/* ==========================================================================
   全网吃瓜 · 全站样式表
   视觉方向：公益组织风 / 纪实摄影 / 留白排版 / 米白纸感
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #F6F2E9;
  --color-ink: #1E2A32;
  --color-accent: #A8432A;
  --color-line: #E8E1D5;
  --color-surface: #FFFFFF;
  --color-muted: #5A6670;
  --font-serif: "Songti SC", "SimSun", "Noto Serif SC", "STSong", serif;
  --font-sans: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1280px;
  --content-max: 70ch;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-soft: 0 2px 12px rgba(30, 42, 50, 0.06);
  --transition-base: 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  min-height: 100vh;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: #8A3520;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-ink);
}

p {
  margin-bottom: 1em;
}

/* --------------------------------------------------------------------------
   2. Layout 骨架
   -------------------------------------------------------------------------- */

/* 站点主体骨架 */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.site-footer {
  margin-top: auto;
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.85);
}

/* 页头 */
.site-header .header-top {
  background: var(--color-ink);
  padding: 6px 0;
}

.site-header .header-top .service-scope {
  margin: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
}

.site-header .header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px 24px;
}

.site-header .brand-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header .brand-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.02em;
}

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

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

.site-header .main-nav .nav-list li {
  position: relative;
}

.site-header .main-nav .nav-list .nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-ink);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.site-header .main-nav .nav-list .nav-link:hover {
  background: rgba(168, 67, 42, 0.08);
  color: var(--color-accent);
}

.site-header .main-nav .nav-list .nav-link.is-current {
  background: var(--color-accent);
  color: #fff;
}

/* 汉堡按钮 */
.site-header .nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.site-header .nav-toggle .toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

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

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

/* 页标题区 */
.page-header {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 8px;
}

.page-header .page-title {
  font-size: 32px;
  line-height: 1.3;
  margin-bottom: 8px;
}

/* 页脚 */
.site-footer .footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
}

.site-footer .footer-brand-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.site-footer .footer-brand-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 34ch;
}

.site-footer .footer-col h3 {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}

.site-footer .footer-col ul li {
  margin-bottom: 8px;
}

.site-footer .footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.site-footer .footer-col ul a:hover {
  color: #fff;
}

.site-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 16px 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* --------------------------------------------------------------------------
   3. 通用组件
   -------------------------------------------------------------------------- */

/* 按钮 */
.btn-primary,
.btn-secondary,
.btn-back,
.btn-service {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background: #8A3520;
  border-color: #8A3520;
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
}

.btn-secondary:hover {
  background: rgba(30, 42, 50, 0.06);
  color: var(--color-ink);
}

/* 文本链接 */
.text-link,
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
}

.text-link::after,
.arrow-link::after {
  content: "→";
  transition: transform var(--transition-base);
}

.text-link:hover::after,
.arrow-link:hover::after {
  transform: translateX(4px);
}

/* 相关链接导航 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--color-line);
}

.related-links .related-links-label {
  font-size: 14px;
  color: var(--color-muted);
}

.related-links .related-links-item {
  font-size: 14px;
}

/* 图片容器 */
figure {
  margin: 0;
}

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

figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   4. 首页
   -------------------------------------------------------------------------- */

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px 56px;
}

.hero-content h1 {
  font-size: 36px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-content .hero-lead {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.hero-content .hero-desc {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 52ch;
  margin-bottom: 24px;
}

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

.hero-media .hero-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.hero-media .hero-figure img {
  aspect-ratio: 4 / 3;
}

/* 核心事实 */
.core-facts {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px;
}

.core-facts .section-title {
  font-size: 28px;
  margin-bottom: 28px;
  text-align: center;
}

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

.fact-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}

.fact-item h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.fact-item h3::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

.fact-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* 服务分类入口 */
.service-categories {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.service-categories .section-title {
  font-size: 28px;
  text-align: center;
  padding-top: 56px;
  margin-bottom: 12px;
}

.service-categories .section-intro {
  text-align: center;
  color: var(--color-muted);
  font-size: 15px;
  max-width: 60ch;
  margin: 0 auto 32px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 56px;
}

