/* roulang page: index */
:root {
  --primary: #1A3C34;
  --primary-dark: #142E28;
  --primary-soft: #254A41;
  --accent: #E07A3F;
  --accent-hover: #C9642F;
  --bg: #F5F1E8;
  --bg-light: #FAF8F2;
  --white: #FFFFFF;
  --text: #22261F;
  --text-body: #4A5248;
  --text-light: #8A9385;
  --border: #E3DECF;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 12px rgba(26,60,52,0.05);
  --shadow-lg: 0 8px 30px rgba(26,60,52,0.1);
  --transition: 0.25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
ul,
ol {
  list-style: none;
}
input,
button,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-head {
  margin-bottom: 40px;
  max-width: 640px;
}
.section-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-intro {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.75;
}
.section-divider {
  width: 40px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 16px 0 20px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 28px;
  height: 48px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(224,122,63,0.25);
}
.btn-primary:active {
  transform: translateY(-1px);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(224,122,63,0.3);
  outline-offset: 2px;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}
.btn-outline:focus-visible {
  outline: 3px solid rgba(26,60,52,0.25);
  outline-offset: 2px;
}
.btn-block {
  width: 100%;
}
.app-shell {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  height: 100vh;
  background: var(--white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}
.shell-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}
.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0;
}
.logo-text {
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.shell-nav {
  padding: 20px 12px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 400;
  color: var(--text-body);
  position: relative;
  transition: background var(--transition), color var(--transition);
}
.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nav-item:hover {
  background: var(--bg-light);
  color: var(--primary);
}
.nav-item.active {
  color: var(--primary);
  font-weight: 500;
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--primary);
  border-radius: 0 2px 2px 0;
}
.nav-item.active {
  background: var(--bg-light);
}
.shell-bottom {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}
.shell-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 40px;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.shell-login-btn:hover {
  background: var(--primary);
  color: #fff;
}
.shell-copy {
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-light);
  text-align: center;
}
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 100;
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.topbar-logo .logo-mark {
  width: 32px;
  height: 32px;
  font-size: 15px;
}
.topbar-logo-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
}
.hamburger-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--primary);
  transition: background var(--transition);
}
.hamburger-btn:hover {
  background: var(--bg-light);
}
.hamburger-btn svg {
  width: 22px;
  height: 22px;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.drawer-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.35);
  z-index: 200;
  opacity: 0;
  transition: opacity var(--transition);
}
.drawer-overlay.visible {
  display: block;
  opacity: 1;
}
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: var(--white);
  z-index: 210;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 20px;
}
.mobile-drawer.open {
  transform: translateX(0);
}
.drawer-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--text-body);
  border-radius: 50%;
  transition: background var(--transition);
}
.drawer-close:hover {
  background: var(--bg-light);
}
.drawer-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  padding: 16px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.drawer-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 12px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-body);
  transition: background var(--transition), color var(--transition);
}
.drawer-nav a:hover,
.drawer-nav a.active {
  background: var(--bg-light);
  color: var(--primary);
  font-weight: 500;
}
.drawer-bottom {
  margin-top: auto;
  padding-top: 20px;
}
.drawer-login-btn {
  display: block;
  text-align: center;
  padding: 12px;
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  color: var(--primary);
  font-size: 15px;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.drawer-login-btn:hover {
  background: var(--primary);
  color: #fff;
}
.main-content {
  margin-left: 220px;
  min-height: 100vh;
}
.hero {
  padding: 72px 0 80px;
  background-image: linear-gradient(to bottom, rgba(245,241,232,0.94) 0%, rgba(245,241,232,0.78) 45%, rgba(245,241,232,0.92) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border);
}
.hero-content {
  display: grid;
  grid-template-columns: 58% 42%;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-block;
  background: rgba(26,60,52,0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 42px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 0;
}
.hero-divider {
  width: 40px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 22px 0 18px;
}
.hero-subtitle {
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}
.hero-points {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.hero-points li {
  font-size: 13px;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-points li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.hero-login-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 32px;
  max-width: 380px;
  margin-left: auto;
  width: 100%;
}
.hero-login-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}
.card-subtitle {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
}
.login-form .form-group {
  margin-bottom: 14px;
}
.login-form label {
  display: block;
  font-size: 13px;
  color: var(--text-body);
  margin-bottom: 6px;
}
.login-form input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 14px;
  font-size: 14px;
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.login-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(224,122,63,0.18);
}
.login-form input::placeholder {
  color: #9AA395;
}
.code-row {
  display: flex;
  gap: 8px;
}
.code-row input {
  flex: 1;
}
.code-btn {
  height: 44px;
  padding: 0 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-light);
  color: var(--primary);
  font-size: 13px;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}
.code-btn:hover {
  background: var(--primary);
  color: #fff;
}
.login-form .btn-block {
  margin-top: 8px;
}
.login-divider {
  display: flex;
  align-items: center;
  margin: 22px 0 16px;
  color: var(--text-light);
  font-size: 12px;
}
.login-divider::before,
.login-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.login-divider span {
  padding: 0 12px;
  white-space: nowrap;
}
.qr-placeholder {
  height: 120px;
  border: 2px dashed var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 13px;
  margin-bottom: 16px;
  background: var(--bg-light);
  transition: border-color var(--transition);
}
.qr-placeholder:hover {
  border-color: var(--primary);
}
.qr-placeholder svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.register-link {
  text-align: center;
  font-size: 14px;
  color: var(--text-body);
}
.register-link a {
  color: var(--primary);
  font-weight: 500;
  border-bottom: 1px solid transparent;
}
.register-link a:hover {
  border-bottom-color: var(--primary);
}
.services-section {
  padding: 80px 0;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.service-item {
  padding: 36px 30px 32px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 300px;
  position: relative;
  background: var(--white);
  transition: box-shadow var(--transition);
}
.service-item + .service-item {
  border-left: 1px solid var(--border);
}
.service-item:hover {
  box-shadow: var(--shadow-lg);
  z-index: 1;
}
.service-top {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 26px;
}
.service-num {
  font-size: 28px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  font-variant: tabular-nums;
}
.service-line {
  width: 1px;
  height: 40px;
  background: var(--border);
  display: inline-block;
}
.service-item h3 {
  font-size: 22px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 12px;
}
.service-item p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 4px;
}
.service-icon {
  margin-top: auto;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--primary);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.service-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.service-item:hover .service-icon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.stats-section {
  background: var(--primary);
  padding: 56px 0;
}
.stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.stats-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  color: #fff;
}
.stat-item + .stat-item {
  border-left: 1px solid rgba(255,255,255,0.15);
}
.stat-num {
  display: block;
  font-size: 62px;
  font-weight: 700;
  color: #E3F0E9;
  line-height: 1.1;
  font-variant: tabular-nums;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-top: 10px;
  display: block;
  letter-spacing: 0.02em;
}
.cases-section {
  padding: 80px 0;
}
.case-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}
.case-item:last-child {
  margin-bottom: 0;
}
