/* roulang page: index */
:root {
            --primary: #3b82f6;
            --primary-dark: #2563eb;
            --accent: #f59e0b;
            --secondary: #10b981;
            --darkbg: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --border-light: #e2e8f0;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 10px 30px rgba(0,0,0,0.10);
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text-main); background: var(--bg-light); line-height: 1.6; }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .hero-back { background-image: linear-gradient(to right, rgba(15,23,42,0.92), rgba(30,64,175,0.75), rgba(30,58,138,0.85)), url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; background-repeat: no-repeat; }
        .section-badge { display: inline-block; padding: 4px 14px; background: rgba(59,130,246,0.1); color: var(--primary-dark); border-radius: 999px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; }
        .nav-tabs { border-bottom: 1px solid var(--border-light); background: rgba(255,255,255,0.8); backdrop-filter: blur(12px); }
        .nav-link { position: relative; padding: 0.65rem 1.25rem; font-size: 0.95rem; font-weight: 500; color: var(--text-muted); border-radius: 999px; transition: all 0.3s ease; }
        .nav-link i { margin-right: 6px; opacity: 0.7; }
        .nav-link:hover { color: var(--primary-dark); background: rgba(59,130,246,0.08); }
        .nav-link.active { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); box-shadow: 0 4px 14px rgba(59,130,246,0.3); }
        .btn-primary { display: inline-flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff !important; font-weight: 600; padding: 0.8rem 1.8rem; border-radius: 10px; box-shadow: 0 4px 15px rgba(59,130,246,0.3); transition: all 0.3s ease; border: none; cursor: pointer; }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(59,130,246,0.4); }
        .btn-outline { display: inline-flex; align-items: center; justify-content: center; background: transparent; color: var(--text-main) !important; font-weight: 600; padding: 0.7rem 1.6rem; border-radius: 10px; border: 2px solid var(--border-light); transition: all 0.3s ease; }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary-dark) !important; background: rgba(59,130,246,0.05); transform: translateY(-2px); }
        .btn-accent { display: inline-flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #f59e0b, #d97706); color: #fff !important; font-weight: 600; padding: 0.8rem 1.8rem; border-radius: 10px; box-shadow: 0 4px 15px rgba(245,158,11,0.3); transition: all 0.3s ease; border: none; cursor: pointer; }
        .btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(245,158,11,0.4); }
        .feature-card { background: #fff; border-radius: var(--radius-lg); padding: 2rem; box-shadow: var(--shadow-card); transition: all 0.3s ease; border: 1px solid var(--border-light); position: relative; overflow: hidden; }
        .feature-card::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--secondary)); opacity: 0; transition: opacity 0.3s; }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .feature-card:hover::after { opacity: 1; }
        .feature-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; border-radius: 14px; background: rgba(59,130,246,0.1); color: var(--primary-dark); font-size: 1.5rem; margin-bottom: 1.25rem; }
        .image-card { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); transition: transform 0.3s ease, box-shadow 0.3s ease; position: relative; background: #fff; border: 1px solid var(--border-light); }
        .image-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .image-card img { width: 100%; height: 200px; object-fit: cover; }
        .image-card .card-content { padding: 1.5rem; }
        .pill-tag { display: inline-block; padding: 3px 12px; border-radius: 999px; font-size: 0.7rem; font-weight: 600; background: rgba(59,130,246,0.08); color: var(--primary-dark); margin-right: 0.5rem; margin-bottom: 0.4rem; border: 1px solid rgba(59,130,246,0.15); }
        .stat-block { background: linear-gradient(135deg, #1e3a8a, #1e40af); border-radius: var(--radius-lg); padding: 2rem; color: #fff; position: relative; overflow: hidden; }
        .stat-block::before { content: ''; position: absolute; width: 200px; height: 200px; border-radius: 50%; background: rgba(255,255,255,0.06); top: -60px; right: -50px; }
