/* roulang page: index */
:root {
  --primary: #1F4D2E;
  --primary-dark: #173A22;
  --primary-light: #2B6B3F;
  --accent: #E8752A;
  --accent-dark: #D1601A;
  --bg: #F5F7F4;
  --bg-alt: #EAF0E9;
  --card: #FFFFFF;
  --text: #1C211D;
  --text-secondary: #5C655F;
  --text-muted: #8B938E;
  --border: #E3E8E4;
  --success: #2E7D32;
  --warning: #B26A00;
  --error: #B3261E;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(27, 45, 28, 0.06);
  --shadow-hover: 0 8px 30px rgba(27, 45, 28, 0.12);
  --container: 1200px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 1px solid var(--primary);
}

.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 117, 42, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(232, 117, 42, 0.3);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(232, 117, 42, 0.5);
  outline-offset: 2px;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(31, 77, 46, 0.2);
}

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

.btn-outline:focus-visible {
  outline: 3px solid rgba(31, 77, 46, 0.35);
  outline-offset: 2px;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(232, 117, 42, 0.3);
}

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

.btn-accent:focus-visible {
  outline: 3px solid rgba(232, 117, 42, 0.5);
  outline-offset: 2px;
}

.btn-small {
  padding: 10px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 17px;
}

.btn-light {
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  color: #fff;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-lg);
  font-size: 12px;
  font-weight: 500;
  background: var(--primary);
  color: #fff;
  letter-spacing: 0.02em;
}

/* 区块标题 */
.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  background: rgba(232, 117, 42, 0.1);
  padding: 6px 16px;
  border-radius: var(--radius-lg);
}

.section-head h2 {
  font-size: 32px;
  line-height: 1.25;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-head p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Header */
.site-header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(23, 58, 34, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  position: relative;
}

.header-mobile-row {
  display: none;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 16px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.nav-left {
  justify-content: flex-end;
}

.nav-right {
  justify-content: flex-start;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  position: relative;
}

.nav-list a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-list a.active {
  color: #fff;
  font-weight: 600;
}

.nav-list a.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-list a.btn {
  padding: 10px 22px;
  border-radius: var(--radius-sm);
}

.site-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
  white-space: nowrap;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: opacity var(--transition);
  flex-shrink: 0;
}

.site-logo:hover {
  color: #fff;
  opacity: 0.9;
}

.desktop-logo {
  order: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  border-radius: var(--radius-sm);
  z-index: 1002;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-toggle:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.5);
  outline-offset: 2px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #EAF0E9 0%, #F5F7F4 55%, #FDFDF9 100%);
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 117, 42, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(232, 117, 42, 0.1);
  padding: 8px 18px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.hero-eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.hero h1 {
  font-size: 40px;
  line-height: 1.2;
  color: var(--text);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  word-break: break-word;
}

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

.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-item strong {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.stat-item span {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
  z-index: 2;
}

.hero-img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  position: relative;
}

.hero-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(31, 77, 46, 0.05) 0%, rgba(31, 77, 46, 0.15) 100%);
}

.hero-img-wrap img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  box-shadow: var(--shadow-hover);
  backdrop-filter: blur(8px);
  z-index: 3;
  max-width: 240px;
}

.hero-badge strong {
  display: block;
  font-size: 15px;
  color: var(--text);
  margin-bottom: 4px;
}

.hero-badge span {
  font-size: 13px;
  color: var(--text-secondary);
}

/* 三步上手 */
.steps-section {
  padding: 72px 0;
  background: var(--card);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(31, 77, 46, 0.25);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.step-item h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}

.step-item p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 案例 */
.cases-section {
  padding: 72px 0;
  background: var(--bg);
}

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

.case-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.case-cover {
  overflow: hidden;
  position: relative;
}

.case-cover img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.case-card:hover .case-cover img {
  transform: scale(1.05);
}

