/* ==========================================================================
   江南赛事官方站 shared.css
   Deep Pitch Night / 夜场球场数据台
   ========================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }

/* ---------- Design Tokens ---------- */
:root {
  --bg: #0A0E10;
  --surface: #131A1E;
  --capsule: #1C282D;
  --line: #2B3A40;
  --text: #F2F6F6;
  --text-gray: #A6B3B8;
  --text-dim: #6A7A80;
  --green: #00FF88;
  --green-soft: rgba(0, 255, 136, 0.12);
  --orange: #FF4500;
  --orange-soft: rgba(255, 69, 0, 0.12);
  --font-head: "DIN Condensed", "Roboto Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-data: "Roboto Mono", "Cascadia Mono", "SF Mono", Consolas, monospace;
  --container: 1200px;
  --r-lg: 28px;
  --r-md: 18px;
  --r-sm: 999px;
  --ease: 200ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Base ---------- */
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 80% 40% at 50% -10%, rgba(0, 255, 136, 0.05), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 780px;
  height: 420px;
  background: radial-gradient(ellipse, rgba(0, 255, 136, 0.06), transparent 62%);
  pointer-events: none;
  z-index: 0;
}
main {
  display: block;
  position: relative;
  z-index: 1;
}
::selection { background: var(--green); color: #04100A; }
h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--text);
  line-height: 1.2;
  font-weight: 700;
}
h2 { font-size: 1.75rem; letter-spacing: 0.03em; }
h3 { font-size: 1.125rem; }
p { color: var(--text-gray); }
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Shared Interface ---------- */
.site-title {
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 200;
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--text);
}
.data-label {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.data-value {
  font-family: var(--font-data);
  font-size: 1.375rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}
@media (min-width: 768px) {
  .container { padding-inline: 32px; }
}

/* ---------- Grid ---------- */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- Section / Research Board ---------- */
.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  margin-bottom: 32px;
}
.section__index {
  align-self: flex-end;
  padding-bottom: 6px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.section__index::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  background: var(--green);
  margin-right: 10px;
  vertical-align: middle;
  transform: skewX(-35deg);
}
.section__title { font-size: 1.75rem; font-weight: 700; letter-spacing: 0.04em; }
.section__subtitle { width: 100%; max-width: 640px; color: var(--text-gray); font-size: 0.9375rem; }

/* ---------- Table of Contents ---------- */
.toc {
  display: grid;
  gap: 12px;
  margin: 40px 0;
}
.toc__item {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: border-color var(--ease), transform var(--ease);
}
.toc__item:hover {
  border-color: var(--green);
  transform: translateX(4px);
}
.toc__num {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--green);
}
.toc__title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--text);
}
.toc__desc {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--r-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  border: 1px solid var(--line);
  background: transparent;
  transition: background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--green);
  border-color: var(--green);
  color: #04100A;
  font-weight: 700;
}
.btn--primary:hover {
  background: #c6ffe4;
  border-color: #c6ffe4;
  box-shadow: 0 6px 24px rgba(0, 255, 136, 0.18);
}
.btn--ghost:hover {
  border-color: var(--green);
  color: var(--green);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--r-sm);
  background: var(--capsule);
  color: var(--text-gray);
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.tag::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.tag--green { background: var(--green-soft); color: var(--green); }
.tag--orange { background: var(--orange-soft); color: #ff6b3d; }

/* ---------- Panels ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
}
.panel__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}
.panel__title::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  flex: none;
}
.panel__body {
  margin-top: 12px;
  color: var(--text-gray);
  font-size: 0.9375rem;
  line-height: 1.7;
}
.panel__body p + p { margin-top: 8px; }

/* ---------- Breadcrumb ---------- */
.crumb { margin: 28px 0 0; }
.crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.crumb__item {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-dim);
}
.crumb__item:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--line);
}
.crumb__link { color: var(--text-dim); transition: color var(--ease); }
.crumb__link:hover { color: var(--green); }
.crumb__item[aria-current="page"] { color: var(--text); }

/* ---------- Media Frame ---------- */
.media-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--surface), var(--capsule));
  border: 1px solid var(--line);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 255, 136, 0.05) 1px, transparent 1px),
    linear-gradient(0deg, rgba(0, 255, 136, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at 50% 42%, #000, transparent 86%);
  mask-image: radial-gradient(circle at 50% 42%, #000, transparent 86%);
  pointer-events: none;
}
.media-frame__empty {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  z-index: 1;
}

/* ---------- Header ---------- */
.site-header {
  position: relative;
  z-index: 100;
  background: linear-gradient(180deg, rgba(10, 14, 16, 0.98), rgba(10, 14, 16, 0.94));
  border-bottom: 1px solid var(--line);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-55deg, transparent 0 12px, rgba(255, 255, 255, 0.014) 12px 13px);
  pointer-events: none;
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(0, 255, 136, 0.55) 18%, rgba(0, 255, 136, 0.55) 82%, transparent 100%);
  pointer-events: none;
}
.site-header__inner { position: relative; z-index: 1; }

