/* ==========================================================================
   黑料社 alinkx.com — 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 {
  margin: 0;
  padding: 0;
  background-color: #F5F2EA;
  color: #1D3F3A;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  font-weight: 700;
  color: #0F2E2A;
  line-height: 1.35;
  letter-spacing: 0;
}

p {
  margin: 0 0 1em;
}

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

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

a {
  color: #1D3F3A;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus-visible {
  color: #B4472A;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid #B4472A;
  outline-offset: 3px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: #6E6A5E;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  cursor: pointer;
}

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

strong {
  font-weight: 700;
  color: #0F2E2A;
}

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

/* ==========================================================================
   layout — 全站骨架
   ========================================================================== */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: #F5F2EA;
}

/* 页头 ---------------------------------------------------------------- */

.site-header {
  position: relative;
  z-index: 40;
  background-color: #0F2E2A;
  color: #F5F2EA;
  border-bottom: 1px solid #1D3F3A;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 32px;
}

.brand {
  display: flex;
  flex-direction: column;
  flex: 0 0 auto;
  gap: 2px;
  color: #F5F2EA;
}

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

.brand-name {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  font-size: 21px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: #D9D2C2;
}

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

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 4px;
}

.nav-link {
  display: inline-block;
  padding: 8px 10px;
  font-size: 15px;
  line-height: 1.4;
  color: #D9D2C2;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #FFFFFF;
  border-bottom-color: #6E6A5E;
}

.nav-link.is-current {
  color: #FFFFFF;
  border-bottom-color: #B4472A;
}

/* 通知中心入口 -------------------------------------------------------- */

.notice-center {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 6px 12px;
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: #0F2E2A;
  background-color: #D9D2C2;
  border-radius: 4px;
  white-space: nowrap;
}

.notice-center:hover,
.notice-center:focus-visible {
  color: #0F2E2A;
  background-color: #F5F2EA;
}

.notice-icon {
  display: inline-block;
  width: 14px;
  height: 14px;
  background-color: #B4472A;
  border-radius: 50%;
  flex: 0 0 auto;
}

.notice-label {
  font-size: 13px;
}

/* 汉堡按钮 ------------------------------------------------------------ */

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: transparent;
  border: 1px solid #6E6A5E;
  border-radius: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #F5F2EA;
}

/* 移动抽屉 ------------------------------------------------------------ */

.mobile-drawer {
  background-color: #1D3F3A;
  border-top: 1px solid #6E6A5E;
}

.mobile-drawer[hidden] {
  display: none;
}

.drawer-notice {
  padding: 14px 20px 10px;
}

.notice-center--block {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 10px 14px;
}

.drawer-nav {
  padding: 0 12px 16px;
}

.drawer-list {
  display: flex;
  flex-direction: column;
}

.drawer-link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 12px;
  font-size: 16px;
  color: #D9D2C2;
  border-bottom: 1px solid #2b4a44;
}

.drawer-link:hover,
.drawer-link:focus-visible {
  color: #FFFFFF;
  background-color: #0F2E2A;
}

.drawer-link.is-current {
  color: #FFFFFF;
  border-left: 3px solid #B4472A;
  padding-left: 9px;
}

/* 主内容 -------------------------------------------------------------- */

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

.inner-main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px 72px;
}

/* 面包屑 -------------------------------------------------------------- */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 22px 0 0;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: #6E6A5E;
}

.breadcrumb a {
  color: #6E6A5E;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: #B4472A;
}

.breadcrumb-sep {
  color: #D9D2C2;
}

.breadcrumb-current {
  color: #1D3F3A;
}

/* 内页标题区 ---------------------------------------------------------- */

.page-header {
  padding: 18px 0 4px;
}

.page-title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.3;
  color: #0F2E2A;
}

/* 页脚 ---------------------------------------------------------------- */

.site-footer {
  background-color: #0F2E2A;
  color: #D9D2C2;
  margin-top: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 32px 32px;
}

.footer-col-title {
  margin: 0 0 14px;
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: #F5F2EA;
}

.footer-brand-desc {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: #D9D2C2;
}

.footer-boundary {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: #6E6A5E;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-links a {
  display: inline-block;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.6;
  color: #D9D2C2;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #FFFFFF;
}

.footer-toggle {
  display: none;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 32px 28px;
  border-top: 1px solid #1D3F3A;
  font-size: 13px;
  line-height: 1.7;
  color: #6E6A5E;
}

.footer-bottom p {
  margin: 0 0 6px;
}

.footer-copy {
  color: #6E6A5E;
}

/* 通用容器 ------------------------------------------------------------ */

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

.page-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0;
}

/* ==========================================================================
   components — 通用组件
   ========================================================================== */

