/* ==========================================================================
   BASE
   ========================================================================== */
*, *::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", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #2A2A2A;
  background-color: #F7F5F0;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: #1F6F5C;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #185847;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.4;
  color: #2A2A2A;
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 20px;
}

p {
  margin-bottom: 1em;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-home {
  background-color: #F7F5F0;
}

.site-inner {
  background-color: #F7F5F0;
}

.inner-main {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 页头 */
.site-header {
  background-color: #FFFFFF;
  border-bottom: 1px solid #E6E1D8;
  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: 72px;
}

.brand-logo {
  font-size: 28px;
  font-weight: 700;
  color: #1F6F5C;
  letter-spacing: 0;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-logo:hover {
  color: #1F6F5C;
}

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

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: #2A2A2A;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover {
  background-color: #F0EDE6;
  color: #1F6F5C;
}

.nav-list li a.is-current {
  background-color: #1F6F5C;
  color: #FFFFFF;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #2A2A2A;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 14px;
  color: #6B6B6B;
}

.breadcrumb a {
  color: #1F6F5C;
}

.breadcrumb a:hover {
  color: #185847;
}

.breadcrumb-sep {
  color: #A8A29A;
}

.breadcrumb-current {
  color: #6B6B6B;
}

/* 页头标题区 */
.page-header {
  padding: 28px 0 32px;
}

.page-title {
  font-size: 36px;
  color: #2A2A2A;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: #5A5A5A;
  max-width: 760px;
  line-height: 1.8;
}

/* 页脚 */
.site-footer {
  background-color: #FFFFFF;
  border-top: 1px solid #E6E1D8;
  margin-top: auto;
}

.footer-links {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
}

.footer-cols {
  display: flex;
  gap: 48px;
  margin-bottom: 32px;
}

.footer-col h4 {
  font-size: 16px;
  color: #2A2A2A;
  margin-bottom: 12px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: #5A5A5A;
}

.footer-col ul li a:hover {
  color: #1F6F5C;
}

.footer-brand {
  border-top: 1px solid #E6E1D8;
  padding-top: 20px;
}

.footer-brand p {
  font-size: 13px;
  color: #8A8A8A;
  margin-bottom: 4px;
  line-height: 1.6;
}

/* 按钮 */
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background-color: #1F6F5C;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  border-radius: 6px;
  border: 2px solid #1F6F5C;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
  line-height: 1.2;
  text-align: center;
}

.btn-primary:hover {
  background-color: #185847;
  border-color: #185847;
  color: #FFFFFF;
}

.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  background-color: transparent;
  color: #1F6F5C;
  font-size: 16px;
  font-weight: 700;
  border-radius: 6px;
  border: 2px solid #1F6F5C;
  transition: background-color 0.2s ease, color 0.2s ease;
  min-height: 44px;
  line-height: 1.2;
  text-align: center;
}

.btn-secondary:hover {
  background-color: #F0EDE6;
  color: #185847;
}

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

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

.section-heading h2 {
  font-size: 28px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.section-heading p {
  font-size: 16px;
  color: #5A5A5A;
  max-width: 640px;
}

.section-more {
  margin-top: 24px;
  font-size: 15px;
}

.section-more a {
  color: #1F6F5C;
  font-weight: 600;
}

.section-more a:hover {
  color: #185847;
  text-decoration: underline;
}

/* 文本链接 */
.text-link {
  color: #1F6F5C;
  font-weight: 600;
  border-bottom: 1px solid #1F6F5C;
  padding-bottom: 2px;
}

.text-link:hover {
  color: #185847;
  border-bottom-color: #185847;
}

/* 链接箭头 */
.link-arrow {
  display: inline-block;
  color: #1F6F5C;
  font-weight: 600;
  font-size: 16px;
  position: relative;
  padding-right: 20px;
}

.link-arrow::after {
  content: "→";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
}

.link-arrow:hover {
  color: #185847;
}

/* 相关链接条 */
.related-links {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.related-links-label {
  font-size: 14px;
  color: #8A8A8A;
  margin-right: 4px;
}

.related-links-item {
  display: inline-block;
  padding: 8px 16px;
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 6px;
  font-size: 14px;
  color: #1F6F5C;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.related-links-item:hover {
  border-color: #1F6F5C;
  background-color: #F0EDE6;
  color: #185847;
}

