/* ==========================================================
   base — 基础变量、重置与全局排版
   ========================================================== */
:root {
  --color-bg: #f7f5f0;
  --color-ink: #23302b;
  --color-moss: #465c4c;
  --color-clay: #c2673a;
  --color-card: #ffffff;
  --color-line: #e3ded3;
  --color-text-soft: #5c665f;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.85;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-moss);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-clay);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3 {
  line-height: 1.25;
  font-weight: 600;
}

h1 {
  font-size: 34px;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 19px;
}

p {
  margin-bottom: 0.8em;
}

figure {
  margin: 0;
}

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

/* ==========================================================
   layout — 全站统一容器骨架
   ========================================================== */
.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand:hover {
  color: var(--color-clay);
}

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-ink);
  border-radius: 4px;
}

.nav-list li a:hover {
  color: var(--color-clay);
  background-color: rgba(70, 92, 76, 0.06);
}

.nav-list li a.is-current {
  color: var(--color-clay);
  font-weight: 600;
  background-color: rgba(194, 103, 58, 0.08);
}

.header-cta {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-clay);
  color: #fff;
  font-size: 14px;
  border-radius: 6px;
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.header-cta:hover {
  background-color: #a8542f;
  color: #fff;
}

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

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
}

.site-main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.inner-main {
  padding-top: 28px;
  padding-bottom: 72px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--color-text-soft);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

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

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

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

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

/* 内页页面标题区 */
.page-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 24px;
}

.page-title {
  font-size: 32px;
  margin-bottom: 10px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-soft);
  max-width: 720px;
  line-height: 1.8;
}

/* 通用 section 标题 */
.section-title {
  font-size: 24px;
  margin-bottom: 24px;
  position: relative;
}

/* 通用文字链接 */
.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-clay);
  border-bottom: 1px solid rgba(194, 103, 58, 0.3);
  padding-bottom: 2px;
}

.text-link:hover {
  color: #a8542f;
  border-bottom-color: #a8542f;
}

/* ==========================================================
   components — 页脚、按钮、卡片等通用组件
   ========================================================== */
.site-footer {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-line);
  margin-top: 40px;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 48px 24px 28px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-about .footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 10px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
}

.footer-heading {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 14px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--color-text-soft);
}

.footer-col ul li a:hover {
  color: var(--color-clay);
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding: 16px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-soft);
  margin: 0;
}

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  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: var(--color-clay);
  color: #fff;
}

.btn-primary:hover {
  background-color: #a8542f;
  color: #fff;
}

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

.btn-secondary:hover {
  background-color: rgba(70, 92, 76, 0.08);
  border-color: var(--color-clay);
  color: var(--color-clay);
}

/* 相关链接（部分内页底部） */
.related-links {
  margin-top: 48px;
  padding: 20px 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-right: 8px;
}

.related-links-item {
  font-size: 14px;
  color: var(--color-moss);
  padding: 6px 12px;
  background-color: rgba(70, 92, 76, 0.06);
  border-radius: 4px;
}

.related-links-item:hover {
  background-color: rgba(194, 103, 58, 0.1);
  color: var(--color-clay);
}

/* ==========================================================
   pages — 首页
   ========================================================== */
.home-main {
  padding-top: 0;
  padding-bottom: 0;
}

/* 首屏头条区 */
.hero-section {
  padding: 44px 0 36px;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-media .hero-figure {
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--color-line);
}

.hero-figure img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
  height: auto;
}

.hero-copy h1 {
  font-size: 36px;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-text-soft);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* 首屏次级入口 */
.hero-subentries {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.subentry-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 18px 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.subentry-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(35, 48, 43, 0.07);
  border-color: var(--color-moss);
}

.subentry-label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.subentry-text {
  display: block;
  font-size: 13.5px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* 栏目快速入口 */
.quick-links {
  padding: 8px 0 16px;
}

.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.quick-link-item {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  text-align: center;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.quick-link-item:hover {
  border-color: var(--color-clay);
  color: var(--color-clay);
  transform: translateY(-2px);
}

/* 当前承接方向状态条 */
.availability-banner {
  margin: 24px 0 8px;
  background-color: rgba(70, 92, 76, 0.08);
  border-left: 4px solid var(--color-moss);
  border-radius: 0 6px 6px 0;
  padding: 14px 20px;
}

.availability-banner p {
  margin: 0;
  font-size: 15px;
  color: var(--color-ink);
}

.availability-banner a {
  color: var(--color-clay);
  font-weight: 600;
}

/* 服务方向索引 */
.service-index {
  padding: 48px 0 16px;
}

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

.service-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(35, 48, 43, 0.07);
}

