:root {
  --bg: #FDFBF7;
  --ink: #2D2A26;
  --ink-soft: #6B6560;
  --line: #E5E0D8;
  --card: #FFFFFF;
  --coral: #E8654A;
  --lime: #7BA05B;
  --sky: #4A90B8;
  --lavender: #8B7BA8;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 2px rgba(45, 42, 38, 0.06);
  --shadow-md: 0 4px 14px rgba(45, 42, 38, 0.08);
  --shadow-lg: 0 10px 28px rgba(45, 42, 38, 0.12);
  --serif: Georgia, "Noto Serif SC", "Songti SC", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1200px;
  --gap: 24px;
}

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

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

body.site-body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

h1, h2, h3, h4 {
  font-family: var(--serif);
  color: var(--ink);
  line-height: 1.35;
  margin: 0 0 12px;
  font-weight: 700;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 14px;
}

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

figure {
  margin: 0;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

/* ================= layout ================= */
.utility-bar {
  background: #F4EFE7;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.utility-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 6px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.utility-status {
  color: var(--ink-soft);
}

.utility-status::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  margin-right: 6px;
  vertical-align: 1px;
}

.utility-nav {
  margin-left: auto;
  display: flex;
  gap: 16px;
}

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

.utility-nav a:hover {
  color: var(--coral);
}

.utility-lang {
  color: var(--ink-soft);
}

.utility-help {
  color: var(--ink-soft);
}

.utility-help:hover {
  color: var(--coral);
}

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--ink);
  flex-shrink: 0;
}

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

.brand-name {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}

.brand-slogan {
  font-size: 0.78rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

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

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 10px 14px;
  color: var(--ink);
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  transition: background 0.18s ease, color 0.18s ease;
  line-height: 1.4;
}

.nav-list a:hover {
  background: #F4EFE7;
  color: var(--coral);
}

.nav-list a.is-current {
  color: var(--coral);
  font-weight: 700;
  background: #FBEDE9;
}

.site-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 32px 20px 56px;
  display: block;
}

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

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

/* ================= components ================= */
.section {
  margin-bottom: 56px;
}

.section-head {
  margin-bottom: 24px;
  max-width: 780px;
}

.section-head h2,
.section-title {
  font-family: var(--serif);
  font-size: 1.5rem;
  margin: 0 0 8px;
  position: relative;
  padding-left: 14px;
}

.section-head h2::before,
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 5px;
  height: 1.05em;
  background: var(--coral);
  border-radius: 2px;
}

.section-desc {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
}

.section-lead {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0 0 20px;
  max-width: 780px;
}

.section-foot {
  margin-top: 20px;
  margin-bottom: 0;
}

.link-more {
  display: inline-block;
  font-weight: 700;
  color: var(--sky);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.link-more::after {
  content: " →";
}

.link-more:hover {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  border: 1px solid transparent;
  text-align: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background: var(--coral);
  color: #FFFFFF;
  border-color: var(--coral);
}

.btn-primary:hover {
  background: #D2543A;
  border-color: #D2543A;
  color: #FFFFFF;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--sky);
  color: #FFFFFF;
  border-color: var(--sky);
}

.btn-secondary:hover {
  background: #3D7A9C;
  border-color: #3D7A9C;
  color: #FFFFFF;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-ghost:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: #F4EFE7;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

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

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

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

.breadcrumb-current {
  color: var(--ink);
  font-weight: 700;
}

.page-header {
  margin-bottom: 36px;
  max-width: 900px;
}

.page-title {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 12px;
  line-height: 1.3;
}

.page-description {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: 0;
  max-width: 820px;
}

.page-media {
  margin-top: 24px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
}

.page-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-media figcaption,
.figure-caption {
  padding: 10px 16px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  background: var(--card);
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  line-height: 1.6;
  white-space: nowrap;
}

