/* ============================================================
   乐鱼体育视频 · 共享 site.css
   ============================================================ */

:root {
  --color-deep-space: #0D0F14;
  --color-carbon: #17191F;
  --color-off-white: #F5F1E8;
  --color-signal-red: #E62B1E;
  --color-crimson: #A11410;
  --color-gold: #E3B341;
  --color-ash: #9AA0AC;
  --color-line: #2C303A;
  --color-focus-ring: #4DA3FF;

  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-headline: "Noto Sans SC", "HarmonyOS Sans SC", "PingFang SC", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --container-max: 1280px;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.45);
  --shadow-raised: 0 12px 32px rgba(0, 0, 0, 0.45);
  --z-header: 100;
  --z-skip: 999;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--color-off-white);
  background: var(--color-deep-space);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--color-signal-red);
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-headline);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-off-white);
}

:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

/* ---------- Layout helpers ---------- */
.container {
  width: min(var(--container-max), 100%);
  margin-inline: auto;
  padding-inline: 24px;
}

#main-content {
  display: block;
  scroll-margin-top: 84px;
}

/* ---------- Accessibility ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: var(--z-skip);
  padding: 10px 18px;
  background: var(--color-off-white);
  color: var(--color-deep-space);
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 300ms;
}

.skip-link:focus {
  top: 16px;
}

/* ---------- Buttons & text links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  text-decoration: none;
  transition: background-color 300ms, border-color 300ms, color 300ms;
}

.btn--primary {
  background: var(--color-signal-red);
  border-color: var(--color-signal-red);
  color: var(--color-off-white);
}

.btn--primary:hover {
  background: var(--color-crimson);
  border-color: var(--color-crimson);
  color: var(--color-off-white);
}

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

.btn--ghost:hover {
  border-color: var(--color-signal-red);
  color: var(--color-signal-red);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 4px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gold);
  text-decoration: none;
}

.btn-link::after {
  content: "→";
  font-family: var(--font-mono);
  transition: transform 300ms;
}

.btn-link:hover {
  color: var(--color-signal-red);
}

.btn-link:hover::after {
  transform: translateX(3px);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(13, 15, 20, 0.95);
  border-bottom: 1px solid var(--color-line);
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1;
  background: rgba(230, 43, 30, 0.35);
}

.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--color-signal-red) 0%, var(--color-gold) 100%);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 76px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand__mark {
  position: relative;
  display: block;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--color-signal-red) 0%, var(--color-crimson) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}

.brand__mark::after {
  content: "";
  position: absolute;
  right: 5px;
  bottom: 5px;
  width: 8px;
  height: 8px;
  background: var(--color-gold);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand__name {
  display: block;
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--color-off-white);
}

.brand__tagline {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--color-ash);
  white-space: nowrap;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--color-gold);
  white-space: nowrap;
}

.header-status__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-signal-red);
  box-shadow: 0 0 0 4px rgba(230, 43, 30, 0.15);
}

.header-status__text {
  display: inline-block;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  transition: border-color 300ms;
}

.nav-toggle:hover {
  border-color: var(--color-signal-red);
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 1px;
  background: var(--color-off-white);
  transition: transform 300ms, opacity 300ms;
}

.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);
}

.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  opacity: 0;
  background: var(--color-deep-space);
  border-bottom: 1px solid var(--color-line);
  transition: max-height 400ms ease, opacity 300ms ease, visibility 300ms ease;
}

.site-nav[data-open] {
  max-height: 480px;
  visibility: visible;
  opacity: 1;
}

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

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

.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ash);
  text-decoration: none;
  border-bottom: 1px solid var(--color-line);
  transition: color 300ms, background-color 300ms;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-off-white);
  background: rgba(230, 43, 30, 0.06);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--color-gold);
}

.site-nav__label {
  display: block;
}

@media (max-width: 1023px) {
  .site-nav__link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-signal-red);
  }
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background-color: var(--color-deep-space);
  border-top: 1px solid var(--color-line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 33.333%;
  max-width: 480px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-signal-red) 0%, var(--color-crimson) 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.2fr;
  gap: 48px;
  padding: 48px 0 32px;
  align-items: start;
}

.footer-block {
  position: relative;
  padding-top: 14px;
}

.footer-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--color-signal-red);
}

.footer-label {
  display: block;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(227, 179, 65, 0.35);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--color-gold);
}

.footer-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-ash);
  margin-bottom: 10px;
}

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

.footer-brand__mark {
  display: block;
  width: 30px;
  height: 30px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--color-signal-red), var(--color-crimson));
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}

.footer-brand__text {
  display: flex;
  flex-direction: column;
}

.footer-brand__name {
  font-family: var(--font-headline);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--color-off-white);
}

.footer-brand__tagline {
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--color-ash);
}

.footer-brand__note {
  max-width: 280px;
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-ash);
}

