/* =========================================================
   三亿体育 · 共享站点样式 /assets/site.css
   深夜球场数据实验室：墨蓝底、荧光青信号、橙色行动点
   ========================================================= */

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

/* ---------- Tokens ---------- */
:root {
  --ink-950: #061426;
  --ink-900: #0E2440;
  --ink-850: #112A4A;
  --ink-800: #16324F;
  --paper: #F4EFE2;
  --paper-soft: #FBF7EC;
  --press: #1A1410;
  --cyan: #35F2D0;
  --orange: #FF6A2B;
  --grass-900: #0B5B3C;
  --grass-500: #1FA36B;
  --red: #C8341F;
  --mist: #7E93A8;

  --line-cool: rgba(126, 147, 168, 0.24);
  --line-cyan: rgba(53, 242, 208, 0.22);
  --line-paper: rgba(244, 239, 226, 0.16);

  --font-display: "Arial Narrow", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --wrap: 1360px;
  --gutter: clamp(16px, 4vw, 44px);
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);

  --text-strong: rgba(244, 239, 226, 0.94);
  --text-body: rgba(244, 239, 226, 0.78);
  --text-quiet: rgba(244, 239, 226, 0.56);
}

/* ---------- Base ---------- */
body {
  background: var(--ink-950);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--paper);
}
h1 { font-size: clamp(40px, 6.6vw, 96px); letter-spacing: -0.01em; }
h2 { font-size: clamp(30px, 4.2vw, 48px); }
h3 { font-size: clamp(20px, 2.2vw, 24px); }

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 0;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 120;
  padding: 12px 18px;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; }

/* =========================================================
   HEADER
   ========================================================= */
.masthead {
  position: sticky;
  top: 0;
  z-index: 80;
  background:
    linear-gradient(180deg, rgba(6, 20, 38, 0.98), rgba(6, 20, 38, 0.94)),
    radial-gradient(140% 200% at 88% -60%, rgba(53, 242, 208, 0.18), rgba(6, 20, 38, 0) 62%);
  border-bottom: 1px solid var(--line-cyan);
  backdrop-filter: blur(8px);
}
.masthead::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: clamp(60px, 12vw, 180px);
  height: 4px;
  background: var(--orange);
  transform: skewX(-32deg);
  transform-origin: 100% 0;
  pointer-events: none;
}

.masthead__inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* --- 品牌署名块 --- */
.masthead__brand { min-width: 0; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand__flag {
  width: 9px;
  height: 22px;
  background: var(--orange);
  transform: skewX(-14deg);
  flex: none;
}
.brand__mark {
  font-family: var(--font-display);
  font-stretch: condensed;
  font-size: clamp(20px, 2.1vw, 26px);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
  line-height: 1.1;
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  border: 1px solid rgba(53, 242, 208, 0.42);
  padding: 2px 6px;
  line-height: 1.2;
}
.brand__line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.brand__tagline { color: var(--text-quiet); }
.brand__meta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--mist);
}
.brand__meta::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--grass-500);
  box-shadow: 0 0 0 2px rgba(31, 163, 107, 0.18);
}

/* --- 右端栏目矩阵 --- */
.masthead__rail {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.2vw, 30px);
}

.round-readout {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 11px;
  border: 1px solid var(--line-cool);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}
.round-readout__key { color: var(--mist); }
.round-readout__val { color: var(--paper); font-weight: 700; }
.round-readout__bar {
  position: relative;
  display: block;
  width: 44px;
  height: 3px;
  background: rgba(126, 147, 168, 0.32);
}
.round-readout__bar i {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 38%;
  background: var(--orange);
}

.nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
}
.nav__link {
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-height: 44px;
  padding: 10px 11px;
  font-size: 14.5px;
  color: var(--text-body);
  border: 1px solid transparent;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mist);
  transition: color 0.18s var(--ease);
}
.nav__label { white-space: nowrap; }
.nav__link:hover {
  background: var(--ink-850);
  border-color: rgba(53, 242, 208, 0.34);
  color: var(--paper);
}
.nav__link:hover .nav__idx { color: var(--orange); }
.nav__link[aria-current="page"] {
  background: var(--ink-900);
  border-color: rgba(53, 242, 208, 0.34);
  color: var(--cyan);
}
.nav__link[aria-current="page"] .nav__idx { color: var(--orange); }

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

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  font-family: var(--font-display);
  font-stretch: condensed;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  border-radius: 0;
  white-space: nowrap;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn--solid { background: var(--orange); color: #1A0D06; }
.btn--solid:hover { background: #FF8149; }
.btn--line { border-color: rgba(244, 239, 226, 0.3); color: var(--paper); }
.btn--line:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(53, 242, 208, 0.08); }
.btn--quiet { color: var(--cyan); padding: 0 10px; }
.btn--quiet:hover { background: rgba(53, 242, 208, 0.12); }

/* --- 移动端开关 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid rgba(244, 239, 226, 0.3);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-toggle__box { display: grid; gap: 4px; width: 18px; }
.nav-toggle__box span {
  display: block;
  height: 2px;
  background: var(--cyan);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}
.nav-toggle[aria-expanded="true"] { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:first-child { transform: translateY(3px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* --- 滚动进度 --- */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.08s linear;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-foot {
  margin-top: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, #04101F 0%, var(--ink-950) 70%);
  border-top: 1px solid var(--line-cyan);
  color: var(--text-body);
}
.site-foot__inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 72px) var(--gutter) 28px;
}
.foot-grid {
  display: grid;
  grid-template-columns: minmax(280px, 1.6fr) repeat(4, minmax(120px, 1fr));
  gap: clamp(24px, 3vw, 44px);
  align-items: start;
}
.brand--foot { margin-bottom: 14px; }
.foot-brand__tagline {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  margin-bottom: 20px;
}
.foot-contact { display: grid; gap: 10px; }
.foot-contact__row {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
}
.foot-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  padding-top: 2px;
}
.foot-contact__val { color: var(--text-body); word-break: break-word; }

.foot-col__head {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-cool);
}
.foot-col__list { display: grid; gap: 10px; }
.foot-col__link {
  display: inline-block;
  font-size: 15px;
  color: rgba(244, 239, 226, 0.76);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.foot-col__link:hover { color: var(--cyan); border-bottom-color: rgba(53, 242, 208, 0.5); }

.foot-legal {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: 18px;
  border-top: 1px solid var(--line-cool);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* =========================================================
   LAYOUT UTILITIES
   ========================================================= */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.section {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}
.rule { height: 1px; background: var(--line-cool); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
  flex: none;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 32px;
  padding-bottom: 22px;
  margin-bottom: clamp(22px, 3vw, 36px);
  border-bottom: 1px solid var(--line-cool);
}
.section-head__title { max-width: 22ch; }
.section-head__note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  max-width: 42ch;
}

/* ---------- Grid ---------- */
.grid { display: grid; gap: clamp(14px, 1.8vw, 22px); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

/* ---------- Panel (Bento 卡片) ---------- */
.panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--ink-900);
  border: 1px solid var(--line-cool);
  color: var(--text-body);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}
.panel:hover { background: var(--ink-850); border-color: var(--line-cyan); }
.panel--paper {
  background: var(--paper);
  color: rgba(26, 20, 16, 0.78);
  border-color: transparent;
}
.panel--paper:hover { background: var(--paper-soft); border-color: rgba(26, 20, 16, 0.14); }
.panel--paper .panel__title { color: var(--press); }
.panel--paper .panel__meta { color: rgba(26, 20, 16, 0.55); }
.panel--edge { border-left: 3px solid var(--orange); }
.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
}
.panel__title {
  font-family: var(--font-display);
  font-stretch: condensed;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.panel__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.panel__body { font-size: 16px; line-height: 1.72; color: var(--text-body); }
.panel--paper .panel__body { color: rgba(26, 20, 16, 0.78); }
.panel a.panel__title:hover { color: var(--cyan); }

