/* ==========================================================================
   吃瓜视频网站 · 全站样式表
   视觉方向：旅游指南风变体，深蓝 x 青绿 x 沙棕
   ========================================================================== */

/* ==========================================================================
   Base — 基础变量、重置与全局字体
   ========================================================================== */

:root {
  --color-primary: #0f2d3d;
  --color-accent: #1a7d76;
  --color-accent-dark: #14635e;
  --color-highlight: #c47a3f;
  --color-bg: #f7f4ed;
  --color-text: #1f2933;
  --color-text-light: #5a6b7a;
  --color-white: #ffffff;
  --color-border: #e3ddd0;
  --color-bg-soft: #efe9dd;

  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;

  --container-width: 1200px;
  --container-padding: 40px 20px;
  --radius-card: 8px;
  --radius-btn: 6px;
  --radius-tag: 4px;

  --shadow-card: 0 2px 8px rgba(15, 45, 61, 0.08);
  --shadow-card-hover: 0 6px 18px rgba(15, 45, 61, 0.14);

  --transition-base: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-primary);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 26px;
}

h3 {
  font-size: 20px;
}

p {
  margin-bottom: 12px;
}

/* ==========================================================================
   Layout — 全站布局骨架（header / main / footer / 容器）
   ========================================================================== */

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

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

/* 页头 */
.site-header {
  background-color: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.site-logo {
  flex-shrink: 0;
}

.site-logo a {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.02em;
  display: inline-block;
  padding: 8px 0;
}

.site-logo a:hover {
  color: #d8f0ee;
}

/* 主导航 */
.main-nav.site-nav {
  display: flex;
  align-items: center;
}

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

.main-nav ul li a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-btn);
  position: relative;
  white-space: nowrap;
}

.main-nav ul li a:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.08);
}

.main-nav ul li a.is-current {
  color: var(--color-white);
  font-weight: 600;
  background-color: rgba(255, 255, 255, 0.12);
}

/* 汉堡按钮（默认隐藏，移动端显示） */
.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, 0.3);
  border-radius: var(--radius-btn);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

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

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

/* 页脚 */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 20px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-col h3 {
  font-size: 16px;
  color: var(--color-white);
  margin-bottom: 16px;
  font-weight: 600;
}

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

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.6;
}

.footer-col ul li a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 0;
}

/* ==========================================================================
   Components — 通用组件（按钮 / 标签 / 提示框 / 面包屑 / 标题区）
   ========================================================================== */

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  transition: background-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(26, 125, 118, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
  background-color: rgba(26, 125, 118, 0.08);
  color: var(--color-accent-dark);
}

.btn-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 0;
  font-weight: 600;
  color: var(--color-accent);
}

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

.btn-link::after {
  content: "→";
  margin-left: 6px;
  transition: transform var(--transition-base);
}

.btn-link:hover::after {
  transform: translateX(3px);
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 20px 0;
  font-size: 14px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

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

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

.breadcrumb-sep {
  color: #9aa8b5;
  user-select: none;
}

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

/* 内页标题区 */
.page-header {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px 0;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
}

.page-title-area {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 12px 20px 0;
}

.page-title-area p {
  font-size: 16px;
  color: var(--color-text-light);
  max-width: 760px;
  margin-bottom: 0;
}

/* 提示框（旅游贴士风格） */
.tip-box {
  background-color: var(--color-bg-soft);
  border-left: 4px solid var(--color-highlight);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  padding: 20px 24px;
  margin: 24px 0;
}

.tip-box h2 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.tip-box p {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: 0;
  line-height: 1.7;
}

.tip-box p strong {
  color: var(--color-highlight);
  font-weight: 600;
}

/* 标签 */
.tag-new,
.tag-adjust,
.tag-fix,
.update-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
}

.tag-new,
.update-tag.tag-new {
  background-color: rgba(26, 125, 118, 0.12);
  color: var(--color-accent);
}

.tag-adjust {
  background-color: rgba(196, 122, 63, 0.14);
  color: var(--color-highlight);
}

.tag-fix {
  background-color: rgba(90, 107, 122, 0.12);
  color: var(--color-text-light);
}

/* 相关链接条 */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 20px 48px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

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

.related-links-item {
  font-size: 14px;
  color: var(--color-accent);
  padding: 6px 4px;
  border-bottom: 1px solid transparent;
}

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

/* 辅助隐藏（仅供屏幕阅读器） */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 图片容器 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

figcaption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 8px 0 0;
  line-height: 1.5;
}

