/* ==========================================================================
   Base — 全站基础样式
   ========================================================================== */

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #1F2937;
  background-color: #FFFFFF;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #0F766E;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #115E59;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.4;
  color: #1F2937;
}

h1 {
  font-size: 32px;
  font-weight: 700;
}

h2 {
  font-size: 24px;
  font-weight: 600;
}

h3 {
  font-size: 18px;
  font-weight: 600;
}

p {
  margin-bottom: 0;
}

figure {
  margin: 0;
}

/* ==========================================================================
   Layout — 全站布局骨架
   ========================================================================== */

.site-header {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E5E7EB;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #1F2937;
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 13px;
  color: #6B7280;
  white-space: nowrap;
}

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

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

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: #4B5563;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: #0F766E;
  background-color: #F3F4F6;
}

.nav-link.is-current {
  color: #0F766E;
  font-weight: 600;
  background-color: #ECFDF5;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 6px;
}

.nav-toggle:hover {
  background-color: #F3F4F6;
}

.toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #1F2937;
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

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

/* 面包屑 */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 14px;
  color: #6B7280;
}

.breadcrumb a {
  color: #6B7280;
}

.breadcrumb a:hover {
  color: #0F766E;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: #9CA3AF;
}

.breadcrumb-current {
  color: #1F2937;
}

.breadcrumb-nav {
  background-color: #F9FAFB;
  border-bottom: 1px solid #E5E7EB;
}

.breadcrumb-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #6B7280;
}

.breadcrumb-list a {
  color: #6B7280;
}

.breadcrumb-list a:hover {
  color: #0F766E;
}

/* 页脚 */
.site-footer {
  background-color: #F9FAFB;
  border-top: 1px solid #E5E7EB;
  margin-top: 64px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #1F2937;
  margin-bottom: 8px;
}

.footer-slogan {
  font-size: 14px;
  color: #0F766E;
  margin-bottom: 12px;
  font-weight: 500;
}

.footer-desc {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  max-width: 360px;
}

.footer-column h3 {
  font-size: 15px;
  color: #1F2937;
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-column a {
  font-size: 14px;
  color: #6B7280;
}

.footer-column a:hover {
  color: #0F766E;
}

.footer-copyright {
  grid-column: 1 / -1;
  border-top: 1px solid #E5E7EB;
  padding-top: 24px;
  margin-top: 8px;
  font-size: 13px;
  color: #9CA3AF;
  text-align: center;
}

/* 页内布局 */
.page-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

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

/* 页面标题区 */
.page-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: #1F2937;
  line-height: 1.3;
}

.page-intro {
  font-size: 16px;
  color: #6B7280;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 720px;
}

.page-title-block {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
}

.page-title-area {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
}

.page-title-inner {
  max-width: 720px;
}

/* 相关内容导航 */
.related-links {
  max-width: 1200px;
  margin: 48px auto 0;
  padding: 20px 24px;
  border-top: 1px solid #E5E7EB;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: #1F2937;
  margin-right: 4px;
}

.related-links-item {
  font-size: 14px;
  color: #0F766E;
  padding: 6px 14px;
  border: 1px solid #D1FAE5;
  border-radius: 6px;
  background-color: #F0FDF9;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.related-links-item:hover {
  background-color: #D1FAE5;
  border-color: #0F766E;
}

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
  min-height: 44px;
}

.btn-primary {
  background-color: #0F766E;
  color: #FFFFFF;
  border: 1px solid #0F766E;
}

.btn-primary:hover {
  background-color: #115E59;
  border-color: #115E59;
  color: #FFFFFF;
}

.btn-secondary {
  background-color: #FFFFFF;
  color: #0F766E;
  border: 1px solid #0F766E;
}

.btn-secondary:hover {
  background-color: #F0FDF9;
  color: #115E59;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 600;
  color: #0F766E;
  border: none;
  background: none;
  cursor: pointer;
}

