/* roulang page: index */
:root {
  --primary: #2C6FBB;
  --primary-light: #4A8BD4;
  --primary-dark: #1E4F86;
  --primary-bg: #EAF1F8;
  --accent: #C99A2E;
  --accent-light: #E8B44F;
  --dark: #123A66;
  --bg: #F6F9FC;
  --white: #FFFFFF;
  --border: #E3EAF2;
  --text: #1F2D3D;
  --text-weak: #5A6B7F;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(18, 58, 102, 0.08);
  --shadow-hover: 0 10px 32px rgba(18, 58, 102, 0.14);
  --max-width: 1200px;
  --section-space: 96px;
  --section-space-mobile: 56px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 18px rgba(18, 58, 102, 0.08);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-shrink: 0;
}
.logo-text {
  font-size: 24px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.logo-text .dot {
  color: var(--accent);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}
.main-nav a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}
.main-nav a.active {
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.city-selector {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  cursor: pointer;
  transition: border-color 0.2s;
}
.city-selector:hover {
  border-color: var(--primary);
}
.city-selector .pin-icon {
  width: 14px;
  height: 14px;
  display: inline-block;
  background: var(--primary);
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  position: relative;
}
.city-selector .pin-icon::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
}
.city-selector .arrow {
  font-size: 12px;
  color: var(--text-weak);
  margin-left: 4px;
}
.city-dropdown {
  position: absolute;
  top: 44px;
  right: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
  min-width: 180px;
  display: none;
  z-index: 50;
}
.city-dropdown.open {
  display: block;
}
.city-dropdown a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
}
.city-dropdown a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}
.header-city-bar {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.header-city-bar::-webkit-scrollbar {
  display: none;
}
.city-chip {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-weak);
  background: var(--bg);
  border: 1px solid transparent;
  transition: all 0.2s;
}
.city-chip:hover {
  background: var(--primary-bg);
  color: var(--primary);
  border-color: var(--primary);
}
.city-chip.active {
  background: var(--primary);
  color: #fff;
  font-weight: 500;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--primary-bg);
  color: var(--primary);
}

.hero {
  background: linear-gradient(180deg, #EDF3FA 0%, var(--bg) 100%);
  padding: 64px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(44, 111, 187, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-content {
  padding: 20px 0;
}
.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.hero-tagline::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.hero-content h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.hero-content h1 span {
  color: var(--primary);
}
.hero-desc {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(44, 111, 187, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(44, 111, 187, 0.4);
  transform: translateY(-1px);
}
.btn-outline {
  background: var(--white);
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-bg);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #b8891f;
  box-shadow: 0 6px 20px rgba(201, 154, 46, 0.35);
  transform: translateY(-1px);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn:active {
  transform: scale(0.97);
}
.hero-metrics {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-metrics-item {
  display: flex;
  flex-direction: column;
}
.hero-metrics-item .num {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  font-family: "Inter", "DIN Alternate", "Bahnschrift", sans-serif;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.hero-metrics-item .label {
  font-size: 13px;
  color: var(--text-weak);
  margin-top: 2px;
}
.hero-visual {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.hero-visual img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(18, 58, 102, 0.1) 0%, rgba(18, 58, 102, 0.4) 100%);
}
.hero-visual-inner {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.hero-visual-inner .info {
  display: flex;
  flex-direction: column;
}
.hero-visual-inner .info .title {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
}
.hero-visual-inner .info .sub {
  font-size: 13px;
  color: var(--text-weak);
}
.hero-visual-inner .play-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(44, 111, 187, 0.4);
}
.hero-visual-inner .play-btn::before {
  content: "";
  width: 0;
  height: 0;
  border-left: 12px solid #fff;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  margin-left: 3px;
}

.section {
  padding: var(--section-space) 0;
}
.section-header {
  max-width: 640px;
  margin-bottom: 48px;
}
.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-header .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-bg);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.section-header p {
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.7;
}

