/* ==========================================================================
   榴莲官网 chenssb.com — 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base — 变量、重置、排版基础
   ========================================================================== */

:root {
  --ink: #111513;
  --paper: #f4f0df;
  --lime: #c9f36b;
  --olive: #7a8c5e;
  --amber: #e8a531;
  --sand: #d8d4c2;
  --ink-soft: #2c332e;
  --paper-deep: #ece7d2;
  --line: #c9c4ae;
  --shadow-sm: 0 1px 2px rgba(17, 21, 19, 0.08);
  --shadow-md: 0 6px 20px rgba(17, 21, 19, 0.12);
  --shell: 1200px;
  --gutter: 32px;
  --radius: 6px;
  --radius-sm: 4px;
}

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

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

body,
h1, h2, h3, h4,
p, figure, blockquote,
dl, dd, ol, ul {
  margin: 0;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  background: var(--paper);
}

body.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.site-body a {
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.site-body a:focus-visible,
.site-body button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.24;
}

p {
  color: var(--ink-soft);
}

::selection {
  background: var(--lime);
  color: var(--ink);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   layout — 页头、主导航、移动导航、主容器、页脚
   ========================================================================== */

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid rgba(244, 240, 223, 0.14);
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.brand-slogan {
  font-size: 12px;
  line-height: 1.4;
  color: var(--olive);
  letter-spacing: 0.04em;
}

.brand-mark:hover .brand-name {
  color: var(--lime);
}

/* 主导航 */
.main-nav {
  margin-left: auto;
}

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

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--paper);
  border-radius: var(--radius-sm);
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--lime);
  background: rgba(201, 243, 107, 0.08);
}

.nav-list a.is-current {
  color: var(--ink);
  background: var(--lime);
  border-bottom-color: var(--lime);
}

.nav-list a.is-current:hover {
  color: var(--ink);
  background: var(--lime);
}

/* 移动菜单按钮 */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(244, 240, 223, 0.28);
}

.menu-toggle:hover {
  border-color: var(--lime);
}

.menu-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--paper);
  border-radius: 1px;
}

/* 移动导航面板 */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--ink);
  color: var(--paper);
  padding: 24px var(--gutter) 40px;
  overflow-y: auto;
}

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

.menu-close {
  display: block;
  margin-left: auto;
  width: 44px;
  height: 44px;
  font-size: 26px;
  line-height: 1;
  color: var(--paper);
  border: 1px solid rgba(244, 240, 223, 0.28);
  border-radius: var(--radius-sm);
}

.menu-close::before {
  content: "×";
}

.menu-close:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.mobile-nav-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-list a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 0 16px;
  font-size: 17px;
  color: var(--paper);
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  background: rgba(244, 240, 223, 0.05);
}

.mobile-nav-list a:hover,
.mobile-nav-list a:focus-visible {
  border-left-color: var(--lime);
  color: var(--lime);
}

.mobile-nav-list a.is-current {
  background: var(--lime);
  color: var(--ink);
  border-left-color: var(--ink);
}

/* 主容器 */
.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.home-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) 64px;
}

.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) 72px;
}

/* 面包屑 */
.breadcrumb {
  margin: 20px 0 18px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--olive);
}

.breadcrumb a {
  display: inline-block;
  min-height: 24px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.breadcrumb a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--olive);
}

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

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--olive);
}

.breadcrumb-list li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--olive);
}

.breadcrumb-list a {
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.breadcrumb-list a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* 页标题区 */
.page-title {
  margin: 0 0 28px;
  padding: 26px 0 24px;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-index {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.page-kicker {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink);
  background: var(--lime);
  border-radius: var(--radius-sm);
}

.page-title .page-title,
.page-title h1,
.page-header .page-title {
  margin: 12px 0 14px;
  font-size: 44px;
  font-weight: 800;
  line-height: 1.14;
  color: var(--ink);
}