.tag-launch,
.type-launch {
  background: #EAF3E4;
  color: #4F7238;
}

.tag-adjust,
.type-adjust {
  background: #E4EEF5;
  color: #2F6C8C;
}

.tag-offline,
.type-offline {
  background: #F0EBF5;
  color: #6A5885;
}

/* ================= pages: index ================= */
.hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: 24px 0 56px;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  padding: 40px;
  align-items: center;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--coral);
  background: #FBEDE9;
  padding: 4px 12px;
  border-radius: 999px;
  margin: 0 0 16px;
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: 2rem;
  margin: 0 0 16px;
  line-height: 1.3;
}

.hero-lead {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: 0 0 24px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}

.hero-facts li {
  font-size: 0.88rem;
  color: var(--ink-soft);
  position: relative;
  padding-left: 16px;
}

.hero-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--lime);
}

.hero-facts li:nth-child(2)::before {
  background: var(--sky);
}

.hero-facts li:nth-child(3)::before {
  background: var(--lavender);
}

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
  min-width: 0;
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-media figcaption {
  padding: 10px 16px;
  font-size: 0.82rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.update-brief-list {
  border-left: 3px solid var(--line);
  padding-left: 0;
}

.update-brief-item {
  display: grid;
  grid-template-columns: 96px 88px 92px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  position: relative;
}

.update-brief-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 22px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--coral);
  border: 2px solid var(--bg);
}

.update-brief-item:nth-child(3n)::before {
  background: var(--sky);
}

.update-brief-item:nth-child(3n + 1)::before {
  background: var(--lime);
}

.update-date {
  font-family: var(--serif);
  font-weight: 700;
  color: var(--ink);
  font-size: 0.9rem;
}

.update-type {
  justify-self: start;
}

.update-genre {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.update-text {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink);
  min-width: 0;
}

.update-group-title {
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-soft);
  padding: 8px 16px;
  margin: 8px 0 10px;
  background: #F4EFE7;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--coral);
}

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

.genre-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.genre-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #D8D1C4;
}

.genre-media {
  overflow: hidden;
  background: #F4EFE7;
}

.genre-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.genre-card:hover .genre-media img {
  transform: scale(1.03);
}

.genre-name {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0 0 8px;
}

.genre-scope {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 0 8px;
}

.genre-direction {
  font-size: 0.88rem;
  color: var(--ink);
  margin: 0 0 12px;
}

.genre-link {
  margin-top: auto;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--sky);
  display: inline-block;
}

.genre-link::after {
  content: " →";
}

.genre-link:hover {
  color: var(--coral);
}

.section-genres .genre-card {
  padding-bottom: 16px;
}

.section-genres .genre-name,
.section-genres .genre-scope,
.section-genres .genre-direction,
.section-genres .genre-link {
  padding-left: 16px;
  padding-right: 16px;
}

.section-genres .genre-name {
  margin-top: 14px;
}

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

.topic-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #D8D1C4;
}

.section-topics .topic-card {
  border-left: 4px solid var(--lavender);
}

.section-topics .topic-card:nth-child(2) {
  border-left-color: var(--sky);
}

.section-topics .topic-card:nth-child(3) {
  border-left-color: var(--lime);
}

.section-topics .topic-card:nth-child(4) {
  border-left-color: var(--coral);
}

.topic-name {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0 0 8px;
}

.topic-scope {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 0 8px;
}

.topic-direction {
  font-size: 0.88rem;
  color: var(--ink);
  margin: 0 0 14px;
}

.topic-link {
  margin-top: auto;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--sky);
  align-self: flex-start;
}

.topic-link::after {
  content: " →";
}

.topic-link:hover {
  color: var(--coral);
}

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

.before-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 20px 20px;
  position: relative;
}

.before-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--coral);
  color: #FFFFFF;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 12px;
}

.before-item:nth-child(2) .before-index {
  background: var(--sky);
}

.before-item:nth-child(3) .before-index {
  background: var(--lime);
}

.before-name {
  font-family: var(--serif);
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.before-text {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

