/* ============================================
   新利主站 · /assets/site.css
   夜间赛事控制室：深墨蓝画布 + 等宽刻度 + 青橙双信号
   ============================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

html.nav-open { overflow: hidden; }

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

ul, ol { padding: 0; list-style: none; }

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

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ---------- tokens ---------- */
:root {
  --ink-950: #050E1A;
  --ink-900: #071A2E;
  --ink-800: #0D2740;
  --ink-700: #14374F;
  --paper: #E9F3FA;
  --paper-soft: rgba(233, 243, 250, .86);
  --mist: #93AEC2;
  --cyan: #00E8D2;
  --cyan-dim: #0BB7A6;
  --orange: #FF8A3D;
  --orange-soft: #FFC98A;
  --hair: rgba(20, 55, 79, .85);
  --hair-soft: rgba(20, 55, 79, .5);

  --font-display: 'Oswald', 'Barlow Condensed', 'Noto Sans SC', 'Source Han Sans SC', '思源黑体', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: 'Noto Sans SC', 'Inter', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'JetBrains Mono', 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --header-h: 76px;
  --radius-s: 6px;
  --radius-m: 16px;
  --radius-l: 30px;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --shadow-band: 0 24px 60px rgba(5, 14, 26, .55);
}

/* ---------- base ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(58vw 44vh at 92% -8%, rgba(0, 232, 210, .10), transparent 62%),
    radial-gradient(48vw 42vh at -10% 24%, rgba(255, 138, 61, .08), transparent 60%),
    radial-gradient(74vw 58vh at 42% 110%, rgba(13, 39, 64, .92), transparent 72%);
  background-repeat: no-repeat;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

@media (min-width: 900px) {
  body { font-size: 17px; }
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--paper);
}

h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 1.6vw, 1.35rem); }

p { color: var(--paper-soft); }

strong, b { color: var(--paper); font-weight: 700; }

::selection { background: var(--cyan); color: var(--ink-950); }

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

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

.section { padding-block: clamp(48px, 8vw, 108px); }
.section--band { background: var(--ink-800); }
.section--dark { background: var(--ink-950); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: clamp(24px, 4vw, 46px);
}

.section-head__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.01em;
}

.section-head__lede {
  max-width: 62ch;
  font-size: 15px;
  color: var(--mist);
}

.grid { display: grid; gap: clamp(20px, 3vw, 40px); }

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

@media (min-width: 1024px) {
  .grid--asym { grid-template-columns: minmax(200px, 3fr) minmax(0, 9fr); }
}

.col-axis { min-width: 0; }
.col-flow { min-width: 0; }

.axis-sticky { position: sticky; top: calc(var(--header-h) + 24px); }

.rule-h {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--ink-700), rgba(20, 55, 79, 0));
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  top: 8px;
  left: var(--gutter);
  z-index: 300;
  padding: 10px 18px;
  border-radius: var(--radius-s);
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  transform: translateY(-180%);
  transition: transform .2s var(--ease);
}

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

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 11px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .02em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.btn--primary { background: var(--orange); color: var(--ink-950); }
.btn--primary:hover { background: var(--orange-soft); transform: translateY(-1px); }

.btn--ghost {
  border-color: var(--ink-700);
  background: rgba(20, 55, 79, .32);
  color: var(--paper);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

.btn--quiet { padding-inline: 0; color: var(--cyan); }
.btn--quiet:hover { color: var(--paper); }

/* ---------- exhibition label ---------- */
.tag-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.tag-label__num { color: var(--cyan); }

.tag-label__name { display: inline-flex; align-items: center; gap: 12px; }

.tag-label__name::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--cyan);
  opacity: .85;
}

/* ---------- numbers ---------- */
.num,
.num--accent,
.num--warm {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.num--accent { color: var(--cyan); font-weight: 700; }
.num--warm { color: var(--orange); font-weight: 700; }

/* ---------- breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 10px; }

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--ink-700);
}

.breadcrumb__link { color: var(--mist); transition: color .2s var(--ease); }
.breadcrumb__link:hover { color: var(--cyan); }