        .stat-number { font-size: 2.6rem; font-weight: 800; line-height: 1.2; }
        .flow-item { position: relative; padding-left: 2.5rem; padding-bottom: 2.5rem; }
        .flow-item::before { content: ''; position: absolute; left: 1rem; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--primary), rgba(59,130,246,0.2)); }
        .flow-item:last-child { padding-bottom: 0; }
        .flow-step { position: absolute; left: -0.1rem; top: -0.2rem; width: 2.2rem; height: 2.2rem; background: #fff; border: 2px solid var(--primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--primary-dark); font-size: 0.9rem; }
        .faq-item { background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-card); padding: 0; overflow: hidden; margin-bottom: 1rem; border: 1px solid var(--border-light); }
        .faq-question { padding: 1.2rem 1.5rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
        .faq-question span { flex: 1; color: var(--text-main); font-size: 1rem; }
        .faq-answer { max-height: 0; overflow: hidden; padding: 0 1.5rem; transition: all 0.4s ease; color: var(--text-muted); border-top: 1px solid transparent; }
        .faq-item.active .faq-answer { max-height: 500px; padding: 1rem 1.5rem; border-top-color: var(--border-light); }
        .faq-item.active .faq-toggle { transform: rotate(45deg); }
        .faq-toggle { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: rgba(59,130,246,0.1); color: var(--primary-dark); font-size: 1.5rem; font-weight: 300; transition: all 0.3s ease; flex-shrink: 0; margin-left: 1rem; }
        .footer { background: #0f172a; color: #94a3b8; }
        .footer-top { border-bottom: 1px solid rgba(255,255,255,0.06); }
        .footer h5 { color: #f1f5f9; font-weight: 600; margin-bottom: 1.2rem; font-size: 1rem; }
        .footer ul { list-style: none; padding: 0; }
        .footer ul li { margin-bottom: 0.6rem; }
        .footer ul li a { transition: color 0.3s; font-size: 0.88rem; opacity: 0.85; }
        .footer ul li a:hover { color: #93c5fd; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); }
        .news-list li { border-bottom: 1px solid var(--border-light); }
        .news-list li:last-child { border-bottom: none; }
        .news-cat { font-size: 0.65rem; background: rgba(59,130,246,0.1); color: var(--primary-dark); padding: 2px 8px; border-radius: 999px; margin-right: 8px; }
        .stat-demo { background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02)); border: 1px solid rgba(255,255,255,0.1); border-radius: 16px; padding: 1rem; }
        .hover-lift { transition: transform 0.3s ease, box-shadow 0.3s ease; }
        .hover-lift:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .no-scrollbar::-webkit-scrollbar { display: none; }
        .no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
        .article-card { display: flex; flex-direction: column; height: 100%; background: #fff; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid var(--border-light); }
        .article-card .article-img { width: 100%; height: 180px; object-fit: cover; }
        .link-offset { text-decoration: none; }
        .menu-link { text-decoration: none; font-weight: 600; font-size: 0.88rem; color: #fff !important; }
        @media (max-width: 1024px) {
            .stat-number { font-size: 2rem; }
            .feature-card { padding: 1.2rem; }
        }
        @media (max-width: 768px) {
            .nav-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
            .nav-inner { display: flex; flex-wrap: nowrap; padding: 0 0.8rem; min-width: max-content; }
            .nav-link { padding: 0.55rem 1.0rem; font-size: 0.85rem; }
            .hero-title { font-size: 1.9rem !important; line-height: 1.3 !important; }
            .hero-sub { font-size: 1rem !important; }
            .image-card .card-content { padding: 1rem; }
            .container { padding: 0 1rem; }
            .stat-block { padding: 1.5rem; }
            .stat-number { font-size: 1.6rem; }
            .section-padding { padding-top: 2.5rem; }
            .section-padding { padding-bottom: 2.5rem; }
        }
        h1, h2, h3, h4, h5, p { cursor: default; }
        a, a:hover { cursor: pointer; }
        :focus-visible { outline: 2px solid #3b82f6; outline-offset: 2px; }

