/* roulang page: index */
:root {
  --color-primary: #4C7DA6;
  --color-primary-dark: #3A6288;
  --color-primary-soft: #E8F0F6;
  --color-accent: #C9A96E;
  --color-bg: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-border: #E3E9EF;
  --color-text: #1F2A37;
  --color-text-secondary: #637083;
  --color-text-invert: #FFFFFF;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-chip: 999px;
  --shadow-default: 0 4px 20px rgba(47,79,111,0.08);
  --shadow-hover: 0 10px 30px rgba(47,79,111,0.14);
  --transition-base: all 0.25s ease;
  --container-max: 1200px;
  --header-height: 64px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button { font-family: var(--font-family); cursor: pointer; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

section { scroll-margin-top: 80px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: var(--color-text-invert);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.3px;
  white-space: nowrap;
}

.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
  justify-content: center;
}

.nav-chips::-webkit-scrollbar { display: none; }

.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--radius-chip);
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  white-space: nowrap;
  transition: var(--transition-base);
  line-height: 1.4;
}

.chip:hover {
  color: var(--color-primary);
  background: rgba(76, 125, 166, 0.08);
}

.chip.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-text-invert);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  padding: 10px 22px;
  border: none;
  transition: var(--transition-base);
  white-space: nowrap;
  flex-shrink: 0;
}

.header-cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-invert);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.header-cta:active { transform: translateY(1px); }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0;
  background: var(--color-bg);
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: rgba(76, 125, 166, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: 20%;
  width: 260px;
  height: 260px;
  background: rgba(201, 169, 110, 0.05);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-text { flex: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-chip);
  margin-bottom: 20px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.hero h1 {
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--color-text);
  margin-bottom: 18px;
}

.hero-sub {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-text-invert);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  border: none;
  transition: var(--transition-base);
  gap: 8px;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-invert);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 600;
  padding: 13px 30px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--color-primary);
  transition: var(--transition-base);
  gap: 8px;
}

.btn-outline:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

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

.hero-visual {
  flex-shrink: 0;
  position: relative;
  width: 300px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual::before {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  background: var(--color-primary-soft);
  border-radius: 24px;
  transform: rotate(8deg);
  top: 30px;
  right: -10px;
  z-index: 0;
}

.hero-visual::after {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  background: rgba(201, 169, 110, 0.3);
  border-radius: 50%;
  bottom: 20px;
  left: -10px;
  z-index: 0;
}

.phone-card {
  position: relative;
  z-index: 2;
  width: 280px;
  height: 373px;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(160deg, #2C4459 0%, #1F3448 100%);
  box-shadow: 0 16px 40px rgba(31, 52, 72, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
}

.phone-card-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
  z-index: 0;
}

.phone-card-content {
  position: relative;
  z-index: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.phone-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.phone-badge {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-chip);
  letter-spacing: 0.5px;
}

.phone-live {
  width: 8px;
  height: 8px;
  background: #E86C6C;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.phone-card-title {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  padding: 0 20px;
}

.phone-card-bottom {
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  letter-spacing: 1px;
}

.phone-play {
  width: 56px;
  height: 56px;
  background: rgba(255, 255, 255, 0.2);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  backdrop-filter: blur(4px);
}

.phone-play::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 16px solid #fff;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  margin-left: 4px;
}

.phone-progress {
  width: 70%;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  margin: 0 auto;
  overflow: hidden;
}

.phone-progress-fill {
  height: 100%;
  width: 65%;
  background: var(--color-accent);
  border-radius: 999px;
}

/* Section style */
.section {
  padding: 88px 0;
}

.section-alt { background: var(--color-surface); }

.section-white { background: var(--color-surface); }

.section-bg { background: var(--color-bg); }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title-bar {
  width: 4px;
  height: 24px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  letter-spacing: -0.3px;
}

.section-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.section-link:hover { gap: 8px; }

.section-link::after {
  content: "→";
  font-size: 15px;
}

/* Featured cards */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-default);
  padding: 24px;
  min-height: 220px;
  transition: var(--transition-base);
  border: 1px solid rgba(227, 233, 239, 0.4);
  position: relative;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.feature-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.feature-num {
  width: 52px;
  height: 52px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
}

.feature-tag {
  background: var(--color-accent);
  color: var(--color-text);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-chip);
}

.feature-tag.green {
  background: #E5EFE8;
  color: #3C7D53;
}

.feature-tag.blue {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.feature-card-bottom {
  display: flex;
  align-items: center;
  margin-top: 16px;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.feature-card-bottom .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--color-border); }

.feature-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-base);
}

.feature-link:hover { gap: 7px; color: var(--color-primary-dark); }

/* Checklist */
.checklist-container {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-default);
  padding: 12px 36px;
  border: 1px solid rgba(227, 233, 239, 0.3);
}

.checklist-item {
  display: flex;
  align-items: center;
  padding: 20px 0;
  gap: 18px;
  border-bottom: 1px dashed var(--color-border);
}

