba(46, 211, 194, 0.34);
  --line-soft: rgba(143, 166, 196, 0.22);
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--navy);
  background-image:
    radial-gradient(60% 48% at 78% -6%, rgba(46, 211, 194, 0.13), transparent 62%),
    radial-gradient(48% 40% at 6% 2%, rgba(244, 198, 63, 0.09), transparent 60%),
    radial-gradient(84% 58% at 50% 108%, rgba(21, 122, 114, 0.18), transparent 66%);
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(16px, 1.05vw, 18px);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

p { max-width: 38em; }

a { text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background: var(--yellow);
  color: var(--ink-900);
}

/* ---------- 布局容器 ---------- */
.container {
  width: var(--shell);
  margin-inline: auto;
}

.section {
  padding-block: clamp(48px, 8vw, 96px);
}

#main-content {
  display: block;
  padding-top: clamp(92px, 12vw, 128px);
}

/* ---------- 排版工具 ---------- */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
}

.display-xl {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 8vw, 120px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.display-lg {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
}

.lede {
  font-size: var(--step-18);
  line-height: 1.75;
  color: rgba(246, 241, 228, 0.86);
}

.note {
  border-left: 2px solid var(--teal-deep);
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.time-anchor {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
  color: var(--yellow);
}

/* ---------- 章节长卷 ---------- */
.chapter {
  position: relative;
}

.chapter__band {
  height: 12px;
  width: 100%;
  background: var(--teal);
  border-radius: 1px;
}

.chapter__band--yellow { background: var(--yellow); }
.chapter__band--orange { background: var(--orange); }

.chapter__head {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: clamp(16px, 3vw, 40px);
  padding-block: clamp(28px, 4vw, 56px) clamp(16px, 2vw, 28px);
  align-items: start;
}

.chapter__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  padding-top: 0.7em;
}

.chapter__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

/* ---------- 框景 ---------- */
.frame {
  position: relative;
  border: 1px solid var(--line);
  padding: clamp(20px, 4vw, 48px);
}

.frame__corner {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--yellow);
  pointer-events: none;
}

.frame__corner--tl { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame__corner--tr { top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.frame__corner--bl { bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.frame__corner--br { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

/* ---------- 面板 ---------- */
.panel {
  background: rgba(22, 41, 74, 0.62);
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 32px);
}

.panel--paper {
  background: var(--paper);
  color: var(--ink-on-paper);
  border: 1px solid rgba(10, 26, 49, 0.14);
  padding: clamp(20px, 4vw, 40px);
}

.panel--paper h2,
.panel--paper h3,
.panel--paper h4 { color: var(--ink-on-paper); }

.panel--paper .mono,
.panel--paper .note {
  color: var(--muted-on-paper);
}

.panel--paper .note { border-left-color: var(--teal-deep); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 180ms var(--ease), background 180ms var(--ease),
              color 180ms var(--ease), border-color 180ms var(--ease);
}

.btn--solid {
  background: var(--yellow);
  color: var(--ink-900);
  font-weight: 700;
}

.btn--solid:hover {
  background: #ffd45c;
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(46, 211, 194, 0.5);
  color: var(--paper);
}

.btn--ghost:hover {
  background: rgba(46, 211, 194, 0.12);
  border-color: var(--teal);
  transform: translateY(-2px);
}

.panel--paper .btn--ghost {
  color: var(--ink-on-paper);
  border-color: var(--teal-deep);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--teal-deep);
}

.breadcrumb__link {
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.breadcrumb__link:hover {
  color: var(--teal);
  border-bottom-color: var(--teal);
}

.breadcrumb__item[aria-current="page"] { color: var(--paper); }

/* ---------- 图片 / 图形容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  background:
    radial-gradient(70% 60% at 70% 20%, rgba(46, 211, 194, 0.22), transparent 62%),
    radial-gradient(60% 60% at 20% 80%, rgba(244, 198, 63, 0.16), transparent 64%),
    linear-gradient(160deg, #071426 0%, #0A1A31 52%, #050D1A 100%);
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__inner {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.media-frame__inner img,
.media-frame__inner svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  background: linear-gradient(to top, rgba(5, 13, 26, 0.92), rgba(5, 13, 26, 0));
}

/* ---------- 联赛几何色块 ---------- */
.league-chip {
  --chip: var(--teal);
  display: inline-grid;
  place-items: center;
  width: 38px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--chip);
  border-radius: 50%;
  color: var(--chip);
  background: rgba(246, 241, 228, 0.04);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  flex: none;
}

.league-chip--yellow { --chip: var(--yellow); }
.league-chip--orange { --chip: var(--orange); }
.league-chip--mist { --chip: var(--mist); }

.league-chip--triangle {
  border-radius: 0;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  border: 0;
  background: rgba(46, 211, 194, 0.18);
  color: var(--teal);
}

/* ---------- 网格 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}

.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.band-divider {
  height: 12px;
  background: linear-gradient(90deg, var(--teal) 0 33%, var(--yellow) 33% 66%, var(--orange) 66% 100%);
  opacity: 0.85;
}

/* ---------- 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

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

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -90px;
  left: 16px;
  z-index: 300;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: top 160ms var(--ease);
}

.skip-link:focus {
  top: 12px;
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}

