/* ============================================================
   竞博赛场 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

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

:root {
  --jb-green: #0B1F1A;
  --jb-charcoal: #0E1110;
  --jb-slate: #16302A;
  --jb-lime: #C8FF3D;
  --jb-orange: #FF8A3D;
  --jb-red: #FF3B47;
  --jb-yellow: #F5C518;
  --jb-cyan: #3DE0FF;
  --jb-ink: #E8F2EC;
  --jb-muted: #7E948C;

  --jb-line: rgba(126, 148, 140, .22);
  --jb-line-strong: rgba(126, 148, 140, .42);
  --jb-ink-soft: rgba(232, 242, 236, .78);

  --jb-font-display: "Archivo Black", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --jb-font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --jb-font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --jb-wrap: 1200px;
  --jb-gutter: clamp(16px, 4vw, 32px);
  --jb-radius: 18px;
  --jb-radius-lg: 26px;
  --jb-pill: 999px;
  --jb-cut: 18px;

  --jb-speed: .32s;
  --jb-ease: cubic-bezier(.22, .8, .28, 1);
}

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

body {
  margin: 0;
  min-height: 100%;
  overflow-x: hidden;
  color: var(--jb-ink);
  font-family: var(--jb-font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  background-color: var(--jb-green);
  background-image:
    linear-gradient(rgba(61, 224, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 224, 255, .045) 1px, transparent 1px);
  background-size: 104px 104px, 104px 104px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0 0 .6em;
  font-family: var(--jb-font-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--jb-ink);
}

h1 { font-size: clamp(34px, 6vw, 64px); }
h2 { font-size: clamp(24px, 4vw, 40px); }
h3 { font-size: clamp(18px, 2.4vw, 24px); }
h4 { font-size: clamp(16px, 2vw, 19px); }

p { margin: 0 0 1em; }
a { color: inherit; }
img, svg, video { max-width: 100%; }
button { font-family: inherit; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }

::selection { background: var(--jb-lime); color: #0B1F1A; }

:focus-visible {
  outline: 2px solid var(--jb-cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 跳转链接 ---------- */
.jb-skip {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 130;
  transform: translate(-50%, -180%);
  padding: 10px 20px;
  border-radius: var(--jb-pill);
  background: var(--jb-lime);
  color: #0B1F1A;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  transition: transform .22s var(--jb-ease);
}
.jb-skip:focus { transform: translate(-50%, 0); }

/* ---------- 页顶进度条 ---------- */
.jb-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
}
.jb-progress::after {
  content: "";
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(var(--jb-progress, 0));
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--jb-lime), var(--jb-cyan) 52%, var(--jb-orange));
  transition: transform .12s linear;
}

/* ============================================================
   悬浮胶囊头部
   ============================================================ */
.jb-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 110;
  padding: 12px var(--jb-gutter) 0;
  pointer-events: none;
}

.jb-header__inner {
  pointer-events: auto;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  max-width: var(--jb-wrap);
  margin: 0 auto;
  padding: 9px 10px 9px 14px;
  background: rgba(14, 17, 16, .84);
  border: 1px solid var(--jb-line);
  border-radius: var(--jb-pill);
  box-shadow: 0 14px 36px rgba(0, 0, 0, .42);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  transition:
    max-width var(--jb-speed) var(--jb-ease),
    background var(--jb-speed) var(--jb-ease),
    border-color var(--jb-speed) var(--jb-ease),
    padding var(--jb-speed) var(--jb-ease);
}
.jb-header[data-condensed="true"] .jb-header__inner {
  max-width: 880px;
  background: rgba(11, 31, 26, .93);
  border-color: rgba(200, 255, 61, .26);
}
.jb-header[data-nav-open="true"] .jb-header__inner {
  border-color: rgba(200, 255, 61, .42);
}

