/* ============================================================
   万搏体育 · 共享站点样式 /assets/site.css
   纵向叙事长卷 · 深靛蓝 + 活力橙 + 荧光青 · 现代粗野主义
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 170px;
}

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

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

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

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

a { color: inherit; }

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 品牌色 */
  --ink-900: #070C1C;
  --ink-800: #0E1B3D;
  --ink-700: #16264F;
  --orange:  #FF6A1A;
  --cyan:    #22E3C3;
  --blue:    #3D7BFF;
  --mist:    #E6EAF2;
  --paper:   #F7F9FC;
  --graphite:#9AA6BF;

  /* 语义色 */
  --bg:        var(--ink-800);
  --bg-alt:    var(--ink-700);
  --bg-deep:   var(--ink-900);
  --bg-light:  var(--mist);
  --fg:        var(--paper);
  --fg-dim:    var(--graphite);
  --fg-dark:   var(--ink-800);
  --accent:    var(--orange);
  --accent-2:  var(--cyan);
  --accent-3:  var(--blue);

  /* 线条与阴影 */
  --hair:      1px solid rgba(154, 166, 191, .22);
  --edge:      2px solid var(--ink-700);
  --edge-soft: 2px solid rgba(154, 166, 191, .28);
  --shadow-hard:  0 6px 0 var(--ink-900);
  --shadow-soft:  0 6px 0 rgba(7, 12, 28, .55);

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

  /* 字号阶梯 12 / 14 / 16 / 20 / 28 / 40 / 64 */
  --fs-12: 12px;
  --fs-14: 14px;
  --fs-16: 16px;
  --fs-20: 20px;
  --fs-28: 28px;
  --fs-40: 40px;
  --fs-64: 64px;

  /* 版式尺度 */
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--bg);
  background-image:
    linear-gradient(90deg, rgba(61, 123, 255, .07) 1px, transparent 1px),
    linear-gradient(0deg, rgba(61, 123, 255, .05) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-16);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: .01em;
}

p { text-wrap: pretty; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
}

.label {
  font-family: var(--font-sans);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

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

/* ---------- 4. 容器与区段 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.band { padding-block: clamp(44px, 6vw, 92px); }

.band--deep  { background: var(--ink-900); }
.band--alt   { background: var(--ink-700); }

.band--light {
  background: var(--mist);
  color: var(--ink-800);
}

.band--light .eyebrow,
.band--light .section-label { color: var(--ink-800); }

.band--light .section-num { color: var(--orange); }

.band--light .section-title,
.band--light h2,
.band--light h3 { color: var(--ink-800); }

.band--light .section-desc,
.band--light p { color: #33405E; }

/* ---------- 5. 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2vw, 28px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

.grid--asym {
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  align-items: start;
}

@media (max-width: 900px) {
  .grid--asym { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 6. 章节开场 ---------- */
.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2vw, 30px);
  align-items: start;
  margin-bottom: clamp(22px, 3vw, 42px);
}

.section-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--accent);
  padding-top: .18em;
}

.section-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.section-title {
  margin-top: 8px;
  font-size: clamp(26px, 3.6vw, 40px);
  color: var(--paper);
}

.section-desc {
  margin-top: 14px;
  max-width: 58ch;
  font-size: 15px;
  color: var(--fg-dim);
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-decoration: none;
  background: var(--accent);
  color: var(--ink-900);
  border: 2px solid var(--ink-900);
  box-shadow: var(--shadow-hard);
  transition: transform 160ms var(--ease),
              box-shadow 160ms var(--ease),
              background-color 160ms var(--ease),
              color 160ms var(--ease),
              border-color 160ms var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 0 var(--ink-900);
  background: var(--accent-2);
}

.btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--ink-900);
}

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 0 6px 0 rgba(247, 249, 252, .22);
}

.btn--ghost:hover {
  background: var(--paper);
  color: var(--ink-800);
  box-shadow: 0 8px 0 rgba(247, 249, 252, .3);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs {
  padding-block: 18px;
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--graphite);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li + li::before {
  content: "/";
  color: rgba(154, 166, 191, .55);
}

.breadcrumbs a {
  color: var(--graphite);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.breadcrumbs a:hover { color: var(--accent-2); }

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

/* ---------- 9. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--fg-dim);
  border: 2px solid rgba(154, 166, 191, .35);
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.tag--batch { border-color: var(--accent); color: var(--accent); }
.tag--live  { border-color: var(--accent-2); color: var(--accent-2); }

