/* ==========================================================================
   奇漫屋 · 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --canvas: #f4f4f2;
  --surface: #ffffff;
  --ink: #1c1c1a;
  --ink-soft: #5d5d58;
  --ink-faint: #8b8b85;
  --line: #dcdcd6;
  --line-strong: #c3c3bb;
  --accent: #3f6b5c;
  --accent-soft: #e8efeb;
  --warn: #8a5a2b;
  --warn-soft: #f4ece2;
  --radius: 6px;
  --shell: 1120px;
  --gutter: 24px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Menlo, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

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

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

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

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: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

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

figure {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

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

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

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.inner-main {
  padding-bottom: 72px;
}

/* 页头 */
.site-header {
  position: relative;
  z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  max-width: var(--shell);
  min-height: 64px;
  margin: 0 auto;
  padding: 8px var(--gutter);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
}

.brand-mark {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

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

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

.nav-item {
  display: block;
}

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-link:hover {
  color: var(--ink);
  border-bottom-color: var(--line-strong);
}

.nav-link.is-current {
  color: var(--accent);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.breadcrumb a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

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

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

/* 页面标题区 */
.page-header {
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--line);
}

.page-description {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.page-title {
  margin-top: 10px;
  font-size: 34px;
  font-weight: 600;
  color: var(--ink);
}

.page-lead {
  max-width: 760px;
  margin-top: 12px;
  font-size: 16px;
  color: var(--ink-soft);
}

.page-meta,
.page-updated {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-faint);
}

.page-meta a,
.page-updated a {
  color: var(--accent);
}

/* 页面布局容器 */
.page-layout {
  padding: 40px 0 0;
}

.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 48px;
  align-items: start;
}

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

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px var(--gutter) 32px;
}

.footer-brand {
  max-width: 380px;
}

.footer-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.footer-position {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-soft);
}

.footer-scope {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-faint);
}

.footer-group-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

.footer-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-list a {
  display: inline-block;
  padding: 2px 0;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.footer-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.footer-bottom {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px var(--gutter) 28px;
  border-top: 1px solid var(--line);
}

.footer-copy {
  font-size: 12.5px;
  color: var(--ink-faint);
}

/* --------------------------------------------------------------------------
   components · 通用组件
   -------------------------------------------------------------------------- */

/* 顶栏事实条 */
.top-factbar,
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--accent-soft);
  border-bottom: 1px solid var(--line);
}

.top-factbar-text,
.topbar-text {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 8px var(--gutter);
  font-size: 13px;
  color: var(--ink-soft);
}

.top-factbar {
  padding: 0;
}

.top-factbar .top-factbar-text {
  max-width: none;
  padding-right: 0;
}

.skip-link,
.topbar-skip {
  flex: 0 0 auto;
  margin-right: var(--gutter);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  white-space: nowrap;
}

.skip-link:hover,
.topbar-skip:hover {
  border-color: var(--accent);
}

.topbar {
  padding: 0;
}

.topbar .topbar-text {
  max-width: none;
  padding-right: 0;
}

/* 通用 section 头部 */
.section {
  padding: 56px 0 0;
}

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

.section-no,
.section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.section-title {
  margin-top: 8px;
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
}

.section-desc,
.section-intro,
.section-lead {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.section-intro a,
.section-lead a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.section-foot {
  margin-top: 20px;
  font-size: 14px;
}

.foot-link {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}

.foot-link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.text-link {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

/* 通用图片容器 */
.hero-figure,
.workflow-figure,
.direction-media,
.media,
.section-figure,
.faq-figure {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.hero-figure figcaption,
.workflow-figure figcaption,
.media-caption,
.figure-caption,
.faq-figure figcaption {
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--ink-faint);
  background: var(--surface);
  border-top: 1px solid var(--line);
}

/* 通用列表与卡片 */
.col-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

.col-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.col-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--line-strong);
}

/* 相关入口区（通用） */
.related-section {
  padding-top: 56px;
}

.related-list {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.related-item {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.related-item:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.related-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid transparent;
}

.related-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.related-desc {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

