/* ==========================================================================
   网曝吃瓜 全站样式表
   法律专业风：衬线标题 + 无衬线正文 + 深藏蓝/米白 + 暗金强调
   ========================================================================== */

/* ==========================================================================
   Base — 基础重置、变量、字体、通用元素
   ========================================================================== */

:root {
  --color-primary: #1F3A5F;
  --color-primary-dark: #16293F;
  --color-bg: #F7F4EC;
  --color-bg-light: #FFFFFF;
  --color-text: #333333;
  --color-text-mid: #666666;
  --color-bg-gray: #EFEDE5;
  --color-accent: #A88252;
  --color-border: #D8D2C5;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1140px;
  --content-max: 860px;
  --radius: 6px;
  --radius-sm: 4px;
  --transition: 0.25s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

strong {
  font-weight: 600;
}

/* 通用容器 */
.container,
.header-inner,
.footer-inner,
.hero-section,
.section-block,
.inner-main {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   Layout — 页头、页脚、主内容骨架
   ========================================================================== */

/* ---------- 页头 ---------- */

.site-header {
  background-color: var(--color-primary);
  border-bottom: 3px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 20px;
}

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

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

.brand-tagline {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}

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

.main-nav .nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.main-nav .nav-link:hover {
  color: #FFFFFF;
  border-bottom-color: var(--color-accent);
}

.main-nav .nav-link.is-current {
  color: #FFFFFF;
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}

.toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #FFFFFF;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 页脚 ---------- */

.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  margin-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-top: 48px;
  padding-bottom: 40px;
}

.footer-col h3 {
  color: #FFFFFF;
  font-size: 16px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom p {
  margin-bottom: 4px;
}

.footer-bottom .copyright {
  margin-bottom: 0;
}

/* ---------- 主内容骨架构件 ---------- */

.site-main {
  min-height: 60vh;
}

.inner-main {
  padding-top: 32px;
  padding-bottom: 48px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-mid);
  margin-bottom: 20px;
}

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

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

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

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

/* 页面标题区 */
.page-header {
  margin-bottom: 28px;
}

.page-title {
  font-size: 28px;
  color: var(--color-primary);
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-border);
  position: relative;
}

.page-title::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 72px;
  height: 2px;
  background-color: var(--color-accent);
}

/* 页面描述区 */
.page-heading,
.page-title-area {
  max-width: var(--content-max);
  margin-bottom: 36px;
  color: var(--color-text-mid);
}

.page-heading p,
.page-title-area p {
  font-size: 15px;
  line-height: 1.8;
}

/* 模块标题 */
.section-title,
.section-heading h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.section-desc,
.section-heading p {
  color: var(--color-text-mid);
  margin-bottom: 24px;
  max-width: var(--content-max);
}

/* 相关指南链接 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

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

.related-links-item {
  font-size: 14px;
  color: var(--color-primary);
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg-light);
  transition: all var(--transition);
}

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

/* 页级标识（仅用于隔离，不改变全局样式） */
.site-home,
.site-inner,
.site-error {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-home .site-main,
.site-inner .site-main,
.site-error .site-main {
  flex: 1;
}

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

/* ---------- 按钮 ---------- */

.btn-primary,
.btn-secondary,
.btn-home {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius);
  text-align: center;
  transition: all var(--transition);
  min-height: 44px;
  line-height: 1.4;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

.btn-home {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border: 1px solid var(--color-primary);
}

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

/* ---------- 文本链接 ---------- */

.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: 2px;
  transition: color var(--transition);
}

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

/* ---------- 表格 ---------- */

.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg-light);
}

table.compare-table,
table.outcome-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
}

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

.compare-table thead th,
.outcome-table thead th {
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
}

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

.compare-table tbody tr:hover,
.outcome-table tbody tr:hover {
  background-color: var(--color-bg-gray);
}

/* ---------- 图文卡片（房型布局） ---------- */

.service-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-bg-light);
  margin-bottom: 24px;
}

.service-card-media {
  position: relative;
  min-height: 220px;
  overflow: hidden;
}

.service-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.service-card-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

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

.service-card-body p {
  color: var(--color-text-mid);
  margin-bottom: 16px;
}

.condition-list {
  margin-bottom: 16px;
}

.condition-list li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-mid);
}

.condition-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
}

/* 内页房型卡变体 */
.service-card-room .service-card-media {
  min-height: 260px;
}

/* ---------- FAQ 折叠 ---------- */

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg-light);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 44px;
  transition: background-color var(--transition);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
  font-weight: 400;
}

