:root {
  --bg: #FBF7F2;
  --ink: #1F2A44;
  --ink-soft: #4A5568;
  --ink-mute: #6B7280;
  --accent: #FF6B4A;
  --accent-deep: #E5533A;
  --teal: #2F7D8C;
  --line: #E8DFD6;
  --card: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(31, 42, 68, 0.05);
  --shadow-md: 0 4px 14px rgba(31, 42, 68, 0.08);
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1120px;
  --gap: 24px;
}

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

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

p {
  margin: 0;
}

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

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

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

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

figure {
  margin: 0;
}

button {
  font: inherit;
  cursor: pointer;
}

time {
  font-variant-numeric: tabular-nums;
}

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

/* ============================================================
   layout — 全站骨架
   ============================================================ */

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

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 30;
}

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

.site-nav {
  position: relative;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 68px;
}

.nav-item {
  display: flex;
  align-items: center;
}

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

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

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

.nav-brand {
  flex: 0 0 auto;
  margin: 0 20px;
}

.nav-brand a {
  display: inline-block;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  padding: 6px 10px;
  border-bottom: none;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

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

.inner-main {
  padding: 24px 24px 64px;
}

.inner-main > .breadcrumb,
.inner-main > .page-header,
.inner-main > .page-layout {
  max-width: var(--wrap);
  margin-left: auto;
  margin-right: auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-mute);
  padding: 8px 0 16px;
}

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

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

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

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

.page-header {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

.page-description {
  margin-top: 12px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-layout {
  display: grid;
  gap: 56px;
  align-items: start;
}

.page-layout.layout-shell {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.page-layout:not(.layout-shell) {
  grid-template-columns: minmax(0, 1fr) 300px;
}

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

.sidebar,
.content-aside,
.side-column,
.page-aside {
  min-width: 0;
}

.sidebar-left .page-layout,
.sidebar-left .page-layout.layout-shell {
  grid-template-columns: 300px minmax(0, 1fr);
}

.sidebar-left .page-layout > .main-content,
.sidebar-left .page-layout > .content-main,
.sidebar-left .page-layout > .main-column {
  order: 2;
}

.sidebar-left .page-layout > .sidebar,
.sidebar-left .page-layout > .content-aside,
.sidebar-left .page-layout > .side-column,
.sidebar-left .page-layout > .page-aside {
  order: 1;
}

.section {
  margin-bottom: 56px;
}

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

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

.section-head {
  margin-bottom: 22px;
}

.section-head h2 {
  font-size: 22px;
  font-weight: 700;
}

.section-lead,
.section-intro {
  margin-top: 10px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.section-lead a,
.section-intro a,
.section-note a,
.feed-note a,
.boundary-note a,
.feedback-note a,
.aside-note a {
  color: var(--teal);
  border-bottom: 1px solid rgba(47, 125, 140, 0.35);
}

.section-lead a:hover,
.section-intro a:hover,
.section-note a:hover,
.feed-note a:hover,
.boundary-note a:hover,
.feedback-note a:hover,
.aside-note a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.section-more {
  margin-top: 18px;
  font-size: 14px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 600;
}

.section-more a::after {
  content: "→";
  font-size: 13px;
}

.section-note,
.feed-note,
.boundary-note,
.feedback-note,
.aside-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.7;
}

/* ============================================================
   components — 通用卡片 / 标签 / 列表
   ============================================================ */

.tag {
  display: inline-block;
  padding: 2px 9px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--teal);
  background: rgba(47, 125, 140, 0.09);
  border: 1px solid rgba(47, 125, 140, 0.22);
  border-radius: 999px;
  line-height: 1.6;
}

.tag-status {
  color: var(--accent-deep);
  background: rgba(255, 107, 74, 0.1);
  border-color: rgba(255, 107, 74, 0.28);
}

/* ============================================================
   pages — 首页 index.html
   ============================================================ */

.fact-bar {
  background: var(--ink);
  color: #F3EFE9;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-align: center;
  padding: 9px 24px;
  line-height: 1.6;
}

.home-main {
  padding-bottom: 72px;
}

/* 首屏题材工作台 */
.hero-workbench {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}

.hero-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 52px 24px 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 440px;
  gap: 48px;
  align-items: center;
}

