/* ==========================================================================
   base / 基础变量与全局重置
   ========================================================================== */

:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --primary: #1e3a5f;
  --accent: #c8a35a;
  --text: #1f2933;
  --muted: #66727f;
  --border: #dfe5ec;
  --danger: #b3261e;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 2px rgba(30, 58, 95, 0.06);
  --shadow-md: 0 4px 12px rgba(30, 58, 95, 0.08);
  --shadow-lg: 0 8px 24px rgba(30, 58, 95, 0.1);
  --container: 1200px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent);
}

ul,
ol {
  list-style-position: inside;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--primary);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  line-height: 1.7;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   layout / 全站布局骨架
   ========================================================================== */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

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

.nav-item {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-item:hover {
  color: var(--primary);
  background-color: rgba(30, 58, 95, 0.06);
}

.nav-item.is-current {
  color: var(--surface);
  background-color: var(--primary);
  font-weight: 500;
}

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

.toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--primary);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 64px;
  width: 100%;
}

.site-footer {
  background-color: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-group h3 {
  color: #ffffff;
  font-size: 15px;
  margin-bottom: 12px;
  font-weight: 600;
}

.footer-group a {
  display: block;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  padding: 4px 0;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   components / 通用组件
   ========================================================================== */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  min-height: 44px;
}

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

.btn-primary:hover {
  background-color: #16304d;
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: rgba(30, 58, 95, 0.06);
  color: var(--primary);
}

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

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

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

.btn-light:hover {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--primary);
}

.btn-outline-light {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.7);
}

.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: #ffffff;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

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

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

.breadcrumb-current {
  color: var(--text);
  font-weight: 500;
}

/* 页头 */
.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.3;
}

.page-description {
  font-size: 16px;
  color: var(--muted);
  max-width: 760px;
}

/* 折叠面板 */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background-color: var(--surface);
  margin-bottom: 12px;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  color: var(--accent);
  font-weight: 400;
  flex-shrink: 0;
}

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

.faq-item .faq-answer,
.faq-item > p {
  padding: 0 20px 16px;
  color: var(--muted);
  font-size: 15px;
}

.faq-item .faq-answer p {
  margin-bottom: 8px;
}

.faq-item .faq-answer a {
  font-size: 14px;
}

/* 图片容器 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  object-fit: cover;
}

figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 0 0;
  line-height: 1.5;
}

/* 风险提示条 */
.risk-notice-bar {
  background-color: #fdf3f2;
  border-left: 4px solid var(--danger);
  padding: 14px 20px;
  font-size: 14px;
  color: var(--text);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.risk-notice-bar strong {
  color: var(--danger);
}

/* ==========================================================================
   components / 页头导航（移动端汉堡）
   ========================================================================== */

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    display: none;
    box-shadow: var(--shadow-md);
  }

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

  .nav-item {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  .nav-item.is-current {
    background-color: rgba(30, 58, 95, 0.08);
    color: var(--primary);
  }
}

/* ==========================================================================
   components / 首页各模块
   ========================================================================== */

/* 首屏 */
.hero-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 17px;
  color: var(--muted);
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
}

.hero-figure {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-figure img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.content-media-primary {
  margin-top: 40px;
}

.content-media-primary img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius);
}

/* 服务总览 */
.service-overview-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
}

.section-header {
  margin-bottom: 28px;
}

.section-header h2 {
  margin-bottom: 8px;
}

.section-header p {
  color: var(--muted);
  max-width: 640px;
}

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

.service-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.service-target {
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.service-desc {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
  flex: 1;
}

.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

/* 服务开展方式 */
.delivery-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.delivery-left,
.delivery-right {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
}

.phase-list {
  list-style: none;
  counter-reset: phase;
}

.phase-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.phase-item:last-child {
  border-bottom: none;
}

.phase-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phase-text h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.phase-text p {
  font-size: 14px;
  color: var(--muted);
}

.delivery-table {
  margin-top: 16px;
}

.delivery-table th,
.delivery-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  vertical-align: top;
}

.delivery-table th {
  background-color: rgba(30, 58, 95, 0.04);
  font-weight: 600;
  color: var(--primary);
}

.delivery-table td {
  color: var(--text);
}

.delivery-table tr:last-child td {
  border-bottom: none;
}

/* 适用场景 */
.scenario-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.scenario-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.scenario-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.scenario-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.scenario-card p {
  font-size: 14px;
  color: var(--muted);
}

/* FAQ摘要 */
.faq-summary-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px;
}

.faq-mini-list {
  max-width: 800px;
  margin-bottom: 24px;
}

.faq-mini-list .faq-item summary {
  font-size: 15px;
}

.faq-mini-list .faq-item p {
  font-size: 14px;
}

/* 转化区 */
.cta-section {
  background-color: var(--primary);
  padding: 56px 24px;
}

.cta-inner {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
}

.cta-inner h2 {
  color: #ffffff;
  font-size: 26px;
  margin-bottom: 12px;
}

.cta-inner p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto 28px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 相关链接 */
.related-links {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.related-links-item {
  font-size: 14px;
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 16px;
  background-color: var(--surface);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ==========================================================================
   pages / 服务目录页
   ========================================================================== */

