/* ==========================================================================
   base：变量、重置、排版
   ========================================================================== */

:root {
  --c-bg: #ffffff;
  --c-bg-soft: #f5f7f8;
  --c-text: #2b2f33;
  --c-text-soft: #6b7278;
  --c-accent: #1f7a6b;
  --c-accent-2: #2f6f9e;
  --c-line: #e2e6e8;
  --c-mark: #eaf3f0;
  --radius: 6px;
  --shadow-card: 0 1px 2px rgba(43, 47, 51, 0.06);
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--c-text);
  background: var(--c-bg);
}

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

p {
  margin: 0;
}

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

dl,
dd,
dt {
  margin: 0;
}

figure {
  margin: 0;
}

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

a {
  color: var(--c-accent-2);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--c-accent);
  text-decoration: underline;
}

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

button {
  font: inherit;
  color: inherit;
}

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

/* ==========================================================================
   layout：全站骨架（页头、导航、主容器、面包屑、页标题区、页脚）
   ========================================================================== */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--c-bg);
  color: var(--c-text);
}

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

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 19px;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: 0;
  white-space: nowrap;
}

.brand::before {
  content: "";
  width: 10px;
  height: 22px;
  border-radius: 3px;
  background: var(--c-accent);
}

.brand:hover,
.brand:focus {
  color: var(--c-accent);
  text-decoration: none;
}

.site-nav {
  display: block;
}

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

.nav-item {
  position: relative;
}

.nav-item > a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--c-text);
  border-radius: var(--radius);
  white-space: nowrap;
}

.nav-item > a:hover,
.nav-item > a:focus {
  background: var(--c-bg-soft);
  color: var(--c-accent);
  text-decoration: none;
}

.nav-item > a.is-current {
  color: var(--c-accent);
  font-weight: 600;
  background: var(--c-mark);
}

.nav-item-cta > a {
  margin-left: 6px;
  padding: 0 16px;
  background: var(--c-accent);
  color: #ffffff;
}

.nav-item-cta > a:hover,
.nav-item-cta > a:focus {
  background: #1a6559;
  color: #ffffff;
}

.nav-item-cta > a.is-current {
  background: #1a6559;
  color: #ffffff;
}

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

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-main {
  flex: 1 0 auto;
  display: block;
  width: 100%;
}

.home-main {
  padding-bottom: 8px;
}

.inner-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px 56px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 18px 0 0;
  font-size: 14px;
  color: var(--c-text-soft);
}

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

.breadcrumb a:hover,
.breadcrumb a:focus {
  color: var(--c-accent);
}

.breadcrumb-sep {
  color: #b8bfc4;
}

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

.page-header {
  padding: 20px 0 28px;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-text);
}

.page-description {
  margin-top: 12px;
  max-width: 780px;
  font-size: 16px;
  color: var(--c-text-soft);
}

.page-meta,
.page-updated {
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.section {
  margin-bottom: 48px;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
}

.section-desc,
.section-lead,
.section-intro {
  margin-top: 10px;
  max-width: 820px;
  font-size: 16px;
  color: var(--c-text-soft);
}

.section-more {
  margin-top: 20px;
  font-size: 15px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 600;
}

.section-figure {
  margin: 24px 0 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-soft);
}

.section-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.section-figure figcaption {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--c-text-soft);
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
}

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

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px 24px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2.2fr);
  gap: 32px 40px;
}

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

.footer-brand {
  font-size: 17px;
  font-weight: 600;
  color: var(--c-text);
}

.footer-desc {
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 24px 20px;
  min-width: 0;
}

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

.footer-group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: 10px;
}

.footer-group ul {
  display: block;
}

.footer-group li + li {
  margin-top: 4px;
}

.footer-group a {
  display: inline-block;
  padding: 3px 0;
  font-size: 14px;
  color: var(--c-text-soft);
  line-height: 1.6;
}

.footer-group a:hover,
.footer-group a:focus {
  color: var(--c-accent);
}

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  font-size: 14px;
  color: var(--c-text-soft);
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--c-text-soft);
}

/* ==========================================================================
   components：按钮、编号标记、链接、表格、折叠问答
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: #1a6559;
  color: #ffffff;
  text-decoration: none;
}

.btn-ghost {
  background: var(--c-bg);
  color: var(--c-accent);
  border-color: #bcd8d2;
}

.btn-ghost:hover,
.btn-ghost:focus {
  background: var(--c-mark);
  color: var(--c-accent);
  text-decoration: none;
}

