/* ============================================================
   乐动赛场 · 共享样式表 /assets/site.css
   数据指挥中心基调：蓝图网格 + 珠宝色分区 + 纸张叠层
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

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

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

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; width: 100%; }

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-night: #0B1230;
  --ink-deep: #101A3A;
  --cyan: #2FE3D6;
  --mint: #8AF3E6;
  --goal: #FF6B3D;
  --wine: #6E1F3C;
  --wine-deep: #4A1430;
  --indigo: #33265E;
  --indigo-deep: #1D1740;
  --teal-deep: #0C4744;
  --teal-darker: #062B29;
  --paper: #F4F6F8;
  --graphite: #1B2233;
  --fog: #9AA6C4;

  --line: rgba(154, 166, 196, 0.22);
  --line-soft: rgba(154, 166, 196, 0.14);
  --line-cyan: rgba(47, 227, 214, 0.38);

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", "SF Mono", Consolas, "Liberation Mono", "Courier New", monospace;

  --wrap: 1240px;
  --gutter: 24px;
  --radius: 3px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --rail-w: 0px;
}

/* ---------- 3. 全局排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-night);
  background-image:
    linear-gradient(rgba(154, 166, 196, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 166, 196, 0.05) 1px, transparent 1px),
    radial-gradient(1200px 700px at 10% -12%, rgba(47, 227, 214, 0.12), transparent 62%),
    radial-gradient(900px 620px at 100% 4%, rgba(255, 107, 61, 0.08), transparent 58%);
  background-size: 64px 64px, 64px 64px, auto, auto;
  background-attachment: fixed;
  min-height: 100vh;
  padding-left: var(--rail-w);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

strong, b { font-weight: 700; }

::selection { background: rgba(47, 227, 214, 0.35); color: #04211f; }

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

#main-content:focus { outline: none; }

/* ---------- 4. 通用容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.container--narrow { max-width: 760px; }

.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.divider {
  height: 1px;
  border: 0;
  background: var(--line-soft);
  margin: 28px 0;
}

/* ---------- 5. 章节与色带分区 ---------- */
.zone {
  position: relative;
  padding: clamp(52px, 7vw, 104px) 0;
}

.zone > * { position: relative; z-index: 1; }

.zone::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(154, 166, 196, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 166, 196, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
}

.zone--panel { background: var(--ink-deep); }
.zone--teal { background: linear-gradient(140deg, var(--teal-deep), var(--teal-darker)); }
.zone--wine { background: linear-gradient(140deg, var(--wine), var(--wine-deep)); }
.zone--indigo { background: linear-gradient(140deg, var(--indigo), var(--indigo-deep)); }

.zone--paper { background: var(--paper); color: var(--graphite); }
.zone--paper::before {
  background-image:
    linear-gradient(rgba(27, 34, 51, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 34, 51, 0.07) 1px, transparent 1px);
}
.zone--paper h1,
.zone--paper h2,
.zone--paper h3,
.zone--paper h4 { color: var(--graphite); }

/* ---------- 6. 标题与索引 ---------- */
.section-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-index::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.zone--paper .section-index { color: #0C7A72; }

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
  margin-bottom: 10px;
}

.zone--paper .eyebrow { color: #5A6580; }

.display-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 7.4vw, 108px);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin: 16px 0 0;
}

.display-title__line { display: block; }
.display-title__line--accent { color: var(--cyan); }
.display-title__line--goal { color: var(--goal); }

.lede {
  font-size: clamp(17px, 1.6vw, 19px);
  line-height: 1.8;
  max-width: 68ch;
  color: var(--fog);
  margin-top: 20px;
}

.zone--paper .lede { color: #3C4763; }

.prose {
  font-size: 17px;
  line-height: 1.8;
  max-width: 70ch;
  color: var(--paper);
}

.prose p + p { margin-top: 1em; }

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

/* ---------- 7. 卡片与面板 ---------- */
.panel {
  position: relative;
  background: rgba(16, 26, 58, 0.86);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

.card {
  position: relative;
  display: block;
  background: rgba(16, 26, 58, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: var(--line-cyan);
  background: rgba(20, 34, 72, 0.92);
}

.layer-card {
  position: relative;
  isolation: isolate;
  background: rgba(16, 26, 58, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}

.layer-card::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  transform: translate(6px, 6px);
  background: rgba(47, 227, 214, 0.07);
  border: 1px solid rgba(47, 227, 214, 0.18);
  border-radius: var(--radius);
}

.layer-card--wine::before { background: rgba(255, 107, 61, 0.08); border-color: rgba(255, 107, 61, 0.2); }

