:root {
  --paper: #F5F2EC;
  --ink: #17233D;
  --ink-soft: #2C3A57;
  --accent: #E4572E;
  --teal: #2F8F83;
  --gray: #6B7280;
  --line: #DCD6CB;
  --card: #FFFFFF;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow: 0 1px 2px rgba(23, 35, 61, 0.06), 0 6px 18px rgba(23, 35, 61, 0.05);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, "Courier New", monospace;
  --wrap: 1200px;
  --wrap-narrow: 760px;
}

/* ============================================================
   base
   ============================================================ */

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

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

h1 {
  font-size: 40px;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 19px;
}

p {
  margin: 0;
}

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

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

a:hover {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

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

figure {
  margin: 0;
}

figcaption {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
}

time,
.rank-index,
.index-no,
.update-date,
.step-index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

strong {
  font-weight: 700;
  color: var(--ink);
}

/* ============================================================
   layout — shell
   ============================================================ */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--paper);
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 72px;
}

.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 72px;
}

/* ---- fact bar ---- */

.fact-bar {
  background-color: var(--ink);
  color: #E8ECF4;
}

.fact-bar p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 9px 24px;
  font-size: 13.5px;
  line-height: 1.6;
}

/* ---- header ---- */

.site-header {
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

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

.brand-mark {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 7px 6px;
  border-radius: 1px;
  background-color: var(--paper);
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--ink);
}

.site-nav {
  display: block;
}

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

.nav-list li a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  border-bottom: 2px solid transparent;
}

.nav-list li a:hover {
  color: var(--accent);
  background-color: rgba(228, 87, 46, 0.06);
}

.nav-list li a.is-current {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--accent);
}

/* ---- breadcrumb ---- */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 14px;
  color: var(--gray);
}

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

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

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

.breadcrumb-current {
  color: var(--ink);
  font-weight: 500;
}

/* ---- page header (inner) ---- */

.page-header {
  padding: 20px 0 36px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 44px;
}

.page-title {
  font-size: 40px;
  font-weight: 700;
  color: var(--ink);
}

.page-description {
  margin-top: 14px;
  max-width: 680px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ============================================================
   components — shared
   ============================================================ */

.section-head {
  margin-bottom: 26px;
}

.section-head h2 {
  font-size: 26px;
  font-weight: 700;
}

.section-head p {
  margin-top: 8px;
  max-width: 720px;
  font-size: 15px;
  color: var(--gray);
}

.section-head p a {
  color: var(--accent);
  font-weight: 500;
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.section-head p a:hover {
  border-bottom-color: var(--accent);
}

.section-title {
  font-size: 26px;
  font-weight: 700;
}

.section-desc,
.section-intro,
.section-note {
  margin-top: 8px;
  max-width: 720px;
  font-size: 15px;
  color: var(--gray);
}

.section-intro a {
  color: var(--accent);
  font-weight: 500;
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.section-intro a:hover {
  border-bottom-color: var(--accent);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 12.5px;
  line-height: 1.6;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.tag-topic {
  background-color: rgba(47, 143, 131, 0.12);
  color: #226A61;
}

.tag-state {
  background-color: rgba(228, 87, 46, 0.12);
  color: #B33D18;
}

.tag-status {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 12.5px;
  line-height: 1.6;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  background-color: rgba(228, 87, 46, 0.12);
  color: #B33D18;
}

.link-strong {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--paper);
  background-color: var(--ink);
  border-radius: var(--radius-sm);
}

.link-strong:hover {
  color: #FFFFFF;
  background-color: var(--accent);
}

/* ---- cover card ---- */

.cover-card {
  display: flex;
  flex-direction: column;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.cover-card:hover {
  border-color: var(--ink);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.cover-figure {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background-color: #E7E2D8;
}

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

.cover-title {
  padding: 12px 14px 4px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
}

.cover-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 14px 14px;
}

/* ============================================================
   pages — index
   ============================================================ */

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 48px;
  padding: 40px 0 56px;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 13px;
  font-weight: 600;
  color: #226A61;
  background-color: rgba(47, 143, 131, 0.12);
  border-radius: var(--radius-sm);
}

.hero-copy .page-title {
  margin-top: 18px;
  font-size: 40px;
  line-height: 1.25;
}

.hero-lead {
  margin-top: 16px;
  max-width: 520px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.hero-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.hero-topics li a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.hero-topics li a:hover {
  color: #FFFFFF;
  background-color: var(--teal);
  border-color: var(--teal);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-visual {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.hero-figure {
  grid-column: 1 / -1;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #E7E2D8;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 10px 14px 12px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
}

.hero-covers {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

/* ---- home topics ---- */

.home-topics {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.topic-columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.topic-column {
  display: flex;
  flex-direction: column;
  padding: 22px 20px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
}

