/* ==========================================================================
   利来体育 · 数据主场 — 共享外壳样式 /assets/site.css
   深墨绿基底 + 蓝图网格 + 荧光青/琥珀双色高亮
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --dt-bg: #07130F;
  --dt-panel: #0D241C;
  --dt-raise: #14362A;
  --dt-cyan: #35F0C8;
  --dt-cool: #7FE3FF;
  --dt-amber: #FFB24A;
  --dt-gold-a: #F7CE7A;
  --dt-gold-b: #C98B32;
  --dt-paper: #EAF6F0;
  --dt-muted: #9DB6AB;
  --dt-alert: #FF6B57;

  --dt-line: rgba(53, 240, 200, 0.20);
  --dt-line-soft: rgba(157, 182, 171, 0.16);

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

  --dt-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dt-cut: 12px;
}

/* ---------- 2. 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--dt-bg);
  background-image:
    linear-gradient(to right, rgba(53, 240, 200, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 240, 200, 0.045) 1px, transparent 1px);
  background-size: 80px 80px;
  background-position: center top;
  color: var(--dt-paper);
  font-family: var(--dt-font-body);
  font-size: 17px;
  line-height: 1.62;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--dt-font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.015em;
}

p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dt, dd { margin: 0; }
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; }
hr { border: 0; }

:focus-visible {
  outline: 2px solid var(--dt-cool);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection {
  background: rgba(53, 240, 200, 0.28);
  color: var(--dt-paper);
}

/* ---------- 3. 基础构件 ---------- */
.dt-container {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

.dt-section { padding-block: clamp(48px, 7vw, 96px); }

.dt-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--dt-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--dt-cool);
}
.dt-eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--dt-cyan);
  flex: none;
}

.dt-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--dt-cyan), rgba(53, 240, 200, 0));
}

.dt-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--dt-line);
  background: rgba(20, 54, 42, 0.55);
  font-family: var(--dt-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dt-cool);
  white-space: nowrap;
}

/* 按钮 */
.dt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  font-family: var(--dt-font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.2;
  white-space: nowrap;
  clip-path: polygon(
    10px 0, 100% 0,
    100% calc(100% - 10px), calc(100% - 10px) 100%,
    0 100%, 0 10px
  );
  transition: background-color 0.22s var(--dt-ease), color 0.22s var(--dt-ease), box-shadow 0.22s var(--dt-ease);
}
.dt-btn:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--dt-paper);
}

.dt-btn--accent {
  background: var(--dt-cyan);
  color: #05120D;
}
.dt-btn--accent:hover { background: #6BF7DC; color: #05120D; }

.dt-btn--ghost {
  background: rgba(53, 240, 200, 0.06);
  color: var(--dt-cyan);
  box-shadow: inset 0 0 0 1px rgba(53, 240, 200, 0.38);
}
.dt-btn--ghost:hover {
  background: rgba(53, 240, 200, 0.14);
  color: var(--dt-paper);
  box-shadow: inset 0 0 0 1px rgba(53, 240, 200, 0.7);
}

/* 数据锚点 */
.dt-stat { display: block; }
.dt-stat__value {
  display: block;
  font-family: var(--dt-font-mono);
  font-size: clamp(3.2rem, 7vw, 7.2rem);
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--dt-cyan);
  font-variant-numeric: tabular-nums;
}
.dt-stat__label {
  display: block;
  margin-top: 12px;
  font-family: var(--dt-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dt-muted);
}

/* 正文容器 */
.dt-prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.7;
  color: var(--dt-paper);
}
.dt-prose p + p,
.dt-prose ul + p,
.dt-prose ol + p,
.dt-prose p + ul,
.dt-prose p + ol { margin-top: 18px; }
.dt-prose h2 {
  margin-top: 40px;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  color: var(--dt-paper);
}
.dt-prose h3 {
  margin-top: 28px;
  font-size: clamp(1.15rem, 1.7vw, 1.35rem);
  color: var(--dt-cyan);
}
.dt-prose a {
  color: var(--dt-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.dt-prose a:hover { color: var(--dt-cool); }
.dt-prose strong { color: var(--dt-paper); font-weight: 700; }

/* 面包屑 */
.dt-crumbs {
  font-family: var(--dt-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--dt-muted);
}
.dt-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 10px;
}
.dt-crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.dt-crumbs__item + .dt-crumbs__item::before {
  content: "/";
  color: rgba(157, 182, 171, 0.45);
}
.dt-crumbs__link { color: var(--dt-muted); transition: color 0.2s var(--dt-ease); }
.dt-crumbs__link:hover { color: var(--dt-cyan); }
.dt-crumbs__current { color: var(--dt-paper); }

