/* ============================================================
   51吃瓜今日吃瓜必吃 · 整站样式
   基础色板：深墨绿 / 米白 / 铜金 / 墨色 / 浅陶土
   字体：衬线标题 + 无衬线正文
   ============================================================ */

/* ============================================================
   Base —— 重置、字体、色彩、通用元素
   ============================================================ */

*, *::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: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: #2e2a24;
  background-color: #f4efe6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: #1f3d36;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #b58a4a;
}

ul, ol {
  list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  line-height: 1.4;
  color: #1f3d36;
  font-weight: 600;
}

h1 {
  font-size: 34px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 0;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
  margin-top: 10px;
}

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

.site-main {
  flex: 1;
}

/* ============================================================
   Layout —— 容器、栅格、通用布局骨架
   ============================================================ */

.site-header {
  background-color: #1f3d36;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-name {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 20px;
  font-weight: 700;
  color: #f4efe6;
  flex-shrink: 0;
}

.brand-name a {
  color: #f4efe6;
  display: block;
  line-height: 1.3;
}

.brand-name a:hover {
  color: #b58a4a;
}

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

.main-nav a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: rgba(244, 239, 230, 0.85);
  border-bottom: 2px solid transparent;
  position: relative;
  white-space: nowrap;
}

.main-nav a:hover {
  color: #f4efe6;
  border-bottom-color: #b58a4a;
}

.main-nav a.is-current {
  color: #f4efe6;
  border-bottom-color: #b58a4a;
  font-weight: 500;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: 4px;
}

.nav-toggle:hover {
  background: rgba(244, 239, 230, 0.1);
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #f4efe6;
  border-radius: 1px;
}

.site-main {
  flex: 1;
}

.inner-main {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 面包屑 */
.breadcrumb {
  padding: 20px 0 8px;
  font-size: 14px;
  color: #6b6359;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.breadcrumb a {
  color: #6b6359;
}

.breadcrumb a:hover {
  color: #1f3d36;
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumb-sep {
  color: #b58a4a;
}

.breadcrumb-current {
  color: #1f3d36;
}

/* 页面标题区 */
.page-header {
  padding: 24px 0 16px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.page-title {
  font-size: 34px;
  color: #1f3d36;
  border-left: 4px solid #b58a4a;
  padding-left: 20px;
  line-height: 1.3;
}

.page-title-area {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 8px 0 32px;
}

.page-title-area p {
  color: #6b6359;
  max-width: 780px;
  line-height: 1.8;
}

.page-lead {
  font-size: 17px;
  color: #2e2a24;
  max-width: 780px;
  line-height: 1.9;
}

.page-intro {
  color: #6b6359;
  max-width: 780px;
}

.page-title-desc {
  color: #6b6359;
  max-width: 780px;
}

/* 通用双栏布局 */
.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

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

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

/* 通用按钮 */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.btn-primary {
  background-color: #1f3d36;
  color: #f4efe6;
  border-color: #1f3d36;
}

.btn-primary:hover {
  background-color: #2a5248;
  color: #f4efe6;
}

.btn-secondary {
  background-color: transparent;
  color: #1f3d36;
  border-color: #1f3d36;
}

.btn-secondary:hover {
  background-color: #1f3d36;
  color: #f4efe6;
}

/* 通用链接行 */
.related-links {
  max-width: 1200px;
  margin: 40px auto 0;
  padding: 20px 24px;
  border-top: 1px solid #e7ddd0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  width: 100%;
}

.related-links-label {
  font-size: 14px;
  color: #6b6359;
  margin-right: 8px;
}

.related-links-item {
  font-size: 14px;
  color: #1f3d36;
  border-bottom: 1px solid #b58a4a;
  padding-bottom: 2px;
}

.related-links-item:hover {
  color: #b58a4a;
}

/* 表格通用 */
.table-wrap {
  overflow-x: auto;
  border-radius: 6px;
  border: 1px solid #e7ddd0;
}

.table-scroll {
  overflow-x: auto;
  border-radius: 6px;
  border: 1px solid #e7ddd0;
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
}

thead {
  background-color: #1f3d36;
}

th {
  color: #f4efe6;
  font-weight: 500;
  text-align: left;
  padding: 14px 16px;
  font-size: 14px;
  white-space: nowrap;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid #e7ddd0;
  vertical-align: top;
  line-height: 1.7;
  color: #2e2a24;
}

tbody tr {
  background-color: #ffffff;
  transition: background-color 0.15s ease;
}

tbody tr:hover {
  background-color: #f4efe6;
}

tbody tr:last-child td {
  border-bottom: none;
}

caption {
  caption-side: top;
  text-align: left;
  font-size: 14px;
  color: #6b6359;
  padding: 12px 4px;
}

