/* ─── Palette (brittanychiang.com inspired) ─── */
:root {
  --navy:           #0a192f;
  --light-navy:     #112240;
  --lightest-navy:  #233554;
  --slate:          #8892b0;
  --light-slate:    #a8b2d8;
  --lightest-slate: #ccd6f6;
  --white:          #e6f1ff;
  --green:          #64ffda;
  --green-tint:     rgba(100, 255, 218, .07);

  --mono: "SF Mono","Fira Code","Fira Mono","Roboto Mono","Courier New",monospace;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
body  { background: var(--navy); color: var(--slate); font-size: 15px; line-height: 1.7; }
a     { color: inherit; text-decoration: none; }
img   { display: block; max-width: 100%; }
strong { color: var(--lightest-slate); }

/* ─── Layout ────────────────────────────────── */
.layout {
  display: flex;
  min-height: 100vh;
  max-width: 1280px;
  margin: 0 auto;
}

/* ─── Sidebar ───────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: 34%;
  max-width: 360px;
  height: 100vh;
  padding: 0 clamp(24px, 4vw, 56px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  /* 让 sidebar 的左边距在大屏幕上随 layout max-width 居中 */
}

/* 在 max-width: 1280px 居中时，sidebar 要跟着偏移 */
@media (min-width: 1280px) {
  .sidebar {
    left: calc((100vw - 1280px) / 2);
  }
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: min(700px, 90vh);
}

.sidebar-top { flex-shrink: 0; }

.s-name {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--lightest-slate);
  line-height: 1.1;
  margin-bottom: 12px;
}

.s-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--green);
  margin-bottom: 20px;
  letter-spacing: .01em;
}

.s-bio {
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 300px;
}

/* Nav */
.s-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 48px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate);
  transition: color 200ms ease;
  width: fit-content;
}

.nav-line {
  display: block;
  height: 1px;
  width: 32px;
  background: currentColor;
  transition: width 250ms ease, background 200ms ease;
  flex-shrink: 0;
}

.nav-item:hover,
.nav-item.active {
  color: var(--lightest-slate);
}

.nav-item:hover .nav-line,
.nav-item.active .nav-line {
  width: 64px;
}

.nav-item.active {
  color: var(--green);
}

.nav-item.active .nav-line {
  background: var(--green);
  width: 64px;
}

/* Footer */
.sidebar-foot {
  margin-top: auto;
  display: flex;
  gap: 16px;
  align-items: center;
}

.foot-copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--lightest-navy);
}

/* ─── Content ───────────────────────────────── */
.content {
  margin-left: 34%;
  max-width: calc(100% - 34%);
  padding: 100px clamp(24px, 5vw, 72px) 100px;
  flex: 1;
}

@media (min-width: 1280px) {
  .sidebar { width: 360px; max-width: 360px; }
  .content { margin-left: 360px; max-width: calc(1280px - 360px); }
}

.c-section {
  margin-bottom: 96px;
  scroll-margin-top: 80px;
}

.sec-heading {
  font-family: var(--mono);
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.sec-heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--lightest-navy);
}

/* ─── About ─────────────────────────────────── */
.about-body p {
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-body p:last-of-type { margin-bottom: 24px; }

.about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid var(--green);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--green);
  letter-spacing: .04em;
  background: transparent;
  transition: background 160ms;
}
.chip:hover { background: var(--green-tint); }

/* ─── Activities（文本条目，非卡片） ───────────── */
.activity-list {
  display: flex;
  flex-direction: column;
}

.activity-item {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--lightest-navy);
  transition: padding-left 200ms ease;
}
.activity-item:last-child { border-bottom: none; }
a.activity-item:hover { padding-left: 8px; }

.activity-date {
  flex: 0 0 72px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--slate);
  white-space: nowrap;
}

.activity-title {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--lightest-slate);
  line-height: 1.5;
  transition: color 160ms;
}
a.activity-item:hover .activity-title { color: var(--green); }

.activity-tag {
  flex: 0 0 64px;
  text-align: right;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .04em;
  color: var(--green);
  white-space: nowrap;
}

.activity-arrow {
  flex: 0 0 12px;
  text-align: right;
  font-size: 13px;
  color: var(--slate);
  opacity: 0;
  transition: opacity 160ms, transform 160ms, color 160ms;
}
a.activity-item:hover .activity-arrow {
  opacity: 1;
  transform: translate(2px, -2px);
  color: var(--green);
}

