/* roulang page: index */
:root {
  --primary-900: #0B2B25;
  --primary-800: #0F3D35;
  --primary-700: #134E44;
  --primary-600: #166B5B;
  --primary-500: #1A8A74;
  --accent: #D97706;
  --accent-light: #F0A530;
  --bg-warm: #FAF9F6;
  --surface: #FFFFFF;
  --text: #1A2E2A;
  --text-muted: #6B7A76;
  --border: #E3E8E6;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 6px 24px rgba(11,43,37,0.06);
  --shadow-hover: 0 16px 40px rgba(11,43,37,0.12);
  --shadow-nav: 0 4px 24px rgba(0,0,0,0.06);
  --grad-main: linear-gradient(135deg, #0B2B25 0%, #134E44 55%, #1A8A74 100%);
  --grad-cta: linear-gradient(135deg, #D97706, #F0A530);
  --grad-badge: linear-gradient(135deg, #166B5B, #1A8A74);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg-warm);
  overflow-x: hidden;
}

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

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

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

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

/* 顶部导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

.header.scrolled {
  background: var(--surface);
  box-shadow: var(--shadow-nav);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.logo-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--accent) 100%);
  flex-shrink: 0;
  box-shadow: 0 2px 10px rgba(22,107,91,0.25);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text .l-main {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-900);
  letter-spacing: 0.5px;
}

.logo-text .l-sub {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.header.scrolled .logo-text .l-main {
  color: var(--primary-900);
}

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

.nav-link {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  position: relative;
  padding: 6px 0;
  transition: color 0.3s ease;
}

.header.scrolled .nav-link {
  color: var(--text);
}

.nav-link:hover {
  color: var(--accent-light);
}

.header.scrolled .nav-link:hover {
  color: var(--primary-600);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  padding: 8px;
  position: relative;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  margin: 5px auto;
  transition: all 0.3s ease;
}

.header.scrolled .nav-toggle span {
  background: var(--primary-900);
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--surface);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 28px;
    transition: right 0.4s ease;
    box-shadow: -8px 0 32px rgba(0,0,0,0.1);
  }

  .nav.open {
    right: 0;
  }

  .nav-link {
    color: var(--text);
    font-size: 17px;
  }

  .nav-link:hover {
    color: var(--primary-600);
  }

  .nav-toggle {
    display: block;
  }

  .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 首屏 */
.hero {
  min-height: 92vh;
  display: flex;
  align-items: center;
  position: relative;
  background: var(--grad-main);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.38;
  pointer-events: none;
}

.hero::after {
  content: '万';
  position: absolute;
  top: 80px;
  right: 80px;
  font-size: 240px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.08;
  pointer-events: none;
  line-height: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
  padding-top: 120px;
  padding-bottom: 80px;
}

.hero-content {
  max-width: 640px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 24px;
}

.hero h1 .gold {
  background: linear-gradient(90deg, #F0A530, #FFFFFF);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  font-size: 18px;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 520px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--grad-cta);
  color: #fff;
  box-shadow: 0 6px 18px rgba(217,119,6,0.3);
}

.btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(217,119,6,0.35);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.96);
}

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.8);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: #fff;
}

.btn-secondary:active {
  background: rgba(255,255,255,0.18);
}

.scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
  cursor: pointer;
  z-index: 3;
  transition: border-color 0.3s ease;
}

.scroll-indicator::before {
  content: '';
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.6);
  border-radius: 2px;
  animation: scrollDot 2s infinite;
}

@keyframes scrollDot {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.4; }
}

/* 痛点区 */
.pain-section {
  padding: 100px 0;
  background: var(--bg-warm);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-muted);
}

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

.pain-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
  transition: all 0.4s ease;
  position: relative;
  border: 1px solid rgba(227,232,230,0.5);
}

.pain-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.pain-num {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  color: rgba(22,107,91,0.1);
  margin-bottom: 20px;
}

.pain-card:nth-child(2) .pain-num {
  color: rgba(217,119,6,0.12);
}

.pain-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-700);
  margin-bottom: 12px;
}

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

/* 解决方案区 */
.solution-section {
  padding: 100px 0;
  background: #F0F7F4;
}

.solution-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 64px;
  gap: 24px;
}

