/* ============================================================
   LUCKY赛场 · site.css
   共享外壳 / 基础组件 / 图片容器 / 筛选与显现协议
   ============================================================ */

/* ---------- 1. reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, figure, blockquote, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

/* ---------- 2. tokens ---------- */
:root {
  --ink-0: #06120F;
  --ink-1: #0C1F1A;
  --ink-2: #123029;
  --cyan: #37E0C8;
  --gold: #F2C24B;
  --paper: #F4EFE3;
  --mute: #A7B8B0;
  --copper: #7A5C12;
  --alert: #E0523C;

  --rail-w: 88px;
  --bar-h: 68px;

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

  --dur: 240ms;
  --shadow-hard: 0 6px 0 -2px #000, 0 18px 40px rgba(0, 0, 0, .55);
  --shadow-soft: 0 10px 26px rgba(0, 0, 0, .5);
}

/* ---------- 3. base typography ---------- */
body {
  min-height: 100vh;
  padding-left: var(--rail-w);
  background: var(--ink-0);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
}

p { max-width: 40em; }

::selection { background: var(--cyan); color: var(--ink-0); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

#main-content {
  display: block;
  scroll-margin-top: calc(var(--bar-h) + 12px);
}

/* ---------- 4. skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: calc(var(--rail-w) + 10px);
  z-index: 200;
  padding: 12px 18px;
  background: var(--gold);
  color: var(--ink-0);
  font: 600 13px/1 var(--font-data);
  letter-spacing: .1em;
  box-shadow: var(--shadow-hard);
  transform: translateY(-180%);
  transition: transform 160ms ease;
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}

/* ---------- 5. header shell ---------- */
.site-header {
  position: relative;
  z-index: 90;
}

.site-header__bar {
  position: sticky;
  top: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 30px);
  height: var(--bar-h);
  padding: 0 clamp(14px, 3vw, 36px);
  background: linear-gradient(180deg, rgba(12, 31, 26, .97), rgba(6, 18, 15, .95));
  border-bottom: 2px solid var(--ink-2);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(6px);
}
.site-header__bar::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--copper) 0 14px, transparent 14px 32px);
  opacity: .85;
  pointer-events: none;
}
.site-header[data-scrolled] .site-header__bar {
  box-shadow: 0 16px 36px rgba(0, 0, 0, .72);
}

/* brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--paper);
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: var(--gold);
  color: var(--ink-0);
  font: 900 15px/1 var(--font-display);
  letter-spacing: -.02em;
  box-shadow: 0 3px 0 var(--copper);
}
.brand__text { display: flex; flex-direction: column; gap: 2px; }
.brand__name {
  font: 900 17px/1.05 var(--font-display);
  letter-spacing: -.01em;
}
.brand__sub {
  font: 500 10px/1.4 var(--font-data);
  letter-spacing: .16em;
  color: var(--mute);
}
.brand--footer .brand__mark { width: 46px; height: 46px; font-size: 18px; }
.brand--footer .brand__name { font-size: 23px; }
.brand--footer .brand__sub { font-size: 11px; letter-spacing: .18em; }

/* status chip */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  max-width: 100%;
  padding: 8px 14px;
  border: 2px solid var(--ink-2);
  background: rgba(18, 48, 41, .5);
  font: 500 12px/1.4 var(--font-data);
  letter-spacing: .05em;
  color: var(--mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.status-chip__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(55, 224, 200, .18);
}
.status-chip__sep { color: var(--copper); }
.status-chip__text--alt { color: var(--gold); }