/* roulang page: article */
:root {
  --brand: #0ea5e9;
  --brand-dark: #0284c7;
  --indigo: #6366f1;
  --accent: #f97316;
  --ink: #0b1b2f;
  --body: #33485d;
  --muted: #6b7d90;
  --bg-soft: #f5f9fd;
  --surface: #ffffff;
  --border: #e2e9f2;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-card: 0 10px 30px -12px rgb(2 48 86 / 0.12);
  --shadow-card-hover: 0 22px 45px -18px rgb(2 48 86 / 0.22);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  background: var(--bg-soft);
  color: var(--body);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  cursor: pointer;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.75);
  box-shadow: 0 8px 30px -18px rgb(2 48 86 / 0.14);
}

.brand-mark {
  background: linear-gradient(135deg, #38bdf8 0%, #2563eb 50%, #4f46e5 100%);
  box-shadow: 0 12px 24px -10px rgb(37 99 235 / 0.5);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.05rem;
  border-radius: 0.9rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: #475569;
  transition: background 0.35s ease, color 0.35s ease, transform 0.25s ease, box-shadow 0.35s ease;
  white-space: nowrap;
}

.nav-link i {
  font-size: 0.85rem;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.nav-link:hover {
  background: #eef4fc;
  color: #0f2f4e;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -16px rgb(15 47 78 / 0.35);
}

.nav-link:hover i {
  opacity: 1;
}

.nav-link.active {
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 12px 22px -12px rgb(37 99 235 / 0.6);
  transform: translateY(0);
}

.nav-link.active i {
  opacity: 1;
  color: #e0f2fe;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 1.35rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, #fbbf24, #fb923c);
  color: #7c2d12;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 12px 28px -14px rgb(251 146 60 / 0.65);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 30px -14px rgb(251 146 60 / 0.75);
}

.hamburger-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.9rem;
  height: 2.9rem;
  border-radius: 0.9rem;
  border: 1px solid var(--border);
  background: #fff;
  color: #0f2f4e;
  font-size: 1.2rem;
  transition: background 0.25s ease, color 0.25s ease, border 0.25s ease;
}

.hamburger-btn:hover {
  border-color: #38bdf8;
  color: #0284c7;
  background: #f0f9ff;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border-radius: 0.9rem;
  color: #33485d;
  font-weight: 600;
  transition: all 0.25s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: linear-gradient(135deg, #e0f2fe, #eef2ff);
  color: #0c4a6e;
}

/* Page Banner */
.page-banner {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.page-banner .banner-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(120deg, rgba(2, 23, 41, 0.97) 0%, rgba(3, 66, 92, 0.9) 46%, rgba(29, 78, 216, 0.82) 100%),
    url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
}

.page-banner .banner-shape {
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  top: -150px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.4) 0%, transparent 70%);
  filter: blur(10px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: #cbd5e1;
}

.breadcrumb a {
  color: #7dd3fc;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #ffffff;
}

.breadcrumb i {
  font-size: 0.7rem;
  color: #536d84;
}

.page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #e0f2fe;
  border-radius: 999px;
  padding: 0.42rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  backdrop-filter: blur(8px);
}

.page-kicker i {
  color: #fbbf24;
}

.page-date-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #d9e9f7;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  backdrop-filter: blur(6px);
}

/* Main / Article */
.article-page-main {
  padding: 2.5rem 0 4rem;
}

.article-shell {
  background: rgba(255, 255, 255, 0.93);
  border: 1px solid #eaf1f8;
  border-radius: 1.75rem;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.article-content {
  font-size: 1rem;
  line-height: 1.85;
  color: #2f4258;
}

.article-content > p,
.article-content > div,
.article-content > h1,
.article-content > h2,
.article-content > h3,
.article-content > h4,
.article-content > ul,
.article-content > ol,
.article-content > blockquote,
.article-content > pre,
.article-content > figure,
.article-content > img,
.article-content > table {
  margin-bottom: 1.4rem;
}

.article-content h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: #0b1b2f;
  margin: 2.2rem 0 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid #e4eef6;
  position: relative;
}

.article-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 52px;
  height: 3px;
  border-radius: 4px;
  background: linear-gradient(90deg, #38bdf8, #6366f1);
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #0b1b2f;
  margin: 1.75rem 0 0.85rem;
}

.article-content h4 {
  font-size: 1.08rem;
  font-weight: 700;
  color: #0b1b2f;
  margin: 1.4rem 0 0.7rem;
}

.article-content p {
  margin-bottom: 1.1rem;
}

.article-content ul {
  padding-left: 1.4rem;
  margin-bottom: 1.4rem;
  list-style: none;
}

.article-content ul li {
  position: relative;
  padding-left: 0.7rem;
  margin-bottom: 0.6rem;
}

.article-content ul li::before {
  content: '';
  position: absolute;
  left: -0.8rem;
  top: 0.78rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
}

.article-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.4rem;
  list-style: decimal;
}

.article-content ol li {
  padding-left: 0.4rem;
  margin-bottom: 0.6rem;
}

.article-content a {
  color: #0369a1;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.article-content a:hover {
  color: #f97316;
}

