/* ==========================================================================
   天美星空无限 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ==========================================================================
   base
   ========================================================================== */

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

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

body.site-body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: #1f2726;
  background-color: #f7f7f3;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.32;
  color: #1f2726;
}

p {
  margin: 0;
}

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

dl,
dd {
  margin: 0;
}

dt {
  font-weight: 600;
}

a {
  color: #2f5d55;
  text-decoration: none;
  transition: color 0.18s ease;
}

a:hover {
  color: #9a7352;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid #9a7352;
  outline-offset: 3px;
  border-radius: 4px;
}

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

figure {
  margin: 0;
}

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

strong {
  font-weight: 600;
  color: #1f2726;
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  background: #1f2726;
  color: #f7f7f3;
  border-radius: 6px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
  color: #f7f7f3;
}

/* ==========================================================================
   layout
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #f7f7f3;
  border-bottom: 1px solid #d9ded9;
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-logo {
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
  color: #1f2726;
  white-space: nowrap;
}

.brand-logo:hover {
  color: #9a7352;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
  min-width: 0;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px 22px;
}

.nav-item {
  display: flex;
}

.nav-item > a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 2px;
  font-size: 15px;
  color: #3c4744;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-item > a:hover {
  color: #9a7352;
  border-bottom-color: #9a7352;
}

.nav-item.is-current > a,
.nav-item > a.is-current {
  color: #1f2726;
  border-bottom-color: #9a7352;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0 11px;
  background: transparent;
  border: 1px solid #d9ded9;
  border-radius: 6px;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #1f2726;
  border-radius: 2px;
}

.site-main {
  display: block;
}

.inner-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 72px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: #5b6663;
}

.breadcrumb a {
  color: #5b6663;
}

.breadcrumb a:hover {
  color: #9a7352;
}

.breadcrumb-sep {
  color: #a9b2ae;
}

.breadcrumb-current {
  color: #1f2726;
}

.page-header {
  padding: 18px 0 0;
}

.page-title {
  font-size: 38px;
  line-height: 1.24;
  font-weight: 600;
  color: #1f2726;
  max-width: 760px;
}

.container,
.section-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 56px 0 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 26px;
}

.section-head h2,
.section-heading h2 {
  font-size: 26px;
  line-height: 1.3;
  color: #1f2726;
}

.section-lead,
.section-note,
.section-desc {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: #5b6663;
}

.section-eyebrow,
.section-kicker {
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.section-foot {
  margin-top: 20px;
  font-size: 15px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  color: #2f5d55;
  border-bottom: 1px solid #c6cfca;
}

.text-link::after {
  content: "→";
  margin-left: 6px;
  font-size: 14px;
  transition: transform 0.18s ease;
}

.text-link:hover {
  color: #9a7352;
  border-bottom-color: #9a7352;
}

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

/* 页脚 */

.site-footer {
  margin-top: 64px;
  background-color: #1f2726;
  color: #cfd6d2;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 24px 28px;
}

.footer-summary {
  max-width: 640px;
  font-size: 15px;
  line-height: 1.8;
  color: #dbe1dd;
}

.footer-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 32px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid #38423f;
}

.footer-group-title {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  color: #f7f7f3;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  color: #cfd6d2;
}

.footer-links a:hover {
  color: #d9b98f;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid #38423f;
}

.footer-note {
  font-size: 13px;
  line-height: 1.65;
  color: #9aa5a1;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 13px;
  color: #cfd6d2;
}

.back-to-top::after {
  content: "↑";
  margin-left: 6px;
}

.back-to-top:hover {
  color: #d9b98f;
}

/* ==========================================================================
   components
   ========================================================================== */

/* 媒体图 */

.media-figure,
.section-figure,
.section-media,
.hero-figure,
.content-media,
.overview-figure,
.page-hero-figure {
  overflow: hidden;
  border-radius: 8px;
  background-color: #eef1ed;
  border: 1px solid #d9ded9;
}

