/* ==========================================================================
   歪歪羞羞漫画入口 · 全站样式表
   档案馆式索引风：纸白底 + 墨黑正文 + 深青主强调 + 赭红变更标记
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 变量、重置、排版基础
   -------------------------------------------------------------------------- */
:root {
  --paper: #f5f2ec;
  --card: #ffffff;
  --ink: #1d1c1a;
  --ink-soft: #6d675d;
  --accent: #2f5d62;
  --accent-deep: #24494d;
  --mark: #a8452f;
  --line: #d9d3c7;
  --line-soft: #e8e3d9;

  --font-serif: "Songti SC", "Noto Serif SC", "SimSun", "STSong", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", monospace;

  --shell: 1120px;
  --read: 760px;
  --radius: 6px;
  --radius-sm: 4px;
  --gap: 24px;
  --header-h: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.8;
  min-width: 320px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

p {
  margin: 0;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--mark);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

figure {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   layout · 骨架容器：页头、主导航、主区、面包屑、页脚
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--shell);
  height: var(--header-h);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  flex: 0 0 auto;
}

.brand:hover,
.brand:focus-visible {
  color: var(--ink);
}

.brand-mark {
  width: 26px;
  height: 26px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid #f5f2ec;
  border-radius: 2px;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.primary-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent);
  background: rgba(47, 93, 98, 0.07);
}

.nav-link.is-current {
  color: var(--accent);
  font-weight: 600;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  padding: 11px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
}

.site-main {
  display: block;
}

.home-main,
.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.inner-main {
  padding-top: 24px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--ink-soft);
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent);
}

.breadcrumb-sep {
  color: var(--line);
}

.breadcrumb-current {
  color: var(--ink);
}

.page-header {
  margin-bottom: 12px;
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
  max-width: var(--read);
}

.page-title-section {
  max-width: var(--read);
  margin-bottom: 32px;
}

.index-label,
.index-tag,
.page-index {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
}

.page-lede,
.page-lead {
  max-width: var(--read);
  margin-top: 10px;
  font-size: 16px;
  color: var(--ink-soft);
}

/* 页脚 */
.site-footer {
  margin-top: 40px;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 8px;
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 32px 28px;
}

.footer-brand-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: var(--ink-soft);
  min-height: 22px;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent);
}

.footer-bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-copy {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--accent);
  flex: 0 0 auto;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  border-color: var(--accent);
  background: var(--accent);
  color: #f5f2ec;
}

.back-to-top-icon {
  position: relative;
  width: 12px;
  height: 12px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg) translate(2px, 2px);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 60;
  padding: 10px 16px;
  background: var(--accent);
  color: #f5f2ec;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 14px;
}

.skip-link:focus {
  top: 12px;
  color: #f5f2ec;
}

/* --------------------------------------------------------------------------
   components · 通用组件：区块头、标记、按钮、入口卡
   -------------------------------------------------------------------------- */
.section-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}

.section-lead,
.section-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--read);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.section-head > div {
  min-width: 0;
}

.section-more {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--accent);
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.section-more:hover,
.section-more:focus-visible {
  border-color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #f5f2ec;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-deep);
  color: #f5f2ec;
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: var(--card);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

/* 变更类型标记 */
.type-add,
.type-edit,
.type-fill,
.type-tag,
.change-tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 2px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  white-space: nowrap;
}

.type-add,
.change-tag-add {
  color: var(--mark);
  border-color: rgba(168, 69, 47, 0.4);
  background: rgba(168, 69, 47, 0.06);
}

.type-edit,
.change-tag-fix {
  color: var(--accent);
  border-color: rgba(47, 93, 98, 0.35);
  background: rgba(47, 93, 98, 0.06);
}

.type-fill,
.change-tag-fill {
  color: var(--ink);
  border-color: var(--line);
  background: #f0ece3;
}

.type-tag,
.change-tag-tag {
  color: var(--ink-soft);
  border-color: var(--line);
  background: transparent;
}

/* 批次标记 */
.batch-tag,
.batch-mark,
.digest-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  background: rgba(47, 93, 98, 0.08);
  border-radius: 2px;
  padding: 2px 8px;
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */
.hero-card-flow {
  margin-bottom: 48px;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: stretch;
}

