/* ============================================================
   每日大赛mrds — 整站样式表
   视觉方向：法律专业风 / 衬线标题 + 中性正文
   版本：1.0
   ============================================================ */

/* ============================================================
   Base — 重置、变量、字体、基础元素
   ============================================================ */
:root {
  --color-heading: #1f2937;
  --color-bg: #f8f6f0;
  --color-accent: #b45309;
  --color-text: #374151;
  --color-border: #e5e7eb;
  --color-white: #ffffff;
  --color-muted: #6b7280;
  --color-link-hover: #92400e;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-max: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 1px 3px rgba(31, 41, 55, 0.06), 0 1px 2px rgba(31, 41, 55, 0.04);
  --shadow-hover: 0 4px 12px rgba(31, 41, 55, 0.08), 0 2px 4px rgba(31, 41, 55, 0.04);
  --transition-base: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-heading);
  line-height: 1.35;
}

p {
  margin-bottom: 1rem;
}

ul,
ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.4rem;
}

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

figure {
  margin: 0;
}

/* ============================================================
   Layout — 全局骨架、容器、主区域
   ============================================================ */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.site-main.home-main {
  padding-bottom: 0;
}

.inner-main {
  padding-bottom: 3rem;
}

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

.site-nav {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-brand {
  flex-shrink: 0;
}

.nav-brand a {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-heading);
  letter-spacing: 0.02em;
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  font-size: 0.95rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-list a:hover {
  color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.06);
}

.nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-heading);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-footer {
  background-color: var(--color-heading);
  color: #d1d5db;
  padding: 3rem 1.5rem 1.5rem;
  margin-top: auto;
}

.site-footer .footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0.6rem;
}

.footer-tagline {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #9ca3af;
  margin-bottom: 0;
}

.footer-column h3 {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0.9rem;
}

.footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-column li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  font-size: 0.9rem;
  color: #9ca3af;
  transition: color var(--transition-base);
}

.footer-column a:hover {
  color: var(--color-white);
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 1.2rem auto 0;
  font-size: 0.85rem;
  color: #6b7280;
}

.footer-bottom p {
  margin: 0;
}

/* ============================================================
   Components — 通用组件模块
   ============================================================ */

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: 0.875rem;
  color: var(--color-muted);
}

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

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

.breadcrumb-sep {
  margin: 0 0.5rem;
  color: #9ca3af;
}

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

/* 页面标题区 */
.page-header {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem 1.5rem 1.5rem;
}

.page-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.page-description {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 720px;
  margin-bottom: 0;
}

/* 按钮 */
.btn-primary {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-accent);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.btn-primary:hover {
  background-color: var(--color-link-hover);
  border-color: var(--color-link-hover);
  color: var(--color-white);
}

.btn-secondary {
  display: inline-block;
  background-color: transparent;
  color: var(--color-accent);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-accent);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.btn-secondary:hover {
  background-color: rgba(180, 83, 9, 0.08);
  color: var(--color-link-hover);
}

.btn-link {
  display: inline-block;
  color: var(--color-accent);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.7rem 0.4rem;
  transition: color var(--transition-base);
}

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

.btn-back {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-accent);
  transition: background-color var(--transition-base);
}

.btn-back:hover {
  background-color: var(--color-link-hover);
  color: var(--color-white);
}

/* 图片容器 */
.content-media {
  margin: 1.5rem 0;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.content-media figcaption {
  font-size: 0.85rem;
  color: var(--color-muted);
  padding: 0.6rem 0.2rem 0;
  line-height: 1.5;
}

.content-media-inline {
  max-width: 680px;
}

/* FAQ 折叠面板 */
.faq-list {
  border-top: 1px solid var(--color-border);
}

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

.faq-item summary {
  cursor: pointer;
  padding: 1.1rem 0.2rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-heading);
  list-style: none;
  position: relative;
  padding-right: 2.5rem;
  transition: color var(--transition-base);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition-base);
}

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

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

.faq-item p {
  padding: 0 0.2rem 1.1rem;
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0;
}

/* 步骤条（首页） */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.step-item {
  position: relative;
  padding-top: 2.2rem;
}

.step-num {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background-color: rgba(180, 83, 9, 0.1);
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.95rem;
}

.step-item h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.step-item p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* 侧栏目录 */
.toc-sidebar,
.aside-toc {
  min-width: 0;
}

.toc-container,
.toc-box {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.toc-container h2,
.toc-box h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.toc-list,
.toc-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li,
.toc-box li {
  margin-bottom: 0.35rem;
}

.toc-list a,
.toc-box a {
  display: block;
  padding: 0.4rem 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.toc-list a:hover,
.toc-box a:hover {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.04);
}

