/* ============================================================
   万合足球 · 共享样式表 /assets/site.css
   高原赛场风：极简文字建筑 + 切角档案系统
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, pre { 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; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; border-spacing: 0; }
input, select, textarea { font: inherit; }

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩 */
  --green-deep: #0F3A2C;
  --green-mid: #1E5C45;
  --blue-deep: #0C2E4A;
  --blue-bright: #2C86B0;
  --sand: #D9A548;
  --mist: #F1F5F0;
  --paper: #DCE3DB;
  --ink: #0A1411;
  --gray: #66766E;
  --clay: #B5533C;

  --mist-82: rgba(241, 245, 240, 0.82);
  --mist-62: rgba(241, 245, 240, 0.62);
  --mist-45: rgba(241, 245, 240, 0.45);
  --mist-14: rgba(241, 245, 240, 0.14);

  /* 字体 */
  --font-display: "HarmonyOS Sans", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: var(--font-display);
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Consolas, "Liberation Mono", monospace;

  /* 尺度 */
  --header-h: 68px;
  --container: 1320px;
  --gutter: clamp(16px, 4vw, 48px);
  --cut: 20px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--mist);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: var(--sand); color: var(--green-deep); }

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

.wh-section--dark :focus-visible,
.wh-footer :focus-visible,
.wh-header :focus-visible { outline-color: var(--sand); }

/* ---------- 4. 工具类 ---------- */
.wh-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;
}

.wh-skip {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -160%);
  padding: 11px 22px;
  background: var(--sand);
  color: var(--green-deep);
  font: 600 13px/1 var(--font-body);
  letter-spacing: 0.06em;
  transition: transform 0.2s var(--ease);
}
.wh-skip:focus { transform: translate(-50%, 0); }

/* ---------- 5. 容器与区块 ---------- */
.wh-container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wh-container--narrow { max-width: 920px; }

.wh-section { padding-block: clamp(56px, 8vw, 120px); }
.wh-section--tight { padding-block: clamp(36px, 5vw, 72px); }

.wh-section--mist { background-color: var(--mist); color: var(--ink); }

.wh-section--dark {
  background-color: var(--green-deep);
  color: var(--mist);
  background-image:
    repeating-linear-gradient(115deg, rgba(241, 245, 240, 0.035) 0 1px, transparent 1px 11px);
}
.wh-section--dark .wh-lead { color: var(--mist-62); }
.wh-section--blue {
  background-color: var(--blue-deep);
  color: var(--mist);
}

/* 章节索引小标签 */
.wh-section-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 500 11px/1.6 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-bright);
}
.wh-section-index::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}
.wh-section--dark .wh-section-index { color: var(--sand); }

/* ---------- 6. 标题 ---------- */
.wh-display {
  font-size: clamp(46px, 9vw, 110px);
  line-height: 1.02;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.wh-h1 {
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.06;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.wh-h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.wh-h3 {
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.26;
  font-weight: 700;
}
.wh-h4 {
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
}
.wh-lead {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.75;
  color: var(--gray);
}
.wh-muted { color: var(--gray); }
.wh-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* 装饰性超大轮次数字 */
.wh-roundnum {
  display: block;
  font: 500 clamp(64px, 13vw, 180px) / 0.88 var(--font-mono);
  letter-spacing: 0.02em;
  color: rgba(241, 245, 240, 0.28);
  -webkit-text-stroke: 1px rgba(241, 245, 240, 0.35);
  user-select: none;
}
.wh-roundnum--ink { color: rgba(12, 46, 74, 0.14); -webkit-text-stroke: 1px rgba(12, 46, 74, 0.2); }

/* ---------- 7. 按钮 ---------- */
.wh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 11px 18px;
  font: 600 13px/1 var(--font-body);
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.wh-btn--primary {
  background: var(--sand);
  border-color: var(--sand);
  color: var(--green-deep);
}
.wh-btn--primary:hover { background: #E5B65F; border-color: #E5B65F; }
.wh-btn--quiet {
  border-color: rgba(241, 245, 240, 0.4);
  color: var(--mist);
}
.wh-btn--quiet:hover { border-color: var(--mist); background: rgba(241, 245, 240, 0.1); }
.wh-btn--ghost {
  border-color: rgba(12, 46, 74, 0.35);
  color: var(--blue-deep);
}
.wh-btn--ghost:hover { background: var(--blue-deep); border-color: var(--blue-deep); color: var(--mist); }
.wh-btn--link {
  min-height: 0;
  padding: 0;
  border: 0;
  color: var(--blue-bright);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.wh-btn--link:hover { color: var(--green-mid); }

