/* =========================================================
   天梭体育看台 · 共享样式表 /assets/site.css
   竞技场夜灯 × 精密仪表盘 · 粗边框硬阴影 · 方切转角
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  margin: 0;
  background: #FFFFFF;
  color: #0B1B2B;
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16.5px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, pre { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { max-width: 100%; display: block; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 3px solid #00E5C7;
  outline-offset: 2px;
}

/* ---------- 设计令牌 ---------- */
:root {
  --c-red: #C8102E;
  --c-red-deep: #8C0B20;
  --c-ink: #0B1B2B;
  --c-ink-2: #12293F;
  --c-ink-3: #1B3A55;
  --c-silver: #E8ECF1;
  --c-white: #FFFFFF;
  --c-cyan: #00E5C7;
  --c-steel: #7A8CA3;
  --c-amber: #FFB020;
  --c-line: #2E4A66;

  --grad-night: linear-gradient(135deg, #0B1B2B 0%, #12293F 60%, #1B3A55 100%);
  --grad-veil: linear-gradient(180deg, rgba(11, 27, 43, .92) 0%, rgba(11, 27, 43, .58) 58%, rgba(11, 27, 43, 0) 100%);

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

  --shadow-hard: 6px 6px 0 rgba(11, 27, 43, .22);
  --shadow-hard-dark: 6px 6px 0 rgba(0, 0, 0, .45);

  --header-h: 108px;
  --max-w: 1280px;
  --radius: 0;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 999;
  display: inline-block;
  padding: 12px 20px;
  background: var(--c-cyan);
  color: var(--c-ink);
  font-weight: 800;
  font-size: 15px;
  text-decoration: none;
  border: 2px solid var(--c-ink);
  transition: top .18s ease;
}
.skip-link:focus {
  top: 12px;
}

/* ---------- 容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: 24px;
}

.page-main {
  min-height: 60vh;
  display: block;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
.grid > .col-3 { grid-column: span 3; }
.grid > .col-4 { grid-column: span 4; }
.grid > .col-6 { grid-column: span 6; }
.grid > .col-8 { grid-column: span 8; }
.grid > .col-12 { grid-column: span 12; }

.stack-24 > * + * { margin-top: 24px; }
.stack-48 > * + * { margin-top: 48px; }

/* ---------- 头部：透明叠加 → 实色 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background-color: transparent;
  background-image: var(--grad-veil);
  border-bottom: 2px solid transparent;
  transition: background-color 240ms ease, border-color 240ms ease, background-image 240ms ease;
}
.site-header.is-solid {
  background-color: var(--c-ink);
  background-image: none;
  border-bottom-color: var(--c-red);
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--c-cyan);
  box-shadow: 0 0 12px rgba(0, 229, 199, .7);
  transition: width .12s linear;
  z-index: 6;
}

/* 顶部快捷条 */
.utility-bar {
  border-bottom: 1px solid rgba(46, 74, 102, .7);
}
.utility-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 34px;
}
.utility-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(232, 236, 241, .72);
  font-family: var(--font-mono);
  white-space: nowrap;
}
.utility-badge-dot {
  width: 7px;
  height: 7px;
  background: var(--c-cyan);
  display: inline-block;
}
.utility-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.utility-nav a {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12.5px;
  letter-spacing: .04em;
  text-decoration: none;
  color: rgba(232, 236, 241, .78);
  border: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.utility-nav a:hover {
  color: var(--c-white);
  border-color: rgba(0, 229, 199, .6);
}
.utility-end {
  display: flex;
  align-items: center;
  gap: 8px;
}
.utility-version {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12.5px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--c-amber);
  text-decoration: none;
  border: 1px solid rgba(255, 176, 32, .55);
  transition: background-color .18s ease, color .18s ease;
}
.utility-version:hover {
  background: rgba(255, 176, 32, .18);
  color: #FFD27A;
}
.utility-reach {
  display: inline-block;
  padding: 3px 12px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--c-white);
  background: var(--c-red);
  text-decoration: none;
  border: 1px solid var(--c-red);
  transition: background-color .18s ease, border-color .18s ease;
}
.utility-reach:hover {
  background: var(--c-red-deep);
  border-color: var(--c-red-deep);
}