.metrics {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.metric-card {
  padding: 24px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all 0.25s;
  text-align: center;
}
.metric-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.metric-card .number {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  font-family: "Inter", "DIN Alternate", "Bahnschrift", sans-serif;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.metric-card .number .unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-weak);
  margin-left: 2px;
}
.metric-card .label {
  font-size: 14px;
  color: var(--text);
  margin-top: 8px;
}
.metric-card .trend {
  font-size: 12px;
  color: var(--accent);
  margin-top: 4px;
  font-weight: 500;
}

.portrait {
  background: var(--bg);
}
.portrait-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.portrait-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.portrait-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.portrait-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
}
.portrait-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.portrait-card:hover .portrait-media img {
  transform: scale(1.03);
}
.portrait-media .badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}
.portrait-body {
  padding: 20px;
}
.portrait-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}
.portrait-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
}

.services {
  background: var(--white);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: all 0.3s;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--primary);
  transition: height 0.3s;
}
.service-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.service-card:hover::before {
  height: 100%;
}
.service-card .num {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  font-family: "Inter", "DIN Alternate", sans-serif;
}
.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--dark);
  margin: 12px 0 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
  margin-bottom: 16px;
}
.service-card .service-points {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}
.service-points .point {
  font-size: 12px;
  background: var(--primary-bg);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 500;
}
.service-card .service-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}
.service-card .service-link:hover {
  gap: 8px;
}
.service-card.wide {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: linear-gradient(135deg, var(--dark) 0%, #1E4F86 100%);
  border-color: transparent;
}
.service-card.wide::before {
  background: var(--accent);
}
.service-card.wide h3 {
  color: #fff;
}
.service-card.wide p {
  color: rgba(255, 255, 255, 0.8);
}
.service-card.wide .service-points .point {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}
.service-card.wide .service-link {
  color: var(--accent-light);
}

.compare {
  background: var(--bg);
}
.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.compare-col {
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}
.compare-col.night {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.compare-col.regular {
  background: #F1F4F7;
  border-color: #E0E6EC;
}
.compare-col h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.compare-col.night h3 {
  color: var(--primary);
}
.compare-col.regular h3 {
  color: var(--text-weak);
}
.compare-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}
.compare-item:last-child {
  border-bottom: none;
}
.compare-item .dimension {
  font-size: 14px;
  color: var(--text);
}
.compare-item .value {
  font-size: 14px;
  font-weight: 600;
}
.compare-col.night .value {
  color: var(--primary);
}
.compare-col.regular .value {
  color: var(--text-weak);
}
.compare-note {
  margin-top: 20px;
  text-align: center;
  padding: 16px;
  background: var(--primary-bg);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--dark);
}

.reviews {
  background: var(--white);
}
.review-layout {
  display: grid;
  grid-template-columns: 0.8fr 2.2fr;
  gap: 40px;
  align-items: center;
}
.review-summary {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
}
.review-summary .score {
  font-size: 52px;
  font-weight: 700;
  color: var(--dark);
  font-family: "Inter", "DIN Alternate", sans-serif;
  line-height: 1.1;
}
.review-summary .stars {
  font-size: 20px;
  color: var(--accent);
  margin: 8px 0;
  letter-spacing: 2px;
}
.review-summary .meta {
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 16px;
}
.review-summary .btn {
  width: 100%;
}
.review-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.review-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: box-shadow 0.25s, border-color 0.25s;
}
.review-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.review-card .review-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
}
.review-avatar.alt {
  background: var(--accent);
}
.review-avatar.alt2 {
  background: var(--dark);
}
.review-user {
  display: flex;
  flex-direction: column;
}
.review-user .name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.review-user .role {
  font-size: 12px;
  color: var(--text-weak);
}
.review-card .review-stars {
  color: var(--accent);
  font-size: 14px;
  margin-left: auto;
  letter-spacing: 1px;
}
.review-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}