.card-figure {
  aspect-ratio: 3 / 2;
  background-color: var(--color-line);
  overflow: hidden;
}

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

.service-card h3 {
  padding: 16px 18px 6px;
}

.service-card p {
  padding: 0 18px;
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 12px;
}

.service-card .text-link {
  margin: 0 18px 18px;
}

/* 影像档案预览 */
.archive-preview {
  padding: 48px 0 16px;
}

.archive-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.archive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.archive-sample {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  overflow: hidden;
}

.archive-sample img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.archive-sample figcaption {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--color-text-soft);
  margin: 0;
}

.archive-note p {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 16px;
}

/* 执行流程时间轴摘要 */
.process-summary {
  padding: 48px 0 16px;
}

.timeline-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.step-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 20px;
  position: relative;
}

.step-number {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-clay);
  background-color: rgba(194, 103, 58, 0.1);
  border-radius: 4px;
  padding: 2px 8px;
  margin-bottom: 10px;
}

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

.step-item p {
  font-size: 13.5px;
  color: var(--color-text-soft);
  margin: 0;
}

.process-link {
  text-align: center;
}

/* 首页合作指引衔接 */
.home-guide-bridge {
  margin: 48px 0 0;
  background-color: rgba(194, 103, 58, 0.06);
  border-radius: 8px;
  padding: 28px 32px;
  text-align: center;
}

.home-guide-bridge p {
  font-size: 16px;
  color: var(--color-ink);
  margin-bottom: 14px;
}

.home-guide-bridge a {
  display: inline-block;
  margin: 0 10px;
  font-weight: 600;
}

/* ==========================================================
   pages — 服务方向 direction.html
   ========================================================== */
.service-matrix {
  margin-bottom: 24px;
}

.service-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
}

.service-row:nth-child(even) {
  grid-template-columns: 1.2fr 1fr;
}

.service-row:nth-child(even) .service-media {
  order: 2;
}

.service-row:nth-child(even) .service-content {
  order: 1;
}

.service-media figure {
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--color-line);
}

.service-media img {
  aspect-ratio: 3 / 2;
  object-fit: cover;
  width: 100%;
}

.service-media figcaption {
  padding: 8px 12px;
}

.service-content h3 {
  font-size: 22px;
  margin-bottom: 10px;
}

.service-scene {
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin-bottom: 12px;
}

.service-deliverables-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.service-deliverables {
  margin-bottom: 16px;
}

.service-deliverables li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin-bottom: 6px;
}

.service-deliverables li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-moss);
}

/* 服务边界提示 */
.service-boundary {
  margin: 32px 0 40px;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-clay);
  border-radius: 0 8px 8px 0;
  padding: 24px 28px;
}

.service-boundary .section-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.service-boundary p {
  font-size: 15px;
  color: var(--color-text-soft);
  margin: 0;
}

/* 下一步浏览建议 */
.next-steps {
  margin-top: 16px;
}

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

.next-step-card {
  display: block;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 20px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.next-step-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-moss);
}

.next-step-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.next-step-desc {
  display: block;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* ==========================================================
   pages — 影像档案 archive.html
   ========================================================== */
.archive-intro {
  margin-bottom: 32px;
}

.archive-intro p {
  font-size: 15px;
  color: var(--color-text-soft);
  max-width: 760px;
}

.archive-grid-section {
  margin-bottom: 40px;
}

.archive-grid-section .archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.archive-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.archive-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(35, 48, 43, 0.06);
}

.archive-image {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
}

.archive-caption {
  padding: 14px 16px 16px;
}

.archive-caption h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.archive-caption p {
  font-size: 13.5px;
  color: var(--color-text-soft);
  margin: 0;
  line-height: 1.65;
}

/* 场景对应说明 */
.scene-mapping {
  margin-bottom: 40px;
}

.scene-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.scene-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 18px 20px;
}

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

.scene-item p {
  font-size: 14px;
  color: var(--color-text-soft);
  margin: 0;
}

/* 衔接区 */
.archive-cta-block {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 28px 32px;
  margin-bottom: 16px;
  text-align: center;
}

.archive-cta-block .section-title {
  margin-bottom: 10px;
}

.archive-cta-block p {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 18px;
}

.cta-links {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-links a {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  background-color: var(--color-clay);
  color: #fff;
}

.cta-links a:hover {
  background-color: #a8542f;
  color: #fff;
}

.cta-links a:last-child {
  background-color: transparent;
  color: var(--color-moss);
  border: 1px solid var(--color-moss);
}

.cta-links a:last-child:hover {
  border-color: var(--color-clay);
  color: var(--color-clay);
}

/* ==========================================================
   pages — 执行流程 process.html
   ========================================================== */
/* 当前受理状态卡 */
.status-card {
  margin-bottom: 40px;
}

.status-card-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-moss);
  border-radius: 0 8px 8px 0;
  padding: 22px 28px;
}

.status-title {
  font-size: 19px;
  margin-bottom: 6px;
}

.status-text p {
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin: 0;
}

.status-action {
  flex-shrink: 0;
}

.status-link {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-clay);
  color: #fff;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
}

.status-link:hover {
  background-color: #a8542f;
  color: #fff;
}

/* 时间轴长列表 */
.timeline-section {
  margin-bottom: 48px;
}

.section-desc {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 28px;
}

.timeline-list {
  position: relative;
  padding-left: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  margin-bottom: 20px;
}

.timeline-marker {
  display: flex;
  justify-content: center;
}

.timeline-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-moss);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}

.timeline-body {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 20px 24px;
}

.timeline-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

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

.timeline-tag {
  font-size: 12.5px;
  color: var(--color-clay);
  background-color: rgba(194, 103, 58, 0.08);
  padding: 3px 10px;
  border-radius: 4px;
  white-space: nowrap;
  font-weight: 600;
}

.timeline-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.timeline-col p {
  font-size: 14px;
  color: var(--color-text-soft);
  margin: 0;
  line-height: 1.7;
}

.timeline-col strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.timeline-output {
  background-color: rgba(70, 92, 76, 0.05);
  border-radius: 6px;
  padding: 12px 14px;
}

.timeline-output p {
  font-size: 13.5px;
}

/* 交付确认说明 */
.delivery-notes {
  margin-bottom: 32px;
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.note-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 20px;
}

.note-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

.notes-footer {
  text-align: center;
  font-size: 15px;
  color: var(--color-text-soft);
}

.notes-footer a {
  font-weight: 600;
}

/* 现场过程图 */
.process-figure {
  margin: 32px 0 0;
  border-radius: 8px;
  overflow: hidden;
}

.process-figure img {
  aspect-ratio: 21 / 9;
  object-fit: cover;
  width: 100%;
}

.process-figure figcaption {
  padding: 10px 4px;
  text-align: center;
}

/* ==========================================================
   pages — 工作方法 craft.html
   ========================================================== */
.craft-overview {
  margin-bottom: 40px;
}

.craft-overview .section-title {
  margin-bottom: 12px;
}

.craft-overview p {
  font-size: 15px;
  color: var(--color-text-soft);
  max-width: 800px;
}

.craft-principles {
  margin-bottom: 48px;
}

.principle-block {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 28px;
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  overflow: hidden;
}

.principle-block:nth-child(even) {
  grid-template-columns: 1fr 1.1fr;
}

.principle-block:nth-child(even) .principle-copy {
  order: 2;
  padding: 24px 28px 24px 0;
}

.principle-block:nth-child(even) .principle-media {
  order: 1;
}

.principle-copy {
  padding: 24px 0 24px 28px;
}

.principle-copy h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.principle-copy p {
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin: 0;
}

.principle-media figure {
  height: 100%;
}

.principle-media img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.principle-media figcaption {
  padding: 8px 14px;
}

/* 现场观察清单 */
.craft-checklist {
  margin-bottom: 48px;
}

.checklist-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.checklist-media figure {
  border-radius: 8px;
  overflow: hidden;
}

.checklist-media img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.checklist-media figcaption {
  padding: 8px 4px;
}

.checklist-content p {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 14px;
}

.checklist-content ul {
  margin-bottom: 14px;
}

.checklist-content ul li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin-bottom: 8px;
}

.checklist-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-clay);
}

.checklist-content ul li strong {
  color: var(--color-ink);
  font-weight: 600;
}

.checklist-content p:last-child {
  background-color: rgba(70, 92, 76, 0.06);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 14px;
}

.checklist-content p:last-child strong {
  color: var(--color-moss);
}

/* 与执行流程衔接 */
.craft-process-link {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 28px 32px;
  text-align: center;
}

.craft-process-link .section-title {
  margin-bottom: 12px;
}

.craft-process-link p {
  font-size: 15px;
  color: var(--color-text-soft);
}

.craft-process-link p a {
  display: inline-block;
  margin: 0 8px;
  font-weight: 600;
}

/* ==========================================================
   pages — 合作指引 guide.html
   ========================================================== */
.guide-paths {
  margin-bottom: 44px;
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.path-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
}

.path-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.path-card p {
  font-size: 14px;
  color: var(--color-text-soft);
  flex-grow: 1;
  margin-bottom: 14px;
}

.path-card a {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-clay);
}

.path-card a:hover {
  color: #a8542f;
}

/* 准备清单 */
.guide-checklist {
  margin-bottom: 40px;
}

.section-note {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 18px;
}

.checklist-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.checklist-list li {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 14.5px;
  color: var(--color-text-soft);
}