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--green);
  transition: gap 160ms;
}
.more-link:hover { gap: 10px; }

/* ─── Project Cards ─────────────────────────── */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--light-navy);
  border: 1px solid var(--lightest-navy);
  border-radius: 4px;
  padding: 24px;
  transition: background 200ms, border-color 200ms, transform 200ms;
  position: relative;
}

.project-card:hover {
  background: var(--lightest-navy);
  border-color: var(--green);
  transform: translateY(-4px);
}

.project-card:hover .proj-arrow { opacity: 1; transform: translate(2px, -2px); }

.proj-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.proj-arrow {
  font-size: 18px;
  color: var(--green);
  opacity: 0;
  transition: opacity 200ms, transform 200ms;
  flex-shrink: 0;
}

.project-badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 4px;
}

.project-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--lightest-slate);
  line-height: 1.3;
}

.project-card p {
  font-size: 13px;
  color: var(--slate);
  line-height: 1.65;
  flex: 1;
}

.project-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

/* ─── 笔记连载：章节横条 ───────────────────────────── */
.chapter-list { display: flex; flex-direction: column; gap: 14px; }

.chapter-row {
  display: flex;
  align-items: stretch;
  gap: 18px;
  background: var(--light-navy);
  border: 1px solid var(--lightest-navy);
  border-radius: 10px;
  padding: 16px;
  transition: transform 200ms, border-color 200ms;
}
.chapter-row:hover { transform: translateY(-2px); border-color: var(--green); }
.chapter-row.upcoming { opacity: .45; }
.chapter-row.upcoming:hover { transform: none; border-color: var(--lightest-navy); }

.ch-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
}
.ch-meta { display: flex; align-items: center; gap: 10px; }
.ch-badge {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 3px;
  padding: 1px 7px;
}
.chapter-row.upcoming .ch-badge { color: var(--slate); border-color: var(--slate); }
.ch-date { font-family: var(--mono); font-size: 11px; color: var(--slate); }
.ch-main {
  font-size: 17px;
  font-weight: 600;
  color: var(--lightest-slate);
  letter-spacing: -.01em;
  line-height: 1.4;
}
.ch-main a { color: inherit; }
.ch-sub-t { font-size: 13px; color: var(--light-slate); line-height: 1.6; }
.ch-quote {
  font-size: 12px;
  color: var(--slate);
  font-style: italic;
  line-height: 1.6;
  border-left: 2px solid var(--lightest-navy);
  padding-left: 10px;
}

.ch-read {
  flex: 0 0 auto;
  align-self: center;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: 1px solid var(--green);
  border-radius: 6px;
  color: var(--green);
  font-family: var(--mono);
  font-size: 13px;
  white-space: nowrap;
  transition: background 180ms;
}
.ch-read:hover { background: rgba(100, 255, 218, .1); }

.btn-xs {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 30px;
  padding: 0 12px;
  border-radius: 3px;
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background 150ms, color 150ms;
  white-space: nowrap;
}
.btn-xs:hover { background: var(--green-tint); }

/* ─── Channel ───────────────────────────────── */
.qr-box {
  border: 1px solid var(--lightest-navy);
  border-radius: 6px;
  background: var(--light-navy);
  padding: 10px;
}
.qr-box.sm { max-width: 160px; }
.qr-box img { width: 100%; border-radius: 4px; }

.ch-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--lightest-slate);
  letter-spacing: -.01em;
}
.ch-sub {
  font-size: 12px;
  color: var(--slate);
  line-height: 1.7;
}

/* 竖版视频条 */
.video-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.vcard {
  flex: 0 0 128px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--lightest-navy);
  background: var(--light-navy);
  cursor: pointer;
  transition: transform 200ms, border-color 200ms;
}
.vcard:hover {
  transform: translateY(-4px);
  border-color: var(--green);
}

.vthumb {
  aspect-ratio: 9 / 16;
  background: linear-gradient(175deg, var(--c1) 0%, var(--c2) 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.play-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  border: 1.5px solid rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: #fff;
  padding-left: 2px;
  transition: background 180ms, border-color 180ms;
}
.vcard:hover .play-btn {
  background: rgba(100, 255, 218, .2);
  border-color: var(--green);
  color: var(--green);
}
.vdur {
  position: absolute; bottom: 6px; right: 7px;
  font-family: var(--mono); font-size: 9px;
  color: rgba(255,255,255,.6);
  background: rgba(0,0,0,.5);
  border-radius: 2px; padding: 1px 5px;
}

