/* =========================================================
   宝威体育 · 共享样式表  /assets/site.css
   侧边轨道 + 透明叠加导航 + 档案卡片体系
   ========================================================= */

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

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--bw-font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--bw-ink);
  background: var(--bw-cream);
  padding-left: var(--bw-rail);
  padding-top: var(--bw-bar-h);
  overflow-x: hidden;
}

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

/* ---------- 2. 设计令牌 ---------- */
:root {
  /* 色彩体系 */
  --bw-navy: #0B1F3A;
  --bw-blue: #123C6E;
  --bw-orange: #FF6B1A;
  --bw-red: #E23B2E;
  --bw-cream: #F5EFE3;
  --bw-ink: #2A1F1A;
  --bw-green: #1FA66A;
  --bw-silver: #C9D2DC;
  --bw-inkblue: #071426;

  /* 字体 */
  --bw-font-display: "Arial Black", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --bw-font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --bw-font-mono: "Roboto Mono", "SFMono-Regular", "Consolas", monospace;

  /* 布局 */
  --bw-rail: 0px;
  --bw-bar-h: 64px;
  --bw-maxw: 1440px;

  /* 线条与阴影 */
  --bw-line: rgba(42, 31, 26, 0.16);
  --bw-line-dark: rgba(201, 210, 220, 0.2);
  --bw-shadow: 0 18px 44px rgba(7, 20, 38, 0.2);
}

@media (min-width: 1180px) {
  :root { --bw-rail: 88px; --bw-bar-h: 72px; }
}

/* ---------- 3. 中文排版与通用元素 ---------- */
h1, h2, h3 { line-height: 1.15; }

b, strong { font-weight: 700; color: var(--bw-navy); }

::selection { background: var(--bw-orange); color: var(--bw-inkblue); }

:focus-visible {
  outline: 3px solid var(--bw-orange);
  outline-offset: 3px;
}

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

/* ---------- 4. 跳转链接 ---------- */
.bw-skip {
  position: absolute;
  left: 10px;
  top: -80px;
  z-index: 99;
  padding: 11px 18px;
  background: var(--bw-orange);
  color: var(--bw-inkblue);
  font-weight: 700;
  font-size: 14px;
  transition: top 0.2s ease;
}
.bw-skip:focus { top: 10px; }

/* ---------- 5. 左侧品牌轨道 ---------- */
.bw-rail { display: none; }

@media (min-width: 1180px) {
  .bw-rail {
    display: flex;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--bw-rail);
    z-index: 70;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0 18px;
    background: var(--bw-navy);
    border-right: 1px solid rgba(255, 107, 26, 0.32);
  }
}

.bw-rail__mark {
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -0.04em;
  color: var(--bw-orange);
  line-height: 1;
}

.bw-rail__word {
  writing-mode: vertical-rl;
  font-family: var(--bw-font-mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: rgba(201, 210, 220, 0.72);
  text-transform: uppercase;
  margin: auto 0;
}

.bw-rail__track {
  position: relative;
  display: block;
  width: 3px;
  height: 92px;
  background: rgba(201, 210, 220, 0.22);
  overflow: hidden;
}

.bw-rail__fill {
  position: absolute;
  left: 0; top: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(180deg, var(--bw-orange), var(--bw-red));
  transition: height 0.12s linear;
}

.bw-rail__num {
  font-family: var(--bw-font-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bw-orange);
  margin-top: 10px;
}

/* ---------- 6. 页头 ---------- */
.bw-header {
  position: fixed;
  top: 0;
  left: var(--bw-rail);
  right: 0;
  z-index: 60;
  background: linear-gradient(
    180deg,
    rgba(7, 20, 38, 0.94) 0%,
    rgba(7, 20, 38, 0.68) 62%,
    rgba(7, 20, 38, 0) 100%
  );
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.bw-header.is-solid {
  background: var(--bw-inkblue);
  border-bottom-color: var(--bw-orange);
  box-shadow: 0 14px 34px rgba(7, 20, 38, 0.42);
}

.bw-header__bar {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: var(--bw-maxw);
  min-height: var(--bw-bar-h);
  margin: 0 auto;
  padding: 6px 26px;
}

/* 品牌锁定 */
.bw-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  color: var(--bw-cream);
}

.bw-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  background: var(--bw-orange);
  color: var(--bw-inkblue);
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: 15px;
  letter-spacing: -0.03em;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
}

.bw-brand__text { display: block; }

.bw-brand__name {
  display: block;
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: 19px;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.bw-brand__tag {
  display: block;
  font-family: var(--bw-font-mono);
  font-size: 10.5px;
  line-height: 1.5;
  letter-spacing: 0.14em;
  color: var(--bw-silver);
}