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

.boundary-col {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.boundary-name {
  font-family: var(--serif);
  font-size: 1rem;
  margin: 0 0 8px;
  color: var(--ink);
}

.boundary-text {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

.boundary-link {
  display: inline-block;
  margin-top: 12px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--sky);
}

.boundary-link::after {
  content: " →";
}

.boundary-link:hover {
  color: var(--coral);
}

/* ================= pages: theater-updates ================= */
.updates-timeline {
  margin-bottom: 56px;
}

.timeline-group {
  margin-bottom: 32px;
}

.timeline-month {
  font-family: var(--serif);
  font-size: 1.15rem;
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
  color: var(--ink);
}

.timeline-list {
  position: relative;
  padding-left: 24px;
  border-left: 2px solid var(--line);
}

.timeline-item {
  display: grid;
  grid-template-columns: 92px 88px 96px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 12px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sky);
  border: 2px solid var(--bg);
}

.timeline-item:nth-child(2n)::before {
  background: var(--coral);
}

.timeline-item:nth-child(3n)::before {
  background: var(--lime);
}

.timeline-date {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--ink);
}

.timeline-genre {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.timeline-note {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink);
  min-width: 0;
}

.change-types {
  margin-bottom: 56px;
}

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

.type-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  border-top: 4px solid var(--lime);
}

.type-card:nth-child(2) {
  border-top-color: var(--sky);
}

.type-card:nth-child(3) {
  border-top-color: var(--lavender);
}

.type-title {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0 0 10px;
}

.type-desc {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

.reading-notes {
  margin-bottom: 32px;
}

.reading-flow {
  max-width: 760px;
}

.reading-flow p {
  font-size: 0.98rem;
  color: var(--ink);
  margin: 0 0 16px;
}

/* ================= pages: genre-channels ================= */
.page-layout {
  display: block;
}

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

.genre-overview {
  margin-bottom: 48px;
}

.genre-card-drama .genre-media { border-bottom: 3px solid var(--coral); }
.genre-card-mystery .genre-media { border-bottom: 3px solid var(--sky); }
.genre-card-historical .genre-media { border-bottom: 3px solid var(--lavender); }
.genre-card-urban .genre-media { border-bottom: 3px solid var(--lime); }
.genre-card-scifi .genre-media { border-bottom: 3px solid var(--sky); }
.genre-card-family .genre-media { border-bottom: 3px solid var(--coral); }

.genre-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.genre-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-soft);
  background: #F4EFE7;
  padding: 2px 8px;
  border-radius: 999px;
  margin-bottom: 8px;
  align-self: flex-start;
}

.genre-caption {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 8px 0 0;
}

.genre-advice {
  margin-bottom: 48px;
}

.advice-body {
  max-width: 780px;
}

.advice-body p {
  font-size: 0.98rem;
  color: var(--ink);
  margin: 0 0 14px;
}

.genre-relation {
  margin-bottom: 32px;
}

.relation-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.relation-col {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
}

.relation-col:first-child {
  border-top: 4px solid var(--coral);
}

.relation-col:last-child {
  border-top: 4px solid var(--lavender);
}

.relation-title {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0 0 10px;
}

.relation-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 12px;
}

/* ================= pages: topic-collections ================= */
.topic-list-section {
  margin-bottom: 56px;
}

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

.topic-grid .topic-card {
  padding: 0;
  overflow: hidden;
}

.topic-figure {
  overflow: hidden;
  background: #F4EFE7;
}

.topic-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.topic-grid .topic-card:hover .topic-figure img {
  transform: scale(1.03);
}

.topic-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.topic-card-1 { border-left: 4px solid var(--coral); }
.topic-card-2 { border-left: 4px solid var(--sky); }
.topic-card-3 { border-left: 4px solid var(--lime); }
.topic-card-4 { border-left: 4px solid var(--lavender); }
.topic-card-5 { border-left: 4px solid var(--coral); }