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

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

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

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

.faq-item .faq-answer a,
.faq-item > p a {
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-accent);
}

/* ---------- 滚动出现动画（渐进增强） ---------- */

@media (prefers-reduced-motion: no-preference) {
  .section-block {
    animation: fadeInUp 0.6s ease both;
  }

  .section-block:nth-child(2) {
    animation-delay: 0.05s;
  }

  .section-block:nth-child(3) {
    animation-delay: 0.1s;
  }

  .section-block:nth-child(4) {
    animation-delay: 0.15s;
  }

  .section-block:nth-child(5) {
    animation-delay: 0.2s;
  }

  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

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

/* ---------- 首屏定位区 ---------- */

.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  padding-top: 56px;
  padding-bottom: 56px;
}

.hero-content h1 {
  font-size: 28px;
  line-height: 1.45;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-text-mid);
  margin-bottom: 16px;
}

.hero-boundary {
  font-size: 14px;
  color: var(--color-text-mid);
  padding: 12px 16px;
  border-left: 3px solid var(--color-accent);
  background-color: var(--color-bg-gray);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 20px rgba(31, 58, 95, 0.08);
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text-mid);
  background-color: var(--color-bg-light);
  text-align: center;
}

/* ---------- 通用区块 ---------- */

.section-block {
  padding-top: 48px;
  padding-bottom: 48px;
  border-top: 1px solid var(--color-border);
}

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

.section-heading h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-heading p {
  color: var(--color-text-mid);
  max-width: var(--content-max);
}

.section-actions {
  margin-top: 24px;
}

/* ---------- 服务范围总览（首页卡片） ---------- */

.service-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* 首页服务卡：交替左右 */
.home-main .service-card:nth-child(even) .service-card-media {
  order: 2;
}

.home-main .service-card:nth-child(even) .service-card-body {
  order: 1;
}

/* ---------- 工作步骤摘要 ---------- */

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

.step-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  background-color: var(--color-bg-light);
  position: relative;
}

.step-number {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
  display: block;
}

.step-content h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 0;
}

/* ---------- 适用对象双栏 ---------- */

.client-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.client-col {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  background-color: var(--color-bg-light);
}

.client-col h3 {
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-accent);
}

.demand-list {
  margin-bottom: 16px;
}

.demand-list li {
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-mid);
}

.demand-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.cooperation-note {
  font-size: 14px;
  color: var(--color-text-mid);
  padding: 10px 14px;
  background-color: var(--color-bg-gray);
  border-radius: var(--radius-sm);
  margin-bottom: 0;
}

/* ---------- 成果标准比较表 ---------- */

.outcomes-table .table-scroll {
  margin-bottom: 8px;
}

/* ---------- 合作准备引导 ---------- */

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

.prep-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  background-color: var(--color-bg-light);
}

.prep-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.prep-item p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 0;
}

/* ---------- 常见问题预览 ---------- */

.faq-preview .faq-list {
  max-width: var(--content-max);
}

.faq-preview .faq-item > p {
  padding: 0 20px 16px;
}

.faq-preview .faq-item .text-link {
  margin: 0 20px 16px;
  font-size: 13px;
}

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

/* ---------- 相关指南链接列表 ---------- */

.guide-links-section,
.guide-links {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.guide-link-list li,
.guide-links li,
.related-guide li,
.related-guides li {
  margin-bottom: 10px;
}

.guide-link-list a,
.guide-links a,
.related-guide a,
.related-guides a {
  display: inline-block;
  font-size: 14px;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.guide-link-list a:hover,
.guide-links a:hover,
.related-guide a:hover,
.related-guides a:hover {
  border-bottom-color: var(--color-accent);
}

/* ==========================================================================
   Pages — 服务范围页
   ========================================================================== */

.service-card-section {
  margin-bottom: 40px;
}

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

.service-card-room .service-card-media {
  min-height: 240px;
}

.service-card-room .condition-list li {
  padding: 8px 0;
  padding-left: 20px;
}

.service-card-room .condition-list strong {
  color: var(--color-primary);
}

.service-compare-section {
  margin-bottom: 40px;
}

/* ==========================================================================
   Pages — 适用对象页
   ========================================================================== */

.client-scene-block {
  margin-bottom: 32px;
}

.client-card {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  background-color: var(--color-bg-light);
  margin-bottom: 24px;
}