/* mobile toggle */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 58px;
  height: 44px;
  padding: 0 10px;
  border: 2px solid var(--ink-2);
  background: rgba(18, 48, 41, .55);
  color: var(--paper);
  font: 600 11px/1 var(--font-data);
  letter-spacing: .12em;
}
.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
}
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--gold);
  transition: transform 200ms ease, opacity 160ms ease;
}
.site-header[data-open] .nav-toggle__bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}
.site-header[data-open] .nav-toggle__bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* ---------- 6. rail navigation ---------- */
.site-nav {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 70;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  padding: 16px 8px 18px;
  background:
    linear-gradient(180deg, #081713 0%, var(--ink-0) 46%, #0A1C17 100%);
  border-right: 2px solid var(--ink-2);
  box-shadow: 6px 0 30px rgba(0, 0, 0, .6), inset -2px 0 0 rgba(122, 92, 18, .35);
  transition: transform 220ms ease;
}
.site-nav__label {
  display: block;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--ink-2);
  text-align: center;
  font: 600 9px/1.5 var(--font-data);
  letter-spacing: .18em;
  color: var(--copper);
}
.site-nav__list {
  counter-reset: navitem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: thin;
}
.site-nav__item { counter-increment: navitem; }
.site-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 56px;
  padding: 10px 4px;
  border: 2px solid transparent;
  color: var(--mute);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .08em;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.site-nav__link::before {
  content: counter(navitem, decimal-leading-zero);
  font: 600 9px/1 var(--font-data);
  letter-spacing: .1em;
  color: var(--copper);
  transition: color 160ms ease;
}
.site-nav__text {
  display: block;
  width: 2.15em;
  margin-inline: auto;
  text-align: center;
  word-break: break-all;
}
.site-nav__link:hover {
  color: var(--paper);
  background: rgba(55, 224, 200, .08);
  border-color: rgba(55, 224, 200, .28);
}
.site-nav__link[aria-current="page"] {
  color: var(--paper);
  background: var(--ink-2);
  border-color: var(--ink-2);
  box-shadow: inset 3px 0 0 var(--cyan), 0 3px 0 rgba(0, 0, 0, .5);
}
.site-nav__link[aria-current="page"]::before { color: var(--cyan); }
.site-nav__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.site-nav__foot {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 2px solid var(--ink-2);
  display: flex;
  justify-content: center;
}

/* scrim */
.site-scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(3, 9, 7, .74);
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, visibility 200ms ease;
}

/* ---------- 7. buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 20px;
  border: 2px solid var(--gold);
  background: transparent;
  color: var(--gold);
  font: 600 13px/1 var(--font-data);
  letter-spacing: .14em;
  text-align: center;
  transition: transform var(--dur) ease, box-shadow var(--dur) ease, background-color var(--dur) ease, color var(--dur) ease, border-color var(--dur) ease;
}
.btn:hover {
  background: var(--gold);
  color: var(--ink-0);
  transform: translateY(-2px);
  box-shadow: 0 4px 0 var(--copper);
}
.btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

.btn--gold {
  background: var(--gold);
  color: var(--ink-0);
  border-color: var(--gold);
  box-shadow: 0 4px 0 var(--copper);
}
.btn--gold:hover {
  background: var(--paper);
  border-color: var(--paper);
  box-shadow: 0 5px 0 var(--copper);
}

.btn--ghost {
  border-color: var(--ink-2);
  color: var(--paper);
  background: rgba(12, 31, 26, .6);
}
.btn--ghost:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-0);
  box-shadow: 0 4px 0 #0B6B5F;
}

.btn--rail {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  min-height: 118px;
  padding: 16px 10px;
  font-size: 12px;
  letter-spacing: .22em;
  background: var(--gold);
  color: var(--ink-0);
  border-color: var(--gold);
  box-shadow: 0 4px 0 var(--copper);
}
.btn--rail:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-0);
  box-shadow: 0 4px 0 #0B6B5F;
}

/* ---------- 8. layout helpers ---------- */
.shell {
  width: min(1240px, calc(100% - clamp(28px, 6vw, 88px)));
  margin-inline: auto;
}
.section { padding-block: clamp(44px, 7vw, 92px); }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 18px 40px;
  justify-content: space-between;
  padding-bottom: 18px;
  margin-bottom: clamp(22px, 3vw, 36px);
  border-bottom: 2px solid var(--ink-2);
}