/* 网格布局 */
.dt-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 32px;
}
.dt-layout__rail { grid-column: 1 / span 2; }
.dt-layout__body { grid-column: 3 / span 10; }

/* 图片容器基础 */
.dt-media {
  position: relative;
  display: block;
  margin: 0;
  background: linear-gradient(155deg, rgba(20, 54, 42, 0.92), rgba(7, 19, 15, 0.96));
  border: 1px solid var(--dt-line);
  overflow: hidden;
  clip-path: polygon(
    0 0, calc(100% - 22px) 0,
    100% 22px, 100% 100%,
    22px 100%, 0 calc(100% - 22px)
  );
}
.dt-media__frame {
  position: relative;
  aspect-ratio: var(--dt-media-ratio, 16 / 9);
  width: 100%;
}
.dt-media__frame > img,
.dt-media__frame > svg,
.dt-media__frame > picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}
.dt-media__caption {
  padding: 12px 16px;
  border-top: 1px solid var(--dt-line-soft);
  font-family: var(--dt-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--dt-muted);
}
.dt-media--wide { --dt-media-ratio: 21 / 9; }
.dt-media--16x9 { --dt-media-ratio: 16 / 9; }
.dt-media--4x3 { --dt-media-ratio: 4 / 3; }
.dt-media--square { --dt-media-ratio: 1 / 1; }

/* ---------- 4. 跳过链接 ---------- */
.dt-skip {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 300;
  padding: 12px 20px;
  background: var(--dt-cyan);
  color: #05120D;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: top 0.24s var(--dt-ease);
}
.dt-skip:focus,
.dt-skip:focus-visible {
  top: 12px;
  outline: none;
  box-shadow: inset 0 0 0 2px #05120D;
}

/* ---------- 5. 页头 ---------- */
.dt-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7, 19, 15, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dt-line-soft);
}

.dt-header__grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding-block: 18px 14px;
}

/* 数据节拍 */
.dt-beat {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--dt-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dt-muted);
  white-space: nowrap;
}
.dt-beat__dot {
  width: 7px;
  height: 7px;
  flex: none;
  background: var(--dt-cyan);
  box-shadow: 0 0 0 0 rgba(53, 240, 200, 0.55);
  animation: dt-beat-pulse 2.4s ease-in-out infinite;
}
.dt-beat__value {
  color: var(--dt-cyan);
  font-weight: 600;
  letter-spacing: 0.06em;
}
@keyframes dt-beat-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(53, 240, 200, 0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(53, 240, 200, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 240, 200, 0); }
}

/* 品牌字标 */
.dt-brand {
  justify-self: center;
  display: grid;
  justify-items: center;
  gap: 3px;
  padding-inline: 12px;
  text-align: center;
}
.dt-brand__mark {
  width: 11px;
  height: 11px;
  background: var(--dt-cyan);
  clip-path: polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
  transition: transform 0.3s var(--dt-ease);
}
.dt-brand:hover .dt-brand__mark { transform: rotate(-45deg); }
.dt-brand__name {
  font-family: var(--dt-font-display);
  font-size: clamp(1.45rem, 2.5vw, 2.05rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--dt-paper);
}
.dt-brand__sub {
  font-family: var(--dt-font-mono);
  font-size: 10px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--dt-cyan);
  opacity: 0.85;
}

/* 工具区 */
.dt-tools {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 18px;
}
.dt-tools__link {
  font-size: 13.5px;
  letter-spacing: 0.08em;
  color: var(--dt-muted);
  padding-block: 6px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--dt-ease), border-color 0.2s var(--dt-ease);
}
.dt-tools__link:hover {
  color: var(--dt-cyan);
  border-bottom-color: var(--dt-cyan);
}
.dt-tools__cta { font-size: 13px; padding: 11px 18px; }

/* 导航条 */
.dt-navbar {
  border-top: 1px solid var(--dt-line-soft);
  background: linear-gradient(180deg, rgba(13, 36, 28, 0.55), rgba(7, 19, 15, 0));
}
.dt-navbar__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
}

.dt-nav-shell {
  display: flex;
  justify-content: center;
  flex: 1 1 auto;
  min-width: 0;
}