.direction-index,
.stage-index,
.timeline-index,
.scenario-index,
.talk-index,
.path-index,
.aside-step-index,
.prepare-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--c-accent);
  background: var(--c-mark);
  border-radius: 4px;
}

.direction-link,
.action-link,
.aside-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
}

.action-link-primary {
  padding: 0 18px;
  border-radius: var(--radius);
  background: var(--c-accent);
  color: #ffffff;
}

.action-link-primary:hover,
.action-link-primary:focus {
  background: #1a6559;
  color: #ffffff;
  text-decoration: none;
}

.fit-table {
  margin-top: 20px;
  font-size: 15px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.fit-caption {
  caption-side: top;
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  color: var(--c-text-soft);
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-line);
}

.fit-table th,
.fit-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--c-line);
  line-height: 1.7;
}

.fit-table thead th {
  background: var(--c-bg-soft);
  font-weight: 600;
  color: var(--c-text);
  white-space: nowrap;
}

.fit-table tbody th {
  font-weight: 600;
  color: var(--c-text);
  background: #fbfcfc;
  width: 22%;
}

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

/* ==========================================================================
   pages：首页
   ========================================================================== */

.hero {
  background: var(--c-bg-soft);
  border-bottom: 1px solid var(--c-line);
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 20px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

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

.hero-eyebrow {
  display: inline-block;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
  background: var(--c-mark);
  border-radius: 4px;
}

.hero-title {
  margin-top: 16px;
  font-size: 34px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--c-text);
}

.hero-desc {
  margin-top: 16px;
  font-size: 16px;
  color: var(--c-text);
}

.hero-audience {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 3px solid var(--c-accent);
  font-size: 15px;
  color: var(--c-text-soft);
}

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

.hero-media {
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg);
  box-shadow: var(--shadow-card);
}

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-media figcaption {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--c-text-soft);
  border-top: 1px solid var(--c-line);
}

.home-main > .section {
  max-width: 1080px;
  margin: 0 auto 48px;
  padding: 0 20px;
}

.section-head {
  margin-bottom: 24px;
}

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

.direction-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 8px 20px;
  align-items: start;
  padding: 20px 0 20px 14px;
  border-bottom: 1px solid var(--c-line);
  border-left: 3px solid transparent;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.direction-item:hover {
  border-left-color: var(--c-accent);
  background: #fbfcfc;
}

.direction-list .direction-index {
  width: 40px;
  height: 40px;
  font-size: 15px;
}

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

.direction-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-text);
}

.direction-summary {
  margin-top: 6px;
  font-size: 15px;
  color: var(--c-text);
}

.direction-fit {
  margin-top: 6px;
  font-size: 14px;
  color: var(--c-text-soft);
}

.direction-link {
  align-self: center;
  white-space: nowrap;
}

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

.stage-item {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px 18px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.stage-index {
  width: 34px;
  height: 34px;
  font-size: 14px;
}

.stage-name {
  margin-top: 12px;
  font-size: 18px;
  font-weight: 600;
}

.stage-fields {
  margin-top: 12px;
}

.stage-fields dt {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-accent);
}

.stage-fields dd {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--c-text);
}

.stage-fields dd:last-child {
  margin-bottom: 0;
}

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

.scenario-col {
  min-width: 0;
  padding: 20px 18px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent-2);
  border-radius: var(--radius);
  background: var(--c-bg);
}

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

.scenario-need {
  margin-top: 10px;
  font-size: 15px;
  color: var(--c-text);
}

.scenario-advice {
  margin-top: 10px;
  font-size: 14px;
  color: var(--c-text-soft);
}

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

.faq-group {
  min-width: 0;
  padding: 18px;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
}

.faq-group-title {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-line);
}

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

.faq-group-list li + li {
  margin-top: 4px;
}

.faq-group-list a {
  display: block;
  min-height: 44px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--c-text);
  line-height: 1.6;
}

.faq-group-list a:hover,
.faq-group-list a:focus {
  color: var(--c-accent);
}

.prepare-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

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

.prepare-item {
  padding: 14px 16px;
  border-left: 3px solid var(--c-accent);
  background: var(--c-bg-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.prepare-item + .prepare-item {
  margin-top: 12px;
}

.prepare-name {
  font-size: 16px;
  font-weight: 600;
}

.prepare-text {
  margin-top: 6px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.prepare-media {
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-soft);
}

.prepare-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.prepare-media figcaption {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--c-text-soft);
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
}

/* ==========================================================================
   pages：服务能力
   ========================================================================== */