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

/* 折叠面板 */
.faq-item {
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  background-color: #ffffff;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 500;
  color: #1f3d36;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  transition: background-color 0.2s ease;
  min-height: 52px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: #b58a4a;
  flex-shrink: 0;
  transition: transform 0.2s ease;
  line-height: 1;
}

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

.faq-item summary:hover {
  background-color: #f4efe6;
}

.faq-item[open] summary {
  border-bottom: 1px solid #e7ddd0;
}

.faq-answer {
  padding: 16px 20px;
  font-size: 15px;
  color: #2e2a24;
  line-height: 1.8;
}

.faq-answer p + p {
  margin-top: 12px;
}

/* 图片媒体 */
.content-media {
  margin: 24px 0;
}

.content-media img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.content-media figcaption {
  font-size: 14px;
  color: #6b6359;
  padding: 10px 4px 0;
  border-left: 3px solid #b58a4a;
  padding-left: 12px;
}

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

.content-media-inline {
  margin: 24px 0;
  max-width: 780px;
}

/* 站内导航卡片 */
.aside-card,
.nav-card,
.sidebar-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 20px;
}

.aside-card h2,
.nav-card .nav-card-title,
.sidebar-card h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #b58a4a;
  color: #1f3d36;
}

.aside-links li,
.nav-card li,
.sidebar-card li {
  margin-bottom: 10px;
}

.aside-links a,
.nav-card a,
.sidebar-card a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  color: #2e2a24;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
  border-radius: 0 4px 4px 0;
}

.aside-links a:hover,
.nav-card a:hover,
.sidebar-card a:hover {
  color: #1f3d36;
  border-left-color: #b58a4a;
  background-color: #f4efe6;
}

/* 勾选列表 */
.check-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  line-height: 1.7;
  font-size: 15px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  border: 2px solid #b58a4a;
  border-radius: 3px;
  background-color: transparent;
}

/* ============================================================
   Header / Footer —— 页头与页脚
   ============================================================ */

.site-footer {
  background-color: #1f3d36;
  color: rgba(244, 239, 230, 0.8);
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr;
  gap: 48px;
}

.footer-brand-name {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 20px;
  font-weight: 700;
  color: #f4efe6;
  margin-bottom: 12px;
}

.footer-brand p:last-child {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.7);
}

.footer-col-title {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: #f4efe6;
  margin-bottom: 16px;
}

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

.footer-nav a {
  color: rgba(244, 239, 230, 0.7);
  font-size: 14px;
}

.footer-nav a:hover {
  color: #b58a4a;
}

.footer-compliance p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.7);
}

.footer-bottom {
  border-top: 1px solid rgba(244, 239, 230, 0.15);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(244, 239, 230, 0.5);
  max-width: 1200px;
  margin: 0 auto;
}

/* ============================================================
   Home —— 首页专有模块
   ============================================================ */

.home-main {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding: 0 24px 64px;
}

/* Hero */
.hero-comparison {
  padding: 48px 0 24px;
}

.hero-text {
  max-width: 780px;
}

.hero-text h1 {
  font-size: 36px;
  margin-bottom: 12px;
  line-height: 1.35;
}

.hero-slogan {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 18px;
  color: #b58a4a;
  margin-bottom: 16px;
  font-style: italic;
}

.hero-description {
  font-size: 16px;
  color: #2e2a24;
  line-height: 1.9;
  max-width: 720px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-figure {
  margin: 32px 0 24px;
}

.hero-figure img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.hero-figure figcaption {
  border-left: 3px solid #b58a4a;
  padding-left: 12px;
  margin-top: 12px;
}

.hero-comparison-table {
  margin: 32px 0;
  overflow-x: auto;
  border-radius: 6px;
  border: 1px solid #e7ddd0;
}

.hero-comparison-table table {
  min-width: 720px;
}

.table-note {
  font-size: 13px;
  color: #6b6359;
  margin-top: 10px;
  padding-left: 4px;
}

.hero-process-preview {
  font-size: 14px;
  color: #6b6359;
  margin-top: 20px;
  padding: 14px 18px;
  background-color: #ffffff;
  border-left: 3px solid #b58a4a;
  border-radius: 0 6px 6px 0;
  line-height: 1.7;
}