.dt-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: dt-nav;
}

.dt-nav__item { display: flex; }

.dt-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  padding: 15px 16px 19px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--dt-muted);
  transition: color 0.22s var(--dt-ease);
}
.dt-nav__link::before {
  counter-increment: dt-nav;
  content: counter(dt-nav, decimal-leading-zero);
  margin-right: 8px;
  font-family: var(--dt-font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0;
  color: rgba(127, 227, 255, 0.55);
  transition: color 0.22s var(--dt-ease);
}
.dt-nav__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 9px;
  height: 1px;
  background: var(--dt-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--dt-ease);
}
.dt-nav__link:hover { color: var(--dt-paper); }
.dt-nav__link:hover::before { color: var(--dt-cool); }
.dt-nav__link:hover::after,
.dt-nav__link:focus-visible::after,
.dt-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.dt-nav__link[aria-current="page"] { color: var(--dt-cyan); }
.dt-nav__link[aria-current="page"]::before { color: var(--dt-cyan); }

/* 移动导航按钮 */
.dt-nav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 12px 0;
  color: var(--dt-cyan);
  font-family: var(--dt-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.dt-nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
  flex: none;
  order: 2;
}
.dt-nav-toggle__bars > span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform 0.26s var(--dt-ease), opacity 0.2s var(--dt-ease);
}
.dt-nav-toggle__label { order: 1; }
.dt-nav-toggle[data-open] .dt-nav-toggle__bars > span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.dt-nav-toggle[data-open] .dt-nav-toggle__bars > span:nth-child(2) { opacity: 0; }
.dt-nav-toggle[data-open] .dt-nav-toggle__bars > span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 6. 页脚 ---------- */
.dt-footer {
  position: relative;
  border-top: 1px solid var(--dt-line-soft);
  background: linear-gradient(180deg, #07130F 0%, #0A1C15 58%, #0B2119 100%);
  padding-block: 68px 34px;
}
.dt-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dt-cyan) 0%, var(--dt-cool) 42%, var(--dt-amber) 100%);
  opacity: 0.85;
}

.dt-footer__main {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 2.1fr) minmax(0, 1.05fr);
  gap: 46px 44px;
}

/* 品牌列 */
.dt-footer__brandcol { min-width: 0; }

.dt-footer__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 18px;
}
.dt-footer__brandmark {
  width: 10px;
  height: 10px;
  flex: none;
  background: var(--dt-cyan);
  clip-path: polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
  transform: translateY(-1px);
}
.dt-footer__brandname {
  font-family: var(--dt-font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--dt-paper);
}
.dt-footer__brandsub {
  font-family: var(--dt-font-mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--dt-cyan);
}
.dt-footer__intro {
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--dt-muted);
}
.dt-footer__log {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--dt-line-soft);
  display: grid;
  gap: 5px;
}
.dt-footer__loglink {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--dt-amber);
  width: fit-content;
  border-bottom: 1px solid rgba(255, 178, 74, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s var(--dt-ease), border-color 0.2s var(--dt-ease);
}
.dt-footer__loglink:hover {
  color: #FFD28F;
  border-bottom-color: #FFD28F;
}
.dt-footer__logmeta {
  font-family: var(--dt-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(157, 182, 171, 0.72);
}

/* 三栏索引 */
.dt-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 24px;
  counter-reset: dt-fcol;
}
.dt-footer__col { min-width: 0; }
.dt-footer__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--dt-font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dt-cool);
}
.dt-footer__title::before {
  counter-increment: dt-fcol;
  content: counter(dt-fcol, decimal-leading-zero);
  color: rgba(53, 240, 200, 0.45);
  letter-spacing: 0;
}
.dt-footer__list { display: grid; gap: 11px; }
.dt-footer__link {
  display: inline-block;
  font-size: 14.5px;
  color: var(--dt-muted);
  line-height: 1.4;
  transition: color 0.2s var(--dt-ease), transform 0.2s var(--dt-ease);
}
.dt-footer__link:hover {
  color: var(--dt-cyan);
  transform: translateX(3px);
}

/* 联系列 */
.dt-footer__contact { min-width: 0; }

.dt-contact { display: grid; gap: 14px; }
.dt-contact__row {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--dt-line-soft);
}
.dt-contact__label {
  font-family: var(--dt-font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(157, 182, 171, 0.78);
}
.dt-contact__value {
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--dt-paper);
  word-break: break-word;
}
.dt-contact__note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(157, 182, 171, 0.82);
}