.tag:hover { border-color: var(--accent-2); color: var(--accent-2); }

/* ---------- 10. 卡片 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--ink-700);
  border: var(--edge-soft);
  transition: transform 180ms var(--ease),
              border-color 180ms var(--ease),
              box-shadow 180ms var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-2);
  box-shadow: var(--shadow-soft);
}

.card--accent {
  background: var(--ink-800);
  border-color: var(--accent);
  box-shadow: var(--shadow-hard);
}

.card--light {
  background: var(--paper);
  color: var(--ink-800);
  border-color: var(--ink-800);
}

.card-title {
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  line-height: 1.35;
  color: var(--paper);
}

.card--light .card-title { color: var(--ink-800); }

/* ---------- 11. 图片容器（页面阶段填 img / svg） ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--ink-700);
  border: 2px solid var(--ink-700);
  aspect-ratio: 16 / 9;
}

.media-frame > img,
.media-frame > svg,
.media-frame > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: .9;
  pointer-events: none;
}

.media-frame--plain::after { display: none; }

.media-frame--wide   { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall   { aspect-ratio: 3 / 4; }
.media-frame--flat   { aspect-ratio: 4 / 3; }

.media-caption {
  margin-top: 10px;
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--fg-dim);
}

/* ---------- 12. 长文与数据表 ---------- */
.prose {
  max-width: 68ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--mist);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  margin-top: 1.9em;
  font-size: clamp(22px, 2.6vw, 28px);
  color: var(--paper);
}

.prose h3 {
  margin-top: 1.6em;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.prose a {
  color: var(--accent-2);
  text-underline-offset: 3px;
}

.prose strong { color: var(--paper); }

.prose ul { display: grid; gap: 10px; }

.prose ul li {
  position: relative;
  padding-left: 22px;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 2px;
  background: var(--accent);
}

.data-table {
  width: 100%;
  font-size: var(--fs-14);
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: var(--hair);
}

.data-table thead th {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-2);
  border-bottom: 2px solid var(--ink-700);
}

.data-table tbody tr {
  transition: background-color 160ms var(--ease);
}

.data-table tbody tr:hover {
  background: rgba(34, 227, 195, .08);
}

.data-table td.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--accent);
}

/* ============================================================
   13. 共享头部
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink-800);
  border-bottom: 2px solid var(--ink-700);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 120;
  transform: translate(-50%, -140%);
  padding: 11px 20px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-decoration: none;
  background: var(--accent);
  color: var(--ink-900);
  border: 2px solid var(--ink-900);
  transition: transform 180ms var(--ease);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* --- 数据带 --- */
.utility-bar {
  background: var(--ink-900);
  border-bottom: 1px solid rgba(154, 166, 191, .18);
}

.utility-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 28px;
  padding-block: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--fg-dim);
}

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

.utility-label {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.utility-value { color: var(--fg); }

.utility-layer { margin-left: auto; }

/* --- 刊头 --- */
.masthead { background: var(--ink-800); }

.masthead-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 3vw, 44px);
  padding-block: clamp(18px, 2.6vw, 30px);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-glyph {
  display: block;
  width: 46px;
  height: 46px;
  border: 2px solid var(--accent-2);
  background:
    linear-gradient(135deg, transparent 0 44%, var(--accent-2) 44% 56%, transparent 56%),
    linear-gradient(45deg, var(--ink-900) 0 50%, var(--accent) 50% 100%);
  transition: border-color 180ms var(--ease);
}

.brand-mark:hover .brand-glyph { border-color: var(--accent); }

.brand-report {
  min-width: 0;
  text-align: center;
}

.brand-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.brand-title {
  display: inline-block;
  margin-top: 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.06;
  letter-spacing: .08em;
  color: var(--paper);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.brand-title:hover { color: var(--accent-2); }

.brand-tagline {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--fg-dim);
}

.masthead-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.batch-tag {
  display: inline-block;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--ink-900);
  background: var(--accent);
  border: 2px solid var(--ink-900);
  box-shadow: 0 4px 0 rgba(7, 12, 28, .7);
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.batch-tag:hover {
  background: var(--accent-2);
  color: var(--ink-900);
}

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 3px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 2px solid var(--accent-2);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.cta-link::after {
  content: "→";
  font-family: var(--font-mono);
  transition: transform 180ms var(--ease);
}

