/* roulang page: index */
:root {
  --primary: #0D7377;
  --primary-dark: #0A5A5E;
  --primary-light: #E8F4F3;
  --primary-lighter: #EFF7F6;
  --accent: #F59E0B;
  --accent-hover: #D98B06;
  --accent-light: #FEF3E2;
  --bg: #F5F9F8;
  --card-bg: #FFFFFF;
  --text: #1F2A2E;
  --text-light: #5B6B70;
  --text-mute: #849399;
  --border: #E2E8E8;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow: 0 2px 8px rgba(15, 60, 70, 0.06);
  --shadow-lg: 0 6px 20px rgba(15, 60, 70, 0.10);
  --footer-bg: #1E292D;
  --footer-text: #A7B4B8;
  --success: #2F9E6E;
  --error: #D64545;
  --warning: #E8930C;
  --container: 1200px;
  --gap: 24px;
  --section-space: 80px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  line-height: 1.8;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
body.nav-open {
  overflow: hidden;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--section-space) 0;
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(24px, 2.5vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}
.section-desc {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
  margin-top: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 26px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.22s ease;
  white-space: nowrap;
  border: 1.5px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(13, 115, 119, 0.25);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.2);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.25);
  transform: translateY(-1px);
}
.btn-accent:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}
.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}
.btn-sm {
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-brand-row {
  border-bottom: 1px solid rgba(226, 232, 232, 0.6);
}
.header-brand-row-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}
.brand-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}
.brand-mark::before {
  content: '';
  width: 14px;
  height: 9px;
  border: 2px solid #fff;
  border-top: 0;
  border-radius: 0 0 14px 14px;
  transform: translateY(1px);
}
.brand-mark::after {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  position: absolute;
  top: -2px;
  right: 4px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s;
}
.nav-toggle:hover {
  border-color: var(--primary);
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  margin: 2px 0;
  border-radius: 2px;
  transition: background 0.2s;
}
.header-nav-row {
  background: #fff;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 44px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  transition: all 0.2s;
  position: relative;
}
.nav-link:hover {
  background: rgba(13, 115, 119, 0.08);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(31, 42, 46, 0.4);
  z-index: 90;
}
body.nav-open .nav-overlay {
  display: block;
}

/* Hero */
.hero {
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(239, 247, 246, 0.92)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-light);
  color: var(--accent-hover);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}
.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}
.hero-title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 18px;
}
.hero-title .highlight {
  color: var(--primary);
  position: relative;
}
.hero-subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-light);
  max-width: 480px;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}
.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--text-mute);
}
.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-trust-item::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
}
.hero-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.hero-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}
.hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 115, 119, 0.18), transparent 60%);
  border-radius: var(--radius);
}

/* Features */
.features {
  background: var(--bg);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.feature-card {
  padding: 30px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card-bg);
  transition: all 0.25s ease;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 115, 119, 0.35);
}
.feature-card-1 {
  background: var(--primary-light);
  border-color: transparent;
}
.feature-card-2 {
  border-left: 4px solid var(--primary);
}
.feature-card-3::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, transparent 50%, var(--accent-light) 50%);
  border-radius: 0 var(--radius) 0 12px;
}
.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.feature-card-1 .feature-icon {
  background: #fff;
}
.feature-card-2 .feature-icon {
  background: var(--primary-light);
}
.feature-card-3 .feature-icon {
  background: var(--accent-light);
}
.feature-icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.feature-num {
  position: absolute;
  top: 22px;
  right: 20px;
  font-size: 32px;
  font-weight: 700;
  color: rgba(13, 115, 119, 0.14);
  font-family: "DIN Alternate", "Bahnschrift", sans-serif;
  line-height: 1;
}
.feature-card-3 .feature-num {
  color: rgba(245, 158, 11, 0.25);
}
.feature-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.feature-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
}