/* 按钮 ---------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 26px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 26px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: #F5F2EA;
  background-color: #B4472A;
  border: 1px solid #B4472A;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #FFFFFF;
  background-color: #93381f;
  border-color: #93381f;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 26px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: #F5F2EA;
  background-color: transparent;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: #0F2E2A;
  background-color: #F5F2EA;
  border-color: #F5F2EA;
}

/* 文字链接 ------------------------------------------------------------ */

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: #B4472A;
  border-bottom: 1px solid transparent;
}

.text-link::after {
  content: "→";
  font-size: 14px;
}

.text-link:hover,
.text-link:focus-visible {
  color: #93381f;
  border-bottom-color: #B4472A;
}

/* 区块标题 ------------------------------------------------------------ */

.section-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  color: #0F2E2A;
  margin: 0 0 10px;
}

.section-desc {
  max-width: 62ch;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.85;
  color: #6E6A5E;
}

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

.section-head .section-title {
  margin-bottom: 8px;
}

.section-head .section-desc {
  margin-bottom: 0;
}

.section-note {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #6E6A5E;
}

/* 媒体图 -------------------------------------------------------------- */

.media-figure {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  background-color: #D9D2C2;
}

.media-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame {
  overflow: hidden;
  border-radius: 6px;
  background-color: #D9D2C2;
}

.media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 边界提示条 ---------------------------------------------------------- */

.boundary-bar {
  margin: 0;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: #7a2f1a;
  background-color: #f7ece7;
  border-left: 4px solid #B4472A;
  border-radius: 0 4px 4px 0;
}

.boundary-note {
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: #7a2f1a;
  background-color: #f7ece7;
  border-left: 4px solid #B4472A;
  border-radius: 0 4px 4px 0;
}

.boundary-note p {
  margin: 0 0 8px;
}

.boundary-note p:last-child {
  margin-bottom: 0;
}

.boundary-note ul {
  margin: 0;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.boundary-item {
  font-size: 14px;
  line-height: 1.75;
  color: #7a2f1a;
}

.boundary-alert {
  padding: 22px 24px;
  background-color: #f7ece7;
  border-left: 4px solid #B4472A;
  border-radius: 0 6px 6px 0;
}

.boundary-alert .boundary-list {
  margin-top: 12px;
}

.boundary-title {
  font-size: 20px;
  color: #7a2f1a;
  margin: 0 0 8px;
}

.boundary-intro {
  font-size: 15px;
  line-height: 1.8;
  color: #7a2f1a;
  margin: 0 0 4px;
}

.boundary-foot {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

/* 表格容器 ------------------------------------------------------------ */

.table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
  background-color: #FFFFFF;
}

.table-caption {
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.6;
  text-align: left;
  color: #6E6A5E;
  caption-side: top;
}

.data-table,
.catalog-table,
.compare-table,
.mapping-table,
.delivery-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.7;
}

.data-table thead th,
.catalog-table thead th,
.compare-table thead th,
.mapping-table thead th,
.delivery-table thead th {
  padding: 12px 16px;
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  font-size: 15px;
  font-weight: 700;
  text-align: left;
  color: #F5F2EA;
  background-color: #1D3F3A;
  border-bottom: 2px solid #0F2E2A;
  white-space: nowrap;
}

.data-table tbody td,
.catalog-table tbody td,
.compare-table tbody td,
.mapping-table tbody td,
.delivery-table tbody td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  color: #1D3F3A;
  border-bottom: 1px solid #D9D2C2;
}

.data-table tbody tr:last-child td,
.catalog-table tbody tr:last-child td,
.compare-table tbody tr:last-child td,
.mapping-table tbody tr:last-child td,
.delivery-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:nth-child(even),
.catalog-table tbody tr:nth-child(even),
.compare-table tbody tr:nth-child(even),
.mapping-table tbody tr:nth-child(even),
.delivery-table tbody tr:nth-child(even) {
  background-color: #faf8f3;
}

.table-hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: #6E6A5E;
}

.scroll-hint {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.6;
  color: #6E6A5E;
}

/* 编号与等宽数字 ------------------------------------------------------ */

.plan-code,
.plan-no,
.dimension-no,
.scenario-code,
.scenario-no,
.step-index,
.stage-num,
.handover-index,
.faq-map-num,
.group-index,
.cell-no,
.cell-code {
  font-family: "SFMono-Regular", "Menlo", "Consolas", "Liberation Mono", monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* 标签 ---------------------------------------------------------------- */

.label-tag,
.output-label,
.output-tag,
.stage-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: #6E6A5E;
  background-color: #EFEAE0;
  border-radius: 3px;
}

/* 常见疑问折叠 -------------------------------------------------------- */

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

.faq-item {
  border: 1px solid #D9D2C2;
  border-radius: 6px;
  background-color: #FFFFFF;
  overflow: hidden;
}

.faq-item[open] {
  border-color: #1D3F3A;
}

.faq-question,
.faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 14px 48px 14px 18px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: #0F2E2A;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after,
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: #B4472A;
}