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

/* Hero 区 */
.hero-section {
  background-color: var(--color-primary);
  color: var(--color-white);
  overflow: hidden;
}

.hero-section .hero-content,
.hero-section .hero-media {
  max-width: var(--container-width);
  margin: 0 auto;
}

.hero-section .hero-content {
  padding: 64px 20px 40px;
}

.hero-section h1 {
  font-size: 36px;
  color: var(--color-white);
  max-width: 640px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero-slogan {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-actions .btn-primary {
  background-color: var(--color-highlight);
}

.hero-actions .btn-primary:hover {
  background-color: #b06a33;
}

.hero-actions .btn-secondary {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--color-white);
}

.hero-actions .btn-secondary:hover {
  border-color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.08);
}

/* 入口卡片 */
.entry-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 760px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.entry-card:hover {
  background-color: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.entry-icon {
  font-size: 24px;
  margin-bottom: 12px;
  line-height: 1;
}

.entry-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 6px;
}

.entry-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.55;
}

/* Hero 图片 */
.hero-media {
  padding: 0 20px 48px;
}

.hero-media img {
  border-radius: var(--radius-card);
  height: 320px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* 通用区块 */
.section-block {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--container-padding);
}

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

.section-heading h2 {
  font-size: 26px;
  margin-bottom: 8px;
}

.section-heading p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 640px;
  margin-bottom: 0;
}

/* 服务项目预览 */
.service-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.65;
  margin-bottom: 16px;
  flex-grow: 1;
}

.service-card a {
  font-size: 14px;
  font-weight: 600;
  align-self: flex-start;
}

.service-card a::after {
  content: "→";
  margin-left: 4px;
}

/* 合作流程时间线（首页横排） */
.process-timeline {
  background-color: var(--color-bg-soft);
}

.process-timeline .section-heading {
  text-align: center;
}

.process-timeline .section-heading p {
  margin: 0 auto;
}

.timeline-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.timeline-item {
  position: relative;
  padding: 24px 20px 20px;
  background-color: var(--color-white);
  border-radius: var(--radius-card);
  border-top: 3px solid var(--color-accent);
  box-shadow: var(--shadow-card);
}

.timeline-item .step-number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-highlight);
  background-color: rgba(196, 122, 63, 0.1);
  border-radius: var(--radius-tag);
  padding: 2px 8px;
  margin-bottom: 12px;
}

.timeline-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

.timeline-more {
  text-align: center;
  margin-top: 32px;
  margin-bottom: 0;
}

.timeline-more a {
  font-weight: 600;
  font-size: 15px;
}

/* 案例画廊 */
.gallery-viewer {
  display: grid;
  grid-template-columns: 1fr 96px;
  gap: 20px;
  align-items: start;
}

.gallery-main {
  background-color: var(--color-primary);
  border-radius: var(--radius-card);
  overflow: hidden;
  min-height: 0;
}

.gallery-main img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.gallery-thumbnails {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gallery-thumb {
  background: transparent;
  border: 2px solid transparent;
  border-radius: var(--radius-card);
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  width: 96px;
  height: 96px;
  transition: border-color var(--transition-base), opacity var(--transition-base);
}

.gallery-thumb:hover {
  opacity: 0.85;
}

.gallery-thumb.active {
  border-color: var(--color-accent);
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 更新记录摘要 */
.update-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.update-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px 20px;
}

.update-item .update-tag {
  flex-shrink: 0;
  margin-top: 2px;
}

.update-item p {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: 0;
  line-height: 1.6;
}

.updates-more {
  margin-top: 24px;
  margin-bottom: 0;
}

.updates-more a {
  font-weight: 600;
}

/* 合作引导区 */
.contact-guide {
  background-color: var(--color-primary);
}

.contact-guide .section-block {
  padding-top: 48px;
  padding-bottom: 48px;
}

.guide-content {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.guide-content h2 {
  color: var(--color-white);
  margin-bottom: 12px;
}

.guide-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  margin-bottom: 28px;
}

.guide-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.guide-links .btn-primary {
  background-color: var(--color-highlight);
}

.guide-links .btn-primary:hover {
  background-color: #b06a33;
}

.guide-links .btn-secondary {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--color-white);
}

.guide-links .btn-secondary:hover {
  border-color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   Pages — 服务项目（services）
   ========================================================================== */

.service-groups {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px 0;
}

.service-groups > h2 {
  font-size: 22px;
  margin-bottom: 24px;
}

.service-group-item {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 32px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
}

.service-group-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  min-height: 0;
}

.service-group-media img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.service-group-content h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.service-group-content p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