/* ============================================================
   头部
   ============================================================ */
.site-header {
  position: fixed;
  top: var(--header-top);
  left: 0;
  right: 0;
  z-index: 120;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.header-shell {
  pointer-events: auto;
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 20px);
  width: var(--shell);
  padding: 10px clamp(14px, 2vw, 22px);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(22, 41, 74, 0.74);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  backdrop-filter: blur(14px) saturate(120%);
  box-shadow: 0 16px 42px rgba(5, 13, 26, 0.42);
  transition: width 260ms var(--ease), padding 220ms var(--ease),
              background 220ms var(--ease), border-radius 220ms var(--ease);
}

.site-header[data-compact="true"] .header-shell {
  width: min(940px, 88vw);
  padding-block: 6px;
  background: rgba(22, 41, 74, 0.9);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  text-decoration: none;
  color: var(--paper);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--yellow);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
  transition: transform 180ms var(--ease);
}

.brand:hover .brand__mark { transform: translateY(-2px); }

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.brand__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  line-height: 1.2;
}

/* 导航 */
.nav {
  margin-inline: auto;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav__item { display: block; }

.nav__link {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--paper);
  white-space: nowrap;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.nav__link:hover {
  background: rgba(246, 241, 228, 0.12);
}

.nav__link[aria-current="page"] {
  background: var(--yellow);
  color: var(--ink-900);
  font-weight: 700;
}

.nav__link[aria-current="page"]:hover {
  background: #ffd45c;
}

/* 头部元信息 */
.header-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--orange);
  animation: pulse-ring 2.6s var(--ease) infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(255, 122, 60, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(255, 122, 60, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 122, 60, 0); }
}

.header-meta__text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  white-space: nowrap;
}

.header-link {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(246, 241, 228, 0.22);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
  white-space: nowrap;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.header-link:hover {
  color: var(--teal);
  border-color: var(--teal);
  background: rgba(46, 211, 194, 0.08);
}

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.08em;
  flex: none;
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.nav-toggle:hover { background: rgba(46, 211, 194, 0.1); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: var(--paper);
  transition: background 160ms var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--paper);
  transition: transform 180ms var(--ease), top 180ms var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle__label { line-height: 1; }

.site-header[data-open="true"] .nav-toggle {
  border-color: var(--yellow);
}

.site-header[data-open="true"] .nav-toggle__bars { background: transparent; }
.site-header[data-open="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.site-header[data-open="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 阅读进度 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 130;
  background: rgba(143, 166, 196, 0.18);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--teal), var(--yellow) 60%, var(--orange));
  transition: transform 120ms linear;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  padding-block: clamp(48px, 7vw, 80px) 24px;
  background: var(--ink-900);
  border-top: 1px solid var(--line-soft);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: linear-gradient(90deg, var(--teal) 0 33%, var(--yellow) 33% 66%, var(--orange) 66% 100%);
  opacity: 0.9;
}

.footer-shell {
  width: var(--shell);
  margin-inline: auto;
  padding-top: clamp(12px, 2vw, 20px);
}

.footer-brand {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-brand__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  background: var(--yellow);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--step-24);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--paper);
  max-width: none;
}

.footer-tagline {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--mist);
  max-width: none;
  margin-left: 4px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
  max-width: 760px;
  margin-top: clamp(28px, 4vw, 44px);
}

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

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  max-width: none;
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(246, 241, 228, 0.8);
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.footer-link:hover {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
}

.footer-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 32px);
  margin-top: clamp(32px, 5vw, 56px);
  padding-block: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.footer-band__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.footer-band__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal-deep);
}

.footer-band__value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding-top: 18px;
}

.footer-legal__text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  max-width: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .brand__index { display: none; }
  .nav__link { padding: 8px 10px; font-size: 13px; }
  .header-meta__text { display: none; }
}

@media (max-width: 900px) {
  :root { --header-top: 12px; }

  .header-shell {
    width: 92vw;
    padding: 8px 12px;
    border-radius: 22px;
    gap: 10px;
  }

  .site-header[data-compact="true"] .header-shell {
    width: 92vw;
    padding-block: 8px;
  }

  .nav-toggle { display: inline-flex; margin-left: auto; }

  .header-meta { margin-left: auto; gap: 0; }

  .nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(10, 26, 49, 0.97);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: 0 22px 54px rgba(5, 13, 26, 0.6);
    max-height: min(70vh, 460px);
    overflow-y: auto;
  }

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

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow-x: auto;
  }

  .nav__link {
    display: block;
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 16px;
    letter-spacing: 0.04em;
  }

  .chapter__head {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .chapter__index { padding-top: 0; }

  .grid-12 > * { grid-column: span 12 !important; }

  .footer-band { grid-template-columns: 1fr; gap: 14px; }
}

@media (max-width: 640px) {
  .brand__mark { width: 30px; height: 30px; font-size: 16px; }
  .brand__name { font-size: 15px; }
  .nav-toggle__label { display: none; }

  .footer-grid { grid-template-columns: 1fr; gap: 22px; }
  .footer-brand__name { font-size: var(--step-18); }
  .footer-tagline { width: 100%; margin-left: 0; }

  .frame { padding: 18px; }
  .frame__corner { width: 14px; height: 14px; }
}

/* ---------- 动效偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

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

  .pulse-dot { animation: none; }
}