/* 主导航 */
.bw-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

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

.bw-nav__link {
  display: block;
  padding: 9px 12px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--bw-silver);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.bw-nav__link:hover,
.bw-nav__link:focus-visible {
  color: #fff;
  background: rgba(255, 107, 26, 0.16);
}

.bw-nav__link[aria-current="page"] {
  color: #fff;
  border-bottom-color: var(--bw-orange);
  background: rgba(255, 107, 26, 0.1);
}

.bw-nav__utility {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
  padding-left: 12px;
  border-left: 1px solid var(--bw-line-dark);
}

.bw-nav__chip {
  padding: 6px 10px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bw-silver);
  border: 1px solid var(--bw-line-dark);
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.bw-nav__chip:hover,
.bw-nav__chip:focus-visible {
  color: var(--bw-inkblue);
  background: var(--bw-cream);
  border-color: var(--bw-cream);
}

.bw-header__acts {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
}

/* 汉堡按钮 */
.bw-burger {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  color: var(--bw-cream);
  border: 1px solid var(--bw-line-dark);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.bw-burger:hover { border-color: var(--bw-orange); background: rgba(255, 107, 26, 0.14); }

.bw-burger__box {
  position: relative;
  display: block;
  width: 20px;
  height: 14px;
}

.bw-burger__box span {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.bw-burger__box span:nth-child(1) { top: 0; }
.bw-burger__box span:nth-child(2) { top: 6px; }
.bw-burger__box span:nth-child(3) { top: 12px; }

.bw-burger[aria-expanded="true"] .bw-burger__box span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.bw-burger[aria-expanded="true"] .bw-burger__box span:nth-child(2) { opacity: 0; }
.bw-burger[aria-expanded="true"] .bw-burger__box span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.bw-burger__label {
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* 移动端导航抽屉 */
@media (max-width: 1179px) {
  .bw-burger { display: inline-flex; }
  .bw-header__acts { display: none; }
  .bw-header__bar { padding: 6px 18px; }

  .bw-nav {
    position: fixed;
    top: var(--bw-bar-h);
    right: 0;
    bottom: 0;
    width: min(86vw, 360px);
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 24px 24px 40px;
    background: var(--bw-navy);
    border-left: 1px solid rgba(255, 107, 26, 0.42);
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(102%);
    transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.32s;
  }

  .bw-nav[data-open="true"] {
    visibility: visible;
    transform: translateX(0);
  }

  .bw-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .bw-nav__link {
    padding: 15px 4px 15px 12px;
    font-size: 17px;
    border-bottom: 1px solid var(--bw-line-dark);
    border-left: 3px solid transparent;
  }

  .bw-nav__link[aria-current="page"] {
    border-bottom-color: var(--bw-line-dark);
    border-left-color: var(--bw-orange);
    background: rgba(255, 107, 26, 0.12);
  }

  .bw-nav__utility {
    flex-wrap: wrap;
    margin: 24px 0 0;
    padding: 0;
    border-left: 0;
  }
}

body.bw-nav-open { overflow: hidden; }

/* ---------- 7. 按钮体系 ---------- */
.bw-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 19px;
  font-family: var(--bw-font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  border: 2px solid transparent;
  transition: transform 0.18s ease, background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, box-shadow 0.2s ease;
}
.bw-btn:active { transform: translateY(1px); }

.bw-btn--solid {
  background: var(--bw-orange);
  color: var(--bw-inkblue);
  box-shadow: 0 5px 0 rgba(226, 59, 46, 0.4);
}
.bw-btn--solid:hover { background: #ff8138; box-shadow: 0 5px 0 rgba(226, 59, 46, 0.72); }

.bw-btn--ghost {
  background: transparent;
  color: var(--bw-cream);
  border-color: rgba(201, 210, 220, 0.55);
}
.bw-btn--ghost:hover {
  color: #fff;
  background: rgba(255, 107, 26, 0.16);
  border-color: var(--bw-orange);
}

.bw-btn--navy {
  background: var(--bw-navy);
  color: var(--bw-cream);
}
.bw-btn--navy:hover { background: var(--bw-blue); }

.bw-btn--line {
  background: transparent;
  color: var(--bw-navy);
  border-color: var(--bw-navy);
}
.bw-btn--line:hover { background: var(--bw-navy); color: var(--bw-cream); }

.bw-btn--sm { padding: 9px 13px; font-size: 13px; }

/* ---------- 8. 布局容器与章节 ---------- */
.bw-main { display: block; }

.bw-container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 26px;
}
.bw-container--wide { max-width: var(--bw-maxw); }

