/* ============================================================
   BASE
   ============================================================ */
:root {
  --bg-dark: #17181c;
  --bg-panel: #2a2d33;
  --bg-panel-soft: #1f2126;
  --bg-hover: #33363d;
  --text-main: #d7d9de;
  --text-dim: #9a9ea8;
  --text-faint: #6b6f78;
  --green: #3ddc84;
  --yellow: #e2b93b;
  --red: #e05b5b;
  --border: #3a3e46;
  --border-soft: #2f3238;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --font-body: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --container: 1200px;
  --radius: 6px;
  --radius-sm: 4px;
  --header-h: 60px;
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-main);
  background-color: var(--bg-dark);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: #6fe8a7;
}

ul,
ol {
  list-style: none;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-mono);
  line-height: 1.35;
  color: var(--text-main);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-soft);
}

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

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-link::before {
  content: "$";
  color: var(--green);
  font-weight: 400;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.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 {
  display: block;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-link::before {
  content: "›";
  color: var(--text-faint);
  font-weight: 700;
}

.nav-link:hover {
  color: var(--text-main);
  background-color: var(--bg-panel-soft);
}

.nav-link.is-current {
  color: var(--green);
  background-color: var(--bg-panel-soft);
}

.nav-link.is-current::before {
  content: "■";
  color: var(--green);
  font-size: 10px;
}

.site-main {
  min-height: calc(100vh - var(--header-h) - 320px);
}

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

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.site-footer {
  border-top: 1px solid var(--border-soft);
  background-color: var(--bg-dark);
  margin-top: 48px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-soft);
  position: relative;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 24px;
  height: 2px;
  background-color: var(--green);
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-links a::before {
  content: "›";
  color: var(--text-faint);
}

.footer-links a:hover {
  color: var(--green);
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-brand {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
}

.footer-brand::before {
  content: "$ ";
  color: var(--green);
}

.footer-copy {
  font-size: 13px;
  color: var(--text-faint);
}

/* ============================================================
   TERMINAL BARS
   ============================================================ */

.term-statusbar,
.terminal-bar {
  background-color: var(--bg-panel-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 8px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
}

.term-brand,
.terminal-brand,
.terminal-bar-text,
.terminal-text {
  font-weight: 700;
  color: var(--text-main);
}

.term-status-dot,
.terminal-dot,
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-faint);
  flex-shrink: 0;
}

.term-status-dot--green,
.status-ok {
  background-color: var(--green);
}

.term-status-label,
.terminal-module {
  color: var(--text-faint);
}

.term-status-label::before,
.terminal-module::before {
  content: "/";
  margin-right: 4px;
  color: var(--text-faint);
}

.terminal-bar-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ============================================================
   COMPONENTS
   ============================================================ */

/* --- Breadcrumb --- */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 20px;
  font-family: var(--font-mono);
}

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

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

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

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

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

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

.page-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 10px;
}

.page-title::before {
  content: "# ";
  color: var(--green);
}

.page-description {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 720px;
}

/* --- Section title --- */

.section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background-color: var(--green);
  border-radius: 2px;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.section-note,
.section-desc,
.section-intro {
  font-size: 14px;
  color: var(--text-dim);
}

.section-note a {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* --- Genre tag --- */

.genre-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background-color: var(--bg-panel-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  transition: border-color var(--transition), color var(--transition), background-color var(--transition);
  white-space: nowrap;
}

.genre-tag::before {
  content: "#";
  color: var(--green);
}

.genre-tag:hover {
  border-color: var(--green);
  color: var(--green);
  background-color: var(--bg-panel);
}

/* --- Hero --- */

.hero-section {
  padding: 48px 0 40px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  position: relative;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
}

.hero-title::before {
  content: "$ ";
  color: var(--green);
}

.hero-lead {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--yellow);
  padding: 8px 14px;
  background-color: var(--bg-panel-soft);
  border-left: 3px solid var(--yellow);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 480px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background-color: var(--green);
  color: var(--bg-dark);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius);
  transition: background-color var(--transition);
}

.hero-cta::after {
  content: "→";
}

.hero-cta:hover {
  background-color: #6fe8a7;
  color: var(--bg-dark);
}

.hero-figure {
  background-color: var(--bg-panel-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.hero-tag-row {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 8px;
}

/* --- Cover card --- */

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

.cover-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

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

.cover-link {
  display: block;
}

.cover-link img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.cover-title {
  font-size: 15px;
  font-weight: 700;
  padding: 12px 14px 4px;
  color: var(--text-main);
}

