/* roulang page: index */
:root {
  --bg-page: #F3F6FB;
  --bg-card: #FFFFFF;
  --brand: #1E4E8C;
  --brand-hover: #2F6FD8;
  --neon: #00E0FF;
  --neon-hover: #33E8FF;
  --nav-bg: #0B1524;
  --nav-text: #E6EDF7;
  --text-main: #1F2A3A;
  --text-sub: #5A6B80;
  --text-weak: #8A99AC;
  --border: #E4EBF3;
  --gold: #D4A53C;
  --radius: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 4px 20px rgba(15,42,78,0.08);
  --shadow-hover: 0 12px 32px rgba(15,42,78,0.14);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }
:focus-visible { outline: 3px solid rgba(47,111,216,0.25); outline-offset: 2px; border-radius: 4px; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

.section { padding: 80px 0; }
@media (max-width: 768px) { .section { padding: 48px 0; } }
.section h2 { font-size: 32px; text-align: center; font-weight: 700; color: var(--brand); line-height: 1.3; }
@media (max-width: 768px) { .section h2 { font-size: 26px; } }
.section-lead { color: var(--text-sub); font-size: 16px; text-align: center; margin-top: 10px; }

/* ===== Header / Nav ===== */
.site-header {
  background: var(--nav-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 68px;
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; position: relative; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--neon); color: var(--nav-bg);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px;
}
.logo-text { color: var(--nav-text); font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.nav-link {
  color: rgba(230,237,247,0.85);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  transition: color 0.3s, box-shadow 0.3s;
  position: relative;
}
.nav-link:hover { color: #fff; }
.nav-link.active { color: var(--neon); box-shadow: 0 2px 8px rgba(0,224,255,0.7); }
.btn-nav-cta {
  background: var(--neon);
  color: var(--nav-bg);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  transition: background 0.3s, transform 0.2s;
  white-space: nowrap;
}
.btn-nav-cta:hover { background: var(--neon-hover); }
.btn-nav-cta:active { transform: translateY(1px); }
.nav-toggle { display: none; width: 40px; height: 40px; flex-direction: column; justify-content: center; gap: 5px; align-items: center; flex-shrink: 0; }
.nav-toggle span { width: 22px; height: 2px; background: var(--nav-text); border-radius: 2px; transition: background 0.3s; }
.nav-toggle:hover span { background: var(--neon); }

@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 24px 32px;
    gap: 20px;
    display: none;
    border-bottom: 2px solid rgba(0,224,255,0.4);
    box-shadow: 0 16px 32px rgba(0,0,0,0.3);
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .btn-nav-cta { width: 100%; text-align: center; margin-top: 8px; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  transition: all 0.3s ease;
  border: 1px solid transparent;
}
.btn-lg { padding: 14px 36px; font-size: 16px; height: 52px; }
.btn-xl { padding: 16px 44px; font-size: 17px; height: 56px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(47,111,216,0.25); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary { background: #fff; color: var(--brand); border-color: #C9D6E5; }
.btn-secondary:hover { border-color: var(--brand-hover); color: var(--brand-hover); transform: translateY(-2px); }
.btn-secondary:active { transform: translateY(0); }

/* ===== Hero ===== */
.hero { background: var(--bg-page); padding: 100px 0 80px; position: relative; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(47,111,216,0.08) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(0,224,255,0.08) 0, transparent 40%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(30,78,140,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,78,140,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.hero-content { animation: fadeInUp 0.8s ease; }
.hero-content h1 { font-size: clamp(36px, 4vw, 48px); font-weight: 700; color: var(--brand); line-height: 1.3; margin-bottom: 20px; }
.hero-sub { font-size: 18px; color: var(--text-sub); margin-bottom: 32px; max-width: 460px; line-height: 1.75; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual img { border-radius: 20px; box-shadow: 0 20px 50px rgba(15,42,78,0.18); }
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (max-width: 1024px) {
  .hero { padding: 70px 0 50px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; text-align: center; }
}

/* ===== Carousel ===== */
.carousel-section { background: var(--bg-card); border-top: 1px solid var(--border); }
.carousel-wrap { position: relative; margin-top: 44px; }
.carousel { display: flex; gap: 24px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 20px; scrollbar-width: none; }
.carousel::-webkit-scrollbar { display: none; }
.carousel-card { flex: 0 0 38%; scroll-snap-align: center; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-card); overflow: hidden; transition: box-shadow 0.3s, transform 0.3s; }
.carousel-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.carousel-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.carousel-card .car-body { padding: 20px 24px 24px; }
.carousel-card h3 { font-size: 18px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.carousel-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
.carousel-controls { display: flex; justify-content: center; align-items: center; gap: 16px; margin-top: 16px; }
.carousel-arrow {
  width: 44px; height: 44px; border-radius: 50%;
  background: #fff; border: 1px solid var(--border);
  color: var(--brand); font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
}
.carousel-arrow:hover { background: var(--brand); color: #fff; border-color: var(--brand); }
.carousel-arrow:active { transform: scale(0.95); }
.carousel-dots { display: flex; gap: 8px; }
.carousel-dots button { width: 8px; height: 8px; border-radius: 50%; background: #C9D6E5; transition: all 0.3s; padding: 0; }
.carousel-dots button.active { background: var(--brand); width: 24px; border-radius: 4px; }
@media (max-width: 1024px) { .carousel-card { flex-basis: 45%; } }
@media (max-width: 640px) { .carousel-card { flex-basis: 85%; } }

