/* =========================================================
   site.css — 多宝体育主站 共享层
   夜墨绿看台 + 荧光青数据终端
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
  --ink: #05100D;
  --ink-2: #0B211B;
  --line: #12332A;
  --cyan: #43F5C8;
  --cyan-dim: #19C8A0;
  --amber: #FFB020;
  --cobalt: #2D5BFF;
  --cream: #EFE7D8;
  --paper: #F2EDE3;
  --mist: #9FB3AC;
  --espresso: #1A1613;

  --fs-11: 0.6875rem;
  --fs-13: 0.8125rem;
  --fs-16: 1rem;
  --fs-20: 1.25rem;
  --fs-28: 1.75rem;
  --fs-40: 2.5rem;
  --fs-64: 4rem;
  --fs-96: 6rem;

  --font-display: "Barlow Condensed", "Oswald", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --gutter: clamp(16px, 4vw, 40px);
  --container: 1240px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 620px at 78% -12%, rgba(67, 245, 200, 0.10), transparent 62%),
    radial-gradient(900px 520px at 6% 108%, rgba(45, 91, 255, 0.09), transparent 60%),
    var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 24px 球场网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(67, 245, 200, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(67, 245, 200, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.6;
}

main {
  display: block;
  position: relative;
  z-index: 1;
}

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

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

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

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

button {
  font: inherit;
  color: inherit;
  margin: 0;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--cyan);
  color: var(--ink);
}

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.4rem, 5.2vw, 4.6rem); line-height: 0.98; }
h2 { font-size: clamp(var(--fs-28), 3.4vw, var(--fs-40)); }
h3 { font-size: var(--fs-20); line-height: 1.24; }
h4 { font-size: var(--fs-16); line-height: 1.34; letter-spacing: 0; }

p {
  max-width: 68ch;
}

/* ---------- 4. 焦点与可达性 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-180%);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink);
  font-size: var(--fs-13);
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: transform 0.18s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  outline-color: var(--paper);
}

/* ---------- 5. 版式工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: 40px;
}

.section--wide {
  background: var(--cream);
  color: var(--espresso);
  border-radius: var(--radius-lg);
  padding-block: 64px;
}

.section--wide .eyebrow { color: var(--cobalt); }
.section--wide .eyebrow::before { background: var(--cobalt); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

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

.grid--rail > .rail-side { grid-column: 1 / span 3; }
.grid--rail > .rail-main { grid-column: 4 / span 9; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--cyan);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(11, 33, 27, 0.7);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.tag--cyan { color: var(--cyan); border-color: rgba(67, 245, 200, 0.42); }
.tag--amber { color: var(--amber); border-color: rgba(255, 176, 32, 0.42); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: var(--fs-13);
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn--primary {
  background: var(--cyan);
  color: var(--ink);
  border-color: var(--cyan);
}

.btn--primary:hover {
  background: var(--cyan-dim);
  border-color: var(--cyan-dim);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--cyan);
  border-color: rgba(67, 245, 200, 0.45);
}

.btn--ghost:hover {
  background: rgba(67, 245, 200, 0.12);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  padding-block: 16px;
  font-size: var(--fs-11);
  letter-spacing: 0.12em;
  color: var(--mist);
}

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

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

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

.breadcrumb-list a {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  color: var(--mist);
  transition: color 0.16s var(--ease);
}

.breadcrumb-list a:hover { color: var(--cyan); }

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

/* ---------- 8. 卡片 / 数据 ---------- */
.panel {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  color: var(--amber);
}

.num--xl {
  font-size: var(--fs-64);
  line-height: 1;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.score-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}

.score-bar::-webkit-scrollbar { display: none; }

.score-bar-label {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.score-bar-team {
  flex: none;
  font-size: var(--fs-13);
  color: var(--paper);
  white-space: nowrap;
}

.score-bar-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--amber);
}

.score-bar-divider {
  flex: none;
  width: 1px;
  height: 20px;
  background: var(--cyan);
  opacity: 0.5;
}

