/* ==========================================================================
   酷漫屋 htaln.cn — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base — 变量、重置、排版
   -------------------------------------------------------------------------- */
:root {
  --color-primary: #1f3a63;
  --color-primary-dark: #16294a;
  --color-text: #3c4552;
  --color-text-soft: #5c6675;
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-accent: #c2703a;
  --color-line: #d9dee6;
  --color-line-soft: #e7ebf1;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 2px rgba(31, 58, 99, 0.05), 0 8px 20px rgba(31, 58, 99, 0.05);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "Courier New", monospace;
  --container: 1140px;
  --gutter: 24px;
}

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

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

.site-body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  color: var(--color-text-soft);
  font-size: 13px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   layout — 页头、主导航、主容器、页脚骨架
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 0 0 auto;
  color: var(--color-primary);
}

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.brand-tagline {
  color: var(--color-text-soft);
  font-size: 12px;
  line-height: 1.5;
}

.site-nav {
  margin-left: auto;
}

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

.nav-item {
  flex: 0 0 auto;
}

.nav-link {
  display: block;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.5;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

.nav-link.is-current {
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0 10px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

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

.header-cta {
  flex: 0 0 auto;
  padding: 9px 18px;
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  white-space: nowrap;
}

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

.site-main {
  display: block;
  width: 100%;
}

.section {
  padding: 56px 0;
}

.section-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section-head {
  max-width: 760px;
  margin-bottom: 32px;
}

.section-title {
  font-size: 26px;
  line-height: 1.4;
}

.section-desc,
.section-lead,
.section-intro {
  margin-top: 12px;
  color: var(--color-text-soft);
  font-size: 15px;
  line-height: 1.85;
}

.section-more {
  margin-top: 26px;
  font-size: 15px;
}

.section-more a {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--color-line);
  font-weight: 700;
}

.section-footnote {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line-soft);
  color: var(--color-text-soft);
  font-size: 15px;
}

.section-footnote a {
  font-weight: 700;
}

/* 内页统一骨架 */
.inner-main {
  display: block;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  color: var(--color-text-soft);
  font-size: 13px;
  line-height: 1.6;
}

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

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

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

.breadcrumb-current {
  color: var(--color-primary);
  font-weight: 700;
}

.page-header {
  padding: 20px 0 30px;
  border-bottom: 1px solid var(--color-line-soft);
}

.page-title {
  font-size: 30px;
  line-height: 1.4;
}

.page-description {
  max-width: 760px;
  margin-top: 14px;
  color: var(--color-text-soft);
  font-size: 16px;
  line-height: 1.85;
}

.site-footer {
  margin-top: 40px;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 40px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 44px var(--gutter) 32px;
}

.footer-brand {
  max-width: 420px;
}

.footer-name {
  color: var(--color-primary);
  font-size: 18px;
  font-weight: 700;
}

.footer-desc {
  margin-top: 12px;
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.85;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.footer-heading {
  margin: 0 0 12px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

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

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

.footer-list a {
  display: inline-block;
  padding: 2px 0;
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.7;
}

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

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

.footer-copy {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--gutter);
  color: var(--color-text-soft);
  font-size: 13px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   components — 通用内容组件
   -------------------------------------------------------------------------- */
.content-media,
.direction-figure,
.delivery-figure,
.faq-figure,
.stage-media,
.hero-figure {
  overflow: hidden;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
}

.content-media img,
.direction-figure img,
.delivery-figure img,
.faq-figure img,
.stage-media img,
.hero-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  background-color: var(--color-bg);
}

.content-media figcaption,
.direction-figure figcaption,
.delivery-figure figcaption,
.faq-figure figcaption,
.stage-media figcaption,
.hero-figure figcaption {
  padding: 0 16px 14px;
}

/* 折叠问答（首页速览 + FAQ 页共用外观） */
.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.faq-question {
  position: relative;
  display: block;
  padding: 15px 46px 15px 18px;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
}

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

.faq-item[open] .faq-question {
  border-bottom: 1px solid var(--color-line-soft);
}

.faq-answer {
  padding: 14px 18px 18px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

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

/* 编号徽标（等宽字体） */
.direction-index,
.direction-no,
.timeline-index,
.overview-num,
.stage-num,
.step-index {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: normal;
}

/* --------------------------------------------------------------------------
   pages — 首页
   -------------------------------------------------------------------------- */
.home-main {
  display: block;
}

.hero-section {
  padding: 52px 0 44px;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-line-soft);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

