/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --color-primary: #C73B1E;
  --color-primary-dark: #A52F16;
  --color-primary-light: #E85D3A;
  --color-secondary: #F5A623;
  --color-secondary-light: #FFD166;
  --color-dark: #1C1C2E;
  --color-dark-soft: #2A2A40;
  --color-bg: #FDF8F4;
  --color-bg-alt: #F5EFEA;
  --color-bg-card: #FFFFFF;
  --color-text: #2C2C2C;
  --color-text-soft: #5A5A5A;
  --color-text-muted: #8A8A8A;
  --color-border: #E8DDD6;
  --color-border-light: #F0E8E2;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--color-dark); }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
p { margin-bottom: 1rem; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ===== 版式装饰 ===== */
.section-deco {
  position: relative;
}
.section-deco::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-primary));
  opacity: 0.15;
}
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(199,59,30,0.08);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: var(--space-md);
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-dark);
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-soft);
  max-width: 640px;
  margin-bottom: var(--space-xl);
}
.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* ===== Header & Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border-light);
  height: var(--header-height);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); background: rgba(255,255,255,0.98); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: 1px;
}
.site-logo .logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  font-weight: 700;
}
.site-logo:hover { color: var(--color-dark); }
.nav-main { display: flex; align-items: center; gap: var(--space-xl); }
.nav-main a {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-soft);
  padding: 6px 0;
  transition: var(--transition);
}
.nav-main a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-main a:hover { color: var(--color-primary); }
.nav-main a:hover::after { width: 100%; }
.nav-main a.active { color: var(--color-primary); font-weight: 600; }
.nav-main a.active::after { width: 100%; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff !important;
  padding: 8px 22px !important;
  border-radius: 30px;
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  box-shadow: 0 4px 14px rgba(199,59,30,0.3);
  transition: var(--transition);
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(199,59,30,0.4); color: #fff !important; }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 6px; cursor: pointer; }
.mobile-toggle span { display: block; width: 26px; height: 2.5px; background: var(--color-dark); border-radius: 2px; transition: var(--transition); }
.mobile-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  margin-top: var(--header-height);
  background: var(--color-dark);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.35;
  mix-blend-mode: overlay;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(28,28,46,0.92) 0%, rgba(28,28,46,0.70) 50%, rgba(199,59,30,0.25) 100%);
}
.hero .container { position: relative; z-index: 2; padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }
.hero-content { max-width: 700px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--color-secondary-light);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(4px);
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #4CAF50; display: inline-block; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.5px;
}
.hero h1 .highlight { background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  max-width: 580px;
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}
.hero-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(199,59,30,0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(199,59,30,0.45); color: #fff; }
.btn-secondary {
  background: rgba(255,255,255,0.10);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.25);
  backdrop-filter: blur(4px);
}
.btn-secondary:hover { background: rgba(255,255,255,0.20); transform: translateY(-3px); color: #fff; }
.hero-stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.10);
}
.hero-stat h3 { font-size: 1.8rem; font-weight: 700; color: var(--color-secondary-light); margin-bottom: 2px; }
.hero-stat p { font-size: 0.9rem; color: rgba(255,255,255,0.5); margin: 0; }

/* ===== 板块通用 ===== */
.section-block { padding: var(--space-4xl) 0; position: relative; }
.section-block.bg-alt { background: var(--color-bg-alt); }
.section-block.bg-dark { background: var(--color-dark); }
.section-block.bg-dark .section-title { color: #fff; }
.section-block.bg-dark .section-subtitle { color: rgba(255,255,255,0.65); }

/* ===== 核心说明 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}
.feature-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(199,59,30,0.08);
  border-radius: var(--radius-sm);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}
.feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: var(--space-sm); }
.feature-card p { font-size: 0.95rem; color: var(--color-text-soft); margin: 0; line-height: 1.7; }

