/* ==========================================================================
   51吃瓜娜娜 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --ink: #11213a;
  --ink-soft: #2c3d58;
  --paper: #f5f2ea;
  --card: #ffffff;
  --accent: #d9542b;
  --data: #1d6f7a;
  --line: #d9d3c6;
  --line-strong: #b9b1a1;
  --muted: #5f6a7c;
  --radius: 6px;
  --shadow-soft: 0 1px 2px rgba(17, 33, 58, 0.06);
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
}

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

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

body.site-body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}

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

p {
  margin: 0 0 14px;
}

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

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

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

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

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

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

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* ==========================================================================
   layout · 全站骨架（页头 / 主容器 / 面包屑 / 页脚）
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ink);
  color: #ffffff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;
}

.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  height: 64px;
  font-size: 19px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.brand:hover,
.brand:focus-visible {
  color: #ffffff;
}

.brand::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--accent);
  border-radius: 2px;
}

.main-nav.site-nav {
  flex: 0 1 auto;
  margin-left: 8px;
}

.tool-nav {
  flex: 0 0 auto;
  margin-left: auto;
}

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
  border-radius: var(--radius);
  white-space: nowrap;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.09);
}

.nav-list a.is-current {
  color: #ffffff;
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--accent);
}

.tool-nav .nav-list a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border-radius: var(--radius);
  position: relative;
  flex: 0 0 auto;
}

.menu-toggle::before,
.menu-toggle::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: #ffffff;
  transition: transform 0.2s ease, top 0.2s ease, opacity 0.2s ease;
}

.menu-toggle::before {
  top: 16px;
  box-shadow: 0 6px 0 #ffffff;
}

.menu-toggle::after {
  top: 28px;
}

.menu-toggle[aria-expanded="true"]::before {
  top: 21px;
  box-shadow: none;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"]::after {
  top: 21px;
  transform: rotate(-45deg);
}

.mobile-drawer {
  display: none;
  background: var(--ink);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 24px 20px;
}

.mobile-drawer[hidden] {
  display: none;
}

.mobile-drawer nav + nav {
  margin-top: 14px;
}

.drawer-group-title {
  margin: 10px 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.5);
}

.drawer-list li {
  display: block;
}

.drawer-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.86);
  border-radius: var(--radius);
}

.drawer-list a:hover,
.drawer-list a:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.09);
}

.drawer-list a.is-current {
  color: #ffffff;
  font-weight: 700;
  background: rgba(217, 84, 43, 0.22);
}

.site-main {
  display: block;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 56px;
}

.home-main {
  max-width: 1200px;
}

.inner-main {
  max-width: 1120px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--muted);
}

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

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

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

.page-header {
  margin-bottom: 18px;
}

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

/* 页脚 */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  margin-top: 32px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-logo {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.footer-intro {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.62);
}

.footer-col-title {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.55);
}

.footer-list li {
  display: block;
}

.footer-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.82);
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px 24px 28px;
  max-width: 1120px;
  margin: 0 auto;
}

.footer-principle {
  margin: 0 0 6px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

.footer-copy {
  margin: 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   components · 通用模块（章节标题 / 卡片 / 字段行 / 按钮 / 标签 / 时间轴）
   ========================================================================== */

.section-block {
  margin-top: 48px;
}

.section-head {
  margin-bottom: 20px;
}

.section-num,
.chapter-num,
.chapter-no,
.section-index {
  display: inline-block;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
}

.section-head h2,
.section-block .section-head h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
}

.section-desc,
.section-note,
.section-lead {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.text-link::after {
  content: "→";
  font-size: 14px;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #b8451f;
  border-color: #b8451f;
  color: #ffffff;
}

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

.btn-outline:hover,
.btn-outline:focus-visible {
  border-color: var(--ink);
  color: var(--ink);
  background: rgba(17, 33, 58, 0.05);
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--data);
  background: rgba(29, 111, 122, 0.1);
  border-radius: 4px;
}

.tag-status {
  color: var(--accent);
  background: rgba(217, 84, 43, 0.12);
}

/* 字段行通用 */
.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
}

.field-item,
.field-line,
.field-row dt,
.field-row dd {
  margin: 0;
}

.field-row dt,
.field-name {
  font-size: 13px;
  color: var(--muted);
  font-weight: 400;
}

.field-row dd,
.field-value {
  font-size: 14px;
  color: var(--ink);
  font-weight: 700;
  font-family: var(--font-mono);
}

.field-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.field-item dt {
  font-size: 13px;
  color: var(--muted);
}

.field-item dd {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  font-family: var(--font-mono);
}