.cover-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 14px 12px;
  flex-wrap: wrap;
}

.genre-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--yellow);
  padding: 2px 8px;
  background-color: rgba(226, 185, 59, 0.1);
  border-radius: var(--radius-sm);
}

.batch-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}

/* --- Trend list --- */

.trend-panel {
  margin-top: 48px;
}

.trend-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.trend-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-soft);
  transition: background-color var(--transition);
}

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

.trend-item:hover {
  background-color: var(--bg-hover);
}

.trend-rank {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--green);
  width: 28px;
  text-align: right;
  flex-shrink: 0;
}

.trend-rank::after {
  content: ".";
}

.trend-name {
  font-size: 15px;
  color: var(--text-main);
  flex: 1;
}

.trend-genre {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--yellow);
  padding: 2px 8px;
  background-color: rgba(226, 185, 59, 0.1);
  border-radius: var(--radius-sm);
}

/* --- Genre entry --- */

.genre-entry {
  margin-top: 48px;
}

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

.genre-card {
  display: block;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition), background-color var(--transition);
}

.genre-card:hover {
  border-color: var(--green);
  background-color: var(--bg-hover);
}

.genre-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.genre-card-title::before {
  content: "› ";
  color: var(--green);
}

.genre-card-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* --- Help path --- */

.help-path {
  margin-top: 48px;
}

.help-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: start;
}

.help-questions {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
}

.help-subtitle {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}

.faq-item {
  border-bottom: 1px solid var(--border-soft);
}

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

.faq-item summary {
  padding: 12px 0;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

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

.faq-item summary::before {
  content: "›";
  color: var(--green);
  font-family: var(--font-mono);
  transition: transform var(--transition);
}

.faq-item[open] summary::before {
  transform: rotate(90deg);
}

.faq-item p {
  padding: 0 0 14px 20px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.faq-item p a {
  font-family: var(--font-mono);
  font-size: 13px;
}

.help-entries {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.entry-card {
  display: block;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition), background-color var(--transition);
}

.entry-card:hover {
  border-color: var(--green);
  background-color: var(--bg-hover);
}

.entry-card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-main);
}

.entry-card-title::before {
  content: "$ ";
  color: var(--green);
}

.entry-card-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* --- Related links --- */

.related-links {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-faint);
}

.related-links-label::before {
  content: "$ ";
  color: var(--green);
}

.related-links-item,
.related-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), color var(--transition);
}

.related-links-item:hover,
.related-link:hover {
  border-color: var(--green);
  color: var(--green);
}

/* ============================================================
   PAGES
   ============================================================ */

/* --- Catalog --- */

.page-layout {
  display: grid;
  gap: 32px;
  align-items: start;
}

.sidebar-left {
  grid-template-columns: 220px 1fr;
}

.catalog-anchor {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
}

.anchor-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}

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

.anchor-item a {
  display: block;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

.anchor-item a::before {
  content: "#";
  color: var(--text-faint);
  margin-right: 4px;
}

.anchor-item a:hover {
  color: var(--green);
  background-color: var(--bg-panel-soft);
  border-left-color: var(--green);
}

.anchor-tip {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
  font-size: 12px;
  color: var(--text-faint);
  line-height: 1.6;
}

.catalog-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}

.theme-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.theme-group-head {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-soft);
}

.theme-group-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.theme-group-title::before {
  content: "## ";
  color: var(--green);
}

.theme-group-desc {
  font-size: 14px;
  color: var(--text-dim);
}

.theme-works {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.work-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.work-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

.work-cover {
  overflow: hidden;
}

.work-cover img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.work-name {
  font-size: 14px;
  font-weight: 600;
  padding: 10px 12px 2px;
  color: var(--text-main);
}

.work-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--yellow);
  padding: 0 12px 10px;
}

.back-nav {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
}

.back-nav-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
}

.back-nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.back-nav-link,
.return-link,
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
  transition: border-color var(--transition), color var(--transition);
}

.back-nav-link::before,
.return-link::before,
.back-link::before {
  content: "‹";
  color: var(--green);
}

.back-nav-link:hover,
.return-link:hover,
.back-link:hover {
  border-color: var(--green);
  color: var(--green);
}

/* --- Schedule --- */

.version-overview {
  margin-bottom: 40px;
}

.version-overview-shell {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 24px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.version-media {
  min-height: 200px;
}

.version-media img {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
}

.version-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
}

.version-status {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.version-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--green);
  display: inline-block;
}

.version-note {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.schedule-section {
  margin-bottom: 40px;
}

