/* ============================================================
   竞猜赛场 · 共享样式 /assets/site.css
   夜间赛场指挥中心 · 直角面板 + 细线网格 + 荧光数据层
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  --ink-0: #050B1A;
  --ink-1: #081A33;
  --ink-2: #0E2444;
  --line: #27456E;
  --line-soft: rgba(39, 69, 110, 0.45);
  --cyan: #2CF4E6;
  --orange: #FF7A1A;
  --violet: #7B5CFF;
  --green: #37E28D;
  --text: #F2F7FF;
  --text-dim: #9DB2D1;

  --font-display: "Oswald", "Barlow Condensed", "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 2px;
  --radius-lg: 4px;
  --gap: 24px;
  --shell: 1320px;
  --shell-pad: 24px;
  --dur: 160ms;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --shadow-pop: 0 18px 48px -24px rgba(0, 0, 0, 0.9);
}

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

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

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

ul, ol { list-style: none; }

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

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

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

a:hover { text-decoration: underline; text-underline-offset: 0.18em; }

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

hr { border: 0; }

/* ---------- 3. 中文排版与基础 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-0);
  background-image:
    radial-gradient(120% 90% at 84% -12%, rgba(123, 92, 255, 0.20), transparent 58%),
    radial-gradient(90% 70% at 4% 0%, rgba(44, 244, 230, 0.10), transparent 62%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(39, 69, 110, 0.18) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(39, 69, 110, 0.18) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: radial-gradient(110% 90% at 50% 0%, #000 0%, rgba(0, 0, 0, 0.35) 55%, transparent 100%);
  mask-image: radial-gradient(110% 90% at 50% 0%, #000 0%, rgba(0, 0, 0, 0.35) 55%, transparent 100%);
  opacity: 0.7;
}

main,
.site-footer { position: relative; z-index: 1; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.35rem, 5.2vw, 4rem); line-height: 1.05; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.65rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); line-height: 1.3; }
h4 { font-size: 1.0625rem; line-height: 1.4; }

p { color: var(--text-dim); }
strong { color: var(--text); font-weight: 700; }

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

/* ---------- 4. 通用工具 ---------- */
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--shell-pad);
  padding-right: var(--shell-pad);
}

.section { padding: 76px 0; }
.section--tight { padding: 48px 0; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 32px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--cyan);
  display: block;
}

.lead {
  max-width: 62ch;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 32px 0;
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #0A0F1E;
  font-weight: 700;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #FF9640;
  border-color: #FF9640;
  box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.45), 0 10px 28px -14px rgba(255, 122, 26, 0.85);
}

.btn-ghost { color: var(--text); }

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(44, 244, 230, 0.07);
  box-shadow: 0 0 0 1px rgba(44, 244, 230, 0.28);
}

/* ---------- 6. 芯片 / 徽章 / 状态 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.chip:hover {
  color: var(--text);
  border-color: var(--cyan);
  text-decoration: none;
}

.chip[aria-pressed="true"],
.chip.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-0);
  font-weight: 700;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.badge--live {
  color: var(--orange);
  border-color: rgba(255, 122, 26, 0.55);
  background: rgba(255, 122, 26, 0.1);
}

.status-dot {
  display: inline-block;
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(55, 226, 141, 0.18);
}

/* ---------- 7. 面板 / 网格 / 图片容器 ---------- */
.panel {
  position: relative;
  padding: 24px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.panel:hover { border-color: rgba(44, 244, 230, 0.55); }

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  aspect-ratio: 16 / 10;
  background-color: var(--ink-1);
  background-image:
    radial-gradient(60% 90% at 18% 112%, rgba(44, 244, 230, 0.22), transparent 62%),
    radial-gradient(55% 85% at 88% -12%, rgba(123, 92, 255, 0.32), transparent 62%),
    radial-gradient(40% 60% at 60% 40%, rgba(255, 122, 26, 0.10), transparent 70%),
    linear-gradient(160deg, #0A1E3A, #050B1A);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 11, 26, 0) 46%, rgba(5, 11, 26, 0.72) 100%);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--plain::after { display: none; }

.media-caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

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

.breadcrumb li + li::before {
  content: "/";
  color: var(--line);
}

.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--cyan); text-decoration: none; }
.breadcrumb [aria-current="page"] { color: var(--text); }

/* ---------- 9. 全宽数据横幅 ---------- */
.data-banner {
  padding: 32px 0;
  background: var(--ink-1);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.data-banner-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

/* ---------- 10. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 14px;
  left: 16px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--cyan);
  border-radius: var(--radius);
  color: var(--ink-0);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  transform: translateY(-240%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  text-decoration: none;
  outline-offset: 3px;
}

/* ---------- 11. Header：悬浮命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 12px 0 10px;
  background: linear-gradient(180deg, rgba(5, 11, 26, 0.96) 0%, rgba(5, 11, 26, 0.78) 72%, rgba(5, 11, 26, 0) 100%);
}

.header-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--shell-pad);
}

.command-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 10px 8px 16px;
  background: rgba(8, 26, 51, 0.94);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.command-bar::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 132px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  pointer-events: none;
}

/* 品牌锁标 */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding-right: 16px;
  border-right: 1px solid var(--line);
  text-decoration: none;
}

.brand-lockup:hover { text-decoration: none; }

.brand-mark {
  display: grid;
  grid-auto-flow: column;
  align-items: end;
  gap: 3px;
  height: 22px;
}

.brand-mark-bar {
  display: block;
  width: 4px;
  height: 100%;
  background: var(--cyan);
}

