/* ============ LM体育官方共享样式 /assets/site.css ============ */

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--lm-ink);
  background-color: var(--lm-off-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 .75em;
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.3;
  color: var(--lm-ink);
}
h1 { font-size: 2.5rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.3rem; font-weight: 700; }
h4, h5, h6 { font-weight: 700; }

p { margin: 0 0 1.25rem; }
a { color: var(--lm-blue); text-decoration-thickness: .08em; text-underline-offset: .12em; }
a:hover { color: var(--lm-orange); }
img { max-width: 100%; height: auto; display: block; }
button { font: inherit; }
ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }
[hidden] { display: none !important; }
::selection { background: var(--lm-yellow); color: var(--lm-ink); }

/* ---------- Variables ---------- */
:root {
  --lm-blue: #0A2342;
  --lm-orange: #F77F00;
  --lm-yellow: #FFD60A;
  --lm-ink: #111111;
  --lm-white: #FFFFFF;
  --lm-off-white: #F8F8F8;
  --lm-warm-gray: #D3D3D3;
  --lm-dark-gray: #333333;
  --lm-gray: #E5E5E5;

  --font-heading: "Noto Serif SC", "Source Han Serif CN", "Songti SC", "SimSun", serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "Oswald", "Arial Narrow", "DIN Condensed", sans-serif;

  --container: 1200px;
  --container-narrow: 860px;
  --gutter: 1.5rem;
  --radius: 2px;
  --shadow-1: 0 1px 3px rgba(10, 35, 66, .08);
  --shadow-2: 0 12px 24px -12px rgba(10, 35, 66, .25);
  --transition: .18s ease;
}

/* ---------- Focus & Accessibility ---------- */
:focus-visible { outline: 3px solid var(--lm-yellow); outline-offset: 2px; }
.skip-link {
  position: fixed;
  top: -120px;
  left: .5rem;
  z-index: 100;
  padding: .75rem 1.25rem;
  background: var(--lm-yellow);
  color: var(--lm-ink);
  font-weight: 800;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-2);
  transition: top var(--transition);
}
.skip-link:focus { top: .5rem; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .header-progress span { transition: none; }
}

/* ---------- Layout Utilities ---------- */
.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.container-narrow { width: min(100% - 2.5rem, var(--container-narrow)); margin-inline: auto; }
.page-section { padding: 4.5rem 0; position: relative; }
.section-head { margin-bottom: 2.25rem; max-width: 54rem; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin: 0;
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lm-orange);
}
.section-label::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  background: var(--lm-orange);
}
.section-title { margin: .5rem 0 .35rem; font-size: 1.8rem; }
.section-desc { margin: 0; color: var(--lm-dark-gray); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.25rem;
  background: var(--lm-blue);
  color: var(--lm-white);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .92rem;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid var(--lm-blue);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn:hover {
  background: var(--lm-orange);
  border-color: var(--lm-orange);
  color: var(--lm-white);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--lm-orange); border-color: var(--lm-orange); }
.btn-primary:hover { background: #e46f00; border-color: #e46f00; }
.btn-outline { background: transparent; color: var(--lm-blue); }
.btn-outline:hover { background: var(--lm-gray); color: var(--lm-ink); border-color: var(--lm-gray); }
.btn-ghost { background: transparent; color: var(--lm-blue); border-color: transparent; }
.btn-ghost:hover { background: var(--lm-gray); color: var(--lm-ink); border-color: transparent; }

/* ---------- Filter ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 1.75rem; }
.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .45rem .95rem;
  background: var(--lm-white);
  border: 1px solid var(--lm-warm-gray);
  border-radius: var(--radius);
  color: var(--lm-ink);
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 600;
  line-height: 1.3;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover { border-color: var(--lm-orange); color: var(--lm-orange); }
.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--lm-blue);
  border-color: var(--lm-blue);
  color: var(--lm-white);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-block;
  padding: .2rem .6rem;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--lm-blue);
}
.tag-orange { color: #fff; background: var(--lm-orange); border-color: var(--lm-orange); }
.tag-blue { color: #fff; background: var(--lm-blue); border-color: var(--lm-blue); }
.tag-yellow { color: var(--lm-ink); background: var(--lm-yellow); border-color: var(--lm-yellow); }

