/* ==========================================================================
   囧次元 jencz.cn — 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* ------------------------------ base 基础层 ------------------------------ */

:root {
  --paper: #FBFBF9;
  --ink: #1F2A2E;
  --brand: #1D7A72;
  --brand-deep: #145C56;
  --mist: #EEF1F0;
  --grey: #6B7A7C;
  --accent: #C6662B;
  --line: #DCE2E1;
  --radius: 6px;
  --shell: 1120px;
  --read: 760px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
}

p {
  margin: 0;
}

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

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

a:hover,
a:focus-visible {
  color: var(--brand-deep);
}

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

figure {
  margin: 0;
}

figcaption {
  font-size: 14px;
  color: var(--grey);
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ------------------------------ layout 骨架层 ---------------------------- */

.container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-main {
  display: block;
  padding-bottom: 8px;
}

.inner-main {
  padding-top: 0;
}

.section {
  padding: 64px 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: var(--read);
  margin-bottom: 32px;
}

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

.section-desc,
.section-intro,
.section-lead {
  margin-top: 10px;
  max-width: var(--read);
  color: var(--grey);
  font-size: 15px;
}

.section-more {
  margin-top: 28px;
  font-size: 15px;
}

.link-more {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  font-weight: 500;
}

/* ------------------------------ components 组件层 ------------------------ */

/* 顶部事实条 */
.fact-bar {
  background-color: var(--mist);
  border-bottom: 1px solid var(--line);
}

.fact-bar-text {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 9px 24px;
  font-size: 13px;
  color: var(--grey);
}

/* 品牌标识 */
.brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0;
}

.brand::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-right: 9px;
  border-radius: 2px;
  background-color: var(--brand);
}

.brand:hover,
.brand:focus-visible {
  color: var(--brand);
}

/* 主导航 */
.site-nav {
  display: block;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  border-bottom: 2px solid transparent;
  font-size: 15px;
  color: var(--ink);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--brand);
}

.nav-link.is-current {
  color: var(--brand);
  border-bottom-color: var(--brand);
  font-weight: 500;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

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

/* 面包屑 */
.breadcrumb {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px 24px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--grey);
}

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

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

/* 内页标题区 */
.page-header {
  background-color: var(--mist);
  border-bottom: 1px solid var(--line);
  padding: 34px 0 38px;
}

.page-header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.page-title {
  font-size: 34px;
  font-weight: 600;
  color: var(--ink);
}

.page-lead,
.page-description {
  margin-top: 14px;
  max-width: var(--read);
  font-size: 16px;
  color: var(--grey);
}

.page-meta {
  margin-top: 12px;
  font-size: 14px;
  color: var(--grey);
}

/* 页内锚点导航 */
.anchor-nav {
  border-bottom: 1px solid var(--line);
  background-color: var(--paper);
}

.anchor-nav-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.anchor-nav-label {
  font-size: 13px;
  color: var(--grey);
}

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

.anchor-nav-list a,
.anchor-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 14px;
  color: var(--brand);
}

.anchor-nav-list a:hover,
.anchor-link:hover {
  color: var(--brand-deep);
  text-decoration: underline;
}

/* 编号标记 */
.direction-no,
.stage-no,
.stage-num,
.scope-code,
.sitemap-no,
.prepare-index,
.acceptance-label {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--accent);
}

/* 图片区块统一约束 */
.hero-figure,
.content-media,
.direction-figure,
.section-figure,
.section-media,
.faq-media {
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--mist);
}

.hero-figure img,
.content-media img,
.direction-figure img,
.section-figure img,
.section-media img,
.faq-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

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

.content-media img,
.section-figure img,
.section-media img {
  aspect-ratio: 16 / 9;
}

.direction-figure img {
  aspect-ratio: 3 / 2;
}

.faq-media img {
  aspect-ratio: 16 / 9;
}

.hero-figure figcaption,
.content-media figcaption,
.direction-figure figcaption,
.section-figure figcaption,
.media-caption,
.faq-media figcaption {
  padding: 10px 2px 0;
  font-size: 13px;
  line-height: 1.6;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background-color: var(--brand);
  color: #FFFFFF;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--brand-deep);
  color: #FFFFFF;
}

.btn-ghost {
  border-color: var(--line);
  background-color: var(--paper);
  color: var(--ink);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
}

/* 折叠问答 */
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  padding: 14px 18px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--brand);
}

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

.faq-item[open] .faq-question {
  color: var(--brand-deep);
}

.faq-answer {
  padding: 0 18px 16px;
  font-size: 15px;
  color: var(--grey);
}

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

/* 侧栏通用块 */
.aside-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--mist);
}

.aside-block + .aside-block {
  margin-top: 16px;
}

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

.aside-text {
  margin-top: 10px;
  font-size: 14px;
  color: var(--grey);
}

.aside-links,
.aside-link-list {
  margin-top: 12px;
}

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

.aside-links a,
.aside-link-list a {
  font-size: 14px;
}

/* 页脚 */
.site-footer {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  background-color: var(--mist);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  padding-top: 44px;
  padding-bottom: 32px;
}