/* How it works */
.how-it-works {
  background: var(--card-bg);
}
.how-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.how-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.how-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.steps-list {
  display: grid;
  gap: 24px;
}
.step-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  transition: all 0.25s ease;
}
.step-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.step-icon-box {
  position: relative;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-icon-box svg {
  width: 22px;
  height: 22px;
  stroke: var(--primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.step-num {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
}
.step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.step-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* News */
.news-section {
  background: var(--bg);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.news-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.news-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 115, 119, 0.3);
}
.news-card:hover::before {
  transform: scaleX(1);
}
.news-card-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.news-card-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}
.news-card:hover .news-card-title {
  color: var(--primary);
}
.news-card-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 18px;
}
.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-mute);
}
.news-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all 0.2s;
}
.news-card:hover .news-arrow {
  background: var(--primary);
  color: #fff;
}
.news-empty {
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 56px 24px;
  text-align: center;
  color: var(--text-mute);
}
.news-empty-icon {
  display: block;
  font-size: 36px;
  line-height: 1;
  margin-bottom: 12px;
  opacity: 0.5;
}
.news-empty p {
  font-size: 14px;
}

/* Stats */
.stats-section {
  background: var(--card-bg);
}
.stats-card {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 16px;
  padding: 52px 48px;
  color: #fff;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(13, 115, 119, 0.25);
}
.stat-num {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.2;
  font-family: "DIN Alternate", "Bahnschrift", sans-serif;
}
.stat-suffix {
  font-size: 18px;
  font-weight: 500;
  margin-left: 2px;
}
.stat-label {
  font-size: 14px;
  opacity: 0.85;
  margin-top: 6px;
}

/* FAQ */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: all 0.25s ease;
}
.faq-item.active {
  border-color: rgba(13, 115, 119, 0.4);
  box-shadow: var(--shadow);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  text-align: left;
  transition: color 0.2s;
  background: #fff;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-item.active .faq-question {
  color: var(--primary);
}
.faq-toggle {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  transition: transform 0.25s ease, background 0.25s ease;
  flex-shrink: 0;
  line-height: 1;
}
.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-light);
}

/* CTA */
.cta-banner {
  background: linear-gradient(120deg, var(--primary), #0E5F63);
  padding: 64px 24px;
  text-align: center;
  color: #fff;
}
.cta-title {
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-desc {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: 28px;
}

/* Footer */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 40px;
}
.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--footer-text);
}
.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col-list {
  display: grid;
  gap: 10px;
}
.footer-col-list a {
  font-size: 14px;
  color: var(--footer-text);
  transition: color 0.2s;
}
.footer-col-list a:hover {
  color: #fff;
}
.footer-contact p {
  font-size: 14px;
  line-height: 2;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0;
  font-size: 12px;
  color: #7A8A8F;
  text-align: center;
}

/* Fixed Bar */
.fixed-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(15, 60, 70, 0.08);
  z-index: 80;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}
.fixed-bar.visible {
  transform: translateY(0);
}
.fixed-bar-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
}
.fixed-bar-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}
.fixed-bar-text span {
  color: var(--primary);
}

/* Responsive */
@media (max-width: 991px) {
  :root {
    --section-space: 56px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero {
    padding: 56px 0;
  }
  .how-inner {
    grid-template-columns: 1fr;
  }
  .how-image {
    order: -1;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-card {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    padding: 40px 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }
  .header-brand-row-inner {
    height: 56px;
  }
  .brand {
    font-size: 17px;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .header-nav-row {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: #fff;
    z-index: 200;
    transition: right 0.3s ease;
    padding: 24px;
    border-left: 1px solid var(--border);
    box-shadow: -8px 0 24px rgba(15, 60, 70, 0.08);
  }
  body.nav-open .header-nav-row {
    right: 0;
  }
  .site-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    height: auto;
  }
  .nav-link {
    font-size: 15px;
    height: 44px;
    padding: 0 16px;
  }
  .nav-link.active::after {
    display: none;
  }
  .hero {
    padding: 40px 0;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 22px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-image img {
    height: 240px;
  }
  .features-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }
  .stats-card {
    grid-template-columns: 1fr 1fr;
    padding: 32px 20px;
  }
  .step-item {
    padding: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cta-banner {
    padding: 40px 16px;
  }
  .fixed-bar-inner {
    padding: 8px 16px;
    min-height: 52px;
  }
  .fixed-bar-text {
    font-size: 13px;
  }
  .fixed-bar-text span {
    display: block;
    font-size: 12px;
  }
  .fixed-bar .btn {
    height: 38px;
    padding: 0 18px;
    font-size: 14px;
  }
}