/* ---------- 9. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.06) brightness(0.86);
  transition: filter 0.24s var(--ease), transform 0.24s var(--ease);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(67, 245, 200, 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(67, 245, 200, 0.14) 1px, transparent 1px);
  background-size: 48px 48px;
  mix-blend-mode: screen;
  opacity: 0.45;
}

.media-frame:hover img {
  filter: saturate(0.8) contrast(1.1) brightness(0.95);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

/* ---------- 10. 显现协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

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

/* =========================================================
   11. 头部
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 12px var(--gutter) 10px;
  background: rgba(5, 16, 13, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: padding 0.2s var(--ease), border-color 0.2s var(--ease);
}

.site-header.is-condensed {
  padding-top: 6px;
  padding-bottom: 6px;
  border-bottom-color: var(--line);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  min-height: 56px;
  padding: 6px 8px 6px 18px;
  border-radius: 999px;
  border: 1px solid rgba(67, 245, 200, 0.18);
  background: rgba(11, 33, 27, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: min-height 0.2s var(--ease), background 0.2s var(--ease);
}

.site-header.is-condensed .header-inner {
  min-height: 44px;
  background: rgba(11, 33, 27, 0.96);
}

/* --- 品牌 --- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  min-height: 44px;
  flex: none;
}

.brand-mark {
  width: 22px;
  height: 22px;
  flex: none;
  background: linear-gradient(150deg, var(--cyan), var(--cyan-dim));
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
  box-shadow: 0 0 18px rgba(67, 245, 200, 0.35);
  transition: box-shadow 0.2s var(--ease);
}

.brand:hover .brand-mark {
  box-shadow: 0 0 26px rgba(67, 245, 200, 0.6);
}

.brand-text {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--paper);
}

.brand-suffix {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.2em;
  color: var(--cyan);
}

/* --- 主导航 --- */
.site-nav {
  display: block;
  flex: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item { display: block; }

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--mist);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: color 0.16s var(--ease), background 0.16s var(--ease);
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(67, 245, 200, 0.10);
}

.nav-link[aria-current="page"] {
  background: var(--cobalt);
  color: #FFFFFF;
  box-shadow: 0 8px 20px rgba(45, 91, 255, 0.32);
}

.nav-link[aria-current="page"]:hover {
  background: #3F6BFF;
  color: #FFFFFF;
}

/* --- 移动导航按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  flex: none;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(67, 245, 200, 0.28);
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  transition: border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--cyan);
  background: rgba(67, 245, 200, 0.10);
}

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 4px;
  width: 16px;
}

.nav-toggle-bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-toggle-text {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
}

/* --- 检索面板 --- */
.search-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  z-index: 90;
  width: min(420px, calc(100vw - 2 * var(--gutter)));
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(67, 245, 200, 0.24);
  background: rgba(11, 33, 27, 0.99);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.52);
  animation: panel-in 0.18s var(--ease);
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

.search-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
  color: var(--mist);
}

.search-input {
  display: block;
  width: 100%;
  margin-top: 8px;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(5, 16, 13, 0.85);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-16);
  transition: border-color 0.16s var(--ease);
}

.search-input::placeholder { color: #5F7A72; }

.search-input:focus {
  border-color: var(--cyan);
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
}

.search-results {
  display: grid;
  gap: 2px;
  margin-top: 12px;
  max-height: min(320px, 50vh);
  overflow-y: auto;
}

.search-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 10px;
  border-radius: 10px;
  transition: background 0.16s var(--ease);
}

.search-result:hover {
  background: rgba(67, 245, 200, 0.08);
}

.search-link {
  display: flex;
  align-items: center;
  flex: 1;
  min-height: 40px;
  font-size: var(--fs-13);
  color: var(--paper);
  transition: color 0.16s var(--ease);
}

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

.search-meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.search-empty {
  margin-top: 12px;
  font-size: var(--fs-13);
  color: var(--mist);
}

/* --- 赛事分类赛道 --- */
.sport-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-top: 10px;
  max-height: 64px;
  overflow: hidden;
  transition: max-height 0.24s var(--ease), opacity 0.18s var(--ease),
              padding 0.24s var(--ease);
}

.site-header.is-condensed .sport-strip {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
}

