/* roulang page: index */
:root {
  --primary: #00C2A8;
  --primary-dark: #00A68F;
  --gold: #C9A54A;
  --dark: #0B0F14;
  --dark-2: #151A21;
  --light: #F5F7FA;
  --white: #FFFFFF;
  --text: #1A1E26;
  --text-2: #5B6472;
  --border: #E4E8EE;
  --border-dark: rgba(255,255,255,0.08);
  --radius: 12px;
  --radius-full: 999px;
  --shadow: 0 2px 8px rgba(11,15,20,0.04);
  --shadow-hover: 0 12px 32px rgba(11,15,20,0.10);
  --shadow-nav: 0 4px 24px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--light);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input { font-family: inherit; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section { padding: 96px 0; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
h1, h2, h3 { line-height: 1.3; font-weight: 800; }
h2 { font-size: 36px; margin-bottom: 24px; }
h3 { font-size: 20px; font-weight: 700; }
p { line-height: 1.8; }

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dark);
  border-bottom: 1px solid var(--border-dark);
  box-shadow: none;
  transition: all 0.3s ease;
}
.site-header.scrolled {
  box-shadow: var(--shadow-nav);
  background: rgba(11,15,20,0.95);
}
.nav-main {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 76px;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  transition: height 0.3s ease;
}
.site-header.scrolled .nav-main { height: 64px; }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon { width: 32px; height: 32px; }
.logo-text {
  font-size: 22px;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.02em;
}
.logo-text span {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--primary);
  line-height: 1;
  margin-top: 2px;
}
.logo-en {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.6);
}
.search-box {
  flex: 1;
  max-width: 520px;
  position: relative;
  margin-left: 24px;
  margin-right: 24px;
}
.search-box svg {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  stroke: rgba(255,255,255,0.4);
  fill: none;
  stroke-width: 1.8;
  pointer-events: none;
}
.search-box input {
  width: 100%;
  height: 44px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  background: var(--dark-2);
  color: var(--white);
  padding: 0 44px 0 46px;
  font-size: 15px;
  transition: all 0.3s ease;
}
.search-box input::placeholder { color: rgba(255,255,255,0.45); }
.search-box input:focus {
  background: #1A2026;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,194,168,0.25);
}
.search-clear {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255,255,255,0.5);
  font-size: 16px;
  width: 24px;
  height: 24px;
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color 0.2s ease;
}
.search-clear:hover { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  white-space: nowrap;
}
.nav-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  font-weight: 600;
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-cta {
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  line-height: 1.4;
}
.btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--primary);
  color: var(--dark);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  color: var(--dark);
}
.btn-secondary {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-secondary:hover {
  background: rgba(0,194,168,0.08);
  color: var(--primary-dark);
  transform: translateY(-1px);
}
.btn-sm { padding: 10px 22px; font-size: 13px; }
.btn-dark {
  background: var(--white);
  color: var(--dark);
}
.btn-dark:hover { background: rgba(255,255,255,0.85); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  display: none;
  background: var(--dark);
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.mobile-nav.open { max-height: 300px; }
.mobile-nav a {
  display: block;
  padding: 14px 0;
  font-size: 16px;
  color: var(--white);
  border-bottom: 1px solid var(--border-dark);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a.active { color: var(--primary); }

/* 移动端搜索独立行 */
.mobile-search-row {
  display: none;
  background: var(--dark);
  padding: 0 24px 14px;
}
.mobile-search-row .search-box {
  max-width: 100%;
  margin: 0;
}

