:root {
  --c-bg: #f5f7fa;
  --c-surface: #ffffff;
  --c-line: #d5dbe3;
  --c-line-soft: #e6eaf0;
  --c-primary: #0b3a6f;
  --c-link: #0b5cd5;
  --c-warn: #d64309;
  --c-ok: #0a7d4f;
  --c-text: #101b2d;
  --c-muted: #55637a;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --container: 1180px;
  --radius: 6px;
  --gap: 24px;
  --sec-gap: 56px;
}

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

* {
  box-sizing: border-box;
}

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

body.site-body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--c-primary);
  font-weight: 700;
  line-height: 1.35;
}

p {
  margin: 0;
}

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

a {
  color: var(--c-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

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

.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;
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

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

.site-header {
  background: var(--c-surface);
  border-bottom: 2px solid var(--c-primary);
  position: sticky;
  top: 0;
  z-index: 40;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-primary);
  text-decoration: none;
  flex: 0 0 auto;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 30px;
  border-radius: 4px;
  background: var(--c-primary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-name {
  font-size: 19px;
  font-weight: 700;
  color: var(--c-primary);
}

.brand-sub {
  font-size: 12px;
  color: var(--c-muted);
  padding-left: 10px;
  border-left: 1px solid var(--c-line);
  line-height: 1.2;
}

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

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--c-text);
  border-radius: 4px;
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--c-link);
  background: var(--c-bg);
  text-decoration: none;
}

.nav-list a.is-current {
  color: #fff;
  background: var(--c-primary);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: var(--c-surface);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-primary);
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--c-line);
  background: var(--c-surface);
}

.mobile-nav-list {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 24px 16px;
}

.mobile-nav-list li {
  border-bottom: 1px solid var(--c-line-soft);
}

.mobile-nav-list a {
  display: block;
  padding: 12px 4px;
  min-height: 44px;
  font-size: 15px;
  color: var(--c-text);
}

.mobile-nav-list a.is-current {
  color: var(--c-link);
  font-weight: 700;
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px 24px 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-muted);
  margin-bottom: 16px;
}

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

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

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

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

.page-header {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--c-primary);
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-primary);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  border: 1px solid transparent;
  text-decoration: none;
}

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

.btn-primary {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.btn-primary:hover {
  background: var(--c-link);
  border-color: var(--c-link);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.btn-ghost:hover {
  background: var(--c-primary);
  color: #fff;
}

.btn-outline {
  background: var(--c-surface);
  color: var(--c-primary);
  border-color: var(--c-line);
}

.btn-outline:hover {
  border-color: var(--c-link);
  color: var(--c-link);
}

.section-head {
  margin-bottom: 24px;
  padding-left: 14px;
  border-left: 6px solid var(--c-primary);
}

.section-no,
.section-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--c-primary);
  padding: 2px 8px;
  border-radius: 3px;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.section-head h2,
.section-title {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-desc,
.section-lead,
.section-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
  max-width: 76ch;
}

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

.section-note {
  margin-bottom: 16px;
}

.sub-title {
  font-size: 17px;
  margin-bottom: 10px;
}

.link-inline {
  font-size: 14px;
  font-weight: 700;
}

/* 通用表格 */
.table-wrap,
.table-scroll {
  overflow-x: auto;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.spec-table,
.data-table {
  min-width: 560px;
  font-size: 14px;
}

.spec-table caption,
.data-table caption {
  text-align: left;
  padding: 12px 16px 0;
  font-size: 13px;
  color: var(--c-muted);
}

.spec-table thead th,
.data-table thead th {
  background: var(--c-bg);
  border-bottom: 2px solid var(--c-line);
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  color: var(--c-primary);
  white-space: nowrap;
}

.spec-table thead th.is-sorted-asc::after {
  content: " ↑";
  font-family: var(--font-mono);
  color: var(--c-link);
}

.spec-table tbody th,
.data-table tbody th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 700;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-line-soft);
  white-space: nowrap;
}

.spec-table tbody td,
.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--c-line-soft);
  color: var(--c-text);
  vertical-align: top;
}

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

.table-caption {
  caption-side: top;
}

.table-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--c-muted);
}

/* 折叠问答 */
.faq-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  margin-bottom: 10px;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 44px 14px 16px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-link);
}

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

.faq-answer {
  padding: 0 16px 16px;
  border-top: 1px solid var(--c-line-soft);
}

.faq-answer p {
  padding-top: 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