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

.checklist-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border: 1.5px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
}

.checklist-check {
  border: 1.5px solid var(--color-primary);
  background: var(--color-primary);
  color: var(--color-text-invert);
}

.checklist-check::after {
  content: "✓";
  font-size: 16px;
  line-height: 1;
}

.checklist-title-group { flex: 1; }

.checklist-title-group h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.checklist-title-group p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.checklist-source {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 12px;
  padding: 3px 10px;
  border-radius: var(--radius-chip);
  white-space: nowrap;
}

.checklist-arrow {
  color: var(--color-text-secondary);
  font-size: 18px;
  margin-left: 8px;
  transition: var(--transition-base);
}

.checklist-item:hover .checklist-arrow {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* Testimonials */
.testimonial-section {
  background: rgba(232, 240, 246, 0.5);
}

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

.testimonial-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-default);
  padding: 28px;
  transition: var(--transition-base);
}

.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.testimonial-stars {
  color: var(--color-accent);
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.testimonial-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: 16px;
}

.testimonial-author {
  font-size: 12px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.testimonial-author::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--color-border);
}

/* CTA */
.cta-section {
  background: linear-gradient(180deg, rgba(76, 125, 166, 0.06) 0%, rgba(76, 125, 166, 0.02) 100%);
}

.cta-box {
  text-align: center;
  padding: 40px 32px;
}

.cta-box h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.cta-sub {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-text-invert);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 44px;
  border-radius: var(--radius-btn);
  border: none;
  transition: var(--transition-base);
  box-shadow: 0 6px 20px rgba(76, 125, 166, 0.25);
}

.cta-btn:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-invert);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(58, 98, 136, 0.3);
}

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

.cta-note {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 16px;
}

/* News */
.news-section { background: var(--color-bg); }

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

.news-item {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-default);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: var(--transition-base);
}

.news-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.news-time-block {
  min-width: 70px;
  background: var(--color-bg);
  border-radius: 10px;
  padding: 10px 16px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.news-info { flex: 1; min-width: 0; }

.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.5;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.news-title a { color: var(--color-text); }

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

.news-summary {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 6px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.news-cat {
  display: inline-flex;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 12px;
  padding: 2px 12px;
  border-radius: var(--radius-chip);
  font-weight: 500;
}

.news-read {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-base);
}

.news-read:hover { gap: 8px; color: var(--color-primary-dark); }

.news-load-more {
  text-align: center;
  margin-top: 32px;
}

.btn-load-more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 36px;
  border-radius: var(--radius-btn);
  border: 1.5px solid var(--color-primary);
  transition: var(--transition-base);
  gap: 6px;
}

.btn-load-more:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
}

.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-secondary);
  font-size: 14px;
  background: var(--color-surface);
  border-radius: var(--radius-card);
}

/* FAQ */
.faq-section { background: var(--color-surface); }

.faq-container {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-default);
  border: 1px solid var(--color-border);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition-base);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  gap: 16px;
  user-select: none;
}

.faq-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-primary);
  transition: transform 0.3s ease;
  position: relative;
}

.faq-icon::before {
  content: "";
  width: 12px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.faq-icon::after {
  content: "";
  width: 2px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-icon::after { transform: scaleY(0); }

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item.open .faq-answer { max-height: 200px; }

/* Footer */
.site-footer {
  background: #243B52;
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand .logo-text { color: #fff; }

.footer-brand .logo-icon {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 280px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: var(--transition-base);
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-primary);
}

/* Responsive */
@media (max-width: 1023px) {
  .featured-grid { grid-template-columns: repeat(2, 1fr); }

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

  .hero-inner { gap: 40px; }
}

@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }

  .site-header { height: 56px; }

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

  .logo-icon { width: 32px; height: 32px; }

  .nav-chips { justify-content: flex-start; flex: 1; }

  .header-cta { display: none; }

  .hero { padding: 56px 0; }

  .hero-inner { flex-direction: column; gap: 40px; }

  .hero-text { text-align: center; }

  .hero-sub { margin-left: auto; margin-right: auto; }

  .hero-buttons { justify-content: center; }

  .hero-visual { width: 100%; height: 420px; }

  .phone-card { width: 80vw; max-width: 280px; }

  .section { padding: 56px 0; }

  .section-header { margin-bottom: 28px; }

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

  .checklist-container { padding: 8px 20px; }

  .checklist-item { flex-wrap: wrap; }

  .checklist-source { display: none; }

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

  .news-item { flex-direction: column; align-items: flex-start; gap: 14px; padding: 20px; }

  .news-time-block { min-width: auto; }

  .news-read { align-self: flex-end; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }

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

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }

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

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

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

  .featured-grid { gap: 16px; }

  .feature-card { padding: 20px; }

  .testimonial-card { padding: 20px; }

  .nav-chips { gap: 4px; }

  .chip { padding: 6px 10px; font-size: 13px; }
}

/* roulang page: category1 */
:root {
    --color-primary: #4C7DA6;
    --color-primary-dark: #3A6288;
    --color-primary-soft: #E8F0F6;
    --color-accent: #C9A96E;
    --color-bg: #F6F8FA;
    --color-surface: #FFFFFF;
    --color-border: #E3E9EF;
    --color-text: #1F2A37;
    --color-text-secondary: #637083;
    --color-text-invert: #FFFFFF;
    --shadow-sm: 0 4px 20px rgba(47,79,111,0.08);
    --shadow-md: 0 10px 30px rgba(47,79,111,0.14);
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-full: 999px;
    --spacing-section: 88px;
    --spacing-section-mobile: 56px;
    --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

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

  a {
    text-decoration: none;
    color: inherit;
  }

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

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    transition: all 0.25s ease;
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
  }

  .btn-primary {
    background: var(--color-primary);
    color: var(--color-text-invert);
  }

  .btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }

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

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

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

  .btn:focus-visible,
  a:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
  }

  .header-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 64px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
  }

  .logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.3px;
  }

  .nav-chips {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .nav-chips::-webkit-scrollbar {
    display: none;
  }

  .chip {
    display: inline-block;
    padding: 8px 14px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    white-space: nowrap;
    transition: all 0.22s ease;
    border: 1px solid transparent;
  }

  .chip:hover {
    color: var(--color-primary);
    background: rgba(76, 125, 166, 0.08);
  }

  .chip.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-weight: 600;
  }

  .header-cta {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.25s ease;
    border: 1px solid transparent;
    white-space: nowrap;
  }

  .header-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
  }

  /* Page Hero */
  .page-hero {
    padding: 64px 0 24px;
    background: var(--color-bg);
  }

  .page-hero-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 40px;
    min-height: 220px;
    position: relative;
    overflow: hidden;
  }

  .page-hero-card::before {
    content: "";
    position: absolute;
    top: -40px;
    right: 180px;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(76, 125, 166, 0.06);
  }

  .page-hero-text {
    flex: 1;
    min-width: 0;
    position: relative;
    z-index: 1;
  }

  .page-hero-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
  }

  .page-hero-text h1 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.5px;
    color: var(--color-text);
    margin-bottom: 12px;
  }

  .page-hero-text p {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: 24px;
  }

  .page-hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }

  .page-hero-media {
    flex-shrink: 0;
    width: 220px;
    height: 140px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-sm);
  }

  .page-hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* Section shared */
  .section {
    padding: var(--spacing-section) 0;
  }

  .section-alt {
    background: var(--color-surface);
    padding: var(--spacing-section) 0;
  }

  .section-head {
    text-align: center;
    max-width: 660px;
    margin: 0 auto 48px;
  }

  .section-head h2 {
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.3px;
    color: var(--color-text);
    position: relative;
    display: inline-block;
    padding-bottom: 14px;
  }

  .section-head h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
  }

  .section-head p {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-top: 12px;
  }

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

  .feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
  }

  .feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  .feature-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary-soft);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 20px;
  }

  .feature-card h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text);
  }

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

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

  .scenario-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all 0.25s ease;
  }

  .scenario-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }

  .scenario-card a {
    display: block;
    height: 100%;
  }

  .scenario-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-primary-soft);
  }

  .scenario-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
  }

  .scenario-card:hover .scenario-media img {
    transform: scale(1.04);
  }

  .scenario-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--color-primary);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
  }

  .scenario-body {
    padding: 20px 22px 24px;
  }

  .scenario-body h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
  }

  .scenario-body p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .scenario-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
    padding-top: 12px;
  }

  .scenario-more {
    color: var(--color-primary);
    font-weight: 500;
    transition: transform 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .scenario-more:hover {
    transform: translateX(2px);
  }

  /* Steps */
  .steps-section {
    background: var(--color-surface);
    padding: var(--spacing-section) 0;
  }

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

  .step-item {
    text-align: center;
    padding: 32px 20px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    position: relative;
    transition: all 0.25s ease;
  }

  .step-item:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-4px);
  }

  .step-number {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    margin: 0 auto 18px;
  }

  .step-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
  }

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

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

  .safety-item {
    display: flex;
    gap: 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all 0.25s ease;
  }

  .safety-item:hover {
    box-shadow: var(--shadow-sm);
  }

  .safety-check {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(76, 125, 166, 0.12);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
  }

  .safety-item h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
  }

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

  /* FAQ */
  .faq-section {
    padding: var(--spacing-section) 0;
  }

  .faq-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow 0.25s ease;
  }

  .faq-item:hover {
    box-shadow: var(--shadow-md);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.2s ease;
  }

  .faq-question:hover {
    background: rgba(76, 125, 166, 0.04);
  }

  .faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 600;
    transition: transform 0.3s ease;
  }

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

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 24px;
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.75;
  }

