/* ============================================================
   B体育在线 / assets/site.css
   夜场仪表盘系统：炭黑 + 深墨绿 + 荧光青柠 / 暖橙红
   ============================================================ */

/* ---------- 1. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, dl, dd, figure, blockquote, fieldset {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. TOKENS ---------- */
:root {
  --ink: #0B0F0D;
  --moss: #0E2A20;
  --panel: #141A17;
  --lime: #C8FF3D;
  --lime-dim: #7BA82A;
  --ember: #FF5A36;
  --paper: #F2EFE4;
  --mist: #AAB6AE;
  --line: #2E3A33;
  --signal: #49E0C2;

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

  --shell-max: 1320px;
  --gutter: clamp(1rem, 4vw, 3rem);
  --rule: 1px solid var(--line);
  --dur: .22s;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --nav-bp: 900px;
}

/* ---------- 3. BASE TYPOGRAPHY ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink);
  background-image:
    linear-gradient(180deg, rgba(14, 42, 32, .62) 0, rgba(11, 15, 13, 0) 460px),
    repeating-linear-gradient(90deg, rgba(46, 58, 51, .26) 0 1px, transparent 1px 88px);
  background-repeat: no-repeat, repeat;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(.95rem, .9rem + .2vw, 1.05rem);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5.2rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.9rem); }
h3 { font-size: clamp(1.12rem, 1.7vw, 1.5rem); line-height: 1.3; }

p { max-width: 68ch; }
small { font-size: .8em; }
code, kbd, samp { font-family: var(--font-mono); font-size: .92em; }

::selection { background: var(--lime); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(242, 239, 228, .16);
}

html[data-nav-open="true"] { overflow: hidden; }

/* ---------- 4. UTILITIES ---------- */
.sk-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sk-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .06em;
}

.sk-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. SKIP LINK ---------- */
.sk-skip {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  padding: .7rem 1.15rem;
  background: var(--lime);
  color: var(--ink);
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .06em;
  transform: translateY(-130%);
  transition: transform var(--dur) var(--ease);
}

.sk-skip:focus { transform: translateY(0); }

/* ---------- 6. HEADER ---------- */
.sk-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.sk-strip {
  background: var(--moss);
  border-bottom: 1px solid var(--line);
}

.sk-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: .3rem var(--gutter);
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.sk-strip__note {
  max-width: none;
  color: var(--lime-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sk-strip__meta {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex: 0 0 auto;
}

.sk-strip__item { color: var(--mist); }

.sk-strip__status {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--lime);
}

.sk-dot {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--lime);
  animation: sk-pulse 2.6s ease-in-out infinite;
}

@keyframes sk-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .28; }
}

.sk-header__bar {
  display: flex;
  align-items: center;
  gap: clamp(.6rem, 2vw, 1.9rem);
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: .72rem var(--gutter);
  min-height: 72px;
}

/* brand lockup */
.sk-brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  flex: 0 0 auto;
}

.sk-brand__mark {
  position: relative;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--moss), var(--ink));
}

.sk-brand__mark::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  background: var(--lime);
}

.sk-brand__mark::after {
  content: "";
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 14px;
  height: 2px;
  background: var(--signal);
}

.sk-brand__text { display: block; }

.sk-brand__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--paper);
}

.sk-brand__tag {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .18em;
  color: var(--mist);
}

/* navigation */
.sk-nav { margin-left: auto; }

.sk-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(.2rem, 1.3vw, 1rem);
}

.sk-nav__item { display: block; }

.sk-nav__link {
  position: relative;
  display: block;
  padding: .55rem .4rem;
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.sk-nav__link::after {
  content: "";
  position: absolute;
  left: .4rem;
  right: .4rem;
  bottom: .18rem;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.sk-nav__link:hover,
.sk-nav__link:focus-visible { color: var(--paper); }

.sk-nav__link:hover::after,
.sk-nav__link:focus-visible::after { transform: scaleX(1); }

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

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

/* actions */
.sk-header__actions {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex: 0 0 auto;
}

/* ---------- 7. BUTTONS ---------- */
.sk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  min-height: 42px;
  padding: .55rem 1rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: .82rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .06em;
  text-align: center;
  transition:
    background var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.sk-btn--ghost {
  background: transparent;
  color: var(--mist);
}

