/* ============================================================
   完美体育主站 · 共享样式 /assets/site.css
   主题：夜间赛场指挥中心 · 七轮纵向轨道
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }

ul, ol { padding: 0; list-style: none; }

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; }

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

table { border-collapse: collapse; width: 100%; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --bw-ink: #05140F;
  --bw-console: #0A0E0C;
  --bw-stand: #0E2A20;
  --bw-cyan: #2DF5C4;
  --bw-orange: #FF7A1A;
  --bw-silver: #C7D2CC;
  --bw-white: #F2F8F5;
  --bw-line: #1E3830;
  --bw-odds: #5BE0FF;

  --bw-shell: 1320px;
  --bw-shell-narrow: 780px;
  --bw-gutter: clamp(16px, 4vw, 44px);
  --bw-radius: 18px;
  --bw-radius-pill: 999px;

  --bw-font-display: Oswald, "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --bw-font-data: "JetBrains Mono", "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --bw-font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;

  --bw-shadow-float: 0 26px 60px -34px rgba(0, 0, 0, 0.95);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--bw-ink);
  background-image:
    radial-gradient(1100px 620px at 84% -10%, rgba(45, 245, 196, 0.10), transparent 62%),
    radial-gradient(760px 520px at 2% 6%, rgba(91, 224, 255, 0.07), transparent 60%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.016) 0 1px, transparent 1px 96px);
  background-attachment: fixed;
  color: var(--bw-white);
  font-family: var(--bw-font-body);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--bw-font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

p { color: rgba(199, 210, 204, 0.86); }

strong { color: var(--bw-white); font-weight: 700; }

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

/* ---------- 4. 容器与章节 ---------- */
.bw-shell {
  width: min(var(--bw-shell), 100% - var(--bw-gutter) * 2);
  margin-inline: auto;
}

.bw-section {
  position: relative;
  padding-block: clamp(44px, 7vw, 92px);
}

.bw-section--narrow > .bw-shell {
  width: min(var(--bw-shell-narrow), 100% - var(--bw-gutter) * 2);
}

.bw-section--console {
  background: var(--bw-console);
  border-block: 1px solid var(--bw-line);
}

.bw-section--stand {
  background: linear-gradient(180deg, var(--bw-stand) 0%, rgba(5, 20, 15, 0.9) 100%);
  border-block: 1px solid var(--bw-line);
}

/* ---------- 5. 标题与文本 ---------- */
.bw-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--bw-font-data);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bw-cyan);
}

.bw-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--bw-cyan);
}

.bw-h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); font-weight: 500; }
.bw-h2 { font-size: clamp(1.7rem, 3.4vw, 2.9rem); font-weight: 500; }
.bw-h3 { font-size: clamp(1.1rem, 1.6vw, 1.4rem); font-weight: 600; }

.bw-lead {
  max-width: 60ch;
  font-size: clamp(1.02rem, 1.4vw, 1.2rem);
  line-height: 1.75;
  color: rgba(242, 248, 245, 0.86);
}

.bw-text { max-width: 66ch; color: rgba(199, 210, 204, 0.84); }

.bw-rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, var(--bw-line), rgba(45, 245, 196, 0.35), var(--bw-line));
}

.bw-link {
  color: var(--bw-cyan);
  border-bottom: 1px solid rgba(45, 245, 196, 0.35);
}

.bw-link:hover { border-bottom-color: var(--bw-cyan); }

/* ---------- 6. 按钮 ---------- */
.bw-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.62rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--bw-radius-pill);
  font-family: var(--bw-font-body);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.bw-btn--signal {
  background: var(--bw-orange);
  color: #1A0B02;
  box-shadow: 0 14px 32px -20px rgba(255, 122, 26, 0.95);
}

.bw-btn--signal:hover { background: #FF8F3D; transform: translateY(-1px); }

.bw-btn--ghost {
  background: rgba(5, 20, 15, 0.5);
  color: var(--bw-silver);
  border-color: var(--bw-line);
}

.bw-btn--ghost:hover {
  color: var(--bw-white);
  border-color: rgba(45, 245, 196, 0.5);
  background: rgba(45, 245, 196, 0.08);
}