/* 相关链接卡片 */
.related-link-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

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

.related-link-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.related-link-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.related-link-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.6;
}

/* ==========================================================================
   Pages — 场景方案（scenarios）
   ========================================================================== */

.scenario-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px 0;
}

.section-title {
  font-size: 22px;
  margin-bottom: 24px;
}

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

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

.scenario-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.scenario-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.scenario-card h3 {
  font-size: 18px;
  padding: 16px 20px 0;
  margin-bottom: 8px;
}

.scenario-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.65;
  padding: 0 20px;
  margin-bottom: 8px;
}

.scenario-card .scenario-tag {
  font-size: 13px;
  color: var(--color-highlight);
  font-weight: 600;
  padding-top: 4px;
}

.scenario-card p:last-child {
  padding-top: 4px;
  padding-bottom: 16px;
  margin-top: auto;
}

.scenario-card p a {
  font-weight: 600;
  font-size: 14px;
}

/* 场景选择指南 */
.scenario-guide {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 20px 0;
}

.guide-content p {
  font-size: 15px;
  color: var(--color-text);
  max-width: 760px;
  line-height: 1.8;
}

/* 合作入口 */
.cooperation-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 20px 0;
}

.cooperation-entry p {
  font-size: 15px;
  color: var(--color-text);
  max-width: 760px;
}

/* ==========================================================================
   Pages — 合作流程（process）
   ========================================================================== */

.content-media-inline {
  margin-top: 20px;
  margin-bottom: 8px;
  max-width: 760px;
}

.content-media-inline img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: var(--radius-card);
}

.process-timeline {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 20px 0;
  background-color: transparent;
}

.process-timeline > h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.section-lead {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 32px;
  max-width: 640px;
}

.process-step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.process-step:last-child {
  border-bottom: none;
}

.process-step .step-number {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(26, 125, 118, 0.1);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
}

.step-content h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 8px;
  max-width: 660px;
}

.step-deliverable {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 500;
  padding: 6px 12px;
  background-color: rgba(26, 125, 118, 0.08);
  border-radius: var(--radius-tag);
  display: inline-block;
}

/* 周期说明 */
.timeline-note {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 8px 20px 0;
}

.timeline-note h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.timeline-note p {
  font-size: 15px;
  color: var(--color-text);
  max-width: 720px;
}

/* 交付标准 */
.delivery-standard {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 20px 0;
}

.delivery-standard > h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.delivery-standard > p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 640px;
}

.delivery-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 24px 0;
}

.delivery-list li {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 18px;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.delivery-list li::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* FAQ 入口 */
.faq-entry {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 20px 0;
}

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

.faq-entry p {
  font-size: 15px;
  color: var(--color-text);
  max-width: 720px;
}

/* ==========================================================================
   Pages — 更新记录（updates）
   ========================================================================== */

.page-layout.sidebar-left {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px 0;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}

.sidebar-nav {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
  position: sticky;
  top: 96px;
}

.sidebar-nav h2 {
  font-size: 16px;
  margin-bottom: 16px;
}

.version-filter li {
  margin-bottom: 4px;
}

.filter-link {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  color: var(--color-text);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.filter-link:hover {
  background-color: var(--color-bg-soft);
  color: var(--color-accent-dark);
}

.filter-link.is-active {
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: 600;
}

.aside-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.aside-note p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

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

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

.page-heading p {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 640px;
  margin-bottom: 0;
}

/* 更新条目 */
.update-entry {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--shadow-card);
}

.update-featured {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0;
}

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

.update-content {
  padding: 24px;
}

.update-content h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.update-content p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 0;
}

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

.group-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.group-title .tag {
  font-size: 12px;
}

.update-group .update-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.update-group .update-list li {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 18px;
  font-size: 15px;
  line-height: 1.6;
}

/* 更新页相关卡片 */
.related-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.related-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.related-card p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.related-card a {
  font-weight: 600;
  font-size: 14px;
}

/* ==========================================================================
   Pages — 常见问题（faq）
   ========================================================================== */

.faq-intro-image {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px 20px 0;
}

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

.faq-accordion {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px 0;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  min-height: 48px;
  transition: background-color var(--transition-base);
}

.faq-item summary:hover {
  background-color: var(--color-bg-soft);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

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

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

.faq-item p {
  padding: 0 24px 18px;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.75;
  margin-bottom: 0;
}

/* 下一步建议 */
.next-step-suggestion {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 32px 20px 0;
}

