/* roulang page: index */
/* ===== Design Tokens ===== */
:root {
  --primary: #00e0ff;
  --primary-rgb: 0, 224, 255;
  --primary-dark: #00a8cc;
  --accent: #ff2d78;
  --accent-rgb: 255, 45, 120;
  --bg-deep: #070b12;
  --bg-body: #0b101a;
  --bg-card: #101826;
  --bg-soft: #0d1421;
  --text-main: #e6edf5;
  --text-muted: #8b98a9;
  --border: #1c2838;
  --border-light: #293a52;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-card: 0 14px 34px rgba(0, 0, 0, 0.45);
  --shadow-neon: 0 0 26px rgba(var(--primary-rgb), 0.18);
  --shadow-glow: 0 0 44px rgba(var(--primary-rgb), 0.32);
  --section-space: 88px;
  --header-h: 78px;
  --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 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: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
.container { width: min(1200px, 92%); margin: 0 auto; }
::selection { background: rgba(var(--primary-rgb), 0.3); color: var(--text-main); }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #05121f;
  box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(var(--primary-rgb), 0.4);
  color: #02131f;
}
.btn-outline {
  border-color: var(--border-light);
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.02);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-neon);
  transform: translateY(-2px);
}
.btn-lg { padding: 17px 42px; font-size: 17px; }

/* ===== Section Header ===== */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--section-space);
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.1);
  border: 1px solid rgba(var(--primary-rgb), 0.25);
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.section-title .highlight {
  background: linear-gradient(135deg, var(--primary), #7c4dff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-sub {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}
.section { padding: var(--section-space) 0; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(8, 12, 20, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.site-header.scrolled {
  background: rgba(6, 9, 16, 0.96);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  line-height: 1.1;
}
.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.25), rgba(var(--accent-rgb), 0.2));
  border: 1px solid rgba(var(--primary-rgb), 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  box-shadow: var(--shadow-neon);
  flex-shrink: 0;
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.brand-text span { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  letter-spacing: 0.02em;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transform: scaleX(0.4);
  transition: all 0.35s ease;
}
.nav-link:hover { color: var(--text-main); }
.nav-link:hover::after { opacity: 0.4; transform: scaleX(0.7); }
.nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 18px rgba(var(--primary-rgb), 0.35);
}
.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
  box-shadow: 0 0 14px rgba(var(--primary-rgb), 0.5);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.header-cta {
  padding: 12px 26px;
  font-size: 14px;
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
  font-size: 20px;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-deep);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(7, 11, 20, 0.65) 0%,
      rgba(7, 11, 20, 0.78) 35%,
      var(--bg-body) 100%);
}
.hero-glow {
  position: absolute;
  z-index: 1;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
}
.hero-glow-1 {
  width: 480px;
  height: 480px;
  background: rgba(var(--primary-rgb), 0.5);
  top: 10%;
  left: -80px;
}
.hero-glow-2 {
  width: 380px;
  height: 380px;
  background: rgba(var(--accent-rgb), 0.35);
  right: 5%;
  bottom: 12%;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 130px 0 90px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(var(--primary-rgb), 0.1);
  border: 1px solid rgba(var(--primary-rgb), 0.3);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 24px;
}
.hero-badge i {
  font-size: 12px;
  animation: pulse-dot 1.5s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}
.hero-title {
  font-size: clamp(38px, 6.5vw, 72px);
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 22px;
  letter-spacing: 0.01em;
}
.hero-title .gradient-text {
  background: linear-gradient(120deg, var(--primary) 0%, #7c4dff 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.hero-meta i { color: var(--primary); }
.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-stat-item .num {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.hero-stat-item .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ===== Feature Cards ===== */
.feature-section {
  background: var(--bg-body);
  position: relative;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--primary-rgb), 0.3);
  box-shadow: var(--shadow-card);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: rgba(var(--primary-rgb), 0.1);
  color: var(--primary);
  margin-bottom: 20px;
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  transition: all var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--primary);
  color: #05121f;
  box-shadow: var(--shadow-glow);
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Category Cards ===== */
.category-section {
  background: var(--bg-soft);
  position: relative;
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card);
  border-color: rgba(var(--primary-rgb), 0.35);
}
.category-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.category-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.category-card:hover .category-card-img img { transform: scale(1.06); }
.category-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(7, 11, 20, 0.85) 100%);
}
.category-card-body {
  padding: 0 28px 30px;
  margin-top: -40px;
  position: relative;
  z-index: 2;
}
.category-card-body .cat-label {
  display: inline-block;
  padding: 5px 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #05121f;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 14px;
}
.category-card-body h3 {
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--text-main);
}
.category-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.category-card-link i { transition: transform var(--transition); }
.category-card-link:hover i { transform: translateX(5px); }

/* ===== News List ===== */
.news-section { background: var(--bg-body); }
.news-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
}
.news-list { display: flex; flex-direction: column; gap: 4px; }
.news-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition);
}
.news-item:last-child { border-bottom: none; }
.news-item:hover .news-title { color: var(--primary); }
.news-date {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.news-cat {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(var(--primary-rgb), 0.08);
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  color: var(--primary);
  margin-bottom: 8px;
}
.news-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  transition: color var(--transition);
  margin-bottom: 4px;
  max-width: 88%;
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px dashed var(--border-light);
}
.news-sidebar { display: flex; flex-direction: column; gap: 24px; }
.side-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.side-card h3 {
  font-size: 16px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.side-card h3::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 42px;
  height: 2px;
  background: var(--primary);
}
.side-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.side-tag {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.side-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(var(--primary-rgb), 0.08);
}
.side-links li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.side-links li:last-child { border-bottom: none; }
.side-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  transition: all var(--transition);
}
.side-links a:hover { color: var(--primary); padding-left: 6px; }
.side-links a i { font-size: 12px; color: var(--primary); }

