/* roulang page: index */
:root {
  --primary: #0E5E4A;
  --primary-hover: #0A4A3A;
  --primary-light: #E8F0EC;
  --primary-border: #C4D6CD;
  --accent: #FF6B4A;
  --accent-dark: #E85A3A;
  --dark: #0D2B26;
  --bg: #F6F4EF;
  --text: #1F2925;
  --text-secondary: #5A6B65;
  --card-bg: #FFFFFF;
  --card-border: #E2E8E4;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --shadow-card: 0 2px 12px rgba(13, 43, 38, 0.06);
  --shadow-hover: 0 12px 28px rgba(13, 43, 38, 0.14);
  --container: 1200px;
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
ul, ol {
  list-style: none;
}
input, select, textarea, button {
  font-family: inherit;
  font-size: 16px;
}
button {
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 100px 0;
}
.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(14, 94, 74, 0.2);
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14, 94, 74, 0.28);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(14, 94, 74, 0.2);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.75);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  padding: 18px 48px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(255, 107, 74, 0.32);
}
.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255, 107, 74, 0.4);
}
.btn-accent:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(255, 107, 74, 0.25);
}
.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}
.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
}
.btn-block {
  display: flex;
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.5;
}
.badge-accent {
  background: var(--accent);
  color: #fff;
}
.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary-border);
}
.badge-outline {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--primary-border);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #E5E9E6;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 34px;
  height: 34px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.brand-icon::before {
  content: '';
  width: 12px;
  height: 6px;
  border: 2px solid var(--primary);
  border-top: none;
  border-radius: 0 0 12px 12px;
  position: absolute;
  top: 8px;
}
.brand-icon::after {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  position: absolute;
  bottom: 6px;
  right: 5px;
}
.brand-name {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav .nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 6px 2px;
}
.main-nav .nav-link:hover {
  color: var(--primary);
}
.main-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav .nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.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);
}

.hero {
  position: relative;
  min-height: 75vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  background: linear-gradient(100deg, rgba(13, 43, 38, 0.82) 0%, rgba(13, 43, 38, 0.55) 60%, rgba(13, 43, 38, 0.35) 100%), url('/assets/images/backpic/back-1.webp') center 30% / cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.hero-content {
  max-width: 680px;
  position: relative;
  z-index: 2;
}
.hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  color: #fff;
}
.hero-desc {
  font-size: 18px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.9);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.hero-stat .num {
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.hero-stat .label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 4px;
}

.agenda-section {
  background: var(--bg);
}
.timeline {
  position: relative;
  padding: 20px 0 10px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(14, 94, 74, 0.25);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 12px 48px 40px;
}
.timeline-item.left {
  left: 0;
  text-align: right;
}
.timeline-item.right {
  left: 50%;
  text-align: left;
}
.timeline-item.left .timeline-card {
  margin-left: auto;
}
.timeline-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 28px 30px;
  border-top: 2px solid var(--primary);
  box-shadow: var(--shadow-card);
  text-align: left;
  max-width: 420px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.timeline-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.timeline-date {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}
.timeline-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 8px;
}
.timeline-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.timeline-place {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}
.timeline-place::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.timeline-node {
  position: absolute;
  top: 32px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
  z-index: 2;
}
.timeline-item.left .timeline-node {
  right: -12px;
}
.timeline-item.right .timeline-node {
  left: -12px;
}
.timeline-node::after {
  content: '';
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--primary);
}
.timeline-item.hot .timeline-node {
  border-color: var(--accent);
}
.timeline-item.hot .timeline-node::after {
  background: var(--accent);
}

.highlights-section {
  background: #fff;
}
.highlights-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
}
.highlights-copy h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.highlights-copy > p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
}
.highlight-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.highlight-card {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 24px;
  border: 1px solid var(--card-border);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.highlight-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.highlight-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 20px;
  font-weight: 700;
}
.highlight-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.highlight-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.highlights-visual {
  position: relative;
  padding-bottom: 56px;
}
.highlight-main-img {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  width: 100%;
  object-fit: cover;
  height: 420px;
}
.highlight-accent-img {
  position: absolute;
  right: -20px;
  bottom: 0;
  width: 200px;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 6px solid #fff;
  box-shadow: var(--shadow-hover);
}

.ticket-section {
  background: var(--bg);
}
.ticket-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}
.ticket-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.ticket-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.ticket-card.recommended {
  border-top: 2px solid var(--primary);
  transform: scale(1.02);
  box-shadow: var(--shadow-hover);
}
.ticket-card.recommended:hover {
  transform: scale(1.02) translateY(-4px);
}
.ticket-recommend {
  position: absolute;
  top: 18px;
  right: 18px;
}
.ticket-name {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 4px;
}
.ticket-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.ticket-price {
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.15;
  margin-bottom: 24px;
}
.ticket-price small {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
}
.ticket-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 0 28px;
  border-top: 1px solid var(--card-border);
  margin-top: 8px;
}
.ticket-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.55;
}
.ticket-feature::before {
  content: '✓';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}
.ticket-note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 28px;
  max-width: 760px;
  line-height: 1.6;
}