.category-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.category-card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.category-card .category-media {
  overflow: hidden;
}

.category-card .category-media img {
  aspect-ratio: 16 / 10;
  transition: transform 0.3s ease;
}

.category-card:hover .category-media img {
  transform: scale(1.04);
}

.category-card h3 {
  font-size: 17px;
  padding: 16px 16px 4px;
}

.category-card p {
  font-size: 14px;
  color: var(--color-muted);
  padding: 0 16px;
  margin-bottom: 12px;
}

.category-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  padding: 0 16px 16px;
}

.category-card .card-link::after {
  content: "→";
  transition: transform var(--transition-base);
}

.category-card .card-link:hover::after {
  transform: translateX(3px);
}

/* 下一屏预告 */
.next-preview {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px;
}

.preview-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.preview-content h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

.preview-content p {
  color: var(--color-muted);
  max-width: 48ch;
  margin-bottom: 16px;
}

/* 公开说明预览 */
.notice-preview {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.notice-preview .section-title {
  font-size: 28px;
  text-align: center;
  padding-top: 56px;
  margin-bottom: 32px;
}

.notice-list {
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px 56px;
}

.notice-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}

.notice-item:last-child {
  border-bottom: none;
}

.notice-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.notice-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 8px;
}

/* 交付清单预览 */
.deliverables-preview {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px;
}

.deliverables-preview .section-title {
  font-size: 28px;
  margin-bottom: 12px;
}

.deliverables-preview .section-intro {
  color: var(--color-muted);
  margin-bottom: 28px;
}

.deliverables-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.deliverable-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.deliverable-item .check-mark {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin-top: 2px;
}

.deliverable-item .deliverable-text h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.deliverable-item .deliverable-text p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   5. 内页通用外壳
   -------------------------------------------------------------------------- */

.inner-main {
  width: 100%;
}

/* 页面标题区（各页共用） */
.page-title-block,
.page-title-section,
.page-title-area {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 24px 8px;
}

.page-title-block .page-title,
.page-title-section .page-title,
.page-title-area .page-title {
  font-size: 32px;
  margin-bottom: 8px;
}

.page-intro,
.page-lead {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 60ch;
  margin-bottom: 0;
}

/* 双栏布局（主内容 + 侧栏） */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  align-items: start;
}

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

.page-layout .main-content > * {
  max-width: 100%;
}

.page-layout .page-aside {
  min-width: 0;
}

.page-layout .aside-inner {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.page-layout .aside-inner h2,
.page-layout .aside-inner h3 {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.page-layout .aside-inner .anchor-list li,
.page-layout .aside-inner .aside-links li,
.page-layout .aside-inner .aside-nav-list li {
  margin-bottom: 8px;
}

.page-layout .aside-inner .anchor-list a,
.page-layout .aside-inner .aside-links a,
.page-layout .aside-inner .aside-nav-list a {
  font-size: 14px;
  color: var(--color-ink);
  display: block;
  padding: 4px 0;
}

.page-layout .aside-inner .anchor-list a:hover,
.page-layout .aside-inner .aside-links a:hover,
.page-layout .aside-inner .aside-nav-list a:hover {
  color: var(--color-accent);
}

.page-layout .aside-inner .aside-nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   6. 服务目录页
   -------------------------------------------------------------------------- */

.layout-shell {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.layout-shell .page-title-block {
  padding: 32px 0 8px;
}

.layout-shell .page-layout {
  padding: 24px 0;
}

.service-intro {
  margin-bottom: 32px;
}

.service-intro h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.service-intro p {
  color: var(--color-muted);
  max-width: 65ch;
}

.service-item {
  margin-bottom: 40px;
  scroll-margin-top: 24px;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.service-card h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.service-card > p {
  color: var(--color-muted);
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 16px;
  margin: 16px 0 8px;
  color: var(--color-accent);
}

.deliverable-list {
  margin-bottom: 16px;
}

.deliverable-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.deliverable-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.service-figure {
  margin: 32px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.service-figure img {
  aspect-ratio: 16 / 9;
  width: 100%;
}