.breadcrumb__current { color: var(--paper); }

/* ---------- prose ---------- */
.prose { max-width: 68ch; }

.prose > * + * { margin-top: 1.05em; }

.prose h2 {
  margin-top: 2.2em;
  margin-bottom: .5em;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
}

.prose h3 { margin-top: 1.8em; margin-bottom: .4em; }

.prose p { color: var(--paper-soft); }

.prose ul { display: grid; gap: 10px; }

.prose ul > li {
  position: relative;
  padding-left: 24px;
  color: var(--paper-soft);
}

.prose ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 12px;
  height: 1px;
  background: var(--cyan);
}

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

/* ---------- media frame ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hair);
  border-radius: var(--radius-m);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-950));
}

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

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 18px 14px;
  background: linear-gradient(180deg, rgba(5, 14, 26, 0), rgba(5, 14, 26, .9));
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

/* ---------- chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 18px;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  background: rgba(13, 39, 64, .6);
  color: var(--mist);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .06em;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.chip:hover { color: var(--paper); border-color: var(--mist); }

.chip[aria-pressed="true"] {
  background: rgba(0, 232, 210, .12);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- callout ---------- */
.callout {
  padding: 18px 22px;
  border-left: 2px solid var(--orange);
  border-radius: 0 var(--radius-m) var(--radius-m) 0;
  background: linear-gradient(90deg, rgba(255, 138, 61, .12), rgba(255, 138, 61, 0) 72%);
  color: var(--paper-soft);
}

.callout--calm {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(0, 232, 210, .1), rgba(0, 232, 210, 0) 72%);
}

/* ---------- date badge ---------- */
.date-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: 66px;
  padding: 8px 10px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-s);
  background: var(--ink-800);
}

.date-badge__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.date-badge__meta {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.date-badge--next { border-color: var(--orange); }
.date-badge--next .date-badge__num { color: var(--orange); }

/* ---------- motion utilities ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.is-current { color: var(--cyan); }

@keyframes livePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 232, 210, .45); }
  50% { box-shadow: 0 0 0 9px rgba(0, 232, 210, 0); }
}

.is-live { animation: livePulse 2s ease-in-out infinite; }

/* ============================================
   header
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 26, 46, .93);
  border-bottom: 1px solid var(--hair);
  transition: background-color .28s var(--ease), border-color .28s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(5, 14, 26, .97);
  border-bottom-color: rgba(0, 232, 210, .3);
}

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.header-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.header-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(14px, 2.4vw, 36px);
  min-height: var(--header-h);
  transition: min-height .28s var(--ease);
}

.site-header.is-scrolled .header-inner { min-height: 60px; }

/* brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}

.brand__mark {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 3px;
  width: 30px;
  height: 30px;
  padding: 6px;
  border: 1px solid var(--ink-700);
  border-radius: 8px;
  background: linear-gradient(150deg, var(--ink-800), var(--ink-950));
}

.brand__mark-bar {
  display: block;
  height: 40%;
  border-radius: 1px;
  background: var(--cyan);
}

.brand__mark-bar:nth-child(2) { height: 72%; background: var(--paper); }
.brand__mark-bar:nth-child(3) { height: 100%; background: var(--orange); }

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }

.brand__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--paper);
}

.brand__sub {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--mist);
}

/* scale rule between brand and nav */
.header-rule {
  position: relative;
  display: block;
  height: 14px;
  min-width: 40px;
}

.header-rule::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, rgba(147, 174, 194, .28), var(--ink-700) 22%, var(--ink-700) 78%, rgba(147, 174, 194, .28));
}

.header-rule::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 6px;
  transform: translateY(-100%);
  background-image: repeating-linear-gradient(90deg, rgba(147, 174, 194, .45) 0 1px, transparent 1px 26px);
  transition: opacity .28s var(--ease);
}

.site-header.is-scrolled .header-rule::after { opacity: .35; }

/* nav zone */
.nav-zone {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.5vw, 22px);
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 2px;
  font-size: 15px;
  color: var(--mist);
  white-space: nowrap;
  transition: color .2s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .26s var(--ease);
}

.site-nav__link:hover { color: var(--paper); }
.site-nav__link:hover::after { transform: scaleX(.5); }

