/* ==========================================================================
   万博体育汇 · 全站共享样式  /assets/site.css
   构件：跳转链接 / 双层页头 / 移动导航 / 阅读进度 / 斜切页脚 / 通用组件
   基调：曜石黑底 + 精密网格 + 红金主调 + 青紫撞色点缀 + 锐利直角
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: #0A0B0D;
  scroll-padding-top: 124px;
}
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
::selection { background: #E4322B; color: #FFFFFF; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  --wb-ink: #0A0B0D;
  --wb-panel: #14161A;
  --wb-line: #23262D;
  --wb-red: #E4322B;
  --wb-red-deep: #8C1A15;
  --wb-gold: #F2C14E;
  --wb-cyan: #00E5D0;
  --wb-violet: #7B4FE0;
  --wb-bone: #F5F3EE;
  --wb-mist: #9AA0A6;

  --wb-shell: 1280px;
  --wb-gutter: clamp(16px, 4vw, 44px);
  --wb-radius: 2px;
  --wb-ease: cubic-bezier(0.2, 0.7, 0.3, 1);

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

  --wb-hair: 1px solid var(--wb-line);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background: var(--wb-ink);
  color: var(--wb-bone);
  font-family: var(--wb-font);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
strong, b { font-weight: 800; }
:focus-visible {
  outline: 2px solid var(--wb-cyan);
  outline-offset: 3px;
}

/* ---------- 4. 布局工具 ---------- */
.wb-shell {
  width: 100%;
  max-width: var(--wb-shell);
  margin-inline: auto;
  padding-inline: var(--wb-gutter);
}
.wb-main { display: block; }
.wb-section { padding-block: clamp(48px, 7vw, 100px); }
.wb-section--tight { padding-block: clamp(26px, 4vw, 52px); }
.wb-section--line { border-top: var(--wb-hair); }

.wb-asym {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: clamp(18px, 3vw, 48px);
  align-items: start;
}
.wb-grid { display: grid; gap: clamp(14px, 2vw, 24px); }
.wb-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.wb-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.wb-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.wb-rule { height: 1px; background: var(--wb-line); }
.wb-slash {
  display: block;
  height: clamp(18px, 3vw, 36px);
  background: linear-gradient(103deg, rgba(140, 26, 21, 0.55) 0%, rgba(123, 79, 224, 0.30) 42%, rgba(10, 11, 13, 0) 74%);
  border-top: 1px solid var(--wb-line);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0 100%);
}

/* ---------- 5. 跳转链接 ---------- */
.wb-skip {
  position: fixed;
  left: var(--wb-gutter);
  top: -120px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--wb-gold);
  color: var(--wb-ink);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
  border-radius: var(--wb-radius);
  transition: top 0.22s var(--wb-ease);
}
.wb-skip:focus { top: 10px; }

/* ---------- 6. 页头：双层结构 ---------- */
.wb-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: var(--wb-ink);
  border-bottom: 1px solid var(--wb-line);
}

/* 6.1 品牌层 */
.wb-header__brand {
  max-height: 148px;
  overflow: hidden;
  background:
    linear-gradient(104deg, rgba(140, 26, 21, 0.78) 0%, rgba(140, 26, 21, 0.30) 30%, rgba(123, 79, 224, 0.28) 60%, rgba(10, 11, 13, 0) 88%),
    var(--wb-ink);
  border-bottom: 1px solid var(--wb-line);
  transition: max-height 0.4s var(--wb-ease), opacity 0.28s var(--wb-ease), border-color 0.3s linear;
}
.wb-header.is-compact .wb-header__brand {
  max-height: 0;
  opacity: 0;
  border-color: transparent;
}
.wb-brand-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 16px;
}
.wb-brand { display: inline-flex; align-items: center; gap: 14px; }
.wb-brand__mark {
  position: relative;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  background: linear-gradient(150deg, var(--wb-red) 0%, #B31F1A 46%, var(--wb-violet) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}
.wb-brand__mark i {
  position: absolute;
  inset: 11px;
  display: block;
  background: var(--wb-ink);
  clip-path: polygon(0 0, 100% 0, 100% 56%, 56% 100%, 0 100%);
}
.wb-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.wb-brand__name {
  font-size: clamp(19px, 2vw, 23px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--wb-bone);
}
.wb-brand__desc {
  margin-top: 5px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--wb-mist);
}
.wb-brand-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
}
.wb-brand-meta__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--wb-line);
  background: rgba(10, 11, 13, 0.55);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--wb-mist);
  white-space: nowrap;
}
.wb-brand-meta__item--live::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--wb-cyan);
  animation: wb-pulse 3s ease-in-out infinite;
}
.wb-brand-meta__key {
  font-family: var(--wb-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--wb-gold);
}
@keyframes wb-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(0, 229, 208, 0.16); }
  50% { box-shadow: 0 0 0 8px rgba(0, 229, 208, 0); }
}