/* Hero */
.hero {
  background: linear-gradient(90deg, #0B0F14 95%, rgba(11,15,20,0) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  min-height: 760px;
  display: flex;
  align-items: center;
  position: relative;
  padding: 80px 0 60px;
}
.hero-content { max-width: 640px; }
.hero .eyebrow {
  color: var(--gold);
  animation: fadeInUp 0.6s ease both;
}
.hero h1 {
  font-size: 64px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}
.hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  max-width: 520px;
  animation: fadeInUp 0.6s ease 0.2s both;
}
.hero-btns {
  display: flex;
  gap: 16px;
  align-items: center;
  animation: fadeInUp 0.6s ease 0.3s both;
}
.hero-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 4px;
  transition: color 0.2s ease;
}
.hero-link:hover { color: var(--primary-dark); }
.hero-link svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; transition: transform 0.2s ease; }
.hero-link:hover svg { transform: translateX(4px); }
.hero-stats {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  gap: 48px;
  animation: fadeInUp 0.6s ease 0.4s both;
}
.stat-item .num {
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
}
.stat-item .num em { font-style: normal; color: var(--gold); }
.stat-item .label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}

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

/* 卖点三连 */
.features {
  background: var(--light);
}
.features-header { margin-bottom: 56px; }
.features-header h2 { margin-bottom: 8px; }
.features-grid {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}
.feature-item {
  flex: 1;
  padding: 40px 32px;
  position: relative;
  transition: background 0.3s ease;
}
.feature-item:not(:last-child) { border-right: 1px solid var(--border); }
.feature-item:hover { background: rgba(0,194,168,0.03); }
.feature-num {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.7;
  line-height: 1;
  margin-bottom: 16px;
  transition: opacity 0.3s ease;
}
.feature-item:hover .feature-num { opacity: 1; }
.feature-icon {
  width: 40px;
  height: 40px;
  color: var(--text);
  margin-bottom: 16px;
  transition: transform 0.3s ease;
}
.feature-item:hover .feature-icon { transform: translateX(4px); }
.feature-item h3 { margin-bottom: 10px; }
.feature-item p {
  font-size: 15px;
  color: var(--text-2);
}

/* 场景演示 */
.scenes {
  background: var(--dark);
  color: var(--white);
}
.scene-row {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 96px;
}
.scene-row:last-child { margin-bottom: 0; }
.scene-row.reverse { flex-direction: row-reverse; }
.scene-text { flex: 5; }
.scene-text .eyebrow { color: var(--primary); }
.scene-text h2 {
  font-size: 28px;
  color: var(--white);
  margin-bottom: 16px;
}
.scene-text > p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}
.scene-list { list-style: none; margin-top: 20px; }
.scene-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  padding: 8px 0;
}
.scene-list svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke: var(--primary);
  fill: none;
  stroke-width: 2;
  margin-top: 5px;
}
.scene-image { flex: 7; position: relative; }
.scene-image::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 12px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--primary);
  border-radius: 16px;
  z-index: 1;
}
.scene-row.reverse .scene-image::before {
  top: 12px;
  left: -12px;
}
.scene-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 16px;
  position: relative;
  z-index: 2;
  transition: transform 0.4s ease;
}
.scene-image:hover img { transform: scale(1.03); }

/* 社会认同 */
.social-proof {
  background: var(--light);
}
.logo-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  margin-bottom: 64px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-2);
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all 0.3s ease;
  text-align: center;
  border: 1px dashed transparent;
}
.logo-item:hover {
  filter: grayscale(0);
  opacity: 1;
  color: var(--text);
}
.testimonials { margin-top: 40px; }
.testimonials h2 { margin-bottom: 40px; }
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  height: 100%;
  box-shadow: var(--shadow);
  transition: border-color 0.3s ease;
}
.testimonial-card:hover { border-color: var(--primary); }
.quote-mark {
  font-family: Georgia, serif;
  font-size: 56px;
  line-height: 1;
  color: var(--primary);
  margin-bottom: 8px;
}
.testimonial-card p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 20px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0,194,168,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}
.testimonial-author .info .name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}
.testimonial-author .info .role {
  font-size: 12px;
  color: var(--text-2);
}

