/* roulang page: index */
/* =========================================
   Design System / CSS Variables
   ========================================= */
:root {
  --primary: #1B4F8A;
  --primary-dark: #123A66;
  --primary-light: #28669F;
  --accent: #38B2AC;
  --accent-dark: #2A8F8A;
  --accent-light: #E6F5F4;
  --cta: #E8833A;
  --cta-dark: #D16E2A;
  --cta-light: #FDF0E7;
  --bg: #F4F7FA;
  --bg-alt: #EEF2F7;
  --card-bg: #FFFFFF;
  --text-main: #1A2A3A;
  --text-sub: #5A6B7B;
  --text-light: #8A9BAB;
  --border: #E2E8F0;
  --border-dark: #D0D9E2;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(27,79,138,0.06);
  --shadow: 0 4px 16px rgba(27,79,138,0.08);
  --shadow-lg: 0 10px 28px rgba(27,79,138,0.12);
  --shadow-accent: 0 0 0 3px rgba(56,178,172,0.2);
  --transition: all 0.3s ease;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "Inter", "Roboto", "PingFang SC", sans-serif;
}

/* =========================================
   Reset & Base
   ========================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

ul, ol {
  list-style: none;
}

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

input, textarea {
  font-family: inherit;
  font-size: 14px;
}

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

section {
  padding: 72px 0;
}

/* =========================================
   Buttons
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.02em;
  transition: var(--transition);
  border: 1.5px solid transparent;
  text-align: center;
  white-space: nowrap;
}

.btn-lg {
  padding: 14px 34px;
  font-size: 15px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn-primary {
  background: var(--cta);
  color: #ffffff;
  border-color: var(--cta);
  box-shadow: 0 4px 12px rgba(232, 131, 58, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--cta-dark);
  border-color: var(--cta-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(232, 131, 58, 0.32);
}

.btn-primary:active {
  background: #BF5F23;
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(232, 131, 58, 0.22);
}

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

.btn-ghost:hover,
.btn-ghost:focus {
  background: rgba(27, 79, 138, 0.06);
  color: var(--primary-dark);
  transform: translateY(-2px);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(27, 79, 138, 0.1);
}

.btn-ghost:active {
  transform: translateY(0);
  background: rgba(27, 79, 138, 0.1);
}

.btn-outline {
  border-color: var(--border-dark);
  color: var(--text-sub);
  background: #fff;
}

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

.btn-outline:focus-visible {
  outline: none;
  box-shadow: var(--shadow-accent);
}

.btn-block {
  width: 100%;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-accent);
}

/* =========================================
   Section Header
   ========================================= */
.section-header {
  margin-bottom: 44px;
}

.section-header.center {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.section-header.between {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 10px;
}

.section-header p {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 560px;
}

.section-header.center p {
  margin: 0 auto;
}

/* =========================================
   Header / Navigation Card
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 14px 0 4px;
  background: linear-gradient(to bottom, rgba(244, 247, 250, 0.98) 60%, rgba(244, 247, 250, 0.92));
  backdrop-filter: blur(8px);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  background: rgba(244, 247, 250, 0.98);
  box-shadow: 0 2px 10px rgba(27, 79, 138, 0.06);
}

.header-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 10px 14px 10px 22px;
  box-shadow: var(--shadow);
}

.header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

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

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(27, 79, 138, 0.06);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(27, 79, 138, 0.08);
  font-weight: 600;
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  margin-left: 6px;
}

.nav-cta-btn:hover {
  background: var(--primary-dark);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(27, 79, 138, 0.2);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(27, 79, 138, 0.08);
  color: var(--primary);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: rgba(27, 79, 138, 0.14);
}

.nav-close {
  display: none;
  font-size: 20px;
  color: var(--text-sub);
  padding: 4px 8px;
}

/* =========================================
   Hero
   ========================================= */
.hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
  background: var(--bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.14;
  z-index: 0;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(244,247,250,0.96) 30%, rgba(244,247,250,0.82) 70%, rgba(244,247,250,0.88) 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(60% 60% at 80% 20%, rgba(56, 178, 172, 0.08) 0%, transparent 70%);
}

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

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  animation: fadeUp 0.6s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent-dark);
  border: 1px solid rgba(56, 178, 172, 0.2);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-text h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}

.hero-text h1 span {
  color: var(--primary);
  position: relative;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.hero-trust span {
  font-size: 13px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-trust i {
  color: var(--accent);
}

.hero-visual {
  position: relative;
  animation: fadeUp 0.6s ease 0.15s both;
}

.hero-card-main {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.hero-card-img {
  overflow: hidden;
  height: 220px;
}

.hero-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.hero-card-content {
  padding: 22px 24px 24px;
}

.mini-badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.hero-card-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.hero-card-content p {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 12px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

.text-link:hover {
  color: var(--accent-dark);
  gap: 10px;
}

.hero-card-float {
  position: absolute;
  bottom: -18px;
  left: -22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border-radius: var(--radius);
  padding: 10px 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.float-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 14px;
}

.float-item strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
}

.float-item small {
  font-size: 12px;
  color: var(--text-light);
}

/* =========================================
   Stats Band
   ========================================= */
.stats-section {
  padding: 40px 0 20px;
}

.stats-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 32px 48px;
  gap: 30px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  flex: 1;
  min-width: 140px;
}

.stat-number {
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.stat-plus,
.stat-percent {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.stat-item p {
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 6px;
}

.stat-divider {
  width: 1px;
  height: 44px;
  background: var(--border);
}

/* =========================================
   Features Section
   ========================================= */
.features-section {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "wide wide"
    "card1 card2";
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(56, 178, 172, 0.3);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-wide {
  grid-area: wide;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  background: linear-gradient(135deg, #F8FAFC 0%, #F0F5FA 100%);
  border-color: rgba(56, 178, 172, 0.18);
}

.feature-wide .feature-icon {
  width: 64px;
  height: 64px;
  font-size: 24px;
}

.feature-card.feature-wide h3 {
  font-size: 20px;
}

.feature-wide p {
  font-size: 14px;
  color: var(--text-sub);
  max-width: 520px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  background: rgba(27, 79, 138, 0.08);
  color: var(--primary);
  transition: var(--transition);
  margin-bottom: 16px;
}

.feature-icon.accent {
  background: var(--accent-light);
  color: var(--accent-dark);
}

.feature-icon.cta {
  background: var(--cta-light);
  color: var(--cta);
}

.feature-card:hover .feature-icon {
  transform: scale(1.06);
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: #fff;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.65;
}

.feature-links {
  margin-top: 14px;
}

.feature-links a {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-links a:hover {
  gap: 10px;
  color: var(--primary);
}

/* =========================================
   Scenarios Section
   ========================================= */
.scenarios-section {
  background: var(--bg);
}

.scenario-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}

.scenario-item:last-child {
  margin-bottom: 0;
}

.scenario-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.scenario-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.scenario-text {
  position: relative;
  padding: 20px 0;
}

.scenario-num {
  font-family: var(--font-num);
  font-size: 64px;
  font-weight: 800;
  color: rgba(27, 79, 138, 0.1);
  line-height: 1;
  display: block;
  margin-bottom: 16px;
}

.scenario-text h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.scenario-text p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 20px;
}

.scenario-data {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  border: 1px solid rgba(56, 178, 172, 0.2);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text-sub);
}

.data-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.scenario-data strong {
  color: var(--accent-dark);
  font-weight: 700;
}

/* =========================================
   News / CMS List Section
   ========================================= */
.news-section {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
}

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

.news-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 24px 28px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  align-items: start;
}

.news-item:hover {
  border-color: rgba(56, 178, 172, 0.35);
  box-shadow: var(--shadow);
  transform: translateX(4px);
}

.news-date {
  text-align: center;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 14px 8px;
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.4;
}

.news-body {
  min-width: 0;
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

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

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

.news-summary {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.news-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}

.news-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-link:hover {
  color: var(--accent-dark);
  gap: 10px;
}

.news-empty {
  text-align: center;
  padding: 60px 30px;
  border: 1px dashed var(--border-dark);
  border-radius: var(--radius-lg);
  background: var(--bg);
}

.news-empty i {
  font-size: 40px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.news-empty p {
  font-size: 16px;
  color: var(--text-sub);
  margin-bottom: 18px;
}

/* =========================================
   Testimonials Section
   ========================================= */
.testimonials-section {
  background: var(--bg);
}