/* ===== 分类入口 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}
.category-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
}
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.category-card .cat-img {
  width: 120px;
  height: 90px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--color-bg-alt);
  flex-shrink: 0;
}
.category-card .cat-info { flex: 1; }
.category-card .cat-info h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.category-card .cat-info p { font-size: 0.9rem; color: var(--color-text-soft); margin: 0; }
.category-card .cat-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(199,59,30,0.08);
  padding: 2px 12px;
  border-radius: 12px;
  margin-top: var(--space-sm);
}

/* ===== 内容/资讯列表 ===== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}
.post-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.post-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.post-card .post-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--color-bg-alt);
}
.post-card .post-body { padding: var(--space-lg); flex: 1; display: flex; flex-direction: column; }
.post-card .post-cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(199,59,30,0.08);
  padding: 2px 12px;
  border-radius: 12px;
  margin-bottom: var(--space-sm);
  align-self: flex-start;
}
.post-card .post-title { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--space-sm); color: var(--color-dark); line-height: 1.4; }
.post-card .post-excerpt { font-size: 0.9rem; color: var(--color-text-soft); margin-bottom: var(--space-md); flex: 1; line-height: 1.6; }
.post-card .post-meta { font-size: 0.8rem; color: var(--color-text-muted); display: flex; justify-content: space-between; align-items: center; }
.post-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-2xl);
  color: var(--color-text-muted);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border);
}

/* ===== 流程/数据 ===== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  counter-reset: step;
}
.process-step {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  position: relative;
  transition: var(--transition);
}
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process-step .step-num {
  counter-increment: step;
  width: 46px;
  height: 46px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: 0 4px 14px rgba(199,59,30,0.25);
}
.process-step h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: var(--space-sm); }
.process-step p { font-size: 0.9rem; color: var(--color-text-soft); margin: 0; line-height: 1.6; }
.process-step .step-arrow {
  position: absolute;
  right: -18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--color-border);
}
.process-step:last-child .step-arrow { display: none; }

/* ===== Data Block ===== */
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
.data-item {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.data-item:hover { background: rgba(255,255,255,0.08); transform: translateY(-3px); }
.data-item .num { font-size: 2.4rem; font-weight: 800; color: var(--color-secondary-light); line-height: 1; margin-bottom: var(--space-sm); }
.data-item .label { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin: 0; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: var(--space-lg) auto 0; }
.faq-item {
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--color-border); }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  background: none;
  text-align: left;
  cursor: pointer;
  gap: var(--space-md);
}
.faq-question .icon { font-size: 1.2rem; color: var(--color-text-muted); transition: var(--transition); flex-shrink: 0; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); color: var(--color-primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, padding 0.3s ease;
  padding: 0 var(--space-lg);
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 var(--space-lg) var(--space-lg);
}
.faq-answer p { font-size: 0.95rem; color: var(--color-text-soft); margin: 0; line-height: 1.7; }