.article-content blockquote {
  border-left: 4px solid #38bdf8;
  background: #f0f9ff;
  padding: 1rem 1.3rem;
  border-radius: 0 1rem 1rem 0;
  color: #33485d;
  margin: 1.5rem 0;
}

.article-content img {
  border-radius: 1.25rem;
  box-shadow: 0 16px 34px -22px rgba(2, 48, 86, 0.4);
  margin: 1.5rem 0;
}

.article-content pre {
  background: #0b1b2f;
  color: #e2e8f0;
  padding: 1.2rem;
  border-radius: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
}

.article-content code {
  background: #eef4fc;
  border: 1px solid #dbe6f0;
  color: #0369a1;
  padding: 0.18rem 0.5rem;
  border-radius: 0.4rem;
  font-size: 0.9em;
}

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.article-content th {
  background: #f0f7fc;
  color: #0f2f4e;
  font-weight: 700;
  padding: 0.8rem 1rem;
  border: 1px solid #e2e9f2;
  text-align: left;
}

.article-content td {
  padding: 0.8rem 1rem;
  border: 1px solid #e5edf5;
}

.article-content .wp-caption,
.article-content figure {
  text-align: center;
}

@media (max-width: 767px) {
  .article-page-main {
    padding-top: 1.25rem;
  }
  .article-content {
    font-size: 0.95rem;
  }
}

.article-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  background: #f0f9ff;
  color: #0284c7;
  border: 1px solid #d5eefc;
  padding: 0.38rem 0.85rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.article-tag:hover {
  background: #0ea5e9;
  color: #fff;
  border-color: #0ea5e9;
}

/* Notice Strip */
.notice-strip {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.97), rgba(255, 255, 255, 0.92)),
    url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  border: 1px solid #e2e9f2;
  box-shadow: var(--shadow-card);
}

.notice-strip-icon {
  background: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
  box-shadow: 0 12px 22px -12px rgba(37, 99, 235, 0.45);
}

/* Directory Cards */
.directory-card {
  background: #fff;
  border: 1px solid #e6ecf4;
  border-radius: 1.5rem;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.2, 0.6, 0.2, 1), box-shadow 0.4s ease, border-color 0.35s ease;
  height: 100%;
}

.directory-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: #b8ddf2;
}

.directory-cover {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

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

.directory-card:hover .directory-cover img {
  transform: scale(1.06);
}

.directory-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(2, 24, 43, 0.72) 0%, rgba(2, 24, 43, 0) 55%);
}

.directory-cover .cover-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
}

/* Steps */
.step-card {
  background: #ffffff;
  border: 1px solid #e6ecf4;
  border-radius: 1.35rem;
  padding: 1.6rem 1.3rem;
  box-shadow: var(--shadow-card);
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: #c7ddec;
}

.step-num {
  width: 2.9rem;
  height: 2.9rem;
  display: grid;
  place-items: center;
  border-radius: 1rem;
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: 0 10px 20px -12px rgb(37 99 235 / 0.7);
}

/* FAQ */
.qa-item {
  background: #fff;
  border: 1px solid #e4eaf1;
  border-radius: 1.2rem;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.25s ease;
}

.qa-item:hover {
  border-color: #b8ddf0;
  box-shadow: 0 12px 24px -16px rgba(2, 48, 86, 0.16);
}

.qa-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  padding: 1.1rem 1.3rem;
  font-weight: 700;
  color: #0b1b2f;
  font-size: 0.98rem;
}

.qa-question::-webkit-details-marker {
  display: none;
}

.qa-question .qa-icon {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: #eef4fc;
  color: #0ea5e9;
  border-radius: 0.7rem;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}

.qa-item[open] .qa-icon {
  transform: rotate(45deg);
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff;
}

.qa-content {
  padding: 0 1.3rem 1.2rem;
  color: #526373;
  font-size: 0.93rem;
  line-height: 1.8;
  border-top: 1px solid #edf3f8;
  margin: 0 1rem 0 1.3rem;
  padding-top: 0.85rem;
  padding-left: 0;
  padding-right: 0;
}

