/* ============================================================
   base — 全局基础样式、变量、reset
   ============================================================ */
:root {
  --bg: #f7f6f3;
  --text: #1c1c1e;
  --terminal-bg: #161618;
  --terminal-text: #e8e6e1;
  --green: #2f9e44;
  --link: #1a73e8;
  --border: #e2e0da;
  --yellow: #d9a404;
  --white: #ffffff;
  --container-width: 1200px;
  --header-height: 64px;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(28, 28, 30, 0.06);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover {
  color: #1558b0;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-mono);
  line-height: 1.3;
  color: var(--text);
}

/* ============================================================
   layout — 全站统一外壳：页头、页脚、主容器、面包屑
   ============================================================ */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}

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

.brand-mark {
  display: inline-block;
  width: 32px;
  height: 32px;
  background: var(--terminal-bg);
  border-radius: 6px;
  position: relative;
  flex-shrink: 0;
}

.brand-mark::before {
  content: '>';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
}

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

.site-nav .nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--text);
  border-radius: 4px;
  position: relative;
  transition: color 0.2s, background 0.2s;
}

.site-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.2s ease;
}

.site-nav .nav-link:hover {
  color: var(--green);
}

.site-nav .nav-link:hover::after {
  transform: scaleX(1);
}

.site-nav .nav-link.is-current {
  color: var(--green);
  font-weight: 600;
}

.site-nav .nav-link.is-current::after {
  transform: scaleX(1);
}

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

.nav-toggle:hover {
  background: rgba(28, 28, 30, 0.05);
}

.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

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

.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
  width: 100%;
}

.breadcrumb {
  padding: 20px 0 0;
  font-size: 14px;
  color: #6b6b70;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: #6b6b70;
}

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

.breadcrumb-sep {
  color: #b0afa9;
}

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

.page-header {
  padding: 24px 0 8px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.25;
}

.page-title-block {
  padding: 0 0 32px;
}

.page-subtitle {
  font-size: 16px;
  color: #55555a;
  max-width: 720px;
}

.page-title-desc {
  font-size: 16px;
  color: #55555a;
  max-width: 720px;
}

.site-footer {
  background: var(--terminal-bg);
  color: var(--terminal-text);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #b0b0b6;
  max-width: 360px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.footer-link {
  font-size: 14px;
  color: #b0b0b6;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--green);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 24px;
  text-align: center;
}

.copyright {
  font-size: 13px;
  color: #8a8a90;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* ============================================================
   components — 通用组件：按钮、终端列表、卡片、FAQ、时间线等
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

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

.btn-primary:hover {
  background: #2a8a3c;
  color: var(--white);
  box-shadow: 0 2px 8px rgba(47, 158, 68, 0.25);
}

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

.btn-secondary:hover {
  border-color: var(--text);
  color: var(--text);
  background: rgba(28, 28, 30, 0.03);
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  position: relative;
  padding-left: 20px;
}

.section-title::before {
  content: '>';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--green);
  font-weight: 700;
}

.section-desc {
  font-size: 15px;
  color: #55555a;
  max-width: 720px;
  line-height: 1.7;
}

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

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

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

/* 通知横幅 */
.notify-banner {
  background: var(--yellow);
  color: #1c1c1e;
  font-size: 14px;
  position: relative;
  z-index: 101;
}

.notify-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.notify-text {
  font-size: 14px;
  line-height: 1.5;
}

.notify-close {
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #1c1c1e;
  border-radius: 4px;
  flex-shrink: 0;
}

.notify-close:hover {
  background: rgba(28, 28, 30, 0.08);
}

/* 终端风格服务目录 */
.terminal-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
}

.terminal-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
  flex-wrap: wrap;
}

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

.terminal-item:hover {
  background: rgba(47, 158, 68, 0.04);
}

.terminal-prompt {
  font-family: var(--font-mono);
  color: var(--green);
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.terminal-cmd {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  min-width: 120px;
}

.terminal-desc {
  font-size: 15px;
  color: #55555a;
  flex: 1;
  min-width: 200px;
}

.terminal-link {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--link);
  white-space: nowrap;
  flex-shrink: 0;
}

