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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: #1D1B1A;
  background-color: #F5F4F1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #B5654A;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #8F4A34;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* 通用容器 */
.site-header,
.site-footer,
.site-main,
.inner-main,
.home-main {
  width: 100%;
}

/* ============================================================
   LAYOUT — 全站骨架
   ============================================================ */

/* 页头 */
.site-header {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E8E4DF;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #1D1B1A;
  letter-spacing: 0.02em;
}

.brand:hover .brand-name {
  color: #B5654A;
}

/* 导航 */
.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-group {
  position: relative;
}

.nav-group-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #6E6A66;
  padding: 4px 12px;
  letter-spacing: 0.04em;
}

.nav-group-list {
  display: flex;
  gap: 2px;
}

.nav-group-list li a {
  display: block;
  padding: 6px 14px;
  font-size: 15px;
  color: #1D1B1A;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-group-list li a:hover {
  background-color: #F0EDE9;
  color: #B5654A;
}

.nav-group-list li a.is-current {
  background-color: #F5F4F1;
  color: #B5654A;
  font-weight: 600;
}

/* 导航切换按钮（移动端） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  align-items: center;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #1D1B1A;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* 页脚 */
.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid #E8E4DF;
  margin-top: 0;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #1D1B1A;
}

.footer-tagline {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.65;
  max-width: 260px;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: #1D1B1A;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

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

.footer-links a {
  font-size: 14px;
  color: #6E6A66;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #B5654A;
}

.footer-bottom {
  border-top: 1px solid #E8E4DF;
  padding: 16px 24px;
  text-align: center;
}

.copyright {
  font-size: 13px;
  color: #6E6A66;
}

/* ============================================================
   COMPONENTS — 共用组件
   ============================================================ */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background-color: #B5654A;
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: #8F4A34;
  color: #FFFFFF;
}

.btn-secondary {
  background-color: transparent;
  color: #1D1B1A;
  border: 1px solid #D8D2CC;
}

.btn-secondary:hover {
  border-color: #B5654A;
  color: #B5654A;
}

/* 区块标题 */
.section-title {
  font-size: 24px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.section-head {
  margin-bottom: 32px;
}

.section-number {
  font-size: 12px;
  font-weight: 600;
  color: #B5654A;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-desc {
  font-size: 15px;
  color: #6E6A66;
  margin-top: 8px;
  max-width: 640px;
}

/* 图文链接 */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #B5654A;
}

.text-link::after {
  content: "→";
  font-size: 16px;
  transition: transform 0.2s ease;
}

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

/* 面包屑 */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #6E6A66;
}

.breadcrumb a {
  color: #6E6A66;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #B5654A;
}

.breadcrumb-sep {
  color: #B8B2AC;
}

.breadcrumb-current {
  color: #1D1B1A;
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 32px;
}

.page-description {
  font-size: 12px;
  font-weight: 600;
  color: #B5654A;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-summary {
  font-size: 16px;
  color: #6E6A66;
  margin-top: 12px;
  max-width: 680px;
  line-height: 1.75;
}

/* 内页主容器 */
.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 64px;
  min-height: 60vh;
}

/* 相关内容链接条 */
.related-links {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  border-top: 1px solid #E8E4DF;
}

.related-links-label {
  font-size: 13px;
  font-weight: 600;
  color: #6E6A66;
  letter-spacing: 0.04em;
}

.related-links-item {
  font-size: 14px;
  color: #B5654A;
  transition: color 0.2s ease;
}

.related-links-item:hover {
  color: #8F4A34;
}

/* FAQ 折叠项 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid #E8E4DF;
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: #D8B4A6;
}

.faq-question,
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: #1D1B1A;
  cursor: pointer;
  min-height: 44px;
  list-style: none;
}

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

.faq-question::after,
.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #B5654A;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

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

.faq-answer,
.faq-item p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: #6E6A66;
  line-height: 1.75;
}

/* 行动入口区 */
.cta-entry,
.cta-band {
  background-color: #EDEBE7;
  border-radius: 6px;
  margin-top: 48px;
  padding: 40px;
}

.cta-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-title {
  font-size: 22px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.4;
}

.cta-text,
.cta-desc {
  font-size: 15px;
  color: #6E6A66;
  max-width: 640px;
  margin-bottom: 8px;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #B5654A;
  min-height: 44px;
}

.cta-link::after {
  content: "→";
  font-size: 16px;
  transition: transform 0.2s ease;
}