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

.faq-answer {
  padding: 14px 18px 16px;
  font-size: 15px;
  line-height: 1.85;
  color: #1D3F3A;
  border-top: 1px solid #EFEAE0;
}

.faq-answer p {
  margin: 0 0 10px;
}

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

.faq-answer a {
  color: #B4472A;
  border-bottom: 1px solid #B4472A;
}

/* 延伸阅读 / 相关内容 ------------------------------------------------- */

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 26px 32px;
  border-top: 1px solid #D9D2C2;
}

.related-links-label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #6E6A5E;
}

.related-links-item {
  font-size: 14px;
  line-height: 1.6;
  color: #1D3F3A;
  border-bottom: 1px solid #D9D2C2;
}

.related-links-item:hover,
.related-links-item:focus-visible {
  color: #B4472A;
  border-bottom-color: #B4472A;
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-list li a,
.related-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.6;
  color: #1D3F3A;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.related-list li a:hover,
.related-list li a:focus-visible,
.related-link:hover,
.related-link:focus-visible {
  color: #B4472A;
  border-color: #B4472A;
  transform: translateY(-1px);
}

.reading-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.reading-item a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.6;
  color: #1D3F3A;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
  background-color: #FFFFFF;
}

.reading-item a:hover,
.reading-item a:focus-visible {
  color: #B4472A;
  border-color: #B4472A;
}

/* 页内通用 section 间距 ---------------------------------------------- */

.section {
  padding: 40px 0;
}

.section + .section {
  padding-top: 0;
}

/* ==========================================================================
   pages — 首页
   ========================================================================== */

/* 首屏 ---------------------------------------------------------------- */

.hero {
  position: relative;
  width: 100%;
  min-height: 520px;
  overflow: hidden;
  background-color: #1D3F3A;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 520px;
  background-color: rgba(15, 46, 42, 0.72);
}

.hero-content {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px;
  color: #F5F2EA;
}

.hero-eyebrow {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: #D9D2C2;
}

.hero-content h1 {
  max-width: 20ch;
  margin: 0 0 18px;
  font-size: 42px;
  font-weight: 700;
  line-height: 1.28;
  color: #FFFFFF;
}

.hero-lead {
  max-width: 46ch;
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.85;
  color: #EFEAE0;
}

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

/* 快速入口 ------------------------------------------------------------ */

.quick-entry {
  max-width: 1160px;
  margin: 0 auto;
  padding: 48px 32px 0;
}

.quick-entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 120px;
  padding: 18px 18px 20px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #D9D2C2;
  border-radius: 6px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.entry-card:hover,
.entry-card:focus-visible {
  border-left-color: #B4472A;
  transform: translateY(-2px);
}

.entry-title {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: #0F2E2A;
}

.entry-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

/* 方案总览（左文右列表） ---------------------------------------------- */

.overview {
  display: grid;
  grid-template-columns: 44% 52%;
  gap: 4%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px 0;
}

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

.overview-intro p {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: #1D3F3A;
}

.overview-intro .text-link {
  margin-top: 8px;
}

.overview-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.plan-item {
  padding: 18px 20px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #D9D2C2;
  border-radius: 6px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.plan-item:hover {
  border-left-color: #B4472A;
  transform: translateY(-2px);
}

.plan-item .plan-code {
  display: inline-block;
  margin-bottom: 4px;
  font-size: 13px;
  color: #B4472A;
}

.plan-name {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: #0F2E2A;
}

.plan-scope {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.75;
  color: #1D3F3A;
}

.plan-boundary {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

/* 比较维度速览 -------------------------------------------------------- */

.dimensions {
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px 0;
}

.dimensions .section-desc {
  margin-bottom: 24px;
}

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

.dimension-card {
  min-width: 0;
  padding: 20px 18px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-top: 3px solid #1D3F3A;
  border-radius: 0 0 6px 6px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.dimension-card:hover {
  border-top-color: #B4472A;
  transform: translateY(-2px);
}

.dimension-name {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: #0F2E2A;
}

.dimension-standard {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: #1D3F3A;
}

.dimension-tradeoff {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.dimensions .text-link {
  margin-top: 20px;
}

/* 适用场景索引（左图右列表） ------------------------------------------ */

.scenarios {
  display: grid;
  grid-template-columns: 44% 52%;
  gap: 4%;
  align-items: start;
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px 0;
}

.scenarios-media {
  min-width: 0;
}

.scenarios-media .media-figure {
  aspect-ratio: 4 / 5;
}

.scenarios-list-wrap {
  min-width: 0;
}

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.scenario-item {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.6fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #D9D2C2;
}

.scenario-item:first-child {
  border-top: 1px solid #D9D2C2;
}

.scenario-name {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: #0F2E2A;
}

.scenario-signal {
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.scenario-code {
  font-size: 13px;
  color: #B4472A;
  white-space: nowrap;
}