/* ===== CTA ===== */
.cta-block {
  background: linear-gradient(135deg, var(--color-dark), var(--color-dark-soft));
  border-radius: var(--radius-lg);
  padding: var(--space-3xl) var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.06;
}
.cta-block .container { position: relative; z-index: 2; }
.cta-block h2 { font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: var(--space-sm); }
.cta-block p { font-size: 1.05rem; color: rgba(255,255,255,0.65); max-width: 560px; margin: 0 auto var(--space-xl); }
.cta-block .btn { font-size: 1.05rem; padding: 16px 40px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.6);
  padding: var(--space-3xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
.footer-brand .site-logo { color: #fff; margin-bottom: var(--space-md); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-bottom: var(--space-md); max-width: 320px; }
.footer-social { display: flex; gap: var(--space-sm); }
.footer-social a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }
.footer-col h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: var(--space-lg); }
.footer-col ul li { margin-bottom: var(--space-sm); }
.footer-col ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--color-secondary-light); padding-left: 4px; }
.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .post-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2.6rem; }
}
@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .nav-main {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(18px);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
    box-shadow: var(--shadow-lg);
  }
  .nav-main.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-main a { font-size: 1.05rem; padding: 10px 0; width: 100%; }
  .nav-cta { width: 100%; justify-content: center; margin-top: var(--space-sm); }
  .hero { min-height: 80vh; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: var(--space-lg); flex-wrap: wrap; }
  .hero-stat h3 { font-size: 1.4rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card { flex-direction: column; text-align: center; }
  .category-card .cat-img { width: 100%; height: 140px; }
  .post-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .process-step .step-arrow { display: none; }
  .data-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section-block { padding: var(--space-3xl) 0; }
  .section-title { font-size: 1.6rem; }
  .cta-block h2 { font-size: 1.5rem; }
  .cta-block { padding: var(--space-2xl) var(--space-lg); }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.7rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-stats { flex-direction: column; gap: var(--space-md); }
  .container { padding: 0 var(--space-md); }
  .section-block { padding: var(--space-2xl) 0; }
  .feature-card { padding: var(--space-lg); }
  .post-card .post-body { padding: var(--space-md); }
  .faq-question { padding: var(--space-md); font-size: 0.95rem; }
}

/* ===== 工具类 ===== */
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #8B5E3C;
            --color-primary-dark: #6B4226;
            --color-primary-light: #A87B5A;
            --color-secondary: #D4A574;
            --color-secondary-light: #E8C9A8;
            --color-accent: #C93C3C;
            --color-accent-hover: #A83030;
            --color-bg: #F5F0E8;
            --color-bg-alt: #EAE2D8;
            --color-bg-card: #FDFCFA;
            --color-bg-dark: #2C2420;
            --color-bg-dark-alt: #3D342E;
            --color-text: #3D2B1F;
            --color-text-light: #7A6A5D;
            --color-text-muted: #A89888;
            --color-border: #C4A882;
            --color-border-light: #DDD0C0;
            --color-white: #FDFCFA;
            --color-success: #5D8A5C;
            --color-warning: #D4A030;
            --font-body: 'Georgia', 'Times New Roman', '宋体', 'Songti SC', serif;
            --font-heading: 'Georgia', 'Times New Roman', '宋体', 'Songti SC', serif;
            --font-mono: 'Courier New', monospace;
            --radius: 6px;
            --radius-lg: 12px;
            --radius-sm: 4px;
            --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.14);
            --transition: 0.25s ease;
            --spacing-section: 5rem;
            --spacing-block: 3rem;
            --container-max: 1200px;
            --container-narrow: 860px;
            --nav-height: 70px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-body);
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-primary); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: var(--spacing-section) 0; }
        .section-alt { background: var(--color-bg-alt); }
        .section-dark { background: var(--color-bg-dark); color: var(--color-white); }
        .section-dark h2, .section-dark h3, .section-dark h4 { color: var(--color-white); }
        .section-title {
            font-size: 2rem;
            margin-bottom: 0.75rem;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 2.5rem auto;
        }
        .section-dark .section-subtitle { color: var(--color-text-muted); }
        .divider {
            width: 60px;
            height: 3px;
            background: var(--color-secondary);
            margin: 1rem auto 2rem;
            border-radius: 2px;
        }
        .divider-light { background: var(--color-border-light); }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--color-bg-card);
            border-bottom: 2px solid var(--color-border-light);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            height: var(--nav-height);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            font-family: var(--font-heading);
            color: var(--color-primary-dark);
            letter-spacing: 1px;
        }
        .site-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--color-primary-dark);
            color: var(--color-white);
            border-radius: 50%;
            font-size: 1.2rem;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(107,66,38,0.25);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-main a {
            padding: 8px 18px;
            border-radius: var(--radius);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-main a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--color-secondary);
            transition: width var(--transition);
            border-radius: 1px;
        }
        .nav-main a:hover::after,
        .nav-main a.active::after { width: 60%; }
        .nav-main a:hover { background: var(--color-bg-alt); }
        .nav-main a.active { color: var(--color-primary-dark); font-weight: 600; }
        .nav-main a.nav-cta {
            background: var(--color-primary-dark);
            color: var(--color-white);
            border-radius: var(--radius);
            padding: 8px 22px;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(107,66,38,0.2);
        }
        .nav-main a.nav-cta::after { display: none; }
        .nav-main a.nav-cta:hover {
            background: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(107,66,38,0.3);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid var(--color-border);
            border-radius: var(--radius);
            padding: 8px 12px;
            font-size: 1.3rem;
            color: var(--color-text);
            cursor: pointer;
            transition: all var(--transition);
        }
        .nav-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 1.2rem 0 0.8rem;
            font-size: 0.9rem;
            color: var(--color-text-light);
        }
        .breadcrumb a { color: var(--color-text-light); }
        .breadcrumb a:hover { color: var(--color-primary); }
        .breadcrumb span { color: var(--color-text-muted); }
        .breadcrumb .sep { margin: 0 8px; }

