/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --color-primary: #e8541e;
  --color-primary-dark: #c94414;
  --color-primary-light: #f06a32;
  --color-accent: #f5a623;
  --color-accent-dark: #d48c1a;
  --color-bg: #0e0e12;
  --color-bg-alt: #16161d;
  --color-bg-card: #1c1c26;
  --color-bg-overlay: rgba(14,14,18,0.82);
  --color-text: #f0f0f0;
  --color-text-muted: #a0a0b0;
  --color-text-dim: #6e6e7e;
  --color-border: #2a2a38;
  --color-border-light: #3a3a4a;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.24);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.32);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.48);
  --shadow-glow: 0 0 30px rgba(232,84,30,0.18);
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 32px;
  --spacing-xl: 64px;
  --spacing-2xl: 96px;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --transition: 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  --max-width: 1200px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}
a { color: var(--color-primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: var(--radius-sm); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--color-text); }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}
@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-md); }
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(14,14,18,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(14,14,18,0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--spacing-lg);
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
}
.logo i {
  font-size: 1.6rem;
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo span { background: linear-gradient(135deg, var(--color-text), var(--color-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex: 1;
  justify-content: flex-end;
}
.nav-main a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
  white-space: nowrap;
}
.nav-main a:hover { color: var(--color-text); background: rgba(255,255,255,0.04); }
.nav-main a.active { color: var(--color-primary-light); }
.nav-main a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--spacing-sm);
  right: var(--spacing-sm);
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.nav-search {
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  padding: 0 var(--spacing-md);
  height: 38px;
  min-width: 180px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.nav-search:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(232,84,30,0.12);
}
.nav-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-size: 0.9rem;
  padding: var(--spacing-xs) 0;
}
.nav-search input::placeholder { color: var(--color-text-dim); }
.nav-search button {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  padding: var(--spacing-xs);
  transition: color var(--transition);
}
.nav-search button:hover { color: var(--color-primary-light); }
.menu-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--color-text);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.menu-toggle:hover { background: rgba(255,255,255,0.06); }
@media (max-width: 920px) {
  .nav-main { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--color-bg); border-bottom: 1px solid var(--color-border); flex-direction: column; padding: var(--spacing-md) var(--spacing-lg); gap: var(--spacing-sm); box-shadow: var(--shadow-lg); }
  .nav-main.open { display: flex; }
  .nav-main a { width: 100%; padding: var(--spacing-sm) var(--spacing-md); }
  .nav-main a.active::after { display: none; }
  .nav-main a.active { background: rgba(232,84,30,0.12); border-radius: var(--radius-sm); }
  .nav-search { min-width: 140px; }
  .menu-toggle { display: block; }
  .header-inner { height: 60px; }
}
@media (max-width: 520px) {
  .nav-search { min-width: 100px; }
  .nav-search input { width: 80px; }
  .logo { font-size: 1.1rem; }
  .header-inner { gap: var(--spacing-sm); }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-bg) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  isolation: isolate;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-bg-overlay);
  background: linear-gradient(160deg, rgba(14,14,18,0.88) 30%, rgba(232,84,30,0.28) 100%);
  z-index: 1;
}
.hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,84,30,0.18), transparent 70%);
  top: -10%;
  right: -8%;
  z-index: 0;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: var(--spacing-xl) var(--spacing-lg);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(232,84,30,0.15);
  border: 1px solid rgba(232,84,30,0.3);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.3px;
}
.hero-badge i { font-size: 0.75rem; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-text) 40%, var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 14px 34px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(232,84,30,0.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(232,84,30,0.45); color: #fff; }
.btn-primary:active { transform: translateY(-1px); }
.btn-outline {
  border-color: var(--color-border-light);
  color: var(--color-text);
  background: rgba(255,255,255,0.04);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary-light); background: rgba(232,84,30,0.08); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-lg { padding: 18px 44px; font-size: 1.1rem; }
@media (max-width: 768px) {
  .hero { min-height: 70vh; }
  .hero h1 { font-size: clamp(2rem, 8vw, 3rem); }
  .hero p { font-size: 1rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 320px; justify-content: center; }
}

/* ===== Section共用 ===== */
.section {
  padding: var(--spacing-2xl) 0;
}
.section-alt { background: var(--color-bg-alt); }
.section-dark { background: var(--color-bg); }
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}
.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}
.section-header p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}
.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 4px;
  margin: var(--spacing-md) auto var(--spacing-lg);
}

/* ===== 特色卡片 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}
.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-lg);
  transition: all var(--transition);
  text-align: center;
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(232,84,30,0.15), rgba(245,166,35,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  font-size: 1.6rem;
  color: var(--color-primary-light);
}
.feature-card h3 { font-size: 1.25rem; margin-bottom: var(--spacing-sm); }
.feature-card p { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.65; }

/* ===== 分类入口 ===== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  min-height: 240px;
  display: flex;
  flex-direction: column;
}
.category-card:hover { transform: translateY(-5px); border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.category-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  transition: transform var(--transition);
}
.category-card:hover img { transform: scale(1.04); }
.category-card-body {
  padding: var(--spacing-md) var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.category-card-body h3 { font-size: 1.2rem; margin-bottom: var(--spacing-xs); }
.category-card-body p { color: var(--color-text-muted); font-size: 0.9rem; }
.category-tag {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  background: rgba(232,84,30,0.85);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  backdrop-filter: blur(4px);
}

/* ===== 资讯列表 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}
.news-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover { transform: translateY(-5px); border-color: var(--color-border-light); box-shadow: var(--shadow-md); }
.news-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform var(--transition);
}
.news-card:hover img { transform: scale(1.03); }
.news-card-body {
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-bottom: var(--spacing-sm);
}
.news-card-meta .tag {
  background: rgba(232,84,30,0.12);
  color: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.75rem;
}
.news-card h3 { font-size: 1.1rem; margin-bottom: var(--spacing-sm); line-height: 1.4; }
.news-card h3 a { color: var(--color-text); }
.news-card h3 a:hover { color: var(--color-primary-light); }
.news-card p { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.6; flex: 1; }
.news-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-dim);
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-text-muted);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-border);
}

/* ===== 统计数据 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-lg);
  text-align: center;
}
.stat-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-md);
  transition: all var(--transition);
}
.stat-item:hover { border-color: var(--color-primary); box-shadow: var(--shadow-glow); transform: translateY(-3px); }
.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.stat-label { color: var(--color-text-muted); font-size: 0.95rem; margin-top: var(--spacing-xs); }

/* ===== 流程步骤 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-lg);
  counter-reset: step;
}
.step-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  position: relative;
  transition: all var(--transition);
  counter-increment: step;
}
.step-card:hover { border-color: var(--color-primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto var(--spacing-md);
}
.step-card h3 { font-size: 1.15rem; margin-bottom: var(--spacing-sm); }
.step-card p { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--color-border-light); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  background: transparent;
  transition: background var(--transition);
  gap: var(--spacing-md);
}
.faq-question:hover { background: rgba(255,255,255,0.02); }
.faq-question i { color: var(--color-primary-light); transition: transform var(--transition); font-size: 0.85rem; flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 var(--spacing-lg);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* ===== CTA ===== */
.cta-section {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.cta-box {
  background: linear-gradient(145deg, rgba(232,84,30,0.08), rgba(245,166,35,0.04));
  border: 1px solid rgba(232,84,30,0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}
.cta-box h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin-bottom: var(--spacing-sm); }
.cta-box p { color: var(--color-text-muted); font-size: 1.05rem; margin-bottom: var(--spacing-lg); max-width: 520px; margin-left: auto; margin-right: auto; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}
.footer-brand .logo { font-size: 1.2rem; margin-bottom: var(--spacing-sm); }
.footer-brand p { color: var(--color-text-muted); font-size: 0.9rem; max-width: 280px; line-height: 1.7; }
.footer-col h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: var(--spacing-md); color: var(--color-text); }
.footer-col a {
  display: block;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--color-primary-light); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-dim);
}
.footer-bottom-links { display: flex; gap: var(--spacing-md); }
.footer-bottom-links a { color: var(--color-text-dim); }
.footer-bottom-links a:hover { color: var(--color-primary-light); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ===== 辅助 ===== */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.gap-md { gap: var(--spacing-md); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ===== 响应式微调 ===== */
@media (max-width: 1024px) {
  .section { padding: var(--spacing-xl) 0; }
  .hero { min-height: 80vh; }
}
@media (max-width: 768px) {
  .section { padding: var(--spacing-lg) 0; }
  .hero { min-height: 65vh; }
  .features-grid, .categories-grid, .news-grid, .stats-grid, .steps-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 1.6rem; }
}
@media (max-width: 520px) {
  .hero { min-height: 60vh; }
  .hero h1 { font-size: 1.8rem; }
  .cta-box { padding: var(--spacing-lg) var(--spacing-md); }
  .stat-number { font-size: 2rem; }
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
:root {
  --clr-primary: #e63946;
  --clr-primary-dark: #c1121f;
  --clr-primary-light: #f8d7da;
  --clr-secondary: #1d3557;
  --clr-secondary-light: #457b9d;
  --clr-accent: #f4a261;
  --clr-accent-glow: #e9c46a;
  --clr-bg: #0b0f1a;
  --clr-bg-card: #141b2b;
  --clr-bg-card-hover: #1c2640;
  --clr-bg-section-alt: #101624;
  --clr-text: #f1f3f9;
  --clr-text-dim: #8892b0;
  --clr-text-muted: #5a6380;
  --clr-border: #1e2a45;
  --clr-border-light: #2a3a5c;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.6);
  --shadow-primary: 0 4px 20px rgba(230,57,70,0.3);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --max-width: 1200px;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:var(--font-sans);background:var(--clr-bg);color:var(--clr-text);line-height:1.7;font-size:16px;min-height:100vh;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-md)}
a{color:var(--clr-primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--clr-accent)}
a:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:4px}
button{cursor:pointer;font-family:inherit;border:none;background:none;color:inherit;transition:var(--transition)}
button:focus-visible{outline:2px solid var(--clr-primary);outline-offset:2px;border-radius:var(--radius-sm)}
input,textarea{font-family:inherit;background:var(--clr-bg-card);border:1px solid var(--clr-border);color:var(--clr-text);border-radius:var(--radius-sm);padding:0.6rem 1rem;transition:var(--transition)}
input:focus,textarea:focus{outline:none;border-color:var(--clr-primary);box-shadow:0 0 0 3px rgba(230,57,70,0.15)}
ul{list-style:none}
h1,h2,h3,h4,h5,h6{line-height:1.25;font-weight:700;color:var(--clr-text)}
h1{font-size:clamp(2.2rem,6vw,3.8rem);letter-spacing:-0.02em}
h2{font-size:clamp(1.6rem,4vw,2.6rem);letter-spacing:-0.01em}
h3{font-size:clamp(1.2rem,2.5vw,1.6rem)}
h4{font-size:1.1rem}
p{margin-bottom:1rem;color:var(--clr-text-dim)}
/* ===== Container ===== */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-md)}
@media(max-width:768px){.container{padding:0 var(--space-sm)}}
/* ===== Utility ===== */
.section{padding:var(--space-xl) 0}
.section-alt{background:var(--clr-bg-section-alt)}
.section-title{text-align:center;margin-bottom:var(--space-lg)}
.section-title h2{margin-bottom:0.75rem}
.section-title p{max-width:640px;margin:0 auto;font-size:1.05rem}
.tag{display:inline-block;background:rgba(230,57,70,0.12);color:var(--clr-primary);padding:0.2rem 0.8rem;border-radius:100px;font-size:0.8rem;font-weight:600;letter-spacing:0.3px;border:1px solid rgba(230,57,70,0.2)}
.tag-accent{background:rgba(244,162,97,0.12);color:var(--clr-accent);border-color:rgba(244,162,97,0.2)}
.btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.7rem 1.8rem;border-radius:100px;font-weight:600;font-size:0.95rem;transition:var(--transition);border:1px solid transparent}
.btn-primary{background:var(--clr-primary);color:#fff !important}
.btn-primary:hover{background:var(--clr-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-primary)}
.btn-secondary{background:transparent;border-color:var(--clr-border-light);color:var(--clr-text) !important}
.btn-secondary:hover{background:var(--clr-bg-card);border-color:var(--clr-primary);transform:translateY(-2px)}
.btn-outline{border-color:var(--clr-primary);color:var(--clr-primary) !important;background:transparent}
.btn-outline:hover{background:var(--clr-primary);color:#fff !important;transform:translateY(-2px)}
.btn-lg{padding:0.9rem 2.4rem;font-size:1.05rem}
/* ===== Header / Nav ===== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(11,15,26,0.92);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--clr-border);box-shadow:0 4px 30px rgba(0,0,0,0.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:var(--space-sm)}
.logo{display:flex;align-items:center;gap:0.5rem;font-size:1.3rem;font-weight:800;color:var(--clr-text);white-space:nowrap}
.logo i{color:var(--clr-primary);font-size:1.4rem}
.logo span{background:linear-gradient(135deg,#f1f3f9,#e63946);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-main{display:flex;align-items:center;gap:0.25rem;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.nav-main::-webkit-scrollbar{display:none}
.nav-main a{display:inline-flex;align-items:center;padding:0.4rem 1rem;border-radius:100px;font-size:0.9rem;font-weight:500;color:var(--clr-text-dim);white-space:nowrap;transition:var(--transition);position:relative}
.nav-main a:hover{color:var(--clr-text);background:rgba(255,255,255,0.06)}
.nav-main a.active{color:#fff;background:var(--clr-primary);box-shadow:var(--shadow-primary)}
.nav-search{display:flex;align-items:center;gap:0.25rem;background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:100px;padding:0.2rem 0.2rem 0.2rem 1rem;flex-shrink:0;transition:var(--transition)}
.nav-search:focus-within{border-color:var(--clr-primary);box-shadow:0 0 0 3px rgba(230,57,70,0.1)}
.nav-search input{background:transparent;border:none;padding:0.3rem 0.5rem;font-size:0.85rem;color:var(--clr-text);width:130px;outline:none}
.nav-search input::placeholder{color:var(--clr-text-muted)}
.nav-search button{background:var(--clr-primary);color:#fff;border-radius:100px;width:32px;height:32px;display:grid;place-items:center;font-size:0.85rem;transition:var(--transition)}
.nav-search button:hover{background:var(--clr-primary-dark)}
.mobile-toggle{display:none;background:transparent;border:1px solid var(--clr-border);border-radius:var(--radius-sm);width:40px;height:40px;place-items:center;font-size:1.2rem;color:var(--clr-text);cursor:pointer;transition:var(--transition)}
.mobile-toggle:hover{background:var(--clr-bg-card);border-color:var(--clr-primary)}
@media(max-width:820px){
  .nav-main{display:none;position:absolute;top:68px;left:0;right:0;background:rgba(11,15,26,0.98);backdrop-filter:blur(18px);flex-direction:column;padding:var(--space-sm);border-bottom:1px solid var(--clr-border);box-shadow:var(--shadow-lg);gap:0.25rem;max-height:70vh;overflow-y:auto}
  .nav-main.open{display:flex}
  .nav-main a{width:100%;padding:0.7rem 1rem;border-radius:var(--radius-sm)}
  .nav-search{width:100%;margin-top:0.5rem}
  .nav-search input{width:100%}
  .mobile-toggle{display:grid}
}
@media(max-width:520px){
  .header-inner{height:60px}
  .logo{font-size:1.1rem}
  .logo i{font-size:1.1rem}
  .nav-search input{width:90px}
}
/* ===== Hero ===== */
.hero-category{position:relative;padding:var(--space-xl) 0;min-height:50vh;display:flex;align-items:center;overflow:hidden}
.hero-category::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;filter:brightness(0.35) saturate(1.2);transform:scale(1.02);z-index:0}
.hero-category::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,15,26,0.85) 0%,rgba(11,15,26,0.4) 60%,rgba(230,57,70,0.15) 100%);z-index:1}
.hero-category .container{position:relative;z-index:2}
.hero-category .tag{background:rgba(230,57,70,0.2);border-color:rgba(230,57,70,0.3);font-size:0.85rem;padding:0.3rem 1rem;margin-bottom:var(--space-sm)}
.hero-category h1{font-size:clamp(2.4rem,6vw,4rem);margin-bottom:1rem;text-shadow:0 2px 20px rgba(0,0,0,0.3)}
.hero-category h1 span{background:linear-gradient(135deg,#f1f3f9,#e63946);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-category p{font-size:1.1rem;max-width:640px;color:var(--clr-text-dim);margin-bottom:var(--space-md)}
.hero-actions{display:flex;flex-wrap:wrap;gap:var(--space-sm)}
@media(max-width:768px){
  .hero-category{min-height:40vh;padding:var(--space-lg) 0}
  .hero-category p{font-size:1rem}
}
/* ===== Intro / Highlights ===== */
.highlight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}
.highlight-card{background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:var(--radius-md);padding:var(--space-md);text-align:center;transition:var(--transition)}
.highlight-card:hover{transform:translateY(-6px);border-color:var(--clr-primary);box-shadow:var(--shadow-md)}
.highlight-card .icon{font-size:2.2rem;color:var(--clr-primary);margin-bottom:var(--space-sm);display:inline-block}
.highlight-card h3{margin-bottom:0.5rem;font-size:1.15rem}
.highlight-card p{font-size:0.92rem;margin-bottom:0;color:var(--clr-text-dim)}
@media(max-width:820px){.highlight-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.highlight-grid{grid-template-columns:1fr}}
/* ===== Category Cards ===== */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--space-md)}
.cat-card{background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition);position:relative;display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-6px);border-color:var(--clr-primary);box-shadow:var(--shadow-md)}
.cat-card .card-img{height:180px;overflow:hidden;position:relative}
.cat-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.cat-card:hover .card-img img{transform:scale(1.06)}
.cat-card .card-img .overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(11,15,26,0.7),transparent 60%)}
.cat-card .card-body{padding:var(--space-sm) var(--space-md) var(--space-md);flex:1;display:flex;flex-direction:column}
.cat-card .card-body .tag{align-self:flex-start;margin-bottom:0.5rem}
.cat-card .card-body h3{font-size:1.15rem;margin-bottom:0.4rem}
.cat-card .card-body p{font-size:0.9rem;margin-bottom:var(--space-sm);flex:1}
.cat-card .card-body .btn{align-self:flex-start}
/* ===== Latest Guides ===== */
.guide-list{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-md)}
.guide-item{display:flex;gap:var(--space-sm);background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:var(--radius-md);padding:var(--space-sm);transition:var(--transition);align-items:flex-start}
.guide-item:hover{border-color:var(--clr-primary);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.guide-item .thumb{width:100px;height:75px;flex-shrink:0;border-radius:var(--radius-sm);overflow:hidden}
.guide-item .thumb img{width:100%;height:100%;object-fit:cover}
.guide-item .info{flex:1;min-width:0}
.guide-item .info .meta{font-size:0.78rem;color:var(--clr-text-muted);display:flex;gap:0.75rem;margin-bottom:0.2rem}
.guide-item .info .meta i{margin-right:0.2rem}
.guide-item .info h4{font-size:0.95rem;margin-bottom:0.15rem;line-height:1.4}
.guide-item .info p{font-size:0.82rem;color:var(--clr-text-dim);margin-bottom:0}
@media(max-width:820px){.guide-list{grid-template-columns:1fr}}
@media(max-width:520px){.guide-item{flex-direction:column}.guide-item .thumb{width:100%;height:140px}}
/* ===== Stats ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md);text-align:center}
.stat-card{background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:var(--radius-md);padding:var(--space-md) var(--space-sm);transition:var(--transition)}
.stat-card:hover{border-color:var(--clr-accent);transform:translateY(-4px)}
.stat-card .number{font-size:2.4rem;font-weight:800;background:linear-gradient(135deg,#f1f3f9,#e63946);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.2}
.stat-card .label{font-size:0.9rem;color:var(--clr-text-dim);margin-top:0.25rem}
@media(max-width:820px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.stats-grid{grid-template-columns:1fr 1fr}}
/* ===== Steps ===== */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md);counter-reset:step}
.step-card{background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:var(--radius-md);padding:var(--space-md);text-align:center;position:relative;transition:var(--transition)}
.step-card:hover{border-color:var(--clr-secondary-light);transform:translateY(-4px)}
.step-card::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:30px;height:30px;background:var(--clr-primary);color:#fff;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:0.9rem;box-shadow:0 0 20px rgba(230,57,70,0.3)}
.step-card .icon{font-size:2rem;color:var(--clr-accent);margin:0.5rem 0 var(--space-xs)}
.step-card h4{font-size:1rem;margin-bottom:0.3rem}
.step-card p{font-size:0.85rem;color:var(--clr-text-dim);margin-bottom:0}
@media(max-width:820px){.steps-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps-grid{grid-template-columns:1fr 1fr}}
/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:var(--space-sm)}
.faq-item{background:var(--clr-bg-card);border:1px solid var(--clr-border);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--clr-border-light)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm) var(--space-md);font-weight:600;cursor:pointer;list-style:none;transition:var(--transition);color:var(--clr-text)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--clr-primary);transition:transform 0.3s ease;font-size:0.9rem}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-item[open] summary{background:rgba(230,57,70,0.05)}
.faq-item .answer{padding:0 var(--space-md) var(--space-md);color:var(--clr-text-dim);font-size:0.95rem;line-height:1.7}
.faq-item .answer p:last-child{margin-bottom:0}
/* ===== CTA ===== */
.cta-section{position:relative;overflow:hidden;padding:var(--space-xl) 0}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center / cover no-repeat;filter:brightness(0.2) saturate(0.8);z-index:0}
.cta-section::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(230,57,70,0.15),rgba(11,15,26,0.9) 60%);z-index:1}
.cta-section .container{position:relative;z-index:2;text-align:center}
.cta-section h2{font-size:clamp(1.8rem,4vw,2.8rem);margin-bottom:0.75rem}
.cta-section p{max-width:560px;margin:0 auto var(--space-md);color:var(--clr-text-dim);font-size:1.05rem}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-sm)}
/* ===== Footer ===== */
.site-footer{background:var(--clr-bg-card);border-top:1px solid var(--clr-border);padding:var(--space-lg) 0 var(--space-md)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-lg);margin-bottom:var(--space-lg)}
.footer-brand .logo{font-size:1.2rem;margin-bottom:var(--space-sm)}
.footer-brand p{font-size:0.9rem;color:var(--clr-text-dim);max-width:360px;line-height:1.7;margin-bottom:0}
.footer-col h4{font-size:0.95rem;margin-bottom:var(--space-sm);color:var(--clr-text);font-weight:600}
.footer-col a{display:block;padding:0.3rem 0;font-size:0.88rem;color:var(--clr-text-dim);transition:var(--transition)}
.footer-col a:hover{color:var(--clr-primary);padding-left:4px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--space-sm);padding-top:var(--space-md);border-top:1px solid var(--clr-border);font-size:0.85rem;color:var(--clr-text-muted)}
.footer-bottom a{color:var(--clr-text-dim);transition:var(--transition)}
.footer-bottom a:hover{color:var(--clr-primary)}
.footer-bottom-links{display:flex;align-items:center;gap:0.5rem}
.color-text-dim{color:var(--clr-text-muted)}
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:var(--space-md)}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:var(--space-md)}
  .footer-bottom{flex-direction:column;text-align:center}
}
/* ===== Responsive extras ===== */
@media(max-width:520px){
  .section{padding:var(--space-lg) 0}
  .hero-category h1{font-size:1.8rem}
  .btn-lg{padding:0.7rem 1.6rem;font-size:0.9rem}
}
/* ===== Animations ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-up{animation:fadeUp 0.6s ease forwards}
.fade-up-d1{animation-delay:0.1s}
.fade-up-d2{animation-delay:0.2s}
.fade-up-d3{animation-delay:0.3s}
.fade-up-d4{animation-delay:0.4s}
/* ===== Scrollbar ===== */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--clr-bg)}
::-webkit-scrollbar-thumb{background:var(--clr-border);border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--clr-text-muted)}

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --color-primary: #e8202a;
  --color-primary-dark: #c41820;
  --color-primary-light: #ff4d56;
  --color-secondary: #ff6b35;
  --color-accent: #ffd700;
  --color-bg: #0b0e17;
  --color-bg-alt: #111827;
  --color-bg-card: #1a1f2e;
  --color-bg-card-hover: #222a3e;
  --color-text: #f1f3f6;
  --color-text-dim: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #2a3344;
  --color-border-light: #3a4558;
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(232,32,42,0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
button, input, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--color-text) 60%, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-sub {
  text-align: center;
  color: var(--color-text-dim);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto 48px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  background: var(--color-primary);
  color: #fff;
}
.btn:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn-outline {
  background: transparent;
  border: 2px solid var(--color-border-light);
  color: var(--color-text);
}
.btn-outline:hover { border-color: var(--color-primary); background: rgba(232,32,42,0.08); color: var(--color-primary-light); }
.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(232,32,42,0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(232,32,42,0.2);
}
.tag-secondary { background: rgba(255,107,53,0.15); color: var(--color-secondary); border-color: rgba(255,107,53,0.2); }
.tag-accent { background: rgba(255,215,0,0.12); color: var(--color-accent); border-color: rgba(255,215,0,0.2); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
}
.fade-in { animation: fadeIn 0.6s ease forwards; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Header & Navigation ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(11,14,23,0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  transition: var(--transition);
}
.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.logo i { color: var(--color-primary); font-size: 1.5rem; }
.logo span { background: linear-gradient(135deg, #fff 50%, var(--color-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-main {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.nav-main::-webkit-scrollbar { display: none; }
.nav-main a {
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-dim);
  white-space: nowrap;
  transition: var(--transition);
  position: relative;
}
.nav-main a:hover { color: var(--color-text); background: rgba(255,255,255,0.06); }
.nav-main a.active { color: #fff; background: var(--color-primary); }
.nav-main a.active::after { display: none; }
.nav-search {
  display: flex;
  align-items: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  padding: 0 4px 0 16px;
  transition: var(--transition);
  flex-shrink: 0;
}
.nav-search:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(232,32,42,0.15); }
.nav-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--color-text);
  padding: 8px 0;
  min-width: 140px;
  font-size: 0.85rem;
}
.nav-search input::placeholder { color: var(--color-text-muted); }
.nav-search button {
  background: var(--color-primary);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-search button:hover { background: var(--color-primary-dark); }
.mobile-toggle { display: none; background: none; border: none; color: var(--color-text); font-size: 1.5rem; cursor: pointer; padding: 4px; }

/* ===== Article Banner ===== */
.article-banner {
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 40px;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  position: relative;
  overflow: hidden;
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  opacity: 0.08;
  pointer-events: none;
}
.article-banner .container { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-dim); }
.breadcrumb a:hover { color: var(--color-primary-light); }
.breadcrumb i { font-size: 0.7rem; color: var(--color-text-muted); }
.article-meta-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.article-meta-header .tag { font-size: 0.8rem; }
.article-meta-header span { color: var(--color-text-dim); font-size: 0.85rem; display: flex; align-items: center; gap: 6px; }
.article-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 50%, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.article-desc {
  font-size: 1.1rem;
  color: var(--color-text-dim);
  max-width: 780px;
  line-height: 1.7;
}

/* ===== Article Content ===== */
.article-content-wrap {
  padding: 48px 0 80px;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
}
.article-body {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--color-border);
}
.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 36px 0 16px;
  color: var(--color-text);
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--color-text);
}
.article-body p {
  margin-bottom: 18px;
  color: var(--color-text-dim);
  line-height: 1.85;
}
.article-body ul, .article-body ol {
  margin: 16px 0 20px;
  padding-left: 24px;
  color: var(--color-text-dim);
}
.article-body li { margin-bottom: 8px; position: relative; }
.article-body ul li::before {
  content: '';
  position: absolute;
  left: -18px;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
}
.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: rgba(232,32,42,0.06);
  padding: 20px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-dim);
  font-style: italic;
}
.article-body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  width: 100%;
  object-fit: cover;
}
.article-body a { color: var(--color-primary-light); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--color-accent); }