/* 品牌行 */
.nav-bar {
  position: relative;
}
.nav-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex: 0 0 auto;
}
.brand-mark {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .04em;
  border: 2px solid rgba(255, 255, 255, .28);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, .4);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.18;
}
.brand-text strong {
  font-size: 19px;
  font-weight: 900;
  color: var(--c-white);
  letter-spacing: .02em;
}
.brand-text em {
  font-style: normal;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: rgba(232, 236, 241, .6);
  font-family: var(--font-mono);
}

/* 主导航 */
.primary-nav {
  margin-left: auto;
}
.primary-nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.primary-nav-list > li { flex: 0 0 auto; }
.primary-nav-list a {
  position: relative;
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(232, 236, 241, .82);
  text-decoration: none;
  border: 2px solid transparent;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.primary-nav-list a:hover {
  color: var(--c-white);
  background: rgba(200, 16, 46, .22);
  border-color: rgba(200, 16, 46, .5);
}
.primary-nav-list a[aria-current="page"] {
  color: var(--c-white);
  font-weight: 800;
  border-color: var(--c-red);
  background: rgba(200, 16, 46, .16);
}
.primary-nav-list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  width: 6px;
  height: 6px;
  background: var(--c-cyan);
  transform: translateX(-50%);
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: transparent;
  border: 2px solid var(--c-line);
  cursor: pointer;
  color: var(--c-white);
  transition: border-color .18s ease, background-color .18s ease;
}
.nav-toggle:hover {
  border-color: var(--c-red);
  background: rgba(200, 16, 46, .2);
}
.nav-toggle-label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
}
.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 14px;
}
.nav-toggle-icon i {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-size: 15.5px;
  font-weight: 800;
  letter-spacing: .04em;
  text-decoration: none;
  border: 2px solid var(--c-ink);
  background: var(--c-white);
  color: var(--c-ink);
  cursor: pointer;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  transition: transform .16s ease, box-shadow .16s ease, background-color .16s ease, color .16s ease, border-color .16s ease;
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(11, 27, 43, .26);
}
.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(11, 27, 43, .3);
}
.btn--red {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
}
.btn--red:hover {
  background: var(--c-red-deep);
  border-color: var(--c-red-deep);
}
.btn--cyan {
  background: var(--c-cyan);
  border-color: var(--c-ink);
  color: var(--c-ink);
}
.btn--ghost {
  background: transparent;
  color: var(--c-white);
  border-color: rgba(232, 236, 241, .5);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, .4);
}
.btn--ghost:hover {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

/* ---------- 标题与文字节奏 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--c-steel);
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.eyebrow::before {
  content: "";
  width: 4px;
  height: 14px;
  background: var(--c-red);
  display: inline-block;
}

.display-title {
  font-size: clamp(34px, 5.4vw, 64px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--c-ink);
}
.display-title--light { color: var(--c-white); }

.display-title-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: .95;
  font-size: clamp(48px, 9vw, 104px);
}

.section-title {
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: -.005em;
  color: var(--c-ink);
}
.section-title--light { color: var(--c-white); }

.vertical-note {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 12.5px;
  letter-spacing: .22em;
  color: var(--c-steel);
  font-family: var(--font-mono);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: #21384F;
}
.prose p + p { margin-top: 18px; }
.prose h2, .prose h3 { margin-top: 32px; margin-bottom: 12px; font-weight: 900; line-height: 1.25; }
.prose h2 { font-size: 26px; }
.prose h3 { font-size: 20px; }
.prose ul, .prose ol { padding-left: 22px; margin: 14px 0; }
.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose li + li { margin-top: 8px; }
.prose a { color: var(--c-red); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { font-weight: 800; }