.vfoot {
  padding: 8px 10px;
  background: var(--lightest-navy);
}
.vtitle {
  font-size: 11px;
  font-weight: 500;
  color: var(--light-slate);
  line-height: 1.45;
  margin-bottom: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.vmeta {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--slate);
}
.vposter {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;       /* 完整显示封面，不裁切文字 */
  background: var(--navy);    /* 比例不符时两侧/上下留深色边 */
}

/* 二维码卡片（排在视频卡片之后，与之同宽参与换行） */
.qr-vcard { cursor: default; }
.qr-vcard:hover { transform: none; border-color: var(--green); }
.qr-vthumb {
  aspect-ratio: 9 / 16;
  background: var(--light-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
}
.qr-vthumb img {
  width: 100%;
  max-width: 100px;
  border-radius: 4px;
}
.qr-vcard .vtitle { -webkit-line-clamp: 1; }
.play-btn, .vdur { position: relative; z-index: 1; }
.vdur { position: absolute; }

/* 视频播放弹层 */
.video-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(2, 7, 18, .88);
  backdrop-filter: blur(4px);
}
.video-lightbox[hidden] { display: none; }

.vlb-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  max-width: 100%;
}
.vlb-video {
  max-height: 80vh;
  max-width: min(420px, 92vw);
  aspect-ratio: 9 / 16;
  background: #000;
  border-radius: 10px;
  border: 1px solid var(--lightest-navy);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .5);
}
.vlb-title {
  font-size: 14px;
  color: var(--light-slate);
  text-align: center;
  max-width: 420px;
  line-height: 1.5;
}
.vlb-close {
  position: absolute;
  top: 18px;
  right: 22px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--lightest-navy);
  background: var(--light-navy);
  color: var(--lightest-slate);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: border-color 180ms, color 180ms;
}
.vlb-close:hover { border-color: var(--green); color: var(--green); }

/* ─── Connect ───────────────────────────────── */
.connect-wrap {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: start;
}

.wechat-col { display: flex; flex-direction: column; gap: 12px; }

.msg-form {
  background: var(--light-navy);
  border: 1px solid var(--lightest-navy);
  border-radius: 4px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--light-slate);
}

.field input,
.msg-form textarea {
  border: 1px solid var(--lightest-navy);
  border-radius: 3px;
  background: var(--navy);
  padding: 10px 14px;
  font: inherit;
  font-size: 14px;
  color: var(--lightest-slate);
  outline: none;
  width: 100%;
  transition: border-color 150ms, box-shadow 150ms;
}
.field input:focus,
.msg-form textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(100, 255, 218, .08);
}
.field input::placeholder,
.msg-form textarea::placeholder { color: var(--lightest-navy); }
.msg-form textarea { resize: vertical; min-height: 100px; }

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: 3px;
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
  font: inherit;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  cursor: pointer;
  width: fit-content;
  transition: background 150ms, transform 100ms;
}
.btn-accent:hover { background: var(--green-tint); }
.btn-accent:active { transform: scale(.97); }

.form-hint { font-family: var(--mono); font-size: 12px; color: var(--green); }
.form-hint.error { color: #ff6b6b; }

/* ─── Responsive ────────────────────────────── */
@media (max-width: 900px) {
  .layout { display: block; }

  .sidebar {
    position: static;
    width: 100%;
    max-width: 100%;
    height: auto;
    padding: 48px clamp(20px, 5vw, 48px) 32px;
  }
  .sidebar-inner { height: auto; gap: 32px; }
  .s-nav { flex-direction: row; flex-wrap: wrap; gap: 8px 24px; margin-top: 0; }
  .nav-line { display: none; }
  .nav-item { font-size: 12px; padding: 4px 0; }
  .sub-nav {
    flex-direction: row; flex-wrap: wrap;
    gap: 6px 16px;
    margin-left: 0; padding-left: 0;
    border-left: none;
    width: 100%;
  }
  .sidebar-foot { margin-top: 16px; }

  .content {
    margin-left: 0;
    max-width: 100%;
    padding: 48px clamp(20px, 5vw, 48px);
  }