.case-item.reversed .case-media {
  order: 2;
}
.case-item.reversed .case-content {
  order: 1;
}
.case-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-light);
  aspect-ratio: 4/3;
}
.case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.case-item:hover .case-media img {
  transform: scale(1.03);
}
.case-content {
  padding: 20px 0;
}
.case-badge {
  display: inline-block;
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 4px 14px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.case-content h3 {
  font-size: 24px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 12px;
}
.case-content p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 14px;
}
.case-year {
  font-size: 13px;
  color: var(--text-light);
  letter-spacing: 0.03em;
}
.news-section {
  padding: 80px 0;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.news-section .container {
  position: relative;
}
.more-link {
  position: absolute;
  right: 24px;
  top: 4px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.more-link:hover {
  color: var(--accent);
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-item {
  display: grid;
  grid-template-columns: 120px 1fr 120px;
  gap: 20px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.news-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}
.news-thumb {
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-light);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-item:hover .news-thumb img {
  transform: scale(1.03);
}
.news-info {
  min-width: 0;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.news-cat {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}
.news-time {
  font-size: 12px;
  color: var(--text-light);
}
.news-title {
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition);
}
.news-item:hover .news-title {
  color: var(--primary);
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}
.news-side {
  text-align: right;
}
.news-read {
  font-size: 13px;
  color: var(--text-light);
  white-space: nowrap;
}
.news-empty {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px 30px;
  text-align: center;
  color: var(--text-light);
  background: var(--white);
}
.news-empty svg {
  width: 36px;
  height: 36px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin: 0 auto 14px;
}
.news-empty p {
  font-size: 15px;
  color: var(--text-body);
}
.solutions-section {
  padding: 80px 0;
}
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.solution-card {
  background: #F5F1E8;
  border-top: 4px solid var(--primary);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 40px 36px;
  transition: box-shadow var(--transition);
}
.solution-card:hover {
  box-shadow: var(--shadow-lg);
}
.solution-top {
  margin-bottom: 28px;
}
.solution-num {
  font-size: 48px;
  font-weight: 600;
  color: rgba(26,60,52,0.15);
  line-height: 1;
  font-variant: tabular-nums;
}
.solution-card h3 {
  font-size: 24px;
  font-weight: 500;
  color: var(--text);
  margin-top: 8px;
}
.solution-points {
  margin: 0 0 28px;
}
.solution-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(227,222,207,0.7);
  font-size: 15px;
  color: var(--text-body);
}
.solution-points li:last-child {
  border-bottom: none;
}
.solution-points li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.solution-link:hover {
  border-bottom-color: var(--primary);
}
.faq-section {
  padding: 80px 0;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
}
.faq-list {
  max-width: 860px;
}
.faq-item {
  border-top: 1px solid var(--border);
}
.faq-item:last-child {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 12px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  gap: 16px;
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 300;
  color: var(--text-light);
  transition: transform var(--transition), color var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.active .faq-answer {
  max-height: 400px;
}
.faq-answer p {
  padding: 0 12px 22px;
  font-size: 15px;
  color: #5C635A;
  line-height: 1.8;
}
.contact-section {
  background: var(--primary);
  padding: 80px 0;
  color: #fff;
}
.contact-grid {
  display: grid;
  grid-template-columns: 44% 56%;
  gap: 64px;
  align-items: start;
}
.contact-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 4px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.contact-info h2 {
  font-size: 34px;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 14px;
}
.contact-info p {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
}
.contact-info ul {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact-info li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  color: rgba(255,255,255,0.9);
}
.contact-info li svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.contact-form-wrap {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  height: 48px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.07);
  border-radius: 8px;
  padding: 0 16px;
  color: #fff;
  font-size: 15px;
  margin-bottom: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255,255,255,0.4);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(224,122,63,0.25);
}
.contact-form textarea {
  height: 120px;
  padding: 14px 16px;
  resize: vertical;
}
.contact-form .btn-block {
  height: 48px;
}
.form-success {
  display: none;
  background: rgba(255,255,255,0.12);
  color: #fff;
  font-size: 14px;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  margin-top: 14px;
}
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand .footer-logo .logo-mark {
  width: 32px;
  height: 32px;
  font-size: 15px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  max-width: 260px;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.03em;
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 2.1;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: #fff;
}
.footer-col p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 2;
}
.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.3);
}
@media (min-width: 992px) {
  .main-content {
    margin-left: 220px;
  }
}
@media (max-width: 991px) and (min-width: 768px) {
  .app-shell {
    width: 60px;
  }
  .main-content {
    margin-left: 60px;
  }
  .shell-logo {
    justify-content: center;
    padding: 20px 0 16px;
  }
  .shell-logo .logo-text {
    display: none;
  }
  .shell-logo .logo-mark {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }
  .shell-nav {
    padding: 16px 8px;
    align-items: stretch;
  }
  .nav-item {
    justify-content: center;
    padding: 12px 0;
  }
  .nav-item .nav-label {
    display: none;
  }
  .nav-item svg {
    width: 20px;
    height: 20px;
  }
  .shell-bottom {
    padding: 12px 8px;
  }
  .shell-login-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    margin: 0 auto;
    font-size: 0;
  }
  .shell-login-btn::before {
    content: "\21BB";
    font-size: 16px;
  }
  .shell-copy {
    display: none;
  }
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .hero h1 {
    font-size: 36px;
  }
}
@media (max-width: 767px) {
  .app-shell {
    display: none;
  }
  .mobile-topbar {
    display: flex;
  }
  .main-content {
    margin-left: 0;
    margin-top: 60px;
  }
  .container {
    padding: 0 16px;
  }
  .hero {
    padding: 44px 0 48px;
  }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .hero-login-card {
    margin-left: 0;
    max-width: 100%;
    padding: 24px;
  }
  .hero-cta .btn {
    flex: 1;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .service-item + .service-item {
    border-left: none;
    border-top: 1px solid var(--border);
  }
  .service-item {
    min-height: auto;
    padding: 28px 24px;
  }
  .stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }
  .stat-item {
    padding: 20px 12px;
  }
  .stat-num {
    font-size: 44px;
  }
  .stat-item:nth-child(3) {
    border-left: none;
    border-top: 1px solid rgba(255,255,255,0.15);
  }
  .stat-item:nth-child(4) {
    border-top: 1px solid rgba(255,255,255,0.15);
  }
  .case-item {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 48px;
  }
  .case-item.reversed .case-media {
    order: 0;
  }
  .case-item.reversed .case-content {
    order: 1;
  }
  .case-media {
    aspect-ratio: 16/10;
  }
  .solutions-grid {
    grid-template-columns: 1fr;
  }
  .solution-card {
    padding: 28px 24px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact-form-wrap {
    padding: 24px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .news-item {
    grid-template-columns: 100px 1fr;
    padding: 12px;
    gap: 14px;
  }
  .news-thumb {
    width: 100px;
    height: 68px;
  }
  .news-side {
    display: none;
  }
  .news-title {
    font-size: 16px;
  }
  .news-excerpt {
    -webkit-line-clamp: 2;
  }
  .more-link {
    position: static;
    display: inline-block;
    margin-bottom: 16px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #1A3C34;
  --primary-dark: #132E28;
  --accent: #E07A3F;
  --accent-hover: #C9642F;
  --bg: #F5F1E8;
  --card-bg: #FFFFFF;
  --text: #22261F;
  --text-body: #4A5248;
  --text-muted: #9AA395;
  --border: #E3DECF;
  --radius-card: 12px;
  --radius-login: 16px;
  --radius-btn: 6px;
  --radius-input: 8px;
  --radius-badge: 4px;
  --shadow-sm: 0 2px 12px rgba(26,60,52,0.05);
  --shadow-hover: 0 8px 30px rgba(26,60,52,0.1);
  --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --space-section: 80px;
  --space-mobile: 48px;
  --sidebar-width: 220px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

