/* ============================================================
   511吃瓜网 · 全站样式表
   手工艺目录风 · 自然色彩 · 编号章节 · 材料特写图卡
   分组：base / layout / components / pages / responsive
   ============================================================ */

/* ------------------------------------------------------------
   Base —— 全局基础
   ------------------------------------------------------------ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
.site-body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #33302E;
  background-color: #FBF7F0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #A9714E;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #8A5A3C;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  color: #3B2F2F;
  line-height: 1.4;
  font-weight: 700;
}

p {
  margin-bottom: 0;
}

figure {
  margin: 0;
}

/* ------------------------------------------------------------
   Layout —— 全站骨架
   ------------------------------------------------------------ */
.site-header {
  background-color: #FBF7F0;
  border-bottom: 1px solid #E8E0D4;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand-block {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-name {
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  font-size: 24px;
  font-weight: 700;
  color: #3B2F2F;
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 12px;
  color: #8A857E;
  letter-spacing: 0.04em;
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 16px;
  color: #4A4540;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: #A9714E;
  background-color: #F1EAE0;
}

.nav-link.is-current {
  color: #A9714E;
  font-weight: 600;
}

.nav-link.is-current::after {
  content: "";
  display: block;
  height: 2px;
  background-color: #A9714E;
  border-radius: 1px;
  margin-top: 2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #3B2F2F;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-main {
  min-height: 60vh;
}

.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

.site-footer {
  background-color: #2E4B3A;
  color: #F5F0E8;
  margin-top: 64px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  font-size: 20px;
  color: #F5F0E8;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #C9D6CE;
  max-width: 320px;
}

.footer-heading {
  font-size: 16px;
  color: #F5F0E8;
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #C9D6CE;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #F5F0E8;
}

.version-label {
  display: inline-block;
  font-size: 13px;
  color: #A9714E;
  background-color: rgba(169, 113, 78, 0.15);
  border-radius: 4px;
  padding: 4px 10px;
  margin-bottom: 12px;
  font-weight: 600;
}

.version-note {
  font-size: 14px;
  color: #C9D6CE;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(245, 240, 232, 0.15);
  padding: 20px 24px;
  text-align: center;
}

.footer-note,
.copyright {
  font-size: 13px;
  color: #A8B8AF;
  line-height: 1.6;
}

.copyright {
  margin-top: 4px;
}

/* ------------------------------------------------------------
   Components —— 通用组件
   ------------------------------------------------------------ */
/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 8px;
  font-size: 14px;
  color: #8A857E;
}

.breadcrumb a {
  color: #8A857E;
}

.breadcrumb a:hover {
  color: #A9714E;
}

.breadcrumb-sep {
  color: #B5AFA6;
}

.breadcrumb-current {
  color: #4A4540;
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  padding: 16px 0 8px;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  color: #3B2F2F;
}

.page-header-block {
  padding: 8px 0 24px;
  border-bottom: 1px solid #E8E0D4;
  margin-bottom: 40px;
}

.page-intro,
.page-summary,
.page-description {
  font-size: 16px;
  line-height: 1.7;
  color: #5A554F;
  max-width: 760px;
}

.version-tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: #A9714E;
  background-color: #F1EAE0;
  border-radius: 4px;
  padding: 4px 12px;
  font-weight: 600;
}

/* 章节标题 */
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.section-number,
.section-index {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  font-weight: 700;
  color: #A9714E;
  line-height: 1;
}

.section-title {
  font-size: 28px;
  color: #3B2F2F;
}

.section-lead {
  font-size: 16px;
  color: #5A554F;
  line-height: 1.7;
  max-width: 760px;
  margin-bottom: 32px;
}

.section-desc {
  font-size: 15px;
  color: #6A655E;
  line-height: 1.7;
  max-width: 720px;
  margin-bottom: 24px;
}

.section-intro {
  font-size: 15px;
  color: #6A655E;
  line-height: 1.7;
  max-width: 720px;
  margin-bottom: 24px;
}

/* 编号章节（服务政策 · 处理流程 · 进度说明） */
.policy-section,
.timeline-section,
.responsibility-section,
.related-docs-section,
.query-note-section,
.version-timeline-section,
.upgrade-help-section {
  margin-bottom: 56px;
}

/* 版本编号标签 */
.version-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: #A9714E;
  background-color: #F1EAE0;
  border: 1px solid #E0D5C8;
  border-radius: 4px;
  padding: 2px 10px;
  white-space: nowrap;
}

/* 图卡通用 */
.policy-figure,
.timeline-figure,
.category-figure,
.doc-figure {
  margin: 24px 0;
  border-radius: 8px;
  overflow: hidden;
  background-color: #F1EAE0;
}

.policy-figure img,
.timeline-figure img,
.category-figure img,
.doc-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.policy-figure figcaption,
.timeline-figure figcaption,
.category-figure figcaption,
.doc-figure figcaption {
  padding: 12px 16px;
  font-size: 14px;
  color: #6A655E;
  background-color: #F1EAE0;
  line-height: 1.6;
}

/* 相关链接区 */
.related-links-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #E8E0D4;
}

.related-title {
  font-size: 20px;
  color: #3B2F2F;
  margin-bottom: 16px;
}

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

.related-item {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 16px;
}

.related-item a {
  font-size: 16px;
  font-weight: 600;
  color: #3B2F2F;
  display: block;
  margin-bottom: 6px;
}

.related-item a:hover {
  color: #A9714E;
}

.related-desc {
  font-size: 14px;
  color: #6A655E;
  line-height: 1.6;
}

/* 相关链接卡片（处理流程 · 进度说明） */
.related-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-link-card {
  display: block;
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-link-card:hover {
  border-color: #A9714E;
  box-shadow: 0 2px 8px rgba(59, 47, 47, 0.06);
}

.related-link-card .card-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.related-link-card .card-desc {
  font-size: 14px;
  color: #6A655E;
  line-height: 1.6;
}

/* 相关链接（处理流程底部横条） */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 16px 0;
  margin-top: 8px;
}

.related-links-label {
  font-size: 14px;
  color: #8A857E;
}

.related-links-item {
  font-size: 14px;
  color: #A9714E;
  border: 1px solid #E0D5C8;
  border-radius: 20px;
  padding: 4px 14px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  background-color: #A9714E;
  color: #FFFFFF;
  border-color: #A9714E;
}

/* 两栏布局 */
.layout-shell.page-layout,
.page-layout.layout-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

.aside-nav,
.content-aside {
  min-width: 0;
}

.aside-inner {
  position: sticky;
  top: 96px;
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 24px;
}

.aside-title {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E8E0D4;
}

.aside-list li {
  margin-bottom: 4px;
}

.aside-item a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  color: #4A4540;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.aside-item a:hover {
  background-color: #F1EAE0;
  color: #A9714E;
}

/* 侧栏卡片（资料下载） */
.aside-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 16px;
}

.aside-card h3 {
  font-size: 16px;
  color: #3B2F2F;
  margin-bottom: 12px;
}

.aside-links li {
  margin-bottom: 8px;
}

.aside-links a {
  font-size: 14px;
  color: #4A4540;
}

.aside-links a:hover {
  color: #A9714E;
}

/* ------------------------------------------------------------
   Pages —— 首页
   ------------------------------------------------------------ */
/* Hero */
.hero-section {
  position: relative;
  background-color: #F1EAE0;
  border-bottom: 1px solid #E8E0D4;
}

.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-text h1 {
  font-size: 36px;
  line-height: 1.3;
  color: #3B2F2F;
  margin-bottom: 12px;
}

.hero-slogan {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  color: #A9714E;
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 16px;
  color: #5A554F;
  line-height: 1.7;
  max-width: 520px;
}

.command-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.command-btn {
  display: block;
  background-color: #FFFFFF;
  border: 1px solid #E0D5C8;
  border-radius: 8px;
  padding: 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.command-btn:hover {
  border-color: #A9714E;
  box-shadow: 0 2px 12px rgba(169, 113, 78, 0.12);
}

.cmd-label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: #3B2F2F;
  margin-bottom: 4px;
}

.command-btn:hover .cmd-label {
  color: #A9714E;
}

.cmd-desc {
  display: block;
  font-size: 13px;
  color: #8A857E;
  line-height: 1.5;
}

/* 通用区块 */
.section-block {
  padding: 64px 0;
}

.section-block:nth-child(even) {
  background-color: #FFFFFF;
}

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 结论区 */
.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.promise-card {
  background-color: #FBF7F0;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 24px;
}

.promise-card h3 {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.promise-card p {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
}

/* 方法区 */
.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.method-card {
  background-color: #FBF7F0;
  border-left: 3px solid #A9714E;
  border-radius: 0 8px 8px 0;
  padding: 20px 20px 20px 24px;
}

.method-card h3 {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.method-card p {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.7;
}

/* 过程区 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.step-item {
  position: relative;
  background-color: #FBF7F0;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px 16px;
  text-align: left;
}

.step-item::after {
  content: "";
  position: absolute;
  top: 28px;
  right: -10px;
  width: 20px;
  height: 1px;
  background-color: #D8CEC0;
}

.step-item:last-child::after {
  display: none;
}

.step-index {
  display: inline-block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
  font-weight: 700;
  color: #A9714E;
  line-height: 1;
  margin-bottom: 12px;
}

.step-item h3 {
  font-size: 16px;
  color: #3B2F2F;
  margin-bottom: 6px;
}

.step-item p {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.6;
}

/* 结果区 */
.result-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.standard-list {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.standard-item {
  background-color: #FBF7F0;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 16px 20px;
}

.standard-item h3 {
  font-size: 16px;
  color: #3B2F2F;
  margin-bottom: 4px;
}

.standard-item p {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.6;
}

.material-figure {
  border-radius: 8px;
  overflow: hidden;
  background-color: #F1EAE0;
}

.material-image {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.material-figure figcaption {
  padding: 12px 16px;
  font-size: 14px;
  color: #6A655E;
  background-color: #F1EAE0;
  line-height: 1.6;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 600;
  color: #3B2F2F;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s ease;
}

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

.faq-item summary::before {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #A9714E;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.faq-item[open] summary::before {
  content: "–";
}

.faq-item summary:hover {
  color: #A9714E;
}

.faq-item p {
  padding: 0 20px 20px 52px;
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
}

/* CTA 区 */
.cta-note-section {
  background-color: #2E4B3A;
}

.cta-note-section .section-inner {
  max-width: 1200px;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.cta-item h2 {
  font-size: 22px;
  color: #F5F0E8;
  margin-bottom: 8px;
}

.cta-item p {
  font-size: 15px;
  color: #C9D6CE;
  line-height: 1.7;
  margin-bottom: 16px;
}

.cta-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: #F5F0E8;
  border: 1px solid rgba(245, 240, 232, 0.4);
  border-radius: 4px;
  padding: 8px 20px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.cta-link:hover {
  background-color: #F5F0E8;
  color: #2E4B3A;
}

/* ------------------------------------------------------------
   Pages —— 服务政策
   ------------------------------------------------------------ */
.scope-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.scope-block {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
}

.block-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.block-text {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
}

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

.standard-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
}

.standard-card .card-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.standard-card .card-text {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.7;
}

.boundaries-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.boundary-item {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
}

.item-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.item-text {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
}

/* ------------------------------------------------------------
   Pages —— 问题分类
   ------------------------------------------------------------ */
.category-index-section {
  margin-bottom: 56px;
}

.category-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.category-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.category-card:hover {
  border-color: #A9714E;
  box-shadow: 0 2px 8px rgba(59, 47, 47, 0.06);
}

.category-number {
  display: inline-block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  font-weight: 700;
  color: #A9714E;
  margin-bottom: 8px;
}

.category-name {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.category-example {
  font-size: 14px;
  color: #6A655E;
  line-height: 1.6;
  margin-bottom: 12px;
}

.card-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #A9714E;
}

.card-link:hover {
  color: #8A5A3C;
}

.category-detail-section {
  margin-bottom: 40px;
}

.category-detail-block {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 20px;
  scroll-margin-top: 96px;
}

.detail-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.detail-number {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  font-weight: 700;
  color: #A9714E;
}

.detail-title {
  font-size: 20px;
  color: #3B2F2F;
}

.detail-text {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
  margin-bottom: 12px;
}

.detail-example {
  font-size: 14px;
  color: #6A655E;
  background-color: #FBF7F0;
  border-left: 3px solid #A9714E;
  border-radius: 0 4px 4px 0;
  padding: 12px 16px;
  line-height: 1.6;
  margin-bottom: 16px;
}

.detail-entry {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.entry-label {
  font-size: 14px;
  color: #8A857E;
}

.detail-entry a {
  font-size: 14px;
  font-weight: 600;
  color: #A9714E;
  border: 1px solid #E0D5C8;
  border-radius: 20px;
  padding: 4px 14px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.detail-entry a:hover {
  background-color: #A9714E;
  color: #FFFFFF;
  border-color: #A9714E;
}

/* ------------------------------------------------------------
   Pages —— 处理流程
   ------------------------------------------------------------ */
.timeline-list {
  position: relative;
  margin: 32px 0;
  padding-left: 40px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: #E0D5C8;
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -40px;
  top: 0;
  width: 26px;
  height: 26px;
  background-color: #A9714E;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid #FBF7F0;
  box-shadow: 0 0 0 2px #A9714E;
}

.step-number {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1;
}

.timeline-content {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px 24px;
}

.step-title {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 6px;
}

.step-owner {
  font-size: 13px;
  color: #A9714E;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
  margin-bottom: 8px;
}

.step-output {
  font-size: 14px;
  color: #6A655E;
  line-height: 1.6;
}

.step-output strong {
  color: #3B2F2F;
  font-weight: 600;
}

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

.responsibility-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 24px;
}

.responsibility-card .card-title {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 16px;
}

.duty-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
  margin-bottom: 8px;
}

.duty-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #A9714E;
}

/* ------------------------------------------------------------
   Pages —— 资料下载
   ------------------------------------------------------------ */
.doc-list-section {
  margin-bottom: 56px;
}

.doc-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: border-color 0.2s ease;
}

.doc-card:hover {
  border-color: #A9714E;
}

.doc-info {
  flex: 1;
  min-width: 0;
}

.doc-info h3 {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 6px;
}

.doc-purpose {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.6;
  margin-bottom: 6px;
}

.doc-version {
  font-size: 13px;
  color: #8A857E;
}

.doc-action {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.doc-format {
  font-size: 12px;
  color: #8A857E;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.doc-download-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #A9714E;
  border: 1px solid #A9714E;
  border-radius: 4px;
  padding: 6px 16px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.doc-download-link:hover {
  background-color: #A9714E;
  color: #FFFFFF;
}

.version-section {
  margin-bottom: 40px;
}

.version-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

.version-content {
  flex: 1;
  min-width: 0;
}

.version-content h3 {
  font-size: 16px;
  color: #3B2F2F;
  margin-bottom: 4px;
}

.version-content p {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.6;
}

/* ------------------------------------------------------------
   Pages —— 进度说明
   ------------------------------------------------------------ */
.query-methods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.query-method-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
}

.method-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.method-text {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.7;
}

.version-timeline {
  position: relative;
  margin: 32px 0;
  padding-left: 40px;
}

.version-timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: #E0D5C8;
}

.timeline-node {
  position: relative;
  margin-bottom: 32px;
}

.timeline-node:last-child {
  margin-bottom: 0;
}

.node-marker {
  position: absolute;
  left: -40px;
  top: 0;
}

.node-content {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px 24px;
}

.node-title {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 6px;
}

.node-text {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
  margin-bottom: 8px;
}

.node-note {
  font-size: 14px;
  color: #6A655E;
  line-height: 1.6;
}

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

.upgrade-step-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
}

.upgrade-step-card .step-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.upgrade-step-card .step-text {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.7;
}

/* 进度说明 · 相关链接卡片 */
.related-link-card {
  display: block;
}

.related-link-name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: #3B2F2F;
  margin-bottom: 6px;
}

.related-link-card:hover .related-link-name {
  color: #A9714E;
}

.related-link-desc {
  font-size: 14px;
  color: #6A655E;
  line-height: 1.6;
}

/* ------------------------------------------------------------
   Pages —— 发展记录
   ------------------------------------------------------------ */
.timeline-section {
  margin-bottom: 56px;
}

.timeline-event {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.event-marker {
  text-align: right;
  padding-top: 4px;
}

.event-phase {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  font-weight: 700;
  color: #A9714E;
  line-height: 1.3;
}

.event-year {
  display: block;
  font-size: 14px;
  color: #8A857E;
  margin-top: 4px;
}

.event-content {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px 24px;
  border-left: 3px solid #A9714E;
}

.event-title {
  font-size: 18px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.event-desc {
  font-size: 15px;
  color: #5A554F;
  line-height: 1.7;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.impact-card {
  background-color: #FFFFFF;
  border: 1px solid #E8E0D4;
  border-radius: 8px;
  padding: 20px;
}

.impact-title {
  font-size: 17px;
  color: #3B2F2F;
  margin-bottom: 8px;
}

.impact-text {
  font-size: 14px;
  color: #5A554F;
  line-height: 1.7;
}

/* ------------------------------------------------------------
   Pages —— 404
   ------------------------------------------------------------ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 64px 24px;
}

.error-section {
  text-align: center;
  max-width: 560px;
}

.error-code {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 72px;
  font-weight: 700;
  color: #A9714E;
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 28px;
  color: #3B2F2F;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: #5A554F;
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-link {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: #FFFFFF;
  background-color: #A9714E;
  border-radius: 4px;
  padding: 10px 28px;
  transition: background-color 0.2s ease;
}

.error-link:hover {
  background-color: #8A5A3C;
  color: #FFFFFF;
}

/* ------------------------------------------------------------
   Responsive —— 响应式
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .step-item::after {
    display: none;
  }

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

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

  .cta-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .result-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  .header-inner {
    min-height: 64px;
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #FBF7F0;
    border-bottom: 1px solid #E8E0D4;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 0;
    box-shadow: 0 8px 16px rgba(59, 47, 47, 0.08);
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    padding: 12px 8px;
    font-size: 16px;
    border-radius: 4px;
  }

  .nav-link.is-current::after {
    display: none;
  }

  .nav-link.is-current {
    color: #A9714E;
    background-color: #F1EAE0;
  }

  .hero-content {
    padding: 48px 16px;
  }

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

  .hero-slogan {
    font-size: 18px;
  }

  .command-panel {
    grid-template-columns: 1fr;
  }

  .section-block {
    padding: 48px 0;
  }

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

  .promise-grid,
  .method-grid,
  .process-steps,
  .standard-list,
  .scope-content,
  .standards-grid,
  .boundaries-list,
  .category-card-grid,
  .responsibility-grid,
  .query-methods-grid,
  .upgrade-steps-grid,
  .impact-grid,
  .related-list,
  .related-links-grid {
    grid-template-columns: 1fr;
  }

  .result-layout {
    grid-template-columns: 1fr;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 15px;
  }

  .faq-item p {
    padding: 0 16px 16px 44px;
    font-size: 14px;
  }

  .cta-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cta-item h2 {
    font-size: 20px;
  }

  .page-title {
    font-size: 26px;
  }

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

  .section-heading {
    flex-wrap: wrap;
    gap: 8px;
  }

  .inner-main {
    padding: 0 16px 48px;
  }

  .breadcrumb {
    padding: 16px 0 4px;
    font-size: 13px;
  }

  .page-header {
    padding: 12px 0 4px;
  }

  .page-header-block {
    padding: 8px 0 20px;
    margin-bottom: 32px;
  }

  /* 两栏布局改单栏 */
  .layout-shell.page-layout,
  .page-layout.layout-shell {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .aside-inner {
    position: static;
  }

  /* 时间线 */
  .timeline-list,
  .version-timeline {
    padding-left: 32px;
  }

  .timeline-list::before,
  .version-timeline::before {
    left: 8px;
  }

  .timeline-marker,
  .node-marker {
    left: -32px;
    width: 20px;
    height: 20px;
  }

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

  /* 文档卡片 */
  .doc-card {
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .doc-action {
    align-items: flex-start;
  }

  /* 发展记录 */
  .timeline-event {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .event-marker {
    text-align: left;
  }

  .event-content {
    padding: 16px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

  .footer-bottom {
    padding: 16px;
  }

  .footer-note,
  .copyright {
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .brand-name {
    font-size: 20px;
  }

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

  .hero-text h1 {
    font-size: 24px;
  }

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

  .cmd-label {
    font-size: 15px;
  }

  .promise-card,
  .method-card,
  .standard-item {
    padding: 16px;
  }

  .step-item {
    padding: 16px;
  }

  .step-index {
    font-size: 24px;
  }

  .scope-block,
  .standard-card,
  .boundary-item,
  .category-card,
  .responsibility-card,
  .query-method-card,
  .upgrade-step-card,
  .impact-card {
    padding: 16px;
  }

  .detail-entry {
    flex-direction: column;
    align-items: flex-start;
  }

  .version-item {
    flex-direction: column;
    gap: 8px;
  }

  .error-code {
    font-size: 56px;
  }

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

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .standards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}