.cta-link:hover {
  color: var(--accent-2);
  border-color: var(--accent);
}

.cta-link:hover::after { transform: translateX(4px); }

/* --- 栏目导航 --- */
.main-nav {
  position: relative;
  background: var(--ink-800);
  border-top: 2px solid var(--ink-700);
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 clamp(2px, 1.4vw, 20px);
}

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 6px 13px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--fg-dim);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.nav-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 10px;
  letter-spacing: 0;
  color: rgba(154, 166, 191, .6);
  transition: color 180ms var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease);
}

.nav-link:hover { color: var(--paper); }
.nav-link:hover .nav-num { color: var(--accent-2); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--paper); }
.nav-link[aria-current="page"] .nav-num { color: var(--accent); }

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--accent);
}

.nav-toggle { display: none; }

/* --- 阅读进度条 --- */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(154, 166, 191, .14);
  pointer-events: none;
}

.scroll-progress > span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--accent));
  transform: scaleX(0);
  transform-origin: left center;
}

/* ============================================================
   14. 共享页脚
   ============================================================ */
.site-footer {
  background: var(--ink-900);
  color: var(--mist);
  border-top: 3px solid var(--accent);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr) minmax(0, 1.2fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(38px, 5vw, 68px);
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 26px;
  letter-spacing: .1em;
  color: var(--paper);
}

.footer-brand-note {
  margin-top: 12px;
  max-width: 30em;
  font-size: 13px;
  line-height: 1.8;
  color: var(--fg-dim);
}

.footer-brand-rule {
  display: block;
  width: 68px;
  height: 4px;
  margin-top: 20px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 36px);
}

.footer-heading {
  margin-bottom: 12px;
  padding-bottom: 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid rgba(154, 166, 191, .24);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-list a {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  font-size: var(--fs-14);
  color: var(--mist);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.footer-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms var(--ease);
}

.footer-list a:hover { color: var(--accent-2); }
.footer-list a:hover::after { transform: scaleX(1); }

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

.contact-row {
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.contact-row .mono { color: var(--paper); }

.contact-key {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--graphite);
}

.footer-bottom {
  border-top: 1px solid rgba(154, 166, 191, .2);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  padding-block: 16px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .02em;
  color: var(--graphite);
}

.to-top {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--paper);
  background: transparent;
  border: 2px solid rgba(154, 166, 191, .35);
  transition: border-color 180ms var(--ease),
              color 180ms var(--ease),
              background-color 180ms var(--ease);
}

.to-top:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
  background: rgba(34, 227, 195, .06);
}

/* ============================================================
   15. 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }

  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 130px; }

  .masthead-inner {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 14px;
    padding-block: 16px;
  }

  .brand-report { text-align: left; }

  .brand-kicker {
    font-size: 10px;
    letter-spacing: .18em;
  }

  .brand-tagline { letter-spacing: .08em; }

  .masthead-aside {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 18px;
    padding-top: 4px;
  }

  .utility-layer {
    margin-left: 0;
    width: 100%;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 14px var(--gutter);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .16em;
    color: var(--paper);
    text-align: left;
  }

  .nav-toggle-bars {
    position: relative;
    flex: none;
    width: 20px;
    height: 2px;
    background: var(--accent-2);
    transition: background-color 160ms var(--ease);
  }

  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    content: "";
    position: absolute;
    left: 0;
    width: 20px;
    height: 2px;
    background: var(--accent-2);
    transition: transform 180ms var(--ease);
  }

  .nav-toggle-bars::before { top: -6px; }
  .nav-toggle-bars::after  { top: 6px; }

  [data-nav][data-open] .nav-toggle-bars { background: transparent; }
  [data-nav][data-open] .nav-toggle-bars::before {
    transform: translateY(6px) rotate(45deg);
  }
  [data-nav][data-open] .nav-toggle-bars::after {
    transform: translateY(-6px) rotate(-45deg);
  }

  .nav-list { display: none; }

  [data-nav][data-open] .nav-list {
    display: grid;
    gap: 0;
    padding: 0 var(--gutter) 14px;
    border-top: 1px solid rgba(154, 166, 191, .18);
  }

  .nav-link {
    justify-content: flex-start;
    padding: 13px 0;
    border-bottom: 1px solid rgba(154, 166, 191, .14);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] { color: var(--accent); }
}

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-column: auto; }
  .to-top { margin-left: 0; }
}

/* ============================================================
   16. 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;
  }

  .card:hover,
  .btn:hover { transform: none; }
}