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

.hero-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.28;
  color: var(--ink);
}

.hero-summary {
  margin-top: 18px;
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 520px;
}

.hero-paths {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-path-item {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.hero-path-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.hero-path-item a {
  font-weight: 600;
  color: var(--ink);
  font-size: 15px;
}

.hero-path-item a:hover {
  color: var(--accent);
}

.hero-path-note {
  font-size: 13px;
  color: var(--ink-mute);
}

.hero-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--line);
}

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

.hero-visual-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-mute);
  background: var(--card);
  border-top: 1px solid var(--line);
}

.hero-thumbs {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

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

/* 题材方向总览 */
.topic-overview {
  max-width: var(--wrap);
  margin: 56px auto 0;
  padding: 0 24px;
}

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

.topic-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

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

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

.topic-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.topic-scope {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.topic-scope li {
  position: relative;
  padding-left: 14px;
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
}

.topic-scope li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
}

.topic-covers {
  margin-top: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.topic-covers li {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

/* 并列区：封面条目速览 + 最近更新记录 */
.split-section {
  max-width: var(--wrap);
  margin: 56px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.entry-brief,
.update-brief {
  min-width: 0;
}

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

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

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

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

.entry-name {
  padding: 10px 12px 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
}

.entry-tags {
  padding: 0 12px 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

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

.update-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 14px;
  padding: 13px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.update-row:hover {
  background: rgba(255, 107, 74, 0.05);
}

.update-date {
  font-size: 13px;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.update-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.update-topic {
  font-size: 13px;
  color: var(--teal);
  white-space: nowrap;
}

/* 人气位次参考 + 条目字段口径摘要 */
.rank-brief,
.field-brief {
  min-width: 0;
}

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

.rank-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.rank-row:hover {
  background: rgba(47, 125, 140, 0.06);
}

.rank-num {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.rank-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

.field-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
}

.field-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.field-value {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* 查阅路径三步指引 */
.path-guide {
  max-width: var(--wrap);
  margin: 56px auto 0;
  padding: 0 24px;
}

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

.path-step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.path-step:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-sm);
}

.path-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--accent);
  border-radius: 50%;
  margin-bottom: 14px;
}

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

.path-step .step-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

/* 站内栏目索引 */
.site-index {
  max-width: var(--wrap);
  margin: 56px auto 0;
  padding: 0 24px;
}

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

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

.index-col:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.index-col a {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

.index-note {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
}

/* ============================================================
   pages — 题材分类 tema.html
   ============================================================ */

.tema-group-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tema-group {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 28px;
  align-items: start;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.tema-group:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-sm);
}

.tema-group-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 10px;
}

.tema-group-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.tema-group-tag {
  display: inline-block;
  padding: 2px 9px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--accent-deep);
  background: rgba(255, 107, 74, 0.1);
  border: 1px solid rgba(255, 107, 74, 0.26);
  border-radius: 999px;
}

.tema-group-desc {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.78;
}

.tema-scope-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.tema-scope-list li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.7;
}

.tema-scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.tema-cover {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

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

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

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

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

.pick-body {
  padding: 12px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pick-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.pick-tema {
  font-size: 13px;
  color: var(--teal);
}

.pick-status {
  font-size: 13px;
  color: var(--ink-mute);
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

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

.tips-item {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.tips-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal);
  background: rgba(47, 125, 140, 0.1);
  border-radius: 50%;
}

.tips-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.72;
}

/* 通用 FAQ 折叠（题材页与位次页共用） */
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
}

.faq-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.faq-question {
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
  position: relative;
  padding-right: 22px;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

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

.faq-answer {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

/* ============================================================
   pages — 最近更新 gengxin.html
   ============================================================ */

.update-feed {
  min-width: 0;
}

.feed-group {
  margin-bottom: 26px;
}

.feed-date {
  font-size: 15px;
  font-weight: 700;
  color: var(--teal);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}

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

.feed-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.feed-row:hover {
  background: rgba(255, 107, 74, 0.05);
}

.feed-thumb {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

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

.feed-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.feed-tags {
  margin-top: 4px;
  font-size: 13px;
  color: var(--ink-mute);
}

