/* ============================================================
   BET体育 · 共享样式表 /assets/site.css
   深空黑 × 蓝图网格 × 电光青 / 转会橙 / 面板荧光绿
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dt, dd {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
i, em { font-style: normal; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  color-scheme: dark;

  --ink: #12161A;
  --slate: #1C2226;
  --rock: #39424A;
  --mist: #98A2AB;
  --bone: #F4F1E9;
  --moss: #4F6F55;
  --clay: #C2643F;
  --cyan: #2FD9C9;
  --lime: #A9E06A;
  --flame: #FF7A33;

  --line: rgba(57, 66, 74, 0.9);
  --line-soft: rgba(57, 66, 74, 0.48);
  --glass: rgba(28, 34, 38, 0.86);

  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC",
                  "PingFang SC", system-ui, sans-serif;
  --font-head: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", system-ui, sans-serif;

  --r-lg: 32px;
  --r-md: 20px;
  --r-sm: 12px;
  --pill: 999px;

  --gutter: min(1160px, 84vw);
  --dur: 160ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 中文排版基底 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(57, 66, 74, 0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 66, 74, 0.2) 1px, transparent 1px);
  background-size: 120px 120px;
  background-position: center top;
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0;
}

p { max-width: 68ch; }

::selection { background: rgba(47, 217, 201, 0.28); color: var(--bone); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

.num {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

/* ---------- 4. 主内容区（配合固定页头） ---------- */
main { display: block; }
#main-content { padding-top: 112px; scroll-margin-top: 96px; }

/* ---------- 5. 页头 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 6px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--pill);
  background: var(--cyan);
  color: #08211E;
  font-size: 14px;
  font-weight: 600;
  pointer-events: auto;
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus-visible,
.skip-link:focus { transform: translateY(0); outline-offset: 3px; }

.site-header {
  position: fixed;
  inset: 18px 0 auto;
  z-index: 80;
  pointer-events: none;
}

.header-shell {
  width: var(--gutter);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  pointer-events: none;
}

.brand-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 0 1 auto;
}

.brand-lock {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 9px 20px 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  pointer-events: auto;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.brand-lock:hover {
  border-color: rgba(47, 217, 201, 0.55);
  background: rgba(28, 34, 38, 0.96);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 12px;
  border: 1px solid rgba(47, 217, 201, 0.45);
  background: linear-gradient(150deg, rgba(47, 217, 201, 0.22), rgba(47, 217, 201, 0.03));
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1;
}

.brand-words { display: flex; flex-direction: column; line-height: 1.14; min-width: 0; }
.brand-name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--bone);
  white-space: nowrap;
}
.brand-sub {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  white-space: nowrap;
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--line-soft);
  background: rgba(18, 22, 26, 0.74);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
  pointer-events: auto;
}
.status-dot {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(169, 224, 106, 0.14);
  animation: bx-pulse 2.8s ease-in-out infinite;
}
@keyframes bx-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(169, 224, 106, 0.14); }
  50% { box-shadow: 0 0 0 9px rgba(169, 224, 106, 0.02); }
}
.status-text .num { color: var(--flame); font-size: 14px; }

/* 栏目胶囊 */
.primary-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 6px 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--glass);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  max-width: 100%;
  pointer-events: auto;
}

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

.nav-link {
  display: inline-block;
  padding: 8px 13px;
  border-radius: var(--pill);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--mist);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-link:hover { color: var(--bone); background: rgba(57, 66, 74, 0.55); }
.nav-link[aria-current="page"] {
  color: #08211E;
  background: var(--cyan);
  font-weight: 600;
}
.nav-link[aria-current="page"]:hover { color: #08211E; background: var(--cyan); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 6px;
  padding-left: 10px;
  border-left: 1px solid var(--line-soft);
}
.nav-cta .btn { padding: 8px 16px; font-size: 13.5px; }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  color: var(--bone);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  pointer-events: auto;
}
.nav-toggle-bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle-bars i {
  display: block;
  height: 1.5px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child {
  transform: translateY(2.75px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}
.nav-toggle-label { line-height: 1; }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  text-align: center;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
              border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-solid { background: var(--cyan); color: #08211E; }
.btn-solid:hover { background: #4BE6D7; }

.btn-ghost { background: transparent; border-color: var(--line); color: var(--bone); }
.btn-ghost:hover { border-color: rgba(47, 217, 201, 0.6); color: var(--cyan); }

