:root {
  --bg-page: #F4F6F2;
  --bg-card: #FFFFFF;
  --ink-main: #1F2A24;
  --ink-soft: #4A5A52;
  --ink-faint: #6E7C74;
  --line-soft: #D6DCD4;
  --accent-route: #2E6B5E;
  --accent-route-dark: #235247;
  --accent-tag: #C2703A;
  --accent-tag-soft: #F3E4D8;
  --shadow-card: 0 1px 2px rgba(31, 42, 36, 0.06), 0 6px 16px rgba(31, 42, 36, 0.05);
  --radius-card: 8px;
  --radius-pill: 999px;
  --wrap-wide: 1180px;
  --wrap-text: 880px;
  --header-h: 68px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

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

* {
  box-sizing: border-box;
}

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

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

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

figure {
  margin: 0;
}

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

a:hover,
a:focus {
  color: var(--accent-route-dark);
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent-route);
  outline-offset: 2px;
  border-radius: 3px;
}

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

p {
  margin: 0 0 12px;
}

p:last-child {
  margin-bottom: 0;
}

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

dl,
dd,
dt {
  margin: 0;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background-color: var(--accent-route);
  color: #FFFFFF;
  z-index: 120;
  border-radius: 0 0 var(--radius-card) 0;
}

.skip-link:focus {
  left: 0;
}

/* ===== layout : header shell ===== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: rgba(244, 246, 242, 0.96);
  border-bottom: 1px solid var(--line-soft);
  backdrop-filter: saturate(140%) blur(6px);
}

.header-inner {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--ink-main);
  text-decoration: none;
}

.brand:hover,
.brand:focus {
  text-decoration: none;
  color: var(--ink-main);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-card);
  background-color: var(--accent-route);
  position: relative;
  flex: 0 0 auto;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #F4F6F2;
}

.brand-mark::before {
  left: 7px;
}

.brand-mark::after {
  right: 7px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-slogan {
  font-size: 12px;
  color: var(--ink-faint);
}

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

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

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

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--accent-route-dark);
  background-color: #E7EDE8;
  text-decoration: none;
}

.nav-link.is-current {
  color: #FFFFFF;
  background-color: var(--accent-route);
  font-weight: 600;
}

.nav-link.is-current:hover,
.nav-link.is-current:focus {
  color: #FFFFFF;
  background-color: var(--accent-route-dark);
}

/* ===== layout : main / inner container ===== */

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 20px 24px 56px;
}

.home-main {
  padding-bottom: 56px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-faint);
  padding: 6px 0 14px;
}

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

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

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

.breadcrumb-current {
  color: var(--ink-main);
  font-weight: 600;
}

.page-header {
  max-width: var(--wrap-text);
  margin: 0 0 34px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line-soft);
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: var(--ink-soft);
  margin: 0;
}

.section {
  margin-bottom: 52px;
}

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

.section-head {
  max-width: var(--wrap-text);
  margin-bottom: 22px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  padding-left: 12px;
  border-left: 4px solid var(--accent-route);
  line-height: 1.3;
}

.section-lead,
.section-desc,
.section-note {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

.section-more {
  margin-top: 18px;
}

.more-link,
.inline-link,
.section-tail a,
.work-footnote a {
  color: var(--accent-route);
  font-weight: 600;
}

.more-link::after,
.inline-link::after {
  content: " →";
  font-weight: 400;
}

/* ===== layout : footer ===== */

.site-footer {
  border-top: 1px solid var(--line-soft);
  background-color: #EDF1EA;
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 40px 24px 0;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand {
  max-width: 320px;
}

.footer-name {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-main);
  margin-bottom: 12px;
}

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

.footer-list a {
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.footer-list a:hover,
.footer-list a:focus {
  color: var(--accent-route-dark);
  text-decoration: underline;
}

.footer-bottom {
  max-width: var(--wrap-wide);
  margin: 32px auto 0;
  padding: 16px 24px 24px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--ink-faint);
}

/* ===== components : shared cards / tags / tables ===== */

.batch-block {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
}

.batch-no {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-route);
  margin-bottom: 6px;
}

.batch-note {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.batch-items,
.batch-list {
  display: grid;
  gap: 10px;
}

.batch-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  background-color: #FAFBF8;
}