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

.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* ============================================================
   PAGES — 首页
   ============================================================ */
.home-main {
  overflow: visible;
}

/* 首屏 hero */
.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 48px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.hero-kicker {
  font-size: 12px;
  font-weight: 600;
  color: #B5654A;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.3;
  letter-spacing: 0.01em;
  max-width: 480px;
}

.hero-lead {
  font-size: 16px;
  color: #6E6A66;
  line-height: 1.75;
  max-width: 460px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-summary {
  font-size: 14px;
  color: #6E6A66;
  border-left: 2px solid #D8B4A6;
  padding-left: 12px;
  margin-top: 4px;
  max-width: 420px;
}

.hero-figure {
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: 6px;
}

/* 区块通用 */
.section-block {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}

/* 服务区域索引 */
.services-index {
  background-color: #FFFFFF;
  max-width: none;
  padding: 64px 0;
}

.services-index .section-head {
  max-width: 1200px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

.service-cards {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background-color: #F5F4F1;
  border-radius: 6px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
  background-color: #EDEBE7;
  transform: translateY(-2px);
}

.card-index {
  font-size: 12px;
  font-weight: 700;
  color: #B5654A;
  letter-spacing: 0.06em;
}

.card-title {
  font-size: 17px;
  font-weight: 600;
  color: #1D1B1A;
  line-height: 1.4;
}

.card-text {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.65;
  flex-grow: 1;
}

.card-link {
  font-size: 14px;
  font-weight: 600;
  color: #B5654A;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 44px;
}

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

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

/* 执行流程速览 */
.process-preview {
  background-color: #F5F4F1;
  max-width: none;
  padding: 64px 0;
}

.process-preview .section-head {
  max-width: 1200px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

.process-timeline {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  counter-reset: timeline;
}

.timeline-item {
  background-color: #FFFFFF;
  border-radius: 6px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.timeline-index {
  font-size: 12px;
  font-weight: 700;
  color: #B5654A;
  letter-spacing: 0.06em;
}

.timeline-title {
  font-size: 16px;
  font-weight: 600;
  color: #1D1B1A;
  line-height: 1.4;
}

.timeline-text {
  font-size: 13px;
  color: #6E6A66;
  line-height: 1.6;
}

.process-more {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 0 24px;
}

/* 质量标准承诺区 */
.quality-promise {
  background-color: #FFFFFF;
  max-width: none;
  padding: 64px 0;
}

.quality-promise .section-head {
  max-width: 1200px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

.promise-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.promise-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: #F5F4F1;
  border-radius: 6px;
  padding: 20px 24px;
}

.promise-toggle {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #B5654A;
  position: relative;
  margin-top: 4px;
}

.promise-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #B5654A;
}

.promise-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.promise-title {
  font-size: 16px;
  font-weight: 600;
  color: #1D1B1A;
  line-height: 1.4;
}

.promise-text {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.65;
}

.quality-more {
  max-width: 1200px;
  margin: 32px auto 0;
  padding: 0 24px;
}

/* 策展式图文区 */
.featured-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.featured-figure {
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
}

.featured-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 6px;
}

.featured-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
}

.featured-text {
  font-size: 15px;
  color: #6E6A66;
  line-height: 1.75;
}

/* 常见问题提点 */
.faq-preview {
  background-color: #EDEBE7;
  max-width: none;
  padding: 64px 0;
}

.faq-preview .section-head {
  max-width: 1200px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

.faq-preview .faq-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.faq-more {
  max-width: 1200px;
  margin: 24px auto 0;
  padding: 0 24px;
}

/* 合作入口条 */
.cta-section {
  background-color: #FFFFFF;
  max-width: none;
  padding: 64px 0;
}

.cta-section .cta-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  align-items: flex-start;
}

/* ============================================================
   PAGES — 关于我们
   ============================================================ */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}

.main-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
  min-width: 0;
}

.about-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-section .section-title {
  font-size: 20px;
  margin-bottom: 4px;
}

.about-section p {
  font-size: 15px;
  color: #6E6A66;
  line-height: 1.75;
}

/* 适合与不适合对照表 */
.fit-table {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  overflow: hidden;
}

.fit-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.fit-col {
  padding: 20px 24px;
}

.fit-col + .fit-col {
  border-left: 1px solid #E8E4DF;
}

.fit-col-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.fit-col-title-yes {
  color: #B5654A;
}