/* ---------- 8. 头部 ---------- */
.wh-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  color: var(--mist);
  background-image: linear-gradient(
    180deg,
    rgba(10, 20, 17, 0.66) 0%,
    rgba(10, 20, 17, 0.32) 58%,
    rgba(10, 20, 17, 0) 100%
  );
  transition: background-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}
.wh-header.is-solid {
  background-color: var(--blue-deep);
  background-image: none;
  box-shadow: 0 1px 0 var(--mist-14), 0 10px 30px rgba(10, 20, 17, 0.3);
}

.wh-header__inner {
  position: relative;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  min-height: var(--header-h);
  padding: 12px var(--gutter);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
}

/* 品牌 */
.wh-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: inherit;
}
.wh-brand__mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid rgba(241, 245, 240, 0.55);
  border-radius: 50%;
  color: var(--sand);
  font: 600 15px/1 var(--font-display);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}
.wh-brand:hover .wh-brand__mark { border-color: var(--sand); transform: rotate(-10deg); }
.wh-brand__text { display: flex; flex-direction: column; gap: 3px; }
.wh-brand__name {
  font: 700 19px/1.1 var(--font-display);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.wh-brand__tagline {
  display: block;
  max-width: 34ch;
  overflow: hidden;
  white-space: nowrap;
  font: 400 10px/1.4 var(--font-mono);
  letter-spacing: 0.12em;
  color: var(--mist-62);
  transition: max-width 0.3s var(--ease), opacity 0.24s var(--ease);
}
.wh-header.is-solid .wh-brand__tagline { max-width: 0; opacity: 0; }

/* 主导航 */
.wh-nav { margin-left: auto; }
.wh-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1.4vw, 20px);
}
.wh-nav__link {
  position: relative;
  display: inline-block;
  padding: 10px 3px;
  font: 500 14px/1.2 var(--font-display);
  letter-spacing: 0.02em;
  color: var(--mist-82);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.wh-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 3px;
  height: 2px;
  background: var(--sand);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.26s var(--ease);
}
.wh-nav__link:hover { color: var(--mist); }
.wh-nav__link:hover::after { transform: scaleX(1); }
.wh-nav__link[aria-current="page"] { color: var(--sand); }
.wh-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.wh-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: 0;
}

/* 移动导航按钮 */
.wh-nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  padding: 9px 12px;
  border: 1px solid rgba(241, 245, 240, 0.4);
  color: var(--mist);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: 0.14em;
}
.wh-nav-toggle:hover { border-color: var(--mist); }
.wh-nav-toggle__box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
}
.wh-nav-toggle__box span {
  display: block;
  height: 1px;
  background: currentColor;
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}
.wh-nav-toggle[aria-expanded="true"] .wh-nav-toggle__box span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.wh-nav-toggle[aria-expanded="true"] .wh-nav-toggle__box span:nth-child(2) { opacity: 0; }
.wh-nav-toggle[aria-expanded="true"] .wh-nav-toggle__box span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 阅读进度 */
.wh-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(241, 245, 240, 0.12);
  overflow: hidden;
}
.wh-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: var(--sand);
}

/* ---------- 9. 页脚 ---------- */
.wh-footer {
  background-color: var(--green-deep);
  color: var(--mist);
  background-image:
    repeating-linear-gradient(115deg, rgba(241, 245, 240, 0.035) 0 1px, transparent 1px 10px);
}
.wh-footer__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 96px) var(--gutter) 30px;
}
.wh-footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: clamp(26px, 4vw, 56px);
  padding-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--mist-14);
}
.wh-footer__brand { display: flex; flex-direction: column; gap: 12px; }
.wh-footer__mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(217, 165, 72, 0.7);
  border-radius: 50%;
  color: var(--sand);
  font: 600 17px/1 var(--font-display);
}
.wh-footer__name { font: 700 20px/1.2 var(--font-display); letter-spacing: 0.01em; }
.wh-footer__tagline {
  font: 400 11px/1.6 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-62);
}
.wh-footer__brandnote { font-size: 13px; line-height: 1.8; color: var(--mist-62); max-width: 30ch; }

.wh-footer__coltitle {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--mist-14);
  font: 500 11px/1.4 var(--font-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist-45);
}
.wh-footer__list { display: flex; flex-direction: column; gap: 11px; }
.wh-footer__list a {
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist-82);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.wh-footer__list a:hover { color: var(--sand); border-bottom-color: var(--sand); }