.sk-btn--ghost:hover,
.sk-btn--ghost:focus-visible {
  background: var(--panel);
  border-color: var(--lime-dim);
  color: var(--lime);
}

.sk-btn--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.sk-btn--lime:hover,
.sk-btn--lime:focus-visible {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.sk-btn--ember {
  background: var(--ember);
  border-color: var(--ember);
  color: #180804;
}

.sk-btn--ember:hover,
.sk-btn--ember:focus-visible {
  background: #ff7a5c;
  border-color: #ff7a5c;
  color: #180804;
}

/* ---------- 8. NAV TOGGLE + SCRIM ---------- */
.sk-nav-toggle {
  display: none;
  position: relative;
  z-index: 90;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease);
}

.sk-nav-toggle:hover { border-color: var(--lime-dim); }

.sk-nav-toggle__bars {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: var(--lime);
  transition: background var(--dur) var(--ease);
}

.sk-nav-toggle__bars::before,
.sk-nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--lime);
  transition: transform var(--dur) var(--ease);
}

.sk-nav-toggle__bars::before { top: -6px; }
.sk-nav-toggle__bars::after { top: 6px; }

.sk-header[data-open="true"] .sk-nav-toggle__bars { background: transparent; }
.sk-header[data-open="true"] .sk-nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.sk-header[data-open="true"] .sk-nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.sk-scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(6, 9, 8, .74);
  cursor: default;
}

/* ---------- 9. SCROLL PROGRESS ---------- */
.sk-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  pointer-events: none;
}

.sk-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--lime), var(--signal) 58%, var(--ember));
  transition: width .1s linear;
}

/* ---------- 10. FOOTER ---------- */
.sk-footer {
  position: relative;
  background: var(--moss);
  border-top: 1px solid var(--line);
  color: var(--paper);
}

.sk-footer__ruler {
  height: 10px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 24px);
  opacity: .9;
}

.sk-footer__inner {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(2rem, 4.5vw, 3.5rem) var(--gutter) 1.25rem;
}

.sk-footer__grid {
  display: grid;
  grid-template-columns:
    minmax(200px, 1.2fr)
    repeat(3, minmax(110px, .8fr))
    minmax(220px, 1.35fr);
  gap: clamp(1.5rem, 3vw, 2.75rem);
}

.sk-footer__brand {
  display: flex;
  flex-direction: column;
  gap: .9rem;
}

.sk-brand--footer .sk-brand__mark { width: 44px; height: 44px; }
.sk-brand--footer .sk-brand__name { font-size: 1.28rem; }

.sk-footer__tagline {
  max-width: 20ch;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.sk-footer__col { display: block; }

.sk-footer__col-title {
  margin-bottom: .9rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lime-dim);
}

.sk-footer__links {
  display: flex;
  flex-direction: column;
  gap: .45rem;
}

.sk-footer__link {
  display: inline-block;
  font-size: .92rem;
  color: var(--paper);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.sk-footer__link:hover,
.sk-footer__link:focus-visible {
  color: var(--lime);
  transform: translateX(3px);
}

.sk-footer__contact { display: block; }

.sk-footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.sk-footer__contact-item {
  display: grid;
  grid-template-columns: 4.6rem minmax(0, 1fr);
  gap: .5rem;
  align-items: start;
  padding-bottom: .55rem;
  border-bottom: 1px solid rgba(46, 58, 51, .8);
}

.sk-footer__contact-label {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .12em;
  color: var(--mist);
  text-transform: uppercase;
  padding-top: .12rem;
}

.sk-footer__contact-value {
  font-size: .86rem;
  line-height: 1.55;
  color: var(--paper);
  word-break: break-word;
}

.sk-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.1rem;
  border-top: var(--rule);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--mist);
}

.sk-footer__legal { max-width: none; color: var(--mist); }
.sk-footer__icp { color: var(--paper); }

.sk-footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.sk-footer__meta-link {
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.sk-footer__meta-link:hover,
.sk-footer__meta-link:focus-visible { color: var(--lime); }

/* ---------- 11. SHARED PAGE COMPONENTS ---------- */
.sk-kicker {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime-dim);
}

.sk-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  flex: 0 0 auto;
  background: var(--lime);
}

.sk-tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .2rem .5rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  line-height: 1.4;
}