/* 服务页相关链接 */
.main-content .related-links {
  padding: 24px 0 0;
  border-top: 1px solid var(--color-line);
}

.main-content .related-links h2 {
  font-size: 16px;
  width: 100%;
  margin-bottom: 12px;
}

.main-content .related-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  width: 100%;
  margin-bottom: 12px;
}

.main-content .related-links ul a {
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   7. 服务规范页
   -------------------------------------------------------------------------- */

.standard-page .intro-section {
  max-width: 72ch;
  padding: 0 24px;
  margin: 0 auto 32px;
}

.standard-page .intro-section p {
  color: var(--color-muted);
}

.standard-page .principles-section,
.standard-page .delivery-standard-section,
.standard-page .boundary-section,
.standard-page .public-info-section {
  max-width: 72ch;
  margin: 0 auto;
  padding: 24px;
}

.standard-page .principles-section h2,
.standard-page .delivery-standard-section h2,
.standard-page .boundary-section h2,
.standard-page .public-info-section h2 {
  font-size: 24px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.standard-page .principles-section p,
.standard-page .delivery-standard-section p,
.standard-page .boundary-section p,
.standard-page .public-info-section p {
  color: var(--color-muted);
}

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

.principle-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 20px;
}

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

.principle-item h3::before {
  content: "0" counter(principle);
  counter-increment: principle;
  display: block;
  font-size: 14px;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.principle-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.principles-section {
  counter-reset: principle;
}

.delivery-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.delivery-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.delivery-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.delivery-item p {
  font-size: 14px;
  margin-bottom: 0;
}

.boundary-list,
.public-info-list {
  margin: 16px 0;
}

.boundary-list li,
.public-info-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 15px;
}

.boundary-list li::before,
.public-info-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.public-info-list li::before {
  content: "·";
  font-weight: 700;
}

.notice-image {
  max-width: 72ch;
  margin: 32px auto;
  padding: 0 24px;
}

.notice-image img {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   8. 公开说明页
   -------------------------------------------------------------------------- */

.notice-intro {
  max-width: 72ch;
  margin: 0 auto;
  padding: 0 24px 24px;
}

.notice-intro p {
  color: var(--color-muted);
}

.notice-items {
  max-width: 72ch;
  margin: 0 auto;
  padding: 0 24px;
}

.notice-items .notice-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 20px;
}

.notice-items .notice-item h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.notice-items .notice-item p {
  color: var(--color-muted);
  font-size: 15px;
}

.notice-figure {
  max-width: 72ch;
  margin: 32px auto;
  padding: 0 24px;
}

.notice-figure img {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   9. 合作方式页
   -------------------------------------------------------------------------- */

.preparation-module {
  max-width: 72ch;
  margin: 0 auto;
  padding: 24px;
}

.preparation-module h2 {
  font-size: 24px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.preparation-module > p {
  color: var(--color-muted);
  margin-bottom: 20px;
}

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

.preparation-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.preparation-list li h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.preparation-list li h3::before {
  content: "0" counter(prep);
  counter-increment: prep;
  display: block;
  font-size: 13px;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.preparation-list li p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.preparation-module {
  counter-reset: prep;
}

.cooperation-timeline {
  max-width: 72ch;
  margin: 0 auto;
  padding: 24px;
}

.cooperation-timeline h2 {
  font-size: 24px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.cooperation-timeline > p {
  color: var(--color-muted);
  margin-bottom: 24px;
}

.timeline-item {
  position: relative;
  padding: 0 0 32px 48px;
  border-left: 2px solid var(--color-line);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
}

.timeline-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.timeline-step {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.timeline-step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

.timeline-step h3 {
  font-size: 20px;
}

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

.task-col {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px;
}

.task-col h4 {
  font-size: 14px;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.task-col p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.next-action-module {
  max-width: 72ch;
  margin: 0 auto;
  padding: 24px;
}

.next-action-module h2 {
  font-size: 24px;
  margin-bottom: 10px;
}

.next-action-module p {
  color: var(--color-muted);
  margin-bottom: 16px;
}

.action-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-accent);
  padding: 10px 0;
}