  .faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 24px 20px;
  }

  /* CTA */
  .cta-section {
    padding: 64px 0;
    background: linear-gradient(180deg, rgba(76, 125, 166, 0.06), rgba(76, 125, 166, 0.02));
  }

  .cta-inner {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
  }

  .cta-inner p {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-bottom: 28px;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
  }

  .cta-note {
    display: block;
    margin-top: 16px;
    font-size: 12px;
    color: var(--color-text-secondary);
  }

  /* Footer */
  .site-footer {
    background: #243B52;
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 28px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.4fr;
    gap: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-brand .logo-icon {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
  }

  .footer-brand .logo-text {
    color: #fff;
  }

  .footer-desc {
    font-size: 14px;
    margin-top: 12px;
    line-height: 1.7;
    max-width: 320px;
  }

  .footer-title {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s ease;
  }

  .footer-links a:hover {
    color: #fff;
    text-decoration: underline;
  }

  .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14px;
  }

  .footer-bottom {
    padding-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
  }

  /* Responsive */
  @media (max-width: 1023px) {
    .features-grid,
    .scenario-grid,
    .safety-grid {
      grid-template-columns: repeat(2, 1fr);
    }

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

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

  @media (max-width: 767px) {
    .header-inner {
      height: 56px;
    }

    .logo-text {
      display: none;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      font-size: 14px;
    }

    .nav-chips {
      margin-left: 8px;
      flex: 1;
    }

    .chip {
      padding: 7px 12px;
      font-size: 13px;
    }

    .header-cta {
      display: none;
    }

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

    .page-hero-card {
      flex-direction: column;
      padding: 28px 24px;
      gap: 20px;
    }

    .page-hero-media {
      width: 100%;
      height: 120px;
    }

    .features-grid,
    .scenario-grid,
    .safety-grid,
    .steps-grid {
      grid-template-columns: 1fr;
    }

    .section {
      padding: var(--spacing-section-mobile) 0;
    }

    .section-alt,
    .steps-section {
      padding: var(--spacing-section-mobile) 0;
    }

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

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

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

  @media (max-width: 480px) {
    .container {
      padding-left: 16px;
      padding-right: 16px;
    }

    .page-hero-actions {
      flex-direction: column;
    }

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

    .btn {
      font-size: 14px;
      padding: 13px 24px;
    }

    .scenario-body h3 {
      font-size: 15px;
    }
  }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --color-primary: #4C7DA6;
  --color-primary-dark: #3A6288;
  --color-primary-soft: #E8F0F6;
  --color-accent: #C9A96E;
  --color-bg: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-border: #E3E9EF;
  --color-text: #1F2A37;
  --color-text-secondary: #637083;
  --color-text-invert: #FFFFFF;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 4px 20px rgba(47, 79, 111, 0.08);
  --shadow-hover: 0 10px 30px rgba(47, 79, 111, 0.14);
  --container: 1200px;
  --transition: 0.25s ease;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.3; color: var(--color-text); }
p { margin: 0; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }

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

/* ===== 通用按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  letter-spacing: 0.3px;
  transition: background 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 14px rgba(76, 125, 166, 0.28);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  box-shadow: 0 8px 22px rgba(76, 125, 166, 0.32);
}
.btn-primary:active { transform: translateY(1px); box-shadow: 0 3px 10px rgba(76, 125, 166, 0.24); }
.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: transparent;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.15s ease;
}
.btn-outline:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
}
.btn-outline:active { transform: translateY(1px); }
.btn-outline:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(76, 125, 166, 0.28);
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.logo:hover .logo-icon { background: var(--color-primary-dark); }
.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-chips::-webkit-scrollbar { display: none; }
.chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
  flex-shrink: 0;
}
.chip:hover { color: var(--color-primary); background: var(--color-primary-soft); }
.chip.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 20px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
  box-shadow: 0 4px 12px rgba(76, 125, 166, 0.24);
}
.header-cta:hover { background: var(--color-primary-dark); color: #fff; box-shadow: 0 6px 18px rgba(76, 125, 166, 0.32); }
.header-cta:active { transform: translateY(1px); }
.header-cta:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
}

/* ===== 文章通用横幅 / 面包屑 ===== */
.article-banner {
  position: relative;
  padding: 44px 0 88px;
  overflow: hidden;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.article-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}
.article-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232, 240, 246, 0.92) 0%, rgba(255, 255, 255, 0.96) 100%);
}
.article-banner .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.breadcrumb a:hover { color: var(--color-primary); }
.crumb-sep { color: #B5C2D1; font-size: 12px; }
.crumb-current {
  color: var(--color-text);
  font-weight: 500;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== 文章主区 ===== */
.article-main { padding: 0 0 72px; }
.article-wrap { margin-top: -48px; position: relative; z-index: 3; }