.wh-footer__meta {
  display: grid;
  grid-template-columns: 1.6fr 1.4fr;
  gap: clamp(24px, 4vw, 56px);
  padding-top: clamp(26px, 4vw, 44px);
}
.wh-footer__contact { display: flex; flex-direction: column; gap: 8px; }
.wh-footer__contact-line {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 13px;
  line-height: 1.9;
}
.wh-footer__contact-key {
  flex: 0 0 auto;
  min-width: 4.8em;
  font: 500 11px/1.9 var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist-45);
}
.wh-footer__contact-val {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  color: var(--mist);
  word-break: break-all;
}

.wh-footer__legal {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist-45);
}
.wh-footer__legallist { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.wh-footer__legallist a {
  font-size: 13px;
  color: var(--mist-82);
  border-bottom: 1px solid rgba(241, 245, 240, 0.25);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.wh-footer__legallist a:hover { color: var(--sand); border-bottom-color: var(--sand); }
.wh-footer__note { max-width: 46ch; }
.wh-footer__icp { font-family: var(--font-mono); letter-spacing: 0.04em; }
.wh-footer__copy { font-family: var(--font-mono); letter-spacing: 0.08em; color: rgba(241, 245, 240, 0.38); }

/* ---------- 10. 通用组件 ---------- */
/* 网格 */
.wh-cols {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}
.wh-col--3 { grid-column: span 3; }
.wh-col--4 { grid-column: span 4; }
.wh-col--5 { grid-column: span 5; }
.wh-col--6 { grid-column: span 6; }
.wh-col--7 { grid-column: span 7; }
.wh-col--8 { grid-column: span 8; }
.wh-col--9 { grid-column: span 9; }
.wh-col--12 { grid-column: span 12; }

.wh-grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.wh-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.wh-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.wh-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.wh-grid--auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* 斜向分隔 */
.wh-slash {
  height: 14px;
  color: var(--gray);
  opacity: 0.4;
  background-image: repeating-linear-gradient(115deg, currentColor 0 1px, transparent 1px 8px);
}
.wh-section--dark .wh-slash { color: var(--mist); opacity: 0.25; }

/* 点状状态 */
.wh-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue-bright);
}
.wh-dot--sand { background: var(--sand); }
.wh-dot--clay { background: var(--clay); }

/* 标签 */
.wh-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font: 500 11px/1.6 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue-bright);
}
.wh-tag--sand { color: var(--sand); }
.wh-tag--clay { color: var(--clay); }

/* 切角面板 */
.wh-panel {
  --cut: 22px;
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  background-color: var(--green-mid);
  color: var(--mist);
  clip-path: polygon(
    var(--cut) 0, 100% 0,
    100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%,
    0 100%, 0 var(--cut)
  );
}
.wh-panel--blue { background-color: var(--blue-deep); }
.wh-panel--deep { background-color: var(--green-deep); }

/* 切角卡 */
.wh-card {
  --cut: 16px;
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background-color: var(--mist);
  color: var(--ink);
  border: 1px solid var(--paper);
  clip-path: polygon(
    var(--cut) 0, 100% 0,
    100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%,
    0 100%, 0 var(--cut)
  );
  transition: background-color 0.24s var(--ease), transform 0.24s var(--ease);
}
.wh-card:hover { background-color: #ffffff; transform: translateY(-2px); }

/* 档案卡 */
.wh-file {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background-color: rgba(220, 227, 219, 0.5);
  border-left: 2px solid var(--sand);
}
.wh-file__code {
  flex: 0 0 auto;
  font: 500 12px/1.6 var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--blue-deep);
  white-space: nowrap;
}
.wh-file__body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.wh-file__title { font: 700 15px/1.5 var(--font-display); }
.wh-file__meta {
  font: 400 12px/1.6 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--gray);
}

/* 轮次条 */
.wh-rounds {
  display: flex;
  gap: 6px;
  padding: 4px 0 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.wh-rounds__item {
  flex: 0 0 auto;
  scroll-snap-align: center;
  padding: 9px 12px;
  border: 1px solid var(--paper);
  background: transparent;
  color: var(--gray);
  font: 500 13px/1 var(--font-mono);
  letter-spacing: 0.04em;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.wh-rounds__item:hover { border-color: var(--blue-bright); color: var(--blue-deep); }
.wh-rounds__item.is-current {
  background: var(--sand);
  border-color: var(--sand);
  color: var(--green-deep);
  transform: scale(1.06);
}
.wh-section--dark .wh-rounds__item { border-color: rgba(241, 245, 240, 0.22); color: var(--mist-62); }
.wh-section--dark .wh-rounds__item:hover { border-color: var(--sand); color: var(--mist); }