.client-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px 30px;
  margin-bottom: 48px;
}

.client-logo-item {
  width: 120px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 700;
  color: #B0BCC8;
  letter-spacing: 0.04em;
  transition: var(--transition);
  filter: grayscale(1);
}

.client-logo-item:hover {
  filter: grayscale(0);
  color: var(--primary);
  border-color: rgba(27, 79, 138, 0.2);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 900px;
  margin: 0 auto;
}

.testimonial-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(56, 178, 172, 0.3);
  transform: translateY(-4px);
}

.quote-mark {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 40px;
  color: rgba(56, 178, 172, 0.25);
  line-height: 1;
}

.testimonial-card > p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.testimonial-author strong {
  display: block;
  font-size: 14px;
  color: var(--text-main);
}

.testimonial-author span {
  display: block;
  font-size: 12px;
  color: var(--text-light);
}

/* =========================================
   FAQ Section
   ========================================= */
.faq-section {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
}

.faq-accordion {
  max-width: 820px;
  margin: 0 auto;
  background: transparent;
  border: none;
}

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

.faq-accordion .accordion-item:hover {
  border-color: rgba(56, 178, 172, 0.4);
}

.faq-accordion .accordion-item.is-active {
  border-color: rgba(56, 178, 172, 0.5);
  box-shadow: var(--shadow);
}

.faq-accordion .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  padding: 18px 22px;
  background: transparent;
  border: none;
  transition: var(--transition);
  position: relative;
}

.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus {
  background: rgba(56, 178, 172, 0.06);
  color: var(--primary-dark);
}

.faq-accordion .accordion-title::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  color: var(--accent);
  transition: transform 0.3s ease;
  position: static;
  margin-left: auto;
}

.faq-accordion .accordion-item.is-active .accordion-title::after {
  transform: rotate(180deg);
  color: var(--accent-dark);
}

.faq-accordion .accordion-content {
  padding: 0 22px 18px;
  border: none;
  background: rgba(56, 178, 172, 0.04);
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.72;
}

/* =========================================
   CTA Section
   ========================================= */
.cta-section {
  background: var(--bg);
}

.cta-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(56, 178, 172, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cta-left h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.3;
}

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

.cta-contact-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cta-contact-info span {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
}

.cta-contact-info i {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  color: var(--accent-dark);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.cta-right {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-main);
  background: #fff;
  transition: var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-light);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

/* =========================================
   Footer
   ========================================= */
.site-footer {
  background: var(--text-main);
  color: #CDD8E3;
  padding: 60px 0 0;
  border-top: 4px solid var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #9CAFBE;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: #9CAFBE;
  padding: 4px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 14px;
  color: #9CAFBE;
  padding: 4px 0;
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 24px 0 28px;
}

.footer-bottom p {
  font-size: 13px;
  color: #7C8F9E;
}

/* =========================================
   Sticky Bottom Bar
   ========================================= */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(27, 79, 138, 0.08);
  padding: 8px 0;
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.sticky-bar.show {
  transform: translateY(0);
  opacity: 1;
}

.sticky-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  position: relative;
}

.sticky-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sticky-text i {
  color: var(--accent);
}

.sticky-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text-sub);
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.sticky-close:hover {
  background: rgba(232, 131, 58, 0.1);
  color: var(--cta);
}

body.has-sticky-bar {
  padding-bottom: 60px;
}

/* =========================================
   Responsive Breakpoints
   ========================================= */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

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

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

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

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

  .hero-card-float {
    left: 12px;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "wide wide"
      "card1 card2";
  }

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

  .scenario-item.reverse .scenario-img {
    order: 0;
  }

  .scenario-img img {
    height: 260px;
  }

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

@media (max-width: 768px) {
  section {
    padding: 56px 0;
  }

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

  .header-card {
    padding: 8px 12px;
  }

  .nav-toggle {
    display: flex;
  }

  .desktop-cta {
    display: none;
  }

  .header-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: var(--card-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 64px 20px 24px;
    gap: 8px;
    box-shadow: -8px 0 24px rgba(27, 79, 138, 0.12);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 120;
    border-left: 1px solid var(--border);
  }

  .header-nav.open {
    transform: translateX(0);
  }

  .header-nav .nav-cta-btn {
    margin-left: 0;
    margin-top: 12px;
    justify-content: center;
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
  }

  .nav-close {
    display: block;
    position: absolute;
    top: 16px;
    right: 16px;
  }

  .hero {
    padding: 120px 0 60px;
  }

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

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

  .hero-actions .btn {
    width: 100%;
    max-width: 320px;
  }

  .stats-band {
    padding: 24px 20px;
    gap: 18px;
  }

  .stat-number {
    font-size: 30px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "wide"
      "card1"
      "card2";
  }

  .feature-wide {
    grid-template-columns: 1fr;
    gap: 16px;
    text-align: center;
  }

  .feature-icon {
    margin-left: auto;
    margin-right: auto;
  }

  .news-item {
    grid-template-columns: 90px 1fr;
    padding: 18px;
    gap: 16px;
  }

  .news-date {
    font-size: 12px;
    padding: 10px 6px;
  }

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

  .cta-panel {
    grid-template-columns: 1fr;
    padding: 32px 24px;
    gap: 32px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .logo-text {
    font-size: 15px;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
    font-size: 12px;
  }

  .hero {
    padding: 106px 0 48px;
  }

  .hero-text h1 {
    font-size: 25px;
  }

  .hero-card-img {
    height: 180px;
  }

  .hero-card-float {
    display: none;
  }

  .stats-band {
    flex-direction: column;
    padding: 20px 16px;
  }

  .stat-divider {
    width: 60%;
    height: 1px;
  }

  .scenario-img img {
    height: 210px;
  }

  .scenario-num {
    font-size: 48px;
  }

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

  .news-date {
    display: none;
  }

  .news-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .client-logo-item {
    width: 45%;
    font-size: 14px;
  }

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

  .sticky-text span {
    display: none;
  }

  .sticky-bar .btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #1B4F8A;
      --primary-dark: #123A63;
      --primary-light: #2A6DB8;
      --accent: #38B2AC;
      --accent-light: #E6F7F6;
      --cta: #E8833A;
      --cta-hover: #D4731F;
      --bg: #F4F7FA;
      --white: #FFFFFF;
      --text: #1A2A3A;
      --text-secondary: #5A6B7B;
      --border: #E2E8F0;
      --radius: 10px;
      --radius-btn: 6px;
      --radius-pill: 999px;
      --shadow: 0 4px 14px rgba(27, 79, 138, .08);
      --shadow-hover: 0 10px 24px rgba(27, 79, 138, .14);
      --font-main: "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      font-family: var(--font-main);
      font-size: 15px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
      height: auto;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease;
    }
    a:hover {
      color: var(--cta);
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text);
      line-height: 1.3;
      margin: 0 0 14px;
      font-weight: 600;
    }
    p {
      margin: 0 0 14px;
    }

    /* ===== 容器 ===== */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 16px;
    }

    /* ===== 通用板块 ===== */
    .page-section {
      padding: 70px 0;
    }
    .section-label {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
      color: var(--accent);
      background: var(--accent-light);
      border-radius: var(--radius-pill);
      padding: 4px 16px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 30px;
      margin-bottom: 16px;
      color: var(--text);
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-secondary);
      max-width: 680px;
    }

    /* ===== Header ===== */
    .site-header {
      position: relative;
      z-index: 1000;
      padding-top: 12px;
      background: transparent;
    }
    .site-header.is-scrolled {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(8px);
      box-shadow: 0 2px 12px rgba(27,79,138,.08);
      padding: 8px 0;
      animation: fadeDown .35s ease;
    }
    @keyframes fadeDown {
      from { opacity: 0; transform: translateY(-10px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .header-card {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      background: var(--white);
      border-radius: 12px;
      box-shadow: var(--shadow);
      padding: 14px 22px;
      border: 1px solid rgba(226,232,240,.7);
      transition: box-shadow .3s ease;
    }
    .header-card:hover {
      box-shadow: var(--shadow-hover);
    }
    .header-logo a {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 700;
      color: var(--text);
    }
    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 800;
      letter-spacing: .5px;
    }
    .logo-text {
      font-size: 16px;
      font-weight: 700;
      color: var(--text);
      white-space: nowrap;
    }
    .header-nav {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      display: inline-block;
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 14px;
      color: var(--text);
      font-weight: 500;
      transition: background .25s ease, color .25s ease;
      white-space: nowrap;
    }
    .nav-link:hover {
      color: var(--primary);
      background: rgba(27,79,138,.06);
    }
    .nav-link.active {
      color: var(--primary);
      background: rgba(27,79,138,.08);
      font-weight: 600;
    }
    .nav-cta-btn {
      display: inline-block;
      padding: 8px 20px;
      border-radius: var(--radius-btn);
      background: var(--cta);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(232,131,58,.25);
      transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
      white-space: nowrap;
    }
    .nav-cta-btn:hover {
      background: var(--cta-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(232,131,58,.32);
    }
    .desktop-cta {
      display: inline-block;
    }
    .nav-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 20px;
      color: var(--text);
      cursor: pointer;
      padding: 8px;
    }
    .nav-close {
      display: none;
    }