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

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

.faq-question {
  position: relative;
  padding: 14px 44px 14px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -6px;
  border-right: 1.5px solid var(--ink-soft);
  border-bottom: 1.5px solid var(--ink-soft);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

.faq-item[open] .faq-question::after {
  margin-top: -2px;
  transform: rotate(-135deg);
}

.faq-answer {
  padding: 0 16px 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

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

/* 按钮（404） */
.btn {
  display: inline-block;
  padding: 11px 22px;
  font-size: 15px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #35594c;
  border-color: #35594c;
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.home-main {
  padding-bottom: 72px;
}

/* 首屏 */
.hero {
  padding: 52px 0 8px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.hero-title {
  margin-top: 12px;
  font-size: 36px;
  font-weight: 600;
  color: var(--ink);
}

.hero-lead {
  margin-top: 16px;
  max-width: 560px;
  font-size: 16px;
  color: var(--ink-soft);
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.action-link {
  display: inline-block;
  padding: 10px 18px;
  font-size: 14.5px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.action-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.hero-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}

.hero-index-item {
  display: block;
}

.hero-index-item a {
  display: block;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.hero-index-item a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* 服务方向总览 */
.direction-rows {
  margin-top: 26px;
  border-top: 1px solid var(--line);
}

.direction-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 18px 4px;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.direction-row:hover {
  border-bottom-color: var(--line-strong);
  transform: translateY(-2px);
}

.row-no {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.row-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.row-meta {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.row-entry {
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  white-space: nowrap;
}

.row-entry:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* 协作流程阶段速览 */
.workflow-overview .workflow-figure {
  margin-top: 26px;
}

.workflow-overview .workflow-figure img {
  aspect-ratio: 16 / 6;
}

.stage-strip {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stage-item {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.stage-item:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.stage-no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
}

.stage-name {
  margin-top: 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.stage-action {
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.stage-output {
  margin-top: 12px;
  padding-top: 12px;
  font-size: 13px;
  color: var(--ink-faint);
  border-top: 1px dashed var(--line);
}

/* 交付标准与边界摘要 */
.delivery-columns {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.delivery-col {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.delivery-col-included {
  border-left: 3px solid var(--accent);
}

.delivery-col-excluded {
  border-left: 3px solid var(--warn);
}

.delivery-col-excluded .col-title {
  color: var(--warn);
}

/* 常见问题速览 */
.faq-groups {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.faq-group-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.faq-group .faq-item {
  margin-top: 12px;
}

/* 对接准备入口 */
.preparation-columns {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.preparation-col {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* 站内栏目索引 */
.site-index-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.site-index-card {
  display: block;
}

.site-index-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.site-index-link:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.index-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.index-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.index-desc {
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 服务方向页
   -------------------------------------------------------------------------- */

.sidebar-left .page-layout,
.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.side-rail {
  position: sticky;
  top: 24px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rail-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

.rail-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rail-item a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 8px;
  font-size: 14px;
  color: var(--ink-soft);
  border-radius: var(--radius);
  border-left: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.rail-item a:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

.rail-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.rail-note {
  margin-top: 16px;
  padding-top: 14px;
  font-size: 12.5px;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
}

.content-column {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.direction-block {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

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

.direction-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.direction-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
}

.direction-intro {
  margin-top: 14px;
  font-size: 15px;
  color: var(--ink-soft);
}

.direction-media {
  margin-top: 20px;
}

.direction-media img {
  aspect-ratio: 16 / 8;
}

.direction-fields {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

.field-exclude {
  grid-column: 1 / -1;
  border-left: 3px solid var(--warn);
}

.field-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.field-exclude .field-title {
  color: var(--warn);
}

.field-text {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.field-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.field-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--warn);
}

.direction-entry {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.direction-entry a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.direction-entry a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.confirm-section {
  padding-top: 8px;
}

.confirm-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.confirm-item {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.confirm-text {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.related-section .related-grid,
.related-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.related-col {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.related-col:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

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

.related-text {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 协作流程页
   -------------------------------------------------------------------------- */

.layout-main {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.layout-main .workflow-overview,
.layout-main .workflow-stages,
.layout-main .workflow-checkpoints,
.layout-main .workflow-faq {
  padding: 0;
}

