/* ==========================================================================
   万博CN · 共享站点样式 /assets/site.css
   夜间档案阅览室 · 双版本索引系统
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --wb-ink-green: #0B211B;
  --wb-ink-deep: #071712;
  --wb-teal: #123B32;
  --wb-gold: #B08A4A;
  --wb-gold-light: #E7D6B3;
  --wb-paper: #F4EFE4;
  --wb-paper-light: #FBF8F1;
  --wb-ink: #101614;
  --wb-sage: #6F857D;
  --wb-cyan: #49F2D0;
  --wb-coral: #FF7A5C;

  --wb-font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --wb-font-heading: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --wb-font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wb-font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --wb-max: 1320px;
  --wb-index-w: 240px;
  --wb-gutter: clamp(1rem, 3vw, 2.5rem);
  --wb-radius: 2px;
  --wb-ease: cubic-bezier(.22, .61, .36, 1);
  --wb-hair: rgba(176, 138, 74, .38);
}

/* ---------- 2. 重置与基础排版 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 7.5rem;
}

body {
  margin: 0;
  background-color: var(--wb-paper);
  color: var(--wb-ink);
  font-family: var(--wb-font-body);
  font-size: 1.0625rem;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, p, figure, blockquote, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; }
hr { border: 0; border-top: 1px solid rgba(16, 22, 20, .14); margin: 0; }

:focus-visible {
  outline: 2px solid var(--wb-ink-green);
  outline-offset: 3px;
}
.wb-header :focus-visible,
.wb-footer :focus-visible {
  outline-color: var(--wb-cyan);
}

/* ---------- 3. 布局工具 ---------- */
.wb-wrap {
  width: 100%;
  max-width: var(--wb-max);
  margin-inline: auto;
  padding-inline: var(--wb-gutter);
}

.wb-grid {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}
.wb-grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.wb-grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.wb-grid--8-4 { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }
.wb-grid--index { grid-template-columns: var(--wb-index-w) minmax(0, 1fr); }

.wb-stack { display: grid; gap: 1rem; }

.wb-mono {
  font-family: var(--wb-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}
.wb-muted { color: var(--wb-sage); }

/* ---------- 4. 跳至正文 ---------- */
.wb-skip {
  position: fixed;
  top: .6rem;
  left: .6rem;
  z-index: 300;
  transform: translateY(-220%);
  padding: .65rem 1.05rem;
  background: var(--wb-cyan);
  color: #04140F;
  font-family: var(--wb-font-mono);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-decoration: none;
  border-radius: var(--wb-radius);
  transition: transform .16s var(--wb-ease);
}
.wb-skip:focus,
.wb-skip:focus-visible { transform: translateY(0); }

/* ---------- 5. 页头 ---------- */
.wb-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background-color: var(--wb-ink-green);
  color: var(--wb-paper-light);
  border-bottom: 1px solid var(--wb-hair);
  box-shadow: 0 1px 0 rgba(73, 242, 208, .07), 0 18px 34px -26px rgba(0, 0, 0, .92);
}

.wb-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background-color: rgba(231, 214, 179, .14);
  pointer-events: none;
}
.wb-progress-bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--wb-gold) 0%, var(--wb-cyan) 100%);
  transition: transform .1s linear;
}

/* 上层 · 版本说明条 */
.wb-utility {
  background-color: rgba(7, 23, 18, .55);
  border-bottom: 1px solid rgba(231, 214, 179, .14);
}
.wb-utility-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1.5rem;
  min-height: 44px;
  padding-block: .5rem;
}
.wb-brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .5rem;
  margin: 0;
}
.wb-brand-name {
  font-family: var(--wb-font-display);
  font-weight: 900;
  font-size: .9375rem;
  letter-spacing: .1em;
  color: var(--wb-paper-light);
}
.wb-brand-sep { color: var(--wb-gold); opacity: .85; }
.wb-brand-line {
  font-family: var(--wb-font-heading);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--wb-gold-light);
}
.wb-brand-tagline {
  font-family: var(--wb-font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  color: var(--wb-sage);
}
.wb-brand-tagline::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 1px;
  margin-right: .5rem;
  vertical-align: middle;
  background: var(--wb-gold);
  opacity: .75;
}

.wb-utility-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem 1.15rem;
}
.wb-utility-link {
  font-family: var(--wb-font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--wb-sage);
  text-decoration: none;
  padding-block: .2rem;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--wb-ease), border-color .16s var(--wb-ease);
}
.wb-utility-link:hover,
.wb-utility-link:focus-visible {
  color: var(--wb-cyan);
  border-bottom-color: var(--wb-cyan);
}