.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 52px 64px;
}
.article-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}
.article-cat {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}
.article-title {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--color-text);
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.meta-item { display: inline-flex; align-items: center; }
.meta-divider { color: #C7D2DE; }
.meta-item svg { width: 15px; height: 15px; margin-right: 5px; }

/* ===== 正文排版 ===== */
.article-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: #2A3545;
  word-wrap: break-word;
}
.article-body > * + * { margin-top: 16px; }
.article-body p { margin: 0 0 16px; }
.article-body h2 {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--color-text);
}
.article-body h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 20px 0 8px;
}
.article-body ul {
  list-style: disc;
  padding-left: 24px;
  margin: 0 0 16px;
}
.article-body ol {
  list-style: decimal;
  padding-left: 24px;
  margin: 0 0 16px;
}
.article-body li { margin: 6px 0; }
.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 8px;
  padding: 16px 22px;
  margin: 24px 0;
  color: #3D4B5C;
  font-size: 15px;
}
.article-body a { color: var(--color-primary); font-weight: 500; border-bottom: 1px solid transparent; }
.article-body a:hover { border-bottom-color: var(--color-primary); }
.article-body img { max-width: 100%; border-radius: var(--radius-md); margin: 24px auto; box-shadow: var(--shadow-card); }
.article-body figure { margin: 24px 0; }
.article-body figcaption { font-size: 13px; color: var(--color-text-secondary); text-align: center; margin-top: 8px; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.article-body th { background: var(--color-primary-soft); color: var(--color-text); font-weight: 600; text-align: left; }
.article-body th, .article-body td { border: 1px solid var(--color-border); padding: 10px 14px; }
.article-body tr:nth-child(even) td { background: #F9FBFD; }
.article-body code {
  background: #EEF3F8;
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-body pre {
  background: #243B52;
  color: #e2edf7;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 24px 0;
}
.article-body pre code { background: transparent; color: inherit; padding: 0; font-size: 14px; }
.article-body hr { border: none; border-top: 1px solid var(--color-border); margin: 32px 0; }

/* ===== 文章底部：标签 / 上一篇下一篇 ===== */
.article-footer {
  max-width: 720px;
  margin: 44px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
}
.tag:hover { background: var(--color-primary); color: #fff; }

.article-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pn-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: #F7FAFC;
  border: 1px solid var(--color-border);
  transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
}
.pn-link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.pn-link.pn-next { align-items: flex-end; text-align: right; }
.pn-label { font-size: 12px; color: var(--color-text-secondary); }
.pn-title { font-size: 15px; font-weight: 600; color: var(--color-text); }

/* ===== 空态 ===== */
.article-empty {
  text-align: center;
  padding: 60px 32px;
}
.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 30px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.article-empty h1 { font-size: 26px; margin-bottom: 12px; }
.article-empty p { color: var(--color-text-secondary); margin-bottom: 28px; }

/* ===== 相关阅读 ===== */
.related-section { padding: 64px 0 20px; }
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}
.section-title {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
}
.section-title::before {
  content: "";
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: var(--color-primary);
}
.section-more {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
  transition: color 0.2s ease, transform 0.2s ease;
}
.section-more:hover { color: var(--color-primary-dark); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border);
}
.related-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-primary-soft);
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-img img { transform: scale(1.05); }
.related-tag {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(47, 79, 111, 0.16);
}
.related-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.related-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; color: var(--color-text); transition: color 0.2s ease; }
.related-card:hover .related-body h3 { color: var(--color-primary); }
.related-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.related-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}
.related-meta .view-link { color: var(--color-primary); font-weight: 500; transition: color 0.2s ease; }
.related-meta .view-link:hover { color: var(--color-primary-dark); }

/* ===== 页脚 ===== */
.site-footer {
  background: #243B52;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  padding: 56px 0 0;
  margin-top: 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-icon { background: rgba(255, 255, 255, 0.14); color: #fff; box-shadow: none; }
.footer-brand .logo-text { color: #fff; }
.footer-desc { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.62); max-width: 320px; }
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255, 255, 255, 0.7); font-size: 14px; transition: color 0.2s ease; }
.footer-links a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 1.6;
}
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== 辅助 ===== */
.back-home {
  text-align: center;
  padding: 20px 0;
  font-size: 14px;
}
.back-home a { color: var(--color-primary); font-weight: 500; }
.back-home a:hover { color: var(--color-primary-dark); }

