/* ==========================================================================
   黑料吃瓜网 - 整站样式表
   基础色板：米白纸张底 #f5f3ed / 深蓝档案色 #1e3a5f / 橙红强调 #c2410c
   正文色 #1f2933 / 边线 #e2e0d8
   ========================================================================== */

/* ==========================================================================
   Base - 基础重置与全局变量
   ========================================================================== */

:root {
  --color-bg: #f5f3ed;
  --color-primary: #1e3a5f;
  --color-accent: #c2410c;
  --color-text: #1f2933;
  --color-border: #e2e0d8;
  --color-white: #ffffff;
  --color-muted: #6b7280;
  --font-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 3px rgba(30, 58, 95, 0.08);
}

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

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

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;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

.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 - 通用布局容器
   ========================================================================== */

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

/* ==========================================================================
   Components - 页头与导航
   ========================================================================== */

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-brand {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
}

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

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

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-list li {
  position: relative;
}

.nav-list a {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

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

.nav-list a:hover::after,
.nav-list a.is-current::after {
  transform: scaleX(1);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.nav-toggle-icon {
  display: block;
  position: relative;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  transition: background-color 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  transition: transform 0.2s ease;
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

/* ==========================================================================
   Components - 页脚
   ========================================================================== */

.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  margin-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-top: 48px;
  padding-bottom: 40px;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  max-width: 320px;
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 20px 0;
}

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

/* ==========================================================================
   Components - 面包屑
   ========================================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--color-primary);
  font-size: 14px;
}

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

.breadcrumb-sep {
  color: var(--color-muted);
  font-size: 13px;
}

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

/* ==========================================================================
   Components - 页面标题区
   ========================================================================== */

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

.page-title {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 760px;
}

/* ==========================================================================
   Components - 区块通用
   ========================================================================== */

.section-block {
  padding: 56px 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.section-intro {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 760px;
}

.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-accent);
  margin-top: 20px;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.text-link:hover {
  border-bottom-color: var(--color-accent);
}

/* ==========================================================================
   Components - 步骤条
   ========================================================================== */

.step-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.step-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
}

.step-list h2,
.step-list h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.step-list p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.process-steps li {
  position: relative;
  padding: 24px 16px 20px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-card);
}

.process-steps li::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -14px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-accent);
  transform: translateY(-50%);
}

.process-steps li:last-child::after {
  display: none;
}

.step-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.process-steps h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.process-steps p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
}

/* ==========================================================================
   Components - 卡片
   ========================================================================== */

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.service-card:hover {
  box-shadow: 0 4px 12px rgba(30, 58, 95, 0.12);
  transform: translateY(-2px);
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.service-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

.service-card a:hover {
  text-decoration: underline;
}

.archive-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
}

.archive-card h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.archive-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.source-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.source-note {
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  margin-top: 12px;
}

.archive-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

.archive-card a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Components - 手风琴 FAQ
   ========================================================================== */

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

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

.faq-item summary:hover {
  color: var(--color-primary);
}

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

.faq-answer {
  padding: 16px 20px;
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer a {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
}

/* ==========================================================================
   Components - 来源条目
   ========================================================================== */

.source-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
}

.source-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background-color: rgba(30, 58, 95, 0.08);
  color: var(--color-primary);
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
}

.source-item h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.source-item p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
}

/* ==========================================================================
   Components - 警示框
   ========================================================================== */

.notice-box {
  background-color: var(--color-white);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 28px 32px;
  box-shadow: var(--shadow-card);
}

.notice-box h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.notice-box p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 16px;
}

.notice-box a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}

/* ==========================================================================
   Components - 内页侧栏
   ========================================================================== */

.sidebar {
  width: 100%;
}

.sidebar-card,
.sidebar-box {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
}

.sidebar-title,
.sidebar-heading {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-links li {
  margin-bottom: 10px;
}

.sidebar-links a {
  font-size: 14px;
  color: var(--color-text);
  padding-left: 12px;
  position: relative;
}

.sidebar-links a::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: 16px;
  line-height: 1.2;
}

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

/* ==========================================================================
   Components - 表格
   ========================================================================== */

.param-table,
.citation-table {
  width: 100%;
  font-size: 14px;
  line-height: 1.6;
}

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

.param-table thead th,
.citation-table thead th {
  background-color: rgba(30, 58, 95, 0.06);
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
}

.param-table tbody tr:nth-child(even),
.citation-table tbody tr:nth-child(even) {
  background-color: rgba(245, 243, 237, 0.5);
}

.param-table tbody tr:last-child td,
.citation-table tbody tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   Components - 图片容器
   ========================================================================== */

.content-media,
.content-figure,
.research-figure {
  margin: 32px 0;
}

.content-media img,
.content-figure img,
.research-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.content-media figcaption,
.content-figure figcaption,
.research-figure figcaption {
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
  margin-top: 10px;
  line-height: 1.5;
}