.media-figure img,
.section-figure img,
.section-media img,
.hero-figure img,
.content-media img,
.overview-figure img,
.page-hero-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.media-figure figcaption,
.section-figure figcaption,
.section-media figcaption,
.hero-figure figcaption,
.content-media figcaption,
.overview-figure figcaption,
.page-hero-figure figcaption,
.media-caption,
.figure-caption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: #5b6663;
  background-color: #ffffff;
  border-top: 1px solid #d9ded9;
}

/* 表格 */

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.data-table,
.stage-table {
  width: 100%;
  min-width: 640px;
  font-size: 14px;
  line-height: 1.7;
  border-collapse: collapse;
}

.data-table thead th,
.stage-table thead th {
  padding: 14px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: #3c4744;
  background-color: #f0f2ee;
  border-bottom: 1px solid #d9ded9;
  white-space: nowrap;
}

.data-table tbody th,
.stage-table tbody th {
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  color: #1f2726;
  background-color: #fafbf8;
  border-bottom: 1px solid #e6eae5;
  white-space: nowrap;
}

.data-table tbody td,
.stage-table tbody td {
  padding: 14px 16px;
  vertical-align: top;
  color: #3c4744;
  border-bottom: 1px solid #e6eae5;
}

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

.table-note {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: #5b6663;
}

/* FAQ */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 760px;
}

.faq-item {
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.faq-item summary {
  position: relative;
  display: block;
  padding: 16px 46px 16px 18px;
  min-height: 44px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: #1f2726;
  cursor: pointer;
  list-style: none;
}

.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: #9a7352;
  line-height: 1;
}

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

.faq-item[open] summary {
  border-bottom: 1px solid #e6eae5;
}

.faq-item p {
  padding: 14px 18px 18px;
  font-size: 15px;
  line-height: 1.8;
  color: #3c4744;
}

.faq-answer {
  padding: 0;
}

.faq-answer p {
  padding: 14px 18px 18px;
  font-size: 15px;
  line-height: 1.8;
  color: #3c4744;
}

/* 延伸阅读 / 关联列表 */

.reading-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.reading-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.reading-item a {
  font-size: 15px;
  font-weight: 600;
  color: #2f5d55;
}

.reading-item a:hover {
  color: #9a7352;
}

.reading-note,
.reading-desc {
  font-size: 13px;
  line-height: 1.65;
  color: #5b6663;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.related-item {
  padding: 18px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.related-item a {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #2f5d55;
}

.related-item a:hover {
  color: #9a7352;
}

.related-item p {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: #5b6663;
}

.related-title {
  display: block;
  font-weight: 600;
}

.related-desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.65;
  color: #5b6663;
}

/* 页内锚点 */

.anchor-list,
.index-list,
.aside-anchor-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.anchor-list a,
.index-list a,
.aside-anchor-list a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  color: #3c4744;
  border-bottom: 1px solid transparent;
}

.anchor-list a:hover,
.index-list a:hover,
.aside-anchor-list a:hover {
  color: #9a7352;
  border-bottom-color: #d9c3a8;
}

.aside-title,
.index-title,
.aside-label {
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
  color: #5b6663;
}

/* ==========================================================================
   pages
   ========================================================================== */

/* ---------- 首页 ---------- */

.home-main {
  display: block;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px 40px;
  align-items: start;
}

.hero-wide {
  grid-column: 1;
  min-width: 0;
}

.hero-eyebrow {
  margin-bottom: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.hero-wide h1 {
  font-size: 46px;
  line-height: 1.18;
  font-weight: 600;
  color: #1f2726;
}

.hero-lead {
  max-width: 620px;
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.8;
  color: #3c4744;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 22px;
}

.hero-figure {
  margin-top: 28px;
}

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

.hero-index {
  grid-column: 2;
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.hero-index-title {
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #1f2726;
}

.hero-index-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-index-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  color: #3c4744;
  border-bottom: 1px solid #eef1ed;
}