.page-lead {
  max-width: 760px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.title-tags,
.page-tags,
.struct-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.title-tags li,
.page-tags li,
.struct-tags li {
  padding: 4px 12px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: 999px;
}

/* 页脚 */
.site-footer {
  flex-shrink: 0;
  margin-top: auto;
  background: var(--ink);
  color: var(--paper);
  border-top: 1px solid rgba(244, 240, 223, 0.14);
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 52px var(--gutter) 36px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
}

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

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.footer-brand-desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 240, 223, 0.72);
}

.footer-top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 12px;
  font-size: 14px;
  color: var(--lime);
  border-bottom: 1px solid transparent;
}

.footer-top::after {
  content: "↑";
  margin-left: 6px;
}

.footer-top:hover {
  border-bottom-color: var(--lime);
}

.footer-col-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--olive);
  text-transform: uppercase;
}

.footer-links {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  line-height: 1.5;
  color: rgba(244, 240, 223, 0.86);
  word-break: break-word;
  border-bottom: 1px solid transparent;
}

.footer-links a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.footer-bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px var(--gutter) 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  border-top: 1px solid rgba(244, 240, 223, 0.14);
}

.footer-copy,
.footer-note {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 240, 223, 0.6);
}

/* ==========================================================================
   components — 按钮、区块标题、通用列表与卡片
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.16s ease, background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.btn-primary {
  background: var(--lime);
  color: var(--ink);
  border-color: var(--lime);
}

.btn-primary:hover {
  background: var(--ink);
  color: var(--lime);
  border-color: var(--ink);
}

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

.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.24;
  color: var(--ink);
}

.section-lead {
  margin-top: 10px;
  max-width: 760px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.section-intro,
.block-intro {
  margin: 10px 0 20px;
  max-width: 720px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.section-note {
  margin-top: 20px;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  background: var(--paper-deep);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.section-note a {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 1px solid var(--amber);
}

.section-note a:hover {
  color: var(--olive);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.link-arrow::after {
  content: "→";
  margin-left: 6px;
}

.link-arrow:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* figure 与图片统一约束 */
figure {
  margin: 0;
}

.hero-figure,
.curation-figure,
.channel-figure,
.theme-visual,
.content-figure,
.section-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-deep);
  border: 1px solid var(--line);
}

.hero-figure img,
.curation-figure img,
.channel-figure img,
.theme-visual img,
.content-figure img,
.section-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

figcaption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.hero-figure figcaption,
.curation-figure figcaption,
.channel-figure figcaption,
.theme-visual figcaption,
.content-figure figcaption,
.section-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

/* 内页统一双栏布局：主内容在前，aside 在后 */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 780px) minmax(0, 300px);
  gap: 60px;
  align-items: start;
}

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

.content-aside {
  min-width: 0;
  font-size: 14px;
}

.aside-sticky,
.aside-inner {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-toc,
.aside-links,
.aside-related {
  padding: 18px 18px 16px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-title,
.toc-title,
.aside-links-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--olive);
}

.toc-list,
.aside-link-list,
.related-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toc-list a,
.aside-link-list a,
.related-list a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.toc-list a:hover,
.aside-link-list a:hover,
.related-list a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.aside-top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.aside-top::after {
  content: "↑";
  margin-left: 6px;
}

.aside-top:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* 内页概览带 */
.overview-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 40px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.overview-cell {
  min-width: 0;
  padding: 18px 20px;
  background: var(--paper-deep);
}

.overview-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--olive);
  text-transform: uppercase;
}

.overview-text,
.overview-value {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.overview-value {
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.overview-note {
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 内页正文区块通用 */
.content-section,
.content-block,
.theme-section,
.sequence-section,
.label-section,
.update-section,
.boundary-pair,
.terminology,
.citation-rules,
.boundary-log {
  padding: 32px 0;
  border-top: 1px solid var(--line);
}