.terminal-link:hover {
  color: var(--green);
}

/* 工作现场图组 */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.gallery-item {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.gallery-item:hover {
  box-shadow: 0 4px 12px rgba(28, 28, 30, 0.08);
}

.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.gallery-item figcaption {
  padding: 14px 18px;
  font-size: 14px;
  color: #55555a;
  line-height: 1.5;
}

/* 场景卡片 */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.scenario-card:hover {
  border-color: var(--green);
  box-shadow: 0 4px 12px rgba(28, 28, 30, 0.06);
}

.scenario-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  position: relative;
  padding-left: 16px;
}

.scenario-name::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.scenario-text {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
  margin-bottom: 16px;
}

.scenario-link {
  font-size: 14px;
  font-weight: 500;
}

/* 流程预览（首页横向时间线） */
.timeline-horizontal {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 32px;
  counter-reset: timeline;
}

.timeline-step {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 18px;
  position: relative;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.timeline-step:hover {
  border-color: var(--green);
  box-shadow: 0 4px 12px rgba(28, 28, 30, 0.06);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--terminal-bg);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 12px;
}

.step-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 13px;
  color: #55555a;
  line-height: 1.6;
}

.process-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--link);
  padding: 8px 0;
  min-height: 44px;
}

.process-link:hover {
  color: var(--green);
}

/* 合作入口 */
.cooperation-cta {
  background: var(--terminal-bg);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
}

.cta-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.cta-desc {
  font-size: 15px;
  color: #b0b0b6;
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

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

.cooperation-cta .btn-primary {
  background: var(--green);
  border-color: var(--green);
}

.cooperation-cta .btn-secondary {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--white);
}

.cooperation-cta .btn-secondary:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.05);
}

/* 相关链接 */
.related-links {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-right: 8px;
}

.related-links-item {
  font-size: 14px;
  color: var(--link);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--white);
  transition: border-color 0.2s, color 0.2s;
}

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

/* 流程页时间线 */
.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.timeline-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

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

.timeline-marker {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--terminal-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--green);
  margin-top: 4px;
}

.timeline-content {
  flex: 1;
  min-width: 0;
}

.timeline-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
  margin-bottom: 16px;
}

.timeline-io {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.io-block {
  background: var(--terminal-bg);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.io-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
  margin-bottom: 8px;
  display: block;
}

.io-list {
  font-size: 13px;
  color: #c8c8ce;
  line-height: 1.6;
}

.io-list li {
  padding: 2px 0;
  position: relative;
  padding-left: 16px;
}

.io-list li::before {
  content: '-';
  position: absolute;
  left: 0;
  color: var(--green);
}

/* 协作提醒 */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.note-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.note-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  position: relative;
  padding-left: 16px;
}

.note-title::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.note-text {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
}

/* 相关卡片（流程页底部） */
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.related-card:hover {
  border-color: var(--green);
  box-shadow: 0 4px 12px rgba(28, 28, 30, 0.06);
}

.related-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
}

.related-text {
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}

/* 工作场景（流程页） */
.work-scene-section {
  margin-top: 48px;
}

.scene-figure {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.scene-caption {
  padding: 14px 20px;
  font-size: 14px;
  color: #55555a;
  line-height: 1.5;
  border-top: 1px solid var(--border);
}

/* FAQ */
.faq-visual {
  margin-bottom: 32px;
}

.faq-figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

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

.faq-intro {
  margin-bottom: 32px;
}

.faq-intro-inner {
  max-width: 800px;
}

.faq-lead {
  font-size: 16px;
  color: #55555a;
  line-height: 1.8;
}

.faq-container {
  max-width: 800px;
}

.faq-container .section-title {
  margin-bottom: 24px;
}

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

.faq-question {
  padding: 20px 24px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  position: relative;
  padding-right: 48px;
  list-style: none;
  transition: background 0.2s;
}

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

.faq-question::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--green);
  transition: transform 0.2s;
}

.faq-item[open] .faq-question {
  background: rgba(47, 158, 68, 0.04);
}

.faq-item[open] .faq-question::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: #55555a;
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* 联系提示 */
.contact-hint {
  margin-top: 48px;
  background: var(--terminal-bg);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-hint-inner {
  max-width: 800px;
}