.feed-status {
  font-size: 13px;
  padding: 2px 9px;
  border-radius: 999px;
  white-space: nowrap;
  border: 1px solid transparent;
}

.feed-status.status-updated {
  color: var(--accent-deep);
  background: rgba(255, 107, 74, 0.1);
  border-color: rgba(255, 107, 74, 0.26);
}

.feed-status.status-new {
  color: var(--teal);
  background: rgba(47, 125, 140, 0.1);
  border-color: rgba(47, 125, 140, 0.24);
}

.feed-status.status-paused {
  color: var(--ink-mute);
  background: rgba(31, 42, 68, 0.06);
  border-color: rgba(31, 42, 68, 0.14);
}

.feed-time {
  font-size: 13px;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.batch-guide,
.reading-tips {
  margin-top: 52px;
}

.batch-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.batch-item {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.batch-term {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.batch-desc {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

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

.tip-item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.tip-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--teal);
  border-radius: 50%;
}

.tip-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.aside-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.aside-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.aside-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.aside-list-item a {
  font-size: 14px;
  color: var(--teal);
  border-bottom: 1px solid rgba(47, 125, 140, 0.3);
}

.aside-list-item a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============================================================
   pages — 人气位次 weici.html
   ============================================================ */

.rank-list .rank-row {
  grid-template-columns: 38px 56px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 12px 4px;
}

.rank-number {
  font-size: 17px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.rank-cover {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.rank-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rank-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.rank-tag {
  font-size: 13px;
  color: var(--teal);
}

.rank-state {
  font-size: 13px;
  color: var(--ink-mute);
  white-space: nowrap;
}

.scope-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.scope-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.scope-key {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.content-aside .aside-block + .aside-block {
  margin-top: 24px;
}

/* ============================================================
   pages — 条目字段说明 shuoming.html
   ============================================================ */

.content-section {
  margin-bottom: 52px;
}

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

.field-table {
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}

.field-table .field-row {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
  padding: 0;
  border-bottom: 1px solid var(--line);
}

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

.field-cell {
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.7;
  border-right: 1px solid var(--line);
}

.field-cell:last-child {
  border-right: none;
}

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

.field-row.field-head .field-cell {
  font-weight: 700;
  color: var(--ink);
  font-size: 14px;
}

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

.field-table .field-mean {
  color: var(--ink-soft);
}

.field-table .field-rule {
  color: var(--ink-mute);
}

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

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

.boundary-in {
  border-left: 3px solid var(--teal);
}

.boundary-out {
  border-left: 3px solid var(--accent);
}

.boundary-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

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

.boundary-list li {
  position: relative;
  padding-left: 15px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.72;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line);
}

.boundary-in .boundary-list li::before {
  background: var(--teal);
}

.boundary-out .boundary-list li::before {
  background: var(--accent);
}

.feedback-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feedback-step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.feedback-step:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-sm);
}

.feedback-step .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--teal);
  border-radius: 50%;
  margin-bottom: 12px;
}

.feedback-step .step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.feedback-step .step-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.side-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.side-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.card-figure {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
}

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

.card-figure-caption {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
  background: var(--card);
  border-top: 1px solid var(--line);
}

.side-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.side-list-item a {
  font-size: 14px;
  color: var(--teal);
  border-bottom: 1px solid rgba(47, 125, 140, 0.3);
}

.side-list-item a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ============================================================
   pages — 404.html
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 24px 88px;
}

.error-block {
  max-width: 620px;
  width: 100%;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px 32px;
}

.error-code {
  font-size: 56px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.error-title {
  margin-top: 16px;
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
}

.error-text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.78;
}

.error-text + .error-text {
  margin-top: 8px;
}

.error-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

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

.btn-primary:hover {
  background: var(--accent-deep);
  color: #FFFFFF;
}

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

.btn-ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ============================================================
   layout — 页脚
   ============================================================ */

.site-footer {
  background: var(--ink);
  color: #D9D5CE;
  margin-top: 72px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 28px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

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

.footer-logo {
  font-size: 19px;
  font-weight: 700;
  color: #FFFFFF;
}

.footer-desc {
  margin-top: 12px;
  font-size: 14px;
  color: #B9B4AC;
  line-height: 1.78;
  max-width: 420px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: #B9B4AC;
  padding: 2px 0;
}

