/* =========================================================
   拼搏体育主站 · 共享样式 /assets/site.css
   深靛夜赛场 + 荧光青柠坐标体系
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd, hr { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-900: #0A1030;
  --ink-800: #131A46;
  --ink-700: #1F2A63;
  --ink-600: #2A3579;
  --mist: #9AA6CE;
  --text: #DCE0F2;
  --paper: #F3EFE4;
  --lime: #B6FF3B;
  --lime-soft: #DEFF9E;
  --orange: #FF9A2B;
  --red: #FF4A5C;
  --gold: #F2C94C;

  --line: rgba(154, 166, 206, 0.2);
  --line-strong: rgba(154, 166, 206, 0.42);

  --rail-w: 268px;
  --maxw: 1280px;
  --pad-x: clamp(20px, 4.2vw, 64px);
  --gap: clamp(14px, 1.5vw, 22px);

  --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Helvetica Neue", "Arial Narrow", Arial, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.24s;

  --z-rail: 60;
  --z-scrim: 85;
  --z-drawer: 90;
  --z-progress: 200;
  --z-skip: 300;
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    linear-gradient(rgba(154, 166, 206, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 166, 206, 0.055) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--paper);
  font-weight: 400;
  text-wrap: balance;
}
h1 { font-size: clamp(42px, 7.6vw, 104px); font-weight: 300; line-height: 0.96; letter-spacing: -0.03em; }
h2 { font-size: clamp(26px, 4vw, 48px); line-height: 1.08; letter-spacing: -0.02em; }
h3 { font-size: clamp(19px, 2.1vw, 26px); line-height: 1.3; letter-spacing: -0.012em; font-weight: 600; }
h4 { font-size: 16px; font-weight: 600; letter-spacing: 0.02em; }

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

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

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

body.pb-nav-locked { overflow: hidden; }

/* ---------- 4. Skip link ---------- */
.pb-skip {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: var(--z-skip);
  transform: translateY(-260%);
  padding: 10px 18px;
  background: var(--lime);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 0.16s var(--ease);
}
.pb-skip:focus { transform: translateY(0); }

/* ---------- 5. Header / 坐标轨道 ---------- */
.pb-header {
  position: sticky;
  top: 0;
  z-index: var(--z-rail);
}

.pb-rail {
  position: relative;
  z-index: var(--z-rail);
  background: rgba(10, 16, 48, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.pb-rail__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 13px var(--pad-x);
}

.pb-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.pb-brand__mark {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  color: var(--lime);
  border: 1px solid var(--lime);
  background: linear-gradient(140deg, rgba(182, 255, 59, 0.16), transparent 62%);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.pb-brand:hover .pb-brand__mark { background-color: var(--lime); color: var(--ink-900); }
.pb-brand__text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.pb-brand__name { font-family: var(--font-display); font-size: 17px; font-weight: 600; letter-spacing: 0.02em; color: var(--paper); }
.pb-brand__sub { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; color: var(--mist); text-transform: uppercase; white-space: nowrap; }

/* 移动导航按钮 */
.pb-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line-strong);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.pb-nav-toggle:hover { border-color: var(--lime); color: var(--lime); }
.pb-nav-toggle__box { display: flex; flex-direction: column; justify-content: space-between; width: 18px; height: 12px; }
.pb-nav-toggle__bar { display: block; width: 100%; height: 1.5px; background: currentColor; transition: transform 0.2s var(--ease), opacity 0.2s var(--ease); }
.pb-header[data-open] .pb-nav-toggle__bar:nth-child(1) { transform: translateY(5.25px) rotate(45deg); }
.pb-header[data-open] .pb-nav-toggle__bar:nth-child(2) { opacity: 0; }
.pb-header[data-open] .pb-nav-toggle__bar:nth-child(3) { transform: translateY(-5.25px) rotate(-45deg); }

/* 抽屉导航 */
.pb-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-drawer);
  width: min(86vw, 342px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 78px 22px 32px;
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-right: 1px solid var(--line);
  overflow-y: auto;
  transform: translateX(-103%);
  visibility: hidden;
  transition: transform 0.3s var(--ease), visibility 0.3s var(--ease);
}
.pb-header[data-open] .pb-nav { transform: none; visibility: visible; }

.pb-scrim {
  position: fixed;
  inset: 0;
  z-index: var(--z-scrim);
  background: rgba(5, 8, 24, 0.72);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), visibility 0.3s var(--ease);
}
.pb-header[data-open] .pb-scrim { opacity: 1; visibility: visible; }