.action-link::after {
  content: "→";
  transition: transform var(--transition-base);
}

.action-link:hover::after {
  transform: translateX(4px);
}

.timeline-figure {
  max-width: 72ch;
  margin: 32px auto;
  padding: 0 24px;
}

.timeline-figure img {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   10. 意见反馈页
   -------------------------------------------------------------------------- */

.feedback-types-section,
.preparation-checklist-section,
.communication-advice-section,
.next-steps-section {
  max-width: 72ch;
  margin: 0 auto;
  padding: 24px;
}

.feedback-types-section h2,
.preparation-checklist-section h2,
.communication-advice-section h2,
.next-steps-section h2 {
  font-size: 24px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.feedback-types-section > p,
.preparation-checklist-section > p,
.communication-advice-section > p {
  color: var(--color-muted);
  margin-bottom: 20px;
}

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

.feedback-type-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.feedback-type-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.feedback-type-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.checklist-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px;
}

.checklist-item h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.checklist-item h3::before {
  content: "□";
  color: var(--color-accent);
  margin-right: 8px;
}

.checklist-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.communication-advice-section p {
  color: var(--color-muted);
}

.next-step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
}

.next-step-card h2 {
  border-bottom: none;
  padding-bottom: 0;
}

.next-step-card p {
  color: var(--color-muted);
  margin-bottom: 16px;
}

.content-figure {
  max-width: 72ch;
  margin: 32px auto;
  padding: 0 24px;
}

.content-figure img {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
}

/* 反馈页侧栏 */
.feedback-page .page-aside .aside-nav {
  margin-bottom: 28px;
}

.feedback-page .page-aside .aside-nav h2,
.feedback-page .page-aside .aside-related h2 {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.feedback-page .page-aside .aside-nav ul li,
.feedback-page .page-aside .aside-related ul li {
  margin-bottom: 8px;
}

.feedback-page .page-aside .aside-nav ul a,
.feedback-page .page-aside .aside-related ul a {
  font-size: 14px;
  color: var(--color-ink);
}

.feedback-page .page-aside .aside-nav ul a:hover,
.feedback-page .page-aside .aside-related ul a:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   11. 常见问题页
   -------------------------------------------------------------------------- */

.faq-image-block {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.faq-image-block img {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-md);
}

.faq-image-block figcaption {
  padding: 0 4px;
}

.faq-group {
  margin-bottom: 32px;
  scroll-margin-top: 24px;
}

.faq-group h2 {
  font-size: 22px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--transition-base);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item[open] summary {
  background: rgba(168, 67, 42, 0.04);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* FAQ 侧栏 */
.faq-page .page-aside .aside-nav {
  margin-bottom: 28px;
}

.faq-page .page-aside .aside-nav h3 {
  font-size: 16px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.faq-page .page-aside .aside-nav-list li {
  margin-bottom: 8px;
}

.faq-page .page-aside .aside-nav-list a {
  font-size: 14px;
  color: var(--color-ink);
  display: block;
  padding: 4px 0;
}

.faq-page .page-aside .aside-nav-list a:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   12. 404 页
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
}

.error-panel {
  max-width: 560px;
  width: 100%;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 48px 40px;
}

.error-panel .error-code {
  font-family: var(--font-serif);
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-panel .error-desc {
  color: var(--color-muted);
  font-size: 15px;
  margin-bottom: 24px;
}

.error-panel .error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 24px;
}

.btn-back {
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.btn-back:hover {
  background: #8A3520;
  border-color: #8A3520;
  color: #fff;
}

.btn-service {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
}

.btn-service:hover {
  background: rgba(30, 42, 50, 0.06);
  color: var(--color-ink);
}

.error-panel .error-help {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.error-panel .error-help a {
  margin: 0 4px;
}

/* --------------------------------------------------------------------------
   13. 响应式
   -------------------------------------------------------------------------- */

/* 平板 */
@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    gap: 32px;
    padding: 48px 24px;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 24px;
  }
}

/* 手机 */
@media (max-width: 768px) {
  .site-header .header-main {
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .site-header .brand-name {
    font-size: 20px;
  }