/* 最新资讯 */
.news-section {
  background: var(--white);
}
.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
}
.news-header h2 { margin-bottom: 0; }
.news-grid { display: flex; gap: 24px; }
.news-card {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.news-cover {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}
.news-cover img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-cover img { transform: scale(1.05); }
.badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(0,194,168,0.85);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}
.news-body { padding: 20px 24px 24px; }
.news-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 52px;
  transition: color 0.2s ease;
}
.news-card:hover .news-body h3 { color: var(--primary); }
.news-body p {
  font-size: 14px;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  min-height: 66px;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-2);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.news-meta time { display: inline-flex; align-items: center; gap: 6px; }
.news-meta time svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.read-more:hover { color: var(--primary-dark); }
.empty-state {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text-2);
  font-size: 15px;
  background: var(--light);
}
.empty-state svg {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  display: block;
  stroke: var(--text-2);
  fill: none;
  stroke-width: 1.8;
}

/* FAQ */
.faq-section {
  background: var(--light);
}
.faq-header { text-align: center; margin-bottom: 48px; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.open {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.faq-item.open::after {
  content: '';
  display: block;
  height: 2px;
  width: 100%;
  background: var(--primary);
  position: relative;
  top: 0;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  transition: transform 0.3s ease;
}
.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.faq-icon::before { width: 100%; height: 2px; top: 50%; left: 0; transform: translateY(-50%); }
.faq-icon::after { width: 2px; height: 100%; left: 50%; top: 0; transform: translateX(-50%); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}
.faq-answer p {
  font-size: 15px;
  color: var(--text-2);
}

/* CTA 区块 */
.cta-section {
  position: relative;
  background: var(--dark);
  padding: 80px 0;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,194,168,0.05), rgba(201,165,74,0.05));
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 {
  color: var(--white);
  font-size: 32px;
  margin-bottom: 16px;
}
.cta-section p {
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 16px;
}

/* 底部固定转化条 */
.fixed-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 14px 24px;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.12);
  opacity: 0;
  pointer-events: none;
  transform: translateY(100%);
  transition: all 0.3s ease;
}
.fixed-cta.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.fixed-cta.hidden { opacity: 0; pointer-events: none; transform: translateY(100%); }
.fixed-cta-text {
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
}
.fixed-cta .btn { padding: 12px 28px; font-size: 14px; }
body { padding-bottom: 76px; }

/* 页脚 */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 32px;
}
.footer-grid { display: flex; gap: 40px; }
.footer-col { flex: 1; }
.footer-col:first-child { flex: 1.6; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .logo-text { font-size: 20px; }
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 20px;
  line-height: 1.7;
}
.footer-copyright {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  margin-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color 0.2s ease;
}
.footer-col ul a:hover { color: var(--primary); }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer-contact svg {
  width: 16px;
  height: 16px;
  stroke: var(--primary);
  fill: none;
  stroke-width: 1.8;
  flex-shrink: 0;
}
.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}
.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.social-links a:hover {
  border-color: var(--primary);
  background: rgba(0,194,168,0.1);
}
.social-links svg {
  width: 16px;
  height: 16px;
  stroke: rgba(255,255,255,0.6);
  fill: none;
  stroke-width: 1.8;
  transition: stroke 0.2s ease;
}
.social-links a:hover svg { stroke: var(--primary); }
.footer-bottom {
  margin-top: 48px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .search-box { max-width: 400px; margin-left: 16px; margin-right: 16px; }
  .logo-text { font-size: 20px; }
  .hero h1 { font-size: 48px; }
  .hero { min-height: 660px; }
  .logo-wall { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { flex-wrap: wrap; }
  .footer-col { flex: 1 1 30%; }
  .footer-col:first-child { flex: 1 1 100%; }
  .news-grid { flex-wrap: wrap; }
  .news-card { flex: 1 1 calc(50% - 12px); }
}