.hero-index-list li:last-child a {
  border-bottom: 0;
}

.hero-index-list a:hover {
  color: #9a7352;
}

.content-media-primary {
  grid-column: 1 / -1;
  margin-top: 4px;
}

.content-media-primary img {
  aspect-ratio: 21 / 9;
}

/* 主题介绍与协作原则 */

.intro-principles {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 24px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px 48px;
  align-items: start;
}

.intro-block {
  min-width: 0;
}

.intro-block h2 {
  font-size: 26px;
  line-height: 1.3;
  color: #1f2726;
}

.intro-block p {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: #3c4744;
}

.principles-block {
  min-width: 0;
  padding: 22px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.principles-block h3 {
  font-size: 17px;
  color: #1f2726;
}

.principles-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 14px;
}

.principles-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid #eef1ed;
}

.principles-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.principle-name {
  font-size: 15px;
  font-weight: 600;
  color: #1f2726;
}

.principle-desc {
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

/* 能力索引结果区 */

.capability-preview,
.method-preview,
.delivery-preview,
.start-preview,
.faq-preview,
.boundary-band {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 24px 0;
}

.task-anchor-band {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.task-anchor-band a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
  color: #3c4744;
  background-color: #ffffff;
  border: 1px solid #d9ded9;
  border-radius: 6px;
}

.task-anchor-band a:hover {
  color: #9a7352;
  border-color: #d9c3a8;
}

.capability-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #d9ded9;
}

.capability-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) minmax(0, 320px);
  gap: 20px 24px;
  padding: 20px 0;
  border-bottom: 1px solid #d9ded9;
}

.capability-no {
  font-size: 15px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
  line-height: 1.6;
}

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

.capability-main h3 {
  font-size: 17px;
  line-height: 1.5;
  color: #1f2726;
}

.capability-task {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

.capability-meta {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.capability-meta p {
  font-size: 14px;
  line-height: 1.7;
  color: #3c4744;
}

.meta-label {
  display: inline-block;
  margin-right: 6px;
  font-size: 12px;
  color: #5b6663;
  background-color: #eef1ed;
  padding: 1px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

/* 项目方法阶段表 */

.stage-table {
  min-width: 680px;
}

/* 交付档案双列 */

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

.delivery-catalog,
.delivery-criteria {
  min-width: 0;
  padding: 22px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.delivery-catalog h3,
.delivery-criteria h3 {
  font-size: 17px;
  color: #1f2726;
}

.delivery-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.delivery-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 12px;
  border-top: 1px solid #eef1ed;
}

.delivery-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.delivery-name {
  font-size: 15px;
  font-weight: 600;
  color: #1f2726;
}

.delivery-use {
  font-size: 14px;
  line-height: 1.7;
  color: #5b6663;
}

.criteria-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.criteria-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: #3c4744;
}

.criteria-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #9a7352;
}

.criteria-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid #eef1ed;
  font-size: 13px;
  line-height: 1.7;
  color: #5b6663;
}

.delivery-criteria .text-link {
  margin-top: 8px;
}

/* 启动准备三步 */

.start-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #d9ded9;
}

.start-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid #d9ded9;
}

.start-no {
  font-size: 15px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
  line-height: 1.6;
}

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

.start-body h3 {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.start-body p {
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

/* 机构边界通栏 */

.boundary-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  gap: 28px 40px;
  align-items: start;
}

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

.boundary-main h2 {
  font-size: 24px;
  line-height: 1.32;
  color: #1f2726;
}

.boundary-main p {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: #3c4744;
}

.boundary-main .text-link {
  margin-top: 8px;
}

.boundary-links {
  min-width: 0;
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.boundary-links h3 {
  margin-bottom: 10px;
  font-size: 15px;
  color: #1f2726;
}

/* ---------- 内页通用页眉区 ---------- */

.page-hero {
  padding: 20px 0 0;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px 40px;
  align-items: start;
}

