:root {
  --paper: #f7f4ee;
  --ink: #14181f;
  --line: #d9d2c6;
  --indigo: #2b4570;
  --clay: #9a4a2e;
  --muted: #5c6472;
  --paper-soft: #fdfbf6;
  --radius: 6px;
  --shell: 1120px;
  --serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", Georgia, serif;
  --sans: system-ui, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

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

a {
  color: var(--indigo);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 12px;
  line-height: 1.35;
}

h1 {
  font-size: 34px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin: 0 0 14px;
}

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

figure {
  margin: 0;
}

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

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

/* ============ LAYOUT ============ */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 1 auto;
  padding-bottom: 56px;
}

.inner-main {
  padding-top: 4px;
}

.home-main {
  padding-bottom: 0;
}

/* ============ HEADER ============ */

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 30;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
}

.brand {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  flex: 0 0 auto;
}

.brand:hover {
  text-decoration: none;
  color: var(--indigo);
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  align-items: center;
}

.nav-list a {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  color: var(--ink);
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--indigo);
  text-decoration: none;
  border-bottom-color: var(--line);
}

.nav-list a.is-current {
  color: var(--indigo);
  border-bottom-color: var(--indigo);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
}

.mobile-nav {
  border-top: 1px solid var(--line);
  background: var(--paper-soft);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav-list {
  padding: 8px 24px 16px;
}

.mobile-nav-list li {
  border-bottom: 1px solid var(--line);
}

.mobile-nav-list a {
  display: block;
  padding: 14px 0;
  min-height: 44px;
  color: var(--ink);
  font-size: 16px;
}

.mobile-nav-list a.is-current {
  color: var(--indigo);
  font-weight: 600;
}

/* ============ BREADCRUMB & PAGE HEADER ============ */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  padding: 20px 0 4px;
}

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

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

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

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

.page-header {
  padding: 8px 0 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.page-title {
  font-size: 34px;
  line-height: 1.3;
  margin: 0;
}

.page-title-section {
  padding: 0 0 8px;
}

.page-lead,
.page-lede {
  font-size: 17px;
  color: var(--muted);
  max-width: 720px;
  margin: 16px 0 0;
}

.page-hint {
  font-size: 14px;
  color: var(--muted);
  max-width: 720px;
  margin: 6px 0 0;
}

.page-hero {
  padding: 4px 0 8px;
}

.page-hero-inner {
  max-width: 720px;
}

.page-hero-lead {
  font-size: 17px;
  color: var(--ink);
  margin: 8px 0;
}

.page-hero-note {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.page-head {
  padding-top: 24px;
}

.page-note {
  font-size: 14px;
  color: var(--muted);
  max-width: 720px;
}

/* ============ SECTIONS ============ */

.section {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: none;
}

.section-head {
  margin-bottom: 28px;
}

.section-sub {
  font-size: 15px;
  color: var(--muted);
  max-width: 720px;
  margin: 0;
}

.section-title {
  font-size: 24px;
  margin: 0 0 12px;
}

.section-intro {
  font-size: 15px;
  color: var(--muted);
  max-width: 720px;
  margin: 0 0 24px;
}

.section-lead {
  font-size: 15px;
  color: var(--muted);
  max-width: 720px;
  margin: 0 0 20px;
}

.section-more {
  font-size: 15px;
  margin: 24px 0 0;
}

.section-more a {
  color: var(--indigo);
  margin-right: 18px;
}

.section-more a::after {
  content: " →";
  color: var(--muted);
}

/* ============ BUTTONS ============ */

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--clay);
  color: #fdfbf6;
  border-color: var(--clay);
}

.btn-primary:hover {
  background: #7f3b23;
  border-color: #7f3b23;
}

.btn-ghost {
  background: transparent;
  color: var(--indigo);
  border-color: var(--indigo);
}

.btn-ghost:hover {
  background: var(--indigo);
  color: #fdfbf6;
}

/* ============ HOME HERO ============ */

.hero-section {
  padding-top: 48px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  padding-bottom: 40px;
}

.hero-text {
  min-width: 0;
}

.hero-eyebrow {
  font-size: 13px;
  color: var(--clay);
  letter-spacing: 1px;
  margin: 0 0 12px;
}