.section-directions .direction-item,
.section-scope .scope-item {
  min-width: 0;
}

.page-service-capability .direction-item {
  display: block;
  padding: 28px 0;
  border-bottom: 1px solid var(--c-line);
  border-left: 0;
  background: transparent;
}

.page-service-capability .direction-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-service-capability .direction-index {
  width: 40px;
  height: 40px;
  font-size: 15px;
  flex: none;
}

.page-service-capability .direction-name {
  font-size: 20px;
}

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

.direction-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.direction-fields {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 6px 20px;
  margin-top: 16px;
}

.direction-fields dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent);
}

.direction-fields dd {
  font-size: 15px;
  color: var(--c-text);
}

.section-scope {
  margin-top: 48px;
}

.scope-item {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

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

.scope-covered li,
.scope-excluded li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
}

.scope-covered li + li,
.scope-excluded li + li {
  margin-top: 6px;
}

.scope-covered li::before,
.scope-excluded li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
}

.scope-covered li::before {
  background: var(--c-accent);
}

.scope-excluded li::before {
  background: #c3cacd;
}

.scope-excluded li {
  color: var(--c-text-soft);
}

.section-fit {
  margin-top: 48px;
}

.section-choose {
  margin-top: 48px;
}

.choose-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.choose-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-accent);
  border-radius: var(--radius);
  background: var(--c-bg-soft);
}

.choose-heading {
  font-size: 16px;
  font-weight: 600;
}

.choose-item p {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

/* ==========================================================================
   pages：交付流程
   ========================================================================== */

.delivery-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
  position: sticky;
  top: 84px;
}

.aside-block {
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg-soft);
}

.aside-block + .aside-block {
  margin-top: 20px;
}

.aside-title {
  font-size: 16px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-line);
}

.aside-steps {
  margin-top: 12px;
}

.aside-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text);
}

.aside-step + .aside-step {
  margin-top: 10px;
}

.aside-step-index {
  flex: none;
  width: 22px;
  height: 22px;
  font-size: 12px;
  margin-top: 2px;
}

.aside-block-cta {
  background: var(--c-mark);
  border-color: #cfe4de;
}

.aside-text {
  margin-top: 12px;
  font-size: 14px;
  color: var(--c-text);
}

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

.timeline-list {
  position: relative;
  margin-top: 24px;
  padding-left: 30px;
  border-left: 2px solid var(--c-line);
}

.timeline-item {
  position: relative;
  padding: 0 0 26px 0;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-index {
  position: absolute;
  left: -46px;
  top: 0;
  width: 32px;
  height: 32px;
  font-size: 14px;
  border: 2px solid var(--c-bg);
  box-shadow: 0 0 0 1px var(--c-line);
}

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

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

.timeline-note {
  margin-top: 6px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-io,
.section-acceptance,
.section-handoff,
.section-related {
  margin-top: 48px;
}

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

.io-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg);
  box-shadow: var(--shadow-card);
}

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

.io-fields {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 6px 14px;
  margin-top: 12px;
}

.io-fields dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent);
}

.io-fields dd {
  font-size: 15px;
  color: var(--c-text);
}

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

.acceptance-item {
  min-width: 0;
  padding: 18px;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  border-left: 3px solid var(--c-accent);
}

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

.acceptance-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

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

.acceptance-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent);
  margin-bottom: 8px;
}

.acceptance-points li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text);
}

.acceptance-points li + li {
  margin-top: 6px;
}

.acceptance-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent-2);
}

.handoff-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.handoff-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.handoff-name {
  font-size: 16px;
  font-weight: 600;
}

.handoff-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.related-item a {
  display: block;
  min-height: 44px;
  padding: 12px 16px;
  font-size: 15px;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  border-left: 3px solid var(--c-accent-2);
}

.related-item a:hover,
.related-item a:focus {
  background: var(--c-mark);
  color: var(--c-accent);
}

/* ==========================================================================
   pages：适用场景
   ========================================================================== */

.scenario-group-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.scenario-group {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg-soft);
}

.scenario-group .scenario-index {
  width: 32px;
  height: 32px;
  font-size: 14px;
}

.scenario-group .scenario-name {
  margin-top: 12px;
  font-size: 17px;
}

.scenario-group .scenario-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-scenario-detail {
  margin-top: 48px;
}

.scenario-detail-list {
  margin-top: 24px;
}

.scenario-detail {
  padding: 24px 0;
  border-bottom: 1px solid var(--c-line);
}

