:root {
  --color-primary: #2f7a6b;
  --color-primary-dark: #256457;
  --color-ink: #1f3f38;
  --color-bg: #f6f8f7;
  --color-surface: #ffffff;
  --color-accent: #c97b3c;
  --color-line: #dfe5e3;
  --color-text: #2c3835;
  --color-muted: #5f6f6b;
  --radius-card: 8px;
  --radius-pill: 999px;
  --shadow-soft: 0 1px 2px rgba(31, 63, 56, 0.06);
  --container: 1120px;
  --gutter: 24px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
    sans-serif;
}

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

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

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

body.site-body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--color-ink);
  font-weight: 600;
  line-height: 1.4;
}

p {
  margin: 0;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

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

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

figure {
  margin: 0;
}

figcaption {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.6;
}

strong {
  font-weight: 600;
  color: var(--color-ink);
}

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

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

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-main {
  display: block;
}

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

.site-footer {
  background-color: var(--color-ink);
  color: #d7e2df;
  margin-top: 56px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px var(--gutter) 28px;
}

/* ==========================================================================
   components — 页头 / 导航
   ========================================================================== */

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--color-ink);
  min-height: 44px;
  justify-content: center;
}

.brand:hover {
  color: var(--color-primary);
}

.brand-name {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand-note {
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.4;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  background-color: var(--color-surface);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

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

.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 14px;
  border-radius: 6px;
  color: var(--color-ink);
  font-size: 15px;
}

.nav-link:hover {
  background-color: #eef3f1;
  color: var(--color-primary-dark);
}

.nav-link.is-current {
  color: var(--color-primary);
  font-weight: 600;
  background-color: #e8f1ee;
}

/* ==========================================================================
   components — 顶部信息条
   ========================================================================== */

.topbar {
  background-color: #e8f1ee;
  border-bottom: 1px solid var(--color-line);
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 14px;
  padding: 9px var(--gutter);
  text-align: center;
}

.topbar-text {
  font-size: 14px;
  color: var(--color-ink);
}

.topbar-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ==========================================================================
   components — 通用按钮 / 链接
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
}

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

.btn-ghost:hover {
  background-color: #e8f1ee;
  color: var(--color-primary-dark);
}

.text-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.inline-link {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ==========================================================================
   components — 面包屑 / 页面标题区
   ========================================================================== */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 14px;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  color: #9aa8a4;
}

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

.page-header {
  padding: 18px 0 26px;
  border-bottom: 1px solid var(--color-line);
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--color-ink);
}

.page-description {
  margin-top: 12px;
  max-width: 72ch;
  font-size: 16px;
  color: var(--color-muted);
}

/* ==========================================================================
   components — 通用区块
   ========================================================================== */

.section {
  padding: 44px 0;
  border-bottom: 1px solid var(--color-line);
}

.section:last-of-type {
  border-bottom: none;
}

.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section-head {
  max-width: 72ch;
  margin-bottom: 26px;
}

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

.section-desc,
.section-intro,
.section-lead {
  margin-top: 10px;
  font-size: 16px;
  color: var(--color-muted);
  max-width: 72ch;
}

.section-body {
  display: block;
}

/* ==========================================================================
   components — 图片容器
   ========================================================================== */

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

.hero-media,
.direction-media,
.stage-figure,
.section-figure,
.page-figure {
  overflow: hidden;
  border-radius: var(--radius-card);
  background-color: #e9efed;
}

.hero-caption,
.direction-caption,
.figure-caption,
.page-figure-caption {
  margin-top: 10px;
  font-size: 14px;
  color: var(--color-muted);
}

/* ==========================================================================
   components — 列表通用
   ========================================================================== */

.check-list,
.boundary-list,
.direction-list,
.stage-list,
.prepare-list,
.scope-list,
.related-list,
.column-index,
.scene-list,
.blocker-list,
.rework-list,
.standard-list,
.advice-list,
.direction-index,
.flow-strip,
.error-entries {
  list-style: none;
}