.case-body {
  padding: 20px 20px 24px;
}

.case-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.case-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* FAQ */
.faq-section {
  padding: 72px 0;
  background: var(--card);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.faq-item.active {
  border-color: rgba(31, 77, 46, 0.3);
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: transparent;
  gap: 16px;
  transition: color var(--transition);
}

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

.faq-question:focus-visible {
  outline: 3px solid rgba(31, 77, 46, 0.25);
  outline-offset: -3px;
}

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--primary);
  transition: transform var(--transition);
  border-radius: 2px;
}

.faq-icon::before {
  width: 2px;
  height: 18px;
  top: 1px;
  left: 9px;
}

.faq-icon::after {
  width: 18px;
  height: 2px;
  top: 9px;
  left: 1px;
}

.faq-item.active .faq-icon::before {
  transform: rotate(90deg);
  opacity: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-item.active .faq-answer-inner {
  padding-bottom: 20px;
}

/* CTA */
.cta-section {
  padding: 88px 0;
  background: linear-gradient(rgba(31, 77, 46, 0.92), rgba(23, 58, 34, 0.95)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  position: relative;
}

.cta-inner {
  text-align: center;
  max-width: 720px;
}

.cta-inner h2 {
  font-size: 36px;
  line-height: 1.25;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.cta-inner p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 资讯 */
.news-section {
  padding: 72px 0;
  background: var(--bg);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(31, 77, 46, 0.2);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.news-meta time {
  font-size: 13px;
  color: var(--text-muted);
}

.news-card h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 12px;
}

.news-card h3 a {
  color: var(--text);
  transition: color var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card h3 a:hover {
  color: var(--accent);
}

.news-card > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: color var(--transition), gap var(--transition);
}

.read-more:hover {
  color: var(--accent);
  gap: 10px;
}

.news-empty {
  grid-column: 1 / -1;
  padding: 60px 20px;
  text-align: center;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

.news-empty p {
  font-size: 16px;
  color: var(--text-secondary);
}

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

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

.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  display: inline-block;
  margin-bottom: 16px;
}

.footer-brand .footer-logo:hover {
  color: var(--accent);
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.7;
  opacity: 0.8;
  max-width: 320px;
}

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

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-contact p {
  font-size: 15px;
  line-height: 1.7;
  opacity: 0.8;
  max-width: 240px;
}

.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-copyright a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-copyright a:hover {
  color: var(--accent);
}

/* 响应式 */
@media (max-width: 1023px) {
  .site-header {
    position: sticky;
  }

  .header-inner {
    justify-content: space-between;
    min-height: 64px;
  }

  .header-mobile-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }

  .desktop-logo {
    display: none !important;
  }

  .main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
    flex: none;
  }

  .nav-left,
  .nav-right {
    justify-content: center;
  }

  .nav-list a {
    font-size: 20px;
    padding: 14px 28px;
    color: rgba(255, 255, 255, 0.9);
  }

  .nav-list a.active::after {
    left: 28px;
    right: 28px;
    bottom: 8px;
  }

  .nav-list a.btn {
    font-size: 16px;
    padding: 12px 28px;
    margin-top: 8px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 64px 0;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-stats {
    gap: 24px;
  }

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

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

@media (max-width: 767px) {
  .container {
    padding: 0 16px;
  }

  .section-head {
    margin-bottom: 36px;
  }

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

  .hero {
    padding: 48px 0;
  }

  .hero h1 {
    font-size: 28px;
    line-height: 1.3;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .hero-stats {
    gap: 16px;
    flex-direction: column;
  }

  .steps-section,
  .cases-section,
  .faq-section,
  .cta-section,
  .news-section {
    padding: 48px 0;
  }

  .step-item {
    padding: 32px 24px;
  }

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

  .cta-inner h2 {
    font-size: 26px;
  }

  .cta-actions {
    flex-direction: column;
  }

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

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

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

  .footer-copyright {
    font-size: 13px;
  }
}

@media (max-width: 520px) {
  .hero-img-wrap img {
    aspect-ratio: 4 / 3;
  }

  .news-card {
    padding: 20px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 15px;
  }