.topic-city {
  border-top-color: var(--accent);
}

.topic-mystery {
  border-top-color: var(--ink);
}

.topic-fantasy {
  border-top-color: var(--teal);
}

.topic-heal {
  border-top-color: #C9A227;
}

.topic-name {
  font-size: 19px;
  font-weight: 700;
}

.topic-feature {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.topic-scope {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--gray);
}

.topic-picks {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-picks li a {
  display: block;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid transparent;
}

.topic-picks li a:hover {
  color: var(--accent);
  border-bottom-color: rgba(228, 87, 46, 0.35);
}

/* ---- home wall ---- */

.home-wall {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.wall-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.cover-wide {
  grid-column: span 2;
}

.cover-tall .cover-figure {
  aspect-ratio: 2 / 3;
}

/* ---- home split ---- */

.home-split {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 48px;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.home-updates {
  min-width: 0;
}

.update-stream {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.update-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.update-row:hover {
  background-color: rgba(23, 35, 61, 0.035);
}

.update-date {
  font-size: 13.5px;
  color: var(--gray);
}

.update-name {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  min-width: 0;
  overflow-wrap: break-word;
}

.home-guide {
  min-width: 0;
  padding: 24px 22px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  align-self: start;
}

.home-guide h2 {
  font-size: 22px;
  font-weight: 700;
}

.home-guide > p {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.home-guide > p a {
  color: var(--accent);
  font-weight: 500;
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.home-guide > p a:hover {
  border-bottom-color: var(--accent);
}

.guide-points {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.guide-points li {
  padding-left: 14px;
  border-left: 2px solid var(--teal);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.guide-points li strong {
  display: block;
  font-size: 14.5px;
  color: var(--ink);
}

/* ---- home ranking & picks ---- */

.home-ranking,
.home-picks {
  min-width: 0;
}

.rank-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.rank-row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 11px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.rank-row:hover {
  background-color: rgba(23, 35, 61, 0.035);
}

.rank-no {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
}

.rank-name {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  min-width: 0;
  overflow-wrap: break-word;
}

.pick-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pick-card {
  padding: 18px 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
}

.pick-name {
  font-size: 17px;
  font-weight: 700;
}

.pick-scope {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--teal);
  font-weight: 600;
}

.pick-reason {
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---- home index ---- */

.home-index {
  padding: 56px 0 0;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.index-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 128px;
  padding: 18px 16px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.index-cell:hover {
  border-color: var(--ink);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.index-no {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.index-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.index-desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--gray);
}

/* ============================================================
   pages — topics
   ============================================================ */

.topic-groups {
  margin-bottom: 64px;
}

.topic-groups > .section-title {
  margin-bottom: 4px;
}

.topic-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  grid-template-areas:
    "head figure"
    "list figure"
    "more figure";
  gap: 8px 40px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

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

.topic-group-head {
  grid-area: head;
}

.topic-group-name {
  font-size: 22px;
  font-weight: 700;
}

.topic-group-feature {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.topic-group-scope {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.topic-group-figure {
  grid-area: figure;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #E7E2D8;
  align-self: start;
}

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

.topic-group-figure figcaption {
  padding: 10px 14px 12px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: none;
}

.topic-entry-list {
  grid-area: list;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
  margin-top: 14px;
}

.topic-entry {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.18s ease;
}

.topic-entry:hover {
  border-color: var(--teal);
}

.entry-name {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.entry-tag {
  font-size: 12.5px;
  color: #226A61;
  background-color: rgba(47, 143, 131, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.entry-status {
  font-size: 12.5px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.entry-status-ongoing {
  color: #B33D18;
  background-color: rgba(228, 87, 46, 0.12);
}

.entry-status-paused {
  color: #6B7280;
  background-color: rgba(107, 114, 128, 0.14);
}

.entry-status-done {
  color: #226A61;
  background-color: rgba(47, 143, 131, 0.14);
}

.topic-group-more {
  grid-area: more;
  margin-top: 12px;
}

.topic-group-more a {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.topic-group-more a:hover {
  border-bottom-color: var(--accent);
}

/* ---- field table ---- */

.field-notes {
  margin-bottom: 8px;
}

.field-table {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--card);
}

.field-row {
  display: grid;
  grid-template-columns: minmax(140px, 0.8fr) minmax(0, 1.6fr) minmax(0, 1.6fr);
}

.field-row + .field-row {
  border-top: 1px solid var(--line);
}

.field-row-head {
  background-color: var(--ink);
}

.field-row-head .field-cell {
  color: #E8ECF4;
  font-weight: 600;
}

.field-cell {
  padding: 14px 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  min-width: 0;
}