.checklist-list li strong {
  color: var(--color-ink);
  font-weight: 600;
}

/* 场景分隔图 */
.guide-media {
  margin: 32px 0;
  border-radius: 8px;
  overflow: hidden;
}

.guide-image {
  aspect-ratio: 21 / 8;
  object-fit: cover;
  width: 100%;
}

.guide-media figcaption {
  padding: 10px 4px;
  text-align: center;
}

/* FAQ 折叠区 */
.guide-faq {
  margin-bottom: 40px;
}

.faq-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-line);
  border-radius: 6px;
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  position: relative;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-moss);
  transition: transform 0.2s ease;
}

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

.faq-item summary:hover {
  color: var(--color-clay);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14.5px;
  color: var(--color-text-soft);
  margin: 0;
  line-height: 1.75;
}

/* 下一步引导 */
.guide-next {
  background-color: rgba(70, 92, 76, 0.06);
  border-radius: 8px;
  padding: 24px 28px;
  text-align: center;
}

.guide-next .section-title {
  font-size: 20px;
  margin-bottom: 8px;
}

.guide-next p {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-bottom: 12px;
}

.guide-next .text-link {
  font-size: 15px;
}

/* ==========================================================
   pages — 404
   ========================================================== */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 72px - 260px);
  padding: 60px 24px;
}

.error-panel {
  text-align: center;
  max-width: 520px;
  width: 100%;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-clay);
  line-height: 1.1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

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

.error-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.error-btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--color-clay);
  color: #fff;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
}

.error-btn:hover {
  background-color: #a8542f;
  color: #fff;
}

.error-link {
  display: inline-block;
  padding: 12px 20px;
  color: var(--color-moss);
  font-size: 15px;
  font-weight: 600;
}

.error-link:hover {
  color: var(--color-clay);
}

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

.error-help a {
  color: var(--color-clay);
  font-weight: 600;
}

/* ==========================================================
   responsive — 响应式
   ========================================================== */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }

  .footer-about {
    grid-column: 1 / -1;
    margin-bottom: 8px;
  }

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

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

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

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

@media (max-width: 900px) {
  .header-inner {
    height: 64px;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    order: 4;
    width: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    background-color: var(--color-card);
    border: 1px solid var(--color-line);
    border-radius: 0 0 8px 8px;
    padding: 12px;
    gap: 2px;
  }

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

  .nav-list li a {
    padding: 12px 14px;
  }

  .header-cta {
    order: 2;
    font-size: 13px;
    padding: 8px 14px;
  }

  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding-top: 12px;
    padding-bottom: 12px;
  }

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

  .hero-copy h1 {
    font-size: 30px;
  }

  .service-row,
  .service-row:nth-child(even) {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .service-row:nth-child(even) .service-media {
    order: 1;
  }

  .service-row:nth-child(even) .service-content {
    order: 2;
  }

  .archive-showcase {
    grid-template-columns: 1fr;
  }

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

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

  .principle-block,
  .principle-block:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .principle-block:nth-child(even) .principle-copy {
    order: 1;
    padding: 20px;
  }

  .principle-block:nth-child(even) .principle-media {
    order: 2;
  }

  .principle-copy {
    padding: 20px;
  }

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

  .timeline-content {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .status-card-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 10px 16px;
  }

  .site-main,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .footer-about {
    grid-column: 1 / -1;
  }

  .hero-section {
    padding: 28px 0 24px;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-subentries {
    grid-template-columns: 1fr;
  }

  .quick-links-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .quick-link-item {
    padding: 12px 10px;
    font-size: 14px;
  }

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

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

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

  .archive-grid-section .archive-grid {
    grid-template-columns: 1fr;
  }

  .scene-list,
  .checklist-list,
  .next-steps-links,
  .notes-grid {
    grid-template-columns: 1fr;
  }

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

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

  .section-title {
    font-size: 21px;
  }

  .page-header {
    margin-bottom: 28px;
  }

  .timeline-item {
    grid-template-columns: 44px 1fr;
    gap: 12px;
  }

  .timeline-step {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

  .timeline-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .timeline-body {
    padding: 16px;
  }

  .home-guide-bridge {
    padding: 20px;
  }

  .archive-cta-block,
  .craft-process-link {
    padding: 20px;
  }

  .footer-bottom {
    padding: 14px 16px;
  }

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

@media (max-width: 390px) {
  .quick-links-grid {
    grid-template-columns: 1fr;
  }

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }

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

  .cta-links a {
    text-align: center;
  }

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

  .footer-about {
    grid-column: auto;
  }

  .nav-list li a {
    padding: 14px 12px;
  }
}