.hero-text h1 {
  font-size: 34px;
  margin: 0 0 16px;
}

.hero-lead {
  font-size: 17px;
  color: var(--muted);
  margin: 0 0 24px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-figure {
  min-width: 0;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.hero-figure figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
}

/* ============ STATUS COMPARE ============ */

.status-compare {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  padding: 40px 24px 48px;
}

.status-column {
  min-width: 0;
  padding-top: 20px;
  border-top: 2px solid var(--indigo);
}

.status-title {
  font-size: 18px;
  margin: 0 0 10px;
}

.status-note {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 14px;
}

.status-fields li {
  font-size: 14px;
  color: var(--ink);
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.status-fields li:last-child {
  border-bottom: none;
}

/* ============ TOPIC OVERVIEW ============ */

.topic-overview {
  padding-top: 56px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.topic-card {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  transition: border-color 0.2s ease;
}

.topic-card:hover {
  border-color: var(--indigo);
}

.topic-name {
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--indigo);
}

.topic-scope {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 14px;
}

.topic-links li {
  font-size: 14px;
  padding: 4px 0;
}

.topic-links a {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.topic-links a:hover {
  color: var(--indigo);
  border-bottom-color: var(--indigo);
  text-decoration: none;
}

/* ============ COVER WALL ============ */

.cover-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.cover-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-soft);
  transition: border-color 0.2s ease;
}

.cover-card:hover {
  border-color: var(--indigo);
}

.cover-figure {
  margin: 0;
}

.cover-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.cover-title {
  font-size: 17px;
  margin: 16px 16px 6px;
}

.cover-tag {
  font-size: 13px;
  color: var(--indigo);
  margin: 0 16px 4px;
}

.cover-status {
  font-size: 13px;
  color: var(--clay);
  margin: 0 16px 4px;
  font-weight: 600;
}

.cover-note {
  font-size: 13px;
  color: var(--muted);
  margin: 0 16px 18px;
}

/* ============ UPDATE PREVIEW ============ */

.update-groups {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.update-group {
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.update-date {
  font-size: 17px;
  color: var(--clay);
  margin: 0 0 12px;
}

.update-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) 130px minmax(0, 1.4fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  font-size: 14px;
}

.update-row:last-child {
  border-bottom: none;
}

.update-time {
  color: var(--muted);
  font-size: 13px;
}

.update-name {
  font-weight: 600;
  color: var(--ink);
}

.update-chapter {
  color: var(--indigo);
  font-size: 13px;
}

.update-change {
  color: var(--muted);
  font-size: 13px;
}

/* ============ PICK ENTRY ============ */

.pick-entry {
  padding-top: 56px;
}

.pick-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.pick-table-wrap {
  min-width: 0;
}

.pick-table-wrap h2 {
  margin-bottom: 20px;
}

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

.compare-table caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--muted);
  padding: 8px 12px;
}

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

.compare-table thead th {
  background: var(--paper);
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.compare-table tbody th {
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
  width: 34%;
}

.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
  border-bottom: none;
}

.pick-text {
  min-width: 0;
}

.pick-text h2 {
  margin-bottom: 16px;
}

.pick-text p {
  font-size: 15px;
  color: var(--muted);
}

/* ============ EDITOR PICKS ============ */

.pick-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pick-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.pick-item:last-child {
  border-bottom: none;
}

.pick-order {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  line-height: 34px;
  text-align: center;
  border-radius: 50%;
  border: 1px solid var(--clay);
  color: var(--clay);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
}

.pick-body {
  min-width: 0;
  flex: 1 1 auto;
}

.pick-name {
  font-size: 17px;
  margin: 0 0 6px;
}

.pick-reason {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

/* ============ BASICS PATHS ============ */

.path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.path-card {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  transition: border-color 0.2s ease;
  display: block;
  color: inherit;
}

.path-card:hover {
  border-color: var(--indigo);
  text-decoration: none;
}

.path-title {
  font-size: 17px;
  margin: 0 0 10px;
  color: var(--indigo);
}

.path-desc,
.path-note {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 10px;
}