/* 区块通用 */
.section-intro {
  color: #6b6359;
  max-width: 720px;
  margin-bottom: 32px;
}

section > h2 {
  margin-bottom: 8px;
}

/* 状态总览 */
.status-overview {
  padding: 48px 0;
}

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

.status-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 28px 24px;
  text-align: left;
}

.status-number {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 40px;
  font-weight: 700;
  color: #b58a4a;
  line-height: 1.2;
  margin-bottom: 8px;
}

.status-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.status-card p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
}

/* 风险列表 */
.risk-list-section {
  padding: 48px 0;
}

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

.risk-item {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 28px;
  border-top: 3px solid #b58a4a;
}

.risk-item h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.risk-signal {
  font-size: 15px;
  color: #2e2a24;
  line-height: 1.7;
  margin-bottom: 8px;
}

.risk-target {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
}

/* 动作对照表 */
.action-table-section {
  padding: 48px 0;
}

.action-table {
  border-radius: 6px;
  border: 1px solid #e7ddd0;
  overflow: hidden;
}

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

/* 阶段轨道 */
.phase-track-section {
  padding: 48px 0;
}

.phase-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}

.phase-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
  position: relative;
}

.phase-node {
  display: inline-block;
  background-color: #b58a4a;
  color: #f4efe6;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.phase-card h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.phase-period,
.phase-place,
.phase-status {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
  margin-bottom: 4px;
}

.section-link {
  display: inline-block;
  margin-top: 24px;
  font-size: 15px;
  color: #1f3d36;
  border-bottom: 2px solid #b58a4a;
  padding-bottom: 2px;
}

.section-link:hover {
  color: #b58a4a;
}

/* 场景预览 */
.scene-preview-section {
  padding: 48px 0;
}

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

.scene-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.scene-card h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.scene-card p {
  font-size: 15px;
  color: #2e2a24;
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.scene-card a {
  font-size: 14px;
  color: #b58a4a;
  font-weight: 500;
  display: inline-block;
}

.scene-card a:hover {
  color: #1f3d36;
}

/* FAQ 预览 */
.faq-preview-section {
  padding: 48px 0;
}

.faq-preview-list {
  max-width: 780px;
}

/* CTA 横幅 */
.cta-banner {
  background-color: #1f3d36;
  border-radius: 6px;
  padding: 48px;
  margin: 48px 0;
  color: #f4efe6;
}

.cta-banner h2 {
  color: #f4efe6;
  font-size: 24px;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(244, 239, 230, 0.85);
  font-size: 16px;
  max-width: 640px;
  margin-bottom: 24px;
}

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

.cta-banner .btn-primary {
  background-color: #b58a4a;
  border-color: #b58a4a;
  color: #f4efe6;
}

.cta-banner .btn-primary:hover {
  background-color: #c69c5e;
}

.cta-banner .btn-secondary {
  border-color: rgba(244, 239, 230, 0.6);
  color: #f4efe6;
}

.cta-banner .btn-secondary:hover {
  background-color: rgba(244, 239, 230, 0.1);
}

/* ============================================================
   Services —— 服务矩阵页
   ============================================================ */

.service-matrix-section,
.indicator-group-section,
.delivery-forms-section,
.boundary-note-section {
  margin-bottom: 48px;
}

.service-matrix-section h2,
.indicator-group-section h2,
.delivery-forms-section h2,
.boundary-note-section h2 {
  margin-bottom: 8px;
}

.service-matrix-section > p,
.indicator-group-section > p,
.delivery-forms-section > p,
.boundary-note-section > p {
  color: #6b6359;
  margin-bottom: 24px;
  max-width: 720px;
}

.service-scene-figure {
  margin-bottom: 24px;
}

.service-scene-figure img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.service-matrix-table {
  min-width: 800px;
}

.indicator-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.indicator-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
}

.indicator-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #1f3d36;
}

.indicator-card p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

.delivery-list li {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 20px 24px;
  margin-bottom: 12px;
}

.delivery-list h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.delivery-list p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

.boundary-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  font-size: 15px;
  color: #2e2a24;
  line-height: 1.7;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background-color: #b58a4a;
  border-radius: 2px;
}

/* ============================================================
   Scenes —— 应用场景页
   ============================================================ */

.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.sidebar-column {
  min-width: 0;
}

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

.condition-card,
.output-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 20px;
}

