/* ==========================================================================
   半岛赛场 · 全站共享样式  /assets/site.css
   夜间赛场 × 数字控制室 —— 框架式导航、左右分屏、玻璃层与实色层并置
   ========================================================================== */

/* ---------- 0. 设计令牌 ---------- */
:root {
  --bd-deep:     #0A1A2F;
  --bd-midnight: #070B14;
  --bd-panel:    #102542;
  --bd-line:     #1E3557;
  --bd-orange:   #FF5A1F;
  --bd-ember:    #C23A0F;
  --bd-cyan:     #35E0D6;
  --bd-mint:     #2FCB8F;
  --bd-white:    #F4F7FB;
  --bd-grey:     #8C9BB0;
  --bd-glass:    rgba(244, 247, 251, .08);

  --bd-font: "Archivo Narrow", -apple-system, BlinkMacSystemFont, "Segoe UI",
             "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
             "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --bd-mono: ui-monospace, "JetBrains Mono", "Roboto Mono", "SFMono-Regular",
             Menlo, Consolas, "Noto Sans Mono", monospace;

  --bd-rail: 88px;
  --bd-bar: 68px;
  --bd-edge: 24px;
  --bd-max: 1280px;
  --bd-radius: 2px;
  --bd-ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 1. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: var(--bd-midnight);
}

body {
  margin: 0;
  min-height: 100vh;
  padding-left: var(--bd-rail);
  padding-top: var(--bd-bar);
  font-family: var(--bd-font);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--bd-white);
  background-color: var(--bd-deep);
  background-image:
    radial-gradient(120% 78% at 84% -10%, rgba(53, 224, 214, .10), transparent 62%),
    radial-gradient(96% 74% at -8% 104%, rgba(255, 90, 31, .08), transparent 64%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.2; }
p { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { max-width: 100%; display: block; }
img { height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
strong, b { font-weight: 700; }
hr { border: 0; height: 1px; background: var(--bd-line); margin: 0; }

::selection { background: var(--bd-orange); color: #08111F; }

:focus-visible {
  outline: 2px solid var(--bd-cyan);
  outline-offset: 3px;
  border-radius: 1px;
}

.bd-sr {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

/* ---------- 2. 跳转链接 ---------- */
.bd-skip {
  position: fixed;
  top: 10px; left: 10px;
  z-index: 300;
  padding: 11px 18px;
  font-size: 13px;
  letter-spacing: .08em;
  color: #08111F;
  background: var(--bd-orange);
  border-radius: var(--bd-radius);
  transform: translateY(-180%);
  transition: transform .2s var(--bd-ease);
}
.bd-skip:focus { transform: translateY(0); }

/* ---------- 3. 框架边条 ---------- */
.bd-frame { display: block; }

.bd-rail {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 60;
  width: var(--bd-rail);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 22px 0 18px;
  background: linear-gradient(180deg, #070B14 0%, #0A1A2F 52%, #070B14 100%);
  border-right: 1px solid var(--bd-line);
}

.bd-rail__brand {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.bd-rail__mark {
  writing-mode: vertical-rl;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .30em;
  color: var(--bd-white);
  transition: color .18s var(--bd-ease);
}
.bd-rail__brand:hover .bd-rail__mark { color: var(--bd-cyan); }

.bd-rail__ver {
  writing-mode: vertical-rl;
  font-family: var(--bd-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--bd-cyan);
}

.bd-rail__meter {
  position: relative;
  flex: 1 1 auto;
  width: 2px;
  margin: 24px 0;
  background: var(--bd-line);
  overflow: hidden;
}
.bd-rail__meter::after {
  content: "";
  position: absolute; left: 0; right: 0; top: 50%;
  height: 1px; background: var(--bd-line);
}
.bd-rail__fill {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: var(--bd-fill, 0%);
  background: linear-gradient(180deg, var(--bd-cyan) 0%, var(--bd-orange) 100%);
}

.bd-rail__spine {
  flex: 0 0 auto;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: .30em;
  color: var(--bd-grey);
  margin-bottom: 18px;
}

.bd-rail__cta {
  flex: 0 0 auto;
  writing-mode: vertical-rl;
  padding: 18px 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: #08111F;
  background: var(--bd-orange);
  border-radius: var(--bd-radius);
  transition: background .15s var(--bd-ease), box-shadow .15s var(--bd-ease);
}
.bd-rail__cta:hover { background: #FF7A45; }
.bd-rail__cta:active { background: var(--bd-ember); }
.bd-rail__cta:focus-visible { outline-color: var(--bd-white); }