.record-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.record-item {
  display: flex;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
  align-items: flex-start;
}

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

.record-type {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  margin-top: 2px;
}

.record-type.is-new {
  color: var(--green);
  background-color: rgba(61, 220, 132, 0.12);
}

.record-type.is-adjust {
  color: var(--yellow);
  background-color: rgba(226, 185, 59, 0.12);
}

.record-type.is-fix {
  color: var(--red);
  background-color: rgba(224, 91, 91, 0.12);
}

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

.record-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.record-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  margin-bottom: 4px;
}

.record-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.schedule-help {
  margin-top: 40px;
  padding: 24px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}

.help-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.help-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--green);
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
}

.step-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.step-desc a {
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-return {
  margin-top: 40px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* --- Troubleshooting --- */

.trouble-figure {
  margin-bottom: 32px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background-color: var(--bg-panel-soft);
}

.trouble-hero-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.trouble-figure figcaption {
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-faint);
}

.layout-shell {
  display: grid;
  gap: 32px;
  align-items: start;
}

.sidebar-right {
  grid-template-columns: 1fr 300px;
}

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

.trouble-section {
  margin-bottom: 32px;
}

.trouble-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.trouble-item {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.trouble-summary {
  padding: 16px 20px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
  list-style: none;
  transition: background-color var(--transition);
}

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

.trouble-summary::before {
  content: "›";
  color: var(--green);
  font-size: 16px;
  transition: transform var(--transition);
}

.trouble-item[open] .trouble-summary {
  background-color: var(--bg-hover);
}

.trouble-item[open] .trouble-summary::before {
  transform: rotate(90deg);
}

.trouble-detail {
  padding: 0 20px 16px 44px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.side-column {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.path-card,
.prepare-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
}

.side-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}

.side-title::before {
  content: "$ ";
  color: var(--green);
}

.path-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.path-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.path-step {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--green);
  background-color: rgba(61, 220, 132, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.path-content {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.path-name {
  font-weight: 600;
  color: var(--text-main);
  display: block;
  margin-bottom: 2px;
}

.path-desc {
  font-size: 13px;
  color: var(--text-faint);
}

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

.prepare-item {
  font-size: 13px;
  color: var(--text-dim);
  padding-left: 18px;
  position: relative;
  line-height: 1.6;
}

.prepare-item::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--green);
  font-family: var(--font-mono);
}

.feedback-note {
  margin-top: 32px;
  padding: 20px 24px;
  background-color: var(--bg-panel-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}

.feedback-text {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.feedback-text a {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* --- Guide --- */

.guide-steps {
  margin-bottom: 40px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.step-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--green);
  margin-bottom: 12px;
}

.step-number::before {
  content: "0";
}

.step-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.guide-entry {
  margin-bottom: 40px;
}

.entry-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.entry-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.entry-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.entry-title::before {
  content: "› ";
  color: var(--green);
}

.entry-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
  flex: 1;
}

.entry-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
  align-self: flex-start;
  margin-top: 4px;
}

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

.guide-figure {
  margin-bottom: 40px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background-color: var(--bg-panel-soft);
}

.guide-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.figure-caption {
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-faint);
}

.guide-mistakes {
  margin-bottom: 40px;
}

.mistakes-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.mistake-item {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
}

.mistake-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--yellow);
}

.mistake-title::before {
  content: "! ";
}

.mistake-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.mistake-desc a {
  font-family: var(--font-mono);
  font-size: 13px;
}

.guide-trouble {
  padding: 20px 24px;
  background-color: var(--bg-panel-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}

.trouble-desc {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 10px;
  line-height: 1.7;
}

.trouble-desc a {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* --- About --- */

.about-section {
  margin-bottom: 48px;
}

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

.scope-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 24px;
}

.scope-card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.scope-card-title::before {
  content: "## ";
  color: var(--green);
}

.scope-card-text {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 12px;
}

.scope-card-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
}

.scope-card-link::after {
  content: " →";
}

.boundary-content {
  margin-top: 20px;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.boundary-text {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.boundary-text::before {
  content: "› ";
  color: var(--yellow);
  font-family: var(--font-mono);
}

.feedback-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.feedback-card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
}

.feedback-card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feedback-card-title::before {
  content: "$ ";
  color: var(--green);
}

.feedback-card-text {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 10px;
}

.feedback-card-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
}

.feedback-card-link::after {
  content: " →";
}

.structure-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
  margin-top: 20px;
  align-items: start;
}

.structure-figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background-color: var(--bg-panel-soft);
}