.condition-card h2,
.output-card h2 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid #b58a4a;
}

.condition-card > p {
  font-size: 14px;
  color: #6b6359;
  margin-bottom: 16px;
}

.condition-note {
  font-size: 13px;
  color: #6b6359;
  background-color: #f4efe6;
  padding: 12px;
  border-radius: 4px;
  margin-top: 16px;
  line-height: 1.6;
}

.output-list li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid #e7ddd0;
}

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

.output-name {
  font-size: 15px;
  font-weight: 500;
  color: #1f3d36;
}

.output-use {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
}

.scene-card-group {
  margin-bottom: 40px;
}

.scene-card-group h2 {
  margin-bottom: 24px;
}

.scene-card-group .scene-card {
  margin-bottom: 20px;
  flex-direction: row;
  gap: 24px;
  padding: 0;
  overflow: hidden;
}

.scene-card-media {
  width: 260px;
  flex-shrink: 0;
}

.scene-card-media figure {
  height: 100%;
}

.scene-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

.scene-card-body {
  padding: 24px 24px 24px 0;
  flex: 1;
}

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

.scene-card-body > p {
  font-size: 15px;
  color: #2e2a24;
  line-height: 1.7;
  margin-bottom: 12px;
}

.scene-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  font-size: 14px;
}

.scene-detail div {
  display: flex;
  gap: 8px;
}

.scene-detail dt {
  color: #b58a4a;
  font-weight: 500;
  flex-shrink: 0;
  min-width: 72px;
}

.scene-detail dd {
  color: #6b6359;
  line-height: 1.6;
}

.next-step-links {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 28px;
}

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

.next-step-pair {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.next-link {
  display: block;
  padding: 20px;
  background-color: #f4efe6;
  border-radius: 6px;
  border-left: 3px solid #b58a4a;
}

.next-link:hover {
  background-color: #e7ddd0;
}

.next-link-title {
  display: block;
  font-size: 16px;
  font-weight: 500;
  color: #1f3d36;
  margin-bottom: 4px;
}

.next-link-desc {
  display: block;
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
}

/* ============================================================
   Process —— 合作流程页
   ============================================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.section-title {
  margin-bottom: 8px;
  font-size: 24px;
}

.phase-track-section > p {
  color: #6b6359;
  max-width: 720px;
  margin-bottom: 24px;
}

.phase-track-section .phase-track {
  margin-top: 32px;
}

.phase-track-section .phase-card {
  border-top: 3px solid #b58a4a;
}

.phase-track-section .phase-card dl {
  margin: 12px 0;
}

.phase-track-section .phase-meta {
  display: flex;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 4px;
}

.phase-track-section .phase-meta dt {
  color: #b58a4a;
  flex-shrink: 0;
  min-width: 40px;
  font-weight: 500;
}

.phase-track-section .phase-meta dd {
  color: #6b6359;
}

.phase-track-section .phase-card > p {
  font-size: 14px;
  color: #2e2a24;
  line-height: 1.7;
  margin-top: 8px;
}

.phase-confirm {
  font-size: 13px;
  color: #6b6359;
  background-color: #f4efe6;
  padding: 8px 12px;
  border-radius: 4px;
  margin-top: 12px;
  line-height: 1.6;
}

.deliverable-section,
.cooperation-section,
.review-section {
  margin-top: 48px;
}

.deliverable-section > p,
.cooperation-section > p,
.review-section > p {
  color: #6b6359;
  margin-bottom: 24px;
  max-width: 720px;
}

.deliverable-table {
  min-width: 720px;
}

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

.cooperation-col {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 28px;
}

.cooperation-col h3 {
  font-size: 17px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #b58a4a;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.review-item {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
}

.review-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #1f3d36;
}

.review-item p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

.cta-banner[aria-label="下一步行动"] {
  margin-top: 48px;
}

.cta-text {
  font-size: 18px;
  margin-bottom: 20px;
}

.cta-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   Guide —— 数据解读页
   ============================================================ */

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

.report-structure,
.indicator-semantic-table,
.reading-steps,
.usage-boundary {
  margin-bottom: 48px;
}

.report-structure h2,
.indicator-semantic-table h2,
.reading-steps h2,
.usage-boundary h2 {
  margin-bottom: 8px;
}

.report-structure > p,
.indicator-semantic-table > p,
.reading-steps > p,
.usage-boundary > p {
  color: #6b6359;
  margin-bottom: 24px;
  max-width: 720px;
}