  .faq-answer-inner {
    padding: 0 18px 16px;
    font-size: 14px;
  }

  .section-tag {
    font-size: 12px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #1F4D2E;
            --primary-dark: #163A20;
            --primary-light: #2C6B3F;
            --accent: #E8752A;
            --accent-hover: #D4651A;
            --bg: #F5F7F4;
            --card-bg: #FFFFFF;
            --text-main: #1C211D;
            --text-secondary: #5C655F;
            --text-muted: #8B938E;
            --border: #E3E8E4;
            --success: #2E7D32;
            --warning: #B26A00;
            --error: #B3261E;
            --radius: 12px;
            --radius-btn: 8px;
            --shadow: 0 4px 24px rgba(27, 45, 28, 0.06);
            --shadow-hover: 0 8px 30px rgba(27, 45, 28, 0.12);
            --container: 1200px;
            --gap: 24px;
            --section-padding: 72px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        /* Header */
        .site-header {
            background: var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 68px;
            position: relative;
        }

        .header-mobile-row {
            display: none;
            width: 100%;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
        }

        .site-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .site-logo:hover {
            color: var(--accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            width: 100%;
        }

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

        .nav-list.nav-left {
            justify-content: flex-end;
            flex: 1;
        }

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

        .nav-list a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
            display: inline-block;
            line-height: 1.4;
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .nav-list a:hover {
            color: #fff;
        }

        .nav-list a:hover::after,
        .nav-list a.active::after {
            width: 100%;
        }

        .nav-list a.active {
            color: #fff;
            font-weight: 600;
        }

        .desktop-logo {
            margin: 0 8px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            line-height: 1.4;
            border: 1px solid transparent;
        }

        .btn-small {
            padding: 8px 20px;
            font-size: 14px;
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 117, 42, 0.3);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(31, 77, 46, 0.3);
        }

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

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            width: 44px;
            height: 44px;
            justify-content: center;
            align-items: center;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero Banner */
        .page-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
            padding: 88px 0;
            min-height: 480px;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, rgba(31, 77, 46, 0.92) 0%, rgba(31, 77, 46, 0.65) 50%, rgba(31, 77, 46, 0.45) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-crumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .hero-crumb a:hover {
            color: var(--accent);
        }

        .hero-crumb span {
            color: rgba(255, 255, 255, 0.5);
        }

        .page-hero h1 {
            font-size: 40px;
            line-height: 1.2;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 em {
            font-style: normal;
            color: var(--accent);
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius);
            padding: 28px;
        }

        .hero-card h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-card h3 span {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }

        .hero-card ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hero-card li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
        }

        .hero-card li i {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: rgba(232, 117, 42, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-style: normal;
            font-size: 11px;
            color: var(--accent);
            flex-shrink: 0;
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(31, 77, 46, 0.08);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 12px auto 0;
            line-height: 1.8;
        }

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .feature-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: opacity 0.3s;
        }

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

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

        .feature-item h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-item h3 span {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(31, 77, 46, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }

        .feature-item p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* Tournaments */
        .tournament-section {
            background: var(--card-bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .tournament-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .tournament-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .tournament-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .tournament-card:hover .card-img img {
            transform: scale(1.05);
        }

        .tournament-card .card-body {
            padding: 20px;
        }

        .tournament-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .tournament-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .card-tag {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }

        .step-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
        }

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

        .step-num {
            font-size: 42px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 16px;
            display: block;
            opacity: 0.8;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

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

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

        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

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

        .faq-item.active {
            border-color: rgba(31, 77, 46, 0.3);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            line-height: 1.5;
            transition: color 0.2s;
        }

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

        .faq-icon {
            width: 22px;
            height: 22px;
            position: relative;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--primary);
            border-radius: 2px;
            transition: transform 0.3s;
        }

        .faq-icon::before {
            width: 14px;
            height: 2px;
            top: 10px;
            left: 4px;
        }

        .faq-icon::after {
            width: 2px;
            height: 14px;
            top: 4px;
            left: 10px;
        }

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

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        /* CTA */
        .cta-section {
            padding: var(--section-padding) 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(232, 117, 42, 0.05);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-title {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 14px;
        }

        .footer-logo:hover {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            max-width: 320px;
        }

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

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

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

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
        }

        .footer-copyright {
            padding: 20px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-copyright a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-copyright a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .header-inner {
                flex-wrap: wrap;
                justify-content: space-between;
                padding: 0 24px;
            }

            .header-mobile-row {
                display: flex;
            }

            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 16px 0 24px;
                gap: 16px;
                align-items: stretch;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                flex: none;
                width: 100%;
            }

            .nav-list.nav-left,
            .nav-list.nav-right {
                justify-content: flex-start;
            }

            .nav-list a {
                display: block;
                padding: 12px 0;
                width: 100%;
                font-size: 18px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .nav-list a::after {
                display: none;
            }

            .desktop-logo {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .site-logo {
                font-size: 17px;
            }

            .page-hero {
                padding: 64px 0;
                min-height: auto;
            }

            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-card {
                max-width: 420px;
            }

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

        @media (max-width: 767px) {
            :root {
                --section-padding: 48px;
            }

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

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero {
                padding: 48px 0;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

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

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

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

            .cta-title {
                font-size: 28px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

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

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px;
                font-size: 14px;
            }

            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .tournament-card .card-img {
                height: 180px;
            }

            .feature-item {
                padding: 24px;
            }

            .feature-item h3 {
                font-size: 18px;
            }

            .btn {
                width: 100%;
                text-align: center;
            }
        }

        /* Focus States */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(232, 117, 42, 0.5);
            outline-offset: 2px;
        }

        .btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

/* roulang page: article */
:root {
  --primary: #1F4D2E;
  --primary-dark: #173A22;
  --accent: #E8752A;
  --accent-hover: #D1661F;
  --bg: #F5F7F4;
  --surface: #FFFFFF;
  --text: #1C211D;
  --text-secondary: #5C655F;
  --text-muted: #8B938E;
  --border: #E3E8E4;
  --radius: 12px;
  --radius-btn: 8px;
  --shadow: 0 4px 24px rgba(27, 45, 28, 0.06);
  --shadow-hover: 0 8px 30px rgba(27, 45, 28, 0.12);
  --container: 1200px;
  --spacer: 72px;
}
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  outline: none;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
img {
  max-width: 100%;
  display: block;
  border: 0;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.site-header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.14);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  position: relative;
}
.header-mobile-row {
  display: none;
}
.site-logo {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.5px;
  white-space: nowrap;
  transition: opacity 0.2s;
}
.site-logo:hover {
  opacity: 0.88;
}
.main-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.desktop-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-list a {
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 4px;
  position: relative;
  transition: color 0.2s;
}
.nav-list a:hover {
  color: #ffffff;
}
.nav-list a.active {
  color: #ffffff;
}
.nav-list a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border: none;
  border-radius: 6px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #ffffff;
  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);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}
.btn:active {
  transform: scale(0.97);
}
.btn-accent {
  background: var(--accent);
  color: #ffffff;
}
.btn-accent:hover {
  background: var(--accent-hover);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(232, 117, 42, 0.28);
}
.btn-small {
  padding: 8px 18px;
  font-size: 14px;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  padding: 14px 36px;
  font-size: 16px;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 117, 42, 0.3);
}
.btn-lg {
  padding: 16px 44px;
  font-size: 17px;
}
.article-main {
  padding: 48px 0 72px;
}
.article-layout {
  max-width: 880px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-muted);
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb .sep {
  color: #c9d0cb;
}
.breadcrumb .current {
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 360px;
}
.article-header {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.article-tag {
  display: inline-block;
  background: rgba(31, 77, 46, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}
.article-header h1 {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.h1-brand {
  color: var(--accent);
  font-weight: 700;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-body {
  background: var(--surface);
  border-radius: 16px;
  padding: 48px 52px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(227, 232, 228, 0.6);
}
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: #2a2f2b;
}
.article-content p {
  margin-bottom: 18px;
  text-indent: 2em;
  line-height: 1.85;
}
.article-content p:first-child {
  text-indent: 2em;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 16px;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin: 30px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
  line-height: 1.5;
}
.article-content img {
  border-radius: var(--radius);
  margin: 24px auto;
  box-shadow: 0 4px 16px rgba(27, 45, 28, 0.08);
  max-width: 100%;
  height: auto;
}
.article-content blockquote {
  background: #f0f4f0;
  border-left: 4px solid var(--primary);
  padding: 18px 22px;
  border-radius: 0 8px 8px 0;
  color: var(--text-secondary);
  font-size: 15px;
  margin: 24px 0;
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(31, 77, 46, 0.3);
  transition: all 0.2s;
}
.article-content a:hover {
  color: var(--accent);
  border-color: rgba(232, 117, 42, 0.4);
}
.article-content ul,
.article-content ol {
  margin: 0 0 20px 2em;
  line-height: 1.8;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 24px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: var(--bg);
  font-weight: 600;
}
.article-empty {
  text-align: center;
  padding: 56px 24px;
}
.article-empty h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.article-empty p {
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-size: 15px;
}
.article-back {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 36px;
  padding: 20px 0;
  flex-wrap: wrap;
}
.article-back a {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  border: 1px solid var(--border);
  padding: 9px 22px;
  border-radius: var(--radius-btn);
  transition: all 0.2s;
  background: var(--surface);
}
.article-back a:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}
.related-section {
  padding: 72px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.section-head {
  text-align: center;
  margin-bottom: 44px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  position: relative;
}
.section-head h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin: 12px auto 0;
}
.section-head p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 15px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: block;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 20px 20px 24px;
  border: 1px solid var(--border);
  transition: all 0.25s ease;
  height: 100%;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.related-thumb {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 16px;
  aspect-ratio: 16 / 10;
  background: var(--border);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.related-card:hover .related-thumb img {
  transform: scale(1.04);
}
.related-card .tag {
  display: inline-block;
  background: var(--primary);
  color: #ffffff;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}
.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
  transition: color 0.2s;
}
.related-card:hover h3 {
  color: var(--accent);
}
.related-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.cta-section {
  padding: 72px 0;
  background: var(--primary);
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
}
.cta-section .container {
  position: relative;
  z-index: 2;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 14px;
}
.cta-section p {
  font-size: 16px;
  opacity: 0.85;
  margin-bottom: 30px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-logo {
  display: inline-block;
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  transition: color 0.2s;
}
.footer-logo:hover {
  color: var(--accent);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
}
.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
}
.footer-links ul li {
  margin-bottom: 8px;
}
.footer-links ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.2s;
}
.footer-links ul li a:hover {
  color: var(--accent);
}
.footer-contact p {
  font-size: 14px;
  line-height: 1.6;
}
.footer-copyright {
  text-align: center;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-copyright a {
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s;
}
.footer-copyright a:hover {
  color: var(--accent);
}
@media (max-width: 1023px) {
  .header-inner {
    height: auto;
    padding: 14px 24px;
    flex-direction: column;
    align-items: stretch;
  }
  .header-mobile-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }
  .desktop-logo {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    display: none;
    flex-direction: column;
    gap: 12px;
    padding-top: 16px;
  }
  .main-nav.nav-open {
    display: flex;
  }
  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 0;
    width: 100%;
  }
  .nav-list li {
    width: 100%;
    text-align: center;
  }
  .nav-list li a {
    display: block;
    padding: 14px 0;
    font-size: 18px;
  }
  .nav-list li a.active::after {
    display: none;
  }
  .nav-list li a.active {
    color: var(--accent);
  }
  .nav-left,
  .nav-right {
    width: 100%;
  }
  .btn-small {
    margin-top: 8px;
    width: 100%;
    padding: 12px 18px;
  }
  .article-main {
    padding: 32px 0 56px;
  }
  .article-body {
    padding: 32px 28px;
  }
  .article-header h1 {
    font-size: 32px;
  }
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 767px) {
  .header-inner {
    padding: 12px 16px;
  }
  .article-header h1 {
    font-size: 28px;
  }
  .article-tag {
    font-size: 11px;
  }
  .article-meta {
    gap: 12px;
    font-size: 13px;
  }
  .article-body {
    padding: 24px 20px;
    border-radius: 12px;
  }
  .article-content p {
    font-size: 15px;
    line-height: 1.8;
  }
  .article-content h2 {
    font-size: 22px;
  }
  .article-content h3 {
    font-size: 18px;
  }
  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .related-section {
    padding: 48px 0;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .cta-section {
    padding: 48px 0;
  }
  .cta-section h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 28px;
  }
  .page-hero h1 {
    font-size: 28px;
  }
}

/* roulang page: category2 */
/* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            background: var(--bg);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
        }

        /* ===== Design Tokens ===== */
        :root {
            --primary: #1F4D2E;
            --primary-dark: #163824;
            --primary-medium: #2A5E3C;
            --accent: #E8752A;
            --accent-dark: #D5641F;
            --accent-light: #FDF0E7;
            --bg: #F5F7F4;
            --card: #FFFFFF;
            --text: #1C211D;
            --text-secondary: #5C655F;
            --text-muted: #8B938E;
            --border: #E3E8E4;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(27, 45, 28, 0.06);
            --shadow-lg: 0 8px 30px rgba(27, 45, 28, 0.12);
            --transition: 0.3s ease;
            --container: 1200px;
            --section-padding: 72px;
        }

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

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 8px;
            line-height: 1.2;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 117, 42, 0.3);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(232, 117, 42, 0.3);
        }
        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-small {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 6px;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(232, 117, 42, 0.5);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(0) scale(0.98);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            position: relative;
        }
        .header-mobile-row {
            display: none;
        }
        .site-logo {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            white-space: nowrap;
            transition: opacity 0.25s;
        }
        .site-logo:hover {
            opacity: 0.9;
            color: #fff;
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex: 1;
            gap: 16px;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-list li a {
            color: rgba(255, 255, 255, 0.88);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 16px;
            border-radius: 6px;
            display: inline-block;
            position: relative;
            transition: all 0.25s;
        }
        .nav-list li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-list li a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-list li a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .nav-list .btn {
            margin-left: 12px;
        }
        .desktop-logo {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(100deg, rgba(31, 77, 46, 0.94) 0%, rgba(31, 77, 46, 0.78) 60%, rgba(22, 56, 36, 0.6) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 96px 0 80px;
            position: relative;
            color: #fff;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 22px;
            backdrop-filter: blur(4px);
        }
        .page-hero h1 {
            font-size: 42px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 18px;
            max-width: 720px;
        }
        .page-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== Section System ===== */
        .section {
            padding: var(--section-padding) 0;
        }
        .section-gray {
            background: var(--bg);
        }
        .section-white {
            background: var(--card);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-header h2 {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== Service Overview ===== */
        .service-overview {
            background: var(--card);
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .overview-text .section-tag {
            margin-bottom: 12px;
        }
        .overview-text h2 {
            font-size: 30px;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text);
        }
        .overview-text p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .overview-list {
            margin-top: 20px;
            display: grid;
            gap: 12px;
        }
        .overview-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .overview-list li i {
            color: var(--accent);
            font-size: 16px;
            width: 20px;
            text-align: center;
        }
        .overview-media {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .overview-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .overview-media::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: linear-gradient(to top, rgba(31, 77, 46, 0.15), transparent);
            pointer-events: none;
        }

