:root {
  --container-width: 1120px;
  --container-padding: clamp(1.25rem, 4vw, 2rem);
  --border-thick: 3px;
  --shadow-hard: 8px 8px 0 rgba(10,14,39,0.12);
  --font-display: "Archivo Black", "Noto Sans SC Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, "BlinkMacSystemFont", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "SF Mono", "Consolas", "Liberation Mono", monospace;
  --color-navy: #0a0e27;
  --color-navy-deep: #101a3a;
  --color-orange: #ff7a1a;
  --color-purple: #8a2be2;
  --color-white: #ffffff;
  --color-mist: #b8c0d9;
  --color-steel: #2c3e50;
  --color-red: #e74c3c;
  --gradient-blue-purple: linear-gradient(135deg, #0a0e27 0%, #8a2be2 100%);
  --gradient-orange-purple: linear-gradient(135deg, #ff7a1a 0%, #8a2be2 100%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--color-steel);
  background: var(--color-white);
}

#main-content {
  flex: 1;
  width: 100%;
}

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

a {
  color: var(--color-navy);
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--color-purple);
}

:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 1001;
  background: var(--color-orange);
  color: #fff;
  padding: 0.75rem 1.25rem;
  font-weight: 700;
  border-radius: 0 0 4px 0;
}

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

.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: var(--gradient-orange-purple);
  z-index: 1000;
  pointer-events: none;
}

.site-header {
  background: linear-gradient(135deg, #0a0e27 0%, #101a3a 45%, #1d1145 100%);
  color: var(--color-white);
  position: relative;
  border-bottom: var(--border-thick) solid var(--color-orange);
  box-shadow: 0 6px 24px rgba(10,14,39,0.35);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 15% 10%, rgba(138,43,226,0.28), transparent 45%), radial-gradient(circle at 85% 10%, rgba(255,122,26,0.18), transparent 40%);
}

.site-header__inner {
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 1rem var(--container-padding) 0;
  position: relative;
  z-index: 1;
}

.site-header__masthead {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
}

.site-header__meta {
  flex: 0 0 auto;
  max-width: 8rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.4;
  letter-spacing: 0.1em;
  color: var(--color-mist);
  text-transform: uppercase;
}

.site-header__meta--left {
  border-left: 2px solid var(--color-purple);
  padding-left: 0.5rem;
}

.site-header__meta--right {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  max-height: 6rem;
  overflow: hidden;
  border-right: 2px solid var(--color-orange);
  padding-right: 0.25rem;
  font-size: 0.65rem;
  color: var(--color-orange);
  opacity: 0.9;
}

.site-header__brand {
  display: block;
  margin-inline: auto;
  flex: 1 1 auto;
  text-align: center;
  color: var(--color-white);
}

.site-header__brand:hover {
  color: var(--color-white);
}

.site-header__brand-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  line-height: 0.9;
  letter-spacing: 0.04em;
  text-shadow: 0 4px 14px rgba(138,43,226,0.45);
}

.site-header__brand-tagline {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-mist);
  margin-top: 0.5rem;
  white-space: nowrap;
}

.site-nav {
  border-top: 1px solid rgba(255,255,255,0.18);
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 3.25rem;
}

.site-nav__toggle {
  display: none;
  appearance: none;
  background: transparent;
  border: 2px solid var(--color-orange);
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  border-radius: 2px;
  transition: border-color 0.2s, background 0.2s;
}

.site-nav__toggle:hover {
  background: rgba(255,122,26,0.15);
}

.site-nav__toggle-box {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--color-orange);
  margin-left: 0.5rem;
  box-shadow: 2px 2px 0 var(--color-purple);
}

.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-box {
  background: var(--color-purple);
  box-shadow: 2px 2px 0 var(--color-orange);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem;
}

.site-nav__item {
  list-style: none;
}

.site-nav__link {
  display: block;
  padding: 0.6rem 1rem;
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  border: 2px solid transparent;
  position: relative;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--color-orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s;
}

.site-nav__link:hover {
  color: var(--color-orange);
}

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

.site-nav__link[aria-current="page"] {
  color: var(--color-orange);
}

.site-footer {
  background: linear-gradient(135deg, #0a0e27 0%, #101a3a 80%);
  color: var(--color-white);
  border-top: var(--border-thick) solid var(--color-purple);
  margin-top: auto;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 10% 20%, rgba(138,43,226,0.2), transparent 40%);
}

.site-footer__inner {
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 2.5rem var(--container-padding) 1rem;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: start;
  position: relative;
  z-index: 1;
}

.site-footer__brand {
  max-width: 24rem;
}

.site-footer__logo {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 1;
}

.site-footer__slogan {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-orange);
  letter-spacing: 0.05em;
  margin-top: 0.5rem;
}