    /* ===== 页面Hero ===== */
    .page-hero {
      position: relative;
      background: linear-gradient(135deg, rgba(18,58,99,.96), rgba(27,79,138,.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
      padding: 80px 0 70px;
      color: #fff;
      text-align: center;
      overflow: hidden;
    }
    .page-hero::after {
      content: "";
      position: absolute;
      right: -80px;
      top: -60px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: rgba(56,178,172,.18);
      filter: blur(60px);
    }
    .page-hero .container {
      position: relative;
      z-index: 2;
    }
    .hero-breadcrumb {
      font-size: 13px;
      color: rgba(255,255,255,.7);
      margin-bottom: 20px;
    }
    .hero-breadcrumb a {
      color: rgba(255,255,255,.85);
    }
    .hero-breadcrumb a:hover {
      color: #fff;
    }
    .hero-breadcrumb span {
      margin: 0 6px;
    }
    .page-hero h1 {
      font-size: 38px;
      color: #fff;
      margin-bottom: 14px;
      letter-spacing: 1px;
    }
    .page-hero p {
      font-size: 16px;
      color: rgba(255,255,255,.85);
      max-width: 560px;
      margin: 0 auto 26px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      gap: 12px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .btn {
      display: inline-block;
      padding: 11px 28px;
      border-radius: var(--radius-btn);
      font-size: 14px;
      font-weight: 600;
      border: none;
      cursor: pointer;
      transition: all .25s ease;
    }
    .btn-primary {
      background: var(--cta);
      color: #fff;
      box-shadow: 0 4px 14px rgba(232,131,58,.3);
    }
    .btn-primary:hover {
      background: var(--cta-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(232,131,58,.38);
    }
    .btn-outline {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255,255,255,.6);
    }
    .btn-outline:hover {
      border-color: #fff;
      background: rgba(255,255,255,.1);
      color: #fff;
    }

    /* ===== 分类简介 ===== */
    .intro-section {
      background: var(--white);
      border-bottom: 1px solid var(--border);
    }
    .intro-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .intro-content p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 12px;
    }
    .intro-tags {
      margin-top: 22px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .tag {
      display: inline-block;
      padding: 5px 16px;
      border-radius: var(--radius-pill);
      background: var(--accent-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 500;
    }

    /* ===== 图文介绍 ===== */
    .feature-block {
      padding: 70px 0;
    }
    .feature-block + .feature-block {
      border-top: 1px solid var(--border);
    }
    .feature-media {
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow);
      background: #fff;
    }
    .feature-media img {
      width: 100%;
      object-fit: cover;
      min-height: 300px;
      max-height: 380px;
      transition: transform .5s ease;
    }
    .feature-media:hover img {
      transform: scale(1.02);
    }
    .feature-body {
      padding: 20px 0;
    }
    .feature-num {
      font-size: 13px;
      color: var(--accent);
      font-weight: 700;
      letter-spacing: 1px;
      margin-bottom: 6px;
    }
    .feature-body h2 {
      font-size: 27px;
      margin-bottom: 12px;
    }
    .feature-body p {
      color: var(--text-secondary);
      margin-bottom: 16px;
      max-width: 440px;
    }
    .feature-data {
      display: inline-block;
      padding: 8px 20px;
      border-radius: var(--radius-pill);
      background: var(--accent-light);
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      border-left: 3px solid var(--accent);
    }

    /* ===== 竖排列表卡片 ===== */
    .list-cards-section {
      background: var(--bg);
    }
    .list-cards-wrap {
      margin-top: 30px;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .list-card {
      display: flex;
      gap: 24px;
      align-items: flex-start;
      background: var(--white);
      border-radius: 12px;
      padding: 26px 30px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(226,232,240,.6);
      transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
    }
    .list-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--accent);
    }
    .list-card-num {
      font-size: 36px;
      font-weight: 800;
      line-height: 1;
      color: rgba(27,79,138,.18);
      min-width: 70px;
      font-family: "Inter", san-serif;
      transition: color .28s ease;
    }
    .list-card:hover .list-card-num {
      color: var(--accent);
    }
    .list-card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--accent-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 18px;
      flex-shrink: 0;
    }
    .list-card-body {
      flex: 1;
    }
    .list-card-body h3 {
      font-size: 19px;
      margin-bottom: 6px;
    }
    .list-card-body p {
      color: var(--text-secondary);
      font-size: 14px;
      margin-bottom: 10px;
      max-width: 720px;
    }
    .list-card-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .list-card-link i {
      transition: transform .25s ease;
      font-size: 13px;
    }
    .list-card-link:hover i {
      transform: translateX(4px);
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--white);
    }
    .faq-wrap {
      max-width: 820px;
      margin: 30px auto 0;
    }
    .faq-wrap .accordion {
      list-style: none;
      padding: 0;
      margin: 0;
      background: transparent;
    }
    .faq-wrap .accordion-item {
      background: var(--bg);
      border-radius: 10px;
      margin-bottom: 12px;
      border: 1px solid var(--border);
      overflow: hidden;
      transition: border-color .25s ease;
    }
    .faq-wrap .accordion-item:hover {
      border-color: var(--accent);
    }
    .faq-wrap .accordion-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      background: transparent;
      border-bottom: 1px solid transparent;
      transition: background .25s ease;
    }
    .faq-wrap .accordion-title::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 13px;
      color: var(--accent);
      transition: transform .3s ease;
      margin-left: 10px;
    }
    .faq-wrap .accordion-item.is-active > .accordion-title::after {
      transform: rotate(180deg);
    }
    .faq-wrap .accordion-title h3 {
      font-size: 16px;
      margin: 0;
      font-weight: 600;
    }
    .faq-wrap .accordion-content {
      padding: 4px 24px 18px;
      font-size: 14px;
      color: var(--text-secondary);
      background: rgba(230,247,246,.35);
      border-bottom: none;
    }
    .faq-wrap .accordion-content p {
      margin-bottom: 0;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 60px 0 80px;
      background: var(--bg);
    }
    .cta-panel {
      background: linear-gradient(120deg, var(--primary), var(--primary-dark));
      border-radius: 16px;
      padding: 52px 40px;
      color: #fff;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: 0 12px 30px rgba(27,79,138,.2);
    }
    .cta-panel::before {
      content: "";
      position: absolute;
      top: -40px;
      right: -40px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(56,178,172,.25);
      filter: blur(50px);
    }
    .cta-panel h2 {
      color: #fff;
      font-size: 28px;
      margin-bottom: 10px;
      position: relative;
      z-index: 1;
    }
    .cta-panel p {
      color: rgba(255,255,255,.85);
      font-size: 15px;
      margin-bottom: 24px;
      position: relative;
      z-index: 1;
    }
    .cta-panel .btn {
      position: relative;
      z-index: 1;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #142B44;
      color: rgba(255,255,255,.7);
      padding: 60px 0 0;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 30px;
      padding-bottom: 40px;
    }
    .footer-logo {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .footer-brand p {
      line-height: 1.7;
      color: rgba(255,255,255,.6);
      margin-top: 10px;
      max-width: 300px;
    }
    .footer-links h4,
    .footer-contact h4 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 14px;
      font-weight: 600;
    }
    .footer-links a {
      display: block;
      color: rgba(255,255,255,.65);
      margin-bottom: 10px;
      transition: all .25s ease;
    }
    .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }
    .footer-contact p {
      color: rgba(255,255,255,.65);
      margin-bottom: 8px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.1);
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
      color: rgba(255,255,255,.5);
      font-size: 13px;
    }