@media (max-width: 639px) {
  .section { padding: 64px 0; }
  h2 { font-size: 26px; }
  .nav-main { height: 64px; flex-wrap: wrap; gap: 12px; }
  .site-header.scrolled .nav-main { height: 56px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
  .logo-text { font-size: 20px; }
  .search-box { margin-left: 0; margin-right: 0; }
  .mobile-nav.open { display: block; }
  .mobile-search-row { display: block; }
  .mobile-search-row .search-box { display: flex; }
  .search-box { max-width: 100%; }
  .hero { min-height: 90vh; padding: 60px 0 40px; background: linear-gradient(135deg, rgba(11,15,20,0.95) 70%, rgba(11,15,20,0.7)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat; }
  .hero h1 { font-size: 40px; }
  .hero-sub { font-size: 15px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .stat-item .num { font-size: 28px; }
  .features-grid { flex-direction: column; }
  .feature-item:not(:last-child) { border-right: none; border-bottom: 1px solid var(--border); }
  .scene-row, .scene-row.reverse { flex-direction: column; gap: 24px; margin-bottom: 64px; }
  .scene-image img { height: 200px; }
  .scene-image::before { display: none; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .news-grid { flex-wrap: wrap; }
  .news-card { flex: 1 1 100%; margin-bottom: 16px; }
  .news-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .fixed-cta { padding: 10px 16px; gap: 12px; }
  .fixed-cta-text { font-size: 13px; }
  .fixed-cta .btn { padding: 10px 20px; font-size: 12px; }
  body { padding-bottom: 56px; }
  .footer-grid { flex-direction: column; gap: 32px; }
  .footer-col { flex: 1 1 100%; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .cta-section h2 { font-size: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* roulang page: category1 */
:root {
  --color-primary: #00C2A8;
  --color-primary-dark: #00A68F;
  --color-accent: #C9A54A;
  --color-dark: #0B0F14;
  --color-dark-2: #151A21;
  --color-dark-3: #1A2026;
  --color-light: #F5F7FA;
  --color-card: #FFFFFF;
  --color-text: #1A1E26;
  --color-text-soft: #5B6472;
  --color-border: #E4E8EE;
  --color-border-dark: rgba(255,255,255,0.08);
  --radius-card: 12px;
  --radius-img: 16px;
  --radius-pill: 999px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 8px rgba(11,15,20,0.04);
  --shadow-hover: 0 12px 32px rgba(11,15,20,0.10);
  --shadow-header: 0 4px 24px rgba(0,0,0,0.12);
  --font-main: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", sans-serif;
  --transition-base: 0.2s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-light);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition-base); }
a:hover { color: var(--color-primary-dark); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }

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

/* ===== Header ===== */
.site-header {
  background: var(--color-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border-dark);
  box-shadow: var(--shadow-header);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 72px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon { width: 32px; height: 32px; }
.logo-text {
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.logo-en {
  font-size: 10px;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.22em;
  line-height: 1;
}
.header-center {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 24px;
  min-width: 0;
}
.search-box {
  flex: 1;
  max-width: 520px;
  display: flex;
  align-items: center;
  background: var(--color-dark-2);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  height: 44px;
  padding: 0 18px;
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.search-box:focus-within {
  background: var(--color-dark-3);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,194,168,0.25);
}
.search-icon {
  width: 18px;
  height: 18px;
  color: #8A94A6;
  margin-right: 10px;
  flex-shrink: 0;
}
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: 15px;
  font-family: var(--font-main);
  height: 100%;
}
.search-input::placeholder { color: #8A94A6; }
.search-input::-webkit-search-cancel-button { display: none; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  color: rgba(255,255,255,0.72);
  font-size: 14px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-base);
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a.active {
  color: var(--color-primary);
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-main);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  padding: 16px 32px;
  border-radius: var(--radius-pill);
  border: 1.5px solid transparent;
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--color-primary);
  color: var(--color-dark);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-dark);
  transform: translateY(-1px);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(0,194,168,0.2);
}
.btn-secondary {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-secondary:hover {
  background: rgba(0,194,168,0.08);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}
.btn-sm { padding: 10px 22px; font-size: 14px; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.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); }

.mobile-nav {
  display: none;
  background: var(--color-dark);
  border-top: 1px solid var(--color-border-dark);
  padding: 20px 0 28px;
}
.mobile-nav.open { display: block; }
.mobile-nav .search-box {
  max-width: none;
  margin-bottom: 18px;
}
.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 18px;
}
.mobile-nav-links a {
  color: rgba(255,255,255,0.78);
  font-size: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  transition: background var(--transition-base), color var(--transition-base);
}
.mobile-nav-links a:hover {
  background: rgba(255,255,255,0.05);
  color: #fff;
}
.mobile-nav-links a.active {
  color: var(--color-primary);
  background: rgba(0,194,168,0.08);
}
.btn-block { width: 100%; }