.article-footer-meta {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-share { display: flex; align-items: center; gap: 12px; color: var(--color-text-dim); font-size: 0.9rem; }
.article-share a { color: var(--color-text-dim); font-size: 1.2rem; }
.article-share a:hover { color: var(--color-primary-light); }

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.sidebar-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--color-border);
}
.sidebar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
}
.sidebar-card h3 i { color: var(--color-primary); }
.sidebar-list { display: flex; flex-direction: column; gap: 12px; }
.sidebar-list a {
  display: flex;
  gap: 12px;
  padding: 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  align-items: flex-start;
}
.sidebar-list a:hover { background: var(--color-bg-card-hover); }
.sidebar-list img {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
}
.sidebar-list .info { flex: 1; min-width: 0; }
.sidebar-list .info .title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}
.sidebar-list .info .date { font-size: 0.75rem; color: var(--color-text-muted); margin-top: 4px; display: block; }
.sidebar-cta { text-align: center; }
.sidebar-cta p { color: var(--color-text-dim); font-size: 0.9rem; margin-bottom: 16px; }
.sidebar-cta .btn { width: 100%; justify-content: center; }

/* ===== Related Section ===== */
.related-section {
  padding: 60px 0 80px;
  background: var(--color-bg-alt);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.related-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}
.related-card:hover { transform: translateY(-4px); border-color: var(--color-border-light); box-shadow: var(--shadow-md); }
.related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
.related-card .body { padding: 18px 20px; }
.related-card .body .tag { margin-bottom: 8px; }
.related-card .body h4 { font-size: 1rem; font-weight: 600; color: var(--color-text); margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .body p { font-size: 0.85rem; color: var(--color-text-dim); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .body .date { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 8px; display: block; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  opacity: 0.06;
  pointer-events: none;
}
.cta-box {
  position: relative;
  z-index: 1;
  text-align: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  max-width: 720px;
  margin: 0 auto;
}
.cta-box h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.cta-box p { color: var(--color-text-dim); font-size: 1.05rem; margin-bottom: 28px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: var(--color-text-dim); font-size: 0.9rem; line-height: 1.7; max-width: 360px; }
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--color-text-dim);
  font-size: 0.88rem;
  padding: 4px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--color-primary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.footer-bottom-links { display: flex; align-items: center; gap: 12px; }
.footer-bottom-links a { color: var(--color-text-dim); }
.footer-bottom-links a:hover { color: var(--color-primary-light); }

/* ===== Not Found ===== */
.not-found-wrap {
  padding: 120px 0 100px;
  text-align: center;
}
.not-found-wrap i { font-size: 4rem; color: var(--color-primary); margin-bottom: 20px; display: block; }
.not-found-wrap h2 { font-size: 2rem; margin-bottom: 12px; }
.not-found-wrap p { color: var(--color-text-dim); margin-bottom: 24px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-title { font-size: 1.6rem; }
  .article-title { font-size: 1.7rem; }
  .article-body { padding: 24px; }
  .article-body h2 { font-size: 1.3rem; }
  .nav-main { gap: 4px; }
  .nav-main a { padding: 6px 14px; font-size: 0.82rem; }
  .nav-search input { min-width: 100px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .mobile-toggle { display: block; }
  .nav-main { display: none; }
  .nav-main.open { display: flex; position: absolute; top: var(--header-height); left: 0; right: 0; background: rgba(11,14,23,0.98); backdrop-filter: blur(18px); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--color-border); overflow-x: visible; }
  .nav-main.open a { width: 100%; }
  .nav-search { width: 100%; margin-top: 8px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-title { font-size: 1.4rem; }
  .article-body { padding: 16px; }
  .article-meta-header { gap: 10px; }
  .header-inner { padding: 0 16px; }
  .logo { font-size: 1.1rem; }
  .logo i { font-size: 1.2rem; }
  .btn { padding: 10px 20px; font-size: 0.85rem; }
  .cta-btns { flex-direction: column; align-items: center; }
  .article-footer-meta { flex-direction: column; align-items: flex-start; }
}