.field-name {
  font-weight: 700;
  color: var(--ink);
}

.field-row-head .field-name {
  color: #E8ECF4;
}

.field-notes-more {
  margin-top: 16px;
  font-size: 14.5px;
}

.field-notes-more a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.field-notes-more a:hover {
  border-bottom-color: var(--accent);
}

/* ============================================================
   pages — updates
   ============================================================ */

.update-overview {
  margin-bottom: 56px;
}

.overview-figure {
  margin-top: 20px;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #E7E2D8;
}

.overview-figure img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.overview-figure figcaption {
  padding: 10px 16px 12px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: none;
}

.update-log {
  margin-bottom: 56px;
}

.log-group {
  margin-top: 28px;
}

.log-date {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  font-family: var(--font-mono);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink);
}

.log-list {
  display: flex;
  flex-direction: column;
}

.log-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.log-row:hover {
  background-color: rgba(23, 35, 61, 0.035);
}

.log-thumb {
  width: 84px;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #E7E2D8;
}

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

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

.log-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  overflow-wrap: break-word;
}

.log-meta {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--gray);
}

.log-state {
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  color: #B33D18;
  background-color: rgba(228, 87, 46, 0.12);
  white-space: nowrap;
}

.log-footnote {
  margin-top: 20px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.log-footnote a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.log-footnote a:hover {
  border-bottom-color: var(--accent);
}

.state-guide {
  margin-bottom: 8px;
}

.state-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.state-item {
  padding: 20px 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.state-item dt {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.state-item dd {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.state-note {
  margin-top: 20px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.state-note a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.state-note a:hover {
  border-bottom-color: var(--accent);
}

/* ============================================================
   pages — ranking
   ============================================================ */

.page-layout {
  display: grid;
  gap: 48px;
}

.ranking-layout {
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  margin-bottom: 64px;
}

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

.ranking-main > h2,
.ranking-side > h2 {
  font-size: 24px;
  font-weight: 700;
}

.ranking-main .rank-list {
  margin-top: 20px;
}

.rank-item {
  display: grid;
  grid-template-columns: 44px 72px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.rank-item:hover {
  background-color: rgba(23, 35, 61, 0.035);
}

.rank-index {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
}

.rank-thumb {
  width: 72px;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #E7E2D8;
}

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

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

.rank-body .rank-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  overflow-wrap: break-word;
}

.rank-meta {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--gray);
}

.rank-footnote {
  margin-top: 20px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.rank-footnote a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.rank-footnote a:hover {
  border-bottom-color: var(--accent);
}

.ranking-side {
  min-width: 0;
  align-self: start;
}

.pick-list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rank-method {
  margin-bottom: 8px;
}

.method-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.method-item {
  padding: 20px 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
}

.method-name {
  font-size: 16px;
  font-weight: 700;
}

.method-item p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.method-backlink {
  margin-top: 22px;
  font-size: 14.5px;
}

.method-backlink a {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid rgba(228, 87, 46, 0.35);
}

.method-backlink a:hover {
  border-bottom-color: var(--accent);
}

/* ============================================================
   pages — guide
   ============================================================ */

.guide-section {
  margin-bottom: 64px;
}

.guide-section:last-of-type {
  margin-bottom: 8px;
}

.field-figure {
  margin-top: 22px;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #E7E2D8;
}

.field-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.field-figure-caption {
  padding: 10px 16px 12px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-top: none;
}

.field-qa {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: var(--wrap-narrow);
}

.field-item {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.field-summary {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 18px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.field-summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 16px;
  font-size: 20px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
}

.field-item[open] .field-summary::after {
  content: "–";
}

.field-summary:hover {
  color: var(--accent);
}

.field-body {
  padding: 0 18px 16px;
  border-top: 1px solid var(--line);
}

.field-body p {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.boundary-layout {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.boundary-col {
  min-width: 0;
  padding: 24px 22px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.boundary-scope {
  border-top: 3px solid var(--ink);
}

.boundary-feedback {
  border-top: 3px solid var(--accent);
}

.subsection-title {
  font-size: 19px;
  font-weight: 700;
}

.boundary-text {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.boundary-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boundary-item {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--teal);
}

.feedback-steps {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feedback-step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.feedback-step .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--ink);
  border-radius: 50%;
}

.feedback-step .step-text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.boundary-note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

.next-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.next-card {
  display: flex;
  flex-direction: column;
  min-height: 148px;
  padding: 20px 18px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.next-card:hover {
  border-color: var(--ink);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.next-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.next-card-text {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

/* ============================================================
   pages — 404
   ============================================================ */

.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 72px 24px 88px;
}

.error-hero {
  max-width: 640px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
}