/* 下层 · 栏目索引带 */
.wb-header-main {
  background-color: var(--wb-ink-green);
}
.wb-main-inner {
  display: flex;
  align-items: center;
  gap: clamp(.6rem, 2vw, 2rem);
  min-height: 64px;
  padding-block: .35rem;
}
.wb-index-label {
  display: none;
  flex: 0 0 var(--wb-index-w);
  width: var(--wb-index-w);
  margin: 0;
  font-family: var(--wb-font-mono);
  font-size: .6875rem;
  letter-spacing: .26em;
  color: var(--wb-gold);
}
.wb-index-label::after {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  margin-left: .75rem;
  vertical-align: middle;
  background: var(--wb-gold);
  opacity: .7;
}

.wb-nav {
  flex: 1 1 auto;
  min-width: 0;
}
.wb-nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .1rem clamp(.3rem, 1.4vw, 1.15rem);
}
.wb-nav-link {
  position: relative;
  display: inline-block;
  padding: .7rem .3rem;
  font-family: var(--wb-font-heading);
  font-size: .9375rem;
  font-weight: 500;
  letter-spacing: .05em;
  color: rgba(244, 239, 228, .84);
  text-decoration: none;
  transition: color .16s var(--wb-ease);
}
.wb-nav-link::before {
  content: "";
  position: absolute;
  left: .3rem;
  right: .3rem;
  bottom: .28rem;
  height: 1px;
  background: var(--wb-cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .18s var(--wb-ease), background-color .16s var(--wb-ease);
}
.wb-nav-link:hover,
.wb-nav-link:focus-visible { color: var(--wb-paper-light); }
.wb-nav-link:hover::before,
.wb-nav-link:focus-visible::before { transform: scaleX(1); }
.wb-nav-link[aria-current="page"] {
  color: var(--wb-cyan);
  font-weight: 700;
}
.wb-nav-link[aria-current="page"]::before {
  transform: scaleX(1);
  background: var(--wb-gold);
}

.wb-header-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem .95rem;
  background-color: var(--wb-coral);
  border: 1px solid var(--wb-coral);
  border-radius: var(--wb-radius);
  color: #200803;
  font-family: var(--wb-font-heading);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .16s var(--wb-ease), color .16s var(--wb-ease), transform .16s var(--wb-ease);
}
.wb-header-cta:hover,
.wb-header-cta:focus-visible {
  background-color: transparent;
  color: var(--wb-coral);
  transform: translateY(-2px);
}

.wb-nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  padding: .45rem .7rem;
  background: transparent;
  border: 1px solid rgba(231, 214, 179, .34);
  border-radius: var(--wb-radius);
  color: var(--wb-paper);
  font-family: var(--wb-font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  cursor: pointer;
  transition: border-color .16s var(--wb-ease), color .16s var(--wb-ease);
}
.wb-nav-toggle:hover,
.wb-nav-toggle:focus-visible {
  border-color: var(--wb-cyan);
  color: var(--wb-cyan);
}
.wb-nav-toggle[data-open="true"] {
  border-color: var(--wb-gold);
  color: var(--wb-gold);
}
.wb-nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 14px;
}
.wb-nav-toggle-bars i {
  display: block;
  height: 1px;
  width: 100%;
  background-color: currentColor;
  transition: transform .16s var(--wb-ease), opacity .16s var(--wb-ease);
}
.wb-nav-toggle[data-open="true"] .wb-nav-toggle-bars i:first-child {
  transform: translateY(2.5px) rotate(45deg);
}
.wb-nav-toggle[data-open="true"] .wb-nav-toggle-bars i:last-child {
  transform: translateY(-2.5px) rotate(-45deg);
}

/* ---------- 6. 按钮 ---------- */
.wb-btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .7rem 1.1rem;
  border: 1px solid var(--wb-ink-green);
  border-radius: var(--wb-radius);
  background-color: transparent;
  color: var(--wb-ink-green);
  font-family: var(--wb-font-heading);
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .16s var(--wb-ease), color .16s var(--wb-ease),
              border-color .16s var(--wb-ease), transform .16s var(--wb-ease);
}
.wb-btn:hover { transform: translateY(-2px); }
.wb-btn--primary {
  background-color: var(--wb-ink-green);
  border-color: var(--wb-ink-green);
  color: var(--wb-paper-light);
}
.wb-btn--primary:hover,
.wb-btn--primary:focus-visible {
  background-color: var(--wb-teal);
  border-color: var(--wb-cyan);
  color: var(--wb-cyan);
}
.wb-btn--ghost {
  border-color: rgba(16, 22, 20, .26);
  color: var(--wb-ink);
}
.wb-btn--ghost:hover,
.wb-btn--ghost:focus-visible {
  border-color: var(--wb-coral);
  color: var(--wb-coral);
}
.wb-btn--coral {
  background-color: var(--wb-coral);
  border-color: var(--wb-coral);
  color: #200803;
}
.wb-btn--coral:hover,
.wb-btn--coral:focus-visible {
  background-color: #E2603F;
  border-color: #E2603F;
  color: var(--wb-paper-light);
}
.wb-btn[data-copied="true"] {
  background-color: var(--wb-teal);
  border-color: var(--wb-cyan);
  color: var(--wb-cyan);
}