.site-nav__link[aria-current="page"] {
  color: var(--paper);
  font-weight: 500;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--orange);
  color: var(--ink-950);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .02em;
  white-space: nowrap;
  transition: background-color .2s var(--ease), transform .2s var(--ease);
}

.nav-cta:hover { background: var(--orange-soft); transform: translateY(-1px); }
.nav-cta:focus-visible { outline-color: var(--paper); }

/* nav toggle (mobile) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-self: end;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  color: var(--mist);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }

.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform .24s var(--ease), opacity .2s var(--ease);
}

.nav-toggle[aria-expanded="true"] {
  color: var(--cyan);
  border-color: var(--cyan);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================
   footer
   ============================================ */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  background: var(--ink-950);
  border-top: 1px solid var(--hair);
  color: var(--mist);
}

.footer-scale {
  height: 10px;
  border-bottom: 1px solid var(--hair-soft);
  background-image: repeating-linear-gradient(90deg, rgba(147, 174, 194, .3) 0 1px, transparent 1px 24px);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 80px);
  padding-block: clamp(36px, 5vw, 68px);
}

@media (min-width: 880px) {
  .footer-top { grid-template-columns: minmax(260px, 1fr) minmax(0, 1.5fr); }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-brand__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--paper);
}

.footer-brand__line {
  max-width: 32ch;
  font-size: 14px;
  color: var(--mist);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--hair-soft);
}

.footer-contact__item {
  display: flex;
  gap: 12px;
  font-size: 13px;
  line-height: 1.6;
}

.footer-contact__key {
  flex: none;
  min-width: 62px;
  padding-top: 3px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.footer-contact__val { color: var(--mist); word-break: break-word; }

.footer-nav { display: block; }

.footer-nav__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(20px, 4vw, 48px);
}

@media (max-width: 520px) {
  .footer-nav__list { grid-template-columns: minmax(0, 1fr); }
}

.footer-nav__item { border-bottom: 1px solid var(--hair-soft); }

.footer-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  font-size: 14px;
  color: var(--mist);
  transition: color .2s var(--ease);
}

.footer-nav__link::after {
  content: "→";
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--ink-700);
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.footer-nav__link:hover { color: var(--paper); }
.footer-nav__link:hover::after { color: var(--cyan); transform: translateX(3px); }
.footer-nav__link[aria-current="page"] { color: var(--cyan); }
.footer-nav__link[aria-current="page"]::after { color: var(--cyan); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 20px 28px;
  border-top: 1px solid var(--hair-soft);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
}

.footer-legal { color: var(--mist); }
.footer-meta { color: rgba(147, 174, 194, .75); }

/* ============================================
   responsive
   ============================================ */
@media (max-width: 1079px) {
  :root { --header-h: 68px; }

  .header-inner { grid-template-columns: minmax(0, 1fr) auto; }

  .header-rule { display: none; }

  .nav-toggle { display: inline-flex; }

  .nav-zone {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: grid;
    gap: 4px;
    padding: 14px var(--gutter) 26px;
    background: var(--ink-950);
    border-bottom: 1px solid var(--hair);
    box-shadow: var(--shadow-band);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s linear;
  }

  .nav-zone[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

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

  .site-nav__item { border-bottom: 1px solid var(--hair-soft); }

  .site-nav__link {
    min-height: 52px;
    padding-left: 16px;
    font-size: 16px;
    color: var(--paper);
  }

  .site-nav__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 7px;
    height: 1px;
    background: var(--ink-700);
  }

  .site-nav__link::after {
    left: 0;
    right: auto;
    bottom: 0;
    width: 3px;
    height: 100%;
    transform: scaleY(0);
    transform-origin: center top;
  }

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

  .nav-cta {
    justify-content: center;
    width: 100%;
    margin-top: 18px;
    min-height: 48px;
    font-size: 15px;
  }
}

@media (max-width: 420px) {
  .nav-toggle__label { display: none; }
  .brand__sub { font-size: 10px; letter-spacing: .12em; }
}

/* ============================================
   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;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .is-live { animation: none; box-shadow: 0 0 0 1px rgba(0, 232, 210, .5); }
}