/* CTA */
.cta-zone {
  position: relative;
  overflow: hidden;
  background: linear-gradient(120deg, rgba(3, 25, 47, 0.98), rgba(8, 47, 73, 0.94), rgba(30, 64, 175, 0.92)),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  border-radius: 2rem;
  box-shadow: 0 30px 60px -30px rgba(2, 48, 86, 0.65);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, #fbbf24, #fb923c);
  color: #7c2d12;
  font-weight: 800;
  padding: 0.9rem 2rem;
  border-radius: 1rem;
  font-size: 1rem;
  box-shadow: 0 16px 30px -16px rgba(251, 191, 36, 0.8);
  transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 34px -14px rgba(251, 191, 36, 0.85);
  filter: saturate(1.1);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #e0f2fe;
  color: #0369a1;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.section-eyebrow i {
  color: #0ea5e9;
}

/* Footer */
.footer {
  background: #020a1a;
  color: #94a4b8;
  position: relative;
}

.footer h5 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

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

.footer ul li {
  margin-bottom: 0.55rem;
}

.footer ul li a {
  color: #94a4b8;
  font-size: 0.86rem;
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.footer ul li a:hover {
  color: #38bdf8;
  padding-left: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(6, 18, 38, 0.7);
}

@media (max-width: 639px) {
  .hero-title {
    font-size: 2.1rem !important;
  }
}

/* roulang page: category2 */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #eef2ff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-sub: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius-lg: 1.25rem;
            --radius-md: 0.9rem;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
            --shadow-md: 0 10px 30px -12px rgba(15, 23, 42, .15);
            --shadow-lg: 0 24px 50px -20px rgba(79, 70, 229, .3);
            --transition: all .25s ease;
            --container-max: 80rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-main);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        input,
        summary {
            outline: none;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .section {
            padding: 4.5rem 0;
        }

        .site-header {
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            box-shadow: 0 1px 10px rgba(15, 23, 42, .04);
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            padding: .55rem 1rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: .92rem;
            color: #334155;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-link i {
            font-size: .85rem;
            opacity: .85;
        }

        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: #e0e7ff;
            transform: translateY(-1px);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 18px -8px rgba(79, 70, 229, .7);
        }

        .nav-link:focus-visible,
        .btn:focus-visible,
        .footer a:focus-visible {
            outline: 3px solid rgba(79, 70, 229, .4);
            outline-offset: 3px;
            border-radius: .6rem;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.15rem;
            color: #0f172a;
            letter-spacing: -.01em;
            line-height: 1.2;
        }

        .logo-text i {
            color: var(--primary);
            margin-right: .4rem;
            font-size: 1.1rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .55rem;
            border-radius: 9999px;
            font-weight: 800;
            font-size: .95rem;
            padding: .8rem 1.6rem;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-light {
            background: #fff;
            color: #1e1b4b;
            box-shadow: 0 8px 20px -10px rgba(15, 23, 42, .35);
        }

        .btn-light:hover {
            background: #f8fafc;
            transform: translateY(-2px);
            box-shadow: 0 12px 26px -10px rgba(15, 23, 42, .4);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .55);
            color: #fff;
            background: rgba(255, 255, 255, .08);
            backdrop-filter: blur(4px);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .16);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-brand {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 12px 24px -10px rgba(79, 70, 229, .28);
        }

        .btn-brand:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 16px 30px -10px rgba(79, 70, 229, .4);
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .78rem;
            font-weight: 700;
            letter-spacing: .04em;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .3);
            border-radius: 9999px;
            padding: .35rem .85rem;
            color: #fff;
            backdrop-filter: blur(6px);
        }

        .kicker {
            font-size: .8rem;
            font-weight: 800;
            letter-spacing: .15em;
            text-transform: uppercase;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: var(--primary-light);
            padding: .35rem .9rem;
            border-radius: 9999px;
        }

        .section-title {
            font-size: clamp(1.7rem, 3.2vw, 2.3rem);
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: #0f172a;
            margin-top: .8rem;
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 1rem;
            line-height: 1.8;
            margin-top: .8rem;
        }

        .card-hover {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 1.6rem;
            transition: var(--transition);
            height: 100%;
        }

        .card-hover:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: #c7d2fe;
        }

        .icon-block {
            width: 3.4rem;
            height: 3.4rem;
            border-radius: 1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            background: var(--primary-light);
            color: var(--primary);
            transition: var(--transition);
        }

        .card-hover:hover .icon-block {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .scenario-item {
            display: flex;
            gap: 1rem;
            padding: 1.15rem 1.25rem;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .scenario-item:hover {
            border-color: #a5b4fc;
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .step-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem 1.5rem;
            height: 100%;
            position: relative;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: #c7d2fe;
        }