.structure-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.structure-caption {
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-faint);
}

.structure-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.structure-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft);
}

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

.structure-link {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-main);
  flex-shrink: 0;
}

.structure-link::before {
  content: "› ";
  color: var(--green);
}

.structure-link:hover {
  color: var(--green);
}

.structure-desc {
  font-size: 12px;
  color: var(--text-faint);
  text-align: right;
}

/* --- 404 --- */

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 80px 24px;
  display: flex;
  justify-content: center;
}

.error-terminal {
  max-width: 560px;
  width: 100%;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 40px;
  text-align: left;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--red);
  line-height: 1.2;
  margin-bottom: 8px;
}

.error-code::before {
  content: "ERROR ";
  font-size: 16px;
  color: var(--text-faint);
  display: block;
  margin-bottom: 4px;
}

.error-terminal h1 {
  font-size: 22px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 24px;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background-color: var(--green);
  color: var(--bg-dark);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.btn-back::before {
  content: "‹";
}

.btn-back:hover {
  background-color: #6fe8a7;
}

.error-help {
  font-size: 13px;
  color: var(--text-faint);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.error-help a {
  font-family: var(--font-mono);
  font-size: 13px;
}

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

@media (max-width: 992px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-figure img {
    height: 260px;
  }

  .hero-tag-row {
    grid-column: 1;
  }

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

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

  .help-layout {
    grid-template-columns: 1fr;
  }

  .theme-works {
    grid-template-columns: repeat(3, 1fr);
  }

  .sidebar-left {
    grid-template-columns: 1fr;
  }

  .catalog-anchor {
    position: static;
    margin-bottom: 8px;
  }

  .anchor-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
  }

  .anchor-item a {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
  }

  .anchor-tip {
    margin-top: 10px;
  }

  .sidebar-right {
    grid-template-columns: 1fr;
  }

  .side-column {
    position: static;
  }

  .version-overview-shell {
    grid-template-columns: 1fr;
  }

  .version-media img {
    height: 180px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .entry-cards {
    grid-template-columns: 1fr;
  }

  .mistakes-list {
    grid-template-columns: 1fr;
  }

  .scope-grid {
    grid-template-columns: 1fr;
  }

  .feedback-grid {
    grid-template-columns: 1fr;
  }

  .structure-wrap {
    grid-template-columns: 1fr;
  }

  .structure-image {
    height: 200px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 2px;
  }

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

  .nav-link {
    display: flex;
    padding: 12px 14px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .nav-link.is-current {
    background-color: var(--bg-panel-soft);
  }

  .home-main,
  .inner-main {
    padding: 24px 16px 48px;
  }

  .hero-section {
    padding: 32px 0 24px;
  }

  .hero-title {
    font-size: 26px;
  }

  .hero-figure img {
    height: 200px;
  }

  .cover-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cover-link img {
    height: 220px;
  }

  .genre-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .trend-item {
    padding: 12px 14px;
    gap: 12px;
  }

  .trend-rank {
    width: 22px;
    font-size: 14px;
  }

  .theme-works {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .work-cover img {
    height: 140px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px;
  }

  .help-steps {
    grid-template-columns: 1fr;
  }

  .record-item {
    flex-direction: column;
    gap: 8px;
    padding: 14px 16px;
  }

  .record-type {
    align-self: flex-start;
  }

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

  .section-title {
    font-size: 18px;
  }

  .trouble-summary {
    padding: 14px 16px;
    font-size: 13px;
  }

  .trouble-detail {
    padding: 0 16px 14px 36px;
    font-size: 13px;
  }

  .path-card,
  .prepare-card {
    padding: 16px;
  }

  .structure-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .structure-desc {
    text-align: left;
  }

  .error-main {
    padding: 48px 16px;
  }

  .error-terminal {
    padding: 24px;
  }

  .error-code {
    font-size: 36px;
  }
}

@media (max-width: 480px) {
  .theme-works {
    grid-template-columns: 1fr;
  }

  .work-cover img {
    height: 180px;
  }

  .cover-link img {
    height: 200px;
  }

  .hero-title {
    font-size: 22px;
  }

  .hero-lead {
    font-size: 13px;
    padding: 6px 12px;
  }

  .hero-desc {
    font-size: 14px;
  }

  .hero-cta {
    padding: 10px 18px;
    font-size: 13px;
  }

  .genre-tag {
    font-size: 12px;
    padding: 5px 12px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-title {
    margin-bottom: 10px;
  }

  .footer-links li {
    margin-bottom: 6px;
  }
}