/* =========================================================
   盈嘉体育 / site.css
   共享样式系统：reset · 变量 · 排版 · 头部 · 页脚 · 组件
   ======================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: #F5F5F5;
  background-color: #0B1A0B;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: break-word;
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Oswald', 'Noto Sans SC', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: #F5F5F5;
}

p {
  margin-bottom: 1em;
}

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

a:hover {
  color: #FF6D00;
}

ul,
ol {
  list-style: none;
}

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

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

::selection {
  background: #FF6D00;
  color: #0B1A0B;
}

:focus-visible {
  outline: 2px solid #FF6D00;
  outline-offset: 3px;
}

/* ---------- 2. CSS Variables ---------- */
:root {
  --color-green: #1B5E20;
  --color-orange: #FF6D00;
  --color-gold: #FFD700;
  --color-blue: #0D47A1;
  --color-dark: #0B1A0B;
  --color-text: #F5F5F5;
  --color-muted: #BDBDBD;
  --color-success: #4CAF50;
  --color-glass: #121212CC;

  --font-heading: 'Oswald', 'Noto Sans SC', sans-serif;
  --font-data: 'Roboto Mono', 'Noto Sans SC', monospace;
  --font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;

  --header-height: 76px;
  --container: 1280px;
  --gutter: 24px;
  --radius: 0px;
  --transition: 0.3s ease;
}

/* ---------- 3. Layout & Utilities ---------- */
.container {
  width: min(calc(100% - var(--gutter) * 2), var(--container));
  margin-inline: auto;
}

.page-body {
  padding-top: calc(var(--header-height) + 40px);
}

.section {
  padding: 72px 0;
}

.section--alt {
  background: linear-gradient(180deg, #0B1A0B 0%, #0E2310 100%);
  border-top: 1px solid rgba(27, 94, 32, 0.5);
  border-bottom: 1px solid rgba(27, 94, 32, 0.5);
}

.grid-overlay {
  background-image:
    linear-gradient(to right, rgba(27, 94, 32, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 94, 32, 0.16) 1px, transparent 1px);
  background-size: 64px 64px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 12px 20px;
  background: #FF6D00;
  color: #0B1A0B;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  border-radius: var(--radius);
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 16px;
  color: #0B1A0B;
  outline: none;
}

/* ---------- 4. Section Index / Title ---------- */
.section-index {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: #FF6D00;
  text-transform: uppercase;
}

.section-index::before {
  content: '';
  width: 24px;
  height: 2px;
  background: #FF6D00;
}

.section-title {
  margin: 8px 0 12px;
  font-family: var(--font-heading);
  font-size: clamp(32px, 5.5vw, 58px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #F5F5F5;
}

.section-caption {
  max-width: 720px;
  color: #BDBDBD;
  font-size: 15px;
  line-height: 1.9;
}

/* ---------- 5. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 16px 0;
  font-family: var(--font-data);
  font-size: 13px;
  color: #BDBDBD;
}

.breadcrumb a {
  color: #BDBDBD;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #FF6D00;
}

.breadcrumb__sep {
  color: rgba(255, 255, 255, 0.24);
}

.breadcrumb [aria-current="page"] {
  color: #F5F5F5;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: #F5F5F5;
  cursor: pointer;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.15s ease;
}

.btn:active {
  transform: translateY(2px);
}

.btn--accent {
  background: #FF6D00;
  border-color: #FF6D00;
  color: #0B1A0B;
}

.btn--accent:hover {
  background: #FF8A00;
  border-color: #FF8A00;
  color: #0B1A0B;
}

.btn--outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
  color: #F5F5F5;
}

.btn--outline:hover {
  border-color: #FF6D00;
  color: #FF6D00;
  background: rgba(255, 109, 0, 0.06);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
}

/* ---------- 7. Grids ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ---------- 8. Tags ---------- */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #BDBDBD;
  background: transparent;
}

.tag--gold {
  border-color: rgba(255, 215, 0, 0.5);
  color: #FFD700;
}

.tag--accent {
  border-color: #FF6D00;
  color: #FF6D00;
  background: rgba(255, 109, 0, 0.08);
}