.next-step-suggestion p {
  font-size: 15px;
  color: var(--color-text);
  background-color: var(--color-bg-soft);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  line-height: 1.8;
}

.next-step-suggestion a {
  font-weight: 600;
  margin: 0 4px;
}

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

.error-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  margin-bottom: 48px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 96px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 32px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 15px;
}

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

.error-links {
  max-width: 640px;
  width: 100%;
}

.error-links h2 {
  font-size: 18px;
  text-align: center;
  margin-bottom: 20px;
}

.error-links ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.error-links ul li a {
  display: block;
  text-align: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 500;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.error-links ul li a:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

/* ==========================================================================
   Responsive — 响应式适配
   ========================================================================== */

/* 平板及以下 */
@media (max-width: 1024px) {
  .service-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .service-group-item {
    grid-template-columns: 260px 1fr;
    gap: 24px;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 200px 1fr;
    gap: 24px;
  }

  .update-featured {
    grid-template-columns: 260px 1fr;
  }

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

/* 移动端 */
@media (max-width: 768px) {
  .header-inner {
    min-height: 60px;
    padding: 0 16px;
  }

  .site-logo a {
    font-size: 19px;
  }

  /* 汉堡菜单：按钮显示，导航收起 */
  .nav-toggle {
    display: flex;
  }

  .main-nav.site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .main-nav.site-nav.is-open {
    max-height: 420px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 20px;
    gap: 0;
  }

  .main-nav ul li a {
    padding: 14px 12px;
    font-size: 16px;
    border-radius: var(--radius-btn);
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  /* 首页 hero */
  .hero-section h1 {
    font-size: 26px;
  }

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

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

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

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

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

  /* 区块 */
  .section-block {
    padding: 32px 16px;
  }

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

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

  .service-card {
    padding: 16px;
  }

  .service-card h3 {
    font-size: 16px;
  }

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

  /* 画廊 */
  .gallery-viewer {
    grid-template-columns: 1fr;
  }

  .gallery-main img {
    height: 260px;
  }

  .gallery-thumbnails {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .gallery-thumb {
    width: 72px;
    height: 72px;
    flex-shrink: 0;
  }

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

  .footer-bottom {
    padding: 16px;
  }

  /* 内页通用 */
  .breadcrumb {
    padding: 16px 16px 0;
  }

  .page-header {
    padding: 24px 16px 0;
  }

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

  .page-title-area {
    padding: 10px 16px 0;
  }

  .related-links {
    padding: 16px 16px 32px;
  }

  /* 服务项目页 */
  .service-groups {
    padding: 24px 16px 0;
  }

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

  .service-group-media img {
    height: 180px;
  }

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

  /* 场景方案页 */
  .scenario-grid {
    padding: 24px 16px 0;
  }

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

  .scenario-guide,
  .cooperation-entry {
    padding: 24px 16px 0;
  }

  /* 合作流程页 */
  .process-timeline {
    padding: 24px 16px 0;
  }

  .process-step {
    grid-template-columns: 56px 1fr;
    gap: 16px;
    padding: 20px 0;
  }

  .process-step .step-number {
    width: 56px;
    height: 56px;
    font-size: 16px;
  }

  .timeline-note,
  .delivery-standard,
  .faq-entry {
    padding: 24px 16px 0;
  }

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

  .content-media-inline img {
    height: 200px;
  }

  /* 更新记录页 */
  .page-layout.sidebar-left {
    grid-template-columns: 1fr;
    padding: 24px 16px 0;
    gap: 24px;
  }

  .sidebar-nav {
    position: static;
    top: auto;
  }

  .version-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .version-filter li {
    margin-bottom: 0;
  }

  .filter-link {
    padding: 8px 14px;
  }

  .update-featured {
    grid-template-columns: 1fr;
  }

  .update-media img {
    height: 180px;
    min-height: 0;
  }

  /* FAQ 页 */
  .faq-intro-image {
    padding: 16px 16px 0;
  }

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

  .faq-accordion {
    padding: 24px 16px 0;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 15px;
  }

  .faq-item p {
    padding: 0 16px 14px;
    font-size: 14px;
  }

  .next-step-suggestion {
    padding: 24px 16px 0;
  }

  /* 404 */
  .error-main {
    padding: 60px 16px;
  }

  .error-code {
    font-size: 72px;
  }

  .error-links ul {
    grid-template-columns: 1fr;
  }
}

/* 超小屏 */
@media (max-width: 480px) {
  .service-cards {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-section .hero-content {
    padding: 40px 16px 32px;
  }

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

  .gallery-main img {
    height: 220px;
  }

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

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