/* 品牌 */
.jb-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}
.jb-brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  background: var(--jb-lime);
  color: #0B1F1A;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}
.jb-brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.16; }
.jb-brand__name {
  font-family: var(--jb-font-display);
  font-size: 16px;
  letter-spacing: .02em;
  white-space: nowrap;
}
.jb-brand__sub {
  font-family: var(--jb-font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--jb-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 章节名（收窄后露出） */
.jb-header__chapter {
  display: none;
  margin-left: 14px;
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--jb-cyan);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--jb-speed) var(--jb-ease), transform var(--jb-speed) var(--jb-ease);
}
.jb-header[data-condensed="true"] .jb-header__chapter { opacity: 1; transform: none; }

/* 导航 */
.jb-nav {
  position: fixed;
  top: calc(12px + 62px);
  left: var(--jb-gutter);
  right: var(--jb-gutter);
  z-index: 112;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: calc(100vh - 108px);
  overflow-y: auto;
  padding: 14px;
  background: rgba(14, 17, 16, .97);
  border: 1px solid var(--jb-line-strong);
  border-radius: var(--jb-radius-lg);
  box-shadow: 0 28px 60px rgba(0, 0, 0, .55);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity .22s var(--jb-ease), transform .22s var(--jb-ease), visibility .22s linear;
}
.jb-nav[data-open="true"] {
  visibility: visible;
  opacity: 1;
  transform: none;
}
.jb-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.jb-nav__item { margin: 0; }
.jb-nav__link {
  display: block;
  padding: 11px 12px;
  border-radius: 12px;
  color: var(--jb-ink);
  font-size: 15px;
  text-decoration: none;
  transition: background .2s var(--jb-ease), color .2s var(--jb-ease);
}
.jb-nav__link:hover { background: rgba(200, 255, 61, .08); color: var(--jb-lime); }
.jb-nav__link[aria-current="page"] {
  color: var(--jb-lime);
  background: rgba(200, 255, 61, .1);
  font-weight: 700;
}
.jb-nav__link[aria-current="page"]::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  vertical-align: middle;
  background: var(--jb-lime);
  transform: rotate(45deg) translateY(-1px);
}
.jb-nav__cta { width: 100%; justify-content: center; }

/* 汉堡按钮 */
.jb-nav__toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--jb-line-strong);
  border-radius: var(--jb-pill);
  color: var(--jb-ink);
  font-size: 13px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color .2s var(--jb-ease), color .2s var(--jb-ease);
}
.jb-nav__toggle:hover { border-color: var(--jb-lime); color: var(--jb-lime); }
.jb-nav__toggle-bars {
  position: relative;
  display: block;
  width: 14px;
  height: 2px;
  background: currentColor;
  transition: background .2s var(--jb-ease);
}
.jb-nav__toggle-bars::before,
.jb-nav__toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 14px;
  height: 2px;
  background: currentColor;
  transition: transform .22s var(--jb-ease), top .22s var(--jb-ease);
}
.jb-nav__toggle-bars::before { top: -5px; }
.jb-nav__toggle-bars::after { top: 5px; }
.jb-nav__toggle[aria-expanded="true"] .jb-nav__toggle-bars { background: transparent; }
.jb-nav__toggle[aria-expanded="true"] .jb-nav__toggle-bars::before { top: 0; transform: rotate(45deg); }
.jb-nav__toggle[aria-expanded="true"] .jb-nav__toggle-bars::after { top: 0; transform: rotate(-45deg); }

/* 版本号胶囊 */
.jb-version-chip {
  flex: 0 0 auto;
  padding: 7px 11px;
  background: rgba(61, 224, 255, .1);
  border: 1px solid rgba(61, 224, 255, .36);
  border-radius: var(--jb-pill);
  color: var(--jb-cyan);
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  cursor: pointer;
  transition: background .2s var(--jb-ease), border-color .2s var(--jb-ease), color .2s var(--jb-ease);
}
.jb-version-chip:hover,
.jb-version-chip[aria-expanded="true"] {
  background: rgba(61, 224, 255, .2);
  border-color: var(--jb-cyan);
  color: #EAFBFF;
}

