/* ============================================================
   WM完美体育在线 — /assets/site.css
   共享外壳样式：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }

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

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

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

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

button { background: none; border: 0; padding: 0; }

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

/* ---------- 2. 变量 ---------- */
:root {
  --wm-void: #050A18;
  --wm-panel: #0B1226;
  --wm-raised: #111A33;
  --wm-line: #1B2748;
  --wm-cyan: #00E5FF;
  --wm-cyan-dim: #00A8C0;
  --wm-orange: #FF6A1A;
  --wm-gold: #FFC23C;
  --wm-up: #3DDC97;
  --wm-down: #FF4D6D;
  --wm-ink: #EAF2FF;
  --wm-muted: #9DB0CC;

  --wm-font-head: "Archivo Narrow", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --wm-font-body: "Noto Sans SC", "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  --wm-font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wm-shell: 1440px;
  --wm-head-h: 74px;
  --wm-gutter: clamp(16px, 3vw, 40px);
  --wm-r: 2px;
  --wm-ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 基础与中文排版 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  background-color: var(--wm-void);
  color: var(--wm-ink);
  font-family: var(--wm-font-body);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 夜间赛场网格底纹 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
  -webkit-mask-image: radial-gradient(120% 70% at 50% 0%, #000 0%, rgba(0, 0, 0, 0.25) 62%, transparent 100%);
  mask-image: radial-gradient(120% 70% at 50% 0%, #000 0%, rgba(0, 0, 0, 0.25) 62%, transparent 100%);
}

h1, h2, h3, h4 {
  font-family: var(--wm-font-head);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

p { margin-bottom: 1.2em; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 700; }

::selection { background: var(--wm-cyan); color: #03131b; }

#main-content { scroll-margin-top: calc(var(--wm-head-h) + 64px); }

/* ---------- 4. 焦点与可达性 ---------- */
:focus-visible {
  outline: 2px solid var(--wm-cyan);
  outline-offset: 2px;
  border-radius: var(--wm-r);
}

.wm-skip {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 13px 20px;
  background: var(--wm-cyan);
  color: #021118;
  font-family: var(--wm-font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: var(--wm-r);
  transition: top 0.18s var(--wm-ease);
}

.wm-skip:focus {
  top: 16px;
  outline-color: var(--wm-ink);
}

/* ---------- 5. 通用排版工具 ---------- */
.wm-anno {
  display: inline-block;
  font-family: var(--wm-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--wm-muted);
  text-transform: uppercase;
}

.wm-mono {
  font-family: var(--wm-font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.wm-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--wm-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--wm-cyan);
}

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

/* ---------- 6. 布局容器与栅格 ---------- */
.wm-main {
  position: relative;
  z-index: 1;
}

.wm-shell {
  width: 100%;
  max-width: var(--wm-shell);
  margin: 0 auto;
  padding: 0 var(--wm-gutter);
}

.wm-section {
  position: relative;
  padding: clamp(48px, 7vw, 96px) 0;
  border-top: 1px solid var(--wm-line);
}

.wm-grid {
  display: grid;
  gap: clamp(14px, 2vw, 26px);
}

.wm-grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* ---------- 7. 按钮 ---------- */
.wm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: transparent;
  color: var(--wm-ink);
  font-family: var(--wm-font-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.18s var(--wm-ease), border-color 0.18s var(--wm-ease),
    color 0.18s var(--wm-ease), transform 0.18s var(--wm-ease);
}

.wm-btn:hover { border-color: var(--wm-cyan); color: var(--wm-cyan); }
.wm-btn:active { transform: translateY(1px); }

.wm-btn--solid {
  background: var(--wm-orange);
  border-color: var(--wm-orange);
  color: #170700;
}

.wm-btn--solid:hover { background: #ff8340; border-color: #ff8340; color: #170700; }

.wm-btn--ghost {
  border-color: var(--wm-cyan);
  color: var(--wm-cyan);
}

.wm-btn--ghost:hover { background: rgba(0, 229, 255, 0.12); color: var(--wm-cyan); }

.wm-btn--sm { padding: 9px 15px; font-size: 12.5px; }

/* ---------- 8. 面板 / 卡片基础 ---------- */
.wm-panel {
  position: relative;
  background: var(--wm-panel);
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  transition: border-color 0.18s var(--wm-ease), transform 0.18s var(--wm-ease),
    box-shadow 0.18s var(--wm-ease);
}

