/* ==========================================================================
   黑料网app下载 · 整站样式表
   站点：yzdmtz.cn
   说明：本文件覆盖全站所有页面真实 DOM 的样式，按 base / layout /
         components / pages / responsive 分组组织。
   ========================================================================== */

/* ==========================================================================
   1. Base — 基础变量、重置、字体、色彩
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-text: #222222;
  --color-text-secondary: #666666;
  --color-accent: #0f4c81;
  --color-accent-dark: #0b3d68;
  --color-accent-light: #eaf1f8;
  --color-gold: #c8963e;
  --color-border: #e5e7eb;
  --color-card-bg: #f8f9fb;
  --color-white: #ffffff;

  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;

  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 13px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-2xl: 26px;
  --font-size-3xl: 32px;

  --line-height-base: 1.8;
  --line-height-heading: 1.4;

  --container-width: 1200px;
  --container-padding: 24px;

  --border-radius-sm: 4px;
  --border-radius: 6px;
  --border-radius-md: 8px;

  --transition-base: 0.2s ease;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
}

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

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
figure {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
  border: 0;
}

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

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

ul,
ol {
  list-style: none;
}

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

p {
  margin: 0 0 1.2em;
}

/* ==========================================================================
   2. Layout — 全站骨架：页头、页脚、容器、面包屑、页面标题
   ========================================================================== */

/* ---------- 页头 ---------- */

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

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--color-text);
}

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
}

.brand-tag {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  border-left: 1px solid var(--color-border);
  padding-left: 8px;
  line-height: 1.4;
}

.main-nav {
  margin-left: auto;
}

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

.nav-list li {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-bottom: 2px solid transparent;
  line-height: 1.4;
}

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

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-sm);
  flex-shrink: 0;
  transition: background var(--transition-base);
}

.nav-cta:hover {
  background: var(--color-accent-dark);
  color: var(--color-white);
}

/* ---------- 页脚 ---------- */

.site-footer {
  background: #f2f4f7;
  border-top: 1px solid var(--color-border);
  margin-top: 64px;
}

.footer-columns {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h4.footer-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

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

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

.footer-bottom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px var(--container-padding) 28px;
  border-top: 1px solid var(--color-border);
}

.copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ---------- 主容器 ---------- */

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

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 48px;
}

/* ---------- 面包屑 ---------- */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: 20px 0 0;
  margin-bottom: 8px;
}

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

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

.breadcrumb-sep {
  color: #b0b4bc;
}

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

/* ---------- 页面标题区 ---------- */

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

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

/* ---------- 通用容器与布局 ---------- */

.container {
  max-width: var(--container-width);
  margin: 0 auto;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
  align-items: start;
}

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

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

/* ==========================================================================
   3. Components — 通用组件：按钮、卡片、步骤、折叠面板、侧栏等
   ========================================================================== */

/* ---------- 按钮 ---------- */

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-base), border-color var(--transition-base),
    color var(--transition-base);
  line-height: 1.4;
}

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

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

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

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

/* ---------- 区块标题 ---------- */

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section-intro,
.section-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 24px;
  line-height: var(--line-height-base);
}

/* ---------- 区块链接 ---------- */

.section-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
}

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

.section-link.centered {
  margin-top: 28px;
}

/* ---------- 侧栏卡片 ---------- */

.sidebar-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-links li {
  margin-bottom: 12px;
}

.sidebar-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

.sidebar-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

.sidebar-tips {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.6;
  padding: 12px;
  background: var(--color-white);
  border-radius: var(--border-radius-sm);
  border-left: 3px solid var(--color-gold);
}

/* ---------- 时间轴 ---------- */

.timeline-list {
  position: relative;
  padding-left: 28px;
}

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

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

.timeline-marker {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-white);
  border: 3px solid var(--color-accent);
  z-index: 1;
}

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

.timeline-step {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

.timeline-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-card-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 12px;
}

.deliverable-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.deliverable-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  border-radius: var(--border-radius-sm);
  line-height: 1.4;
}

/* ---------- 提示卡 ---------- */

.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tip-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  position: relative;
}

.tip-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 12px;
}

.tip-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 8px;
}

.tip-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

.tips-footer-link {
  margin-top: 24px;
}

/* ---------- 折叠面板 ---------- */

details {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-white);
  margin-bottom: 12px;
}

summary {
  cursor: pointer;
  padding: 16px 20px;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 48px;
  transition: color var(--transition-base);
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  color: var(--color-accent);
  font-weight: 400;
  transition: transform var(--transition-base);
}

details[open] summary::after {
  content: "−";
}

details[open] summary {
  color: var(--color-accent);
}

details .faq-answer,
details > p {
  padding: 0 20px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
}