.bw-btn--block { display: flex; width: 100%; }

/* ---------- 7. 跳过链接 ---------- */
.bw-skip {
  position: absolute;
  left: 50%;
  top: -70px;
  z-index: 200;
  transform: translateX(-50%);
  padding: 0.6rem 1.2rem;
  border-radius: var(--bw-radius-pill);
  background: var(--bw-cyan);
  color: #04140F;
  font-size: 0.875rem;
  font-weight: 700;
  transition: top 0.2s ease;
}

.bw-skip:focus { top: 12px; }

/* ---------- 8. 页头：悬浮胶囊 ---------- */
.bw-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: 12px var(--bw-gutter) 8px;
}

.bw-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 20, 15, 0.97) 0%, rgba(5, 20, 15, 0.78) 58%, rgba(5, 20, 15, 0) 100%);
}

.bw-progress {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  overflow: hidden;
  background: rgba(199, 210, 204, 0.1);
}

.bw-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--bw-cyan), var(--bw-orange));
  transition: width 0.12s linear;
}

.bw-capsule {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  width: min(var(--bw-shell), 100%);
  margin-inline: auto;
  padding: 9px 10px 9px 16px;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-pill);
  background: linear-gradient(180deg, rgba(14, 42, 32, 0.85), rgba(10, 14, 12, 0.93));
  box-shadow: var(--bw-shadow-float), inset 0 1px 0 rgba(45, 245, 196, 0.08);
  backdrop-filter: blur(10px);
}

.bw-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--bw-white);
}

.bw-brand__mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 34px; height: 34px;
  border: 1px solid rgba(45, 245, 196, 0.55);
  border-radius: 10px;
  background: rgba(45, 245, 196, 0.08);
  box-shadow: inset 0 0 18px -6px rgba(45, 245, 196, 0.75);
  font-family: var(--bw-font-data);
  font-size: 1rem;
  font-weight: 700;
  color: var(--bw-cyan);
}

.bw-brand__text { display: flex; flex-direction: column; min-width: 0; line-height: 1.18; }

.bw-brand__name {
  font-family: var(--bw-font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  white-space: nowrap;
}

.bw-brand__tag {
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bw-silver);
  opacity: 0.78;
  white-space: nowrap;
}

.bw-nav { margin-left: auto; }

.bw-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.8vw, 10px);
}

.bw-nav__link {
  position: relative;
  display: inline-block;
  padding: 0.5rem 0.72rem;
  border-radius: var(--bw-radius-pill);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--bw-silver);
  transition: color 0.18s ease, background-color 0.18s ease;
}

.bw-nav__link::after {
  content: "";
  position: absolute;
  left: 0.72rem; right: 0.72rem; bottom: 0.28rem;
  height: 1px;
  background: var(--bw-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease, background 0.2s ease;
}

.bw-nav__link:hover { color: var(--bw-white); background: rgba(45, 245, 196, 0.07); }
.bw-nav__link:hover::after { transform: scaleX(1); }

.bw-nav__link[aria-current="page"] {
  color: var(--bw-cyan);
  background: rgba(45, 245, 196, 0.1);
}

.bw-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: linear-gradient(90deg, var(--bw-cyan), var(--bw-orange));
}

.bw-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 0;
}

.bw-navtoggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-pill);
  background: rgba(5, 20, 15, 0.6);
  color: var(--bw-white);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  cursor: pointer;
}

.bw-navtoggle__bars { position: relative; display: block; width: 16px; height: 10px; }

.bw-navtoggle__bars::before,
.bw-navtoggle__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: var(--bw-cyan);
  transition: transform 0.2s ease, top 0.2s ease;
}

.bw-navtoggle__bars::before { top: 0; }
.bw-navtoggle__bars::after { top: 8px; }

.bw-navtoggle__label { font-family: var(--bw-font-data); }

.bw-header[data-open="true"] .bw-navtoggle__bars::before { top: 4px; transform: rotate(45deg); }
.bw-header[data-open="true"] .bw-navtoggle__bars::after { top: 4px; transform: rotate(-45deg); }

/* ---------- 9. 页脚 ---------- */
.bw-footer {
  position: relative;
  margin-top: clamp(56px, 9vw, 120px);
  border-top: 1px solid var(--bw-line);
  background: linear-gradient(180deg, rgba(10, 14, 12, 0.72) 0%, var(--bw-ink) 44%), var(--bw-console);
  color: var(--bw-silver);
}