/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* ---------- 首页 Hero ---------- */
.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px 72px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.hero-eyebrow {
  display: inline-block;
  padding: 4px 14px;
  background-color: #E8F0ED;
  color: #1F6F5C;
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  margin-bottom: 0;
}

.hero-copy h1 {
  font-size: 38px;
  line-height: 1.3;
  margin-bottom: 0;
}

.hero-lead {
  font-size: 17px;
  color: #5A5A5A;
  line-height: 1.8;
  margin-bottom: 0;
}

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

.hero-media {
  position: relative;
}

.hero-figure {
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #E6E1D8;
  background-color: #FFFFFF;
}

.hero-figure img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* 首页内容图 */
.content-media-primary {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

.content-media-primary img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid #E6E1D8;
}

.content-media-primary figcaption {
  padding: 12px 4px 0;
  font-size: 14px;
  color: #8A8A8A;
  line-height: 1.6;
}

/* ---------- 首页服务场景目录 ---------- */
.service-directory {
  background-color: #FFFFFF;
  border-top: 1px solid #E6E1D8;
  border-bottom: 1px solid #E6E1D8;
}

.service-directory .section-heading,
.capability-matrix .section-heading,
.process-preview .section-heading,
.quality-highlights .section-heading,
.faq-entry .section-heading {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 24px;
}

.directory-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scene-card {
  background-color: #F7F5F0;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 28px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.scene-card:hover {
  transform: translateY(-4px);
  border-color: #1F6F5C;
  box-shadow: 0 8px 24px rgba(31, 111, 92, 0.08);
}

.scene-card h3 {
  font-size: 20px;
  color: #1F6F5C;
  margin-bottom: 12px;
}

.scene-card p {
  font-size: 15px;
  color: #4A4A4A;
  margin-bottom: 12px;
  line-height: 1.8;
}

.scene-card .scene-example {
  font-size: 14px;
  color: #8A8A8A;
  border-top: 1px solid #E6E1D8;
  padding-top: 12px;
  margin-bottom: 16px;
}

.scene-card a {
  font-size: 15px;
  font-weight: 600;
  color: #1F6F5C;
}

.scene-card a:hover {
  color: #185847;
  text-decoration: underline;
}

/* ---------- 首页服务能力矩阵 ---------- */
.capability-matrix {
  background-color: #F7F5F0;
}

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

.capability-card {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 28px 24px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.capability-card:hover {
  transform: translateY(-4px);
  border-color: #D97C3B;
  box-shadow: 0 8px 24px rgba(217, 124, 59, 0.08);
}

.capability-card h3 {
  font-size: 18px;
  color: #1F6F5C;
  margin-bottom: 10px;
}

.capability-card p {
  font-size: 14px;
  color: #4A4A4A;
  margin-bottom: 12px;
  line-height: 1.7;
}

.capability-card .deliverable {
  font-size: 13px;
  color: #8A8A8A;
  border-top: 1px solid #E6E1D8;
  padding-top: 10px;
  margin-bottom: 16px;
}

.capability-card a {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: #1F6F5C;
}

.capability-card a:hover {
  color: #185847;
  text-decoration: underline;
}

/* ---------- 首页交付流程预览 ---------- */
.process-preview {
  background-color: #FFFFFF;
  border-top: 1px solid #E6E1D8;
  border-bottom: 1px solid #E6E1D8;
}

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

.step-item {
  position: relative;
  padding: 24px;
  background-color: #F7F5F0;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.step-item:hover {
  border-color: #1F6F5C;
  transform: translateY(-2px);
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background-color: #1F6F5C;
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-item h3 {
  font-size: 17px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 首页质量标准摘要 ---------- */
.quality-highlights {
  background-color: #F7F5F0;
}

.quality-list {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.quality-item {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px;
  border-left: 4px solid #D97C3B;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.quality-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.quality-item h3 {
  font-size: 17px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.quality-item p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 首页 FAQ 入口 ---------- */
.faq-entry {
  background-color: #FFFFFF;
  border-top: 1px solid #E6E1D8;
}

.faq-summary-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.faq-summary-item {
  background-color: #F7F5F0;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.faq-summary-item:hover {
  border-color: #1F6F5C;
  transform: translateY(-2px);
}

.faq-summary-item h3 {
  font-size: 16px;
  color: #1F6F5C;
  margin-bottom: 8px;
}