.layout-main .section-title {
  font-size: 22px;
}

.workflow-overview .stage-strip {
  margin-top: 22px;
}

.stage-strip-item {
  display: block;
}

.stage-strip-link {
  display: block;
  height: 100%;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.stage-strip-link:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.stage-strip-link .stage-name {
  margin-top: 8px;
}

.stage-strip-link .stage-brief {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-soft);
}

.workflow-stages .stage-block {
  margin-top: 28px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stage-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

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

.stage-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.stage-summary {
  flex: 1 1 100%;
  font-size: 14px;
  color: var(--ink-soft);
}

.stage-body {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

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

.stage-col {
  padding: 16px 18px;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stage-col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.stage-col .stage-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stage-col .stage-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.stage-col .stage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--line-strong);
}

.stage-output {
  padding: 14px 18px;
  background: var(--accent-soft);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--ink-soft);
}

.stage-gate {
  padding: 14px 18px;
  background: var(--warn-soft);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--ink-soft);
}

.workflow-checkpoints .workflow-figure {
  margin-top: 22px;
}

.workflow-checkpoints .workflow-figure img {
  aspect-ratio: 16 / 7;
}

.checkpoint-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checkpoint-item {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.checkpoint-num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
}

.checkpoint-text {
  font-size: 14.5px;
  color: var(--ink-soft);
}

.workflow-faq-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.workflow-faq-q {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.workflow-faq-a {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.workflow-faq-item .text-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13.5px;
}

/* 阶段索引侧栏 */
.stage-index {
  position: sticky;
  top: 24px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.aside-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

.aside-intro {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-soft);
}

.aside-list {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.aside-item a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 8px;
  font-size: 14px;
  color: var(--ink-soft);
  border-radius: var(--radius);
  border-left: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.aside-item a:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

.aside-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.aside-note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.aside-note-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
}

.aside-note p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--ink-soft);
}

.aside-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

/* --------------------------------------------------------------------------
   pages · 交付标准页
   -------------------------------------------------------------------------- */

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

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

.deliverable-list {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.deliverable-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 120px;
  gap: 20px;
  align-items: baseline;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
}

.deliverable-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.deliverable-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.deliverable-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.deliverable-stage {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-faint);
  text-align: right;
}

.section-figure {
  margin-top: 26px;
}

.section-figure img {
  aspect-ratio: 16 / 7;
}

.table-scroll {
  margin-top: 24px;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.scope-caption {
  padding: 14px 18px;
  font-size: 12.5px;
  color: var(--ink-faint);
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.scope-table thead th {
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-align: left;
  background: var(--canvas);
  border-bottom: 1px solid var(--line);
}

.scope-table tbody th,
.scope-table tbody td {
  padding: 14px 18px;
  font-size: 14px;
  color: var(--ink-soft);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.scope-table tbody th {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

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

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

.column-block {
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

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

.check-item {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.check-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--accent);
}

.section-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--ink-soft);
}

.section-note a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.change-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.change-item {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.change-index {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
}

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

.change-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.faq-index-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.faq-index-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.faq-index-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.faq-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

.faq-index-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.faq-index-count {
  font-size: 12.5px;
  color: var(--ink-soft);
}

.faq-index-note {
  font-size: 12.5px;
  color: var(--ink-faint);
}

.faq-group {
  padding-top: 48px;
}

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

.faq-group-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.faq-figure {
  margin-top: 22px;
}

.faq-figure img {
  aspect-ratio: 16 / 6;
}

.faq-list {
  margin-top: 22px;
}

.related-section .related-grid {
  margin-top: 22px;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.related-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.related-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
}

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

.related-note {
  font-size: 13px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages · 对接准备页
   -------------------------------------------------------------------------- */

.layout-preparation .page-layout,
.page-layout.layout-preparation {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.layout-preparation .section {
  padding-top: 44px;
}

.layout-preparation .section:first-child {
  padding-top: 0;
}

.section-materials .material-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.material-item {
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.material-name {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.material-no {
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 400;
  color: var(--accent);
}

.material-use {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.material-flag {
  display: inline-block;
  margin-top: 10px;
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  border-radius: 4px;
}