.content-section:first-of-type,
.content-block:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.content-section h2,
.content-block h2,
.theme-section h2,
.sequence-section h2,
.label-section h2,
.update-section h2,
.boundary-pair h2,
.terminology h2,
.citation-rules h2,
.boundary-log h2 {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.28;
  color: var(--ink);
}

.content-section > p,
.content-block > p,
.boundary-pair > p,
.terminology > p,
.citation-rules > p,
.boundary-log > p {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ==========================================================================
   pages — 首页
   ========================================================================== */

/* 首屏 */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 48px;
  align-items: stretch;
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.kicker {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink);
  background: var(--lime);
  border-radius: 999px;
}

.hero h1 {
  margin: 18px 0 18px;
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--ink);
}

.hero-lead {
  max-width: 460px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.hero-visual {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-figure {
  aspect-ratio: 16 / 10;
}

.hero-guides {
  padding: 16px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.hero-guides-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--olive);
}

.hero-guide-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-guide-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
}

.hero-guide-list li:first-child {
  border-top: 0;
}

.hero-guide-list a {
  flex: 1 1 220px;
  min-height: 24px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.hero-guide-list a:hover {
  color: var(--olive);
}

.guide-meta {
  flex: 0 0 auto;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

/* 观看任务台 */
.task-desk {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.task-side {
  min-width: 0;
  padding: 22px 22px 24px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
}

.aside-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.task-side .aside-title {
  color: var(--paper);
}

.aside-subtitle {
  margin-top: 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lime);
}

.quick-list,
.task-nav-list {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.quick-list a,
.task-nav-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 10px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(244, 240, 223, 0.9);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  background: rgba(244, 240, 223, 0.05);
}

.quick-list a:hover,
.task-nav-list a:hover {
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(201, 243, 107, 0.1);
}

.site-brief {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(244, 240, 223, 0.2);
}

.site-brief p {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 240, 223, 0.7);
}

.site-brief p + p {
  margin-top: 8px;
}

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

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

.channel-block {
  min-width: 0;
  padding: 20px 20px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.channel-block:hover {
  transform: translateY(-2px);
  border-color: var(--ink);
  box-shadow: var(--shadow-md);
}

.channel-no {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.channel-name {
  margin-top: 4px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

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

.channel-tags {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.channel-tags li {
  padding: 2px 9px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.channel-link::after {
  content: "→";
  margin-left: 6px;
}

.channel-link:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* 策展专题错位带 */
.curation-strips {
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.curation-figure {
  margin-top: 24px;
  aspect-ratio: 21 / 8;
}

.strip-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.strip-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 22px 24px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.strip-item:hover {
  transform: translateX(3px);
  border-color: var(--ink);
}

.strip-item.strip-reverse {
  background: var(--paper);
}

.strip-no {
  display: block;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

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

.strip-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.strip-desc {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.strip-structure {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--olive);
}

.strip-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.strip-link::after {
  content: "→";
  margin-left: 6px;
}

.strip-link:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* 指南与整理记录 */
.guide-log {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.guide-col,
.log-col {
  min-width: 0;
}

.guide-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.guide-item {
  padding: 18px 20px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.guide-title-line {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}

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

.guide-title-line a:hover {
  color: var(--olive);
}

.guide-desc {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.guide-tag {
  display: inline-block;
  margin-top: 10px;
  padding: 2px 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.log-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.log-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 96px 72px;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.6;
  border-bottom: 1px solid var(--line);
}

.log-no {
  font-weight: 700;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.log-page {
  min-width: 0;
  color: var(--ink);
  font-weight: 600;
}

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

.log-status {
  justify-self: start;
  padding: 1px 8px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--lime);
  border-radius: 999px;
}

.log-more {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.log-more::after {
  content: "→";
  margin-left: 6px;
}

.log-more:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* 路线与核对合并条 */
.route-check {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.route-side,
.check-side {
  min-width: 0;
}