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

ul, ol {
  list-style: none;
}

input, button, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 左侧 App Shell 导航 ========== */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.shell-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--card-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 28px 16px 20px;
  z-index: 100;
  transition: transform 0.3s ease;
}

.shell-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

.shell-brand span:last-child {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.shell-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 8px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.4;
  margin-bottom: 4px;
  border-left: 3px solid transparent;
  transition: background 0.25s ease, color 0.25s ease;
  position: relative;
}

.shell-nav .nav-item svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.shell-nav .nav-item:hover {
  background: var(--bg);
  color: var(--primary);
}

.shell-nav .nav-item.active {
  background: var(--bg);
  color: var(--primary);
  font-weight: 600;
  border-left-color: var(--primary);
}

.shell-bottom {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.shell-login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 0;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  transition: background 0.25s ease, transform 0.25s ease;
}

.shell-login-btn:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

.shell-copy {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}

.shell-main {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
}

/* 移动端顶栏 */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  z-index: 200;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.mobile-header .brand-text {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

.mobile-header .btn-menu {
  background: none;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.mobile-header .btn-menu svg {
  width: 22px;
  height: 22px;
  stroke: var(--text);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(34, 38, 31, 0.4);
  z-index: 150;
  backdrop-filter: blur(2px);
}

.drawer-overlay.active {
  display: block;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  background: var(--card-bg);
  z-index: 300;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.drawer-close {
  width: 36px;
  height: 36px;
  background: var(--bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-close svg {
  width: 18px;
  height: 18px;
  stroke: var(--text);
  fill: none;
  stroke-width: 2;
}

.drawer-nav {
  flex: 1;
}

.drawer-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border-radius: 8px;
  color: var(--text-body);
  font-size: 16px;
  margin-bottom: 4px;
}

.drawer-nav .nav-item.active {
  background: var(--bg);
  color: var(--primary);
  font-weight: 600;
}

.drawer-nav .nav-item svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ========== 页面主体 ========== */
.page-main {
  padding-top: 40px;
}

/* 面包屑 */
.breadcrumb {
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-muted);
}

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

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

.breadcrumb .sep {
  margin: 0 8px;
  color: var(--border);
}

/* ========== Hero 区 ========== */
.cat-hero {
  position: relative;
  background: linear-gradient(90deg, rgba(245,241,232,0.94) 0%, rgba(245,241,232,0.88) 50%, rgba(245,241,232,0.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-radius: 16px;
  padding: 48px;
  margin-bottom: var(--space-section);
  min-height: 340px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.cat-hero-content {
  max-width: 580px;
  position: relative;
  z-index: 2;
}

.cat-hero h1 {
  font-size: 42px;
  line-height: 1.2;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.hero-line {
  width: 40px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 16px 0 20px;
}

.cat-hero p {
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.75;
  max-width: 520px;
}

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

/* ========== 按钮 ========== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224, 122, 63, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(224, 122, 63, 0.3);
  outline-offset: 2px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--primary);
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  border: 1.5px solid var(--primary);
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(0);
}

.btn-outline:focus-visible {
  outline: 3px solid rgba(26, 60, 52, 0.25);
  outline-offset: 2px;
}

/* ========== 两栏内容 ========== */
.two-col {
  display: grid;
  grid-template-columns: 64% 1fr;
  gap: 32px;
  margin-bottom: var(--space-section);
}

.col-left {
  min-width: 0;
}

.col-left .section-head {
  margin-bottom: 28px;
}

.col-left .section-head h2 {
  font-size: 30px;
  font-weight: 500;
  line-height: 1.3;
}

.section-head p {
  color: var(--text-body);
  margin-top: 8px;
  font-size: 14px;
}

.section-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

/* 服务列表卡片（左列） */
.service-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.service-list-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  display: flex;
  gap: 20px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.service-list-item .item-num {
  font-size: 28px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  width: 48px;
}

.service-list-item .item-body {
  flex: 1;
}

.service-list-item .item-body h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
  transition: color 0.25s ease;
}

.service-list-item:hover .item-body h3 {
  color: var(--primary);
}

.service-list-item .item-body p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 12px;
}

.item-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 16px;
}

.item-meta .badge {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.02em;
}

.item-meta .time {
  font-variant-numeric: tabular-nums;
}

/* 侧边栏 */
.col-right {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.side-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.side-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.75;
}

.side-card .help-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-body);
}

.side-card .help-list li:last-child {
  border-bottom: none;
}

.side-card .help-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  flex-shrink: 0;
}

.hot-item {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}

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

.hot-item img {
  width: 72px;
  height: 56px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}

.hot-item .hot-info h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 4px;
  transition: color 0.25s ease;
}

.hot-item:hover .hot-info h4 {
  color: var(--primary);
}

.hot-item .hot-info span {
  font-size: 12px;
  color: var(--text-muted);
}

.side-profile {
  text-align: center;
  padding: 32px 28px;
}

.side-profile .profile-icon {
  width: 64px;
  height: 64px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
  color: #fff;
}

.side-profile h4 {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 8px;
}

.side-profile p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ========== 使用场景 ========== */
.scenario-section {
  margin-bottom: var(--space-section);
}

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

.scenario-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.scenario-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}

.scenario-icon {
  width: 48px;
  height: 48px;
  background: var(--bg);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.scenario-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.scenario-card h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 10px;
  color: var(--text);
}

.scenario-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.75;
}

/* ========== 登录流程 ========== */
.flow-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 48px;
  margin-bottom: var(--space-section);
}

.flow-section .section-head {
  text-align: center;
  margin-bottom: 40px;
}

.flow-section .section-head h2 {
  font-size: 30px;
  font-weight: 500;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}

.flow-step {
  text-align: center;
  position: relative;
}

.flow-step::after {
  content: '';
  position: absolute;
  top: 24px;
  right: -18px;
  width: 36px;
  height: 1px;
  background: var(--border);
}

.flow-step:last-child::after {
  display: none;
}

.flow-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  margin: 0 auto 16px;
  font-variant-numeric: tabular-nums;
}

.flow-step h3 {
  font-size: 17px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}

.flow-step p {
  font-size: 13px;
  color: var(--text-body);
  line-height: 1.6;
}

/* ========== FAQ ========== */
.faq-section {
  margin-bottom: var(--space-section);
}

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

.faq-list {
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 16px;
  color: var(--text);
  font-weight: 500;
  cursor: pointer;
  background: none;
  width: 100%;
  text-align: left;
  transition: color 0.25s ease;
}

.faq-q:hover {
  color: var(--primary);
}

.faq-icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-body);
  border-radius: 1px;
  transition: background 0.25s ease;
}

.faq-icon::before {
  width: 2px;
  height: 16px;
  left: 9px;
  top: 2px;
}

.faq-icon::after {
  width: 16px;
  height: 2px;
  left: 2px;
  top: 9px;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-item.active .faq-icon::before,
.faq-item.active .faq-icon::after {
  background: var(--accent);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-a {
  max-height: 300px;
  padding-bottom: 20px;
}

.faq-a p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  padding-right: 40px;
}

/* ========== CTA ========== */
.cta-section {
  background: var(--primary);
  border-radius: 16px;
  padding: 56px 48px;
  text-align: center;
  margin-bottom: var(--space-section);
}

.cta-section h2 {
  color: #fff;
  font-size: 30px;
  font-weight: 500;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  margin-bottom: 28px;
}

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

.cta-section .btn-primary {
  background: var(--accent);
}

.cta-section .btn-primary:hover {
  background: var(--accent-hover);
}

.cta-section .btn-white-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  color: #fff;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.cta-section .btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 32px;
  margin-top: 40px;
}

.site-footer .container {
  max-width: 1200px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-brand .logo-mark {
  background: var(--accent);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 260px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 16px;
}

.footer-col a,
.footer-col p {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 8px;
  transition: color 0.25s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
  .flow-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 32px;
  }

  .flow-step::after {
    display: none;
  }
}

@media (max-width: 991px) {
  :root {
    --sidebar-width: 60px;
  }

  .shell-nav {
    padding: 20px 8px;
  }

  .shell-brand {
    padding: 0 4px 20px;
    justify-content: center;
  }

  .shell-brand .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  .shell-brand span:last-child {
    display: none;
  }

  .shell-nav .nav-item {
    justify-content: center;
    padding: 12px;
  }

  .shell-nav .nav-item .nav-label {
    display: none;
  }

  .shell-bottom {
    text-align: center;
  }

  .shell-login-btn span {
    display: none;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 767px) {
  .app-shell {
    display: block;
  }