/* ===== Page Banner ===== */
.page-banner {
  background-color: var(--color-dark);
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 80px 0 72px;
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,15,20,0.92) 40%, rgba(11,15,20,0.55) 100%);
}
.banner-content {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.56);
}
.breadcrumb a { color: rgba(255,255,255,0.56); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }
.breadcrumb-current { color: var(--color-primary); }
.page-title {
  color: #fff;
  font-size: 48px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.banner-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.5);
  font-size: 14px;
}
.banner-line {
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 3px;
  margin-top: 18px;
}

/* ===== Intro ===== */
.category-intro {
  background: var(--color-light);
  padding: 64px 0;
}
.intro-text {
  max-width: 860px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--color-text-soft);
  text-align: center;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
}
.intro-text::before {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
  margin: 0 auto 24px;
}

/* ===== Cards ===== */
.category-cards {
  background: var(--color-light);
  padding: 0 0 80px;
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 10px;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.article-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  margin-bottom: 24px;
}
.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(0,194,168,0.35);
}
.card-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--color-dark-2);
}
.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.article-card:hover .card-thumb img {
  transform: scale(1.03);
}
.card-body {
  padding: 24px;
}
.card-badge {
  display: inline-block;
  background: rgba(0,194,168,0.10);
  color: var(--color-primary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}
.card-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-soft);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}
.card-link:hover { color: var(--color-primary-dark); }
.card-link .arrow {
  transition: transform var(--transition-base);
}
.card-link:hover .arrow { transform: translateX(2px); }

/* ===== CTA ===== */
.cta-section {
  background: var(--color-dark);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,194,168,0.6), transparent);
}
.cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.cta-title {
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 14px;
}
.cta-desc {
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 28px;
}
.cta-btn-wrap {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-dark);
  border-top: 1px solid var(--color-border-dark);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .logo-text {
  font-size: 20px;
}
.footer-desc {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 260px;
}
.social-links {
  display: flex;
  gap: 12px;
}
.social-links a {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
}
.social-links a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0,194,168,0.08);
}
.social-links svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  transition: color var(--transition-base), padding-left var(--transition-base);
}
.footer-col ul a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  line-height: 1.6;
}
.footer-contact svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-top: 3px;
  color: var(--color-primary);
}
.footer-bottom {
  border-top: 1px solid var(--color-border-dark);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  color: rgba(255,255,255,0.35);
  font-size: 13px;
}
.footer-bottom a {
  color: rgba(255,255,255,0.35);
}
.footer-bottom a:hover { color: var(--color-primary); }

/* ===== Media Queries ===== */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .header-actions .btn-sm { display: none; }
  .nav-toggle { display: flex; }
  .header-inner {
    height: 64px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 768px) {
  .page-title { font-size: 36px; }
  .category-intro { padding: 48px 0; }
  .category-cards { padding: 0 0 64px; }
  .cta-section { padding: 48px 0; }
  .cta-title { font-size: 24px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
@media (max-width: 640px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .header-center {
    flex-direction: column;
    gap: 10px;
  }
  .header-search {
    max-width: none;
    order: 3;
    width: 100%;
  }
  .page-banner { padding: 56px 0 48px; }
  .page-title { font-size: 32px; }
  .section-title { font-size: 26px; }
  .article-card { margin-bottom: 20px; }
  .card-body { padding: 20px; }
  .cta-btn-wrap { flex-direction: column; }
  .cta-btn-wrap .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
  html { scroll-behavior: auto; }
}