/* 状态条（首页 + 日历页共用） */
.status-bar {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.status-dot,
.status-flag {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(217, 84, 43, 0.16);
}

.status-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  flex: 1 1 auto;
  min-width: 0;
}

.status-bar .text-link {
  flex: 0 0 auto;
  align-self: center;
}

/* 时间轴（首页摘要 + 日历页） */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.timeline-row,
.timeline-day {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.timeline-row:last-child,
.timeline-day:last-child {
  border-bottom: 0;
}

.timeline-date {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.timeline-slot,
.timeline-weekday {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--data);
}

.timeline-items,
.timeline-entries {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.timeline-item,
.entry-block {
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.timeline-item-name,
.entry-name {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.timeline-item-meta,
.entry-meta {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.entry-slot {
  margin: 0 0 4px;
  font-size: 12px;
  font-weight: 700;
  color: var(--data);
  letter-spacing: 0.06em;
}

.timeline-more {
  margin: 14px 0 0;
}

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

.genre-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.genre-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.genre-no,
.genre-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.genre-name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.genre-scope {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.genre-field,
.genre-field .field-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.genre-field .field-row {
  flex-direction: row;
  justify-content: space-between;
  gap: 10px;
  padding: 0;
  border-top: 0;
}

.genre-mini-list {
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

/* 封面卡（首页封面墙 + 作品页） */
.cover-grid,
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cover-card,
.work-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.cover-card:hover,
.work-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.cover-figure,
.work-cover {
  margin: 0;
  aspect-ratio: 3 / 4;
  border-radius: 4px;
  overflow: hidden;
  background: #ece7dc;
}

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

.cover-name,
.work-name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.cover-tags,
.work-tag {
  margin: 0;
  font-size: 13px;
  color: var(--data);
}

.work-status {
  margin: 0;
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
}

.work-progress {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  font-family: var(--font-mono);
}

.cover-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.work-link {
  margin-top: 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.work-link:hover,
.work-link:focus-visible {
  color: var(--ink);
}

/* 榜单行（首页摘要 + 榜单页） */
.rank-list,
.ranking-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.rank-row,
.ranking-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

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

.rank-num,
.ranking-no {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}

.rank-body,
.ranking-item-body {
  min-width: 0;
}

.rank-name,
.ranking-item-name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.rank-reason,
.ranking-item-reason {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.ranking-item-links {
  margin: 6px 0 0;
  font-size: 13px;
}

/* 入口卡 */
.entry-cards,
.entry-card-row,
.entry-grid {
  display: grid;
  gap: 16px;
}

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

.entry-card-row {
  grid-template-columns: repeat(3, 1fr);
}

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

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.entry-card:hover,
.entry-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.entry-card-title,
.entry-card .entry-name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.entry-card-desc,
.entry-card .entry-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.entry-card-link {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

/* 相关内容条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 32px;
  padding: 14px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
}

.related-links-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.related-links-item {
  color: var(--data);
  font-weight: 700;
}

.related-links-item:hover,
.related-links-item:focus-visible {
  color: var(--accent);
}

/* 折叠项 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--accent);
}

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

.faq-answer {
  padding: 14px 18px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.faq-answer a {
  text-decoration: underline;
}

/* 定义列表（说明页） */
.definition-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.definition-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

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

.definition-row dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.definition-row dd {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 步骤流程 */
.step-flow,
.order-steps {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
}

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

.step-no {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.step-item h3,
.order-step h3,
.step-name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.step-item p,
.order-step p,
.step-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 注意事项清单 */
.note-list {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, 1fr);
}

.note-item {
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--data);
  border-radius: var(--radius);
}

.note-item h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.note-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 图片容器 */
.genre-figure,
.notes-figure,
.guide-figure,
.section-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}

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

.genre-figure figcaption,
.notes-figure figcaption,
.guide-figure figcaption,
.section-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ==========================================================================
   pages · 首页
   ========================================================================== */

.hero-section {
  margin-bottom: 8px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 20px;
  align-items: stretch;
}

.hero-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.hero-figure {
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
  background: #ece7dc;
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  height: auto;
}

.hero-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.hero-card h1 {
  font-size: 34px;
  line-height: 1.25;
  margin: 0;
  color: var(--ink);
}

.hero-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  flex: 1 1 auto;
}

.info-card-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.info-card-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}

.info-card-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.guide-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.guide-notes-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.guide-entries {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.section-more {
  margin: 16px 0 0;
}

/* ==========================================================================
   pages · 内页通用（作品 / 题材 / 日历 / 榜单 / 说明 / 反馈）
   ========================================================================== */

