/* ==========================================================================
   91吃瓜中心 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

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

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

body {
  margin: 0;
  background-color: #ffffff;
  color: #111111;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
  color: #111111;
}

p {
  margin: 0;
}

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

a {
  color: #0e7c6b;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid #0e7c6b;
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: #ffffff;
  border-bottom: 1px solid #e4e4e4;
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.inner-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 72px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.home-main > .section,
.home-main > .hero {
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: 64px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 32px;
}

.section-head h2,
.section-title {
  font-size: 28px;
}

.section-desc,
.section-lead,
.section-intro {
  margin-top: 10px;
  color: #6b6b6b;
  font-size: 16px;
}

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

.section-more a {
  font-weight: 600;
}

/* 面包屑与页面标题区 */

.breadcrumb {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: #6b6b6b;
}

.breadcrumb a {
  color: #6b6b6b;
}

.breadcrumb a:hover {
  color: #0e7c6b;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: #b9b9b9;
}

.breadcrumb-current {
  color: #111111;
}

.page-header {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 24px 0;
}

.page-title {
  font-size: 40px;
  line-height: 1.25;
}

.page-hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 24px 0;
}

.page-hero-inner {
  max-width: 760px;
}

.page-head {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 24px 0;
}

.page-lead {
  max-width: 760px;
  margin-top: 12px;
  color: #6b6b6b;
  font-size: 17px;
}

/* 页脚 */

.site-footer {
  margin-top: 72px;
  border-top: 1px solid #e4e4e4;
  background-color: #f5f5f4;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand .footer-name {
  font-size: 18px;
  font-weight: 600;
  color: #111111;
}

.footer-brand .footer-desc {
  margin-top: 10px;
  max-width: 300px;
  color: #6b6b6b;
  font-size: 14px;
  line-height: 1.7;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #111111;
  margin-bottom: 12px;
}

.footer-list li + li {
  margin-top: 8px;
}

.footer-list a {
  color: #6b6b6b;
  font-size: 14px;
}

.footer-list a:hover {
  color: #0e7c6b;
}

.footer-bottom {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid #e4e4e4;
}

.footer-copy {
  color: #6b6b6b;
  font-size: 13px;
}

.back-to-top {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
  cursor: pointer;
}

.back-to-top:hover {
  border-color: #0e7c6b;
  color: #0e7c6b;
}

.back-to-top-icon {
  display: block;
  width: 10px;
  height: 10px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg) translate(1px, 1px);
}

/* --------------------------------------------------------------------------
   components · 页头与导航
   -------------------------------------------------------------------------- */

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: #111111;
}

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
}

.brand-tagline {
  font-size: 12px;
  color: #6b6b6b;
  line-height: 1.4;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: #111111;
}

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

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  color: #111111;
  font-size: 15px;
}

.nav-link:hover {
  color: #0e7c6b;
  text-decoration: none;
}

.nav-link.is-current {
  color: #0e7c6b;
  font-weight: 600;
}

/* 通用按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: #0e7c6b;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #0b6558;
}

.btn-outline {
  border-color: #e4e4e4;
  color: #111111;
  background-color: #ffffff;
}

.btn-outline:hover {
  border-color: #0e7c6b;
  color: #0e7c6b;
}

.btn-ghost {
  border-color: transparent;
  color: #0e7c6b;
  background-color: transparent;
  padding-left: 4px;
  padding-right: 4px;
}

.btn-ghost:hover {
  text-decoration: underline;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
}

.button:hover {
  text-decoration: none;
}

.button-primary {
  background-color: #0e7c6b;
  color: #ffffff;
}

.button-primary:hover {
  background-color: #0b6558;
}

.card-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
  color: #0e7c6b;
}

.text-link {
  color: #0e7c6b;
  font-weight: 600;
  font-size: 14px;
}

/* 卡片通用 */

.service-card,
.term-card,
.related-card,
.entry-card,
.collab-card {
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.service-card:hover,
.term-card:hover,
.related-card:hover,
.entry-card:hover,
.collab-card:hover {
  border-color: #0e7c6b;
  transform: translateY(-2px);
}

/* 编号 */

.service-index,
.journey-index,
.process-index,
.entry-index,
.stage-num,
.step-index,
.path-index,
.step-bar-num {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: #0e7c6b;
  font-size: 14px;
}

/* 图片容器 */

.hero-figure,
.scenario-figure,
.media-figure,
.content-media,
.faq-media,
.prepare-figure,
.section-media {
  overflow: hidden;
  border-radius: 8px;
  background-color: #f5f5f4;
}