/* ---------- 8. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fog);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.tag--cyan {
  color: var(--cyan);
  border-color: var(--line-cyan);
  background: rgba(47, 227, 214, 0.08);
}

.tag--goal {
  color: var(--goal);
  border-color: rgba(255, 107, 61, 0.5);
  background: rgba(255, 107, 61, 0.08);
}

/* ---------- 9. 数据展示 ---------- */
.metric { display: flex; flex-direction: column; gap: 6px; }

.metric__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.metric__value--cyan { color: var(--cyan); }
.metric__value--goal { color: var(--goal); }

.metric__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
}

.zone--paper .metric__value { color: var(--graphite); }
.zone--paper .metric__value--cyan { color: #0C7A72; }
.zone--paper .metric__label { color: #5A6580; }

.data-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--fog);
}

/* ---------- 10. 图片容器基础规则 ---------- */
.figure-frame {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(12, 71, 68, 0.55), rgba(51, 38, 94, 0.6)),
    var(--ink-deep);
  aspect-ratio: 16 / 9;
  min-height: 180px;
}

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

.figure-frame--wide { aspect-ratio: 21 / 9; }
.figure-frame--tall { aspect-ratio: 4 / 5; }
.figure-frame--square { aspect-ratio: 1 / 1; }

.figure-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mint);
  background: linear-gradient(0deg, rgba(11, 18, 48, 0.92), rgba(11, 18, 48, 0));
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fog);
}

.breadcrumb a { color: var(--fog); transition: color 0.18s var(--ease); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb__sep { color: rgba(154, 166, 196, 0.45); }

/* ---------- 12. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.btn--primary {
  background: var(--cyan);
  color: #052A28;
  box-shadow: 0 12px 28px -16px rgba(47, 227, 214, 0.95);
}

.btn--primary:hover { background: var(--mint); transform: translateY(-2px); }

.btn--ghost {
  border-color: rgba(47, 227, 214, 0.45);
  color: var(--mint);
}

.btn--ghost:hover {
  background: rgba(47, 227, 214, 0.1);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.btn--goal {
  border-color: rgba(255, 107, 61, 0.5);
  color: var(--goal);
}

.btn--goal:hover {
  background: rgba(255, 107, 61, 0.12);
  border-color: var(--goal);
  transform: translateY(-2px);
}

/* ---------- 13. 滚动显现 ---------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.js-reveal [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--cyan);
  color: #04211F;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 2px;
  transition: top 0.18s var(--ease);
}

.skip-link:focus { top: 16px; }

/* ---------- 15. 左侧悬浮数据条 ---------- */
.rail { display: none; }

/* ---------- 16. 页头 · 品牌说明带 ---------- */
.site-header { position: relative; z-index: 90; }

.masthead {
  background: linear-gradient(90deg, rgba(16, 26, 58, 0.96) 0%, rgba(16, 26, 58, 0.78) 55%, rgba(11, 18, 48, 0.62) 100%);
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 0.4s var(--ease);
}

.masthead.is-pulsing { border-bottom-color: var(--cyan); }

.masthead__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 10px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand__mark {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  color: var(--ink-night);
  background: linear-gradient(135deg, var(--cyan), var(--mint));
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(47, 227, 214, 0.4), 0 10px 22px -12px rgba(47, 227, 214, 0.9);
}

.brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.3; }

.brand__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.brand__line {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fog);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.livestatus {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
}

.livestatus__pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulseRing 2.6s ease-out infinite;
}

.livestatus__scope { color: var(--mint); }

.livestatus__row { display: inline-flex; align-items: center; gap: 6px; }

.livestatus__v { color: var(--cyan); font-weight: 700; letter-spacing: 0.06em; }

[data-refresh-countdown].is-imminent { color: var(--goal); }

@keyframes pulseRing {
  0% { box-shadow: 0 0 0 0 rgba(47, 227, 214, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(47, 227, 214, 0); }
  100% { box-shadow: 0 0 0 0 rgba(47, 227, 214, 0); }
}

@keyframes panelPulse {
  0% { box-shadow: 0 0 0 0 rgba(47, 227, 214, 0.4); }
  100% { box-shadow: 0 0 0 18px rgba(47, 227, 214, 0); }
}

[data-refresh-panel].is-pulsing { animation: panelPulse 0.7s ease-out; }

/* ---------- 17. 页头 · 栏目导航 ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 95;
  background: rgba(11, 18, 48, 0.94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.navbar__inner {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: stretch;
  gap: 16px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 14px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 20px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease);
}

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

.nav-list {
  display: flex;
  align-items: stretch;
  flex: 1 1 auto;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.nav-list li { display: flex; }

.nav-list a {
  position: relative;
  display: block;
  padding: 17px 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--fog);
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--ease);
}

.nav-list a:hover,
.nav-list a:focus-visible { color: var(--paper); background: rgba(47, 227, 214, 0.07); }

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after { transform: scaleX(1); }

.nav-list a[aria-current="page"] { color: var(--cyan); }

.nav-note {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(154, 166, 196, 0.75);
  white-space: nowrap;
}

.nav-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(154, 166, 196, 0.12);
}

.nav-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--goal));
  transition: width 0.12s linear;
}

/* ---------- 18. 页脚 ---------- */
.site-footer {
  position: relative;
  background:
    linear-gradient(180deg, rgba(16, 26, 58, 0.9) 0%, rgba(11, 18, 48, 1) 70%),
    var(--ink-night);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--teal-deep) 32%, var(--wine) 58%, var(--indigo) 78%, var(--goal) 100%);
}

.footer-grid {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 58px var(--gutter) 42px;
  display: grid;
  grid-template-columns: 1.6fr 0.9fr 0.95fr 0.85fr 1.5fr;
  gap: 36px 28px;
}

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

.footer-col__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-col__head::before {
  content: "";
  width: 10px;
  height: 1px;
  background: currentColor;
}

.footer-list li {
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--fog);
}

.footer-list a {
  color: var(--fog);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.footer-list a:hover { color: var(--mint); border-bottom-color: rgba(47, 227, 214, 0.5); }

.footer-list__plain { color: var(--fog); }

.footer-list__plain--key {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-all;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.footer-brand__line {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

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

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.footer-base {
  border-top: 1px solid var(--line-soft);
  background: rgba(6, 10, 26, 0.72);
}

.footer-base__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.footer-base__meta { color: rgba(154, 166, 196, 0.8); }

/* ---------- 19. 响应式 ---------- */
@media (min-width: 1400px) {
  body { --rail-w: 72px; }

  .rail {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 72px;
    z-index: 60;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    padding: 26px 0;
    background: linear-gradient(180deg, rgba(16, 26, 58, 0.97), rgba(11, 18, 48, 0.97));
    border-right: 1px solid rgba(47, 227, 214, 0.22);
  }

  .rail__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 12px rgba(47, 227, 214, 0.9);
  }

  .rail__word {
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.34em;
    text-transform: uppercase;
    color: var(--fog);
  }

  .rail__spark {
    width: 1px;
    height: 46px;
    background: linear-gradient(180deg, var(--cyan), rgba(47, 227, 214, 0));
  }

  .rail__time {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.06em;
    color: var(--cyan);
    writing-mode: vertical-rl;
  }
}

@media (max-width: 1180px) {
  .nav-note { display: none; }
}

@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
}

@media (max-width: 980px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  body { font-size: 16px; }

  .masthead__inner { padding: 9px 18px; gap: 14px; }
  .brand__line { display: none; }
  .brand__mark { flex-basis: 32px; width: 32px; height: 32px; font-size: 14px; }

  .livestatus { font-size: 10px; letter-spacing: 0.08em; gap: 6px 12px; }

  .navbar__inner { padding: 0 18px; flex-wrap: wrap; }
  .nav-toggle { display: flex; }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 6px 0 14px;
    background: rgba(9, 15, 40, 0.99);
    border-bottom: 1px solid var(--line-cyan);
    box-shadow: 0 28px 46px -22px rgba(0, 0, 0, 0.9);
  }

  .navbar[data-open="true"] .nav-list { display: flex; }

  .nav-list li { display: block; }

  .nav-list a { padding: 14px 18px; font-size: 15px; }

  .nav-list a::after {
    left: 18px;
    right: auto;
    width: 16px;
    bottom: 8px;
  }

  .nav-list a:hover { background: rgba(47, 227, 214, 0.06); }

  .nav-progress { position: static; margin: 0 18px 0; }

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .footer-grid { padding: 44px 18px 32px; gap: 30px 22px; }
  .footer-base__inner { padding: 16px 18px; }
}

@media (max-width: 720px) {
  .livestatus__scope { display: none; }
}

@media (max-width: 560px) {
  :root { --gutter: 18px; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-brand__desc { max-width: none; }
  .display-title { font-size: clamp(34px, 11vw, 56px); }
  .btn { width: 100%; }
  .footer-actions { flex-direction: column; }
}

@media (max-width: 420px) {
  .livestatus__k { display: none; }
}

/* ---------- 20. 动效降级 ---------- */
@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;
  }

  .js-reveal [data-reveal] { opacity: 1 !important; transform: none !important; }
  .card:hover, .btn:hover { transform: none; }
}