/* 延伸阅读 / 相关链接 */
.reading-list,
.related-list {
  display: grid;
  gap: 16px;
}

.reading-item,
.related-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-link);
  border-radius: var(--radius);
  padding: 16px;
}

.reading-item a,
.related-item a {
  display: inline-block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.reading-text,
.related-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 14px 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-links-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-muted);
}

.related-links-item {
  font-size: 13px;
  padding: 4px 10px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

/* 入口带 */
.entry-band {
  background: var(--c-primary);
  border-radius: var(--radius);
  padding: 28px 24px;
  margin-top: var(--sec-gap);
}

.entry-band h2 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 8px;
}

.entry-band .entry-text,
.entry-band .entry-band-text {
  color: #d7e2f2;
  font-size: 14px;
  max-width: 70ch;
}

.entry-actions,
.entry-band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.entry-band .btn-primary {
  background: #fff;
  color: var(--c-primary);
  border-color: #fff;
}

.entry-band .btn-primary:hover {
  background: var(--c-bg);
  color: var(--c-primary);
}

.entry-band .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.entry-band .btn-ghost:hover {
  background: #fff;
  color: var(--c-primary);
}

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

.home-main {
  display: block;
}

.hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: start;
}

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

.hero-line-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--c-warn);
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 14px;
}

.hero-text h1 {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
  margin-bottom: 12px;
  max-width: 56ch;
}

.hero-note {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
  margin-bottom: 22px;
  padding-left: 12px;
  border-left: 3px solid var(--c-line);
  max-width: 56ch;
}

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

.hero-figure {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.hero-caption {
  padding: 12px 16px 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px 16px;
}

.tag {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 3px;
  border: 1px solid transparent;
}

.tag-blue {
  color: var(--c-primary);
  background: #e8eff9;
  border-color: #c3d4ea;
}

.tag-orange {
  color: var(--c-warn);
  background: #fdece5;
  border-color: #f5c9b6;
}

.tag-green {
  color: var(--c-ok);
  background: #e6f4ee;
  border-color: #b9ddcb;
}

/* 线路导航带 */
.line-nav {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

.line-nav-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.line-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-top: 4px solid var(--c-primary);
  border-radius: var(--radius);
  padding: 14px 14px 16px;
  min-width: 0;
}

.line-item-b {
  border-top-color: var(--c-link);
}

.line-item-c {
  border-top-color: var(--c-warn);
}

.line-item-d {
  border-top-color: var(--c-ok);
}

.line-item-e {
  border-top-color: var(--c-muted);
}

.line-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-muted);
  margin-bottom: 6px;
}

.line-name {
  font-size: 16px;
  margin-bottom: 6px;
}

.line-name a {
  color: var(--c-primary);
}

.line-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-muted);
}

/* 服务目录摘要 */
.services-preview {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

.page-layout {
  display: grid;
  gap: var(--gap);
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 240px minmax(0, 1fr);
}

.side-catalog {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px;
  position: sticky;
  top: 88px;
}

.side-title {
  font-size: 14px;
  color: var(--c-muted);
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--c-line);
}

.catalog-list li {
  border-bottom: 1px solid var(--c-line-soft);
}

.catalog-list li:last-child {
  border-bottom: 0;
}

.catalog-list a {
  display: block;
  padding: 9px 8px;
  min-height: 40px;
  font-size: 14px;
  color: var(--c-text);
  border-left: 3px solid transparent;
}

.catalog-list a:hover {
  color: var(--c-link);
  background: var(--c-bg);
  text-decoration: none;
}

.catalog-list a.is-current {
  color: var(--c-link);
  font-weight: 700;
  border-left-color: var(--c-link);
  background: var(--c-bg);
}

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

.services-figure {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.services-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.services-figure figcaption {
  padding: 10px 16px 14px;
  font-size: 13px;
  color: var(--c-muted);
}

.service-rows {
  display: grid;
  gap: 12px;
}

.service-row {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
}

.row-mark {
  grid-row: 1 / span 3;
  width: 8px;
  height: 100%;
  min-height: 40px;
  border-radius: 4px;
  background: var(--c-link);
}

.mark-blue {
  background: var(--c-link);
}

.mark-orange {
  background: var(--c-warn);
}

.mark-green {
  background: var(--c-ok);
}

.row-name {
  font-size: 17px;
  margin-bottom: 4px;
}

.row-fit {
  font-size: 13px;
  color: var(--c-warn);
  margin-bottom: 6px;
}

.row-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

/* 交付节点轨道 */
.workflow-track {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