/* 徽章圆环 */
.wh-badge {
  --badge-size: 132px;
  position: relative;
  width: var(--badge-size);
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px solid rgba(12, 46, 74, 0.3);
  border-radius: 50%;
  color: var(--blue-deep);
  text-align: center;
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}
.wh-badge::after {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px dashed rgba(217, 165, 72, 0.55);
  border-radius: 50%;
  transition: transform 0.4s var(--ease);
}
.wh-badge:hover { border-color: var(--sand); transform: translateY(-3px); }
.wh-badge:hover::after { transform: rotate(26deg); }
.wh-badge__abbr { font: 700 20px/1.1 var(--font-mono); letter-spacing: 0.04em; }
.wh-badge__meta {
  font: 400 11px/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  color: var(--gray);
}
.wh-section--dark .wh-badge { border-color: rgba(241, 245, 240, 0.28); color: var(--mist); }
.wh-section--dark .wh-badge__meta { color: var(--mist-62); }

/* 双栏对照 */
.wh-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--paper);
  background: #ffffff;
}
.wh-compare__head {
  padding: 12px 16px;
  background: var(--blue-deep);
  color: var(--mist);
  font: 500 12px/1.4 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.wh-compare__cell {
  padding: 12px 16px;
  border-top: 1px solid var(--paper);
  font-size: 14px;
  line-height: 1.65;
  font-variant-numeric: tabular-nums;
  transition: background-color 0.2s var(--ease);
}
.wh-compare__cell.is-diff {
  background: rgba(181, 83, 60, 0.08);
  box-shadow: inset 2px 0 0 var(--clay);
}
.wh-compare__row:hover .wh-compare__cell { background: rgba(217, 165, 72, 0.16); }

/* 表格 */
.wh-table { width: 100%; font-size: 15px; font-variant-numeric: tabular-nums; }
.wh-table caption {
  text-align: left;
  padding-bottom: 12px;
  font: 500 12px/1.6 var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
}
.wh-table th {
  padding: 12px 14px;
  background: var(--blue-deep);
  color: var(--mist);
  text-align: left;
  font: 500 12px/1.5 var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.wh-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--paper);
  line-height: 1.6;
}
.wh-table tbody tr:nth-child(even) { background: rgba(220, 227, 219, 0.45); }
.wh-table tbody tr:hover { background: rgba(217, 165, 72, 0.16); }

/* 面包屑 */
.wh-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font: 400 12px/1.6 var(--font-mono);
  letter-spacing: 0.08em;
  color: var(--gray);
}
.wh-crumb a {
  color: var(--blue-deep);
  border-bottom: 1px solid rgba(12, 46, 74, 0.3);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.wh-crumb a:hover { color: var(--blue-bright); border-bottom-color: var(--blue-bright); }
.wh-crumb__sep { color: var(--paper); }
.wh-section--dark .wh-crumb { color: var(--mist-62); }
.wh-section--dark .wh-crumb a { color: var(--mist); border-bottom-color: rgba(241, 245, 240, 0.3); }

/* 正文 */
.wh-prose {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.78;
}
.wh-prose > * + * { margin-top: 1.1em; }
.wh-prose h2 {
  margin-top: 2.2em;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.wh-prose h3 { margin-top: 1.8em; font-size: 20px; line-height: 1.35; font-weight: 700; }
.wh-prose ul, .wh-prose ol { display: flex; flex-direction: column; gap: 0.55em; }
.wh-prose li { position: relative; padding-left: 20px; line-height: 1.72; }
.wh-prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 9px;
  height: 1px;
  background: var(--sand);
}
.wh-prose a { color: var(--blue-bright); border-bottom: 1px solid rgba(44, 134, 176, 0.4); }
.wh-prose a:hover { color: var(--blue-deep); }
.wh-prose blockquote {
  padding: 16px 20px;
  border-left: 2px solid var(--sand);
  background: rgba(220, 227, 219, 0.45);
  font-size: 16px;
}
.wh-prose code {
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: rgba(220, 227, 219, 0.75);
}
.wh-prose hr { border: 0; border-top: 1px solid var(--paper); }
.wh-section--dark .wh-prose { color: var(--mist-82); }
.wh-section--dark .wh-prose blockquote { background: rgba(241, 245, 240, 0.06); }
.wh-section--dark .wh-prose code { background: rgba(241, 245, 240, 0.1); }
.wh-section--dark .wh-prose hr { border-top-color: var(--mist-14); }