/* ===== Support ===== */
.support-section { background: var(--bg-page); }
.support-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.support-list { display: flex; flex-direction: column; gap: 24px; }
.support-item { display: flex; gap: 16px; align-items: flex-start; }
.support-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: #EAF1F9; color: var(--brand);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 700; flex-shrink: 0;
  box-shadow: var(--shadow-card);
}
.support-info strong { display: block; font-size: 16px; color: var(--text-main); margin-bottom: 4px; }
.support-info p { font-size: 14px; color: var(--text-sub); }
.support-side { background: #fff; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-card); }
.support-side h3 { font-size: 20px; color: var(--brand); margin-bottom: 20px; font-weight: 700; }
.support-side li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 0; border-bottom: 1px solid var(--border);
  font-size: 15px; color: var(--text-sub); line-height: 1.7;
}
.support-side li::before { content: "✓"; color: var(--brand); font-weight: 700; flex-shrink: 0; }
.support-side li:last-child { border-bottom: none; }
@media (max-width: 768px) {
  .support-grid { grid-template-columns: 1fr; gap: 40px; }
  .support-side { padding: 24px; }
}

/* ===== Reviews ===== */
.review-section { background: var(--bg-card); border-top: 1px solid var(--border); }
.review-summary { display: flex; align-items: center; justify-content: center; gap: 16px; margin: 24px 0 40px; flex-wrap: wrap; }
.score { font-size: 40px; font-weight: 800; color: var(--brand); line-height: 1; }
.stars { color: var(--gold); font-size: 20px; letter-spacing: 2px; }
.review-summary span:last-child { font-size: 14px; color: var(--text-sub); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s, transform 0.3s;
}
.review-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.review-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: #EAF1F9; color: var(--brand);
  font-weight: 700; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.review-name { font-size: 15px; font-weight: 600; color: var(--text-main); }
.review-source {
  font-size: 12px; color: var(--text-weak);
  background: #F0F4F9; padding: 2px 8px; border-radius: 999px;
}
.review-text { font-size: 14px; color: var(--text-sub); line-height: 1.75; }
@media (max-width: 1024px) { .review-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .review-grid { grid-template-columns: 1fr; } }

/* ===== Download ===== */
.download-section { background: var(--bg-page); }
.download-inner { text-align: center; max-width: 720px; margin: 0 auto; }
.download-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
.version-text { font-size: 13px; color: var(--text-weak); margin-top: 20px; }
.qr-placeholder {
  width: 120px; height: 120px; margin: 24px auto 0;
  border: 2px dashed var(--border); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-weak); font-size: 13px; background: #fff;
}
@media (max-width: 640px) { .download-buttons { flex-direction: column; } }

/* ===== News ===== */
.news-section { background: var(--bg-card); border-top: 1px solid var(--border); }
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.news-card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-card);
  overflow: hidden; transition: box-shadow 0.3s, transform 0.3s;
  display: flex; flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.news-cover { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-card:hover .news-cover img { transform: scale(1.05); }
.news-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.badge {
  display: inline-block;
  background: #EAF1F9; color: var(--brand);
  font-size: 12px; font-weight: 500;
  padding: 4px 12px; border-radius: 999px;
  margin-bottom: 10px; align-self: flex-start;
}
.news-body h3 { font-size: 17px; font-weight: 700; color: var(--text-main); line-height: 1.45; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body h3 a { transition: color 0.3s; }
.news-body h3 a:hover { color: var(--brand-hover); }
.news-body > p { font-size: 14px; color: var(--text-sub); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; }
.news-meta time { font-size: 13px; color: var(--text-weak); }
.news-meta a { font-size: 14px; color: var(--brand); font-weight: 600; transition: color 0.3s; }
.news-meta a:hover { color: var(--brand-hover); }
.news-empty {
  grid-column: 1 / -1; text-align: center;
  padding: 60px 20px; color: var(--text-weak);
  background: var(--bg-page); border-radius: var(--radius);
  font-size: 15px;
}
@media (max-width: 1024px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .news-grid { grid-template-columns: 1fr; } }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-page); }
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff; border: 1px solid var(--border);
  border-radius: 14px; margin-bottom: 14px; overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.faq-item:hover { border-color: #C9D6E5; box-shadow: var(--shadow-card); }
.faq-question {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; font-size: 16px; font-weight: 600;
  color: var(--text-main); transition: color 0.3s; text-align: left;
}
.faq-question:hover { color: var(--brand); }
.faq-question .icon { transition: transform 0.3s; color: var(--brand); font-size: 22px; font-weight: 400; line-height: 1; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 24px; color: var(--text-sub); font-size: 15px; line-height: 1.75; }
.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 20px; }