.client-media figure {
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  min-height: 200px;
}

.client-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.client-content h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.client-content > p {
  color: var(--color-text-mid);
  margin-bottom: 16px;
}

.client-content h3 {
  font-size: 15px;
  margin-top: 16px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.client-content ul {
  margin-bottom: 12px;
}

.client-content ul li {
  padding: 4px 0;
  padding-left: 18px;
  position: relative;
  font-size: 14px;
  color: var(--color-text-mid);
}

.client-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.cooperation-tip {
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 24px 28px;
  background-color: var(--color-bg-gray);
  margin-bottom: 32px;
}

.cooperation-tip h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

.cooperation-tip p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 8px;
}

.related-guide {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

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

/* ==========================================================================
   Pages — 工作步骤页
   ========================================================================== */

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

.steps-intro {
  margin-bottom: 24px;
}

.steps-intro h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.steps-intro p {
  color: var(--color-text-mid);
  max-width: var(--content-max);
}

.steps-wrap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: start;
}

.steps-list {
  display: grid;
  gap: 16px;
}

.steps-list .step-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg-light);
}

.steps-list .step-number {
  font-size: 24px;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-primary);
}

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

.step-body p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 4px;
}

.step-label {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 500;
  margin-right: 6px;
}

.step-detail {
  font-size: 14px;
  color: var(--color-text-mid);
}

.steps-figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  position: sticky;
  top: 88px;
}

.steps-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.steps-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-mid);
  background-color: var(--color-bg-light);
  text-align: center;
}

/* 阶段转换说明 */
.transition-section {
  margin-bottom: 32px;
}

.transition-section h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.transition-section > p {
  color: var(--color-text-mid);
  margin-bottom: 20px;
}

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

.transition-list li {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  background-color: var(--color-bg-light);
}

.transition-list h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--color-accent);
}

.transition-list p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 成果与标准页
   ========================================================================== */

.outcome-overview {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
}

.outcome-overview-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.outcome-overview-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.outcome-overview-copy h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.outcome-overview-copy p {
  color: var(--color-text-mid);
  font-size: 14px;
}

.outcome-table-section {
  margin-bottom: 40px;
}

.outcome-table-section h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.outcome-table-section > p {
  color: var(--color-text-mid);
  margin-bottom: 20px;
}

.acceptance-section {
  margin-bottom: 32px;
}

.acceptance-section h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.acceptance-section > p {
  color: var(--color-text-mid);
  margin-bottom: 20px;
}

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

.acceptance-list li {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  background-color: var(--color-bg-light);
}

.acceptance-list h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.acceptance-list p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 0;
}

/* ==========================================================================
   Pages — 合作准备页
   ========================================================================== */

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

.preparation-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: start;
}

.preparation-image figure {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  position: sticky;
  top: 88px;
}

.preparation-image img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.preparation-list {
  display: grid;
  gap: 16px;
}

.preparation-list .prep-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  background-color: var(--color-bg-light);
}

.preparation-list .prep-item h2 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.preparation-list .prep-item p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 0;
}

/* 合作边界确认 */
.boundary-section {
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  padding: 28px;
  background-color: var(--color-bg-gray);
  margin-bottom: 32px;
}

.boundary-section h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

.boundary-content p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 12px;
}

.boundary-list {
  margin-bottom: 12px;
}

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

.boundary-list li::before {
  content: "×";
  position: absolute;
  left: 0;
  top: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

.next-steps-section {
  margin-bottom: 24px;
}

.next-steps-section h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.next-steps-section > p {
  color: var(--color-text-mid);
  margin-bottom: 16px;
}

.next-steps-section .guide-links {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.next-steps-section .guide-links li {
  display: inline-block;
  margin-right: 16px;
}

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

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

.faq-categories h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

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

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

.category-card h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.category-card p {
  font-size: 13px;
  color: var(--color-text-mid);
  margin-bottom: 12px;
}

.category-card a {
  font-size: 13px;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-accent);
}

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

.faq-accordion > h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.faq-accordion > .section-desc {
  margin-bottom: 24px;
}

.faq-accordion > h3 {
  font-size: 17px;
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--color-primary);
  padding-left: 12px;
  border-left: 3px solid var(--color-accent);
}

.faq-group {
  margin-bottom: 8px;
}

.faq-answer {
  padding: 0 20px 16px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 8px;
}