/* ==========================================================================
   Pages - 首页
   ========================================================================== */

/* 首屏 Hero 步骤区 */
.hero-steps {
  padding: 56px 0 32px;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-step-list {
  margin-bottom: 28px;
}

.cta-button {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.cta-button:hover {
  background-color: #a0350a;
  color: var(--color-white);
}

.hero-media {
  margin: 0;
}

.hero-media img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.content-media-primary {
  margin: 32px 0 0;
}

.content-media-primary img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.content-media-primary figcaption {
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
  margin-top: 10px;
}

/* 服务矩阵 */
.service-matrix {
  padding: 56px 0;
}

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

/* 流程预览 */
.process-preview {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0;
}

/* 专题摘要 */
.research-summary {
  padding: 56px 0;
}

.research-summary .archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 常见问题摘要 */
.faq-summary {
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0;
}

/* 资料来源说明 */
.source-types {
  padding: 56px 0;
}

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

/* 服务边界提示 */
.boundary-notice {
  padding: 0 0 56px;
}

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

.inner-main {
  padding: 40px 0 0;
}

.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
  padding-bottom: 56px;
}

.main-content {
  min-width: 0;
  min-height: 400px;
}

.main-content > .section-block {
  padding: 0 0 40px;
}

/* ==========================================================================
   Pages - 核心服务页
   ========================================================================== */

.service-overview {
  margin-bottom: 40px;
}

.overview-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.overview-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.item-title {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
}

.item-desc {
  font-size: 14px;
  color: var(--color-muted);
  flex: 1;
}

.item-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  white-space: nowrap;
}

.item-link:hover {
  text-decoration: underline;
}

.service-params {
  margin-top: 40px;
}

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

.param-group-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
}

.param-table th {
  width: 140px;
  white-space: nowrap;
}

.service-advice {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-top: 40px;
}

.service-advice p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 12px;
}

.service-advice p:last-child {
  margin-bottom: 0;
}

/* 相关链接条 */
.related-links {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  margin-top: 40px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

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

.related-links-item {
  font-size: 14px;
  color: var(--color-text);
  padding: 6px 14px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ==========================================================================
   Pages - 合作流程页
   ========================================================================== */

.page-process .page-layout {
  grid-template-columns: 1fr 300px;
}

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

.content-section {
  margin-bottom: 48px;
}

/* 赛程表 */
.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.schedule-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

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

.schedule-step {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.schedule-item::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 80px;
  bottom: -24px;
  width: 2px;
  background-color: var(--color-border);
}

.schedule-item:last-child::before {
  display: none;
}

.step-content {
  padding-top: 4px;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 10px;
}

.step-output {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: rgba(194, 65, 12, 0.08);
  padding: 4px 12px;
  border-radius: 20px;
}

/* 客户配合清单 */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.checklist-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.checklist-stage {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.checklist-item ul li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  padding-left: 16px;
  position: relative;
  margin-bottom: 6px;
}

.checklist-item ul li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

/* 流程说明 */
.notes-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 14px;
}

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

/* ==========================================================================
   Pages - 专题研究页
   ========================================================================== */

.research-archive {
  margin-bottom: 48px;
}

.research-archive h2,
.research-limits h2,
.framework-note h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.research-archive > p,
.research-limits > p,
.framework-note > p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 20px;
}

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

.research-limits {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 48px;
}

.limit-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.limit-list li {
  padding-left: 20px;
  position: relative;
}

.limit-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.limit-list h3 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.limit-list p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.framework-note {
  margin-bottom: 32px;
}

.framework-note p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 12px;
}

/* ==========================================================================
   Pages - 资料来源页
   ========================================================================== */

.source-types-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.source-type-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.source-type-card h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.source-type-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.citation-rules-section {
  margin-bottom: 40px;
}

.citation-table-wrap {
  overflow-x: auto;
}

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

.rules-note {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 14px;
  line-height: 1.6;
}

.internal-links-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 40px;
}

.related-links-list li {
  margin-bottom: 10px;
}

.related-links-list a {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
}

.related-links-list a:hover {
  color: var(--color-accent);
}

.sidebar-figure {
  margin: 20px 0 0;
}

.sidebar-figure img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.sidebar-figure figcaption {
  font-size: 12px;
  color: var(--color-muted);
  text-align: center;
  margin-top: 8px;
  line-height: 1.5;
}

/* ==========================================================================
   Pages - 常见问题页
   ========================================================================== */

.page-heading-wrap {
  padding-top: 40px;
}

.page-faq .page-layout {
  padding-top: 0;
}

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

.faq-section .faq-item {
  margin-bottom: 12px;
}

.faq-item .faq-answer p {
  margin-bottom: 10px;
}

.faq-item .faq-answer p:last-child {
  margin-bottom: 0;
}

.summary-section {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-card);
}

.summary-box {
  margin-top: 16px;
}

.summary-list li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  padding-left: 20px;
  position: relative;
  margin-bottom: 10px;
}