/* ---------- 面板 ---------- */
.panel {
  position: relative;
  background: var(--c-white);
  border: 2px solid var(--c-ink);
  padding: 24px;
  box-shadow: var(--shadow-hard);
  border-radius: var(--radius);
}
.panel--dark {
  background: var(--c-ink-2);
  border-color: var(--c-line);
  color: var(--c-silver);
  box-shadow: var(--shadow-hard-dark);
}
.panel--red {
  background: var(--c-red);
  border-color: var(--c-red-deep);
  color: var(--c-white);
  box-shadow: var(--shadow-hard-dark);
}

/* ---------- 标签与徽章 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  font-family: var(--font-mono);
  border: 1px solid currentColor;
  background: transparent;
  white-space: nowrap;
}
.tag--amber { color: var(--c-amber); }
.tag--cyan { color: var(--c-cyan); }
.tag--red { color: var(--c-red); }

/* ---------- 横向数据带 ---------- */
.data-band {
  background: var(--c-ink);
  background-image: var(--grad-night);
  border-top: 2px solid var(--c-line);
  border-bottom: 2px solid var(--c-line);
  color: var(--c-silver);
}
.data-band-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2px;
  background: var(--c-line);
}
.data-band-item {
  background: rgba(11, 27, 43, .92);
  padding: 22px 20px;
  min-height: 108px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}
.data-band-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-white);
  letter-spacing: -.03em;
}
.data-band-unit {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-cyan);
  font-family: var(--font-mono);
}
.data-band-label {
  font-size: 13px;
  color: rgba(232, 236, 241, .62);
}

/* ---------- 主题筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-btn {
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  background: transparent;
  color: var(--c-ink);
  border: 2px solid var(--c-ink);
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.filter-btn:hover { background: rgba(200, 16, 46, .12); }
.filter-btn[aria-pressed="true"] {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
}
.filter-bar--dark .filter-btn {
  color: var(--c-silver);
  border-color: var(--c-line);
}
.filter-bar--dark .filter-btn:hover { background: rgba(0, 229, 199, .12); }
.filter-bar--dark .filter-btn[aria-pressed="true"] {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
}

.filter-list { display: contents; }

[data-filter-item] {
  transition: opacity .18s ease, visibility .18s ease, filter .18s ease;
}
[data-filter-item][data-dimmed] {
  opacity: .2;
  visibility: hidden;
  filter: grayscale(1);
  pointer-events: none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-steel);
  font-family: var(--font-mono);
}
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before {
  content: "/";
  color: rgba(122, 140, 163, .55);
}
.breadcrumb a {
  color: var(--c-steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s ease, border-color .16s ease;
}
.breadcrumb a:hover {
  color: var(--c-red);
  border-bottom-color: var(--c-red);
}
.breadcrumb [aria-current="page"] { color: var(--c-ink); font-weight: 700; }

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--c-ink-2);
  border: 2px solid var(--c-line);
  border-radius: var(--radius);
}
.media > img,
.media > picture,
.media > picture > img,
.media > video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media > picture { position: absolute; inset: 0; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--21x9 { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--wide { aspect-ratio: 3 / 1; }
.media--plain { border: 0; background: var(--c-silver); }

/* ---------- 装饰 ---------- */
.grid-veil {
  background-image:
    linear-gradient(rgba(46, 74, 102, .22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 74, 102, .22) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: -1px -1px;
}

.diagonal-band {
  height: 96px;
  background: var(--cut-color, var(--c-ink));
  clip-path: polygon(0 26%, 100% 0, 100% 74%, 0 100%);
  border-top: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
}
.diagonal-band--red { --cut-color: var(--c-red); }