/* ===== CTA ===== */
.cta-section { background: var(--nav-bg); }
.cta-box { text-align: center; padding: 64px 24px; position: relative; }
.cta-box::before {
  content: "";
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 80%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
}
.cta-box h2 { color: #fff; font-size: 30px; margin-bottom: 12px; font-weight: 700; line-height: 1.3; }
.cta-box p { color: rgba(255,255,255,0.7); margin-bottom: 32px; font-size: 16px; }
@media (max-width: 768px) { .cta-box h2 { font-size: 24px; } }

/* ===== Footer ===== */
.site-footer { background: var(--nav-bg); color: var(--nav-text); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; }
.footer-brand .logo-text { font-size: 20px; display: block; margin-bottom: 12px; }
.footer-brand p { color: var(--text-weak); font-size: 14px; max-width: 280px; line-height: 1.7; }
.footer-col h3 { font-size: 16px; color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-col a { display: block; font-size: 14px; color: var(--text-weak); padding: 6px 0; transition: color 0.3s; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0; text-align: center; font-size: 12px;
  color: var(--text-weak);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px;
}
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }

/* roulang page: category1 */
:root {
            --color-primary: #1E4E8C;
            --color-primary-light: #2F6FD8;
            --color-neon: #00E0FF;
            --color-neon-light: #33E8FF;
            --color-bg: #F3F6FB;
            --color-card: #FFFFFF;
            --color-dark: #0B1524;
            --color-dark-soft: #0D1B2E;
            --color-text: #1F2A3A;
            --color-text-secondary: #5A6B80;
            --color-text-muted: #8A99AC;
            --color-border: #E4EBF3;
            --color-line: #C9D6E5;
            --color-gold: #D4A53C;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(15, 42, 78, 0.08);
            --shadow-card-hover: 0 12px 32px rgba(15, 42, 78, 0.14);
            --shadow-image: 0 8px 24px rgba(15, 42, 78, 0.12);
            --focus-ring: 0 0 0 3px rgba(47, 111, 216, 0.25);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding: 88px 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .text-primary {
            color: var(--color-primary) !important;
        }
        .text-secondary {
            color: var(--color-text-secondary) !important;
        }
        .text-muted {
            color: var(--color-text-muted) !important;
        }
        .bg-primary {
            background-color: var(--color-primary) !important;
        }
        .bg-secondary-light {
            background-color: var(--color-bg) !important;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--color-primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            min-height: 48px;
        }
        .btn-primary:hover {
            background-color: var(--color-primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 78, 140, 0.25);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #fff;
            color: var(--color-primary);
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            border: 1px solid var(--color-line);
            transition: all 0.3s ease;
            cursor: pointer;
            min-height: 48px;
        }
        .btn-secondary:hover {
            border-color: var(--color-primary-light);
            color: var(--color-primary-light);
            background-color: #F9FCFF;
        }
        .btn-secondary:active {
            transform: translateY(1px);
        }
        .btn-secondary:focus-visible {
            outline: none;
            box-shadow: var(--focus-ring);
        }
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--color-neon);
            color: #0B1524;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 700;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
        }
        .btn-neon:hover {
            background-color: var(--color-neon-light);
            box-shadow: 0 0 20px rgba(0, 224, 255, 0.4);
        }
        .btn-neon:active {
            transform: translateY(1px);
        }
        .btn-lg {
            min-height: 56px;
            padding: 16px 42px;
            font-size: 17px;
        }
        .card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.4s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            background-color: #EAF1F9;
            color: var(--color-primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }
        .badge-neon {
            background-color: rgba(0, 224, 255, 0.12);
            color: var(--color-neon);
        }
        .divider {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 0;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: var(--color-dark);
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--color-neon) 0%, transparent 70%) 1;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }
        .logo-mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-neon), #4F8DF9);
            color: #0B1524;
            font-size: 18px;
            font-weight: 800;
            border-radius: 10px;
            box-shadow: 0 0 16px rgba(0, 224, 255, 0.3);
        }
        .logo-text {
            font-size: 18px;
            letter-spacing: 0.5px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            color: #E6EDF7;
            font-size: 15px;
            font-weight: 500;
            padding: 10px 16px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .nav-link.active {
            color: var(--color-neon);
            box-shadow: 0 2px 8px rgba(0, 224, 255, 0.7);
            text-shadow: 0 0 12px rgba(0, 224, 255, 0.3);
        }
        .btn-nav-cta {
            background-color: var(--color-neon);
            color: #0B1524;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 14px;
            margin-left: 12px;
            transition: all 0.3s ease;
        }
        .btn-nav-cta:hover {
            background-color: var(--color-neon-light);
            box-shadow: 0 0 20px rgba(0, 224, 255, 0.4);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: transparent;
            padding: 8px;
        }
        .nav-toggle span {
            width: 24px;
            height: 2px;
            background-color: #E6EDF7;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }
        /* Hero */
        .hero-banner {
            background: linear-gradient(135deg, #0D1B2E 0%, #1E3A5F 50%, #1E4E8C 100%);
            position: relative;
            overflow: hidden;