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

.hero-eyebrow {
  display: inline-block;
  padding: 5px 12px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-size: 13px;
  line-height: 1.5;
}

.hero-title {
  margin-top: 18px;
  font-size: 34px;
  line-height: 1.38;
}

.hero-lead {
  margin-top: 16px;
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.9;
}

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

.hero-link {
  display: inline-block;
  padding: 10px 18px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.hero-link:hover {
  background-color: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

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

.hero-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.hero-step {
  padding: 12px 12px 14px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-md);
}

.hero-step .step-index {
  display: block;
  color: var(--color-accent);
  font-size: 13px;
}

.hero-step .step-name {
  display: block;
  margin-top: 6px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.content-media-primary {
  width: 100%;
  max-width: var(--container);
  margin: 40px auto 0;
}

.content-media-primary img {
  aspect-ratio: 21 / 9;
}

/* 服务方向总览 */
.directions-section {
  background-color: var(--color-bg);
}

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

.direction-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 22px 4px;
  border-bottom: 1px solid var(--color-line);
}

.direction-item .direction-index {
  color: var(--color-accent);
  font-size: 18px;
}

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

.direction-name {
  font-size: 19px;
  line-height: 1.5;
}

.direction-scope {
  margin-top: 8px;
  color: var(--color-text-soft);
  font-size: 15px;
  line-height: 1.8;
}

.direction-link {
  padding: 8px 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

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

/* 协作流程时间线 */
.timeline-section {
  background-color: var(--color-surface);
}

.timeline {
  position: relative;
  padding: 8px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background-color: var(--color-line);
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1fr);
  align-items: center;
}

.timeline-item + .timeline-item {
  margin-top: 26px;
}

.timeline-marker {
  grid-column: 2;
  display: flex;
  justify-content: center;
}

.timeline-index {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-accent);
  font-size: 14px;
}

.timeline-card {
  grid-column: 3;
  padding: 20px 22px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
}

.timeline-item:nth-child(even) .timeline-card {
  grid-column: 1;
  grid-row: 1;
}

.timeline-stage {
  font-size: 18px;
  line-height: 1.5;
}

.timeline-action {
  margin-top: 10px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

.timeline-output {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-line);
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.8;
}

/* 交付标准与边界摘要 */
.boundary-section {
  background-color: var(--color-bg);
}

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

.boundary-col {
  padding: 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
}

.boundary-include {
  border-top: 3px solid var(--color-primary);
}

.boundary-exclude {
  border-top: 3px solid var(--color-accent);
}

.boundary-heading {
  font-size: 17px;
  line-height: 1.5;
}

.boundary-list {
  margin-top: 16px;
}

.boundary-list li {
  position: relative;
  padding-left: 20px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

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

.boundary-list li::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-line);
}

.boundary-include .boundary-list li::before {
  background-color: var(--color-primary);
}

.boundary-exclude .boundary-list li::before {
  background-color: var(--color-accent);
}

/* 常见问题速览 */
.faq-preview-section {
  background-color: var(--color-surface);
}

.faq-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

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

.faq-group-title {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
  font-size: 16px;
  line-height: 1.5;
}

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

/* 对接准备入口 */
.prepare-section {
  background-color: var(--color-bg);
}

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

.prepare-col {
  padding: 26px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
}

.prepare-heading {
  font-size: 17px;
  line-height: 1.5;
}

.checklist {
  margin-top: 16px;
}

.checklist-item {
  position: relative;
  padding-left: 28px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

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

.checklist-item::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 14px;
  height: 14px;
  border: 1px solid var(--color-primary);
  border-radius: 3px;
}

.prepare-text {
  margin-top: 16px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

.prepare-links {
  margin-top: 14px;
}

.prepare-links li + li {
  margin-top: 8px;
}

.prepare-links a {
  display: inline-block;
  padding: 4px 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 15px;
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   pages — 内页：服务方向
   -------------------------------------------------------------------------- */
.direction-index {
  padding-top: 40px;
}

.direction-index-list {
  margin-top: 26px;
  border-top: 1px solid var(--color-line);
}

.direction-index-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding: 18px 4px;
  border-bottom: 1px solid var(--color-line);
}

.direction-index-item .direction-no {
  color: var(--color-accent);
  font-size: 16px;
}

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

.direction-index-name {
  font-size: 17px;
  line-height: 1.5;
}

.direction-index-scope {
  margin-top: 6px;
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.8;
}

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

.direction-block {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  margin-top: 32px;
  padding: 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
}