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

.item-tag {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background-color: var(--accent-tag-soft);
  color: var(--accent-tag);
  white-space: nowrap;
}

.item-progress {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
}

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  margin-right: 6px;
  white-space: nowrap;
}

.tag-theme,
.genre-tag {
  background-color: var(--accent-tag-soft);
  color: var(--accent-tag);
}

.tag-state {
  background-color: #E1EDE7;
  color: var(--accent-route-dark);
}

.status-tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background-color: #E1EDE7;
  color: var(--accent-route-dark);
  white-space: nowrap;
}

.status-ongoing {
  background-color: #E1EDE7;
  color: var(--accent-route-dark);
}

.data-table,
.progress-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background-color: var(--bg-card);
}

.table-caption {
  text-align: left;
  font-size: 13px;
  color: var(--ink-faint);
  padding-bottom: 10px;
}

.data-table th,
.data-table td,
.progress-table th,
.progress-table td {
  border: 1px solid var(--line-soft);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.data-table thead th,
.progress-table thead th {
  background-color: #E7EDE8;
  font-weight: 700;
  color: var(--ink-main);
  white-space: nowrap;
}

.data-table tbody th,
.progress-table tbody th {
  background-color: #FAFBF8;
  font-weight: 600;
  white-space: nowrap;
}

.table-scroll,
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-card);
  -webkit-overflow-scrolling: touch;
}

.progress-num,
.progress-code {
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* ===== components : figures / covers ===== */

.hero-visual,
.feature-media,
.tema-cover,
.intro-figure,
.batch-cover,
.work-cover,
.guide-figure {
  display: block;
  overflow: hidden;
  border-radius: var(--radius-card);
  background-color: #E7EDE8;
}

.hero-image,
.feature-media img,
.tema-cover img,
.intro-figure img,
.batch-cover img,
.work-cover img,
.guide-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== pages : homepage ===== */

.fact-bar {
  margin: 0;
  padding: 10px 24px;
  background-color: var(--accent-route);
  color: #F4F6F2;
  font-size: 13px;
  text-align: center;
}

.hero-guide {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 40px 24px 44px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: center;
}

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

.hero-title {
  font-size: 34px;
  margin-bottom: 16px;
}

.hero-summary {
  font-size: 16px;
  color: var(--ink-soft);
  margin-bottom: 24px;
  max-width: 520px;
}

.hero-entries {
  display: grid;
  gap: 12px;
}

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

.entry-link {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 16px;
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  color: var(--ink-main);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.entry-link:hover,
.entry-link:focus {
  transform: translateY(-2px);
  border-color: var(--accent-route);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: var(--ink-main);
}

.entry-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--accent-route);
  border-radius: var(--radius-card);
  padding: 3px 8px;
  flex: 0 0 auto;
}

.entry-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.entry-name {
  font-size: 15px;
  font-weight: 700;
}

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

.hero-visual {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-card);
}

.hero-caption {
  font-size: 13px;
  color: var(--ink-faint);
  padding: 10px 4px 0;
}

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

.tema-card {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-card);
}

.tema-name {
  font-size: 17px;
}

.tema-scope {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

.tema-sample {
  font-size: 13px;
  color: var(--ink-faint);
  margin: auto 0 0;
}

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

.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
}

.feature-media {
  aspect-ratio: 16 / 10;
  border-radius: 0;
}

.feature-body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-name {
  font-size: 17px;
}

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

.feature-meta {
  font-size: 13px;
  color: var(--accent-tag);
  margin: 0;
}

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

.rank-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.rank-list-wrap {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 8px 4px;
  box-shadow: var(--shadow-card);
}

.rank-list {
  counter-reset: rank;
}

.rank-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
}

.rank-row:last-child {
  border-bottom: 0;
}

.rank-no {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-route);
}

.rank-name {
  font-weight: 600;
  min-width: 0;
}

.rank-note {
  font-size: 13px;
  color: var(--ink-faint);
  text-align: right;
}

.rank-terms {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  box-shadow: var(--shadow-card);
}

.terms-title {
  font-size: 16px;
  margin-bottom: 12px;
}

.terms-list {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  font-size: 14px;
}

.term-key {
  font-weight: 700;
  color: var(--ink-main);
  white-space: nowrap;
}