            padding: 100px 0;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            mix-blend-mode: overlay;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(13, 27, 46, 0.9) 0%, rgba(13, 27, 46, 0.6) 50%, rgba(30, 78, 140, 0.4) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(0, 224, 255, 0.15);
            border: 1px solid rgba(0, 224, 255, 0.3);
            color: var(--color-neon);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 14px;
            margin-bottom: 20px;
        }
        /* Footer */
        .site-footer {
            background-color: var(--color-dark);
            color: #8A99AC;
            padding-top: 64px;
            border-top: 2px solid var(--color-neon);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: block;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: #8A99AC;
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: #8A99AC;
            font-size: 14px;
            padding: 6px 0;
            transition: all 0.3s ease;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: #64748b;
        }
        /* FAQ */
        .faq-item {
            background-color: #fff;
            border-radius: 12px;
            border: 1px solid var(--color-border);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--color-line);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            transition: all 0.3s ease;
        }
        .faq-question:hover {
            color: var(--color-primary-light);
        }
        .faq-question .fa {
            transition: transform 0.3s ease;
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 24px;
        }
        .faq-item.active .faq-question .fa {
            transform: rotate(45deg);
        }
        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--color-neon), var(--color-primary));
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--color-neon);
            box-shadow: 0 0 12px rgba(0, 224, 255, 0.5);
        }
        /* Image card */
        .image-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-image);
            transition: all 0.4s ease;
        }
        .image-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .image-card img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            transition: all 0.5s ease;
        }
        .image-card:hover img {
            transform: scale(1.05);
        }
        .image-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 21, 36, 0.8) 100%);
            display: flex;
            align-items: flex-end;
            padding: 24px;
        }
        .image-card-overlay h3 {
            color: #fff;
            font-size: 18px;
            font-weight: 600;
        }
        /* Stat */
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .stat-label {
            color: var(--color-text-secondary);
            font-size: 14px;
            margin-top: 8px;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--color-dark) 0%, #1E3A5F 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background-color: var(--color-dark);
                flex-direction: column;
                padding: 24px;
                gap: 4px;
                border-bottom: 2px solid var(--color-neon);
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                display: block;
                padding: 14px 16px;
                font-size: 16px;
            }
            .btn-nav-cta {
                margin-top: 12px;
                margin-left: 0;
                text-align: center;
            }
            .nav-toggle {
                display: flex;
            }
            .section {
                padding: 56px 0;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-banner {
                padding: 60px 0;
            }
            .stat-number {
                font-size: 32px;
            }
        }
        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }
            .section {
                padding: 48px 0;
            }
            .btn-lg {
                width: 100%;
                padding: 16px 20px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1E4E8C;
            --primary-hover: #2F6FD8;
            --neon: #00E0FF;
            --neon-hover: #33E8FF;
            --dark-bg: #0B1524;
            --dark-text: #E6EDF7;
            --bg-page: #F3F6FB;
            --bg-card: #FFFFFF;
            --text-main: #1F2A3A;
            --text-sub: #5A6B80;
            --text-aux: #8A99AC;
            --border-color: #E4EBF3;
            --border-input: #C9D6E5;
            --gold: #D4A53C;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(15, 42, 78, 0.08);
            --shadow-hover: 0 12px 32px rgba(15, 42, 78, 0.14);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 111, 216, 0.25);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--border-input);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            box-shadow: var(--shadow-card);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-secondary:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 111, 216, 0.25);
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
            border-radius: 12px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--dark-bg);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .site-header::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon) 0%, rgba(0, 224, 255, 0.5) 40%, transparent 100%);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

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

        .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--neon);
            color: var(--dark-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            font-size: 18px;
            font-weight: 700;
        }

        .logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            color: var(--dark-text);
            font-size: 15px;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .nav-link.active {
            color: var(--neon);
            box-shadow: 0 2px 8px rgba(0, 224, 255, 0.7);
            background: rgba(0, 224, 255, 0.06);
        }

        .btn-nav-cta {
            background: var(--neon);
            color: var(--dark-bg);
            padding: 8px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            transition: all 0.3s ease;
            margin-left: 12px;
        }

        .btn-nav-cta:hover {
            background: var(--neon-hover);
            box-shadow: 0 0 16px rgba(0, 224, 255, 0.6);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        /* ===== Page Title Bar ===== */
        .page-title-bar {
            background: #fff;
            border-bottom: 1px solid var(--border-color);
            padding: 48px 0 40px;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-aux);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.3s;
        }

