/* ============================================================
   911黑料吃瓜 · 整站样式
   城市服务风：公共信息感、清楚入口、温和色彩、可靠排版
   ============================================================ */

/* ============================================================
   Base
   ============================================================ */
:root {
  --color-primary: #2B6F76;
  --color-primary-dark: #225A60;
  --color-primary-light: #E9F2F3;
  --color-text: #234A5C;
  --color-text-light: #5A7282;
  --color-bg: #F5F7F8;
  --color-bg-card: #FFFFFF;
  --color-accent: #D97736;
  --color-accent-dark: #C0652B;
  --color-border: #DCE5E8;
  --color-white: #FFFFFF;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
  --container-narrow: 960px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(35, 74, 92, 0.08);
  --shadow-md: 0 4px 12px rgba(35, 74, 92, 0.1);
  --shadow-lg: 0 8px 24px rgba(35, 74, 92, 0.12);
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

ul,
ol {
  list-style-position: inside;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-text);
  line-height: 1.4;
  font-weight: 600;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 0.5em;
}

/* ============================================================
   Layout — 全站骨架
   ============================================================ */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-home {
  width: 100%;
}

.site-inner {
  width: 100%;
}

.home-main,
.inner-main {
  width: 100%;
}

.home-main > section,
.inner-main > section,
.inner-main > div,
.inner-main > nav {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 页头 */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

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

.brand-logo a {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand-logo a:hover {
  color: var(--color-primary-dark);
  text-decoration: none;
}

.brand-slogan {
  font-size: 13px;
  color: var(--color-text-light);
  margin: 0;
  white-space: nowrap;
  display: none;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 8px;
}

.main-nav a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background-color var(--transition), color var(--transition);
}

.main-nav a:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  text-decoration: none;
}

.main-nav a.is-current {
  color: var(--color-white);
  background-color: var(--color-primary);
  font-weight: 500;
}

.main-nav a.is-current:hover {
  color: var(--color-white);
  background-color: var(--color-primary-dark);
}

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

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 页脚 */
.site-footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.85);
  margin-top: 64px;
}

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

.footer-group h2 {
  color: var(--color-white);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-group ul {
  list-style: none;
}

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

.footer-group a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color var(--transition);
}

.footer-group a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-top: 12px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white) !important;
  margin-bottom: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

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

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

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

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

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

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.page-title-area,
.page-title-block,
.page-title-wrap {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px 24px 24px;
}

.page-title-area p,
.page-title-block p,
.page-title-wrap p {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 720px;
  margin: 0;
}

/* ============================================================
   Components — 通用组件
   ============================================================ */

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  min-height: 44px;
  line-height: 1.4;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white) !important;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary-light);
  text-decoration: none;
}

/* 图片容器 */
figure {
  margin: 0;
}

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

/* 相关链接 */
.related-links {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--color-border);
}

.related-links-label {
  font-size: 14px;
  color: var(--color-text-light);
  font-weight: 500;
}

.related-links-item {
  font-size: 14px;
  color: var(--color-primary);
  text-decoration: none;
  padding: 6px 14px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.related-links-item:hover {
  border-color: var(--color-primary);
  text-decoration: none;
  background-color: var(--color-primary-light);
}

/* ============================================================
   Components — 首页
   ============================================================ */

/* Hero */
.hero-section {
  background-color: var(--color-primary-light);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.hero-section > * {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.hero-content h1 {
  font-size: 32px;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-lead {
  font-size: 17px;
  color: var(--color-text-light);
  max-width: 640px;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-media {
  max-width: var(--container-width);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.hero-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* 内容媒体（首页 hero 图下的说明图） */
.content-media {
  max-width: var(--container-width);
  margin: 32px auto 0;
  padding: 0 24px;
}

.content-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.content-media figcaption {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 12px 4px 0;
  text-align: center;
}

/* 公告栏 + 快捷入口 */
.notice-and-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.notice-panel,
.quick-entry {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.notice-panel h2,
.quick-entry h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
}

.notice-panel ul,
.quick-entry ul {
  list-style: none;
}

.notice-panel li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 15px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.notice-panel li:last-child,
.quick-entry li:last-child {
  border-bottom: none;
}

.notice-panel li::before {
  content: "▸";
  color: var(--color-primary);
  flex-shrink: 0;
}

.quick-entry li a {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--color-text);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
}

.quick-entry li a:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Section 通用头部 */
.section-heading {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.section-heading h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-heading p {
  font-size: 16px;
  color: var(--color-text-light);
}

/* 服务概览 */
.service-overview {
  padding: 64px 0 0;
}

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

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background-color: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--color-primary);
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.service-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.service-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.service-card a:hover {
  text-decoration: underline;
}

