/* =========================================================
   /assets/site.css — 尚牛竞猜 共享外壳
   深墨黑 / 炭灰 / 电光青 / 荧光橙
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, picture, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #06080A;
  --charcoal: #11161A;
  --graphite: #1A2228;
  --steel: #2A353D;
  --silver: #9BA8B2;
  --fog: #E6EDF0;
  --cyan: #2DE2E6;
  --deep-cyan: #0E6F73;
  --orange: #FF6A1A;
  --amber: #B84A12;

  --line: rgba(42, 53, 61, 0.95);
  --line-soft: rgba(155, 168, 178, 0.16);
  --cyan-soft: rgba(45, 226, 230, 0.10);
  --orange-soft: rgba(255, 106, 26, 0.12);

  --font-display: 'Archivo Narrow', 'Roboto Condensed', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 44px);
  --radius-a: 16px;
  --radius-b: 4px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--fog);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(180deg, rgba(155, 168, 178, 0.028) 0 1px, transparent 1px 4px);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1000px 620px at 78% -12%, rgba(45, 226, 230, 0.09), transparent 70%),
    radial-gradient(760px 520px at -8% 104%, rgba(255, 106, 26, 0.055), transparent 72%);
}

main { position: relative; z-index: 1; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--fog);
  text-wrap: balance;
}
h1 { font-size: clamp(2.6rem, 7vw, 5.4rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.3; }
h4 { font-size: 1.05rem; line-height: 1.4; }

p { max-width: 40em; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.82em;
  letter-spacing: 0.1em;
  color: var(--silver);
}

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

.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -160%);
  padding: 11px 20px;
  font-size: 13px;
  font-weight: 700;
  color: #04191A;
  background: var(--cyan);
  border-radius: 0 0 10px 10px;
  transition: transform 0.22s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 4. 布局容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid { display: grid; gap: clamp(16px, 2vw, 24px); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.section { position: relative; padding-block: clamp(44px, 6vw, 88px); }
.section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: clamp(16px, 3vw, 48px);
  align-items: end;
  margin-bottom: clamp(24px, 3vw, 40px);
}
.section-title { font-size: clamp(1.8rem, 3.6vw, 2.9rem); }
.section-lead { font-size: 16.5px; line-height: 1.75; color: var(--silver); max-width: 36em; }

.rule { height: 1px; border: 0; margin: 0; background: var(--line-soft); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}
.eyebrow::before {
  content: "";
  display: block;
  width: 22px;
  height: 1px;
  background: currentColor;
}
.eyebrow--accent { color: var(--cyan); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: 10px var(--radius-b) 10px var(--radius-b);
  cursor: pointer;
  transition: background 0.22s var(--ease), color 0.22s var(--ease),
              border-color 0.22s var(--ease), transform 0.22s var(--ease),
              box-shadow 0.22s var(--ease);
}
.btn--primary {
  color: #04191A;
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 12px 28px -18px rgba(45, 226, 230, 0.95);
}
.btn--primary:hover { background: #7FF2F4; border-color: #7FF2F4; transform: translateY(-1px); }
.btn--ghost {
  color: var(--fog);
  background: rgba(26, 34, 40, 0.65);
  border-color: var(--steel);
}
.btn--ghost:hover { color: var(--cyan); border-color: var(--cyan); }
.btn--orange {
  color: #1A0A02;
  background: var(--orange);
  border-color: var(--orange);
}
.btn--orange:hover { background: #FF8A47; border-color: #FF8A47; transform: translateY(-1px); }
.btn--compact { padding: 9px 15px; font-size: 13.5px; }
.btn--block { width: 100%; }

/* ---------- 6. 标签与状态 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--silver);
  background: rgba(26, 34, 40, 0.7);
  border: 1px solid var(--line);
  border-radius: 3px 9px 3px 9px;
}
.tag--cyan { color: var(--cyan); border-color: rgba(45, 226, 230, 0.45); background: var(--cyan-soft); }
.tag--orange { color: var(--orange); border-color: rgba(255, 106, 26, 0.45); background: var(--orange-soft); }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 13px 5px 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--fog);
  background: rgba(26, 34, 40, 0.9);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.status-pill::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  flex: none;
}
.status-pill--live::before { background: var(--orange); box-shadow: 0 0 10px var(--orange); }

/* ---------- 7. 卡片 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.2vw, 26px);
  background: linear-gradient(160deg, rgba(26, 34, 40, 0.96), rgba(17, 22, 26, 0.92));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-a) var(--radius-b) var(--radius-a) var(--radius-b);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.card:hover { border-color: rgba(45, 226, 230, 0.45); transform: translateY(-3px); }
.card__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--silver);
}
.card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.3;
  color: var(--fog);
}
.card__text { font-size: 15.5px; line-height: 1.72; color: var(--silver); }
.card--accent { border-left: 2px solid var(--cyan); }

/* ---------- 8. 表格 ---------- */
.data-table__wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-a) var(--radius-b) var(--radius-a) var(--radius-b);
  background: rgba(17, 22, 26, 0.7);
}
.data-table { font-size: 15px; min-width: 560px; }
.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}
.data-table thead th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver);
  background: rgba(26, 34, 40, 0.85);
}
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: rgba(45, 226, 230, 0.05); }
.data-table th.num,
.data-table td.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--fog);
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs {
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--silver);
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before { content: "/"; color: var(--steel); }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--fog); }

/* ---------- 10. 正文容器 ---------- */
.prose { max-width: 70ch; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { margin-top: 2.1em; font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
.prose h3 { margin-top: 1.7em; }
.prose p { color: #C9D4DA; }
.prose ul, .prose ol { padding-left: 1.3em; list-style: revert; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--fog); }
.prose blockquote {
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
  color: var(--silver);
}

/* ---------- 11. 图片容器（页面阶段放置图片用） ---------- */
.media-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(155deg, var(--graphite), var(--ink));
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-a) var(--radius-b) var(--radius-a) var(--radius-b);
}
.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(155, 168, 178, 0.05) 0 2px, transparent 2px 10px);
  pointer-events: none;
}
.media-frame img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

/* ---------- 12. 显现动效协议 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}
html.js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 13. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(6, 8, 10, 0.94);
  border-bottom: 1px solid var(--line);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.site-header[data-scrolled="true"] {
  background: rgba(6, 8, 10, 0.985);
  box-shadow: 0 20px 44px -32px rgba(0, 0, 0, 0.95);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  z-index: 5;
  pointer-events: none;
  background: transparent;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  box-shadow: 0 0 10px rgba(45, 226, 230, 0.75);
}

.status-strip {
  background: linear-gradient(90deg, rgba(14, 111, 115, 0.55), rgba(17, 22, 26, 0.92) 55%, rgba(6, 8, 10, 0.96));
  border-bottom: 1px solid rgba(42, 53, 61, 0.7);
}
.status-strip__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 6px var(--gutter);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver);
}
.status-strip__dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(45, 226, 230, 0.15);
}
.status-strip__text { color: #B9C6CE; letter-spacing: 0.1em; }
.status-strip__meta { margin-left: auto; color: rgba(155, 168, 178, 0.6); }

.command-bar__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: var(--wrap);
  min-height: 68px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  transition: min-height 0.25s var(--ease);
}
.site-header[data-scrolled="true"] .command-bar__inner { min-height: 58px; }

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  color: #04191A;
  background: var(--cyan);
  border-radius: 10px 2px 10px 2px;
  box-shadow: 0 0 0 1px rgba(45, 226, 230, 0.35), 0 10px 26px -16px rgba(45, 226, 230, 0.95);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  font-stretch: condensed;
  letter-spacing: 0.06em;
  color: var(--fog);
}
.brand__line {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--silver);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fog);
  background: rgba(26, 34, 40, 0.9);
  border: 1px solid var(--steel);
  border-radius: 8px;
}
.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--cyan);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) 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(-5px) rotate(-45deg); }