.page-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px 40px;
  align-items: start;
}

.page-hero-main {
  min-width: 0;
}

.eyebrow {
  margin-bottom: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: #9a7352;
}

.page-hero-summary,
.page-hero-lead,
.page-lead {
  font-size: 16px;
  line-height: 1.8;
  color: #3c4744;
  max-width: 620px;
}

.page-hero-aside,
.page-hero-index {
  min-width: 0;
  padding: 18px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

/* 项目方法页独有页头 */

.page-head {
  padding: 20px 0 0;
}

.page-head-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px 40px;
  align-items: start;
}

.page-head-main {
  min-width: 0;
}

.page-head-summary {
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: #3c4744;
}

.page-head-aside {
  min-width: 0;
  padding: 18px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

/* ---------- 能力索引页 ---------- */

.section-anchors {
  padding-top: 36px;
}

.anchor-band {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.anchor-chip {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  font-size: 14px;
  color: #3c4744;
  background-color: #ffffff;
  border: 1px solid #d9ded9;
  border-radius: 6px;
}

.anchor-chip:hover {
  color: #9a7352;
  border-color: #d9c3a8;
}

.count-note {
  font-size: 13px;
  line-height: 1.7;
  color: #5b6663;
}

.service-group {
  padding-top: 22px;
}

.service-group:first-child {
  padding-top: 0;
}

.group-title {
  margin-bottom: 8px;
  padding-bottom: 8px;
  font-size: 15px;
  font-weight: 600;
  color: #9a7352;
  border-bottom: 1px solid #d9ded9;
}

.service-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  gap: 16px 32px;
  padding: 18px 0;
  border-bottom: 1px solid #e6eae5;
}

.service-row-primary {
  min-width: 0;
}

.service-index {
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
  line-height: 1.6;
}

.service-name {
  margin-top: 2px;
  font-size: 17px;
  line-height: 1.5;
  color: #1f2726;
}

.service-task {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

.service-row-secondary {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-field {
  font-size: 14px;
  line-height: 1.7;
  color: #3c4744;
}

.field-guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px 40px;
  align-items: start;
}

.field-guide-main {
  min-width: 0;
}

.field-definition {
  display: grid;
  grid-template-columns: minmax(120px, 160px) minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid #d9ded9;
}

.field-definition dt {
  padding: 14px 16px 14px 0;
  font-size: 14px;
  color: #1f2726;
  border-bottom: 1px solid #e6eae5;
}

.field-definition dd {
  padding: 14px 0;
  font-size: 14px;
  line-height: 1.75;
  color: #3c4744;
  border-bottom: 1px solid #e6eae5;
}

.field-guide-aside {
  min-width: 0;
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.reading-order {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
  counter-reset: reading;
}

.reading-order li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.7;
  color: #3c4744;
  counter-increment: reading;
}

.reading-order li::before {
  content: counter(reading) ".";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.boundary-note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid #eef1ed;
  font-size: 13px;
  line-height: 1.7;
  color: #5b6663;
}

.section-figure {
  margin-top: 28px;
}

.section-figure img {
  aspect-ratio: 21 / 9;
}

/* ---------- 项目方法页 ---------- */

.section-overview {
  padding-top: 36px;
}

.overview-figure {
  margin-bottom: 26px;
}

.overview-figure img {
  aspect-ratio: 21 / 9;
}

.stage-path-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stage-path-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.stage-path-num {
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

.stage-path-body {
  min-width: 0;
}

.stage-path-name {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.stage-path-goal {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: #5b6663;
}

.section-stage-table .table-wrap {
  margin-top: 0;
}

.pause-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pause-item {
  padding: 18px 20px;
  border: 1px solid #d9ded9;
  border-left: 3px solid #9a7352;
  border-radius: 8px;
  background-color: #ffffff;
}

.pause-item-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.pause-item-num {
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.pause-item-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: #3c4744;
}