/* 工作方法预览 */
.method-preview {
  padding: 64px 0 0;
}

.method-preview .method-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.method-preview .step-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  transition: box-shadow var(--transition);
}

.method-preview .step-item:hover {
  box-shadow: var(--shadow-md);
}

.method-preview .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.method-preview .step-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.method-preview .step-item p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

.method-link {
  text-align: center;
  margin-top: 32px;
}

.method-link a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.method-link a:hover {
  text-decoration: underline;
}

/* 资源指南入口 */
.resource-preview {
  padding: 64px 0 0;
}

.resource-group-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.resource-group {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow var(--transition);
}

.resource-group:hover {
  box-shadow: var(--shadow-md);
}

.resource-group h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.resource-group p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.resource-group a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
}

.resource-group a:hover {
  text-decoration: underline;
}

/* FAQ 摘要 */
.faq-preview {
  padding: 64px 0 0;
}

.faq-preview .faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: box-shadow var(--transition);
}

.faq-preview .faq-item[open] {
  box-shadow: var(--shadow-sm);
}

.faq-preview summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
}

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

.faq-preview summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-primary);
}

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

.faq-preview .faq-item p {
  padding: 0 20px 16px;
  font-size: 15px;
  color: var(--color-text-light);
  margin: 0;
}

.faq-link {
  text-align: center;
  margin-top: 24px;
}

.faq-link a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.faq-link a:hover {
  text-decoration: underline;
}

/* 合作引导 */
.contact-cta {
  padding: 64px 0 0;
  text-align: center;
}

.contact-cta h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

.contact-cta p {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 640px;
  margin: 0 auto 24px;
}

/* ============================================================
   Pages — 内页通用
   ============================================================ */

.inner-main {
  padding-bottom: 64px;
}

/* ============================================================
   Pages — services.html
   ============================================================ */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.layout-shell.sidebar-left {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: start;
}

.service-menu {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: 96px;
}

.service-menu h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
}

.service-menu ul {
  list-style: none;
  margin-bottom: 20px;
}

.service-menu li {
  margin-bottom: 4px;
}

.service-menu li a {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition);
  text-decoration: none;
}

.service-menu li a:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.menu-note {
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.menu-note p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 8px;
}

.service-detail {
  min-width: 0;
}

.service-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
  overflow: hidden;
}

.service-figure {
  width: 100%;
}

.service-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.service-content {
  padding: 32px;
}

.service-content h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.service-content p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.service-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.meta-item {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 16px;
}

.meta-item strong {
  display: block;
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.meta-item span {
  font-size: 14px;
  color: var(--color-text-light);
}

.service-bottom-note {
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 8px;
}

.service-bottom-note p {
  font-size: 14px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.service-bottom-note p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Pages — method.html
   ============================================================ */
.method-intro {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.method-hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.method-hero-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.method-intro-text h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.method-intro-text p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.method-steps {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.method-steps h2 {
  font-size: 24px;
  margin-bottom: 24px;
  text-align: center;
}

.method-step {
  display: flex;
  gap: 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  transition: box-shadow var(--transition);
}

.method-step:hover {
  box-shadow: var(--shadow-sm);
}

.method-step .step-number {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 18px;
  font-weight: 700;
  border-radius: 50%;
}

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

.method-step .step-content h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.method-step .step-core {
  font-size: 15px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.method-step .step-content p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.method-step .step-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.method-step .step-meta p {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 13px;
  margin: 0;
}

.method-step .step-meta strong {
  display: block;
  font-size: 12px;
  color: var(--color-primary);
  margin-bottom: 2px;
}

/* 角色分工表 */
.role-table-section {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.role-table-section h2 {
  font-size: 24px;
  text-align: center;
  margin-bottom: 8px;
}

.role-table-section > p {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.table-wrapper {
  overflow-x: auto;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.role-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.role-table th,
.role-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.role-table thead th {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 15px;
}

.role-table tbody th {
  background-color: var(--color-bg);
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  width: 140px;
}

.role-table tbody tr:last-child th,
.role-table tbody tr:last-child td {
  border-bottom: none;
}

/* 方法页 CTA */
.method-cta {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 48px 24px;
  text-align: center;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-lg);
}

.method-cta h2 {
  font-size: 24px;
  margin-bottom: 12px;
}

.method-cta p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ============================================================
   Pages — guide.html
   ============================================================ */
.resource-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 8px;
}

.resource-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition);
}

.resource-card:hover {
  box-shadow: var(--shadow-md);
}

.resource-image-wrap {
  width: 100%;
}

.resource-image-wrap img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.resource-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.resource-body h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.resource-body > p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.resource-meta {
  margin-bottom: 16px;
}

.resource-meta h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.resource-meta ul {
  list-style: disc;
  padding-left: 20px;
}

