/* ==========================================================================
   悟空体育中文站 · 共享样式表 /assets/site.css
   墨黑基底 · 鎏金索引 · 朱砂斜切 · 青玉状态 · 直角细线
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #0B0D0F;
  --ink-2: #15191D;
  --ink-3: #1E2429;
  --gold: #D9A62E;
  --gold-bright: #F3D36A;
  --cinnabar: #D24736;
  --jade: #2F8F78;
  --mist: #ECE6DA;
  --slate: #87939C;
  --paper: #F5EEDF;
  --titan: #FFFFFF;

  --line: rgba(236, 230, 218, 0.14);
  --line-soft: rgba(236, 230, 218, 0.07);
  --line-strong: rgba(236, 230, 218, 0.32);

  --shell: 1360px;
  --gutter: clamp(16px, 4vw, 56px);

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --fs-hero: clamp(46px, 10vw, 148px);
  --fs-h1: clamp(34px, 5.4vw, 68px);
  --fs-h2: clamp(26px, 3.4vw, 44px);
  --fs-h3: clamp(20px, 2.2vw, 26px);
  --fs-lede: clamp(16px, 1.4vw, 19px);
  --fs-body: 16px;
  --fs-sm: 14px;
  --fs-xs: 12.5px;
  --fs-anno: 11px;

  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 48px;
  --sp-6: 72px;
  --sp-7: 104px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  margin: 0;
  padding: 0;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  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, canvas { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; }
table { border-collapse: collapse; border-spacing: 0; width: 100%; }
hr { border: 0; }

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
a:hover { color: var(--gold-bright); }

:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

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

/* ---------- 3. 中文排版基线 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--mist);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.28; }

p { line-height: 1.8; }

strong, b { font-weight: 800; color: var(--titan); }

/* ---------- 4. 跳转链接 ---------- */
.wk-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  display: inline-block;
  padding: 12px 22px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 800;
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
}

.wk-skip:focus,
.wk-skip:focus-visible {
  left: 16px;
  top: 16px;
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* ---------- 5. 页头 ---------- */
.wk-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(11, 13, 15, 0.94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.3s var(--ease), background 0.3s var(--ease);
}

.wk-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background:
    linear-gradient(90deg,
      var(--gold) 0 16%,
      transparent 16% 62%,
      var(--cinnabar) 62% 71%,
      transparent 71% 100%);
  pointer-events: none;
}

.wk-header[data-scrolled] {
  background: rgba(11, 13, 15, 0.99);
  box-shadow: 0 14px 40px -22px rgba(0, 0, 0, 0.95);
}

.wk-header__inner {
  width: min(var(--shell), 100% - var(--gutter) * 2);
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0 clamp(12px, 2vw, 32px);
  padding-block: 12px;
}

/* 印章圆标 */
.wk-seal {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1;
  border-radius: 50% 8% 50% 8%;
  transform: rotate(-6deg);
  transition: transform 0.35s var(--ease), background 0.25s var(--ease);
}

/* 品牌块 */
.wk-brand {
  grid-column: 1;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--mist);
  text-decoration: none;
}

.wk-brand:hover { color: var(--mist); }
.wk-brand:hover .wk-seal {
  background: var(--gold-bright);
  transform: rotate(0deg) scale(1.04);
}

.wk-brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.15;
}

.wk-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.wk-brand__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--slate);
  text-transform: uppercase;
}

/* 移动导航按钮 */
.wk-nav-toggle {
  display: none;
  grid-column: 2;
  justify-self: end;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line-strong);
  color: var(--mist);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.wk-nav-toggle:hover {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.wk-nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 16px;
}

.wk-nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.wk-header[data-open] .wk-nav-toggle__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.wk-header[data-open] .wk-nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}
.wk-header[data-open] .wk-nav-toggle__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 主导航 */
.wk-nav {
  grid-column: 2;
  justify-self: center;
  min-width: 0;
}

.wk-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.wk-nav__item { position: relative; }

.wk-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 12px;
  color: var(--mist);
  font-size: var(--fs-sm);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.wk-nav__link:hover {
  color: var(--gold-bright);
  background: rgba(217, 166, 46, 0.07);
}

.wk-nav__idx {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--slate);
  transition: color 0.2s var(--ease);
}

.wk-nav__link:hover .wk-nav__idx { color: var(--gold); }

.wk-nav__link[aria-current="page"] { color: var(--gold); }

.wk-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--gold);
}

.wk-nav__link[aria-current="page"] .wk-nav__idx { color: var(--gold); }

/* 命令区 */
.wk-actions {
  grid-column: 3;
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
}

.wk-actions__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--slate);
  white-space: nowrap;
}

.wk-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 0 3px rgba(47, 143, 120, 0.22);
}