.anchor-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  background: transparent;
  border: 2px solid var(--c-steel);
  color: var(--c-steel);
  font-size: 13px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: border-color .16s ease, color .16s ease, background-color .16s ease;
}
.anchor-btn:hover {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  background: rgba(0, 229, 199, .08);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translate(-50%, 12px);
  z-index: 900;
  padding: 12px 22px;
  background: var(--c-ink);
  color: var(--c-cyan);
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  border: 2px solid var(--c-cyan);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  background: var(--c-ink);
  background-image: var(--grad-night);
  color: var(--c-silver);
  overflow: hidden;
}
.footer-band {
  height: 8px;
  background: var(--c-red);
  border-bottom: 2px solid rgba(0, 0, 0, .3);
}
.footer-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 24px 32px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 48px;
  padding-bottom: 42px;
  border-bottom: 2px solid var(--c-line);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.footer-mark {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 19px;
  border: 2px solid rgba(255, 255, 255, .3);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .45);
}
.footer-name {
  font-size: 22px;
  font-weight: 900;
  color: var(--c-white);
  letter-spacing: .01em;
}
.footer-slogan {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: rgba(232, 236, 241, .58);
  font-family: var(--font-mono);
}
.footer-return {
  margin-top: 14px;
  display: inline-block;
  padding: 13px 24px;
  background: var(--c-red);
  color: var(--c-white);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .04em;
  text-decoration: none;
  border: 2px solid var(--c-red);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, .45);
  transition: transform .16s ease, box-shadow .16s ease, background-color .16s ease, border-color .16s ease;
}
.footer-return:hover {
  background: var(--c-red-deep);
  border-color: var(--c-red-deep);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(0, 0, 0, .5);
}
.footer-return:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, .5);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.footer-col {
  border-top: 2px solid var(--c-line);
  padding-top: 14px;
}
.footer-col-title {
  font-size: 20px;
  font-weight: 900;
  color: var(--c-white);
  letter-spacing: .04em;
  margin-bottom: 12px;
  position: relative;
}
.footer-col-title::after {
  content: "";
  display: block;
  width: 22px;
  height: 3px;
  margin-top: 6px;
  background: var(--c-red);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.footer-col a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  color: rgba(232, 236, 241, .72);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s ease, border-color .16s ease, padding-left .16s ease;
}
.footer-col a:hover {
  color: var(--c-cyan);
  border-bottom-color: rgba(0, 229, 199, .5);
  padding-left: 4px;
}

.footer-meta {
  padding-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: rgba(232, 236, 241, .55);
}
.footer-legal {
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: rgba(232, 236, 241, .7);
}
.footer-service {
  line-height: 1.7;
}
.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    background: var(--c-ink);
    border-top: 2px solid var(--c-line);
    border-bottom: 2px solid var(--c-red);
    box-shadow: 0 18px 34px rgba(0, 0, 0, .45);
    display: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .primary-nav[data-open] {
    display: block;
  }
  .primary-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 20px;
  }
  .primary-nav-list a {
    padding: 15px 12px;
    font-size: 16px;
    border: 0;
    border-bottom: 1px solid rgba(46, 74, 102, .8);
    border-left: 3px solid transparent;
  }
  .primary-nav-list a:hover {
    background: rgba(200, 16, 46, .18);
    border-left-color: var(--c-red);
  }
  .primary-nav-list a[aria-current="page"] {
    border: 0;
    border-bottom: 1px solid rgba(46, 74, 102, .8);
    border-left: 3px solid var(--c-red);
    background: rgba(200, 16, 46, .16);
  }
  .primary-nav-list a[aria-current="page"]::after {
    left: auto;
    right: 14px;
    bottom: 50%;
    transform: translateY(50%);
  }
  .grid > .col-3,
  .grid > .col-4,
  .grid > .col-6,
  .grid > .col-8 {
    grid-column: span 12;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }
  .utility-inner {
    padding: 8px 18px;
    gap: 12px;
  }
  .utility-nav { display: none; }
  .nav-inner {
    padding: 0 18px;
    min-height: 62px;
    gap: 14px;
  }
  .brand-text strong { font-size: 17px; }
  .brand-text em { font-size: 10.5px; letter-spacing: .06em; }
  .footer-cols {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-inner {
    padding: 40px 18px 26px;
  }
  .container { padding-inline: 18px; }
  .panel { padding: 18px; }
}

@media (max-width: 420px) {
  .utility-badge { font-size: 11px; }
  .utility-version { font-size: 11.5px; padding: 3px 8px; }
  .utility-reach { font-size: 11.5px; padding: 3px 9px; }
}

/* ---------- 低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress { transition: none; }
}