.term-val {
  color: var(--ink-soft);
  min-width: 0;
}

.terms-more {
  margin-top: 14px;
  font-size: 14px;
}

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

.guide-step {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-card);
}

.step-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--accent-route);
  border-radius: var(--radius-card);
  padding: 3px 8px;
  align-self: flex-start;
}

.step-name {
  font-size: 16px;
}

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

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

.index-nav {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 20px 22px;
  box-shadow: var(--shadow-card);
}

.index-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

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

.index-link {
  font-weight: 700;
  font-size: 15px;
}

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

/* ===== pages : tema ===== */

.section-tema-conclusion .section-title,
.section-tema-table .section-title,
.section-tema-detail .section-title,
.section-tema-status .section-title,
.section-tema-paths .section-title {
  margin-bottom: 14px;
}

.section-tema-conclusion p {
  max-width: var(--wrap-text);
  color: var(--ink-soft);
}

.tema-table thead th:first-child,
.tema-table tbody th {
  width: 140px;
}

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

.tema-block {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-card);
}

.tema-block-title {
  font-size: 17px;
}

.tema-cover {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-soft);
}

.tema-cover figcaption {
  font-size: 13px;
  color: var(--ink-faint);
  padding: 8px 2px 0;
}

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

.tema-point-list {
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.tema-point-list li {
  padding-left: 16px;
  position: relative;
}

.tema-point-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-tag);
}

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

.status-note {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 16px 18px;
  box-shadow: var(--shadow-card);
}

.status-note-title {
  font-size: 16px;
  margin-bottom: 8px;
}

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

.path-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.path-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--accent-route);
  border-radius: var(--radius-pill);
  color: var(--accent-route-dark);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}

.path-link:hover,
.path-link:focus {
  background-color: var(--accent-route);
  color: #FFFFFF;
  text-decoration: none;
}

.section-tail {
  margin-top: 16px;
  font-size: 14px;
}

/* ===== pages : gengxin ===== */

.section-intro .intro-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 24px;
  align-items: start;
}

.intro-figure {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-soft);
}

.intro-figure figcaption {
  font-size: 13px;
  color: var(--ink-faint);
  padding: 8px 2px 0;
}

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

.section-batches .batch-block {
  margin-bottom: 18px;
}

.section-batches .batch-block:last-child {
  margin-bottom: 0;
}

.batch-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.batch-code {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-route);
  background-color: #E1EDE7;
  border-radius: var(--radius-card);
  padding: 2px 8px;
  margin: 0;
}

.batch-title {
  font-size: 17px;
}

.section-batches .batch-note {
  margin-bottom: 14px;
}

.section-batches .batch-list {
  gap: 12px;
}

.section-batches .batch-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 12px;
}

.batch-cover {
  aspect-ratio: 3 / 4;
  border: 1px solid var(--line-soft);
}

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

.batch-item-name {
  font-weight: 700;
  margin: 0;
}

.batch-item-meta {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

.batch-item-progress {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-route-dark);
  margin: 0;
}

.glossary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
}

.glossary-item {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 14px 16px;
}

.glossary-term {
  font-weight: 700;
  margin-bottom: 6px;
}

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

.next-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.next-card {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-card);
}

.next-card-title {
  font-size: 17px;
}

.next-card-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

.next-link {
  font-weight: 600;
  font-size: 14px;
  margin-top: auto;
}

/* ===== pages : wanjie ===== */

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

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

.work-card:hover,
.work-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--accent-route);
}

.work-cover {
  aspect-ratio: 3 / 4;
  border-radius: 0;
}

.work-meta {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.work-name {
  font-size: 16px;
}

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
}

.work-tags .tag {
  margin-right: 0;
}

.work-note {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

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

.field-list {
  display: grid;
  gap: 12px;
}

.field-item {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 14px 16px;
}

.field-term {
  font-weight: 700;
  margin-bottom: 6px;
}

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

.step-list {
  display: grid;
  gap: 14px;
}

.step-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 16px 18px;
  box-shadow: var(--shadow-card);
}

.step-index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--accent-route);
  border-radius: var(--radius-card);
  padding: 4px 0;
  text-align: center;
}