.news {
  background: var(--bg);
}
.news-layout {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 40px;
}
.news-list {
  display: flex;
  flex-direction: column;
}
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: padding-left 0.2s;
}
.news-item:hover {
  padding-left: 8px;
}
.news-item .date {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  min-width: 56px;
}
.news-item .date .day {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  font-family: "Inter", "DIN Alternate", sans-serif;
}
.news-item .date .month {
  font-size: 11px;
  color: var(--text-weak);
  text-transform: uppercase;
}
.news-item .content h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.news-item .content p {
  font-size: 14px;
  color: var(--text-weak);
}
.news-side {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.news-side h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.side-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.side-list li:last-child {
  border-bottom: none;
}
.side-list a {
  font-size: 14px;
  color: var(--text);
  transition: color 0.2s;
  display: block;
}
.side-list a:hover {
  color: var(--primary);
}
.side-stats {
  margin-top: 24px;
  background: var(--primary-bg);
  border-radius: var(--radius);
  padding: 20px;
}
.side-stats .stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 14px;
}
.side-stats .stat-row .label {
  color: var(--text-weak);
}
.side-stats .stat-row .value {
  font-weight: 600;
  color: var(--primary);
  font-family: "Inter", "DIN Alternate", sans-serif;
}

.faq {
  background: var(--white);
}
.faq-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
}
.faq-left {
  position: sticky;
  top: 100px;
  align-self: flex-start;
}
.faq-left h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.3;
}
.faq-left p {
  font-size: 15px;
  color: var(--text-weak);
  margin-bottom: 24px;
}
.faq-left .contact-link {
  color: var(--primary);
  font-weight: 500;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: border-color 0.2s;
}
.faq-item:hover {
  border-color: var(--primary-light);
}
.faq-item.open {
  border-color: var(--primary);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  gap: 16px;
  transition: background 0.2s;
}
.faq-question:hover {
  background: var(--bg);
}
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: all 0.3s;
}
.faq-item.open .faq-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(135deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin: 0 24px 20px;
  padding-left: 0;
  padding-right: 0;
}

.cta-form {
  background: var(--dark);
  padding: var(--section-space) 0;
  position: relative;
  overflow: hidden;
}
.cta-form::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(74, 139, 212, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-form::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(201, 154, 46, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.cta-left {
  color: #fff;
}
.cta-left h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cta-left > p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-points {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}
.cta-point {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.cta-point .icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  color: var(--accent-light);
}
.cta-point span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}
.cta-contact {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-contact .contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}
.cta-contact .contact-item strong {
  color: #fff;
}
.form-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  padding: 32px;
}
.form-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.form-card .form-sub {
  font-size: 14px;
  color: var(--text-weak);
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid #D5E0EA;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group textarea {
  height: 80px;
  padding: 12px 14px;
  resize: vertical;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(44, 111, 187, 0.12);
}
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: #D9534F;
  box-shadow: 0 0 0 3px rgba(217, 83, 79, 0.1);
}
.form-error-msg {
  font-size: 12px;
  color: #D9534F;
  margin-top: 4px;
  display: none;
}
.form-group.has-error .form-error-msg {
  display: block;
}
.form-card .btn {
  width: 100%;
  height: 48px;
  margin-top: 8px;
}
.privacy-note {
  font-size: 12px;
  color: var(--text-weak);
  text-align: center;
  margin-top: 14px;
  line-height: 1.5;
}