.resource-meta li {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 4px;
}

.resource-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  display: inline-block;
}

.resource-link:hover {
  text-decoration: underline;
}

/* ============================================================
   Pages — faq.html
   ============================================================ */
.faq-list-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.faq-list .faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: box-shadow var(--transition);
}

.faq-list .faq-item[open] {
  box-shadow: var(--shadow-sm);
}

.faq-list summary {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  color: var(--color-primary);
}

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

.faq-answer {
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.8;
}

/* 合作方式补充说明 */
.cooperation-note {
  max-width: 860px;
  margin: 48px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 24px;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cooperation-figure {
  width: 100%;
}

.cooperation-figure img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.cooperation-content {
  padding: 32px 32px 32px 0;
}

.cooperation-content h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.cooperation-content p {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.cooperation-content a {
  color: var(--color-primary);
  font-weight: 500;
}

/* ============================================================
   Pages — about.html
   ============================================================ */
.about-intro {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}

.intro-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.intro-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.intro-text h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.intro-text p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
  line-height: 1.8;
}

/* 服务原则 */
.principles-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.principles-section h2 {
  font-size: 24px;
  text-align: center;
  margin-bottom: 8px;
}

.principles-lead {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

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

.principle-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: box-shadow var(--transition);
}

.principle-card:hover {
  box-shadow: var(--shadow-md);
}

.principle-card h3 {
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.principle-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

/* 边界说明 */
.about-boundary {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.about-boundary h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.about-boundary > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.boundary-list {
  list-style: disc;
  padding-left: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

.boundary-list li {
  font-size: 14px;
  color: var(--color-text-light);
}

/* 关于页 CTA */
.about-cta {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px;
  text-align: center;
  background-color: var(--color-primary-light);
  border-radius: var(--radius-lg);
}

.about-cta h2 {
  font-size: 24px;
  margin-bottom: 12px;
}

.about-cta p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

/* ============================================================
   Pages — contact.html
   ============================================================ */
.prep-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.prep-list h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.prep-list > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

.prep-list ul {
  list-style: none;
  counter-reset: item;
}

.prep-list li {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 10px;
  font-size: 15px;
  position: relative;
  padding-left: 48px;
}

.prep-list li::before {
  content: counter(item);
  counter-increment: item;
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 合作流程 */
.process-steps {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.process-steps h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.process-steps > p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
}

.process-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.process-list li {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.process-list .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.process-list h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.process-list p {
  font-size: 14px;
  color: var(--color-text-light);
  margin: 0;
}

/* 反馈说明 */
.feedback-note {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.feedback-note h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.feedback-note p {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

/* 联系页图片 */
.contact-image {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.contact-image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.contact-image figcaption {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 12px 4px 0;
  text-align: center;
}

/* ============================================================
   Pages — 404.html
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-panel {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  max-width: 560px;
  width: 100%;
  box-shadow: var(--shadow-sm);
}

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

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

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

.error-action {
  margin-bottom: 24px;
}

.error-help {
  font-size: 14px;
  color: var(--color-text-light);
}

.error-help a {
  margin: 0 8px;
}

/* ============================================================
   Responsive — 桌面端
   ============================================================ */
@media (min-width: 1024px) {
  .brand-slogan {
    display: block;
  }
}

/* ============================================================
   Responsive — 平板端
   ============================================================ */
@media (max-width: 1023px) and (min-width: 769px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

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

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

  .resource-group-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

  .layout-shell.sidebar-left {
    grid-template-columns: 220px 1fr;
    gap: 24px;
  }
}

/* ============================================================
   Responsive — 移动端
   ============================================================ */
@media (max-width: 768px) {
  .header-inner {
    height: 64px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand-logo a {
    font-size: 20px;
  }

  .brand-slogan {
    display: none;
  }

  /* 汉堡菜单 */
  .nav-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    z-index: 99;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 8px 16px 16px;
    gap: 4px;
  }

  .main-nav a {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }

  .main-nav a.is-current {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
  }

  /* 页面容器 */
  .home-main > section,
  .inner-main > section,
  .inner-main > div,
  .inner-main > nav {
    padding-left: 16px;
    padding-right: 16px;
  }

  .breadcrumb {
    padding: 16px 16px 0;
    flex-wrap: wrap;
  }

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

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

  .page-title-area,
  .page-title-block,
  .page-title-wrap {
    padding: 8px 16px 20px;
  }

  /* 首页 Hero */
  .hero-section {
    padding: 32px 0;
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
    text-align: center;
  }

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

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

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

  /* 公告栏 */
  .notice-and-entry {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px 16px 0;
  }

  /* 服务概览 */
  .service-overview {
    padding: 48px 0 0;
  }

  .service-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .service-card {
    padding: 24px 20px;
  }