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

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

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

.path-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.path-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  color: var(--ink-main);
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.path-card:hover,
.path-card:focus {
  transform: translateY(-2px);
  border-color: var(--accent-route);
  text-decoration: none;
  color: var(--ink-main);
}

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

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

.related-links {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.related-links-label {
  color: var(--ink-faint);
}

.related-links-item {
  font-weight: 600;
}

/* ===== pages : zhiyin ===== */

.guide-figure {
  aspect-ratio: 16 / 6;
  border: 1px solid var(--line-soft);
  margin-bottom: 34px;
}

.guide-figure figcaption {
  font-size: 13px;
  color: var(--ink-faint);
  padding: 8px 2px 0;
}

.guide-section {
  margin-bottom: 44px;
}

.guide-section .section-title {
  margin-bottom: 12px;
}

.section-intro {
  max-width: var(--wrap-text);
  color: var(--ink-soft);
  font-size: 15px;
}

.section-intro a {
  font-weight: 600;
}

.guide-section .step-list {
  margin-top: 16px;
}

.guide-section .step-item {
  box-shadow: none;
}

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

.field-row:last-child {
  border-bottom: 0;
}

.field-row .field-term {
  margin: 0;
}

.field-row .field-desc {
  margin: 0;
}

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}

.link-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background-color: var(--bg-card);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}

.link-list a:hover,
.link-list a:focus {
  border-color: var(--accent-route);
  text-decoration: none;
}

.boundary-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-soft);
}

.boundary-item {
  padding-left: 18px;
  position: relative;
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  background-color: var(--accent-tag);
}

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

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 4px 18px;
  box-shadow: var(--shadow-card);
}

.faq-question {
  cursor: pointer;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 28px 14px 0;
  list-style: none;
  position: relative;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 14px;
  font-size: 18px;
  font-weight: 400;
  color: var(--accent-route);
}

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

.faq-answer {
  padding: 0 0 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.faq-answer p {
  margin: 0;
}

/* ===== pages : 404 ===== */

.error-main {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 60px 24px 80px;
}

.error-panel {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background-color: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  padding: 40px 28px;
  box-shadow: var(--shadow-card);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  color: var(--accent-route);
  margin: 0 0 8px;
}

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

.error-text {
  color: var(--ink-soft);
  font-size: 15px;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.btn-primary,
.btn-plain {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent-route);
  color: #FFFFFF;
  border: 1px solid var(--accent-route);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--accent-route-dark);
  border-color: var(--accent-route-dark);
  color: #FFFFFF;
  text-decoration: none;
}

.btn-plain {
  background-color: var(--bg-card);
  color: var(--ink-main);
  border: 1px solid var(--line-soft);
}

.btn-plain:hover,
.btn-plain:focus {
  border-color: var(--accent-route);
  color: var(--accent-route-dark);
  text-decoration: none;
}

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

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

@media (max-width: 1024px) {
  .tema-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-list,
  .update-batches,
  .guide-steps,
  .status-note-grid,
  .work-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

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

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

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

  .nav-link {
    justify-content: flex-start;
    border-radius: var(--radius-card);
    padding: 0 12px;
  }

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

  .hero-title {
    font-size: 27px;
  }

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

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

  .tema-block-grid,
  .glossary-list,
  .next-grid,
  .path-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .footer-brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 560px) {
  .fact-bar {
    padding: 8px 16px;
    font-size: 12px;
    text-align: left;
  }

  .header-inner {
    padding: 8px 16px;
  }

  .hero-guide,
  .inner-main,
  .footer-inner,
  .footer-bottom,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-title {
    font-size: 23px;
  }

  .page-title {
    font-size: 23px;
  }

  .section-title {
    font-size: 19px;
  }

  .tema-grid,
  .feature-list,
  .update-batches,
  .guide-steps,
  .status-note-grid,
  .work-grid,
  .index-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .rank-row {
    grid-template-columns: 40px minmax(0, 1fr);
    row-gap: 4px;
  }

  .rank-note {
    grid-column: 2 / -1;
    text-align: left;
  }

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

  .term-key {
    margin-top: 8px;
  }

  .section-batches .batch-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
  }

  .step-item {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
    padding: 14px;
  }

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

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

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

  .error-panel {
    padding: 28px 18px;
  }

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