.node-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.node-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 14px;
  position: relative;
  min-width: 0;
}

.node-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--c-primary);
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 8px;
}

.node-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.node-out {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-muted);
}

.track-more {
  margin-top: 16px;
}

/* 交付标准参数表 */
.standards-table {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

/* 适配场景行 */
.scenario-rows {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

.scenario-list {
  display: grid;
  gap: 10px;
}

.scenario-row {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
}

.scenario-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  padding-left: 12px;
  border-left: 4px solid var(--c-link);
}

.scenario-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

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

/* 三列资料容器 */
.resource-columns {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

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

.resource-col {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.resource-title {
  font-size: 16px;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--c-line);
}

.resource-intro {
  font-size: 13px;
  color: var(--c-muted);
  margin-bottom: 10px;
}

.resource-list li {
  font-size: 14px;
  line-height: 1.75;
  padding: 6px 0 6px 16px;
  position: relative;
  border-bottom: 1px solid var(--c-line-soft);
}

.resource-list li:last-child {
  border-bottom: 0;
}

.resource-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-link);
}

/* 首页问题解答预览 */
.faq-preview {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-entry {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.faq-q {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 6px;
}

.faq-a {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

/* 首页合作入口带 */
.cooperation-band {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.band-inner {
  background: var(--c-primary);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.band-inner h2 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 8px;
}

.band-text {
  color: #d7e2f2;
  font-size: 14px;
  max-width: 70ch;
}

.band-desc {
  color: #b9cbe4;
  font-size: 13px;
  margin-top: 8px;
  max-width: 70ch;
}

.band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.band-inner .btn-primary {
  background: #fff;
  color: var(--c-primary);
  border-color: #fff;
}

.band-inner .btn-primary:hover {
  background: var(--c-bg);
  color: var(--c-primary);
}

.band-inner .btn-ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}

.band-inner .btn-ghost:hover {
  background: #fff;
  color: var(--c-primary);
}

/* ============================================================
   pages — 内页通用
   ============================================================ */

.page-head {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 5px solid var(--c-primary);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 32px;
}

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

.page-code,
.page-head-code,
.page-station {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--c-primary);
  padding: 3px 10px;
  border-radius: 3px;
  margin-bottom: 10px;
}

.page-station .station-code {
  font-family: var(--font-mono);
}

.page-lead,
.page-head-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
  max-width: 82ch;
}

.page-code .mono {
  font-family: var(--font-mono);
}

.page-media {
  margin-top: 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.page-media figcaption {
  padding: 10px 14px 12px;
  font-size: 13px;
  color: var(--c-muted);
}

.page-figure {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 32px;
}

.page-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.page-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  color: var(--c-muted);
}

/* 内页两栏：主内容 + 侧栏（默认主内容在前） */
.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 32px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 18px;
  position: sticky;
  top: 88px;
}

.layout-aside h2 {
  font-size: 16px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--c-line);
}

.aside-figure {
  margin-bottom: 16px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg);
}

.aside-figure img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.aside-figure figcaption {
  padding: 8px 10px 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-muted);
}

.aside-block {
  margin-bottom: 16px;
}

.aside-block h3,
.aside-links h3 {
  font-size: 14px;
  margin-bottom: 6px;
}

.aside-block p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.aside-list li {
  border-bottom: 1px solid var(--c-line-soft);
}

.aside-list li:last-child {
  border-bottom: 0;
}

.aside-list a {
  display: block;
  padding: 9px 4px;
  min-height: 40px;
  font-size: 14px;
}

.aside-note {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ============================================================
   pages — 服务目录
   ============================================================ */

.catalog-aside {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px;
  position: sticky;
  top: 88px;
  min-width: 0;
}

.aside-title {
  font-size: 15px;
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--c-line);
}

.catalog-nav {
  margin-bottom: 10px;
}

.catalog-note {
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-muted);
  padding-top: 10px;
  border-top: 1px solid var(--c-line-soft);
}

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

.service-entries {
  margin-bottom: var(--sec-gap);
}

.service-entry {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.entry-head {
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--c-line-soft);
}

.line-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--c-link);
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 8px;
}

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

.entry-meta {
  font-size: 13px;
  color: var(--c-muted);
}

.entry-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 14px;
}

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

.block-title {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--c-primary);
}

.entry-list li {
  font-size: 14px;
  line-height: 1.75;
  padding: 5px 0 5px 16px;
  position: relative;
}