.wk-actions__link {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border: 1px solid var(--line-strong);
  color: var(--mist);
  font-size: var(--fs-xs);
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.wk-actions__link:hover {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.wk-actions__link--accent {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
  font-weight: 800;
}

.wk-actions__link--accent:hover {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  color: var(--ink);
}

/* ---------- 6. 页脚 ---------- */
.wk-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 128px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.wk-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg,
    var(--gold) 0 14%,
    var(--cinnabar) 14% 21%,
    var(--jade) 21% 28%,
    transparent 28% 100%);
  pointer-events: none;
}

.wk-footer::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -42%;
  width: min(560px, 72vw);
  height: min(560px, 72vw);
  background: radial-gradient(circle,
    rgba(217, 166, 46, 0.10) 0%,
    rgba(47, 143, 120, 0.07) 44%,
    transparent 68%);
  transform: rotate(-12deg);
  pointer-events: none;
}

.wk-footer__inner {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100% - var(--gutter) * 2);
  margin-inline: auto;
  padding-block: clamp(44px, 5.5vw, 76px) clamp(32px, 4vw, 52px);
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 0.9fr 1.2fr;
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}

.wk-footer__lead { min-width: 0; }

.wk-footer__brandline {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.wk-footer__brandline:hover .wk-seal {
  background: var(--gold-bright);
  transform: rotate(0deg) scale(1.04);
}

.wk-footer__word { min-width: 0; }

.wk-footer__brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: var(--mist);
}

.wk-footer__tag {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.wk-footer__summary {
  max-width: 34ch;
  font-size: var(--fs-sm);
  line-height: 1.9;
  color: rgba(236, 230, 218, 0.66);
}

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

.wk-footer__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--slate);
}

.wk-footer__title::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--gold);
}

.wk-footer__list {
  display: grid;
  gap: 2px;
}

.wk-footer__link {
  display: inline-block;
  padding: 6px 0;
  color: rgba(236, 230, 218, 0.78);
  font-size: var(--fs-sm);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.wk-footer__link:hover {
  color: var(--gold-bright);
  transform: translateX(3px);
}

.wk-footer__col--contact {
  display: grid;
  gap: 12px;
  align-content: start;
}

.wk-footer__contactline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: rgba(236, 230, 218, 0.78);
}

.wk-footer__key {
  flex: 0 0 auto;
  min-width: 34px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

/* 可复制字段 */
.wk-copy {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  padding: 5px 10px;
  border: 1px dashed rgba(236, 230, 218, 0.22);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background 0.2s var(--ease);
}

.wk-copy:hover {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.wk-copy__text {
  min-width: 0;
  word-break: break-all;
}

.wk-copy__hint {
  flex: 0 0 auto;
  font-family: var(--font-body);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--slate);
  transition: color 0.2s var(--ease);
}

.wk-copy.is-copied {
  border-color: var(--jade);
  border-style: solid;
  color: var(--jade);
}

.wk-copy.is-copied .wk-copy__hint { color: var(--jade); }

.wk-footer__base {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100% - var(--gutter) * 2);
  margin-inline: auto;
  padding-block: 18px 32px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.12em;
  color: var(--slate);
}

.wk-footer__filing { color: var(--slate); }

.wk-footer__copy { color: rgba(236, 230, 218, 0.5); }

/* ---------- 7. 布局容器 ---------- */
.wk-shell {
  width: min(var(--shell), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

.wk-section {
  padding-block: clamp(44px, 6vw, 92px);
}

.wk-stack > * + * {
  margin-top: var(--stack, var(--sp-2));
}

/* ---------- 8. 通用文字件 ---------- */
.wk-display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-hero);
  line-height: 0.92;
  letter-spacing: -0.028em;
  color: var(--mist);
}

.wk-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.wk-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.wk-lede {
  max-width: 62ch;
  font-size: var(--fs-lede);
  line-height: 1.85;
  color: rgba(236, 230, 218, 0.82);
}

.wk-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.wk-note {
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.16em;
  line-height: 1.8;
  color: var(--slate);
}

.wk-muted { color: var(--slate); }

.wk-vert {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.3em;
  color: var(--slate);
}

.wk-rule {
  height: 1px;
  background: var(--line);
}

.wk-rule--gold {
  height: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(217, 166, 46, 0.15) 45%, transparent 100%);
}

/* ---------- 9. 标签 ---------- */
.wk-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  color: var(--slate);
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.wk-tag--gold { color: var(--gold); border-color: rgba(217, 166, 46, 0.45); }
.wk-tag--jade { color: var(--jade); border-color: rgba(47, 143, 120, 0.5); }
.wk-tag--cinnabar { color: var(--cinnabar); border-color: rgba(210, 71, 54, 0.5); }

/* ---------- 10. 按钮 ---------- */
.wk-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.22s var(--ease), color 0.22s var(--ease),
              border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.wk-btn:hover { transform: translateX(3px); }