/* 轨道标签 */
.pb-nav__label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.pb-nav__label-en { color: var(--lime); }

/* 轨道条目 */
.pb-nav__list { display: flex; flex-direction: column; gap: 2px; margin-top: 14px; }
.pb-nav__item { min-width: 0; }
.pb-nav__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-left: 2px solid transparent;
  color: var(--mist);
  font-size: 15px;
  letter-spacing: 0.01em;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.pb-nav__idx {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: rgba(154, 166, 206, 0.6);
  transition: color var(--dur) var(--ease);
}
.pb-nav__text { flex: 1; min-width: 0; }
.pb-nav__dot { width: 5px; height: 5px; background: transparent; transition: background-color var(--dur) var(--ease); }
.pb-nav__link:hover { color: var(--paper); background: rgba(31, 42, 99, 0.6); }
.pb-nav__link:hover .pb-nav__dot { background: var(--lime); }
.pb-nav__link[aria-current="page"] {
  color: var(--ink-900);
  background: var(--lime);
  border-left-color: var(--lime-soft);
  font-weight: 600;
}
.pb-nav__link[aria-current="page"] .pb-nav__idx { color: rgba(10, 16, 48, 0.62); }
.pb-nav__link[aria-current="page"] .pb-nav__dot { background: var(--ink-900); }

/* 通道图例 */
.pb-nav__legend { margin-top: auto; }
.pb-legend { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 12px; margin-top: 12px; }
.pb-legend__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.pb-legend__chip { flex: 0 0 auto; width: 9px; height: 9px; }
.pb-legend__chip--lime { background: var(--lime); }
.pb-legend__chip--orange { background: var(--orange); }
.pb-legend__chip--red { background: var(--red); }
.pb-legend__chip--gold { background: var(--gold); }

.pb-nav__foot {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.pb-nav__cta { width: 100%; }
.pb-nav__note { font-size: 12.5px; line-height: 1.6; color: var(--mist); }

/* ---------- 6. 滚动进度 ---------- */
.pb-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: var(--z-progress);
  background: rgba(154, 166, 206, 0.14);
  pointer-events: none;
}
.pb-progress__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--lime), var(--lime-soft));
  transition: width 0.12s linear;
}

/* ---------- 7. 布局与排版组件 ---------- */
.pb-wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad-x); }
.pb-section { padding-block: clamp(44px, 6.5vw, 92px); }
.pb-section--tight { padding-block: clamp(28px, 3.6vw, 52px); }

.pb-grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.pb-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: clamp(18px, 2vw, 26px);
  background: var(--ink-800);
  border: 1px solid var(--line);
}
.pb-cell--ink { background: var(--ink-700); }
.pb-cell--feature { background: linear-gradient(150deg, var(--ink-700), var(--ink-900)); border-color: var(--line-strong); }
.pb-cell--paper { background: var(--paper); color: var(--ink-900); border-color: var(--paper); }
.pb-cell--paper h1, .pb-cell--paper h2, .pb-cell--paper h3, .pb-cell--paper h4 { color: var(--ink-900); }
.pb-cell--flush { padding: 0; overflow: hidden; }
.pb-cell--span2 { grid-column: span 2; }
.pb-cell--row2 { grid-row: span 2; }

.pb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}
.pb-eyebrow::before { content: ""; display: block; width: 22px; height: 1px; background: currentColor; }

.pb-h1 { font-family: var(--font-display); font-weight: 300; font-size: clamp(42px, 7.6vw, 104px); line-height: 0.96; letter-spacing: -0.03em; color: var(--paper); }
.pb-h2 { font-family: var(--font-display); font-weight: 400; font-size: clamp(26px, 4vw, 48px); line-height: 1.08; letter-spacing: -0.02em; color: var(--paper); }
.pb-h3 { font-family: var(--font-display); font-weight: 600; font-size: clamp(18px, 2.1vw, 24px); line-height: 1.3; letter-spacing: -0.01em; color: var(--paper); }
.pb-lead { font-size: clamp(16px, 1.6vw, 19px); line-height: 1.72; color: var(--mist); max-width: 44ch; }
.pb-num { font-family: var(--font-mono); font-weight: 500; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.pb-index { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--mist); }
.pb-rule { width: 100%; height: 1px; border: 0; background: var(--line); }
.pb-text-dim { color: var(--mist); }
.pb-text-lime { color: var(--lime); }