.site-footer {
  background: #0E2B4F;
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .logo-text {
  color: #fff;
  margin-bottom: 16px;
  display: block;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 280px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s, opacity 0.2s;
}
.footer-col a:hover {
  color: var(--accent-light);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  transition: background 0.2s, transform 0.2s;
}
.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-content {
    text-align: center;
  }
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-metrics {
    justify-content: center;
  }
  .hero-visual img {
    height: 320px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .portrait-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-card.wide {
    grid-column: span 2;
  }
  .review-layout {
    grid-template-columns: 1fr;
  }
  .news-layout {
    grid-template-columns: 1fr;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .faq-left {
    position: static;
  }
  .cta-layout {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .header-city-bar {
    padding: 8px 0;
  }
  .city-selector {
    display: none;
  }
  .hero-content h1 {
    font-size: 30px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }
  .hero-visual img {
    height: 240px;
  }
  .section {
    padding: var(--section-space-mobile) 0;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .metric-card {
    padding: 16px;
  }
  .metric-card .number {
    font-size: 28px;
  }
  .portrait-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .services-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .service-card.wide {
    grid-column: span 1;
  }
  .compare-grid {
    grid-template-columns: 1fr;
  }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .news-item .date {
    flex-direction: row;
    align-items: baseline;
    gap: 6px;
  }
  .mobile-menu {
    padding: 12px 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .faq-question {
    font-size: 15px;
    padding: 16px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo-text {
    font-size: 20px;
  }
  .hero {
    padding: 40px 0 56px;
  }
  .hero-content h1 {
    font-size: 26px;
  }
  .hero-metrics {
    gap: 16px;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .form-card {
    padding: 24px;
  }
  .city-chip {
    padding: 3px 10px;
    font-size: 12px;
  }
}

/* roulang page: category1 */
/* ========== 设计变量 ========== */
:root {
  --primary: #2C6FBB;
  --primary-light: #4A8BD4;
  --primary-dark: #1E4F86;
  --primary-bg: #EAF1F8;
  --accent: #C99A2E;
  --accent-light: #E8B44F;
  --dark: #123A66;
  --bg: #F6F9FC;
  --white: #FFFFFF;
  --border: #E3EAF2;
  --text: #1F2D3D;
  --text-weak: #5A6B7F;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(18, 58, 102, 0.08);
  --shadow-hover: 0 10px 32px rgba(18, 58, 102, 0.14);
  --max-width: 1200px;
  --section-space: 96px;
  --section-space-mobile: 56px;
}

/* ========== Reset / Base ========== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
}
button {
  cursor: pointer;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}
ul, ol {
  list-style: none;
}

/* ========== 容器 / 通用 ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section-header {
  margin-bottom: 40px;
  max-width: 640px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.5px;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-weak);
  font-size: 16px;
  line-height: 1.7;
}
.section-header.light h2 {
  color: var(--dark);
}
.section-header.light p {
  color: var(--text-weak);
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  line-height: 1.4;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(44, 111, 187, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 22px rgba(44, 111, 187, 0.4);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(44, 111, 187, 0.3);
}
.btn-outline {
  background: var(--white);
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-bg);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: #b8891f;
  box-shadow: 0 6px 20px rgba(201, 154, 46, 0.35);
  transform: translateY(-2px);
}
.btn-block {
  width: 100%;
}

/* ========== 标签 / 徽章 ========== */
.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.6;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  box-shadow: 0 2px 8px rgba(201, 154, 46, 0.25);
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  background: #ffffff;
  box-shadow: 0 4px 18px rgba(18, 58, 102, 0.08);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-shrink: 0;
}
.logo-text {
  font-size: 24px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.logo-text .dot {
  color: var(--accent);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}
.main-nav a:hover {
  background: var(--primary-bg);
  color: var(--primary);
}
.main-nav a.active {
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 600;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.city-selector {
  font-size: 14px;
  color: var(--text);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--white);
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 4px;
}
.city-selector:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-bg);
}
.city-selector .arrow {
  font-size: 12px;
  color: var(--text-weak);
  margin-left: 2px;
}
.header-city-bar {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.header-city-bar::-webkit-scrollbar {
  display: none;
}
.city-chip {
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-weak);
  background: var(--bg);
  border: 1px solid transparent;
  transition: all 0.2s;
  display: inline-block;
}
.city-chip:hover {
  background: var(--primary-bg);
  color: var(--primary);
  border-color: var(--primary);
}
.city-chip.active {
  background: var(--primary);
  color: #fff;
  font-weight: 500;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--primary-bg);
  color: var(--primary);
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 20px 24px 0;
  font-size: 14px;
  color: var(--text-weak);
  max-width: var(--max-width);
  margin: 0 auto;
}
.breadcrumb a {
  color: var(--text-weak);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .current {
  color: var(--primary);
  font-weight: 500;
}
.breadcrumb span {
  margin: 0 4px;
}