.hero-main-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-media {
  position: relative;
  min-height: 300px;
  background: #eceae4;
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
}

.hero-body {
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-body h1 {
  font-size: 30px;
  line-height: 1.35;
}

.hero-lead {
  font-size: 15px;
  color: var(--ink-soft);
}

.hero-actions {
  margin-top: auto;
  padding-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-side-cards {
  display: grid;
  grid-template-rows: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.index-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.index-card:hover,
.index-card:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
}

.index-card-title {
  font-size: 17px;
  font-weight: 600;
}

.index-card-text {
  font-size: 14px;
  color: var(--ink-soft);
}

.index-card-more {
  margin-top: auto;
  padding-top: 6px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

/* 题材速览条 */
.topic-strip {
  margin-bottom: 48px;
}

.topic-strip .section-lead {
  margin-bottom: 18px;
}

.topic-strip-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.topic-strip-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  min-height: 44px;
}

.topic-strip-item a:hover,
.topic-strip-item a:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
}

.topic-name {
  font-size: 16px;
  font-weight: 600;
}

.topic-note {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* 题材索引分组 */
.topic-index {
  margin-bottom: 48px;
}

.topic-index .section-lead {
  margin-bottom: 20px;
}

.topic-index-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.topic-index .topic-group {
  display: grid;
  grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.topic-index .topic-group-head {
  min-width: 0;
}

.topic-group-name {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.topic-group-desc {
  font-size: 14px;
  color: var(--ink-soft);
}

.topic-group-items {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 20px;
}

.topic-group-items li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.topic-group-items a {
  font-size: 15px;
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 2px;
}

.topic-group-items a:hover,
.topic-group-items a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.item-meta {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* 最近更新 */
.recent-batch-updates {
  margin-bottom: 48px;
}

.batch-list {
  border-top: 1px solid var(--line);
}

.batch-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1.6fr) 76px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.batch-name {
  font-size: 15px;
  color: var(--ink);
  min-width: 0;
}

.batch-topic {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

.batch-link {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--accent);
  white-space: nowrap;
}

/* 封面墙 */
.cover-wall {
  margin-bottom: 48px;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.cover-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.cover-media {
  position: relative;
  aspect-ratio: 3 / 4;
  background: #eceae4;
}

.cover-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cover-name {
  font-size: 16px;
  font-weight: 600;
}

.cover-topic,
.cover-batch {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

.cover-batch {
  color: var(--mark);
}

/* 编辑推荐摘要 */
.picks-digest {
  margin-bottom: 48px;
}

.picks-list {
  display: grid;
  gap: 16px;
}

.pick-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  padding: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.pick-thumb {
  width: 96px;
  aspect-ratio: 3 / 4;
  background: #eceae4;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.pick-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pick-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pick-name {
  font-size: 17px;
  font-weight: 600;
}

.pick-name a {
  color: var(--ink);
}

.pick-name a:hover,
.pick-name a:focus-visible {
  color: var(--accent);
}

.pick-reason {
  font-size: 15px;
  color: var(--ink-soft);
}

.pick-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
}

/* 更新记录摘要 */
.changelog-digest {
  margin-bottom: 48px;
}

.digest-list {
  border-top: 1px solid var(--line);
}

.digest-row {
  display: grid;
  grid-template-columns: 88px 76px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.digest-topic {
  font-size: 15px;
  color: var(--ink);
}

.digest-link {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--accent);
  white-space: nowrap;
}

/* 阅读与说明入口 */
.reading-entry {
  margin-bottom: 8px;
}

.reading-entry .section-lead {
  margin-bottom: 20px;
}

.entry-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.entry-card:hover,
.entry-card:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
}

.entry-card-title {
  font-size: 18px;
  font-weight: 600;
}

.entry-card-text {
  font-size: 14px;
  color: var(--ink-soft);
}

.entry-card-more {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 内页通用布局与题材标签页
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