/* 6.2 栏目层 */
.wb-header__nav { position: relative; background: var(--wb-ink); }
.wb-nav-band {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 62px;
}
.wb-nav { flex: 1 1 auto; min-width: 0; }
.wb-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.2vw, 18px);
}
.wb-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  padding: 8px 2px 9px;
  color: var(--wb-mist);
  transition: color 0.22s var(--wb-ease);
}
.wb-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--wb-red), var(--wb-gold));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s var(--wb-ease);
}
.wb-nav__link:hover,
.wb-nav__link:focus-visible { color: var(--wb-bone); }
.wb-nav__link:hover::after,
.wb-nav__link:focus-visible::after { transform: scaleX(1); }
.wb-nav__link[aria-current="page"] { color: var(--wb-bone); }
.wb-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.wb-nav__cn {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.wb-nav__en {
  font-family: var(--wb-mono);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(154, 160, 166, 0.65);
  transition: color 0.22s var(--wb-ease);
}
.wb-nav__link:hover .wb-nav__en,
.wb-nav__link[aria-current="page"] .wb-nav__en { color: var(--wb-cyan); }

/* 6.3 主行动按钮 */
.wb-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  background: var(--wb-red);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: var(--wb-radius);
  box-shadow: inset 0 0 0 1px rgba(228, 50, 43, 0.4);
  white-space: nowrap;
  transition: background 0.25s var(--wb-ease), box-shadow 0.25s var(--wb-ease), transform 0.25s var(--wb-ease);
}
.wb-cta::after {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--wb-gold);
  transition: width 0.25s var(--wb-ease);
}
.wb-cta:hover,
.wb-cta:focus-visible {
  background: linear-gradient(100deg, var(--wb-red) 0%, var(--wb-red-deep) 58%, var(--wb-violet) 100%);
  box-shadow: 0 0 0 1px rgba(123, 79, 224, 0.6), 0 12px 28px -14px rgba(228, 50, 43, 0.95);
  transform: translateY(-2px);
}
.wb-cta:hover::after,
.wb-cta:focus-visible::after { width: 26px; }

/* 6.4 移动导航开关 */
.wb-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  color: var(--wb-bone);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: border-color 0.22s var(--wb-ease), color 0.22s var(--wb-ease);
}
.wb-nav-toggle:hover { border-color: var(--wb-cyan); color: var(--wb-cyan); }
.wb-nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}
.wb-nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s var(--wb-ease), opacity 0.2s var(--wb-ease);
}
.wb-nav-toggle[aria-expanded="true"] .wb-nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.wb-nav-toggle[aria-expanded="true"] .wb-nav-toggle__bars i:nth-child(2) { opacity: 0; }
.wb-nav-toggle[aria-expanded="true"] .wb-nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.wb-nav-toggle__label { font-family: var(--wb-mono); letter-spacing: 0.14em; }

/* 6.5 阅读进度 */
.wb-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--wb-line);
  overflow: hidden;
}
.wb-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--wb-red) 0%, var(--wb-gold) 55%, var(--wb-cyan) 100%);
  transform: scaleX(0);
  transform-origin: left center;
}

/* ---------- 7. 页脚 ---------- */
.wb-footer {
  margin-top: clamp(56px, 8vw, 120px);
  background: var(--wb-panel);
  border-top: 1px solid var(--wb-line);
  color: var(--wb-mist);
  font-size: 14px;
}
.wb-footer__scan {
  height: 5px;
  background: linear-gradient(90deg, var(--wb-red) 0%, var(--wb-gold) 38%, var(--wb-cyan) 68%, var(--wb-violet) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 58%);
}
.wb-footer__inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.7fr) repeat(3, minmax(140px, 1fr));
  gap: clamp(24px, 3.2vw, 56px);
  padding-block: clamp(36px, 5vw, 64px);
}
.wb-footer__brand {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--wb-bone);
}
.wb-footer__line {
  max-width: 34ch;
  margin-top: 12px;
  line-height: 1.8;
}
.wb-footer__meta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 16px;
  padding: 8px 12px;
  border: 1px solid var(--wb-line);
  font-family: var(--wb-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--wb-gold);
}
.wb-footer__key {
  font-family: var(--wb-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--wb-gold);
}
.wb-footer__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--wb-bone);
}
.wb-footer__title::before {
  content: "";
  width: 12px;
  height: 2px;
  background: var(--wb-red);
}
.wb-footer__list li + li { margin-top: 10px; }
.wb-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--wb-mist);
  transition: color 0.2s var(--wb-ease), transform 0.2s var(--wb-ease);
}
.wb-footer__link::before {
  content: "";
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  border: 1px solid var(--wb-line);
  transition: background 0.2s var(--wb-ease), border-color 0.2s var(--wb-ease);
}
.wb-footer__link:hover,
.wb-footer__link:focus-visible { color: var(--wb-bone); transform: translateX(3px); }
.wb-footer__link:hover::before,
.wb-footer__link:focus-visible::before { background: var(--wb-cyan); border-color: var(--wb-cyan); }