/* ---------- 7. 面包屑 ---------- */
.wb-crumb { margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.wb-crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .5rem;
  font-family: var(--wb-font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--wb-sage);
}
.wb-crumb-item {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}
.wb-crumb-item:not(:last-child)::after {
  content: "/";
  color: var(--wb-gold);
  opacity: .8;
}
.wb-crumb-link {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--wb-ease), border-color .16s var(--wb-ease);
}
.wb-crumb-link:hover,
.wb-crumb-link:focus-visible {
  color: var(--wb-ink);
  border-bottom-color: var(--wb-coral);
}
.wb-crumb-current { color: var(--wb-ink); }

/* ---------- 8. 正文与标题 ---------- */
.wb-prose {
  max-width: 68ch;
  font-size: 1.0625rem;
  line-height: 1.85;
}
.wb-prose > p + p { margin-top: 1.05em; }
.wb-prose a {
  color: var(--wb-teal);
  text-decoration: none;
  border-bottom: 1px solid var(--wb-gold);
  transition: color .16s var(--wb-ease), border-color .16s var(--wb-ease);
}
.wb-prose a:hover,
.wb-prose a:focus-visible {
  color: var(--wb-coral);
  border-bottom-color: var(--wb-coral);
}
.wb-prose strong { font-weight: 700; }
.wb-prose ul {
  list-style: disc;
  padding-left: 1.25rem;
  margin-block: .9em;
}
.wb-prose ol {
  list-style: decimal;
  padding-left: 1.35rem;
  margin-block: .9em;
}
.wb-prose li + li { margin-top: .4em; }

.wb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--wb-font-mono);
  font-size: .6875rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--wb-gold);
}
.wb-eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background-color: var(--wb-gold);
}
.wb-section-title {
  font-family: var(--wb-font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.24;
  letter-spacing: .01em;
  color: var(--wb-ink);
}

/* ---------- 9. 档案卡 / 标签带 / 表格 / 折叠块 ---------- */
.wb-card {
  position: relative;
  padding: clamp(1.15rem, 2.4vw, 1.85rem);
  background-color: var(--wb-paper-light);
  border: 1px solid var(--wb-hair);
  border-radius: var(--wb-radius);
  box-shadow: 0 1px 0 rgba(16, 22, 20, .04), 0 18px 32px -28px rgba(11, 33, 27, .55);
  transition: border-color .16s var(--wb-ease), box-shadow .16s var(--wb-ease), transform .16s var(--wb-ease);
}
.wb-card:hover,
.wb-card:focus-within {
  border-color: var(--wb-gold);
  box-shadow: 0 1px 0 rgba(16, 22, 20, .05), 0 24px 40px -28px rgba(11, 33, 27, .62);
  transform: translateY(-2px);
}

.wb-tag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.wb-tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .28rem .68rem;
  background-color: rgba(231, 214, 179, .38);
  border: 1px solid rgba(16, 22, 20, .18);
  border-radius: 999px;
  color: var(--wb-teal);
  font-family: var(--wb-font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .16s var(--wb-ease), color .16s var(--wb-ease),
              border-color .16s var(--wb-ease);
}
.wb-tag:hover,
.wb-tag:focus-visible {
  border-color: var(--wb-coral);
  color: var(--wb-coral);
}
.wb-tag[aria-pressed="true"],
.wb-tag[data-active="true"] {
  background-color: var(--wb-ink-green);
  border-color: var(--wb-ink-green);
  color: var(--wb-cyan);
}

.wb-table {
  width: 100%;
  font-size: .9375rem;
  line-height: 1.6;
}
.wb-table th,
.wb-table td {
  padding: .75rem .85rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(16, 22, 20, .14);
}
.wb-table thead th {
  background-color: var(--wb-gold-light);
  border-bottom: 1px solid rgba(176, 138, 74, .6);
  font-family: var(--wb-font-mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--wb-ink);
}
.wb-table tbody tr {
  transition: background-color .16s var(--wb-ease);
}
.wb-table tbody tr:hover {
  background-color: rgba(231, 214, 179, .34);
}