.scenario-detail:first-child {
  border-top: 1px solid var(--c-line);
}

.scenario-detail-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.scenario-detail-head .scenario-index {
  width: 36px;
  height: 36px;
  font-size: 14px;
  flex: none;
}

.scenario-detail-head .scenario-name {
  font-size: 19px;
}

.scenario-detail-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 16px;
}

.scenario-column {
  min-width: 0;
  padding: 16px 18px;
  border-radius: var(--radius);
  background: var(--c-bg-soft);
}

.scenario-column-judge {
  background: var(--c-mark);
}

.scenario-column-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-accent);
  margin-bottom: 10px;
}

.scenario-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-text);
}

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

.scenario-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--c-accent);
}

.section-scenario-map {
  margin-top: 48px;
}

.scenario-map-table {
  margin-top: 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.scenario-map-head,
.scenario-map-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1fr);
}

.scenario-map-head {
  background: var(--c-bg-soft);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text);
}

.scenario-map-row {
  border-top: 1px solid var(--c-line);
}

.scenario-map-cell {
  min-width: 0;
  padding: 12px 16px;
  font-size: 15px;
  line-height: 1.7;
  border-left: 1px solid var(--c-line);
}

.scenario-map-cell:first-child {
  border-left: 0;
  font-weight: 600;
}

.section-next-step {
  margin-top: 48px;
}

.next-step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.next-step-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-accent-2);
  border-radius: var(--radius);
}

.next-step-name {
  font-size: 16px;
  font-weight: 600;
}

.next-step-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-not-applicable {
  margin-top: 48px;
}

.not-applicable-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.not-applicable-item {
  min-width: 0;
  padding: 18px;
  background: var(--c-bg-soft);
  border-left: 3px solid #c3cacd;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.not-applicable-name {
  font-size: 16px;
  font-weight: 600;
}

.not-applicable-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

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

.section-note a {
  font-weight: 600;
}

/* ==========================================================================
   pages：常见问题
   ========================================================================== */

.faq-intro {
  margin-bottom: 40px;
}

.faq-figure {
  margin-top: 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-soft);
}

.faq-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.faq-figure figcaption {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--c-text-soft);
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-group {
  margin-bottom: 40px;
  padding: 0;
  background: transparent;
  border-radius: 0;
}

.page-faq .faq-group .section-desc {
  margin-bottom: 16px;
}

.faq-item {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg);
}

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

.faq-item[open] {
  border-color: #bcd8d2;
  background: #fcfdfd;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 12px 18px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: none;
  font-size: 20px;
  font-weight: 400;
  color: var(--c-accent);
  line-height: 1;
}

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

.faq-question:hover,
.faq-question:focus {
  color: var(--c-accent);
}

.faq-answer {
  padding: 0 18px 16px;
}

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

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

.faq-next {
  margin-top: 48px;
  padding: 24px;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
}

.faq-next-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.faq-next-item a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--c-text);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.faq-next-item a:hover,
.faq-next-item a:focus {
  color: var(--c-accent);
  border-color: #bcd8d2;
}

/* ==========================================================================
   pages：合作对接
   ========================================================================== */

.section-media {
  margin-top: 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-soft);
}

.section-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

.media-caption {
  padding: 10px 16px;
  font-size: 14px;
  color: var(--c-text-soft);
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
}

.page-cooperation .prepare-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.page-cooperation .prepare-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px;
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-cooperation .prepare-item + .prepare-item {
  margin-top: 0;
}

.prepare-mark {
  flex: none;
  width: 24px;
  height: 24px;
  font-size: 13px;
  margin-top: 2px;
}

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

.talk-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.talk-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.talk-index {
  flex: none;
  width: 26px;
  height: 26px;
  font-size: 13px;
  margin-top: 2px;
}

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

.talk-name {
  font-size: 16px;
  font-weight: 600;
}

.talk-text {
  margin-top: 6px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.path-node {
  position: relative;
  min-width: 0;
  padding: 20px 18px;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  border-top: 3px solid var(--c-accent);
}

.path-index {
  width: 32px;
  height: 32px;
  font-size: 14px;
}

.path-name {
  margin-top: 12px;
  font-size: 17px;
  font-weight: 600;
}

.path-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.pitfall-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.pitfall-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent-2);
  border-radius: var(--radius);
}

.pitfall-name {
  font-size: 16px;
  font-weight: 600;
}

.pitfall-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

.section-next {
  margin-top: 48px;
}

.next-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.next-card {
  min-width: 0;
  padding: 20px 18px;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
}