.faq-summary-item p {
  font-size: 14px;
  color: #5A5A5A;
  margin-bottom: 0;
  line-height: 1.7;
}

/* ---------- 首页合作引导条 ---------- */
.cooperation-strip {
  background-color: #1F6F5C;
  padding: 56px 0;
}

.strip-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.strip-content h2 {
  color: #FFFFFF;
  font-size: 28px;
  margin-bottom: 12px;
}

.strip-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto 28px;
  line-height: 1.8;
}

.strip-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cooperation-strip .btn-primary {
  background-color: #FFFFFF;
  border-color: #FFFFFF;
  color: #1F6F5C;
}

.cooperation-strip .btn-primary:hover {
  background-color: #F0EDE6;
  border-color: #F0EDE6;
  color: #185847;
}

.cooperation-strip .btn-secondary {
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.cooperation-strip .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
}

/* ---------- 服务能力页：锚点目录 ---------- */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0 0 40px;
}

.anchor-nav a {
  display: inline-block;
  padding: 10px 20px;
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 6px;
  font-size: 15px;
  color: #2A2A2A;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.anchor-nav a:hover {
  border-color: #1F6F5C;
  color: #1F6F5C;
  background-color: #F0EDE6;
}

/* ---------- 服务能力页：服务分组 ---------- */
.service-groups {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-bottom: 56px;
}

.service-group {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
}

.group-head {
  padding: 28px 32px 20px;
  border-bottom: 1px solid #E6E1D8;
  background-color: #F7F5F0;
}

.group-head h2 {
  font-size: 24px;
  color: #1F6F5C;
  margin-bottom: 6px;
}

.group-tag {
  display: inline-block;
  padding: 2px 12px;
  background-color: #E8F0ED;
  color: #1F6F5C;
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  margin-bottom: 0;
}

.group-body {
  padding: 28px 32px 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.group-scene h3,
.group-content h3,
.group-deliverables h3,
.group-boundary h3 {
  font-size: 16px;
  color: #2A2A2A;
  margin-bottom: 8px;
  position: relative;
  padding-left: 14px;
}

.group-scene h3::before,
.group-content h3::before,
.group-deliverables h3::before,
.group-boundary h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 16px;
  background-color: #D97C3B;
  border-radius: 2px;
}

.group-scene p,
.group-content p,
.group-boundary p {
  font-size: 15px;
  color: #4A4A4A;
  line-height: 1.8;
  margin-bottom: 0;
}

.group-deliverables ul li {
  font-size: 15px;
  color: #4A4A4A;
  line-height: 1.8;
  padding: 4px 0;
  position: relative;
  padding-left: 18px;
}

.group-deliverables ul li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: #D97C3B;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.6;
}

.group-boundary {
  grid-column: 1 / -1;
  background-color: #F7F5F0;
  border: 1px solid #E6E1D8;
  border-radius: 6px;
  padding: 16px 20px;
}

.group-boundary p {
  font-size: 14px;
  color: #6B6B6B;
}

/* ---------- 服务能力页：场景图集 ---------- */
.service-visual {
  margin-bottom: 56px;
}

.service-visual h2 {
  font-size: 24px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.service-visual > h2 {
  margin-bottom: 24px;
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.visual-item {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
}

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

.visual-item figcaption {
  padding: 14px 20px;
  font-size: 14px;
  color: #5A5A5A;
  background-color: #FFFFFF;
  line-height: 1.6;
}

/* ---------- 服务能力页：合作引导 ---------- */
.cooperation-cta {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  margin-bottom: 24px;
}

.cooperation-cta h2 {
  font-size: 24px;
  color: #2A2A2A;
  margin-bottom: 12px;
}

.cooperation-cta p {
  font-size: 16px;
  color: #5A5A5A;
  max-width: 560px;
  margin: 0 auto 24px;
  line-height: 1.8;
}

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

/* ---------- 交付流程页：时间线 ---------- */
.timeline-section {
  margin-bottom: 56px;
}

.timeline-section > h2 {
  font-size: 24px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.timeline-section > p {
  font-size: 16px;
  color: #5A5A5A;
  max-width: 640px;
  margin-bottom: 32px;
}

.timeline-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: #E6E1D8;
}

.timeline-item {
  position: relative;
  padding: 0 0 32px 72px;
}

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

.timeline-marker {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  gap: 16px;
}