.footer-trust {
  margin: 8px 0 28px;
  padding-left: 16px;
  border-left: 2px solid var(--color-gold);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-ash);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding: 18px 0 24px;
  border-top: 1px solid var(--color-line);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 28px;
}

.footer-legal__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ash);
  text-decoration: none;
}

.footer-legal__link:hover {
  color: var(--color-off-white);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--color-ash);
}

/* ---------- Section head ---------- */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 16px;
  padding-bottom: 14px;
  margin-bottom: 28px;
  border-bottom: 1px solid rgba(227, 179, 65, 0.35);
}

.section-head__index {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--color-gold);
}

.section-head__title {
  font-family: var(--font-headline);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--color-off-white);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  margin-bottom: 24px;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-ash);
}

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

.breadcrumb__link {
  color: var(--color-ash);
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: var(--color-signal-red);
}

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

/* ---------- Index label ---------- */
.index-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--color-gold);
}

/* ---------- Bento grid ---------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  grid-column: span 4;
  min-height: 180px;
  padding: 24px;
  overflow: hidden;
  background: var(--color-carbon);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.bento-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--color-signal-red);
  transform: scaleY(0.4);
  transform-origin: bottom;
  opacity: 0;
  transition: transform 300ms, opacity 300ms;
}

.bento-card:hover::before,
.bento-card:focus-within::before {
  transform: scaleY(1);
  opacity: 1;
}

.bento-card--wide {
  grid-column: span 8;
}

.bento-card--narrow {
  grid-column: span 3;
}

.bento-card__tag {
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 12px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  border: 1px solid var(--color-line);
  border-radius: 999px;
}

.bento-card__title {
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 900;
  color: var(--color-off-white);
  margin-bottom: 8px;
}

.bento-card__meta {
  font-size: 13px;
  color: var(--color-ash);
}

.bento-card__link {
  display: inline-block;
  margin-top: auto;
  padding-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-signal-red);
  text-decoration: none;
}

.bento-card__link::after {
  content: "→";
  margin-left: 4px;
  font-family: var(--font-mono);
}

.bento-card__link:hover {
  color: var(--color-crimson);
}

/* ---------- Media frames ---------- */
.figure {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(230, 43, 30, 0.14), transparent 45%),
    var(--color-carbon);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(230, 43, 30, 0.18), transparent 32%);
  opacity: 0;
  transition: opacity 300ms;
  pointer-events: none;
}

.figure:hover::after {
  opacity: 1;
}

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

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

.figure--tall {
  aspect-ratio: 4 / 5;
}

.figure--square {
  aspect-ratio: 1 / 1;
}

/* ---------- Divider & content container ---------- */
.divider-line {
  height: 1px;
  border: 0;
  margin: 36px 0;
  background: linear-gradient(90deg, var(--color-signal-red) 0%, var(--color-line) 55%, transparent 100%);
}

.content-container {
  max-width: 720px;
  margin-inline: auto;
  padding: 48px 24px 64px;
}

.content-container p {
  margin-bottom: 1.2em;
}

/* ---------- Stat blocks ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.stat-block {
  padding: 18px;
  background: var(--color-carbon);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.stat-block__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-off-white);
}

.stat-block__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-ash);
}

.stat-block--accent .stat-block__value {
  color: var(--color-signal-red);
}

/* ---------- Reveal protocol ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 400ms ease, transform 400ms ease;
}

html.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (min-width: 1024px) {
  .site-header {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .site-header__inner {
    gap: 24px;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    max-height: none;
    overflow: visible;
    visibility: visible;
    opacity: 1;
    margin-left: auto;
    background: transparent;
    border-bottom: 0;
    transition: none;
  }

  .site-nav[data-open] {
    max-height: none;
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    padding: 4px;
    background: var(--color-carbon);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
  }

  .site-nav__item {
    position: relative;
  }

  .site-nav__link {
    gap: 7px;
    min-height: 44px;
    padding: 8px 12px;
    font-size: 13px;
    border-bottom: 0;
    border-radius: var(--radius-sm);
  }

  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 4px;
    height: 2px;
    background: var(--color-signal-red);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 300ms;
  }

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

@media (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .bento-card,
  .bento-card--wide,
  .bento-card--narrow {
    grid-column: span 6;
  }
}

@media (max-width: 639px) {
  .container {
    padding-inline: 16px;
  }

  .site-header__inner {
    min-height: 64px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .header-status {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: auto;
  }

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

  .bento-card,
  .bento-card--wide,
  .bento-card--narrow {
    grid-column: span 12;
  }
}

@media (max-width: 379px) {
  .brand__tagline {
    display: none;
  }
}

/* ---------- 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;
    transition-delay: 0ms !important;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-nav,
  .nav-toggle__bar,
  .scroll-progress__bar {
    transition: none !important;
  }
}