    /* ===== 粘性转化条 ===== */
    .sticky-cta {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 999;
      background: rgba(255,255,255,.96);
      backdrop-filter: blur(8px);
      box-shadow: 0 -4px 16px rgba(27,79,138,.1);
      border-top: 1px solid var(--border);
      padding: 0;
      transform: translateY(100%);
      transition: transform .4s ease;
    }
    .sticky-cta.show {
      transform: translateY(0);
    }
    .sticky-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 10px 24px;
      max-width: 1200px;
      margin: 0 auto;
    }
    .sticky-cta-text {
      font-size: 14px;
      color: var(--text);
      font-weight: 500;
    }
    .sticky-cta-text i {
      color: var(--cta);
      margin-right: 6px;
    }
    .sticky-cta .btn {
      padding: 9px 20px;
      font-size: 13px;
    }
    .sticky-close {
      position: absolute;
      top: -14px;
      right: 12px;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--white);
      border: 1px solid var(--border);
      box-shadow: 0 2px 6px rgba(0,0,0,.08);
      cursor: pointer;
      font-size: 13px;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all .25s ease;
    }
    .sticky-close:hover {
      background: #f0f1f3;
      color: var(--cta);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .page-hero h1 {
        font-size: 32px;
      }
      .header-card {
        padding: 12px 16px;
      }
      .nav-link {
        padding: 6px 10px;
        font-size: 13px;
      }
    }

    @media (max-width: 768px) {
      .page-section {
        padding: 50px 0;
      }
      .section-title {
        font-size: 24px;
      }
      .header-card {
        flex-wrap: wrap;
      }
      .header-nav {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 280px;
        background: var(--white);
        box-shadow: -8px 0 30px rgba(0,0,0,.12);
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 24px 24px;
        z-index: 2000;
        overflow-y: auto;
      }
      .header-nav.is-open {
        display: flex;
      }
      .nav-close {
        display: flex;
        position: absolute;
        top: 14px;
        right: 14px;
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background: var(--bg);
        border: none;
        font-size: 15px;
        color: var(--text-secondary);
        cursor: pointer;
        align-items: center;
        justify-content: center;
      }
      .nav-link {
        width: 100%;
        padding: 12px 0;
        font-size: 15px;
        border-bottom: 1px solid var(--border);
      }
      .nav-cta-btn.desktop-cta {
        display: none;
      }
      .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .desktop-cta {
        display: none;
      }
      .sticky-cta-text {
        font-size: 13px;
      }
      .list-card {
        flex-direction: column;
        padding: 20px;
        gap: 14px;
      }
      .list-card-num {
        font-size: 28px;
        min-width: auto;
      }
      .cta-panel {
        padding: 36px 24px;
      }
      .cta-panel h2 {
        font-size: 22px;
      }
      .page-hero h1 {
        font-size: 28px;
      }
    }

    @media (max-width: 520px) {
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .header-logo .logo-text {
        font-size: 14px;
      }
      .page-hero p {
        font-size: 14px;
      }
      .hero-actions .btn {
        padding: 10px 20px;
        font-size: 13px;
      }
      .sticky-cta-inner {
        flex-direction: column;
        padding: 12px 16px;
      }
      .sticky-cta-text {
        display: none;
      }
      .sticky-cta .btn {
        width: 100%;
        text-align: center;
      }
    }

/* roulang page: article */
:root {
    --primary: #1B4F8A;
    --primary-dark: #143A68;
    --primary-light: #2E6AAE;
    --accent: #38B2AC;
    --accent-light: #E6F7F6;
    --cta: #E8833A;
    --cta-hover: #D6752B;
    --bg: #F4F7FA;
    --card: #FFFFFF;
    --text: #1A2A3A;
    --text-light: #5A6B7B;
    --border: #E2E8F0;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow: 0 4px 12px rgba(27,79,138,0.08);
    --shadow-hover: 0 8px 20px rgba(27,79,138,0.14);
    --transition: all .25s ease;
    --container: 1200px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    line-height: 1.4;
    white-space: nowrap;
}
.btn:focus-visible { outline: 3px solid rgba(56,178,172,.4); outline-offset: 2px; }
.btn-primary {
    background: var(--cta);
    color: #fff;
    box-shadow: 0 4px 12px rgba(232,131,58,.28);
}
.btn-primary:hover {
    background: var(--cta-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(232,131,58,.36);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(232,131,58,.3); }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}
.btn-outline:hover {
    background: rgba(27,79,138,.06);
    border-color: var(--primary-light);
    color: var(--primary-light);
}
.btn-light {
    background: rgba(255,255,255,.14);
    color: #fff;
    border: 1px solid rgba(255,255,255,.38);
    backdrop-filter: blur(4px);
}
.btn-light:hover { background: rgba(255,255,255,.24); color: #fff; }

/* ===== 顶部导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg);
    padding: 14px 0 4px;
}
.header-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: rgba(255,255,255,.94);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-lg);
    padding: 10px 20px;
    box-shadow: 0 2px 8px rgba(27,79,138,.06), 0 0 0 1px rgba(27,79,138,.03);
    border: 1px solid rgba(255,255,255,.7);
}
.header-logo a { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: 10px;
    font-weight: 800;
    font-size: 14px;
    letter-spacing: .5px;
    box-shadow: 0 4px 10px rgba(27,79,138,.22);
}
.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: .3px;
    white-space: nowrap;
}
.header-nav { display: flex; align-items: center; gap: 2px; }
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--text-light);
    text-decoration: none;
    font-size: 14.5px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: rgba(56,178,172,.08); }
.nav-link.active { color: var(--primary); background: rgba(56,178,172,.12); font-weight: 600; }
.nav-link:focus-visible { outline: 3px solid rgba(56,178,172,.35); outline-offset: 1px; }
.nav-cta-btn {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    border-radius: 6px;
    background: var(--cta);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 10px rgba(232,131,58,.28);
    white-space: nowrap;
}
.nav-cta-btn:hover { background: var(--cta-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(232,131,58,.36); }
.desktop-cta { margin-left: 8px; }
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 20px;
    color: var(--text);
    padding: 8px;
    cursor: pointer;
    border-radius: 8px;
}
.nav-toggle:hover { background: rgba(56,178,172,.1); }
.nav-close { display: none; }

/* ===== 文章页 Banner ===== */
.article-banner {
    position: relative;
    background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    padding: 56px 0 48px;
    margin-top: 10px;
    border-radius: 16px;
    overflow: hidden;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(20,58,104,.94) 0%, rgba(27,79,138,.82) 55%, rgba(56,178,172,.55) 100%);
    z-index: 1;
}
.article-banner .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,.82);
    flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,.82); text-decoration: none; transition: var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255,255,255,.45); }
.breadcrumb .current { color: #fff; font-weight: 500; }
.breadcrumb .current-cat { color: rgba(255,255,255,.9); }

/* ===== 文章主体 ===== */
.article-main { padding: 40px 0 20px; }
.article-wrap {
    max-width: 900px;
    margin: 0 auto;
    background: var(--card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: 48px 56px 40px;
    border: 1px solid rgba(255,255,255,.8);
}
.article-head {
    text-align: center;
    margin-bottom: 36px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}
.article-head h1 {
    font-size: 34px;
    line-height: 1.35;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    letter-spacing: .3px;
}
.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    color: var(--text-light);
    font-size: 14px;
    flex-wrap: wrap;
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { font-size: 13px; opacity: .7; }
.meta-tag {
    background: var(--accent-light);
    color: var(--accent);
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    display: inline-block;
}
.article-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text);
    max-width: 720px;
    margin: 0 auto;
}
.article-content p { margin-bottom: 1.6em; }
.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 2em 0 1em;
    padding-left: 14px;
    border-left: 4px solid var(--accent);
    line-height: 1.4;
}
.article-content h3 {
    font-size: 19px;
    font-weight: 600;
    margin: 1.8em 0 .8em;
    line-height: 1.5;
}
.article-content h4 {
    font-size: 17px;
    font-weight: 600;
    margin: 1.5em 0 .6em;
}
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin: 28px auto;
}
.article-content a { color: var(--primary); border-bottom: 1px solid rgba(27,79,138,.25); }
.article-content a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.article-content ul,
.article-content ol { margin: 0 0 1.6em 1.4em; }
.article-content li { margin-bottom: .4em; }
.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: var(--accent-light);
    padding: 18px 24px;
    border-radius: 0 10px 10px 0;
    margin: 28px 0;
    color: var(--text-light);
    font-style: normal;
}
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    border-radius: 8px;
    overflow: hidden;
}
.article-content th {
    background: var(--primary);
    color: #fff;
    text-align: left;
}
.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: 12px 16px;
}
.article-content tr:nth-child(even) { background: #F8FAFC; }
.article-content code {
    background: #EDF2F7;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: .92em;
    font-family: "SFMono-Regular", Consolas, monospace;
}
.article-content pre {
    background: #1A2A3A;
    color: #E2E8F0;
    padding: 20px;
    border-radius: 10px;
    overflow-x: auto;
    margin: 28px 0;
    line-height: 1.6;
}
.article-content pre code { background: transparent; color: inherit; padding: 0; }