.path-link {
  font-size: 14px;
  margin: 0;
}

/* ============ RELATED LINKS (HOME) ============ */

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.related-links-label {
  color: var(--muted);
  font-size: 13px;
}

.related-links-item {
  color: var(--indigo);
}

/* ============ TOPIC MAP PAGE ============ */

.topic-basis .basis-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.basis-item {
  min-width: 0;
  padding-top: 16px;
  border-top: 2px solid var(--indigo);
}

.basis-item h3 {
  font-size: 17px;
  margin: 0 0 8px;
}

.basis-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.topic-blocks .section-intro {
  margin-bottom: 32px;
}

.topic-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  gap: 40px;
  align-items: start;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.topic-block:first-of-type {
  border-top: none;
  padding-top: 0;
}

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

.topic-text h3 {
  font-size: 20px;
  margin: 0 0 12px;
  color: var(--indigo);
}

.topic-text p {
  font-size: 15px;
  color: var(--ink);
  margin: 0 0 12px;
}

.topic-confuse {
  color: var(--muted);
  font-size: 14px;
  padding: 10px 14px;
  border-left: 3px solid var(--clay);
  background: var(--paper-soft);
}

.topic-picks {
  font-size: 14px;
  margin: 0;
}

.topic-picks a {
  color: var(--indigo);
}

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

.topic-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.topic-figure figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.data-table caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--muted);
  padding: 10px 14px;
}

.data-table thead th {
  background: var(--paper);
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.data-table tbody th {
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ============ SERIAL CATALOG PAGE ============ */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
  padding-top: 8px;
}

.content-main {
  min-width: 0;
}

.content-sidebar,
.sidebar {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  position: sticky;
  top: 88px;
}

.sidebar-title {
  font-size: 16px;
  margin: 0 0 12px;
  color: var(--indigo);
}

.sidebar-text {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 12px;
}

.sidebar-links li {
  font-size: 14px;
  padding: 6px 0;
  border-top: 1px solid var(--line);
}

.sidebar-links li:first-child {
  border-top: none;
}

.fields-section {
  padding-top: 8px;
}

.field-defs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 28px;
  margin: 0;
}

.field-def {
  min-width: 0;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.field-def dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--indigo);
  margin-bottom: 4px;
}

.field-def dd {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.group-section {
  padding-top: 32px;
}

.catalog-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.catalog-item {
  min-width: 0;
}

.catalog-entry {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 20px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  align-items: start;
}

.catalog-cover {
  min-width: 0;
}

.catalog-cover img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 4px;
}

.catalog-body {
  min-width: 0;
}

.catalog-name {
  font-size: 17px;
  margin: 0 0 8px;
}

.catalog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
}

.catalog-status {
  font-size: 13px;
  color: var(--clay);
  font-weight: 600;
  margin: 0 0 4px;
}

.catalog-progress {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 4px;
}

.catalog-latest {
  font-size: 13px;
  color: var(--indigo);
  margin: 0;
}

/* ============ UPDATE RADAR PAGE ============ */

.content-media-inline {
  margin-top: 20px;
}

.content-media img {
  width: 100%;
  max-width: 720px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.content-media figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
  max-width: 720px;
}

.radar-summary {
  padding: 32px 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 28px;
}

.summary-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 20px;
}

.summary-item {
  min-width: 0;
  padding-top: 14px;
  border-top: 2px solid var(--indigo);
}

.summary-item-title {
  font-size: 16px;
  margin: 0 0 8px;
}

.summary-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.summary-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.entry-link {
  font-size: 15px;
  color: var(--indigo);
}

.entry-link::after {
  content: " →";
  color: var(--muted);
}

.radar-log {
  padding-top: 8px;
}

.log-group {
  margin-bottom: 32px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.log-date {
  font-size: 17px;
  color: var(--clay);
  margin: 0 0 12px;
}

.log-row {
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr) 120px minmax(0, 1.3fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  font-size: 14px;
}

.log-row:last-child {
  border-bottom: none;
}

.log-time {
  color: var(--muted);
  font-size: 13px;
}

.log-title {
  font-weight: 600;
  color: var(--ink);
}

.log-chapter {
  color: var(--indigo);
  font-size: 13px;
}

.log-change {
  color: var(--muted);
  font-size: 13px;
}

.radar-check {
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.check-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.check-step {
  min-width: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.check-step-title {
  font-size: 16px;
  margin: 0 0 8px;
}

