/* =========================================================
   热门大瓜 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------- base ---------- */
:root {
  --paper: #F6F1E7;
  --paper-deep: #EFE7D8;
  --ink-green: #20483B;
  --ink-green-soft: #2E5C4C;
  --orange: #D07A3A;
  --orange-soft: #F2E0CE;
  --slate: #5E7180;
  --ink: #222A27;
  --ink-soft: #4A554F;
  --line: #CFC3B2;
  --line-soft: #E2D8C8;
  --white: #FFFDF8;
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1180px;
  --read: 760px;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --shadow: 0 2px 10px rgba(32, 72, 59, 0.07);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  text-align: left;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--serif);
  color: var(--ink-green);
  font-weight: 700;
  line-height: 1.28;
}

p {
  margin: 0 0 14px;
}

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

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

a {
  color: var(--ink-green);
  text-decoration: none;
  transition: color .18s ease;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

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

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
}

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

caption {
  caption-side: top;
  text-align: left;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--slate);
  padding-bottom: 10px;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  margin-top: 8px;
}

/* ---------- layout ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
}

.site-main {
  display: block;
}

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

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

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--slate);
  padding: 20px 0 0;
}

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

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

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

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

.page-header {
  padding: 18px 0 6px;
}

.page-title {
  font-size: 34px;
  line-height: 1.24;
  color: var(--ink-green);
}

.page-head {
  padding: 6px 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
  max-width: var(--read);
}

.page-kicker {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--orange);
  letter-spacing: .04em;
  margin-bottom: 6px;
}

.page-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin: 0;
}

.page-layout {
  display: grid;
  gap: 40px;
  align-items: start;
}

.content-layout {
  grid-template-columns: minmax(0, 1fr) 320px;
}

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

.sidebar-left .page-layout,
.page-layout.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

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

.section-head h2 {
  font-size: 26px;
  margin-bottom: 8px;
}

.section-head p {
  color: var(--ink-soft);
  max-width: 72ch;
}

.section-lead,
.section-intro {
  color: var(--ink-soft);
  max-width: 72ch;
  margin: 8px 0 22px;
}

.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--orange);
  border-bottom: 1px solid rgba(208, 122, 58, 0.4);
  padding-bottom: 1px;
  margin-top: 12px;
}

.text-link:hover {
  color: var(--ink-green);
  border-bottom-color: var(--ink-green);
}

/* ---------- components ---------- */

/* 页头品牌与导航 */
.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink-green);
}

.brand-slogan {
  font-size: 12px;
  color: var(--slate);
  letter-spacing: .04em;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 18px;
}

.site-nav a {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  color: var(--ink-green);
  border-bottom-color: var(--line);
}

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

.header-index {
  font-size: 13px;
  color: var(--ink-green);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  white-space: nowrap;
  background: var(--white);
}

.header-index:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

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

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.mobile-nav ul {
  padding: 8px 24px 16px;
}

.mobile-nav a {
  display: block;
  padding: 11px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
}

.mobile-nav a.is-current {
  color: var(--ink-green);
  font-weight: 700;
}

.mobile-nav.is-open {
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.btn-primary {
  background: var(--ink-green);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--orange);
  color: #fff;
}

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

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

/* 通用表格 */
.route-table,
.genre-table,
.correction-table,
.coop-table {
  font-size: 14px;
  line-height: 1.7;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.route-table th,
.route-table td,
.genre-table th,
.genre-table td,
.correction-table th,
.correction-table td,
.coop-table th,
.coop-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.route-table thead th,
.genre-table thead th,
.correction-table thead th,
.coop-table thead th {
  background: var(--paper-deep);
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-green);
  font-weight: 700;
  letter-spacing: .02em;
}

.route-table tbody th,
.genre-table tbody th,
.correction-table tbody th,
.coop-table tbody th {
  font-family: var(--serif);
  color: var(--ink-green);
  font-weight: 700;
  background: rgba(239, 231, 216, 0.5);
  white-space: nowrap;
}

.route-table tbody tr:last-child th,
.route-table tbody tr:last-child td,
.genre-table tbody tr:last-child th,
.genre-table tbody tr:last-child td,
.correction-table tbody tr:last-child th,
.correction-table tbody tr:last-child td,
.coop-table tbody tr:last-child th,
.coop-table tbody tr:last-child td {
  border-bottom: 0;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 22px;
}

/* 时间线通用语法 */
.stage-timeline {
  display: grid;
  gap: 12px;
  counter-reset: stage;
}