  .proj-grid { grid-template-columns: 1fr; }
  .connect-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .activity-item { flex-wrap: wrap; gap: 4px 18px; }
  .activity-title { flex: 1 1 100%; order: 3; margin-top: 2px; }

  .chapter-row { flex-wrap: wrap; }
  .ch-read { width: 100%; justify-content: center; margin-top: 4px; }
}

@media (max-width: 520px) {
  .s-name { font-size: 36px; }
  .proj-grid { grid-template-columns: 1fr; }
}

/* ─── 书籍子页：返回链接 / 连载状态 / 禁用导航项 ─── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--slate);
  margin-bottom: 24px;
  transition: color 160ms;
}
.back-link:hover { color: var(--green); }

.book-status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--green);
  margin-bottom: 14px;
}
.book-status-tag::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: blink 2s ease-in-out infinite;
}

.nav-item.disabled {
  opacity: .35;
  pointer-events: none;
  cursor: default;
}

/* 二级导航（缩进，嵌套在某个一级导航项下方） */
.sub-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 2px 0 6px 16px;
  padding-left: 16px;
  border-left: 1px solid var(--lightest-navy);
}
.sub-nav .nav-item { font-size: 11.5px; gap: 12px; padding: 6px 0; }
.sub-nav .nav-line { width: 16px; }
.sub-nav .nav-item:hover .nav-line,
.sub-nav .nav-item.active .nav-line { width: 32px; }

/* 活动二级导航：标题较长，顶端对齐 + 最多两行省略 */
#activity-subnav .nav-item { align-items: flex-start; }
#activity-subnav .nav-line { margin-top: 7px; }
#activity-subnav .sub-label {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}
.nav-more { color: var(--green); text-transform: none; letter-spacing: 0; }

/* ─── 书籍子页：章节阅读正文 ─── */
.chapter-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
}

.chapter-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--lightest-slate);
  margin-bottom: 36px;
  line-height: 1.25;
}

.chapter-text {
  font-size: 16px;
  line-height: 1.9;
  color: var(--light-slate);
}
.chapter-text p { margin-bottom: 1.6em; }

/* 活动详情页：来源/标签/配图/小标题 */
.art-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin: -16px 0 28px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
}
.art-tag {
  color: var(--green);
  border: 1px solid var(--green);
  border-radius: 3px;
  padding: 1px 8px;
}
.art-meta a { color: var(--green); }
.art-meta a:hover { opacity: .7; }

.art-hero {
  margin: 0 0 36px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--lightest-navy);
}
.art-hero img { width: 100%; display: block; }

/* 正文内嵌单图 */
.art-fig {
  margin: 2em 0;
}
.art-fig img {
  width: 100%;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--lightest-navy);
}
.art-fig figcaption,
.art-gallery figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
  text-align: center;
}

/* 横向滑动图集（授牌 / 颁奖） */
.art-gallery { margin: 2em 0; }
.art-gallery-strip {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 10px;
  scroll-snap-type: x mandatory;
}
.art-gallery-strip img {
  flex: 0 0 auto;
  width: 78%;
  max-width: 420px;
  border-radius: 8px;
  border: 1px solid var(--lightest-navy);
  scroll-snap-align: start;
}
.art-gallery-strip::-webkit-scrollbar { height: 5px; }
.art-gallery-strip::-webkit-scrollbar-track { background: var(--lightest-navy); border-radius: 3px; }
.art-gallery-strip::-webkit-scrollbar-thumb { background: var(--slate); border-radius: 3px; }

.art-h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--lightest-slate);
  letter-spacing: -.01em;
  line-height: 1.4;
  margin: 2.2em 0 1em;
}
.art-num {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--green);
  flex-shrink: 0;
}
.art-h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--green);
  margin: 1.8em 0 1em;
  padding-left: 12px;
  border-left: 3px solid var(--green);
}
.chapter-prevnext a + a { text-align: right; }

.chapter-placeholder {
  display: grid;
  min-height: 180px;
  place-items: center;
  border: 1px dashed var(--lightest-navy);
  border-radius: 6px;
  color: var(--slate);
  font-family: var(--mono);
  font-size: 13px;
}

.chapter-prevnext {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--lightest-navy);
  font-family: var(--mono);
  font-size: 13px;
}
.chapter-prevnext a { color: var(--green); transition: opacity 150ms; }
.chapter-prevnext a:hover { opacity: .7; }
.chapter-prevnext span { color: var(--lightest-navy); }