.check-step p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.sidebar-block {
  margin-bottom: 24px;
}

.sidebar-block:last-child {
  margin-bottom: 0;
}

.sidebar-intro {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 12px;
}

.field-list dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--indigo);
  margin-top: 12px;
}

.field-list dt:first-of-type {
  margin-top: 0;
}

.field-list dd {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}

/* ============ PICK COMPARE PAGE ============ */

.section-block {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.section-block:last-of-type {
  border-bottom: none;
}

.question-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.question-item {
  min-width: 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.question-title {
  font-size: 17px;
  margin: 0 0 8px;
  color: var(--indigo);
}

.question-note {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.compare-figure {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 28px;
}

.compare-media {
  min-width: 0;
}

.compare-media img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.compare-caption {
  grid-column: 1 / -1;
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.compare-table-caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--muted);
  padding: 10px 14px;
}

.reading-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.reading-col {
  min-width: 0;
  padding-top: 16px;
  border-top: 2px solid var(--indigo);
}

.reading-col h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.reading-col p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

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

.step-item {
  min-width: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.step-title {
  font-size: 16px;
  margin: 0 0 8px;
}

.step-note {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.path-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.path-list .path-card {
  padding: 22px;
}

/* ============ READING BASICS PAGE ============ */

.path-section .path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.path-step {
  min-width: 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
}

.path-step h3 {
  font-size: 17px;
  margin: 0 0 8px;
  color: var(--indigo);
}

.path-step p {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 8px;
}

.path-step .path-link {
  margin: 0;
}

.media-figure {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.media-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.media-figure figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
}

.glossary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 32px;
  margin: 0;
}

.glossary-item {
  min-width: 0;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.glossary-item dt {
  font-size: 16px;
  font-weight: 600;
  color: var(--indigo);
  margin-bottom: 6px;
}

.glossary-item dd {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.advice-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.advice-item {
  min-width: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.advice-item h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.advice-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  padding: 0 20px;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 12px;
}

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

.faq-item summary::before {
  content: "+";
  color: var(--clay);
  font-family: var(--serif);
  font-size: 20px;
  flex: 0 0 auto;
}

.faq-item[open] summary::before {
  content: "−";
}

.faq-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 18px;
  padding-left: 32px;
}

.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  font-size: 15px;
}

.related-list li {
  min-width: 0;
}

/* ============ SITE NOTES PAGE ============ */

.page-layout .page-main-col {
  min-width: 0;
}

.content-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.content-section:first-child {
  padding-top: 8px;
}

.content-section:last-child {
  border-bottom: none;
}

.content-section h3 {
  font-size: 17px;
  margin: 24px 0 12px;
}

.content-figure {
  margin: 20px 0;
}

.content-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.content-figure figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boundary-list li {
  font-size: 15px;
  color: var(--muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.75;
}

.boundary-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--line);
}

.boundary-list strong {
  color: var(--ink);
  font-weight: 600;
  margin-right: 6px;
}

.correction-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: step;
}

.correction-steps > li {
  min-width: 0;
  padding: 16px 20px 16px 56px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  position: relative;
  counter-increment: step;
}

.correction-steps > li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 16px;
  width: 26px;
  height: 26px;
  line-height: 26px;
  text-align: center;
  border-radius: 50%;
  background: var(--clay);
  color: #fdfbf6;
  font-size: 13px;
  font-family: var(--serif);
}

.correction-steps h3 {
  font-size: 16px;
  margin: 0 0 6px;
}

.correction-steps p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.principle-item {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.principle-item h3 {
  font-size: 16px;
  margin: 0 0 6px;
}

.principle-item p {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.page-side {
  min-width: 0;
}

.side-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  margin-bottom: 20px;
}

.side-block:last-child {
  margin-bottom: 0;
}

.side-title {
  font-size: 16px;
  margin: 0 0 10px;
  color: var(--indigo);
}

.side-text {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 12px;
}

.side-links li {
  font-size: 14px;
  padding: 6px 0;
  border-top: 1px solid var(--line);
}