        /* ===== Hero Article ===== */
        .article-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: flex-end;
            padding: 3rem 0 2.5rem;
            background: var(--color-bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-bottom: 4px solid var(--color-border);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(44,36,32,0.85) 0%, rgba(44,36,32,0.4) 70%, rgba(44,36,32,0.2) 100%);
            z-index: 1;
        }
        .article-hero .container-narrow { position: relative; z-index: 2; width: 100%; }
        .article-hero .hero-category {
            display: inline-block;
            padding: 4px 16px;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            letter-spacing: 1px;
            margin-bottom: 1rem;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            color: var(--color-white);
            line-height: 1.25;
            margin-bottom: 1rem;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        .article-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: var(--color-secondary-light);
            font-size: 0.9rem;
        }
        .article-hero .hero-meta i { margin-right: 6px; opacity: 0.7; }

        /* ===== Article Content ===== */
        .article-body {
            padding: var(--spacing-block) 0;
        }
        .article-featured-image {
            margin-bottom: 2rem;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 2px solid var(--color-border-light);
        }
        .article-featured-image img {
            width: 100%;
            display: block;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }
        .article-content p {
            margin-bottom: 1.5rem;
        }
        .article-content h2, .article-content h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: var(--color-primary-dark);
        }
        .article-content h2 { font-size: 1.6rem; border-bottom: 2px solid var(--color-border-light); padding-bottom: 0.5rem; }
        .article-content h3 { font-size: 1.3rem; }
        .article-content ul, .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.8rem;
        }
        .article-content ul { list-style: disc; }
        .article-content ol { list-style: decimal; }
        .article-content li { margin-bottom: 0.5rem; }
        .article-content blockquote {
            border-left: 4px solid var(--color-secondary);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: var(--color-bg-alt);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--color-text-light);
        }
        .article-content a { color: var(--color-primary); text-decoration: underline; }
        .article-content a:hover { color: var(--color-accent); }
        .article-content img {
            border-radius: var(--radius);
            margin: 1.5rem auto;
            box-shadow: var(--shadow);
        }
        .article-content .cms-table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .article-content th, .article-content td {
            border: 1px solid var(--color-border-light);
            padding: 0.75rem 1rem;
            text-align: left;
        }
        .article-content th {
            background: var(--color-bg-alt);
            font-weight: 600;
            color: var(--color-primary-dark);
        }
        .article-content td { background: var(--color-bg-card); }