/* 版本抽屉 */
.jb-drawer {
  position: fixed;
  right: var(--jb-gutter);
  bottom: var(--jb-gutter);
  z-index: 115;
  width: min(340px, calc(100vw - var(--jb-gutter) * 2));
  padding: 18px;
  background: var(--jb-charcoal);
  border: 1px solid rgba(61, 224, 255, .3);
  border-radius: var(--jb-radius-lg);
  box-shadow: 0 26px 64px rgba(0, 0, 0, .6);
  visibility: hidden;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .24s var(--jb-ease), transform .24s var(--jb-ease), visibility .24s linear;
}
.jb-drawer[data-open="true"] { visibility: visible; opacity: 1; transform: none; }
.jb-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--jb-line);
}
.jb-drawer__title {
  margin: 0;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--jb-cyan);
}
.jb-drawer__close {
  padding: 5px 10px;
  background: transparent;
  border: 1px solid var(--jb-line-strong);
  border-radius: var(--jb-pill);
  color: var(--jb-muted);
  font-size: 12px;
  cursor: pointer;
  transition: color .2s var(--jb-ease), border-color .2s var(--jb-ease);
}
.jb-drawer__close:hover { color: var(--jb-ink); border-color: var(--jb-ink); }
.jb-drawer__list { margin: 0; padding: 0; list-style: none; }
.jb-drawer__item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(126, 148, 140, .14);
}
.jb-drawer__key {
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--jb-lime);
  line-height: 1.9;
}
.jb-drawer__val { font-size: 13px; line-height: 1.7; color: var(--jb-ink-soft); }
.jb-drawer__foot { margin: 14px 0 0; font-size: 12px; }
.jb-drawer__link {
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--jb-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 224, 255, .4);
}
.jb-drawer__link:hover { color: var(--jb-lime); border-color: var(--jb-lime); }

/* ============================================================
   页脚
   ============================================================ */
.jb-footer {
  position: relative;
  background: var(--jb-charcoal);
  border-top: 1px solid var(--jb-line);
  overflow: hidden;
}
.jb-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(200, 255, 61, .08), transparent 34%, transparent 66%, rgba(255, 138, 61, .08)),
    repeating-linear-gradient(90deg, rgba(61, 224, 255, .05) 0 1px, transparent 1px 120px);
}
.jb-footer__trail {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--jb-cyan) 45%, var(--jb-lime) 70%, transparent);
  opacity: .5;
}
.jb-footer__inner {
  position: relative;
  padding-top: clamp(38px, 6vw, 66px);
  padding-bottom: 26px;
}
.jb-footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}
.jb-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.jb-footer__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: rgba(200, 255, 61, .12);
  border: 1px solid rgba(200, 255, 61, .4);
  color: var(--jb-lime);
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}
.jb-footer__name {
  margin: 0;
  font-family: var(--jb-font-display);
  font-size: 22px;
  letter-spacing: .01em;
}
.jb-footer__line {
  margin: 0 0 6px;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--jb-muted);
}
.jb-footer__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 18px;
}
.jb-footer__col-title {
  margin: 0 0 12px;
  font-family: var(--jb-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--jb-cyan);
}
.jb-footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.jb-footer__link {
  display: inline-block;
  font-size: 14px;
  color: var(--jb-ink-soft);
  text-decoration: none;
  transition: color .2s var(--jb-ease), transform .2s var(--jb-ease);
}
.jb-footer__link::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 8px;
  vertical-align: middle;
  border: 1px solid var(--jb-muted);
  transform: rotate(45deg) translateY(-1px);
  transition: background .2s var(--jb-ease), border-color .2s var(--jb-ease);
}
.jb-footer__link:hover { color: var(--jb-lime); transform: translateX(3px); }
.jb-footer__link:hover::before { background: var(--jb-lime); border-color: var(--jb-lime); }
.jb-footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin-top: clamp(28px, 5vw, 46px);
  padding-top: 20px;
  border-top: 1px solid var(--jb-line);
}
.jb-footer__meta-item {
  margin: 0;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--jb-muted);
}
.jb-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed rgba(126, 148, 140, .18);
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--jb-muted);
}
.jb-footer__legal,
.jb-footer__copy,
.jb-footer__version { margin: 0; }
.jb-footer__version { color: var(--jb-cyan); }