.brand-mark-bar:nth-child(2) { height: 64%; background: var(--orange); }
.brand-mark-bar:nth-child(3) { height: 82%; background: var(--violet); }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-latin {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--text);
}

.brand-cn {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  border-color: var(--cyan);
  color: var(--cyan);
}

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

.nav-toggle-lines span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

.nav-toggle-label { line-height: 1; }

/* 主导航 */
.primary-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-list::-webkit-scrollbar { display: none; }

.nav-item { flex: 0 0 auto; }

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 11px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
  border-color: var(--line);
  background: var(--ink-2);
  text-decoration: none;
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--line);
  transition: color var(--dur) var(--ease);
}

.nav-link:hover .nav-index { color: var(--cyan); }

.nav-link[aria-current="page"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-0);
  font-weight: 700;
}

.nav-link[aria-current="page"] .nav-index { color: rgba(5, 11, 26, 0.55); }

.nav-link[aria-current="page"]:hover,
.nav-link[aria-current="page"]:focus-visible {
  background: var(--cyan);
  color: var(--ink-0);
  border-color: var(--cyan);
}

.nav-link[aria-current="page"]:focus-visible { outline-color: var(--text); }

.nav-label { display: inline-block; }

/* 右指令区 */
.header-utility {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.quick-chip {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.quick-chip:hover,
.quick-chip:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(44, 244, 230, 0.08);
  text-decoration: none;
}

.utility-link {
  padding: 6px 4px;
  border-bottom: 1px solid transparent;
  color: var(--text-dim);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.utility-link:hover,
.utility-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  text-decoration: none;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--orange);
  border-radius: 999px;
  background: var(--orange);
  color: #0A0F1E;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.header-cta:hover,
.header-cta:focus-visible {
  background: #FF9640;
  box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.5), 0 8px 22px -12px rgba(255, 122, 26, 0.9);
  text-decoration: none;
}

/* 滚动进度尺 */
.scroll-meter {
  position: absolute;
  left: 1px;
  right: 1px;
  bottom: 1px;
  height: 2px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background: rgba(39, 69, 110, 0.55);
  overflow: hidden;
  pointer-events: none;
}

.scroll-meter-fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

/* ---------- 12. Footer ---------- */
.site-footer {
  margin-top: 88px;
  padding-top: 4px;
  background: var(--ink-1);
  border-top: 1px solid var(--line);
}

.footer-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px var(--shell-pad) 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.35fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.footer-brand .brand-lockup {
  border-right: 0;
  padding-right: 0;
}

.footer-summary {
  margin-top: 18px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.footer-col { min-width: 0; }

.footer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.footer-title .mono {
  color: var(--violet);
  font-size: 11px;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-link {
  display: inline-block;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  text-decoration: none;
}

.contact-list { display: grid; gap: 12px; }

.contact-row {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 10px;
  align-items: baseline;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--line);
  text-transform: uppercase;
}

.contact-value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

.contact-value.mono {
  font-size: 13px;
  letter-spacing: 0.02em;
}

.footer-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.strip-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.strip-item .mono {
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 10px;
  color: var(--cyan);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 32px;
  padding-top: 22px;
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.footer-note {
  font-size: 12px;
  color: var(--text-dim);
  opacity: 0.85;
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1180px) {
  .quick-chip { display: none; }
  .header-utility { padding-left: 10px; gap: 6px; }
}

@media (max-width: 980px) {
  :root { --shell-pad: 20px; }

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

  .header-utility { display: none; }

  .brand-lockup {
    border-right: 0;
    padding-right: 0;
    margin-right: auto;
  }

  .command-bar {
    padding: 8px 12px;
    gap: 12px;
  }

  .primary-nav {
    position: absolute;
    left: -1px;
    right: -1px;
    top: calc(100% + 10px);
    display: none;
    padding: 10px;
    background: rgba(5, 11, 26, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-pop);
    z-index: 70;
  }

  .site-header[data-open] .primary-nav { display: block; }

  .nav-list {
    display: block;
    overflow: visible;
  }

  .nav-item + .nav-item { margin-top: 2px; }

  .nav-link {
    display: flex;
    width: 100%;
    padding: 13px 12px;
    font-size: 15px;
    border-color: var(--line-soft);
  }

  .nav-index { font-size: 11px; }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

  .footer-summary { max-width: 52ch; }
}

@media (max-width: 720px) {
  .section { padding: 56px 0; }
  .section--tight { padding: 40px 0; }

  .footer-shell { padding-top: 44px; }
  .footer-top { gap: 28px; }
  .footer-strip { gap: 10px 20px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  :root { --shell-pad: 16px; }

  .brand-latin { font-size: 13px; letter-spacing: 0.16em; }
  .brand-cn { font-size: 9px; letter-spacing: 0.2em; }

  .footer-top { grid-template-columns: 1fr; }

  .contact-row { grid-template-columns: 44px 1fr; }

  .media-frame { aspect-ratio: 4 / 3; }
  .media-frame--wide { aspect-ratio: 16 / 9; }
}

/* ---------- 14. 无障碍：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;
    scroll-behavior: auto !important;
  }

  .scroll-meter-fill { transition: none !important; }
}

/* ---------- 15. 打印 ---------- */
@media print {
  body::before,
  .skip-link,
  .scroll-meter,
  .nav-toggle { display: none !important; }

  body { background: #fff; color: #000; }
  .site-header { position: static; }
  .command-bar,
  .site-footer { border-color: #999; background: #fff; color: #000; }
}