.solution-header .title-wrap {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.solution-header .bar {
  width: 4px;
  height: 42px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 4px;
}

.solution-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}

.solution-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--primary-600);
  white-space: nowrap;
}

.solution-link:hover {
  color: var(--accent);
}

.solution-row {
  display: flex;
  align-items: center;
  gap: 64px;
  margin-bottom: 88px;
}

.solution-row:last-child {
  margin-bottom: 0;
}

.solution-row.reverse .solution-img {
  order: 2;
}

.solution-row.reverse .solution-info {
  order: 1;
}

.solution-img {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.solution-img img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.solution-info {
  flex: 1;
}

.solution-info h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-800);
  margin-bottom: 12px;
}

.solution-info .desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.solution-points {
  list-style: none;
  margin-bottom: 24px;
}

.solution-points li {
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.solution-points li::before {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--grad-badge);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='4 10 8 14 16 6'/%3E%3C/svg%3E");
  background-size: 12px 12px;
  background-position: center;
  background-repeat: no-repeat;
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-700);
  border: none;
  background: none;
  cursor: pointer;
  padding: 4px 0;
  transition: all 0.3s ease;
}

.btn-text .arrow {
  transition: transform 0.3s ease;
}

.btn-text:hover {
  color: var(--accent);
}

.btn-text:hover .arrow {
  transform: translateX(4px);
}

/* 数据区 */
.stats-section {
  padding: 100px 0;
  background: var(--grad-main);
  position: relative;
  overflow: hidden;
}

.stats-section .section-header h2 {
  color: #fff;
}

.stats-section .section-header p {
  color: rgba(255,255,255,0.7);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item {
  padding: 16px;
}

.stat-circle {
  width: 104px;
  height: 104px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.2);
}

.stat-circle .inner {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 800;
  color: var(--primary-700);
}

.stat-item:nth-child(even) .inner {
  background: var(--grad-badge);
  color: #fff;
}

.stat-label {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-top: 8px;
}

/* 资讯区 */
.news-section {
  padding: 100px 0;
  background: var(--surface);
}

.news-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--bg-warm);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.news-item:hover {
  box-shadow: var(--shadow-card);
  border-color: var(--border);
  background: var(--surface);
}

.news-thumb {
  width: 160px;
  height: 100px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

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

.news-item:hover .news-thumb img {
  transform: scale(1.05);
}

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

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.news-time {
  font-size: 12px;
  color: var(--text-muted);
}

.news-cat {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(217,119,6,0.1);
  padding: 2px 12px;
  border-radius: 32px;
}

.news-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary-700);
  margin-bottom: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  transition: color 0.3s ease;
}

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

.news-summary {
  font-size: 14px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news-empty {
  background: #f5f5f5;
  border: 1px dashed #ccc;
  border-radius: var(--radius-md);
  padding: 60px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* 证言区 */
.testimonial-section {
  padding: 100px 0;
  background: #F4F1EC;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.testimonial-card {
  background: linear-gradient(135deg, #0B2B25 0%, #134E44 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 8px;
  right: 24px;
  font-size: 96px;
  font-family: Georgia, serif;
  color: var(--accent);
  opacity: 0.5;
  line-height: 1;
}

.testimonial-text {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.9);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--grad-badge);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
}

.author-role {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
}

/* FAQ */
.faq-section {
  padding: 100px 0;
  background: var(--surface);
}

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

.faq-item {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.active {
  background: #F0F7F4;
  border-color: rgba(22,107,91,0.35);
}

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.3s ease;
  gap: 16px;
  min-height: 60px;
}

.faq-q:hover {
  color: var(--primary-600);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(217,119,6,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent);
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.35s ease, background 0.3s ease;
  position: relative;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--accent);
  border-radius: 1px;
  transition: all 0.35s ease;
}

.faq-icon::before {
  width: 10px;
  height: 2px;
}

.faq-icon::after {
  width: 2px;
  height: 10px;
}

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

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

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

.faq-a p {
  padding: 0 28px 24px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* CTA 区 */
.cta-section {
  padding: 120px 0;
  position: relative;
  background: var(--grad-main);
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  opacity: 0.2;
}