.faq-section {
  background: #fff;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid #E5E9E6;
}
.faq-item:first-child {
  border-top: 1px solid #E5E9E6;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 24px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.2s ease;
  cursor: pointer;
}
.faq-q:hover {
  color: var(--primary);
}
.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 600;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.open .faq-a {
  max-height: 320px;
}
.faq-a-inner {
  padding: 0 4px 24px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.register-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(115deg, rgba(13, 43, 38, 0.92) 0%, rgba(14, 94, 74, 0.88) 100%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  color: #fff;
}
.register-inner {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}
.register-inner h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
  margin-bottom: 14px;
}
.register-inner .register-sub {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 44px;
}
.register-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  text-align: left;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group.full {
  grid-column: 1 / -1;
}
.form-label {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
}
.form-input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #D1DAD4;
  border-radius: var(--radius-input);
  font-size: 15px;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-input::placeholder {
  color: #9AA8A0;
}
.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14, 94, 74, 0.3);
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235A6B65' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 42px;
}
.register-submit {
  grid-column: 1 / -1;
  margin-top: 8px;
}
.form-privacy {
  grid-column: 1 / -1;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  margin-top: 4px;
}

.news-section {
  background: var(--bg);
}
.news-section .section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  max-width: 100%;
  gap: 40px;
}
.news-section .section-head .section-head-text {
  max-width: 560px;
}
.latest-news-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.news-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}
.news-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--primary-border);
}
.news-item-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.news-date {
  font-size: 13px;
  color: var(--text-secondary);
}
.news-item-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.2s ease;
}
.news-item:hover .news-item-title {
  color: var(--primary);
}
.news-item-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-top: 6px;
}
.news-item-more::after {
  content: '→';
  transition: transform 0.2s ease;
}
.news-item:hover .news-item-more::after {
  transform: translateX(4px);
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: #fff;
  border: 1px dashed var(--card-border);
  border-radius: var(--radius-card);
  color: var(--text-secondary);
  font-size: 15px;
}
.news-empty::before {
  content: '📬';
  display: block;
  font-size: 36px;
  margin-bottom: 12px;
}

.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand .brand-name {
  color: #fff;
  font-size: 20px;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
  max-width: 260px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact-item::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

@media (max-width: 1023px) {
  .section {
    padding: 80px 0;
  }
  .hero h1 {
    font-size: 36px;
  }
  .timeline::before {
    left: 14px;
    transform: none;
  }
  .timeline-item,
  .timeline-item.left,
  .timeline-item.right {
    width: 100%;
    left: 0;
    padding: 12px 0 32px 48px;
    text-align: left;
  }
  .timeline-item.left .timeline-node,
  .timeline-item.right .timeline-node {
    left: 4px;
    right: auto;
  }
  .timeline-item.left .timeline-card {
    margin-left: 0;
  }
  .ticket-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ticket-card.recommended {
    transform: none;
  }
  .ticket-card.recommended:hover {
    transform: translateY(-4px);
  }
  .ticket-card:last-child {
    grid-column: 1 / -1;
  }
  .highlights-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .highlights-visual {
    padding-bottom: 48px;
  }
  .highlight-accent-img {
    right: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 60px 0;
  }
  .section-head {
    margin-bottom: 40px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .header-inner {
    gap: 12px;
  }
  .main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: 36px;
    padding: 40px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s ease, opacity 0.35s ease, visibility 0.35s ease;
    z-index: 999;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav .nav-link {
    font-size: 20px;
    font-weight: 500;
  }
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }
  .header-cta .btn-sm {
    display: none;
  }
  .hero {
    min-height: 70vh;
    padding: 110px 0 60px;
  }
  .hero h1 {
    font-size: 28px;
    line-height: 1.3;
  }
  .hero-desc {
    font-size: 16px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-stats {
    gap: 28px;
  }
  .hero-stat .num {
    font-size: 24px;
  }
  .highlight-points {
    grid-template-columns: 1fr;
  }
  .highlight-accent-img {
    display: none;
  }
  .ticket-grid {
    grid-template-columns: 1fr;
  }
  .ticket-card:last-child {
    grid-column: auto;
  }
  .register-section {
    padding: 64px 0;
  }
  .register-inner h2 {
    font-size: 26px;
  }
  .register-form {
    grid-template-columns: 1fr;
  }
  .form-group.full,
  .register-submit,
  .form-privacy {
    grid-column: 1;
  }
  .latest-news-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .news-item {
    padding: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    padding: 18px 12px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #0E5E4A;
  --primary-hover: #0A4A3A;
  --primary-light: #E8F0EC;
  --primary-border: #C4D6CD;
  --accent: #FF6B4A;
  --deep: #0D2B26;
  --bg: #F6F4EF;
  --text: #1F2925;
  --text-secondary: #5A6B65;
  --card-bg: #FFFFFF;
  --card-border: #E2E8E4;
  --line: #E5E9E6;
  --disabled: #C0C8C3;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 100px;
  --shadow-card: 0 2px 12px rgba(13,43,38,0.06);
  --shadow-hover: 0 12px 28px rgba(13,43,38,0.14);
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container: 1200px;
  --space-section: 100px;
  --space-section-mobile: 56px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

ul, ol {
  list-style: none;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  transition: all var(--transition);
  line-height: 1;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14,94,74,0.25);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(14,94,74,0.2);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  padding: 18px 48px;
  font-size: 16px;
  font-weight: 700;
}
.btn-accent:hover {
  background: #e85a3c;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255,107,74,0.3);
}
.btn-accent:active {
  transform: translateY(0);
}
.btn-accent:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-sm {
  padding: 10px 22px;
  font-size: 13px;
}
.btn-disabled, .btn:disabled {
  background: var(--disabled);
  color: #fff;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  height: 72px;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  position: relative;
  display: inline-block;
}
.brand-icon::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 6px;
  background: var(--primary);
  border-radius: 50% 50% 40% 40%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 14px;
  color: var(--text);
  padding: 8px 2px;
  position: relative;
  font-weight: 400;
  white-space: nowrap;
}
.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: -2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.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);
}

/* ===== Page Band ===== */
.page-band {
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 72px 0 56px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.breadcrumb a {
  color: var(--text-secondary);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: var(--primary-border);
}
.page-band h1 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}
.page-band .lead {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

/* ===== Split Section ===== */
.split-section {
  padding: var(--space-section) 0;
}
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split-content h2 {
  font-size: 28px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.split-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
  font-size: 16px;
}
.split-content ul {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.split-content ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.6;
}
.split-content ul li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
  margin-top: 2px;
}
.split-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
}
.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.split-media:hover img {
  transform: scale(1.03);
}

/* ===== Stats Band ===== */
.stats-band {
  background: var(--primary);
  padding: 64px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}
.stat-number {
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.stat-number span {
  color: var(--accent);
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.02em;
}

/* ===== Feature Points（错落） ===== */
.feature-points {
  padding: var(--space-section) 0;
}
.feature-head {
  margin-bottom: 48px;
}
.feature-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature-head p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
}
.feature-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 28px;
  align-items: stretch;
}
.feature-card {
  border-radius: var(--radius-card);
  padding: 36px 32px;
  transition: all var(--transition);
}
.feature-card.feature-large {
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  display: flex;
  flex-direction: column;
}
.feature-card.feature-sm {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
}
.feature-sm .feature-icon {
  background: var(--accent);
  width: 40px;
  height: 40px;
  font-size: 17px;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}
.feature-large h3 {
  font-size: 24px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Coverage Cards ===== */
.coverage-section {
  padding-bottom: var(--space-section);
}
.coverage-head {
  text-align: left;
  margin-bottom: 44px;
}
.coverage-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.coverage-head p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
}
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.coverage-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.coverage-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity var(--transition);
}
.coverage-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.coverage-card:hover::before {
  opacity: 1;
}
.cc-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  margin-bottom: 20px;
  letter-spacing: 0.03em;
}
.coverage-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}
.coverage-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  padding-bottom: var(--space-section);
}
.faq-head {
  margin-bottom: 40px;
}
.faq-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.faq-head p {
  font-size: 16px;
  color: var(--text-secondary);
}
.faq-list {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--card-border);
  padding: 0 32px;
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1.5px solid var(--primary);
  position: relative;
  flex-shrink: 0;
  transition: all var(--transition);
}
.faq-icon::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--primary);
  transform: translate(-50%, -50%);
}
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.5px;
  height: 10px;
  background: var(--primary);
  transform: translate(-50%, -50%);
  transition: transform var(--transition);
}
.faq-item.active .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}
.faq-item.active .faq-icon {
  background: var(--primary);
}
.faq-item.active .faq-icon::before,
.faq-item.active .faq-icon::after {
  background: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer {
  max-height: 260px;
  padding-bottom: 24px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 92%;
}

/* ===== CTA Band ===== */
.cta-band {
  padding-bottom: var(--space-section);
}
.cta-box {
  background: var(--primary-light);
  border: 1.5px solid var(--primary);
  border-radius: var(--radius-card);
  padding: 44px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-text h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.cta-text p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--deep);
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand-name {
  font-size: 20px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .brand-name::before {
  content: "";
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  position: relative;
  display: inline-block;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  max-width: 280px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-contact-item {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .main-nav {
    gap: 18px;
  }
  .split-grid {
    gap: 40px;
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  .feature-large {
    grid-column: span 2;
  }
  .coverage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .page-band h1 {
    font-size: 32px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .header-cta .btn-sm {
    display: none;
  }
}

@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
  }
  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-link {
    font-size: 20px;
    padding: 12px 24px;
  }
  .header-cta .btn-sm {
    display: none;
  }
  .page-band {
    padding: 48px 0 36px;
  }
  .page-band h1 {
    font-size: 26px;
  }
  .page-band .lead {
    font-size: 14px;
  }
  .split-section {
    padding: var(--space-section-mobile) 0;
  }
  .split-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .split-media {
    order: -1;
  }
  .split-grid.reverse .split-media {
    order: 2;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .stat-number {
    font-size: 34px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-large {
    grid-column: span 1;
  }
  .coverage-grid {
    grid-template-columns: 1fr;
  }
  .coverage-card {
    padding: 24px 20px;
  }
  .faq-list {
    padding: 0 20px;
  }
  .faq-question {
    font-size: 15px;
    padding: 18px 0;
  }
  .cta-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
  }
  .cta-box .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .site-footer {
    padding-top: 48px;
  }
  .footer-bottom {
    font-size: 11px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .brand-name {
    font-size: 16px;
  }
  .feature-card {
    padding: 28px 22px;
  }
  .split-content h2 {
    font-size: 22px;
  }
  .coverage-head h2,
  .feature-head h2,
  .faq-head h2 {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: article */
:root {
            --primary: #0E5E4A;
            --primary-dark: #0A4A3A;
            --primary-light: #E8F0EC;
            --primary-border: #C4D6CD;
            --accent: #FF6B4A;
            --deep: #0D2B26;
            --bg: #F6F4EF;
            --card-bg: #FFFFFF;
            --card-border: #E2E8E4;
            --text: #1F2925;
            --text-2: #5A6B65;
            --radius: 14px;
            --shadow: 0 2px 12px rgba(13, 43, 38, 0.06);
            --shadow-hover: 0 12px 28px rgba(13, 43, 38, 0.14);
            --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input, select, textarea {
            font-family: inherit;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.2s ease;
            line-height: 1;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid #fff;
            color: #fff;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-radius: 10px;
            padding: 18px 48px;
            font-size: 16px;
            font-weight: 700;
        }
        .btn-accent:hover {
            background: #E55A3A;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(255, 107, 74, 0.28);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 13px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #E5E9E6;
        }

        .header-inner {
            display: flex;
            align-items: center;
            height: 72px;
            gap: 40px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            border: 2px solid var(--primary);
            position: relative;
            flex-shrink: 0;
        }
        .brand-icon::before {
            content: '';
            position: absolute;
            top: 8px;
            left: 8px;
            width: 14px;
            height: 9px;
            border: 2px solid var(--accent);
            border-top: none;
            border-radius: 0 0 14px 14px;
        }
        .brand-icon::after {
            content: '';
            position: absolute;
            top: 8px;
            right: 7px;
            width: 0;
            height: 0;
            border-left: 4px solid transparent;
            border-right: 4px solid transparent;
            border-bottom: 6px solid var(--primary);
        }

        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--deep);
            letter-spacing: -0.01em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 6px 2px;
            position: relative;
            transition: color 0.2s;
            white-space: nowrap;
        }
        .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: -4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: auto;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
        }
        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        .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);
        }

        /* ===== Article Header ===== */
        .article-main {
            min-height: 60vh;
        }

        .article-header {
            background: var(--bg);
            border-bottom: 1px solid var(--card-border);
            padding: 56px 0 40px;
        }

        .article-header .container {
            max-width: 860px;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--text-2);
            margin-bottom: 22px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4px;
        }
        .breadcrumb a {
            color: var(--text-2);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .divider {
            color: #B0BAB5;
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: var(--text);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-header h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--deep);
            letter-spacing: -0.01em;
            margin-bottom: 18px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 14px;
            color: var(--text-2);
        }
        .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .meta-date::before {
            content: '';
            width: 16px;
            height: 16px;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%230E5E4A' stroke-width='2'%3E%3Crect x='3' y='4' width='18' height='18' rx='2'/%3E%3Cpath d='M16 2v4M8 2v4M3 10h18'/%3E%3C/svg%3E") center/contain no-repeat;
        }
        .meta-category {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 100px;
            border: 1px solid var(--primary-border);
            color: var(--primary);
            font-weight: 500;
            background: var(--primary-light);
        }

        /* ===== Article Banner ===== */
        .article-banner {
            padding: 32px 0 0;
        }
        .article-banner .container {
            max-width: 980px;
        }
        .article-banner img {
            width: 100%;
            aspect-ratio: 16/7;
            object-fit: cover;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: #E0E6E2;
        }

        /* ===== Article Body ===== */
        .article-content-section {
            padding: 48px 0 72px;
        }

        .article-body {
            max-width: 780px;
            margin: 0 auto;
            padding: 0 24px;
            font-size: 17px;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body > * + * {
            margin-top: 18px;
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--deep);
            margin-top: 48px;
            margin-bottom: 16px;
            line-height: 1.45;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--card-border);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--deep);
            margin-top: 36px;
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--deep);
            margin-top: 28px;
            margin-bottom: 10px;
        }
        .article-body p {
            margin-bottom: 24px;
            text-align: left;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 26px;
            margin-bottom: 24px;
        }
        .article-body li {
            margin-bottom: 10px;
            padding-left: 4px;
        }
        .article-body li::marker {
            color: var(--primary);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #F0F4F1;
            padding: 22px 26px;
            border-radius: 0 12px 12px 0;
            margin: 32px 0;
            color: var(--text-2);
            font-size: 16px;
            line-height: 1.8;
        }
        .article-body blockquote p {
            margin-bottom: 0;
        }
        .article-body img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 32px 0;
            background: #E0E6E2;
        }
        .article-body figure {
            margin: 32px 0;
        }
        .article-body figure img {
            margin: 0 0 10px;
        }
        .article-body figcaption {
            font-size: 13px;
            color: var(--text-2);
            text-align: center;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: opacity 0.2s;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body strong {
            color: var(--deep);
            font-weight: 700;
        }
        .article-body code {
            background: var(--primary-light);
            padding: 2px 8px;
            border-radius: 5px;
            font-size: 15px;
            color: var(--primary-dark);
        }
        .article-body pre {
            background: var(--deep);
            color: #E8EDEA;
            padding: 20px 24px;
            border-radius: 10px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 32px 0;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 32px 0;
            font-size: 15px;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--card-border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-body th {
            background: var(--primary-light);
            font-weight: 600;
            color: var(--deep);
        }
        .article-body hr {
            border: none;
            border-top: 1px solid var(--card-border);
            margin: 40px 0;
        }

        /* ===== Article Back ===== */
        .article-back {
            max-width: 780px;
            margin: 24px auto 0;
            padding: 0 24px;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--primary);
            transition: gap 0.2s;
        }
        .back-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }
        .back-link::before {
            content: '←';
            font-size: 18px;
            line-height: 1;
        }

        /* ===== Article Empty ===== */
        .article-empty {
            max-width: 680px;
            margin: 0 auto;
            padding: 80px 24px 100px;
            text-align: center;
        }
        .empty-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 24px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 36px;
        }
        .article-empty p {
            font-size: 18px;
            color: var(--text-2);
            margin-bottom: 32px;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg);
            border-top: 1px solid var(--card-border);
            padding: 72px 0;
        }
        .related-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--deep);
            margin-bottom: 36px;
            letter-spacing: -0.01em;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-img img {
            transform: scale(1.04);
        }
        .related-info {
            padding: 20px 22px 22px;
        }
        .related-info h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--deep);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-date {
            font-size: 13px;
            color: var(--text-2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--deep);
            color: #fff;
            padding: 72px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 56px;
        }
        .footer-brand .brand-name {
            font-size: 22px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            max-width: 340px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact-item {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .main-nav {
                gap: 20px;
            }
            .header-inner {
                gap: 20px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }
            .article-header h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 18px;
            }
            .nav-toggle {
                display: flex;
            }
            .header-cta .btn-sm {
                display: none;
            }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 24px 30px 32px;
                border-bottom: 1px solid var(--card-border);
                box-shadow: 0 20px 40px rgba(13, 43, 38, 0.12);
                display: none;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                font-size: 18px;
                padding: 12px 0;
                width: 100%;
            }
            .nav-link.active::after {
                bottom: 6px;
            }
            .article-header {
                padding: 40px 0 28px;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .article-header .container {
                padding: 0 18px;
            }
            .article-banner {
                padding: 20px 0 0;
            }
            .article-banner img {
                aspect-ratio: 16/10;
                border-radius: 10px;
            }
            .article-body {
                padding: 0 4px;
                font-size: 16px;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-content-section {
                padding: 36px 0 56px;
            }
            .related-section {
                padding: 56px 0;
            }
            .related-section h2 {
                font-size: 24px;
                margin-bottom: 28px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 40px;
            }
            .article-empty {
                padding: 56px 18px 72px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 12px;
            }
            .brand-name {
                font-size: 16px;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
        }

/* roulang page: category2 */
:root{
  --brand:#0E5E4A;--brand-dark:#0A4A3A;--brand-light:#E8F0EC;--brand-border:#C4D6CD;
  --accent:#FF6B4A;--dark:#0D2B26;--bg:#F6F4EF;--text:#1F2925;--text-muted:#5A6B65;
  --card-bg:#FFFFFF;--card-border:#E2E8E4;--white:#FFFFFF;
  --radius-card:14px;--radius-btn:8px;--radius-pill:100px;
  --shadow-card:0 2px 12px rgba(13,43,38,.06);--shadow-hover:0 12px 28px rgba(13,43,38,.14);
  --transition:all .2s ease;--container:1200px;--gap:28px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.site-header{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);position:sticky;top:0;z-index:100;height:72px;border-bottom:1px solid #E5E9E6}
.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{width:34px;height:34px;border-radius:50%;border:2px solid var(--brand);position:relative}
.brand-icon::before{content:"";position:absolute;width:12px;height:5px;background:var(--brand);border-radius:100px;top:14px;left:10px;box-shadow:4px 5px 0 -1.5px var(--brand-light),9px 2px 0 -1px rgba(14,94,74,.3)}
.brand-icon::after{content:"";position:absolute;width:5px;height:5px;background:var(--accent);border-radius:50%;bottom:7px;right:8px}
.brand-name{font-size:20px;font-weight:700;color:var(--dark);letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:36px}
.nav-link{font-size:15px;font-weight:500;color:var(--text);position:relative;padding:8px 2px;white-space:nowrap}
.nav-link:hover{color:var(--brand)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--brand);border-radius:100px}
.header-cta{display:flex;align-items:center;gap:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius-btn);font-size:14px;font-weight:600;padding:12px 28px;cursor:pointer;background:var(--brand);color:#fff;transition:var(--transition);text-decoration:none}
.btn:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(14,94,74,.22)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark)}
.btn-outline{background:transparent;border:1px solid var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-light);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#e95538;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,107,74,.3)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{padding:9px 20px;font-size:13px;border-radius:100px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{width:24px;height:2px;background:var(--dark);border-radius:100px;transition:var(--transition)}
.page-lead{background:var(--bg);padding:72px 0 40px;border-bottom:1px solid #e8e3da}
.breadcrumb{font-size:13px;color:var(--text-muted);margin-bottom:18px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#b9c2bd}
.page-lead h1{font-size:36px;line-height:1.25;font-weight:700;color:var(--dark);letter-spacing:-.01em;margin-bottom:16px}
.lead-desc{font-size:16px;color:var(--text-muted);max-width:820px;line-height:1.8}
.section{padding:90px 0}
.section-heading{font-size:30px;font-weight:700;color:var(--dark);letter-spacing:-.01em;margin-bottom:14px}
.section-sub{font-size:15px;color:var(--text-muted);max-width:640px;margin-bottom:44px;line-height:1.7}
.feature-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--gap);align-items:stretch}
.feature-main{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:40px;position:relative;overflow:hidden}
.feature-main::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.feature-main .tag{display:inline-flex;align-items:center;background:var(--brand-light);color:var(--brand);font-size:13px;font-weight:600;padding:5px 16px;border-radius:100px;margin-bottom:18px}
.feature-main h3{font-size:22px;font-weight:700;color:var(--dark);margin-bottom:16px}
.feature-main p{font-size:15px;color:var(--text-muted);line-height:1.75}
.feature-sides{display:flex;flex-direction:column;gap:var(--gap)}
.feature-side{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:30px;transition:var(--transition);position:relative}
.feature-side:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.feature-side .icon{width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}
.feature-side:last-child .icon{background:#fff0e9;color:var(--accent)}
.feature-side h3{font-size:18px;font-weight:600;color:var(--dark);margin-bottom:10px}
.feature-side p{font-size:14px;color:var(--text-muted);line-height:1.7}
.text-media{padding:70px 0}
.text-media-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.text-media-media{border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);position:relative}
.text-media-media img{width:100%;height:380px;object-fit:cover}
.text-media-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(13,43,38,.28));border-radius:var(--radius-card)}
.text-media-content h2{font-size:28px;font-weight:700;color:var(--dark);letter-spacing:-.01em;margin-bottom:16px}
.text-media-content p{font-size:15px;color:var(--text-muted);line-height:1.75;margin-bottom:14px}
.list-check{list-style:none;padding:0;margin:18px 0 0}
.list-check li{position:relative;padding-left:30px;margin-bottom:12px;font-size:15px;color:var(--text);line-height:1.65}
.list-check li::before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--brand);opacity:.12}
.list-check li::after{content:"";position:absolute;left:5px;top:9px;width:8px;height:5px;border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(-45deg)}
.steps-section{background:var(--dark);padding:90px 0;color:#fff}
.steps-section .section-heading{color:#fff}
.steps-section .section-sub{color:rgba(255,255,255,.7)}
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:24px}
.step-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-card);padding:30px 26px;transition:var(--transition);position:relative}
.step-card:hover{background:rgba(255,255,255,.12);transform:translateY(-3px)}
.step-num{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;margin-bottom:12px;text-transform:uppercase}
.step-card h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:10px}
.step-card p{font-size:13.5px;color:rgba(255,255,255,.75);line-height:1.7}
.faq-section{padding:90px 0}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid #e0e4e0;padding:22px 4px}
.faq-item:first-child{border-top:1px solid #e0e4e0}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);background:none;border:0;width:100%;text-align:left;padding:4px 0}
.faq-q .plus{width:26px;height:26px;border-radius:50%;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:18px;transition:var(--transition);flex-shrink:0;line-height:1}
.faq-q[aria-expanded="true"] .plus{background:var(--brand);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--text-muted);font-size:14.5px;line-height:1.75}
.faq-a-inner{padding-top:12px}
.cta-band{background:var(--brand);padding:80px 0;color:#fff;text-align:center}
.cta-band .container{max-width:700px}
.cta-band h2{font-size:30px;font-weight:700;color:#fff;margin-bottom:14px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.85);line-height:1.7;margin-bottom:30px}
.cta-band .btn-accent{border-radius:100px;padding:16px 44px;font-size:15px}
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;margin-bottom:50px}
.footer-brand .brand-name{font-size:20px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);max-width:280px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.65);transition:var(--transition)}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.6)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;color:rgba(255,255,255,.45);font-size:12.5px;text-align:center}
@media(min-width:1024px)and(max-width:1199px){
  .main-nav{gap:24px}
  .feature-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .steps-row{grid-template-columns:1fr 1fr}
  .feature-grid{grid-template-columns:1fr}
}
@media(max-width:767px){
  body{font-size:15px}
  .container{padding:0 20px}
  .site-header{height:64px}
  .header-inner{height:64px}
  .main-nav{position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:200;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:28px;transform:translateX(100%);transition:transform .3s ease;box-shadow:none}
  .main-nav.open{transform:translateX(0)}
  .nav-link{font-size:19px;font-weight:600;color:var(--text);padding:8px 16px}
  .nav-link.active::after{bottom:0;height:3px}
  .header-cta{gap:8px}
  .header-cta .btn-primary{display:none}
  .nav-toggle{display:inline-flex}
  .brand-name{font-size:18px}
  .page-lead{padding:48px 0 28px}
  .page-lead h1{font-size:26px}
  .lead-desc{font-size:14.5px}
  .section{padding:56px 0}
  .section-heading{font-size:24px;margin-bottom:10px}
  .section-sub{font-size:14px;margin-bottom:30px}
  .feature-main{padding:28px 24px}
  .feature-main h3{font-size:19px}
  .feature-side{padding:24px 22px}
  .text-media-grid{grid-template-columns:1fr;gap:28px}
  .text-media-media img{height:220px}
  .text-media-content h2{font-size:23px}
  .text-media{padding:48px 0}
  .steps-section{padding:56px 0}
  .steps-row{grid-template-columns:1fr;gap:16px}
  .step-card{padding:24px 20px}
  .faq-section{padding:56px 0}
  .faq-q{font-size:15px}
  .faq-a-inner{padding-top:10px}
  .cta-band{padding:56px 0}
  .cta-band h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-brand p{max-width:100%}
}

/* roulang page: category3 */
:root {
  --primary: #0E5E4A;
  --primary-hover: #0A4A3A;
  --primary-light: #E8F0EC;
  --primary-border: #C4D6CD;
  --accent: #FF6B4A;
  --accent-hover: #E85A3A;
  --dark: #0D2B26;
  --bg: #F6F4EF;
  --white: #FFFFFF;
  --text: #1F2925;
  --text-secondary: #5A6B65;
  --card-border: #E2E8E4;
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 100px;
  --shadow-card: 0 2px 12px rgba(13, 43, 38, 0.06);
  --shadow-hover: 0 12px 28px rgba(13, 43, 38, 0.14);
  --container-width: 1200px;
  --section-space: 100px;
  --gap: 32px;
  --transition: 0.2s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-space) 0; }
.section-head { margin-bottom: 48px; }
.section-head .section-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 30px; font-weight: 700; letter-spacing: -0.01em; color: var(--text); }
.section-head p { color: var(--text-secondary); font-size: 16px; margin-top: 12px; max-width: 620px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  transition: all var(--transition);
  line-height: 1.2;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(14, 94, 74, 0.28); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(14, 94, 74, 0.2); }
.btn-primary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-accent { background: var(--accent); color: #fff; padding: 18px 48px; border-radius: 10px; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(255, 107, 74, 0.35); }
.btn-accent:active { transform: translateY(0); }
.btn-sm { padding: 9px 20px; font-size: 13px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #E5E9E6;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  position: relative;
  flex-shrink: 0;
}
.brand-icon::before {
  content: "";
  position: absolute;
  width: 10px;
  height: 4px;
  background: var(--primary);
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 2px;
}
.brand-icon::after {
  content: "";
  position: absolute;
  width: 4px;
  height: 8px;
  background: var(--primary);
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 2px;
}
.brand-name { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
.main-nav { display: flex; align-items: center; gap: 36px; }
.main-nav .nav-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--text);
  padding: 8px 0;
  position: relative;
  transition: color var(--transition);
}
.main-nav .nav-link:hover { color: var(--primary); }
.main-nav .nav-link.active { color: var(--primary); font-weight: 600; }
.main-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.header-cta { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s ease; }
.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); }
.page-head {
  background: var(--bg);
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--card-border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-secondary); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: #B0BAB4; }
.page-head h1 { font-size: 34px; font-weight: 700; letter-spacing: -0.01em; color: var(--text); margin-bottom: 14px; }
.page-head .page-desc { font-size: 16px; color: var(--text-secondary); max-width: 680px; }
.story-section { padding: var(--section-space) 0; }
.story-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.story-copy h2 { font-size: 30px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 20px; line-height: 1.4; }
.story-copy p { color: var(--text-secondary); font-size: 16px; margin-bottom: 18px; }
.story-points { list-style: none; margin-top: 28px; }
.story-points li {
  position: relative;
  padding: 10px 0 10px 34px;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px dashed var(--card-border);
}
.story-points li:last-child { border-bottom: none; }
.story-points li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary-light);
  border: 2px solid var(--primary);
  box-sizing: border-box;
}
.story-media { position: relative; }
.story-media img {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.story-media::after {
  content: "";
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 120px;
  height: 120px;
  border: 4px solid var(--primary-light);
  border-radius: var(--radius-card);
  z-index: -1;
}
.milestone-section {
  position: relative;
  padding: var(--section-space) 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat fixed;
  color: #fff;
}
.milestone-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 43, 38, 0.94) 0%, rgba(14, 94, 74, 0.88) 100%);
}
.milestone-wrap { position: relative; z-index: 1; }
.milestone-wrap .section-head h2 { color: #fff; }
.milestone-wrap .section-head p { color: rgba(255, 255, 255, 0.72); }
.timeline { position: relative; max-width: 820px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 32px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(255, 255, 255, 0.22);
}
.timeline-item {
  position: relative;
  padding: 0 0 48px 88px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 24px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.15);
}
.timeline-item.highlight .timeline-dot { background: var(--accent); }
.timeline-year {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}
.timeline-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; color: #fff; }
.timeline-text { font-size: 14px; color: rgba(255, 255, 255, 0.7); line-height: 1.7; max-width: 560px; }
.value-section { padding: var(--section-space) 0; }
.value-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--gap);
  align-items: stretch;
}
.value-card {
  background: var(--white);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 40px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.value-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.value-card-lg {
  background: linear-gradient(145deg, var(--dark), #12352E);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  border: none;
}
.value-card-lg .value-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}
.value-card-lg .value-content { position: relative; z-index: 1; }
.value-card-lg .value-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--primary); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.value-card-lg .value-icon svg { width: 24px; height: 24px; stroke: #fff; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.value-card-lg h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.value-card-lg p { font-size: 15px; color: rgba(255, 255, 255, 0.78); line-height: 1.8; }
.value-small-list { display: grid; gap: var(--gap); }
.value-card-sm h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text); }
.value-card-sm p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }
.value-card-sm .value-sm-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.value-card-sm .value-sm-icon svg { width: 20px; height: 20px; stroke: var(--primary); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.stats-section { background: var(--primary); color: #fff; padding: 64px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; }
.stat-item .stat-num { font-size: 40px; font-weight: 700; color: var(--accent); line-height: 1.2; letter-spacing: -0.02em; }
.stat-item .stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.75); margin-top: 8px; }
.faq-section { padding: var(--section-space) 0 60px; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--card-border); }
.faq-item:first-child { border-top: 1px solid var(--card-border); }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  width: 100%;
  padding: 24px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color var(--transition);
  cursor: pointer;
}
.faq-q:hover { color: var(--primary); }
.faq-q .faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.faq-q .faq-icon::before,
.faq-q .faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.faq-q .faq-icon::before { width: 14px; height: 2px; left: 3px; top: 9px; }
.faq-q .faq-icon::after { width: 2px; height: 14px; left: 9px; top: 3px; }
.faq-item.open .faq-q .faq-icon::after { transform: scaleY(0); }
.faq-q:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}
.faq-item.open .faq-a {
  max-height: 240px;
  padding: 0 40px 24px 4px;
}
.cta-banner { padding: 0 0 var(--section-space); }
.cta-inner {
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius-card);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.cta-inner h2 { font-size: 26px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.cta-inner p { font-size: 15px; color: var(--text-secondary); max-width: 560px; }
.cta-inner .btn-accent { flex-shrink: 0; }
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.7); padding-top: 64px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand-name { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 16px; display: block; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.6); max-width: 300px; }
.footer-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 20px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.6); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; font-size: 14px; color: rgba(255, 255, 255, 0.6); }
.footer-contact-item { line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; font-size: 12px; color: rgba(255, 255, 255, 0.45); text-align: center; }
@media (max-width: 1023px) {
  .section { --section-space: 72px; }
  .main-nav { gap: 20px; }
  .story-grid { gap: 40px; }
  .story-media img { height: 340px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .cta-inner { flex-direction: column; text-align: center; padding: 40px 32px; }
  .cta-inner p { margin: 0 auto; }
}
@media (max-width: 767px) {
  .header-inner { height: 64px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 8px;
    padding: 40px 32px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 99;
    overflow-y: auto;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav .nav-link { font-size: 20px; padding: 14px 0; width: 100%; border-bottom: 1px solid var(--card-border); }
  .main-nav .nav-link.active::after { display: none; }
  .main-nav .nav-link.active { color: var(--primary); font-weight: 700; }
  .header-cta .btn-sm { display: none; }
  .page-head { padding: 48px 0 40px; }
  .page-head h1 { font-size: 28px; }
  .story-section { padding: 56px 0; }
  .story-grid { grid-template-columns: 1fr; gap: 32px; }
  .story-copy h2 { font-size: 24px; }
  .story-media img { height: 260px; }
  .milestone-section { padding: 56px 0; background-attachment: scroll; }
  .timeline::before { left: 16px; }
  .timeline-item { padding-left: 56px; }
  .timeline-dot { left: 8px; width: 16px; height: 16px; }
  .timeline-title { font-size: 18px; }
  .value-section { padding: 56px 0; }
  .value-layout { grid-template-columns: 1fr; }
  .value-card { padding: 28px; }
  .value-card-lg { min-height: 320px; }
  .stats-section { padding: 48px 0; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .stat-item .stat-num { font-size: 32px; }
  .faq-section { padding: 56px 0 40px; }
  .faq-q { font-size: 15px; padding: 20px 0; }
  .cta-banner { padding: 0 0 56px; }
  .cta-inner { padding: 32px 24px; }
  .cta-inner h2 { font-size: 22px; }
  .btn-accent { width: 100%; padding: 16px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px 24px; padding-bottom: 40px; }
  .footer-grid .footer-brand { grid-column: 1 / -1; }
}