.timeline-step {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: #1F6F5C;
  color: #FFFFFF;
  font-size: 18px;
  font-weight: 700;
  border-radius: 50%;
  z-index: 2;
  flex-shrink: 0;
}

.timeline-marker h3 {
  font-size: 20px;
  color: #2A2A2A;
  margin-bottom: 0;
  white-space: nowrap;
}

.timeline-content {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 20px 24px;
}

.timeline-content p {
  font-size: 15px;
  color: #4A4A4A;
  line-height: 1.8;
  margin-bottom: 8px;
}

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

/* ---------- 交付流程页：过程现场图 ---------- */
.process-visual {
  margin-bottom: 56px;
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
}

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

.process-visual figcaption {
  padding: 14px 24px;
  font-size: 14px;
  color: #5A5A5A;
  background-color: #FFFFFF;
  line-height: 1.6;
}

/* ---------- 材料清单（流程页 + 合作页共用） ---------- */
.materials-section {
  margin-bottom: 56px;
}

.materials-section > h2 {
  font-size: 24px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.materials-section > p {
  font-size: 16px;
  color: #5A5A5A;
  margin-bottom: 32px;
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.material-card {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.material-card:hover {
  transform: translateY(-4px);
  border-color: #1F6F5C;
  box-shadow: 0 8px 24px rgba(31, 111, 92, 0.08);
}

.material-card h3 {
  font-size: 17px;
  color: #1F6F5C;
  margin-bottom: 10px;
}

.material-card p {
  font-size: 14px;
  color: #4A4A4A;
  line-height: 1.7;
  margin-bottom: 8px;
}

.material-card p:last-child {
  margin-bottom: 0;
}

.material-card .prep-note {
  font-size: 13px;
  color: #8A8A8A;
  border-top: 1px solid #E6E1D8;
  padding-top: 10px;
  margin-top: 12px;
}

/* ---------- 流程页 FAQ 链接条 ---------- */
.faq-link-strip {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.faq-link-strip p {
  font-size: 16px;
  color: #2A2A2A;
  margin-bottom: 0;
}

/* ---------- 质量标准页：验收维度 ---------- */
.accept-dimensions {
  margin-bottom: 56px;
}

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

.dimension-card {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.dimension-card:hover {
  transform: translateY(-4px);
  border-color: #D97C3B;
  box-shadow: 0 8px 24px rgba(217, 124, 59, 0.08);
}

.dimension-card h3 {
  font-size: 18px;
  color: #1F6F5C;
  margin-bottom: 10px;
}

.dimension-card p {
  font-size: 14px;
  color: #4A4A4A;
  line-height: 1.7;
  margin-bottom: 12px;
}

.dimension-card .dimension-example {
  font-size: 13px;
  color: #8A8A8A;
  border-top: 1px solid #E6E1D8;
  padding-top: 10px;
  margin-bottom: 0;
}

/* ---------- 质量标准页：验收现场图 ---------- */
.quality-visual {
  margin-bottom: 56px;
}

.quality-figure {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
}

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

.quality-figure figcaption {
  padding: 14px 24px;
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.6;
}

/* ---------- 质量标准页：修改规则 ---------- */
.change-rules {
  margin-bottom: 56px;
}

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

.rule-item {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px;
  border-top: 4px solid #D97C3B;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.rule-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.rule-item h3 {
  font-size: 17px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.rule-item p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- 质量标准页：FAQ 入口 ---------- */
.related-faq {
  margin-bottom: 32px;
}

.faq-entry {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.faq-entry p {
  font-size: 16px;
  color: #2A2A2A;
  margin-bottom: 0;
}

/* ---------- 质量标准页：合作入口 ---------- */
.cooperation-entry {
  margin-bottom: 24px;
}

.cooperation-box {
  background-color: #1F6F5C;
  border-radius: 8px;
  padding: 40px;
  text-align: center;
}

.cooperation-box p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  margin-bottom: 24px;
  line-height: 1.8;
}

.cooperation-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.cooperation-box .btn-primary {
  background-color: #FFFFFF;
  border-color: #FFFFFF;
  color: #1F6F5C;
}

.cooperation-box .btn-primary:hover {
  background-color: #F0EDE6;
  border-color: #F0EDE6;
  color: #185847;
}