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 26px 0 16px;
}
.masthead__side {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.masthead__side--left { justify-self: start; }
.masthead__side--right { justify-self: end; }
.masthead__index {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.masthead__center {
  display: flex;
  justify-content: center;
  min-width: 0;
}
.masthead__brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.masthead__brand-cn {
  font-family: var(--font-head);
  font-size: 1.625rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.1;
  color: var(--text);
  transition: color var(--ease);
}
.masthead__brand:hover .masthead__brand-cn { color: var(--green); }
.masthead__subline {
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* Live dot */
.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px rgba(0, 255, 136, 0.7);
  animation: live-pulse 1.8s ease-out infinite;
}
@keyframes live-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.45), 0 0 12px rgba(0, 255, 136, 0.7); }
  70%  { box-shadow: 0 0 0 8px rgba(0, 255, 136, 0), 0 0 12px rgba(0, 255, 136, 0.7); }
  100% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0), 0 0 12px rgba(0, 255, 136, 0.7); }
}
.live-dot__label {
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}

/* Nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 12px 11px;
  background: var(--capsule);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color var(--ease), background var(--ease);
}
.nav-toggle:hover { border-color: var(--green); }
.nav-toggle__line {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform var(--ease), opacity var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Nav */
.site-nav {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 6px;
  margin-bottom: 18px;
}
.site-nav__list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2px;
}
.site-nav__list a {
  display: block;
  padding: 9px 20px;
  border-radius: var(--r-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-gray);
  white-space: nowrap;
  transition: color var(--ease), background var(--ease);
}
.site-nav__list a:hover { color: var(--text); background: var(--capsule); }
.site-nav__list a[aria-current="page"] {
  background: var(--green);
  color: #04100a;
  font-weight: 700;
}

/* ---------- Skip Link / Progress ---------- */
.site-skip {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2000;
  background: var(--green);
  color: #04100a;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 0 0 14px 14px;
  transition: top 180ms ease;
}
.site-skip:focus-visible { top: 0; }
.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--green), #c8ffe6);
  box-shadow: 0 0 14px rgba(0, 255, 136, 0.45);
  z-index: 1500;
  pointer-events: none;
}

/* ---------- Reveal ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 420ms ease, transform 420ms ease;
}
.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border-top: 1px solid var(--line);
  margin-top: 96px;
  padding: 56px 0 28px;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 220px;
  height: 3px;
  background: linear-gradient(90deg, var(--green), rgba(0, 255, 136, 0));
}
.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-55deg, transparent 0 18px, rgba(255, 255, 255, 0.01) 18px 19px);
  pointer-events: none;
}
.site-footer__glow {
  position: absolute;
  right: -100px;
  bottom: -100px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.07), transparent 65%);
  pointer-events: none;
}
.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr; gap: 48px; }
}
.footer-brand__name {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--text);
}
.footer-brand__desc,
.footer-brand__trust {
  margin-top: 14px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--text-gray);
}
.footer-brand__trust {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--green);
  color: var(--text-dim);
}
.footer-links__title,
.footer-contact__title {
  margin-bottom: 18px;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--green);
}
.footer-links__list { display: flex; flex-direction: column; gap: 10px; }
.footer-links__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-gray);
  font-size: 0.875rem;
  transition: color var(--ease), transform var(--ease);
}
.footer-links__list a::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: background var(--ease);
}
.footer-links__list a:hover {
  color: var(--green);
  transform: translateX(2px);
}
.footer-links__list a:hover::before { background: var(--green); }
.footer-contact__item {
  color: var(--text-gray);
  font-family: var(--font-data);
  font-size: 0.875rem;
  line-height: 1.9;
  font-variant-numeric: tabular-nums;
}
.footer-contact__hours {
  margin-top: 14px;
  color: var(--text-dim);
  font-family: var(--font-data);
  font-size: 0.6875rem;
}
.footer-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: 0.6875rem;
  color: var(--text-dim);
}
.footer-bottom__copy { display: inline-flex; gap: 6px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) and (min-width: 769px) {
  .site-nav__list {
    flex-wrap: wrap;
    row-gap: 4px;
  }
  .site-nav__list a {
    padding: 8px 14px;
    font-size: 0.8125rem;
  }
}
@media (max-width: 768px) {
  .masthead {
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 18px 0 14px;
  }
  .masthead__side--left { display: none; }
  .masthead__center { justify-self: start; }
  .masthead__brand { align-items: flex-start; }
  .masthead__brand-cn { font-size: 1.25rem; letter-spacing: 0.08em; }
  .masthead__subline { font-size: 0.5625rem; }
  .live-dot__label { display: none; }
  .nav-toggle { display: inline-flex; flex: none; }
  .site-nav {
    display: none;
    margin-bottom: 14px;
  }
  .site-nav[data-open] {
    display: block;
    animation: nav-in 200ms var(--ease);
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
  }
  .site-nav__list a {
    text-align: center;
    padding: 13px 16px;
    font-size: 0.9375rem;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Motion ---------- */
@keyframes nav-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: none; }
}
@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;
  }
  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .site-skip { transition: none; }
}