/* ============================================
   乐竞数据态 · 共享样式层 /assets/site.css
   数据洪流 · 目录索引 · 粗野主义
   ============================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--lc-ink);
  background: var(--lc-paper);
}
img, svg, video { max-width: 100%; display: block; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 0.5em;
  text-transform: uppercase;
}
p, ul, ol, dl, blockquote { margin: 0 0 1rem; }
a { color: var(--lc-red); }
ul { padding-left: 1.25rem; }
button { font-family: inherit; }
[hidden] { display: none !important; }

::selection { background: var(--lc-red); color: var(--lc-paper); }

:focus-visible {
  outline: 4px solid var(--lc-amber);
  outline-offset: 2px;
}

/* ---------- Design Tokens ---------- */
:root {
  --lc-red: #E63946;
  --lc-blue: #1D3557;
  --lc-green: #2A9D8F;
  --lc-paper: #F1FAEE;
  --lc-ink: #161925;
  --lc-amber: #F4A261;
  --lc-steel: #457B9D;
  --lc-teal: #264653;

  --font-heading: "Oswald", "Arial Narrow", "Noto Sans SC", sans-serif;
  --font-body: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --fs-hero: clamp(2.5rem, 6vw, 4.5rem);
  --fs-h2: clamp(1.75rem, 3.5vw, 2.75rem);
  --fs-h3: 1.25rem;
  --fs-body: clamp(0.9375rem, 1vw, 1.0625rem);
  --fs-small: 0.8125rem;
  --fs-tiny: 0.6875rem;

  --lc-border-w: 3px;
  --lc-border-w-sm: 2px;
  --lc-shadow: 8px 8px 0 var(--lc-ink);
  --lc-shadow-sm: 4px 4px 0 var(--lc-ink);
  --lc-container: min(1240px, 92vw);
  --lc-gutter: clamp(1rem, 3vw, 2rem);
  --lc-header-h: 84px;
  --lc-transition: 0.2s ease;
}

/* ---------- Layout ---------- */
.lc-container {
  width: var(--lc-container);
  margin-inline: auto;
}

.lc-section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}
.lc-section--dark {
  background: var(--lc-blue);
  color: var(--lc-paper);
}
.lc-section--ink {
  background: var(--lc-ink);
  color: var(--lc-paper);
}
.lc-section--dark .lc-lead,
.lc-section--ink .lc-lead { color: var(--lc-paper); }

.lc-grid {
  display: grid;
  gap: var(--lc-gutter);
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
}

.lc-bevel {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2rem), calc(100% - 2rem) 100%, 0 100%);
}

/* ---------- Typography Helpers ---------- */
.lc-lead {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.7;
  max-width: 65ch;
}
.lc-index-num {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  line-height: 0.9;
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  color: var(--lc-red);
}

/* ---------- Skip Link ---------- */
.skip-link {
  display: inline-block;
  position: fixed;
  top: 0.5rem;
  left: var(--lc-container);
  z-index: 200;
  transform: translateY(-220%);
  background: var(--lc-red);
  color: var(--lc-paper);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.6rem 1.25rem;
  border: 2px solid var(--lc-ink);
  transition: transform 0.2s ease;
}
.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: 90;
  background: var(--lc-green);
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--lc-blue);
  border-bottom: var(--lc-border-w) solid var(--lc-ink);
}
.header__bar {
  background: var(--lc-blue);
}
.header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lc-gutter);
  min-height: var(--lc-header-h);
  padding-block: 0.75rem;
}

/* Brand */
.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  position: relative;
  padding-left: 14px;
  line-height: 1.15;
  text-decoration: none;
  color: var(--lc-paper);
}
.brand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--lc-red);
  transform: skewX(-12deg);
}
.brand__kicker {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--lc-green);
}
.brand__name {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--lc-paper);
  transition: color 0.15s ease;
}
.brand__tagline {
  font-family: var(--font-body);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--lc-steel);
}
.brand:hover .brand__name,
.brand:focus-visible .brand__name {
  color: var(--lc-amber);
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: var(--lc-ink);
  border: 2px solid var(--lc-paper);
  color: var(--lc-paper);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  line-height: 1;
}
.nav-toggle__icon {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}
.nav-toggle__line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--lc-paper);
  transition: transform 0.25s ease;
}
.nav-toggle.is-active .nav-toggle__line:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}
.nav-toggle.is-active .nav-toggle__line:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

/* Nav */
.site-nav {
  display: block;
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list__link {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 0.85rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--lc-paper);
  border: 2px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.nav-list__num {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--lc-red);
  transition: color 0.15s ease;
}
.nav-list__label {
  white-space: nowrap;
}
.nav-list__link:hover,
.nav-list__link:focus-visible {
  border-color: var(--lc-red);
  background: var(--lc-teal);
}
.nav-list__link[aria-current="page"] {
  background: var(--lc-red);
  border-color: var(--lc-red);
  color: var(--lc-paper);
}
.nav-list__link[aria-current="page"] .nav-list__num {
  color: var(--lc-amber);
}