.fit-col-title-no {
  color: #6E6A66;
}

.fit-list {
  display: flex;
  flex-direction: column;
}

.fit-item {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  align-items: flex-start;
}

.fit-item + .fit-item {
  border-top: 1px solid #F0EDE9;
}

.fit-num {
  font-size: 12px;
  font-weight: 700;
  color: #B5654A;
  flex-shrink: 0;
  margin-top: 3px;
}

.fit-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.fit-desc {
  font-size: 14px;
  color: #1D1B1A;
  line-height: 1.6;
}

/* 服务边界引文 */
.boundary-quote {
  background-color: #EDEBE7;
  border-left: 3px solid #B5654A;
  border-radius: 0 6px 6px 0;
  padding: 24px;
  font-size: 15px;
  color: #1D1B1A;
  line-height: 1.75;
  font-style: italic;
}

/* 侧栏 */
.about-aside {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-card {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 24px;
}

.aside-title {
  font-size: 16px;
  font-weight: 600;
  color: #1D1B1A;
  margin-bottom: 16px;
}

.aside-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.aside-list li {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.6;
  padding-left: 14px;
  position: relative;
}

.aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #B5654A;
}

.about-figure {
  border-radius: 6px;
  overflow: hidden;
}

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

.about-figure figcaption {
  background-color: #FFFFFF;
  padding: 12px 16px;
  font-size: 13px;
  color: #6E6A66;
  line-height: 1.6;
}

/* ============================================================
   PAGES — 服务能力
   ============================================================ */

/* 服务类别速览 */
.service-quick-nav {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 16px 24px;
  margin-bottom: 48px;
}

.quick-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.quick-nav-list li a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 500;
  color: #1D1B1A;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.quick-nav-list li a:hover {
  background-color: #F5F4F1;
  color: #B5654A;
}

/* 服务章节 */
.service-section {
  margin-bottom: 56px;
  padding-top: 16px;
}

.service-section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.service-index {
  font-size: 12px;
  font-weight: 700;
  color: #B5654A;
  letter-spacing: 0.06em;
}

.service-title {
  font-size: 24px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.4;
}

.service-summary {
  font-size: 15px;
  color: #6E6A66;
  max-width: 680px;
  line-height: 1.7;
}

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

.service-detail-col {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 24px;
}

.detail-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #1D1B1A;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid #F0EDE9;
}

.detail-col-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.detail-col-list li {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.65;
  padding-left: 14px;
  position: relative;
}

.detail-col-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: #B5654A;
}

.service-figure {
  margin: 24px 0 0;
  border-radius: 6px;
  overflow: hidden;
}

.service-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

/* 服务组合对照表 */
.service-combo-section {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 32px;
  margin-top: 16px;
}

.section-intro {
  font-size: 15px;
  color: #6E6A66;
  margin: 8px 0 20px;
  max-width: 640px;
}

.combo-table-wrap {
  overflow-x: auto;
}

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

.combo-table th,
.combo-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #F0EDE9;
  vertical-align: top;
}

.combo-table th {
  font-weight: 600;
  color: #1D1B1A;
  background-color: #F5F4F1;
}

.combo-table td {
  color: #6E6A66;
  line-height: 1.65;
}

.combo-note {
  font-size: 13px;
  color: #6E6A66;
  margin-top: 16px;
  line-height: 1.6;
}

.combo-note a {
  color: #B5654A;
}

/* ============================================================
   PAGES — 执行流程
   ============================================================ */

/* 步骤概览 */
.process-overview {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 24px;
  margin-bottom: 48px;
}

.process-overview .section-title {
  font-size: 18px;
  margin-bottom: 16px;
}

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

.overview-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.overview-num {
  font-size: 12px;
  font-weight: 700;
  color: #B5654A;
}

.overview-item a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 14px;
  color: #1D1B1A;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.overview-item a:hover {
  background-color: #F5F4F1;
  color: #B5654A;
}

/* 步骤章节 */
.process-step {
  margin-bottom: 48px;
  scroll-margin-top: 88px;
}

.step-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.step-num {
  font-size: 12px;
  font-weight: 700;
  color: #B5654A;
  letter-spacing: 0.06em;
}

.step-title {
  font-size: 22px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.4;
}

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

.step-card {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 20px;
}

.step-card-title {
  font-size: 15px;
  font-weight: 600;
  color: #1D1B1A;
  margin-bottom: 10px;
}

.step-card-text {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.65;
}

/* 流程配图 */
.process-media {
  margin: 48px 0;
  border-radius: 6px;
  overflow: hidden;
}