.topic-desc {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

.topic-meta {
  margin: auto 0 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  font-size: 0.86rem;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.topic-meta dt {
  color: var(--ink-soft);
  font-weight: 700;
  white-space: nowrap;
}

.topic-meta dd {
  margin: 0;
  color: var(--ink);
  min-width: 0;
}

.topic-reading-section {
  margin-bottom: 56px;
}

.topic-reading-section .reading-flow {
  max-width: 780px;
}

.topic-reading-section .reading-text {
  font-size: 0.98rem;
  color: var(--ink);
  margin: 0 0 16px;
}

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

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

.compare-col {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
}

.compare-col-topic {
  border-top: 4px solid var(--lavender);
}

.compare-col-genre {
  border-top: 4px solid var(--coral);
}

.compare-title {
  font-family: var(--serif);
  font-size: 1.1rem;
  margin: 0 0 10px;
}

.compare-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 14px;
}

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

.compare-list li {
  font-size: 0.9rem;
  color: var(--ink);
  padding-left: 18px;
  position: relative;
}

.compare-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--lavender);
}

.compare-col-genre .compare-list li::before {
  background: var(--coral);
}

/* ================= pages: viewing-guide ================= */
.guide-section {
  margin-bottom: 56px;
}

.step-list {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.step-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 16px;
  row-gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.step-index {
  grid-row: 1 / 3;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--coral);
  color: #FFFFFF;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.05rem;
  align-self: start;
}

.step-item:nth-child(2) .step-index { background: var(--sky); }
.step-item:nth-child(3) .step-index { background: var(--lime); }
.step-item:nth-child(4) .step-index { background: var(--lavender); }
.step-item:nth-child(5) .step-index { background: var(--coral); }

.step-title {
  font-family: var(--serif);
  font-size: 1.05rem;
  margin: 0;
  align-self: center;
}

.step-text {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
  min-width: 0;
}

.guide-figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--card);
  max-width: 900px;
}

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

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

.route-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  border-left: 4px solid var(--sky);
}

.route-item:nth-child(2) { border-left-color: var(--coral); }
.route-item:nth-child(3) { border-left-color: var(--lime); }
.route-item:nth-child(4) { border-left-color: var(--lavender); }
.route-item:nth-child(5) { border-left-color: var(--sky); }

.route-title {
  font-family: var(--serif);
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.route-title a {
  color: var(--ink);
}

.route-title a:hover {
  color: var(--coral);
}

.route-text {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

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

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

.faq-item[open] {
  border-color: #D8D1C4;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  cursor: pointer;
  padding: 16px 44px 16px 20px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
  list-style: none;
  position: relative;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: background 0.18s ease;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--coral);
  line-height: 1;
  transition: transform 0.2s ease;
}

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

.faq-question:hover {
  background: #F9F5EE;
}

.faq-answer {
  padding: 4px 20px 18px;
  border-top: 1px solid var(--line);
}

.faq-symptom {
  font-size: 0.92rem;
  color: var(--ink);
  margin: 12px 0 8px;
  padding-left: 14px;
  border-left: 3px solid var(--coral);
}

.faq-cause {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0 0 8px;
  padding-left: 14px;
  border-left: 3px solid var(--sky);
}

.faq-fix {
  font-size: 0.92rem;
  color: var(--ink);
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--lime);
}

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
  margin-bottom: 16px;
}

.check-item {
  font-size: 0.92rem;
  color: var(--ink);
  padding-left: 30px;
  position: relative;
  min-height: 24px;
  display: flex;
  align-items: center;
}

.check-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 2px solid var(--lime);
  border-radius: 4px;
  background: #F4F9EE;
}

.check-item::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 50%;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--lime);
  border-bottom: 2px solid var(--lime);
  transform: translateY(-70%) rotate(45deg);
}