.entry-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  background: var(--c-line);
  border-radius: 50%;
}

.entry-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

.entry-link {
  font-size: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--c-line-soft);
}

.compare-section {
  margin-bottom: var(--sec-gap);
}

.next-section {
  margin-top: var(--sec-gap);
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 14px;
}

/* ============================================================
   pages — 交付流程
   ============================================================ */

.line-code {
  margin-bottom: 12px;
}

.line-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--c-link);
  padding: 3px 10px;
  border-radius: 3px;
}

.node-track-section {
  margin-bottom: var(--sec-gap);
}

.node-detail-section {
  margin-bottom: var(--sec-gap);
}

.node-detail {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-link);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 14px;
}

.node-detail-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--c-line-soft);
}

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

.node-detail-meta {
  display: grid;
  gap: 8px;
  margin: 0;
}

.meta-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 6px 0;
}

.meta-row dt {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-muted);
}

.meta-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  min-width: 0;
}

.meta-row.is-client {
  background: #fdece5;
  border-radius: 4px;
  padding: 8px 10px;
}

.meta-row.is-client dt {
  color: var(--c-warn);
}

.node-figure {
  margin-top: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.node-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.node-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  color: var(--c-muted);
}

.material-checklist-section {
  margin-bottom: var(--sec-gap);
}

.material-checklist {
  display: grid;
  gap: 8px;
  margin-bottom: 24px;
}

.check-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 160px;
  gap: 14px;
  align-items: center;
}

.check-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-link);
}

.check-text {
  font-size: 14px;
  line-height: 1.7;
  min-width: 0;
}

.check-owner {
  display: inline-block;
  margin-left: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-warn);
  background: #fdece5;
  border-radius: 3px;
  padding: 1px 7px;
}

.check-time {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
  text-align: right;
}

.reject-reasons {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-warn);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.reject-list li {
  font-size: 14px;
  line-height: 1.75;
  padding: 6px 0 6px 16px;
  position: relative;
  border-bottom: 1px solid var(--c-line-soft);
}

.reject-list li:last-child {
  border-bottom: 0;
}

.reject-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-warn);
}

.related-reading {
  margin-bottom: var(--sec-gap);
}

/* ============================================================
   pages — 交付标准
   ============================================================ */

.quality-columns {
  margin-bottom: var(--sec-gap);
}

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

.quality-col {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-top: 4px solid var(--c-link);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.quality-col h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.quality-col p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 8px;
}

.quality-col p:last-child {
  margin-bottom: 0;
}

.exception-rules {
  margin-bottom: var(--sec-gap);
}

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

.rule-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
}

.rule-num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-line);
}

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

.rule-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

/* ============================================================
   pages — 适配场景
   ============================================================ */

.scenario-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: start;
  margin-bottom: var(--sec-gap);
}

.intro-figure {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.intro-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.intro-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  color: var(--c-muted);
}

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

.intro-text h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.intro-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
  margin-bottom: 10px;
}

.object-tabs-section {
  margin-bottom: 20px;
}

.object-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.object-tab {
  min-height: 44px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.object-tab:hover {
  border-color: var(--c-link);
  color: var(--c-link);
}

.object-tab.is-active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

.scenario-panels {
  margin-bottom: var(--sec-gap);
}

.scenario-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 20px;
}

.scenario-panel[hidden] {
  display: none;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--c-line);
}

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

.panel-mark {
  display: inline-block;
  width: 12px;
  height: 26px;
  border-radius: 3px;
  background: var(--c-link);
}

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

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

.panel-col-title {
  font-size: 15px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--c-line-soft);
}

.panel-list li {
  font-size: 14px;
  line-height: 1.75;
  padding: 5px 0 5px 16px;
  position: relative;
}

.panel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-link);
}

.scenario-diff {
  margin-bottom: var(--sec-gap);
}

.diff-rows {
  display: grid;
  gap: 10px;
}

.diff-row {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}

.diff-mark {
  width: 12px;
  height: 34px;
  border-radius: 3px;
  background: var(--c-link);
}

.diff-mark-platform {
  background: var(--c-link);
}

.diff-mark-brand {
  background: var(--c-warn);
}

.diff-mark-team {
  background: var(--c-ok);
}

.diff-mark-training {
  background: var(--c-primary);
}

.diff-text {
  font-size: 14px;
  line-height: 1.75;
  min-width: 0;
}

/* ============================================================
   pages — 问题解答
   ============================================================ */