.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}

.service-catalog {
  min-width: 0;
}

.service-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  margin-bottom: 24px;
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 24px;
  align-items: start;
}

.service-item-text h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.service-applicable {
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.service-item-text > p {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 16px;
}

.service-delivery,
.service-boundary {
  margin-top: 12px;
}

.service-delivery h4,
.service-boundary h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.service-delivery ul {
  list-style: disc;
  padding-left: 20px;
  font-size: 14px;
  color: var(--muted);
}

.service-delivery li {
  margin-bottom: 4px;
}

.service-boundary p {
  font-size: 13px;
  color: var(--muted);
  background-color: rgba(179, 38, 30, 0.04);
  border-left: 2px solid var(--danger);
  padding: 8px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.service-item-media figure img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius);
}

.service-item-media figcaption {
  font-size: 12px;
}

/* 侧栏 */
.aside-panel {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: sticky;
  top: 96px;
}

.aside-panel h2 {
  font-size: 18px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.stage-group {
  margin-bottom: 20px;
}

.stage-group h3 {
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 8px;
}

.stage-group a {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  color: var(--text);
}

.stage-group a:hover {
  color: var(--accent);
}

.aside-faq-links {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 24px;
}

.aside-faq-links h3 {
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 8px;
}

.aside-faq-links a {
  display: block;
  font-size: 14px;
  padding: 4px 0;
  color: var(--text);
}

.aside-faq-links a:hover {
  color: var(--accent);
}

/* ==========================================================================
   pages / 合作路径页
   ========================================================================== */

.page-title-block {
  margin-bottom: 32px;
}

.page-title-block p {
  color: var(--muted);
  max-width: 760px;
}

.phase-steps-wrap {
  margin-bottom: 40px;
}

.phase-steps-wrap > h2 {
  margin-bottom: 24px;
}

.phase-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.phase-step-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.phase-step-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.phase-step-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.phase-step-head h3 {
  font-size: 18px;
  margin: 0;
}

.phase-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}

.phase-step-body > p {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 12px;
}

.phase-task-list {
  background-color: rgba(30, 58, 95, 0.03);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.phase-task-list p {
  font-size: 14px;
  color: var(--muted);
  padding: 4px 0;
}

.phase-task-list p::before {
  content: "·";
  color: var(--accent);
  font-weight: 700;
  margin-right: 8px;
}

.deliverables-table-wrap {
  margin-bottom: 40px;
}

.deliverables-table-wrap > h2 {
  margin-bottom: 8px;
}

.deliverables-table-wrap > p {
  color: var(--muted);
  margin-bottom: 20px;
}

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

.deliverables-table th,
.deliverables-table td {
  padding: 14px 16px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.deliverables-table th {
  background-color: rgba(30, 58, 95, 0.05);
  font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
}

.deliverables-table td {
  color: var(--text);
}

.deliverables-table tr:last-child td {
  border-bottom: none;
}

.phase-image-block {
  margin-bottom: 40px;
}

.phase-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius);
}

.risk-note-block {
  margin-bottom: 40px;
}

.risk-note {
  background-color: #fdf3f2;
  border-left: 4px solid var(--danger);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 24px;
}

.risk-note h2 {
  font-size: 18px;
  color: var(--danger);
  margin-bottom: 8px;
}

.risk-note p {
  font-size: 15px;
  color: var(--text);
}

.related-links-block {
  margin-bottom: 40px;
}

.related-links-block h2 {
  margin-bottom: 16px;
}

.related-links-block .related-links {
  padding: 0;
  gap: 12px;
}

.related-links-block .related-links a {
  display: inline-block;
}

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

.page-title-desc {
  color: var(--muted);
  max-width: 760px;
  margin-bottom: 24px;
}

.content-media-inline {
  margin-bottom: 32px;
}

.content-media-inline img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius);
}

.faq-group-section {
  margin-bottom: 40px;
}

.faq-group-section h2 {
  font-size: 22px;
  margin-bottom: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.faq-group-intro {
  color: var(--muted);
  margin-bottom: 16px;
}

.boundary-note {
  background-color: #fdf3f2;
  border-left: 4px solid var(--danger);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 20px;
  margin-bottom: 32px;
}

.boundary-note p {
  font-size: 14px;
  color: var(--text);
}

.boundary-note strong {
  color: var(--danger);
}

/* ==========================================================================
   pages / 学习帮助页
   ========================================================================== */

.sidebar-right {
  grid-template-columns: 1fr 320px;
}

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

.main-content .breadcrumb {
  margin-bottom: 16px;
}

.help-section {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  margin-bottom: 24px;
}

.help-section h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.help-section > p {
  color: var(--muted);
  margin-bottom: 16px;
}

.help-steps {
  list-style: none;
}

.help-steps li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.help-steps li:last-child {
  border-bottom: none;
}

.help-steps h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.help-steps p {
  font-size: 14px;
  color: var(--muted);
}

.help-figure {
  margin: 16px 0;
}

.help-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius);
}

.training-methods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

.method-card {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.method-card h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.method-card p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 8px;
}