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

.process-media figcaption {
  background-color: #FFFFFF;
  padding: 12px 16px;
  font-size: 13px;
  color: #6E6A66;
  line-height: 1.6;
}

/* 交付物清单 */
.deliverables {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 32px;
  margin-bottom: 16px;
}

.deliverables .section-title {
  font-size: 20px;
  margin-bottom: 20px;
}

.deliverables-list {
  display: flex;
  flex-direction: column;
}

.deliverables-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  align-items: flex-start;
}

.deliverables-item + .deliverables-item {
  border-top: 1px solid #F0EDE9;
}

.deliverables-phase {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 600;
  color: #B5654A;
  min-width: 72px;
}

.deliverables-doc {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.6;
}

/* ============================================================
   PAGES — 质量标准
   ============================================================ */

/* 质量标准说明 */
.quality-intro {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 32px;
  margin-bottom: 48px;
}

.quality-intro .section-title {
  font-size: 20px;
  margin-bottom: 16px;
}

.quality-intro-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quality-intro-content p {
  font-size: 15px;
  color: #6E6A66;
  line-height: 1.75;
}

.quality-figure {
  margin-top: 24px;
  border-radius: 6px;
  overflow: hidden;
}

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

.quality-figure figcaption {
  background-color: #F5F4F1;
  padding: 12px 16px;
  font-size: 13px;
  color: #6E6A66;
  line-height: 1.6;
}

/* 标准清单 */
.standards-list {
  margin-bottom: 48px;
}

.standards-list > .section-title {
  font-size: 20px;
  margin-bottom: 24px;
}

.standard-item {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  margin-bottom: 16px;
  overflow: hidden;
}

.standard-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  min-height: 44px;
}

.standard-toggle {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #B5654A;
  position: relative;
}

.standard-toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #B5654A;
}

.standard-title {
  font-size: 16px;
  font-weight: 600;
  color: #1D1B1A;
  line-height: 1.4;
}

.standard-body {
  border-top: 1px solid #F0EDE9;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.standard-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field-label {
  font-size: 13px;
  font-weight: 600;
  color: #B5654A;
  letter-spacing: 0.03em;
}

.standard-field p {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.65;
}

/* 交付物核对表 */
.deliverable-check {
  margin-bottom: 16px;
}

.deliverable-check .section-title {
  font-size: 20px;
  margin-bottom: 8px;
}

.section-note {
  font-size: 14px;
  color: #6E6A66;
  margin-bottom: 20px;
}

.check-table-wrap {
  overflow-x: auto;
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
}

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

.check-table th,
.check-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid #F0EDE9;
  vertical-align: top;
}

.check-table th {
  font-weight: 600;
  color: #1D1B1A;
  background-color: #F5F4F1;
}

.check-table td {
  color: #6E6A66;
  line-height: 1.6;
}

/* ============================================================
   PAGES — 常见问题
   ============================================================ */

/* 引导图片 */
.faq-lead-media {
  margin-bottom: 40px;
  border-radius: 6px;
  overflow: hidden;
}

.faq-lead-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

/* FAQ 分组 */
.faq-group {
  margin-bottom: 40px;
}

.faq-group-head {
  margin-bottom: 16px;
}

.faq-group-head h2 {
  font-size: 20px;
  font-weight: 700;
  color: #1D1B1A;
  line-height: 1.4;
  margin-bottom: 4px;
}

.faq-group-desc {
  font-size: 14px;
  color: #6E6A66;
  line-height: 1.6;
}

/* 延伸阅读 */
.faq-readmore {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 32px;
  margin-bottom: 16px;
}

.faq-readmore h2 {
  font-size: 20px;
  font-weight: 700;
  color: #1D1B1A;
  margin-bottom: 8px;
}

.readmore-desc {
  font-size: 15px;
  color: #6E6A66;
  margin-bottom: 20px;
  max-width: 640px;
}

.readmore-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.readmore-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  background-color: #F5F4F1;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #1D1B1A;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.readmore-link:hover {
  background-color: #EDEBE7;
  color: #B5654A;
}

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

.error-panel {
  background-color: #FFFFFF;
  border-radius: 6px;
  border: 1px solid #E8E4DF;
  padding: 48px 40px;
  text-align: center;
  max-width: 480px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: #B5654A;
  line-height: 1;
}

