/* ============================================================
   德赢体育安装 · 共享样式 /assets/site.css
   墨绿底 + 信号青绿 + 琥珀节点；报头式页头与刻度页脚
   ============================================================ */

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

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

body { margin: 0; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }

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

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

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

a { color: inherit; }

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

::selection {
  background: var(--signal);
  color: #04120D;
}

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #06110E;
  --ink-800: #0C1F1A;
  --line: #17362E;
  --paper: #EAF2ED;
  --muted: #93A9A0;
  --signal: #00E5A3;
  --signal-deep: #0F9C74;
  --amber: #F2A03D;
  --violet: #8B7CFF;
  --paper-inv: #EEF1EA;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-cond: "Barlow Condensed", "Oswald", "Arial Narrow", var(--font-sans);
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wrap: 1200px;
  --gutter: clamp(18px, 4vw, 44px);
  --r-lg: 28px;
  --r-md: 18px;
  --r-pill: 999px;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.85;
  font-weight: 400;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 80% at 50% -20%, rgba(0, 229, 163, .07), transparent 60%),
    radial-gradient(90% 60% at 100% 100%, rgba(139, 124, 255, .05), transparent 65%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--signal);
  text-decoration: none;
  transition: color .16s var(--ease);
}

a:hover { text-decoration: underline; text-underline-offset: 3px; }

p { max-width: 62ch; }

.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}

.display {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 4.4vw, 54px);
  line-height: 1.15;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 30ch;
}

.lede {
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.8;
  color: #C3D3CB;
  max-width: 62ch;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--signal);
  flex: 0 0 auto;
}

.meta {
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.7;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

.section { padding-block: clamp(40px, 6vw, 88px); }
.section--tight { padding-block: clamp(24px, 3.4vw, 48px); }

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1.55fr) minmax(0, 320px); }

.rail {
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(12, 31, 26, .55);
}

.rule {
  border: 0;
  height: 1px;
  background: var(--line);
  margin-block: clamp(20px, 3vw, 34px);
}

/* ---------- 5. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1.2;
  text-decoration: none;
  transition: background .16s var(--ease), color .16s var(--ease),
              border-color .16s var(--ease), transform .16s var(--ease);
}

.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: #04120D;
}

.btn--signal:hover {
  background: var(--signal-deep);
  border-color: var(--signal-deep);
  color: #04120D;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--paper);
}

.btn--ghost:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: rgba(12, 31, 26, .6);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--muted);
}

.chip--signal { color: var(--signal); border-color: rgba(0, 229, 163, .42); }
.chip--amber { color: var(--amber); border-color: rgba(242, 160, 61, .42); }
.chip--violet { color: var(--violet); border-color: rgba(139, 124, 255, .42); }

.card {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  padding: clamp(18px, 2.4vw, 26px);
  transition: border-color .16s var(--ease), transform .16s var(--ease), background .16s var(--ease);
}

.card:hover {
  border-color: var(--signal-deep);
  transform: translateY(-2px);
}

.board {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(20px, 3.2vw, 36px);
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(0, 229, 163, .10), transparent 58%),
    var(--ink-800);
}

.board::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 42%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal), transparent);
  opacity: .55;
  animation: board-scan 5s linear infinite;
}

@keyframes board-scan {
  0% { transform: translateX(-60%); }
  100% { transform: translateX(240%); }
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.stat-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.stat-value--amber { color: var(--amber); }

.stat-label {
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}

.plate {
  border-radius: var(--r-lg);
  background: var(--paper-inv);
  color: var(--ink-800);
  padding: clamp(20px, 3.4vw, 42px);
}

.plate .eyebrow,
.plate .meta,
.plate .stat-label { color: #4C655C; }

.plate .stat-value { color: var(--ink-800); }
.plate .stat { border-top-color: rgba(12, 31, 26, .18); }
.plate .rule { background: rgba(12, 31, 26, .16); }
.plate a { color: #0B6E52; }

/* 面包屑 */
.breadcrumbs {
  border-bottom: 1px solid var(--line);
  padding-block: 14px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.breadcrumb-link {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb-link:hover {
  color: var(--signal);
  text-decoration: underline;
}

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

/* 图片容器基础规则（页面阶段放 <img>，无图时自显刻度网格） */
.figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 110% at 18% 0%, rgba(0, 229, 163, .10), transparent 62%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.figure-media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 0;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(0deg, rgba(23, 54, 46, .8) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(90deg, rgba(23, 54, 46, .8) 0 1px, transparent 1px 34px);
}

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

.figure-cap {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.7;
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 20;
  color: var(--paper);
  background:
    radial-gradient(140% 90% at 50% -30%, rgba(0, 229, 163, .10), transparent 62%),
    var(--ink-900);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -120px;
  z-index: 90;
  transform: translateX(-50%);
  padding: 10px 22px;
  border-radius: 0 0 var(--r-pill) var(--r-pill);
  background: var(--signal);
  color: #04120D;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: top .16s var(--ease);
}

.skip-link:focus { top: 0; text-decoration: none; }

.scroll-meter {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  background: rgba(23, 54, 46, .7);
  z-index: 70;
  pointer-events: none;
}

.scroll-meter-bar {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--signal-deep), var(--signal));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .1s linear;
}

/* 状态刻度栏 */
.header-rail {
  background: var(--ink-800);
  border-bottom: 1px solid var(--line);
}

.header-rail-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 8px;
}

.header-rail-note {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  line-height: 1.7;
  max-width: none;
}

.header-rail-note--mono {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .06em;
}

/* 报头行 */
.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  padding-block: 22px 18px;
  border-bottom: 1px solid var(--line);
}

.masthead-lead {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.masthead-mark {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(0, 229, 163, .14);
}

.masthead-note {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  line-height: 1.6;
  max-width: none;
}

.masthead-brand {
  justify-self: center;
  text-align: center;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.1;
  letter-spacing: .06em;
  color: var(--paper);
  text-decoration: none;
  padding-block: 4px;
  transition: color .16s var(--ease);
}

.masthead-brand:hover { color: var(--signal); text-decoration: none; }

.masthead-side {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  min-width: 0;
}

.masthead-meta {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  line-height: 1.6;
  text-align: right;
  max-width: none;
}

.header-action {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(0, 229, 163, .45);
  background: rgba(0, 229, 163, .08);
  color: var(--signal);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  transition: background .16s var(--ease), color .16s var(--ease),
              transform .16s var(--ease), border-color .16s var(--ease);
}

.header-action:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: #04120D;
  text-decoration: none;
  transform: translateY(-2px);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: .12em;
  line-height: 1.4;
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.nav-toggle:hover { border-color: var(--signal-deep); color: var(--signal); }

.nav-toggle-bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
  height: 14px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--signal);
  transition: transform .16s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* 主导航 */
.site-nav {
  border-top: 1px solid var(--line);
  padding-block: 10px;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(6px, 1.6vw, 26px);
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 6px;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--muted);
  text-decoration: none;
  transition: color .16s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 2px;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}

.nav-link:hover { color: var(--paper); text-decoration: none; }
.nav-link:hover::after { transform: scaleX(1); }

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

/* 联赛筛选带 */
.league-strip {
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.league-strip-inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 24px);
  padding-block: 10px;
}

.league-strip-label {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
  max-width: none;
}

.league-tabs {
  display: flex;
  flex: 1 1 auto;
  gap: 8px;
  padding-block: 2px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.league-tab {
  flex: 0 0 auto;
  padding: 7px 16px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: transparent;
  font-size: 13px;
  letter-spacing: .04em;
  line-height: 1.5;
  color: var(--muted);
  transition: color .16s var(--ease), border-color .16s var(--ease),
              background .16s var(--ease);
}

.league-tab:hover { color: var(--paper); border-color: var(--signal-deep); }

.league-tab[aria-selected="true"] {
  background: var(--signal);
  border-color: var(--signal);
  color: #04120D;
  font-weight: 600;
}

.league-note {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
  line-height: 1.6;
  max-width: none;
}

.league-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 3px rgba(242, 160, 61, .18);
}

/* 右下角常驻安装入口 */
.dock-cta {
  position: fixed;
  right: clamp(14px, 3vw, 30px);
  bottom: clamp(14px, 3vw, 30px);
  z-index: 65;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(0, 229, 163, .42);
  background: rgba(12, 31, 26, .94);
  color: var(--signal);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  box-shadow: 0 18px 40px -24px rgba(0, 0, 0, .95);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .18s var(--ease), transform .18s var(--ease),
              background .16s var(--ease), color .16s var(--ease),
              visibility .18s var(--ease);
}

.dock-cta[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dock-cta:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: #04120D;
  text-decoration: none;
}

.dock-cta-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  margin-top: clamp(32px, 5vw, 72px);
  padding-top: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--line);
  color: var(--paper);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900) 78%);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.5fr);
  gap: clamp(28px, 5vw, 64px);
  padding-bottom: clamp(28px, 4vw, 46px);
}

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

.footer-scale {
  width: min(240px, 60%);
  height: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 14px);
}

.footer-brand {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.2;
  letter-spacing: .04em;
  color: var(--paper);
  max-width: none;
}

.footer-tagline {
  margin-top: 10px;
  font-size: 14px;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--muted);
  max-width: none;
}

.footer-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 22px;
}

.footer-index-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}

.footer-index-item .mono {
  font-size: 16px;
  color: var(--amber);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 34px);
}

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

.footer-col-title {
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--signal);
  line-height: 1.6;
  max-width: none;
}

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

.footer-link {
  display: inline-block;
  width: fit-content;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.footer-link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
  text-decoration: none;
}

.footer-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px 34px;
  padding-block: clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--line);
}

.footer-contact-block { min-width: 0; }

.footer-contact-line {
  font-size: 13px;
  letter-spacing: .03em;
  line-height: 1.9;
  color: var(--paper);
  max-width: none;
}

.footer-contact-line .mono {
  margin-right: 8px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.footer-contact-note {
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 58ch;
}

.footer-contact-link { margin-top: 10px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 16px 22px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.footer-copy { max-width: none; }

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.footer-legal-links .footer-link { font-size: 12px; letter-spacing: .08em; }

.footer-legal {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .04em;
  max-width: none;
}

/* ---------- 8. 响应式 ---------- */
@media (max-width: 960px) {
  .grid--split { grid-template-columns: minmax(0, 1fr); }
  .rail { padding: 18px; }
}

@media (max-width: 900px) {
  .header-rail-note--wide,
  .header-rail-note--mono { display: none; }

  .header-rail-inner { justify-content: flex-start; }

  .masthead {
    grid-template-columns: 40px minmax(0, 1fr) 40px;
    gap: 10px;
    padding-block: 16px 14px;
  }

  .masthead-note,
  .masthead-meta,
  .header-action { display: none; }

  .masthead-side { gap: 0; }

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

  .site-nav {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-block: 0;
    border-top-color: transparent;
    transition: max-height .22s var(--ease), opacity .18s var(--ease),
                padding .22s var(--ease), border-color .18s var(--ease);
  }

  .site-nav[data-open="true"] {
    max-height: 460px;
    opacity: 1;
    padding-block: 6px 14px;
    border-top-color: var(--line);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 13px 4px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
  }

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

  .nav-link[aria-current="page"] {
    color: var(--signal);
    background: rgba(0, 229, 163, .06);
  }

  .league-strip-label,
  .league-note { display: none; }

  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; line-height: 1.85; }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .dock-cta { padding: 11px 16px; font-size: 12px; }
}

/* ---------- 9. 动效降级 ---------- */
@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;
  }

  .board::after { animation: none; opacity: .25; }
  .card:hover,
  .btn:hover,
  .header-action:hover,
  .dock-cta[data-visible="true"] { transform: none; }
  .dock-cta { transform: none; }
  .scroll-meter-bar { transition: none; }
}