.check-note {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0;
}

.boundary-body {
  max-width: 820px;
}

.boundary-body .boundary-text {
  font-size: 0.95rem;
  color: var(--ink);
  margin: 0 0 14px;
}

.guide-boundary .boundary-link {
  display: inline-block;
  margin-top: 4px;
  font-weight: 700;
  color: var(--sky);
}

.guide-boundary .boundary-link::after {
  content: " →";
}

/* ================= pages: 404 ================= */
.error-main {
  padding-top: 56px;
  padding-bottom: 80px;
}

.error-block {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px 32px;
}

.error-code {
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--coral);
  margin: 0 0 8px;
  line-height: 1;
}

.error-block h1 {
  font-size: 1.6rem;
  margin: 0 0 12px;
}

.error-lead {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: 0 0 8px;
}

.error-hint {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 24px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease;
}

.error-links a:hover {
  border-color: var(--coral);
  color: var(--coral);
  background: #FBEDE9;
}

.error-note {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ================= footer ================= */
.site-footer {
  background: #F4EFE7;
  border-top: 1px solid var(--line);
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 20px 28px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 32px;
}

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

.footer-brand-name {
  display: block;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.footer-desc {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0;
}

.footer-title {
  font-family: var(--serif);
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--ink);
}

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

.footer-list a {
  display: inline-block;
  color: var(--ink-soft);
  font-size: 0.9rem;
  padding: 2px 0;
  min-height: 24px;
}

.footer-list a:hover {
  color: var(--coral);
}

.footer-list a.is-current {
  color: var(--coral);
  font-weight: 700;
}

.footer-text {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0 0 12px;
}

.footer-link {
  display: inline-block;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--sky);
}

.footer-link::after {
  content: " →";
}

.footer-link:hover {
  color: var(--coral);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 20px 24px;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 0;
}

/* ================= responsive ================= */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px;
  }

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

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

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

@media (max-width: 768px) {
  h1,
  .page-title,
  .hero-title {
    font-size: 1.5rem;
  }

  h2,
  .section-head h2,
  .section-title {
    font-size: 1.3rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  .utility-inner {
    padding: 6px 16px;
    gap: 10px;
    font-size: 0.78rem;
  }

  .header-inner {
    padding: 10px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .brand-slogan {
    font-size: 0.72rem;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex-basis: 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    width: 100%;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list a {
    padding: 12px 14px;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .site-main {
    padding: 20px 16px 40px;
  }

  .hero {
    margin: 16px 0 40px;
  }

  .hero-inner {
    padding: 24px 20px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .section {
    margin-bottom: 40px;
  }

  .update-brief-list {
    border-left-width: 2px;
  }

  .update-brief-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px;
  }

  .update-brief-item::before {
    left: -18px;
    top: 20px;
  }

  .update-type {
    justify-self: start;
  }

  .genre-grid,
  .topic-list,
  .before-list,
  .boundary-grid,
  .type-grid,
  .relation-columns,
  .topic-grid,
  .compare-columns,
  .route-list,
  .check-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .timeline-list {
    padding-left: 16px;
  }

  .timeline-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px;
  }

  .timeline-item::before {
    left: -23px;
    top: 20px;
  }

  .step-item {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 16px;
  }

  .step-index {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .faq-question {
    padding: 14px 40px 14px 16px;
    font-size: 0.95rem;
  }

  .faq-answer {
    padding: 4px 16px 16px;
  }

  .error-block {
    padding: 36px 20px;
  }

  .error-code {
    font-size: 2.4rem;
  }

  .error-links {
    flex-direction: column;
    align-items: stretch;
  }

  .error-links a {
    justify-content: center;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 16px 20px;
  }

  .footer-bottom {
    padding: 14px 16px 20px;
  }
}

@media (max-width: 420px) {
  .utility-nav {
    gap: 12px;
  }

  .hero-eyebrow {
    font-size: 0.74rem;
  }

  .before-index,
  .step-index {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }
}