.aside-note {
  margin-top: 1.2rem;
  background-color: rgba(180, 83, 9, 0.05);
  border: 1px solid rgba(180, 83, 9, 0.15);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
}

.aside-note p {
  font-size: 0.88rem;
  margin-bottom: 0.6rem;
}

.aside-note a {
  font-size: 0.88rem;
  font-weight: 500;
}

.aside-block {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.2rem;
  box-shadow: var(--shadow-card);
}

.aside-block h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-list li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 0.9rem;
  height: 0.9rem;
  border: 1px solid var(--color-accent);
  border-radius: 2px;
  background-color: var(--color-white);
}

/* 相关链接区块 */
.related-links {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem 1.5rem 0;
}

.related-links h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.related-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related-links li {
  margin-bottom: 0.6rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.related-card {
  display: block;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.related-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(180, 83, 9, 0.3);
}

.related-card h3 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.related-card p {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* 表格通用 */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
}

.table-wrapper table {
  min-width: 640px;
}

.table-wrapper th,
.table-wrapper td {
  padding: 0.8rem 1rem;
  text-align: left;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border);
}

.table-wrapper th {
  background-color: #f9fafb;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-heading);
  white-space: nowrap;
}

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

.table-wrapper tbody tr {
  transition: background-color var(--transition-base);
}

.table-wrapper tbody tr:hover {
  background-color: rgba(180, 83, 9, 0.04);
}

/* 辅助可见性 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ============================================================
   Pages — 首页
   ============================================================ */

/* Hero 主视觉 */
.hero {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem 2.5rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.25rem;
  line-height: 1.3;
  margin-bottom: 1.2rem;
}

.hero-text p {
  font-size: 1.05rem;
  color: var(--color-muted);
  margin-bottom: 1.8rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hover);
  border: 1px solid var(--color-border);
}

/* 服务概览 */
.services-preview {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.services-preview h2,
.process-preview h2,
.resources-entry h2,
.faq-section h2,
.cta-section h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.section-intro {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 640px;
  margin-bottom: 2rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: 0.9rem;
}

.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.service-card p {
  font-size: 0.92rem;
  color: var(--color-muted);
  margin-bottom: 1.1rem;
}

.service-card a {
  font-size: 0.9rem;
  font-weight: 500;
}

.preview-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* 合作流程预览 */
.process-preview {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.process-note {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.8rem;
  box-shadow: var(--shadow-card);
}

.process-note h3 {
  font-size: 1rem;
  margin-bottom: 0.6rem;
}

.process-note p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 0.8rem;
}

.process-note a {
  font-size: 0.9rem;
  font-weight: 500;
}

/* 资料入口 */
.resources-entry {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.entry-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.category-list,
.recommended-list {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.8rem;
  box-shadow: var(--shadow-card);
}

.category-list h3,
.recommended-list h3 {
  font-size: 1.05rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.category-list ul,
.recommended-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-list li,
.recommended-list li {
  margin-bottom: 0.6rem;
}

.category-list a,
.recommended-list a {
  font-size: 0.92rem;
  color: var(--color-text);
  transition: color var(--transition-base);
}

.category-list a:hover,
.recommended-list a:hover {
  color: var(--color-accent);
}

.resource-media img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* FAQ 区块 */
.faq-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

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

/* CTA 引导 */
.cta-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  text-align: left;
}

.cta-section h2 {
  margin-bottom: 0.6rem;
}

.cta-section p {
  color: var(--color-muted);
  max-width: 560px;
  margin-bottom: 1.5rem;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

/* ============================================================
   Pages — 内页通用布局
   ============================================================ */

/* 服务总览页布局 */
.page-layout {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
  align-items: start;
}

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

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

.page-figure {
  margin-bottom: 2rem;
}

.page-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.page-figure figcaption {
  font-size: 0.85rem;
  color: var(--color-muted);
  padding: 0.6rem 0.2rem 0;
}

/* 内页内容区块 */
.intro-section,
.service-matrix,
.delivery-standard,
.service-boundary,
.content-section,
.timeline-section,
.impact-summary,
.terms-section {
  margin-bottom: 2.5rem;
}

.intro-section h2,
.service-matrix h2,
.delivery-standard h2,
.service-boundary h2,
.content-section h2,
.timeline-section h2,
.impact-summary h2,
.terms-section h2 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

.intro-section p,
.service-matrix p,
.delivery-standard p,
.service-boundary p,
.content-section p,
.timeline-section p,
.impact-summary p,
.terms-section p {
  font-size: 0.95rem;
}

/* 服务矩阵 */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 1.2rem;
}

.matrix-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.4rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base);
}