.btn-text::after {
  content: "→";
  transition: transform 0.2s ease;
}

.btn-text:hover::after {
  transform: translateX(4px);
}

/* 区块标题与说明 */
.section-intro {
  font-size: 15px;
  color: #6B7280;
  line-height: 1.7;
  margin-top: 8px;
  max-width: 640px;
}

.section-desc {
  font-size: 15px;
  color: #6B7280;
  line-height: 1.7;
  margin-top: 8px;
  max-width: 640px;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
}

/* 侧栏通用 */
.sidebar-right-panel,
.sidebar-anchor,
.knowledge-directory {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  position: sticky;
  top: 88px;
}

.sidebar-right-panel h2,
.sidebar-anchor h2,
.knowledge-directory h2,
.anchor-nav h2 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E5E7EB;
}

/* 版本标签 */
.version-tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  color: #0F766E;
  background-color: #ECFDF5;
  border-radius: 4px;
  white-space: nowrap;
}

/* ==========================================================================
   Pages — 首页
   ========================================================================== */

/* Hero */
.hero-section {
  background-color: #F9FAFB;
  border-bottom: 1px solid #E5E7EB;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: #1F2937;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: #4B5563;
  margin-bottom: 24px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.capability-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.capability-tags li {
  padding: 6px 14px;
  font-size: 13px;
  color: #4B5563;
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 6px;
}

.hero-media {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

/* 首页三栏布局 */
.homepage-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
}

/* 左侧栏 */
.service-nav-card,
.resource-card {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 24px;
}

.service-nav-card h2,
.resource-card h2 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E5E7EB;
}

.service-nav-list li {
  padding: 12px 0;
  border-bottom: 1px solid #F3F4F6;
}

.service-nav-list li:last-child {
  border-bottom: none;
}

.service-nav-list a {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 4px;
}

.service-nav-list a:hover {
  color: #0F766E;
}

.service-nav-list p {
  font-size: 13px;
  color: #6B7280;
  line-height: 1.6;
}

.resource-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.resource-tag-list a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  color: #4B5563;
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.resource-tag-list a:hover {
  color: #0F766E;
  border-color: #0F766E;
  background-color: #F0FDF9;
}

/* 中间内容区 */
.homepage-center {
  min-width: 0;
}

.service-matrix-section,
.process-summary-section,
.knowledge-preview-section {
  margin-bottom: 48px;
}

.service-matrix-section h2,
.process-summary-section h2,
.knowledge-preview-section h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

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

.matrix-card {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 20px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.matrix-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.matrix-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 16px;
}

.matrix-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.card-scene {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.7;
  margin-bottom: 8px;
}

.card-deliverable {
  font-size: 13px;
  color: #6B7280;
  line-height: 1.6;
}

/* 流程摘要 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
  counter-reset: step;
}

.step-item {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 20px;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #0F766E;
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.6;
}

.process-summary-section .btn-text {
  margin-top: 20px;
}

/* 知识精选 */
.knowledge-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.knowledge-card {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.knowledge-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.knowledge-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
}

.knowledge-card p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 16px;
}

.card-link {
  font-size: 14px;
  font-weight: 600;
  color: #0F766E;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

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

/* 右侧栏 */
.update-card,
.faq-anchor-card {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 24px;
}

.update-card h2,
.faq-anchor-card h2 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E5E7EB;
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.update-item {
  padding-bottom: 16px;
  border-bottom: 1px solid #F3F4F6;
}

.update-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.update-item .version-tag {
  margin-bottom: 8px;
}

.update-item p {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.6;
  margin-top: 6px;
}

.faq-anchor-list li {
  padding: 10px 0;
  border-bottom: 1px solid #F3F4F6;
}

.faq-anchor-list li:last-child {
  border-bottom: none;
}

.faq-anchor-list a {
  font-size: 14px;
  color: #4B5563;
  display: block;
}

.faq-anchor-list a:hover {
  color: #0F766E;
}

/* ==========================================================================
   Pages — 服务页
   ========================================================================== */

.service-grid-section,
.match-tip-section,
.package-note-section {
  margin-bottom: 48px;
}