        .step-num {
            font-size: 2rem;
            font-weight: 900;
            line-height: 1;
            background: linear-gradient(135deg, var(--primary), #818cf8);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            opacity: .95;
        }

        .h-scroll {
            display: flex;
            gap: 1.2rem;
            overflow-x: auto;
            padding-bottom: 1rem;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
        }

        .h-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .h-scroll::-webkit-scrollbar-thumb {
            background: #c7d2fe;
            border-radius: 6px;
        }

        .h-scroll::-webkit-scrollbar-track {
            background: #f1f5f9;
            border-radius: 6px;
        }

        .hot-card {
            min-width: 260px;
            max-width: 280px;
            flex-shrink: 0;
            scroll-snap-align: start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .hot-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: #a5b4fc;
        }

        .hot-card img {
            height: 9.5rem;
            width: 100%;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 0;
            transition: var(--transition);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: #c7d2fe;
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.2rem 1.4rem;
            font-weight: 700;
            color: #1e293b;
            font-size: .98rem;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: .8rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary {
            color: var(--primary-dark);
            background: #f8faff;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: .1rem 1.4rem 1.3rem;
            color: var(--text-sub);
            font-size: .93rem;
            line-height: 1.8;
        }

        .footer {
            background: #0b1222;
            color: #94a3b8;
        }

        .footer h5 {
            color: #f1f5f9;
            font-weight: 700;
            font-size: .98rem;
            margin-bottom: 1.1rem;
        }

        .footer a {
            color: #94a3b8;
            font-size: .88rem;
            line-height: 1.9;
            transition: var(--transition);
        }

        .footer a:hover {
            color: #fff;
            padding-left: 3px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, .16);
            background: rgba(0, 0, 0, .2);
        }

        .mobile-nav {
            display: none;
            border-top: 1px solid var(--border);
            background: #fff;
            padding: 1rem 1.25rem 1.2rem;
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav .nav-link {
            width: 100%;
            margin-bottom: .35rem;
            border: 1px solid transparent;
            justify-content: flex-start;
        }

        .mobile-nav .nav-link.active {
            border-color: #e0e7ff;
        }

        .btn-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-main);
            background: #fff;
            font-size: 1rem;
            transition: var(--transition);
        }

        .btn-icon:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 900;
            line-height: 1.14;
            letter-spacing: -0.03em;
            color: #fff;
            text-shadow: 0 6px 20px rgba(15, 23, 42, .25);
        }

        .hero-desc {
            color: #dbeafe;
            font-size: 1.05rem;
            max-width: 720px;
            line-height: 1.85;
        }

        .hero-stat {
            border-left: 2px solid rgba(255, 255, 255, .35);
            padding-left: 1rem;
        }

        .hero-stat span {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            display: block;
            line-height: 1.3;
        }

        .hero-stat small {
            color: #cbd5e1;
            font-size: .8rem;
            display: block;
            margin-top: .1rem;
        }

        .bg-decorator {
            border-radius: 2rem;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-md);
        }

        .cta-overlay {
            background: linear-gradient(120deg, rgba(30, 27, 75, .95), rgba(79, 70, 229, .85));
        }

        @media (max-width: 1024px) {
            .section {
                padding: 3.8rem 0;
            }
            .logo-text {
                font-size: 1.05rem;
            }
        }

        @media (max-width: 640px) {
            .section {
                padding: 3rem 0;
            }
            .card-hover {
                padding: 1.3rem;
            }
            .hero-stat span {
                font-size: 1.6rem;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .faq-item summary {
                font-size: .93rem;
                padding: 1rem 1.1rem;
            }
            .faq-answer {
                padding: .2rem 1.1rem 1.1rem;
            }
        }

        @media (max-width: 480px) {
            .btn {
                width: 100%;
                padding: .75rem 1rem;
                font-size: .9rem;
            }
            .btn-inline-sm {
                width: auto;
            }
            .hero-title {
                font-size: 2rem;
            }
        }