.error-title {
  font-size: 24px;
  font-weight: 700;
  color: #1D1B1A;
}

.error-desc {
  font-size: 15px;
  color: #6E6A66;
  line-height: 1.65;
}

.error-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  background-color: #B5654A;
  color: #FFFFFF;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  margin-top: 8px;
  transition: background-color 0.2s ease;
}

.error-action:hover {
  background-color: #8F4A34;
  color: #FFFFFF;
}

/* ============================================================
   RESPONSIVE — 响应式适配
   ============================================================ */

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

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

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

  .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-aside {
    position: static;
  }

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

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    border-bottom: 1px solid #E8E4DF;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 20px;
    gap: 12px;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
  }

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

  .nav-group {
    display: flex;
    flex-direction: column;
  }

  .nav-group-label {
    padding: 4px 0;
  }

  .nav-group-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .nav-group-list li a {
    padding: 12px 12px;
    font-size: 16px;
  }

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

  .hero-content {
    order: 1;
  }

  .hero-figure {
    order: 2;
  }

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

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

  .section-block {
    padding: 40px 0;
  }

  .services-index .section-head,
  .process-preview .section-head,
  .quality-promise .section-head,
  .faq-preview .section-head {
    padding: 0 16px;
    margin-bottom: 24px;
  }

  .service-cards {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 0 16px;
  }

  .process-timeline {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 0 16px;
  }

  .promise-list {
    padding: 0 16px;
  }

  .featured-section {
    padding: 40px 16px;
  }

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

  .faq-preview .faq-list {
    padding: 0 16px;
  }

  .cta-section .cta-content {
    padding: 0 16px;
  }

  .process-more,
  .quality-more,
  .faq-more {
    padding: 0 16px;
  }

  /* 内页 */
  .breadcrumb {
    padding: 16px 16px 0;
  }

  .page-header {
    padding: 28px 16px 24px;
  }

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

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

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

  .about-aside {
    order: 2;
  }

  .main-content {
    order: 1;
  }

  .fit-heading {
    grid-template-columns: 1fr;
  }

  .fit-col + .fit-col {
    border-left: none;
    border-top: 1px solid #E8E4DF;
  }

  /* 服务页 */
  .service-quick-nav {
    padding: 12px 16px;
    margin-bottom: 32px;
  }

  .quick-nav-list {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 4px;
    padding-bottom: 4px;
  }

  .quick-nav-list li {
    flex-shrink: 0;
  }

  .quick-nav-list li a {
    white-space: nowrap;
    min-height: 40px;
    padding: 0 12px;
    font-size: 13px;
  }

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

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

  .service-figure img {
    height: 180px;
  }

  .service-combo-section {
    padding: 24px 16px;
    overflow-x: auto;
  }

  /* 流程页 */
  .process-overview {
    padding: 16px;
    margin-bottom: 32px;
  }

  .overview-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .overview-item {
    flex-shrink: 0;
  }

  .overview-item a {
    white-space: nowrap;
    min-height: 40px;
    padding: 0 10px;
    font-size: 13px;
  }

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

  .step-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

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

  .deliverables {
    padding: 24px 16px;
  }

  .deliverables-item {
    flex-direction: column;
    gap: 4px;
  }

  /* 质量页 */
  .quality-intro {
    padding: 24px 16px;
    margin-bottom: 32px;
  }

  .quality-figure img {
    height: 180px;
  }

  .standard-head {
    padding: 14px 16px;
  }

  .standard-body {
    padding: 16px;
  }

  .check-table-wrap {
    padding: 0;
  }

  /* FAQ 页 */
  .faq-lead-media img {
    height: 160px;
  }

  .faq-readmore {
    padding: 24px 16px;
  }

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

  .readmore-link {
    width: 100%;
  }

  /* CTA */
  .cta-entry,
  .cta-band {
    padding: 24px 16px;
  }

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

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

  .related-links {
    padding: 16px 16px 0;
    gap: 12px;
  }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .promise-item {
    flex-direction: row;
    padding: 16px;
  }

  .featured-section {
    padding: 32px 16px;
  }

  .section-title {
    font-size: 20px;
  }

  .service-card {
    padding: 20px 16px;
  }

  .timeline-item {
    padding: 20px 16px;
  }

  .combo-table th,
  .combo-table td {
    padding: 10px 12px;
    font-size: 13px;
  }

  .check-table th,
  .check-table td {
    padding: 10px 12px;
    font-size: 13px;
  }

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

  .error-code {
    font-size: 48px;
  }
}