/* 内容未找到 */
.article-not-found {
    text-align: center;
    padding: 60px 20px;
    max-width: 720px;
    margin: 0 auto;
}
.article-not-found i {
    font-size: 48px;
    color: var(--accent);
    margin-bottom: 16px;
    display: inline-block;
}
.article-not-found h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 12px;
}
.article-not-found p {
    color: var(--text-light);
    margin-bottom: 24px;
}

/* ===== 文末区 ===== */
.article-foot {
    max-width: 720px;
    margin: 48px auto 0;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.tag-label { font-size: 14px; color: var(--text-light); font-weight: 500; }
.tag-pill {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-light);
    font-size: 13px;
    text-decoration: none;
    transition: var(--transition);
}
.tag-pill:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}
.article-pager {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.pager-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-light);
    font-size: 14px;
    text-decoration: none;
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.pager-link:hover {
    color: var(--primary);
    border-color: var(--primary-light);
    background: #fff;
    box-shadow: var(--shadow);
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: 50px 0 10px;
}
.section-head {
    text-align: center;
    margin-bottom: 40px;
}
.section-head h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: .3px;
}
.section-head p {
    color: var(--text-light);
    font-size: 15px;
    max-width: 520px;
    margin: 0 auto;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,.7);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.related-card .card-img {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    position: relative;
}
.related-card .card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.related-card h3 {
    font-size: 17px;
    line-height: 1.5;
    margin-bottom: 8px;
}
.related-card h3 a {
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
}
.related-card h3 a:hover { color: var(--primary); }
.related-card .card-summary {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.related-card .card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-light);
}
.related-card .card-foot a {
    color: var(--accent);
    font-size: 13px;
    font-weight: 500;
}
.related-card .card-foot a:hover { color: var(--primary); }

/* ===== CTA区 ===== */
.cta-section { padding: 50px 0 20px; }
.cta-card {
    background: linear-gradient(115deg, var(--primary-dark) 0%, var(--primary) 60%, #2E6AAE 100%);
    border-radius: var(--radius-xl);
    padding: 56px 60px;
    color: #fff;
    position: relative;
    overflow: hidden;
    text-align: center;
}
.cta-card::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(56,178,172,.2);
}
.cta-card::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: 30px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255,255,255,.06);
}
.cta-card h2 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}
.cta-card p {
    font-size: 16px;
    color: rgba(255,255,255,.82);
    max-width: 520px;
    margin: 0 auto 28px;
    position: relative;
    z-index: 1;
}
.cta-card .btn-group {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* ===== FAQ ===== */
.faq-section { padding: 50px 0 30px; }
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-accordion {
    list-style: none;
    background: transparent;
    border: none;
}
.faq-accordion .accordion-item {
    background: var(--card);
    border-radius: var(--radius-lg);
    margin-bottom: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    list-style: none;
}
.faq-accordion .accordion-item:hover { border-color: var(--accent); }
.faq-accordion .accordion-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: var(--card);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}
.faq-accordion .accordion-title::before {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 14px;
    color: var(--accent);
    transition: transform .3s ease;
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
}
.faq-accordion .accordion-item.is-active > .accordion-title::before {
    transform: translateY(-50%) rotate(180deg);
}
.faq-accordion .accordion-title:focus-visible { outline: 3px solid rgba(56,178,172,.35); }
.faq-accordion .accordion-content {
    padding: 0 24px 20px;
    color: var(--text-light);
    line-height: 1.7;
    font-size: 15px;
    background: var(--card);
    border-top: 1px solid transparent;
}
.faq-accordion .accordion-item.is-active .accordion-content {
    border-top-color: var(--border);
    background: #FAFDFD;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #12263A;
    color: rgba(255,255,255,.75);
    padding: 60px 0 30px;
    margin-top: 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .footer-logo {
    font-size: 21px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: .3px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255,255,255,.58);
    max-width: 360px;
}
.footer-links h4,
.footer-contact h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-links a {
    display: block;
    color: rgba(255,255,255,.62);
    text-decoration: none;
    font-size: 14px;
    padding: 4px 0;
    transition: var(--transition);
}
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p {
    font-size: 14px;
    color: rgba(255,255,255,.62);
    margin-bottom: 6px;
}
.footer-bottom {
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255,255,255,.4);
}

/* ===== 底部固定转化条 ===== */
.sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(10px);
    box-shadow: 0 -4px 20px rgba(27,79,138,.08);
    z-index: 999;
    transform: translateY(120%);
    opacity: 0;
    transition: all .45s cubic-bezier(.22,.61,.36,1);
    border-top: 1px solid var(--border);
}
.sticky-bar.visible { transform: translateY(0); opacity: 1; }
.sticky-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    max-width: var(--container);
    margin: 0 auto;
    padding: 12px 48px 12px 20px;
    position: relative;
}
.sticky-text {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}
.sticky-text span { color: var(--accent); font-weight: 600; }
.sticky-bar .btn { padding: 10px 22px; font-size: 14px; }
.sticky-close {
    position: absolute;
    top: 50%;
    right: 12px;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: var(--bg);
    border-radius: 50%;
    border: 1px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--text-light);
    transition: var(--transition);
}
.sticky-close:hover { color: var(--cta); border-color: var(--cta); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-wrap { padding: 40px 36px; }
    .cta-card { padding: 44px 36px; }
}
@media (max-width: 768px) {
    .header-card { flex-wrap: wrap; }
    .desktop-cta { display: none; }
    .nav-toggle { display: inline-flex; }
    .header-nav {
        position: fixed;
        top: 0;
        right: -300px;
        width: 280px;
        height: 100vh;
        background: var(--card);
        flex-direction: column;
        align-items: stretch;
        padding: 64px 24px 30px;
        box-shadow: -12px 0 30px rgba(0,0,0,.1);
        transition: right .32s ease;
        z-index: 1100;
        gap: 6px;
    }
    .header-nav.open { right: 0; }
    .header-nav .nav-close {
        display: flex;
        position: absolute;
        top: 16px;
        right: 16px;
        width: 36px;
        height: 36px;
        align-items: center;
        justify-content: center;
        background: var(--bg);
        border-radius: 8px;
        color: var(--text-light);
        font-size: 16px;
        text-decoration: none;
    }
    .header-nav .nav-close:hover { background: rgba(232,131,58,.1); color: var(--cta); }
    .header-nav .nav-link {
        padding: 12px 16px;
        font-size: 15.5px;
        border-radius: 10px;
    }
    .header-nav .nav-cta-btn { margin-top: 10px; justify-content: center; }
    .article-banner { padding: 40px 0 32px; }
    .article-wrap { padding: 28px 22px; }
    .article-head h1 { font-size: 26px; }
    .article-meta { gap: 12px; }
    .cta-card { padding: 36px 24px; }
    .cta-card h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .sticky-text { font-size: 14px; }
    .sticky-bar .btn { padding: 8px 16px; font-size: 13px; }
}
@media (max-width: 520px) {
    .logo-text { font-size: 16px; }
    .related-grid { grid-template-columns: 1fr; }
    .article-head h1 { font-size: 22px; }
    .article-content { font-size: 15px; }
    .article-pager { flex-direction: column; align-items: stretch; }
    .pager-link { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 6px;
    }
    .sticky-inner { flex-direction: column; gap: 10px; padding: 12px 40px 12px 16px; text-align: center; }
    .sticky-bar .btn { width: 100%; }
    .sticky-close { top: 8px; right: 8px; transform: none; }
}