.page-hero,
.page-head,
.page-title-block {
  margin-bottom: 32px;
  padding: 22px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-lead,
.page-lede {
  margin: 8px 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

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

.meta-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}

.meta-row dt {
  flex: 0 0 140px;
  font-size: 13px;
  color: var(--muted);
}

.meta-row dd {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.field-row-list,
.field-rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.field-row-list .field-row,
.field-rows .field-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}

/* 作品条目页 */
.field-legend {
  margin-bottom: 32px;
}

.legend-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 14px;
}

.legend-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.legend-key {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.legend-val {
  font-size: 13px;
  color: var(--muted);
}

.filter-bar {
  margin-bottom: 32px;
}

.filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.filter-list li {
  display: block;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.filter-btn:hover,
.filter-btn:focus-visible {
  border-color: var(--line-strong);
  color: var(--ink);
}

.filter-btn.is-active {
  background: var(--ink);
  color: #ffffff;
  border-color: var(--ink);
}

.filter-reset {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  background: transparent;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
}

.filter-reset:hover,
.filter-reset:focus-visible {
  border-color: var(--accent);
}

.filter-undo {
  margin: 12px 0 0;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink);
  background: rgba(217, 84, 43, 0.1);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
}

.works-grid-section {
  margin-bottom: 32px;
}

.next-entries {
  margin-bottom: 8px;
}

/* 题材分区页 */
.overview-bar {
  margin-bottom: 32px;
  padding: 20px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--data);
  border-radius: var(--radius);
}

.overview-bar h2 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.overview-bar p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.genre-section,
.compare-section,
.entry-section,
.related-section {
  margin-bottom: 40px;
}

.compare-table {
  margin-top: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.compare-table caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--muted);
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.compare-table th,
.compare-table td {
  padding: 12px 16px;
  font-size: 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.compare-table thead th {
  background: rgba(17, 33, 58, 0.04);
  font-weight: 700;
  color: var(--ink);
}

.compare-table tbody th {
  font-weight: 700;
  color: var(--ink);
  width: 22%;
}

.compare-table tbody td {
  color: var(--muted);
}

.compare-table tr:last-child th,
.compare-table tr:last-child td {
  border-bottom: 0;
}

.entry-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  counter-reset: entrystep;
}

.entry-item {
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  counter-increment: entrystep;
}

.entry-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.entry-item h3::before {
  content: counter(entrystep, decimal-leading-zero);
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.entry-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

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

.related-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-card h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.related-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.related-card:hover,
.related-card:focus-visible {
  border-color: var(--line-strong);
}

/* 更新日历页 */
.update-status,
.update-timeline,
.calendar-notes {
  margin-bottom: 40px;
}

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

.status-headline {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.status-bar .status-fields {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.status-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.status-link {
  margin: 10px 0 0;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.timeline-scale {
  min-width: 0;
}

.timeline-entries {
  min-width: 0;
}

.notes-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 16px;
}

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

.notes-col-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.notes-col .field-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.notes-col .field-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}

.notes-rules {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.notes-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 16px 0 0;
  font-size: 14px;
}

/* 年度读本榜页 */
.ranking-top,
.ranking-list-block,
.ranking-notes,
.ranking-basis {
  margin-bottom: 40px;
}

.ranking-top-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  align-items: start;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.ranking-top-media {
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
  background: #ece7dc;
}

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

.ranking-top-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.ranking-top-body {
  min-width: 0;
}

.ranking-top-body .field-rows {
  margin-bottom: 16px;
}

.ranking-reason h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.ranking-reason p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.ranking-top-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 14px 0 0;
  font-size: 14px;
}

.ranking-notes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.ranking-notes-col h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.ranking-notes-col > p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.notes-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.notes-points li {
  padding: 8px 0 8px 16px;
  position: relative;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.notes-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

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

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

.basis-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.basis-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 阅读与追更说明页 */
.guide-section {
  margin-bottom: 40px;
}

.guide-section .section-head {
  margin-bottom: 16px;
}

/* 问题反馈说明页 */
.issue-section,
.order-section,
.faq-section {
  margin-bottom: 40px;
}

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

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

.issue-no {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.issue-name {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.issue-desc {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.issue-card .field-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.issue-card .field-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.issue-card .field-line dt {
  font-size: 13px;
  color: var(--muted);
}

.issue-card .field-line dd {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  text-align: right;
}

/* 404 */
.error-main {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 56px;
  padding-bottom: 72px;
}

.error-panel {
  padding: 32px 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 46px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  letter-spacing: 0.04em;
}