/* ===== Stats ===== */
.stats-section {
  padding: var(--section-space) 0;
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(var(--primary-rgb), 0.12);
  filter: blur(90px);
  top: -200px;
  right: -100px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
}
.stat-item {
  text-align: center;
  padding: 40px 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.stat-item:hover {
  border-color: rgba(var(--primary-rgb), 0.3);
  background: rgba(var(--primary-rgb), 0.04);
}
.stat-num {
  font-size: 44px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ===== Split Feature ===== */
.split-section { background: var(--bg-body); }
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.split-media img { width: 100%; height: 400px; object-fit: cover; }
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(7, 11, 20, 0.5));
}
.split-content h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  margin-bottom: 16px;
}
.split-content h2 .highlight {
  color: var(--primary);
}
.split-content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 24px;
}
.split-points { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.split-points li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-main);
}
.split-points li i {
  color: var(--primary);
  font-size: 16px;
  margin-top: 4px;
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-section { background: var(--bg-soft); }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: rgba(var(--primary-rgb), 0.25); }
.faq-item.open { border-color: rgba(var(--primary-rgb), 0.4); box-shadow: var(--shadow-neon); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question i {
  font-size: 14px;
  color: var(--primary);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
}
.faq-item.open .faq-answer {
  padding: 0 24px 22px;
  max-height: 400px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 110px 0;
  background: var(--bg-deep);
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
}
.cta-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 11, 20, 0.92) 20%, rgba(7, 11, 20, 0.75) 100%);
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.cta-content h2 {
  font-size: clamp(30px, 4.5vw, 46px);
  margin-bottom: 18px;
}
.cta-content h2 .highlight {
  color: var(--primary);
}
.cta-content p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.75;
}
.cta-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 16px;
  margin-bottom: 18px;
  color: var(--text-main);
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--primary);
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--text-muted);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-col ul a i { font-size: 11px; color: var(--primary); }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary); }
.footer-cert {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-cert i { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root { --section-space: 70px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .split-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --section-space: 56px; --header-h: 68px; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(8, 12, 20, 0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 6%;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-110%);
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }
  .main-nav.open { transform: translateY(0); }
  .nav-link { padding: 16px; font-size: 16px; border-radius: var(--radius-sm); text-align: center; }
  .nav-link::after { display: none; }
  .nav-link.active { background: rgba(var(--primary-rgb), 0.08); }
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .hero { min-height: auto; }
  .hero-content { padding: 110px 0 70px; }
  .hero-stats { gap: 24px; }
  .hero-stat-item .num { font-size: 24px; }
  .split-media img { height: 280px; }
  .feature-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .news-item { grid-template-columns: 1fr; gap: 10px; padding: 20px 0; }
  .section-title { font-size: 30px; }
}

@media (max-width: 520px) {
  :root { --section-space: 48px; }
  .container { width: 90%; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 32px; }
  .btn-lg { padding: 15px 30px; font-size: 15px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeInUp 0.6s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ===== Focus states ===== */
a:focus-visible, button:focus-visible, .faq-question:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

.fade-up { opacity: 0; }
.fade-up.visible { animation: fadeInUp 0.7s ease forwards; }
.fade-up.delay-1 { animation-delay: 0.1s; }
.fade-up.delay-2 { animation-delay: 0.2s; }
.fade-up.delay-3 { animation-delay: 0.3s; }
.fade-up.delay-4 { animation-delay: 0.4s; }

/* roulang page: category1 */
:root {
  --primary: #6df3c4;
  --primary-dark: #17c99a;
  --secondary: #8b5cf6;
  --accent: #f472b6;
  --bg-dark: #0b0e14;
  --bg-deep: #070a10;
  --bg-card: #121824;
  --bg-card-hover: #1a2230;
  --text-light: #f1f5f9;
  --text-mid: #a4b2c4;
  --text-weak: #64748b;
  --border: rgba(109, 243, 196, 0.15);
  --border-strong: rgba(109, 243, 196, 0.35);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 24px rgba(109, 243, 196, 0.25);
  --spacing-section: 100px;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-display: "PingFang SC", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-main); background: var(--bg-dark); color: var(--text-light); line-height: 1.7; overflow-x: hidden; }
img { max-width: 100%; display: block; border-radius: var(--radius-md); }
a { color: var(--text-light); text-decoration: none; transition: all 0.3s ease; }
ul, ol { list-style: none; }
button { background: none; border: none; cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 头部导航 */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(11, 14, 20, 0.88); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-icon { width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--bg-deep); box-shadow: 0 0 18px rgba(109, 243, 196, 0.35); }
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: 1px; color: var(--text-light); white-space: nowrap; }
.brand-text span { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link { position: relative; padding: 8px 16px; border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--text-mid); transition: all 0.3s ease; }
.nav-link:hover { color: var(--text-light); background: rgba(109, 243, 196, 0.08); }
.nav-link.active { color: var(--primary); background: rgba(109, 243, 196, 0.1); text-shadow: 0 0 12px rgba(109, 243, 196, 0.5); }
.nav-link.active::after { content: ""; position: absolute; bottom: 0; left: 16px; right: 16px; height: 2px; background: var(--primary); border-radius: 2px; box-shadow: 0 0 8px var(--primary); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px; border-radius: 50px; font-weight: 600; font-size: 14px; transition: all 0.3s ease; outline: none; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--bg-deep); box-shadow: 0 4px 16px rgba(109, 243, 196, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(109, 243, 196, 0.45); color: var(--bg-deep); }
.btn-outline { border: 2px solid var(--border-strong); color: var(--primary); background: transparent; }
.btn-outline:hover { background: rgba(109, 243, 196, 0.08); border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; align-items: center; justify-content: center; font-size: 20px; color: var(--text-light); border: 1px solid var(--border); }

/* hero */
.page-hero { position: relative; padding: 90px 0; background-image: linear-gradient(rgba(7, 10, 16, 0.85), rgba(7, 10, 16, 0.9)), url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; border-bottom: 1px solid var(--border); }
.page-hero .hero-inner { max-width: 860px; }
.page-hero .eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(109, 243, 196, 0.12); border: 1px solid var(--border); border-radius: 50px; padding: 6px 18px; font-size: 14px; color: var(--primary); font-weight: 500; margin-bottom: 24px; }
.page-hero h1 { font-size: clamp(30px, 5vw, 48px); font-weight: 800; line-height: 1.25; margin-bottom: 18px; letter-spacing: 1px; }
.page-hero h1 span { color: var(--primary); }
.page-hero p.lead { font-size: 16px; color: var(--text-mid); max-width: 680px; line-height: 1.8; }

/* 板块通用 */
.section { padding: var(--spacing-section) 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .tag { display: inline-block; background: rgba(109, 243, 196, 0.1); border: 1px solid var(--border); color: var(--primary); font-size: 13px; font-weight: 600; padding: 5px 16px; border-radius: 50px; margin-bottom: 16px; }
.section-head h2 { font-size: clamp(26px, 3.5vw, 36px); font-weight: 700; margin-bottom: 14px; letter-spacing: 1px; }
.section-head p { color: var(--text-mid); font-size: 16px; line-height: 1.7; }

/* 服务卡片 */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; transition: all 0.35s ease; position: relative; overflow: hidden; }
.service-card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--primary), var(--secondary)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s ease; }
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--border-strong); }
.service-card:hover::before { transform: scaleX(1); }
.service-card .icon-box { width: 56px; height: 56px; border-radius: 16px; background: linear-gradient(135deg, rgba(109, 243, 196, 0.15), rgba(139, 92, 246, 0.15)); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--primary); margin-bottom: 22px; }
.service-card h3 { font-size: 20px; margin-bottom: 12px; font-weight: 600; }
.service-card p { color: var(--text-mid); font-size: 14px; line-height: 1.75; }