.wk-btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.wk-btn--gold:hover {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  color: var(--ink);
}

.wk-btn--jade {
  background: var(--jade);
  border-color: var(--jade);
  color: var(--titan);
}

.wk-btn--jade:hover {
  background: #39a98e;
  border-color: #39a98e;
  color: var(--titan);
}

.wk-btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.wk-btn--sm {
  padding: 9px 18px;
  font-size: var(--fs-xs);
}

/* ---------- 11. 面包屑 ---------- */
.wk-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 22px 0;
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.14em;
  color: var(--slate);
}

.wk-breadcrumb a {
  color: var(--slate);
  text-decoration: none;
}

.wk-breadcrumb a:hover { color: var(--gold); }

.wk-breadcrumb__sep {
  color: rgba(236, 230, 218, 0.28);
}

.wk-breadcrumb [aria-current="page"] {
  color: var(--mist);
}

/* ---------- 12. 栅格 ---------- */
.wk-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

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

/* ---------- 13. 卡片与展签 ---------- */
.wk-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 34px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.wk-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--gold);
}

.wk-card:hover {
  border-color: rgba(217, 166, 46, 0.42);
  background: #191E23;
}

.wk-plate {
  padding: clamp(20px, 2.6vw, 36px);
  background: var(--paper);
  color: var(--ink);
  border-left: 4px solid var(--cinnabar);
}

.wk-plate h2,
.wk-plate h3,
.wk-plate h4 { color: var(--ink); }

.wk-plate p { color: #2A2F33; }

.wk-plate a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.wk-plate a:hover { color: var(--cinnabar); }

/* ---------- 14. 响应式图片容器基础 ---------- */
.wk-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(217, 166, 46, 0.14), rgba(47, 143, 120, 0.10)),
    repeating-linear-gradient(135deg,
      rgba(236, 230, 218, 0.055) 0 1px,
      transparent 1px 15px),
    var(--ink-3);
}

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

.wk-media--wide { aspect-ratio: 21 / 9; }
.wk-media--tall { aspect-ratio: 3 / 4; }
.wk-media--square { aspect-ratio: 1 / 1; }

.wk-media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 14px;
  background: rgba(11, 13, 15, 0.88);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: var(--fs-anno);
  letter-spacing: 0.14em;
}

/* ---------- 15. 无障碍工具类 ---------- */
.wk-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 16. 滚动显现 ---------- */
.wk-js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

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

/* ---------- 17. 中屏收紧 ---------- */
@media (max-width: 1180px) {
  .wk-actions__status { display: none; }
  .wk-nav__link { padding: 10px 9px; font-size: 13.5px; }
  .wk-nav__link[aria-current="page"]::after { left: 9px; right: 9px; }
}

/* ---------- 18. 移动端页头 ---------- */
@media (max-width: 960px) {
  html { scroll-padding-top: 90px; }

  .wk-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    row-gap: 0;
    padding-block: 10px;
  }

  .wk-brand { grid-column: 1; }
  .wk-nav-toggle { display: inline-flex; grid-column: 2; }

  .wk-nav,
  .wk-actions {
    grid-column: 1 / -1;
    display: none;
  }

  .wk-header[data-open] .wk-nav {
    display: block;
    margin-top: 12px;
    padding-top: 6px;
    border-top: 1px solid var(--line);
  }

  .wk-header[data-open] .wk-actions {
    display: flex;
    flex-wrap: wrap;
    justify-self: stretch;
    padding: 12px 0 14px;
    border-top: 1px solid var(--line-soft);
  }

  .wk-nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
  }

  .wk-nav__item { border-bottom: 1px solid var(--line-soft); }

  .wk-nav__link {
    padding: 13px 2px;
    font-size: 15px;
    justify-content: flex-start;
    background: transparent;
  }

  .wk-nav__link[aria-current="page"]::after {
    left: 2px;
    right: auto;
    bottom: 0;
    width: 24px;
  }

  .wk-actions__link { flex: 1 1 auto; justify-content: center; }

  .wk-footer__inner { grid-template-columns: 1fr 1fr; }
  .wk-footer__lead { grid-column: 1 / -1; }

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

/* ---------- 19. 小屏 ---------- */
@media (max-width: 620px) {
  .wk-brand__meta { display: none; }

  .wk-footer__inner { grid-template-columns: 1fr; gap: 30px; }
  .wk-footer__summary { max-width: none; }

  .wk-footer__base {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-block: 16px 28px;
  }

  .wk-grid--2,
  .wk-grid--3,
  .wk-grid--4 { grid-template-columns: 1fr; }

  .wk-actions__link { flex: 1 1 100%; }
}

/* ---------- 20. 降低动效 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .wk-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .wk-btn:hover,
  .wk-footer__link:hover { transform: none; }
}