        /* ===== Feature Cards (Two-column) ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .feature-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent);
            opacity: 0;
            transition: opacity 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(31, 77, 46, 0.2);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent);
            margin-bottom: 18px;
            transition: all 0.3s;
        }
        .feature-card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Steps / How it works ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .step-card {
            text-align: center;
            padding: 36px 28px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all 0.3s;
            position: relative;
        }
        .step-card:hover {
            background: var(--card);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .step-number {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
            display: block;
            margin-bottom: 12px;
        }
        .step-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 20px;
            box-shadow: 0 6px 16px rgba(31, 77, 46, 0.2);
            transition: all 0.3s;
        }
        .step-card:hover .step-icon {
            background: var(--accent);
            box-shadow: 0 6px 20px rgba(232, 117, 42, 0.3);
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Service Details ===== */
        .detail-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 56px;
        }
        .detail-block:last-child {
            margin-bottom: 0;
        }
        .detail-block.reverse {
            direction: ltr;
        }
        .detail-block.reverse .detail-media {
            order: 2;
        }
        .detail-block.reverse .detail-content {
            order: 1;
        }
        .detail-media {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .detail-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
        }
        .detail-content h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text);
        }
        .detail-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .detail-list {
            display: grid;
            gap: 10px;
            margin-bottom: 20px;
        }
        .detail-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .detail-list li i {
            color: var(--accent);
            margin-top: 4px;
            font-size: 14px;
            flex-shrink: 0;
        }
        .detail-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s;
        }
        .detail-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.3s;
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(31, 77, 46, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            background: transparent;
            text-align: left;
            width: 100%;
            transition: background 0.25s;
        }
        .faq-question:hover {
            background: rgba(245, 247, 244, 0.6);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 2px solid var(--primary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: all 0.3s;
        }
        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding-top: 4px;
            border-top: 1px solid var(--border);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
            background: linear-gradient(120deg, var(--primary-dark), var(--primary-medium)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            background-blend-mode: multiply;
            color: #fff;
            text-align: center;
        }
        .cta-content h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 30px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.78);
            padding-top: 56px;
            font-size: 14px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.2s;
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-links h4,
        .footer-contact h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links ul {
            display: grid;
            gap: 10px;
        }
        .footer-links ul li a {
            font-size: 14px;
        }
        .footer-contact p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 220px;
        }
        .footer-copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-copyright a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-copyright a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header-inner {
                flex-direction: column;
                align-items: stretch;
                padding: 0;
            }
            .header-mobile-row {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 14px 24px;
                min-height: 64px;
            }
            .desktop-logo {
                display: none;
            }
            .nav-toggle {
                display: flex;
                flex-direction: column;
                gap: 5px;
                padding: 10px;
                background: rgba(255, 255, 255, 0.1);
                border-radius: 6px;
                width: 44px;
                height: 44px;
                align-items: center;
                justify-content: center;
                transition: background 0.3s;
            }
            .nav-toggle span {
                width: 22px;
                height: 2px;
                background: #fff;
                border-radius: 2px;
                transition: all 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);
            }
            .main-nav {
                display: none;
                flex-direction: column;
                background: var(--primary-dark);
                padding: 12px 24px 24px;
                gap: 0;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-list {
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                gap: 0;
            }
            .nav-list li a {
                display: block;
                padding: 14px 12px;
                font-size: 17px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                border-radius: 0;
            }
            .nav-list li a.active::after {
                display: none;
            }
            .nav-list li a.active {
                background: rgba(255, 255, 255, 0.08);
                color: #fff;
            }
            .nav-list .btn {
                margin: 14px 0 0;
                width: 100%;
                text-align: center;
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .detail-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .detail-block.reverse .detail-media {
                order: 0;
            }
            .detail-block.reverse .detail-content {
                order: 0;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            :root {
                --section-padding: 56px;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 64px 0 48px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .cta-content h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .overview-media img {
                min-height: 220px;
            }
            .detail-media img {
                min-height: 200px;
            }
            .step-card {
                padding: 24px 16px;
            }
            .feature-card {
                padding: 24px 18px;
            }
            .cta-actions .btn {
                width: 100%;
            }
            :root {
                --section-padding: 48px;
            }
        }