.scenarios-list-wrap .text-link {
  margin-top: 18px;
}

/* 协作流程五阶段 ------------------------------------------------------ */

.process {
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px 0;
}

.process .section-desc {
  margin-bottom: 24px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.process-step {
  position: relative;
  min-width: 0;
  padding: 18px 16px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.process-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background-color: #1D3F3A;
  border-radius: 6px 6px 0 0;
}

.process-step .step-index {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  color: #B4472A;
}

.process-step .step-name {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.process-step .step-output {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.process .text-link {
  margin-top: 20px;
}

/* 交付与资料摘要（左分组右图） ---------------------------------------- */

.delivery-summary {
  display: grid;
  grid-template-columns: 52% 44%;
  gap: 4%;
  align-items: start;
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px 0;
}

.delivery-groups {
  min-width: 0;
}

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

.delivery-item {
  padding: 16px 18px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.delivery-group-name {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.delivery-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #6E6A5E;
}

.delivery-groups .text-link {
  margin-top: 18px;
}

.delivery-media {
  min-width: 0;
}

.delivery-media .media-figure {
  aspect-ratio: 4 / 5;
}

/* 常见疑问摘要 -------------------------------------------------------- */

.faq-summary {
  max-width: 1160px;
  margin: 0 auto;
  padding: 64px 32px 0;
}

.faq-summary .section-desc {
  margin-bottom: 22px;
}

.faq-summary .text-link {
  margin-top: 18px;
}

/* 结尾引导 ------------------------------------------------------------ */

.closing {
  max-width: 1160px;
  margin: 64px auto 0;
  padding: 0 32px;
}

.closing-inner {
  padding: 40px 36px;
  background-color: #1D3F3A;
  border-radius: 8px;
  color: #F5F2EA;
}

.closing-inner .section-title {
  color: #FFFFFF;
  margin-bottom: 12px;
}

.closing-inner p {
  max-width: 62ch;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: #D9D2C2;
}

/* ==========================================================================
   pages — 方案目录
   ========================================================================== */

.page-hero {
  padding: 8px 0 0;
}

.page-hero-inner {
  padding: 0 0 4px;
}

.page-eyebrow {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: #B4472A;
}

.page-lead {
  max-width: 66ch;
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.85;
  color: #1D3F3A;
}

.content-shell {
  padding-top: 34px;
}

.section-block {
  padding: 34px 0;
  border-top: 1px solid #D9D2C2;
}

.section-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.catalog-table .cell-code {
  font-size: 13px;
  color: #B4472A;
  white-space: nowrap;
}

.catalog-table .cell-name {
  font-weight: 700;
  color: #0F2E2A;
  white-space: nowrap;
}

.plan-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.plan-cover {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.75;
  color: #1D3F3A;
}

.plan-exclude {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.group-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.group-panel {
  min-width: 0;
  padding: 22px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.group-panel .group-title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.group-desc {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: #6E6A5E;
}

.group-boundary {
  margin: 14px 0 0;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.7;
  color: #7a2f1a;
  background-color: #f7ece7;
  border-left: 3px solid #B4472A;
  border-radius: 0 4px 4px 0;
}

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

.material-item {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: 16px;
  padding: 14px 16px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.material-name {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: #0F2E2A;
}

.material-use {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #6E6A5E;
}

.entry-block {
  padding: 34px 0;
  border-top: 1px solid #D9D2C2;
}

.entry-inner {
  padding: 28px 28px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #B4472A;
  border-radius: 6px;
}

.entry-inner h2 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.4;
  color: #0F2E2A;
}

.entry-inner p {
  max-width: 62ch;
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: #6E6A5E;
}

.related-block {
  padding: 34px 0 0;
  border-top: 1px solid #D9D2C2;
}

.related-block h2 {
  margin: 0 0 16px;
  font-size: 22px;
  line-height: 1.4;
  color: #0F2E2A;
}

/* ==========================================================================
   pages — 比较维度
   ========================================================================== */

.page-kicker {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: #B4472A;
}

.section-dimensions .dimension-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-top: 3px solid #1D3F3A;
  border-radius: 0 0 6px 6px;
}

.section-dimensions .dimension-no {
  margin: 0;
  font-size: 13px;
  color: #B4472A;
}

.section-dimensions .dimension-name {
  margin: 0;
  font-size: 19px;
}

.section-dimensions .dimension-criteria {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #1D3F3A;
}

.section-dimensions .dimension-record {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.section-dimensions .label-tag {
  flex: 0 0 auto;
}

.compare-table .plan-no {
  font-size: 13px;
  color: #B4472A;
  white-space: nowrap;
}

.tradeoff-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tradeoff-item {
  padding: 18px 20px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #D9D2C2;
  border-radius: 6px;
}

.tradeoff-item:hover {
  border-left-color: #B4472A;
}

.tradeoff-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.tradeoff-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #1D3F3A;
}