.sk-tag--lime { background: var(--lime); border-color: var(--lime); color: var(--ink); }
.sk-tag--ember { background: transparent; border-color: var(--ember); color: var(--ember); }
.sk-tag--paper { background: var(--paper); border-color: var(--paper); color: var(--ink); }

.sk-panel {
  background: var(--panel);
  border: var(--rule);
  padding: clamp(1rem, 2vw, 1.5rem);
}

.sk-panel--paper {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.sk-divider {
  height: 1px;
  border: 0;
  margin-block: clamp(1.5rem, 3vw, 2.5rem);
  background: var(--line);
}

.sk-grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.75rem);
}

.sk-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sk-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sk-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* breadcrumbs */
.sk-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  padding-block: .9rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
}

.sk-crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.sk-crumbs__item + .sk-crumbs__item::before {
  content: "/";
  color: var(--lime-dim);
}

.sk-crumbs__link { color: var(--mist); transition: color var(--dur) var(--ease); }
.sk-crumbs__link:hover, .sk-crumbs__link:focus-visible { color: var(--lime); }
.sk-crumbs__current { color: var(--paper); }

/* image containers (no remote assets — page stage drops img/svg in) */
.sk-media {
  position: relative;
  overflow: hidden;
  border: var(--rule);
  background:
    linear-gradient(150deg, var(--panel) 0%, #0c1611 55%, var(--moss) 100%);
}

.sk-media img,
.sk-media svg,
.sk-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sk-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .32;
  background-image: repeating-linear-gradient(0deg, rgba(11, 15, 13, .55) 0 1px, transparent 1px 4px);
}

.sk-media--wide { aspect-ratio: 16 / 9; }
.sk-media--tall { aspect-ratio: 4 / 5; }
.sk-media--square { aspect-ratio: 1 / 1; }

.sk-media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: .3rem .55rem;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* ---------- 12. REVEAL PROTOCOL ---------- */
html[data-reveal="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
  transition-delay: var(--d, 0ms);
}

html[data-reveal="on"] [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 13. RESPONSIVE ---------- */
@media (max-width: 1180px) {
  .sk-strip__item:nth-child(1) { display: none; }
  .sk-nav__link { font-size: .82rem; }
}

@media (max-width: 1080px) {
  .sk-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .sk-footer__brand,
  .sk-footer__contact { grid-column: 1 / -1; }
  .sk-footer__contact-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .6rem 1.5rem;
  }
  .sk-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .sk-nav-toggle { display: inline-flex; }

  .sk-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 80;
    width: min(340px, 88vw);
    margin-left: 0;
    padding: 5.5rem 1.5rem 2rem;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--moss);
    border-left: 1px solid var(--line);
    box-shadow: -18px 0 44px rgba(4, 7, 6, .55);
    transform: translateX(103%);
    visibility: hidden;
    transition: transform .28s var(--ease), visibility .28s var(--ease);
  }

  .sk-header[data-open="true"] .sk-nav {
    transform: none;
    visibility: visible;
  }

  .sk-header[data-open="true"] .sk-scrim { display: block; }

  .sk-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .sk-nav__link {
    padding: .95rem .25rem;
    border-bottom: 1px solid var(--line);
    font-size: 1.02rem;
    color: var(--paper);
  }

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

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

  .sk-nav__link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: -1.5rem;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--lime);
  }

  .sk-header__actions .sk-btn--ghost { display: none; }

  .sk-strip__meta { gap: .8rem; }
  .sk-strip__item { display: none; }
  .sk-strip__item:last-of-type { display: inline; }

  .sk-grid--2,
  .sk-grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .sk-brand__tag { display: none; }
  .sk-brand__mark { width: 34px; height: 34px; }
  .sk-header__bar { min-height: 64px; gap: .5rem; }
  .sk-btn { padding: .5rem .72rem; font-size: .76rem; min-height: 40px; }

  .sk-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .sk-footer__contact-list { grid-template-columns: minmax(0, 1fr); }
  .sk-footer__base { flex-direction: column; align-items: flex-start; }

  .sk-grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 14. REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .sk-dot { animation: none; }

  html[data-reveal="on"] [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
    transition-delay: 0ms;
  }

  .sk-nav { transition: none; }
  .sk-progress__bar { transition: none; }
}