  .shell-nav {
    display: none;
  }

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

  .mobile-header {
    display: flex;
  }

  .page-main {
    padding-top: 84px;
  }

  .container {
    padding: 0 20px;
  }

  .cat-hero {
    padding: 32px 24px;
    border-radius: 12px;
    min-height: 280px;
  }

  .cat-hero h1 {
    font-size: 30px;
  }

  .breadcrumb {
    font-size: 12px;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 4px;
  }

  .two-col {
    gap: 24px;
  }

  .service-list-item {
    flex-direction: row;
    padding: 20px;
  }

  .service-list-item .item-num {
    font-size: 22px;
    width: 36px;
  }

  .service-list-item .item-body h3 {
    font-size: 18px;
  }

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

  .flow-section {
    padding: 32px 20px;
  }

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

  .cta-section {
    padding: 40px 24px;
    border-radius: 12px;
  }

  .cta-section h2 {
    font-size: 24px;
  }

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

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

  .footer-col:last-child {
    grid-column: 1 / -1;
  }

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

@media (max-width: 520px) {
  .cat-hero {
    flex-direction: column;
    padding: 24px 20px;
  }

  .cat-hero .hero-ctas {
    flex-direction: column;
    width: 100%;
  }

  .cat-hero .hero-ctas .btn-primary,
  .cat-hero .hero-ctas .btn-outline {
    width: 100%;
  }

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

  .item-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  .side-card {
    padding: 20px;
  }

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

  .footer-col h4 {
    font-size: 14px;
  }
}

/* roulang page: article */
:root {
    --primary: #1A3C34;
    --primary-dark: #143029;
    --secondary-bg: #F5F1E8;
    --accent: #E07A3F;
    --accent-hover: #C9642F;
    --text-primary: #22261F;
    --text-body: #4A5248;
    --text-light: #9AA395;
    --border: #E3DECF;
    --card-bg: #FFFFFF;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 12px rgba(26,60,52,0.05);
    --shadow-md: 0 8px 30px rgba(26,60,52,0.1);
    --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --sidebar-width: 220px;
    --transition: 0.25s ease;
    --container-max: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-family);
    font-size: 15px;
    line-height: 1.75;
    color: var(--text-body);
    background: var(--secondary-bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0 24px; height: 44px; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 500; border: 1px solid transparent;
    transition: var(--transition); cursor: pointer; text-align: center;
}
.btn:focus { outline: none; box-shadow: 0 0 0 3px rgba(224,122,63,0.3); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-primary:active { transform: translateY(-1px); }
.btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-block { width: 100%; }

.app-shell { min-height: 100vh; }
.shell-sidebar {
    position: fixed; top: 0; left: 0; width: var(--sidebar-width);
    height: 100vh; background: var(--card-bg); border-right: 1px solid var(--border);
    display: flex; flex-direction: column; z-index: 100; transition: transform 0.3s ease;
}
.sidebar-inner { display: flex; flex-direction: column; height: 100%; padding: 24px 16px; }
.logo-area {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 12px; margin-bottom: 32px;
    font-size: 18px; font-weight: 600; color: var(--text-primary);
}
.logo-mark {
    width: 36px; height: 36px; background: var(--primary); color: #fff;
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    font-size: 17px; font-weight: 600; flex-shrink: 0;
}
.shell-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px; border-radius: 10px;
    font-size: 15px; font-weight: 400; color: var(--text-body);
    transition: var(--transition); position: relative;
}
.nav-item svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.nav-item:hover { background: var(--secondary-bg); color: var(--primary); }
.nav-item.active { color: var(--primary); font-weight: 600; background: rgba(26,60,52,0.04); }
.nav-item.active::before {
    content: ''; position: absolute; left: -16px; top: 50%; transform: translateY(-50%);
    width: 3px; height: 22px; background: var(--primary); border-radius: 0 3px 3px 0;
}
.sidebar-footer { padding-top: 16px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 12px; }
.sidebar-footer .copy { font-size: 12px; color: var(--text-light); text-align: center; line-height: 1.5; }

.main-content { margin-left: var(--sidebar-width); min-height: 100vh; display: flex; flex-direction: column; }
.mobile-header { display: none; }
.mobile-overlay { display: none; }

.article-page { max-width: var(--container-max); margin: 0 auto; padding: 0 40px; flex: 1; width: 100%; }

.breadcrumb { padding: 28px 0 8px; font-size: 13px; color: var(--text-light); display: flex; flex-wrap: wrap; align-items: center; gap: 0; }
.breadcrumb a { color: var(--text-light); transition: var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 10px; color: var(--border); }
.breadcrumb .current { color: var(--text-body); }

.article-header { padding: 32px 0 40px; max-width: 860px; }
.article-header h1 { font-size: 38px; font-weight: 600; line-height: 1.3; color: var(--text-primary); margin-bottom: 16px; word-break: break-word; }
.article-meta { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-light); flex-wrap: wrap; }
.accent-line { display: block; width: 40px; height: 4px; background: var(--accent); border-radius: 2px; margin-top: 20px; }

.article-content {
    max-width: 720px; margin: 0 auto 0 0; background: var(--card-bg);
    border-radius: var(--radius-md); border: 1px solid var(--border);
    padding: 48px; font-size: 16px; line-height: 1.8; color: var(--text-body);
}
.article-content h2 {
    font-size: 26px; font-weight: 600; color: var(--text-primary);
    margin: 40px 0 16px; padding-top: 16px; border-top: 1px solid var(--border);
}
.article-content h3 { font-size: 20px; font-weight: 600; color: var(--text-primary); margin: 32px 0 12px; }
.article-content p { margin-bottom: 20px; }
.article-content img { border-radius: var(--radius-md); margin: 24px 0; width: 100%; height: auto; }
.article-content blockquote {
    border-left: 4px solid var(--accent); background: var(--secondary-bg);
    padding: 16px 24px; margin: 24px 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-primary); font-style: normal;
}
.article-content ul, .article-content ol { margin: 0 0 20px 20px; }
.article-content li { margin-bottom: 8px; }
.article-content a { color: var(--accent); text-decoration: underline; }
.article-content a:hover { color: var(--accent-hover); }
.article-content code { background: var(--secondary-bg); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; color: var(--primary); }
.article-content pre { background: var(--text-primary); color: #e8e6df; padding: 20px 24px; border-radius: var(--radius-md); overflow-x: auto; margin: 24px 0; }
.article-content pre code { background: none; color: inherit; padding: 0; }
.article-content hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-content th, .article-content td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-content th { background: var(--secondary-bg); color: var(--text-primary); font-weight: 500; }

.not-found { text-align: center; padding: 80px 20px; }
.not-found p { font-size: 18px; color: var(--text-primary); margin-bottom: 16px; }
.not-found a { color: var(--accent); text-decoration: underline; font-size: 15px; }

.article-pagination { max-width: 720px; margin: 40px 0; display: flex; gap: 20px; }
.article-pagination a {
    flex: 1; padding: 20px 24px; background: var(--card-bg);
    border: 1px solid var(--border); border-radius: var(--radius-md);
    transition: var(--transition); display: flex; flex-direction: column; gap: 4px;
}
.article-pagination a:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.article-pagination .label { font-size: 12px; color: var(--text-light); }
.article-pagination .title { font-size: 15px; font-weight: 500; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.related-posts { max-width: var(--container-max); margin: 0 0 80px; }
.related-posts h2 { font-size: 28px; font-weight: 500; color: var(--text-primary); margin-bottom: 24px; position: relative; padding-bottom: 12px; }
.related-posts h2::after { content: ''; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; background: var(--accent); border-radius: 2px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md);
    overflow: hidden; transition: var(--transition); display: block;
}
.related-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.related-card .thumb { width: 100%; height: 180px; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .thumb { transform: scale(1.03); }
.related-card .card-body { padding: 16px 20px 8px; }
.related-card h3 { font-size: 17px; font-weight: 500; color: var(--text-primary); margin-bottom: 6px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.related-card time { display: block; padding: 0 20px 16px; font-size: 13px; color: var(--text-light); }