/* ---------- Data Display ---------- */
.data-num {
  font-family: var(--font-data);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: .01em;
  font-variant-numeric: tabular-nums;
  color: var(--lm-blue);
}
.data-num--orange { color: var(--lm-orange); }
.data-num--yellow { color: var(--lm-yellow); }

/* ---------- Cards ---------- */
.card {
  background: var(--lm-white);
  border: 1px solid var(--lm-gray);
  box-shadow: var(--shadow-1);
}
.card-pad { padding: 1.5rem; }

/* ---------- Media Frames ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--lm-gray);
  border: 1px solid var(--lm-warm-gray);
}
.media-frame::before { content: ""; display: block; }
.media-frame > img,
.media-frame > picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame-16-9::before { padding-top: 56.25%; }
.media-frame-3-2::before { padding-top: 66.66%; }
.media-frame-4-3::before { padding-top: 75%; }
.media-frame-4-5::before { padding-top: 125%; }

/* ---------- Grid ---------- */
.grid { display: grid; gap: var(--gutter); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { margin: 0 0 1.75rem; font-size: .9rem; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: var(--lm-dark-gray);
}
.breadcrumb-item + .breadcrumb-item::before { content: "/"; color: var(--lm-warm-gray); }
.breadcrumb-link { color: var(--lm-blue); text-decoration: none; }
.breadcrumb-link:hover { color: var(--lm-orange); text-decoration: underline; }
.breadcrumb-current { color: var(--lm-ink); font-weight: 700; }

/* ---------- Dividers ---------- */
.divider-thick { border: 0; border-top: 6px solid var(--lm-blue); margin: 3rem 0; }
.divider-print { border: 0; border-top: 3px double var(--lm-ink); margin: 2.5rem 0; position: relative; }
.divider-print::after {
  content: "";
  display: block;
  border-top: 1px solid var(--lm-warm-gray);
  margin-top: 4px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--lm-white);
  box-shadow: 0 1px 0 var(--lm-gray), 0 8px 24px -16px rgba(10, 35, 66, .16);
}
.site-header::after {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--lm-blue) 0 42%, var(--lm-orange) 42% 68%, var(--lm-yellow) 68% 100%);
}
.header-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 5;
  pointer-events: none;
}
.header-progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--lm-orange), var(--lm-yellow));
  box-shadow: 0 0 8px rgba(247, 127, 0, .5);
  transition: width .05s linear;
}
.header-top { background: var(--lm-blue); color: rgba(255, 255, 255, .72); }
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: .4rem;
  padding-bottom: .4rem;
}
.header-tagline { margin: 0; font-size: .78rem; letter-spacing: .05em; }
.header-note {
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lm-yellow);
  white-space: nowrap;
}
.header-main { background: var(--lm-white); }
.header-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding-top: .7rem;
  padding-bottom: .7rem;
}

/* ---------- Brand ---------- */
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; flex-shrink: 0; }
.brand-mark {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--lm-blue);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: background var(--transition);
}
.brand-mark::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--lm-orange) 0 62%, var(--lm-yellow) 62% 100%);
}
.brand:hover .brand-mark { background: var(--lm-orange); }
.brand:hover .brand-mark::after { background: linear-gradient(90deg, var(--lm-yellow) 0 62%, var(--lm-blue) 62% 100%); }
.brand-letters {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1;
  color: #fff;
  letter-spacing: .03em;
  padding-bottom: 2px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-title { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 900; color: var(--lm-ink); letter-spacing: .04em; }
.brand-sub { font-family: var(--font-body); font-size: .66rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--lm-orange); }

/* ---------- Nav Toggle ---------- */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem .9rem;
  background: var(--lm-blue);
  color: #fff;
  border: 1px solid var(--lm-blue);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: .88rem;
  font-weight: 700;
  line-height: 1;
  transition: background var(--transition), border-color var(--transition);
}
.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] { background: var(--lm-orange); border-color: var(--lm-orange); }
.nav-toggle-box { position: relative; display: block; width: 16px; height: 12px; }
.nav-toggle-box::before,
.nav-toggle-box::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition), box-shadow var(--transition);
}
.nav-toggle-box::before { top: 0; box-shadow: 0 5px 0 currentColor; }
.nav-toggle-box::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box::before { transform: translateY(5px) rotate(45deg); box-shadow: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box::after { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle-label { letter-spacing: .06em; }