.route-desc {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.route-tags {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.route-tag {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 16px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.route-tag-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.route-tag-desc {
  flex: 1 1 200px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.route-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.route-link::after {
  content: "→";
  margin-left: 6px;
}

.route-link:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

.check-steps {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.check-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.check-no {
  flex: 0 0 auto;
  min-width: 28px;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.7;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.check-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.check-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.check-link::after {
  content: "→";
  margin-left: 6px;
}

.check-link:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* 边界提示与更正入口 */
.boundary-cta {
  padding: 64px 0 0;
}

.boundary-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.boundary-item {
  min-width: 0;
  padding: 22px 20px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-top: 3px solid var(--amber);
  border-radius: 0 0 var(--radius) var(--radius);
}

.boundary-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.boundary-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.boundary-cta-bar {
  margin-top: 24px;
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  background: var(--ink);
  border-radius: var(--radius);
}

.boundary-cta-text {
  flex: 1 1 320px;
  min-width: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 240, 223, 0.9);
}

.boundary-cta-bar .btn-primary:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

/* 相关内容条 */
.related-links {
  margin-top: 40px;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--olive);
}

.related-links-item {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--ink);
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.related-links-item:hover {
  border-color: var(--ink);
  color: var(--olive);
}

/* ==========================================================================
   pages — 频道索引
   ========================================================================== */

.channel-figure {
  margin: 20px 0 24px;
  aspect-ratio: 21 / 9;
}

.channel-card {
  min-width: 0;
  padding: 20px 20px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

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

.channel-num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.channel-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

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

.route-item {
  min-width: 0;
  padding: 18px 20px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.route-name {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.route-fit {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.route-channels {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.choice-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.choice-row {
  display: grid;
  grid-template-columns: minmax(140px, 0.8fr) minmax(0, 1.6fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.choice-row dt {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
}

.choice-row dd {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ==========================================================================
   pages — 策展笔记
   ========================================================================== */

.theme-visual {
  margin: 20px 0 24px;
  aspect-ratio: 21 / 9;
}

.theme-strips {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.theme-strip {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 20px 22px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.theme-strip-reverse {
  background: var(--paper);
  border-left: 3px solid var(--lime);
}

.theme-strip .strip-no {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.1;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.theme-strip .strip-title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.theme-strip .strip-desc {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.strip-hint {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.strip-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 2px solid var(--lime);
}

.strip-link::after {
  content: "→";
  margin-left: 6px;
}

.strip-link:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

.sequence-timeline {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--line);
}

.timeline-step {
  position: relative;
  min-width: 0;
  padding: 0 0 24px 26px;
}

.timeline-step:last-child {
  padding-bottom: 0;
}

.timeline-step::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--lime);
  border: 2px solid var(--ink);
  border-radius: 50%;
}

.timeline-step .step-no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.timeline-step .step-title {
  margin-top: 2px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.timeline-step .step-desc {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.timeline-step .step-pace {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.label-guide {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.label-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.7fr) minmax(0, 1.8fr);
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.label-row dt {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
}

.label-row dd {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.update-notes {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.update-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 96px;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.update-no {
  font-size: 13px;
  font-weight: 700;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.update-body {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.update-type {
  justify-self: start;
  padding: 1px 8px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.boundary-note {
  margin-top: 20px;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  background: var(--paper-deep);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.boundary-note a {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 1px solid var(--amber);
}

.boundary-note a:hover {
  color: var(--olive);
}

/* ==========================================================================
   pages — 观看路线
   ========================================================================== */

.route-steps {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.route-step {
  min-width: 0;
  padding: 20px 20px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lime);
  border-radius: 0 0 var(--radius) var(--radius);
}

.route-num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.route-step .route-name {
  margin-top: 2px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

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

.route-flow {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.route-note {
  margin-top: 8px;
  padding-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
}

.content-figure {
  margin: 20px 0 24px;
  aspect-ratio: 21 / 9;
}

.prep-checklist {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.prep-item {
  min-width: 0;
  padding: 16px 16px 14px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.prep-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