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .related-grid { gap: 18px; }
  .article-card { padding: 44px 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .site-header, .header-inner { height: 56px; }
  .header-inner { gap: 8px; }
  .logo-text { display: none; }
  .logo-icon { width: 34px; height: 34px; font-size: 13px; }
  .nav-chips { margin-left: auto; gap: 4px; }
  .chip { padding: 6px 12px; font-size: 13px; }
  .header-cta { height: 34px; padding: 0 14px; font-size: 13px; margin-left: 4px; }
  .article-banner { padding: 28px 0 64px; }
  .article-main { padding-bottom: 48px; }
  .article-wrap { margin-top: -36px; }
  .article-card { padding: 28px 18px; border-radius: 14px; }
  .article-header { margin-bottom: 28px; padding-bottom: 24px; }
  .article-title { font-size: 24px; line-height: 1.35; }
  .article-body { font-size: 15px; line-height: 1.8; }
  .article-body h2 { font-size: 19px; margin-top: 28px; }
  .article-body h3 { font-size: 16px; }
  .article-prevnext { grid-template-columns: 1fr; }
  .pn-link.pn-next { align-items: flex-start; text-align: left; }
  .related-section { padding-top: 48px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .related-meta { flex-wrap: wrap; gap: 4px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 28px; }
  .site-footer { padding-top: 40px; margin-top: 32px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .header-cta { display: none; }
  .section-title { font-size: 19px; }
  .article-meta { gap: 8px; font-size: 12px; }
  .article-card { padding: 22px 14px; }
  .crumb-current { max-width: 200px; }
}

/* ===== 焦点状态 ===== */
a:focus-visible, button:focus-visible, .chip:focus-visible, .pn-link:focus-visible, .related-card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
  border-radius: 8px;
}

/* roulang page: category3 */
:root {
  --color-primary: #4C7DA6;
  --color-primary-dark: #3A6288;
  --color-primary-soft: #E8F0F6;
  --color-accent: #C9A96E;
  --color-bg: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-border: #E3E9EF;
  --color-text: #1F2A37;
  --color-text-secondary: #637083;
  --color-text-invert: #FFFFFF;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-chip: 999px;
  --shadow-card: 0 4px 20px rgba(47,79,111,0.08);
  --shadow-card-hover: 0 10px 30px rgba(47,79,111,0.14);
  --space-section: 88px;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

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

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

a { color: var(--color-primary); text-decoration: none; transition: color .2s ease; }

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

button { font-family: inherit; cursor: pointer; }

ul { list-style: none; }

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  height: 64px;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
}

.logo-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  letter-spacing: -0.3px;
}

.nav-chips {
  display: flex;
  gap: 6px;
  margin-left: auto;
  margin-right: auto;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-chips::-webkit-scrollbar { display: none; }

.chip {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-chip);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: all .2s ease;
}

.chip:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.chip.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}

.header-cta {
  flex-shrink: 0;
  height: 38px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  transition: all .25s ease;
}

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

.header-cta:active { transform: translateY(1px); }

/* ===== Hero ===== */
.category-hero {
  padding: 48px 0 32px;
}

.category-hero-card {
  position: relative;
  background: var(--color-surface);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 220px;
  padding: 36px 40px;
  overflow: hidden;
}

.category-hero-info {
  position: relative;
  z-index: 2;
  flex: 1;
}

.hero-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-chip);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
}

.category-hero h1 {
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--color-text);
  margin-bottom: 12px;
}

.category-hero p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  max-width: 620px;
}

.hero-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.category-hero-image {
  position: relative;
  z-index: 2;
  width: 220px;
  height: 140px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  flex-shrink: 0;
  background: var(--color-primary-soft);
}

.category-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border: none;
  transition: all .25s ease;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(60, 100, 140, 0.18);
  color: #fff;
}

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

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--color-primary-dark);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--color-primary);
  transition: all .25s ease;
}

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

/* ===== Section base ===== */
.section {
  padding: var(--space-section) 0;
}

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 14px;
}

.section-title::after {
  content: "";
  display: block;
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--color-primary);
  margin: 14px auto 0;
}

.section-subtitle {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-top: 14px;
}

/* ===== Stats ===== */
.stats-band {
  padding: 40px 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  border-radius: var(--radius-card);
  background: var(--color-bg);
}

.stat-value {
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.stat-label {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: all .25s ease;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.service-image {
  height: 160px;
  overflow: hidden;
  background: var(--color-primary-soft);
}

.service-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.service-tag {
  display: inline-block;
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: var(--radius-chip);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}

.service-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.service-link {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s ease;
}

.service-link:hover { gap: 8px; color: var(--color-primary-dark); }

/* ===== Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-item {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
  text-align: center;
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.feature-text {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ===== Scenarios ===== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.scenario-card {
  background: var(--color-bg);
  border-radius: var(--radius-card);
  padding: 28px 22px;
  border: 1px solid var(--color-border);
  transition: all .25s ease;
}

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

.scenario-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.9;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.scenario-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.scenario-text {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ===== Steps ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: all .25s ease;
  position: relative;
}

.step-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.step-number {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary-soft);
  line-height: 1;
  margin-bottom: 18px;
  font-family: var(--font-sans);
  letter-spacing: -1px;
}

.step-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .25s ease;
}

.faq-item.active {
  box-shadow: var(--shadow-card);
  border-color: transparent;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  transition: color .2s ease;
}

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

.faq-toggle {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  position: relative;
  flex-shrink: 0;
  transition: transform .3s ease, background .3s ease;
}