.material-flag-required {
  color: var(--accent);
  background: var(--accent-soft);
}

.material-flag-suggest {
  color: var(--ink-soft);
  background: var(--canvas);
  border: 1px solid var(--line);
}

.material-flag-later {
  color: var(--warn);
  background: var(--warn-soft);
}

.media-materials {
  margin-top: 22px;
}

.media-materials img {
  aspect-ratio: 16 / 7;
}

.section-materials .section-foot {
  margin-top: 20px;
  font-size: 14px;
}

.section-materials .section-foot a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.points-columns {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.points-col {
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.points-col-do {
  border-left: 3px solid var(--accent);
}

.points-col-miss {
  border-left: 3px solid var(--warn);
}

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

.points-col-miss .points-title {
  color: var(--warn);
}

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

.points-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

.points-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--line-strong);
}

.path-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  counter-reset: path;
}

.path-step {
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.path-no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
}

.path-name {
  margin-top: 8px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}

.path-action {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.path-action a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.next-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.next-item {
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.next-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.next-desc a {
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.section-related {
  padding-top: 44px;
}

.section-related .related-list {
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-related .related-item {
  padding: 16px 18px;
}

.section-related .related-item a {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-related .related-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.section-related .related-desc {
  font-size: 13px;
  color: var(--ink-soft);
}

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

.error-main {
  padding-top: 80px;
  padding-bottom: 80px;
}

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

.error-code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.error-title {
  margin-top: 12px;
  font-size: 32px;
  font-weight: 600;
  color: var(--ink);
}

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

.error-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-links {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.error-links-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.error-link-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.error-link-list a {
  display: block;
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.error-link-list a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

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

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 1 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line);
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 12px 4px;
    min-height: 44px;
    border-bottom: 1px solid var(--line);
  }

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

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

  .hero-title {
    font-size: 30px;
  }

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

  .delivery-columns,
  .preparation-columns,
  .direction-fields,
  .stage-columns,
  .two-column,
  .points-columns {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

  .side-rail,
  .stage-index {
    position: static;
  }

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

  .layout-aside.stage-index {
    order: -1;
  }

  .deliverable-row {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 14px;
  }

  .deliverable-stage {
    grid-column: 2;
    text-align: left;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 600px) {
  :root {
    --gutter: 16px;
  }

  body {
    font-size: 15.5px;
  }

  .top-factbar,
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 8px 0;
  }

  .top-factbar .top-factbar-text,
  .topbar .topbar-text {
    padding: 0 var(--gutter);
  }

  .skip-link,
  .topbar-skip {
    margin: 0 var(--gutter) 4px;
  }

  .page-header {
    padding: 20px 0 22px;
  }

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

  .hero {
    padding: 32px 0 4px;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .action-link {
    text-align: center;
  }

  .section {
    padding-top: 40px;
  }

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

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

  .row-entry {
    grid-column: 2;
    justify-self: start;
  }

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

  .site-index-grid,
  .faq-index-grid,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .faq-index-grid {
    display: flex;
    overflow-x: auto;
    gap: 12px;
    padding-bottom: 6px;
    scroll-snap-type: x proximity;
  }

  .faq-index-card {
    flex: 0 0 78%;
    scroll-snap-align: start;
  }

  .deliverable-row {
    grid-template-columns: 32px minmax(0, 1fr);
  }

  .change-item {
    flex-direction: column;
    gap: 6px;
  }

  .checkpoint-item {
    flex-direction: column;
    gap: 6px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 36px var(--gutter) 24px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .error-main {
    padding-top: 48px;
    padding-bottom: 56px;
  }

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

  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    text-align: center;
  }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .direction-row,
  .stage-item,
  .site-index-link,
  .related-item,
  .related-card,
  .related-col,
  .faq-index-card,
  .stage-strip-link {
    transition: none;
  }

  .direction-row:hover,
  .stage-item:hover,
  .site-index-link:hover,
  .related-item:hover,
  .related-card:hover,
  .related-col:hover,
  .faq-index-card:hover,
  .stage-strip-link:hover {
    transform: none;
  }
}