/* Data Ticker */
.data-ticker {
  background: var(--lc-ink);
  border-top: var(--lc-border-w-sm) solid var(--lc-red);
  overflow: hidden;
  padding-block: 0.4rem;
}
.data-ticker__inner {
  display: flex;
  width: max-content;
  animation: lc-ticker 32s linear infinite;
}
.data-ticker:hover .data-ticker__inner,
.data-ticker:focus-within .data-ticker__inner {
  animation-play-state: paused;
}
.data-ticker__item {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding-right: 3rem;
}
.data-ticker__live {
  display: inline-block;
  flex-shrink: 0;
  transform: skewX(-10deg);
  background: var(--lc-green);
  color: var(--lc-ink);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  padding: 0.15em 0.6em;
  border: 2px solid var(--lc-paper);
  animation: lc-pulse-live 1.8s ease-in-out infinite;
}
.data-ticker__text {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: rgba(241, 250, 238, 0.85);
  white-space: nowrap;
}
@keyframes lc-ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes lc-pulse-live {
  0%, 100% { background: var(--lc-green); color: var(--lc-ink); }
  50% { background: var(--lc-amber); color: var(--lc-ink); }
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 6vw, 5rem);
  background: var(--lc-ink);
  color: var(--lc-paper);
  border-top: var(--lc-border-w) solid var(--lc-red);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 8px;
  background: var(--lc-green);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-block: 3rem 2rem;
}
.footer__logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--lc-paper);
  margin: 0.25rem 0 0.1rem;
}
.footer__tagline {
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  color: var(--lc-steel);
  margin-bottom: 1rem;
}
.footer__trust {
  font-size: var(--fs-small);
  line-height: 1.8;
  color: rgba(241, 250, 238, 0.8);
  max-width: 52ch;
}
.footer__heading {
  font-size: 1rem;
  color: var(--lc-amber);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-bottom: 2px solid var(--lc-teal);
  padding-bottom: 0.4rem;
  margin-bottom: 1rem;
}
.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer__list-item {
  padding: 0.3rem 0;
  font-size: var(--fs-small);
  color: rgba(241, 250, 238, 0.85);
}
.footer__list a {
  color: var(--lc-paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.footer__list a:hover,
.footer__list a:focus-visible {
  color: var(--lc-green);
  border-bottom-color: var(--lc-green);
}
.footer__note {
  margin-top: 1rem;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--lc-steel);
}
.footer__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 2px solid var(--lc-teal);
  padding-block: 1rem;
  font-size: var(--fs-small);
  color: rgba(241, 250, 238, 0.65);
}
.footer__copyright,
.footer__icp {
  margin: 0;
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 1.75rem;
  font-size: var(--fs-small);
}
.footer__legal a {
  color: var(--lc-steel);
  text-decoration: none;
  border-bottom: 1px solid var(--lc-steel);
  transition: color 0.15s ease, border-color 0.15s ease;
}
.footer__legal a:hover,
.footer__legal a:focus-visible {
  color: var(--lc-green);
  border-color: var(--lc-green);
}

/* ---------- Buttons ---------- */
.lc-btn {
  display: inline-block;
  padding: 0.7em 1.5em;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--lc-paper);
  background: var(--lc-red);
  border: 2px solid var(--lc-ink);
  box-shadow: var(--lc-shadow-sm);
  cursor: pointer;
  transform: skewX(-8deg);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.lc-btn:hover,
.lc-btn:focus-visible {
  transform: skewX(-8deg) translate(-2px, -2px);
  box-shadow: var(--lc-shadow);
  background: var(--lc-amber);
  color: var(--lc-ink);
}
.lc-btn--ghost {
  background: transparent;
  color: var(--lc-ink);
  box-shadow: none;
}
.lc-btn--ghost:hover,
.lc-btn--ghost:focus-visible {
  background: var(--lc-amber);
  color: var(--lc-ink);
  box-shadow: var(--lc-shadow-sm);
}
.lc-section--dark .lc-btn--ghost,
.lc-section--ink .lc-btn--ghost {
  color: var(--lc-paper);
  border-color: var(--lc-paper);
  box-shadow: none;
}
.lc-section--dark .lc-btn--ghost:hover,
.lc-section--dark .lc-btn--ghost:focus-visible,
.lc-section--ink .lc-btn--ghost:hover,
.lc-section--ink .lc-btn--ghost:focus-visible {
  background: var(--lc-paper);
  color: var(--lc-ink);
  box-shadow: var(--lc-shadow-sm);
}
.lc-btn--sm {
  font-size: 0.72rem;
  padding: 0.45em 1em;
}

/* ---------- Filter Buttons ---------- */
.lc-filter-btn {
  display: inline-block;
  padding: 0.4em 0.9em;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--lc-paper);
  color: var(--lc-ink);
  border: 2px solid var(--lc-ink);
  cursor: pointer;
  transform: skewX(-6deg);
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.lc-filter-btn:hover,
.lc-filter-btn:focus-visible,
.lc-filter-btn.is-active {
  background: var(--lc-red);
  color: var(--lc-paper);
  box-shadow: 3px 3px 0 var(--lc-ink);
}

/* ---------- Tag & Plaque ---------- */
.lc-tag {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--lc-ink);
  background: var(--lc-amber);
  border: 2px solid var(--lc-ink);
  transform: skewX(-8deg);
}
.lc-plaque {
  display: inline-block;
  position: relative;
  background: var(--lc-paper);
  border: 2px solid var(--lc-ink);
  box-shadow: 3px 3px 0 var(--lc-ink);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-body);
  font-size: var(--fs-small);
}
.lc-plaque::before {
  content: attr(data-index);
  position: absolute;
  top: -0.55rem;
  left: 0.75rem;
  background: var(--lc-red);
  color: var(--lc-paper);
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0 0.4em;
  border: 1px solid var(--lc-ink);
}

/* ---------- Card ---------- */
.lc-card {
  background: var(--lc-paper);
  border: var(--lc-border-w) solid var(--lc-ink);
  box-shadow: var(--lc-shadow);
  padding: 1.5rem;
}

/* ---------- Breadcrumb ---------- */
.lc-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  margin: 0 0 1.5rem;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  color: var(--lc-steel);
}
.lc-breadcrumb a {
  color: var(--lc-red);
  text-decoration: none;
  border-bottom: 1px solid var(--lc-red);
}
.lc-breadcrumb a:hover,
.lc-breadcrumb a:focus-visible {
  color: var(--lc-ink);
  border-color: var(--lc-ink);
}
.lc-breadcrumb [aria-current="page"] {
  color: var(--lc-ink);
  font-weight: 700;
}
.lc-breadcrumb__sep {
  color: var(--lc-steel);
  margin-inline: 0.15rem;
}

/* ---------- Image Placeholder ---------- */
.lc-image {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background:
    repeating-linear-gradient(45deg, rgba(230, 57, 70, 0.16) 0 2px, transparent 2px 14px),
    linear-gradient(145deg, var(--lc-teal) 0%, var(--lc-blue) 70%, var(--lc-ink) 100%);
  border: var(--lc-border-w) solid var(--lc-ink);
  overflow: hidden;
}
.lc-image::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.4rem 0.8rem;
  background: rgba(22, 25, 37, 0.85);
  color: var(--lc-paper);
  font-family: var(--font-body);
  font-size: var(--fs-tiny);
  letter-spacing: 0.08em;
  border-top: 2px solid var(--lc-red);
}
.lc-image--portrait { aspect-ratio: 3 / 4; }
.lc-image--wide { aspect-ratio: 21 / 9; }

/* ---------- Reveal & Filter Animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-filter-item]:not([hidden]) {
  animation: lc-fade-in 0.35s ease both;
}
@keyframes lc-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .header__inner {
    min-height: 68px;
  }
  .brand__name {
    font-size: 1.4rem;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--lc-blue);
    border-top: var(--lc-border-w) solid var(--lc-red);
    border-bottom: var(--lc-border-w) solid var(--lc-ink);
    box-shadow: var(--lc-shadow-sm);
  }
  .site-nav[data-open] {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem var(--lc-gutter);
  }
  .nav-list__link {
    justify-content: space-between;
    width: 100%;
    padding: 0.85rem 0.75rem;
    border-bottom: 1px solid var(--lc-teal);
  }
  .nav-list__item:last-child .nav-list__link {
    border-bottom: 0;
  }
  .nav-list__link:hover,
  .nav-list__link:focus-visible {
    background: var(--lc-teal);
    border-color: transparent;
  }
  .nav-list__link[aria-current="page"] {
    background: var(--lc-red);
    border-color: var(--lc-red);
  }
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .header__inner {
    flex-wrap: wrap;
    min-height: 60px;
  }
  .brand__kicker {
    font-size: 0.6rem;
  }
  .brand__tagline {
    font-size: 0.6rem;
  }
  .data-ticker {
    padding-block: 0.3rem;
  }
  .data-ticker__text {
    font-size: 0.7rem;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-block: 2.25rem 1.5rem;
  }
  .footer__brand {
    grid-column: auto;
  }
  .footer__meta {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer__legal {
    gap: 0.75rem;
  }
}

/* ---------- 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;
  }
  .data-ticker__inner {
    animation: none;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
  [data-filter-item]:not([hidden]) {
    animation: none;
  }
}