/* ==========================================================================
   大江体育赛场 · 共享样式  /assets/site.css
   深空蓝夜间赛场 + 活力橙数据主线 + 荧光绿状态点
   ========================================================================== */

:root {
  --blue-deep: #0A1633;
  --blue-night: #101F45;
  --blue-line: #1B2E63;
  --blue-mist: #8FA6D8;
  --white-cool: #F2F5FF;
  --orange: #FF6A1A;
  --orange-soft: #FFB37A;
  --green-neon: #4CFF9E;
  --gray-carbon: #2A3244;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Courier New", monospace;

  --shell: min(1240px, 92vw);
  --shell-wide: min(1400px, 94vw);
  --bar-h: 60px;
  --radius-card: 22px;
  --radius-frame: 20px;
  --ease-out: cubic-bezier(0.22, 0.68, 0.34, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background-color: var(--blue-deep);
  color: var(--white-cool);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; }
table { border-collapse: collapse; width: 100%; }

::selection { background: var(--orange); color: var(--blue-deep); }

:focus-visible {
  outline: 2px solid var(--orange-soft);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 2. Layout ---------- */
.shell {
  width: var(--shell);
  margin-inline: auto;
}

.shell--wide {
  width: var(--shell-wide);
  margin-inline: auto;
}

.section { padding: 72px 0; }
.section--tight { padding: 48px 0; }

.grid-8 {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 24px;
}

.grid-8 > * { grid-column: span 8; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.offset-1 { grid-column-start: 2; }
.offset-2 { grid-column-start: 3; }

/* ---------- 3. Skip link ---------- */
.skip-link {
  position: fixed;
  left: 50%;
  top: 10px;
  z-index: 300;
  transform: translate(-50%, -180%);
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--orange);
  color: var(--blue-deep);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: transform 0.24s var(--ease-out);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* ---------- 4. Command bar ---------- */
.command-bar {
  position: sticky;
  top: 0;
  z-index: 120;
  height: var(--bar-h);
  background: var(--blue-deep);
  border-bottom: 1px solid var(--blue-line);
  transition: height 0.3s var(--ease-out);
}

.command-bar.is-condensed { --bar-h: 48px; }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--orange), var(--orange-soft) 55%, var(--green-neon));
  will-change: transform;
  pointer-events: none;
}

.command-bar__inner {
  width: var(--shell-wide);
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* brand */
.cmd-brand {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.cmd-mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border: 2px solid var(--orange);
  transform: rotate(45deg);
}

.cmd-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--green-neon);
}

.cmd-brand__text {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--white-cool);
  white-space: nowrap;
}

.cmd-brand__line {
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--blue-mist);
  padding-left: 11px;
  border-left: 1px solid var(--blue-line);
  white-space: nowrap;
}

/* nav */
.cmd-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.cmd-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.cmd-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 13px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--blue-mist);
  white-space: nowrap;
  transition: color 0.22s var(--ease-out), background-color 0.22s var(--ease-out);
}

.cmd-nav__link:hover {
  color: var(--white-cool);
  background: rgba(27, 46, 99, 0.7);
}

.cmd-nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

.cmd-nav__link[aria-current="page"] {
  color: var(--white-cool);
  background: rgba(27, 46, 99, 0.55);
}

.cmd-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--orange), var(--orange-soft));
}

.cmd-nav__link[aria-current="page"] .cmd-nav__index {
  color: var(--orange);
  opacity: 1;
}

/* utility */
.cmd-utility {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-lamp {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--blue-mist);
  white-space: nowrap;
}

.status-lamp__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-neon);
  animation: lampPulse 2.6s var(--ease-out) infinite;
}

@keyframes lampPulse {
  0%   { box-shadow: 0 0 0 0 rgba(76, 255, 158, 0.5); opacity: 1; }
  70%  { box-shadow: 0 0 0 7px rgba(76, 255, 158, 0); opacity: 0.72; }
  100% { box-shadow: 0 0 0 0 rgba(76, 255, 158, 0); opacity: 1; }
}

/* nav toggle */
.nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border: 1px solid var(--blue-line);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.22s var(--ease-out), background-color 0.22s var(--ease-out);
}

.nav-toggle:hover {
  border-color: var(--orange);
  background: rgba(27, 46, 99, 0.6);
}

.nav-toggle__bars {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  margin-top: -1px;
  transform: translateX(-50%);
  border-radius: 2px;
  background: var(--white-cool);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--white-cool);
  transition: transform 0.24s var(--ease-out);
}

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

.command-bar[data-open] .nav-toggle__bars { background: transparent; }
.command-bar[data-open] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.command-bar[data-open] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.24s var(--ease-out),
              color 0.24s var(--ease-out),
              border-color 0.24s var(--ease-out),
              transform 0.24s var(--ease-out);
}

.btn--primary {
  background: linear-gradient(115deg, var(--orange), var(--orange-soft));
  color: var(--blue-deep);
  font-weight: 700;
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -12px rgba(255, 106, 26, 0.85);
}

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

.btn--ghost:hover {
  border-color: var(--orange);
  color: var(--orange-soft);
}

.btn--sm {
  padding: 8px 15px;
  font-size: 13px;
}

/* ---------- 6. Section heading ---------- */
.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  align-items: start;
  margin-bottom: 34px;
}

.section-head__index {
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.section-head__title {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.section-head__lead {
  grid-column: 2;
  margin-top: 6px;
  max-width: 38ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--blue-mist);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue-mist);
}

/* ---------- 7. Content pieces ---------- */
.card {
  background: var(--blue-night);
  border: 1px solid var(--blue-line);
  border-radius: var(--radius-card);
  padding: 26px;
}

.prose {
  max-width: 40ch;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(242, 245, 255, 0.86);
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--blue-line), rgba(27, 46, 99, 0));
}