.service-grid-section h2,
.match-tip-section h2,
.package-note-section h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

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

.service-card {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.service-figure {
  width: 100%;
  height: 180px;
  overflow: hidden;
}

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

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #1F2937;
  padding: 20px 20px 0;
}

.service-scene {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.7;
  padding: 8px 20px 0;
}

.service-work {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  padding: 8px 20px 0;
}

.deliverable-list {
  padding: 12px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.deliverable-list li {
  font-size: 13px;
  color: #6B7280;
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.deliverable-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: #0F766E;
  border-radius: 50%;
}

/* 匹配建议 */
.match-tip-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.tip-card {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.tip-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.tip-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
}

.tip-card p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 16px;
}

.tip-card a {
  font-size: 14px;
  font-weight: 600;
  color: #0F766E;
}

/* 服务包组合 */
.package-note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.package-item {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
}

.package-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
}

.package-item p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 8px;
}

/* 侧栏锚点 */
.anchor-nav {
  position: sticky;
  top: 88px;
}

.anchor-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.anchor-nav a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: #4B5563;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.anchor-nav a:hover {
  background-color: #ECFDF5;
  color: #0F766E;
}

/* ==========================================================================
   Pages — 合作流程页
   ========================================================================== */

.timeline-section,
.checklist-section,
.decision-section {
  margin-bottom: 48px;
}

.timeline-section h2,
.checklist-section h2,
.decision-section h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.process-figure {
  margin: 24px 0;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E5E7EB;
}

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

.process-figure figcaption {
  padding: 12px 20px;
  font-size: 13px;
  color: #6B7280;
  background-color: #F9FAFB;
  border-top: 1px solid #E5E7EB;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.timeline-item {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  position: relative;
}

.timeline-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #0F766E;
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  border-radius: 50%;
  margin-bottom: 16px;
}

.timeline-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
}

.timeline-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-label {
  font-size: 13px;
  font-weight: 600;
  color: #0F766E;
  margin-top: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.6;
}

.timeline-content ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 16px;
}

.timeline-content ul li {
  font-size: 13px;
  color: #6B7280;
  line-height: 1.6;
  list-style: disc;
}

/* 准备清单 */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.checklist-item {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 20px;
  transition: box-shadow 0.2s ease;
}

.checklist-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.checklist-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.checklist-item p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
}

/* 决策要点 */
.decision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.decision-card {
  background-color: #F0FDF9;
  border: 1px solid #D1FAE5;
  border-radius: 8px;
  padding: 24px;
}

.decision-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
}

.decision-card p {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.7;
}

.cta-note {
  margin-top: 24px;
  padding: 24px;
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}

.cta-note p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  flex: 1 1 100%;
}

.cta-note a {
  font-size: 14px;
  font-weight: 600;
  color: #0F766E;
  padding: 10px 20px;
  border: 1px solid #0F766E;
  border-radius: 6px;
  display: inline-block;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.cta-note a:hover {
  background-color: #0F766E;
  color: #FFFFFF;
}

/* ==========================================================================
   Pages — 知识中心页
   ========================================================================== */

.layout-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.knowledge-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
  padding-top: 24px;
  padding-bottom: 48px;
}

.knowledge-layout .inner-main {
  min-width: 0;
}

.content-section {
  margin-bottom: 56px;
  scroll-margin-top: 88px;
}

.content-section h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

/* 入门指南 */
.intro-guide-block {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 24px;
  margin-top: 24px;
  align-items: start;
}

.guide-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E5E7EB;
}

.guide-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.guide-text p {
  font-size: 15px;
  color: #4B5563;
  line-height: 1.8;
  margin-bottom: 16px;
}

.guide-text p:last-child {
  margin-bottom: 0;
}

/* 任务教程 */
.tutorial-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 24px;
}

.tutorial-item {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
}

.tutorial-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.tutorial-item > p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 16px;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 20px;
  margin-bottom: 16px;
}

.step-list li {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.7;
  list-style: decimal;
}