.media-split {
  display: grid;
  grid-template-columns: 44% 52%;
  gap: 4%;
  align-items: start;
}

.media-split .media-figure {
  aspect-ratio: 4 / 5;
}

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

.media-body p {
  font-size: 16px;
  line-height: 1.85;
  color: #1D3F3A;
}

.next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.next-links li a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  line-height: 1.6;
  color: #1D3F3A;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
}

.next-links li a:hover,
.next-links li a:focus-visible {
  color: #B4472A;
  border-color: #B4472A;
}

.section-related .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.section-related .related-item a {
  height: 100%;
}

/* ==========================================================================
   pages — 适用场景
   ========================================================================== */

.scenario-section .scenario-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.scenario-section .scenario-item {
  display: block;
  padding: 0;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
  background-color: #FFFFFF;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.scenario-section .scenario-item:hover {
  border-color: #B4472A;
}

.scenario-head {
  display: grid;
  grid-template-columns: auto minmax(0, 34%) minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
  padding: 18px 22px;
  background-color: #faf8f3;
  border-bottom: 1px solid #D9D2C2;
}

.scenario-no {
  font-size: 13px;
  color: #B4472A;
}

.scenario-head .scenario-name {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.scenario-head .scenario-signal {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.scenario-body {
  display: grid;
  grid-template-columns: 34% 62%;
  gap: 4%;
  padding: 20px 22px 22px;
}

.scenario-media {
  min-width: 0;
  margin: 0;
}

.scenario-media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  background-color: #D9D2C2;
}

.scenario-media figcaption {
  margin-top: 8px;
}

.scenario-detail {
  min-width: 0;
}

.scenario-text {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: #1D3F3A;
}

.scenario-meta {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: #6E6A5E;
}

.scenario-plan-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  font-size: 14px;
  font-weight: 600;
  color: #B4472A;
}

.scenario-plan-link:hover,
.scenario-plan-link:focus-visible {
  color: #93381f;
  text-decoration: underline;
}

.mapping-table .cell-no {
  color: #B4472A;
  white-space: nowrap;
}

.boundary-section .boundary-alert {
  margin-top: 4px;
}

.related-section .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

/* ==========================================================================
   pages — 选择指南
   ========================================================================== */

.page-title-block {
  padding: 8px 0 4px;
}

.guide-steps,
.guide-prep,
.guide-pitfalls,
.guide-next {
  padding: 40px 0 0;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.step-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 24px;
  padding: 24px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.step-marker {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 20px;
  border-right: 1px solid #D9D2C2;
}

.step-marker .step-index {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: #B4472A;
}

.step-marker .step-name {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

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

.step-media {
  min-width: 0;
  margin: 0 0 16px;
  overflow: hidden;
  border-radius: 4px;
  background-color: #D9D2C2;
}

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

.step-media figcaption {
  margin-top: 8px;
}

.step-body .step-goal {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: #0F2E2A;
}

.step-body > p {
  font-size: 15px;
  line-height: 1.85;
  color: #1D3F3A;
}

.step-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 12px;
}

.step-points li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: #1D3F3A;
}

.step-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background-color: #B4472A;
  border-radius: 50%;
}

.step-body .step-output {
  margin: 0;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: #1D3F3A;
  background-color: #faf8f3;
  border-left: 3px solid #1D3F3A;
  border-radius: 0 4px 4px 0;
}

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

.pitfall-item {
  padding: 18px 20px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #B4472A;
  border-radius: 6px;
}

.pitfall-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.pitfall-desc {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.8;
  color: #1D3F3A;
}

.pitfall-fix {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #6E6A5E;
}

.pitfall-fix .output-label {
  flex: 0 0 auto;
}

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

.next-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.next-card-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.next-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #6E6A5E;
}

.next-card .text-link {
  margin-top: auto;
}

.related-reading {
  padding: 40px 0 0;
}

/* ==========================================================================
   pages — 交付与资料
   ========================================================================== */

.delivery-groups h2.section-title {
  margin-bottom: 8px;
}

.delivery-groups > .section-desc {
  margin-bottom: 24px;
}

.delivery-group {
  padding: 22px 0 0;
  border-top: 1px solid #D9D2C2;
}

.delivery-group:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.delivery-group .group-title {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.delivery-group .group-desc {
  margin: 0 0 14px;
  max-width: 62ch;
}

.delivery-table {
  min-width: 100%;
}

.version-rules {
  display: grid;
  grid-template-columns: 52% 44%;
  gap: 4%;
  align-items: start;
  padding: 44px 0 0;
  border-top: 1px solid #D9D2C2;
  margin-top: 40px;
}

.version-text {
  min-width: 0;
}

.rule-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rule-item {
  display: grid;
  grid-template-columns: minmax(0, 130px) minmax(0, 1fr);
  gap: 12px;
  padding: 12px 14px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
  font-size: 15px;
  line-height: 1.75;
  color: #1D3F3A;
}

