/* ==========================================================================
   体育注册送68 · K68 共享样式表 /assets/site.css
   负责：reset、变量、中文排版、头部、页脚、通用组件、响应式
   ========================================================================== */

/* ---------- 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, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

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

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

button, input, select, textarea { font: inherit; color: inherit; }

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

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

table { border-collapse: collapse; border-spacing: 0; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  /* 色彩 */
  --ink-green: #1E3A32;
  --night-ink: #14261F;
  --sand-gold: #D4A017;
  --rock-red: #B23A2E;
  --data-cyan: #2EC4B6;
  --cream: #F4EFE4;
  --pale-sand: #E8DCC3;
  --brown-ink: #2A211B;
  --stone-grey: #7A7265;
  --stone-line: #C9BE9F;
  --etch-white: #FBF8F1;

  /* 派生 */
  --on-dark: rgba(244, 239, 228, 0.78);
  --on-dark-strong: #F4EFE4;
  --on-dark-faint: rgba(244, 239, 228, 0.52);
  --hairline-gold: rgba(212, 160, 23, 0.24);
  --hairline-cream: rgba(244, 239, 228, 0.14);
  --cyan-wash: rgba(46, 196, 182, 0.10);

  /* 字体 */
  --font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Sarasa Mono SC", "Source Han Mono SC", monospace;

  /* 字号阶梯 */
  --step-1: 17px;
  --step-0: 16px;
  --step-m1: 14px;
  --step-2: 19px;
  --step-3: 24px;
  --step-4: 32px;
  --step-5: 44px;

  /* 尺度 */
  --shell: 1360px;
  --pad-x: clamp(16px, 3.4vw, 48px);
  --gap: clamp(16px, 2.4vw, 34px);
  --r: 2px;

  /* 阴影 */
  --shadow-hair: 0 1px 0 rgba(42, 33, 27, 0.06);
  --shadow-nav: 0 1px 0 rgba(212, 160, 23, 0.22), 0 14px 30px -22px rgba(0, 0, 0, 0.85);

  /* 边界 */
  --rule: 1px solid var(--stone-line);
  --rule-dark: 1px solid var(--hairline-gold);

  --progress: 0%;
}

/* ---------- 3. 文档基础 ---------- */
body {
  font-family: var(--font-body);
  font-size: var(--step-1);
  font-weight: 400;
  line-height: 1.85;
  color: var(--brown-ink);
  background-color: var(--cream);
  background-image:
    repeating-linear-gradient(0deg, rgba(42, 33, 27, 0.022) 0 1px, transparent 1px 22px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--sand-gold);
  color: var(--night-ink);
}

/* ---------- 4. 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--brown-ink);
  text-shadow: 0 1px 0 rgba(42, 33, 27, 0.10);
}

h1 { font-size: clamp(30px, 4.6vw, 44px); }
h2 { font-size: clamp(24px, 3.2vw, 32px); }
h3 { font-size: var(--step-3); }
h4 { font-size: var(--step-2); }

p { max-width: 78ch; }

strong { font-weight: 700; }

small { font-size: var(--step-m1); }

/* ---------- 5. 焦点与可达性 ---------- */
:focus-visible {
  outline: 2px solid var(--rock-red);
  outline-offset: 2px;
  border-radius: 1px;
}

.site-header :focus-visible,
.site-footer :focus-visible,
.header-navline :focus-visible {
  outline-color: var(--data-cyan);
}

/* ---------- 6. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 300;
  padding: 10px 16px;
  background: var(--sand-gold);
  color: var(--night-ink);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  font-weight: 700;
  border-radius: var(--r);
  transition: top 140ms linear;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 7. 布局系统 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

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

.rail { grid-column: 1 / span 4; }
.column { grid-column: 5 / span 8; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  gap: var(--gap);
  align-items: start;
}

.split--32 { grid-template-columns: minmax(0, 32fr) minmax(0, 68fr); }

.page-body {
  padding-block: clamp(28px, 4vw, 58px) clamp(40px, 6vw, 84px);
}

.prose { max-width: 72ch; }
.prose p + p { margin-top: 1.05em; }
.prose h2, .prose h3 { margin-top: 1.6em; margin-bottom: 0.55em; }
.prose ul, .prose ol { margin-top: 0.8em; }
.prose li + li { margin-top: 0.5em; }