.check-item,
.boundary-item,
.direction-li,
.stage-list-item,
.prepare-item,
.scope-li,
.related-item,
.column-item,
.scene-row,
.blocker-item,
.rework-item,
.standard-item,
.advice-item,
.direction-index-item,
.flow-item,
.error-entry {
  position: relative;
}

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

.home-main {
  display: block;
}

.hero {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px var(--gutter) 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

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

.hero-eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background-color: #e8f1ee;
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 600;
}

.hero-title {
  margin-top: 16px;
  font-size: 34px;
  font-weight: 600;
  color: var(--color-ink);
}

.hero-lead {
  margin-top: 16px;
  max-width: 56ch;
  font-size: 17px;
  color: var(--color-muted);
}

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

.hero-points {
  margin-top: 26px;
  display: grid;
  gap: 10px;
}

.hero-point {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--color-text);
}

.hero-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.hero-media {
  min-width: 0;
  aspect-ratio: 4 / 3;
}

.content-media-primary {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 40px;
}

.content-media-primary img {
  width: 100%;
  aspect-ratio: 16 / 7;
}

/* 服务方向总览 */

.direction-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.direction-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
}

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

.direction-no {
  display: inline-block;
  margin-right: 10px;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

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

.direction-for {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-primary-dark);
}

.direction-work {
  margin-top: 6px;
  font-size: 15px;
  color: var(--color-muted);
  max-width: 72ch;
}

.direction-link {
  align-self: center;
  white-space: nowrap;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  padding: 10px 14px;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.direction-link:hover {
  border-color: var(--color-primary);
  background-color: #e8f1ee;
}

/* 合作流程四阶段 */

.flow-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.flow-item {
  padding: 20px 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
}

.flow-no {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.flow-name {
  margin-top: 6px;
  font-size: 17px;
  font-weight: 600;
}

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

.flow-node {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-line);
  font-size: 14px;
  color: var(--color-muted);
}

.flow-more,
.standard-more,
.faq-more {
  margin-top: 22px;
}

/* 交付标准摘要 */

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

.standard-col {
  min-width: 0;
  padding: 22px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.standard-col-title {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}

.check-list,
.boundary-list {
  margin-top: 14px;
  display: grid;
  gap: 12px;
}

.check-item,
.boundary-item {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--color-text);
}

.check-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--color-primary);
  border-radius: 2px;
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

/* 常见需求场景 */

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

.scene-row {
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.scene-name {
  font-size: 17px;
  font-weight: 600;
}

.scene-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
}

.scene-way {
  margin-top: 10px;
  font-size: 15px;
  color: var(--color-primary-dark);
}

/* 常见问题摘要 */

.faq-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

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

.faq-group-title {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.faq-item {
  border-bottom: 1px solid var(--color-line);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-q::after {
  content: "+";
  flex: none;
  width: 22px;
  text-align: center;
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 600;
}

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

.faq-a {
  padding: 0 0 14px;
  font-size: 15px;
  color: var(--color-muted);
}

/* 站内栏目索引 */

.column-index {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

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

.column-link {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
}

.column-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-muted);
}

/* ==========================================================================
   pages — 服务方向页
   ========================================================================== */

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

.direction-index-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "no name link"
    "no for link";
  column-gap: 12px;
  align-items: center;
  padding: 16px 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.direction-index-item .direction-no {
  grid-area: no;
  margin-right: 0;
  align-self: center;
}

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

.direction-index-for {
  grid-area: for;
  font-size: 14px;
  color: var(--color-muted);
}

.direction-index-link {
  grid-area: link;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

.direction-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: 32px;
  align-items: start;
  padding: 30px 0;
  border-bottom: 1px solid var(--color-line);
}

.direction-block:last-of-type {
  border-bottom: none;
}

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

.direction-body .direction-name {
  display: block;
  font-size: 20px;
  font-weight: 600;
}