/* ---------- 相关链接 ---------- */

.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
  margin-top: 32px;
}

.related-links-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  padding: 6px 14px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: border-color var(--transition-base), color var(--transition-base);
}

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

/* ==========================================================================
   4. Pages — 首页与内页模块
   ========================================================================== */

/* ---------- 首页 Hero ---------- */

.hero-section {
  background: #f4f6f9;
  border-bottom: 1px solid var(--color-border);
  padding: 56px 0;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: center;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 16px;
  color: var(--color-text);
}

.hero-intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 28px;
}

.hero-path-list {
  margin-bottom: 32px;
}

.hero-path-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

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

.path-step {
  font-weight: 600;
  color: var(--color-accent);
  flex-shrink: 0;
}

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

/* ---------- 首页服务目录网格 ---------- */

.service-directory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.dir-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-base), transform var(--transition-base),
    box-shadow var(--transition-base);
}

.dir-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.dir-title {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
}

.dir-desc {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---------- 首页服务方向编辑网格 ---------- */

.service-directory-section {
  padding: 64px 0 32px;
}

.service-directory-section > .section-title {
  max-width: var(--container-width);
  margin: 0 auto 12px;
  padding: 0 var(--container-padding);
}

.service-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
}

.service-item-wide {
  grid-column: span 2;
}

.service-figure {
  overflow: hidden;
}

.service-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.service-item:hover .service-figure img {
  transform: scale(1.02);
}

.service-content {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.service-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

.service-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

.service-link {
  margin-top: auto;
  padding-top: 8px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
}

/* ---------- 首页项目排期预览 ---------- */

.project-preview-section {
  padding: 48px 0;
  background: var(--color-white);
}

.project-preview-section > .preview-header {
  max-width: var(--container-width);
  margin: 0 auto 32px;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.preview-header .section-title {
  margin: 0;
}

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

.step-item {
  position: relative;
  padding: 24px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-right: none;
}

.step-item:first-child {
  border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

.step-item:last-child {
  border-right: 1px solid var(--color-border);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.step-item::before {
  counter-increment: step-counter;
  content: counter(step-counter, decimal-leading-zero);
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.step-label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ---------- 首页交付记录预览 ---------- */

.delivery-preview-section {
  padding: 48px 0;
  background: #f4f6f9;
}

.delivery-preview-section > .section-title {
  max-width: var(--container-width);
  margin: 0 auto 32px;
  padding: 0 var(--container-padding);
}

.delivery-cards {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.delivery-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 28px 24px;
  transition: border-color var(--transition-base), transform var(--transition-base),
    box-shadow var(--transition-base);
}

.delivery-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.delivery-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.delivery-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 首页团队预览 ---------- */

.team-preview-section {
  padding: 48px 0;
}

.team-preview-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.team-intro .section-title {
  margin-bottom: 16px;
}

.team-intro-text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 24px;
}

.team-roles-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.role-item {
  padding: 20px 24px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-base);
}

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

.role-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.role-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 首页 FAQ 预览 ---------- */

.faq-preview-section {
  padding: 48px 0;
  background: #f4f6f9;
}

.faq-preview-header {
  max-width: var(--container-width);
  margin: 0 auto 24px;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-preview-header .section-title {
  margin: 0;
}

.faq-preview-section details.faq-item-preview {
  max-width: var(--container-width);
  margin: 0 auto 12px;
  padding: 0;
}

/* ---------- 首页服务规则摘要 ---------- */

.rules-summary-section {
  padding: 48px 0;
}

.rules-summary-section > .section-title {
  max-width: var(--container-width);
  margin: 0 auto 32px;
  padding: 0 var(--container-padding);
}

.rules-cards {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rule-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.rule-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.rule-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.rule-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：页面标题区（带图） ---------- */

.page-title-block {
  margin-bottom: 32px;
}

.page-title-block-with-image {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 32px;
  align-items: center;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
}

.page-title-content {
  min-width: 0;
}

.page-lead {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

.page-title-figure img,
.title-media img,
.title-figure img,
.intro-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
}

.page-title-figure figcaption,
.title-media figcaption,
.intro-figure figcaption {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 8px;
  text-align: center;
}

/* ---------- 内页：页面标题区（无图） ---------- */

.page-title-block p.page-intro,
.page-title-block p.page-lead {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  max-width: 720px;
}

/* ---------- 内页：排期页布局 ---------- */

.schedule-layout {
  grid-template-columns: minmax(0, 1fr) 320px;
}

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

.timeline-section .section-title {
  margin-bottom: 8px;
}

.timeline-section .section-intro {
  margin-bottom: 32px;
}

/* ---------- 内页：排期侧栏 ---------- */

.factors-card .factor-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.factors-card .factor-list li:last-child {
  border-bottom: none;
}