.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--blue-line);
  border-radius: 999px;
  background: rgba(27, 46, 99, 0.4);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--blue-mist);
}

.tag--live {
  color: var(--green-neon);
  border-color: rgba(76, 255, 158, 0.35);
}

/* ---------- 8. Breadcrumbs ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--blue-mist);
}

.breadcrumbs a {
  text-decoration: none;
  color: var(--blue-mist);
  transition: color 0.2s var(--ease-out);
}

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

.breadcrumbs__sep { opacity: 0.5; }

.breadcrumbs [aria-current="page"] { color: var(--white-cool); }

/* ---------- 9. Media frames ---------- */
.frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--blue-line);
  border-radius: var(--radius-frame);
  background: var(--blue-night);
}

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

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

.frame__ph {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(115deg,
      rgba(27, 46, 99, 0.85) 0 12px,
      rgba(16, 31, 69, 0.95) 12px 24px);
}

.frame__caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--blue-mist);
}

/* ---------- 10. Reveal protocol ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.42s var(--ease-out), transform 0.42s var(--ease-out);
}

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

/* ---------- 11. Footer ---------- */
.site-foot {
  position: relative;
  margin-top: 84px;
  padding: 64px 0 30px;
  background: var(--blue-night);
  border-top: 1px solid var(--blue-line);
}

.foot-rule {
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: min(460px, 55%);
  background: linear-gradient(90deg, var(--orange), rgba(255, 106, 26, 0));
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
  align-items: start;
}

.foot-brand__name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white-cool);
}

.foot-brand__meta {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--blue-mist);
}

.foot-col__title {
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue-mist);
}

.foot-list {
  display: grid;
  gap: 9px;
}

.foot-list a {
  font-size: 14px;
  color: rgba(242, 245, 255, 0.82);
  text-decoration: none;
  transition: color 0.2s var(--ease-out), opacity 0.2s var(--ease-out);
}

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

.foot-card {
  padding: 22px;
  border: 1px solid var(--blue-line);
  border-radius: 18px;
  background: var(--blue-deep);
}

.foot-card__text {
  margin-bottom: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--blue-mist);
}

.foot-contact {
  display: grid;
  gap: 9px;
  margin-bottom: 18px;
}

.foot-contact__row {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  align-items: baseline;
  padding-bottom: 9px;
  border-bottom: 1px dashed rgba(143, 166, 216, 0.22);
}

.foot-contact__row dt {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--blue-mist);
}

.foot-contact__row dd {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--white-cool);
  word-break: break-all;
}

.foot-contact__row--plain dd { font-family: var(--font-sans); }

.foot-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.foot-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid var(--blue-line);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--blue-mist);
}

.foot-base__item--mono { font-family: var(--font-mono); }

/* ---------- 12. Responsive ---------- */
@media (max-width: 1180px) {
  .cmd-brand__line { display: none; }
  .cmd-nav__link { padding: 9px 9px; gap: 5px; }
  .cmd-nav__link[aria-current="page"]::after { left: 9px; right: 9px; }
  .foot-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .foot-card { grid-column: span 3; }
}

@media (max-width: 1024px) {
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .foot-card { grid-column: span 2; }
  .section { padding: 60px 0; }
  .grid-8 { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 20px; }
  .grid-8 > * { grid-column: span 6; }
  .col-4 { grid-column: span 3; }
  .col-5 { grid-column: span 4; }
  .col-6 { grid-column: span 6; }
  .col-8 { grid-column: span 6; }
  .offset-1 { grid-column-start: 1; }
  .offset-2 { grid-column-start: 1; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 24px; }

  body { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)); }

  .command-bar {
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    border-bottom: 0;
    border-top: 1px solid var(--blue-line);
  }

  .command-bar.is-condensed { --bar-h: 64px; }

  .scroll-progress {
    top: -1px;
    bottom: auto;
  }

  .command-bar__inner {
    width: 100%;
    padding: 0 16px;
    gap: 10px;
  }

  .cmd-brand__text { font-size: 14px; }
  .cmd-cta { display: none; }
  .cmd-utility { margin-left: auto; }
  .nav-toggle { display: inline-flex; }

  .cmd-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 64px;
    display: block;
    padding: min(12vh, 96px) 0 32px;
    overflow-y: auto;
    background: var(--blue-deep);
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: opacity 0.28s var(--ease-out),
                transform 0.28s var(--ease-out),
                visibility 0.28s linear;
  }

  .command-bar[data-open] .cmd-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .cmd-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: min(640px, 88vw);
    margin-inline: auto;
  }

  .cmd-nav__link {
    justify-content: flex-start;
    padding: 18px 4px;
    border-bottom: 1px solid var(--blue-line);
    border-radius: 0;
    font-size: 20px;
    font-weight: 600;
    color: var(--white-cool);
  }

  .cmd-nav__link:hover { background: transparent; }

  .cmd-nav__link[aria-current="page"] {
    background: transparent;
    color: var(--orange-soft);
  }

  .cmd-nav__link[aria-current="page"]::after { display: none; }

  .cmd-nav__index { font-size: 11px; }

  .skip-link:focus { transform: translate(-50%, 0); }

  .section-head { grid-template-columns: 1fr; gap: 6px; }
  .section-head__index { padding-top: 0; }
  .section-head__lead { grid-column: 1; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 46px 0; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .foot-card { grid-column: span 1; }
  .grid-8 { grid-template-columns: 1fr; }
  .grid-8 > *, .col-4, .col-5, .col-6, .col-8 { grid-column: span 1; }
  .breadcrumbs { font-size: 11px; }
}

/* ---------- 13. 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;
  }

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

  .status-lamp__dot { animation: none; }
}