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

        .breadcrumb .sep {
            color: #c0cbd6;
        }

        .breadcrumb .current {
            color: var(--text-sub);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            display: inline-block;
        }

        .page-title-bar h1 {
            font-size: clamp(28px, 3.5vw, 38px);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: var(--text-aux);
        }

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

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

        /* ===== Article Body ===== */
        .article-wrap {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 44px 48px;
            margin-top: 32px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            max-width: 760px;
            margin: 0 auto;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            margin-top: 40px;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }

        .article-content h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text-main);
            margin-top: 32px;
            margin-bottom: 14px;
        }

        .article-content p {
            margin-bottom: 22px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #EAF1F9;
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
            color: var(--text-sub);
            font-style: normal;
        }

        .article-content img {
            border-radius: var(--radius-card);
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-content ul {
            padding-left: 8px;
            margin-bottom: 22px;
            list-style: none;
        }

        .article-content ul li {
            padding-left: 22px;
            position: relative;
            margin-bottom: 8px;
        }

        .article-content ul li::before {
            content: '';
            position: absolute;
            left: 2px;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
        }

        .article-content ol {
            padding-left: 24px;
            margin-bottom: 22px;
        }

        .article-content ol li {
            margin-bottom: 8px;
        }

        .article-content a {
            color: var(--primary-hover);
            border-bottom: 1px solid rgba(47, 111, 216, 0.3);
        }

        .article-content a:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        /* ===== Post Nav ===== */
        .post-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            max-width: 760px;
            margin: 32px auto 0;
            padding: 20px 0;
            border-top: 1px solid var(--border-color);
        }

        .post-nav a {
            font-size: 14px;
            color: var(--text-sub);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: color 0.3s;
        }

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

        .post-nav .back-list {
            color: var(--primary);
            font-weight: 600;
            padding: 8px 20px;
            border: 1px solid var(--border-input);
            border-radius: 8px;
            transition: all 0.3s;
        }

        .post-nav .back-list:hover {
            border-color: var(--primary-hover);
            background: #f0f5fb;
        }

        /* ===== Related ===== */
        .related-section {
            max-width: 1240px;
            margin: 56px auto 0;
            padding-top: 40px;
        }

        .related-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .related-section .related-sub {
            font-size: 14px;
            color: var(--text-aux);
            margin-bottom: 28px;
        }

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

        .related-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.35s ease;
        }

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

        .related-card .rc-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #eaf1f9;
        }

        .related-card .rc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-card .rc-body {
            padding: 20px 22px 24px;
        }

        .related-card .rc-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: #EAF1F9;
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 10px;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.3s;
        }

        .related-card:hover h3 {
            color: var(--primary-hover);
        }

        .related-card .rc-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .rc-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-aux);
        }

        .related-card .rc-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.3s;
        }

        .related-card .rc-more:hover {
            gap: 8px;
        }

        /* ===== Not Found ===== */
        .not-found {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 80px 40px;
            text-align: center;
            margin-top: 32px;
        }

        .not-found i {
            font-size: 48px;
            color: var(--border-input);
            margin-bottom: 20px;
        }

        .not-found h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 24px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--dark-bg);
            padding: 56px 0;
            margin-top: 72px;
        }

        .cta-section .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .cta-section p {
            color: rgba(230, 237, 247, 0.7);
            font-size: 15px;
            margin-bottom: 28px;
            max-width: 420px;
        }

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

        .cta-section .btn-primary {
            background: var(--neon);
            color: var(--dark-bg);
        }

        .cta-section .btn-primary:hover {
            background: var(--neon-hover);
            box-shadow: 0 8px 24px rgba(0, 224, 255, 0.4);
        }

        .cta-section .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .cta-section .btn-secondary:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-bg);
            padding: 56px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 20px;
        }

        .footer-brand p {
            color: var(--text-aux);
            font-size: 14px;
            margin-top: 14px;
            line-height: 1.6;
            max-width: 280px;
        }

        .footer-col h3 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: var(--text-aux);
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom p {
            color: var(--text-aux);
            font-size: 12px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--dark-bg);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px 30px;
                gap: 8px;
                display: none;
                border-bottom: 2px solid rgba(0, 224, 255, 0.4);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav .nav-link {
                padding: 12px 14px;
                font-size: 16px;
            }

            .btn-nav-cta {
                margin-left: 0;
                margin-top: 12px;
                text-align: center;
                padding: 12px 20px;
            }

            .nav-toggle {
                display: flex;
            }

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

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .page-title-bar {
                padding: 32px 0 28px;
            }

            .page-title-bar h1 {
                font-size: 28px;
            }

            .post-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-wrap {
                padding: 24px 20px;
                margin-top: 20px;
            }

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

            .post-nav {
                flex-wrap: wrap;
                justify-content: center;
            }

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

            .cta-section h2 {
                font-size: 22px;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-secondary {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom .container {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }

            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-page: #F3F6FB;
            --bg-card: #FFFFFF;
            --brand: #1E4E8C;
            --brand-hover: #2F6FD8;
            --neon: #00E0FF;
            --nav-bg: #0B1524;
            --gold: #D4A53C;
            --text-main: #1F2A3A;
            --text-sub: #5A6B80;
            --text-weak: #8A99AC;
            --line: #E4EBF3;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 4px 20px rgba(15, 42, 78, 0.08);
            --shadow-hover: 0 12px 32px rgba(15, 42, 78, 0.14);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ---------- Header / Nav ---------- */
        .site-header {
            background: var(--nav-bg);
            position: sticky;
            top: 0;
            z-index: 100;
            height: 68px;
            display: flex;
            align-items: center;
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--neon), transparent 60%) 1;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
        }

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

        .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--neon);
            color: #081120;
            font-weight: 700;
            font-size: 20px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 14px rgba(0, 224, 255, 0.55);
        }

        .logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            color: #E6EDF7;
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            transition: color .2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 6px;
        }

        .nav-link.active {
            color: var(--neon);
            box-shadow: 0 2px 8px rgba(0, 224, 255, 0.7);
            text-shadow: 0 0 12px rgba(0, 224, 255, 0.4);
        }

        .btn-nav-cta {
            background: var(--neon);
            color: #081120;
            font-weight: 600;
            font-size: 14px;
            padding: 9px 22px;
            border-radius: var(--radius-btn);
            transition: background .2s ease, transform .1s ease;
            white-space: nowrap;
            display: inline-block;
        }

        .btn-nav-cta:hover {
            background: #33E8FF;
        }

        .btn-nav-cta:active {
            transform: translateY(1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: #E6EDF7;
            border-radius: 2px;
            transition: transform .2s ease, opacity .2s ease;
        }

        .btn-nav-cta:focus-visible,
        .nav-link:focus-visible,
        .nav-toggle:focus-visible {
            outline: 3px solid rgba(0, 224, 255, 0.6);
            outline-offset: 2px;
        }

        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
            }
            .logo-text {
                font-size: 16px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--nav-bg);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 16px 24px 24px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav .nav-link {
                padding: 14px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .main-nav .btn-nav-cta {
                margin-top: 20px;
                text-align: center;
                padding: 12px;
            }
        }

        /* ---------- Buttons ---------- */
        .btn-primary {
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background .2s ease, transform .1s ease, box-shadow .2s ease;
            box-shadow: 0 4px 14px rgba(30, 78, 140, 0.25);
        }

        .btn-primary:hover {
            background: var(--brand-hover);
            box-shadow: 0 6px 20px rgba(47, 111, 216, 0.35);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-secondary {
            background: #fff;
            color: var(--brand);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid #C9D6E5;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: border-color .2s ease, background .2s ease, transform .1s ease;
        }

        .btn-secondary:hover {
            border-color: var(--brand);
            background: #F0F5FB;
            color: var(--brand);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .btn-primary:focus-visible,
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(47, 111, 216, 0.25);
            outline-offset: 2px;
        }

        /* ---------- Cards ---------- */
        .card-base {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: box-shadow .3s ease, transform .3s ease;
        }

        .card-base:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        /* ---------- Section ---------- */
        .section {
            padding: 90px 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
        }

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

        .section-header .sub-title {
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 2px;
            margin-bottom: 12px;
            display: inline-block;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 16px;
        }

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

        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 24px;
            }
        }

        /* ---------- Hero ---------- */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #0B1524 0%, #10233C 55%, #1A3A5C 100%);
            padding: 100px 0;
            color: #fff;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 21, 36, 0.85) 0%, rgba(11, 21, 36, 0.55) 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero .crumb {
            font-size: 13px;
            color: rgba(230, 237, 247, 0.75);
            margin-bottom: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }

        .category-hero .crumb a {
            color: var(--neon);
        }

        .category-hero h1 {
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            color: #fff;
        }

        .category-hero .subtitle {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(230, 237, 247, 0.9);
            max-width: 640px;
            margin-bottom: 32px;
        }

        .hero-ctas {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 60px 0;
            }
            .hero-ctas {
                flex-direction: column;
            }
            .hero-ctas .btn-primary,
            .hero-ctas .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ---------- Info Cards Grid ---------- */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        .news-card {
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .news-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

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

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

        .news-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card .card-tag {
            display: inline-block;
            background: #EAF1F9;
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .news-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .2s ease;
        }

        .news-card a:hover h3 {
            color: var(--brand-hover);
        }

        .news-card .summary {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-weak);
        }

        .news-card .read-more {
            color: var(--brand);
            font-weight: 600;
            font-size: 13px;
            transition: color .2s ease;
        }

        .news-card .read-more:hover {
            color: var(--brand-hover);
        }

        /* ---------- Feature Module ---------- */
        .feature-band {
            background: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

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

        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .feature-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .feature-icon {
            width: 46px;
            height: 46px;
            background: #EAF1F9;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand);
            font-size: 20px;
            flex-shrink: 0;
            font-weight: 600;
        }

        .feature-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .feature-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ---------- Process ---------- */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        .process-step {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            position: relative;
            text-align: center;
            transition: box-shadow .3s ease, transform .3s ease;
        }

        .process-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .process-step .step-num {
            width: 36px;
            height: 36px;
            background: var(--brand);
            color: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ---------- FAQ ---------- */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            text-align: left;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            transition: color .2s ease;
        }

        .faq-toggle:hover {
            color: var(--brand);
        }

        .faq-toggle .icon {
            color: var(--brand);
            font-size: 22px;
            font-weight: 300;
            transition: transform .3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-toggle .icon {
            transform: rotate(45deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-content-inner {
            padding: 0 24px 22px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
        }

        /* ---------- CTA ---------- */
        .cta-band {
            background: linear-gradient(135deg, #0B1524, #112B44);
            padding: 72px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .cta-band .container {
            position: relative;
            z-index: 1;
        }

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

        .cta-band p {
            font-size: 16px;
            color: rgba(230, 237, 247, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .cta-band .btn-primary {
            background: var(--neon);
            color: #081120;
            box-shadow: 0 4px 20px rgba(0, 224, 255, 0.3);
        }

        .cta-band .btn-primary:hover {
            background: #33E8FF;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--nav-bg);
            color: #fff;
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        .footer-brand .logo-text {
            font-size: 20px;
            margin-bottom: 12px;
            display: block;
        }

        .footer-brand p {
            color: #8A99AC;
            font-size: 14px;
            line-height: 1.7;
        }

        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: #8A99AC;
            font-size: 14px;
            padding: 4px 0;
            transition: color .2s ease;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(230, 237, 247, 0.5);
        }

        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ---------- Stats ---------- */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
        }

        .stat-item {
            background: #fff;
            border-radius: 16px;
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .stat-item .num {
            font-size: 32px;
            font-weight: 700;
            color: var(--brand);
            line-height: 1.2;
        }

        .stat-item .label {
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 6px;
        }

        @media (max-width: 640px) {
            .stat-item .num {
                font-size: 24px;
            }
            .stat-item .label {
                font-size: 12px;
            }
        }

        /* ---------- Timeline ---------- */
        .timeline {
            max-width: 720px;
            margin: 0 auto;
            position: relative;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--brand), var(--neon), transparent);
        }

        .timeline-item {
            position: relative;
            padding-left: 56px;
            margin-bottom: 32px;
            background: #fff;
            border-radius: 14px;
            padding-top: 20px;
            padding-right: 24px;
            padding-bottom: 18px;
            box-shadow: var(--shadow-card);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 28px;
            width: 14px;
            height: 14px;
            background: var(--neon);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.25);
        }

        .timeline-item .time {
            font-size: 13px;
            color: var(--brand);
            font-weight: 600;
            margin-bottom: 6px;
        }

        .timeline-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .timeline-item p {
            font-size: 14px;
            color: var(--text-sub);
        }

        @media (max-width: 640px) {
            .timeline-item {
                padding-left: 48px;
                padding-right: 16px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #1E4E8C;
  --primary-light: #2F6FD8;
  --accent: #00E0FF;
  --dark: #0B1524;
  --bg: #F3F6FB;
  --text-main: #1F2A3A;
  --text-secondary: #5A6B80;
  --text-muted: #8A99AC;
  --border: #E4EBF3;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(15,42,78,0.08);
  --shadow-hover: 0 12px 32px rgba(15,42,78,0.14);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: var(--primary-light); transition: color .2s; }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; cursor: pointer; }
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(47,111,216,0.25);
  outline-offset: 2px;
}
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .container { padding: 0 16px; } }

/* Header */
.site-header {
  background: var(--dark);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), rgba(0,224,255,0.3) 60%, transparent);
  pointer-events: none;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 34px; height: 34px;
  background: var(--primary-light);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 19px; font-weight: 700;
  box-shadow: 0 0 12px rgba(47,111,216,0.5);
}
.logo-text { color: #fff; font-size: 17px; font-weight: 700; letter-spacing: .5px; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: center; }
.nav-link {
  color: #E6EDF7;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all .2s;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.06); }
.nav-link.active {
  color: var(--accent);
  background: rgba(0,224,255,0.08);
  box-shadow: 0 2px 8px rgba(0,224,255,0.7);
}
.btn-nav-cta {
  background: var(--accent);
  color: #0B1524;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  transition: all .2s;
  white-space: nowrap;
  margin-left: 8px;
}
.btn-nav-cta:hover { background: #33E8FF; color: #0B1524; transform: translateY(-1px); }
.btn-nav-cta:active { transform: translateY(0); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: all .3s; }