.main-column,
.page-content,
.content-main {
  min-width: 0;
}

.topic-groups {
  margin-bottom: 40px;
}

.topic-groups .section-desc {
  margin-bottom: 20px;
}

.topic-groups .topic-group {
  display: block;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.topic-groups .topic-group-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 20px;
  align-items: baseline;
  margin-bottom: 14px;
}

.topic-groups .topic-group-name {
  font-size: 18px;
}

.topic-groups .topic-group-desc {
  grid-column: 1 / 2;
}

.topic-groups .topic-group-meta {
  grid-column: 2 / 3;
  grid-row: 1 / 2;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mark);
  white-space: nowrap;
}

.topic-group-body {
  min-width: 0;
}

.topic-entry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.topic-entry {
  min-width: 0;
}

.topic-entry-figure {
  aspect-ratio: 3 / 4;
  background: #eceae4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 10px;
}

.topic-entry-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.topic-entry-link {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 4px;
}

.topic-entry-link:hover,
.topic-entry-link:focus-visible {
  color: var(--accent);
}

.topic-entry-note {
  font-size: 13px;
  color: var(--ink-soft);
}

.scene-picker {
  margin-bottom: 24px;
}

.scene-picker .section-desc {
  margin-bottom: 18px;
}

.scene-list {
  border-top: 1px solid var(--line);
}

.scene-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.scene-name {
  font-size: 15px;
  font-weight: 600;
}

.scene-tags {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--accent);
}

.scene-note {
  font-size: 14px;
  color: var(--ink-soft);
}

.aside-topic-index {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.aside-tag-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aside-tag-list a {
  display: block;
  padding: 8px 0;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
}

.aside-tag-list a:hover,
.aside-tag-list a:focus-visible {
  color: var(--accent);
}

.aside-tips {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.aside-tips-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

.aside-tips-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-tips-list li {
  font-size: 13px;
  color: var(--ink-soft);
  padding-left: 14px;
  position: relative;
}

.aside-tips-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

/* --------------------------------------------------------------------------
   pages · 编辑推荐页
   -------------------------------------------------------------------------- */
.featured-pick {
  margin-bottom: 44px;
}

.featured-pick .section-desc {
  margin-bottom: 20px;
}

.pick-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.pick-card-main {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 26px;
  padding: 24px;
}

.pick-cover {
  aspect-ratio: 3 / 4;
  background: #eceae4;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.pick-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pick-cover-caption {
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
}

.pick-card-main .pick-body {
  gap: 10px;
}

.pick-card-main .pick-name {
  font-size: 22px;
}

.pick-meta-item {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 2px 8px;
}

.pick-audience {
  font-size: 14px;
  color: var(--ink-soft);
}

.link-more {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--accent);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.link-more:hover,
.link-more:focus-visible {
  border-color: var(--accent);
}

.genre-picks {
  margin-bottom: 40px;
}

.genre-picks .section-desc {
  margin-bottom: 8px;
}

.genre-group {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.genre-group-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.pick-card-compact {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 16px;
  padding: 14px;
  margin-bottom: 14px;
}

.pick-card-compact:last-child {
  margin-bottom: 0;
}

.pick-card-compact .pick-thumb {
  width: 88px;
}

.pick-card-compact .pick-name {
  font-size: 16px;
}

.pick-card-compact .pick-reason {
  font-size: 14px;
}

.pick-criteria {
  margin-bottom: 40px;
}

.pick-criteria .section-desc {
  margin-bottom: 20px;
}

.criteria-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.criteria-item {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 2px solid var(--accent);
  min-width: 0;
}

.criteria-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.criteria-desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.criteria-apply {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--mark);
  letter-spacing: 0.02em;
}

.criteria-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.inline-link {
  border-bottom: 1px solid var(--line);
}

.inline-link:hover,
.inline-link:focus-visible {
  border-color: var(--accent);
}

.more-entry {
  margin-bottom: 16px;
}

.more-entry .section-title {
  margin-bottom: 16px;
}

.entry-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.entry-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  min-height: 44px;
}

.entry-link:hover,
.entry-link:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
}

.entry-name {
  font-size: 16px;
  font-weight: 600;
}

.entry-desc {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 更新记录页
   -------------------------------------------------------------------------- */
.current-batch,
.change-types,
.history-batches,
.batch-note {
  margin-bottom: 40px;
}