/* ---------- 9. Cards ---------- */
.card {
  background: rgba(27, 94, 32, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px;
  border-radius: var(--radius);
}

.data-card {
  position: relative;
  background: linear-gradient(145deg, rgba(13, 71, 161, 0.95) 0%, rgba(13, 71, 161, 0.72) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px;
  overflow: hidden;
  border-radius: var(--radius);
}

.data-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: #FF6D00;
}

.data-card::after {
  content: '✛';
  position: absolute;
  right: 10px;
  bottom: 4px;
  font-size: 16px;
  color: rgba(255, 215, 0, 0.28);
  font-family: var(--font-data);
}

.data-card__label {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #BDBDBD;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.data-card__value {
  font-family: var(--font-data);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: #F5F5F5;
  line-height: 1.2;
}

/* ---------- 10. Match Card ---------- */
.match-card {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: rgba(13, 71, 161, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid #FF6D00;
  border-radius: var(--radius);
}

.match-card__team {
  font-weight: 600;
  font-size: 15px;
  text-align: right;
}

.match-card__team + .match-card__team {
  text-align: left;
}

.match-card__score {
  font-family: var(--font-data);
  font-size: 28px;
  font-weight: 700;
  color: #FF6D00;
  padding: 2px 14px;
  background: rgba(11, 26, 11, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

/* ---------- 11. Data Table ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 13px;
  background: rgba(13, 71, 161, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.data-table th {
  font-weight: 500;
  text-align: left;
  padding: 12px 16px;
  background: rgba(27, 94, 32, 0.6);
  color: #FFD700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.data-table tbody tr:hover {
  background: rgba(255, 109, 0, 0.08);
}

/* ---------- 12. Media Frame ---------- */
.media-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(11, 26, 11, 0.55) 0%, transparent 60%),
    linear-gradient(315deg, #0D47A1 0%, #0B1A0B 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  border-radius: var(--radius);
}

.media-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(120deg, transparent 38%, rgba(255, 109, 0, 0.12) 42%, transparent 62%),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.03) 0 2px, transparent 2px 10px);
  pointer-events: none;
}

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

.media-frame--square {
  aspect-ratio: 1 / 1;
}

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

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

/* ---------- 13. Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(11, 26, 11, 0.92) 0%, rgba(11, 26, 11, 0.55) 100%);
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.site-header.is-solid {
  background: rgba(27, 94, 32, 0.96);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(8px);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 20px;
  width: min(calc(100% - var(--gutter) * 2), var(--container));
  margin-inline: auto;
  position: relative;
  height: 100%;
}

/* ---------- 14. Brand ---------- */
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.site-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: #FF6D00;
  color: #0B1A0B;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  font-style: italic;
  letter-spacing: 0.04em;
  line-height: 1;
  transform: skewX(-6deg);
  border-radius: var(--radius);
}

.site-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.site-brand__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #F5F5F5;
}

.site-brand__tag {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: #FFD700;
  text-transform: uppercase;
}

/* ---------- 15. Navigation ---------- */
.site-nav {
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item {
  display: block;
}

.site-nav__link {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #F5F5F5;
  position: relative;
  transition: color 0.2s ease;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: #FF6D00;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav__link:hover {
  color: #FF6D00;
}

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

.site-nav__link[aria-current="page"] {
  color: #FF6D00;
}

/* ---------- 16. Live Badge ---------- */
.site-header__live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: #FFD700;
  border: 1px solid rgba(255, 215, 0, 0.35);
  padding: 4px 10px;
  text-transform: uppercase;
  line-height: 1;
}

.live-dot {
  width: 6px;
  height: 6px;
  background: #FF6D00;
  border-radius: 50%;
  animation: live-blink 1.2s ease-in-out infinite;
}

@keyframes live-blink {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

/* ---------- 17. Nav Toggle ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #F5F5F5;
  flex-shrink: 0;
  border-radius: var(--radius);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover {
  border-color: #FF6D00;
  background: rgba(255, 109, 0, 0.06);
}