        /* ===== Article Navigation ===== */
        .article-nav {
            padding: 2rem 0;
            border-top: 2px solid var(--color-border-light);
            border-bottom: 2px solid var(--color-border-light);
            margin: 2rem 0;
        }
        .article-nav-grid {
            display: flex;
            justify-content: space-between;
            gap: 2rem;
        }
        .article-nav-item {
            flex: 1;
            padding: 1rem 1.2rem;
            background: var(--color-bg-alt);
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .article-nav-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .article-nav-item .nav-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 0.3rem;
        }
        .article-nav-item .nav-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary-dark);
        }
        .article-nav-item.next { text-align: right; }
        .article-nav-item .nav-empty {
            color: var(--color-text-muted);
            font-style: italic;
        }

        /* ===== Related Cards ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-border);
        }
        .related-card .card-img {
            height: 180px;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body {
            padding: 1.2rem 1.2rem 1.5rem;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
            color: var(--color-primary-dark);
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 0.8rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* ===== CTA ===== */
        .cta-block {
            text-align: center;
            padding: 3.5rem 2rem;
            background: var(--color-bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            border-radius: var(--radius-lg);
            border: 2px solid var(--color-border);
            position: relative;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(44,36,32,0.7);
            border-radius: var(--radius-lg);
            z-index: 1;
        }
        .cta-block > * { position: relative; z-index: 2; }
        .cta-block h3 {
            font-size: 1.8rem;
            color: var(--color-white);
            margin-bottom: 0.75rem;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: var(--color-secondary-light);
            margin-bottom: 1.8rem;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .btn {
            display: inline-block;
            padding: 12px 36px;
            background: var(--color-accent);
            color: var(--color-white);
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1.05rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.5px;
        }
        .cta-block .btn:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201,60,60,0.35);
        }
        .cta-block .btn-secondary {
            background: transparent;
            border-color: var(--color-white);
            margin-left: 12px;
        }
        .cta-block .btn-secondary:hover {
            background: var(--color-white);
            color: var(--color-bg-dark);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 4rem 2rem;
            background: var(--color-bg-card);
            border: 2px dashed var(--color-border-light);
            border-radius: var(--radius-lg);
            margin: 2rem 0;
        }
        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--color-border);
            margin-bottom: 1rem;
        }
        .not-found-box h2 {
            font-size: 1.6rem;
            color: var(--color-text-light);
            margin-bottom: 1rem;
        }
        .not-found-box p {
            color: var(--color-text-muted);
            margin-bottom: 1.5rem;
        }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 10px 28px;
            background: var(--color-primary-dark);
            color: var(--color-white);
            border-radius: var(--radius);
            font-weight: 500;
            transition: all var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--color-primary);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-muted);
            padding: 4rem 0 0;
            border-top: 4px solid var(--color-border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .site-logo {
            color: var(--color-white);
            margin-bottom: 1rem;
        }
        .footer-brand .site-logo .logo-icon {
            background: var(--color-accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            margin-bottom: 1.2rem;
            color: var(--color-text-muted);
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--color-accent);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: var(--color-white);
            font-size: 1rem;
            margin-bottom: 1.2rem;
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 0.7rem;
        }
        .footer-col ul li a {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--color-secondary); }
        .footer-col ul li span {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            gap: 1rem;
        }