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

.prep-standard {
  margin-top: 8px;
  padding-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
  border-top: 1px dashed var(--line);
}

.bridge-steps {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bridge-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 6px 18px;
  align-items: start;
  padding: 16px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.bridge-num {
  grid-row: 1 / span 4;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.bridge-title {
  grid-column: 2;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.bridge-action {
  grid-column: 2;
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.bridge-goal {
  grid-column: 2;
  min-width: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.bridge-done {
  grid-column: 2;
  min-width: 0;
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
  border-top: 1px dashed var(--line);
}

.route-tips {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.route-tip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 6px 20px;
  padding: 14px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.tip-condition {
  min-width: 0;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.75;
  color: var(--ink);
}

.tip-handle {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ==========================================================================
   pages — 入口核对
   ========================================================================== */

.check-step-list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.check-step-list .check-step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 6px 18px;
  align-items: start;
  padding: 18px 20px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.check-step-list .check-step-num {
  grid-row: 1 / span 4;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.check-step-list .check-step-title {
  grid-column: 2;
  min-width: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.check-step-list .check-step-action {
  grid-column: 2;
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.check-step-list .check-step-point {
  grid-column: 2;
  min-width: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--olive);
}

.check-step-list .check-step-fail {
  grid-column: 2;
  min-width: 0;
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
  border-top: 1px dashed var(--line);
}

.misjudge-table {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.7;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.misjudge-table thead th {
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
  background: var(--ink);
}

.misjudge-table tbody td {
  padding: 12px 16px;
  vertical-align: top;
  color: var(--ink-soft);
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
}

.misjudge-table tbody td:first-child {
  font-weight: 600;
  color: var(--ink);
}

.misjudge-table tbody tr:nth-child(even) td {
  background: var(--paper);
}

.record-format-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.record-format-item {
  min-width: 0;
  padding: 16px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lime);
  border-radius: 0 0 var(--radius) var(--radius);
}

.record-format-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

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

.exception-path-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exception-path-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: start;
  padding: 14px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.exception-path-num {
  grid-row: 1 / span 2;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.exception-path-title {
  grid-column: 2;
  min-width: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.exception-path-text {
  grid-column: 2;
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ==========================================================================
   pages — 内容边界
   ========================================================================== */

.section-media {
  margin: 20px 0 20px;
  aspect-ratio: 21 / 8;
}

.pair-columns {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.pair-col {
  min-width: 0;
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.pair-col-provided {
  background: var(--paper-deep);
  border-top: 3px solid var(--lime);
}

.pair-col-not {
  background: var(--paper);
  border-top: 3px solid var(--amber);
}

.pair-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

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

.pair-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.pair-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  background: var(--olive);
  border-radius: 50%;
}

.pair-col-not .pair-list li::before {
  background: var(--amber);
}

.term-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.term-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) minmax(0, 1.9fr);
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.term-row dt {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
}

.term-row dd {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.term-note {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.term-note a {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 1px solid var(--lime);
}

.term-note a:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

.rule-columns {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.rule-col {
  min-width: 0;
  padding: 16px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rule-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

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

.boundary-log .log-list {
  margin-top: 18px;
}

.log-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 96px minmax(0, 1.2fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.7;
  border-bottom: 1px solid var(--line);
}

.log-id {
  font-weight: 700;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.log-scope {
  min-width: 0;
  font-weight: 600;
  color: var(--ink);
}

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

.log-hint {
  min-width: 0;
  font-size: 13px;
  color: var(--olive);
}

.boundary-cta-line {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.boundary-cta-line a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-right: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--lime);
}

.boundary-cta-line a:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

/* ==========================================================================
   pages — 更正记录
   ========================================================================== */

.principles-list {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.principle-row {
  display: grid;
  grid-template-columns: minmax(140px, 0.7fr) minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 8px 18px;
  align-items: start;
  padding: 14px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.principle-name {
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink);
}