.pause-item-fallback {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #d9ded9;
  font-size: 13px;
  line-height: 1.75;
  color: #5b6663;
}

.deviation-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.deviation-item {
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.deviation-item-title {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
  margin-bottom: 12px;
}

.deviation-fields {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 8px 12px;
}

.deviation-fields dt {
  font-size: 13px;
  color: #5b6663;
}

.deviation-fields dd {
  font-size: 14px;
  line-height: 1.7;
  color: #3c4744;
}

/* ---------- 交付档案页 ---------- */

.section-deliverables {
  padding-top: 36px;
}

.section-media {
  margin-bottom: 22px;
}

.section-media img {
  aspect-ratio: 21 / 9;
}

.checkpoint-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid #d9ded9;
  counter-reset: checkpoint;
}

.checkpoint-item {
  padding: 16px 0;
  border-bottom: 1px solid #e6eae5;
  counter-increment: checkpoint;
}

.checkpoint-title {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.section-acceptance .checkpoint-title::before {
  content: counter(checkpoint, decimal-leading-zero);
  margin-right: 10px;
  font-size: 13px;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.checkpoint-desc {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.8;
  color: #3c4744;
}

.scope-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.scope-panel {
  min-width: 0;
  padding: 22px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.scope-panel h3 {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.scope-exclude {
  background-color: #fbfaf7;
}

.scope-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: #3c4744;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #718b86;
}

.scope-exclude .scope-list li::before {
  background-color: #9a7352;
}

.note-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 760px;
}

.note-body p {
  font-size: 15px;
  line-height: 1.8;
  color: #3c4744;
}

/* ---------- 启动指南页 ---------- */

.section-preparation {
  padding-top: 36px;
}

.prep-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.prep-item {
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.prep-item-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.prep-index {
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.prep-title {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.prep-need {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: #3c4744;
}

.prep-standard {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #d9ded9;
  font-size: 13px;
  line-height: 1.75;
  color: #5b6663;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-item {
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.step-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.step-number {
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
}

.step-title {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.step-action {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: #3c4744;
}

.step-material,
.step-result {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #d9ded9;
  font-size: 13px;
  line-height: 1.75;
  color: #5b6663;
}

.section-checkpoints .checkpoint-list {
  gap: 14px;
  border-top: 0;
}

.section-checkpoints .checkpoint-item {
  padding: 18px 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.checkpoint-question {
  font-size: 16px;
  line-height: 1.55;
  color: #1f2726;
}

.checkpoint-detail {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.8;
  color: #3c4744;
}

.next-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.next-action-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.next-action-title {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.next-action-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

.next-action-card .text-link {
  margin-top: auto;
  padding-top: 12px;
  align-self: flex-start;
}

/* ---------- 合作问答页 ---------- */

.faq-visual {
  padding: 24px 0 0;
}

.faq-visual .media-figure img {
  aspect-ratio: 21 / 9;
}

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

.faq-section .section-head {
  margin-bottom: 20px;
}

.section-title {
  font-size: 24px;
  line-height: 1.32;
  color: #1f2726;
}

.next-entry {
  padding: 48px 0 0;
}

.next-entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.next-entry-card {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.next-entry-title {
  font-size: 17px;
  line-height: 1.5;
  color: #1f2726;
}

.next-entry-text {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

.next-entry-card .text-link {
  margin-top: auto;
  padding-top: 12px;
  align-self: flex-start;
}

.further-reading {
  padding: 48px 0 0;
}

.further-reading .section-title {
  margin-bottom: 18px;
}

/* ---------- 机构说明页 ---------- */

.page-hero-figure {
  margin-top: 22px;
}

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

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

.section-alt {
  position: relative;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 22px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

.col-card {
  min-width: 0;
  padding: 22px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.col-card h3 {
  font-size: 17px;
  line-height: 1.5;
  color: #1f2726;
}