/* ---------- 8. 索引与数字 ---------- */
.index-label {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stone-grey);
  line-height: 1.5;
}

.index-label--gold { color: #8A6A0B; }
.index-label--cyan { color: #1C8078; }
.index-label--red { color: var(--rock-red); }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--brown-ink);
}

.num--xl { font-size: clamp(32px, 5.4vw, 40px); }
.num--lg { font-size: clamp(22px, 3.4vw, 28px); }
.num--sm { font-size: 16px; }
.num--cyan { color: #1C8078; }
.num--red { color: var(--rock-red); }

.num--underline {
  border-bottom: 2px solid var(--sand-gold);
  padding-bottom: 2px;
}

.field-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 18px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: var(--rule);
}

.field-row__key {
  font-size: var(--step-m1);
  color: var(--stone-grey);
  line-height: 1.6;
}

.field-row__val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: var(--step-0);
  color: var(--brown-ink);
}

/* ---------- 9. 头部 · 品牌行 ---------- */
.site-header {
  position: relative;
  z-index: 60;
}

.header-brandline {
  background: var(--ink-green);
  color: var(--on-dark-strong);
  border-bottom: var(--rule-dark);
}

.header-brandline__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
  min-height: 66px;
  padding-block: 11px;
}

.brand__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand__mark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--night-ink);
  background: var(--sand-gold);
  padding: 5px 9px;
  border-radius: var(--r);
  line-height: 1.25;
}

.brand__text { display: block; }

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--etch-white);
  line-height: 1.35;
}

.brand__desc {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--on-dark-faint);
  line-height: 1.5;
}

.brandline__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--on-dark-faint);
  max-width: none;
}

.brandline__note { white-space: nowrap; }

.brandline__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.textlink {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--on-dark);
  border-bottom: 1px solid rgba(244, 239, 228, 0.32);
  padding-bottom: 2px;
  transition: color 120ms linear, border-color 120ms linear;
}

.textlink:hover {
  color: var(--sand-gold);
  border-bottom-color: var(--sand-gold);
}

/* ---------- 10. 头部 · 栏目行 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 7px 11px;
  border: 1px solid rgba(244, 239, 228, 0.3);
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--on-dark-strong);
  transition: border-color 120ms linear, color 120ms linear;
}

.nav-toggle:hover { border-color: var(--sand-gold); color: var(--sand-gold); }

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
}

.header-navline {
  position: sticky;
  top: 0;
  z-index: 55;
  background: var(--night-ink);
  border-bottom: var(--rule-dark);
  transition: box-shadow 160ms linear;
}

.site-header[data-stuck] .header-navline {
  box-shadow: var(--shadow-nav);
}

.navline {
  position: relative;
}

.navline__list {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  max-height: none;
  overflow: visible;
}

.navline__item {
  position: relative;
}

.navline__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 18px 13px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--on-dark);
  border-bottom: 2px solid transparent;
  transition: color 120ms linear, background-color 120ms linear,
              border-color 120ms linear, padding 160ms linear;
}

.site-header[data-stuck] .navline__link {
  padding-block: 11px 9px;
}

.navline__link:hover {
  color: var(--etch-white);
  background: rgba(212, 160, 23, 0.07);
}

.navline__link[aria-current="page"] {
  color: var(--sand-gold);
  border-bottom-color: var(--sand-gold);
}

.navline__index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--data-cyan);
  line-height: 1.5;
}

.navline__label { white-space: nowrap; }

.navline__fields {
  position: absolute;
  left: 0;
  top: 100%;
  z-index: 6;
  padding: 10px 16px 11px;
  min-width: 240px;
  white-space: nowrap;
  background: var(--night-ink);
  border-top: 1px solid rgba(46, 196, 182, 0.34);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--on-dark);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity 130ms linear, transform 130ms linear, visibility 0s linear 130ms;
}

.navline__item:last-child .navline__fields {
  left: auto;
  right: 0;
}

.navline__item:hover .navline__fields,
.navline__item:focus-within .navline__fields {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s, 0s, 0s;
}

.navline__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  display: block;
  height: 2px;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--sand-gold), var(--data-cyan));
  transition: width 90ms linear;
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--ink-green);
  color: var(--on-dark);
  border-top: 3px solid var(--sand-gold);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(112deg, rgba(212, 160, 23, 0.055) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(0deg, rgba(244, 239, 228, 0.03) 0 1px, transparent 1px 26px);
}