/* ---------- Stat / Tag ---------- */
.stat { display: grid; gap: 6px; }
.stat__num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 120px);
  line-height: 0.86;
  letter-spacing: -0.03em;
  color: var(--cyan);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.4;
  border: 1px solid var(--line-cool);
  color: var(--mist);
}
.tag--cyan { background: var(--cyan); color: var(--ink-950); border-color: var(--cyan); }
.tag--orange { background: var(--orange); color: #1A0D06; border-color: var(--orange); }
.tag--red { color: var(--red); border-color: rgba(200, 52, 31, 0.5); }
.tag--grass { color: var(--grass-500); border-color: rgba(31, 163, 107, 0.5); }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.breadcrumb__sep { color: rgba(126, 147, 168, 0.6); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

/* ---------- Prose ---------- */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--text-body);
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 1.6em; font-size: clamp(26px, 3vw, 34px); }
.prose h3 { margin-top: 1.4em; }
.prose ul li {
  position: relative;
  padding-left: 20px;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--orange);
}
.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(53, 242, 208, 0.42);
}
.prose a:hover { border-bottom-color: var(--cyan); }
.prose strong { color: var(--paper); }

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  display: grid;
  gap: clamp(16px, 2vw, 26px);
  padding-left: 30px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 242, 208, 0.12));
}
.timeline__item { position: relative; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 13px;
  width: 15px;
  height: 15px;
  background: var(--ink-950);
  border: 1px solid var(--cyan);
}
.timeline__item--past::before { background: var(--mist); border-color: var(--mist); }
.timeline__item--live::before { background: var(--orange); border-color: var(--orange); }
.timeline__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
  margin-bottom: 4px;
}

/* ---------- Media (图片容器基础规则) ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--ink-900) 0%, #0A1B31 60%, var(--grass-900) 140%);
  border: 1px solid var(--line-cool);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(126, 147, 168, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 147, 168, 0.09) 1px, transparent 1px);
  background-size: 34px 34px;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }
.media__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media__badge {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 5px 10px;
  background: var(--orange);
  color: #1A0D06;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}
.media__caption {
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.18s linear;
}
[data-reveal].is-revealed { opacity: 1; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1279px) {
  .round-readout { display: none; }
}

@media (max-width: 1100px) {
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-brand { grid-column: 1 / -1; }
}

@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }
  .masthead__inner { flex-wrap: wrap; align-items: center; }
  .masthead__brand { flex: 1 1 auto; min-width: 0; }
  .masthead__rail {
    flex: 1 1 100%;
    order: 3;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: 14px;
    padding-top: 8px;
    border-top: 1px solid var(--line-cyan);
  }
  .masthead[data-open="true"] .masthead__rail { display: flex; }
  .round-readout { display: flex; justify-content: space-between; margin-bottom: 8px; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__item { width: 100%; }
  .nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 13px 10px;
    border-left: 2px solid transparent;
    border-bottom: 1px solid rgba(126, 147, 168, 0.16);
  }
  .nav__link[aria-current="page"] { border-left-color: var(--cyan); }
  .rail__actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 16px 0 6px;
  }
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-1, .col-2, .col-3 { grid-column: span 2; }
  .col-4, .col-5, .col-6 { grid-column: span 3; }
  .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 { grid-column: span 6; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .masthead__inner { padding: 12px var(--gutter); gap: 12px; }
  .brand__line { gap: 4px 10px; font-size: 10px; }
  .rail__actions { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .foot-contact__row { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .grid--12 { grid-template-columns: minmax(0, 1fr); }
  .grid--12 > [class*="col-"] { grid-column: auto; }
  .timeline { padding-left: 24px; }
  .timeline__item::before { left: -24px; width: 12px; height: 12px; top: 14px; }
  .foot-legal { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; }
  .scroll-progress { transition: none; }
}