.site-footer__desc {
  font-size: 0.85rem;
  color: var(--color-mist);
  line-height: 1.7;
  margin-top: 0.75rem;
}

.site-footer__contact,
.site-footer__links {
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.site-footer__heading {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-orange);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  padding-bottom: 0.5rem;
  margin-bottom: 0.75rem;
}

.site-footer__list {
  display: grid;
  gap: 0.4rem;
  list-style: none;
}

.site-footer__list a {
  color: var(--color-white);
  text-decoration: none;
  font-size: 0.9rem;
}

.site-footer__list a:hover {
  color: var(--color-purple);
}

.site-footer__list li {
  color: var(--color-mist);
  font-size: 0.9rem;
}

.site-footer__bottom {
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 1rem var(--container-padding) 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.15);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-mist);
  position: relative;
  z-index: 1;
}

.site-footer__bottom p {
  margin: 0;
}

.container {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.section--tight {
  padding-block: 1.5rem;
}

.section__header {
  margin-bottom: 2rem;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--color-purple);
  text-transform: uppercase;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.1;
  color: var(--color-navy);
  margin-top: 0.25rem;
}

.section__intro {
  margin-top: 0.75rem;
  max-width: 60ch;
  color: var(--color-steel);
}

.breadcrumbs {
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 0.75rem var(--container-padding);
  font-size: 0.85rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-purple);
}

.breadcrumbs a {
  color: var(--color-navy);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-orange);
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-steel);
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: var(--border-thick) solid var(--color-navy);
  background: var(--color-white);
  color: var(--color-navy);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 5px 5px 0 rgba(10,14,39,0.2);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(138,43,226,0.3);
  color: var(--color-navy);
}

.btn--primary {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
  box-shadow: 5px 5px 0 var(--color-orange);
}

.btn--primary:hover {
  background: var(--color-navy-deep);
  color: var(--color-white);
  box-shadow: 8px 8px 0 var(--color-purple);
}

.btn--secondary {
  background: var(--color-orange);
  color: var(--color-navy);
  border-color: var(--color-orange);
}

.btn--secondary:hover {
  background: var(--color-white);
  color: var(--color-navy);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--color-mist);
  background: transparent;
  color: var(--color-steel);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.filter-btn:hover {
  border-color: var(--color-orange);
}

.filter-btn[data-active] {
  border-color: var(--color-orange);
  background: var(--color-orange);
  color: var(--color-white);
}

.filter-btn:focus-visible {
  outline: 3px solid var(--color-purple);
  outline-offset: 2px;
}

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(12, 1fr);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid--split {
  grid-template-columns: 1fr 1.2fr;
}

.card {
  background: var(--color-white);
  border: var(--border-thick) solid var(--color-navy);
  box-shadow: var(--shadow-hard);
  padding: 1.5rem;
}

.card--dark {
  background: var(--color-navy-deep);
  color: var(--color-white);
  border-color: var(--color-purple);
}

.card--accent {
  border-color: var(--color-orange);
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
  color: var(--color-navy);
}

.card--dark .card__title {
  color: var(--color-white);
}

.card__text {
  font-size: 0.9rem;
}

.image-frame {
  background: linear-gradient(135deg, var(--color-navy-deep), var(--color-steel));
  border: var(--border-thick) solid var(--color-navy);
  box-shadow: var(--shadow-hard);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-mist);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: center;
  padding: 1rem;
  position: relative;
  overflow: hidden;
}

.image-frame::after {
  content: "FB体育综合战报";
}

.image-frame--16\/9 {
  aspect-ratio: 16 / 9;
}

.image-frame--4\/3 {
  aspect-ratio: 4 / 3;
}

@media (max-width: 768px) {
  .site-header__masthead {
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    padding-bottom: 0.75rem;
  }

  .site-header__meta--left {
    order: 2;
    flex-basis: 100%;
    max-width: none;
    border-left: none;
    border-top: 1px solid rgba(255,255,255,0.2);
    padding: 0.25rem 0.5rem;
    text-align: center;
  }

  .site-header__meta--right {
    display: none;
  }

  .site-header__brand {
    order: 1;
    flex-basis: 100%;
  }

  .site-header__brand-name {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .site-header__brand-tagline {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
  }

  .site-header__inner {
    padding-top: 0.75rem;
  }

  .site-nav {
    border-top: none;
    justify-content: center;
    min-height: 0;
    padding-block: 0.5rem;
  }

  html.js .site-nav__toggle {
    display: inline-flex;
    align-items: center;
  }

  html.js .site-nav__list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    text-align: center;
    padding: 0.5rem 0 1rem;
  }

  .site-nav[data-open] .site-nav__list {
    display: flex;
  }

  .site-nav__link {
    border: none;
    font-size: 1rem;
    padding: 0.8rem 1rem;
  }

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

  .grid--split {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: 0.35rem;
  }
}

@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;
  }
}