.factor-name {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.factor-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.milestone-card {
  background: var(--color-white);
}

.milestone-item {
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  margin-bottom: 12px;
}

.milestone-item.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.milestone-item:last-child {
  margin-bottom: 0;
}

.milestone-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.milestone-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ---------- 内页：排期里程碑提示块 ---------- */

.milestone-tips-block {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 32px;
  margin-bottom: 32px;
}

.tips-heading {
  margin-bottom: 24px;
}

.tips-heading .section-title {
  margin-bottom: 8px;
}

/* ---------- 内页：团队页 ---------- */

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

.roles-grid {
  margin-bottom: 48px;
}

.roles-grid > .section-title {
  margin-bottom: 24px;
}

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

.role-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  transition: border-color var(--transition-base), transform var(--transition-base),
    box-shadow var(--transition-base);
}

.role-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.role-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-sm);
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 20px;
}

.icon-mark {
  font-size: 20px;
  color: var(--color-accent);
}

.role-card .role-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 8px;
}

.role-card .role-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：团队协作流程 ---------- */

.collab-flow {
  margin-bottom: 48px;
}

.collab-flow > .section-title {
  margin-bottom: 24px;
}

.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

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

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

.step-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.step-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

.flow-figure {
  margin-top: 24px;
}

.flow-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--border-radius-md);
}

.flow-figure figcaption {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 8px;
  text-align: center;
}

/* ---------- 内页：团队建议 ---------- */

.team-advice {
  margin-bottom: 48px;
}

.team-advice > .section-title {
  margin-bottom: 16px;
}

.advice-content {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
}

.advice-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0 0 12px;
}

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

/* ---------- 内页：团队侧栏 ---------- */

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

/* ---------- 内页：交付记录页 ---------- */

.deliverables-list {
  margin-bottom: 48px;
}

.deliverables-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.deliverable-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.card-stage {
  display: inline-block;
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 2px 10px;
  border-radius: var(--border-radius-sm);
  margin-bottom: 10px;
  line-height: 1.6;
}

.card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：示例图集 ---------- */

.sample-gallery {
  margin-bottom: 48px;
}

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

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

.gallery-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.gallery-caption {
  padding: 12px 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
  line-height: 1.6;
}

/* ---------- 内页：验收提示 ---------- */

.acceptance-tips {
  margin-bottom: 48px;
}

.tips-list {
  counter-reset: tip-counter;
}

.tip-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}

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

.tip-number {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

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

.tip-content .tip-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.tip-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：服务规范页 ---------- */

.page-title-area {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 32px;
  align-items: center;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  margin-bottom: 32px;
}

.page-title-wrap {
  min-width: 0;
}

.page-title-wrap .page-lead {
  margin: 0;
}

.page-title-figure img.page-title-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--border-radius-sm);
}

.rule-sections {
  min-width: 0;
}

.rule-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}

.rule-section:first-child {
  padding-top: 0;
}

.rule-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.rule-text {
  min-width: 0;
}

.rule-heading {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.rule-text p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 12px;
}

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

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

.aside-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.aside-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.aside-links li {
  margin-bottom: 12px;
}

.aside-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

.highlight-card {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
}

.aside-note {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：版权提示 ---------- */

.copyright-note {
  margin-top: 48px;
}

.note-inner {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-gold);
  border-radius: var(--border-radius-md);
  padding: 24px 28px;
}

.note-heading {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.note-inner p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：关于我们 ---------- */

.intro-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

.intro-text h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 16px;
}

.intro-text p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 12px;
}

.intro-figure img.hero-image {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--border-radius-md);
}

.intro-figure figcaption {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 8px;
  text-align: center;
}

.principles-grid {
  margin-bottom: 48px;
}

.principles-grid > h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 24px;
}

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

.principle-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 24px;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.principle-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.principle-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.principle-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

.boundary-list {
  margin-bottom: 48px;
}

.boundary-list > h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 24px;
}

.boundary-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.boundary-item h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.boundary-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin: 0;
}

/* ---------- 内页：关于我们相关链接 ---------- */

.related-links h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 16px;
}

.related-list li {
  margin-bottom: 12px;
}

.related-list a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

/* ---------- 内页：关于我们侧栏 ---------- */

.sidebar-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-list li {
  margin-bottom: 12px;
}

.sidebar-list a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

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

/* ---------- 内页：FAQ 页 ---------- */

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

.faq-group-section .section-heading {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