/* ========== 子分类导航 ========== */
.subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 24px 0;
  max-width: var(--max-width);
  margin: 0 auto;
}
.subnav .chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 18px;
  border-radius: 30px;
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);
  transition: all 0.2s;
  font-weight: 500;
}
.subnav .chip:hover {
  background: var(--primary-bg);
  color: var(--primary);
  border-color: var(--primary);
}
.subnav .chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  font-weight: 600;
}

/* ========== 分类 Hero ========== */
.category-hero {
  padding: 48px 0 64px;
  background: linear-gradient(180deg, #EDF3FA 0%, var(--bg) 100%);
  position: relative;
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 30%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(44, 111, 187, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.category-hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.category-hero-content {
  padding: 10px 0;
}
.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.hero-tagline::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.category-hero-content h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
  letter-spacing: -1px;
  margin-bottom: 18px;
}
.category-hero-content h1 span {
  color: var(--primary);
}
.category-hero-content > p {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 540px;
}
.hero-stats {
  display: flex;
  gap: 28px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.hero-stats span {
  font-size: 14px;
  color: var(--text-weak);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stats strong {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
  font-family: "Inter", "DIN Alternate", "Bahnschrift", sans-serif;
  font-variant-numeric: tabular-nums;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.category-hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 3;
}
.category-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.category-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(18, 58, 102, 0.35) 100%);
  pointer-events: none;
}
.category-hero-media .play-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--dark);
  font-weight: 600;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ========== 内容混合网格 ========== */
.content-grid-section {
  padding: var(--section-space) 0;
}
.feature-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  margin-bottom: 32px;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}
.feature-card-media {
  position: relative;
  min-height: 280px;
}
.feature-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.feature-card-media .badge {
  position: absolute;
  top: 16px;
  left: 16px;
}
.feature-card-body {
  padding: 36px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.feature-card-body h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 14px;
  line-height: 1.3;
}
.feature-card-body p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.card-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.link-more {
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}
.link-more:hover {
  gap: 8px;
  color: var(--primary-dark);
}

/* ========== 标准卡片网格 ========== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.content-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}
.content-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.content-card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-tags {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.content-card-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.4;
}
.content-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  margin-bottom: 16px;
  flex: 1;
}
.content-card-body .card-meta {
  margin-bottom: 0;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* ========== 热门 TOP5 ========== */
.hot-section {
  padding: var(--section-space) 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}
.hot-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.hot-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  padding: 16px;
}
.hot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}
.hot-rank {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Inter", "DIN Alternate", "Bahnschrift", sans-serif;
  box-shadow: 0 2px 8px rgba(44, 111, 187, 0.3);
  z-index: 2;
}
.hot-card:nth-child(2) .hot-rank {
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(201, 154, 46, 0.3);
}
.hot-card:nth-child(3) .hot-rank {
  background: var(--accent-light);
  color: var(--dark);
  box-shadow: 0 2px 8px rgba(232, 180, 79, 0.3);
}
.hot-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 14px;
}
.hot-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hot-views {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
}

/* ========== FAQ ========== */
.faq-section {
  padding: var(--section-space) 0;
  background: var(--bg);
}
.faq-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
}
.faq-side h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  line-height: 1.3;
}
.faq-side p {
  color: var(--text-weak);
  font-size: 16px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.25s, border-color 0.25s;
}
.faq-item.open {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  background: transparent;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.2s;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 20px;
  font-weight: 400;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s, background 0.3s, color 0.3s;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
  transition: max-height 0.35s ease, padding 0.3s ease, background 0.3s;
}
.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
  background: var(--bg);
}