.hint-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
}

.hint-text {
  font-size: 15px;
  color: #b0b0b6;
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.hint-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 20px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  color: var(--white);
  font-size: 14px;
  transition: border-color 0.2s, background 0.2s;
}

.hint-link:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(255, 255, 255, 0.04);
}

/* 服务表格 */
.table-wrapper {
  overflow-x: auto;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

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

.service-table th {
  background: var(--terminal-bg);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  padding: 14px 20px;
  white-space: nowrap;
}

.service-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
  line-height: 1.6;
}

.service-table tr:last-child td {
  border-bottom: none;
}

.service-table tr:hover td {
  background: rgba(47, 158, 68, 0.03);
}

/* 服务详情 */
.service-detail-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
  margin-top: 48px;
}

.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

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

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

.service-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-tagline {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--green);
  margin-bottom: 16px;
}

.service-desc {
  font-size: 15px;
  color: #55555a;
  line-height: 1.7;
  margin-bottom: 20px;
}

.deliverables {
  margin-bottom: 16px;
}

.deliverables h3,
.collab-mode h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
  position: relative;
  padding-left: 14px;
}

.deliverables h3::before,
.collab-mode h3::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.deliverables ul {
  padding-left: 14px;
}

.deliverables li {
  font-size: 14px;
  color: #55555a;
  line-height: 1.6;
  padding: 3px 0;
  position: relative;
  padding-left: 14px;
}

.deliverables li::before {
  content: '-';
  position: absolute;
  left: 0;
  color: var(--green);
}

.collab-mode p {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
}

/* 服务选择建议 */
.recommendation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rec-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.rec-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}

.rec-card > p {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
  margin-bottom: 16px;
}

.rec-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rec-link a {
  font-size: 14px;
  font-weight: 500;
}

/* ============================================================
   pages — 各页面专属模块
   ============================================================ */
/* 首页 */
.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
  width: 100%;
}

.hero-section {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 64px;
}

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

.hero-title {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 12px;
  color: var(--text);
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--green);
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 16px;
  color: #55555a;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}

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

.hero-link {
  font-size: 15px;
  color: var(--link);
  padding: 8px 4px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.hero-link:hover {
  color: var(--green);
}

.hero-visual {
  min-width: 0;
}

.hero-figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(28, 28, 30, 0.1);
}

.hero-image {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

/* 首页各 section 间距 */
.service-directory,
.scenario-section,
.process-preview,
.work-gallery {
  padding: 48px 0;
}

.cooperation-cta {
  margin-top: 48px;
}

/* 关于我们 */
.page-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 0 64px;
  width: 100%;
}

.page-title-area {
  padding: 0 0 32px;
}

.page-title-desc {
  font-size: 16px;
  color: #55555a;
  max-width: 720px;
  line-height: 1.8;
}

.about-intro {
  padding: 32px 0;
}

.about-intro .section-heading {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-left: 20px;
}

.about-intro .section-heading::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.about-intro-text {
  font-size: 16px;
  color: #55555a;
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 800px;
}

.about-figure {
  margin: 24px 0 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.about-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.about-figure figcaption {
  padding: 12px 16px;
  font-size: 14px;
  color: #55555a;
  background: var(--white);
  border: 1px solid var(--border);
  border-top: none;
}

.service-principles,
.cooperation-principles,
.service-boundary {
  padding: 32px 0;
}

.section-heading {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-left: 20px;
}

.section-heading::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.principles-lead,
.cooperation-lead {
  font-size: 16px;
  color: #55555a;
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 800px;
}

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

.principle-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.principle-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  position: relative;
  padding-left: 16px;
}

.principle-title::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.principle-text {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
}

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

.cooperation-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.cooperation-item-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  position: relative;
  padding-left: 16px;
}

.cooperation-item-title::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.cooperation-item-text {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
}

.boundary-text {
  font-size: 16px;
  color: #55555a;
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 800px;
}

/* 合作指南 */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
}

.prepare-section,
.communication-section,
.division-section,
.next-steps-section {
  padding: 32px 0;
}

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

.prepare-item {
  display: flex;
  gap: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  align-items: flex-start;
}

.prepare-step {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--terminal-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--green);
}