/* 图文板块 */
.split-section { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-section .visual { position: relative; }
.split-section .visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.split-section .visual .float-tag { position: absolute; bottom: 20px; left: 20px; background: rgba(11, 14, 20, 0.85); border: 1px solid var(--border-strong); border-radius: 16px; padding: 14px 22px; backdrop-filter: blur(8px); display: flex; align-items: center; gap: 12px; }
.split-section .visual .float-tag i { color: var(--primary); font-size: 20px; }
.split-section .visual .float-tag span { font-size: 14px; color: var(--text-light); font-weight: 600; }
.split-section h2 { font-size: 30px; font-weight: 700; margin-bottom: 18px; line-height: 1.4; }
.split-section h2 span { color: var(--primary); }
.split-section p { color: var(--text-mid); font-size: 15px; line-height: 1.8; margin-bottom: 16px; }
.feature-list { margin-top: 24px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; color: var(--text-mid); font-size: 15px; }
.feature-list li i { color: var(--primary); margin-top: 5px; font-size: 14px; }

/* 流程步骤 */
.steps-section { background: var(--bg-deep); border-radius: var(--radius-xl); padding: 56px 48px; border: 1px solid var(--border); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.step-item { text-align: center; position: relative; padding: 0 12px; }
.step-item .step-num { width: 46px; height: 46px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--bg-deep); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; margin: 0 auto 16px; box-shadow: 0 0 20px rgba(109, 243, 196, 0.3); }
.step-item h4 { font-size: 17px; margin-bottom: 8px; font-weight: 600; }
.step-item p { font-size: 13px; color: var(--text-mid); line-height: 1.65; }
.step-item::after { content: "\f178"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; right: -22px; top: 12px; color: var(--primary); font-size: 16px; opacity: 0.5; }
.step-item:last-child::after { display: none; }

/* 内容列表 */
.content-feed { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feed-card { display: flex; gap: 18px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px; transition: all 0.3s ease; align-items: flex-start; }
.feed-card:hover { border-color: var(--border-strong); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feed-card img { width: 160px; height: 96px; object-fit: cover; border-radius: 10px; flex-shrink: 0; }
.feed-card .feed-body { padding-top: 2px; }
.feed-card .feed-meta { display: flex; gap: 12px; font-size: 12px; color: var(--text-weak); margin-bottom: 6px; }
.feed-card .feed-meta i { color: var(--primary); margin-right: 4px; }
.feed-card h3 { font-size: 16px; font-weight: 600; line-height: 1.5; margin-bottom: 6px; }
.feed-card h3 a:hover { color: var(--primary); }
.feed-card p { font-size: 13px; color: var(--text-mid); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 16px; overflow: hidden; transition: all 0.3s ease; }
.faq-item:hover { border-color: var(--border-strong); }
.faq-item[open] { box-shadow: var(--shadow-md); }
.faq-item summary { display: flex; align-items: center; gap: 14px; padding: 22px 26px; cursor: pointer; font-size: 16px; font-weight: 600; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon { width: 28px; height: 28px; border-radius: 50%; background: rgba(109, 243, 196, 0.12); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 13px; flex-shrink: 0; transition: all 0.3s ease; }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
.faq-item .faq-answer { padding: 0 26px 24px 26px; color: var(--text-mid); font-size: 14px; line-height: 1.8; }

/* CTA */
.cta-section { background: linear-gradient(135deg, rgba(109, 243, 196, 0.06), rgba(139, 92, 246, 0.06)); border: 1px solid var(--border-strong); border-radius: var(--radius-xl); padding: 72px 56px; text-align: center; position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; top: -40px; right: -40px; width: 200px; height: 200px; border-radius: 50%; background: rgba(109, 243, 196, 0.08); filter: blur(32px); }
.cta-section::after { content: ""; position: absolute; bottom: -40px; left: -40px; width: 200px; height: 200px; border-radius: 50%; background: rgba(139, 92, 246, 0.08); filter: blur(32px); }
.cta-section h2 { font-size: clamp(28px, 4vw, 38px); font-weight: 800; margin-bottom: 14px; position: relative; z-index: 1; }
.cta-section p { color: var(--text-mid); font-size: 16px; margin-bottom: 28px; position: relative; z-index: 1; }
.cta-section .btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }

/* 页脚 */
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--border); padding-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { color: var(--text-mid); font-size: 14px; line-height: 1.8; margin-top: 12px; }
.footer-col h4 { color: var(--text-light); font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-mid); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul li a:hover { color: var(--primary); }
.footer-col ul li a i { font-size: 10px; }
.footer-bottom { border-top: 1px solid var(--border); padding: 18px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { color: var(--text-weak); font-size: 13px; }
.footer-cert { display: flex; gap: 20px; }
.footer-cert span { color: var(--text-weak); font-size: 13px; display: inline-flex; align-items: center; gap: 6px; }
.footer-cert span i { color: var(--primary); }

/* 移动端 */
@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 20px; }
  .step-item::after { display: none; }
}
@media (max-width: 768px) {
  :root { --spacing-section: 70px; }
  .main-nav { position: fixed; top: 72px; left: 0; width: 100%; background: var(--bg-card); flex-direction: column; padding: 20px; gap: 12px; transform: translateY(-150%); opacity: 0; pointer-events: none; transition: all 0.4s ease; border-bottom: 1px solid var(--border); z-index: 999; box-shadow: var(--shadow-lg); }
  .main-nav.show { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { width: 100%; text-align: center; padding: 12px; font-size: 16px; }
  .nav-toggle { display: flex; }
  .split-section { grid-template-columns: 1fr; gap: 40px; }
  .content-feed { grid-template-columns: 1fr; }
  .feed-card img { width: 130px; height: 82px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-section { padding: 48px 24px; }
  .page-hero { padding: 60px 0; }
}
@media (max-width: 520px) {
  .header-inner { gap: 8px; }
  .brand-text { font-size: 17px; }
  .brand-icon { width: 36px; height: 36px; font-size: 16px; }
  .header-cta { display: none; }
  .service-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .feed-card { flex-direction: column; }
  .feed-card img { width: 100%; height: 160px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-cert { flex-wrap: wrap; justify-content: center; }
  .cta-section h2 { font-size: 24px; }
  .steps-section { padding: 36px 20px; }
}

/* roulang page: category2 */
:root {
  --bg-deep: #070b14;
  --bg-body: #0b1120;
  --bg-card: rgba(17, 25, 40, 0.86);
  --bg-card-hover: rgba(24, 34, 54, 0.96);
  --bg-nav: rgba(7, 11, 20, 0.92);
  --primary: #22d3ee;
  --secondary: #a78bfa;
  --accent: #fb7185;
  --gold: #fbbf24;
  --text-main: #e5eaf3;
  --text-weak: #94a3b8;
  --text-faint: #64748b;
  --border: rgba(148, 163, 184, 0.16);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 4px 18px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 14px 36px rgba(0, 0, 0, 0.42);
  --glow-cyan: 0 0 26px rgba(34, 211, 238, 0.22);
  --glow-purple: 0 0 26px rgba(167, 139, 250, 0.2);
  --transition: all 0.28s ease;
  --grad-main: linear-gradient(135deg, #0891b2, #6d28d9, #7c3aed);
  --grad-text: linear-gradient(92deg, #22d3ee, #a78bfa);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

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

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

ul,
ol {
  list-style: none;
}

i {
  font-style: normal;
}

::selection {
  background: rgba(34, 211, 238, 0.3);
  color: #fff;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ============ Header / Nav ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(167, 139, 250, 0.18));
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-radius: 12px;
  color: var(--primary);
  font-size: 20px;
  box-shadow: var(--glow-cyan);
  transition: var(--transition);
}

.brand:hover .brand-icon {
  transform: rotate(-8deg) scale(1.05);
  border-color: var(--primary);
}

.brand-text {
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  white-space: nowrap;
}

.brand-text span {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  position: relative;
  padding: 9px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-weak);
  border-radius: 10px;
  transition: var(--transition);
  letter-spacing: 0.2px;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 3px;
  height: 2px;
  background: var(--grad-text);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.32s ease;
  box-shadow: var(--glow-cyan);
}

.nav-link:hover {
  color: var(--text-main);
  background: rgba(34, 211, 238, 0.08);
}

.nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 16px rgba(34, 211, 238, 0.45);
}

.nav-link.active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-cta {
  padding: 10px 22px;
  font-size: 14px;
  border-radius: 999px;
}

.nav-toggle {
  display: none;
  font-size: 22px;
  color: var(--text-main);
  padding: 8px 10px;
  border-radius: 10px;
  transition: var(--transition);
}

.nav-toggle:hover {
  color: var(--primary);
  background: rgba(34, 211, 238, 0.1);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  line-height: 1.2;
  transition: var(--transition);
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-main);
  background-size: 150% 150%;
  color: #fff;
  box-shadow: 0 6px 24px rgba(34, 211, 238, 0.22), 0 4px 18px rgba(124, 58, 237, 0.22);
}

.btn-primary:hover {
  background-position: 100% 50%;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(34, 211, 238, 0.4);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
}

.btn-outline {
  border-color: rgba(34, 211, 238, 0.45);
  color: var(--primary);
  background: rgba(34, 211, 238, 0.06);
}

.btn-outline:hover {
  background: rgba(34, 211, 238, 0.14);
  border-color: var(--primary);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 38px;
  font-size: 16px;
}

.btn-gold {
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #0b1120;
  box-shadow: 0 6px 24px rgba(251, 191, 36, 0.25);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(251, 191, 36, 0.4);
  color: #0b1120;
}

/* ============ Page Hero ============ */
.page-hero {
  position: relative;
  padding: 104px 0 96px;
  background:
    linear-gradient(180deg, rgba(7, 11, 20, 0.87) 0%, rgba(7, 11, 20, 0.78) 52%, rgba(11, 17, 32, 0.98) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid rgba(34, 211, 238, 0.14);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -90px;
  right: -110px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 65%);
  pointer-events: none;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: -110px;
  left: -90px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.15), transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 840px;
}

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 22px;
}

.hero-breadcrumb a {
  color: var(--text-weak);
  transition: var(--transition);
}

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

.hero-breadcrumb i {
  font-size: 11px;
  color: var(--text-faint);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.6px;
  box-shadow: inset 0 0 18px rgba(34, 211, 238, 0.08), var(--glow-cyan);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(34px, 5.2vw, 56px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: 0.5px;
  color: #fff;
  margin-bottom: 20px;
}

.hero-title .grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-weak);
  max-width: 720px;
  margin-bottom: 36px;
  line-height: 1.9;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 54px;
  padding-top: 34px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
}

.hero-stat {
  position: relative;
  padding: 6px 4px;
}

.hero-stat-number {
  font-size: 32px;
  font-weight: 900;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  letter-spacing: 0.5px;
}

.hero-stat-label {
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 6px;
}

/* ============ Section base ============ */
.section {
  padding: 92px 0;
}

.section-deep {
  background: #0d1425;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.section-head {
  max-width: 700px;
  margin-bottom: 52px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.28);
  margin-bottom: 18px;
}

.section-title {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}

.section-title .grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.85;
}

/* ============ Featured Tournament Cards ============ */
.tour-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.tour-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.tour-card:hover {
  transform: translateY(-7px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: var(--shadow-md), var(--glow-cyan);
  background: var(--bg-card-hover);
}

.tour-media {
  position: relative;
  height: 230px;
  overflow: hidden;
}

.tour-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.tour-card:hover .tour-media img {
  transform: scale(1.06);
}

.tour-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(7, 11, 20, 0.88) 100%);
  pointer-events: none;
}

.tour-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #0b1120;
  background: linear-gradient(135deg, var(--primary), #67e8f9);
  box-shadow: 0 4px 14px rgba(34, 211, 238, 0.35);
}

.tour-tag.t-purple {
  background: linear-gradient(135deg, var(--secondary), #c4b5fd);
  color: #0b1120;
}

.tour-tag.t-gold {
  background: linear-gradient(135deg, #fbbf24, #fb923c);
  color: #0b1120;
}

.tour-tag.t-pink {
  background: linear-gradient(135deg, var(--accent), #fda4af);
  color: #0b1120;
}

.tour-body {
  padding: 24px 26px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.tour-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}

.tour-desc {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  margin-bottom: 18px;
  flex: 1;
}

.tour-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--text-faint);
}

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

.tour-meta i {
  color: var(--primary);
  font-size: 14px;
}

.tour-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}

.tour-link i {
  transition: transform 0.26s ease;
}

.tour-link:hover {
  color: var(--secondary);
}

.tour-link:hover i {
  transform: translateX(5px);
}

/* ============ Category Cards ============ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.cat-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px 32px;
  text-align: center;
  transition: var(--transition);
  overflow: hidden;
}

.cat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 3px;
  border-radius: 0 0 6px 6px;
  background: var(--grad-text);
  opacity: 0.6;
  transition: var(--transition);
}

.cat-card:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: var(--shadow-md), var(--glow-cyan);
}

.cat-card:hover::before {
  width: 100%;
  opacity: 1;
}

.cat-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  font-size: 28px;
  color: var(--primary);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  transition: var(--transition);
}

.cat-card:hover .cat-icon {
  background: rgba(34, 211, 238, 0.18);
  transform: scale(1.06) rotate(-4deg);
  box-shadow: var(--glow-cyan);
}

.cat-icon.i-purple {
  color: var(--secondary);
  background: rgba(167, 139, 250, 0.1);
  border-color: rgba(167, 139, 250, 0.3);
}

.cat-icon.i-gold {
  color: var(--gold);
  background: rgba(251, 191, 36, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
}

.cat-icon.i-pink {
  color: var(--accent);
  background: rgba(251, 113, 133, 0.1);
  border-color: rgba(251, 113, 133, 0.3);
}

.cat-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.cat-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

.cat-card .cat-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  opacity: 0;
  transform: translateY(6px);
  transition: var(--transition);
}

.cat-card:hover .cat-more {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Timeline ============ */
.timeline-section {
  background:
    linear-gradient(180deg, rgba(13, 20, 37, 0.94), rgba(7, 11, 20, 0.94)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.timeline-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  position: relative;
}

.timeline-item {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  transition: var(--transition);
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 30px;
  right: -14px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--bg-body);
  box-shadow: 0 0 14px rgba(34, 211, 238, 0.7);
  z-index: 2;
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-item:hover {
  transform: translateY(-6px);
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: var(--shadow-md), var(--glow-cyan);
}