/* roulang page: category2 */
:root {
  --primary: #1B4F8A;
  --primary-light: #2A6CB8;
  --primary-dark: #123A66;
  --accent: #38B2AC;
  --accent-light: #E6F7F6;
  --cta: #E8833A;
  --cta-hover: #D4722A;
  --bg: #F4F7FA;
  --card-bg: #FFFFFF;
  --text-main: #1A2A3A;
  --text-sub: #5A6B7B;
  --text-light: #8A9BAA;
  --border: #E2EAF2;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 2px 8px rgba(27, 79, 138, 0.06);
  --shadow-md: 0 4px 12px rgba(27, 79, 138, 0.08);
  --shadow-lg: 0 8px 20px rgba(27, 79, 138, 0.14);
  --focus-ring: 0 0 0 3px rgba(56, 178, 172, 0.2);
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-en: "Inter", "Roboto", "Helvetica Neue", Arial, sans-serif;
  --space-section: 80px;
  --space-section-md: 56px;
  --space-section-sm: 40px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

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

a:focus-visible, button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.row {
  max-width: 1200px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 12px 0 0;
  background: transparent;
}

.site-header.scrolled {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 8px 0;
  background: var(--card-bg);
  box-shadow: var(--shadow-md);
}

.header-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 20px;
  box-shadow: var(--shadow-sm);
  min-height: 68px;
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  letter-spacing: 0.5px;
  font-family: var(--font-en);
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

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

.nav-cta-btn {
  background: var(--cta);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.nav-cta-btn:hover {
  background: var(--cta-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(232, 131, 58, 0.3);
}

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

.desktop-cta {
  margin-left: auto;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
}

.nav-close {
  display: none;
}

/* Hero */
.page-hero {
  padding: 60px 0 72px;
  position: relative;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(244, 247, 250, 0.9) 0%, rgba(255, 255, 255, 0.95) 100%), url('/assets/images/backpic/back-2.webp') no-repeat center/cover;
  z-index: 0;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.page-hero .breadcrumb {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 16px;
}

.page-hero .breadcrumb a {
  color: var(--text-sub);
}

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

.page-hero .breadcrumb .sep {
  margin: 0 8px;
  color: var(--text-light);
}

.page-hero h1 {
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.page-hero .hero-desc {
  font-size: 17px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 28px;
}

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

.hero-badge {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(4px);
}

/* Product Grid */
.product-section {
  padding: var(--space-section) 0;
  background: var(--card-bg);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-header {
  margin-bottom: 48px;
  position: relative;
}

.section-header h2 {
  font-size: clamp(26px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.4;
}

.section-header p {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 680px;
  line-height: 1.8;
}

.section-header.center {
  text-align: center;
}

.section-header.center p {
  margin: 0 auto;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.product-card {
  grid-column: span 4;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(56, 178, 172, 0.4);
}

.product-card:active {
  transform: translateY(-2px);
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.product-card:hover::before {
  opacity: 1;
}

.product-card.wide {
  grid-column: span 8;
}

.product-card.tall {
  grid-column: span 5;
}

.product-card.medium {
  grid-column: span 7;
}

.product-card .card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 24px;
  color: var(--accent);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.product-card:hover .card-icon {
  background: rgba(56, 178, 172, 0.15);
}

.product-card .card-tag {
  display: inline-block;
  background: rgba(27, 79, 138, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.product-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}

.product-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 16px;
}

.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease, color 0.2s ease;
}

.card-link:hover {
  gap: 10px;
  color: var(--accent);
}

.card-link i {
  font-size: 12px;
}

/* Process Section */
.process-section {
  padding: var(--space-section) 0;
  background: var(--bg);
  position: relative;
}

.process-wrap {
  background: linear-gradient(135deg, rgba(27, 79, 138, 0.03) 0%, rgba(56, 178, 172, 0.04) 100%);
  border-radius: 16px;
  padding: 48px 40px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: step;
  margin-top: 40px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 6%;
  right: 6%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.2;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 8px;
}

.process-step .step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-en);
  counter-increment: step;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.process-step:nth-child(2) .step-num {
  border-color: var(--accent);
  color: var(--accent);
}

.process-step:nth-child(3) .step-num {
  border-color: var(--cta);
  color: var(--cta);
}

.process-step .step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.process-step .step-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* Coverage Section */
.cover-section {
  padding: var(--space-section) 0;
  background: var(--card-bg);
}

.cover-grid {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.cover-item {
  flex: 1;
  min-width: 300px;
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.cover-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(56, 178, 172, 0.3);
}

.cover-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
}

.cover-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

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

/* Contact CTA Section */
.contact-cta {
  padding: var(--space-section) 0;
  background: var(--bg);
}

.cta-panel {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 20px;
  padding: 56px 48px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 20px solid rgba(255, 255, 255, 0.06);
}

.cta-panel::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 10%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(56, 178, 172, 0.12);
}

.cta-panel-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-panel h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.4;
}

.cta-panel p {
  font-size: 15px;
  opacity: 0.85;
  line-height: 1.7;
  max-width: 480px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

.btn-warm {
  background: var(--cta);
  color: #fff !important;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  display: inline-block;
}

.btn-warm:hover {
  background: var(--cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(232, 131, 58, 0.35);
}

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

.btn-ghost-light {
  background: transparent;
  color: #fff !important;
  font-size: 15px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.6);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
  color: #fff !important;
}

/* FAQ Section */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--card-bg);
}

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

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(56, 178, 172, 0.4);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  text-align: left;
  transition: color 0.2s ease;
}

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

.faq-question .faq-icon {
  font-size: 14px;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.85;
  background: linear-gradient(to bottom, rgba(56, 178, 172, 0.04), transparent);
}

/* Sub Category Nav Section */
.subcat-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}

.subcat-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.subcat-card {
  flex: 1;
  min-width: 260px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: left;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: block;
  color: var(--text-main);
  position: relative;
  overflow: hidden;
}

.subcat-card::after {
  content: '\f054';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.25s ease, right 0.25s ease;
}

.subcat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(56, 178, 172, 0.4);
  color: var(--text-main);
}

.subcat-card:hover::after {
  opacity: 1;
  right: 16px;
}

.subcat-card .subcat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--accent);
  margin-bottom: 16px;
}

.subcat-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

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

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  font-size: 14px;
}

.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.65);
  line-height: 2.4;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 6px;
}

.footer-contact p {
  color: rgba(255, 255, 255, 0.65);
  line-height: 2;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 24px 0 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
}

/* Floating Bottom CTA */
.float-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 20px rgba(27, 79, 138, 0.12);
  padding: 12px 24px;
  transform: translateY(100%);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  display: none;
}

.float-cta.show {
  transform: translateY(0);
  display: block;
}

.float-cta-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.float-cta-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
}

.float-cta-text span {
  color: var(--text-sub);
  font-weight: 400;
  font-size: 14px;
}

.float-cta .btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cta);
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.float-cta .btn-cta:hover {
  background: var(--cta-hover);
  transform: translateY(-1px);
}

.float-cta .btn-close {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 16px;
  cursor: pointer;
  padding: 6px;
  transition: color 0.2s ease;
}

.float-cta .btn-close:hover {
  color: var(--text-main);
}

/* Responsive */
@media (max-width: 1024px) {
  .product-card,
  .product-card.wide,
  .product-card.tall,
  .product-card.medium {
    grid-column: span 6;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .process-steps::before {
    display: none;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 56px;
  }
  
  .header-card {
    padding: 10px 16px;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .desktop-cta {
    display: none;
  }
  
  .header-nav {
    position: fixed;
    top: 0;
    right: -320px;
    bottom: 0;
    width: 300px;
    background: var(--card-bg);
    padding: 60px 24px 24px;
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
    z-index: 1100;
    box-shadow: var(--shadow-lg);
    transition: right 0.35s ease;
  }
  
  .header-nav.open {
    right: 0;
  }
  
  .header-nav .nav-link {
    width: 100%;
    padding: 12px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  
  .header-nav .nav-link.active {
    border-bottom-color: transparent;
    color: var(--primary);
    background: rgba(27, 79, 138, 0.05);
    padding-left: 12px;
  }
  
  .header-nav .nav-cta-btn {
    margin-top: 16px;
    width: 100%;
    justify-content: center;
    display: flex;
  }
  
  .nav-close {
    display: block;
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 20px;
    color: var(--text-sub);
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
  }
  