.sport-scroll {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  -webkit-mask-image: linear-gradient(to right, #000 90%, transparent 100%);
  mask-image: linear-gradient(to right, #000 90%, transparent 100%);
}

.sport-scroll::-webkit-scrollbar { display: none; }

.sport-list {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 4px 2px 2px;
}

.sport-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(11, 33, 27, 0.62);
  color: var(--mist);
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
  white-space: nowrap;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease),
              background 0.16s var(--ease);
}

.sport-chip:hover {
  color: var(--cyan);
  border-color: rgba(67, 245, 200, 0.5);
  background: rgba(67, 245, 200, 0.10);
}

.search-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  min-height: 34px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(67, 245, 200, 0.4);
  background: rgba(67, 245, 200, 0.08);
  color: var(--cyan);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease),
              color 0.16s var(--ease);
}

.search-toggle:hover {
  background: rgba(67, 245, 200, 0.18);
  border-color: var(--cyan);
}

.search-toggle[aria-expanded="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.search-toggle-icon {
  position: relative;
  display: inline-block;
  width: 11px;
  height: 11px;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.search-toggle-icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -3px;
  width: 6px;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transform: rotate(45deg);
}

.search-toggle-text {
  font-size: var(--fs-11);
  letter-spacing: 0.16em;
}

/* =========================================================
   12. 页脚
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 64px;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 0.9fr 1.3fr;
  gap: 40px 32px;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: 56px var(--gutter) 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.brand--footer {
  margin-right: 0;
  min-height: 0;
}

.footer-tagline {
  max-width: 30ch;
  font-size: var(--fs-13);
  line-height: 1.72;
  color: var(--mist);
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.12em;
  color: #6E8A81;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  line-height: 1.4;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-list li { min-width: 0; }

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  font-size: var(--fs-13);
  color: var(--mist);
  transition: color 0.16s var(--ease);
}

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

.footer-link--legal {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.12em;
  min-height: 24px;
}

.footer-service {
  display: inline-block;
  font-size: var(--fs-13);
  color: var(--mist);
  line-height: 1.64;
}

.footer-contact {
  display: inline-block;
  font-size: var(--fs-13);
  line-height: 1.64;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: 16px var(--gutter) 28px;
  border-top: 1px solid var(--line);
}

.footer-copy,
.footer-note {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.1em;
  color: #6E8A81;
  max-width: none;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
}

/* =========================================================
   13. 响应式
   ========================================================= */
@media (max-width: 1080px) {
  .grid--rail > .rail-side { grid-column: 1 / span 4; }
  .grid--rail > .rail-main { grid-column: 5 / span 8; }
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: nowrap;
    padding: 6px 6px 6px 14px;
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    z-index: 80;
    padding: 10px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(67, 245, 200, 0.22);
    background: rgba(11, 33, 27, 0.99);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.48);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease),
                visibility 0.18s var(--ease);
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    justify-content: flex-start;
    width: 100%;
    min-height: 46px;
    padding: 0 16px;
    border-radius: var(--radius-sm);
    font-size: var(--fs-16);
    letter-spacing: 0.02em;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
    padding-top: 40px;
  }

  .grid--rail > .rail-side,
  .grid--rail > .rail-main { grid-column: 1 / -1; }

  .section--wide {
    border-radius: var(--radius-md);
    padding-block: 40px;
  }
}

@media (max-width: 620px) {
  body { font-size: 15px; }

  .brand-name { font-size: var(--fs-16); }
  .brand-suffix { display: none; }

  .sport-strip { gap: 8px; }

  .search-toggle {
    padding: 0 12px;
  }

  .search-toggle-text { display: none; }

  .search-panel {
    width: calc(100vw - 2 * var(--gutter));
    right: calc(-1 * (var(--gutter) - 8px));
  }

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

  .footer-base {
    flex-direction: column;
    align-items: flex-start;
  }

  .num--xl { font-size: var(--fs-40); }

  .media-frame { border-radius: var(--radius-md); }
}

@media (max-width: 400px) {
  .nav-toggle-text { display: none; }
}

/* =========================================================
   14. 降低动效
   ========================================================= */
@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;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .btn:hover,
  .media-frame:hover img {
    transform: none;
  }
}