.site-footer {
    background: var(--primary); color: var(--secondary-bg);
    padding: 64px 0 0; margin-top: 80px;
}
.site-footer .container { max-width: var(--container-max); margin: 0 auto; padding: 0 40px; }
.footer-top { display: flex; gap: 60px; padding-bottom: 48px; border-bottom: 1px solid rgba(245,241,232,0.15); }
.footer-brand { flex: 0 0 280px; }
.footer-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 600; color: #fff; margin-bottom: 12px; }
.footer-logo .logo-mark { background: var(--accent); }
.footer-brand p { font-size: 14px; color: rgba(245,241,232,0.7); line-height: 1.7; }
.footer-links { flex: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col h4 { font-size: 15px; font-weight: 500; color: #fff; margin-bottom: 16px; }
.footer-col a, .footer-col p { display: block; font-size: 14px; color: rgba(245,241,232,0.7); margin-bottom: 10px; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { padding: 24px 0; font-size: 13px; color: rgba(245,241,232,0.5); text-align: center; }

@media (max-width: 991px) {
    :root { --sidebar-width: 60px; }
    .shell-sidebar { width: 60px; }
    .sidebar-inner { padding: 16px 10px; }
    .logo-area { padding: 8px 0; justify-content: center; }
    .logo-area .logo-text, .nav-item .nav-label, .sidebar-footer .btn .btn-text { display: none; }
    .nav-item { justify-content: center; padding: 12px 0; }
    .nav-item.active::before { left: -10px; }
    .sidebar-footer .copy { font-size: 10px; }
}

@media (max-width: 767px) {
    :root { --sidebar-width: 0px; }
    .shell-sidebar { transform: translateX(-100%); width: 240px; box-shadow: var(--shadow-md); }
    .shell-sidebar.open { transform: translateX(0); }
    .sidebar-inner { padding: 24px 16px; }
    .logo-area { justify-content: flex-start; padding: 8px 12px; }
    .logo-area .logo-text, .nav-item .nav-label, .sidebar-footer .btn .btn-text { display: inline; }
    .nav-item { justify-content: flex-start; padding: 12px 14px; }
    .nav-item.active::before { left: -16px; }
    .mobile-header {
        display: flex; align-items: center; justify-content: space-between;
        height: 60px; padding: 0 20px; background: var(--card-bg);
        border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 200;
    }
    .mobile-logo { font-size: 17px; font-weight: 600; color: var(--text-primary); display: flex; align-items: center; gap: 8px; }
    .hamburger {
        background: none; border: none; width: 40px; height: 40px;
        display: flex; align-items: center; justify-content: center; border-radius: 8px;
    }
    .hamburger svg { width: 22px; height: 22px; stroke: var(--text-primary); }
    .mobile-overlay.open { display: block; position: fixed; inset: 0; background: rgba(26,60,52,0.5); z-index: 150; }
    .main-content { margin-left: 0; }
    .article-page { padding: 0 20px; }
    .breadcrumb { padding: 20px 0 4px; }
    .article-header { padding: 20px 0 28px; }
    .article-header h1 { font-size: 30px; line-height: 1.4; }
    .article-content { padding: 24px; border-radius: var(--radius-sm); }
    .article-content h2 { font-size: 22px; }
    .article-pagination { flex-direction: column; gap: 12px; }
    .related-grid { grid-template-columns: 1fr; gap: 16px; }
    .related-posts { margin-bottom: 48px; }
    .site-footer { padding-top: 40px; margin-top: 48px; }
    .site-footer .container { padding: 0 20px; }
    .footer-top { flex-direction: column; gap: 32px; padding-bottom: 32px; }
    .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
}

/* roulang page: category2 */
:root {
  --primary: #1A3C34;
  --primary-dark: #122B25;
  --primary-light: #2B5A4E;
  --secondary: #F5F1E8;
  --accent: #E07A3F;
  --accent-hover: #C9642F;
  --text: #22261F;
  --text-body: #4A5248;
  --text-muted: #9AA395;
  --border: #E3DECF;
  --card-bg: #FFFFFF;
  --white: #FFFFFF;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 12px rgba(26, 60, 52, 0.05);
  --shadow-hover: 0 8px 30px rgba(26, 60, 52, 0.1);
  --transition: 0.25s ease;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --sidebar-width: 220px;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--secondary);
  color: var(--text);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.7);
}
.btn-outline-light:hover {
  background: var(--white);
  color: var(--primary);
}
.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(224, 122, 63, 0.3);
}
.btn-block {
  width: 100%;
}

/* ===== Header / App Shell ===== */
.site-header {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--white);
  border-right: 1px solid var(--border);
  z-index: 1000;
}
.header-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 24px 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  margin-bottom: 32px;
  border-radius: 10px;
  transition: var(--transition);
}
.logo:hover {
  background: var(--secondary);
}
.logo-mark {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--white);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  flex-shrink: 0;
}
.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.shell-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  color: var(--text-body);
  border-left: 3px solid transparent;
  transition: var(--transition);
  line-height: 1.4;
}
.nav-item svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.nav-item:hover {
  color: var(--primary);
  background: var(--secondary);
}
.nav-item.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(26, 60, 52, 0.04);
  border-left-color: var(--primary);
}
.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.copyright {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 16px;
  line-height: 1.6;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  border-radius: 6px;
  transition: var(--transition);
}
.menu-toggle:hover {
  background: var(--secondary);
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.drawer-overlay {
  display: none;
}

/* ===== Main ===== */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

/* ===== Category Banner ===== */
.category-banner {
  background: linear-gradient(to bottom, rgba(245, 241, 232, 0.88), #F5F1E8 85%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a {
  color: var(--text-muted);
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .breadcrumb-current {
  color: var(--text-body);
}
.category-banner h1 {
  font-size: 38px;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 12px;
  color: var(--text);
  letter-spacing: 0.01em;
}
.category-banner .category-desc {
  font-size: 14px;
  color: var(--text-body);
  max-width: 720px;
  line-height: 1.8;
}

/* ===== Platform Section ===== */
.platform-section {
  padding: 48px 0 0;
}
.platform-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.platform-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.platform-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.platform-icon {
  width: 48px;
  height: 48px;
  background: var(--secondary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.platform-card h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}
.platform-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}
.text-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  position: relative;
  padding-bottom: 2px;
  display: inline-block;
}
.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.text-link:hover::after {
  transform: scaleX(1);
}