.footer__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: clamp(22px, 3vw, 46px);
  padding-block: clamp(34px, 5vw, 62px) clamp(26px, 3.6vw, 46px);
}

.footer__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  color: var(--etch-white);
  line-height: 1.25;
  text-shadow: none;
  max-width: none;
}

.footer__tagline {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sand-gold);
  max-width: none;
}

.footer__note {
  margin-top: 14px;
  font-size: var(--step-m1);
  line-height: 1.8;
  color: var(--on-dark);
  max-width: 34ch;
}

.footer__col { min-width: 0; }

.footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sand-gold);
  margin-bottom: 14px;
  text-shadow: none;
}

.footer__list li + li { margin-top: 9px; }

.footer__list--meta li {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  line-height: 1.75;
  color: var(--on-dark);
  word-break: break-word;
}

.footer__link {
  font-size: var(--step-m1);
  color: var(--on-dark);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 120ms linear, border-color 120ms linear;
}

.footer__link:hover,
.footer__link:focus-visible {
  color: var(--etch-white);
  border-bottom-color: var(--sand-gold);
}

.footer__base {
  position: relative;
  background: var(--night-ink);
  border-top: 1px solid var(--hairline-cream);
}

.footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  padding-block: 16px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--on-dark-faint);
}

.footer__base-inner p { max-width: none; }

.footer__icp { color: var(--sand-gold); }

/* ---------- 12. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.4;
  transition: background-color 130ms linear, color 130ms linear, border-color 130ms linear;
}

.btn--gold {
  background: var(--sand-gold);
  color: var(--night-ink);
  font-weight: 700;
}

.btn--gold:hover { background: #E0AF2A; }

.btn--ghost {
  border-color: var(--stone-line);
  color: var(--brown-ink);
}

.btn--ghost:hover {
  border-color: var(--ink-green);
  background: var(--pale-sand);
}

.btn--dark {
  background: var(--ink-green);
  color: var(--cream);
}

.btn--dark:hover { background: var(--night-ink); }

/* ---------- 13. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--hairline-gold);
  border-radius: var(--r);
  background: rgba(212, 160, 23, 0.08);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--sand-gold);
}

.tag--cyan {
  border-color: rgba(46, 196, 182, 0.36);
  background: var(--cyan-wash);
  color: var(--data-cyan);
}

.tag--red {
  border-color: rgba(178, 58, 46, 0.42);
  background: rgba(178, 58, 46, 0.14);
  color: #E2917F;
}

.tag--paper {
  border-color: var(--stone-line);
  background: var(--pale-sand);
  color: var(--brown-ink);
}

/* ---------- 14. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.07em;
  line-height: 1.6;
  color: var(--stone-grey);
}

.breadcrumbs a {
  color: var(--brown-ink);
  border-bottom: 1px solid var(--stone-line);
  padding-bottom: 1px;
  transition: color 120ms linear, border-color 120ms linear;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--rock-red);
  border-bottom-color: var(--sand-gold);
}

.breadcrumbs__sep {
  color: var(--stone-line);
  font-size: 11px;
}

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

/* ---------- 15. 折叠内容组 ---------- */
.accordion {
  border-top: var(--rule);
}

.accordion__item {
  border-bottom: var(--rule);
}

.accordion__trigger {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  padding: 15px 2px 15px 0;
  text-align: left;
  font-size: var(--step-0);
  font-weight: 500;
  line-height: 1.6;
  color: var(--brown-ink);
  transition: color 120ms linear;
}

.accordion__trigger:hover { color: var(--rock-red); }

.accordion__trigger::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
  color: var(--data-cyan);
  transition: color 120ms linear;
}

.accordion__trigger[aria-expanded="true"] {
  color: var(--brown-ink);
  border-left: 2px solid var(--sand-gold);
  padding-left: 14px;
}

.accordion__trigger[aria-expanded="true"]::after {
  content: "\2212";
  color: var(--rock-red);
}

.accordion__panel {
  overflow: hidden;
  max-height: 0;
  visibility: hidden;
  transition: max-height 180ms linear, visibility 0s linear 180ms;
}

.accordion__panel.is-open {
  visibility: visible;
  transition: max-height 180ms linear, visibility 0s linear 0s;
}