/* ---------- 4. 顶部索引条 ---------- */
.bd-bar {
  position: fixed;
  top: 0;
  left: var(--bd-rail);
  right: 0;
  z-index: 55;
  height: var(--bd-bar);
  display: flex;
  align-items: center;
  padding: 0 var(--bd-edge);
  background: rgba(7, 11, 20, .86);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--bd-line);
}

.bd-bar__index {
  flex: 0 0 auto;
  margin: 0;
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--bd-grey);
  white-space: nowrap;
}
.bd-bar__ver {
  margin-left: 8px;
  padding: 2px 7px;
  color: var(--bd-cyan);
  border: 1px solid rgba(53, 224, 214, .42);
  border-radius: 2px;
}

.bd-nav { margin-left: clamp(20px, 3vw, 48px); min-width: 0; }

.bd-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.bd-nav__item { display: block; }

.bd-nav__link {
  position: relative;
  display: block;
  padding: 9px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--bd-grey);
  border-radius: var(--bd-radius);
  white-space: nowrap;
  transition: color .15s var(--bd-ease), background .15s var(--bd-ease);
}
.bd-nav__link:hover { color: var(--bd-white); background: var(--bd-glass); }
.bd-nav__link:active { color: var(--bd-cyan); }

.bd-nav__link[aria-current="page"] { color: var(--bd-white); font-weight: 700; }
.bd-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 1px;
  height: 2px;
  background: var(--bd-orange);
}

.bd-jump {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.bd-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--bd-grey);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-radius);
  transition: color .15s var(--bd-ease), border-color .15s var(--bd-ease), background .15s var(--bd-ease);
}
.bd-jump__link::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--bd-cyan);
}
.bd-jump__link:hover {
  color: var(--bd-white);
  border-color: rgba(53, 224, 214, .55);
  background: var(--bd-glass);
}
.bd-jump__link:active { border-color: var(--bd-orange); }

.bd-burger {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-radius);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--bd-white);
  transition: border-color .15s var(--bd-ease), background .15s var(--bd-ease);
}
.bd-burger:hover { border-color: rgba(53, 224, 214, .55); background: var(--bd-glass); }
.bd-burger__lines { display: block; width: 16px; }
.bd-burger__lines i {
  display: block;
  height: 1.5px;
  background: var(--bd-white);
  transition: transform .22s var(--bd-ease), opacity .22s var(--bd-ease);
}
.bd-burger__lines i + i { margin-top: 4px; }
.bd-burger[aria-expanded="true"] { border-color: rgba(255, 90, 31, .7); }
.bd-burger[aria-expanded="true"] .bd-burger__lines i:first-child {
  transform: translateY(2.75px) rotate(45deg);
}
.bd-burger[aria-expanded="true"] .bd-burger__lines i:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

.bd-bar__trace {
  position: absolute;
  left: 0; bottom: -1px;
  height: 2px;
  width: var(--bd-fill, 0%);
  background: linear-gradient(90deg, var(--bd-cyan) 0%, var(--bd-orange) 100%);
}

/* ---------- 5. 页脚 ---------- */
.bd-foot {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  padding: clamp(48px, 7vw, 92px) var(--bd-edge) 0;
  background: linear-gradient(180deg, #0A1A2F 0%, #070B14 100%);
  border-top: 1px solid var(--bd-line);
  overflow: hidden;
}
.bd-foot::before {
  content: "";
  position: absolute;
  top: -140px; right: -100px;
  width: 460px; height: 460px;
  background: radial-gradient(circle, rgba(53, 224, 214, .14), transparent 68%);
  pointer-events: none;
}

.bd-foot__stage {
  position: relative;
  max-width: var(--bd-max);
  margin: 0 auto;
}

.bd-foot__eyebrow {
  margin: 0 0 14px;
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--bd-grey);
}

.bd-foot__mark {
  margin: 0;
  font-size: clamp(52px, 12vw, 146px);
  font-weight: 200;
  line-height: .92;
  letter-spacing: -.01em;
  color: var(--bd-white);
}

.bd-foot__line {
  margin: 12px 0 0;
  padding-left: 14px;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--bd-grey);
  border-left: 2px solid var(--bd-orange);
}

.bd-foot__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(0, 1.35fr);
  gap: 34px 40px;
  margin-top: clamp(36px, 5vw, 64px);
  padding-top: 36px;
  border-top: 1px solid var(--bd-line);
}

.bd-foot__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 15px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--bd-white);
}
.bd-foot__title::before {
  content: "";
  width: 14px; height: 1px;
  background: var(--bd-cyan);
}

.bd-foot__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 14px;
  color: var(--bd-grey);
}
.bd-foot__list a {
  color: var(--bd-grey);
  transition: color .15s var(--bd-ease);
}
.bd-foot__list a:hover {
  color: var(--bd-white);
  text-decoration: underline;
  text-decoration-color: var(--bd-orange);
  text-underline-offset: 4px;
}
.bd-foot__list--meta {
  font-family: var(--bd-mono);
  font-size: 13px;
  line-height: 1.7;
  word-break: break-word;
}

.bd-foot__note {
  margin: 18px 0 0;
  padding-left: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--bd-grey);
  border-left: 2px solid var(--bd-line);
}

.bd-foot__base {
  max-width: var(--bd-max);
  margin: clamp(40px, 6vw, 74px) auto 0;
  padding: 20px 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid var(--bd-line);
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--bd-grey);
}
.bd-foot__icp, .bd-foot__meta { margin: 0; }

/* ---------- 6. 通用容器与网格 ---------- */
.bd-wrap {
  max-width: var(--bd-max);
  margin: 0 auto;
  padding: 0 var(--bd-edge);
}

.bd-grid {
  display: grid;
  gap: 24px;
}
.bd-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.bd-grid--split {
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: clamp(24px, 4vw, 56px);
}

.bd-rule {
  height: 1px;
  background: var(--bd-line);
  border: 0;
  margin: clamp(28px, 4vw, 48px) 0;
}

/* ---------- 7. 文字层级 ---------- */
.bd-display {
  margin: 0;
  font-size: clamp(46px, 11vw, 118px);
  font-weight: 200;
  line-height: .92;
  letter-spacing: -.01em;
}
.bd-title {
  margin: 0;
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1.14;
}
.bd-sub {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
}
.bd-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--bd-grey);
}
.bd-eyebrow::before {
  content: "";
  width: 18px; height: 2px;
  background: var(--bd-orange);
}
.bd-prose {
  max-width: 34em;
  color: var(--bd-white);
}
.bd-muted { color: var(--bd-grey); }

/* ---------- 8. 按钮 ---------- */
.bd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 26px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  border-radius: var(--bd-radius);
  transition: background .15s var(--bd-ease), color .15s var(--bd-ease),
              border-color .15s var(--bd-ease), transform .15s var(--bd-ease);
}
.bd-btn:active { transform: translateY(1px); }

.bd-btn--primary {
  color: #08111F;
  background: var(--bd-orange);
}
.bd-btn--primary:hover { background: #FF7A45; }
.bd-btn--primary:active { background: var(--bd-ember); color: var(--bd-white); }

.bd-btn--ghost {
  color: var(--bd-white);
  border: 1px solid var(--bd-line);
}
.bd-btn--ghost:hover {
  border-color: rgba(53, 224, 214, .6);
  background: var(--bd-glass);
}
.bd-btn--ghost:active { border-color: var(--bd-orange); color: var(--bd-cyan); }

/* ---------- 9. 层级组件：玻璃 / 实色面板 / 数字锚点 ---------- */
.bd-glass {
  padding: 20px 22px;
  background: var(--bd-glass);
  border: 1px solid rgba(30, 53, 87, .9);
  border-radius: var(--bd-radius);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform .15s var(--bd-ease), border-color .15s var(--bd-ease),
              box-shadow .15s var(--bd-ease);
}
.bd-glass:hover {
  transform: translateY(-4px);
  border-color: rgba(53, 224, 214, .45);
  box-shadow: 0 20px 40px -26px rgba(0, 0, 0, .95);
}

.bd-panel {
  padding: clamp(20px, 3vw, 32px);
  background: var(--bd-panel);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-radius);
}

.bd-metric {
  font-family: var(--bd-mono);
  font-size: clamp(48px, 9vw, 96px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--bd-white);
}
.bd-metric--accent { color: var(--bd-orange); }
.bd-metric__label {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .10em;
  color: var(--bd-grey);
}

/* ---------- 10. 图片容器基础规则 ---------- */
.bd-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--bd-midnight);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-radius);
  aspect-ratio: 16 / 9;
}
.bd-media--wide   { aspect-ratio: 21 / 9; }
.bd-media--tall   { aspect-ratio: 4 / 5; }
.bd-media--square { aspect-ratio: 1 / 1; }

.bd-media--scene {
  background-image:
    radial-gradient(70% 62% at 72% 18%, rgba(53, 224, 214, .20), transparent 64%),
    radial-gradient(62% 70% at 16% 92%, rgba(255, 90, 31, .18), transparent 66%),
    repeating-linear-gradient(90deg, rgba(30, 53, 87, .35) 0 1px, transparent 1px 64px),
    linear-gradient(160deg, #102542 0%, #070B14 100%);
}

.bd-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.bd-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(7, 11, 20, 0) 42%, rgba(7, 11, 20, .74) 100%),
    repeating-linear-gradient(90deg, rgba(53, 224, 214, .05) 0 1px, transparent 1px 56px);
}

.bd-media__cap {
  position: absolute;
  left: 16px; right: 16px; bottom: 14px;
  z-index: 2;
  margin: 0;
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--bd-grey);
}

/* ---------- 11. 面包屑 / 标签 ---------- */
.bd-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--bd-grey);
}
.bd-crumbs li { display: flex; align-items: center; gap: 8px; }
.bd-crumbs li + li::before {
  content: "/";
  color: var(--bd-line);
}
.bd-crumbs a { color: var(--bd-grey); }
.bd-crumbs a:hover { color: var(--bd-cyan); }

.bd-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--bd-cyan);
  border: 1px solid rgba(53, 224, 214, .38);
  border-radius: 999px;
}
.bd-tag--mint { color: var(--bd-mint); border-color: rgba(47, 203, 143, .42); }
.bd-tag--orange { color: var(--bd-orange); border-color: rgba(255, 90, 31, .45); }

/* ---------- 12. 显现钩子 ---------- */
.bd-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}
.bd-js [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity .42s ease-out, transform .42s ease-out;
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1200px) {
  .bd-jump__link { font-size: 11px; padding: 6px 10px; }
  .bd-nav__link { padding: 9px 11px; font-size: 12.5px; }
}

@media (max-width: 1023px) {
  :root {
    --bd-rail: 0px;
    --bd-bar: 58px;
  }

  .bd-rail { display: none; }

  .bd-bar { padding: 0 16px; gap: 10px; }
  .bd-bar__index { font-size: 10px; letter-spacing: .1em; }
  .bd-bar__ver { margin-left: 6px; padding: 1px 6px; }

  .bd-jump { display: none; }

  .bd-burger { display: inline-flex; margin-left: auto; }

  .bd-nav {
    position: fixed;
    top: var(--bd-bar);
    left: 0;
    right: 0;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    background: rgba(7, 11, 20, .97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid transparent;
    transition: max-height .32s var(--bd-ease), border-color .32s var(--bd-ease);
  }
  .bd-nav[data-open] {
    max-height: min(72vh, 440px);
    overflow-y: auto;
    border-bottom-color: var(--bd-line);
  }

  .bd-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 14px;
  }
  .bd-nav__item { border-bottom: 1px solid rgba(30, 53, 87, .62); }
  .bd-nav__item:last-child { border-bottom: 0; }

  .bd-nav__link {
    padding: 15px 20px;
    font-size: 15px;
    letter-spacing: .04em;
  }
  .bd-nav__link:hover { background: rgba(244, 247, 251, .05); }

  .bd-nav__link[aria-current="page"] {
    background: rgba(255, 90, 31, .10);
  }
  .bd-nav__link[aria-current="page"]::after {
    left: 0; right: auto; top: 0; bottom: 0;
    width: 3px; height: auto;
  }

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

  .bd-foot__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 28px;
  }
}

@media (max-width: 640px) {
  body { font-size: 16px; line-height: 1.72; }

  .bd-grid--12 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .bd-glass { padding: 16px 16px; }
  .bd-btn { padding: 13px 20px; font-size: 13.5px; }

  .bd-foot__cols { grid-template-columns: minmax(0, 1fr); }
  .bd-foot__base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 14. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .bd-js [data-reveal] { opacity: 1; transform: none; }
  .bd-glass:hover { transform: none; }
}