.wb-footer__contact {
  border-top: 1px solid var(--wb-line);
  padding-block: 18px;
}
.wb-footer__contact-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 36px;
}
.wb-footer__contact-item {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  font-size: 13.5px;
}
.wb-footer__value { color: var(--wb-bone); font-family: var(--wb-mono); font-size: 13px; letter-spacing: 0.02em; }

.wb-footer__base {
  background: var(--wb-ink);
  border-top: 1px solid var(--wb-line);
}
.wb-footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 16px;
}
.wb-footer__legal {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(154, 160, 166, 0.85);
}

/* ---------- 8. 通用组件 ---------- */
.wb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--wb-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--wb-gold);
}
.wb-eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--wb-gold); }

.wb-title {
  font-size: clamp(28px, 5.2vw, 60px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--wb-bone);
}
.wb-title--sm { font-size: clamp(22px, 3vw, 34px); }
.wb-subtitle {
  max-width: 62ch;
  margin-top: 16px;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--wb-mist);
}

.wb-prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(245, 243, 238, 0.86);
}
.wb-prose p + p { margin-top: 1.05em; }
.wb-prose h2,
.wb-prose h3 {
  margin-top: 1.6em;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--wb-bone);
}
.wb-prose h2::before,
.wb-prose h3::before {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin-bottom: 12px;
  background: var(--wb-red);
}
.wb-prose ul { margin-top: 1em; }
.wb-prose li { position: relative; padding-left: 20px; }
.wb-prose li + li { margin-top: 0.5em; }
.wb-prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 2px;
  background: var(--wb-gold);
}
.wb-prose strong { color: var(--wb-bone); }

.wb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  background: transparent;
  color: var(--wb-bone);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background 0.22s var(--wb-ease), border-color 0.22s var(--wb-ease), color 0.22s var(--wb-ease), transform 0.22s var(--wb-ease);
}
.wb-btn:hover,
.wb-btn:focus-visible { border-color: var(--wb-cyan); color: var(--wb-cyan); transform: translateY(-2px); }
.wb-btn--primary { background: var(--wb-red); border-color: var(--wb-red); color: #FFFFFF; }
.wb-btn--primary:hover,
.wb-btn--primary:focus-visible {
  background: linear-gradient(100deg, var(--wb-red) 0%, var(--wb-red-deep) 60%, var(--wb-violet) 100%);
  border-color: var(--wb-red-deep);
  color: #FFFFFF;
}
.wb-btn--gold { background: var(--wb-gold); border-color: var(--wb-gold); color: var(--wb-ink); }
.wb-btn--gold:hover,
.wb-btn--gold:focus-visible { background: #FFD46B; border-color: #FFD46B; color: var(--wb-ink); }
.wb-btn--ghost { border-color: var(--wb-line); color: var(--wb-mist); }

.wb-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px;
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  font-family: var(--wb-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--wb-mist);
}
.wb-badge--live { color: var(--wb-cyan); border-color: rgba(0, 229, 208, 0.42); }
.wb-badge--gold { color: var(--wb-gold); border-color: rgba(242, 193, 78, 0.42); }
.wb-badge--red { color: #FF7068; border-color: rgba(228, 50, 43, 0.52); }

.wb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--wb-mist);
}
.wb-breadcrumb a { color: var(--wb-mist); transition: color 0.2s var(--wb-ease); }
.wb-breadcrumb a:hover { color: var(--wb-cyan); }
.wb-breadcrumb__sep { font-family: var(--wb-mono); color: var(--wb-line); }
.wb-breadcrumb [aria-current="page"] { color: var(--wb-bone); font-weight: 600; }

.wb-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--wb-panel);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
  transition: transform 0.25s var(--wb-ease), border-color 0.25s var(--wb-ease), background 0.25s var(--wb-ease);
}
.wb-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 34px;
  height: 2px;
  background: linear-gradient(90deg, var(--wb-red), var(--wb-gold));
  opacity: 0;
  transition: opacity 0.25s var(--wb-ease);
}
.wb-card:hover { transform: translateY(-6px); border-color: rgba(0, 229, 208, 0.4); background: #171A1F; }
.wb-card:hover::before { opacity: 1; }
.wb-card__num {
  font-family: var(--wb-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--wb-gold);
}
.wb-card__title {
  margin-top: 12px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--wb-bone);
}
.wb-card__text {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--wb-mist);
}