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

.matrix-card-header {
  margin-bottom: 0.9rem;
}

.matrix-card-header h3 {
  font-size: 1.1rem;
}

.matrix-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.08);
  border-radius: 2px;
  padding: 0.15rem 0.5rem;
  margin-top: 0.4rem;
}

.matrix-target,
.matrix-scope {
  font-size: 0.88rem;
}

.matrix-target {
  margin-bottom: 0.5rem;
}

.matrix-target strong,
.matrix-scope strong {
  color: var(--color-heading);
  font-weight: 600;
}

.matrix-link {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: 0.4rem;
}

/* 交付标准与边界列表 */
.standard-list,
.boundary-list,
.content-list,
.material-list {
  padding-left: 1.2rem;
}

.standard-list li,
.boundary-list li,
.content-list li,
.material-list li {
  font-size: 0.92rem;
  margin-bottom: 0.5rem;
}

.standard-list strong {
  color: var(--color-heading);
  font-weight: 600;
}

/* 服务详情页工作流程 */
.process-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
}

.process-list li {
  position: relative;
  padding-left: 2.6rem;
  padding-bottom: 1.6rem;
  margin-bottom: 0;
  border-left: 1px solid var(--color-border);
}

.process-list li:last-child {
  border-left-color: transparent;
}

.process-list li::before {
  content: "";
  position: absolute;
  left: -0.45rem;
  top: 0.3rem;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  background-color: var(--color-bg);
}

.process-list h3 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.process-list p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* ============================================================
   Pages — 资料下载页
   ============================================================ */
.layout-shell {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
  align-items: start;
}

.sidebar-left {
  grid-template-columns: 280px 1fr;
}

.resource-filter {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.4rem;
  box-shadow: var(--shadow-card);
  position: sticky;
  top: 88px;
}

.resource-filter h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.filter-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.filter-list li {
  margin-bottom: 0.35rem;
}

.filter-list a {
  display: block;
  padding: 0.45rem 0.6rem;
  font-size: 0.9rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base), background-color var(--transition-base);
}

.filter-list a:hover {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
  background-color: rgba(180, 83, 9, 0.04);
}

.filter-note {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--color-border);
  margin-bottom: 0;
}

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

.resource-section {
  margin-bottom: 2.5rem;
}

.resource-section h2 {
  font-size: 1.25rem;
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.resource-section p {
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.resource-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
}

.resource-table {
  min-width: 560px;
}

.resource-table th,
.resource-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--color-border);
}

.resource-table th {
  background-color: #f9fafb;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-heading);
  white-space: nowrap;
}

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

.resource-table tbody tr {
  transition: background-color var(--transition-base);
}

.resource-table tbody tr:hover {
  background-color: rgba(180, 83, 9, 0.04);
}

.resource-table td a {
  font-size: 0.88rem;
  font-weight: 500;
}

/* 字段字典 */
.field-dictionary {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.8rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
}

.field-dictionary h2 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.dict-list {
  margin: 0;
}

.dict-item {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
}

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

.dict-item dt {
  font-weight: 600;
  color: var(--color-heading);
  font-size: 0.9rem;
}

.dict-item dd {
  font-size: 0.88rem;
  margin: 0;
}

/* 来源说明 */
.source-notes {
  background-color: rgba(180, 83, 9, 0.04);
  border: 1px solid rgba(180, 83, 9, 0.12);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.8rem;
}

.source-notes h2 {
  font-size: 1.125rem;
  margin-bottom: 0.8rem;
}

.source-notes p {
  font-size: 0.88rem;
  margin-bottom: 0.6rem;
}

.source-notes p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   Pages — 使用教程页
   ============================================================ */
.sidebar-right {
  grid-template-columns: 1fr 300px;
}

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

.guide-step {
  margin-bottom: 2.5rem;
}

.guide-step h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.guide-step p {
  font-size: 0.95rem;
}

.guide-step ul {
  font-size: 0.92rem;
}

.guide-figure {
  margin: 1.5rem 0;
}

.guide-figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.guide-figure figcaption {
  font-size: 0.85rem;
  color: var(--color-muted);
  padding: 0.6rem 0.2rem 0;
}

/* ============================================================
   Pages — 版本记录页
   ============================================================ */
.timeline-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.timeline-section .section-title {
  font-size: 1.375rem;
  margin-bottom: 0.75rem;
}

.timeline-section .section-intro {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.timeline-item {
  position: relative;
  padding-left: 2.5rem;
  padding-bottom: 1.8rem;
  border-left: 1px solid var(--color-border);
}