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

.faq-item {
  margin-bottom: 0;
}

.faq-question {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
}

/* ---------- 内页：FAQ 引导说明 ---------- */

.ask-note-section {
  margin-bottom: 48px;
}

.ask-note-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 32px;
}

.ask-note-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}

.ask-note-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 20px;
}

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

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

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 0;
}

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

/* ---------- 404 页面 ---------- */

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

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

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 16px;
}

.error-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text);
}

.error-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-base);
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

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

/* ---------- 平板：960px 以下 ---------- */

@media (max-width: 960px) {
  .header-inner {
    min-height: 60px;
    gap: 16px;
  }

  .brand-tag {
    display: none;
  }

  .nav-link {
    padding: 8px 10px;
    font-size: var(--font-size-xs);
  }

  .nav-cta {
    padding: 8px 14px;
    font-size: var(--font-size-xs);
  }

  .footer-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

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

  .schedule-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .service-item-wide {
    grid-column: span 1;
  }

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

  .step-item {
    border-right: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
  }

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

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

  .team-preview-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

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

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

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

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

  .page-title-block-with-image,
  .page-title-area {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .intro-block {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ---------- 手机：640px 以下 ---------- */

@media (max-width: 640px) {
  .header-inner {
    padding: 0 16px;
    min-height: 56px;
  }

  .brand-name {
    font-size: var(--font-size-lg);
  }

  .nav-cta {
    display: none;
  }

  .main-nav {
    margin-left: 0;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
  }

  .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-link {
    padding: 14px 8px;
    font-size: var(--font-size-base);
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .nav-link:hover,
  .nav-link.is-current {
    border-bottom: none;
    border-left-color: var(--color-accent);
    background: var(--color-accent-light);
  }

  .inner-main {
    padding: 0 16px 32px;
  }

  .page-title {
    font-size: var(--font-size-2xl);
  }

  .breadcrumb {
    padding-top: 16px;
  }

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

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

  .sidebar-right,
  .sidebar-area,
  .page-sidebar,
  .rule-aside {
    order: 2;
  }

  .content-main,
  .content-area,
  .page-content {
    order: 1;
  }

  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .footer-bottom {
    padding: 16px 16px 24px;
  }

  .hero-section {
    padding: 32px 0;
  }

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

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-intro {
    font-size: var(--font-size-base);
  }

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

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

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

  .dir-card {
    padding: 14px;
  }

  .dir-title {
    font-size: var(--font-size-sm);
  }

  .dir-desc {
    font-size: var(--font-size-xs);
  }

  .service-directory-section {
    padding: 40px 0 24px;
  }

  .service-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0 16px;
  }

  .service-item-wide {
    grid-column: span 1;
  }

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

  .service-content {
    padding: 16px 20px 20px;
  }

  .project-preview-section {
    padding: 32px 0;
  }

  .preview-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .step-strip {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 0 16px;
  }

  .step-item {
    border-right: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 16px 20px;
  }

  .delivery-preview-section {
    padding: 32px 0;
  }

  .delivery-cards {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0 16px;
  }

  .delivery-card {
    padding: 20px;
  }

  .team-preview-section {
    padding: 32px 0;
  }

  .team-preview-layout {
    padding: 0 16px;
  }

  .team-roles-list {
    gap: 12px;
  }

  .faq-preview-section {
    padding: 32px 0;
  }

  .faq-preview-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .rules-summary-section {
    padding: 32px 0;
  }

  .rules-cards {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0 16px;
  }

  .rule-card {
    padding: 20px;
  }

  .section-link.centered {
    margin-left: 16px;
    margin-right: 16px;
  }

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

  .timeline-list {
    padding-left: 20px;
  }

  .timeline-marker {
    left: -20px;
    width: 14px;
    height: 14px;
  }

  .timeline-card {
    padding: 16px;
  }

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

  .milestone-tips-block {
    padding: 24px 16px;
  }

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

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

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

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

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

  .gallery-image {
    height: 180px;
  }

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

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

  .intro-figure img.hero-image {
    height: 200px;
  }

  .page-title-block-with-image,
  .page-title-area {
    padding: 16px;
  }

  .page-title-figure img,
  .title-media img,
  .title-figure img,
  .page-title-img {
    height: 160px;
  }

  .rule-section {
    padding: 24px 0;
  }

  .rule-figure img.rule-img {
    height: 160px;
  }

  .ask-note-card {
    padding: 24px 16px;
  }

  .ask-note-actions {
    flex-direction: column;
    gap: 8px;
  }

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

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

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

/* ---------- 手机：390px 及以下 ---------- */

@media (max-width: 390px) {
  .service-directory-grid {
    grid-template-columns: 1fr;
  }

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

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

  .rules-cards {
    grid-template-columns: 1fr;
  }

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

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

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

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

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

  .boundary-items {
    grid-template-columns: 1fr;
  }
}

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}