.current-batch .section-head,
.change-types .section-head,
.history-batches .section-head,
.batch-note .section-head,
.more-entry .section-head {
  display: block;
  margin-bottom: 18px;
}

.batch-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.batch-entry {
  font-size: 15px;
  color: var(--ink);
}

.batch-entry a {
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
}

.batch-entry a:hover,
.batch-entry a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.batch-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
}

.current-batch .batch-row {
  grid-template-columns: 88px minmax(0, 1fr);
  align-items: start;
}

.change-type-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.change-type-card {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
}

.change-type-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.change-type-mean {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.change-type-scene {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--mark);
}

.batch-group {
  border-bottom: 1px solid var(--line);
}

.batch-group-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  min-height: 44px;
}

.batch-group-summary::-webkit-details-marker {
  display: none;
}

.batch-group-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent);
}

.batch-group[open] .batch-group-summary::after {
  content: "−";
}

.batch-group-title {
  font-size: 16px;
  font-weight: 600;
}

.batch-group-list {
  padding: 0 0 16px 102px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.batch-group-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

.batch-note-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.batch-note-item {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
}

.batch-note-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.batch-note-desc {
  font-size: 14px;
  color: var(--ink-soft);
}

.batch-figure {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.batch-figure img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.batch-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
}

.entry-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.entry-links .entry-link {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   pages · 阅读指南页
   -------------------------------------------------------------------------- */
.content-block {
  margin-bottom: 40px;
}

.content-block h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.block-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 18px;
  max-width: var(--read);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  counter-reset: step;
}

.step-item {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
  counter-increment: step;
}

.step-item::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 8px;
}

.step-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.step-item p {
  font-size: 14px;
  color: var(--ink-soft);
}

.content-figure {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 20px;
}

.content-figure img {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.content-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
}

.tool-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.tool-item {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  min-width: 0;
}

.tool-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.tool-desc {
  font-size: 14px;
  color: var(--ink-soft);
}

.spec-table {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.spec-caption {
  padding: 14px 18px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.spec-table th,
.spec-table td {
  padding: 12px 18px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.spec-table thead th {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: #f0ece3;
}

.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td {
  border-bottom: 0;
}

.spec-table td {
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.path-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  counter-reset: path;
}

.path-item {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  counter-increment: path;
}

.path-title {
  font-size: 16px;
  font-weight: 600;
  padding-left: 34px;
  position: relative;
}

.path-title::before {
  content: counter(path, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.path-item p {
  font-size: 15px;
  color: var(--ink-soft);
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.faq-question {
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent);
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 18px 16px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--ink-soft);
}

.page-aside {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-nav-list {
  display: flex;
  flex-direction: column;
}

.aside-nav-list a {
  display: block;
  padding: 9px 0;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
}

.aside-nav-list a:hover,
.aside-nav-list a:focus-visible {
  color: var(--accent);
}

.aside-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.aside-note-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

.aside-link-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-link-list a {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

.aside-link-list a:hover,
.aside-link-list a:focus-visible {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 版权与说明页
   -------------------------------------------------------------------------- */
.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

.content-section {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.content-section:last-child {
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0;
}

.content-section h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.section-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 18px;
  max-width: var(--read);
}

.scope-list,
.quote-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.scope-item,
.quote-item {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
}

.scope-item h3,
.quote-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.scope-item p,
.quote-item p {
  font-size: 14px;
  color: var(--ink-soft);
}

.section-media {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 20px;
}

.section-media img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.section-media figcaption {
  margin-top: 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-soft);
}

.correction-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  counter-reset: fix;
}

.correction-step {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
  counter-increment: fix;
}

.correction-step::before {
  content: counter(fix, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mark);
  margin-bottom: 8px;
}

.correction-step h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.correction-step p {
  font-size: 14px;
  color: var(--ink-soft);
}

.feedback-note {
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  margin-bottom: 14px;
}

.feedback-note:last-child {
  margin-bottom: 0;
}

.feedback-note h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.feedback-note p {
  font-size: 14px;
  color: var(--ink-soft);
}

.more-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.more-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  min-height: 44px;
}