        /* ===== Buttons & Tags ===== */
        .tag {
            display: inline-block;
            padding: 3px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border-light);
            color: var(--color-text-light);
            transition: all var(--transition);
        }
        .tag:hover {
            border-color: var(--color-border);
            background: var(--color-bg-card);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
                --spacing-block: 2rem;
            }
            .section-title { font-size: 1.6rem; }
            .article-hero { min-height: 280px; padding: 2rem 0 1.5rem; }
            .article-hero h1 { font-size: 1.7rem; }
            .article-nav-grid { flex-direction: column; gap: 1rem; }
            .article-nav-item.next { text-align: left; }
            .related-grid { grid-template-columns: 1fr; gap: 16px; }
            .cta-block { padding: 2.5rem 1.5rem; }
            .cta-block h3 { font-size: 1.4rem; }
            .cta-block .btn-secondary { margin-left: 0; margin-top: 10px; display: block; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .nav-main { display: none; }
            .nav-main.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg-card);
                border-bottom: 2px solid var(--color-border-light);
                padding: 1rem 24px;
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-main.open a { padding: 10px 16px; width: 100%; }
            .nav-main.open a.nav-cta { text-align: center; }
            .nav-toggle { display: block; }
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
            .article-content { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.4rem; }
            .article-hero .hero-meta { gap: 0.8rem; font-size: 0.8rem; }
            .section-title { font-size: 1.3rem; }
            .cta-block h3 { font-size: 1.2rem; }
            .site-logo { font-size: 1.2rem; }
            .site-logo .logo-icon { width: 34px; height: 34px; font-size: 1rem; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #D43D30;
            --primary-dark: #B23020;
            --primary-light: #FDF0EE;
            --primary-gradient: linear-gradient(135deg, #D43D30 0%, #E85D4A 100%);
            --secondary: #F5A623;
            --secondary-light: #FEF3E0;
            --accent: #E8B84B;
            --bg: #FAF7F5;
            --bg-alt: #F3EEE9;
            --bg-card: #FFFFFF;
            --bg-dark: #2D2A28;
            --bg-dark-alt: #3D3835;
            --text: #1E1B18;
            --text-weak: #7A736E;
            --text-muted: #A59E98;
            --text-white: #FFFFFF;
            --border: #E5DDD7;
            --border-light: #F0EBE5;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 48px rgba(0,0,0,0.10);
            --shadow-btn: 0 4px 14px rgba(212,61,48,0.30);
            --transition: 0.30s cubic-bezier(0.22, 1, 0.36, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.35rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
        }
        p:last-child {
            margin-bottom: 0;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 32px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Logo */
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-gradient);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: 0;
            box-shadow: 0 4px 12px rgba(212, 61, 48, 0.25);
        }
        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.02em;
        }
        .logo-text span {
            color: var(--primary);
        }

        /* Nav */
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-weak);
            transition: background var(--transition), color var(--transition);
        }
        .nav-main a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-main a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-cta {
            background: var(--primary-gradient) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: var(--shadow-btn);
            transition: transform var(--transition), box-shadow var(--transition) !important;
            margin-left: 8px;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 61, 48, 0.35) !important;
            background: var(--primary-gradient) !important;
            color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary-light);
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        .menu-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 820px) {
            .menu-toggle {
                display: flex;
            }
            .nav-main {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
                pointer-events: none;
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-main a {
                padding: 12px 16px;
                width: 100%;
                text-align: center;
                font-size: 1.05rem;
            }
            .nav-main a.active::after {
                bottom: 4px;
                width: 30px;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            margin-top: var(--header-h);
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #2D2A28 0%, #4A3F3A 100%);
            position: relative;
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            pointer-events: none;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(45,42,40,0.70) 0%, rgba(45,42,40,0.30) 100%);
            pointer-events: none;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .banner-content h1 {
            color: var(--text-white);
            margin-bottom: 16px;
            font-weight: 800;
        }
        .banner-content h1 .highlight {
            color: var(--secondary);
        }
        .banner-content p {
            color: rgba(255, 255, 255, 0.80);
            font-size: 1.15rem;
            max-width: 580px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .banner-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .banner-actions .btn-primary {
            padding: 14px 36px;
            font-size: 1.05rem;
        }
        .banner-actions .btn-outline-light {
            padding: 14px 36px;
            font-size: 1.05rem;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 70px 0 54px;
                min-height: 300px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .banner-content p {
                font-size: 1rem;
            }
            .banner-actions .btn-primary,
            .banner-actions .btn-outline-light {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 28px;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
            text-decoration: none;
            line-height: 1.3;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 61, 48, 0.35);
            color: #fff;
        }
        .btn-secondary {
            background: var(--secondary);
            color: #1E1B18;
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.30);
        }
        .btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.35);
            color: #1E1B18;
        }
        .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.50);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-primary {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.9rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }

        /* ===== Section Shared ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .section-sub {
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            color: var(--text-weak);
            font-size: 1.1rem;
            line-height: 1.7;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.70);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-dark .section-label {
            background: rgba(255, 255, 255, 0.10);
            color: var(--secondary);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 54px 0;
            }
            .section-sub {
                font-size: 1rem;
                margin-bottom: 32px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            padding: 28px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            overflow: hidden;
            margin: -28px -24px 20px;
            aspect-ratio: 16 / 9;
            background: var(--bg-alt);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.03);
        }
        .card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .card p {
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.6;
        }
        .card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 820px) {
            .grid-3 {
                grid-template-columns: 1fr 1fr;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 560px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Login Methods Section ===== */
        .method-card {
            text-align: center;
            padding: 36px 28px 32px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .method-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 1.8rem;
            color: #fff;
            background: var(--primary-gradient);
            box-shadow: 0 8px 24px rgba(212, 61, 48, 0.20);
        }
        .method-icon.gold {
            background: linear-gradient(135deg, #F5A623, #E8B84B);
            box-shadow: 0 8px 24px rgba(245, 166, 35, 0.25);
        }
        .method-icon.teal {
            background: linear-gradient(135deg, #2C9E8F, #3DBEB0);
            box-shadow: 0 8px 24px rgba(44, 158, 143, 0.20);
        }
        .method-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .method-card p {
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .method-card .btn {
            margin-top: 4px;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            counter-increment: step;
            text-align: center;
            padding: 32px 20px 28px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 1.2rem;
            transition: background var(--transition), color var(--transition);
        }
        .step-item:hover .step-num {
            background: var(--primary);
            color: #fff;
        }
        .step-item h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .step-item p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 1024px) {
            .step-item {
                position: relative;
            }
            .step-item:not(:last-child)::after {
                content: '→';
                position: absolute;
                right: -16px;
                top: 50%;
                transform: translateY(-50%);
                font-size: 1.6rem;
                color: var(--text-muted);
                font-weight: 300;
                opacity: 0.5;
            }
        }
        @media (max-width: 820px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Security Features ===== */
        .security-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .security-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 20px 22px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .security-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .security-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.2rem;
        }
        .security-item h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .security-item p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .security-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: background var(--transition), color var(--transition);
            font-family: var(--font);
            line-height: 1.4;
        }
        .faq-question:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition), color var(--transition);
        }
        .faq-item.open .faq-question .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item.open .faq-question {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1), padding 0.3s ease;
            padding: 0 22px;
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 0px solid var(--border-light);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 18px 22px 22px;
            border-top-width: 1px;
        }

        /* ===== Stats / Trust ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: transform var(--transition), background var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.10);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 4px;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.70);
            font-weight: 500;
        }
        @media (max-width: 820px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--primary-gradient);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-inner .btn {
            font-size: 1.1rem;
            padding: 16px 44px;
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
        }
        .cta-inner .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.20);
            background: #fff;
            color: var(--primary-dark);
        }

        /* ===== Related Articles ===== */
        .article-card {
            display: flex;
            flex-direction: column;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .article-card .card-img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-alt);
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }
        .article-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-body .card-tag {
            align-self: flex-start;
        }
        .article-card .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .article-card .card-body p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
        }
        .article-card .card-body .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .site-logo {
            margin-bottom: 14px;
        }
        .footer-brand .site-logo .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 1rem;
        }
        .footer-brand .site-logo .logo-text {
            color: #fff;
            font-size: 1.15rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
            max-width: 340px;
            margin-bottom: 18px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.60);
            font-size: 1rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.40);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Additional Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Smooth hover for all interactive ===== */
        @media (hover: hover) {
            .card,
            .method-card,
            .step-item,
            .security-item,
            .stat-item,
            .article-card {
                transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
            }
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-alt);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }