/* =========================================================
   开云看台 — 全站共享样式 /assets/site.css
   夜赛转播间 × 战术板 视觉系统
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --night: #0B1B2B;
  --deep: #12293A;
  --turf: #2F9E5E;
  --turf-deep: #1E6F42;
  --paper: #F4F1E8;
  --paper-line: #E2DCCC;
  --card-red: #E2453C;
  --card-yellow: #F2C230;
  --cyan: #7FE3C4;
  --ink-text: #15191E;
  --mist: #8FA0AE;

  --turf-glow: rgba(47, 158, 94, .18);
  --hairline: rgba(143, 160, 174, .22);
  --hairline-strong: rgba(143, 160, 174, .38);

  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell-max: 1240px;
  --shell-pad: clamp(18px, 4vw, 40px);
  --stack-gap: clamp(20px, 3vw, 36px);

  --ease-out: cubic-bezier(.22, .61, .36, 1);
  --dur-fast: 160ms;
  --dur-base: 260ms;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--night);
  background-image:
    radial-gradient(1200px 620px at 12% -12%, rgba(47, 158, 94, .14), transparent 62%),
    radial-gradient(920px 520px at 102% 0%, rgba(127, 227, 196, .07), transparent 58%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
strong, b { font-weight: 700; }

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

/* ---------- 3. 容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

/* ---------- 4. 索引与标记 ---------- */
.mono-tag {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .08em;
  color: var(--mist);
  white-space: nowrap;
}

.mono-tag--live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
}

.live-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--card-red);
  box-shadow: 0 0 0 3px rgba(226, 69, 60, .18);
  animation: pulse-live 2.4s var(--ease-out) infinite;
}

@keyframes pulse-live {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .4; transform: scale(.78); }
}

/* ---------- 5. 跳至正文 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 200;
  padding: 11px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-text);
  background: var(--card-yellow);
  transform: translate(-50%, -130%);
  transition: transform var(--dur-fast) var(--ease-out);
  border-radius: 0 0 4px 4px;
}

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

/* ---------- 6. 品牌标识 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  transition: transform var(--dur-fast) var(--ease-out);
}

.brand__glyph {
  display: grid;
  place-items: center;
  width: clamp(40px, 5vw, 54px);
  aspect-ratio: 1 / 1;
  background: var(--turf);
  color: var(--night);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 74% 100%, 0 100%);
  transition: background-color var(--dur-fast) var(--ease-out);
}

.brand__word {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 72px);
  letter-spacing: .05em;
  line-height: .95;
  color: var(--paper);
}

.brand:hover .brand__glyph { background: var(--cyan); }

.brand--compact .brand__glyph {
  width: 34px;
  font-size: 17px;
}

.brand--compact .brand__word {
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: .04em;
}

/* ---------- 7. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, var(--night) 0%, rgba(11, 27, 43, .96) 100%);
  border-bottom: 1px solid var(--hairline);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(620px 170px at 50% -50%, var(--turf-glow), transparent 72%);
}

.header-rail {
  position: relative;
  overflow: hidden;
  max-height: 80px;
  background: rgba(18, 41, 58, .55);
  border-bottom: 1px solid var(--hairline);
  transition: max-height var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out);
}

.header-rail__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 20px;
  padding-block: 9px;
}

.masthead {
  position: relative;
  overflow: hidden;
  max-height: 320px;
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 12px;
  padding-block: clamp(22px, 3.4vw, 42px);
  transition: max-height var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out),
              padding var(--dur-base) var(--ease-out);
}

.masthead__index {
  letter-spacing: .18em;
  color: var(--mist);
}

.masthead__claim {
  max-width: 52ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--mist);
}

.site-header[data-condensed="true"] .header-rail,
.site-header[data-condensed="true"] .masthead {
  max-height: 0;
  opacity: 0;
  padding-block: 0;
}