/* ============================================================
   通用布局与组件
   ============================================================ */
.jb-wrap {
  width: 100%;
  max-width: var(--jb-wrap);
  margin-inline: auto;
  padding-inline: var(--jb-gutter);
}
.jb-main {
  display: block;
  padding-top: clamp(108px, 15vh, 156px);
  padding-bottom: clamp(56px, 9vw, 110px);
}
.jb-section { padding-block: clamp(32px, 6vw, 64px); }
.jb-prose {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--jb-ink-soft);
}
.jb-prose h2, .jb-prose h3 { color: var(--jb-ink); margin-top: 1.5em; }
.jb-prose strong { color: var(--jb-ink); }

.jb-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* 按钮 */
.jb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--jb-pill);
  font-family: var(--jb-font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .03em;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s var(--jb-ease), color .2s var(--jb-ease), border-color .2s var(--jb-ease), box-shadow .2s var(--jb-ease), transform .2s var(--jb-ease);
}
.jb-btn--primary { background: var(--jb-lime); color: #0B1F1A; }
.jb-btn--primary:hover { box-shadow: 0 0 0 4px rgba(200, 255, 61, .2); transform: translateY(-1px); }
.jb-btn--away { background: var(--jb-orange); color: #23120A; }
.jb-btn--away:hover { box-shadow: 0 0 0 4px rgba(255, 138, 61, .2); transform: translateY(-1px); }
.jb-btn--ghost {
  background: transparent;
  border-color: var(--jb-line-strong);
  color: var(--jb-ink);
}
.jb-btn--ghost:hover { border-color: var(--jb-lime); color: var(--jb-lime); }

/* 章节色带 */
.jb-band {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding: 14px 18px;
  background: linear-gradient(90deg, rgba(22, 48, 42, .95), rgba(22, 48, 42, .18));
  border-left: 3px solid var(--jb-lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}
.jb-band__num {
  font-family: var(--jb-font-mono);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--jb-lime);
}
.jb-band__title {
  margin: 0;
  font-family: var(--jb-font-display);
  font-size: clamp(19px, 3vw, 28px);
  line-height: 1.2;
}
.jb-band__meta {
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--jb-muted);
}

/* 展览标签牌 */
.jb-placard {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 3px 10px 3px 9px;
  background: rgba(61, 224, 255, .07);
  border-left: 2px solid var(--jb-cyan);
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--jb-cyan);
}

/* 标签 */
.jb-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: var(--jb-pill);
  border: 1px solid var(--jb-line-strong);
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--jb-muted);
}
.jb-tag--home { border-color: rgba(200, 255, 61, .5); color: var(--jb-lime); background: rgba(200, 255, 61, .08); }
.jb-tag--away { border-color: rgba(255, 138, 61, .5); color: var(--jb-orange); background: rgba(255, 138, 61, .08); }
.jb-tag--warn { border-color: rgba(255, 59, 71, .55); color: var(--jb-red); background: rgba(255, 59, 71, .1); }
.jb-tag--yellow { border-color: rgba(245, 197, 24, .55); color: var(--jb-yellow); background: rgba(245, 197, 24, .1); }
.jb-tag--muted { border-color: var(--jb-line); color: var(--jb-muted); }

.jb-num {
  font-family: var(--jb-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

/* 切角面板 */
.jb-panel {
  position: relative;
  padding: 22px;
  background: var(--jb-slate);
  border: 1px solid var(--jb-line);
  clip-path: polygon(0 0, calc(100% - var(--jb-cut)) 0, 100% var(--jb-cut), 100% 100%, 0 100%);
}
.jb-panel > :last-child { margin-bottom: 0; }