/* ---------- 11. 图片容器基础规则 ---------- */
.wh-media {
  position: relative;
  display: block;
  overflow: hidden;
  background-color: var(--blue-deep);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(241, 245, 240, 0.05) 0 1px,
    transparent 1px 10px
  );
  border: 1px solid rgba(220, 227, 219, 0.5);
}
.wh-media > img,
.wh-media > video,
.wh-media > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.wh-media--21x9 { aspect-ratio: 21 / 9; }
.wh-media--16x9 { aspect-ratio: 16 / 9; }
.wh-media--4x3 { aspect-ratio: 4 / 3; }
.wh-media--1x1 { aspect-ratio: 1 / 1; }
.wh-media--fill { height: 100%; }
.wh-media--cut {
  --cut: 24px;
  clip-path: polygon(
    var(--cut) 0, 100% 0,
    100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%,
    0 100%, 0 var(--cut)
  );
  border: 0;
}
.wh-media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font: 400 12px/1.6 var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--mist);
  background-image: linear-gradient(180deg, rgba(10, 20, 17, 0) 0%, rgba(10, 20, 17, 0.8) 100%);
}
.wh-media__tag {
  position: absolute;
  top: 0;
  left: 0;
  padding: 6px 11px;
  background: var(--sand);
  color: var(--green-deep);
  font: 600 11px/1 var(--font-mono);
  letter-spacing: 0.1em;
}

/* ---------- 12. 显现动效 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}
html.js [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1100px) {
  .wh-nav__list { gap: 4px; }
  .wh-nav__link { font-size: 13px; }
  .wh-footer__top { grid-template-columns: 1.4fr 1fr 1fr; }
  .wh-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .wh-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wh-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wh-footer__meta { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 900px) {
  .wh-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    display: none;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    background-color: var(--green-deep);
    border-top: 1px solid var(--mist-14);
    box-shadow: 0 24px 44px rgba(10, 20, 17, 0.42);
  }
  .wh-nav[data-open] { display: block; }
  .wh-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px var(--gutter) 22px;
  }
  .wh-nav__link {
    display: block;
    padding: 15px 0;
    font-size: 16px;
    border-bottom: 1px solid rgba(241, 245, 240, 0.1);
  }
  .wh-nav__link::after { display: none; }
  .wh-nav__link[aria-current="page"] { color: var(--sand); }

  .wh-header__inner { gap: 10px; }
  .wh-header__actions { margin-left: auto; }
  .wh-nav-toggle { display: inline-flex; }

  .wh-cols { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .wh-col--3, .wh-col--4, .wh-col--5,
  .wh-col--6, .wh-col--7, .wh-col--8, .wh-col--9 { grid-column: span 6; }
}

@media (max-width: 760px) {
  .wh-header__actions .wh-btn--quiet { display: none; }
  .wh-brand__tagline { display: none; }
  .wh-footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .wh-grid--2, .wh-grid--3, .wh-grid--4 { grid-template-columns: minmax(0, 1fr); }
  .wh-compare { grid-template-columns: minmax(0, 1fr); }
  .wh-compare__head:nth-child(2) { border-top: 1px solid var(--mist-14); }

  /* 表格降级为纵向对照卡 */
  .wh-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }
  .wh-table, .wh-table tbody, .wh-table tr, .wh-table td { display: block; width: 100%; }
  .wh-table tr {
    margin-bottom: 12px;
    padding: 8px 0;
    border: 1px solid var(--paper);
    background: #ffffff;
  }
  .wh-table tbody tr:nth-child(even) { background: #ffffff; }
  .wh-table td {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 16px;
    padding: 6px 14px;
    border-bottom: 0;
    text-align: right;
  }
  .wh-table td::before {
    content: attr(data-label);
    flex: 0 0 auto;
    font: 500 11px/1.6 var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray);
    text-align: left;
  }
}

@media (max-width: 460px) {
  .wh-brand__mark { width: 32px; height: 32px; font-size: 13px; }
  .wh-brand__name { font-size: 16px; }
  .wh-btn--primary { padding: 10px 13px; font-size: 12px; }
  .wh-nav-toggle { padding: 8px 10px; }
  .wh-footer__top { grid-template-columns: minmax(0, 1fr); }
  .wh-footer__contact-line { flex-direction: column; gap: 2px; }
}

/* ---------- 14. 降低动效偏好 ---------- */
@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;
  }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .wh-rounds { scroll-snap-type: none; }
  .wh-rounds__item.is-current { transform: none; }
  .wh-card:hover, .wh-badge:hover { transform: none; }
}