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

.direction-text .direction-name {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 21px;
}

.direction-text .direction-no {
  color: var(--color-accent);
  font-size: 15px;
}

.direction-desc {
  margin-top: 12px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.9;
}

.direction-subtitle {
  margin-top: 22px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.direction-points,
.direction-conditions {
  margin-top: 10px;
}

.direction-points li,
.direction-conditions li {
  position: relative;
  padding-left: 20px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

.direction-points li + li,
.direction-conditions li + li {
  margin-top: 8px;
}

.direction-points li::before,
.direction-conditions li::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.direction-conditions li::before {
  background-color: var(--color-accent);
}

.direction-fit {
  margin-top: 10px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

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

.scope-exclude {
  margin-top: 8px;
  padding: 28px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
}

.exclude-list {
  margin-top: 18px;
}

.exclude-item {
  position: relative;
  padding-left: 22px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

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

.exclude-item::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 2px;
  width: 8px;
  height: 2px;
  background-color: var(--color-accent);
}

.scope-note {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--color-line-soft);
  color: var(--color-text-soft);
  font-size: 15px;
}

.scope-note a {
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   pages — 内页：协作流程
   -------------------------------------------------------------------------- */
.workflow-overview {
  padding: 40px 0 0;
}

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

.overview-card {
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.overview-card .overview-num {
  display: block;
  color: var(--color-accent);
  font-size: 14px;
}

.overview-name {
  margin-top: 10px;
  font-size: 17px;
  line-height: 1.5;
}

.overview-goal {
  margin-top: 8px;
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.8;
}

.workflow-detail {
  padding: 48px 0 0;
}

.stage-block {
  margin-top: 28px;
  padding: 26px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
}

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

.stage-head .stage-num {
  color: var(--color-accent);
  font-size: 15px;
}

.stage-name {
  font-size: 20px;
  line-height: 1.5;
}

.stage-body {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  margin-top: 20px;
}

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

.stage-field + .stage-field {
  margin-top: 20px;
}

.field-label {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.stage-field p {
  margin-top: 8px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

.stage-media img {
  aspect-ratio: 4 / 3;
}

.workflow-checkpoints {
  padding: 48px 0 0;
}

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

.checkpoint-item {
  padding: 20px 4px;
  border-bottom: 1px solid var(--color-line);
}

.checkpoint-name {
  font-size: 17px;
  line-height: 1.5;
}

.checkpoint-desc {
  margin-top: 8px;
  color: var(--color-text-soft);
  font-size: 15px;
  line-height: 1.85;
}

/* --------------------------------------------------------------------------
   pages — 内页：交付标准
   -------------------------------------------------------------------------- */
.delivery-list {
  padding: 40px 0 0;
}

.delivery-items {
  margin-top: 26px;
  border-top: 1px solid var(--color-line);
}

.delivery-item {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) 120px;
  gap: 20px;
  align-items: center;
  padding: 18px 4px;
  border-bottom: 1px solid var(--color-line);
}

.delivery-name {
  color: var(--color-primary);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
}

.delivery-form {
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.7;
}

.delivery-stage {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  text-align: right;
}

.delivery-note {
  margin-top: 18px;
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.8;
}

.delivery-figure {
  width: 100%;
  max-width: var(--container);
  margin: 36px auto 0;
}

.delivery-figure img {
  aspect-ratio: 21 / 9;
}

.acceptance {
  padding: 48px 0 0;
}

.acceptance-block {
  margin-top: 20px;
  padding: 22px 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.acceptance-heading {
  font-size: 17px;
  line-height: 1.5;
}

.acceptance-block p {
  margin-top: 10px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

.out-of-scope {
  padding: 48px 0 0;
}

.out-of-scope-list {
  margin-top: 24px;
  border-top: 1px solid var(--color-line);
}

.out-of-scope-item {
  position: relative;
  padding: 16px 4px 16px 24px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.85;
}

.out-of-scope-item::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 4px;
  width: 8px;
  height: 2px;
  background-color: var(--color-accent);
}

.out-of-scope-note {
  margin-top: 20px;
  color: var(--color-text-soft);
  font-size: 15px;
}

.out-of-scope-note a {
  font-weight: 700;
}

.related-pages {
  padding: 48px 0 0;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

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

.related-item a {
  display: block;
  padding: 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-lg);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
}

.related-item a:hover {
  background-color: var(--color-bg);
  border-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   pages — 内页：常见问题
   -------------------------------------------------------------------------- */
.faq-nav-section {
  padding: 40px 0 0;
}