.tutorial-item > p:last-child {
  margin-bottom: 0;
  font-size: 13px;
  color: #0F766E;
  font-weight: 500;
}

/* 常见错误 */
.error-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.error-item {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 20px 24px;
  border-left: 4px solid #DC2626;
}

.error-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.error-desc {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 8px;
}

.error-fix {
  font-size: 14px;
  color: #0F766E;
  line-height: 1.7;
  font-weight: 500;
}

/* 进阶技巧 */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.tips-grid .tip-card {
  background-color: #FFFFFF;
  padding: 0;
  overflow: hidden;
}

.tip-figure {
  width: 100%;
  height: 120px;
  overflow: hidden;
}

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

.tips-grid .tip-card h3 {
  padding: 16px 20px 0;
  margin-bottom: 8px;
}

.tips-grid .tip-card p {
  padding: 0 20px 20px;
  margin-bottom: 0;
}

/* 版本更新 */
.version-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.version-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 16px 20px;
}

.version-item .version-tag {
  flex-shrink: 0;
  margin-top: 2px;
}

.version-desc {
  font-size: 14px;
  color: #4B5563;
  line-height: 1.7;
}

/* 知识中心目录 */
.knowledge-directory {
  position: sticky;
  top: 88px;
}

.directory-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 24px;
}

.directory-list a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: #4B5563;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.directory-list a:hover {
  background-color: #ECFDF5;
  color: #0F766E;
}

.directory-link-block {
  border-top: 1px solid #E5E7EB;
  padding-top: 20px;
}

.directory-link-block h3 {
  font-size: 15px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
}

.directory-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.directory-links a {
  font-size: 14px;
  color: #6B7280;
}

.directory-links a:hover {
  color: #0F766E;
}

/* ==========================================================================
   Pages — 关于我们页
   ========================================================================== */

.brand-story,
.principles-section,
.boundaries-section,
.cooperation-note {
  margin-bottom: 56px;
}

.brand-story {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 40px;
  align-items: center;
  margin-top: 24px;
}

.brand-story-text h2,
.principles-section h2,
.boundaries-section h2,
.cooperation-note h2 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 16px;
}

.brand-story-text p {
  font-size: 15px;
  color: #4B5563;
  line-height: 1.8;
  margin-bottom: 16px;
}

.brand-story-text p:last-child {
  margin-bottom: 0;
}

.brand-story-media {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E5E7EB;
}

.brand-story-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.brand-story-media figcaption {
  padding: 12px 20px;
  font-size: 13px;
  color: #6B7280;
  background-color: #F9FAFB;
  border-top: 1px solid #E5E7EB;
}

/* 服务原则 */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.principle-card {
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.principle-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.principle-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid #0F766E;
  display: inline-block;
}

.principle-card p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
}

/* 合规边界 */
.boundaries-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.boundaries-list li {
  background-color: #FFFFFF;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 20px;
  border-top: 3px solid #DC2626;
}

.boundaries-list h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 8px;
}

.boundaries-list p {
  font-size: 14px;
  color: #6B7280;
  line-height: 1.7;
}

/* 合作说明 */
.cooperation-note {
  background-color: #F0FDF9;
  border: 1px solid #D1FAE5;
  border-radius: 8px;
  padding: 32px;
}

.cooperation-note h2 {
  margin-bottom: 16px;
}

.cooperation-note p {
  font-size: 15px;
  color: #4B5563;
  line-height: 1.8;
  margin-bottom: 12px;
}

.cooperation-note a {
  display: inline-block;
  margin-right: 12px;
  margin-top: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  background-color: #0F766E;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.cooperation-note a:hover {
  background-color: #115E59;
}

/* ==========================================================================
   Pages — 404 页面
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 48px 24px;
}

.error-panel {
  text-align: center;
  max-width: 480px;
  padding: 48px 40px;
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: #0F766E;
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 24px;
  font-weight: 600;
  color: #1F2937;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 15px;
  color: #6B7280;
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-link {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  background-color: #0F766E;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.error-link:hover {
  background-color: #115E59;
  color: #FFFFFF;
}