.bw-footer__rail {
  overflow-x: auto;
  padding: clamp(14px, 2vw, 22px) max(var(--bw-gutter), calc((100% - var(--bw-shell)) / 2));
  border-bottom: 1px solid var(--bw-line);
  background:
    repeating-linear-gradient(90deg, rgba(45, 245, 196, 0.05) 0 1px, transparent 1px 60px),
    var(--bw-console);
  scrollbar-width: thin;
}

.bw-rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(10px, 2.5vw, 28px);
  width: min(100%, var(--bw-shell));
  min-width: 640px;
  margin-inline: auto;
}

.bw-rail__node {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--bw-font-data);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(199, 210, 204, 0.62);
  white-space: nowrap;
}

.bw-rail__dot {
  width: 7px; height: 7px;
  border: 1px solid var(--bw-cyan);
  border-radius: 50%;
  background: transparent;
}

.bw-rail__node:nth-child(7) { color: var(--bw-white); }

.bw-rail__node:nth-child(7) .bw-rail__dot {
  border-color: var(--bw-orange);
  background: var(--bw-orange);
  box-shadow: 0 0 14px rgba(255, 122, 26, 0.85);
}

.bw-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 64px);
  padding-block: clamp(32px, 5vw, 64px);
}

.bw-footer__desc {
  max-width: 46ch;
  margin-top: 14px;
  font-size: 0.95rem;
  color: rgba(199, 210, 204, 0.8);
}

.bw-brand--footer .bw-brand__name { font-size: 1.05rem; }

.bw-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 22px;
}

.bw-footer__link {
  display: inline-block;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-pill);
  font-size: 0.82rem;
  color: var(--bw-silver);
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.bw-footer__link:hover {
  color: #04140F;
  background: var(--bw-cyan);
  border-color: var(--bw-cyan);
}

.bw-footer__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(20px, 3vw, 40px);
}

.bw-footer__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--bw-line);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--bw-white);
}

.bw-contact { display: grid; gap: 12px; }

.bw-contact__item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 0.9rem;
}

.bw-contact__key {
  font-family: var(--bw-font-data);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bw-cyan);
}

.bw-contact__val { color: var(--bw-white); word-break: break-word; }

.bw-note {
  font-size: 0.85rem;
  line-height: 1.78;
  color: rgba(199, 210, 204, 0.74);
}

.bw-note + .bw-note { margin-top: 12px; }

.bw-note__mark {
  margin-right: 6px;
  font-family: var(--bw-font-data);
  color: var(--bw-orange);
}

.bw-note--muted { color: rgba(199, 210, 204, 0.55); }

.bw-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 22px;
  padding: 18px max(var(--bw-gutter), calc((100% - var(--bw-shell)) / 2)) 28px;
  border-top: 1px solid var(--bw-line);
  font-family: var(--bw-font-data);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: rgba(199, 210, 204, 0.66);
}

.bw-footer__icp { color: rgba(199, 210, 204, 0.66); }

/* ---------- 10. 卡片 / 数据 / 网格 ---------- */
.bw-grid { display: grid; gap: clamp(16px, 2.5vw, 30px); }

.bw-grid--split { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }
.bw-grid--trio { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bw-grid--bracket { grid-template-columns: repeat(7, minmax(0, 1fr)); }

.bw-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius);
  background: linear-gradient(180deg, rgba(14, 42, 32, 0.55), rgba(10, 14, 12, 0.86));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.bw-card--float {
  transform: translateY(-4px);
  box-shadow: var(--bw-shadow-float);
}

.bw-card--signal { border-color: rgba(255, 122, 26, 0.45); }

.bw-card__label {
  font-family: var(--bw-font-data);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bw-cyan);
}

.bw-card__title { margin-top: 0.5rem; font-size: 1.15rem; }

.bw-metric { display: flex; flex-direction: column; gap: 4px; }

.bw-metric__value {
  font-family: var(--bw-font-data);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bw-white);
}

.bw-metric__value--cyan { color: var(--bw-cyan); }
.bw-metric__value--signal { color: var(--bw-orange); }
.bw-metric__value--odds { color: var(--bw-odds); }

.bw-metric__label {
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(199, 210, 204, 0.64);
}

.bw-list__item {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--bw-line);
  color: rgba(199, 210, 204, 0.86);
}

.bw-list__item::before {
  content: "—";
  flex: 0 0 auto;
  font-family: var(--bw-font-data);
  color: var(--bw-cyan);
}

.bw-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-pill);
  font-family: var(--bw-font-data);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bw-silver);
}