.prepare-content {
  flex: 1;
  min-width: 0;
}

.prepare-content h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.prepare-content p {
  font-size: 14px;
  color: #55555a;
  line-height: 1.7;
}

.communication-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: center;
}

.communication-figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.communication-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.communication-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: #55555a;
  background: var(--white);
  border: 1px solid var(--border);
  border-top: none;
}

.communication-content p {
  font-size: 15px;
  color: #55555a;
  line-height: 1.8;
  margin-bottom: 16px;
}

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

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

.division-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.division-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-left: 16px;
}

.division-card h3::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--green);
}

.division-list li {
  font-size: 14px;
  color: #55555a;
  line-height: 1.6;
  padding: 4px 0;
  position: relative;
  padding-left: 16px;
}

.division-list li::before {
  content: '-';
  position: absolute;
  left: 0;
  color: var(--green);
}

.next-steps-block {
  background: var(--terminal-bg);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
}

.next-steps-block h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.next-steps-block p {
  font-size: 15px;
  color: #b0b0b6;
  margin-bottom: 24px;
}

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

.next-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 20px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  color: var(--white);
  font-size: 14px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.next-link:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(255, 255, 255, 0.04);
}

/* 404 */
.error-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 80px 24px;
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-content {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 64px;
  font-weight: 700;
  color: var(--green);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: #55555a;
  line-height: 1.7;
  margin-bottom: 32px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  background: var(--green);
  color: var(--white);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.2s, box-shadow 0.2s;
}

.error-btn:hover {
  background: #2a8a3c;
  color: var(--white);
  box-shadow: 0 2px 8px rgba(47, 158, 68, 0.25);
}

/* ============================================================
   responsive — 响应式断点
   ============================================================ */
@media (max-width: 992px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 48px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-visual {
    order: 2;
  }

  .hero-image {
    height: 260px;
  }

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

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

  .scenario-grid,
  .recommendation-grid,
  .notes-grid,
  .principle-list,
  .cooperation-list {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

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

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

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav .nav-list {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 2px;
    box-shadow: 0 8px 16px rgba(28, 28, 30, 0.08);
  }

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

  .site-nav .nav-link {
    display: block;
    padding: 12px 16px;
    font-size: 16px;
  }

  .site-nav .nav-link::after {
    display: none;
  }

  .site-header {
    position: relative;
  }

  .site-nav {
    position: static;
  }

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

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

  .page-title {
    font-size: 28px;
  }

  .hero-title {
    font-size: 32px;
  }

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

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

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

  .scenario-grid,
  .recommendation-grid,
  .notes-grid,
  .principle-list,
  .cooperation-list,
  .related-grid,
  .division-grid {
    grid-template-columns: 1fr;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

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

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

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

  .cta-actions .btn {
    width: 100%;
  }

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

  .prepare-item {
    flex-direction: column;
    gap: 12px;
  }

  .next-links {
    flex-direction: column;
    align-items: stretch;
  }

  .next-link {
    justify-content: center;
  }

  .hint-links {
    flex-direction: column;
    align-items: stretch;
  }

  .hint-link {
    justify-content: center;
  }

  .service-item {
    padding: 20px;
  }

  .service-table {
    min-width: 560px;
  }

  .page-header {
    padding: 16px 0 4px;
  }

  .breadcrumb {
    padding-top: 12px;
  }

  .error-main {
    padding: 48px 16px;
  }
}

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

  .header-inner {
    gap: 8px;
  }

  .brand {
    font-size: 17px;
  }

  .brand-mark {
    width: 28px;
    height: 28px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

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

  .section-title {
    font-size: 20px;
  }

  .page-title {
    font-size: 24px;
  }

  .terminal-item {
    flex-direction: column;
    gap: 6px;
    padding: 16px 18px;
  }

  .terminal-desc {
    min-width: 0;
  }

  .terminal-link {
    align-self: flex-start;
  }

  .gallery-item img {
    height: 180px;
  }

  .scene-image {
    height: 220px;
  }

  .about-image {
    height: 220px;
  }

  .communication-img {
    height: 200px;
  }

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

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

  .hero-image {
    height: 200px;
  }

  .footer-bottom {
    padding: 16px;
  }

  .copyright {
    font-size: 12px;
  }
}