  /* 方法预览 */
  .method-preview {
    padding: 48px 0 0;
  }

  .method-preview .method-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .method-preview .step-item {
    padding: 20px;
  }

  /* 资源预览 */
  .resource-preview {
    padding: 48px 0 0;
  }

  .resource-group-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .resource-group {
    padding: 24px 20px;
  }

  /* FAQ 预览 */
  .faq-preview {
    padding: 48px 0 0;
  }

  /* 合作引导 */
  .contact-cta {
    padding: 48px 0 0;
  }

  .contact-cta .btn-primary {
    width: 100%;
    max-width: 320px;
  }

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

  .footer-group {
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-group:last-of-type {
    border-bottom: none;
  }

  .footer-bottom {
    padding: 16px;
  }

  /* 内页 services */
  .layout-shell {
    padding: 0 16px;
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .service-menu {
    position: static;
    padding: 16px;
  }

  .service-menu ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .service-menu li {
    margin: 0;
  }

  .service-menu li a {
    padding: 8px 14px;
    background-color: var(--color-bg);
    border-radius: var(--radius-sm);
  }

  .service-menu li a:hover {
    background-color: var(--color-primary-light);
  }

  .service-content {
    padding: 20px;
  }

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

  .service-meta {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* method 页 */
  .method-intro,
  .method-steps,
  .role-table-section,
  .method-cta {
    padding-left: 16px;
    padding-right: 16px;
  }

  .method-hero-image img {
    height: 200px;
  }

  .method-step {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }

  .method-step .step-number {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .method-step .step-meta {
    grid-template-columns: 1fr;
  }

  .role-table thead {
    display: none;
  }

  .role-table,
  .role-table tbody,
  .role-table tr,
  .role-table td {
    display: block;
    width: 100%;
  }

  .role-table tbody th {
    display: block;
    width: 100%;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 15px;
    padding: 12px 16px;
  }

  .role-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .role-table tbody tr {
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
  }

  .role-table tbody tr:last-child {
    margin-bottom: 0;
  }

  .role-table tbody tr:last-child td {
    border-bottom: none;
  }

  .cta-links {
    flex-direction: column;
    align-items: center;
  }

  .cta-links .btn-primary,
  .cta-links .btn-secondary {
    width: 100%;
    max-width: 320px;
  }

  /* guide 页 */
  .resource-groups {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .resource-image-wrap img {
    height: 180px;
  }

  /* faq 页 */
  .faq-list-wrap,
  .cooperation-note {
    padding-left: 16px;
    padding-right: 16px;
  }

  .cooperation-note {
    grid-template-columns: 1fr;
  }

  .cooperation-figure img {
    min-height: 180px;
    height: 180px;
  }

  .cooperation-content {
    padding: 20px;
  }

  .faq-list summary {
    padding: 16px 20px;
    padding-right: 40px;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 20px 16px;
  }

  /* about 页 */
  .about-intro {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .intro-media img {
    height: 220px;
  }

  .principles-section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .principles-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .about-boundary {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .about-cta {
    margin-left: 16px;
    margin-right: 16px;
    padding: 32px 20px;
  }

  .about-cta .cta-links {
    flex-direction: column;
    align-items: center;
  }

  .about-cta .cta-links a {
    width: 100%;
    max-width: 320px;
    text-align: center;
  }

  /* contact 页 */
  .prep-list,
  .process-steps,
  .feedback-note,
  .contact-image {
    padding-left: 16px;
    padding-right: 16px;
  }

  .process-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .process-list li {
    padding: 20px;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .process-list .step-num {
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .process-list h3 {
    margin-bottom: 4px;
  }

  .contact-image img {
    height: 200px;
  }

  /* 404 */
  .error-panel {
    padding: 32px 24px;
  }

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

  .related-links {
    padding: 16px;
    margin-top: 32px;
  }
}

/* ============================================================
   Responsive — 超小屏
   ============================================================ */
@media (max-width: 400px) {
  .header-inner {
    padding: 0 12px;
  }

  .brand-logo a {
    font-size: 18px;
  }

  .main-nav a {
    font-size: 15px;
  }

  .home-main > section,
  .inner-main > section,
  .inner-main > div,
  .inner-main > nav {
    padding-left: 12px;
    padding-right: 12px;
  }

  .breadcrumb {
    padding: 14px 12px 0;
  }

  .page-header {
    padding: 20px 12px 8px;
  }

  .notice-and-entry {
    padding-left: 12px;
    padding-right: 12px;
  }

  .service-content {
    padding: 16px;
  }

  .method-step .step-meta {
    grid-template-columns: 1fr;
  }

  .resource-body {
    padding: 20px;
  }
}