  .site-header .nav-toggle {
    display: flex;
  }

  .site-header .main-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .site-header .main-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    border-top: 1px solid var(--color-line);
  }

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

  .site-header .main-nav .nav-list li {
    width: 100%;
  }

  .site-header .main-nav .nav-list .nav-link {
    padding: 12px 8px;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-sm);
  }

  .breadcrumb {
    padding: 16px 16px 0;
  }

  .page-header {
    padding: 24px 16px 8px;
  }

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

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

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

  .hero-content .hero-lead {
    font-size: 18px;
  }

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

  .core-facts {
    padding: 40px 16px;
  }

  .category-grid {
    grid-template-columns: 1fr;
    padding: 0 16px 40px;
  }

  .service-categories .section-title {
    padding-top: 40px;
  }

  .next-preview {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 40px 16px;
  }

  .notice-preview .section-title {
    padding-top: 40px;
  }

  .notice-list {
    padding: 0 16px 40px;
  }

  .deliverables-preview {
    padding: 40px 16px;
  }

  .deliverables-list {
    grid-template-columns: 1fr;
  }

  /* 内页 */
  .page-title-block,
  .page-title-section,
  .page-title-area {
    padding: 24px 16px 8px;
  }

  .page-title-block .page-title,
  .page-title-section .page-title,
  .page-title-area .page-title {
    font-size: 28px;
  }

  .layout-shell {
    padding: 0 16px;
  }

  .layout-shell .page-title-block {
    padding: 24px 0 8px;
  }

  .layout-shell .page-layout {
    padding: 16px 0;
  }

  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 16px;
  }

  .page-layout .page-aside {
    order: 2;
  }

  .page-layout .main-content {
    order: 1;
  }

  /* 服务目录 */
  .service-card {
    padding: 20px;
  }

  .service-item {
    margin-bottom: 24px;
  }

  /* 服务规范 */
  .standard-page .intro-section,
  .standard-page .principles-section,
  .standard-page .delivery-standard-section,
  .standard-page .boundary-section,
  .standard-page .public-info-section {
    padding: 16px;
  }

  .principle-list {
    grid-template-columns: 1fr;
  }

  .delivery-list {
    grid-template-columns: 1fr;
  }

  .notice-image {
    padding: 0 16px;
  }

  /* 公开说明 */
  .notice-intro {
    padding: 0 16px 16px;
  }

  .notice-items {
    padding: 0 16px;
  }

  .notice-items .notice-item {
    padding: 20px;
  }

  .notice-figure {
    padding: 0 16px;
  }

  /* 合作方式 */
  .preparation-module,
  .cooperation-timeline,
  .next-action-module {
    padding: 16px;
  }

  .preparation-list {
    grid-template-columns: 1fr;
  }

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

  .timeline-item {
    padding-left: 36px;
  }

  .timeline-figure {
    padding: 0 16px;
  }

  /* 意见反馈 */
  .feedback-types-section,
  .preparation-checklist-section,
  .communication-advice-section,
  .next-steps-section {
    padding: 16px;
  }

  .feedback-type-list {
    grid-template-columns: 1fr;
  }

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

  .content-figure {
    padding: 0 16px;
  }

  /* FAQ */
  .faq-image-block {
    padding: 0 16px;
  }

  .faq-group h2 {
    font-size: 20px;
  }

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

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

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

  .site-footer .footer-bottom {
    padding: 12px 16px;
  }

  /* 404 */
  .error-main {
    padding: 40px 16px;
  }

  .error-panel {
    padding: 32px 24px;
  }

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

  .error-actions {
    flex-direction: column;
  }

  .error-actions .btn-back,
  .error-actions .btn-service {
    width: 100%;
  }

  /* 相关链接 */
  .related-links {
    padding: 16px;
    gap: 8px 16px;
  }
}

/* 小屏手机 */
@media (max-width: 390px) {
  .hero-content h1 {
    font-size: 26px;
  }

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

  .category-card h3 {
    font-size: 16px;
  }

  .deliverable-item {
    padding: 16px;
  }

  .service-card {
    padding: 16px;
  }

  .timeline-step {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .timeline-step .step-number {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
}