.bw-tag--signal { border-color: rgba(255, 122, 26, 0.5); color: var(--bw-orange); }

/* ---------- 11. 面包屑 ---------- */
.bw-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--bw-font-data);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(199, 210, 204, 0.58);
}

.bw-crumbs__link { color: var(--bw-silver); }
.bw-crumbs__link:hover { color: var(--bw-cyan); }
.bw-crumbs__sep { color: rgba(45, 245, 196, 0.55); }

/* ---------- 12. 标签页 ---------- */
.bw-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: max-content;
  max-width: 100%;
  padding: 6px;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius-pill);
  background: rgba(10, 14, 12, 0.62);
}

.bw-tab {
  padding: 0.55rem 1.05rem;
  border-radius: var(--bw-radius-pill);
  background: transparent;
  color: var(--bw-silver);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.bw-tab:hover { color: var(--bw-white); background: rgba(45, 245, 196, 0.08); }

.bw-tab[aria-selected="true"] {
  background: var(--bw-cyan);
  color: #04140F;
  font-weight: 700;
}

.bw-tabs__panel { padding-top: clamp(18px, 3vw, 30px); }
.bw-tabs__panel[hidden] { display: none; }

/* ---------- 13. 图片容器（供页面阶段放置图片） ---------- */
.bw-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--bw-line);
  border-radius: var(--bw-radius);
  background: linear-gradient(140deg, var(--bw-stand) 0%, var(--bw-console) 72%);
}

.bw-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 20, 15, 0) 42%, rgba(5, 20, 15, 0.86) 100%);
}

.bw-media img { width: 100%; height: 100%; object-fit: cover; }

.bw-media--hero { aspect-ratio: 16 / 9; }
.bw-media--wide { aspect-ratio: 21 / 9; }
.bw-media--tall { aspect-ratio: 4 / 5; }
.bw-media--square { aspect-ratio: 1 / 1; }

.bw-media__caption {
  position: absolute;
  left: clamp(14px, 2vw, 22px);
  right: clamp(14px, 2vw, 22px);
  bottom: clamp(14px, 2vw, 20px);
  z-index: 2;
  font-family: var(--bw-font-data);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(242, 248, 245, 0.82);
}

/* ---------- 14. 显现动效 ---------- */
[data-reveal] { opacity: 1; transform: none; }

.bw-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.bw-js [data-reveal][data-revealed="true"] { opacity: 1; transform: none; }

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1023px) {
  .bw-navtoggle { display: inline-flex; }

  .bw-header__actions { margin-left: auto; }

  .bw-nav {
    display: none;
    position: absolute;
    left: 0; right: 0;
    top: calc(100% + 8px);
    margin: 0;
    padding: 12px;
    border: 1px solid var(--bw-line);
    border-radius: var(--bw-radius);
    background: linear-gradient(180deg, rgba(14, 42, 32, 0.98), rgba(10, 14, 12, 0.99));
    box-shadow: var(--bw-shadow-float);
  }

  .bw-header[data-open="true"] .bw-nav {
    display: block;
    animation: bw-drop 0.2s ease-out both;
  }

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

  .bw-nav__link {
    display: block;
    padding: 0.78rem 0.8rem;
    border-bottom: 1px solid var(--bw-line);
    border-radius: 10px;
  }

  .bw-nav__link::after { display: none; }

  .bw-nav__list li:last-child .bw-nav__link { border-bottom: 0; }

  .bw-grid--split,
  .bw-grid--trio { grid-template-columns: minmax(0, 1fr); }

  .bw-grid--bracket { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }

  .bw-footer__inner { grid-template-columns: minmax(0, 1fr); }
}

@keyframes bw-drop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 767px) {
  .bw-h1 { font-size: clamp(2.2rem, 11vw, 3.2rem); }
  .bw-capsule { padding: 8px 8px 8px 12px; gap: 8px; }
  .bw-header__actions .bw-btn { padding: 0.55rem 0.9rem; font-size: 0.8rem; }
}

@media (max-width: 639px) {
  .bw-brand__tag { display: none; }
}

@media (max-width: 559px) {
  .bw-header__actions .bw-btn--ghost { display: none; }
  .bw-footer__base { justify-content: flex-start; }
}

/* ---------- 16. 减弱动效 ---------- */
@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;
  }

  [data-reveal] { opacity: 1 !important; transform: none !important; }
}