.summary-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 16px;
}

.summary-list li:last-child {
  margin-bottom: 0;
}

.summary-note {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: 16px;
}

.summary-note a {
  color: var(--color-accent);
  font-weight: 500;
}

/* ==========================================================================
   Pages - 服务边界页
   ========================================================================== */

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

.boundary-summary .summary-box {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.boundary-summary .summary-box > p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 16px;
}

.boundary-figure {
  margin: 20px 0 0;
}

.boundary-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.boundary-figure figcaption {
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
  margin-top: 8px;
}

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

.limit-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin-bottom: 12px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.limit-item::before {
  content: "✕";
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1.5;
}

.limit-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
}

.boundary-basis {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.basis-list {
  counter-reset: basis-counter;
  margin-bottom: 16px;
}

.basis-list li {
  counter-increment: basis-counter;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  padding-left: 36px;
  position: relative;
  margin-bottom: 12px;
}

.basis-list li::before {
  content: counter(basis-counter);
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
}

.basis-closing {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 16px;
}

.basis-closing a {
  display: inline-block;
  color: var(--color-accent);
  font-weight: 500;
  margin-right: 16px;
}

.basis-closing a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Pages - 404 页面
   ========================================================================== */

.error-main {
  min-height: calc(100vh - 72px - 320px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 0;
}

.error-container {
  text-align: center;
  max-width: 560px;
}

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

.error-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-bottom: 28px;
}

.error-btn {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

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

/* 平板与窄桌面 */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .nav-list {
    gap: 20px;
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .process-steps li::after {
    display: none;
  }

  .hero-layout {
    gap: 32px;
  }

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

  .matrix-grid,
  .research-summary .archive-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-layout {
    grid-template-columns: 1fr 260px;
    gap: 28px;
  }
}

/* 手机端 */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    height: 60px;
  }

  .site-brand {
    font-size: 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
    z-index: 99;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
  }

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

  .nav-list li {
    border-bottom: 1px solid var(--color-border);
  }

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

  .nav-list a {
    display: block;
    padding: 14px 20px;
    font-size: 16px;
  }

  .nav-list a::after {
    display: none;
  }

  /* 首页 */
  .hero-steps {
    padding: 32px 0 24px;
  }

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

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-media img {
    height: 220px;
  }

  .content-media-primary img {
    height: 180px;
  }

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

  .matrix-grid,
  .research-summary .archive-grid,
  .source-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .process-steps li {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px;
  }

  .process-steps li::after {
    display: none;
  }

  .step-label {
    margin-bottom: 4px;
  }

  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-top: 40px;
    padding-bottom: 32px;
  }

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

  /* 内页 */
  .inner-main {
    padding: 24px 0 0;
  }

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

  .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 40px;
  }

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

  .sidebar {
    order: 2;
  }

  .sidebar-card,
  .sidebar-box {
    margin-bottom: 16px;
  }

  /* 核心服务页 */
  .overview-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 16px 20px;
  }

  .item-link {
    white-space: normal;
  }

  .param-table {
    display: block;
    overflow-x: auto;
  }

  .param-table th {
    width: auto;
    min-width: 100px;
  }

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

  /* 合作流程页 */
  .schedule-item {
    grid-template-columns: 48px 1fr;
    gap: 16px;
    padding: 20px 0;
  }

  .schedule-step {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }

  .schedule-item::before {
    left: 23px;
    top: 68px;
  }

  .checklist-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 专题研究页 */
  .research-archive .archive-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .research-limits,
  .framework-note {
    padding: 20px;
  }

  /* 资料来源页 */
  .source-types-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .citation-table-wrap {
    overflow-x: auto;
  }

  /* 常见问题页 */
  .page-heading-wrap {
    padding-top: 24px;
  }

  .summary-section {
    padding: 20px;
  }

  /* 服务边界页 */
  .boundary-summary .summary-box {
    padding: 20px;
  }

  .limit-item {
    padding: 16px 20px;
  }

  .boundary-basis {
    padding: 20px;
  }

  /* 图片 */
  .content-media img,
  .content-figure img,
  .research-figure img {
    height: 200px;
  }

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

  .error-title {
    font-size: 22px;
  }
}

/* 小手机 */
@media (max-width: 390px) {
  .container {
    padding: 0 12px;
  }

  .hero-copy h1 {
    font-size: 22px;
  }

  .step-list li {
    gap: 12px;
  }

  .step-num {
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .schedule-item {
    grid-template-columns: 40px 1fr;
    gap: 12px;
  }

  .schedule-step {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  .schedule-item::before {
    left: 19px;
    top: 60px;
  }

  .page-title {
    font-size: 22px;
  }

  .footer-grid {
    gap: 24px;
  }
}