.faq-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 28px;
  align-items: start;
  margin-bottom: var(--sec-gap);
}

.faq-intro-media {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-intro-media img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.faq-intro-media figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  color: var(--c-muted);
}

.faq-intro-text {
  min-width: 0;
}

.faq-intro-text h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.faq-intro-text p {
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 10px;
}

.faq-groups {
  margin-bottom: var(--sec-gap);
}

.faq-group {
  margin-bottom: 28px;
}

.faq-group h3 {
  font-size: 17px;
  padding-left: 12px;
  border-left: 4px solid var(--c-link);
  margin-bottom: 12px;
}

.faq-answer a {
  font-weight: 700;
}

.feedback-path {
  margin-bottom: var(--sec-gap);
}

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

.feedback-step {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.feedback-step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--c-primary);
  padding: 2px 8px;
  border-radius: 3px;
  margin-bottom: 10px;
}

.feedback-step h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.feedback-step p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

.faq-more {
  margin-bottom: var(--sec-gap);
}

.faq-more-body {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.faq-more-body > p {
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 12px;
}

.faq-more-list {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.faq-more-list li {
  font-size: 14px;
  line-height: 1.75;
  padding: 6px 0 6px 16px;
  position: relative;
  border-bottom: 1px solid var(--c-line-soft);
}

.faq-more-list li:last-child {
  border-bottom: 0;
}

.faq-more-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-link);
}

.page-aside {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 18px;
  margin-top: var(--sec-gap);
}

.page-aside h2 {
  font-size: 16px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--c-line);
}

/* ============================================================
   pages — 团队与现场
   ============================================================ */

.role-section,
.worksite-section,
.collab-section,
.review-section {
  margin-bottom: var(--sec-gap);
}

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

.role-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-primary);
  border-radius: var(--radius);
  padding: 16px 18px;
  min-width: 0;
}

.role-name {
  font-size: 17px;
  margin-bottom: 8px;
}

.role-duty {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 6px;
}

.role-contact {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
  padding-top: 8px;
  border-top: 1px solid var(--c-line-soft);
}

.worksite-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
}

.worksite-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 0;
}

.worksite-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.worksite-item figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.collab-timeline {
  display: grid;
  gap: 12px;
  border-left: 3px solid var(--c-line);
  padding-left: 20px;
}

.collab-step {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  position: relative;
  min-width: 0;
}

.collab-step::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-link);
  border: 2px solid var(--c-surface);
}

.collab-name {
  font-size: 16px;
  margin-bottom: 6px;
}

.collab-roles {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 4px;
}

.collab-output {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

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

.review-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-top: 4px solid var(--c-ok);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.review-trigger {
  font-size: 16px;
  margin-bottom: 8px;
}

.review-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

/* ============================================================
   pages — 合作路径
   ============================================================ */

.coop-visual {
  margin-bottom: var(--sec-gap);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.coop-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.coop-figure figcaption {
  padding: 12px 16px 14px;
  font-size: 13px;
  color: var(--c-muted);
}

.step-list-section,
.material-table-section,
.confirm-section,
.return-section {
  margin-bottom: var(--sec-gap);
}

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

.step-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  background: var(--c-primary);
  border-radius: 4px;
  text-align: center;
  padding: 6px 0;
}

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

.step-name {
  font-size: 17px;
  margin-bottom: 6px;
}

.step-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 6px;
}

.step-owner {
  font-size: 13px;
  color: var(--c-muted);
}

.owner-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-warn);
  background: #fdece5;
  border-radius: 3px;
  padding: 1px 8px;
  margin-left: 6px;
}

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

.confirm-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-link);
  border-radius: var(--radius);
  padding: 16px 18px;
  min-width: 0;
}

.confirm-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.confirm-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 8px;
}

.confirm-form {
  font-size: 13px;
  color: var(--c-muted);
}

.form-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-ok);
  background: #e6f4ee;
  border-radius: 3px;
  padding: 1px 8px;
  margin-left: 6px;
}

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

.return-item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-warn);
  border-radius: var(--radius);
  padding: 16px 18px;
  min-width: 0;
}

.return-name {
  font-size: 16px;
  margin-bottom: 6px;
}

.return-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
}

.entry-band-inner {
  background: var(--c-primary);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.entry-band-inner h2 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 8px;
}