.nav-toggle__bar {
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle__label {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  text-transform: uppercase;
  line-height: 1;
  margin-top: 2px;
}

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

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

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

/* ---------- 18. Scroll Progress ---------- */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #FF6D00 0%, #FFD700 100%);
  z-index: 10;
  pointer-events: none;
}

/* ---------- 19. Footer ---------- */
.site-footer {
  background: linear-gradient(180deg, #0B1A0B 0%, #061006 100%);
  border-top: 1px solid rgba(27, 94, 32, 0.5);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #FF6D00 0%, rgba(255, 109, 0, 0) 65%);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 48px;
  padding: 56px 0 40px;
}

.site-footer__block {
  min-width: 0;
}

.site-footer__heading {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #F5F5F5;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer__index {
  font-family: var(--font-data);
  font-size: 11px;
  color: #FF6D00;
}

.site-footer__note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: #BDBDBD;
  max-width: 480px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.footer-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  font-size: 14px;
  color: #BDBDBD;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-nav__link::before {
  content: '→';
  font-family: var(--font-data);
  color: #FF6D00;
  font-size: 13px;
  transition: transform 0.2s ease;
}

.footer-nav__link:hover {
  color: #FF6D00;
  border-color: rgba(255, 109, 0, 0.35);
}

.footer-nav__link:hover::before {
  transform: translateX(3px);
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
}

.site-footer__contact li {
  display: flex;
  gap: 8px;
  padding: 7px 0;
  font-size: 14px;
  line-height: 1.6;
  color: #BDBDBD;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}

.site-footer__contact li::before {
  content: '◆';
  color: #FF6D00;
  font-size: 10px;
  transform: rotate(45deg);
  align-self: center;
  flex-shrink: 0;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  width: min(calc(100% - var(--gutter) * 2), var(--container));
  margin-inline: auto;
  padding: 18px 0 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-data);
  font-size: 12px;
  color: #BDBDBD;
}

.site-footer__coords {
  font-family: var(--font-data);
  letter-spacing: 0.14em;
  color: rgba(255, 215, 0, 0.55);
}

/* ---------- 20. Top Button ---------- */
.top-button {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  background: #FF6D00;
  border: 1px solid #FF6D00;
  color: #0B1A0B;
  font-size: 18px;
  font-weight: 700;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.2s ease;
  border-radius: var(--radius);
}

.top-button.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.top-button:hover {
  background: #FFD700;
  border-color: #FFD700;
  color: #0B1A0B;
}

.top-button__icon {
  line-height: 1;
}

/* ---------- 21. Responsive ---------- */
@media (max-width: 960px) {
  :root {
    --gutter: 20px;
  }

  .site-header__live {
    display: none;
  }

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

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    z-index: 1200;
    margin-left: 0;
    background: #1B5E20;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.4);
    transform: translateY(105%);
    transition: transform 0.3s ease;
    padding-bottom: env(safe-area-inset-bottom);
  }

  .site-nav[data-open] {
    transform: translateY(0);
  }

  .site-nav__list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .site-nav__link {
    padding: 14px 8px;
    text-align: center;
    font-size: 13px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(255, 109, 0, 0.15);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }

  .site-footer__block--brand {
    grid-column: 1 / -1;
  }

  .site-footer__bottom {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 48px 0;
  }

  .site-header__bar {
    gap: 12px;
  }

  .site-brand__mark {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }

  .site-brand__name {
    font-size: 17px;
  }

  .site-brand__tag {
    font-size: 10px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 32px;
  }

  .site-footer__block--brand {
    grid-column: auto;
  }

  .top-button {
    right: 16px;
    bottom: 16px;
    width: 40px;
    height: 40px;
  }
}

/* ---------- 22. Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .live-dot {
    animation: none;
  }

  .site-nav {
    transition: none;
  }

  .site-header {
    transition: none;
  }

  .nav-toggle__bar {
    transition: none;
  }

  .top-button {
    transition: none;
  }
}