.rule-label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #B4472A;
}

.version-figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  background-color: #D9D2C2;
}

.version-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.handover {
  padding: 44px 0 0;
  border-top: 1px solid #D9D2C2;
  margin-top: 40px;
}

.handover-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.handover-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
}

.handover-index {
  font-size: 13px;
  color: #B4472A;
}

.handover-text {
  font-size: 15px;
  line-height: 1.8;
  color: #1D3F3A;
}

.usage-scope {
  padding: 44px 0 0;
  border-top: 1px solid #D9D2C2;
  margin-top: 40px;
}

.further-reading {
  padding: 44px 0 0;
  border-top: 1px solid #D9D2C2;
  margin-top: 40px;
}

/* ==========================================================================
   pages — 协作流程
   ========================================================================== */

.stages-section {
  padding-top: 34px;
}

.stage-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.stage-item {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid #D9D2C2;
}

.stage-item:first-child {
  border-top: 1px solid #D9D2C2;
}

.stage-index {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 20px;
  border-right: 1px solid #D9D2C2;
}

.stage-num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: #B4472A;
}

.stage-label {
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: #6E6A5E;
}

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

.stage-title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.stage-text {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: #1D3F3A;
}

.stage-output {
  display: inline-block;
  margin: 0;
  padding: 8px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: #1D3F3A;
  background-color: #faf8f3;
  border-left: 3px solid #1D3F3A;
  border-radius: 0 4px 4px 0;
}

.stage-media-section {
  padding-top: 34px;
}

.stage-figure {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  background-color: #D9D2C2;
}

.stage-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.requirement-section,
.division-section,
.boundary-section {
  padding-top: 40px;
}

.requirement-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.requirement-item {
  padding: 16px 18px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #D9D2C2;
  border-radius: 6px;
}

.requirement-item:hover {
  border-left-color: #B4472A;
}

.requirement-name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.requirement-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #6E6A5E;
}

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

.division-col {
  min-width: 0;
  padding: 22px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 6px;
}

.division-title {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: #0F2E2A;
}

.division-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.division-item {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: #1D3F3A;
}

.division-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background-color: #1D3F3A;
  border-radius: 50%;
}

.division-note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: #6E6A5E;
}

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

/* ==========================================================================
   pages — 常见疑问
   ========================================================================== */

.faq-map {
  display: grid;
  grid-template-columns: 34% 62%;
  gap: 4%;
  align-items: start;
  padding: 26px 0 8px;
}

.faq-map-media {
  min-width: 0;
}

.faq-map-media .media-frame {
  aspect-ratio: 4 / 5;
}

.faq-map-list {
  min-width: 0;
}

.faq-map-list h2 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.4;
  color: #0F2E2A;
}

.faq-map-items {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.faq-map-items a {
  display: grid;
  grid-template-columns: auto minmax(0, 150px) minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  min-height: 44px;
  padding: 12px 14px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.faq-map-items a:hover,
.faq-map-items a:focus-visible {
  border-color: #B4472A;
  transform: translateY(-1px);
}

.faq-map-num {
  font-size: 13px;
  color: #B4472A;
}

.faq-map-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  color: #0F2E2A;
}

.faq-map-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #6E6A5E;
}

.faq-group {
  padding: 40px 0 0;
}

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

.group-index {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: #B4472A;
}

.faq-group-head h2 {
  margin: 0 0 8px;
  font-size: 24px;
  line-height: 1.4;
  color: #0F2E2A;
}

.faq-group-head .section-desc {
  margin: 0;
}

.faq-outro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  margin-top: 40px;
  padding: 26px 28px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-left: 3px solid #B4472A;
  border-radius: 6px;
}

.faq-outro-text h2 {
  margin: 0 0 8px;
  font-size: 22px;
  line-height: 1.4;
  color: #0F2E2A;
}

.faq-outro-text p {
  max-width: 62ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: #6E6A5E;
}

.faq-outro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.further-reading h2 {
  margin: 0 0 16px;
  font-size: 22px;
  line-height: 1.4;
  color: #0F2E2A;
}

.further-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ==========================================================================
   pages — 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 32px;
}

.error-inner {
  width: 100%;
  max-width: 640px;
  padding: 40px 36px;
  background-color: #FFFFFF;
  border: 1px solid #D9D2C2;
  border-radius: 8px;
}

.error-code {
  margin: 0 0 8px;
  font-family: "SFMono-Regular", "Menlo", "Consolas", monospace;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.2;
  color: #B4472A;
}

.error-title {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.35;
  color: #0F2E2A;
}

.error-text {
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.85;
  color: #6E6A5E;
}