@media (max-width: 420px) {
  .stats-card {
    grid-template-columns: 1fr;
  }
  .stat-num {
    font-size: 32px;
  }
  .step-item {
    flex-direction: column;
    gap: 12px;
  }
}

/* roulang page: article */
:root {
  --primary: #0D7377;
  --primary-dark: #0A5D60;
  --primary-light: #E8F4F3;
  --accent: #F59E0B;
  --accent-light: #FEF3E2;
  --text: #1F2A2E;
  --text-light: #5B6B70;
  --text-lighter: #849399;
  --border: #E2E8E8;
  --bg: #F8FAFA;
  --card-bg: #FFFFFF;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 2px 8px rgba(15, 60, 70, 0.06);
  --shadow-hover: 0 6px 20px rgba(15, 60, 70, 0.10);
  --container: 1200px;
  --content-max: 760px;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 999px;
  line-height: 1.4;
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-brand-row { padding: 14px 0; }
.header-brand-row-inner { display: flex; align-items: center; justify-content: space-between; }
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}
.brand:hover { color: var(--primary); }
.brand-mark {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #14A09A 100%);
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 2px solid #fff;
  border-radius: 4px;
  opacity: 0.8;
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 0 24px;
  height: 44px;
  border-radius: 8px;
  transition: all .2s ease;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(13, 115, 119, 0.25);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-primary:focus-visible {
  outline: 2px solid rgba(13, 115, 119, 0.4);
  outline-offset: 2px;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); }
.btn-sm { height: 36px; padding: 0 18px; font-size: 14px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s ease;
}
.header-nav-row { border-top: 1px solid #F0F4F4; background: #fff; }
.site-nav { display: flex; gap: 6px; padding: 8px 0; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.site-nav::-webkit-scrollbar { display: none; }
.nav-link {
  display: inline-block;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  border-radius: 999px;
  white-space: nowrap;
  transition: all .2s ease;
}
.nav-link:hover { background: rgba(13, 115, 119, 0.08); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; }
/* Breadcrumb */
.article-breadcrumb {
  padding: 24px 0 8px;
  font-size: 14px;
  color: var(--text-lighter);
}
.article-breadcrumb a { color: var(--text-lighter); }
.article-breadcrumb a:hover { color: var(--primary); }
.article-breadcrumb .sep { margin: 0 8px; color: #C4CFD1; }
.article-breadcrumb .current { color: var(--text-light); }
/* Article Main */
.article-main { padding: 16px 0 56px; }
.article-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 48px 56px;
  max-width: var(--content-max);
  margin: 0 auto;
  border: 1px solid #F0F4F4;
}
.article-header { margin-bottom: 32px; }
.article-title {
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  font-size: 14px;
  color: var(--text-lighter);
  padding-bottom: 20px;
  border-bottom: 1px solid #F0F2F2;
}
.article-meta .dot { color: #C4CFD1; }
.article-body {
  line-height: 1.9;
  color: var(--text);
  font-size: 16px;
}
.article-body p { margin-bottom: 1.5em; }
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 12px;
  line-height: 1.4;
}
.article-body ul, .article-body ol { margin: 16px 0 24px; padding-left: 24px; }
.article-body ul li { list-style: disc; margin-bottom: 8px; }
.article-body ol li { list-style: decimal; margin-bottom: 8px; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: #F0F7F6;
  padding: 20px 24px;
  margin: 24px 0;
  border-radius: 0 8px 8px 0;
  color: var(--text-light);
  font-size: 15px;
}
.article-body img {
  width: 100%;
  border-radius: 10px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover { color: var(--primary-dark); }
.article-body strong { font-weight: 600; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-body table th, .article-body table td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-body table th { background: var(--primary-light); font-weight: 600; }
/* Article Empty */
.article-empty {
  text-align: center;
  padding: 80px 24px;
}
.article-empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 28px;
}