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

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px 26px;
  font-size: 13px;
  color: #8E8981;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 32px;
    padding-top: 40px;
  }

  .hero-title {
    font-size: 30px;
  }

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

  .split-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
  }

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

  .page-layout,
  .page-layout.layout-shell,
  .page-layout:not(.layout-shell) {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .sidebar-left .page-layout,
  .sidebar-left .page-layout.layout-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar-left .page-layout > .main-content,
  .sidebar-left .page-layout > .content-main,
  .sidebar-left .page-layout > .main-column,
  .sidebar-left .page-layout > .sidebar,
  .sidebar-left .page-layout > .content-aside,
  .sidebar-left .page-layout > .side-column,
  .sidebar-left .page-layout > .page-aside {
    order: 0;
  }

  .tema-group {
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: 22px;
  }

  .sidebar,
  .content-aside,
  .side-column,
  .page-aside {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    align-items: start;
  }

  .content-aside .aside-block + .aside-block {
    margin-top: 0;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .site-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
  }

  .nav-toggle {
    display: inline-flex;
    order: 2;
  }

  .nav-list {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    min-height: 0;
    padding: 8px 16px 16px;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    z-index: 40;
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-item a {
    width: 100%;
    min-height: 46px;
    padding: 0 4px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .nav-item a.is-current {
    border-bottom-color: var(--accent);
  }

  .nav-brand {
    order: 1;
    margin: 0;
  }

  .nav-brand a {
    font-size: 19px;
    padding: 6px 0;
  }

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

  .breadcrumb {
    font-size: 12px;
    padding: 4px 0 12px;
  }

  .page-header {
    padding-bottom: 20px;
    margin-bottom: 28px;
  }

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

  .page-description {
    font-size: 14px;
  }

  .section {
    margin-bottom: 40px;
  }

  .section-title,
  .section-head h2 {
    font-size: 18px;
  }

  .section-lead,
  .section-intro {
    font-size: 14px;
  }

  .fact-bar {
    font-size: 12px;
    padding: 8px 16px;
    text-align: left;
  }

  .home-main {
    padding-bottom: 48px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 16px 28px;
  }

  .hero-title {
    font-size: 25px;
  }

  .hero-summary {
    margin-top: 14px;
    font-size: 15px;
  }

  .hero-paths {
    margin-top: 20px;
  }

  .hero-path-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 14px;
  }

  .hero-thumbs {
    padding: 0 16px 28px;
    gap: 12px;
  }

  .topic-overview,
  .split-section,
  .path-guide,
  .site-index {
    margin-top: 40px;
    padding: 0 16px;
  }

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

  .entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .update-row {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 10px;
  }

  .update-topic {
    grid-column: 2;
    font-size: 12px;
  }

  .rank-row {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
  }

  .rank-row .tag {
    grid-column: 2;
    justify-self: start;
  }

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

  .path-steps,
  .feedback-steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .index-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .tema-group {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding: 20px 16px;
  }

  .tema-cover {
    max-width: 200px;
  }

  .tema-pick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .sidebar,
  .content-aside,
  .side-column,
  .page-aside {
    grid-template-columns: minmax(0, 1fr);
  }

  .feed-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 12px;
    align-items: start;
  }

  .feed-status,
  .feed-time {
    grid-column: 2;
    justify-self: start;
  }

  .feed-status {
    margin-top: 4px;
  }

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

  .rank-list .rank-row {
    grid-template-columns: 32px 48px minmax(0, 1fr);
    gap: 12px;
  }

  .rank-state {
    grid-column: 3;
    justify-self: start;
    margin-top: 2px;
  }

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

  .field-cell {
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 12px 14px;
  }

  .field-table .field-row .field-cell:last-child {
    border-bottom: none;
  }

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

  .boundary-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .error-main {
    padding: 48px 16px 56px;
  }

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

  .error-code {
    font-size: 44px;
  }

  .error-title {
    font-size: 20px;
  }

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

  .btn {
    width: 100%;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 16px 20px;
  }

  .footer-desc {
    max-width: none;
  }

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

  .footer-copy {
    padding: 14px 16px 22px;
  }
}