.accordion__panel-inner {
  padding: 2px 0 20px;
}

/* ---------- 16. 数据表 ---------- */
.dtable {
  width: 100%;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--step-m1);
  line-height: 1.7;
  background: var(--etch-white);
}

.dtable thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 10px 13px;
  background: var(--night-ink);
  color: var(--pale-sand);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: left;
  white-space: nowrap;
}

.dtable td {
  padding: 11px 13px;
  border-bottom: var(--rule);
  color: var(--brown-ink);
}

.dtable tbody tr {
  transition: background-color 120ms linear;
}

.dtable tbody tr:hover { background: var(--cyan-wash); }

.dtable tbody tr:hover td:first-child {
  box-shadow: inset 2px 0 0 var(--data-cyan);
}

.dtable caption {
  caption-side: top;
  padding: 0 0 12px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone-grey);
}

/* ---------- 17. 卡片 ---------- */
.card {
  background: var(--etch-white);
  border: var(--rule);
  border-radius: var(--r);
  box-shadow: var(--shadow-hair);
}

.card--sand { background: var(--pale-sand); }

.card--dark {
  background: var(--night-ink);
  border-color: var(--hairline-gold);
  color: var(--on-dark);
}

.card__body { padding: clamp(16px, 2.2vw, 24px); }

/* ---------- 18. 图片容器基础 ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--pale-sand);
  border: var(--rule);
  border-radius: var(--r);
  aspect-ratio: 16 / 9;
}

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

.media--strip { aspect-ratio: 26 / 9; }
.media--band { aspect-ratio: 16 / 5; }
.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

.media--contour {
  background-color: var(--pale-sand);
  background-image:
    repeating-linear-gradient(0deg, rgba(30, 58, 50, 0.07) 0 1px, transparent 1px 14px),
    repeating-linear-gradient(90deg, rgba(30, 58, 50, 0.05) 0 1px, transparent 1px 14px);
}

.media--veil::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(30, 58, 50, 0) 42%, rgba(30, 58, 50, 0.62) 100%);
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--etch-white);
  background: linear-gradient(180deg, rgba(20, 38, 31, 0) 0%, rgba(20, 38, 31, 0.86) 78%);
}

/* ---------- 19. 工具类 ---------- */
.rule-slant {
  height: 2px;
  border: 0;
  background: linear-gradient(90deg, var(--sand-gold), var(--data-cyan) 58%, transparent 100%);
  transform: skewY(-0.7deg);
  transform-origin: left center;
}

.rule-plain {
  height: 0;
  border: 0;
  border-top: var(--rule);
}

.stack > * + * { margin-top: var(--gap); }
.stack-sm > * + * { margin-top: 12px; }

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

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.note-text {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.75;
  color: var(--stone-grey);
}

/* ---------- 20. 响应式 ---------- */
@media (max-width: 1180px) {
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer__col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 1024px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .rail { grid-column: 1 / span 6; }
  .column { grid-column: 1 / span 6; }
  .split,
  .split--32 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .header-brandline__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand actions"
      "meta meta";
    row-gap: 9px;
    padding-block: 13px;
  }

  .brand { grid-area: brand; }
  .brandline__meta { grid-area: meta; }
  .brandline__actions { grid-area: actions; }

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

  .navline__list {
    display: block;
    max-height: 0;
    overflow: hidden;
    transition: max-height 220ms linear;
  }

  .navline[data-open] .navline__list { max-height: 30rem; }

  .navline__item {
    border-top: 1px solid var(--hairline-cream);
  }

  .navline__item:first-child { border-top: 0; }

  .navline__link {
    padding: 13px 2px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .site-header[data-stuck] .navline__link { padding-block: 13px; }

  .navline__link[aria-current="page"] {
    border-left-color: var(--sand-gold);
    padding-left: 12px;
  }

  .navline__fields { display: none; }
}

@media (max-width: 720px) {
  body { font-size: var(--step-0); }

  .footer__grid { grid-template-columns: 1fr; gap: 28px; }

  .footer__base-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .brandline__actions { gap: 10px; }

  .textlink { display: none; }
}

@media (max-width: 520px) {
  .brand__desc { display: none; }
  .brandline__meta { font-size: 11px; }
  .footer__note { max-width: none; }
}

/* ---------- 21. 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;
    transition-delay: 0s !important;
  }

  .navline__fields,
  .navline__link,
  .footer__link,
  .btn,
  .textlink {
    transform: none !important;
  }
}