.col-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: #3c4744;
}

.field-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #eef1ed;
}

.field-list li {
  font-size: 14px;
  line-height: 1.7;
  color: #5b6663;
}

.principle-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.principle-item {
  display: flex;
  gap: 12px;
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.principle-num {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
  line-height: 1.7;
}

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

.principle-body h3 {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.principle-body p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

.exclusion-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid #d9ded9;
}

.exclusion-item {
  padding: 16px 0;
  border-bottom: 1px solid #e6eae5;
}

.exclusion-item h3 {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.exclusion-item p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.8;
  color: #3c4744;
}

.exclusion-item p a {
  color: #2f5d55;
  font-weight: 600;
  border-bottom: 1px solid #c6cfca;
}

.exclusion-item p a:hover {
  color: #9a7352;
  border-bottom-color: #9a7352;
}

.note-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.note-item {
  padding: 20px;
  border: 1px solid #d9ded9;
  border-radius: 8px;
  background-color: #ffffff;
}

.note-item h3 {
  font-size: 16px;
  line-height: 1.5;
  color: #1f2726;
}

.note-item p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: #5b6663;
}

/* ---------- 404 ---------- */

.site-error .error-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 24px 0;
}

.error-block {
  max-width: 640px;
}

.error-code {
  font-size: 13px;
  font-weight: 600;
  color: #9a7352;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.error-title {
  margin-top: 10px;
  font-size: 38px;
  line-height: 1.24;
  color: #1f2726;
}

.error-lead {
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.8;
  color: #3c4744;
}

.error-action {
  margin-top: 22px;
}

.error-button {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 600;
  color: #f7f7f3;
  background-color: #1f2726;
  border-radius: 6px;
  transition: background-color 0.18s ease;
}

.error-button:hover {
  color: #f7f7f3;
  background-color: #9a7352;
}

.error-guide {
  max-width: 1120px;
  margin: 0 auto;
  padding: 44px 24px 0;
}

.error-guide-title {
  font-size: 20px;
  line-height: 1.4;
  color: #1f2726;
  margin-bottom: 14px;
}

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

.error-link-item a {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 0 16px;
  font-size: 15px;
  color: #3c4744;
  background-color: #ffffff;
  border: 1px solid #d9ded9;
  border-radius: 6px;
}

.error-link-item a:hover {
  color: #9a7352;
  border-color: #d9c3a8;
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero-wide,
  .hero-index,
  .content-media-primary {
    grid-column: 1;
  }

  .hero-wide h1 {
    font-size: 38px;
  }

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

  .capability-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 12px 16px;
  }

  .capability-meta {
    grid-column: 2;
  }

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

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

  .page-hero-grid,
  .page-hero-inner,
  .page-head-inner,
  .field-guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .service-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

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

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

  .page-title {
    font-size: 34px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 0 16px;
    min-height: 60px;
    gap: 12px;
  }

  .brand-logo {
    font-size: 17px;
  }

  .nav-toggle {
    display: flex;
    flex: 0 0 auto;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    flex: none;
    padding: 8px 16px 16px;
    background-color: #f7f7f3;
    border-bottom: 1px solid #d9ded9;
    box-shadow: 0 8px 20px rgba(31, 39, 38, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

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

  .nav-item {
    display: block;
    border-top: 1px solid #e6eae5;
  }

  .nav-item:first-child {
    border-top: 0;
  }

  .nav-item > a {
    display: flex;
    width: 100%;
    min-height: 46px;
    padding: 0 4px;
    font-size: 15px;
    border-bottom: 0;
  }

  .nav-item > a:hover,
  .nav-item.is-current > a,
  .nav-item > a.is-current {
    border-bottom: 0;
  }

  .inner-main {
    padding: 0 16px 56px;
  }

  .container,
  .section-inner {
    padding: 0 16px;
  }

  .breadcrumb {
    padding-top: 16px;
    font-size: 12px;
  }

  .page-header {
    padding-top: 14px;
  }

  .page-title {
    font-size: 28px;
    line-height: 1.28;
  }

  .section {
    padding-top: 40px;
  }

  .section-head {
    margin-bottom: 20px;
  }

  .section-head h2,
  .section-heading h2,
  .section-title {
    font-size: 21px;
  }

