/* ==========================================================================
   每日大赛mrds · 整站样式表
   视觉方向：赛事技术服务风 —— 冷白背景 + 等宽数据字体 + 蓝绿状态色
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base —— 重置、变量、字体、通用元素
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #eff6ff;
  --color-success: #10b981;
  --color-success-light: #ecfdf5;
  --color-danger: #ef4444;
  --color-danger-light: #fef2f2;
  --color-border: #e2e8f0;
  --color-border-dark: #cbd5e1;

  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: SF Mono, Consolas, monospace;

  --container-width: 1200px;
  --container-padding: 24px;
  --header-height: 68px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --transition-base: 0.2s ease;
}

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

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

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  color: var(--color-text-secondary);
}

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

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

/* --------------------------------------------------------------------------
   2. Layout —— 全站统一骨架：页头、主容器、页脚
   -------------------------------------------------------------------------- */

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

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

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

/* 导航 */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-list li a:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-list li a.is-current {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  font-weight: 600;
}

/* 合作入口按钮 */
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
  flex-shrink: 0;
}

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

/* 移动端汉堡按钮（默认隐藏，移动端显示） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* 主内容容器 */
.site-main {
  min-height: 60vh;
}

.home-main {
  overflow: visible;
}

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

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

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

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

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

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

/* 页面标题区 */
.page-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  max-width: 720px;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 40px 0 32px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
}

.footer-brand {
  flex: 1;
}

.footer-brand-name {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

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

.footer-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.footer-nav a {
  font-size: 14px;
  color: var(--color-text-secondary);
}

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

.footer-meta {
  text-align: right;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   3. Components —— 通用组件
   -------------------------------------------------------------------------- */

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

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

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

.btn-secondary {
  color: var(--color-primary);
  background-color: transparent;
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  background-color: var(--color-primary-light);
}

/* 区块标题与说明 */
.section-intro {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 680px;
  margin-bottom: 28px;
}

/* 折叠问答 */
.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background-color var(--transition-base);
}

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

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

.faq-item[open] summary {
  background-color: var(--color-primary-light);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.faq-item p a {
  font-weight: 500;
}

/* 边界提示条 */
.boundary-note {
  background-color: var(--color-danger-light);
  border: 1px solid #fecaca;
  border-left: 4px solid var(--color-danger);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 32px 0;
}

.boundary-note p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.boundary-note p:last-child {
  margin-bottom: 0;
}

.boundary-note ul {
  margin: 8px 0 12px;
  padding-left: 4px;
}

.boundary-note li {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 4px 0 4px 20px;
  position: relative;
}

.boundary-note li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-danger);
  font-weight: 700;
}

/* 交付物标签 */
.deliverable-tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--color-success);
  background-color: var(--color-success-light);
  border: 1px solid #a7f3d0;
  border-radius: 999px;
  white-space: nowrap;
}

/* 图片容器 */
figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 8px 0 0;
  text-align: center;
}

/* --------------------------------------------------------------------------
   4. Pages —— 首页
   -------------------------------------------------------------------------- */

/* 首屏 */
.hero-section {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0 64px;
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

#hero-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.25;
}

.hero-lead {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 560px;
}

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

/* 首屏右侧状态面板 */
.hero-status-panel {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.status-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.status-label {
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.status-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.status-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  align-self: flex-start;
}

.status-tag-active {
  color: var(--color-success);
  background-color: var(--color-success-light);
  border: 1px solid #a7f3d0;
}

.status-progress {
  margin-bottom: 16px;
}

.progress-track {
  height: 8px;
  background-color: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background-color: var(--color-primary);
}

.progress-fill-40 {
  width: 40%;
}

.progress-text {
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.status-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

/* 首屏图片 */
.content-media-primary {
  grid-column: 1 / -1;
  margin-top: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.content-media-primary img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* 服务矩阵 */
.service-matrix {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding);
}

#matrix-title,
#timeline-title,
#scenario-title,
#coop-title,
#faq-preview-title {
  margin-bottom: 12px;
}

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

.matrix-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

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

.card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.matrix-card h3 {
  margin-bottom: 8px;
}

.matrix-card p {
  font-size: 14px;
  margin-bottom: 16px;
}

.matrix-card a {
  font-size: 14px;
  font-weight: 500;
}

/* 赛事周期时间轴 */
.timeline-section {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 0;
}

.timeline-section .section-intro,
.timeline-section h2 {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.timeline-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  counter-reset: timeline-counter;
}

.timeline-item {
  position: relative;
  padding: 24px 16px 16px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  counter-increment: timeline-counter;
}

.timeline-node {
  display: block;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-mono);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.timeline-node::before {
  content: counter(timeline-counter);
}

.timeline-body h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.timeline-body p {
  font-size: 13px;
  margin-bottom: 12px;
}