.hero-figure img,
.scenario-figure img,
.media-figure img,
.content-media img,
.faq-media img,
.prepare-figure img,
.section-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

figcaption,
.media-caption,
.faq-media-caption,
.figure-caption,
.scenario-figure figcaption {
  margin-top: 10px;
  color: #6b6b6b;
  font-size: 14px;
  line-height: 1.6;
}

/* 边界提示块 */

.boundary-block {
  background-color: #e8f3f1;
  border-radius: 8px;
  padding: 24px;
}

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

.boundary-item {
  padding-left: 16px;
  border-left: 2px solid #0e7c6b;
}

.boundary-name {
  font-size: 16px;
  font-weight: 600;
}

.boundary-reason,
.boundary-item p {
  margin-top: 4px;
  color: #6b6b6b;
  font-size: 14px;
}

/* 核查清单 */

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

.check-item {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.check-name {
  font-size: 17px;
}

.check-desc,
.check-output {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.check-output {
  color: #0e7c6b;
}

/* 折叠问答 */

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.faq-question {
  padding: 16px 20px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
}

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

.faq-question::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid #0e7c6b;
  border-bottom: 2px solid #0e7c6b;
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

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

.faq-answer {
  padding: 0 20px 18px;
  color: #333333;
  font-size: 15px;
}

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

.faq-tag {
  display: inline-block;
  margin-top: 10px;
  padding: 2px 10px;
  border-radius: 4px;
  background-color: #e8f3f1;
  color: #0e7c6b;
  font-size: 13px;
}

.faq-ref {
  margin-top: 10px;
  font-size: 14px;
}

/* 相关入口网格 */

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

.related-card,
.entry-card {
  display: block;
  padding: 22px;
  color: #111111;
}

.related-card:hover,
.entry-card:hover {
  text-decoration: none;
}

.related-name,
.entry-card-title {
  font-size: 18px;
}

.related-desc,
.entry-card-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

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

.hero {
  padding-top: 56px;
  padding-bottom: 8px;
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.hero-eyebrow {
  font-size: 14px;
  font-weight: 600;
  color: #0e7c6b;
}

.hero-copy h1 {
  margin-top: 12px;
  font-size: 40px;
  line-height: 1.25;
}

.hero-lead {
  margin-top: 16px;
  max-width: 560px;
  color: #6b6b6b;
  font-size: 17px;
}

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

.hero-footnote {
  margin-top: 20px;
  font-size: 14px;
  color: #6b6b6b;
}

.hero-figure {
  aspect-ratio: 4 / 3;
}

/* 服务项速览 */

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

.service-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.service-card .service-name {
  margin-top: 10px;
  font-size: 18px;
}

.service-def {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 600;
  color: #111111;
  line-height: 1.6;
}

.service-for {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.service-card .card-link {
  margin-top: auto;
  padding-top: 12px;
}

/* 角色旅程 */

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

.journey-step {
  padding: 22px;
  border-top: 2px solid #0e7c6b;
  background-color: #f5f5f4;
  border-radius: 0 0 8px 8px;
}

.journey-name {
  margin-top: 10px;
  font-size: 18px;
}

.journey-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

/* 场景对照 */

.scenario-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.scenario-col {
  padding: 22px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.scenario-title {
  font-size: 18px;
}

.scenario-col .scenario-figure {
  margin-top: 16px;
  aspect-ratio: 3 / 2;
}

.scenario-list {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.scenario-list li {
  position: relative;
  padding-left: 16px;
  color: #333333;
  font-size: 15px;
}

.scenario-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #0e7c6b;
}

.scenario-ref {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid #e4e4e4;
  color: #6b6b6b;
  font-size: 14px;
}

/* 合作流程预览 */

.process-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.process-node {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.process-name {
  margin-top: 10px;
  font-size: 17px;
}

.process-desc {
  margin-top: 8px;
  color: #333333;
  font-size: 14px;
}

.process-boundary {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed #e4e4e4;
  color: #0e7c6b;
  font-size: 13px;
}

/* 术语摘要 */

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

.term-card {
  padding: 20px;
}

.term-name {
  font-size: 17px;
}

.term-def {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

/* 合作对接入口 */

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

.entry-step {
  padding: 22px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.entry-name {
  margin-top: 10px;
  font-size: 18px;
}

.entry-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.entry-action {
  margin-top: 28px;
}

/* --------------------------------------------------------------------------
   pages · 服务能力
   -------------------------------------------------------------------------- */