  .hero {
    padding: 24px 16px 0;
    gap: 20px;
  }

  .hero-wide h1 {
    font-size: 32px;
    line-height: 1.24;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-actions {
    gap: 4px 20px;
  }

  .intro-principles,
  .capability-preview,
  .method-preview,
  .delivery-preview,
  .start-preview,
  .faq-preview,
  .boundary-band {
    padding: 40px 16px 0;
  }

  .intro-block h2,
  .boundary-main h2 {
    font-size: 21px;
  }

  .capability-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 16px 0;
  }

  .capability-no {
    font-size: 13px;
  }

  .capability-meta {
    grid-column: 1;
    gap: 6px;
    margin-top: 2px;
  }

  .start-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 14px 0;
  }

  .start-no {
    font-size: 13px;
  }

  .table-wrap {
    overflow-x: visible;
  }

  .data-table,
  .stage-table {
    min-width: 0;
  }

  .data-table thead,
  .stage-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .data-table tbody tr,
  .stage-table tbody tr {
    display: block;
    padding: 12px 14px;
    border-bottom: 1px solid #e6eae5;
  }

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

  .data-table tbody th,
  .data-table tbody td,
  .stage-table tbody th,
  .stage-table tbody td {
    display: block;
    padding: 4px 0;
    border-bottom: 0;
    white-space: normal;
  }

  .data-table tbody th,
  .stage-table tbody th {
    background-color: transparent;
    font-size: 15px;
    color: #1f2726;
  }

  .data-table tbody td::before,
  .stage-table tbody td::before {
    content: attr(data-label);
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: #5b6663;
    margin-bottom: 2px;
  }

  .stage-path-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .stage-path-item {
    padding: 16px;
  }

  .pause-item {
    padding: 16px;
  }

  .deviation-fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .deviation-fields dt {
    margin-top: 6px;
    font-weight: 600;
  }

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

  .field-definition dt {
    padding: 12px 0 2px;
    border-bottom: 0;
  }

  .field-definition dd {
    padding: 0 0 12px;
  }

  .faq-item summary {
    padding: 14px 42px 14px 16px;
    font-size: 15px;
  }

  .faq-item p,
  .faq-answer p {
    padding: 12px 16px 16px;
    font-size: 14px;
  }

  .faq-section,
  .next-entry,
  .further-reading {
    padding-top: 36px;
  }

  .content-section {
    padding-top: 36px;
  }

  .next-entry-grid,
  .next-action-grid,
  .note-list,
  .principle-list,
  .reading-list,
  .related-list,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .delivery-catalog,
  .delivery-criteria,
  .principles-block,
  .boundary-links,
  .page-hero-aside,
  .page-hero-index,
  .page-head-aside,
  .field-guide-aside,
  .col-card,
  .note-item,
  .scope-panel {
    padding: 18px;
  }

  .step-item,
  .prep-item,
  .pause-item,
  .next-entry-card,
  .next-action-card {
    padding: 16px;
  }

  .footer-inner {
    padding: 36px 16px 20px;
  }

  .footer-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    margin-top: 24px;
    padding-top: 20px;
  }

  .footer-bottom {
    margin-top: 24px;
  }

  .site-footer {
    margin-top: 48px;
  }

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

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

  .error-guide {
    padding: 32px 16px 0;
  }

  .error-button {
    width: 100%;
    justify-content: center;
  }
}

/* 程序验收反馈：移动端防溢出 */
@media (max-width: 768px) {
  .site-main,
  .site-main * {
    min-width: 0;
    max-width: 100%;
  }

  .site-main :is(h1, h2, h3, h4, p, a, span) {
    overflow-wrap: anywhere;
  }
}