.footer-group-title {
  font-size: 15px;
  color: var(--ink);
}

.footer-list {
  margin-top: 12px;
}

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

.footer-list a {
  display: inline-block;
  min-height: 24px;
  font-size: 14px;
  color: var(--grey);
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--brand);
}

.footer-bottom {
  padding-top: 20px;
  padding-bottom: 28px;
  border-top: 1px solid var(--line);
}

.footer-brand {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.footer-note {
  margin-top: 8px;
  max-width: var(--read);
  font-size: 14px;
  color: var(--grey);
}

.footer-copy {
  margin-top: 10px;
  font-size: 13px;
  color: var(--grey);
}

/* ------------------------------ pages 页面层 ----------------------------- */

/* ===== 首页 ===== */

.hero {
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--line);
}

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

.hero-copy {
  max-width: 560px;
}

.hero-kicker {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  background-color: var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--brand);
}

.hero-title {
  margin-top: 16px;
  font-size: 34px;
  font-weight: 600;
}

.hero-lead {
  margin-top: 16px;
  font-size: 16px;
  color: var(--grey);
}

.hero-note {
  margin-top: 12px;
  font-size: 14px;
  color: var(--grey);
}

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

.content-media-primary {
  margin-top: 44px;
}

/* 服务方向索引 */
.direction-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.direction-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.18s ease;
}

.direction-item:hover {
  background-color: var(--mist);
}

.direction-no {
  font-size: 15px;
}

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

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

.direction-scope {
  margin-top: 8px;
  max-width: var(--read);
  font-size: 15px;
}

.direction-fit {
  margin-top: 6px;
  max-width: var(--read);
  font-size: 14px;
  color: var(--grey);
}

/* 合作流程四阶段 */
.stage-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stage-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.stage-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
}

.stage-no {
  font-size: 14px;
}

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

.stage-party {
  margin-top: 10px;
  font-size: 14px;
}

.stage-output {
  margin-top: 6px;
  font-size: 14px;
  color: var(--grey);
}

/* 交付范围与验收标准摘要 */
.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.scope-col {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--mist);
}

.scope-col-title {
  font-size: 18px;
}

.scope-list {
  margin-top: 14px;
}

.scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
}

.scope-list li + li {
  margin-top: 10px;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background-color: var(--brand);
}

/* 站内栏目索引 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.sitemap-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 44px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  color: var(--ink);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.sitemap-card:hover,
.sitemap-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--brand);
  color: var(--brand);
}

.sitemap-card.is-current {
  border-color: var(--brand);
  background-color: var(--mist);
}

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

.sitemap-name {
  font-size: 16px;
  font-weight: 500;
}

.sitemap-desc {
  font-size: 13px;
  color: var(--grey);
}

/* ===== 服务方向页 ===== */

.section-index .direction-table {
  border-top: 1px solid var(--line);
}

.direction-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.direction-row-body {
  min-width: 0;
}

.direction-row-name {
  font-size: 18px;
}

.direction-row-summary {
  margin-top: 6px;
  max-width: var(--read);
  font-size: 15px;
  color: var(--grey);
}

.direction-detail {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.direction-detail:first-of-type {
  padding-top: 8px;
}

.direction-detail-aside {
  min-width: 0;
}

.direction-detail-name {
  margin-top: 8px;
  font-size: 20px;
}

.direction-detail-tag {
  margin-top: 8px;
  font-size: 14px;
  color: var(--grey);
}

.direction-detail-body {
  min-width: 0;
}

.direction-block + .direction-block {
  margin-top: 22px;
}

.direction-block-title {
  font-size: 16px;
  color: var(--brand-deep);
}

.direction-block .direction-list {
  margin-top: 10px;
  border-top: none;
}

.direction-block .direction-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
}

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

.direction-block .direction-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background-color: var(--accent);
}

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

.boundary-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--mist);
}

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

.boundary-text {
  margin-top: 10px;
  font-size: 15px;
  color: var(--grey);
}

.boundary-next {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 15px;
}

.boundary-next a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  font-weight: 500;
}

/* ===== 合作流程页 ===== */

.section-overview .stage-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.stage-strip-item {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--mist);
}

.stage-strip-item .stage-name {
  margin-top: 8px;
  font-size: 17px;
}

.stage-brief {
  margin-top: 8px;
  font-size: 14px;
  color: var(--grey);
}

.section-stage-detail .stage-block {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.section-stage-detail .stage-block:first-of-type {
  padding-top: 8px;
}

.stage-block-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

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

.stage-block-body {
  margin-top: 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
}

.stage-block-desc {
  font-size: 15px;
}

.stage-meta {
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--mist);
}

.stage-meta dt {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.stage-meta dd {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--ink);
}