.display-title {
  font-size: clamp(34px, 5.6vw, 62px);
  line-height: 1.02;
  letter-spacing: -.02em;
  font-stretch: condensed;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 600 11px/1.4 var(--font-data);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--cyan);
}
.lede {
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.7;
  max-width: 38em;
  color: var(--paper);
  opacity: .84;
}

/* ---------- 9. panels & rules ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 3vw, 30px);
  background: var(--ink-1);
  border: 2px solid var(--ink-2);
  box-shadow: var(--shadow-hard);
}
.panel--ticked::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 46px;
  height: 6px;
  background: var(--cyan);
}
.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--ink-2);
}
.rule {
  height: 0;
  border: 0;
  border-top: 2px dashed var(--ink-2);
  margin: 0;
}

/* ---------- 10. crumb ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font: 500 12px/1.6 var(--font-data);
  letter-spacing: .08em;
  color: var(--mute);
}
.crumbs__link { color: var(--mute); transition: color 160ms ease; }
.crumbs__link:hover { color: var(--cyan); }
.crumbs__sep { color: var(--copper); }
.crumbs__current { color: var(--paper); }

/* ---------- 11. media containers ---------- */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 2px solid var(--ink-2);
  background: var(--ink-1);
  box-shadow: var(--shadow-hard);
}
.media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .55;
  background:
    repeating-linear-gradient(90deg, rgba(55, 224, 200, .10) 0 2px, transparent 2px 46px),
    repeating-linear-gradient(0deg, rgba(242, 194, 75, .07) 0 2px, transparent 2px 46px),
    radial-gradient(120% 100% at 15% 0%, rgba(55, 224, 200, .16), transparent 60%),
    radial-gradient(90% 90% at 100% 100%, rgba(242, 194, 75, .14), transparent 60%);
}
.media__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}
.media--wide .media__img { aspect-ratio: 21 / 9; }
.media--tall .media__img { aspect-ratio: 3 / 4; }
.media__caption {
  position: relative;
  z-index: 2;
  display: block;
  padding: 10px 14px;
  background: rgba(6, 18, 15, .9);
  border-top: 2px solid var(--ink-2);
  font: 500 11px/1.6 var(--font-data);
  letter-spacing: .1em;
  color: var(--mute);
}

/* ---------- 12. tags / numbers / filters ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 2px solid var(--ink-2);
  background: rgba(18, 48, 41, .45);
  font: 500 11px/1.4 var(--font-data);
  letter-spacing: .1em;
  color: var(--mute);
}
.data-label {
  font: 600 11px/1.4 var(--font-data);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mute);
}
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.filter-btn {
  min-height: 44px;
  padding: 0 16px;
  border: 2px solid var(--ink-2);
  background: rgba(12, 31, 26, .7);
  color: var(--mute);
  font: 600 12px/1 var(--font-data);
  letter-spacing: .12em;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}
.filter-btn:hover { color: var(--paper); border-color: var(--copper); }
.filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-0);
  box-shadow: 0 3px 0 #0B6B5F;
}
.filter-btn:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.filter-count {
  font: 600 12px/1 var(--font-data);
  letter-spacing: .12em;
  color: var(--gold);
}