/* 适用场景索引（首页） */
.scenario-index {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding);
}

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

.scenario-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

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

.scenario-figure {
  overflow: hidden;
}

.scenario-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.scenario-card h3 {
  padding: 16px 20px 6px;
}

.scenario-card p {
  padding: 0 20px;
  font-size: 14px;
  margin-bottom: 16px;
}

.scenario-card a {
  display: inline-block;
  margin: 0 20px 20px;
  font-size: 14px;
  font-weight: 500;
}

/* 合作流程预览 */
.cooperation-preview {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 64px 0;
}

.cooperation-preview .section-intro,
.cooperation-preview h2 {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.steps-list {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step-counter;
}

.step-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-num {
  display: block;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  font-size: 16px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 13px;
}

.link-more {
  display: inline-block;
  margin: 32px var(--container-padding) 0;
  max-width: var(--container-width);
  font-size: 15px;
  font-weight: 600;
}

/* 首页 FAQ 预览 */
.faq-preview {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px var(--container-padding);
}

.faq-preview .faq-item {
  max-width: 720px;
}

.faq-more-link {
  margin-top: 16px;
  font-size: 14px;
}

/* 服务边界声明（首页） */
.home-main > .boundary-note {
  max-width: var(--container-width);
  margin: 0 auto 64px;
}

/* --------------------------------------------------------------------------
   5. Pages —— 内页通用（文档式布局）
   -------------------------------------------------------------------------- */

/* 内页首图 */
.page-hero-figure,
.page-hero-media {
  margin-bottom: 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.page-hero-figure img,
.page-hero-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

/* 内页区块通用间距 */
.inner-main section {
  margin-bottom: 48px;
}

.inner-main section h2 {
  margin-bottom: 12px;
}

/* 相关链接（aside 与 nav 共用） */
.related-links {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 48px;
}

.related-links h2 {
  font-size: 18px;
  margin-bottom: 16px;
}

.related-links ul li {
  padding: 6px 0;
}

.related-links ul li a {
  font-size: 14px;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-right: 16px;
}

.related-links-item {
  font-size: 14px;
  margin-right: 16px;
}

/* --------------------------------------------------------------------------
   6. Pages —— 赛事方案（events）
   -------------------------------------------------------------------------- */

/* 服务矩阵表格 */
.matrix-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.service-matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 720px;
}

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

.service-matrix-table thead th {
  background-color: var(--color-bg);
  font-weight: 600;
  color: var(--color-text);
  font-size: 13px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

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

.service-matrix-table tbody th {
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.service-matrix-table td {
  color: var(--color-text-secondary);
}

/* 服务详情 */
.service-detail-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

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

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

.service-detail-item p {
  font-size: 15px;
  margin-bottom: 8px;
}

/* 边界说明区块 */
.boundary-note-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

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

/* --------------------------------------------------------------------------
   7. Pages —— 适用场景（scenarios）
   -------------------------------------------------------------------------- */

.scenario-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 16px;
}

.scenario-card-grid .scenario-card {
  display: flex;
  flex-direction: column;
}

.scenario-card-grid .scenario-figure img {
  height: 200px;
}

.service-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 20px;
  margin-bottom: 16px;
}

.service-tag-list li {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 3px 10px;
  border-radius: 999px;
}

/* 服务匹配清单 */
.matching-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.matching-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.matching-item h3 {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.matching-item ul li {
  font-size: 14px;
  color: var(--color-text-secondary);
  padding: 5px 0 5px 20px;
  position: relative;
}

.matching-item ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-family: var(--font-mono);
}

/* 场景选择提示 */
.scenario-tips {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.scenario-tips p {
  font-size: 15px;
  margin-bottom: 10px;
}

.scenario-tips p:last-child {
  margin-bottom: 0;
}

/* FAQ 预告 */
.faq-teaser {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.faq-teaser h2 {
  margin-bottom: 8px;
}

.faq-teaser > p {
  font-size: 14px;
  margin-bottom: 16px;
}

.faq-teaser .faq-item {
  max-width: 720px;
}

/* --------------------------------------------------------------------------
   8. Pages —— 赛制说明（rules）
   -------------------------------------------------------------------------- */

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

.rules-type-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.rule-type-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.rule-type-item h3 {
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.rule-type-item p {
  font-size: 14px;
}

/* 对比表 */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.rules-comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 760px;
}

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

.rules-comparison-table thead th {
  background-color: var(--color-bg);
  font-weight: 600;
  color: var(--color-text);
  font-size: 13px;
  font-family: var(--font-mono);
}

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

.rules-comparison-table tbody th {
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.rules-comparison-table td {
  color: var(--color-text-secondary);
}

/* 选择建议 */
.selection-guide {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.guide-content p {
  font-size: 15px;
  margin-bottom: 12px;
}