.article-empty p { font-size: 18px; color: var(--text-light); margin-bottom: 20px; }
/* Article Actions */
.article-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 24px;
  margin-top: 32px;
  border-top: 1px solid #F0F2F2;
}
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--text-light);
  background: #F5F8F8;
  border: 1px solid #E8EEEE;
  transition: all .2s ease;
  line-height: 1.4;
}
.action-btn:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary-light); }
.action-btn svg { width: 16px; height: 16px; }
/* Related Section */
.related-section { padding: 48px 0 64px; background: #fff; }
.related-heading { text-align: center; margin-bottom: 40px; }
.related-heading h2 { font-size: 28px; font-weight: 700; color: var(--text); }
.related-heading p { font-size: 15px; color: var(--text-lighter); margin-top: 8px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}
.related-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all .3s ease;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.related-card a { display: block; color: inherit; }
.related-card-img { height: 180px; overflow: hidden; background: #EDF3F2; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-card-img img { transform: scale(1.04); }
.related-card-body { padding: 20px 22px 22px; }
.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin: 10px 0 8px;
  color: var(--text);
  transition: color .2s ease;
}
.related-card:hover .related-card-body h3 { color: var(--primary); }
.related-card-body p { font-size: 13px; color: var(--text-light); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-link { font-size: 13px; font-weight: 600; color: var(--primary); }
/* CTA */
.cta-banner {
  background: var(--primary);
  padding: 56px 24px;
  text-align: center;
  color: #fff;
}
.cta-banner h2 { font-size: 26px; font-weight: 700; margin-bottom: 10px; }
.cta-banner p { font-size: 15px; opacity: 0.85; margin-bottom: 24px; }
.btn-white {
  background: #fff;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  padding: 0 32px;
  height: 46px;
  border-radius: 8px;
  font-size: 15px;
  transition: all .2s ease;
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
/* Footer */
.site-footer {
  background: #1E292D;
  color: #A7B4B8;
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand-desc { font-size: 14px; line-height: 1.7; color: #8A9A9E; }
.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col-list li { margin-bottom: 10px; }
.footer-col-list a { color: #A7B4B8; font-size: 14px; transition: color .2s ease; }
.footer-col-list a:hover { color: #fff; }
.footer-contact p { font-size: 14px; color: #A7B4B8; margin-bottom: 10px; line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: #7A8A8F;
}
/* Back to top */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 80px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .3s ease;
  z-index: 90;
  font-size: 18px;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); }
/* Responsive */
@media (max-width: 991px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); max-width: 720px; }
}
@media (max-width: 767px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .site-header { position: sticky; top: 0; }
  .header-brand-row { padding: 12px 0; }
  .nav-toggle { display: flex; }
  .header-nav-row {
    display: none;
    border-top: 1px solid var(--border);
    background: #fff;
    box-shadow: 0 8px 24px rgba(15,60,70,0.06);
    max-height: 60vh;
    overflow-y: auto;
  }
  .header-nav-row.open { display: block; }
  .site-nav { flex-direction: column; padding: 12px 0; gap: 2px; }
  .nav-link { display: block; padding: 12px 16px; border-radius: 8px; white-space: normal; }
  .article-card { padding: 32px 24px; border-radius: 12px; }
  .article-title { font-size: 26px; }
  .article-meta { gap: 8px; font-size: 13px; flex-wrap: wrap; }
  .related-grid { grid-template-columns: 1fr; max-width: 400px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-banner { padding: 40px 16px; }
  .cta-banner h2 { font-size: 22px; }
  .back-to-top { right: 16px; bottom: 72px; width: 40px; height: 40px; }
}
@media (max-width: 420px) {
  .article-card { padding: 24px 16px; }
  .article-title { font-size: 22px; }
  .article-meta { gap: 6px; font-size: 12px; }
}