.report-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.flow-item {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
  position: relative;
}

.flow-step {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 13px;
  color: #b58a4a;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}

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

.flow-item p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
}

.report-figure {
  margin: 24px 0;
}

.report-figure img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.indicator-semantic-table table {
  min-width: 720px;
}

.step-list {
  counter-reset: step;
}

.step-list li {
  position: relative;
  padding: 20px 20px 20px 64px;
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  margin-bottom: 12px;
}

.step-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 32px;
  height: 32px;
  background-color: #1f3d36;
  color: #f4efe6;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
}

.step-list h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.step-list p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

.boundary-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.boundary-card {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 24px;
}

.boundary-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #1f3d36;
}

.boundary-card p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

/* ============================================================
   FAQ —— 常见问题页
   ============================================================ */

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

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

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

.faq-group h2 {
  font-size: 20px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #b58a4a;
}

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

.category-nav ul li a {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  color: #2e2a24;
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
  border-radius: 0 4px 4px 0;
}

.category-nav ul li a:hover {
  color: #1f3d36;
  border-left-color: #b58a4a;
  background-color: #f4efe6;
}

.compliance-note p {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
  margin-bottom: 10px;
}

.further-links ul li a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  color: #1f3d36;
  border-bottom: 1px solid #e7ddd0;
}

.further-links ul li a:hover {
  color: #b58a4a;
}

/* ============================================================
   About —— 关于我们页
   ============================================================ */

.philosophy-statement,
.image-statement,
.cooperation-pact,
.boundary-declaration,
.site-map-nav {
  margin-bottom: 56px;
}

.statement-head,
.pact-head,
.boundary-head {
  margin-bottom: 28px;
}

.section-label {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 14px;
  font-weight: 600;
  color: #b58a4a;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.statement-intro,
.pact-intro,
.boundary-intro,
.site-map-intro {
  font-size: 18px;
  color: #2e2a24;
  line-height: 1.8;
  max-width: 720px;
}

.statement-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.statement-item {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 28px;
}

.statement-index {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 28px;
  font-weight: 700;
  color: #b58a4a;
  margin-bottom: 12px;
  line-height: 1;
}

.statement-item h2 {
  font-size: 17px;
  margin-bottom: 10px;
}

.statement-item p {
  font-size: 15px;
  color: #2e2a24;
  line-height: 1.7;
}

.statement-figure {
  max-width: 780px;
}

.statement-figure img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.statement-figure figcaption {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-left: 3px solid #b58a4a;
  border-radius: 0 6px 6px 0;
  padding: 20px;
  margin-top: 12px;
}

.figcaption-title {
  font-size: 16px;
  font-weight: 500;
  color: #1f3d36;
  margin-bottom: 6px;
}

.figcaption-desc {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

.pact-list li,
.boundary-list li {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 20px 24px;
  margin-bottom: 12px;
  position: relative;
  padding-left: 56px;
}

.pact-item::before,
.boundary-item::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 24px;
  width: 8px;
  height: 8px;
  background-color: #b58a4a;
  border-radius: 2px;
}

.pact-title,
.boundary-title {
  font-size: 16px;
  font-weight: 500;
  color: #1f3d36;
  margin-bottom: 6px;
}

.pact-detail,
.boundary-detail {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.7;
}

.site-map-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.site-map-list li {
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.site-map-list a {
  font-size: 16px;
  font-weight: 500;
  color: #1f3d36;
}

.site-map-list a:hover {
  color: #b58a4a;
}

.site-map-list span {
  font-size: 14px;
  color: #6b6359;
  line-height: 1.6;
}

/* ============================================================
   404 —— 错误页
   ============================================================ */

.error-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
}

.error-panel {
  max-width: 560px;
  text-align: center;
  background-color: #ffffff;
  border: 1px solid #e7ddd0;
  border-radius: 6px;
  padding: 48px;
}

.error-code {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  font-size: 64px;
  font-weight: 700;
  color: #b58a4a;
  line-height: 1;
  margin-bottom: 16px;
}

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

.error-desc {
  font-size: 15px;
  color: #6b6359;
  margin-bottom: 24px;
}

.error-back-btn {
  display: inline-block;
  background-color: #1f3d36;
  color: #f4efe6;
  padding: 12px 32px;
  border-radius: 6px;
  font-size: 15px;
  margin-bottom: 24px;
}