/* ---------- 9. 图片容器基础规则 ---------- */
.wb-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--wb-panel);
  border: 1px solid var(--wb-line);
  border-radius: var(--wb-radius);
}
.wb-media > img,
.wb-media > svg,
.wb-media > video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.wb-media--21x9 { aspect-ratio: 21 / 9; }
.wb-media--16x9 { aspect-ratio: 16 / 9; }
.wb-media--4x3 { aspect-ratio: 4 / 3; }
.wb-media--1x1 { aspect-ratio: 1 / 1; }
.wb-media--3x4 { aspect-ratio: 3 / 4; }
.wb-media--free { aspect-ratio: auto; min-height: 180px; }
.wb-media--clip { clip-path: polygon(0 0, 100% 0, 100% 82%, 82% 100%, 0 100%); }
.wb-media--placeholder {
  background-image:
    linear-gradient(135deg, rgba(228, 50, 43, 0.16) 0%, rgba(123, 79, 224, 0.14) 48%, rgba(0, 229, 208, 0.10) 100%),
    repeating-linear-gradient(115deg, rgba(35, 38, 45, 0.9) 0 2px, transparent 2px 14px);
}
.wb-media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.65;
  background-image:
    linear-gradient(90deg, rgba(35, 38, 45, 0.6) 1px, transparent 1px),
    linear-gradient(0deg, rgba(35, 38, 45, 0.6) 1px, transparent 1px);
  background-size: 32px 32px;
}
.wb-media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 12px;
  background: rgba(10, 11, 13, 0.84);
  font-family: var(--wb-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--wb-bone);
}

/* ---------- 10. 滚动显现 ---------- */
@keyframes wb-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
[data-reveal].is-revealed { animation: wb-rise 0.6s var(--wb-ease) both; }

/* ---------- 11. 响应式 ---------- */
@media (max-width: 1080px) {
  .wb-footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wb-footer__lead { grid-column: 1 / -1; }
  .wb-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .wb-nav-toggle { display: inline-flex; }
  .wb-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 60;
    display: block;
    padding: 6px var(--wb-gutter) 18px;
    background: var(--wb-ink);
    border-top: 1px solid var(--wb-line);
    border-bottom: 1px solid var(--wb-line);
    box-shadow: 0 26px 52px -26px rgba(0, 0, 0, 0.95);
    max-height: min(74vh, 580px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.24s var(--wb-ease), transform 0.24s var(--wb-ease), visibility 0.24s linear;
  }
  .wb-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .wb-nav__list { display: block; }
  .wb-nav__item + .wb-nav__item { border-top: 1px solid var(--wb-line); }
  .wb-nav__link {
    flex-direction: row;
    align-items: baseline;
    justify-content: flex-start;
    gap: 12px;
    padding: 14px 2px;
  }
  .wb-nav__link::after { display: none; }
  .wb-nav__link[aria-current="page"] .wb-nav__cn { color: var(--wb-red); }
  .wb-nav__cn { font-size: 15.5px; }
  .wb-nav__en { font-size: 10px; }
  .wb-nav-band { gap: 12px; min-height: 58px; }
  .wb-cta { padding: 10px 15px; font-size: 13px; }
  .wb-asym { grid-template-columns: minmax(0, 1fr); }
  .wb-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .wb-brand-meta { display: none; }
  .wb-brand__desc { letter-spacing: 0.1em; }
  .wb-footer__contact-inner { gap: 8px 24px; }
}

@media (max-width: 620px) {
  .wb-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .wb-grid--2,
  .wb-grid--3,
  .wb-grid--4 { grid-template-columns: minmax(0, 1fr); }
  .wb-nav__en { display: none; }
  .wb-prose { font-size: 16px; }
  .wb-footer__base-inner { justify-content: flex-start; }
}

@media (max-width: 420px) {
  .wb-cta { padding: 10px 12px; font-size: 12.5px; letter-spacing: 0.02em; }
  .wb-cta::after { display: none; }
  .wb-nav-toggle { padding: 10px 12px; }
}

/* ---------- 12. 动效偏好 ---------- */
@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].is-revealed { animation: none; }
  .wb-cta:hover,
  .wb-cta:focus-visible,
  .wb-btn:hover,
  .wb-btn:focus-visible,
  .wb-card:hover,
  .wb-footer__link:hover { transform: none; }
  .wb-brand-meta__item--live::before { animation: none; }
}