.cooperation-box .btn-secondary {
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.cooperation-box .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
}

/* ---------- FAQ 页：折叠组 ---------- */
.faq-group {
  margin-bottom: 48px;
}

.faq-group > h2 {
  font-size: 24px;
  color: #2A2A2A;
  margin-bottom: 6px;
}

.group-intro {
  font-size: 15px;
  color: #5A5A5A;
  margin-bottom: 20px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: #1F6F5C;
}

.faq-item summary {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: #2A2A2A;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
  line-height: 1.6;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 400;
  color: #1F6F5C;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
  color: #D97C3B;
}

.faq-item summary:hover {
  color: #1F6F5C;
}

.faq-answer {
  padding: 0 24px 20px;
  border-top: 1px solid #E6E1D8;
}

.faq-answer p {
  padding-top: 16px;
  font-size: 15px;
  color: #4A4A4A;
  line-height: 1.8;
  margin-bottom: 0;
}

/* ---------- FAQ 页：配图 ---------- */
.faq-visual {
  margin-bottom: 48px;
}

.faq-figure {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
}

.faq-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.faq-figure figcaption {
  padding: 14px 24px;
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.6;
}

/* ---------- FAQ 页：合作入口 ---------- */
.cooperation-entry > p {
  font-size: 16px;
  color: #2A2A2A;
  margin-bottom: 12px;
}

.cooperation-entry > p a {
  color: #1F6F5C;
  font-weight: 600;
  text-decoration: underline;
}

.cooperation-entry > .btn-primary {
  margin-top: 8px;
}

/* ---------- 合作页：布局 ---------- */
.cooperation-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
}

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

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

/* ---------- 合作页：主栏内容 ---------- */
.content-section {
  margin-bottom: 48px;
}

.section-title {
  font-size: 24px;
  color: #2A2A2A;
  margin-bottom: 8px;
}

.section-intro {
  font-size: 16px;
  color: #5A5A5A;
  margin-bottom: 24px;
  line-height: 1.8;
}

.content-media {
  margin-bottom: 48px;
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  overflow: hidden;
}

.content-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.content-media figcaption {
  padding: 14px 24px;
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.6;
}

.communication-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.comm-step {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.comm-step:hover {
  transform: translateY(-2px);
  border-color: #1F6F5C;
}

.comm-step h3 {
  font-size: 17px;
  color: #1F6F5C;
  margin-bottom: 10px;
}

.comm-step p {
  font-size: 14px;
  color: #4A4A4A;
  line-height: 1.7;
  margin-bottom: 8px;
}

.comm-step p:last-child {
  margin-bottom: 0;
}

/* ---------- 合作页：侧栏 ---------- */
.aside-content {
  position: sticky;
  top: 96px;
}

.notice-box {
  background-color: #FFFFFF;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 28px;
  margin-bottom: 24px;
}

.aside-title {
  font-size: 20px;
  color: #2A2A2A;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid #E6E1D8;
}

.notice-item {
  margin-bottom: 20px;
}

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

.notice-item h3 {
  font-size: 15px;
  color: #1F6F5C;
  margin-bottom: 6px;
}

.notice-item p {
  font-size: 14px;
  color: #5A5A5A;
  line-height: 1.7;
  margin-bottom: 0;
}

.aside-link {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #E6E1D8;
}

.aside-link a {
  font-size: 15px;
  font-weight: 600;
  color: #1F6F5C;
}

.aside-link a:hover {
  color: #185847;
  text-decoration: underline;
}

.inner-links {
  background-color: #F7F5F0;
  border: 1px solid #E6E1D8;
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 24px;
}

.inner-links p {
  font-size: 14px;
  color: #5A5A5A;
  margin-bottom: 8px;
}

.inner-links p:last-child {
  margin-bottom: 0;
}

.inner-links a {
  color: #1F6F5C;
  font-weight: 600;
}

.inner-links a:hover {
  color: #185847;
  text-decoration: underline;
}

/* ---------- 404 页 ---------- */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

.error-content {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: #1F6F5C;
  line-height: 1.2;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 28px;
  color: #2A2A2A;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: #5A5A5A;
  margin-bottom: 32px;
  line-height: 1.8;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

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

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

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

  .cooperation-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 32px;
  }

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

@media (max-width: 768px) {
  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 18px;
  }