.entry-band-inner .entry-band-text {
  color: #d7e2f2;
}

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

.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 72px;
}

.error-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-top: 5px solid var(--c-warn);
  border-radius: var(--radius);
  padding: 32px 28px;
  max-width: 760px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-warn);
  margin-bottom: 10px;
}

.error-panel h1 {
  font-size: 30px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
  margin-bottom: 20px;
  max-width: 60ch;
}

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

.error-links {
  padding-top: 20px;
  border-top: 1px solid var(--c-line-soft);
}

.error-links-title {
  font-size: 16px;
  margin-bottom: 12px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.error-link-list a {
  display: block;
  padding: 10px 14px;
  min-height: 44px;
  font-size: 14px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.error-link-list a:hover {
  border-color: var(--c-link);
  text-decoration: none;
}

/* ============================================================
   layout — 页脚
   ============================================================ */

.site-footer {
  background: var(--c-surface);
  border-top: 3px solid var(--c-primary);
  margin-top: 24px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
}

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

.footer-brand {
  font-size: 18px;
  margin-bottom: 10px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 8px;
}

.footer-boundary {
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.footer-nav,
.footer-read {
  min-width: 0;
}

.footer-title {
  font-size: 15px;
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--c-line);
}

.footer-list li {
  border-bottom: 1px solid var(--c-line-soft);
}

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

.footer-list a {
  display: block;
  padding: 7px 0;
  min-height: 36px;
  font-size: 14px;
  color: var(--c-text);
}

.footer-list a:hover {
  color: var(--c-link);
}

.footer-bottom {
  border-top: 1px solid var(--c-line);
}

.copyright {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px 18px;
  font-size: 13px;
  color: var(--c-muted);
}

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

@media (max-width: 1024px) {
  .site-nav.main-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-nav.is-open {
    display: block;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-top: 28px;
  }

  .line-nav-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
  }

  .side-catalog,
  .catalog-aside,
  .layout-aside {
    position: static;
  }

  .catalog-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .catalog-list li {
    border-bottom: 0;
  }

  .catalog-list a {
    border: 1px solid var(--c-line);
    border-left-width: 1px;
    border-radius: 4px;
    padding: 8px 12px;
  }

  .catalog-list a.is-current {
    border-color: var(--c-link);
  }

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

  .resource-grid,
  .quality-grid,
  .panel-grid,
  .review-list,
  .feedback-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .layout-aside {
    margin-top: 8px;
  }

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

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

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

@media (max-width: 720px) {
  .header-inner {
    padding: 0 16px;
    min-height: 60px;
  }

  .brand-sub {
    display: none;
  }

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

  .mobile-nav-list {
    padding: 8px 16px 14px;
  }

  .inner-main {
    padding: 16px 16px 48px;
  }

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

  .section-head h2,
  .section-title {
    font-size: 19px;
  }

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

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

  .hero-figure img {
    height: 220px;
  }

  .line-nav,
  .services-preview,
  .workflow-track,
  .standards-table,
  .scenario-rows,
  .resource-columns,
  .faq-preview,
  .cooperation-band {
    padding: 24px 16px;
  }

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

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

  .scenario-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .resource-grid,
  .quality-grid,
  .panel-grid,
  .review-list,
  .feedback-steps,
  .role-list,
  .worksite-gallery,
  .confirm-list,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .check-item {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px;
  }

  .check-time {
    grid-column: 2;
    text-align: left;
  }

  .step-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
  }

  .step-num {
    font-size: 15px;
  }

  .rule-item {
    grid-template-columns: 30px minmax(0, 1fr);
    column-gap: 10px;
  }

  .collab-timeline {
    padding-left: 14px;
  }

  .collab-step::before {
    left: -22px;
  }

  .error-main {
    padding: 32px 16px 48px;
  }

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

  .error-panel h1 {
    font-size: 24px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 28px 16px 20px;
  }

  .copyright {
    padding: 12px 16px 16px;
  }

  .entry-band,
  .band-inner,
  .entry-band-inner {
    padding: 22px 18px;
  }
}

@media (max-width: 390px) {
  .line-nav-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .brand-mark {
    width: 34px;
    height: 26px;
    font-size: 12px;
  }

  .brand-name {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .section-head,
  .service-row,
  .node-item,
  .quality-col,
  .role-item,
  .step-item {
    transition: border-color 0.18s ease, background-color 0.18s ease;
  }

  .service-row:hover,
  .node-item:hover,
  .quality-col:hover,
  .role-item:hover {
    border-color: var(--c-link);
  }
}