.timeline-item:last-child {
  border-left-color: transparent;
}

.timeline-marker {
  position: absolute;
  left: -0.9rem;
  top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0 0.3rem;
}

.timeline-marker time {
  font-size: 0.75rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.timeline-content {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow-card);
}

.timeline-content h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.timeline-content p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.impact-summary {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 0;
}

.impact-summary .section-title {
  font-size: 1.375rem;
  margin-bottom: 0.75rem;
}

.note-text {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 1rem;
}

/* ============================================================
   Pages — 许可说明页
   ============================================================ */
.content-main {
  min-width: 0;
}

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

.side-note {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1.2rem;
  box-shadow: var(--shadow-card);
}

.side-note h3 {
  font-size: 1rem;
  margin-bottom: 0.6rem;
}

.side-note p {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin-bottom: 0;
}

.terms-links {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.terms-links a {
  font-weight: 500;
  margin-right: 1.5rem;
}

/* ============================================================
   Pages — 合作咨询页
   ============================================================ */
.layout-two-col {
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.process-block {
  min-width: 0;
}

.process-block h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.process-step {
  margin-bottom: 1.6rem;
}

.process-step h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
  color: var(--color-accent);
}

.process-step p {
  font-size: 0.92rem;
  margin-bottom: 0;
}

.material-list {
  padding-left: 1.2rem;
}

.material-list li {
  font-size: 0.92rem;
}

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

.faq-panel h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.faq-more {
  margin-top: 1.2rem;
  font-size: 0.92rem;
}

.contact-guide {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem 0;
}

.contact-guide h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.contact-guide p {
  font-size: 0.95rem;
}

.guide-steps {
  padding-left: 1.2rem;
}

.guide-steps li {
  font-size: 0.92rem;
  margin-bottom: 0.6rem;
}

.guide-steps strong {
  color: var(--color-heading);
}

/* ============================================================
   Pages — 404
   ============================================================ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem;
  flex: 1 0 auto;
}

.error-panel {
  text-align: center;
  max-width: 520px;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.error-panel h1 {
  font-size: 1.5rem;
  margin-bottom: 0.8rem;
}

.error-desc {
  color: var(--color-muted);
  margin-bottom: 1.8rem;
}

/* ============================================================
   Responsive — 响应式断点
   ============================================================ */

/* 平板：1024px */
@media (max-width: 1024px) {
  .page-layout,
  .layout-shell {
    grid-template-columns: 1fr 260px;
    gap: 1.5rem;
  }

  .sidebar-left {
    grid-template-columns: 240px 1fr;
  }

  .service-grid,
  .matrix-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

  .process-steps {
    gap: 1rem;
  }

  .hero {
    gap: 2rem;
  }

  .hero-text h1 {
    font-size: 2rem;
  }
}

/* 平板竖屏：768px */
@media (max-width: 768px) {
  .site-nav {
    height: auto;
    min-height: 64px;
    flex-wrap: wrap;
    padding: 0.5rem 1.25rem;
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.8rem 0 1rem;
    gap: 0.1rem;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    padding: 0.6rem 0.5rem;
    width: 100%;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 1.8rem;
    padding-top: 2rem;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }

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

  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

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

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

  .sidebar-left {
    grid-template-columns: 1fr;
  }

  .resource-filter {
    position: static;
  }

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

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

  .site-footer .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.8rem;
  }

  .footer-column:first-child {
    grid-column: 1 / -1;
  }

  .page-header {
    padding-top: 1.5rem;
  }

  .page-title {
    font-size: 1.625rem;
  }

  .dict-item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

/* 手机：480px */
@media (max-width: 480px) {
  .site-nav {
    padding: 0.5rem 1rem;
  }

  .nav-brand a {
    font-size: 1.1rem;
  }

  .hero,
  .services-preview,
  .process-preview,
  .resources-entry,
  .faq-section,
  .cta-section,
  .page-header,
  .breadcrumb,
  .page-layout,
  .layout-shell,
  .timeline-section,
  .impact-summary,
  .related-links,
  .contact-guide {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
  }

  .hero-text h1 {
    font-size: 1.5rem;
  }

  .hero-text p {
    font-size: 0.95rem;
  }

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

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    text-align: center;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .step-item {
    padding-top: 2rem;
  }

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

  .cta-actions .btn-primary,
  .cta-actions .btn-link {
    text-align: center;
  }

  .page-title {
    font-size: 1.5rem;
  }

  .site-footer .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-column:first-child {
    grid-column: 1;
  }

  .timeline-item {
    padding-left: 2rem;
  }

  .timeline-marker time {
    display: none;
  }

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

  .toc-container,
  .toc-box,
  .aside-block {
    padding: 1.2rem;
  }
}