/* 网格 */
.jb-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
.jb-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.jb-grid--asym { grid-template-columns: 1fr; }

/* 主客场镜像 */
.jb-mirror { display: grid; grid-template-columns: 1fr; gap: 0; }
.jb-mirror__side { padding: 22px; background: rgba(22, 48, 42, .55); }
.jb-mirror__home { border-left: 3px solid var(--jb-lime); }
.jb-mirror__away { border-left: 3px solid var(--jb-orange); }
.jb-mirror__divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--jb-cyan), transparent);
  opacity: .7;
}

/* 图片容器 */
.jb-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--jb-charcoal);
  clip-path: polygon(0 0, calc(100% - var(--jb-cut)) 0, 100% var(--jb-cut), 100% 100%, 0 100%);
}
.jb-media--wide { aspect-ratio: 21 / 9; }
.jb-media--tall { aspect-ratio: 3 / 4; }
.jb-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.jb-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 31, 26, 0) 45%, rgba(11, 31, 26, .78) 100%),
    linear-gradient(90deg, rgba(200, 255, 61, .07), transparent 40%, rgba(255, 138, 61, .07));
}
.jb-media__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--jb-cyan);
}

/* 车票式收尾卡 */
.jb-ticket {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 22px;
  background: var(--jb-slate);
  border-left: 3px solid var(--jb-cyan);
  border-radius: 0 var(--jb-radius) var(--jb-radius) 0;
}
.jb-ticket__eyebrow {
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--jb-cyan);
}
.jb-ticket__title {
  margin: 4px 0 0;
  font-family: var(--jb-font-display);
  font-size: clamp(17px, 2.4vw, 22px);
}

/* 面包屑 */
.jb-crumb {
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--jb-muted);
}
.jb-crumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.jb-crumb__item { display: flex; align-items: center; gap: 8px; }
.jb-crumb__item + .jb-crumb__item::before {
  content: "/";
  color: rgba(126, 148, 140, .5);
}
.jb-crumb__link {
  color: var(--jb-muted);
  text-decoration: none;
  transition: color .2s var(--jb-ease);
}
.jb-crumb__link:hover { color: var(--jb-lime); }

/* ============================================================
   响应式
   ============================================================ */
@media (min-width: 640px) {
  .jb-grid { gap: 18px; }
  .jb-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .jb-footer__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 760px) {
  .jb-footer__top { grid-template-columns: minmax(230px, 1.05fr) 1.95fr; gap: 40px; }
}

@media (min-width: 900px) {
  .jb-header__inner { padding: 10px 12px 10px 18px; gap: 14px; }
  .jb-header__chapter { display: inline-block; }

  .jb-nav {
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 4px;
    margin-left: auto;
    max-height: none;
    overflow: visible;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    visibility: visible;
    opacity: 1;
    transform: none;
    transition: none;
  }
  .jb-nav__list { flex-direction: row; gap: 2px; }
  .jb-nav__link { padding: 8px 12px; font-size: 14px; }
  .jb-nav__link[aria-current="page"] { background: transparent; }
  .jb-nav__link[aria-current="page"]::before { margin-right: 8px; }
  .jb-nav__cta { width: auto; margin-left: 8px; padding: 9px 16px; font-size: 13px; }
  .jb-nav__toggle { display: none; }

  .jb-grid--asym { grid-template-columns: minmax(0, 8fr) minmax(0, 3fr); gap: 26px; }
  .jb-mirror { grid-template-columns: 1fr 1px 1fr; }
  .jb-mirror__divider { height: auto; width: 1px; background: linear-gradient(180deg, transparent, var(--jb-cyan), transparent); }
  .jb-section { padding-block: clamp(44px, 7vw, 78px); }
}

@media (min-width: 1200px) {
  .jb-panel { padding: 26px; }
}

/* 减小动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .jb-progress::after { transition: none; }
}