/* ============================================================
   百博赛场 · 共享样式 /assets/site.css
   深夜墨绿底 + 蓝图网格 + 荧光青状态 + 赛道橙提醒
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --ink-950: #05100E;
  --ink-900: #071A16;
  --ink-800: #0E2B24;
  --moss: #4F6F5A;
  --cyan: #39FFD0;
  --cyan-soft: rgba(57, 255, 208, .10);
  --orange: #FF6B35;
  --paper: #F2F7F4;
  --stone: #8A948F;
  --clay: #B86B4B;
  --cream: #E8E2D6;

  --line: rgba(138, 148, 143, .26);
  --line-strong: rgba(57, 255, 208, .30);

  --font-display: 'Barlow Condensed', 'Oswald', 'Arial Narrow', 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --shell: 1240px;
  --pad: clamp(16px, 4vw, 40px);
  --r-sm: 2px;
  --r-md: 4px;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

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

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

body {
  margin: 0;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(0deg, rgba(138, 148, 143, .065) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(138, 148, 143, .065) 0 1px, transparent 1px 64px);
  background-attachment: fixed;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video, picture { max-width: 100%; }
img { height: auto; }

h1, h2, h3, h4 {
  margin: 0 0 .6em;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: .02em;
  color: var(--paper);
}

h1 { font-size: clamp(3rem, 8vw, 7rem); }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.8rem); }
h4 { font-size: 1.1rem; letter-spacing: .06em; }

p { margin: 0 0 1em; }

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; }

button { font: inherit; color: inherit; }

::selection { background: var(--cyan); color: var(--ink-900); }

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

#main-content:focus,
#main-content:focus-visible { outline: none; }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 300;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  border-radius: var(--r-sm);
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 12px; }

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

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 24px);
}

/* ---------- 页头 · 命令栏 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink-950);
  border-bottom: 1px solid var(--line-strong);
  box-shadow: 0 8px 24px -18px rgba(0, 0, 0, .9);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 1px, transparent 1px 28px);
  opacity: .32;
  pointer-events: none;
}

.header-grid {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  min-height: 64px;
  padding-block: 9px;
  position: relative;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--paper);
}
.brand__index {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  letter-spacing: .06em;
  padding: 4px 5px;
  background: var(--cyan);
  color: var(--ink-900);
  border-radius: 1px;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.05; }
.brand__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: .16em;
  transition: color .18s var(--ease);
}
.brand__latin {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .24em;
  color: var(--stone);
  text-transform: uppercase;
}
.brand:hover .brand__name { color: var(--cyan); }

/* 导航 */
.site-nav { flex: 1 1 auto; min-width: 0; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}
.site-nav__item { display: block; }
.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-family: var(--font-display);
  font-size: .98rem;
  letter-spacing: .06em;
  color: rgba(242, 247, 244, .78);
  transition: color .18s var(--ease), background-color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}
.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--moss);
  letter-spacing: .04em;
}
.site-nav__link:hover {
  color: var(--paper);
  background: var(--cyan-soft);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}
.site-nav__link:hover .site-nav__idx { color: var(--cyan); }
.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  background: var(--cyan-soft);
  border-color: rgba(57, 255, 208, .55);
  box-shadow: inset 0 -2px 0 0 var(--cyan);
}
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--cyan); }

/* 状态区 */
.header-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
}
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--stone);
  white-space: nowrap;
}
.status-chip__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, .16);
}
@media (prefers-reduced-motion: no-preference) {
  .status-chip__dot { animation: status-pulse 2.6s var(--ease) infinite; }
}
@keyframes status-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(255, 107, 53, .14); }
  50%      { box-shadow: 0 0 0 6px rgba(255, 107, 53, .04); }
}

/* 移动开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  color: var(--paper);
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}
.nav-toggle:hover { border-color: var(--line-strong); background: var(--cyan-soft); }
.nav-toggle__bars { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--cyan);
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}
.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
}
.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); }

/* 阅读进度尺 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(138, 148, 143, .18);
  overflow: hidden;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--orange) 100%);
  transition: transform .08s linear;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid var(--cyan);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: .08em;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease),
              box-shadow .18s var(--ease);
}
.btn:hover { transform: translateY(-1px); background: var(--cyan-soft); }
.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 700;
}
.btn--primary:hover {
  background: #63FFDA;
  border-color: #63FFDA;
  color: var(--ink-950);
  box-shadow: 0 8px 0 -5px rgba(57, 255, 208, .45);
}
.btn--ghost { border-color: var(--line); color: var(--paper); }
.btn--ghost:hover { border-color: var(--line-strong); background: rgba(57, 255, 208, .06); }
.btn--sm { padding: 8px 14px; font-size: .86rem; letter-spacing: .06em; }