.direction-desc {
  margin-top: 10px;
  font-size: 16px;
  color: var(--color-muted);
  max-width: 72ch;
}

.direction-label {
  margin-top: 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.direction-body .direction-list {
  margin-top: 10px;
  display: grid;
  gap: 8px;
  border-top: none;
}

.direction-li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--color-text);
}

.direction-li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.direction-media {
  min-width: 0;
  aspect-ratio: 4 / 3;
}

/* 服务边界分组 */

.scope-group {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-line);
}

.scope-group:last-of-type {
  border-bottom: none;
}

.scope-name {
  font-size: 18px;
  font-weight: 600;
}

.scope-columns {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}

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

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

.scope-col-include .scope-col-title {
  color: var(--color-primary-dark);
}

.scope-col-exclude .scope-col-title {
  color: var(--color-accent);
}

.scope-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.scope-li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--color-text);
}

.scope-li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-line);
}

/* 方向选择建议 */

.advice-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.advice-title {
  font-size: 17px;
  font-weight: 600;
}

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

.advice-action {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.action-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--color-primary);
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.action-link:hover {
  background-color: #e8f1ee;
}

/* 相关入口（服务 / 流程 / FAQ 共用） */

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

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

.related-link {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
}

.related-note {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-muted);
}

/* ==========================================================================
   pages — 合作流程页
   ========================================================================== */

.stage-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

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

.stage-no {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.stage-name {
  margin-top: 6px;
  font-size: 17px;
  font-weight: 600;
}

.stage-summary {
  margin-top: 10px;
  font-size: 15px;
  color: var(--color-muted);
}

.stage-block {
  padding: 28px 0;
  border-bottom: 1px solid var(--color-line);
}

.stage-block:last-of-type {
  border-bottom: none;
}

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

.stage-head .stage-no {
  margin: 0;
}

.stage-body {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

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

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

.stage-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.stage-list-item {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--color-text);
}

.stage-list-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.stage-node {
  margin-top: 16px;
  padding: 14px 18px;
  background-color: #fbf3ea;
  border-left: 3px solid var(--color-accent);
  border-radius: 4px;
  font-size: 15px;
  color: var(--color-text);
}

.stage-node-label {
  color: var(--color-accent);
  margin-right: 6px;
}

.stage-figure {
  margin-top: 24px;
  aspect-ratio: 16 / 6;
}

/* 准备清单 */

.prepare-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.prepare-group {
  min-width: 0;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.prepare-group-title {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.prepare-list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.prepare-item {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--color-text);
}

.prepare-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

/* 推进卡点 */

.blocker-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.blocker-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}

.blocker-title {
  font-size: 17px;
  font-weight: 600;
}

.blocker-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
  max-width: 72ch;
}

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

.standard-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.standard-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}

.standard-name {
  font-size: 17px;
  font-weight: 600;
}

.standard-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
  max-width: 72ch;
}

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

.boundary-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.boundary-heading {
  font-size: 17px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.section-figure {
  margin-top: 24px;
  aspect-ratio: 16 / 6;
}

.rework-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.rework-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}

.rework-name {
  font-size: 17px;
  font-weight: 600;
}

.rework-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
  max-width: 72ch;
}

.scope-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}

.scope-name {
  font-size: 17px;
  font-weight: 600;
}

.scope-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
  max-width: 72ch;
}

.scope-feedback {
  margin-top: 24px;
  padding: 22px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.scope-feedback-title {
  font-size: 17px;
  font-weight: 600;
}

.scope-feedback-text {
  margin-top: 10px;
  font-size: 15px;
  color: var(--color-muted);
  max-width: 72ch;
}

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

.related-link {
  display: block;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
}

.related-link-title {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
}

.related-link-text {
  display: block;
  margin-top: 8px;
  font-size: 15px;
  color: var(--color-muted);
}

/* ==========================================================================
   pages — 常见问题页
   ========================================================================== */