/* roulang page: category1 */
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: #F8FAFA;
  color: #1F2A2E;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

:root {
  --primary: #0D7377;
  --primary-dark: #0A5C60;
  --primary-light: #E8F4F3;
  --accent: #F59E0B;
  --accent-light: #FEF3E2;
  --text: #1F2A2E;
  --text-secondary: #5B6B70;
  --text-muted: #849399;
  --border: #E2E8E8;
  --bg: #F8FAFA;
  --bg-alt: #EFF7F6;
  --card-bg: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(15, 60, 70, 0.06);
  --shadow-lg: 0 6px 20px rgba(15, 60, 70, 0.10);
  --header-height: 104px;
  --container-width: 1200px;
}

body { padding-top: var(--header-height); }

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  gap: 6px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: #0F868B;
  box-shadow: 0 4px 14px rgba(13, 115, 119, 0.25);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-primary:focus-visible {
  outline: 2px solid rgba(13, 115, 119, 0.4);
  outline-offset: 2px;
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary-light);
  border-color: var(--primary-dark);
}
.btn-outline:active { transform: translateY(1px); }
.btn-outline:focus-visible {
  outline: 2px solid rgba(13, 115, 119, 0.3);
  outline-offset: 2px;
}
.btn-white {
  background: #fff;
  color: var(--primary-dark);
}
.btn-white:hover {
  background: #F0FDF9;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
}
.btn-sm { height: 36px; padding: 0 18px; font-size: 14px; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-brand-row {
  border-bottom: 1px solid #F0F4F4;
}
.header-brand-row-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  white-space: nowrap;
}
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 60%, #14A1A6 100%);
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 8px;
  background: var(--bg-alt);
}
.nav-toggle span {
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: 0.3s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.header-nav-row {
  background: #fff;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 44px;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all 0.2s ease;
}
.nav-link:hover {
  background: rgba(13, 115, 119, 0.08);
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 18px;
  right: 18px;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--primary);
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.92) 0%, rgba(248, 250, 250, 0.78) 45%, rgba(232, 244, 243, 0.55) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 72px 0 64px;
}
.banner-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--primary); font-weight: 500; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .separator { color: #B0BCBF; }
.page-title {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
}
.page-title span { color: var(--primary); }
.page-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 28px;
}
.banner-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.banner-visual {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #fff;
}
.banner-visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* ===== Section ===== */
.section {
  padding: 72px 0;
}
.section-alt { background: var(--bg-alt); }
.section-header {
  margin-bottom: 40px;
  max-width: 680px;
}
.section-title {
  font-size: clamp(24px, 2.5vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 10px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Login Methods ===== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.method-card {
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
  background: var(--card-bg);
}
.method-card.feature-teal {
  background: var(--primary-light);
  border-color: transparent;
}
.method-card.feature-outline {
  border-left: 4px solid var(--primary);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.method-card.feature-accent {
  position: relative;
  background: #fff;
  overflow: hidden;
}
.method-card.feature-accent::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), transparent 70%);
  border-radius: 0 0 0 72px;
}
.method-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.method-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  margin-bottom: 20px;
  font-size: 22px;
  font-weight: 700;
}
.method-card.feature-accent .method-icon { background: var(--accent); }
.method-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(13, 115, 119, 0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.method-title {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.method-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Steps ===== */
.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.step-item {
  position: relative;
  padding-top: 12px;
}
.step-item::before {
  content: "";
  position: absolute;
  top: 30px;
  left: 44px;
  right: -28px;
  height: 2px;
  border-top: 2px dashed #B8D5D3;
}
.step-item:last-child::before { display: none; }
.step-icon {
  position: relative;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-light);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 18px;
}
.step-num {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 240px;
}

