/* ==========================================================
   乐动体育入口 · /assets/site.css
   共享外壳：reset、变量、中文排版、头部、页脚、通用组件
   ========================================================== */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, figure, 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;
  background: none;
  border: 0;
}

button { cursor: pointer; }

a { color: var(--c-green); text-decoration: none; }

/* ---------- 2. Tokens ---------- */
:root {
  --c-base: #F4F7F3;
  --c-paper: #FFFFFF;
  --c-mist: #DCE8E1;
  --c-green: #0E6B4F;
  --c-green-soft: rgba(14, 107, 79, .12);
  --c-deep: #08372A;
  --c-sky: #2E7FA8;
  --c-orange: #F26A21;
  --c-orange-ink: #B8430C;
  --c-ink: #17211D;
  --c-stone: #6C7A72;
  --c-line: #C9D6CE;

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

  --shell: 1280px;
  --gap: 20px;
  --section-y: 96px;
  --radius: 14px;
  --ease: cubic-bezier(.2, .7, .3, 1);

  --shadow-1: 0 1px 2px rgba(8, 55, 42, .06);
  --shadow-2: 0 8px 24px rgba(8, 55, 42, .10);
  --shadow-3: 0 12px 32px rgba(8, 55, 42, .14);
}

/* ---------- 3. Base type ---------- */
body {
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--c-ink);
  background-color: var(--c-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.15;
  color: var(--c-deep);
}

h1 { font-size: clamp(32px, 5vw, 64px); letter-spacing: -.03em; }
h2 { font-size: clamp(24px, 3vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 28px); }
h4 { font-size: 18px; font-weight: 800; }

p { max-width: 68ch; }

strong { font-weight: 700; }

code, kbd, samp, .mono, time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

::selection {
  background: var(--c-green);
  color: #FFFFFF;
}

/* ---------- 4. Focus & a11y ---------- */
:focus-visible {
  outline: 2px solid var(--c-green);
  outline-offset: 3px;
}

.site-footer :focus-visible {
  outline-color: #7FD3B0;
}

.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 200;
  padding: 12px 20px;
  border-radius: 0 0 14px 14px;
  background: var(--c-deep);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  transition: top .18s var(--ease);
}

.skip-link:focus {
  top: 0;
}

/* ---------- 5. Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding-block: var(--section-y);
}

.section--band {
  background: var(--c-mist);
}

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 20px 28px;
  align-items: start;
  margin-bottom: 40px;
}

.section-num {
  font-family: var(--font-mono);
  font-size: clamp(48px, 7vw, 96px);
  line-height: .88;
  font-weight: 700;
  letter-spacing: -.05em;
  font-variant-numeric: tabular-nums;
  color: var(--c-green-soft);
  user-select: none;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 40px);
  letter-spacing: -.02em;
  line-height: 1.15;
  color: var(--c-deep);
}

.section-note {
  margin-top: 12px;
  max-width: 62ch;
  font-size: 15px;
  color: var(--c-stone);
}

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

.grid {
  display: grid;
  gap: var(--gap);
}

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

.prose {
  max-width: 66ch;
  font-size: 16.5px;
  line-height: 1.75;
}

.prose p + p { margin-top: 16px; }
.prose h2 { margin-top: 40px; font-size: 26px; }
.prose h3 { margin-top: 28px; font-size: 20px; }
.prose ul { margin-top: 16px; }
.prose li {
  position: relative;
  padding-left: 20px;
  margin-top: 8px;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-green-soft);
}

.measure { max-width: 64ch; }

/* ---------- 6. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 24px 24px 0;
  transition: padding .22s var(--ease);
}

.site-header[data-scrolled="true"] {
  padding-top: 8px;
}

.header-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 品牌岛 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 6px 16px 6px 6px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-1);
  color: var(--c-ink);
  transition: box-shadow .2s var(--ease), background-color .2s var(--ease);
}

.brand:hover { background: #FFFFFF; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--c-green);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}

.brand-text { display: block; }

.brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.15;
  color: var(--c-deep);
}

.brand-line {
  display: block;
  font-size: 11px;
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--c-stone);
}