.error-hero h1 {
  margin-top: 12px;
  font-size: 40px;
  font-weight: 700;
}

.error-text {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.error-action {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 26px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  background-color: var(--ink);
  border-radius: var(--radius-sm);
}

.error-action:hover {
  color: #FFFFFF;
  background-color: var(--accent);
}

.error-paths {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.error-paths-title {
  font-size: 22px;
  font-weight: 700;
}

.error-path-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.error-path-list li a {
  display: flex;
  align-items: center;
  min-height: 56px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.error-path-list li a:hover {
  border-color: var(--ink);
  box-shadow: var(--shadow);
}

/* ============================================================
   layout — footer
   ============================================================ */

.site-footer {
  background-color: var(--ink);
  color: #C9D2E2;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px 24px 28px;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 36px;
}

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

.footer-name {
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-slogan {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--teal);
  font-weight: 600;
}

.footer-desc {
  margin-top: 12px;
  max-width: 360px;
  font-size: 14px;
  line-height: 1.75;
  color: #A9B4C8;
}

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

.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-col ul {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14.5px;
  color: #C9D2E2;
}

.footer-col ul li a:hover {
  color: #FFFFFF;
}

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px 32px;
  border-top: 1px solid rgba(201, 210, 226, 0.18);
  font-size: 13.5px;
  color: #8E9AB1;
}

/* ============================================================
   responsive
   ============================================================ */

@media (max-width: 1024px) {
  .home-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .hero-lead {
    max-width: none;
  }

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

  .wall-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .home-split {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .topic-group {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "head"
      "figure"
      "list"
      "more";
    gap: 16px;
  }

  .ranking-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

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

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

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 23px;
  }

  h3 {
    font-size: 18px;
  }

  .fact-bar p {
    padding: 9px 20px;
    font-size: 13px;
  }

  .header-inner {
    padding: 12px 20px;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    flex: 1 0 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-top: 8px;
    padding: 6px 0;
    border-top: 1px solid var(--line);
  }

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

  .nav-list li a {
    min-height: 48px;
    padding: 0 12px;
    border-bottom: 1px solid var(--line);
    border-left: 3px solid transparent;
    border-radius: 0;
  }

  .nav-list li a.is-current {
    border-bottom-color: var(--line);
    border-left-color: var(--accent);
    background-color: rgba(228, 87, 46, 0.06);
  }

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 20px;
    padding-right: 20px;
  }

  .page-header {
    padding: 16px 0 28px;
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 32px;
  }

  .home-hero {
    padding: 28px 0 40px;
  }

  .hero-copy .page-title {
    font-size: 32px;
  }

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

  .home-topics,
  .home-wall,
  .home-split,
  .home-index {
    padding: 40px 0;
  }

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

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

  .update-row {
    grid-template-columns: 88px minmax(0, 1fr);
    grid-template-areas:
      "date name"
      "date tags";
    align-items: start;
    gap: 6px 12px;
  }

  .update-row .update-date {
    grid-area: date;
  }

  .update-row .update-name {
    grid-area: name;
  }

  .update-row .tag-topic {
    grid-area: tags;
    justify-self: start;
  }

  .update-row .tag-state {
    grid-area: tags;
    justify-self: start;
    margin-left: 84px;
  }

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

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

  .field-row + .field-row {
    border-top: 1px solid var(--line);
  }

  .field-cell {
    padding: 8px 16px;
  }

  .field-row-head {
    display: none;
  }

  .field-name {
    padding-top: 14px;
    font-size: 15px;
  }

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

  .log-row {
    grid-template-columns: 72px minmax(0, 1fr);
    grid-template-areas:
      "thumb main"
      "thumb state";
    gap: 6px 14px;
    align-items: start;
  }

  .log-row .log-thumb {
    grid-area: thumb;
    width: 72px;
  }

  .log-row .log-main {
    grid-area: main;
  }

  .log-row .log-state {
    grid-area: state;
    justify-self: start;
  }

  .rank-item {
    grid-template-columns: 36px 64px minmax(0, 1fr);
    gap: 12px;
  }

  .rank-item .rank-thumb {
    width: 64px;
  }

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

  .footer-inner {
    padding: 36px 20px 24px;
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .footer-brand {
    order: -1;
  }

  .footer-copy {
    padding: 16px 20px 28px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 21px;
  }

  .page-title,
  .hero-copy .page-title,
  .error-hero h1 {
    font-size: 28px;
  }

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

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

  .cover-wide {
    grid-column: span 1;
  }

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

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

  .method-list,
  .next-grid,
  .error-path-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .update-row {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "date"
      "name"
      "tags";
  }

  .update-row .tag-state {
    margin-left: 0;
  }

  .hero-topics li a,
  .link-strong {
    width: 100%;
    justify-content: center;
  }
}