.site-nav { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.site-nav__list { display: flex; align-items: center; gap: 2px; }
.site-nav__item { display: block; }
.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 11px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--silver);
  border-radius: 6px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.site-nav__link:hover { color: var(--fog); background: rgba(45, 226, 230, 0.07); }
.site-nav__link[aria-current="page"] { color: var(--fog); }
.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 1px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(45, 226, 230, 0.8);
}
.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(155, 168, 178, 0.55);
}
.site-nav__link[aria-current="page"] .nav-index { color: var(--cyan); }
.nav-label { display: inline-block; letter-spacing: 0.01em; }

.site-nav__foot { display: none; }
.command-bar__actions { display: flex; align-items: center; gap: 10px; flex: none; }

/* ---------- 14. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--ink);
  border-top: 1px solid var(--line);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.35fr);
  gap: clamp(28px, 5vw, 64px);
  padding-block: clamp(40px, 6vw, 72px) clamp(26px, 4vw, 44px);
}
.footer-brand__eyebrow {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}
.footer-brand__word {
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.2vw, 3.9rem);
  font-weight: 900;
  font-stretch: condensed;
  line-height: 0.95;
  letter-spacing: -0.01em;
  color: var(--fog);
}
.footer-brand__line { font-size: 14.5px; line-height: 1.72; color: var(--silver); max-width: 24em; }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 36px);
}
.footer-col { min-width: 0; }
.footer-col__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}
.footer-list li + li { margin-top: 9px; }
.footer-list a {
  font-size: 14.5px;
  color: #B7C3CA;
  transition: color 0.2s var(--ease);
}
.footer-list a:hover { color: var(--cyan); }
.footer-list__meta {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--silver);
  overflow-wrap: anywhere;
}
.footer-list__meta .mono {
  display: inline-block;
  margin-right: 8px;
  color: rgba(155, 168, 178, 0.6);
}
.footer-col--contact .footer-col__title { color: var(--fog); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  padding-block: 20px 28px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: rgba(155, 168, 178, 0.8);
}
.footer-bottom__copy { max-width: none; }
.footer-bottom__icp { max-width: none; color: rgba(155, 168, 178, 0.62); }

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .site-nav { gap: 10px; }
  .site-nav__link { padding: 9px 8px; font-size: 14px; }
  .site-nav__link[aria-current="page"]::after { left: 8px; right: 8px; }
  .brand__line { display: none; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .command-bar__actions { display: none; }
  .brand__line { display: block; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 10px var(--gutter) 22px;
    max-height: calc(100dvh - 108px);
    overflow-y: auto;
    background: rgba(17, 22, 26, 0.99);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 34px 64px -34px rgba(0, 0, 0, 0.95);
  }
  .site-nav[data-open] { display: flex; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .site-nav__item { width: 100%; }
  .site-nav__link {
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px solid rgba(42, 53, 61, 0.55);
    border-radius: 8px;
  }
  .site-nav__link[aria-current="page"] { background: rgba(45, 226, 230, 0.08); }
  .site-nav__link[aria-current="page"]::after {
    left: 0;
    right: auto;
    top: 12px;
    bottom: 12px;
    width: 3px;
    height: auto;
  }
  .nav-index { font-size: 11px; }
  .site-nav__foot { display: flex; margin-top: 16px; }

  .status-strip__meta { display: none; }

  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .section__head { grid-template-columns: minmax(0, 1fr); align-items: start; }
}

@media (max-width: 980px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .status-strip__inner { font-size: 10px; letter-spacing: 0.1em; }
  .brand__name { font-size: 17px; }
  .nav-toggle__label { display: none; }
  .footer-bottom { justify-content: flex-start; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

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