.bw-section { padding: 74px 0; position: relative; }
.bw-section--tight { padding: 46px 0; }
.bw-section--paper { background: var(--bw-cream); color: var(--bw-ink); }
.bw-section--navy { background: var(--bw-navy); color: var(--bw-cream); }
.bw-section--ink { background: var(--bw-inkblue); color: var(--bw-cream); }

.bw-grid { display: grid; gap: 22px; }
.bw-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.bw-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bw-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 980px) {
  .bw-grid--3, .bw-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .bw-section { padding: 52px 0; }
  .bw-container { padding: 0 18px; }
  .bw-grid--2, .bw-grid--3, .bw-grid--4 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 9. 标题与文本 ---------- */
.bw-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bw-orange);
}
.bw-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--bw-orange);
}

.bw-title {
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--bw-navy);
}
.bw-title--xl { font-size: clamp(2.4rem, 6.6vw, 4.8rem); }
.bw-title--lg { font-size: clamp(1.9rem, 4.2vw, 3rem); }
.bw-title--md { font-size: clamp(1.35rem, 2.6vw, 1.95rem); }

.bw-section--navy .bw-title,
.bw-section--ink .bw-title { color: var(--bw-cream); }

.bw-lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.85;
  color: rgba(42, 31, 26, 0.78);
}
.bw-section--navy .bw-lede,
.bw-section--ink .bw-lede { color: rgba(245, 239, 227, 0.82); }

.bw-note {
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(42, 31, 26, 0.62);
}
.bw-section--navy .bw-note,
.bw-section--ink .bw-note { color: rgba(201, 210, 220, 0.72); }

/* 正文散文 */
.bw-prose { max-width: 74ch; }
.bw-prose > * + * { margin-top: 1.05em; }
.bw-prose ul > li {
  position: relative;
  padding-left: 20px;
}
.bw-prose ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 8px;
  background: var(--bw-orange);
}
.bw-prose a {
  color: var(--bw-blue);
  border-bottom: 1px solid var(--bw-orange);
}
.bw-prose a:hover { background: rgba(255, 107, 26, 0.16); }

/* ---------- 10. 档案卡片 ---------- */
.bw-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 24px;
  background: #FFFDF7;
  border: 2px solid var(--bw-ink);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.bw-card::after {
  content: "";
  position: absolute;
  left: -2px;
  bottom: -2px;
  width: 0;
  height: 0;
  border-left: 18px solid var(--bw-orange);
  border-top: 18px solid transparent;
}
.bw-card:hover {
  transform: translateY(-4px);
  border-color: var(--bw-navy);
  box-shadow: var(--bw-shadow);
}
.bw-card--dark {
  background: var(--bw-navy);
  border-color: var(--bw-blue);
  color: var(--bw-cream);
}
.bw-card__title {
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: 1.15rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--bw-navy);
}
.bw-card--dark .bw-card__title { color: var(--bw-cream); }
.bw-card__meta {
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(42, 31, 26, 0.6);
}
.bw-card--dark .bw-card__meta { color: var(--bw-silver); }

/* ---------- 11. 标签 / 状态 ---------- */
.bw-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  font-family: var(--bw-font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bw-navy);
  border: 1px solid currentColor;
}
.bw-tag--live { color: var(--bw-cream); background: var(--bw-red); border-color: var(--bw-red); }
.bw-tag--v4 { color: var(--bw-inkblue); background: var(--bw-orange); border-color: var(--bw-orange); }
.bw-tag--ok { color: #fff; background: var(--bw-green); border-color: var(--bw-green); }
.bw-tag--ghost { color: var(--bw-silver); border-color: var(--bw-line-dark); }

/* ---------- 12. 数字与比分 ---------- */
.bw-num {
  font-family: var(--bw-font-mono);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.bw-score {
  font-family: var(--bw-font-mono);
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1;
  color: var(--bw-orange);
  font-variant-numeric: tabular-nums;
}

/* 数据条 */
.bw-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 15px 16px;
  background: rgba(11, 31, 58, 0.06);
  border-left: 3px solid var(--bw-orange);
}
.bw-stat__v {
  font-family: var(--bw-font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  line-height: 1;
  color: var(--bw-navy);
  font-variant-numeric: tabular-nums;
}
.bw-stat__k {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: rgba(42, 31, 26, 0.62);
}
.bw-section--navy .bw-stat,
.bw-section--ink .bw-stat { background: rgba(245, 239, 227, 0.08); }
.bw-section--navy .bw-stat__v,
.bw-section--ink .bw-stat__v { color: var(--bw-cream); }
.bw-section--navy .bw-stat__k,
.bw-section--ink .bw-stat__k { color: rgba(201, 210, 220, 0.72); }