  /* 页头 */
  .header-inner {
    height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    border-bottom: 1px solid #E6E1D8;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    display: block;
    padding: 8px 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.is-open {
    max-height: 400px;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 8px 0;
  }

  .nav-list li a {
    padding: 12px 16px;
    font-size: 16px;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-radius: 6px;
  }

  .nav-list li a.is-current {
    background-color: #F0EDE6;
    color: #1F6F5C;
  }

  /* 首页 Hero */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 24px 48px;
  }

  .hero-copy h1 {
    font-size: 32px;
  }

  .hero-figure img {
    height: 280px;
  }

  .content-media-primary img {
    height: 240px;
  }

  .content-media-primary {
    padding-bottom: 48px;
  }

  /* 首页网格 */
  .directory-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .faq-summary-grid {
    grid-template-columns: 1fr;
  }

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

  .strip-content h2 {
    font-size: 24px;
  }

  /* 服务能力页 */
  .group-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .group-boundary {
    grid-column: 1;
  }

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

  .visual-item img {
    height: 240px;
  }

  .cooperation-cta {
    padding: 32px 24px;
  }

  /* 流程页 */
  .timeline-list::before {
    left: 20px;
  }

  .timeline-item {
    padding-left: 60px;
  }

  .timeline-step {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .timeline-marker h3 {
    font-size: 18px;
  }

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

  .process-visual img {
    height: 260px;
  }

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

  .faq-link-strip {
    flex-direction: column;
    align-items: flex-start;
  }

  /* 质量标准页 */
  .dimension-grid {
    grid-template-columns: 1fr;
  }

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

  .quality-figure img {
    height: 260px;
  }

  .cooperation-box {
    padding: 32px 24px;
  }

  /* FAQ 页 */
  .faq-item summary {
    font-size: 15px;
    padding: 16px 44px 16px 20px;
  }

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

  .faq-figure img {
    height: 240px;
  }

  /* 合作页 */
  .cooperation-layout {
    grid-template-columns: 1fr;
  }

  .aside-content {
    position: static;
  }

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

  .content-media img {
    height: 240px;
  }

  /* 页脚 */
  .footer-cols {
    flex-direction: column;
    gap: 24px;
  }

  .footer-links {
    padding: 32px 24px 24px;
  }

  .related-links {
    padding: 24px 24px 0;
  }

  /* 404 */
  .error-code {
    font-size: 56px;
  }
}

@media (max-width: 480px) {
  .inner-main {
    padding: 0 16px 48px;
  }

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

  .hero-section {
    padding: 32px 16px 40px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .directory-grid,
  .capability-grid,
  .process-steps,
  .quality-list,
  .faq-summary-grid {
    padding: 0 16px;
  }

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

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

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

  .group-head,
  .group-body {
    padding-left: 20px;
    padding-right: 20px;
  }

  .group-body {
    padding-top: 20px;
    padding-bottom: 24px;
  }

  .timeline-item {
    padding-left: 52px;
  }

  .timeline-list::before {
    left: 16px;
  }

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

  .timeline-marker h3 {
    font-size: 16px;
  }

  .timeline-content {
    padding: 14px 16px;
  }

  .process-visual img,
  .quality-figure img,
  .faq-figure img,
  .content-media img {
    height: 200px;
  }

  .cooperation-cta {
    padding: 24px 16px;
  }

  .cooperation-box {
    padding: 24px 16px;
  }

  .strip-actions,
  .cta-actions,
  .cooperation-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .anchor-nav {
    padding-bottom: 32px;
  }

  .anchor-nav a {
    padding: 8px 16px;
    font-size: 14px;
  }

  .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .related-links-label {
    margin-bottom: 4px;
  }

  .footer-links {
    padding: 32px 16px 24px;
  }

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

  .breadcrumb {
    padding-top: 16px;
  }
}

/* ==========================================================================
   JAVASCRIPT 增强（仅作为渐进增强）
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .scene-card,
  .capability-card,
  .quality-item,
  .faq-summary-item,
  .material-card,
  .dimension-card,
  .rule-item,
  .comm-step {
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  }
}

/* 滚动出现动画（仅支持时生效，不阻塞无 JS 浏览） */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* FAQ details 平滑展开 */
details.faq-item {
  transition: border-color 0.2s ease;
}

details.faq-item summary {
  transition: color 0.2s ease;
}