.guide-content p:last-child {
  margin-bottom: 0;
}

.rules-figure {
  margin-top: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.rules-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

/* --------------------------------------------------------------------------
   9. Pages —— 技术支持（support）
   -------------------------------------------------------------------------- */

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

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

.tech-item h3 {
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.tech-item p {
  font-size: 14px;
}

/* 交付标准 */
.delivery-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.delivery-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.delivery-item p {
  font-size: 14px;
}

/* 排除项 */
.exclusion-section .boundary-note {
  margin-top: 16px;
}

/* 相关区块 */
.related-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.related-section .related-links {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-section .related-links a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base);
}

.related-section .related-links a:hover {
  background-color: #dbeafe;
}

/* --------------------------------------------------------------------------
   10. Pages —— 合作流程（cooperation）
   -------------------------------------------------------------------------- */

/* 纵向时间轴 */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--color-border-dark);
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

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

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 6px;
  width: 26px;
  height: 26px;
  background-color: var(--color-surface);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  z-index: 1;
}

.timeline-content {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.timeline-content h3 {
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 14px;
  margin-bottom: 12px;
}

/* 准备清单 */
.prep-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
}

.prep-list {
  margin: 16px 0 20px;
}

.prep-list li {
  font-size: 15px;
  color: var(--color-text-secondary);
  padding: 8px 0 8px 28px;
  position: relative;
}

.prep-list li::before {
  content: "□";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 16px;
}

.prep-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.prep-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

/* 行动入口 */
.cta-links {
  text-align: center;
  padding: 24px 0;
}

.cta-links p {
  margin-bottom: 20px;
  font-size: 15px;
}

.cta-links a {
  display: inline-block;
  margin: 0 8px 8px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.cta-links a:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   11. Pages —— 常见问题（faq）
   -------------------------------------------------------------------------- */

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

.faq-intro .section-title,
.faq-intro p {
  margin-bottom: 12px;
}

.faq-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-top: 20px;
}

.faq-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

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

.faq-group .section-title {
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.faq-list {
  max-width: 800px;
}

.faq-list .faq-item p a {
  color: var(--color-primary);
  font-weight: 500;
}

/* 后续入口 */
.faq-next {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.faq-next p {
  font-size: 15px;
}

.faq-next a {
  display: inline-block;
  margin: 8px 12px 0;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   12. Pages —— 404
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-section {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  margin-bottom: 28px;
}

.error-btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

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

/* --------------------------------------------------------------------------
   13. Responsive —— 响应式断点
   -------------------------------------------------------------------------- */

/* 平板：≤1024px */
@media (max-width: 1024px) {
  .matrix-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline-list {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 24px;
  }

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

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

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

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

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

  .steps-list {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 24px;
  }
}

/* 移动端：≤768px */
@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
    --header-height: 60px;
  }

  /* 页头 */
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding-top: 8px;
    padding-bottom: 8px;
    gap: 8px;
  }

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: flex;
    order: 3;
    margin-left: auto;
  }

  .header-cta {
    order: 2;
    padding: 6px 14px;
    font-size: 13px;
  }

  .site-nav {
    order: 4;
    width: 100%;
    flex-basis: 100%;
    justify-content: flex-start;
  }

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

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

  .nav-list li a {
    padding: 12px 8px;
    font-size: 15px;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
  }

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

  /* 首页 */
  .hero-section {
    padding: 32px 0 40px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

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

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

  .content-media-primary img {
    height: 200px;
  }

  .service-matrix,
  .scenario-index,
  .faq-preview {
    padding: 40px 16px;
  }

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

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

  .timeline-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

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

  .cooperation-preview {
    padding: 40px 0;
  }

  .home-main > .boundary-note {
    margin: 0 16px 40px;
  }

  /* 内页 */
  .inner-main {
    padding: 24px 16px 48px;
  }

  .page-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
  }

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

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

  .breadcrumb {
    margin-bottom: 16px;
    font-size: 13px;
    flex-wrap: wrap;
  }

  .page-hero-figure img,
  .page-hero-media img {
    height: 180px;
  }

  /* 规则页 */
  .rules-type-list {
    grid-template-columns: 1fr;
  }

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

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

  /* 页脚 */
  .footer-inner {
    flex-direction: column;
    gap: 24px;
  }

  .footer-brand {
    text-align: center;
  }

  .footer-nav {
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  .footer-meta {
    text-align: center;
    width: 100%;
  }

  /* 404 */
  .error-code {
    font-size: 56px;
  }
}

/* 小屏手机：≤390px */
@media (max-width: 390px) {
  .header-cta {
    display: none;
  }

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

  .scenario-card-grid .scenario-figure img {
    height: 160px;
  }

  .timeline-content {
    padding: 16px;
  }

  .boundary-note {
    padding: 16px;
  }
}