.anchor-nav {
  margin-top: 32px;
  padding: 16px 0;
  border-top: 1px solid #e4e4e4;
  border-bottom: 1px solid #e4e4e4;
}

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

.anchor-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  color: #111111;
  font-size: 14px;
}

.anchor-link:hover {
  border-color: #0e7c6b;
  color: #0e7c6b;
  text-decoration: none;
}

.services-detail {
  margin-top: 48px;
}

.services-detail .section-lead {
  max-width: 760px;
}

.service-panel {
  margin-top: 28px;
  padding: 28px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 32px;
}

.service-panel-head {
  min-width: 0;
}

.service-panel-head .service-name {
  margin-top: 10px;
  font-size: 20px;
}

.service-panel-body {
  min-width: 0;
  max-width: 760px;
}

.service-panel-body p + p {
  margin-top: 12px;
}

.service-definition {
  font-size: 17px;
  font-weight: 600;
  color: #111111;
}

.service-paragraph {
  color: #333333;
  font-size: 15px;
}

.service-example {
  padding: 14px 16px;
  background-color: #f5f5f4;
  border-radius: 8px;
  color: #333333;
  font-size: 15px;
}

.service-terms {
  color: #6b6b6b;
  font-size: 14px;
}

.service-terms a + a {
  margin-left: 12px;
}

.not-accepted,
.prepare,
.related {
  margin-top: 56px;
}

.prepare-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.prepare-item {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.prepare-name {
  font-size: 17px;
}

.prepare-usage,
.prepare-note {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.contact-entry {
  margin-top: 56px;
}

.contact-entry .button {
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   pages · 适用场景
   -------------------------------------------------------------------------- */

.scenario-panels {
  margin-top: 40px;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.scenario-column {
  padding: 24px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
  min-width: 0;
}

.scenario-column-head {
  min-width: 0;
}

.scenario-column-title {
  font-size: 19px;
}

.scenario-column-sub {
  margin-top: 6px;
  color: #6b6b6b;
  font-size: 14px;
}

.scenario-column .scenario-figure {
  margin-top: 16px;
  aspect-ratio: 3 / 2;
}

.scenario-item {
  position: relative;
  padding-left: 16px;
  margin-top: 10px;
  color: #333333;
  font-size: 15px;
}

.scenario-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #0e7c6b;
}

.scenario-refs {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid #e4e4e4;
  font-size: 14px;
}

.scenario-refs a + a {
  margin-left: 12px;
}

.scenario-mapping,
.scenario-unsuitable,
.scenario-checklist,
.related-entry {
  margin-top: 56px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.mapping-table {
  min-width: 640px;
}

.mapping-caption {
  padding: 16px 20px 0;
  text-align: left;
  color: #6b6b6b;
  font-size: 14px;
}

.mapping-table th,
.mapping-table td {
  padding: 14px 20px;
  text-align: left;
  vertical-align: top;
  font-size: 15px;
  border-bottom: 1px solid #e4e4e4;
}

.mapping-table thead th {
  background-color: #f5f5f4;
  font-weight: 600;
  font-size: 14px;
  color: #111111;
}

.mapping-table tbody th {
  font-weight: 600;
  color: #111111;
}

.mapping-table tbody tr:last-child th,
.mapping-table tbody tr:last-child td {
  border-bottom: none;
}

.mapping-note {
  margin-top: 16px;
  font-size: 14px;
  color: #6b6b6b;
}

.checklist {
  display: grid;
  gap: 16px;
}

.checklist-item {
  padding: 20px;
  border-left: 2px solid #0e7c6b;
  background-color: #f5f5f4;
  border-radius: 0 8px 8px 0;
}

.checklist-name {
  font-size: 17px;
}

.checklist-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   pages · 合作流程
   -------------------------------------------------------------------------- */

.section-steps {
  padding-top: 40px;
}

.step-bar {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.step-bar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 12px 16px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
  color: #111111;
  font-size: 14px;
}

.step-bar-link:hover {
  border-color: #0e7c6b;
  color: #0e7c6b;
  text-decoration: none;
}

.step-bar-num {
  flex: 0 0 auto;
}

.step-bar-name {
  min-width: 0;
}

.section-stages {
  padding-top: 48px;
}

.stage-block {
  margin-top: 24px;
  padding: 28px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.stage-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.stage-name {
  font-size: 20px;
}

.stage-body {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

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

.stage-subtitle {
  font-size: 15px;
  font-weight: 600;
  color: #0e7c6b;
}

.stage-list {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.stage-list li {
  position: relative;
  padding-left: 16px;
  color: #333333;
  font-size: 15px;
}