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

.next-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--c-text-soft);
}

/* ==========================================================================
   pages：404
   ========================================================================== */

.error-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 20px 64px;
}

.error-panel {
  max-width: 720px;
}

.error-title {
  font-size: 32px;
  font-weight: 600;
}

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

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

.error-guide {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--c-line);
}

.error-guide-title {
  font-size: 20px;
  font-weight: 600;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.error-link-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  border-left: 3px solid var(--c-accent);
}

.error-link-list a:hover,
.error-link-list a:focus {
  color: var(--c-accent);
  background: var(--c-mark);
}

/* ==========================================================================
   responsive：1024px 断点
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 44px 20px;
  }

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

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

  .scenario-columns,
  .faq-groups,
  .choose-list,
  .handoff-list,
  .next-step-list,
  .not-applicable-list,
  .path-list,
  .pitfall-list,
  .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .faq-next-list,
  .error-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .layout-aside {
    position: static;
  }
}

/* ==========================================================================
   responsive：768px 断点
   ========================================================================== */

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 8px 16px;
    min-height: 60px;
    gap: 8px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 0 100%;
    width: 100%;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 6px 0 12px;
  }

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

  .nav-item > a {
    width: 100%;
    min-height: 48px;
    padding: 0 12px;
    border-radius: 0;
  }

  .nav-item-cta > a {
    margin: 6px 0 0;
    justify-content: center;
    border-radius: var(--radius);
  }

  .inner-main {
    padding: 0 16px 44px;
  }

  .page-header {
    padding: 16px 0 22px;
    margin-bottom: 32px;
  }

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

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

  .section {
    margin-bottom: 36px;
  }

  .home-main > .section {
    margin-bottom: 36px;
    padding: 0 16px;
  }

  .hero-inner {
    padding: 32px 16px;
  }

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

  .direction-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 6px 14px;
    padding: 18px 0 18px 12px;
  }

  .direction-link {
    grid-column: 2;
    justify-self: start;
  }

  .stage-list,
  .scenario-columns,
  .faq-groups,
  .choose-list,
  .handoff-list,
  .next-step-list,
  .not-applicable-list,
  .path-list,
  .pitfall-list,
  .next-grid,
  .scenario-group-list,
  .io-grid,
  .acceptance-list,
  .related-links,
  .talk-list,
  .faq-next-list,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .prepare-layout,
  .page-cooperation .prepare-list,
  .scenario-detail-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

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

  .direction-fields {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .direction-fields dd {
    margin-bottom: 8px;
  }

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

  .io-fields {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .timeline-list {
    padding-left: 22px;
  }

  .timeline-index {
    left: -34px;
    width: 26px;
    height: 26px;
    font-size: 12px;
  }

  .scenario-map-head,
  .scenario-map-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .scenario-map-cell {
    border-left: 0;
    border-top: 1px solid var(--c-line);
  }

  .scenario-map-cell:first-child {
    border-top: 0;
  }

  .scenario-map-head .scenario-map-cell:not(:first-child) {
    display: none;
  }

  .footer-inner {
    padding: 32px 16px 20px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 16px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .fit-table thead th {
    white-space: normal;
  }

  .fit-table tbody th {
    width: auto;
  }

  .error-main {
    padding: 40px 16px 48px;
  }

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

/* ==========================================================================
   responsive：420px 断点
   ========================================================================== */

@media (max-width: 420px) {
  body {
    font-size: 15px;
  }

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

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

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

  .btn,
  .action-link-primary {
    width: 100%;
  }

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

/* ==========================================================================
   motion：尊重用户偏好，仅作轻量增强
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .direction-item,
  .stage-item,
  .scenario-col,
  .io-card,
  .acceptance-item,
  .scenario-detail,
  .talk-item,
  .path-node,
  .pitfall-item,
  .next-card,
  .next-step-item,
  .not-applicable-item,
  .choose-item,
  .handoff-item,
  .faq-item,
  .prepare-item,
  .related-item a {
    transition: background-color 0.2s ease, border-color 0.2s ease,
      box-shadow 0.2s ease;
  }

  .stage-item:hover,
  .scenario-col:hover,
  .io-card:hover,
  .acceptance-item:hover,
  .talk-item:hover,
  .pitfall-item:hover,
  .next-card:hover,
  .choose-item:hover,
  .handoff-item:hover,
  .next-step-item:hover {
    box-shadow: 0 2px 8px rgba(43, 47, 51, 0.08);
  }
}