.error-panel h1 {
  font-size: 28px;
  margin-bottom: 10px;
}

.error-text {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-actions li {
  display: block;
}

.error-btn,
.error-btn-primary {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.error-btn:hover,
.error-btn:focus-visible,
.error-btn-primary:hover,
.error-btn-primary:focus-visible {
  background: var(--ink);
  color: #ffffff;
  border-color: var(--ink);
}

.error-tips h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

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

.error-tip-list li {
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--data);
  border-radius: var(--radius);
}

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

@media (max-width: 1024px) {
  .header-inner {
    padding: 0 20px;
  }

  .main-nav.site-nav {
    display: none;
  }

  .tool-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-block;
  }

  .mobile-drawer:not([hidden]) {
    display: block;
  }

  .site-main {
    padding: 28px 20px 48px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 32px 20px 24px;
  }

  .footer-bottom {
    padding: 16px 20px 24px;
  }

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

  .hero-side {
    flex-direction: row;
  }

  .info-card {
    flex: 1 1 0;
  }

  .genre-grid,
  .cover-grid,
  .works-grid,
  .entry-cards,
  .entry-card-row,
  .step-flow,
  .order-steps,
  .basis-list,
  .related-grid,
  .entry-list,
  .error-tip-list {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .ranking-top-grid {
    grid-template-columns: 260px 1fr;
  }
}

@media (max-width: 768px) {
  body.site-body {
    font-size: 15px;
    line-height: 1.8;
  }

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

  .site-main {
    padding: 24px 16px 44px;
  }

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

  .hero-card h1 {
    font-size: 26px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 28px 16px 20px;
  }

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

  .hero-side {
    flex-direction: column;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .genre-grid,
  .cover-grid,
  .works-grid,
  .entry-cards,
  .entry-card-row,
  .entry-grid,
  .step-flow,
  .order-steps,
  .basis-list,
  .related-grid,
  .entry-list,
  .error-tip-list,
  .legend-list,
  .note-list,
  .ranking-notes-grid,
  .notes-columns,
  .guide-layout,
  .issue-grid {
    grid-template-columns: 1fr;
  }

  .timeline-row,
  .timeline-day {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 14px 16px;
  }

  .timeline-scale {
    display: flex;
    align-items: baseline;
    gap: 10px;
  }

  .timeline-slot,
  .timeline-weekday {
    margin: 0;
  }

  .status-bar {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .status-dot,
  .status-flag {
    margin-top: 0;
  }

  .status-fields {
    flex-direction: column;
    gap: 8px;
  }

  .status-bar .text-link {
    align-self: flex-start;
  }

  .status-bar .field-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }

  .rank-row,
  .ranking-item {
    grid-template-columns: 44px 1fr;
    gap: 12px;
    padding: 14px 16px;
  }

  .ranking-top-grid {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 18px;
  }

  .definition-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 14px 16px;
  }

  .meta-row {
    flex-direction: column;
    gap: 4px;
  }

  .meta-row dt {
    flex: none;
  }

  .field-row-list .field-row,
  .field-rows .field-row,
  .notes-col .field-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .compare-table,
  .compare-table thead,
  .compare-table tbody,
  .compare-table tr,
  .compare-table th,
  .compare-table td,
  .compare-table caption {
    display: block;
  }

  .compare-table thead {
    display: none;
  }

  .compare-table tr {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
  }

  .compare-table tr:last-child {
    border-bottom: 0;
  }

  .compare-table th,
  .compare-table td {
    width: auto;
    padding: 4px 0;
    border-bottom: 0;
  }

  .compare-table tbody th {
    font-size: 15px;
  }

  .compare-table caption {
    padding: 12px 16px;
  }

  .filter-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .filter-list li {
    flex: 0 0 auto;
  }

  .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .error-code {
    font-size: 38px;
  }

  .error-panel {
    padding: 24px 20px;
  }

  .error-panel h1 {
    font-size: 24px;
  }

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

  .error-btn,
  .error-btn-primary {
    justify-content: center;
  }
}

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

  .brand {
    font-size: 17px;
  }

  .hero-card,
  .info-card,
  .genre-card,
  .cover-card,
  .work-card,
  .entry-card,
  .issue-card,
  .basis-item,
  .related-card,
  .step-item,
  .order-step,
  .notes-col,
  .ranking-notes-col,
  .guide-notes,
  .page-hero,
  .page-head,
  .page-title-block,
  .overview-bar {
    padding: 16px;
  }

  .info-card-num {
    font-size: 32px;
  }

  .rank-num,
  .ranking-no {
    font-size: 18px;
  }
}