.stage-timeline li {
  position: relative;
  padding: 12px 14px 12px 46px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stage-timeline li::before {
  counter-increment: stage;
  content: counter(stage, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 12px;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--orange);
  font-weight: 700;
}

.stage-name {
  display: block;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-green);
  font-weight: 700;
  margin-bottom: 2px;
}

.stage-desc {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 检查清单 */
.checklist-inline {
  margin-top: 28px;
  padding: 22px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
}

.checklist-inline h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.checklist-inline ul {
  display: grid;
  gap: 8px;
}

.checklist-inline li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--ink-soft);
}

.checklist-inline li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-green);
}

/* 页脚 */
.site-footer {
  background: var(--ink-green);
  color: #E6E1D5;
  margin-top: 24px;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 26px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.3fr;
  gap: 32px;
}

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

.footer-name {
  font-family: var(--serif);
  font-size: 20px;
  color: #FFFDF8;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 13px;
  line-height: 1.75;
  color: #C9D2C9;
  margin: 0;
}

.footer-title {
  font-family: var(--serif);
  font-size: 14px;
  color: #FFFDF8;
  margin-bottom: 12px;
  letter-spacing: .04em;
}

.footer-group ul {
  display: grid;
  gap: 8px;
}

.footer-group a {
  font-size: 13px;
  color: #C9D2C9;
}

.footer-group a:hover {
  color: var(--orange-soft);
}

.footer-boundary p {
  font-size: 12px;
  line-height: 1.75;
  color: #B7C2B9;
  margin: 0;
}

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px 26px;
  border-top: 1px solid rgba(255, 253, 248, 0.14);
  font-size: 12px;
  color: #A9B6AC;
}

/* ---------- pages ---------- */

/* 首页 · 首屏 */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 44px;
  align-items: start;
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--line);
}

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

.hero-eyebrow {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--orange);
  letter-spacing: .06em;
  margin-bottom: 14px;
}

.hero-copy h1 {
  font-size: 44px;
  line-height: 1.2;
  margin-bottom: 18px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 40em;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.hero-genres {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px 10px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}

.hero-genres a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--ink-green);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  text-align: center;
}

.hero-genres a:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.hero-visual {
  min-width: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.hero-tip {
  margin-top: 12px;
  padding: 12px 14px;
  background: var(--orange-soft);
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-green);
}

/* 首页 · 题材索引条 */
.genre-strip {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.genre-strip ul {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.genre-strip a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: 100%;
  padding: 14px 12px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color .18s ease, transform .18s ease;
}

.genre-strip a:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.genre-name {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-green);
}

.genre-note {
  font-size: 12px;
  line-height: 1.65;
  color: var(--slate);
}

/* 首页 · 专题编排工作台 */
.topic-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 40px;
  align-items: start;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.topic-table {
  min-width: 0;
}

.topic-table h2 {
  font-size: 28px;
  margin-bottom: 6px;
}

.topic-visual {
  min-width: 0;
}

.topic-visual figure {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 20px;
}

.topic-visual img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

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

/* 首页 · 五维标准横排 */
.standard-grid {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.standard-grid > h2 {
  font-size: 28px;
  margin-bottom: 6px;
}

.standard-cells {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.standard-cell {
  min-width: 0;
  padding: 18px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink-green);
  border-radius: var(--radius);
}

.standard-cell h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.standard-question {
  font-size: 14px;
  color: var(--ink);
  margin-bottom: 8px;
}

.standard-hint {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  margin: 0;
}

/* 首页 · 四阶段阅读路径 */
.reading-timeline {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.reading-timeline > h2 {
  font-size: 28px;
  margin-bottom: 6px;
}

.path-stages {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.path-stage {
  min-width: 0;
  padding: 18px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-left: 3px solid var(--orange);
}

.path-stage h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.path-stage p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.path-stage .stage-budget {
  color: var(--ink-green);
  font-weight: 600;
}

.path-stage .stage-check {
  padding-top: 8px;
  border-top: 1px dashed var(--line);
  margin-top: 10px;
}

.path-stage .text-link {
  font-size: 13px;
  margin-top: 10px;
}

/* 首页 · 信任与边界 */
.trust-notes {
  padding: 48px 0 8px;
}

.trust-notes h2 {
  font-size: 28px;
  margin-bottom: 22px;
}

.trust-correction,
.trust-cooperation {
  min-width: 0;
  padding: 22px 22px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.trust-notes {
  display: block;
}