.cta-inner {
  position: relative;
  text-align: center;
  color: #fff;
  max-width: 600px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
}

.cta-trust {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 14px;
}

/* 页脚 */
.footer {
  background: var(--primary-900);
  padding: 64px 0 24px;
  color: rgba(255,255,255,0.7);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 24px;
}

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

.footer-brand .logo-text .l-sub {
  color: rgba(255,255,255,0.5);
}

.footer-brand .logo-icon {
  background: var(--grad-cta);
}

.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
  margin-top: 14px;
}

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

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  transition: color 0.3s ease;
}

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

.footer-contact {
  list-style: none;
}

.footer-contact li {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.footer-bottom {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding-top: 16px;
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 38px;
  }

  .solution-row {
    gap: 40px;
  }

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

  .footer-top {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 100px 0 80px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-sub {
    font-size: 16px;
  }

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

  .solution-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .solution-row,
  .solution-row.reverse {
    flex-direction: column;
    gap: 32px;
  }

  .solution-row.reverse .solution-img,
  .solution-row.reverse .solution-info,
  .solution-img,
  .solution-info {
    order: initial;
  }

  .solution-img img {
    height: 240px;
  }

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

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

  .news-thumb {
    width: 100%;
    height: 180px;
  }

  .news-content {
    width: 100%;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-circle {
    width: 88px;
    height: 88px;
  }

  .stat-circle .inner {
    width: 76px;
    height: 76px;
    font-size: 24px;
  }

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

  .faq-q {
    font-size: 16px;
    padding: 16px 20px;
  }

  .faq-a p {
    padding: 0 20px 20px;
  }

  .cta-section {
    padding: 60px 0;
  }

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

@media (max-width: 520px) {
  .hero h1 {
    font-size: 28px;
  }

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

  .btn {
    width: 100%;
  }

  .news-thumb {
    height: 160px;
  }

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

/* roulang page: category1 */
:root {
  --primary-900: #0B2B25;
  --primary-800: #0F3D35;
  --primary-700: #134E44;
  --primary-600: #166B5B;
  --primary-500: #1A8A74;
  --accent: #D97706;
  --accent-light: #F0A530;
  --bg-warm: #FAF9F6;
  --surface: #FFFFFF;
  --text: #1A2E2A;
  --text-muted: #6B7A76;
  --border: #E3E8E6;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 6px 24px rgba(11,43,37,0.06);
  --shadow-hover: 0 16px 40px rgba(11,43,37,0.12);
  --font: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--bg-warm);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;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:4px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:576px){.container{padding:0 16px}}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;height:72px;background:transparent;transition:background .3s ease,box-shadow .3s ease}
.header.scrolled{background:#fff;box-shadow:0 4px 24px rgba(0,0,0,.06)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-icon{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--primary-600),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;font-weight:800;flex-shrink:0;box-shadow:0 4px 14px rgba(11,43,37,.18)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.l-main{font-size:22px;font-weight:800;color:#fff;letter-spacing:1px;transition:color .3s}
.l-sub{font-size:10px;color:rgba(255,255,255,.55);letter-spacing:2.5px;text-transform:uppercase;margin-top:2px;transition:color .3s}
.header.scrolled .l-main{color:var(--primary-900)}
.header.scrolled .l-sub{color:var(--text-muted)}
.nav{display:flex;align-items:center;gap:36px}
.nav-link{font-size:16px;font-weight:500;color:rgba(255,255,255,.92);position:relative;padding:6px 0;transition:color .3s}
.nav-link:hover{color:#fff}
.nav-link.active{color:#fff}
.nav-link.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:3px;border-radius:2px;background:var(--accent-light)}
.header.scrolled .nav-link{color:var(--text)}
.header.scrolled .nav-link:hover,.header.scrolled .nav-link.active{color:var(--primary-600)}
.header.scrolled .nav-link.active::after{background:var(--accent)}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.header.scrolled .nav-toggle span{background:var(--primary-900)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{position:relative;min-height:64vh;display:flex;align-items:center;padding:150px 0 100px;background:linear-gradient(135deg,rgba(11,43,37,.95),rgba(19,78,68,.88),rgba(26,138,116,.78)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}
.hero::before{content:'万';position:absolute;top:60px;right:4%;font-size:200px;font-weight:800;color:rgba(240,165,48,.08);line-height:1;z-index:1}
.hero-inner{position:relative;z-index:2;max-width:820px}
.hero-badge{display:inline-block;padding:6px 18px;border-radius:32px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);font-size:12px;font-weight:600;letter-spacing:2px;text-transform:uppercase;color:rgba(255,255,255,.9);margin-bottom:24px}
.hero h1{font-size:38px;font-weight:700;line-height:1.3;margin-bottom:20px;color:#fff;letter-spacing:1px}
.hero h1 .dot{display:inline-block;margin:0 12px;color:var(--accent-light);font-weight:400}
.hero h1 .grad{background:linear-gradient(90deg,#F0A530,#FFFFFF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800}
.hero-sub{font-size:17px;color:rgba(255,255,255,.82);line-height:1.8;max-width:620px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.scroll-down{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);width:26px;height:44px;border:2px solid rgba(255,255,255,.55);border-radius:14px;display:flex;justify-content:center;padding-top:8px;z-index:2;transition:border-color .3s}
.scroll-down:hover{border-color:rgba(255,255,255,.9)}
.scroll-line{width:3px;height:9px;background:#fff;border-radius:2px;animation:scrollDown 2s infinite}
@keyframes scrollDown{0%{opacity:0;transform:translateY(-4px)}50%{opacity:1}100%{opacity:0;transform:translateY(8px)}}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 32px;border-radius:12px;font-size:16px;font-weight:600;transition:all .3s ease;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#D97706,#F0A530);color:#fff;box-shadow:0 8px 24px rgba(217,119,6,.35)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 28px rgba(217,119,6,.45)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-outline{background:transparent;border:1.5px solid rgba(255,255,255,.75);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-outline:active{background:rgba(255,255,255,.22)}
.btn-dark-outline{background:transparent;border:1.5px solid var(--primary-600);color:var(--primary-700)}
.btn-dark-outline:hover{background:var(--primary-600);color:#fff;box-shadow:0 8px 20px rgba(22,107,91,.22)}
.btn-dark-outline:active{background:var(--primary-700)}

/* ===== Section ===== */
.section{padding:100px 0}
.section-alt{background:var(--surface)}
.section-head{text-align:center;margin-bottom:56px}
.section-head h2{font-size:32px;font-weight:700;color:var(--primary-900);line-height:1.35;letter-spacing:.5px}
.section-head .section-sub{color:var(--text-muted);font-size:15px;margin-top:14px}

/* ===== 图文介绍块 ===== */
.split-block{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.split-image{position:relative}
.split-image img{border-radius:24px;box-shadow:var(--shadow-card);width:100%;height:auto;object-fit:cover;transition:transform .4s ease}
.split-image:hover img{transform:scale(1.02)}
.split-image::after{content:'';position:absolute;inset:0;border-radius:24px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18)}
.split-content h2{font-size:30px;font-weight:700;color:var(--primary-900);line-height:1.4;padding-left:22px;position:relative;margin-bottom:24px}
.split-content h2::before{content:'';position:absolute;left:0;top:10px;width:4px;height:30px;border-radius:2px;background:linear-gradient(180deg,var(--accent),var(--accent-light))}
.split-content p{font-size:16px;color:var(--text-muted);line-height:1.9;margin-bottom:16px}
.split-content .btn{margin-top:12px}

/* ===== 要点列表块 ===== */
.principle-section{background:var(--surface)}
.principle-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;max-width:960px;margin:0 auto}
.principle-item{background:var(--bg-warm);border-radius:20px;padding:30px 28px;display:flex;gap:20px;box-shadow:var(--shadow-card);transition:transform .3s ease,box-shadow .3s ease}
.principle-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.check-icon{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#D97706,#F0A530);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;flex-shrink:0;margin-top:2px;box-shadow:0 4px 12px rgba(217,119,6,.28)}
.principle-item h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:8px}
.principle-item p{font-size:14px;color:var(--text-muted);line-height:1.7}

/* ===== 流程 ===== */
.process-section{background:var(--bg-warm)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-card{background:#fff;border-radius:20px;padding:34px 26px 30px;box-shadow:var(--shadow-card);position:relative;transition:transform .3s ease,box-shadow .3s ease;overflow:hidden}
.process-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-light));opacity:0;transition:opacity .3s}
.process-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.process-card:hover::before{opacity:1}
.process-num{font-size:40px;font-weight:800;color:rgba(240,165,48,.35);line-height:1;display:block;margin-bottom:18px;font-variant-numeric:tabular-nums}
.process-card h3{font-size:19px;font-weight:700;color:var(--text);margin-bottom:12px}
.process-card p{font-size:14px;color:var(--text-muted);line-height:1.7}

/* ===== FAQ ===== */
.faq-section{background:var(--surface)}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:16px;background:#fff;margin-bottom:16px;overflow:hidden;transition:border-color .3s,background .3s}
.faq-item.open{background:#F0F7F4;border-color:rgba(22,107,91,.35)}
.faq-question{width:100%;padding:24px 28px;font-size:18px;font-weight:600;color:var(--text);display:flex;justify-content:space-between;align-items:center;background:none;text-align:left;transition:color .3s}
.faq-question:hover{color:var(--primary-600)}
.faq-icon{width:30px;height:30px;border-radius:50%;background:rgba(217,119,6,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:600;transition:transform .25s ease,background .25s;flex-shrink:0}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease-in-out}
.faq-answer p{padding:0 28px 26px;font-size:14px;color:var(--text-muted);line-height:1.9}
.faq-item.open .faq-answer{max-height:400px}

/* ===== CTA ===== */
.cta-section{padding:88px 0;background:linear-gradient(135deg,rgba(11,43,37,.94),rgba(19,78,68,.88),rgba(26,138,116,.82)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;text-align:center;color:#fff}
.cta-section h2{font-size:32px;font-weight:700;margin-bottom:16px;letter-spacing:1px}
.cta-section p{color:rgba(255,255,255,.78);font-size:16px;margin-bottom:30px}
.cta-note{font-size:13px;margin-top:20px;opacity:.65;color:rgba(255,255,255,.8)!important}

/* ===== Footer ===== */
.footer{background:var(--primary-900);color:rgba(255,255,255,.7);padding:64px 0 0;margin-top:0}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1.2fr 1fr;gap:48px;padding-bottom:48px}
.footer .logo{margin-bottom:14px}
.footer .l-main{color:#fff}
.footer .l-sub{color:rgba(255,255,255,.5)}
.footer-desc{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;margin-top:14px}
.footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px}
.footer-links li,.footer-contact li{margin-bottom:4px}
.footer-links a,.footer-contact li{font-size:14px;color:rgba(255,255,255,.7);line-height:2.2;display:block;transition:color .3s}
.footer-links a:hover{color:var(--accent-light)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:13px;color:rgba(255,255,255,.5);text-align:center}

/* ===== 响应式 ===== */
@media(max-width:1023px){
  .split-block{grid-template-columns:1fr;gap:40px}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
  .nav{gap:24px}
  .hero h1{font-size:34px}
}
@media(max-width:767px){
  .nav{position:fixed;top:72px;left:0;right:0;display:none;flex-direction:column;align-items:flex-start;background:#fff;padding:20px 24px 28px;box-shadow:0 12px 24px rgba(0,0,0,.08);gap:4px;z-index:99}
  .nav.open{display:flex}
  .nav-link{font-size:16px;padding:12px 0;color:var(--text)!important;width:100%;border-bottom:1px solid #f0f0f0}
  .nav-link:hover{color:var(--primary-600)!important}
  .nav-link.active{color:var(--primary-600)!important}
  .nav-link.active::after{left:0;transform:none;width:24px;bottom:4px}
  .nav-toggle{display:flex}
  .header.open{background:#fff}
  .header.open .l-main{color:var(--primary-900)}
  .header.open .l-sub{color:var(--text-muted)}
  .header.open .nav-toggle span{background:var(--primary-900)}
  .hero{min-height:auto;padding:130px 0 80px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .section{padding:64px 0}
  .section-head{margin-bottom:40px}
  .section-head h2{font-size:24px}
  .split-content h2{font-size:24px}
  .principle-grid{grid-template-columns:1fr;gap:20px}
  .process-grid{grid-template-columns:1fr;gap:20px}
  .cta-section{padding:64px 0}
  .cta-section h2{font-size:26px}
  .footer{padding-top:48px}
  .footer-top{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .hero-actions .btn{width:100%;max-width:280px}
}
@media(max-width:576px){
  .container{padding:0 16px}
  .hero{padding:120px 0 70px}
  .hero-badge{font-size:11px;padding:5px 14px}
  .footer-bottom{font-size:12px}
  .btn{padding:0 24px;height:46px;font-size:15px}
}

/* roulang page: article */
:root {
  --primary-900: #0B2B25;
  --primary-800: #0F3D35;
  --primary-700: #134E44;
  --primary-600: #166B5B;
  --primary-500: #1A8A74;
  --accent: #D97706;
  --accent-light: #F0A530;
  --bg-warm: #FAF9F6;
  --surface: #FFFFFF;
  --text: #1A2E2A;
  --text-muted: #6B7A76;
  --text-soft: #3A4E4A;
  --border: #E3E8E6;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-card: 0 6px 24px rgba(11,43,37,0.06);
  --shadow-hover: 0 16px 40px rgba(11,43,37,0.12);
  --font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul,
ol {
  list-style: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

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

/* ===== Header / Nav ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  transition: background .3s, box-shadow .3s;
}

.header-solid {
  background: var(--surface);
  border-bottom: 1px solid rgba(227, 232, 230, 0.7);
}

.header.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

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

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

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-600), var(--accent));
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.l-main {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-900);
  letter-spacing: 0.5px;
}

.l-sub {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  padding: 8px 0;
  transition: color .25s;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: translateX(-50%);
  transition: width .3s;
}

.nav-link:hover {
  color: var(--primary-600);
}

.nav-link.active {
  color: var(--primary-600);
}

.nav-link.active::after {
  width: 22px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  border-radius: 8px;
  transition: background .25s;
}

.nav-toggle:hover {
  background: rgba(11, 43, 37, 0.05);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--primary-900);
  border-radius: 2px;
  transition: all .3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: #F7F7F5;
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-muted);
}

.breadcrumb-bar a {
  color: var(--primary-700);
  font-weight: 500;
  transition: color .25s;
}

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

.breadcrumb-bar .sep {
  color: #B5C0BD;
  font-weight: 400;
}

.breadcrumb-bar .current {
  color: var(--text-muted);
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.breadcrumb-bar .crumb-cat {
  color: var(--primary-600);
}

/* ===== Article Main ===== */
.article-main {
  padding: 64px 0 88px;
  background: var(--bg-warm);
}

.article-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 56px 64px;
  box-shadow: var(--shadow-card);
}

.article-header {
  margin-bottom: 40px;
}

.article-cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 32px;
  background: rgba(217, 119, 6, 0.1);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .3px;
  margin-bottom: 18px;
}

.article-header h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 24px;
  flex-wrap: wrap;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta svg {
  width: 16px;
  height: 16px;
  opacity: .7;
}

/* ===== Article Body ===== */
.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-soft);
}

.article-body > * + * {
  margin-top: 24px;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.45;
  margin-top: 48px;
  color: var(--primary-900);
}

.article-body h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
  margin-top: 40px;
  color: var(--primary-900);
}

.article-body h4 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.6;
  margin-top: 32px;
  color: var(--primary-800);
}

.article-body p {
  color: var(--text-soft);
}

.article-body a {
  color: var(--primary-600);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color .25s;
}

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

.article-body ul {
  list-style: none;
  padding-left: 0;
}

.article-body ul li {
  position: relative;
  padding-left: 24px;
  margin-top: 12px;
}

.article-body ul li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.85em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.article-body ol {
  list-style: none;
  counter-reset: article-ol;
  padding-left: 0;
}

.article-body ol li {
  counter-increment: article-ol;
  position: relative;
  padding-left: 36px;
  margin-top: 12px;
}

.article-body ol li::before {
  content: counter(article-ol);
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-600);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-body blockquote {
  background: var(--bg-warm);
  border-left: 4px solid var(--primary-600);
  border-radius: 12px;
  padding: 20px 28px;
  font-size: 16px;
  color: var(--text-muted);
}

.article-body img {
  border-radius: 16px;
  margin: 32px 0;
}

.article-body figure {
  margin: 32px 0;
}

.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 12px;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 15px;
}

.article-body th {
  background: var(--primary-900);
  color: #fff;
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
}

.article-body td {
  padding: 12px 16px;
  border: 1px solid var(--border);
}

.article-body tr:hover td {
  background: var(--bg-warm);
}

.article-body code {
  background: var(--bg-warm);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 14px;
  color: var(--primary-700);
}

.article-body pre {
  background: var(--primary-900);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  color: #E8F0EE;
  font-size: 14px;
  line-height: 1.7;
}

.article-body pre code {
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 80px 20px;
}

.not-found .icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--bg-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: var(--text-muted);
  font-size: 32px;
}

.not-found p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.not-found a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 32px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  font-weight: 600;
  transition: all .3s;
}

.not-found a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(217, 119, 6, 0.35);
}

.not-found a:active {
  transform: translateY(0);
}

/* ===== Back Entry ===== */
.back-entry {
  margin-top: 48px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

.back-entry a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  color: var(--primary-700);
  font-weight: 500;
  transition: color .25s;
}

.back-entry a::before {
  content: '←';
  transition: transform .25s;
}

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

.back-entry a:hover::before {
  transform: translateX(-4px);
}

/* ===== Related Section ===== */
.related-section {
  padding: 72px 0 96px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.related-section h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.related-section h3::before {
  content: '';
  width: 4px;
  height: 20px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--accent), var(--accent-light));
}

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

.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(22, 107, 91, 0.35);
}

.related-card .thumb {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--bg-warm);
}

.related-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}

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

.related-card .info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card .meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.related-card .tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 32px;
  background: rgba(217, 119, 6, 0.1);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .3px;
}

.related-card h4 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--primary-700);
  margin-bottom: 12px;
  transition: color .25s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card:hover h4 {
  color: var(--accent);
}

.related-card .excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.related-card .more {
  margin-top: 16px;
  font-size: 14px;
  color: var(--primary-700);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .25s;
}

.related-card .more::after {
  content: '→';
  transition: transform .25s;
}

.related-card:hover .more {
  color: var(--accent);
}

.related-card:hover .more::after {
  transform: translateX(3px);
}

/* ===== Footer ===== */
.footer {
  background: var(--primary-900);
  color: #fff;
  padding: 64px 0 0;
}

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

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

.footer-brand .logo .l-sub {
  color: rgba(255, 255, 255, 0.5);
}

.footer-brand .logo-icon {
  background: linear-gradient(135deg, var(--primary-600), var(--accent));
}

.footer-desc {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  margin-top: 6px;
}

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

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color .25s, padding-left .25s;
}

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

.footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 24px 16px;
    gap: 0;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-top: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid #EEF2F0;
    font-size: 16px;
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-link::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .article-wrap {
    padding: 44px 40px;
  }

  .related-list {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .article-main {
    padding: 32px 0 56px;
  }

  .article-wrap {
    padding: 28px 20px;
    border-radius: 16px;
  }

  .article-header h1 {
    font-size: 28px;
  }

  .article-body {
    font-size: 16px;
  }

  .article-body h2 {
    font-size: 22px;
    margin-top: 36px;
  }

  .article-body h3 {
    font-size: 19px;
    margin-top: 32px;
  }

  .article-body blockquote {
    padding: 16px 20px;
  }

  .related-list {
    grid-template-columns: 1fr;
  }

  .related-section {
    padding: 48px 0 64px;
  }

  .related-section h3 {
    font-size: 21px;
  }

  .footer {
    padding: 48px 0 0;
  }

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

@media (max-width: 479px) {
  .footer-top {
    grid-template-columns: 1fr;
  }

  .breadcrumb-bar .current {
    max-width: 200px;
  }

  .related-card .thumb {
    height: 180px;
  }
}