/* 栏目岛 */
.primary-nav {
  margin-left: auto;
  padding: 6px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(8px);
}

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

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--c-ink);
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.nav-link:hover { background: var(--c-mist); color: var(--c-deep); }

.nav-link[aria-current="page"] {
  background: var(--c-mist);
  color: var(--c-deep);
  font-weight: 800;
}

.nav-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-orange);
  transform: translateX(-50%);
}

/* 工具岛 */
.header-utility {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  padding: 6px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-1);
}

.util-btn,
.util-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-ink);
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.util-btn:hover,
.util-link:hover { background: var(--c-mist); color: var(--c-deep); }

.util-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--c-green);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: background-color .18s var(--ease), transform .18s var(--ease);
}

.util-cta:hover { background: var(--c-deep); }
.util-cta:active { transform: translateY(1px); }

.util-glyph {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  color: currentColor;
}

.util-glyph--search {
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.util-glyph--search::after {
  content: "";
  position: absolute;
  right: -3px;
  bottom: -2px;
  width: 5px;
  height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
  transform-origin: left center;
}

.util-glyph--save {
  height: 13px;
}

.util-glyph--save::before {
  content: "";
  position: absolute;
  inset: 0;
  background: currentColor;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 74%, 0 100%);
}

/* 菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow-1);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-deep);
}

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: background-color .18s var(--ease);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform .2s var(--ease);
}

.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-5px) rotate(-45deg); }

/* 检索面板 */
.header-search {
  width: 100%;
  max-width: var(--shell);
  margin: 12px auto 0;
  padding: 18px 20px 20px;
  border: 1px solid var(--c-line);
  border-radius: 20px;
  background: var(--c-paper);
  box-shadow: var(--shadow-2);
}

.header-search[hidden] { display: none; }

.search-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-sky);
  margin-bottom: 14px;
}

.search-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.search-item {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-base);
  color: var(--c-ink);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.search-item:hover {
  border-color: var(--c-green);
  background: var(--c-paper);
}

.search-item-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--c-sky);
}

.search-item-title {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--c-deep);
}

.search-item-note {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--c-stone);
}

/* 滚动收缩态 */
.site-header[data-scrolled="true"] .brand,
.site-header[data-scrolled="true"] .primary-nav,
.site-header[data-scrolled="true"] .header-utility,
.site-header[data-scrolled="true"] .nav-toggle {
  background: #FFFFFF;
  box-shadow: 0 6px 18px rgba(8, 55, 42, .12);
}

/* ---------- 7. Footer ---------- */
.site-footer {
  margin-top: 96px;
  padding: 72px 0 32px;
  background: var(--c-deep);
  color: #DDE8E2;
  border-top: 1px solid rgba(255, 255, 255, .08);
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}

.footer-brand-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: #FFFFFF;
}

.footer-tagline {
  margin-top: 12px;
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.7;
  color: #9FB8AE;
}

.footer-search-label {
  display: block;
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: #7FD3B0;
}

.footer-search-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.footer-search-list a {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  font-size: 13px;
  color: #DDE8E2;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.footer-search-list a:hover {
  border-color: var(--c-orange);
  color: #FFFFFF;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #7FD3B0;
  margin-bottom: 14px;
}

.footer-list li + li { margin-top: 10px; }

.footer-list a {
  font-size: 14px;
  color: #C8D8D0;
  transition: color .18s var(--ease);
}

.footer-list a:hover { color: #FFFFFF; }

.footer-contact {
  display: grid;
  gap: 4px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 13.5px;
  color: #9FB8AE;
}

.footer-contact p { max-width: none; }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  margin-top: 24px;
  font-size: 12.5px;
  color: #8AA79B;
}

.footer-copy { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.footer-icp { font-family: var(--font-mono); color: #C8D8D0; }

.footer-legal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-left: auto;
}

.footer-legal-list a {
  color: #C8D8D0;
  transition: color .18s var(--ease);
}

.footer-legal-list a:hover { color: #FFFFFF; }

/* ---------- 8. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.01em;
  white-space: nowrap;
  transition: background-color .18s var(--ease),
              border-color .18s var(--ease),
              color .18s var(--ease),
              transform .18s var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--c-green);
  color: #FFFFFF;
}