.faq-answer a {
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-accent);
}

.content-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.content-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.content-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-mid);
  background-color: var(--color-bg-light);
  text-align: center;
}

.content-media-inline {
  max-width: var(--content-max);
}

.related-guides {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.related-guides h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

.related-guides > p {
  color: var(--color-text-mid);
  margin-bottom: 16px;
}

/* ==========================================================================
   Pages — 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}

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

.error-content h1 {
  font-size: 64px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.error-lead {
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-family: var(--font-serif);
}

.error-desc {
  font-size: 14px;
  color: var(--color-text-mid);
  margin-bottom: 28px;
}

/* ==========================================================================
   Responsive — 响应式
   ========================================================================== */

/* ---------- 平板及以下 ---------- */

@media (max-width: 992px) {
  .step-list {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .steps-figure {
    position: static;
  }

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

  .outcome-overview {
    grid-template-columns: 1fr;
  }

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

  .preparation-image figure {
    position: static;
  }
}

/* ---------- 手机端（768px 断点） ---------- */

@media (max-width: 768px) {
  .container,
  .header-inner,
  .footer-inner,
  .hero-section,
  .section-block,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* 页头 */
  .header-inner {
    min-height: 56px;
    position: relative;
  }

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

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

  /* 汉堡按钮显示 */
  .nav-toggle {
    display: flex;
  }

  /* 导航菜单：默认收起 */
  .main-nav ul {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    padding: 8px 16px 16px;
    gap: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
  }

  .main-nav ul.is-open {
    display: flex;
  }

  .main-nav .nav-link {
    padding: 12px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 2px solid transparent;
  }

  .main-nav .nav-link.is-current {
    border-left-color: var(--color-accent);
    border-bottom-color: rgba(255, 255, 255, 0.1);
  }

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

  /* 首屏 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 32px;
  }

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

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

  /* 服务卡 */
  .service-card {
    grid-template-columns: 1fr;
  }

  .service-card-media {
    min-height: 180px;
    position: relative;
    padding-top: 0;
  }

  .service-card-media img {
    position: static;
    height: 180px;
  }

  .home-main .service-card:nth-child(even) .service-card-media,
  .home-main .service-card:nth-child(even) .service-card-body {
    order: 0;
  }

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

  .service-card-room .service-card-media {
    min-height: 180px;
  }

  /* 步骤 */
  .step-list {
    grid-template-columns: 1fr;
  }

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

  /* 适用对象 */
  .client-columns {
    grid-template-columns: 1fr;
  }

  .client-col {
    padding: 20px;
  }

  /* 准备引导 */
  .prep-grid {
    grid-template-columns: 1fr;
  }

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

  /* 分类索引 */
  .category-grid {
    grid-template-columns: 1fr;
  }

  /* 验收列表 */
  .acceptance-list {
    grid-template-columns: 1fr;
  }

  /* 表格 */
  .table-scroll {
    margin-left: -16px;
    margin-right: -16px;
    width: calc(100% + 32px);
    border-left: none;
    border-right: none;
    border-radius: 0;
  }

  .compare-table,
  .outcome-table {
    min-width: 560px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
    padding-bottom: 24px;
  }

  .footer-col h3 {
    margin-bottom: 10px;
  }

  /* 页面标题 */
  .page-title {
    font-size: 24px;
  }

  /* 步骤列表 */
  .steps-list .step-item {
    grid-template-columns: 44px 1fr;
    padding: 16px;
  }

  .steps-list .step-number {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  /* 相关链接 */
  .related-links {
    gap: 8px;
  }

  .related-links-item {
    padding: 6px 10px;
    font-size: 13px;
  }
}

/* ---------- 小屏手机（390px 及以下） ---------- */

@media (max-width: 390px) {
  .brand-tagline {
    display: none;
  }

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

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

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

  .steps-list .step-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .steps-list .step-number {
    margin-bottom: 4px;
  }

  .client-card {
    padding: 20px;
  }

  .cooperation-tip {
    padding: 20px;
  }

  .boundary-section {
    padding: 20px;
  }

  .transition-list li {
    padding: 16px;
  }

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

/* 程序验收反馈：移动端防溢出 */
@media (max-width: 768px) {
  .site-main,
  .site-main * {
    min-width: 0;
    max-width: 100%;
  }

  .site-main :is(h1, h2, h3, h4, p, a, span) {
    overflow-wrap: anywhere;
  }
}