/* ---------- 8. 按钮 / 标签 ---------- */
.pb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--paper);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.pb-btn:hover { border-color: var(--lime); color: var(--lime); }
.pb-btn:active { transform: translateY(1px); }
.pb-btn--lime { background: var(--lime); border-color: var(--lime); color: var(--ink-900); }
.pb-btn--lime:hover { background: var(--lime-soft); border-color: var(--lime-soft); color: var(--ink-900); }
.pb-btn--paper { background: var(--paper); border-color: var(--paper); color: var(--ink-900); }
.pb-btn--paper:hover { background: #ffffff; border-color: #ffffff; color: var(--ink-900); }
.pb-btn--sm { padding: 8px 14px; font-size: 12.5px; }
.pb-btn--block { width: 100%; }

.pb-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 10.5px;
  line-height: 1.5;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}
.pb-tag--lime { color: var(--lime); border-color: rgba(182, 255, 59, 0.45); background: rgba(182, 255, 59, 0.1); }
.pb-tag--orange { color: var(--orange); border-color: rgba(255, 154, 43, 0.45); background: rgba(255, 154, 43, 0.1); }
.pb-tag--red { color: var(--red); border-color: rgba(255, 74, 92, 0.45); background: rgba(255, 74, 92, 0.1); }
.pb-tag--gold { color: var(--gold); border-color: rgba(242, 201, 76, 0.45); background: rgba(242, 201, 76, 0.1); }
.pb-tag--solid { background: var(--lime); border-color: var(--lime); color: var(--ink-900); }

.pb-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: var(--paper);
  border: 1px solid var(--ink-900);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.pb-label--lime { background: var(--lime); border-color: var(--ink-900); }
.pb-label--outline { background: transparent; border-color: var(--lime); color: var(--lime); }

/* ---------- 9. 图像容器（页面阶段放置图片） ---------- */
.pb-media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  background-color: var(--ink-700);
  background-image:
    linear-gradient(rgba(154, 166, 206, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(154, 166, 206, 0.12) 1px, transparent 1px);
  background-size: 28px 28px, 28px 28px;
}
.pb-media > img { width: 100%; height: 100%; object-fit: cover; }
.pb-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(150deg, rgba(182, 255, 59, 0.08), transparent 42%, rgba(10, 16, 48, 0.5));
}
.pb-media--wide { aspect-ratio: 21 / 9; }
.pb-media--tall { aspect-ratio: 3 / 4; }
.pb-media--square { aspect-ratio: 1 / 1; }
.pb-media__caption,
.pb-media__tag {
  position: absolute;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.5;
}
.pb-media__caption { left: 0; bottom: 0; padding: 8px 12px; background: var(--ink-900); color: var(--lime); }
.pb-media__tag { top: 0; left: 0; padding: 6px 10px; background: var(--paper); color: var(--ink-900); }
.pb-media__tag--orange { background: var(--orange); color: var(--ink-900); }
.pb-media__tag--red { background: var(--red); color: var(--paper); }

/* ---------- 10. 分段切换 ---------- */
.pb-tabs { display: flex; flex-direction: column; }
.pb-tabs__bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow-x: auto;
  scrollbar-width: none;
}
.pb-tabs__bar::-webkit-scrollbar { display: none; }
.pb-tabs__tab {
  flex: 0 0 auto;
  padding: 10px 18px;
  color: var(--mist);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: background-color 0.16s var(--ease), color 0.16s var(--ease);
}
.pb-tabs__tab:hover { color: var(--paper); background: rgba(182, 255, 59, 0.1); }
.pb-tabs__tab[aria-selected="true"] { background: var(--lime); color: var(--ink-900); }
.pb-tabs__panel { padding-top: clamp(18px, 2.4vw, 30px); }
.pb-tabs__panel[hidden] { display: none; }
.pb-tabs__panel:focus-visible { outline-offset: 6px; }

/* ---------- 11. 面包屑 / 正文容器 ---------- */
.pb-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}
.pb-crumb a { transition: color var(--dur) var(--ease); }
.pb-crumb a:hover { color: var(--lime); }
.pb-crumb__sep { color: rgba(154, 166, 206, 0.45); }
.pb-crumb [aria-current="page"] { color: var(--lime); }