.error-back-btn:hover {
  background-color: #2a5248;
  color: #f4efe6;
}

.error-help {
  font-size: 14px;
  color: #6b6359;
}

.error-help a {
  color: #1f3d36;
  margin: 0 8px;
  border-bottom: 1px solid #b58a4a;
  padding-bottom: 1px;
}

.error-help a:hover {
  color: #b58a4a;
}

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

@media (max-width: 992px) {
  .header-inner {
    padding: 0 16px;
  }

  .main-nav a {
    padding: 8px 10px;
    font-size: 14px;
  }

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

  .phase-track {
    grid-template-columns: repeat(3, 1fr);
  }

  .phase-card:nth-child(4),
  .phase-card:nth-child(5) {
    grid-column: span 1;
  }

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

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

  .layout-shell {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 24px;
  }

  .faq-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 24px;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 24px;
  }

  .scene-card-group .scene-card {
    flex-direction: column;
  }

  .scene-card-media {
    width: 100%;
    height: 200px;
  }

  .scene-card-body {
    padding: 20px;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

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

  .nav-toggle {
    display: flex;
  }

  .main-nav.site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: #1f3d36;
    border-top: 1px solid rgba(244, 239, 230, 0.15);
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .main-nav.site-nav.is-open {
    max-height: 480px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0 16px;
  }

  .main-nav a {
    padding: 12px 8px;
    border-bottom: none;
    border-left: 2px solid transparent;
    font-size: 15px;
  }

  .main-nav a:hover,
  .main-nav a.is-current {
    border-bottom: none;
    border-left-color: #b58a4a;
  }

  .inner-main {
    padding: 0 16px 48px;
  }

  .breadcrumb {
    padding: 16px 16px 8px;
  }

  .page-header {
    padding: 20px 0 12px;
  }

  .page-title {
    font-size: 26px;
    padding-left: 14px;
  }

  .home-main {
    padding: 0 16px 48px;
  }

  .hero-comparison {
    padding: 32px 0 16px;
  }

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

  .hero-slogan {
    font-size: 16px;
  }

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

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

  .status-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

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

  .scene-preview-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .phase-track {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .layout-shell,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .content-aside,
  .faq-sidebar {
    order: 2;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .sidebar-column {
    order: 2;
  }

  .content-column {
    order: 1;
  }

  .indicator-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

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

  .boundary-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

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

  .next-step-pair {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .report-flow {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .cta-banner {
    padding: 32px 24px;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 16px 24px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .related-links {
    padding: 16px;
    gap: 8px;
  }

  .table-scroll,
  .table-wrap {
    margin-bottom: 16px;
  }

  .hero-comparison-table {
    margin: 24px -16px;
    border-radius: 0;
    border-left: none;
    border-right: none;
    width: calc(100% + 32px);
  }

  .error-panel {
    padding: 32px 20px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

  h3 {
    font-size: 16px;
  }

  .header-inner {
    padding: 0 12px;
    height: 60px;
  }

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

  .main-nav.site-nav {
    top: 60px;
  }

  .status-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .status-card {
    padding: 20px;
  }

  .status-number {
    font-size: 32px;
  }

  .risk-item {
    padding: 20px;
  }

  .scene-card {
    padding: 20px;
  }

  .phase-card {
    padding: 20px;
  }

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

  .breadcrumb {
    font-size: 13px;
  }

  .footer-inner {
    padding: 32px 12px 20px;
  }

  .footer-bottom {
    padding: 16px 12px;
  }

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

  .related-links-label {
    margin-right: 0;
  }

  .hero-text h1 {
    font-size: 24px;
  }

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

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

  .hero-process-preview {
    font-size: 13px;
  }

  .section-intro {
    font-size: 14px;
  }

  .cta-banner {
    padding: 28px 20px;
  }

  .cta-banner h2 {
    font-size: 20px;
  }

  .flow-item,
  .indicator-card,
  .boundary-card,
  .cooperation-col,
  .review-item,
  .statement-item {
    padding: 20px;
  }

  .step-list li {
    padding: 16px 16px 16px 52px;
  }

  .step-list li::before {
    left: 14px;
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .pact-list li,
  .boundary-list li {
    padding: 16px 16px 16px 44px;
  }

  .pact-item::before,
  .boundary-item::before {
    left: 18px;
    top: 20px;
  }

  .site-map-list li {
    padding: 16px;
  }

  .error-code {
    font-size: 48px;
  }

  .error-panel {
    padding: 28px 16px;
  }
}