/* ========== CTA ========== */
.cta-section {
  padding: var(--section-space) 0;
  background: linear-gradient(135deg, var(--dark) 0%, #1A4B84 100%);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  opacity: 0.18;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.cta-content h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.cta-points {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-points span {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 30px;
  padding: 6px 16px;
  color: #fff;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cta-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border: 1px solid #D5E0EA;
  border-radius: var(--radius-sm);
  font-size: 15px;
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.form-group textarea {
  height: auto;
  padding: 12px 14px;
  resize: vertical;
  min-height: 80px;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(44, 111, 187, 0.15);
}
.error-msg {
  display: block;
  font-size: 13px;
  color: #d64545;
  margin-top: 4px;
  min-height: 18px;
}
.success-msg {
  background: var(--primary-bg);
  border: 1px solid var(--primary-light);
  color: var(--primary-dark);
  border-radius: var(--radius-sm);
  padding: 24px;
  text-align: center;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo-text {
  color: #fff;
  font-size: 26px;
  display: block;
  margin-bottom: 14px;
}
.footer-brand .logo-text span {
  color: var(--accent-light);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  max-width: 280px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color 0.2s, padding-left 0.2s;
}
.footer-col ul li a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.footer-social a:hover {
  background: var(--accent-light);
  color: var(--dark);
  transform: translateY(-2px);
}

/* ========== 响应式 ========== */
@media (max-width: 1199px) {
  .hot-strip {
    grid-template-columns: repeat(3, 1fr);
  }
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-hero-content h1 {
    font-size: 36px;
  }
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-menu {
    display: none;
  }
  .mobile-menu.open {
    display: flex;
  }
  .category-hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .category-hero-media {
    max-width: 560px;
  }
  .feature-card {
    grid-template-columns: 1fr;
  }
  .feature-card-media {
    min-height: 200px;
    position: relative;
  }
  .feature-card-media img {
    position: static;
    height: 100%;
    min-height: 200px;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cta-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hot-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .header-top {
    height: 58px;
  }
  .logo-text {
    font-size: 20px;
  }
  .city-selector {
    font-size: 13px;
    padding: 4px 10px;
  }
  .header-city-bar {
    padding: 8px 16px;
    gap: 6px;
  }
  .city-chip {
    font-size: 12px;
    padding: 3px 10px;
  }
  .category-hero {
    padding: 32px 0 40px;
  }
  .category-hero-content h1 {
    font-size: 30px;
  }
  .category-hero-content > p {
    font-size: 15px;
  }
  .hero-stats {
    gap: 16px;
  }
  .hero-stats strong {
    font-size: 20px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .breadcrumb {
    padding: 14px 16px 0;
    font-size: 13px;
  }
  .subnav {
    padding: 16px 16px 0;
    gap: 8px;
  }
  .subnav .chip {
    font-size: 13px;
    padding: 5px 14px;
  }
  .section-header {
    margin-bottom: 24px;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .section-header p {
    font-size: 14px;
  }
  .card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .feature-card-body {
    padding: 24px;
  }
  .feature-card-body h3 {
    font-size: 21px;
  }
  .feature-card-body p {
    font-size: 14px;
  }
  .hot-strip {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .hot-card {
    padding: 12px;
  }
  .hot-card h4 {
    font-size: 13px;
  }
  .hot-views {
    font-size: 12px;
  }
  .faq-question {
    padding: 16px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 0 16px;
  }
  .faq-item.open .faq-answer {
    padding: 0 16px 16px;
  }
  .cta-form {
    padding: 24px;
  }
  .cta-content h2 {
    font-size: 26px;
  }
  .cta-points {
    gap: 8px;
  }
  .cta-points span {
    font-size: 12px;
    padding: 4px 10px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .content-grid-section,
  .hot-section,
  .faq-section,
  .cta-section {
    padding: var(--section-space-mobile) 0;
  }
}