/* ===== Category Layout ===== */
.category-content {
  padding: 48px 0 80px;
}
.category-layout {
  display: grid;
  grid-template-columns: 64fr 36fr;
  gap: 32px;
  align-items: start;
}
.content-main {
  min-width: 0;
}
.section-head {
  margin-bottom: 24px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
  line-height: 1.3;
}
.section-head p {
  font-size: 14px;
  color: var(--text-body);
}
.content-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.list-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: var(--transition);
}
.list-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.list-thumb {
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--secondary);
}
.list-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.list-card:hover .list-thumb img {
  transform: scale(1.03);
}
.list-body {
  flex: 1;
  min-width: 0;
}
.list-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.badge {
  display: inline-block;
  background: var(--secondary);
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}
.list-meta .date,
.list-meta .reads {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}
.list-body h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 6px;
  line-height: 1.4;
}
.list-body h3 a {
  color: var(--text);
  transition: var(--transition);
}
.list-body h3 a:hover {
  color: var(--primary);
}
.list-body p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Sidebar ===== */
.content-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 24px;
}
.side-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}
.side-card:hover {
  border-color: rgba(26, 60, 52, 0.3);
}
.side-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 14px;
  position: relative;
  padding-bottom: 10px;
  color: var(--text);
}
.side-card h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.side-card p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}
.side-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.side-card ul a {
  font-size: 14px;
  color: var(--text-body);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  line-height: 1.5;
}
.side-card ul a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.side-card ul a:hover {
  color: var(--primary);
  padding-left: 2px;
}
.profile-card {
  text-align: center;
}
.profile-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 12px;
  font-weight: 600;
}
.profile-card h3 {
  text-align: center;
}
.profile-card h3::after {
  left: 50%;
  transform: translateX(-50%);
}
.profile-card p {
  text-align: center;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 60px 0;
  background: var(--secondary);
  border-top: 1px solid var(--border);
}
.faq-section .section-head {
  text-align: center;
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.faq-item:last-child {
  border-bottom: 1px solid var(--border);
}
.faq-item h3 {
  font-size: 16px;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text);
  line-height: 1.5;
}
.faq-item h3:hover {
  color: var(--primary);
}
.faq-icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--text-body);
  border-radius: 1px;
  transition: var(--transition);
}
.faq-icon::before {
  width: 14px;
  height: 2px;
  top: 9px;
  left: 3px;
}
.faq-icon::after {
  width: 2px;
  height: 14px;
  top: 3px;
  left: 9px;
}
.faq-item.open h3 .faq-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}
.faq-item.open h3 {
  color: var(--primary);
}
.faq-answer {
  display: none;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  padding-top: 14px;
}
.faq-item.open .faq-answer {
  display: block;
}

/* ===== CTA Section ===== */
.cta-section {
  background: var(--primary);
  color: var(--white);
  padding: 64px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -10%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 500;
  margin-bottom: 12px;
  line-height: 1.3;
  position: relative;
}
.cta-section p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 28px;
  position: relative;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 32px;
}
.site-footer .container {
  max-width: 1200px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
}
.footer-logo .logo-mark {
  width: 36px;
  height: 36px;
  font-size: 17px;
  background: rgba(255, 255, 255, 0.1);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 260px;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.footer-col a,
.footer-col p {
  display: block;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.9;
  transition: var(--transition);
  word-break: break-all;
}
.footer-col a:hover {
  color: var(--white);
  padding-left: 2px;
}
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== Responsive ===== */
@media (min-width: 768px) and (max-width: 991px) {
  .site-header {
    width: 60px;
  }
  .header-inner {
    padding: 20px 8px;
  }
  .logo {
    justify-content: center;
    padding: 8px 0;
    margin-bottom: 24px;
  }
  .logo-text,
  .nav-label,
  .sidebar-footer .copyright {
    display: none;
  }
  .nav-item {
    justify-content: center;
    padding: 14px 0;
    border-left: none;
  }
  .nav-item.active {
    border-left: none;
    background: rgba(26, 60, 52, 0.06);
  }
  .sidebar-footer .btn-block {
    padding: 8px 0;
    font-size: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 0 auto;
  }
  .sidebar-footer .btn-block::before {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 50%;
    display: block;
  }
  .main-wrapper {
    margin-left: 60px;
  }
  .category-layout {
    grid-template-columns: 1fr;
  }
  .content-side {
    position: static;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}
@media (max-width: 767px) {
  .site-header {
    width: 100%;
    height: 60px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: 60px;
  }
  .logo {
    margin: 0;
    padding: 0;
  }
  .menu-toggle {
    display: flex;
  }
  .shell-nav {
    position: fixed;
    top: 60px;
    left: 0;
    width: 280px;
    height: calc(100vh - 60px);
    background: var(--white);
    border-right: 1px solid var(--border);
    padding: 20px 16px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    display: flex;
    flex-direction: column;
  }
  body.drawer-open .shell-nav {
    transform: translateX(0);
  }
  body.drawer-open .drawer-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 998;
  }
  .sidebar-footer {
    display: none;
  }
  .main-wrapper {
    margin-left: 0;
  }
  .category-banner {
    padding: 40px 0 32px;
  }
  .category-banner h1 {
    font-size: 32px;
  }
  .platform-cards {
    grid-template-columns: 1fr;
  }
  .category-layout {
    grid-template-columns: 1fr;
  }
  .content-side {
    position: static;
    display: flex;
    flex-direction: column;
  }
  .category-content {
    padding: 32px 0 48px;
  }
  .list-card {
    flex-direction: column;
    gap: 12px;
  }
  .list-thumb {
    width: 100%;
    height: 160px;
  }
  .faq-section,
  .cta-section {
    padding: 48px 0;
  }
  .cta-section h2 {
    font-size: 26px;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
    padding: 0 24px;
  }
  .cta-buttons .btn {
    width: 100%;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 400px) {
  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .container {
    padding: 0 16px;
  }
  .platform-card {
    padding: 20px;
  }
  .list-meta {
    gap: 8px;
  }
}

/* roulang page: category3 */
:root {
      --primary: #1A3C34;
      --primary-dark: #12302A;
      --bg: #F5F1E8;
      --accent: #E07A3F;
      --accent-hover: #C9642F;
      --text-dark: #22261F;
      --text-body: #4A5248;
      --text-light: #7A8176;
      --border: #E3DECF;
      --card: #FFFFFF;
      --radius: 12px;
      --radius-lg: 16px;
      --radius-btn: 6px;
      --shadow: 0 2px 12px rgba(26, 60, 52, 0.05);
      --shadow-hover: 0 8px 30px rgba(26, 60, 52, 0.1);
      --transition: 0.25s ease;
      --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --shell-w: 220px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font);
      background: var(--bg);
      color: var(--text-body);
      line-height: 1.75;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    ul {
      list-style: none;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== 左侧导航 ===== */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: #fff;
      border-bottom: 1px solid var(--border);
      z-index: 200;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
    }

    .mobile-topbar .mobile-logo {
      font-weight: 600;
      font-size: 17px;
      color: var(--primary);
    }

    .menu-toggle {
      background: none;
      border: none;
      font-size: 22px;
      color: var(--primary);
      cursor: pointer;
      padding: 6px;
      width: 42px;
      height: 42px;
      border-radius: 8px;
    }

    .menu-toggle:hover {
      background: var(--bg);
    }

    .nav-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(18, 48, 42, 0.4);
      z-index: 400;
      opacity: 0;
      pointer-events: none;
      transition: opacity var(--transition);
    }

    .nav-overlay.show {
      opacity: 1;
      pointer-events: auto;
    }

    .app-shell {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--shell-w);
      background: var(--card);
      border-right: 1px solid var(--border);
      z-index: 300;
      display: flex;
      flex-direction: column;
      padding: 24px 0 20px;
      transition: transform 0.3s ease;
    }

    .shell-header {
      padding: 0 24px 28px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 18px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 600;
      color: var(--text-dark);
    }

    .logo-mark {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      font-size: 17px;
      font-weight: 700;
      flex-shrink: 0;
    }

    .logo-text {
      font-size: 16px;
      white-space: nowrap;
    }

    .shell-nav {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 2px;
      padding: 0 12px;
    }

    .nav-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 12px;
      border-radius: 8px;
      font-size: 15px;
      color: var(--text-body);
      position: relative;
      transition: all var(--transition);
    }

    .nav-item svg {
      width: 20px;
      height: 20px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
      flex-shrink: 0;
    }

    .nav-item:hover {
      background: var(--bg);
      color: var(--primary);
    }

    .nav-item.active {
      background: var(--bg);
      color: var(--primary);
      font-weight: 600;
    }

    .nav-item.active::before {
      content: "";
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 20px;
      background: var(--primary);
      border-radius: 2px;
    }