.side-links li:first-child {
  border-top: none;
}

/* ============ 404 ============ */

.error-main {
  padding: 72px 0 80px;
}

.error-panel {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.error-code {
  font-family: var(--serif);
  font-size: 72px;
  line-height: 1;
  color: var(--line);
  margin: 0 0 16px;
}

.error-panel h1 {
  font-size: 30px;
  margin: 0 0 16px;
}

.error-text {
  font-size: 16px;
  color: var(--muted);
  margin: 0 0 28px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: center;
  margin-bottom: 24px;
}

.error-links a {
  font-size: 15px;
  padding: 8px 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.error-note {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

/* ============ FOOTER ============ */

.site-footer {
  background: var(--paper-soft);
  border-top: 1px solid var(--line);
  padding-top: 48px;
  margin-top: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding-bottom: 40px;
}

.footer-brand {
  min-width: 0;
}

.footer-logo {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 12px;
}

.footer-intro {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  max-width: 320px;
}

.footer-col {
  min-width: 0;
}

.footer-title {
  font-size: 15px;
  font-family: var(--sans);
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 12px;
}

.footer-col ul li {
  padding: 5px 0;
}

.footer-col ul a {
  font-size: 14px;
  color: var(--muted);
}

.footer-col ul a:hover {
  color: var(--indigo);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 24px;
}

.footer-boundary,
.footer-copy {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 6px;
}

.footer-copy {
  margin-bottom: 0;
}

/* ============ RESPONSIVE ============ */

@media (max-width: 1080px) {
  .page-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .content-sidebar,
  .sidebar {
    position: static;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .topic-block {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 28px;
  }

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

@media (max-width: 720px) {
  h1,
  .page-title,
  .hero-text h1 {
    font-size: 26px;
  }

  h2,
  .section-title {
    font-size: 21px;
  }

  .shell {
    padding: 0 18px;
  }

  .header-inner {
    min-height: 60px;
    gap: 12px;
  }

  .nav-list {
    display: none;
  }

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: flex;
    justify-content: flex-end;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-bottom: 32px;
  }

  .hero-figure {
    order: 2;
  }

  .hero-lead {
    font-size: 16px;
  }

  .status-compare,
  .topic-grid,
  .basis-list,
  .summary-list,
  .check-steps,
  .reading-columns,
  .advice-list,
  .glossary-list,
  .field-defs,
  .path-section .path-list,
  .path-list,
  .step-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .cover-title {
    font-size: 15px;
    margin: 12px 12px 4px;
  }

  .cover-tag,
  .cover-status,
  .cover-note {
    margin-left: 12px;
    margin-right: 12px;
  }

  .pick-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .topic-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .topic-figure {
    order: -1;
  }

  .update-row,
  .log-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px 0;
  }

  .update-time,
  .log-time {
    font-size: 12px;
  }

  .update-name,
  .log-title {
    font-size: 15px;
  }

  .catalog-entry {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 14px;
    padding: 14px;
  }

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

  .compare-table {
    display: block;
    border: none;
  }

  .compare-table caption,
  .compare-table thead {
    display: none;
  }

  .compare-table tbody,
  .compare-table tr,
  .compare-table th,
  .compare-table td {
    display: block;
    width: 100%;
  }

  .compare-table tbody tr {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 14px;
    background: var(--paper-soft);
    overflow: hidden;
  }

  .compare-table tbody th {
    width: auto;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }

  .compare-table tbody td {
    border-bottom: 1px solid var(--line);
  }

  .compare-table tbody td:last-child {
    border-bottom: none;
  }

  .table-scroll {
    overflow-x: visible;
    border: none;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table caption,
  .data-table thead {
    display: none;
  }

  .data-table tbody tr {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 14px;
    background: var(--paper-soft);
    overflow: hidden;
  }

  .data-table tbody th {
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .data-table tbody td:last-child {
    border-bottom: none;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .error-code {
    font-size: 56px;
  }

  .faq-item p {
    padding-left: 0;
  }

  .media-figure img {
    aspect-ratio: 16 / 9;
  }
}

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