.principle-scope {
  min-width: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.principle-action {
  min-width: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--olive);
}

.scope-columns {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.scope-col {
  min-width: 0;
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-accepted {
  background: var(--paper-deep);
  border-top: 3px solid var(--lime);
}

.scope-rejected {
  background: var(--paper);
  border-top: 3px solid var(--amber);
}

.scope-col-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

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

.scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  background: var(--olive);
  border-radius: 50%;
}

.scope-rejected .scope-list li::before {
  background: var(--amber);
}

.log-table-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.log-table {
  min-width: 560px;
  font-size: 14px;
  line-height: 1.7;
}

.log-table caption {
  padding: 10px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
  color: var(--paper);
  background: var(--ink);
}

.log-table thead th {
  padding: 11px 14px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--paper-deep);
  border-bottom: 1px solid var(--line);
}

.log-table tbody td {
  padding: 11px 14px;
  vertical-align: top;
  color: var(--ink-soft);
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.log-table tbody tr:nth-child(even) td {
  background: var(--paper-deep);
}

.log-table tbody td:first-child {
  font-weight: 700;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.log-table tbody td a {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 1px solid var(--lime);
}

.log-table tbody td a:hover {
  color: var(--olive);
  border-bottom-color: var(--olive);
}

.feedback-steps {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: feedback;
}

.feedback-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
  background: var(--lime);
  border-radius: 50%;
  font-variant-numeric: tabular-nums;
}

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

.feedback-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.feedback-body p {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.not-accepted-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.not-accepted-item {
  min-width: 0;
  padding: 16px 18px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.not-accepted-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.not-accepted-item p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.section-back {
  margin-top: 20px;
}

/* ==========================================================================
   pages — 404
   ========================================================================== */

.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 64px var(--gutter) 72px;
}

.error-panel {
  max-width: 760px;
  padding: 40px 36px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-top: 4px solid var(--amber);
  border-radius: 0 0 var(--radius) var(--radius);
}

.error-code {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--olive);
  font-variant-numeric: tabular-nums;
}

.error-panel h1 {
  margin: 10px 0 14px;
  font-size: 44px;
  font-weight: 800;
  line-height: 1.14;
  color: var(--ink);
}

.error-lead {
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.error-hint {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.error-hint h2 {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink);
}

.error-hint-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.error-hint-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.error-hint-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--lime);
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.error-note {
  margin-top: 20px;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  background: var(--paper-deep);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ==========================================================================
   responsive — 960px 与 640px 断点
   ========================================================================== */

@media (max-width: 960px) {
  :root {
    --gutter: 24px;
  }

  .header-inner {
    gap: 16px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 40px 0 48px;
  }

  .hero h1 {
    font-size: 44px;
  }

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

  .task-desk {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 48px 0;
  }

  .task-side {
    padding: 20px;
  }

  .curation-strips,
  .guide-log,
  .route-check {
    padding: 48px 0;
  }

  .guide-log,
  .route-check {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .content-aside {
    order: 2;
  }

  .aside-sticky,
  .aside-inner {
    position: static;
  }

  .aside-toc,
  .aside-links,
  .aside-related {
    padding: 16px;
  }

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

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

  .record-format-list,
  .rule-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rule-columns .rule-col:last-child {
    grid-column: 1 / -1;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 18px;
  }

  .header-inner {
    padding: 10px var(--gutter);
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-slogan {
    font-size: 11px;
  }

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

  .hero {
    padding: 28px 0 40px;
  }

  .hero h1 {
    margin: 14px 0 14px;
    font-size: 34px;
    line-height: 1.14;
  }

  .hero-lead {
    font-size: 16px;
  }

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

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .hero-guides {
    padding: 14px 14px;
  }

  .hero-guide-list li {
    padding: 10px 0;
  }

  .hero-guide-list a {
    flex: 1 1 100%;
  }

  .task-desk,
  .curation-strips,
  .guide-log,
  .route-check,
  .boundary-cta {
    padding: 40px 0;
  }