    .shell-footer {
      padding: 14px 24px 0;
      border-top: 1px solid var(--border);
      margin-top: 16px;
    }

    .shell-footer .mini-login {
      display: inline-block;
      padding: 8px 16px;
      background: var(--primary);
      color: #fff;
      border-radius: 6px;
      font-size: 14px;
      margin-bottom: 10px;
      transition: all var(--transition);
    }

    .shell-footer .mini-login:hover {
      background: var(--primary-dark);
      color: #fff;
    }

    .shell-footer p {
      font-size: 12px;
      color: var(--text-light);
    }

    .page-main {
      margin-left: var(--shell-w);
      min-height: 100vh;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      background: linear-gradient(120deg, rgba(245, 241, 232, 0.92) 0%, rgba(245, 241, 232, 0.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      padding: 96px 0 88px;
      border-bottom: 1px solid var(--border);
    }

    .page-hero .container {
      display: flex;
      justify-content: center;
    }

    .page-hero-inner {
      max-width: 720px;
      text-align: center;
    }

    .hero-badge {
      display: inline-block;
      background: rgba(224, 122, 63, 0.14);
      color: var(--accent);
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 0.04em;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 20px;
    }

    .page-hero h1 {
      font-size: 44px;
      line-height: 1.2;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 18px;
      letter-spacing: 0.01em;
    }

    .hero-underline {
      width: 40px;
      height: 4px;
      background: var(--accent);
      border-radius: 2px;
      margin: 0 auto 20px;
    }

    .page-hero .hero-desc {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-body);
      max-width: 580px;
      margin: 0 auto 32px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0 28px;
      height: 48px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 500;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all var(--transition);
      text-decoration: none;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }

    .btn-primary:hover {
      background: var(--accent-hover);
      border-color: var(--accent-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(224, 122, 63, 0.25);
    }

    .btn-primary:active {
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
    }

    .btn:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px rgba(224, 122, 63, 0.3);
    }

    .btn-light {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.65);
    }

    .btn-light:hover {
      background: rgba(255, 255, 255, 0.28);
      color: #fff;
      border-color: #fff;
    }

    /* ===== 分类主体两栏 ===== */
    .category-main {
      padding: 88px 0 60px;
    }

    .category-layout {
      display: grid;
      grid-template-columns: minmax(0, 64%) minmax(0, 36%);
      gap: 56px;
    }

    .section-head {
      margin-bottom: 32px;
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 16px;
    }

    .section-head h2 {
      font-size: 34px;
      font-weight: 500;
      line-height: 1.3;
      color: var(--text-dark);
      letter-spacing: 0.01em;
    }

    .section-link {
      font-size: 14px;
      color: var(--text-body);
      border-bottom: 2px solid transparent;
      padding-bottom: 2px;
      transition: all var(--transition);
      white-space: nowrap;
    }

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

    .badge {
      display: inline-block;
      font-size: 12px;
      letter-spacing: 0.04em;
      color: var(--primary);
      background: rgba(26, 60, 52, 0.08);
      border: 1px solid rgba(26, 60, 52, 0.12);
      border-radius: 4px;
      padding: 3px 10px;
      margin-bottom: 10px;
    }

    .badge-amber {
      background: rgba(224, 122, 63, 0.12);
      color: var(--accent);
      border-color: rgba(224, 122, 63, 0.18);
    }

    /* 内容列表卡 */
    .list-card {
      display: flex;
      gap: 20px;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 20px;
      margin-bottom: 20px;
      transition: all var(--transition);
    }

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

    .list-thumb {
      width: 120px;
      height: 80px;
      border-radius: 8px;
      overflow: hidden;
      flex-shrink: 0;
      background: var(--bg);
    }

    .list-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .list-card:hover .list-thumb img {
      transform: scale(1.03);
    }

    .list-body {
      flex: 1;
      min-width: 0;
    }

    .list-body h3 {
      font-size: 18px;
      font-weight: 500;
      color: var(--text-dark);
      margin: 6px 0 8px;
      line-height: 1.4;
      transition: color var(--transition);
    }

    .list-card:hover .list-body h3 {
      color: var(--primary);
    }

    .list-body p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 8px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .list-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: var(--text-light);
    }

    /* 侧边栏 */
    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .side-card {
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      transition: box-shadow var(--transition);
    }

    .side-card:hover {
      box-shadow: var(--shadow-hover);
    }

    .side-card h3 {
      font-size: 20px;
      font-weight: 500;
      color: var(--text-dark);
      margin-bottom: 14px;
      position: relative;
      padding-bottom: 12px;
    }

    .side-card h3::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 3px;
      background: var(--accent);
      border-radius: 2px;
    }

    .side-card p {
      font-size: 14px;
      line-height: 1.75;
      color: var(--text-body);
      margin-bottom: 12px;
    }

    .side-links li {
      margin-bottom: 4px;
    }

    .side-links a {
      display: block;
      padding: 9px 4px;
      font-size: 14px;
      color: var(--text-body);
      border-bottom: 1px dashed var(--border);
      transition: all var(--transition);
    }

    .side-links a:hover {
      color: var(--primary);
      padding-left: 10px;
      border-bottom-color: var(--accent);
    }

    .side-card-featured {
      text-align: center;
      padding: 0;
      overflow: hidden;
    }

    .side-card-featured .featured-img {
      height: 120px;
      width: 100%;
      object-fit: cover;
      border-radius: var(--radius) var(--radius) 0 0;
    }

    .side-card-featured .featured-body {
      padding: 24px 24px 28px;
    }

    .side-card-featured .featured-body h3 {
      font-size: 18px;
      text-align: left;
      padding-bottom: 0;
      margin-bottom: 8px;
    }

    .side-card-featured .featured-body h3::after {
      display: none;
    }

    .side-card-featured .featured-body p {
      text-align: left;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 18px;
    }

    .btn-sm {
      height: 40px;
      padding: 0 24px;
      font-size: 14px;
    }

    /* ===== 数据特征区 ===== */
    .data-band {
      background: var(--primary);
      padding: 72px 0;
      position: relative;
      overflow: hidden;
    }

    .data-band::before {
      content: "";
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      opacity: 0.14;
    }

    .data-band .container {
      position: relative;
      z-index: 1;
    }

    .band-head {
      text-align: center;
      margin-bottom: 48px;
    }

    .band-head .badge-amber {
      background: rgba(224, 122, 63, 0.35);
      color: #f5b98c;
      border-color: rgba(224, 122, 63, 0.4);
    }

    .band-head h2 {
      font-size: 34px;
      font-weight: 500;
      color: #fff;
      margin-top: 8px;
      letter-spacing: 0.02em;
    }

    .band-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
    }

    .band-item {
      padding: 12px 24px;
      text-align: center;
      border-left: 1px solid rgba(255, 255, 255, 0.16);
    }

    .band-item:first-child {
      border-left: none;
    }

    .band-num {
      font-size: 56px;
      font-weight: 700;
      color: #fff;
      line-height: 1.15;
      font-variant-numeric: tabular-nums;
      letter-spacing: 0.01em;
    }

    .band-attr {
      margin-top: 6px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.72);
      letter-spacing: 0.02em;
    }

    /* ===== 卖点特征 ===== */
    .features {
      padding: 88px 0;
      background: var(--card);
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }

    .feature-item {
      padding: 28px 24px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--bg);
      transition: all var(--transition);
    }

    .feature-item:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      background: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 20px;
      color: #fff;
    }

    .feature-item h3 {
      font-size: 18px;
      font-weight: 500;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .feature-item p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-body);
    }

    /* ===== 场景 ===== */
    .scenarios {
      padding: 88px 0;
      background: var(--bg);
    }

    .scenarios-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
      margin-top: 40px;
    }

    .scenario-card {
      display: flex;
      gap: 20px;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      transition: all var(--transition);
    }