.method-card ul {
  list-style: disc;
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
}

.method-card li {
  margin-bottom: 4px;
}

.record-types {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.record-card {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.record-card h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.record-card ul {
  list-style: disc;
  padding-left: 18px;
  font-size: 14px;
  color: var(--muted);
}

.record-card li {
  margin-bottom: 4px;
}

.help-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.aside-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.aside-card h2 {
  font-size: 16px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.aside-card nav a {
  display: block;
  font-size: 14px;
  padding: 6px 0;
  color: var(--text);
}

.aside-card nav a:hover {
  color: var(--accent);
}

/* ==========================================================================
   pages / 企业介绍页
   ========================================================================== */

.page-title-area {
  margin-bottom: 40px;
}

.title-inner p {
  color: var(--muted);
  max-width: 760px;
}

.position-section {
  margin-bottom: 40px;
}

.position-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.position-copy h2 {
  margin-bottom: 16px;
}

.position-copy p {
  margin-bottom: 12px;
  color: var(--text);
}

.position-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
}

.principle-section {
  margin-bottom: 40px;
}

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

.principle-item {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.principle-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.principle-item h3 {
  margin-bottom: 8px;
}

.principle-item p {
  font-size: 14px;
  color: var(--muted);
}

.team-section {
  margin-bottom: 40px;
}

.team-heading {
  margin-bottom: 24px;
}

.team-heading h2 {
  margin-bottom: 8px;
}

.team-heading p {
  color: var(--muted);
}

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

.team-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.team-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.team-card p {
  font-size: 14px;
  color: var(--muted);
}

.boundary-section {
  margin-bottom: 40px;
}

.boundary-wrap {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.boundary-wrap h2 {
  margin-bottom: 16px;
}

.boundary-list {
  list-style: none;
  margin-bottom: 16px;
}

.boundary-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.boundary-list li::before {
  content: "✕";
  color: var(--danger);
  font-weight: 700;
  flex-shrink: 0;
}

.boundary-list li:last-child {
  border-bottom: none;
}

.boundary-note {
  font-size: 13px;
  color: var(--muted);
}

.next-step-section {
  background-color: var(--primary);
  padding: 48px 24px;
  border-radius: var(--radius);
  margin-bottom: 40px;
}

.next-step-inner {
  text-align: center;
}

.next-step-inner h2 {
  color: #ffffff;
  font-size: 22px;
  margin-bottom: 8px;
}

.next-step-inner p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 24px;
}

.next-step-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   pages / 404页
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 40px 24px;
}

.error-section {
  text-align: center;
  max-width: 600px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  color: var(--muted);
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   responsive / 响应式断点
   ========================================================================== */

@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .service-item {
    grid-template-columns: 1fr 160px;
    gap: 16px;
  }

  .page-layout {
    grid-template-columns: 1fr 280px;
    gap: 24px;
  }
}

@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 24px 32px;
  }

  .hero-figure img {
    height: 280px;
  }

  .delivery-section {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

  .scenario-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-layout {
    grid-template-columns: 1fr;
  }

  .aside-panel {
    position: static;
  }

  .service-item {
    grid-template-columns: 1fr;
  }

  .service-item-media figure img {
    height: 180px;
  }

  .position-wrap {
    grid-template-columns: 1fr;
  }

  .principle-list {
    grid-template-columns: 1fr 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr 1fr;
  }

  .record-types {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
    padding: 0 16px;
  }

  .brand-name {
    font-size: 20px;
  }

  .brand-tagline {
    font-size: 11px;
  }

  .site-nav {
    top: 64px;
  }

  .inner-main {
    padding: 24px 16px 48px;
    max-width: 100%;
  }

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

  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 22px;
  }

  .hero-section {
    padding: 32px 16px 24px;
  }

  .hero-content h1 {
    font-size: 28px;
  }

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

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .service-overview-section,
  .delivery-section,
  .scenario-section,
  .faq-summary-section {
    padding: 32px 16px;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .delivery-left,
  .delivery-right {
    padding: 24px 20px;
  }

  .cta-section {
    padding: 40px 16px;
  }

  .cta-actions {
    flex-direction: column;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .related-links {
    padding: 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .training-methods {
    grid-template-columns: 1fr;
  }

  .principle-list {
    grid-template-columns: 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .next-step-actions {
    flex-direction: column;
  }

  .next-step-actions .btn {
    width: 100%;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 32px 16px 16px;
  }

  .footer-bottom {
    padding: 16px;
    flex-direction: column;
    gap: 8px;
  }

  .phase-step-card {
    padding: 20px;
  }

  .deliverables-table th,
  .deliverables-table td {
    padding: 10px 12px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0 12px;
    gap: 12px;
  }

  .brand-tagline {
    display: none;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .service-item,
  .delivery-left,
  .delivery-right,
  .position-wrap,
  .boundary-wrap,
  .help-section {
    padding: 20px 16px;
  }

  .phase-step-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

/* ==========================================================================
   motion / 动效增强（不影响初始可见性）
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
  .service-card,
  .scenario-card,
  .phase-step-card,
  .principle-item,
  .team-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  }
}