.trust-notes > h2 {
  display: block;
}

.trust-correction {
  margin-bottom: 18px;
}

.trust-correction h3,
.trust-cooperation h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.trust-correction p,
.trust-cooperation p {
  font-size: 14px;
  color: var(--ink-soft);
}

.trust-correction ul,
.trust-cooperation ul {
  display: grid;
  gap: 8px;
  margin: 12px 0 4px;
}

.trust-correction li,
.trust-cooperation li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-soft);
}

.trust-correction li::before,
.trust-cooperation li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
}

/* 内页 · 题材地图 */
.genre-rail {
  min-width: 0;
  position: sticky;
  top: 92px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rail-title {
  font-size: 17px;
  margin-bottom: 12px;
}

.rail-list {
  display: grid;
  gap: 4px;
}

.rail-list a {
  display: block;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--ink-green);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
}

.rail-list a:hover {
  background: var(--paper);
  border-left-color: var(--orange);
}

.rail-note {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
  margin-top: 2px;
}

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

.genre-content section {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

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

.genre-content h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

.genre-content > section > p {
  color: var(--ink-soft);
  max-width: 74ch;
}

.genre-figure {
  margin-top: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.genre-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

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

.checklist-group {
  min-width: 0;
  padding: 18px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.checklist-group h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.checklist-group ul {
  display: grid;
  gap: 8px;
}

.checklist-group li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-soft);
}

.checklist-group li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-green);
}

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

.combo-item {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.combo-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

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

.combo-tip {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  color: var(--ink-green);
  font-size: 13px;
}

.prepare-list {
  display: grid;
  gap: 10px;
  margin: 16px 0;
  counter-reset: prep;
}

.prepare-list li {
  position: relative;
  padding: 12px 14px 12px 46px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--ink-soft);
}

.prepare-list li::before {
  counter-increment: prep;
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 12px;
  font-family: var(--serif);
  font-weight: 700;
  color: var(--orange);
}

.prepare-link {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 14px;
}

/* 内页 · 专题策划 */
.topic-main {
  min-width: 0;
}

.topic-main section {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.topic-main section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.topic-main h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.structure-block {
  min-width: 0;
  padding: 18px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.structure-block h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

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

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

.topic-timeline .stage-timeline {
  margin-top: 16px;
}

.stage-node {
  display: block;
}

.stage-index {
  display: none;
}

.stage-node h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.stage-node p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 68ch;
}

.stage-node .stage-mark {
  margin-top: 6px;
  font-size: 13px;
  color: var(--ink-green);
  font-weight: 600;
  max-width: 68ch;
}

.next-steps {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.next-steps li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.next-steps a {
  font-weight: 600;
  font-size: 15px;
}

.next-steps span {
  font-size: 13px;
  color: var(--slate);
}

.topic-aside {
  min-width: 0;
  display: grid;
  gap: 20px;
}

.aside-card {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-card h2 {
  font-size: 17px;
  margin-bottom: 12px;
}

.aside-figure {
  margin-bottom: 14px;
}

.aside-figure img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.aside-points {
  display: grid;
  gap: 8px;
}

.aside-points li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.aside-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

.aside-boundary ul {
  display: grid;
  gap: 8px;
}

.aside-boundary li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.aside-boundary li::before {
  content: "·";
  position: absolute;
  left: 4px;
  top: -1px;
  color: var(--orange);
  font-weight: 700;
}

.aside-link {
  margin-top: 12px;
  font-size: 13px;
}

/* 内页 · 选书标准 */
.standard-article {
  max-width: var(--read);
  margin-bottom: 34px;
}

.article-media {
  margin-bottom: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.article-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.standard-article > p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.five-dimensions {
  padding: 30px 0 34px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.five-dimensions .standard-grid {
  padding: 0;
  border-bottom: 0;
}

.standard-column {
  min-width: 0;
  padding: 18px 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink-green);
  border-radius: var(--radius);
}

.standard-index {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 4px;
}

.standard-column h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.standard-column .standard-question {
  margin-bottom: 10px;
}

.standard-checks {
  display: grid;
  gap: 6px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.standard-checks li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.standard-checks li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

.pre-read-checklist {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

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

.checklist-reading,
.checklist-boundary,
.material-checklist,
.rights-checklist {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.checklist-reading h3,
.checklist-boundary h3,
.material-checklist h3,
.rights-checklist h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.checklist-reading ul,
.checklist-boundary ul,
.material-checklist ul,
.rights-checklist ul {
  display: grid;
  gap: 8px;
}

.checklist-reading li,
.checklist-boundary li,
.material-checklist li,
.rights-checklist li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.checklist-reading li::before,
.checklist-boundary li::before,
.material-checklist li::before,
.rights-checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-green);
}

.checklist-boundary li::before,
.rights-checklist li::before {
  background: var(--orange);
}

.common-misconceptions {
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.faq-list {
  display: grid;
  gap: 10px;
  max-width: var(--read);
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
}

.faq-item summary {
  padding: 14px 0;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-green);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 28px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 12px;
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
  font-weight: 400;
}

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

.faq-item p {
  padding: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

.related-entry {
  padding: 34px 0 0;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.related-list li {
  min-width: 0;
  padding: 16px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-list a {
  display: block;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.related-list span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* 内页 · 阅读路径 */
.path-main {
  min-width: 0;
}

.path-main section {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.path-main section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.path-main h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.timeline-list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
  counter-reset: node;
}

.timeline-node {
  position: relative;
  min-width: 0;
  padding: 18px 20px 18px 58px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.timeline-node .node-index {
  position: absolute;
  left: 18px;
  top: 18px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--orange);
}

.timeline-node .node-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.timeline-node .node-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 66ch;
}

.timeline-node .node-budget {
  font-size: 13px;
  color: var(--ink-green);
  font-weight: 600;
}

.timeline-node .node-check {
  margin-top: 6px;
  padding: 8px 12px;
  background: var(--paper);
  border-left: 2px solid var(--orange);
  border-radius: var(--radius-sm);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.timeline-node .node-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  border-bottom: 1px solid rgba(208, 122, 58, 0.4);
}

.sortable-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.sortable-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--ink-soft);
}

.sortable-item .drag-handle {
  flex: 0 0 auto;
  width: 30px;
  height: 34px;
  padding: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--slate);
  font-size: 14px;
  line-height: 1;
  letter-spacing: 1px;
}

.sortable-item .drag-handle:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.sortable-item .item-text {
  flex: 1 1 auto;
  min-width: 0;
}

.item-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.item-actions button {
  min-width: 44px;
  min-height: 34px;
  padding: 0 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--ink-green);
}

.item-actions button:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.sortable-hint {
  margin-top: 12px;
  font-size: 13px;
  color: var(--slate);
}

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

.chapter-split,
.chapter-review {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.chapter-split h3,
.chapter-review h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.chapter-split ul,
.chapter-review ul {
  display: grid;
  gap: 8px;
}

.chapter-split li,
.chapter-review li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.chapter-split li::before,
.chapter-review li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-green);
}

.chapter-review li::before {
  background: var(--orange);
}

.path-aside {
  min-width: 0;
  display: grid;
  gap: 20px;
}

.aside-block {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-block h2 {
  font-size: 17px;
  margin-bottom: 12px;
}

.prep-list {
  display: grid;
  gap: 8px;
}

.prep-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.prep-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

.next-steps > p {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.next-links {
  display: grid;
  gap: 8px;
}

.next-links a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 600;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.next-links a:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.related-links-label {
  font-family: var(--serif);
  color: var(--slate);
}

.related-links-item {
  font-weight: 600;
  color: var(--ink-green);
}

.related-links-item:hover {
  color: var(--orange);
}

/* 内页 · 更新与纠错 */
.correction-main {
  min-width: 0;
}

.correction-main section {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.correction-main section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.correction-main h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.correction-main > section > p {
  color: var(--ink-soft);
  max-width: 74ch;
}

.flow-timeline {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  counter-reset: flow;
}

.flow-node {
  position: relative;
  min-width: 0;
  padding: 16px 18px 16px 58px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.flow-node .flow-step {
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--orange);
}

.flow-node h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.flow-node p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 66ch;
}

.scope-list,
.unsuitable-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.scope-list li,
.unsuitable-list li {
  position: relative;
  padding: 12px 16px 12px 40px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.scope-list li::before,
.unsuitable-list li::before {
  content: "×";
  position: absolute;
  left: 16px;
  top: 12px;
  color: var(--orange);
  font-weight: 700;
}

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

.reading-notice,
.reading-choice {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.reading-notice h3,
.reading-choice h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.reading-notice ul,
.reading-choice ul {
  display: grid;
  gap: 8px;
}

.reading-notice li,
.reading-choice li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.reading-notice li::before,
.reading-choice li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-green);
}

.reading-choice li::before {
  background: var(--orange);
}

.correction-aside {
  min-width: 0;
  display: grid;
  gap: 20px;
}

.aside-links {
  min-width: 0;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-links h2 {
  font-size: 17px;
  margin-bottom: 8px;
}

.aside-links > p {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.aside-links ul {
  display: grid;
  gap: 6px;
}

.aside-links a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--ink-green);
  background: var(--paper);
  border-radius: var(--radius-sm);
}

.aside-links a:hover {
  color: var(--orange);
}

/* 内页 · 内容合作 */
.cooperation-main {
  min-width: 0;
}

.cooperation-main section {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.cooperation-main section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.cooperation-main h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.cooperation-main > section > p {
  color: var(--ink-soft);
  max-width: 74ch;
}

.coop-material .checklist-columns {
  margin-top: 16px;
}

.cooperation-aside {
  min-width: 0;
  display: grid;
  gap: 20px;
}

.aside-links p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

/* 404 */
.error-main {
  max-width: 880px;
  margin: 0 auto;
  padding: 64px 24px 72px;
}

.error-panel {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.error-code {
  font-family: var(--serif);
  font-size: 56px;
  line-height: 1;
  color: var(--orange);
  margin-bottom: 12px;
}

.error-panel h1 {
  font-size: 32px;
  margin-bottom: 12px;
}

.error-lead {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 34em;
}

.error-hint {
  font-size: 14px;
  color: var(--slate);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.error-routes h2 {
  font-size: 20px;
  margin-bottom: 14px;
}

.error-route-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.error-route-list a {
  display: block;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 600;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.error-route-list a:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* 轻微出现动画（不影响初始可见性） */
@keyframes rise-in {
  from {
    transform: translateY(8px);
  }
  to {
    transform: translateY(0);
  }
}

.hero-copy,
.hero-visual {
  animation: rise-in .5s ease both;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .site-nav ul {
    gap: 4px 12px;
  }

  .site-nav a {
    font-size: 14px;
  }

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

  .footer-boundary {
    grid-column: 1 / -1;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 253, 248, 0.14);
  }

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

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

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

@media (max-width: 960px) {
  .header-inner {
    grid-template-columns: 1fr auto auto;
    gap: 12px;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-index {
    padding: 8px 12px;
    font-size: 12px;
  }

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

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 36px 0 32px;
  }

  .hero-copy h1 {
    font-size: 36px;
  }

  .hero-visual img {
    height: 300px;
  }

  .topic-workbench {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .genre-rail {
    position: static;
  }

  .rail-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

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

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

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

@media (max-width: 720px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .brand-name {
    font-size: 19px;
  }

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

  .header-index {
    display: none;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .home-main,
  .inner-main {
    padding: 0 16px 40px;
  }

  .page-title {
    font-size: 28px;
  }

  .page-head {
    padding-bottom: 20px;
    margin-bottom: 24px;
  }

  .hero {
    padding: 28px 0 26px;
  }

  .hero-copy h1 {
    font-size: 32px;
  }

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

  .hero-actions {
    gap: 10px;
  }

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

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

  .hero-visual img {
    height: 220px;
  }

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

  .topic-table h2,
  .standard-grid > h2,
  .reading-timeline > h2,
  .trust-notes h2 {
    font-size: 23px;
  }

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

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

  .trust-notes {
    padding-top: 34px;
  }

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

  .combo-grid,
  .checklist-columns,
  .chapter-columns,
  .notice-columns {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .timeline-node {
    padding: 16px 16px 16px 16px;
  }

  .timeline-node .node-index {
    position: static;
    display: block;
    margin-bottom: 2px;
  }

  .flow-node {
    padding: 16px 16px 16px 16px;
  }

  .flow-node .flow-step {
    position: static;
    display: block;
    margin-bottom: 2px;
  }

  .stage-timeline li {
    padding-left: 42px;
  }

  .sortable-item {
    flex-wrap: wrap;
    gap: 8px;
  }

  .sortable-item .item-text {
    flex: 1 1 100%;
    order: 3;
  }

  .item-actions {
    margin-left: auto;
  }

  .error-main {
    padding: 40px 16px 48px;
  }

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

  .error-panel h1 {
    font-size: 26px;
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding: 32px 16px 20px;
  }

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

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

  .article-media img {
    height: 200px;
  }

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

@media (max-width: 400px) {
  .hero-genres {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

  .hero-copy h1 {
    font-size: 28px;
  }

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

  .sortable-item .drag-handle {
    width: 26px;
  }

  .item-actions button {
    min-width: 40px;
    padding: 0 8px;
  }
}