.stage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #0e7c6b;
}

.section-deliverables,
.section-communication,
.section-related {
  padding-top: 56px;
}

.section-media {
  margin-top: 24px;
  aspect-ratio: 16 / 9;
}

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

.deliverable-item {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.deliverable-name {
  font-size: 17px;
}

.deliverable-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.deliverable-stage {
  margin-top: 10px;
  color: #0e7c6b;
  font-size: 13px;
}

.comm-list {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.comm-item {
  padding: 20px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.comm-name {
  font-size: 17px;
}

.comm-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.section-related .related-grid {
  margin-top: 24px;
}

.section-related .related-card {
  padding: 22px;
}

.related-links {
  max-width: 1080px;
  margin: 32px auto 0;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}

.related-links-label {
  color: #6b6b6b;
}

.related-links-item {
  color: #0e7c6b;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   pages · 术语与标准
   -------------------------------------------------------------------------- */

.page-head + .page-media {
  margin-top: 24px;
}

.page-media .media-figure {
  aspect-ratio: 16 / 9;
}

.page-layout {
  margin-top: 48px;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

.standards-main .section-desc {
  max-width: 760px;
  margin-bottom: 24px;
}

.term-card {
  padding: 24px;
}

.term-card + .term-card {
  margin-top: 20px;
}

.term-definition {
  margin-top: 10px;
  font-size: 17px;
  font-weight: 600;
  color: #111111;
}

.term-block {
  margin-top: 16px;
}

.term-label {
  font-size: 14px;
  font-weight: 600;
  color: #0e7c6b;
}

.term-block p {
  margin-top: 6px;
  color: #333333;
  font-size: 15px;
}

.standards-aside {
  min-width: 0;
  display: grid;
  gap: 24px;
  position: sticky;
  top: 88px;
}

.aside-block {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.aside-title {
  font-size: 17px;
  margin-bottom: 14px;
}

.aside-boundary .boundary-list {
  gap: 12px;
}

.aside-boundary .boundary-name {
  font-size: 15px;
}

.aside-check .check-list {
  gap: 12px;
}

.aside-check .check-item {
  padding: 0;
  border: none;
  background-color: transparent;
}

.aside-check .check-name {
  font-size: 15px;
}

.aside-check .check-item p {
  margin-top: 6px;
  color: #6b6b6b;
  font-size: 14px;
}

.related-section {
  margin-top: 56px;
}

.related-section .related-grid {
  margin-top: 24px;
}

/* --------------------------------------------------------------------------
   pages · 团队与加入
   -------------------------------------------------------------------------- */

.content-media-inline {
  margin-top: 24px;
  aspect-ratio: 16 / 9;
}

.section-positioning,
.section-collaboration,
.section-roles,
.section-requirements,
.section-join,
.section-daily,
.section-boundary,
.section-contact-entry {
  padding-top: 56px;
}

.positioning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

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

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

.positioning-col p {
  margin-top: 12px;
  color: #333333;
  font-size: 15px;
}

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

.collab-card {
  padding: 22px;
}

.card-title {
  font-size: 17px;
}

.collab-card p {
  margin-top: 10px;
  color: #6b6b6b;
  font-size: 14px;
}

.role-list,
.requirement-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.role-item,
.requirement-item {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.role-title,
.requirement-title {
  font-size: 17px;
}

.role-item p,
.requirement-item p {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

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

.join-step {
  padding: 20px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.step-title {
  margin-top: 10px;
  font-size: 17px;
}

.join-step p {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

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

.daily-col p {
  margin-top: 10px;
  color: #6b6b6b;
  font-size: 14px;
}

.entry-panel {
  padding: 32px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.entry-panel p {
  margin-top: 12px;
  max-width: 760px;
  color: #333333;
  font-size: 15px;
}

.entry-links {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

.faq-nav-section {
  margin-top: 40px;
}

.faq-group-nav {
  margin-top: 20px;
}

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

.faq-group-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  color: #111111;
  font-size: 14px;
}

.faq-group-link:hover {
  border-color: #0e7c6b;
  color: #0e7c6b;
  text-decoration: none;
}

.faq-media {
  margin-top: 24px;
  aspect-ratio: 16 / 9;
  max-width: 760px;
}

.faq-group {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #e4e4e4;
}

.faq-group-header {
  max-width: 760px;
  margin-bottom: 20px;
}

.faq-group .faq-list {
  max-width: 760px;
}

.faq-uncovered {
  margin-top: 56px;
  padding: 32px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.faq-uncovered .section-desc {
  max-width: 760px;
  margin-bottom: 20px;
}