.page-figure {
  margin-top: 24px;
  aspect-ratio: 16 / 6;
}

.faq-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
}

.faq-section:last-of-type {
  border-bottom: none;
}

.faq-list {
  margin-top: 20px;
  max-width: 880px;
}

.faq-section .faq-item {
  border-bottom: 1px solid var(--color-line);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 14px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: none;
  width: 24px;
  text-align: center;
  color: var(--color-primary);
  font-size: 20px;
  font-weight: 600;
}

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

.faq-answer {
  padding: 0 0 18px;
  max-width: 72ch;
}

.faq-answer p {
  font-size: 15px;
  color: var(--color-muted);
}

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

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

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

.error-main {
  display: flex;
  justify-content: center;
  padding: 64px var(--gutter) 72px;
}

.error-panel {
  width: 100%;
  max-width: 720px;
  padding: 40px 32px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  text-align: center;
}

.error-code {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
}

.error-title {
  margin-top: 12px;
  font-size: 28px;
  font-weight: 600;
}

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

.error-entries {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

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

.error-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.error-link:hover {
  border-color: var(--color-primary);
  background-color: #e8f1ee;
}

.error-hint {
  margin-top: 24px;
  font-size: 14px;
  color: var(--color-muted);
}

/* ==========================================================================
   components — 页脚
   ========================================================================== */

.footer-back {
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-back-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-back-link:hover {
  color: #a8d5c9;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  padding: 28px 0;
}

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

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
}

.footer-list {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

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

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  color: #c3d3cf;
}

.footer-link:hover {
  color: #ffffff;
}

.footer-copy {
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 13px;
  color: #9db0ac;
}

/* ==========================================================================
   responsive — 900px
   ========================================================================== */

@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 8px 20px rgba(31, 63, 56, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--gutter) 16px;
  }

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

  .nav-link {
    min-height: 48px;
    padding: 0 10px;
    border-radius: 6px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-top: 36px;
  }

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

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

  .hero-media {
    order: 2;
  }

  .hero-copy {
    order: 1;
  }

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

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

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

  .direction-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

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

  .standard-columns,
  .scope-columns,
  .boundary-columns,
  .stage-body,
  .faq-groups,
  .related-links {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

/* ==========================================================================
   responsive — 600px
   ========================================================================== */

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

  body.site-body {
    font-size: 15px;
  }

  .header-inner {
    padding: 12px var(--gutter);
  }

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

  .hero-inner {
    padding: 28px var(--gutter) 32px;
  }

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

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

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

  .content-media-primary {
    padding-bottom: 32px;
  }

  .section {
    padding: 32px 0;
  }

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

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

  .page-header {
    padding: 14px 0 22px;
  }

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

  .direction-link {
    justify-self: start;
  }

  .direction-index-item {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "no name"
      "for for"
      "link link";
    row-gap: 6px;
  }

  .direction-index-link {
    justify-self: start;
  }

  .flow-strip,
  .stage-strip,
  .advice-list,
  .prepare-groups,
  .column-index,
  .footer-columns {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-media,
  .direction-media {
    aspect-ratio: 4 / 3;
  }

  .stage-figure,
  .section-figure,
  .page-figure {
    aspect-ratio: 16 / 9;
  }

  .error-panel {
    padding: 32px 20px;
  }

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

  .footer-inner {
    padding: 32px var(--gutter) 24px;
  }
}

/* ==========================================================================
   motion — 轻量增强（不影响初始可见性）
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .flow-item,
  .scene-row,
  .column-item,
  .advice-item,
  .related-item,
  .stage-cell,
  .direction-index-item {
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  }

  .flow-item:hover,
  .scene-row:hover,
  .column-item:hover,
  .advice-item:hover,
  .related-item:hover,
  .stage-cell:hover,
  .direction-index-item:hover {
    border-color: #b9cdc7;
    box-shadow: 0 3px 10px rgba(31, 63, 56, 0.08);
    transform: translateY(-2px);
  }
}