.wm-panel:hover {
  border-color: var(--wm-cyan);
  transform: translateY(-2px);
  box-shadow: 0 20px 44px -28px rgba(0, 229, 255, 0.7);
}

.wm-panel__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 18px;
  background: var(--wm-raised);
  border-bottom: 1px solid var(--wm-line);
  font-family: var(--wm-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--wm-muted);
}

.wm-panel__body { padding: clamp(16px, 2vw, 24px); }

/* ---------- 9. 数字锚点与状态语义 ---------- */
.wm-stat { display: flex; flex-direction: column; gap: 4px; }

.wm-stat__value {
  font-family: var(--wm-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 5vw, 72px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--wm-gold);
}

.wm-stat__label {
  font-family: var(--wm-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--wm-muted);
}

.wm-delta--up { color: var(--wm-up); }
.wm-delta--down { color: var(--wm-down); }

.wm-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: var(--wm-raised);
  font-family: var(--wm-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--wm-muted);
}

/* ---------- 10. 图片容器（页面阶段放占位图） ---------- */
.wm-media {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: linear-gradient(150deg, var(--wm-raised) 0%, var(--wm-void) 100%);
}

.wm-media--wide { aspect-ratio: 21 / 9; }
.wm-media--tall { aspect-ratio: 4 / 5; }

.wm-media > img,
.wm-media > svg,
.wm-media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.wm-media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

.wm-media__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 13px;
  background: rgba(5, 10, 24, 0.86);
  border-top: 1px solid var(--wm-cyan);
  border-right: 1px solid var(--wm-line);
  font-family: var(--wm-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--wm-cyan);
}

/* ---------- 11. 面包屑 ---------- */
.wm-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-family: var(--wm-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--wm-muted);
}

.wm-crumbs__item { display: inline-flex; align-items: center; gap: 9px; }
.wm-crumbs__sep { color: var(--wm-cyan-dim); }
.wm-crumbs a:hover { color: var(--wm-cyan); }

/* ============================================================
   头部
   ============================================================ */
.wm-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 10, 24, 0.94);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--wm-line);
}

.wm-frame {
  position: relative;
  width: 100%;
  max-width: var(--wm-shell);
  margin: 0 auto;
}

.wm-topbar {
  display: flex;
  align-items: stretch;
  min-height: var(--wm-head-h);
  border-left: 1px solid var(--wm-line);
  border-right: 1px solid var(--wm-line);
}

/* 品牌舱 */
.wm-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 0 clamp(14px, 1.6vw, 22px) 0 var(--wm-gutter);
  border-right: 1px solid var(--wm-line);
}

.wm-brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--wm-cyan);
  border-radius: var(--wm-r);
  background: linear-gradient(140deg, rgba(0, 229, 255, 0.22), transparent 68%);
  color: var(--wm-cyan);
  font-family: var(--wm-font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex: 0 0 auto;
}

.wm-brand__mark::after {
  content: "";
  position: absolute;
  right: -3px;
  bottom: -3px;
  width: 10px;
  height: 10px;
  border-right: 1px solid var(--wm-gold);
  border-bottom: 1px solid var(--wm-gold);
}

.wm-brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.wm-brand__text strong {
  font-family: var(--wm-font-head);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--wm-ink);
}

.wm-brand__text em {
  font-family: var(--wm-font-mono);
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.24em;
  color: var(--wm-muted);
}

/* 导航舱 */
.wm-nav {
  display: flex;
  align-items: stretch;
  flex: 1 1 auto;
  justify-content: center;
  min-width: 0;
}

.wm-nav__list {
  display: flex;
  align-items: stretch;
  height: 100%;
}

.wm-nav__list > li { display: flex; }

.wm-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 clamp(11px, 1.4vw, 20px);
  border-right: 1px solid var(--wm-line);
  color: var(--wm-muted);
  font-family: var(--wm-font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: color 0.18s var(--wm-ease), background 0.18s var(--wm-ease);
}

.wm-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--wm-cyan);
  transform: scaleX(0);
  transform-origin: 50% 50%;
  transition: transform 0.22s var(--wm-ease);
}

.wm-nav__link:hover {
  color: var(--wm-ink);
  background: var(--wm-raised);
}

.wm-nav__link:hover::after { transform: scaleX(1); }

.wm-nav__link[aria-current="page"] {
  color: var(--wm-cyan);
  background: rgba(0, 229, 255, 0.07);
}

.wm-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 工具舱 */
.wm-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
  padding-left: clamp(12px, 1.6vw, 20px);
  padding-right: var(--wm-gutter);
  border-left: 1px solid var(--wm-line);
}

.wm-search {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: var(--wm-panel);
  color: var(--wm-muted);
  font-family: var(--wm-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  white-space: nowrap;
  transition: border-color 0.18s var(--wm-ease), color 0.18s var(--wm-ease),
    background 0.18s var(--wm-ease);
}

.wm-search:hover,
.wm-search:focus-visible {
  border-color: var(--wm-cyan);
  color: var(--wm-cyan);
  background: rgba(0, 229, 255, 0.08);
}

.wm-search__icon {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.wm-search__icon::after {
  content: "";
  position: absolute;
  right: -4px;
  bottom: -3px;
  width: 6px;
  height: 1.5px;
  background: currentColor;
  transform: rotate(45deg);
}

.wm-search__key {
  padding: 2px 5px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--wm-muted);
}

.wm-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: var(--wm-panel);
  color: var(--wm-ink);
  font-family: var(--wm-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color 0.18s var(--wm-ease), color 0.18s var(--wm-ease);
}

.wm-navtoggle:hover { border-color: var(--wm-cyan); color: var(--wm-cyan); }

.wm-navtoggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.wm-navtoggle__bars i {
  display: block;
  height: 2px;
  background: var(--wm-cyan);
  transition: transform 0.2s var(--wm-ease), opacity 0.2s var(--wm-ease);
}

.wm-navtoggle[aria-expanded="true"] .wm-navtoggle__bars i:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.wm-navtoggle[aria-expanded="true"] .wm-navtoggle__bars i:nth-child(2) { opacity: 0; }

.wm-navtoggle[aria-expanded="true"] .wm-navtoggle__bars i:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* 状态带 */
.wm-statusbar {
  border-left: 1px solid var(--wm-line);
  border-right: 1px solid var(--wm-line);
  border-top: 1px solid var(--wm-line);
  background: var(--wm-panel);
}

.wm-statusbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px clamp(12px, 2vw, 26px);
  min-height: 38px;
  padding: 6px var(--wm-gutter);
}

.wm-statusbar__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--wm-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--wm-muted);
}

.wm-statusbar__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--wm-up);
  box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.16);
}

@media (prefers-reduced-motion: no-preference) {
  .wm-statusbar__dot { animation: wm-pulse 2.4s var(--wm-ease) infinite; }
}

@keyframes wm-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.16); }
  50% { box-shadow: 0 0 0 6px rgba(61, 220, 151, 0.04); }
}

.wm-statusbar__cta {
  margin-left: auto;
  font-family: var(--wm-font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--wm-gold);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--wm-ease), border-color 0.18s var(--wm-ease);
}

.wm-statusbar__cta:hover {
  color: var(--wm-orange);
  border-bottom-color: var(--wm-orange);
}

/* 滚动进度轨 */
.wm-scrollrail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}

.wm-scrollrail__fill {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--wm-cyan), var(--wm-gold));
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

/* ============================================================
   页脚
   ============================================================ */
.wm-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  background: var(--wm-panel);
  border-top: 2px solid var(--wm-cyan);
}

.wm-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  max-width: var(--wm-shell);
  margin: 0 auto;
}

.wm-footer__col {
  padding: clamp(24px, 3vw, 42px) clamp(20px, 2.4vw, 36px);
  border-right: 1px solid var(--wm-line);
  border-bottom: 1px solid var(--wm-line);
}

.wm-footer__col:last-child { border-right: 0; }

.wm-footer__brand {
  font-family: var(--wm-font-head);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--wm-ink);
  margin-bottom: 12px;
}

.wm-footer__note {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--wm-muted);
  margin-bottom: 16px;
}

.wm-footer__badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 11px;
  border: 1px solid var(--wm-line);
  border-left: 2px solid var(--wm-cyan);
  border-radius: var(--wm-r);
  background: var(--wm-raised);
  font-family: var(--wm-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--wm-cyan);
}

.wm-footer__title {
  font-family: var(--wm-font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--wm-muted);
  margin-bottom: 16px;
}

.wm-footer__list {
  display: grid;
  gap: 10px;
  font-size: 14.5px;
}

.wm-footer__list a {
  display: inline-block;
  color: var(--wm-ink);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--wm-ease), border-color 0.18s var(--wm-ease);
}