.stage-meta dd + dt {
  margin-top: 12px;
}

.section-stage-detail .section-media {
  margin-top: 32px;
}

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

.gate-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
}

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

.gate-desc {
  margin-top: 10px;
  font-size: 15px;
  color: var(--grey);
}

.section-cross {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 15px;
}

.section-cross a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  font-weight: 500;
}

/* ===== 交付范围页 ===== */

.section-scope-table .section-figure {
  margin-top: 24px;
}

.scope-table {
  margin-top: 28px;
  border-top: 1px solid var(--line);
}

.scope-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.scope-row-body {
  min-width: 0;
}

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

.scope-meta {
  margin-top: 6px;
  max-width: var(--read);
  font-size: 14px;
  color: var(--grey);
}

.acceptance-list {
  margin-top: 8px;
  border-top: 1px solid var(--line);
}

.acceptance-item {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.acceptance-head {
  min-width: 0;
}

.acceptance-name {
  margin-top: 8px;
  font-size: 18px;
}

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

.acceptance-basis,
.acceptance-check {
  font-size: 15px;
}

.acceptance-basis::before,
.acceptance-check::before {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.acceptance-basis::before {
  content: "验收依据";
}

.acceptance-check::before {
  content: "核对方式";
}

.acceptance-check {
  color: var(--grey);
}

.out-of-scope-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 8px;
}

.out-of-scope-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--mist);
}

.out-of-scope-name {
  font-size: 17px;
}

.out-of-scope-desc {
  margin-top: 10px;
  font-size: 15px;
  color: var(--grey);
}

.section-aside.scope-aside {
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
}

/* ===== 问题解答页 ===== */

.faq-cat-nav {
  padding: 40px 0 0;
}

.faq-cat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.faq-cat-item {
  min-width: 0;
}

.faq-cat-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  font-size: 15px;
  color: var(--ink);
}

.faq-cat-link:hover,
.faq-cat-link:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
}

.faq-list-section {
  padding: 40px 0 64px;
}

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  align-items: start;
}

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

.faq-group + .faq-group {
  margin-top: 40px;
}

.faq-group-title {
  font-size: 20px;
}

.faq-group-lead {
  margin-top: 8px;
  max-width: var(--read);
  font-size: 15px;
  color: var(--grey);
}

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

.faq-group .faq-item {
  margin-top: 14px;
}

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

.prepare-section {
  padding: 56px 0 64px;
  border-top: 1px solid var(--line);
  background-color: var(--mist);
}

.prepare-list {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.prepare-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
}

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

.prepare-index {
  font-size: 15px;
}

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

.prepare-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--grey);
}

/* ===== 404 ===== */

.error-main {
  padding: 72px 0 88px;
}

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

.error-code {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--accent);
}

.error-title {
  margin-top: 12px;
  font-size: 34px;
}

.error-text {
  margin-top: 14px;
  font-size: 16px;
  color: var(--grey);
}

.error-links {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.error-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--paper);
  font-size: 15px;
  color: var(--ink);
}

.error-links a:hover,
.error-links a:focus-visible {
  border-color: var(--brand);
  color: var(--brand);
}

.error-home {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 28px;
  padding: 0 20px;
  border-radius: var(--radius);
  background-color: var(--brand);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 500;
}

.error-home:hover,
.error-home:focus-visible {
  background-color: var(--brand-deep);
  color: #FFFFFF;
}

/* ------------------------------ responsive 响应式 ------------------------ */

@media (max-width: 960px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 0 24px 12px;
    background-color: var(--paper);
    border-bottom: 1px solid var(--line);
  }

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

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

  .nav-link {
    justify-content: flex-start;
    border-bottom: 1px solid var(--line);
  }

  .nav-link.is-current {
    border-bottom-color: var(--brand);
  }

  .site-header {
    position: relative;
  }

  .header-inner {
    position: relative;
  }

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

  .hero-copy {
    max-width: none;
  }

  .hero-figure {
    order: -1;
  }

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

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

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

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

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

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

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

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

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .container,
  .header-inner,
  .breadcrumb,
  .page-header-inner,
  .anchor-nav-inner,
  .fact-bar-text {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    padding: 44px 0;
  }

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

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

  .hero {
    padding: 36px 0 32px;
  }

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

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

  .page-header {
    padding: 24px 0 28px;
  }

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

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

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

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

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

  .section-boundary .boundary-list,
  .section-gates .gate-list,
  .out-of-scope-list,
  .prepare-list,
  .error-links {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-overview .stage-strip {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .anchor-nav-inner {
    gap: 8px;
    padding-top: 4px;
    padding-bottom: 4px;
  }

  .anchor-nav-list {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .anchor-nav-list a {
    white-space: nowrap;
  }

  .faq-cat-list {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .faq-cat-link {
    white-space: nowrap;
  }

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