/* ---------- 8. 比分牌式栏目条 ---------- */
.board-nav {
  position: relative;
  border-top: 1px solid var(--hairline);
  background: linear-gradient(180deg, rgba(18, 41, 58, .92), rgba(18, 41, 58, .58));
}

.board-nav__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0 12px;
}

.board-nav__list {
  display: flex;
  flex: 1 1 auto;
  align-items: stretch;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.board-nav__list::-webkit-scrollbar { display: none; }

.board-nav__item { display: flex; flex: 0 0 auto; }

.board-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 15px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--mist);
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-out);
}

.board-nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 3px;
  background: var(--turf);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-base) var(--ease-out);
}

.board-nav__link:hover { color: var(--paper); }
.board-nav__link:hover::after { transform: scaleX(.42); }

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

.board-nav__cta {
  align-self: center;
  flex: 0 0 auto;
  margin-left: auto;
  padding: 11px 22px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--night);
  background: var(--turf);
  white-space: nowrap;
  clip-path: polygon(11px 0, 100% 0, 100% calc(100% - 11px), calc(100% - 11px) 100%, 0 100%, 0 11px);
  transition: background-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.board-nav__cta:hover {
  background: var(--cyan);
  transform: translateY(-1px);
}

.board-nav__cta:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -5px;
}

.board-nav__toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--paper);
}

.board-nav__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 20px;
  height: 14px;
}

.board-nav__bars i {
  display: block;
  height: 2px;
  background: var(--turf);
  transition: transform var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

.board-nav__label { letter-spacing: .06em; }

/* ---------- 9. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: var(--deep);
  color: var(--mist);
  border-top: 3px solid var(--turf);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(760px 260px at 88% 0%, rgba(47, 158, 94, .10), transparent 70%);
}

.footer-shell {
  position: relative;
  padding-block: clamp(32px, 5vw, 56px) clamp(22px, 3vw, 34px);
}

.footer-rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 3.5vw, 40px);
  border-bottom: 1px solid var(--hairline);
}

.footer-rail__clock { color: var(--turf); }

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: clamp(24px, 4vw, 48px);
}

.footer-col { min-width: 0; }

.footer-col__title {
  margin-bottom: 15px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--cyan);
}

.footer-col__lead {
  margin-top: 18px;
  max-width: 32ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.footer-list {
  display: grid;
  gap: 10px;
}

.footer-list a {
  font-size: 15px;
  color: var(--mist);
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-list a:hover { color: var(--cyan); }

.footer-list--plain li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  word-break: break-word;
}

.footer-key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--turf);
  padding-top: 3px;
}

.footer-note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(143, 160, 174, .8);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
}

.footer-base__copy {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
  color: var(--mist);
}

.footer-base__links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 13.5px;
}

.footer-base__links a {
  color: var(--mist);
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-base__links a:hover { color: var(--cyan); }

/* ---------- 10. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--night);
  background: var(--turf);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: background-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}

.btn:hover {
  background: var(--cyan);
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -5px;
}

.btn--ghost {
  clip-path: none;
  border-radius: 999px;
  color: var(--paper);
  background: transparent;
  box-shadow: inset 0 0 0 1.5px var(--hairline-strong);
}

.btn--ghost:hover {
  background: rgba(47, 158, 94, .14);
  color: var(--cyan);
  box-shadow: inset 0 0 0 1.5px var(--turf);
}

.btn--alert {
  background: var(--card-red);
  color: #FFFFFF;
}

.btn--alert:hover { background: #F0594F; }

/* ---------- 11. 堆叠面板 ---------- */
.panel {
  position: relative;
  padding: clamp(24px, 3.4vw, 40px);
  background: var(--deep);
  color: var(--paper);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.panel--light {
  background: var(--paper);
  color: var(--ink-text);
}

.panel--light h2,
.panel--light h3,
.panel--light h4 { color: var(--ink-text); }

.panel--outline {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--hairline-strong);
}