  .page-hero h1 {
    font-size: 28px;
  }
  
  .page-hero .hero-desc {
    font-size: 16px;
  }
  
  .process-wrap {
    padding: 32px 20px;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .cta-panel {
    padding: 36px 24px;
  }
  
  .cta-panel-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .cta-buttons {
    width: 100%;
  }
  
  .cta-buttons .btn-warm,
  .cta-buttons .btn-ghost-light {
    flex: 1;
    text-align: center;
  }
  
  .cover-grid {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .float-cta-inner {
    justify-content: center;
  }
  
  .float-cta-text span {
    display: none;
  }
  
  .product-grid {
    gap: 16px;
  }
  
  .product-card,
  .product-card.wide,
  .product-card.tall,
  .product-card.medium {
    grid-column: span 12;
  }
  
  .hero-badges {
    flex-direction: column;
    align-items: center;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  
  .logo-text {
    font-size: 15px;
  }
  
  .logo-mark {
    font-size: 15px;
    padding: 5px 10px;
  }
  
  .page-hero h1 {
    font-size: 24px;
  }
  
  .page-hero .hero-desc {
    font-size: 15px;
  }
  
  .section-label {
    font-size: 12px;
  }
  
  .process-step {
    text-align: center;
  }
  
  .cover-item {
    flex-direction: column;
  }
  
  .cover-icon {
    margin-bottom: 8px;
  }
  
  .subcat-grid {
    flex-direction: column;
  }
  
  .subcat-card {
    min-width: 100%;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-hero-inner {
  animation: fadeInUp 0.6s ease-out both;
}

.product-section .section-header,
.cover-section .section-header,
.faq-section .section-header,
.subcat-section .section-header {
  animation: fadeInUp 0.5s ease-out both;
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
    :root {
      --primary: #1B4F8A;
      --primary-dark: #143C68;
      --primary-light: #E8F0F7;
      --accent: #38B2AC;
      --accent-dark: #2A8F8A;
      --accent-light: #E0F5F5;
      --cta: #E8833A;
      --cta-dark: #D56F28;
      --bg: #F4F7FA;
      --white: #FFFFFF;
      --text: #1A2A3A;
      --text-light: #5A6B7B;
      --border: #DDE6EC;
      --radius-card: 10px;
      --radius-btn: 6px;
      --radius-pill: 999px;
      --shadow-card: 0 4px 12px rgba(27, 79, 138, 0.08);
      --shadow-hover: 0 8px 20px rgba(27, 79, 138, 0.14);
      --font-main: "PingFang SC", "HarmonyOS Sans", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      --font-data: "Inter", "Roboto", "PingFang SC", sans-serif;
    }

    /* ========== 基础 Reset / Base ========== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-main);
      font-size: 15px;
      line-height: 1.75;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      padding-bottom: 60px;
    }
    a { text-decoration: none; color: inherit; transition: color .2s ease, background .2s ease, border .2s ease; }
    img { max-width: 100%; display: block; }
    button { border: none; background: none; cursor: pointer; font-family: inherit; }
    ul, ol { list-style: none; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    /* ========== 按钮 ========== */
    .btn {
      display: inline-block;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      line-height: 1.4;
      text-align: center;
      border: 2px solid transparent;
      transition: all .3s ease;
    }
    .btn-primary { background: var(--cta); color: #fff; }
    .btn-primary:hover { background: var(--cta-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232, 131, 58, .3); }
    .btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
    .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(27, 79, 138, .2); }
    .btn-light { background: #fff; color: var(--primary); }
    .btn-light:hover { background: var(--accent-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0, 0, 0, .15); }
    .btn-ghost { background: transparent; border: 1px solid rgba(255, 255, 255, .7); color: #fff; }
    .btn-ghost:hover { background: rgba(255, 255, 255, .14); color: #fff; transform: translateY(-2px); }

    /* ========== 导航 ========== */
    .site-header {
      position: fixed;
      top: 0; left: 0;
      width: 100%;
      z-index: 1000;
      padding: 14px 0;
      transition: all .3s ease;
      background: transparent;
    }
    .site-header.scrolled {
      padding: 8px 0;
      background: rgba(244, 247, 250, .85);
      backdrop-filter: blur(12px);
      box-shadow: 0 4px 16px rgba(27, 79, 138, .08);
    }
    .header-card {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      background: var(--white);
      border-radius: 14px;
      box-shadow: var(--shadow-card);
      padding: 12px 24px;
    }
    .header-logo a { display: flex; align-items: center; gap: 10px; }
    .logo-mark {
      width: 38px; height: 38px;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      font-weight: 800; font-size: 13px;
      letter-spacing: .5px;
      flex-shrink: 0;
    }
    .logo-text { font-size: 17px; font-weight: 700; color: var(--text); white-space: nowrap; }
    .header-nav { display: flex; align-items: center; gap: 24px; }
    .nav-link {
      font-size: 15px; color: var(--text-light);
      font-weight: 500; padding: 6px 2px;
      position: relative;
    }
    .nav-link:hover { color: var(--primary); }
    .nav-link.active { color: var(--primary); font-weight: 600; }
    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 0; right: 0; bottom: 0;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }
    .nav-cta-btn {
      display: inline-block;
      padding: 9px 20px;
      background: var(--cta);
      color: #fff;
      border-radius: var(--radius-btn);
      font-size: 14px;
      font-weight: 600;
      transition: all .3s ease;
      white-space: nowrap;
    }
    .nav-cta-btn:hover { background: var(--cta-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(232, 131, 58, .3); }
    .nav-toggle { display: none; font-size: 22px; color: var(--primary); padding: 6px; border-radius: 6px; }
    .nav-toggle:focus { outline: 2px solid rgba(56, 178, 172, .5); }
    .nav-close { display: none; }

    /* ========== 分类页 Hero ========== */
    .category-hero {
      position: relative;
      padding: 148px 0 64px;
      background:
        radial-gradient(ellipse at 82% 18%, rgba(56, 178, 172, .14) 0%, transparent 55%),
        linear-gradient(180deg, rgba(244, 247, 250, .92) 0%, rgba(255, 255, 255, .6) 100%),
        url('/assets/images/backpic/back-1.png') center 22% / cover no-repeat;
    }
    .category-hero-inner { max-width: 700px; }
    .category-hero h1 {
      font-size: 38px;
      line-height: 1.3;
      color: var(--text);
      margin: 14px 0 18px;
      letter-spacing: .5px;
    }
    .category-hero p {
      font-size: 16px;
      color: var(--text-light);
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
    .hero-metrics { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-metrics span {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(255, 255, 255, .85);
      border: 1px solid var(--border);
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      box-shadow: 0 2px 6px rgba(27, 79, 138, .05);
    }

    /* ========== 板块通用 ========== */
    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }
    .section-tag {
      display: inline-block;
      padding: 5px 16px;
      background: var(--accent-light);
      color: var(--accent-dark);
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 14px;
    }
    .section-head h2 { font-size: 28px; line-height: 1.4; color: var(--text); margin-bottom: 12px; }
    .section-head p { font-size: 15px; color: var(--text-light); }

    /* ========== 时间轴 ========== */
    .timeline-section { background: var(--white); padding: 72px 0; }
    .timeline {
      max-width: 820px;
      margin: 0 auto;
      position: relative;
    }
    .timeline::before {
      content: '';
      position: absolute;
      left: 16px;
      top: 8px;
      bottom: 8px;
      width: 2px;
      background: linear-gradient(to bottom, var(--accent), var(--primary), var(--accent));
      border-radius: 2px;
    }
    .timeline-item { position: relative; padding-left: 48px; margin-bottom: 26px; }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: 11px;
      top: 28px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 0 rgba(56, 178, 172, .35);
      transition: box-shadow .3s ease;
    }
    .timeline-item:hover::before { box-shadow: 0 0 0 6px rgba(56, 178, 172, .2); }
    .timeline-card {
      background: var(--bg);
      border-radius: var(--radius-card);
      border-left: 3px solid var(--accent);
      padding: 22px 26px;
      box-shadow: var(--shadow-card);
      transition: all .3s ease;
    }
    .timeline-card:hover { box-shadow: var(--shadow-hover); transform: translateX(5px); }
    .timeline-num { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent-dark); margin-bottom: 4px; letter-spacing: 1px; }
    .timeline-card h3 { font-size: 18px; color: var(--text); margin-bottom: 8px; }
    .timeline-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