.more-link:hover,
.more-link:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
}

.more-link-title {
  font-size: 16px;
  font-weight: 600;
}

.more-link-desc {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px 24px 56px;
}

.error-panel {
  max-width: var(--read);
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 32px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mark);
  margin-bottom: 10px;
}

.error-title {
  font-size: 30px;
  margin-bottom: 12px;
}

.error-text {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 22px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-home-link,
.error-sub-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.error-home-link {
  background: var(--accent);
  color: #f5f2ec;
}

.error-home-link:hover,
.error-home-link:focus-visible {
  background: var(--accent-deep);
  color: #f5f2ec;
}

.error-sub-link {
  border: 1px solid var(--line);
  color: var(--ink);
  background: var(--card);
}

.error-sub-link:hover,
.error-sub-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.error-suggest {
  max-width: var(--read);
}

.error-suggest-title {
  font-size: 20px;
  margin-bottom: 14px;
}

.error-suggest-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.error-suggest-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.error-suggest-item a {
  font-size: 15px;
  border-bottom: 1px solid var(--line-soft);
}

.error-suggest-item a:hover,
.error-suggest-item a:focus-visible {
  border-color: var(--accent);
}

.error-suggest-desc {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   responsive · 1024 / 768 / 480
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-side-cards {
    grid-template-rows: none;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .topic-strip-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-layout,
  .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .aside-topic-index,
  .page-aside {
    position: static;
    top: auto;
  }

  .change-type-grid,
  .correction-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0 18px;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    margin-left: 0;
    padding: 0 18px 16px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding-top: 8px;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-link {
    min-height: 48px;
    padding: 0 12px;
    font-size: 15px;
    justify-content: flex-start;
  }

  .nav-link.is-current {
    box-shadow: inset 3px 0 0 var(--accent);
    background: rgba(47, 93, 98, 0.07);
  }

  .home-main,
  .inner-main {
    padding: 24px 18px 44px;
  }

  .page-title {
    font-size: 24px;
  }

  .hero-main-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-media,
  .hero-media img {
    min-height: 220px;
  }

  .hero-body {
    padding: 22px 20px;
  }

  .hero-body h1 {
    font-size: 24px;
  }

  .hero-side-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-index .topic-group {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .topic-group-items {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-groups .topic-group-head {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-groups .topic-group-meta {
    grid-column: 1 / 2;
    grid-row: auto;
  }

  .batch-row {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 8px 14px;
    align-items: baseline;
  }

  .batch-topic,
  .batch-link {
    grid-column: 2 / 3;
  }

  .cover-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .pick-row {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 14px;
    padding: 14px;
  }

  .pick-thumb {
    width: 76px;
  }

  .digest-row {
    grid-template-columns: 84px 72px minmax(0, 1fr);
    gap: 8px 12px;
    align-items: baseline;
  }

  .digest-link {
    grid-column: 3 / 4;
  }

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

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .topic-entry-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scene-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .pick-card-main {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding: 18px;
  }

  .pick-cover {
    max-width: 240px;
  }

  .criteria-list,
  .entry-list,
  .batch-note-list,
  .scope-list,
  .quote-list,
  .step-list,
  .tool-list,
  .more-links,
  .entry-links {
    grid-template-columns: minmax(0, 1fr);
  }

  .batch-group-list {
    padding-left: 0;
  }

  .path-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 32px 18px 8px;
  }

  .footer-bottom {
    padding: 14px 18px 24px;
  }

  .footer-brand-desc {
    max-width: none;
  }

  .error-main {
    padding: 32px 18px 44px;
  }

  .error-panel {
    padding: 24px 20px;
  }

  .error-title {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .header-inner,
  .home-main,
  .inner-main,
  .error-main {
    padding-left: 14px;
    padding-right: 14px;
  }

  .topic-strip-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .change-type-grid,
  .correction-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .spec-table th,
  .spec-table td {
    padding: 10px 12px;
    font-size: 13px;
  }
}

/* 动效增强：滚动出现仅做透明度与位移过渡，不改变初始可见性 */
.reveal {
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    transition: none;
  }

  * {
    transition-duration: 0.01ms !important;
  }
}