/* ---------- 12. 状态标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--cyan);
  background: rgba(127, 227, 196, .13);
  border: 1px solid rgba(127, 227, 196, .28);
  border-radius: 2px;
  transition: background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.tag--warn {
  color: var(--card-yellow);
  background: rgba(242, 194, 48, .14);
  border-color: rgba(242, 194, 48, .34);
}

.tag--alert {
  color: #FF8E87;
  background: rgba(226, 69, 60, .16);
  border-color: rgba(226, 69, 60, .34);
}

.tag--mute {
  color: var(--mist);
  background: rgba(143, 160, 174, .12);
  border-color: var(--hairline);
}

/* ---------- 13. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

.breadcrumb a { transition: color var(--dur-fast) var(--ease-out); }
.breadcrumb a:hover { color: var(--cyan); }

.breadcrumb__sep { color: rgba(143, 160, 174, .5); }

.breadcrumb [aria-current="page"] { color: var(--paper); }

/* ---------- 14. 正文容器 ---------- */
.prose {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.78;
}

.prose h2 {
  margin-top: 1.8em;
  margin-bottom: .6em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: .01em;
}

.prose h3 {
  margin-top: 1.5em;
  margin-bottom: .5em;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
}

.prose p + p { margin-top: 1.05em; }
.prose ul, .prose ol { margin-top: 1em; padding-left: 1.2em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .45em; }

/* ---------- 15. 网格 ---------- */
.grid {
  display: grid;
  gap: var(--stack-gap);
}

.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)); }
.grid--timeline { grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); }

/* ---------- 16. 时间轴 ---------- */
.timeline {
  position: relative;
  display: grid;
  gap: 22px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--hairline-strong) 10%, var(--hairline-strong) 90%, transparent);
}

.timeline__item {
  position: relative;
  padding-left: 32px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 15px;
  height: 15px;
  background: var(--night);
  border: 2px solid var(--turf);
  transform: rotate(45deg);
  transition: background-color var(--dur-fast) var(--ease-out);
}

.timeline__item:hover::before { background: var(--turf); }

/* ---------- 17. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(47, 158, 94, .18), rgba(11, 27, 43, .62)),
    var(--deep);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease-out);
}

.media:hover img { transform: scale(1.04); }

.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }

.media__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 18. 滚动显现 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 520ms var(--ease-out) var(--reveal-delay, 0ms),
    transform 520ms var(--ease-out) var(--reveal-delay, 0ms);
}

.has-js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col:last-child { grid-column: 1 / -1; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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

@media (max-width: 880px) {
  .board-nav__inner {
    padding-block: 4px;
    gap: 0;
  }

  .board-nav__list {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    padding-bottom: 12px;
  }

  .board-nav[data-open="true"] .board-nav__list { display: flex; }

  .board-nav__item { width: 100%; }

  .board-nav__link {
    width: 100%;
    padding: 14px 2px;
    font-size: 15.5px;
    border-bottom: 1px solid var(--hairline);
  }

  .board-nav__link::after {
    left: 0;
    right: auto;
    width: 26px;
  }

  .board-nav__toggle { display: inline-flex; }

  .board-nav[data-open="true"] .board-nav__bars i:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .board-nav[data-open="true"] .board-nav__bars i:nth-child(2) {
    opacity: 0;
  }
  .board-nav[data-open="true"] .board-nav__bars i:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  body { font-size: 16.5px; }

  .mono-tag { font-size: 11.5px; letter-spacing: .06em; }

  .masthead { gap: 10px; padding-block: 20px; }
  .masthead__claim { font-size: 14.5px; }

  .brand { gap: 10px; }
  .brand__word { letter-spacing: .03em; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-col:last-child { grid-column: auto; }

  .footer-base { flex-direction: column; align-items: flex-start; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }

  .media { clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
}

/* ---------- 20. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .has-js [data-reveal],
  .has-js [data-reveal].is-revealed {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .site-header[data-condensed="true"] .header-rail,
  .site-header[data-condensed="true"] .masthead {
    max-height: none;
    opacity: 1;
  }
}