/* 底栏 */
.dt-footer__bottom {
  margin-top: 54px;
  padding-top: 22px;
  border-top: 1px solid var(--dt-line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 28px;
}
.dt-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 0;
}
.dt-footer__legal > li + li::before {
  content: "/";
  margin-inline: 12px;
  color: rgba(157, 182, 171, 0.4);
}
.dt-footer__legallink {
  font-family: var(--dt-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--dt-muted);
  transition: color 0.2s var(--dt-ease);
}
.dt-footer__legallink:hover { color: var(--dt-cyan); }
.dt-footer__ids {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 20px;
}
.dt-footer__meta,
.dt-footer__icp {
  font-family: var(--dt-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(157, 182, 171, 0.7);
}

/* ---------- 7. 滚动显现（由 JS 添加 .dt-reveal-ready 后生效） ---------- */
[data-reveal] {
  transition:
    opacity 0.55s var(--dt-ease) var(--dt-delay, 0ms),
    transform 0.55s var(--dt-ease) var(--dt-delay, 0ms);
}
.dt-reveal-ready [data-reveal]:not([data-revealed]) {
  opacity: 0;
  transform: translateY(16px);
}

/* ---------- 8. 响应式 ---------- */
@media (max-width: 1024px) {
  .dt-layout { gap: 28px; }
  .dt-layout__rail,
  .dt-layout__body { grid-column: 1 / span 12; }

  .dt-footer__main {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px 36px;
  }
  .dt-footer__brandcol { grid-column: 1 / span 2; }
  .dt-footer__nav { grid-column: 1 / span 1; }
  .dt-footer__contact { grid-column: 2 / span 1; }
  .dt-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 880px) {
  .dt-container { width: min(100% - 32px, 1240px); }

  .dt-header__grid {
    grid-template-columns: 1fr auto 1fr;
    gap: 10px;
    padding-block: 13px 10px;
  }
  .dt-beat__label,
  .dt-beat__value { display: none; }
  .dt-beat { gap: 0; }
  .dt-tools__link { display: none; }
  .dt-tools { gap: 0; }
  .dt-tools__cta { font-size: 12.5px; padding: 10px 14px; }
  .dt-brand__sub { display: none; }
  .dt-brand { gap: 0; }

  .dt-navbar__inner {
    display: flex;
    justify-content: flex-start;
    min-height: 0;
    padding-block: 4px;
  }
  .dt-nav-toggle { display: flex; }

  .dt-nav-shell {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 8px);
    z-index: 80;
    padding: 0;
  }
  .dt-nav-shell[data-open] { display: block; }

  .dt-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--dt-panel);
    border: 1px solid var(--dt-line);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    padding: 8px;
    counter-reset: dt-nav;
  }
  .dt-nav__item { display: block; }
  .dt-nav__link {
    display: flex;
    padding: 14px 14px;
    font-size: 15px;
    border-bottom: 1px solid rgba(157, 182, 171, 0.1);
  }
  .dt-nav__item:last-child .dt-nav__link { border-bottom: 0; }
  .dt-nav__link::after {
    left: 14px;
    right: 14px;
    bottom: 0;
    transform-origin: left center;
  }
  .dt-nav__link[aria-current="page"] {
    background: var(--dt-raise);
    color: var(--dt-cyan);
  }

  .dt-footer { padding-block: 52px 28px; }
  .dt-footer__main {
    grid-template-columns: minmax(0, 1fr);
    gap: 38px;
  }
  .dt-footer__brandcol,
  .dt-footer__nav,
  .dt-footer__contact { grid-column: 1 / -1; }
  .dt-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 20px; }
  .dt-footer__bottom { margin-top: 40px; }
}

@media (max-width: 560px) {
  body { font-size: 16.5px; }
  .dt-footer__nav { grid-template-columns: minmax(0, 1fr); }
  .dt-footer__bottom { flex-direction: column; align-items: flex-start; gap: 16px; }
  .dt-footer__ids { flex-direction: column; align-items: flex-start; gap: 6px; }
  .dt-stat__value { font-size: clamp(2.6rem, 12vw, 3.6rem); }
}

/* ---------- 9. 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;
    transition-delay: 0ms !important;
  }

  .dt-beat__dot { animation: none; box-shadow: 0 0 0 3px rgba(53, 240, 200, 0.22); }

  .dt-reveal-ready [data-reveal]:not([data-revealed]) {
    opacity: 1;
    transform: none;
  }
}