.timeline-num {
  font-size: 28px;
  font-weight: 900;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 14px;
}

.timeline-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  margin-bottom: 12px;
}

.timeline-item h4 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ============ Guide Section ============ */
.guide-wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 52px;
  align-items: center;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: guide;
}

.guide-step {
  position: relative;
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.15);
  transition: var(--transition);
}

.guide-step:first-child {
  padding-top: 0;
}

.guide-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.guide-step:hover {
  padding-left: 10px;
}

.step-num {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.3);
  box-shadow: inset 0 0 14px rgba(34, 211, 238, 0.06);
}

.guide-step h4 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 5px;
}

.guide-step p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
}

.guide-media {
  position: relative;
}

.guide-media img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(34, 211, 238, 0.25);
  box-shadow: var(--shadow-md), var(--glow-cyan);
}

.guide-float {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: rgba(7, 11, 20, 0.88);
  border: 1px solid rgba(34, 211, 238, 0.3);
  backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  gap: 14px;
}

.guide-float i {
  font-size: 24px;
  color: var(--gold);
}

.guide-float strong {
  display: block;
  font-size: 15px;
  color: #fff;
  line-height: 1.4;
}

.guide-float span {
  font-size: 13px;
  color: var(--text-weak);
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 880px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(34, 211, 238, 0.35);
}

.faq-item.open {
  border-color: rgba(34, 211, 238, 0.5);
  box-shadow: var(--glow-cyan);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: var(--transition);
}

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

.faq-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: var(--text-weak);
  background: rgba(148, 163, 184, 0.08);
  transition: var(--transition);
  font-size: 14px;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
  background: rgba(34, 211, 238, 0.12);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
  padding: 0 28px;
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.85;
}

.faq-item.open .faq-answer {
  max-height: 320px;
  padding-bottom: 24px;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  padding: 96px 0;
  background:
    linear-gradient(135deg, rgba(7, 11, 20, 0.92), rgba(13, 20, 37, 0.88)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-top: 1px solid rgba(34, 211, 238, 0.15);
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 520px;
  height: 220px;
  background: radial-gradient(ellipse, rgba(34, 211, 238, 0.16), transparent 70%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-inner h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.4px;
}

.cta-inner h2 .grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cta-inner p {
  font-size: 16px;
  color: var(--text-weak);
  margin-bottom: 32px;
  line-height: 1.85;
}

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

/* ============ Footer ============ */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(148, 163, 184, 0.12);
  padding: 66px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.85;
  margin-top: 18px;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.4px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--grad-text);
  border-radius: 2px;
}

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

.footer-col ul li a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-weak);
  transition: var(--transition);
}

.footer-col ul li a i {
  font-size: 12px;
  color: var(--primary);
  transition: transform 0.24s ease;
}

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

.footer-col ul li a:hover i {
  transform: translateX(4px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  padding: 22px 0;
  font-size: 13px;
  color: var(--text-faint);
}

.footer-bottom p {
  margin: 0;
}

.footer-cert {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-cert span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-weak);
}

.footer-cert i {
  color: var(--primary);
  font-size: 13px;
}

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  .cat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .timeline-item::before {
    display: none;
  }

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

  .stats-grid {
    gap: 14px;
  }

  .hero-stat-number {
    font-size: 27px;
  }
}

@media (max-width: 980px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: rgba(7, 11, 20, 0.97);
    padding: 20px 28px 28px;
    border-bottom: 1px solid rgba(34, 211, 238, 0.2);
    transform: translateY(-130%);
    visibility: hidden;
    opacity: 0;
    transition: transform 0.38s ease, opacity 0.38s ease, visibility 0.38s;
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }

  .main-nav.open {
    transform: translateY(0);
    visibility: visible;
    opacity: 1;
  }

  .nav-link {
    padding: 14px 20px;
    font-size: 16px;
    border-radius: 12px;
  }

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

  .nav-link.active {
    background: rgba(34, 211, 238, 0.12);
  }

  .nav-toggle {
    display: block;
  }

  .header-cta {
    display: none;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 20px;
  }

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

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

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: 68px 0;
  }

  .header-inner {
    height: 68px;
  }

  .main-nav {
    top: 68px;
  }

  .brand-text {
    font-size: 18px;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }

  .page-hero {
    padding: 72px 0 60px;
  }

  .hero-title {
    font-size: 30px;
  }

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

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

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

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    margin-top: 40px;
    padding-top: 26px;
    gap: 20px;
  }

  .hero-stat-number {
    font-size: 24px;
  }

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

  .timeline-wrap {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 26px;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 20px;
  }

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

  .guide-step {
    flex-direction: column;
    gap: 12px;
  }

  .guide-float {
    position: relative;
    inset: auto;
    margin-top: 14px;
  }

  .cta-section {
    padding: 70px 0;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }

  .footer-cert {
    justify-content: center;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }
}