/* Banner */
.page-banner {
  position: relative;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-size: cover;
  background-position: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(11,21,36,0.72);
}
.banner-content { position: relative; z-index: 2; padding: 56px 24px; max-width: 780px; }
.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 16px;
}
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: #fff; }
.banner-content h1 { color: #fff; font-size: clamp(30px, 4vw, 44px); font-weight: 700; line-height: 1.3; margin-bottom: 14px; letter-spacing: 1px; }
.banner-content p { color: rgba(230,237,247,0.88); font-size: 16px; line-height: 1.75; }

/* Notice */
.notice-bar { background: #EAF1F9; border-bottom: 1px solid var(--border); padding: 12px 0; }
.notice-bar .container { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-secondary); }
.notice-icon { font-size: 15px; flex-shrink: 0; }
.notice-bar strong { color: var(--primary); }

/* Section */
.section { padding: 80px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block;
  background: #EAF1F9;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.section-title { font-size: 30px; font-weight: 700; color: var(--text-main); line-height: 1.3; margin-bottom: 14px; }
.section-desc { color: var(--text-secondary); font-size: 16px; line-height: 1.7; }

/* Service Cards */
.service-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .3s;
  display: flex;
  flex-direction: column;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.service-card-media { position: relative; overflow: hidden; }
.service-card-img { width: 100%; height: 170px; object-fit: cover; transition: transform .4s; }
.service-card:hover .service-card-img { transform: scale(1.04); }
.service-card-tag {
  position: absolute;
  top: 14px; left: 14px;
  background: rgba(11,21,36,0.78);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.service-card-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.service-card-title { font-size: 18px; font-weight: 600; color: var(--text-main); line-height: 1.4; margin-bottom: 8px; }
.service-card-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; flex: 1; }
.card-link { font-size: 14px; font-weight: 600; color: var(--primary); transition: color .2s; }
.card-link:hover { color: var(--primary-light); }

/* Process */
.process-section { background: #fff; padding: 80px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 16px; }
.process-item {
  text-align: center;
  padding: 36px 24px;
  border-radius: var(--radius);
  background: var(--bg);
  border: 1px solid transparent;
  transition: all .3s;
}
.process-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--border); }
.process-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 14px rgba(30,78,140,0.25);
}
.process-item:nth-child(even) .process-num { background: var(--accent); color: var(--dark); box-shadow: 0 4px 14px rgba(0,224,255,0.35); }
.process-title { font-size: 17px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.process-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* FAQ */
.faq-section { padding: 80px 0; }
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all .3s;
}
.faq-item:hover { border-color: #C9D6E5; box-shadow: 0 4px 14px rgba(15,42,78,0.06); }
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color .2s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: #EAF1F9;
  color: var(--primary);
  font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: all .3s;
  line-height: 1;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer { padding: 0 24px 22px; color: var(--text-secondary); font-size: 14px; line-height: 1.75; display: none; }
.faq-item.open .faq-answer { display: block; }
.faq-answer p { margin: 0; }

/* CTA */
.cta-section { padding: 60px 0 80px; }
.cta-box {
  background: var(--primary);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  color: #fff;
}
.cta-box h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.cta-box p { color: rgba(255,255,255,0.85); font-size: 15px; margin-bottom: 28px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-block;
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all .2s;
}
.btn-primary:hover { background: var(--accent); color: var(--dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,224,255,0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  display: inline-block;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.55);
  cursor: pointer;
  transition: all .2s;
}
.btn-secondary:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-secondary:active { transform: translateY(0); }

/* Footer */
.site-footer { background: var(--dark); color: #E6EDF7; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo-text { color: #fff; font-size: 20px; font-weight: 700; display: block; margin-bottom: 12px; letter-spacing: .5px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer-col h3 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-muted); font-size: 14px; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 18px 0; }
.footer-bottom .container { padding: 0; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { color: var(--text-muted); font-size: 13px; margin: 0; }

/* Responsive */
@media (max-width: 1024px) {
  .service-card-img { height: 160px; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0; right: 0;
    background: var(--dark);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 20px;
    transform: translateY(-130%);
    transition: transform .3s ease;
    border-bottom: 2px solid rgba(0,224,255,0.5);
    box-shadow: 0 16px 32px rgba(0,0,0,0.3);
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav .nav-link { padding: 12px 16px; font-size: 15px; }
  .main-nav .btn-nav-cta { margin: 8px 0 0; text-align: center; padding: 12px 20px; }
  .page-banner { min-height: 280px; }
  .banner-content { padding: 44px 16px; }
  .banner-content h1 { font-size: 30px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .process-section { padding: 56px 0; }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .faq-section { padding: 56px 0; }
  .cta-section { padding: 40px 0 56px; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-actions { flex-direction: column; align-items: center; }
  .btn-primary, .btn-secondary { width: 100%; max-width: 280px; text-align: center; }
  .footer-bottom .container { flex-direction: column; gap: 6px; }
}