.faq-toggle::before,
.faq-toggle::after {
  content: "";
  position: absolute;
  background: var(--color-primary);
  border-radius: 1px;
}

.faq-toggle::before {
  width: 10px;
  height: 2px;
  top: 11px;
  left: 7px;
}

.faq-toggle::after {
  width: 2px;
  height: 10px;
  top: 7px;
  left: 11px;
}

.faq-item.active .faq-toggle { transform: rotate(45deg); background: var(--color-primary); }

.faq-item.active .faq-toggle::before,
.faq-item.active .faq-toggle::after { background: #fff; }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  transition: max-height .35s ease, padding .35s ease;
}

.faq-item.active .faq-answer {
  max-height: 360px;
  padding-bottom: 22px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
}

.cta-box {
  background: var(--color-primary-soft);
  border-radius: 24px;
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(76,125,166,0.08);
  top: -60px;
  right: -60px;
}

.cta-box::after {
  content: "";
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(76,125,166,0.06);
  bottom: -50px;
  left: -30px;
}

.cta-box > * { position: relative; z-index: 1; }

.cta-box h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.cta-box p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-dark);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}

.cta-link:hover { border-color: var(--color-primary-dark); }

/* ===== Footer ===== */
.site-footer {
  background: #243B52;
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo-icon {
  background: rgba(255,255,255,0.16);
  color: #fff;
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 320px;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: color .2s ease;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 18px 0;
  font-size: 13px;
  text-align: center;
  color: rgba(255,255,255,0.5);
}

/* ===== Focus ===== */
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
  .section { --space-section: 56px; padding: 56px 0; }
  .container { padding-left: 16px; padding-right: 16px; }
  .site-header { height: 56px; }
  .header-inner { height: auto; min-height: 56px; flex-wrap: wrap; padding: 10px 16px; gap: 8px; }
  .logo-text { display: none; }
  .nav-chips { order: 3; width: 100%; margin-left: 0; margin-right: 0; justify-content: flex-start; gap: 6px; }
  .header-cta { height: 34px; padding: 0 14px; font-size: 13px; margin-left: auto; }
  .category-hero { padding: 24px 0 16px; }
  .category-hero-card { flex-direction: column; padding: 28px 24px; gap: 20px; }
  .category-hero-image { width: 100%; height: 120px; }
  .category-hero p { font-size: 14px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn-primary,
  .hero-actions .btn-outline { width: 100%; }
  .services-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 40px 20px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn-primary { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 480px) {
  .section-title { font-size: 20px; }
  .stat-value { font-size: 28px; }
  .service-card { border-radius: 14px; }
  .feature-item { padding: 22px 16px; }
  .step-card { padding: 24px 18px; }
}