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

.error-actions .btn-ghost {
  color: #0F2E2A;
  border-color: #1D3F3A;
}

.error-actions .btn-ghost:hover,
.error-actions .btn-ghost:focus-visible {
  color: #F5F2EA;
  background-color: #1D3F3A;
  border-color: #1D3F3A;
}

.error-links {
  padding-top: 22px;
  border-top: 1px solid #D9D2C2;
}

.error-links-title {
  margin: 0 0 12px;
  font-size: 17px;
  line-height: 1.45;
  color: #0F2E2A;
}

.error-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.error-link-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 14px;
  line-height: 1.6;
  color: #1D3F3A;
  border: 1px solid #D9D2C2;
  border-radius: 4px;
}

.error-link-list a:hover,
.error-link-list a:focus-visible {
  color: #B4472A;
  border-color: #B4472A;
}

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

@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
    padding: 12px 24px;
  }

  .nav-link {
    padding: 8px 7px;
    font-size: 14px;
  }

  .brand-name {
    font-size: 19px;
  }

  .inner-main,
  .quick-entry,
  .overview,
  .dimensions,
  .scenarios,
  .process,
  .delivery-summary,
  .faq-summary,
  .closing {
    padding-left: 24px;
    padding-right: 24px;
  }

  .overview,
  .scenarios,
  .delivery-summary {
    grid-template-columns: 46% 50%;
    gap: 4%;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 40px 24px 28px;
  }

  .footer-bottom {
    padding: 16px 24px 24px;
  }

  .related-links {
    padding: 22px 24px;
  }

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

  .step-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 20px;
  }

  .stage-item {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 20px;
  }

  .version-rules {
    grid-template-columns: 52% 44%;
    gap: 4%;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  /* 页头：汉堡 + 抽屉 */
  .header-inner {
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 18px;
  }

  .brand {
    min-width: 0;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-tagline {
    font-size: 11px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

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

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #0F2E2A;
    border-top: 1px solid #1D3F3A;
    padding: 8px 18px;
    box-shadow: 0 8px 18px rgba(15, 46, 42, 0.28);
  }

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0 12px;
    font-size: 16px;
    border-bottom: 1px solid #1D3F3A;
    border-left: 3px solid transparent;
  }

  .nav-link.is-current {
    border-bottom-color: #1D3F3A;
    border-left-color: #B4472A;
  }

  .header-inner > .notice-center {
    display: none;
  }

  /* 内页骨架 */
  .inner-main {
    padding: 0 18px 56px;
  }

  .breadcrumb {
    padding-top: 16px;
    font-size: 13px;
  }

  .page-header {
    padding: 12px 0 2px;
  }

  .page-title {
    font-size: 27px;
    line-height: 1.35;
  }

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

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

  .section-desc {
    font-size: 15px;
    margin-bottom: 20px;
  }

  .section,
  .section-block {
    padding: 28px 0;
  }

  .section + .section {
    padding-top: 0;
  }

  /* 首页 */
  .hero {
    min-height: 0;
  }

  .hero-overlay {
    min-height: 0;
    align-items: flex-start;
  }

  .hero-content {
    padding: 32px 18px 36px;
  }

  .hero-content h1 {
    max-width: none;
    font-size: 27px;
    line-height: 1.35;
  }

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

  .hero-actions {
    gap: 10px;
  }

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

  .quick-entry,
  .overview,
  .dimensions,
  .scenarios,
  .process,
  .delivery-summary,
  .faq-summary,
  .closing {
    padding: 32px 18px 0;
  }

  .quick-entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .entry-card {
    min-height: 0;
    padding: 14px;
  }

  .overview,
  .scenarios,
  .delivery-summary {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .overview-intro p {
    max-width: none;
  }

  .scenarios-media {
    order: -1;
  }

  .scenarios-media .media-figure {
    aspect-ratio: 16 / 10;
  }

  .scenario-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 12px 0;
  }

  .scenario-code {
    justify-self: start;
  }

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

  .process-steps {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .delivery-media {
    order: -1;
  }

  .delivery-media .media-figure {
    aspect-ratio: 16 / 10;
  }

  .closing {
    margin-top: 36px;
  }

  .closing-inner {
    padding: 26px 20px;
  }

  .closing-inner .btn-primary {
    width: 100%;
  }

  .related-links {
    padding: 20px 18px;
    gap: 6px 14px;
  }

  /* 页脚折叠 */
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 28px 18px 12px;
  }

  .footer-col {
    padding: 0 0 14px;
    border-bottom: 1px solid #1D3F3A;
  }

  .footer-col:first-child {
    padding-bottom: 18px;
  }

  .footer-col:last-child {
    border-bottom: 0;
  }

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

  .footer-collapsible {
    padding: 0;
  }

  .footer-collapsible .footer-col-title {
    display: none;
  }

  .footer-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 48px;
    padding: 0;
    font-family: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.4;
    color: #F5F2EA;
    background-color: transparent;
    border: 0;
    text-align: left;
  }