/* ---------- 通用章节 / 面板 ---------- */
.section { position: relative; padding-block: clamp(40px, 7vw, 88px); }
.section-head { margin-bottom: clamp(20px, 3vw, 34px); }
.section-title { margin: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
}

.panel {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: clamp(16px, 2.4vw, 28px);
}

/* ---------- 状态与标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(57, 255, 208, .04);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--stone);
}
.chip--live { color: var(--orange); border-color: rgba(255, 107, 53, .45); }

.tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: var(--r-sm);
  background: var(--cream);
  color: #3B3327;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.tag--clay { background: var(--clay); color: var(--cream); }
.tag--moss { background: rgba(79, 111, 90, .55); color: var(--paper); }

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--stone);
}
.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs__item + .breadcrumbs__item::before { content: "/"; color: var(--moss); }
.breadcrumbs__link {
  color: var(--stone);
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.breadcrumbs__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.breadcrumbs__item[aria-current="page"] { color: var(--paper); }

/* ---------- 数字与长文 ---------- */
.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.prose {
  max-width: 72ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(242, 247, 244, .9);
}
.prose h2 { margin: 1.9em 0 .6em; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.prose h3 { margin: 1.6em 0 .5em; }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.25em; }
.prose li { margin-bottom: .45em; }
.prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--paper); }

/* ---------- 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    repeating-linear-gradient(90deg, rgba(57, 255, 208, .06) 0 1px, transparent 1px 40px),
    linear-gradient(160deg, var(--ink-800) 0%, #0A231D 100%);
  aspect-ratio: 16 / 9;
}
.media-frame > img,
.media-frame > svg,
.media-frame > video,
.media-frame > picture,
.media-frame > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 4 / 5; }
.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  margin: 0;
  padding: 10px 14px;
  background: linear-gradient(180deg, rgba(5, 16, 14, 0) 0%, rgba(5, 16, 14, .88) 100%);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--stone);
}

/* ---------- 页脚 · 看板 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(32px, 6vw, 72px);
  background: linear-gradient(180deg, #061713 0%, var(--ink-900) 55%, var(--ink-950) 100%);
  border-top: 1px solid var(--line);
  color: var(--stone);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 1px, transparent 1px 44px);
  opacity: .3;
  pointer-events: none;
}

.footer-plate { padding-block: clamp(36px, 6vw, 64px) clamp(20px, 3vw, 28px); }

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.footer-brand__mark {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .16em;
  color: var(--paper);
}
.footer-brand__latin {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer-brand__intro {
  margin: 0;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
}

.footer-col { min-width: 0; }
.footer-col__title {
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--moss);
}

.footer-nav__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px 16px;
}
.footer-nav__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: rgba(242, 247, 244, .8);
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.footer-nav__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.footer-contact__list { list-style: none; display: grid; gap: 10px; }
.footer-contact__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  color: rgba(242, 247, 244, .86);
}
.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--stone);
}
.footer-contact__value { word-break: break-word; }
.footer-contact__value--mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}
.footer-note {
  margin: 14px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--clay);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--moss);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  padding-top: 20px;
}
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; }
.footer-meta__line,
.footer-meta__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--stone);
}
.footer-meta__icp { color: var(--moss); }

.footer-legal {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
}
.footer-legal__item { display: block; }
.footer-legal__link {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--stone);
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.footer-legal__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .status-chip { display: none; }
}

@media (max-width: 960px) {
  .header-grid { flex-wrap: wrap; row-gap: 10px; padding-block: 10px; }
  .brand { order: 1; }
  .nav-toggle { display: inline-flex; order: 2; margin-left: auto; }
  .header-status { order: 3; margin-left: 0; gap: 8px; }
  .site-nav { order: 4; flex-basis: 100%; width: 100%; display: none; padding-top: 4px; }
  .site-nav[data-open="true"] { display: block; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    border-top: 1px solid var(--line);
    padding-top: 8px;
  }
  .site-nav__item { width: 100%; }
  .site-nav__link {
    width: 100%;
    padding: 12px 10px;
    font-size: 1.05rem;
    border: 1px solid transparent;
  }
  .site-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 0 var(--cyan); }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

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

@media (max-width: 640px) {
  .brand__latin { letter-spacing: .18em; font-size: 9px; }
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: 1fr; }
  .footer-nav__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .media-frame--wide { aspect-ratio: 16 / 9; }
  .btn--sm { padding: 8px 12px; font-size: .8rem; }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress__bar { transition: none; }
  .site-nav__link:hover,
  .btn:hover { transform: none; }
}