.btn-quiet { background: rgba(57, 66, 74, 0.5); color: var(--bone); }
.btn-quiet:hover { background: rgba(57, 66, 74, 0.9); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  border-top: 1px solid var(--line);
  border-radius: 36px 36px 0 0;
  background: linear-gradient(180deg, rgba(28, 34, 38, 0.98), rgba(18, 22, 26, 1));
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(57, 66, 74, 0.32) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 66, 74, 0.32) 1px, transparent 1px);
  background-size: 120px 120px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 72%);
  opacity: 0.55;
}

.footer-shell {
  position: relative;
  z-index: 1;
  width: var(--gutter);
  margin-inline: auto;
  padding: 72px 0 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 1.4fr) minmax(240px, 1fr);
  gap: 56px;
  align-items: start;
}

.footer-lock { display: inline-flex; align-items: center; gap: 12px; }
.footer-lock:hover .brand-sub { color: var(--cyan); }
.footer-lock .brand-sub { transition: color var(--dur) var(--ease); }

.footer-tagline {
  margin-top: 20px;
  max-width: 26ch;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.75;
}

.footer-meta {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 9px;
}
.meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  max-width: none;
}
.meta-row dt { color: var(--mist); letter-spacing: 0.08em; }
.meta-row dd { color: var(--bone); font-weight: 500; }
.meta-row dd.num { color: var(--flame); font-size: 15px; }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer-col-title {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--mist);
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.footer-links { display: grid; gap: 10px; }
.footer-link {
  display: inline-block;
  font-size: 14px;
  color: rgba(244, 241, 233, 0.78);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-link:hover { color: var(--cyan); transform: translateX(3px); }

.contact-rows { display: grid; gap: 10px; }
.contact-row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 13.5px;
  max-width: none;
}
.contact-key { color: var(--mist); letter-spacing: 0.06em; }
.contact-val { color: var(--bone); word-break: break-word; }
.contact-val.num { color: var(--lime); font-size: 15px; }

.footer-note {
  margin-top: 18px;
  padding: 12px 14px;
  border-left: 2px solid var(--clay);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(194, 100, 63, 0.09);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(244, 241, 233, 0.74);
  max-width: 34ch;
}

.footer-bottom {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
}
.footer-legal {
  font-size: 12.5px;
  color: var(--mist);
  letter-spacing: 0.04em;
  max-width: none;
}
.footer-copy {
  margin-left: auto;
  font-size: 12.5px;
  color: rgba(152, 162, 171, 0.82);
  max-width: none;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: rgba(57, 66, 74, 0.35);
  color: var(--bone);
  font-size: 13px;
  font-weight: 500;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.back-to-top:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }

/* ---------- 8. 通用布局与内容组件 ---------- */
.container { width: var(--gutter); margin-inline: auto; }

.section { padding-block: 64px; }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--mist);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  flex: none;
  background: var(--cyan);
}

.display-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(56px, 8vw, 112px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--bone);
}

.h-section {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 3.4vw, 48px);
  line-height: 1.2;
}

.lede {
  max-width: 62ch;
  color: rgba(244, 241, 233, 0.8);
  font-size: 17px;
  line-height: 1.8;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.split { display: grid; gap: 40px; }

.panel {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(28, 34, 38, 0.94), rgba(18, 22, 26, 0.94));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.panel:hover {
  transform: translateY(-4px);
  border-color: rgba(47, 217, 201, 0.4);
  box-shadow: 0 22px 44px -30px rgba(47, 217, 201, 0.55);
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: var(--pill);
  border: 1px solid var(--line-soft);
  background: rgba(57, 66, 74, 0.3);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
}
.chip[data-tone="cyan"] { color: var(--cyan); border-color: rgba(47, 217, 201, 0.4); background: rgba(47, 217, 201, 0.08); }
.chip[data-tone="flame"] { color: var(--flame); border-color: rgba(255, 122, 51, 0.4); background: rgba(255, 122, 51, 0.08); }
.chip[data-tone="lime"] { color: var(--lime); border-color: rgba(169, 224, 106, 0.4); background: rgba(169, 224, 106, 0.08); }
.chip[data-tone="moss"] { color: #BBD5C0; border-color: rgba(79, 111, 85, 0.65); background: rgba(79, 111, 85, 0.22); }

.data-block {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  background: rgba(28, 34, 38, 0.72);
}
.data-block .data-label { font-size: 12px; letter-spacing: 0.12em; }
.data-block .data-value { font-size: 32px; }
.data-block[data-tone="flame"] .data-value { color: var(--flame); }
.data-block[data-tone="lime"] .data-value { color: var(--lime); }
.data-block[data-tone="bone"] .data-value { color: var(--bone); }

.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}
.data-row:last-child { border-bottom: 0; }
.data-label { font-size: 13.5px; color: var(--mist); letter-spacing: 0.04em; }
.data-value {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.breadcrumbs li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before { content: "/"; color: var(--rock); }
.breadcrumbs a { color: var(--mist); transition: color var(--dur) var(--ease); }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--bone); }

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  background: linear-gradient(135deg, rgba(28, 34, 38, 0.96), rgba(18, 22, 26, 0.96));
  aspect-ratio: 16 / 9;
}
.media-frame img { width: 100%; height: 100%; object-fit: cover; }
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(57, 66, 74, 0.34) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 66, 74, 0.34) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.6;
}
.media-frame[data-ratio="4/3"] { aspect-ratio: 4 / 3; }
.media-frame[data-ratio="1/1"] { aspect-ratio: 1 / 1; }
.media-frame[data-ratio="3/4"] { aspect-ratio: 3 / 4; }

.timeline {
  position: relative;
  display: grid;
  gap: 20px;
  padding-left: 28px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(47, 217, 201, 0));
}
.timeline-item { position: relative; }
.timeline-dot {
  position: absolute;
  left: -28px;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 2px solid var(--rock);
  background: var(--ink);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.timeline-item[data-state="active"] .timeline-dot {
  border-color: var(--flame);
  background: var(--flame);
  box-shadow: 0 0 0 5px rgba(255, 122, 51, 0.14);
}
.timeline-item[data-state="done"] .timeline-dot {
  border-color: var(--lime);
  background: var(--lime);
}

/* ---------- 9. 显现协议 ---------- */
[data-reveal] { transition: opacity 300ms var(--ease), transform 300ms var(--ease); }
[data-reveal][data-reveal-state="hidden"] { opacity: 0; transform: translateY(14px); }

/* ---------- 10. 响应式 ---------- */
@media (min-width: 900px) {
  .section { padding-block: 96px; }
  .split { grid-template-columns: 5fr 7fr; align-items: start; }
  .split[data-flow="7-5"] { grid-template-columns: 7fr 5fr; }
}

@media (max-width: 1400px) {
  .status-line { display: none; }
}

@media (max-width: 1040px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 44px; }
  .footer-contact { grid-column: 1 / -1; }
  .footer-note { max-width: 60ch; }
}

@media (max-width: 1160px) {
  .site-header { inset: 12px 0 auto; }
  .header-shell { width: 88vw; justify-content: space-between; gap: 10px; }
  .status-line { display: none; }

  .nav-toggle {
    display: inline-flex;
    position: fixed;
    right: 18px;
    bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    margin: 0;
    z-index: 90;
  }

  .primary-nav {
    position: fixed;
    left: 50%;
    bottom: calc(78px + env(safe-area-inset-bottom, 0px));
    width: min(420px, 88vw);
    max-width: 88vw;
    margin: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px;
    border-radius: 26px;
    transform: translate(-50%, 14px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
                visibility var(--dur) linear;
  }
  .primary-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
  }

  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { padding: 12px 18px; font-size: 15px; }

  .nav-cta {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin: 12px 0 0;
    padding: 12px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line-soft);
  }
  .nav-cta .btn { width: 100%; padding: 12px 18px; font-size: 14px; }

  #main-content { padding-top: 104px; }
}

@media (max-width: 680px) {
  body { font-size: 15.5px; }
  .brand-sub { display: none; }
  .footer-shell { padding: 56px 0 22px; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .footer-contact { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { margin-top: 44px; }
  .footer-copy { margin-left: 0; }
  .back-to-top { width: 100%; justify-content: center; }
  .contact-row { grid-template-columns: 68px minmax(0, 1fr); font-size: 13px; }
  .panel { padding: 22px; border-radius: var(--r-md); }
  .section { padding-block: 52px; }
}

/* ---------- 11. 减少动效 ---------- */
@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] { transition: none; }
  [data-reveal][data-reveal-state="hidden"] { opacity: 1; transform: none; }
  .panel:hover, .btn:hover, .footer-link:hover, .back-to-top:hover { transform: none; }
}