/* roulang page: article */
:root {
    --bg: #080d16;
    --bg-deep: #050a12;
    --bg-card: #0e141f;
    --bg-card-glass: rgba(14, 20, 31, 0.62);
    --primary: #00e5ff;
    --primary-light: #5cf2ff;
    --primary-dark: #009dbb;
    --accent: #8b5cf6;
    --accent-light: #a78bfa;
    --text: #e6edf3;
    --text-muted: #94a3b8;
    --text-weak: #64748b;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --glow-primary: rgba(0, 229, 255, 0.35);
    --glow-accent: rgba(139, 92, 246, 0.3);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 999px;
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
    --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --transition: all .3s cubic-bezier(.4, 0, .2, 1);
}
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-main);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
}
a {
    text-decoration: none;
    color: inherit;
    transition: color .2s;
}
ul, ol {
    list-style: none;
}
button, input, textarea {
    font-family: inherit;
    color: inherit;
}
a:focus-visible, button:focus-visible, summary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
    border-radius: 4px;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    line-height: 1.4;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #00a8c8);
    color: #08131b;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.18);
}
.btn-primary:hover, .btn-primary:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 229, 255, 0.35);
    color: #08131b;
}
.btn-outline {
    border: 1px solid rgba(0, 229, 255, 0.45);
    color: var(--primary);
    background: transparent;
}
.btn-outline:hover {
    background: rgba(0, 229, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}
.btn-sm {
    padding: 7px 18px;
    font-size: 13px;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(8, 13, 22, 0.92);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 20px;
    position: relative;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
}
.brand-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #08131b;
    font-size: 17px;
    box-shadow: 0 0 18px rgba(0, 229, 255, 0.3);
}
.brand-text {
    font-size: 19px;
    letter-spacing: 0.5px;
    color: #fff;
}
.brand-text span {
    color: var(--primary);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    position: relative;
    padding: 10px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: 8px;
    transition: var(--transition);
}
.nav-link::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 4px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 4px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .3s;
    box-shadow: 0 0 12px var(--glow-primary);
}
.nav-link:hover, .nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
}
.nav-link.active::after, .nav-link:hover::after {
    transform: scaleX(1);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #fff;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
}
.nav-toggle:hover {
    background: rgba(255, 255, 255, 0.05);
}
.article-hero {
    position: relative;
    padding: 104px 0 80px;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(8, 13, 22, 0.88) 0%, rgba(8, 13, 22, 0.96) 100%);
}
.article-hero::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.35), transparent);
}
.article-hero .container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
}
.article-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
}
.article-breadcrumb a {
    color: var(--text-muted);
}
.article-breadcrumb a:hover {
    color: var(--primary);
}
.article-breadcrumb i {
    font-size: 10px;
    color: var(--text-weak);
}
.current-crumb {
    max-width: 340px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text);
}
.article-cat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.35);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 1px;
    box-shadow: 0 0 18px rgba(0, 229, 255, 0.08);
}
.article-hero h1 {
    font-size: 40px;
    line-height: 1.25;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
    margin-bottom: 24px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}
.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 14px;
    color: var(--text-muted);
}
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta i {
    color: var(--primary);
    font-size: 13px;
}
.article-main-section {
    padding: 56px 0 72px;
    position: relative;
}
.article-main-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
}
.article-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 36px;
}
.article-content-card {
    background: var(--bg-card-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 42px 44px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}
.article-content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    box-shadow: 0 0 20px var(--glow-primary);
}
.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: #cbd5e1;
}
.article-body h2,
.article-body h3,
.article-body h4 {
    color: #f1f5f9;
    font-weight: 700;
    margin-top: 32px;
    margin-bottom: 16px;
    line-height: 1.4;
}
.article-body h2 {
    font-size: 24px;
    padding-left: 14px;
    border-left: 3px solid var(--primary);
}
.article-body h3 {
    font-size: 20px;
}
.article-body p {
    margin-bottom: 16px;
}
.article-body a {
    color: var(--primary);
    border-bottom: 1px solid rgba(0, 229, 255, 0.3);
}
.article-body a:hover {
    color: var(--primary-light);
    border-color: var(--primary);
}
.article-body ul,
.article-body ol {
    margin-bottom: 18px;
    padding-left: 22px;
}
.article-body ul li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 8px;
    list-style: none;
}
.article-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    border-radius: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transform: rotate(45deg);
}
.article-body ol {
    list-style: decimal-leading-zero;
}
.article-body ol li {
    margin-bottom: 8px;
    padding-left: 6px;
}
.article-body blockquote {
    margin: 24px 0;
    padding: 18px 22px;
    border-left: 3px solid var(--accent);
    background: rgba(139, 92, 246, 0.08);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: #d8c3ff;
}
.article-body blockquote p:last-child {
    margin-bottom: 0;
}
.article-body img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin: 24px 0;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}
.article-body table th {
    background: rgba(0, 229, 255, 0.08);
    color: #fff;
    font-weight: 600;
    padding: 10px 14px;
    border: 1px solid var(--border);
}
.article-body table td {
    padding: 10px 14px;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.article-body code {
    background: rgba(139, 92, 246, 0.15);
    color: #d8c3ff;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
}
.article-footer-meta {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.article-tags .tag {
    padding: 5px 14px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-share {
    display: flex;
    gap: 8px;
}
.article-share a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text-muted);
    transition: var(--transition);
}
.article-share a:hover {
    color: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 16px var(--glow-primary);
    transform: translateY(-2px);
}
.article-aside {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.aside-card {
    background: var(--bg-card-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}
.aside-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
}
.aside-card h3 {
    font-size: 16px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.aside-card h3::before {
    content: '';
    width: 3px;
    height: 16px;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
}
.aside-meta-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.aside-meta-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-muted);
}
.aside-meta-list li i {
    color: var(--primary);
    margin-top: 4px;
    font-size: 13px;
    width: 16px;
    text-align: center;
}
.aside-meta-list li strong {
    display: block;
    color: #e2e8f0;
    font-weight: 500;
}
.aside-meta-list li small {
    font-size: 12px;
    color: var(--text-weak);
}
.aside-cat-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.aside-cat-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 11px 14px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}
.aside-cat-list a:hover {
    background: rgba(0, 229, 255, 0.06);
    border-color: rgba(0, 229, 255, 0.3);
    color: var(--primary);
    transform: translateX(4px);
}
.aside-ad-card {
    position: relative;
    padding: 32px 24px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(139, 92, 246, 0.12));
    border: 1px solid rgba(0, 229, 255, 0.25);
    overflow: hidden;
    text-align: center;
}
.aside-ad-card h4 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 8px;
}
.aside-ad-card p {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 16px;
}
.article-not-found {
    text-align: center;
    padding: 80px 24px;
}
.nf-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    font-size: 28px;
    color: var(--primary);
}
.article-not-found h2 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 12px;
}
.article-not-found p {
    color: var(--text-muted);
    margin-bottom: 28px;
}
.related-section {
    padding: 64px 0;
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 36px;
    gap: 16px;
    flex-wrap: wrap;
}
.section-head-center {
    justify-content: center;
    text-align: center;
    flex-direction: column;
    align-items: center;
}
.section-head .sec-tagline {
    color: var(--primary);
    font-size: 13px;
    letter-spacing: 2px;
    font-weight: 600;
    text-transform: uppercase;
}
.section-head h2 {
    font-size: 32px;
    color: #fff;
    font-weight: 800;
    margin-top: 6px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--bg-card-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: var(--shadow-lg);
}
.related-card .thumb {
    height: 170px;
    overflow: hidden;
    position: relative;
}
.related-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s;
}
.related-card:hover .thumb img {
    transform: scale(1.05);
}
.related-card .thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(8, 13, 22, 0.75));
}
.card-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background: rgba(5, 10, 18, 0.7);
    backdrop-filter: blur(8px);
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    border: 1px solid rgba(0, 229, 255, 0.3);
}
.related-card .body {
    padding: 20px;
    flex: 1;
}
.related-card .body h3 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}
.related-card .body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}
.related-card .link-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
}
.related-card .link-btn i {
    transition: transform .2s;
}
.related-card .link-btn:hover i {
    transform: translateX(4px);
}
.cta-section {
    position: relative;
    padding: 80px 0;
    background: url('/assets/images/backpic/back-3.png') center/cover;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(5, 10, 18, 0.94) 0%, rgba(8, 13, 22, 0.88) 50%, rgba(10, 16, 26, 0.92) 100%);
}
.cta-wrapper {
    position: relative;
    text-align: center;
    max-width: 780px;
    margin: 0 auto;
}
.cta-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.25);
    color: var(--primary);
    font-size: 12px;
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 20px;
}
.cta-section h2 {
    font-size: 40px;
    color: #fff;
    font-weight: 800;
    margin-bottom: 16px;
}
.cta-section h2 span {
    background: linear-gradient(90deg, var(--primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.cta-section p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 32px;
}
.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.faq-section {
    padding: 72px 0;
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--bg-card-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 15px;
    font-weight: 600;
    color: #e2e8f0;
    transition: background .25s;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary i {
    transition: transform .3s;
    color: var(--primary);
}
.faq-item[open] summary {
    color: #fff;
    background: rgba(0, 229, 255, 0.04);
}
.faq-item[open] summary i {
    transform: rotate(180deg);
}
.faq-item p {
    padding: 0 22px 18px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.85;
}
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr;
    gap: 40px;
    padding-bottom: 44px;
}
.footer-brand .brand {
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 420px;
}
.footer-col h4 {
    font-size: 15px;
    color: #fff;
    font-weight: 700;
    margin-bottom: 18px;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col ul a {
    font-size: 14px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.footer-col ul a i {
    font-size: 11px;
    color: var(--text-weak);
    transition: all .3s;
}
.footer-col ul a:hover {
    color: var(--primary);
}
.footer-col ul a:hover i {
    color: var(--primary);
    transform: translateX(3px);
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-weak);
}
.footer-cert {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}
.footer-cert span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
}
.footer-cert i {
    color: var(--primary);
}
@media (max-width: 1024px) {
    .article-grid {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-content-card {
        padding: 36px 30px;
    }
    .cta-section h2 {
        font-size: 32px;
    }
}
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    .header-inner {
        height: 62px;
    }
    .main-nav {
        position: fixed;
        top: 62px;
        left: 0;
        right: 0;
        background: rgba(8, 13, 22, 0.98);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px;
        gap: 6px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-130%);
        transition: transform .35s ease;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        z-index: 998;
    }
    .main-nav.open {
        transform: translateY(0);
    }
    .nav-link {
        padding: 12px 14px;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .header-cta {
        display: none;
    }
    .article-hero {
        padding: 70px 0 50px;
    }
    .article-hero h1 {
        font-size: 28px;
    }
    .article-meta {
        flex-direction: column;
        gap: 8px;
    }
    .article-breadcrumb {
        font-size: 12px;
    }
    .article-main-section {
        padding: 36px 0 48px;
    }
    .article-content-card {
        padding: 26px 20px;
        border-radius: 16px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .cta-section {
        padding: 56px 0;
    }
    .cta-section h2 {
        font-size: 28px;
    }
    .faq-section {
        padding: 48px 0;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-brand p {
        max-width: 100%;
    }
}
@media (max-width: 520px) {
    .article-hero h1 {
        font-size: 24px;
    }
    .article-breadcrumb {
        gap: 6px;
    }
    .article-footer-meta {
        flex-direction: column;
        align-items: flex-start;
    }
    .article-content-card {
        padding: 20px 16px;
    }
    .aside-card {
        padding: 18px;
    }
    .cta-buttons .btn {
        width: 100%;
    }
    .footer-cert {
        justify-content: center;
    }
    .section-head h2 {
        font-size: 26px;
    }
}