.pb-prose { max-width: 70ch; font-size: 17px; line-height: 1.8; color: var(--text); }
.pb-prose > * + * { margin-top: 1.15em; }
.pb-prose h2 { margin-top: 1.7em; }
.pb-prose h3 { margin-top: 1.45em; }
.pb-prose ul,
.pb-prose ol { display: flex; flex-direction: column; gap: 0.5em; padding-left: 1.2em; }
.pb-prose ul { list-style: none; padding-left: 0; }
.pb-prose ul li { position: relative; padding-left: 1.1em; }
.pb-prose ul li::before { content: ""; position: absolute; left: 0; top: 0.78em; width: 6px; height: 1px; background: var(--lime); }
.pb-prose ol { list-style: decimal; }
.pb-prose a { color: var(--lime); border-bottom: 1px solid rgba(182, 255, 59, 0.45); }
.pb-prose a:hover { border-bottom-color: var(--lime); }
.pb-prose strong { color: var(--paper); font-weight: 600; }
.pb-prose blockquote { padding-left: 18px; border-left: 2px solid var(--lime); color: var(--paper); font-size: 19px; }
.pb-prose code { padding: 2px 6px; background: var(--ink-700); color: var(--lime-soft); font-family: var(--font-mono); font-size: 0.92em; }

/* ---------- 12. 显现 ---------- */
[data-reveal] { transition: opacity 0.24s var(--ease), transform 0.24s var(--ease); }
.js-on [data-reveal] { opacity: 0; transform: translateY(12px); }
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 13. 页脚 ---------- */
.pb-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 120px);
  background: linear-gradient(180deg, rgba(19, 26, 70, 0.6), rgba(10, 16, 48, 1));
  border-top: 1px solid var(--line);
  color: var(--mist);
}
.pb-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 3vw, 48px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: clamp(40px, 5vw, 72px) var(--pad-x) clamp(28px, 3vw, 40px);
}
.pb-footer__brand { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.pb-footer__mark {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.pb-footer__line { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--lime); }
.pb-footer__desc { max-width: 34ch; font-size: 14.5px; line-height: 1.7; color: var(--mist); }
.pb-footer__nav { display: grid; grid-template-columns: 1fr; gap: clamp(20px, 2.4vw, 32px); }
.pb-footer__col { display: flex; flex-direction: column; gap: 12px; }
.pb-footer__col-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper);
}
.pb-footer__list { display: flex; flex-direction: column; gap: 9px; }
.pb-footer__link {
  display: inline-block;
  font-size: 14.5px;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}
.pb-footer__link:hover { color: var(--lime); }
.pb-footer__hours { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; color: rgba(154, 166, 206, 0.75); }

.pb-footer__strip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 26px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 20px var(--pad-x);
  border-top: 1px solid var(--line);
  font-size: 13.5px;
}
.pb-footer__addr { color: var(--mist); }
.pb-footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text);
}
.pb-footer__sep { color: var(--line-strong); }

.pb-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 22px;
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding: 16px var(--pad-x) 34px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(154, 166, 206, 0.8);
}
.pb-footer__legal { display: flex; flex-wrap: wrap; gap: 18px; }
.pb-footer__base a:hover { color: var(--lime); }
.pb-footer__icp { color: var(--mist); }

/* ---------- 14. 小屏修正 ---------- */
@media (max-width: 639px) {
  .pb-cell--span2 { grid-column: auto; }
  .pb-cell--row2 { grid-row: auto; }
  .pb-tabs__bar { flex-wrap: nowrap; }
}
@media (max-width: 420px) {
  .pb-brand__sub { display: none; }
  .pb-nav-toggle__text { display: none; }
}
@media (min-width: 560px) {
  .pb-footer__nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 760px) {
  .pb-footer__inner { grid-template-columns: 1fr 1fr; }
}

/* ---------- 15. 桌面：左轨固定 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .pb-header { position: static; }

  .pb-rail {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail-w);
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 26px 22px 24px;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(19, 26, 70, 0.92), rgba(10, 16, 48, 0.99));
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    overflow-y: auto;
  }

  .pb-rail__top { display: block; max-width: none; margin: 0; padding: 0; }

  .pb-brand { margin-bottom: 24px; }

  .pb-nav-toggle { display: none; }

  .pb-nav {
    position: static;
    flex: 1;
    width: auto;
    height: auto;
    gap: 18px;
    padding: 0;
    background: none;
    border: 0;
    overflow: visible;
    transform: none;
    visibility: visible;
    transition: none;
  }

  .pb-scrim { display: none; }

  .pb-progress { left: var(--rail-w); }

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

  .pb-footer__inner { grid-template-columns: 1.15fr 2fr; }
}

/* ---------- 16. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .pb-skip { transition: none; }
  .js-on [data-reveal] { opacity: 1; transform: none; }
  [data-reveal] { transition: opacity 0.2s linear; }
}