    .scenario-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }

    .scenario-img {
      width: 140px;
      height: 100px;
      border-radius: 8px;
      overflow: hidden;
      flex-shrink: 0;
    }

    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .scenario-card:hover .scenario-img img {
      transform: scale(1.03);
    }

    .scenario-body h3 {
      font-size: 18px;
      font-weight: 500;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .scenario-body p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--text-body);
    }

    /* ===== 流程 ===== */
    .process {
      padding: 88px 0;
      background: var(--card);
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      margin-top: 48px;
      position: relative;
    }

    .process-steps::before {
      content: "";
      position: absolute;
      top: 28px;
      left: 8%;
      right: 8%;
      height: 1px;
      background: var(--border);
      z-index: 0;
    }

    .step-item {
      text-align: center;
      position: relative;
      z-index: 1;
    }

    .step-num {
      width: 56px;
      height: 56px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 600;
      margin: 0 auto 16px;
      border: 3px solid var(--bg);
      box-shadow: 0 0 0 1px var(--border);
    }

    .step-item h3 {
      font-size: 16px;
      font-weight: 500;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .step-item p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 88px 0;
      background: var(--bg);
    }

    .faq-list {
      max-width: 860px;
      margin: 40px auto 0;
    }

    .faq-item {
      border-bottom: 1px solid var(--border);
      padding: 20px 4px;
    }

    .faq-item:first-child {
      border-top: 1px solid var(--border);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      font-size: 16px;
      font-weight: 500;
      color: var(--text-dark);
      cursor: pointer;
      transition: color var(--transition);
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      position: relative;
      flex-shrink: 0;
    }

    .faq-icon::before,
    .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--primary);
      border-radius: 2px;
      transition: all 0.3s ease;
    }

    .faq-icon::before {
      width: 14px;
      height: 2px;
      top: 11px;
      left: 5px;
    }

    .faq-icon::after {
      width: 2px;
      height: 14px;
      top: 5px;
      left: 11px;
    }

    .faq-item.open .faq-icon::after {
      transform: rotate(90deg);
      opacity: 0;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-body);
    }

    .faq-item.open .faq-answer {
      max-height: 400px;
      padding-top: 14px;
    }

    /* ===== CTA/联系 ===== */
    .cta-section {
      background: var(--primary);
      padding: 80px 0;
      color: #fff;
    }

    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: start;
    }

    .cta-title {
      font-size: 34px;
      font-weight: 500;
      line-height: 1.3;
      color: #fff;
      margin-bottom: 16px;
    }

    .cta-sub {
      font-size: 15px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.8);
      margin-bottom: 32px;
    }

    .contact-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 28px;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 15px;
      color: rgba(255, 255, 255, 0.88);
    }

    .contact-item .icon {
      width: 20px;
      text-align: center;
      flex-shrink: 0;
      margin-top: 3px;
    }

    .cta-form {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 16px;
      padding: 28px;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.75);
      margin-bottom: 6px;
    }

    .form-input,
    .form-textarea {
      width: 100%;
      height: 44px;
      background: rgba(255, 255, 255, 0.94);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 8px;
      padding: 0 14px;
      font-size: 14px;
      color: var(--text-dark);
      font-family: var(--font);
      transition: all var(--transition);
    }

    .form-input:focus,
    .form-textarea:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(224, 122, 63, 0.25);
    }

    .form-textarea {
      height: 96px;
      padding-top: 10px;
      resize: vertical;
    }

    .btn-block {
      width: 100%;
      height: 48px;
      font-size: 15px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #0f2a24;
      color: rgba(255, 255, 255, 0.82);
      padding: 64px 0 32px;
    }

    .footer-top {
      display: flex;
      justify-content: space-between;
      gap: 48px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .footer-brand {
      max-width: 300px;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.68);
      line-height: 1.7;
    }

    .footer-links {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 40px;
      flex: 1;
      max-width: 640px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 500;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.66);
      margin-bottom: 10px;
      padding-left: 0;
      transition: all var(--transition);
    }

    .footer-col a:hover {
      color: #fff;
      padding-left: 4px;
    }

    .footer-col p {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.66);
      margin-bottom: 8px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 24px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.42);
      text-align: center;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1199px) {
      .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .process-steps {
        grid-template-columns: repeat(3, 1fr);
        gap: 32px 16px;
      }
      .process-steps::before {
        display: none;
      }
    }

    @media (min-width: 992px) {
      .page-main {
        margin-left: var(--shell-w);
      }
    }

    @media (max-width: 991px) {
      :root {
        --shell-w: 60px;
      }
      .app-shell {
        width: var(--shell-w);
        padding: 16px 0;
      }
      .shell-header {
        padding: 0 10px 20px;
        text-align: center;
      }
      .brand-logo {
        justify-content: center;
      }
      .logo-text,
      .nav-label {
        display: none;
      }
      .nav-item {
        justify-content: center;
        padding: 14px 0;
      }
      .nav-item svg {
        width: 22px;
        height: 22px;
      }
      .shell-footer {
        padding: 14px 10px 0;
        text-align: center;
      }
      .shell-footer .mini-login {
        font-size: 0;
        padding: 12px;
        width: 38px;
        height: 38px;
        border-radius: 50%;
        line-height: 1;
      }
      .shell-footer .mini-login::before {
        content: "→";
        font-size: 16px;
      }
      .category-layout {
        grid-template-columns: 1fr;
        gap: 48px;
      }
      .band-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .band-item {
        border-left: none;
      }
      .band-num {
        font-size: 42px;
      }
      .scenarios-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 767px) {
      body {
        padding-top: 60px;
      }
      .mobile-topbar {
        display: flex;
      }
      .app-shell {
        transform: translateX(-100%);
        width: 260px;
        box-shadow: 4px 0 30px rgba(0, 0, 0, 0.12);
      }
      .app-shell.open {
        transform: translateX(0);
      }
      .app-shell .shell-header {
        padding: 0 24px 20px;
        text-align: left;
      }
      .app-shell .brand-logo {
        justify-content: flex-start;
      }
      .app-shell .logo-text {
        display: inline;
      }
      .app-shell .nav-item {
        justify-content: flex-start;
        padding: 12px;
      }
      .app-shell .nav-label {
        display: inline;
      }
      .app-shell .nav-item.active::before {
        left: 0;
      }
      .nav-overlay {
        display: block;
      }
      .page-main {
        margin-left: 0;
      }
      .page-hero {
        padding: 56px 0 56px;
      }
      .page-hero h1 {
        font-size: 34px;
        line-height: 1.25;
      }
      .page-hero .hero-desc {
        font-size: 15px;
      }
      .hero-actions {
        flex-direction: column;
        align-items: center;
      }
      .btn {
        width: 100%;
        max-width: 280px;
      }
      .category-main {
        padding: 48px 0 40px;
      }
      .section-head {
        flex-direction: column;
        align-items: flex-start;
      }
      .section-head h2 {
        font-size: 28px;
      }
      .list-card {
        flex-direction: column;
        padding: 16px;
      }
      .list-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 3/2;
      }
      .features {
        padding: 48px 0;
      }
      .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      .scenarios {
        padding: 48px 0;
      }
      .scenario-card {
        flex-direction: column;
        padding: 16px;
      }
      .scenario-img {
        width: 100%;
        height: auto;
        aspect-ratio: 16/10;
      }
      .process {
        padding: 48px 0;
      }
      .process-steps {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .faq-section {
        padding: 48px 0;
      }
      .faq-question {
        font-size: 15px;
      }
      .cta-section {
        padding: 48px 0;
      }
      .cta-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .site-footer {
        padding: 48px 0 24px;
      }
      .footer-top {
        flex-direction: column;
        gap: 32px;
      }
      .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        max-width: 100%;
      }
      .band-num {
        font-size: 36px;
      }
    }