.btn--primary:hover { background: var(--c-deep); }

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

.btn--ghost:hover {
  border-color: var(--c-green);
  background: var(--c-paper);
}

.btn--accent {
  background: var(--c-orange);
  color: var(--c-deep);
  font-weight: 800;
}

.btn--accent:hover { background: #D95A16; }

/* ---------- 9. Cards & tags ---------- */
.card {
  display: block;
  padding: 20px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-paper);
  box-shadow: var(--shadow-1);
  color: var(--c-ink);
  transition: transform .18s var(--ease),
              border-color .18s var(--ease),
              box-shadow .18s var(--ease);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(14, 107, 79, .4);
  box-shadow: var(--shadow-2);
}

.card-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--c-sky);
}

.card-title {
  display: block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--c-deep);
}

.card-text {
  display: block;
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--c-stone);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--c-mist);
  color: var(--c-green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .01em;
  white-space: nowrap;
}

.tag--orange {
  background: rgba(242, 106, 33, .12);
  color: var(--c-orange-ink);
}

.tag--sky {
  background: rgba(46, 127, 168, .12);
  color: var(--c-sky);
}

/* ---------- 10. Breadcrumb ---------- */
.breadcrumb {
  font-size: 13px;
  color: var(--c-stone);
}

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

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

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

.breadcrumb a {
  color: var(--c-sky);
}

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

/* ---------- 11. Media containers ---------- */
.media {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-mist);
  box-shadow: var(--shadow-1);
}

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

.media--wide { aspect-ratio: 16 / 7; }
.media--card { aspect-ratio: 4 / 3; }
.media--square { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

/* ---------- 12. Motion ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}

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

[data-panel] {
  overflow: hidden;
  transition: height .22s var(--ease);
}

[data-panel][hidden] { display: none; }

/* ---------- 13. Responsive ---------- */
@media (max-width: 1100px) {
  .nav-link { padding: 8px 10px; font-size: 13.5px; }
  .brand-line { display: none; }
}

@media (max-width: 900px) {
  :root {
    --section-y: 56px;
  }

  .site-header { padding: 12px 16px 0; }
  .site-header[data-scrolled="true"] { padding-top: 4px; }

  .header-shell {
    flex-wrap: nowrap;
    align-items: center;
    gap: 8px;
    padding: 0;
  }

  .brand { order: 1; padding: 5px 12px 5px 5px; }
  .brand-mark { width: 30px; height: 30px; font-size: 11px; }
  .brand-name { font-size: 14px; }

  .header-utility {
    order: 2;
    margin-left: auto;
    padding: 0;
    border: 0;
    background: none;
    box-shadow: none;
  }

  .header-utility .util-btn,
  .header-utility .util-link { display: none; }

  .util-cta { padding: 9px 14px; font-size: 12.5px; }

  .nav-toggle {
    display: inline-flex;
    order: 3;
  }

  .primary-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 100%;
    margin: 6px 0 0;
    padding: 10px;
    border-radius: 20px;
    background: var(--c-paper);
    box-shadow: var(--shadow-3);
    display: none;
  }

  .primary-nav[data-open="true"] { display: block; }

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

  .nav-link {
    display: block;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 15px;
  }

  .nav-link[aria-current="page"]::before {
    left: auto;
    right: 16px;
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
  }

  .header-search { margin-top: 10px; padding: 14px; border-radius: 18px; }
  .search-grid { grid-template-columns: 1fr; }

  .container { padding: 0 16px; }

  .section-head { grid-template-columns: 1fr; gap: 8px; }
  .section-num { font-size: clamp(44px, 12vw, 64px); }

  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 28px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 16px;
  }

  .site-footer { padding-top: 48px; margin-top: 56px; }
  .footer-legal-list { margin-left: 0; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  .footer-nav { grid-template-columns: 1fr; }
  .footer-contact { font-size: 13px; }
  .btn { width: 100%; }
}

/* ---------- 14. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

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

  .card:hover { transform: none; }
}