/* ---------- 13. 图片容器基础规则 ---------- */
.bw-media {
  position: relative;
  display: block;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bw-navy) 0%, var(--bw-blue) 60%, var(--bw-inkblue) 100%);
  border: 2px solid var(--bw-ink);
}
.bw-media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.bw-media--16x9 { aspect-ratio: 16 / 9; }
.bw-media--4x3 { aspect-ratio: 4 / 3; }
.bw-media--1x1 { aspect-ratio: 1 / 1; }
.bw-media--3x4 { aspect-ratio: 3 / 4; }

.bw-media[data-placeholder]::after {
  content: attr(data-placeholder);
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 12px;
  font-family: var(--bw-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: rgba(245, 239, 227, 0.72);
  pointer-events: none;
}
.bw-media[data-placeholder] {
  background-image:
    repeating-linear-gradient(135deg, rgba(245, 239, 227, 0.07) 0 2px, transparent 2px 14px),
    linear-gradient(135deg, var(--bw-navy) 0%, var(--bw-blue) 60%, var(--bw-inkblue) 100%);
}

/* ---------- 14. 面包屑 ---------- */
.bw-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(42, 31, 26, 0.6);
}
.bw-breadcrumb li { display: flex; align-items: center; gap: 8px; }
.bw-breadcrumb li + li::before { content: "/"; color: var(--bw-orange); }
.bw-breadcrumb a { color: var(--bw-navy); border-bottom: 1px solid transparent; }
.bw-breadcrumb a:hover { border-bottom-color: var(--bw-orange); }
.bw-section--navy .bw-breadcrumb,
.bw-section--ink .bw-breadcrumb { color: rgba(201, 210, 220, 0.7); }
.bw-section--navy .bw-breadcrumb a,
.bw-section--ink .bw-breadcrumb a { color: var(--bw-cream); }

/* ---------- 15. 时间轴 ---------- */
.bw-timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--bw-line);
}
.bw-timeline__item {
  position: relative;
  padding-bottom: 26px;
}
.bw-timeline__item:last-child { padding-bottom: 0; }
.bw-timeline__item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 9px;
  width: 10px;
  height: 10px;
  background: var(--bw-orange);
}
.bw-section--navy .bw-timeline,
.bw-section--ink .bw-timeline { border-left-color: var(--bw-line-dark); }

/* ---------- 16. 滚动显现 ---------- */
.bw-reveal { opacity: 1; transform: none; }

.js .bw-reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.js .bw-reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 17. 页脚 ---------- */
.bw-footer {
  position: relative;
  background: var(--bw-inkblue);
  color: var(--bw-silver);
  border-top: 3px solid var(--bw-orange);
}

.bw-footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 34px;
  max-width: var(--bw-maxw);
  margin: 0 auto;
  padding: 58px 26px 34px;
}

.bw-footer__brand .bw-brand { margin-bottom: 16px; }

.bw-footer__desc {
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(201, 210, 220, 0.78);
}

.bw-footer__col { min-width: 0; }

.bw-footer__title {
  margin-bottom: 16px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bw-orange);
}

.bw-footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bw-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--bw-silver);
  transition: color 0.2s ease;
}
.bw-footer__link::before {
  content: "";
  width: 10px;
  height: 1px;
  background: var(--bw-orange);
  transition: width 0.2s ease;
}
.bw-footer__link:hover { color: #fff; }
.bw-footer__link:hover::before { width: 18px; }

.bw-footer__list--plain { gap: 14px; }

.bw-footer__k {
  display: block;
  font-family: var(--bw-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(201, 210, 220, 0.55);
}

.bw-footer__v {
  display: block;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 239, 227, 0.92);
  word-break: break-word;
}

.bw-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  max-width: var(--bw-maxw);
  margin: 0 auto;
  padding: 18px 26px 30px;
  border-top: 1px solid var(--bw-line-dark);
  font-family: var(--bw-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: rgba(201, 210, 220, 0.66);
}

.bw-footer__copy,
.bw-footer__icp { margin: 0; }

@media (max-width: 1023px) {
  .bw-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding: 44px 22px 26px;
  }
  .bw-footer__brand { grid-column: 1 / -1; }
  .bw-footer__bottom { padding: 16px 22px 26px; }
}

@media (max-width: 620px) {
  .bw-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .bw-footer__desc { max-width: none; }
}

/* ---------- 18. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .js .bw-reveal {
    opacity: 1;
    transform: none;
  }

  .bw-rail__fill { transition: none; }
}