/* roulang page: category3 */
:root {
  --primary: #00e5ff;
  --primary-dark: #009db8;
  --primary-glow: rgba(0, 229, 255, 0.35);
  --secondary: #a855f7;
  --secondary-glow: rgba(168, 85, 247, 0.3);
  --accent: #f59e0b;
  --bg: #0b0d14;
  --bg-deep: #07080e;
  --bg-card: rgba(18, 22, 32, 0.92);
  --bg-card-hover: rgba(24, 30, 44, 0.98);
  --bg-gradient: radial-gradient(ellipse at 30% 20%, rgba(0,229,255,0.12) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(168,85,247,0.1) 0%, transparent 50%);
  --text: #e9edf5;
  --text-weak: #9aa5b8;
  --text-mute: #6b7689;
  --border: rgba(255,255,255,0.08);
  --border-light: rgba(0,229,255,0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 10px 40px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(0,229,255,0.08), 0 10px 40px rgba(0,0,0,0.4);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Rajdhani", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container: 1200px;
  --space-section: 110px;
  --space-section-mobile: 70px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  background-image: var(--bg-gradient);
  background-attachment: fixed;
}

img { max-width: 100%; display: block; }
a { color: var(--text); text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; }

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

::selection { background: var(--primary); color: #000; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 8, 14, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(7, 8, 14, 0.96);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  border-bottom-color: rgba(0, 229, 255, 0.15);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}

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

.brand-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(168, 85, 247, 0.2));
  border: 1px solid var(--border-light);
  color: var(--primary);
  font-size: 18px;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  font-family: var(--font-display);
  white-space: nowrap;
}

.brand-text span {
  color: var(--primary);
  text-shadow: 0 0 20px var(--primary-glow);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  position: relative;
  padding: 8px 18px;
  font-size: 15px;
  color: var(--text-weak);
  font-weight: 500;
  letter-spacing: 0.3px;
  border-radius: 8px;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
  color: var(--primary);
  text-shadow: 0 0 16px var(--primary-glow);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  box-shadow: 0 0 12px var(--primary-glow);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  transition: var(--transition);
  text-align: center;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #38bdf8);
  color: #041014;
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.35);
  color: #041014;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), #d946ef);
  color: #fff;
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.25);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(168, 85, 247, 0.35);
  color: #fff;
}

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

.btn-outline:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 10px; }

.header-cta { padding: 9px 18px; font-size: 14px; }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 18px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ========== HERO / BANNER ========== */
.page-hero {
  position: relative;
  padding: 160px 0 90px;
  background: linear-gradient(180deg, rgba(7, 8, 14, 0.7) 0%, rgba(11, 13, 20, 0.9) 100%);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center 30%;
  opacity: 0.25;
  filter: saturate(1.2);
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 8, 14, 0.8) 0%, rgba(11, 13, 20, 0.4) 45%, rgba(7, 8, 14, 0.95) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-light);
  border-radius: 40px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 1px;
  background: linear-gradient(90deg, #fff 0%, var(--primary) 50%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content h1 .highlight {
  color: var(--primary);
  -webkit-text-fill-color: var(--primary);
}

.hero-content p {
  font-size: 17px;
  color: var(--text-weak);
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto 30px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-weak);
  font-size: 14px;
}

.hero-meta-item i {
  color: var(--primary);
  font-size: 16px;
}

/* ========== SECTION COMMON ========== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section-dark { background: var(--bg-deep); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-eyebrow::before, .section-eyebrow::after {
  content: '';
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary));
}

.section-eyebrow::after {
  background: linear-gradient(90deg, var(--primary), transparent);
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: 2.4rem;
  line-height: 1.3;
  margin-bottom: 14px;
  color: var(--text);
  letter-spacing: 0.5px;
}

.section-head p {
  color: var(--text-weak);
  font-size: 16px;
  line-height: 1.8;
}

/* ========== LEVEL CARDS ========== */
.level-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.level-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.level-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}

.level-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-light);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.level-card:hover::before { opacity: 1; }

.level-card.featured {
  border-color: var(--border-light);
  box-shadow: var(--shadow-glow);
  background: linear-gradient(170deg, rgba(0, 229, 255, 0.06), rgba(168, 85, 247, 0.04)), var(--bg-card);
}

.level-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.15);
  color: var(--primary);
}

.level-card:nth-child(2) .level-icon { color: #c0c8d4; background: rgba(192, 200, 212, 0.08); border-color: rgba(192, 200, 212, 0.15); }
.level-card:nth-child(3) .level-icon { color: var(--accent); background: rgba(245, 158, 11, 0.08); border-color: rgba(245, 158, 11, 0.15); }
.level-card:nth-child(4) .level-icon { color: #e879f9; background: rgba(232, 121, 249, 0.08); border-color: rgba(232, 121, 249, 0.15); }

.level-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.level-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.15);
  padding: 2px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.level-card:nth-child(2) .level-tag { color: #c0c8d4; background: rgba(192,200,212,0.06); border-color: rgba(192,200,212,0.12); }
.level-card:nth-child(3) .level-tag { color: var(--accent); background: rgba(245,158,11,0.06); border-color: rgba(245,158,11,0.12); }
.level-card:nth-child(4) .level-tag { color: #e879f9; background: rgba(232,121,249,0.06); border-color: rgba(232,121,249,0.12); }

.level-desc {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}

.level-benefits {
  text-align: left;
  margin-top: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.level-benefits li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-weak);
  padding: 4px 0;
}

.level-benefits li i {
  color: var(--primary);
  font-size: 12px;
  flex-shrink: 0;
}

/* ========== BENEFIT GRID ========== */
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.benefit-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle at top right, rgba(0, 229, 255, 0.06), transparent 70%);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.benefit-card:hover::after {
  background: radial-gradient(circle at top right, rgba(0, 229, 255, 0.1), transparent 70%);
}

.benefit-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(168, 85, 247, 0.08));
  border: 1px solid rgba(0, 229, 255, 0.15);
  color: var(--primary);
}

.benefit-card:nth-child(2) .benefit-icon { color: var(--secondary); background: linear-gradient(135deg, rgba(168,85,247,0.12), rgba(0,229,255,0.06)); border-color: rgba(168,85,247,0.2); }
.benefit-card:nth-child(3) .benefit-icon { color: var(--accent); background: linear-gradient(135deg, rgba(245,158,11,0.12), rgba(168,85,247,0.06)); border-color: rgba(245,158,11,0.2); }
.benefit-card:nth-child(4) .benefit-icon { color: #38bdf8; background: linear-gradient(135deg, rgba(56,189,248,0.12), rgba(0,229,255,0.06)); border-color: rgba(56,189,248,0.2); }
.benefit-card:nth-child(5) .benefit-icon { color: #f472b6; background: linear-gradient(135deg, rgba(244,114,182,0.12), rgba(168,85,247,0.06)); border-color: rgba(244,114,182,0.2); }
.benefit-card:nth-child(6) .benefit-icon { color: #34d399; background: linear-gradient(135deg, rgba(52,211,153,0.12), rgba(0,229,255,0.06)); border-color: rgba(52,211,153,0.2); }

.benefit-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}

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

/* ========== GROWTH RULES ========== */
.growth-section {
  position: relative;
  overflow: hidden;
}

.growth-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.08;
}

.growth-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.growth-content h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  margin-bottom: 18px;
  line-height: 1.3;
}

.growth-content > p {
  color: var(--text-weak);
  margin-bottom: 32px;
  line-height: 1.8;
}

.growth-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.growth-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  background: rgba(18, 22, 32, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.growth-item:hover {
  border-color: var(--border-light);
  transform: translateX(4px);
}

.growth-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  text-shadow: 0 0 20px var(--primary-glow);
  min-width: 44px;
}

.growth-item h4 {
  font-size: 16px;
  margin-bottom: 4px;
}

.growth-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
}

.growth-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.growth-visual img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  filter: saturate(1.1);
  transition: transform 0.6s ease;
}

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

.growth-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(7, 8, 14, 0.92) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
}

.growth-visual-overlay h4 {
  font-family: var(--font-display);
  font-size: 20px;
  margin-bottom: 6px;
}

.growth-visual-overlay p {
  font-size: 14px;
  color: var(--text-weak);
}

/* ========== STATS ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 35px 24px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 15px;
  color: var(--text-weak);
}

/* ========== FAQ ========== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover { border-color: rgba(0, 229, 255, 0.15); }

.faq-question {
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
}

.faq-question i {
  color: var(--primary);
  font-size: 14px;
  transition: var(--transition);
  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;
}

.faq-answer p {
  padding: 0 28px 22px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

/* ========== CTA ========== */
.cta-section {
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7,8,14,0.7), rgba(11,13,20,0.85));
}

.cta-box {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 660px;
  margin: 0 auto;
  padding: 56px 48px;
  background: rgba(18, 22, 32, 0.8);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.cta-box h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.cta-box p {
  color: var(--text-weak);
  margin-bottom: 30px;
  font-size: 16px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ========== FOOTER ========== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 70px 0 0;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 400px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.4;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
}

.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p { color: var(--text-mute); font-size: 14px; line-height: 1.8; }

.footer-col h4 {
  font-size: 16px;
  margin-bottom: 20px;
  color: var(--text);
  letter-spacing: 0.5px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
}

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

.footer-col ul a {
  color: var(--text-mute);
  font-size: 14px;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-col ul a i {
  margin-right: 6px;
  font-size: 12px;
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-bottom p { color: var(--text-mute); font-size: 14px; }

.footer-cert {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-cert span {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-mute);
  font-size: 13px;
}

.footer-cert span i { color: var(--primary); }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .level-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .growth-inner { grid-template-columns: 1fr; gap: 40px; }
  .growth-visual img { height: 400px; }
  .hero-content h1 { font-size: 2.6rem; }
  .section-head h2 { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-section: 70px; }
  .container { padding: 0 18px; }
  .header-inner { height: 64px; }
  .brand-text { font-size: 18px; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(7, 8, 14, 0.98);
    flex-direction: column;
    padding: 16px 20px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 999;
    backdrop-filter: blur(20px);
  }
  .main-nav.open { transform: translateY(0); }
  .nav-link { width: 100%; padding: 14px 18px; font-size: 16px; }
  .nav-link.active::after { left: 18px; right: auto; width: 32px; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  .page-hero { padding: 130px 0 60px; }
  .hero-content h1 { font-size: 2rem; }
  .hero-content p { font-size: 15px; }
  .hero-meta { gap: 16px; }
  .growth-visual img { height: 300px; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.7rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-cert { justify-content: center; }
}

@media (max-width: 520px) {
  .level-grid { grid-template-columns: 1fr; }
  .benefit-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-num { font-size: 2.2rem; }
  .stat-card { padding: 24px 16px; }
  .hero-content h1 { font-size: 1.7rem; }
  .hero-actions .btn, .cta-actions .btn { width: 100%; }
  .section-head h2 { font-size: 1.6rem; }
  .growth-item { flex-direction: column; gap: 8px; }
  .growth-visual img { height: 240px; }
  .growth-visual-overlay { padding: 20px; }
  .faq-question { padding: 18px 20px; font-size: 15px; }
  .faq-answer p { padding: 0 20px 18px; }
  .footer-cert { flex-direction: column; gap: 8px; }
}