/* ==========================================================================
   17c吃瓜 · scgzsh.com 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base · 基础重置与全局排版
   -------------------------------------------------------------------------- */

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

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

body {
  margin: 0;
  background-color: #f6f4ef;
  color: #1b2a31;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: #1f4e5f;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

p {
  margin: 0 0 16px;
}

p:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: #1f4e5f;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: #2e7d6f;
}

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

figure {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

table {
  border-collapse: collapse;
  width: 100%;
}

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

:focus-visible {
  outline: 2px solid #2e7d6f;
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   layout · 容器与全站骨架
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 页头 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: #ffffff;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom-color: #d9dede;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: 1160px;
  min-height: 68px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  flex: 0 0 auto;
  color: #1f4e5f;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.brand:hover,
.brand:focus-visible {
  color: #2e7d6f;
}

/* 主导航 */

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

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

.nav-list li {
  display: block;
}

.nav-link {
  display: block;
  padding: 8px 12px;
  border-bottom: 2px solid transparent;
  color: #1b2a31;
  font-size: 15px;
  line-height: 1.5;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #1f4e5f;
  border-bottom-color: #2e7d6f;
}

.nav-link.is-current {
  color: #1f4e5f;
  font-weight: 600;
  border-bottom-color: #1f4e5f;
}

.nav-cta {
  display: inline-block;
  margin-left: 8px;
  padding: 9px 18px;
  border: 1px solid #1f4e5f;
  border-radius: 4px;
  background-color: #1f4e5f;
  color: #ffffff;
  font-size: 15px;
  line-height: 1.4;
  white-space: nowrap;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background-color: #2e7d6f;
  border-color: #2e7d6f;
  color: #ffffff;
}

/* 汉堡按钮（桌面隐藏） */

.nav-toggle {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid #d9dede;
  border-radius: 4px;
  background-color: #ffffff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle:hover {
  border-color: #1f4e5f;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: #1f4e5f;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

/* 移动端导航面板 */

.mobile-nav {
  display: none;
  background-color: #ffffff;
  border-top: 1px solid #d9dede;
}

.mobile-nav-list {
  display: block;
  padding: 8px 16px 20px;
}

.mobile-nav-list li {
  border-bottom: 1px solid #eef1ef;
}

.mobile-nav-list li:last-child {
  border-bottom: 0;
  padding-top: 12px;
}

.mobile-nav-list a {
  display: flex;
  align-items: center;
  min-height: 48px;
  color: #1b2a31;
  font-size: 16px;
}

.mobile-nav-list a.is-current {
  color: #1f4e5f;
  font-weight: 600;
}

.mobile-nav-list li:last-child a {
  justify-content: center;
  border-radius: 4px;
  background-color: #1f4e5f;
  color: #ffffff;
}

/* 主内容区 */

.site-main {
  display: block;
}

.inner-main {
  padding: 0 0 8px;
}

/* 面包屑 */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 24px 24px 0;
  font-size: 14px;
  color: #5a6a70;
}

.breadcrumb a {
  color: #5a6a70;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: #1f4e5f;
  text-decoration: underline;
}

.breadcrumb-sep {
  color: #b8c2c2;
}

.breadcrumb-current {
  color: #1f4e5f;
  font-weight: 600;
}

/* 页面标题区 */

.page-header {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 12px 24px 0;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  color: #1f4e5f;
}

.page-summary,
.page-lead {
  max-width: 760px;
  margin: 0 auto;
  padding: 12px 24px 0;
  color: #5a6a70;
  font-size: 16px;
}

.page-head .container,
.page-hero .container {
  padding-top: 0;
}

.page-head .page-summary,
.page-hero .page-lead {
  padding-left: 0;
  padding-right: 0;
}

/* 页脚 */

.site-footer {
  margin-top: 56px;
  border-top: 1px solid #d9dede;
  background-color: #ffffff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  padding: 44px 0 32px;
}

.footer-col {
  min-width: 0;
}

.footer-brand {
  margin-bottom: 8px;
  color: #1f4e5f;
  font-size: 19px;
  font-weight: 700;
}

.footer-slogan {
  margin-bottom: 12px;
  color: #2e7d6f;
  font-size: 15px;
  font-weight: 600;
}

.footer-desc {
  margin: 0;
  max-width: 340px;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.footer-title {
  margin-bottom: 14px;
  color: #1f4e5f;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