/* ---------- 13. reveal protocol ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur) ease, transform var(--dur) ease;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 14. footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 110px);
  border-top: 2px solid var(--ink-2);
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(55, 224, 200, .10), transparent 60%),
    radial-gradient(90% 90% at 92% 8%, rgba(242, 194, 75, .10), transparent 62%),
    #04100D;
  box-shadow: inset 0 6px 0 -4px var(--copper);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 8px;
  pointer-events: none;
  opacity: .7;
  background: repeating-linear-gradient(90deg, var(--ink-2) 0 2px, transparent 2px 22px);
}
.site-footer__inner {
  width: min(1240px, calc(100% - clamp(28px, 6vw, 88px)));
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) 0 0;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: clamp(28px, 5vw, 64px);
}
.site-footer__brand { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.site-footer__note {
  max-width: 34em;
  padding-left: 12px;
  border-left: 2px solid var(--copper);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}
.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.site-footer__col { min-width: 0; }
.site-footer__title {
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 2px solid var(--ink-2);
  font: 600 11px/1.4 var(--font-data);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
}
.site-footer__list { display: flex; flex-direction: column; }
.site-footer__link {
  display: block;
  padding: 9px 0 9px 0;
  border-bottom: 2px solid rgba(18, 48, 41, .7);
  color: var(--mute);
  font-size: 14px;
  transition: color 160ms ease, padding-left 160ms ease, border-color 160ms ease;
}
.site-footer__link:hover {
  color: var(--cyan);
  padding-left: 8px;
  border-color: rgba(55, 224, 200, .4);
}
.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 32px;
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 2px solid var(--ink-2);
}
.site-footer__contact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
}
.site-footer__contact-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}
.site-footer__key {
  font: 600 10px/1.4 var(--font-data);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--copper);
}
.site-footer__value {
  font: 500 13px/1.6 var(--font-data);
  letter-spacing: .02em;
  color: var(--paper);
  word-break: break-all;
}
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  margin-top: clamp(22px, 3vw, 32px);
  padding: 18px 0 28px;
  border-top: 2px solid var(--ink-2);
  font: 500 12px/1.6 var(--font-data);
  letter-spacing: .05em;
  color: var(--mute);
}
.site-footer__icp { color: var(--mute); }
.site-footer__copy { margin-left: auto; color: var(--mute); }

/* ---------- 15. responsive ---------- */
@media (max-width: 900px) {
  :root { --bar-h: 60px; }

  body { padding-left: 0; }

  .skip-link { left: 10px; }

  .site-header__bar {
    height: var(--bar-h);
    padding: 0 12px;
    gap: 10px;
  }
  .brand__mark { width: 32px; height: 32px; font-size: 13px; }
  .brand__name { font-size: 15px; }
  .brand__sub { font-size: 9px; letter-spacing: .12em; }

  .status-chip {
    margin-left: auto;
    padding: 6px 10px;
    font-size: 11px;
    max-width: 44vw;
  }
  .status-chip__text--alt,
  .status-chip__sep { display: none; }

  .nav-toggle { display: inline-flex; position: relative; z-index: 85; }

  .site-nav {
    top: var(--bar-h);
    bottom: 0;
    width: min(84vw, 320px);
    padding: 18px 12px 20px;
    transform: translateX(-104%);
    box-shadow: 14px 0 44px rgba(0, 0, 0, .72);
  }
  .site-header[data-open] .site-nav { transform: translateX(0); }

  .site-nav__label {
    text-align: left;
    padding-left: 4px;
    font-size: 10px;
  }
  .site-nav__list {
    gap: 4px;
    overflow-y: auto;
  }
  .site-nav__link {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    width: 100%;
    min-height: 52px;
    padding: 12px 14px;
    font-size: 15px;
    text-align: left;
  }
  .site-nav__link::before { font-size: 10px; }
  .site-nav__text {
    width: auto;
    margin-inline: 0;
    text-align: left;
    word-break: normal;
  }
  .site-nav__link[aria-current="page"] {
    box-shadow: inset 3px 0 0 var(--cyan);
  }
  .site-nav__foot {
    justify-content: stretch;
    padding: 14px 4px 0;
  }
  .btn--rail {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    width: 100%;
    min-height: 48px;
    padding: 0 16px;
    font-size: 13px;
    letter-spacing: .16em;
  }

  .site-scrim { display: block; }
  .site-header[data-open] .site-scrim {
    opacity: 1;
    visibility: visible;
  }

  html.is-nav-open { overflow: hidden; }

  .site-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .site-footer__copy { margin-left: 0; }
}

@media (max-width: 620px) {
  .site-footer__cols { grid-template-columns: minmax(0, 1fr); }
  .brand__sub { display: none; }
  .nav-toggle__label { display: none; }
  .site-footer__contact-list { flex-direction: column; gap: 8px; }
  .media--wide .media__img { aspect-ratio: 16 / 10; }
}

@media (max-width: 380px) {
  .status-chip { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}