/* roulang page: article */
:root {
            --primary: #00C2A8;
            --primary-dark: #00A68F;
            --accent: #C9A54A;
            --bg-dark: #0B0F14;
            --bg-dark-2: #151A21;
            --bg-light: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1A1E26;
            --text-secondary: #5B6472;
            --border: #E4E8EE;
            --border-dark: rgba(255,255,255,0.08);
            --radius-card: 12px;
            --radius-img: 16px;
            --radius-btn: 999px;
            --radius-small: 6px;
            --shadow-sm: 0 2px 8px rgba(11,15,20,0.04);
            --shadow-hover: 0 12px 32px rgba(11,15,20,0.10);
            --shadow-nav: 0 4px 24px rgba(0,0,0,0.12);
            --container-max: 1200px;
            --space-section: 96px;
            --space-mobile: 64px;
        }

        *,
        *::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-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 20, 0.95);
            border-bottom: 1px solid var(--border-dark);
            box-shadow: var(--shadow-nav);
            transition: background 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 15, 20, 0.98);
        }

        .header-row {
            display: flex;
            align-items: center;
            gap: 24px;
            height: 80px;
            transition: height 0.3s ease;
        }

        .site-header.scrolled .header-row {
            height: 64px;
        }

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

        .logo-icon {
            width: 32px;
            height: 32px;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .logo-en {
            font-size: 11px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.5);
            margin-left: 6px;
            letter-spacing: 0.14em;
            vertical-align: middle;
        }

        .search-box {
            flex: 1;
            max-width: 520px;
            height: 44px;
            display: flex;
            align-items: center;
            background: var(--bg-dark-2);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-btn);
            padding: 0 16px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            background: #1A2026;
            box-shadow: 0 0 0 3px rgba(0, 194, 168, 0.25);
        }

        .search-icon {
            width: 20px;
            height: 20px;
            color: rgba(255, 255, 255, 0.4);
            flex-shrink: 0;
        }

        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            color: #fff;
            font-size: 15px;
            padding: 10px 12px;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        .search-clear {
            background: none;
            border: none;
            color: rgba(255, 255, 255, 0.3);
            padding: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            opacity: 0;
            transition: opacity 0.2s, color 0.2s;
        }

        .search-box input:valid ~ .search-clear {
            opacity: 1;
        }

        .search-clear:hover {
            color: var(--primary);
        }

        .search-clear svg {
            width: 16px;
            height: 16px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
            flex-shrink: 0;
        }

        .nav-links a {
            position: relative;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            transition: color 0.2s, background 0.2s;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            border-radius: var(--radius-btn);
            padding: 16px 32px;
            font-size: 15px;
            transition: all 0.2s ease;
            border: none;
            line-height: 1.2;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #0B0F14;
        }

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

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(0, 194, 168, 0.08);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
            width: 100%;
        }

        .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);
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 80px;
            left: 0;
            right: 0;
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-dark);
            padding: 16px 24px 24px;
            z-index: 99;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-nav-panel.open {
            display: flex;
        }

        .mobile-nav-panel a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            padding: 12px 8px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-nav-panel a:hover {
            color: var(--primary);
        }

        .mobile-nav-panel a.active {
            color: var(--primary);
        }

        .mobile-nav-panel .btn {
            margin-top: 12px;
        }

        .breadcrumb-wrap {
            background: var(--bg-dark);
            border-bottom: 1px solid var(--border-dark);
            padding: 20px 0;
        }

        .breadcrumb {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

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

        .breadcrumb a:hover {
            text-decoration: underline;
        }

        .breadcrumb .sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.3);
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.9);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 320px;
            vertical-align: bottom;
            display: inline-block;
        }

        .article-page {
            padding: 64px 0 48px;
        }

        .article-header {
            margin-bottom: 28px;
        }

        .article-header h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: -0.02em;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

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

        .article-meta-item svg {
            width: 16px;
            height: 16px;
            opacity: 0.7;
        }

        .article-category-badge {
            display: inline-block;
            background: rgba(0, 194, 168, 0.10);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-small);
        }

        .article-cover {
            width: 100%;
            aspect-ratio: 16 / 8;
            object-fit: cover;
            border-radius: var(--radius-img);
            margin-bottom: 36px;
            box-shadow: var(--shadow-sm);
        }