.faq-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

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

.faq-nav-link {
  display: block;
  padding: 10px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.faq-nav-link:hover {
  background-color: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.faq-group {
  padding: 48px 0 0;
}

.faq-group .section-desc {
  max-width: 760px;
}

.faq-group .faq-figure {
  margin-top: 24px;
}

.faq-figure img {
  aspect-ratio: 21 / 9;
}

.faq-list {
  margin-top: 24px;
}

.faq-group .faq-item {
  margin-top: 0;
}

/* --------------------------------------------------------------------------
   pages — 404
   -------------------------------------------------------------------------- */
.error-main {
  display: block;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.error-block {
  max-width: 720px;
  margin: 56px auto;
  padding: 40px 32px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line-soft);
  border-top: 3px solid var(--color-accent);
  border-radius: var(--radius-lg);
  text-align: center;
}

.error-code {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
}

.error-block h1 {
  margin-top: 12px;
  font-size: 24px;
  line-height: 1.5;
}

.error-text {
  margin-top: 14px;
  color: var(--color-text-soft);
  font-size: 15px;
  line-height: 1.85;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 26px;
}

.error-links a {
  display: inline-block;
  padding: 10px 18px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.error-links a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.error-tip {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--color-line-soft);
  color: var(--color-text-soft);
  font-size: 14px;
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   responsive — 平板
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .hero-copy {
    max-width: 100%;
  }

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

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

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

  .direction-figure img,
  .stage-media img {
    aspect-ratio: 16 / 9;
  }
}

/* --------------------------------------------------------------------------
   responsive — 手机
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --gutter: 16px;
  }

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

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

  .brand-tagline {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    order: 3;
    flex: 1 0 100%;
    margin-left: 0;
  }

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

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

  .nav-link {
    padding: 12px 10px;
    font-size: 15px;
  }

  .nav-link.is-current {
    background-color: var(--color-bg);
    box-shadow: none;
  }

  .header-cta {
    margin-left: auto;
    padding: 9px 14px;
    font-size: 13px;
  }

  .hero-section {
    padding: 34px 0 32px;
  }

  .hero-title {
    font-size: 25px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-links {
    flex-direction: column;
    gap: 10px;
  }

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

  .hero-steps {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }

  .hero-step {
    flex: 0 0 132px;
  }

  .content-media-primary {
    margin-top: 28px;
  }

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

  .section {
    padding: 40px 0;
  }

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

  .page-header {
    padding: 16px 0 22px;
  }

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

  .page-description {
    font-size: 15px;
  }

  .direction-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
  }

  .direction-link {
    grid-column: 2;
    justify-self: start;
    margin-top: 4px;
  }

  .timeline::before {
    left: 19px;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    grid-template-columns: 40px minmax(0, 1fr);
    align-items: start;
  }

  .timeline-marker,
  .timeline-item:nth-child(even) .timeline-card {
    grid-column: auto;
    grid-row: auto;
  }

  .timeline-marker {
    justify-content: flex-start;
  }

  .timeline-index {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

  .timeline-card {
    grid-column: 2;
    padding: 16px 16px 18px;
  }

  .boundary-columns,
  .prepare-columns,
  .faq-groups,
  .related-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .boundary-col,
  .prepare-col {
    padding: 20px;
  }

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

  .direction-block {
    gap: 22px;
    margin-top: 24px;
    padding: 20px;
  }

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

  .scope-exclude {
    padding: 20px;
  }

  .overview-list {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }

  .overview-card {
    flex: 0 0 200px;
  }

  .stage-block {
    margin-top: 22px;
    padding: 20px;
  }

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

  .stage-body {
    gap: 22px;
  }

  .delivery-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 16px 4px;
  }

  .delivery-stage {
    text-align: left;
  }

  .acceptance-block {
    padding: 18px 20px;
  }

  .out-of-scope-item::before {
    top: 24px;
  }

  .faq-nav-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }

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

  .faq-question {
    padding: 14px 42px 14px 16px;
    font-size: 15px;
  }

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

  .error-block {
    margin: 36px auto;
    padding: 28px 20px;
  }

  .error-code {
    font-size: 32px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px var(--gutter) 24px;
  }

  .footer-brand {
    max-width: 100%;
  }
}

@media (max-width: 400px) {
  .hero-title {
    font-size: 23px;
  }

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

  .header-cta {
    padding: 8px 12px;
  }
}