/* --------------------------------------------------------------------------
   pages · 合作对接
   -------------------------------------------------------------------------- */

.section-prepare,
.section-path,
.section-confirm,
.section-obstacle,
.section-advance,
.section-related {
  padding-top: 56px;
}

.prepare-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 32px;
  align-items: start;
}

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

.prepare-figure {
  aspect-ratio: 4 / 3;
}

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

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

.path-step {
  padding: 20px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.path-name {
  margin-top: 10px;
  font-size: 17px;
}

.path-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.confirm-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.confirm-item {
  padding: 20px;
  border-left: 2px solid #0e7c6b;
  background-color: #f5f5f4;
  border-radius: 0 8px 8px 0;
}

.confirm-name {
  font-size: 17px;
}

.confirm-reason {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

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

.obstacle-item {
  padding: 20px;
  border: 1px solid #e4e4e4;
  border-radius: 8px;
  background-color: #ffffff;
}

.obstacle-name {
  font-size: 17px;
}

.obstacle-solution {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

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

.advance-item {
  padding: 20px;
  background-color: #f5f5f4;
  border-radius: 8px;
}

.advance-name {
  font-size: 17px;
}

.advance-desc {
  margin-top: 8px;
  color: #6b6b6b;
  font-size: 14px;
}

.advance-item .text-link {
  display: inline-block;
  margin-top: 10px;
}

.section-related .related-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.error-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 24px 0;
}

.error-panel {
  max-width: 760px;
}

.error-code {
  font-size: 15px;
  font-weight: 600;
  color: #0e7c6b;
}

.error-panel h1 {
  margin-top: 12px;
  font-size: 40px;
  line-height: 1.25;
}

.error-text {
  margin-top: 16px;
  color: #6b6b6b;
  font-size: 17px;
}

.error-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid #e4e4e4;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-figure {
    aspect-ratio: 16 / 9;
  }

  .service-grid,
  .scenario-columns,
  .scenario-grid,
  .collab-grid,
  .daily-grid,
  .comm-list,
  .obstacle-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .journey-list,
  .term-grid,
  .entry-steps,
  .join-steps,
  .path-steps,
  .step-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .standards-aside {
    position: static;
  }

  .service-panel {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

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

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

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

@media (max-width: 768px) {
  body {
    font-size: 15px;
    line-height: 1.8;
  }

  .site-nav {
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 220px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    border: 1px solid #e4e4e4;
    border-radius: 8px;
    background-color: #ffffff;
    box-shadow: 0 8px 24px rgba(17, 17, 17, 0.08);
    display: none;
  }

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

  .nav-link {
    width: 100%;
    padding: 0 12px;
  }

  .page-title,
  .hero-copy h1,
  .error-panel h1 {
    font-size: 28px;
  }

  .section-head h2,
  .section-title {
    font-size: 22px;
  }

  .service-def,
  .term-definition,
  .service-definition {
    font-size: 16px;
  }

  .service-grid,
  .scenario-columns,
  .scenario-grid,
  .journey-list,
  .term-grid,
  .entry-steps,
  .collab-grid,
  .daily-grid,
  .comm-list,
  .obstacle-list,
  .join-steps,
  .path-steps,
  .step-bar,
  .process-track,
  .stage-body,
  .prepare-list,
  .deliverable-list,
  .confirm-list,
  .role-list,
  .requirement-list,
  .positioning-grid,
  .related-grid,
  .entry-grid,
  .section-related .related-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .service-panel,
  .stage-block,
  .term-card,
  .faq-uncovered,
  .entry-panel {
    padding: 20px;
  }

  .boundary-block {
    padding: 20px;
  }

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

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

@media (max-width: 480px) {
  .header-inner,
  .inner-main,
  .container,
  .breadcrumb,
  .page-header,
  .page-hero,
  .page-head,
  .footer-inner,
  .footer-bottom,
  .related-links,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .home-main > .section,
  .home-main > .hero {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-actions .btn,
  .error-actions .btn {
    flex: 1 1 100%;
  }

  .hero-actions,
  .error-actions,
  .entry-links {
    flex-direction: column;
    align-items: stretch;
  }

  .entry-links .btn {
    width: 100%;
  }
}

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

  .service-card,
  .term-card,
  .related-card,
  .entry-card,
  .collab-card {
    transition: none;
  }
}