  .footer-toggle::after {
    content: "+";
    font-size: 20px;
    font-weight: 400;
    color: #D9D2C2;
  }

  .footer-toggle[aria-expanded="true"]::after {
    content: "−";
  }

  .footer-collapsible .footer-links {
    display: none;
    padding: 4px 0 12px;
  }

  .footer-collapsible .footer-links.is-open {
    display: flex;
  }

  .footer-bottom {
    padding: 14px 18px 22px;
    font-size: 12px;
  }

  /* 表格 */
  .table-scroll {
    border-radius: 4px;
  }

  .data-table,
  .catalog-table,
  .compare-table,
  .mapping-table,
  .delivery-table {
    min-width: 620px;
  }

  /* 方案目录 */
  .page-hero {
    padding-top: 4px;
  }

  .content-shell {
    padding-top: 24px;
  }

  .group-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .group-panel {
    padding: 18px;
  }

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

  .entry-inner {
    padding: 20px 18px;
  }

  .entry-inner .btn-primary {
    width: 100%;
  }

  /* 比较维度 */
  .media-split {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .media-split .media-figure {
    aspect-ratio: 16 / 10;
  }

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

  /* 适用场景 */
  .scenario-head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 6px 10px;
    padding: 14px 16px;
  }

  .scenario-head .scenario-signal {
    grid-column: 1 / -1;
  }

  .scenario-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    padding: 16px;
  }

  .scenario-media img {
    aspect-ratio: 16 / 10;
  }

  /* 选择指南 */
  .step-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .step-marker {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
    padding: 0 0 10px;
    border-right: 0;
    border-bottom: 1px solid #D9D2C2;
  }

  .step-marker .step-index {
    font-size: 22px;
  }

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

  /* 交付 */
  .delivery-group {
    padding-top: 20px;
  }

  .delivery-table {
    min-width: 560px;
  }

  .version-rules {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding-top: 32px;
    margin-top: 28px;
  }

  .version-figure {
    order: -1;
  }

  .version-figure img {
    aspect-ratio: 16 / 10;
  }

  .rule-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .handover,
  .usage-scope,
  .further-reading {
    padding-top: 32px;
    margin-top: 28px;
  }

  /* 协作流程 */
  .stage-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 18px 0;
  }

  .stage-index {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
    padding: 0 0 8px;
    border-right: 0;
    border-bottom: 1px solid #D9D2C2;
  }

  .stage-num {
    font-size: 22px;
  }

  .stage-figure img {
    aspect-ratio: 16 / 10;
  }

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

  .division-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .division-col {
    padding: 18px;
  }

  /* 常见疑问 */
  .faq-map {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding-top: 18px;
  }

  .faq-map-media .media-frame {
    aspect-ratio: 16 / 10;
  }

  .faq-map-items a {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 10px;
  }

  .faq-map-desc {
    grid-column: 1 / -1;
  }

  .faq-group {
    padding-top: 32px;
  }

  .faq-outro {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    padding: 20px 18px;
    margin-top: 32px;
  }

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

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

  /* 404 */
  .error-main {
    padding: 40px 18px;
  }

  .error-inner {
    padding: 26px 20px;
  }

  .error-title {
    font-size: 23px;
  }

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

@media (max-width: 480px) {
  .header-inner {
    padding: 10px 14px;
  }

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

  .inner-main,
  .quick-entry,
  .overview,
  .dimensions,
  .scenarios,
  .process,
  .delivery-summary,
  .faq-summary,
  .closing,
  .related-links {
    padding-left: 14px;
    padding-right: 14px;
  }

  .hero-content {
    padding: 26px 14px 30px;
  }

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

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

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

  .closing-inner {
    padding: 22px 16px;
  }

  .footer-inner {
    padding: 24px 14px 10px;
  }

  .footer-bottom {
    padding: 12px 14px 20px;
  }

  .step-item,
  .group-panel,
  .division-col,
  .entry-inner,
  .tradeoff-item,
  .pitfall-item {
    padding: 16px;
  }

  .data-table,
  .catalog-table,
  .compare-table,
  .mapping-table,
  .delivery-table {
    min-width: 540px;
    font-size: 14px;
  }

  .data-table thead th,
  .catalog-table thead th,
  .compare-table thead th,
  .mapping-table thead th,
  .delivery-table thead th,
  .data-table tbody td,
  .catalog-table tbody td,
  .compare-table tbody td,
  .mapping-table tbody td,
  .delivery-table tbody td {
    padding: 10px 12px;
  }
}

/* 动效增强：不改变初始可见性 */
@media (prefers-reduced-motion: no-preference) {
  .entry-card,
  .plan-item,
  .dimension-card,
  .tradeoff-item,
  .requirement-item,
  .related-list li a,
  .related-link,
  .faq-map-items a {
    will-change: transform;
  }
}

/* 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;
  }
}