    /* ========== 核心服务能力 ========== */
    .features-section { background: var(--bg); padding: 72px 0; }
    .feature-row {
      display: flex;
      align-items: center;
      gap: 0;
      margin-bottom: 56px;
    }
    .feature-row:last-child { margin-bottom: 0; }
    .feature-row.reverse .feature-media { order: 2; }
    .feature-row.reverse .feature-content { order: 1; }
    .feature-media {
      border-radius: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: box-shadow .3s ease;
    }
    .feature-media:hover { box-shadow: var(--shadow-hover); }
    .feature-media img { width: 100%; height: 340px; object-fit: cover; transition: transform .5s ease; }
    .feature-media:hover img { transform: scale(1.03); }
    .feature-content { padding-right: 24px; }
    .feature-row.reverse .feature-content { padding-right: 0; padding-left: 24px; }
    .feature-num {
      display: inline-block;
      padding: 4px 14px;
      background: var(--accent-light);
      color: var(--accent-dark);
      border-radius: var(--radius-pill);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .5px;
      margin-bottom: 14px;
    }
    .feature-content h3 { font-size: 24px; color: var(--text); margin-bottom: 14px; line-height: 1.4; }
    .feature-content p { font-size: 15px; color: var(--text-light); line-height: 1.8; margin-bottom: 16px; }
    .feature-data { display: flex; flex-wrap: wrap; gap: 12px; }
    .feature-data span {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    /* ========== FAQ ========== */
    .faq-section { background: var(--white); padding: 72px 0; }
    .faq-accordion { max-width: 860px; margin: 0 auto; }
    .faq-accordion .accordion-title {
      position: relative;
      display: block;
      padding: 20px 52px 20px 24px;
      background: transparent !important;
      color: var(--text) !important;
      font-size: 16px;
      font-weight: 600;
      border: none !important;
      outline: none;
    }
    .faq-accordion .accordion-item {
      background: var(--bg);
      border-radius: var(--radius-card);
      margin-bottom: 16px;
      overflow: hidden;
      transition: box-shadow .3s ease;
      box-shadow: 0 2px 8px rgba(27, 79, 138, .04);
    }
    .faq-accordion .accordion-item:hover { box-shadow: var(--shadow-card); }
    .faq-accordion .accordion-title::before,
    .faq-accordion .accordion-title::after { content: none !important; }
    .faq-accordion .accordion-title::after {
      content: '\f078' !important;
      font-family: 'Font Awesome 6 Free' !important;
      font-weight: 900 !important;
      position: absolute;
      right: 20px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--accent);
      font-size: 14px;
      transition: transform .3s ease;
    }
    .faq-accordion .accordion-item.is-active .accordion-title::after { transform: translateY(-50%) rotate(180deg); }
    .faq-accordion .accordion-content {
      background: transparent !important;
      border: none !important;
      padding: 0 24px 20px !important;
      color: var(--text-light);
      font-size: 15px;
      line-height: 1.75;
    }
    .faq-accordion .accordion-item.is-active { box-shadow: var(--shadow-card); }

    /* ========== CTA ========== */
    .cta-block { background: var(--bg); padding: 72px 0 80px; }
    .cta-panel {
      background: var(--primary);
      border-radius: 18px;
      padding: 52px 56px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      box-shadow: 0 16px 36px rgba(27, 79, 138, .22);
      position: relative;
      overflow: hidden;
    }
    .cta-panel::after {
      content: '';
      position: absolute;
      right: -40px;
      top: -40px;
      width: 200px;
      height: 200px;
      border: 2px solid rgba(255, 255, 255, .12);
      border-radius: 50%;
    }
    .cta-panel h2 { color: #fff; font-size: 28px; margin-bottom: 10px; }
    .cta-panel p { color: rgba(255, 255, 255, .85); font-size: 15px; max-width: 480px; }
    .cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

    /* ========== 页脚 ========== */
    .site-footer { background: var(--primary-dark); padding: 56px 0 0; }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-logo { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 14px; }
    .footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, .7); max-width: 330px; }
    .footer-links h4, .footer-contact h4 { color: #fff; font-size: 15px; margin-bottom: 16px; padding-bottom: 8px; position: relative; }
    .footer-links h4::after, .footer-contact h4::after {
      content: '';
      position: absolute;
      left: 0; bottom: 0;
      width: 24px; height: 2px;
      background: var(--accent);
    }
    .footer-links a { display: block; color: rgba(255, 255, 255, .7); font-size: 14px; margin-bottom: 10px; }
    .footer-links a:hover { color: #fff; }
    .footer-contact p { font-size: 14px; margin-bottom: 8px; color: rgba(255, 255, 255, .7); }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .15);
      padding: 18px 0;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 13px;
      color: rgba(255, 255, 255, .6);
    }

    /* ========== 粘性转化条 ========== */
    .sticky-cta {
      position: fixed;
      bottom: 0; left: 0;
      width: 100%;
      z-index: 999;
      background: rgba(255, 255, 255, .97);
      backdrop-filter: blur(12px);
      border-top: 1px solid rgba(27, 79, 138, .1);
      box-shadow: 0 -4px 20px rgba(27, 79, 138, .1);
      transform: translateY(120%);
      transition: transform .4s ease;
    }
    .sticky-cta.visible { transform: translateY(0); }
    .sticky-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 12px 40px 12px 0;
      position: relative;
    }
    .sticky-inner p { font-size: 15px; font-weight: 600; color: var(--text); }
    .sticky-inner .btn { padding: 10px 22px; font-size: 14px; }
    .sticky-close {
      position: absolute;
      right: 0; top: 50%;
      transform: translateY(-50%);
      color: var(--text-light);
      font-size: 16px;
      padding: 6px;
      border-radius: 6px;
    }
    .sticky-close:hover { color: var(--text); background: var(--bg); }

    /* ========== 响应式断点 ========== */
    @media (max-width: 1024px) {
      .nav-toggle { display: block; }
      .desktop-cta { display: none !important; }
      .header-nav {
        position: fixed;
        top: 0; right: -320px;
        height: 100vh;
        width: 280px;
        background: var(--white);
        box-shadow: -8px 0 30px rgba(27, 79, 138, .16);
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 28px 24px;
        z-index: 1002;
        transition: right .3s ease;
        gap: 20px;
      }
      .header-nav.open { right: 0; }
      .nav-close { display: block; position: absolute; top: 16px; right: 16px; font-size: 20px; color: var(--text-light); }
      .header-nav .nav-cta-btn { margin-top: 12px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .feature-content, .feature-row.reverse .feature-content { padding: 0 18px; }
    }

    @media (max-width: 640px) {
      body { font-size: 14px; padding-bottom: 56px; }
      .container { padding: 0 16px; }
      .header-card { padding: 10px 16px; border-radius: 12px; }
      .logo-text { font-size: 15px; }
      .category-hero { padding: 110px 0 40px; }
      .category-hero h1 { font-size: 28px; }
      .category-hero p { font-size: 15px; }
      .section-head h2 { font-size: 23px; }
      .section-head p { font-size: 14px; }
      .timeline { padding-left: 0; }
      .timeline-item { padding-left: 40px; }
      .timeline-card { padding: 18px 18px; }
      .feature-row, .feature-row.reverse { flex-direction: column; }
      .feature-row.reverse .feature-media { order: 0; }
      .feature-row.reverse .feature-content { order: 1; }
      .feature-media img { height: 220px; }
      .feature-content, .feature-row.reverse .feature-content { padding: 16px 0 0; }
      .feature-content h3 { font-size: 20px; }
      .cta-panel { padding: 32px 24px; flex-direction: column; text-align: center; }
      .cta-actions { justify-content: center; }
      .sticky-inner { padding: 8px 32px 8px 16px; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
      .sticky-inner p { font-size: 13px; }
      .sticky-inner .btn { padding: 8px 16px; font-size: 13px; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; gap: 6px; }
      .faq-accordion .accordion-title { font-size: 15px; padding: 16px 48px 16px 16px; }
      .faq-accordion .accordion-content { padding: 0 16px 16px !important; font-size: 14px; }
    }

    @media (max-width: 480px) {
      .logo-text { font-size: 14px; }
      .category-hero h1 { font-size: 24px; }
      .hero-actions .btn { padding: 10px 20px; font-size: 14px; }
    }