.wb-fold {
  border-bottom: 1px solid rgba(16, 22, 20, .16);
}
.wb-fold summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem 0;
  font-family: var(--wb-font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--wb-ink);
  cursor: pointer;
  list-style: none;
  transition: color .16s var(--wb-ease);
}
.wb-fold summary::-webkit-details-marker { display: none; }
.wb-fold summary::after {
  content: "+";
  font-family: var(--wb-font-mono);
  font-size: 1rem;
  color: var(--wb-gold);
  transition: color .16s var(--wb-ease);
}
.wb-fold[open] summary::after { content: "–"; }
.wb-fold summary:hover,
.wb-fold summary:focus-visible { color: var(--wb-teal); }
.wb-fold-body {
  padding-bottom: 1.15rem;
  color: var(--wb-ink);
  font-size: .9375rem;
  line-height: 1.8;
}

/* ---------- 10. 侧索引 ---------- */
.wb-side-index {
  position: sticky;
  top: 7.5rem;
  align-self: start;
  display: grid;
  gap: .6rem;
}
.wb-side-index-list {
  display: grid;
  gap: .1rem;
  border-left: 1px solid rgba(16, 22, 20, .14);
}
.wb-side-index-link {
  display: block;
  padding: .45rem .6rem .45rem .9rem;
  color: var(--wb-sage);
  font-family: var(--wb-font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color .16s var(--wb-ease), border-color .16s var(--wb-ease), padding-left .16s var(--wb-ease);
}
.wb-side-index-link:hover,
.wb-side-index-link:focus-visible {
  color: var(--wb-ink);
  border-left-color: var(--wb-coral);
  padding-left: 1.1rem;
}
.wb-side-index-link[aria-current="true"] {
  color: var(--wb-teal);
  border-left-color: var(--wb-coral);
  padding-left: 1.1rem;
  font-weight: 600;
}

/* ---------- 11. 图片容器基础规则 ---------- */
.wb-media {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  aspect-ratio: 16 / 10;
  background-color: var(--wb-teal);
  border: 1px solid var(--wb-hair);
  border-radius: var(--wb-radius);
}
.wb-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .78;
  filter: saturate(.75) contrast(1.05);
  transition: opacity .18s var(--wb-ease), transform .18s var(--wb-ease);
}
.wb-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 33, 27, 0) 42%, rgba(11, 33, 27, .82) 100%);
  pointer-events: none;
}
.wb-media:hover img { opacity: .92; }
.wb-media--square { aspect-ratio: 1 / 1; }
.wb-media--wide { aspect-ratio: 21 / 9; }
.wb-media--portrait { aspect-ratio: 3 / 4; }

/* ---------- 12. 页脚 ---------- */
.wb-footer {
  position: relative;
  overflow: hidden;
  background-color: var(--wb-teal);
  color: var(--wb-paper);
  border-top: 1px solid var(--wb-hair);
}
.wb-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(231, 214, 179, .05) 0,
    rgba(231, 214, 179, .05) 1px,
    transparent 1px,
    transparent 96px
  );
  pointer-events: none;
}
.wb-footer-inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(2.5rem, 6vw, 4.5rem) 1.5rem;
}
.wb-footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) repeat(3, minmax(0, .8fr));
  gap: clamp(1.5rem, 4vw, 3rem);
}
.wb-footer-name {
  font-family: var(--wb-font-display);
  font-weight: 900;
  font-size: 1.25rem;
  line-height: 1.45;
  letter-spacing: .08em;
  color: var(--wb-paper-light);
}
.wb-footer-summary {
  margin-top: .7rem;
  max-width: 26ch;
  color: rgba(244, 239, 228, .72);
  font-size: .9375rem;
  line-height: 1.75;
}
.wb-footer-brand-link {
  display: inline-block;
  margin-top: 1.1rem;
  color: var(--wb-gold-light);
  border-bottom: 1px solid var(--wb-gold);
}
.wb-footer-brand-link:hover,
.wb-footer-brand-link:focus-visible {
  color: var(--wb-cyan);
  border-bottom-color: var(--wb-cyan);
}
.wb-footer-col-title {
  margin-bottom: .95rem;
  font-family: var(--wb-font-mono);
  font-size: .6875rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--wb-gold);
}
.wb-footer-links { display: grid; gap: .55rem; }
.wb-footer-link {
  display: inline-block;
  padding-bottom: 1px;
  color: rgba(244, 239, 228, .82);
  font-size: .9375rem;
  line-height: 1.55;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--wb-ease), border-color .16s var(--wb-ease);
}
.wb-footer-link:hover,
.wb-footer-link:focus-visible {
  color: var(--wb-cyan);
  border-bottom-color: var(--wb-cyan);
}