        .article-content-wrap {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 48px;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 2em 0 0.8em;
            line-height: 1.4;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 1.8em 0 0.6em;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(0, 194, 168, 0.06);
            padding: 16px 24px;
            border-radius: 0 8px 8px 0;
            margin: 1.5em 0;
            color: var(--text-secondary);
        }

        .article-body ul,
        .article-body ol {
            margin: 1em 0 1.5em;
            padding-left: 1.4em;
        }

        .article-body li {
            margin-bottom: 0.4em;
        }

        .article-body img {
            border-radius: var(--radius-img);
            max-width: 100%;
            height: auto;
            margin: 1.5em 0;
        }

        .article-body a {
            color: var(--primary-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 14px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body th {
            background: var(--bg-light);
            font-weight: 700;
        }

        .article-body pre {
            background: var(--bg-dark);
            color: #e0e0e0;
            padding: 20px;
            border-radius: 10px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.6;
            margin: 1.5em 0;
        }

        .article-body code {
            font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
            background: rgba(0, 194, 168, 0.08);
            color: var(--primary-dark);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }

        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        .content-not-found {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 20px;
            text-align: center;
            border: 2px dashed var(--border);
            border-radius: var(--radius-card);
        }

        .content-not-found svg {
            width: 48px;
            height: 48px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .content-not-found p {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        .article-cta {
            margin-top: 40px;
            padding: 24px 32px;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .article-cta p {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin: 0;
        }

        .article-cta a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 15px;
        }

        .article-cta a:hover {
            color: var(--primary);
        }

        .article-cta a svg {
            width: 16px;
            height: 16px;
            transition: transform 0.2s ease;
        }

        .article-cta a:hover svg {
            transform: translateX(3px);
        }

        .related-section {
            padding: 0 0 var(--space-section);
        }

        .section-head {
            margin-bottom: 32px;
        }

        .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            letter-spacing: -0.02em;
        }

        .related-card {
            display: block;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            height: 100%;
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }

        .related-img {
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

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

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

        .related-date {
            display: inline-block;
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            font-weight: 700;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .related-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s ease;
        }

        .related-card:hover .related-title {
            color: var(--primary-dark);
        }

        .back-to-list {
            margin-top: 48px;
            text-align: center;
        }

        .site-footer {
            background: var(--bg-dark);
            padding: 72px 0 32px;
            border-top: 1px solid var(--border-dark);
        }

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

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
        }

        .footer-logo .logo-text {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
        }

        .footer-logo .logo-en {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 280px;
        }

        .social-links {
            display: flex;
            gap: 12px;
        }

        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: rgba(255, 255, 255, 0.6);
            transition: border-color 0.2s, color 0.2s, background 0.2s;
        }

        .social-links a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: rgba(0, 194, 168, 0.08);
        }

        .social-links svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-col ul a:hover {
            color: var(--primary);
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-contact svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
            margin-top: 4px;
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            color: rgba(255, 255, 255, 0.35);
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .header-row {
                gap: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .header-row {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
                gap: 12px;
            }

            .site-header.scrolled .header-row {
                height: auto;
            }

            .nav-links {
                display: none;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .search-box {
                order: 10;
                flex-basis: 100%;
                max-width: 100%;
            }

            .header-cta {
                display: none;
            }

            .mobile-nav-panel {
                top: 68px;
            }

            .article-page {
                padding: 40px 0 32px;
            }

            .article-header h1 {
                font-size: 30px;
            }

            .article-content-wrap {
                padding: 32px 24px;
            }

            .article-cover {
                aspect-ratio: 16 / 10;
            }

            .article-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }

            .footer-bottom {
                text-align: left;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .related-body {
                padding: 16px 16px 20px;
            }

            .related-title {
                font-size: 16px;
            }

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

            .back-to-list {
                margin-top: 32px;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 20px;
            }

            .logo-en {
                font-size: 10px;
            }

            .article-content-wrap {
                padding: 24px 16px;
            }

            .article-body {
                font-size: 15px;
            }

            .article-body h2 {
                font-size: 21px;
            }

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

            .article-cta {
                padding: 20px 16px;
            }
        }

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