  .boundary-cta {
    padding-bottom: 0;
  }

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

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

  .curation-figure {
    aspect-ratio: 16 / 10;
  }

  .strip-item,
  .theme-strip {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 18px;
  }

  .strip-item:hover {
    transform: none;
  }

  .strip-no,
  .theme-strip .strip-no {
    font-size: 20px;
  }

  .log-item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 4px 10px;
  }

  .log-item .log-type,
  .log-item .log-status {
    grid-column: 2;
  }

  .log-item .log-status {
    justify-self: start;
  }

  .boundary-cta-bar {
    padding: 18px;
  }

  .related-links {
    margin-top: 32px;
  }

  .page-title {
    margin-bottom: 22px;
    padding: 20px 0 18px;
  }

  .page-title .page-title,
  .page-title h1,
  .page-header .page-title {
    font-size: 30px;
  }

  .page-lead {
    font-size: 15px;
  }

  .overview-strip {
    grid-template-columns: minmax(0, 1fr);
    margin-bottom: 28px;
  }

  .overview-cell {
    padding: 14px 16px;
  }

  .content-section,
  .content-block,
  .theme-section,
  .sequence-section,
  .label-section,
  .update-section,
  .boundary-pair,
  .terminology,
  .citation-rules,
  .boundary-log {
    padding: 24px 0;
  }

  .content-section h2,
  .content-block h2,
  .theme-section h2,
  .sequence-section h2,
  .label-section h2,
  .update-section h2,
  .boundary-pair h2,
  .terminology h2,
  .citation-rules h2,
  .boundary-log h2 {
    font-size: 22px;
  }

  .channel-figure,
  .theme-visual,
  .content-figure,
  .section-media {
    aspect-ratio: 16 / 10;
  }

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

  .update-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 4px 10px;
  }

  .update-row .update-type {
    grid-column: 2;
  }

  .prep-checklist,
  .record-format-list,
  .rule-columns,
  .pair-columns,
  .scope-columns,
  .not-accepted-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .rule-columns .rule-col:last-child {
    grid-column: auto;
  }

  .bridge-step,
  .check-step-list .check-step {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 4px 12px;
    padding: 14px 16px;
  }

  .bridge-num,
  .check-step-list .check-step-num {
    font-size: 18px;
  }

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

  .route-tip {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 12px 14px;
  }

  .log-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 4px 10px;
  }

  .log-row .log-type,
  .log-row .log-hint {
    grid-column: 2;
  }

  .misjudge-table {
    display: block;
    overflow-x: auto;
    min-width: 0;
  }

  .misjudge-table thead,
  .misjudge-table tbody {
    min-width: 480px;
    display: block;
  }

  .misjudge-table thead tr,
  .misjudge-table tbody tr {
    display: table;
    width: 100%;
    table-layout: fixed;
  }

  .misjudge-table thead {
    display: table-header-group;
  }

  .misjudge-table tbody {
    display: table-row-group;
  }

  .misjudge-table {
    display: table;
  }

  .log-table-wrap {
    margin-left: 0;
    margin-right: 0;
  }

  .principle-row {
    padding: 12px 14px;
  }

  .feedback-step {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px;
    padding: 12px 14px;
  }

  .feedback-num {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .error-main {
    padding: 40px var(--gutter) 48px;
  }

  .error-panel {
    padding: 26px 20px;
  }

  .error-panel h1 {
    font-size: 30px;
  }

  .error-actions .btn {
    flex: 1 1 auto;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 36px var(--gutter) 28px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    padding: 16px var(--gutter) 24px;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .site-body a,
  .channel-block,
  .channel-card,
  .strip-item,
  .btn {
    transition: none;
  }

  .channel-block:hover,
  .channel-card:hover,
  .strip-item:hover {
    transform: none;
  }
}