.wm-footer__list a:hover {
  color: var(--wm-cyan);
  border-bottom-color: var(--wm-cyan);
}

.wm-footer__contact {
  display: grid;
  gap: 9px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--wm-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--wm-muted);
  overflow-wrap: anywhere;
}

.wm-footer__base {
  background: var(--wm-void);
  border-top: 1px solid var(--wm-line);
}

.wm-footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 26px;
  max-width: var(--wm-shell);
  margin: 0 auto;
  padding: 16px var(--wm-gutter);
  font-family: var(--wm-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--wm-muted);
}

.wm-backtop {
  position: fixed;
  right: clamp(14px, 2.4vw, 28px);
  bottom: clamp(14px, 2.4vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  border: 1px solid var(--wm-line);
  border-radius: var(--wm-r);
  background: var(--wm-raised);
  color: var(--wm-muted);
  font-family: var(--wm-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.2s var(--wm-ease), transform 0.2s var(--wm-ease),
    border-color 0.18s var(--wm-ease), color 0.18s var(--wm-ease);
}

.wm-backtop[data-visible] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.wm-backtop:hover { border-color: var(--wm-cyan); color: var(--wm-cyan); }

/* ============================================================
   滚动显现（页面阶段给块加 data-reveal）
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .wm-js [data-reveal] {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s var(--wm-ease), transform 0.5s var(--wm-ease);
  }

  .wm-js [data-reveal][data-revealed] {
    opacity: 1;
    transform: none;
  }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1240px) {
  .wm-brand__text em { display: none; }
}

@media (max-width: 1024px) {
  .wm-footer__grid { grid-template-columns: 1fr 1fr; }
  .wm-footer__col:nth-child(2n) { border-right: 0; }
  .wm-footer__col:nth-last-child(-n + 2) { border-bottom: 0; }

  .wm-grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  :root { --wm-head-h: 62px; }

  .wm-topbar {
    border-left: 0;
    border-right: 0;
    min-height: var(--wm-head-h);
  }

  .wm-brand {
    padding-left: var(--wm-gutter);
    padding-right: 6px;
    border-right: 0;
  }

  .wm-brand__mark { width: 34px; height: 34px; font-size: 13px; }
  .wm-brand__text strong { font-size: 15px; }

  .wm-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 80;
    background: var(--wm-panel);
    border-top: 1px solid var(--wm-line);
    border-bottom: 2px solid var(--wm-cyan);
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.85);
  }

  .wm-nav[data-open] { display: block; }

  .wm-nav__list {
    flex-direction: column;
    height: auto;
  }

  .wm-nav__list > li { display: block; }

  .wm-nav__link {
    display: block;
    padding: 15px var(--wm-gutter);
    border-right: 0;
    border-bottom: 1px solid var(--wm-line);
    font-size: 16px;
  }

  .wm-nav__link::after {
    left: 0;
    right: auto;
    width: 3px;
    height: auto;
    top: 0;
    bottom: 0;
    transform: scaleY(0);
    transform-origin: 50% 0;
  }

  .wm-nav__link:hover::after,
  .wm-nav__link[aria-current="page"]::after { transform: scaleY(1); }

  .wm-tools {
    margin-left: auto;
    padding-left: 0;
    padding-right: var(--wm-gutter);
    border-left: 0;
    gap: 8px;
  }

  .wm-search__label { display: none; }
  .wm-search { padding: 9px 11px; gap: 7px; }
  .wm-search__key { display: none; }

  .wm-btn--sm { display: none; }

  .wm-navtoggle { display: inline-flex; }

  .wm-statusbar { border-left: 0; border-right: 0; }

  .wm-statusbar__cta { margin-left: 0; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .wm-grid--12 { grid-template-columns: minmax(0, 1fr); }

  .wm-footer__grid { grid-template-columns: 1fr; }
  .wm-footer__col { border-right: 0; }
  .wm-footer__col:last-child { border-bottom: 1px solid var(--wm-line); }

  .wm-statusbar__item:nth-child(3) { display: none; }

  .wm-brand__text strong { font-size: 14px; letter-spacing: 0.02em; }

  .wm-navtoggle__text { display: none; }

  .wm-backtop { padding: 10px 13px; font-size: 11px; }
}

/* ============================================================
   降低动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .wm-panel:hover { transform: none; }
  .wm-backtop { transform: none; }
}