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

.footer-links a {
  color: #5a6a70;
  font-size: 14px;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #1f4e5f;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #eef1ef;
  padding: 18px 0 24px;
}

.footer-copy {
  margin: 0;
  color: #5a6a70;
  font-size: 13px;
}

/* 通用区块 */

.section {
  padding: 48px 0;
}

.section-head {
  margin-bottom: 28px;
}

.section-title {
  position: relative;
  padding-left: 14px;
  font-size: 24px;
  font-weight: 700;
  color: #1f4e5f;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  bottom: 0.22em;
  width: 3px;
  background-color: #2e7d6f;
}

.section-desc,
.section-intro {
  margin: 12px 0 0;
  max-width: 760px;
  color: #5a6a70;
  font-size: 15px;
}

.section-lead {
  margin: 0 0 20px;
  max-width: 720px;
  color: #5a6a70;
  font-size: 15px;
}

.section-foot {
  margin: 24px 0 0;
}

.text-link {
  display: inline-block;
  color: #1f4e5f;
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
  padding-bottom: 2px;
}

.text-link:hover,
.text-link:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

/* 按钮 */

.btn {
  display: inline-block;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  cursor: pointer;
}

.btn-primary {
  background-color: #1f4e5f;
  border-color: #1f4e5f;
  color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #2e7d6f;
  border-color: #2e7d6f;
  color: #ffffff;
}

.btn-ghost {
  background-color: transparent;
  border-color: #1f4e5f;
  color: #1f4e5f;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: #eef1ef;
  color: #1f4e5f;
}

/* 图片容器 */

.media-figure,
.content-figure,
.process-media,
.faq-figure,
.cooperate-figure,
.dispute-media,
.topic-figure {
  margin: 0;
  border: 1px solid #d9dede;
  border-radius: 6px;
  overflow: hidden;
  background-color: #eef1ef;
}

.media-figure img,
.content-figure img,
.process-media img,
.faq-figure img,
.cooperate-figure img,
.dispute-media img,
.topic-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.media-caption,
.topic-figure-caption,
.content-figure figcaption,
.process-media figcaption,
.faq-figure figcaption,
.cooperate-figure figcaption,
.dispute-media figcaption {
  padding: 12px 16px;
  background-color: #ffffff;
  border-top: 1px solid #eef1ef;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   components · 通用组件
   -------------------------------------------------------------------------- */

/* 清单式条目 */

.checklist-item,
.info-item,
.dispute-item,
.quality-item {
  border-bottom: 1px solid #eef1ef;
}

.checklist-item:last-child,
.info-item:last-child,
.dispute-item:last-child,
.quality-item:last-child {
  border-bottom: 0;
}

/* 折叠问答 */

.faq-item {
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
  overflow: hidden;
}

.faq-item + .faq-item {
  margin-top: 10px;
}

.faq-question {
  position: relative;
  display: block;
  padding: 16px 52px 16px 18px;
  color: #1b2a31;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 9px;
  height: 9px;
  margin-top: -6px;
  border-right: 2px solid #2e7d6f;
  border-bottom: 2px solid #2e7d6f;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question {
  color: #1f4e5f;
}

.faq-item[open] .faq-question::after {
  transform: rotate(-135deg);
  margin-top: -2px;
}

.faq-answer {
  padding: 0 18px 18px;
  border-top: 1px solid #eef1ef;
  background-color: #eef1ef;
  color: #1b2a31;
  font-size: 15px;
  line-height: 1.75;
}

.faq-answer p {
  padding-top: 14px;
}

.faq-answer p:last-child {
  padding-bottom: 0;
}

.faq-more,
.faq-guide {
  color: #5a6a70;
  font-size: 14px;
}

.faq-more a,
.faq-guide a {
  color: #1f4e5f;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

.faq-more a:hover,
.faq-guide a:hover,
.faq-more a:focus-visible,
.faq-guide a:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

/* 相关延伸链接卡 */

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.related-card {
  display: block;
  padding: 20px;
  border: 1px solid #d9dede;
  border-left: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
  transition: border-color 0.18s ease;
}

.related-card:hover,
.related-card:focus-visible {
  border-color: #1f4e5f;
  border-left-color: #1f4e5f;
}

.related-name,
.related-card-title {
  margin-bottom: 8px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.related-name a,
.related-card-title a {
  color: inherit;
}

.related-card:hover .related-name a,
.related-card:hover .related-card-title,
.related-card:hover .related-card-title a {
  color: #2e7d6f;
}

.related-text,
.related-desc,
.related-card-desc {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.related-link {
  display: inline-block;
  margin-top: 12px;
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

/* 相关内容条 */

.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid #d9dede;
}

.related-links-label {
  color: #5a6a70;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.related-links-item {
  color: #1f4e5f;
  font-size: 14px;
  border-bottom: 1px solid #b9c9cd;
}

/* 步骤列表（内页通用） */

.step-list {
  display: grid;
  gap: 16px;
}

.step-item {
  padding: 18px 20px;
  border: 1px solid #d9dede;
  border-left: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.step-item .step-name,
.step-item .step-no {
  color: #1f4e5f;
}

/* 表格 */

.table-wrap {
  overflow-x: auto;
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
}

.data-table {
  min-width: 620px;
  font-size: 15px;
}

.data-table th,
.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid #eef1ef;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
}

.data-table thead th {
  background-color: #eef1ef;
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody th {
  color: #1b2a31;
  font-weight: 600;
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

.home-main {
  padding-bottom: 8px;
}

.hero-section {
  padding: 40px 0 8px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.hero-card {
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
}

.hero-card-main {
  padding: 32px 32px 28px;
  border-left: 3px solid #1f4e5f;
}

.hero-eyebrow {
  margin-bottom: 12px;
  color: #b9793e;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero-card-main h1 {
  font-size: clamp(28px, 4.2vw, 42px);
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero-lead {
  max-width: 620px;
  color: #5a6a70;
  font-size: 16px;
}

.hero-media {
  margin: 24px 0 0;
  border: 1px solid #d9dede;
  border-radius: 6px;
  overflow: hidden;
  background-color: #eef1ef;
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-media figcaption {
  padding: 10px 16px;
  background-color: #ffffff;
  border-top: 1px solid #eef1ef;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-side {
  display: grid;
  gap: 20px;
}

.mini-card {
  padding: 22px 22px 20px;
  border: 1px solid #d9dede;
  border-top: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.mini-card-title {
  margin-bottom: 14px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.mini-list li,
.mini-steps li {
  padding: 9px 0;
  border-bottom: 1px solid #eef1ef;
  color: #1b2a31;
  font-size: 15px;
  line-height: 1.6;
}

.mini-list li:last-child,
.mini-steps li:last-child {
  border-bottom: 0;
}

.mini-card-link {
  display: inline-block;
  margin-top: 14px;
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

.mini-card-link:hover,
.mini-card-link:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

/* 服务矩阵 */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.service-item {
  padding: 22px 22px 18px;
  border: 1px solid #d9dede;
  border-left: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
  transition: border-color 0.18s ease;
}

.service-item:hover {
  border-color: #1f4e5f;
  border-left-color: #1f4e5f;
}

.service-name {
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.service-item:hover .service-name {
  text-decoration: underline;
  text-decoration-color: #2e7d6f;
  text-underline-offset: 4px;
}

.service-row {
  margin: 0 0 8px;
  color: #1b2a31;
  font-size: 14px;
  line-height: 1.7;
}

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

.row-label {
  display: inline-block;
  margin-right: 6px;
  color: #2e7d6f;
  font-weight: 600;
}

/* 协作流程 */

.process-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  counter-reset: none;
}

.process-step {
  position: relative;
  padding: 20px 18px 18px;
  border: 1px solid #d9dede;
  border-top: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.process-step .step-num {
  display: inline-block;
  margin-bottom: 10px;
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.process-step .step-name {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.step-out {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.process-media {
  margin-top: 28px;
}

/* 适用场景 */

.scenes-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.scene-item {
  padding: 20px;
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
}

.scene-name {
  margin-bottom: 10px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.scene-desc {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

/* 交付标准摘要 */

.delivery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.delivery-item {
  padding: 20px;
  border: 1px solid #d9dede;
  border-left: 3px solid #b9793e;
  border-radius: 6px;
  background-color: #ffffff;
}

.delivery-name {
  margin-bottom: 10px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.delivery-desc {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

/* 编辑推荐专题 */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.topic-card {
  padding: 22px;
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
  transition: border-color 0.18s ease;
}

.topic-card:hover {
  border-color: #1f4e5f;
}

.topic-name {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.topic-reason {
  margin: 0 0 14px;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.topic-link {
  display: inline-block;
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

.topic-link:hover,
.topic-link:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

/* 首页常见问题 */

.faq-list {
  max-width: 900px;
}

/* 合作入口区 */

.cooperate-entry {
  padding: 48px 0 8px;
}

.cooperate-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 32px;
  border: 1px solid #d9dede;
  border-left: 3px solid #1f4e5f;
  border-radius: 6px;
  background-color: #ffffff;
}

.cooperate-main h2 {
  margin-bottom: 12px;
  font-size: 24px;
  font-weight: 700;
  color: #1f4e5f;
}

.cooperate-desc {
  max-width: 640px;
  color: #5a6a70;
  font-size: 15px;
}

.cooperate-points {
  margin-top: 16px;
  counter-reset: cooperate-point;
}

.cooperate-points li {
  position: relative;
  padding: 10px 0 10px 30px;
  border-bottom: 1px solid #eef1ef;
  color: #1b2a31;
  font-size: 15px;
  line-height: 1.7;
  counter-increment: cooperate-point;
}

.cooperate-points li:last-child {
  border-bottom: 0;
}

.cooperate-points li::before {
  content: counter(cooperate-point, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  color: #2e7d6f;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.cooperate-side {
  padding: 22px;
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #eef1ef;
}

.cooperate-side-title {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.cooperate-side-desc {
  margin-bottom: 18px;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 服务矩阵
   -------------------------------------------------------------------------- */

.page-media {
  padding: 32px 0 0;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.catalog-card {
  position: relative;
  padding: 22px 22px 20px 26px;
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
}

.catalog-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: #2e7d6f;
}

.catalog-card:hover .catalog-bar {
  background-color: #1f4e5f;
}

.catalog-name {
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.catalog-line {
  margin: 0 0 8px;
  color: #1b2a31;
  font-size: 14px;
  line-height: 1.7;
}

.catalog-line:last-child {
  margin-bottom: 0;
}

.catalog-label {
  display: inline-block;
  margin-right: 6px;
  color: #2e7d6f;
  font-weight: 600;
}

.combine-list {
  display: grid;
  gap: 16px;
  counter-reset: combine;
}

.combine-item {
  position: relative;
  padding: 20px 22px 18px 58px;
  border: 1px solid #d9dede;
  border-left: 3px solid #b9793e;
  border-radius: 6px;
  background-color: #ffffff;
  counter-increment: combine;
}

.combine-item::before {
  content: counter(combine, decimal-leading-zero);
  position: absolute;
  left: 22px;
  top: 20px;
  color: #b9793e;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.combine-name {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.combine-text {
  margin: 0;
  color: #5a6a70;
  font-size: 15px;
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   pages · 合作指南
   -------------------------------------------------------------------------- */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
  padding-top: 24px;
}

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

.sidebar {
  min-width: 0;
}

.content-section + .content-section {
  margin-top: 40px;
}

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

.content-figure {
  margin: 20px 0;
}

.checklist {
  margin-top: 18px;
  border-top: 1px solid #eef1ef;
}

.checklist-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0 14px 26px;
  position: relative;
}

.checklist-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 13px;
  height: 13px;
  border: 1px solid #2e7d6f;
  border-radius: 2px;
}

.checklist-name {
  color: #1b2a31;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
}

.checklist-note {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.note-block {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 3px solid #2e7d6f;
  background-color: #eef1ef;
  border-radius: 0 6px 6px 0;
}

.note-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
  color: #1f4e5f;
}

.note-text {
  margin: 0;
  color: #5a6a70;
  font-size: 15px;
  line-height: 1.75;
}

.step-list .step-item {
  display: grid;
  gap: 6px;
}

.step-index {
  color: #2e7d6f;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.step-detail {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.info-list {
  border-top: 1px solid #eef1ef;
}

.info-item {
  padding: 12px 0;
}

.info-name {
  display: block;
  margin-bottom: 4px;
  color: #1b2a31;
  font-size: 15px;
  font-weight: 600;
}

.info-text {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.sidebar-box {
  padding: 22px;
  border: 1px solid #d9dede;
  border-top: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.sidebar-box .section-title {
  font-size: 19px;
  margin-bottom: 10px;
}

.sub-title {
  margin: 18px 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: #2e7d6f;
  letter-spacing: 0.03em;
}

.related-section {
  padding: 48px 0 8px;
}

.related-section .section-title {
  margin-bottom: 24px;
}

/* --------------------------------------------------------------------------
   pages · 交付标准
   -------------------------------------------------------------------------- */

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

.delivery-card {
  position: relative;
  padding: 22px 22px 20px;
  border: 1px solid #d9dede;
  border-radius: 6px;
  background-color: #ffffff;
}

.delivery-index {
  display: inline-block;
  margin-bottom: 10px;
  color: #b9793e;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.delivery-format {
  margin: 0 0 8px;
  color: #1b2a31;
  font-size: 14px;
  line-height: 1.7;
}

.delivery-use {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.quality-list {
  border-top: 1px solid #eef1ef;
}

.quality-item {
  padding: 16px 0;
}

.quality-name {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  color: #1f4e5f;
}

.quality-desc {
  margin: 0;
  color: #5a6a70;
  font-size: 15px;
  line-height: 1.75;
}

.revision-steps {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.revision-steps .step-item {
  display: grid;
  gap: 6px;
}

.revision-steps .step-no {
  color: #2e7d6f;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.revision-steps .step-role,
.revision-steps .step-output {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.dispute-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 32px;
  align-items: start;
}

.dispute-body {
  min-width: 0;
}

.dispute-lead {
  color: #1b2a31;
  font-size: 15px;
  line-height: 1.75;
}

.dispute-list {
  margin-top: 8px;
  border-top: 1px solid #eef1ef;
}

.dispute-item {
  padding: 14px 0;
  color: #5a6a70;
  font-size: 15px;
  line-height: 1.75;
}

.dispute-name {
  display: block;
  margin-bottom: 4px;
  color: #1f4e5f;
  font-weight: 600;
}

.link-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.link-card {
  display: block;
  padding: 20px;
  border: 1px solid #d9dede;
  border-left: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.link-card:hover,
.link-card:focus-visible {
  border-color: #1f4e5f;
  border-left-color: #1f4e5f;
}

.link-card-title {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.link-card:hover .link-card-title {
  color: #2e7d6f;
}

.link-card-desc {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 专题中心
   -------------------------------------------------------------------------- */

.topic-index-bar {
  position: sticky;
  top: 68px;
  z-index: 40;
  background-color: #f6f4ef;
  border-bottom: 1px solid #d9dede;
}

.topic-index-bar .container {
  padding-top: 12px;
  padding-bottom: 12px;
}

.topic-index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.topic-index-item a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid #d9dede;
  border-radius: 4px;
  background-color: #ffffff;
  color: #1b2a31;
  font-size: 14px;
  line-height: 1.5;
}

.topic-index-item a:hover,
.topic-index-item a:focus-visible {
  border-color: #1f4e5f;
  color: #1f4e5f;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.topic-grid .topic-card {
  display: flex;
  flex-direction: column;
  scroll-margin-top: 140px;
}

.topic-card-title {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.topic-card-scene {
  margin: 0 0 10px;
  color: #2e7d6f;
  font-size: 14px;
  font-weight: 600;
}

.topic-card-body {
  margin: 0 0 14px;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.topic-card-links {
  margin-top: auto;
  border-top: 1px solid #eef1ef;
  padding-top: 12px;
}

.topic-card-links li + li {
  margin-top: 6px;
}

.topic-card-links a {
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

.topic-card-links a:hover,
.topic-card-links a:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

.topic-media-section {
  padding: 8px 0 48px;
}

.pick-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.pick-item {
  padding: 20px;
  border: 1px solid #d9dede;
  border-left: 3px solid #b9793e;
  border-radius: 6px;
  background-color: #ffffff;
}

.pick-title {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.pick-reason {
  margin: 0 0 10px;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.pick-ref {
  margin: 0;
  font-size: 14px;
}

.pick-ref a {
  color: #1f4e5f;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

.pick-ref a:hover,
.pick-ref a:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

/* --------------------------------------------------------------------------
   pages · 常见问题
   -------------------------------------------------------------------------- */

.page-title-bar {
  padding: 12px 0 0;
}

.page-title-bar .page-summary {
  padding-left: 0;
  padding-right: 0;
}

.faq-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  padding-top: 32px;
}

.faq-toc {
  position: sticky;
  top: 92px;
  padding: 20px;
  border: 1px solid #d9dede;
  border-top: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.faq-toc-label {
  margin-bottom: 12px;
  color: #1f4e5f;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.faq-toc-list li + li {
  margin-top: 6px;
}

.faq-toc-link {
  display: block;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.6;
}

.faq-toc-link:hover,
.faq-toc-link:focus-visible {
  color: #1f4e5f;
  background-color: #eef1ef;
}

.faq-toc-link.is-current {
  border-left-color: #b9793e;
  background-color: #eef1ef;
  color: #1f4e5f;
  font-weight: 600;
}

.faq-body {
  min-width: 0;
}

.faq-figure {
  margin-bottom: 32px;
}

.faq-group {
  scroll-margin-top: 120px;
}

.faq-group + .faq-group {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid #d9dede;
}

.faq-group-head {
  margin-bottom: 18px;
}

.faq-group-desc {
  margin: 10px 0 0;
  color: #5a6a70;
  font-size: 15px;
}

.faq-related {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid #d9dede;
}

.faq-related .section-title {
  margin-bottom: 18px;
}

.faq-related .related-links {
  display: grid;
  gap: 14px;
  max-width: none;
  padding: 0;
  border-top: 0;
}

.faq-related .related-item {
  padding: 16px 20px;
  border: 1px solid #d9dede;
  border-left: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.faq-related .related-item a {
  display: inline-block;
  margin-bottom: 6px;
  color: #1f4e5f;
  font-size: 16px;
  font-weight: 600;
}

.faq-related .related-item p {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   pages · 合作洽谈
   -------------------------------------------------------------------------- */

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

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

.cooperate-prep .section-title,
.cooperate-describe .section-title {
  margin-bottom: 12px;
}

.prep-list {
  margin-top: 20px;
  counter-reset: prep;
  border-top: 1px solid #eef1ef;
}

.prep-item {
  position: relative;
  padding: 18px 0 18px 46px;
  border-bottom: 1px solid #eef1ef;
  counter-increment: prep;
}

.prep-item::before {
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 20px;
  color: #2e7d6f;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.prep-name {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 700;
  color: #1f4e5f;
}

.prep-desc {
  margin: 0 0 8px;
  color: #1b2a31;
  font-size: 15px;
  line-height: 1.75;
}

.prep-check {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid #b9793e;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.cooperate-figure {
  margin: 32px 0;
}

.describe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.describe-item {
  padding: 20px;
  border: 1px solid #d9dede;
  border-top: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.describe-name {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 700;
  color: #1f4e5f;
}

.describe-text {
  margin: 0 0 10px;
  color: #1b2a31;
  font-size: 14px;
  line-height: 1.7;
}

.describe-example {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.aside-box {
  padding: 22px;
  border: 1px solid #d9dede;
  border-top: 3px solid #2e7d6f;
  border-radius: 6px;
  background-color: #ffffff;
}

.aside-box + .aside-box {
  margin-top: 20px;
}

.aside-title {
  margin-bottom: 14px;
  font-size: 18px;
  font-weight: 700;
  color: #1f4e5f;
}

.node-list {
  border-top: 1px solid #eef1ef;
}

.node-item {
  position: relative;
  padding: 14px 0 14px 34px;
  border-bottom: 1px solid #eef1ef;
}

.node-item:last-child {
  border-bottom: 0;
}

.node-step {
  position: absolute;
  left: 0;
  top: 15px;
  color: #b9793e;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.node-name {
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 700;
  color: #1f4e5f;
}

.node-desc {
  margin: 0;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.aside-note {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 3px solid #2e7d6f;
  color: #5a6a70;
  font-size: 14px;
  line-height: 1.7;
}

.aside-links {
  margin-top: 10px;
}

.aside-links li + li {
  margin-top: 8px;
}

.aside-links a {
  color: #1f4e5f;
  font-size: 14px;
  font-weight: 600;
  border-bottom: 1px solid #b9c9cd;
}

.aside-links a:hover,
.aside-links a:focus-visible {
  color: #2e7d6f;
  border-bottom-color: #2e7d6f;
}

/* --------------------------------------------------------------------------
   pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  padding: 64px 0 24px;
}

.error-wrap {
  max-width: 720px;
  padding: 32px;
  border: 1px solid #d9dede;
  border-left: 3px solid #1f4e5f;
  border-radius: 6px;
  background-color: #ffffff;
}

.error-code {
  margin-bottom: 8px;
  color: #b9793e;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.error-title {
  margin-bottom: 12px;
  font-size: 30px;
  font-weight: 700;
  color: #1f4e5f;
}

.error-text {
  max-width: 560px;
  color: #5a6a70;
  font-size: 16px;
}

.error-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin: 24px 0;
}

.error-links a {
  display: block;
  padding: 12px 16px;
  border: 1px solid #d9dede;
  border-left: 3px solid #2e7d6f;
  border-radius: 6px;
  color: #1f4e5f;
  font-size: 15px;
  font-weight: 600;
}

.error-links a:hover,
.error-links a:focus-visible {
  border-color: #1f4e5f;
  border-left-color: #1f4e5f;
  color: #2e7d6f;
}

.error-actions {
  margin: 0;
}

/* 滚动进入动画（仅增强，不影响初始可见） */

.reveal {
  animation: reveal-in 0.5s ease both;
}

@keyframes reveal-in {
  from {
    transform: translateY(10px);
  }
  to {
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    animation: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms;
  }
}

/* --------------------------------------------------------------------------
   responsive · 1024px 断点
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .container,
  .header-inner,
  .breadcrumb,
  .page-header {
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav-link {
    padding: 8px 9px;
    font-size: 14px;
  }

  .nav-cta {
    padding: 8px 14px;
    font-size: 14px;
  }

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

  .hero-card-main {
    padding: 26px 24px 24px;
  }

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

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

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

  .cooperate-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 26px 24px;
  }

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

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

  .faq-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .faq-toc {
    position: static;
  }

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

  .faq-toc-list li + li {
    margin-top: 0;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }

  .footer-desc {
    max-width: none;
  }

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

  .pick-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --------------------------------------------------------------------------
   responsive · 640px 断点（移动端）
   -------------------------------------------------------------------------- */

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .container,
  .header-inner,
  .breadcrumb,
  .page-header {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* 页头与移动导航 */

  .header-inner {
    gap: 12px;
    min-height: 60px;
  }

  .brand {
    font-size: 19px;
  }

  .site-nav {
    flex: 0 0 auto;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
  }

  .nav-list.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .mobile-nav:not([hidden]) {
    display: block;
  }

  .site-header.is-nav-open {
    border-bottom-color: #d9dede;
  }

  /* 标题与正文 */

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

  .section {
    padding: 36px 0;
  }

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

  .hero-section {
    padding: 28px 0 8px;
  }

  .hero-card-main {
    padding: 22px 18px 20px;
  }

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

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .services-grid,
  .topics-grid,
  .topic-grid,
  .scenes-grid,
  .delivery-grid,
  .delivery-items .delivery-grid,
  .process-track,
  .related-grid,
  .link-cards,
  .describe-grid,
  .revision-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .process-step {
    padding: 18px 16px 16px;
  }

  .cooperate-inner {
    padding: 22px 18px;
  }

  .cooperate-side {
    padding: 18px;
  }

  .catalog-card {
    padding: 20px 18px 18px 22px;
  }

  .combine-item {
    padding: 18px 18px 16px 50px;
  }

  .combine-item::before {
    left: 18px;
  }

  .step-item {
    padding: 16px 16px;
  }

  .prep-item {
    padding-left: 38px;
  }

  .related-links {
    padding: 20px 16px;
  }

  .topic-index-bar {
    top: 60px;
  }

  .topic-index-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .topic-index-item {
    flex: 0 0 auto;
  }

  .topic-index-item a {
    white-space: nowrap;
  }

  .faq-question {
    padding: 14px 44px 14px 16px;
    font-size: 15px;
  }

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

  .error-main {
    padding: 40px 0 16px;
  }

  .error-wrap {
    padding: 24px 18px;
  }

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

  /* 页脚 */

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 0 24px;
  }

  .footer-links li {
    margin-bottom: 6px;
  }

  .footer-links a {
    display: inline-block;
    min-height: 28px;
    line-height: 28px;
  }
}

/* 移动端导航展开时锁定背景滚动 */

body.nav-open {
  overflow: hidden;
}