/* ---------- Nav ---------- */
.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-link {
  display: inline-flex;
  align-items: baseline;
  padding: .55rem .65rem;
  font-size: .92rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--lm-ink);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.nav-link-index {
  font-family: var(--font-data);
  font-size: .72rem;
  font-weight: 600;
  color: var(--lm-orange);
  margin-right: .32rem;
  letter-spacing: .04em;
}
.nav-link:hover { color: var(--lm-orange); border-bottom-color: var(--lm-orange); }
.nav-link[aria-current="page"] { color: var(--lm-blue); border-bottom-color: var(--lm-blue); }

/* ---------- Header / Nav Responsive ---------- */
@media (min-width: 721px) {
  .nav-toggle { display: none; }
  .site-nav { display: block; }
}

@media (max-width: 720px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--lm-blue);
    border-top: 1px solid rgba(255, 255, 255, .12);
    box-shadow: var(--shadow-2);
  }
  .site-nav[data-open] { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; padding: .5rem 0; }
  .nav-link {
    display: flex;
    align-items: baseline;
    padding: .9rem 1.25rem;
    color: rgba(255, 255, 255, .9);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    border-left: 3px solid transparent;
  }
  .nav-link-index { color: var(--lm-yellow); }
  .nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, .06);
    border-left-color: var(--lm-orange);
    border-bottom-color: rgba(255, 255, 255, .08);
  }
  .nav-link[aria-current="page"] { color: var(--lm-yellow); border-left-color: var(--lm-yellow); }
}

@media (max-width: 640px) {
  .header-note { display: none; }
  .header-top-inner { justify-content: center; text-align: center; }
  .header-tagline { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .header-main-inner { gap: .6rem; }
}

@media (max-width: 420px) {
  .brand-sub { display: none; }
  .brand-title { font-size: 1.05rem; }
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  margin-top: 5rem;
  background: var(--lm-blue);
  color: rgba(255, 255, 255, .8);
  font-size: .95rem;
}
.footer-decor {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(105deg, var(--lm-orange) 0 38%, var(--lm-yellow) 38% 55%, var(--lm-blue) 55% 100%);
  pointer-events: none;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.25fr;
  gap: 2.25rem;
  padding-top: 3.25rem;
  padding-bottom: 2.75rem;
}
.footer-col { padding-left: 1.1rem; border-left: 1px solid rgba(255, 255, 255, .12); }
.footer-col-brand { padding-left: 0; border-left: 0; }
.footer-brand {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1.2;
  color: #fff;
  text-decoration: none;
  border-bottom: 3px solid var(--lm-orange);
  padding-bottom: .25rem;
}
.footer-brand:hover { color: var(--lm-yellow); border-bottom-color: var(--lm-yellow); }
.footer-about { margin: 1rem 0 .8rem; color: rgba(255, 255, 255, .72); max-width: 30ch; }
.footer-note {
  margin: 0;
  font-size: .82rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, .5);
  border-left: 2px solid var(--lm-orange);
  padding-left: .7rem;
  max-width: 38ch;
}
.footer-heading {
  margin: 0 0 .9rem;
  font-family: var(--font-body);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lm-yellow);
}
.footer-heading::after {
  content: "";
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--lm-orange);
  margin-top: .35rem;
}
.footer-links li + li { margin-top: .25rem; }
.footer-links a {
  display: inline-block;
  padding: .25rem 0;
  color: rgba(255, 255, 255, .78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.footer-links a:hover { color: var(--lm-orange); border-bottom-color: var(--lm-orange); }
.footer-address { font-style: normal; line-height: 1.95; color: rgba(255, 255, 255, .7); }
.footer-address span { display: block; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .14); font-size: .82rem; color: rgba(255, 255, 255, .5); }
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 2rem;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

/* ---------- Footer Responsive ---------- */
@media (max-width: 960px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-col { padding-left: 0; border-left: 0; }
}

@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; padding-top: 2.5rem; padding-bottom: 2rem; }
  .footer-bottom-inner { flex-direction: column; gap: .4rem; }
}

/* ---------- Global Responsive ---------- */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  .page-section { padding: 3rem 0; }
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
}