/* ==========================================================================
   Responsive — 响应式断点
   ========================================================================== */

/* 1024px 断点 */
@media (max-width: 1024px) {
  .homepage-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .sidebar-right-panel {
    grid-column: 1 / -1;
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .update-card,
  .faq-anchor-card {
    margin-bottom: 0;
  }

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

  .page-layout.sidebar-left {
    grid-template-columns: 220px minmax(0, 1fr);
  }

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

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

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

/* 768px 断点 */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    height: 60px;
  }

  .brand-tagline {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    border-bottom: 1px solid #E5E7EB;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    gap: 0;
  }

  .nav-list.is-open {
    display: flex;
    max-height: none;
  }

  .site-nav:has(.nav-list.is-open) {
    max-height: 400px;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 6px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px;
  }

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

  .hero-media img {
    min-height: 200px;
  }

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

  .sidebar-left-panel {
    order: 2;
  }

  .homepage-center {
    order: 1;
  }

  .sidebar-right-panel {
    order: 3;
    grid-column: 1;
    grid-template-columns: 1fr;
  }

  .service-matrix-grid,
  .knowledge-card-grid {
    grid-template-columns: 1fr;
  }

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

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

  .main-content {
    order: 1;
  }

  .sidebar-anchor {
    order: 2;
    position: static;
  }

  .sidebar-right {
    order: 2;
    position: static;
  }

  .page-header,
  .page-title-block,
  .page-title-area {
    padding: 16px 16px 0;
  }

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

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

  .match-tip-grid,
  .package-note-grid,
  .decision-grid,
  .checklist-grid {
    grid-template-columns: 1fr;
  }

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

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

  .knowledge-layout .inner-main {
    order: 1;
  }

  .knowledge-directory {
    order: 2;
    position: static;
  }

  .intro-guide-block {
    grid-template-columns: 1fr;
  }

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

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

  .principles-grid,
  .boundaries-list {
    grid-template-columns: 1fr;
  }

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

  .footer-copyright {
    grid-column: 1;
  }

  .breadcrumb {
    padding: 12px 16px 0;
  }

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

  .related-links {
    margin: 32px auto 0;
    padding: 16px;
  }

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

  .cta-note {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-note a {
    margin-right: 0;
  }
}

/* 480px 断点 */
@media (max-width: 480px) {
  .brand-name {
    font-size: 18px;
  }

  .hero-content {
    padding: 24px 16px;
  }

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

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .capability-tags {
    gap: 6px;
  }

  .capability-tags li {
    padding: 4px 10px;
    font-size: 12px;
  }

  .process-steps {
    grid-template-columns: 1fr;
  }

  .service-matrix-section h2,
  .process-summary-section h2,
  .knowledge-preview-section h2,
  .service-grid-section h2,
  .match-tip-section h2,
  .package-note-section h2,
  .timeline-section h2,
  .checklist-section h2,
  .decision-section h2,
  .content-section h2,
  .brand-story-text h2,
  .principles-section h2,
  .boundaries-section h2,
  .cooperation-note h2 {
    font-size: 20px;
  }

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

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

  .matrix-card,
  .knowledge-card,
  .service-card,
  .tip-card,
  .package-item,
  .timeline-item,
  .checklist-item,
  .decision-card,
  .tutorial-item,
  .error-item,
  .principle-card,
  .boundaries-list li {
    padding: 16px;
  }

  .deliverable-list {
    padding: 12px 16px 16px;
  }

  .service-card h3 {
    padding: 16px 16px 0;
  }

  .service-scene,
  .service-work {
    padding: 8px 16px 0;
  }

  .sidebar-right-panel,
  .sidebar-anchor,
  .knowledge-directory {
    padding: 16px;
  }

  .footer-inner {
    padding: 24px 16px;
  }

  .cooperation-note {
    padding: 20px;
  }

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

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

  .version-item {
    padding: 12px 16px;
  }
}

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}