/* ===== Two Column Layout ===== */
.category-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
}
.layout-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 120px;
}
.side-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.side-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bg-alt);
}
.side-list { display: flex; flex-direction: column; gap: 10px; }
.side-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.2s ease;
  background: #F8FAFA;
}
.side-list a::before {
  content: "→";
  color: var(--primary);
  font-weight: 700;
}
.side-list a:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.side-note {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  padding: 14px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 13px;
  color: #7C5A12;
  line-height: 1.7;
}
.side-cta {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px 22px;
  text-align: center;
}
.side-cta h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.side-cta p {
  font-size: 14px;
  opacity: 0.85;
  margin-bottom: 18px;
  line-height: 1.6;
}
.side-cta .btn {
  width: 100%;
  background: #fff;
  color: var(--primary-dark);
}
.side-cta .btn:hover { background: #F0FDF9; }

/* ===== Content List ===== */
.content-list { display: flex; flex-direction: column; gap: 16px; }
.content-card {
  display: flex;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.25s ease;
}
.content-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
}
.content-card-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.content-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.content-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.content-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.content-card-meta .meta-tag {
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 600;
}

/* ===== Notice Block ===== */
.notice-block {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-top: 36px;
}
.notice-block h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text);
}
.notice-block ul { display: flex; flex-direction: column; gap: 8px; }
.notice-block li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}
.notice-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border 0.3s ease, box-shadow 0.3s ease;
}
.faq-item:hover { border-color: #B8D5D3; }
.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  text-align: left;
  gap: 16px;
  transition: color 0.25s;
}
.faq-item.active .faq-question { color: var(--primary); font-weight: 600; }
.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer-inner {
  padding: 0 22px 22px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid #F0F4F4;
  padding-top: 14px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 56px 0 72px;
}
.cta-box {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 16px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}
.cta-box::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}
.cta-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}
.cta-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
  background: #1E292D;
  color: #A7B4B8;
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #8FA0A5;
  max-width: 320px;
}
.footer-col-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.footer-col-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  color: #A7B4B8;
}
.footer-col-list a:hover { color: #fff; }
.footer-contact p {
  font-size: 14px;
  color: #A7B4B8;
  margin-bottom: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: #7A8A8F;
}

/* ===== Back To Top ===== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 999;
}
.back-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover { background: var(--primary-dark); }

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .banner-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .banner-visual img { height: 240px; }
  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-wrap {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }
  .step-item::before { display: none; }
  .category-layout {
    grid-template-columns: 1fr;
  }
  .layout-sidebar {
    position: static;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  body { padding-top: 60px; }
  .header-brand-row-inner { height: 60px; }
  .header-nav-row {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 4px 16px rgba(15, 60, 70, 0.10);
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  .header-nav-row.open {
    transform: translateY(0);
    opacity: 1;
  }
  .site-nav {
    height: auto;
    padding: 14px 0;
    gap: 4px;
  }
  .nav-link {
    height: 42px;
    padding: 0 16px;
    font-size: 15px;
  }
  .nav-link.active::after { display: none; }
  .nav-toggle { display: flex; }
  .page-banner { padding: 44px 0 40px; }
  .banner-visual img { height: 180px; }
  .method-grid { grid-template-columns: 1fr; }
  .steps-wrap { grid-template-columns: 1fr; }
  .cta-box { padding: 40px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .btn { height: 44px; padding: 0 16px; }
  .content-card { flex-direction: column; }
  .back-top { right: 16px; bottom: 16px; }
}

@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .brand { font-size: 17px; }
  .header-actions .btn { padding: 0 12px; font-size: 13px; }
  .page-title { font-size: 28px; }
  .cta-title { font-size: 22px; }
}