/* roulang page: category2 */
:root {
  --color-primary: #4C7DA6;
  --color-primary-dark: #3A6288;
  --color-primary-soft: #E8F0F6;
  --color-accent: #C9A96E;
  --color-bg: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-border: #E3E9EF;
  --color-text: #1F2A37;
  --color-text-secondary: #637083;
  --color-text-invert: #FFFFFF;
  --radius-lg: 16px;
  --radius-md: 10px;
  --shadow-card: 0 4px 20px rgba(47,79,111,0.08);
  --shadow-hover: 0 10px 30px rgba(47,79,111,0.14);
  --transition: 0.25s ease;
  --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-primary-dark);
}
img {
  display: block;
  max-width: 100%;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-primary);
}
.section {
  padding: 64px 0;
}
.section-alt {
  background: var(--color-surface);
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}
.section-head .section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--color-text);
  margin-bottom: 10px;
}
.section-head p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  height: 64px;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-invert);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
  justify-content: center;
}
.nav-chips::-webkit-scrollbar {
  display: none;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: all var(--transition);
}
.chip:hover {
  color: var(--color-primary);
  background: rgba(76,125,166,0.08);
}
.chip.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 20px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-text-invert);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: all var(--transition);
  flex-shrink: 0;
}
.header-cta:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-invert);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(76,125,166,0.25);
}
.page-hero {
  padding: 48px 0 32px;
}
.hero-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  min-height: 220px;
  padding: 48px 56px;
  display: flex;
  align-items: center;
  background-color: var(--color-surface);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  box-shadow: var(--shadow-card);
}
.hero-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.97) 0%, rgba(255,255,255,0.85) 50%, rgba(255,255,255,0.55) 100%);
  z-index: 1;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.hero-content h1 {
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.4px;
  color: var(--color-text);
  margin-bottom: 14px;
}
.hero-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 540px;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 24px;
}
.hero-meta span {
  font-size: 13px;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-meta span::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  transition: all var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-invert);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-invert);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(76,125,166,0.28);
}
.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}
.btn-lg {
  padding: 15px 40px;
  font-size: 16px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.news-card a {
  display: block;
  color: inherit;
}
.news-card .card-img {
  position: relative;
  height: 172px;
  overflow: hidden;
  background: var(--color-primary-soft);
}
.news-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .card-img img {
  transform: scale(1.04);
}
.card-body {
  padding: 20px 22px 22px;
}
.card-tag {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.card-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 8px;
}
.card-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-secondary);
}
.card-link {
  color: var(--color-primary);
  font-weight: 500;
  transition: transform var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-card:hover .card-link {
  color: var(--color-primary-dark);
}
.card-link span {
  transition: transform 0.2s ease;
}
.news-card:hover .card-link span {
  transform: translateX(2px);
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-item {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.info-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.info-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.info-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}
.info-item p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.scene-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}
.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.scene-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 12px;
}
.scene-card h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 36px;
  height: 3px;
  border-radius: 2px;
  background: var(--color-primary);
}
.scene-list li {
  position: relative;
  padding: 8px 0 8px 28px;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.65;
}
.scene-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  width: 16px;
  height: 10px;
  border-left: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(-45deg);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: process;
}
.process-step {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-card);
  text-align: center;
  counter-increment: process;
  transition: transform var(--transition), box-shadow var(--transition);
}
.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.process-step::before {
  content: counter(process, decimal-leading-zero);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-invert);
  font-size: 15px;
  font-weight: 700;
  margin: 0 auto 16px;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}
.process-step p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.cta-section {
  padding: 64px 0;
  background: linear-gradient(135deg, rgba(76,125,166,0.06) 0%, rgba(201,169,110,0.04) 100%);
}
.cta-box {
  text-align: center;
  background: var(--color-surface);
  border-radius: 20px;
  padding: 56px 40px;
  box-shadow: var(--shadow-card);
  max-width: 760px;
  margin: 0 auto;
}
.cta-box h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-box > p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto 24px;
}
.cta-help {
  margin-top: 14px;
  font-size: 12px;
  color: var(--color-text-secondary);
}
.cta-help a {
  font-weight: 500;
}
.faq-section {
  padding: 64px 0;
}
.faq-container {
  max-width: 720px;
  margin: 0 auto;
}
.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item.open {
  box-shadow: var(--shadow-hover);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: background var(--transition);
}
.faq-question:hover {
  background: var(--color-primary-soft);
}
.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  transition: transform 0.3s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-primary);
  border-radius: 2px;
}
.faq-icon::before {
  top: 12px;
  left: 6px;
  width: 14px;
  height: 2px;
}
.faq-icon::after {
  top: 6px;
  left: 12px;
  width: 2px;
  height: 14px;
  transition: opacity 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-item.open .faq-icon::after {
  opacity: 0;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}
.faq-answer-inner a {
  font-weight: 500;
}
.site-footer {
  background: #243B52;
  color: rgba(255,255,255,0.75);
  padding: 56px 0 24px;
}
.site-footer .logo {
  margin-bottom: 14px;
}
.site-footer .logo-icon {
  background: rgba(255,255,255,0.14);
  color: #fff;
}
.site-footer .logo-text {
  color: #fff;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,0.65);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  text-align: center;
}
@media (max-width: 1023px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 767px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section {
    padding: 48px 0;
  }
  .site-header,
  .header-inner {
    height: 56px;
  }
  .header-inner {
    gap: 8px;
  }
  .logo-text {
    display: none;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }
  .nav-chips {
    flex: 1;
    justify-content: flex-start;
  }
  .chip {
    padding: 7px 12px;
    font-size: 13px;
  }
  .header-cta {
    padding: 8px 14px;
    font-size: 13px;
  }
  .hero-card {
    padding: 32px 24px;
    min-height: 220px;
  }
  .hero-card::after {
    background: linear-gradient(90deg, rgba(255,255,255,0.96) 0%, rgba(255,255,255,0.82) 80%, rgba(255,255,255,0.6) 100%);
  }
  .hero-content {
    max-width: 100%;
  }
  .hero-content h1 {
    font-size: 28px;
  }
  .hero-content p {
    font-size: 15px;
  }
  .hero-meta {
    flex-wrap: wrap;
    gap: 10px 20px;
    margin-top: 18px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-card .card-img {
    height: 200px;
  }
  .info-grid {
    grid-template-columns: 1fr;
  }
  .scene-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .btn-lg {
    padding: 14px 32px;
    font-size: 15px;
    width: 100%;
  }
  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }
  .faq-answer-inner {
    padding: 0 20px 18px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
@media (max-width: 480px) {
  .logo-text {
    display: none;
  }
  .header-cta {
    padding: 7px 12px;
    font-size: 12px;
  }
  .chip {
    padding: 6px 10px;
    font-size: 12px;
  }
  .hero-content h1 {
    font-size: 26px;
  }
  .hero-badge {
    font-size: 12px;
  }
  .info-item {
    padding: 28px 20px;
  }
  .scene-card {
    padding: 28px 20px;
  }
  .process-step {
    padding: 28px 20px;
  }
  .cta-box {
    padding: 32px 20px;
  }
}