.wb-contact-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem 1.75rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(231, 214, 179, .2);
}
.wb-contact-item { margin: 0; }
.wb-contact-label {
  display: block;
  margin-bottom: .35rem;
  font-family: var(--wb-font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  color: var(--wb-gold);
}
.wb-contact-value {
  display: block;
  color: var(--wb-paper);
  font-size: .9375rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.wb-footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem 1.5rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(231, 214, 179, .2);
  font-family: var(--wb-font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: rgba(244, 239, 228, .62);
}
.wb-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
}
.wb-legal-item { color: rgba(244, 239, 228, .78); }
.wb-legal-dot { color: var(--wb-gold); opacity: .8; }
.wb-copy { color: rgba(244, 239, 228, .62); }

/* ---------- 13. 响应式 ---------- */
@media (min-width: 901px) {
  .wb-index-label { display: block; }
}

@media (max-width: 1120px) {
  .wb-footer-top {
    grid-template-columns: minmax(0, 1fr) repeat(3, minmax(0, 1fr));
  }
  .wb-footer-brand { grid-column: 1 / -1; }
  .wb-footer-summary { max-width: 46ch; }
}

@media (max-width: 1023px) {
  .wb-grid--7-5,
  .wb-grid--5-7,
  .wb-grid--8-4,
  .wb-grid--index { grid-template-columns: minmax(0, 1fr); }
  .wb-side-index { position: static; }
  .wb-side-index-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 0;
    overflow-x: auto;
    border-left: 0;
    border-bottom: 1px solid rgba(16, 22, 20, .14);
    padding-bottom: .35rem;
    scrollbar-width: thin;
  }
  .wb-side-index-link {
    flex: 0 0 auto;
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: .5rem .9rem;
    margin-left: 0;
  }
  .wb-side-index-link:hover,
  .wb-side-index-link:focus-visible,
  .wb-side-index-link[aria-current="true"] {
    padding-left: .9rem;
    border-bottom-color: var(--wb-coral);
  }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 6.5rem; }

  .wb-main-inner {
    justify-content: space-between;
    min-height: 58px;
  }
  .wb-nav-toggle { display: inline-flex; }
  .wb-header-cta {
    padding: .5rem .8rem;
    font-size: .75rem;
    letter-spacing: .03em;
  }
  .wb-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    order: 3;
    max-height: calc(100vh - 6.5rem);
    overflow-y: auto;
    padding: .5rem var(--wb-gutter) 1.35rem;
    background-color: var(--wb-ink-green);
    border-top: 1px solid rgba(231, 214, 179, .16);
    border-bottom: 1px solid var(--wb-hair);
    box-shadow: 0 32px 50px -30px rgba(0, 0, 0, .95);
  }
  .wb-nav[data-open="true"] { display: block; }
  .wb-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .wb-nav-list > li + li { border-top: 1px solid rgba(231, 214, 179, .12); }
  .wb-nav-link {
    display: block;
    padding: .85rem 0;
    font-size: 1.0625rem;
    color: var(--wb-paper);
  }
  .wb-nav-link::before { display: none; }
  .wb-nav-link[aria-current="page"] {
    color: var(--wb-cyan);
    box-shadow: inset 2px 0 0 var(--wb-gold);
    padding-left: .7rem;
  }
}

@media (max-width: 760px) {
  .wb-brand-tagline { display: none; }
  .wb-utility-inner { min-height: 40px; }
  .wb-footer-top { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .wb-footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }
  .wb-brand-line { display: none; }
  .wb-header-cta { font-size: .6875rem; padding: .45rem .65rem; }
  .wb-footer-top { grid-template-columns: minmax(0, 1fr); }
  .wb-contact-band { grid-template-columns: minmax(0, 1fr); }
  .wb-footer-bottom { flex-direction: column; align-items: flex-start; }
  .wb-table { font-size: .875rem; }
  .wb-table th,
  .wb-table td { padding: .6rem .55rem; }
}

/* ---------- 14. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .wb-card:hover,
  .wb-card:focus-within,
  .wb-btn:hover,
  .wb-header-cta:hover {
    transform: none;
  }
}