/* roulang page: category1 */
:root{
  --brand-500:#3282fb;
  --brand-600:#1d63ef;
  --brand-700:#164ddb;
  --ink-900:#0d1526;
  --ink-700:#2b3a55;
  --muted:#64748b;
  --line:#e2e8f2;
  --bg:#f5f8fd;
  --surface:#ffffff;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 10px -4px rgba(16,34,74,.14);
  --shadow:0 8px 28px -12px rgba(16,34,74,.22);
  --shadow-lg:0 24px 56px -24px rgba(16,34,74,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink-900);
  background:var(--bg);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
:focus-visible{outline:3px solid rgba(50,130,251,.45);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;display:grid;place-items:center;font-size:17px;
  box-shadow:0 8px 18px -8px rgba(29,99,239,.8);
}
.logo-text{font-weight:800;font-size:17px;letter-spacing:.2px;color:var(--ink-900);line-height:1.2}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:1.6px;text-transform:uppercase}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:999px;
  font-size:14.5px;color:#41506b;font-weight:500;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.nav-link i{font-size:13px;opacity:.75}
.nav-link:hover{background:#eef4ff;color:var(--brand-700);transform:translateY(-1px)}
.nav-link.active{background:linear-gradient(135deg,var(--brand-500),var(--brand-700));color:#fff;box-shadow:0 10px 20px -12px rgba(29,99,239,.95)}
.nav-link.active i{opacity:1}
.header-cta{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#ff8a3d,#f2600c);
  box-shadow:0 12px 24px -14px rgba(242,96,12,.95);
  transition:transform .22s ease,box-shadow .22s ease;
}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 18px 30px -14px rgba(242,96,12,.95)}
.menu-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink-700);display:grid;place-items:center;font-size:16px;
}
.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-nav.open{display:block}
.mobile-nav .nav-link{display:flex;width:100%;border-radius:12px;margin:6px 0}

/* ---------- hero ---------- */
.hero-banner{
  position:relative;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(10,20,44,.94) 0%,rgba(15,42,102,.86) 46%,rgba(24,64,177,.62) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#fff;padding:76px 0 84px;
}
.hero-banner::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(89,164,255,.45),transparent 68%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  color:#d7e6ff;backdrop-filter:blur(6px);
}
.hero-banner h1{
  font-size:clamp(30px,4vw,46px);line-height:1.24;font-weight:800;margin:22px 0 18px;letter-spacing:-.5px;
}
.hero-banner h1 span{color:#ffce8a}
.hero-lead{font-size:16.5px;color:#cddcf5;max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--brand-400),var(--brand-600));color:#fff;box-shadow:0 16px 32px -16px rgba(24,64,177,.95)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 40px -18px rgba(24,64,177,1)}
.btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-700);box-shadow:var(--shadow-sm)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.hero-stats{display:flex;flex-wrap:wrap;gap:30px}
.hero-stats div strong{display:block;font-size:24px;font-weight:800;color:#fff}
.hero-stats div span{font-size:13px;color:#a9c0e6}
.hero-card{
  background:rgba(255,255,255,.97);border-radius:var(--radius-lg);padding:12px;
  box-shadow:var(--shadow-lg);position:relative;
}
.hero-card img{border-radius:18px;height:280px;object-fit:cover;width:100%}
.hero-card-body{padding:18px 14px 10px}
.hero-card-body h3{font-size:17px;font-weight:700;margin:0 0 8px;color:var(--ink-900)}
.hero-card-body p{font-size:13.5px;color:var(--muted);margin:0}
.hero-badge{
  position:absolute;left:-14px;bottom:38px;background:#fff;border-radius:14px;
  padding:12px 16px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;
}
.hero-badge i{color:#16a34a;font-size:19px}
.hero-badge b{font-size:14px;color:var(--ink-900);display:block}
.hero-badge small{font-size:11.5px;color:var(--muted)}

/* ---------- ticker ---------- */
.ticker{
  background:#fff;border-bottom:1px solid var(--line);
  padding:14px 0;overflow:hidden;
}
.ticker-inner{display:flex;align-items:center;gap:16px}
.ticker-label{
  flex-shrink:0;display:inline-flex;align-items:center;gap:7px;
  background:#fff4ec;color:#e0590a;font-size:13px;font-weight:700;
  padding:6px 14px;border-radius:999px;
}
.ticker-track{display:flex;gap:14px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
.ticker-track::-webkit-scrollbar{display:none}
.chip{
  flex-shrink:0;display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;font-size:13px;color:#41506b;
  background:#f3f7ff;border:1px solid #e3ecfb;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{background:#e6f0ff;color:var(--brand-700);border-color:#c9ddff}
.chip i{color:var(--brand-500);font-size:12px}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section.tight{padding:56px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.tag{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:700;
  letter-spacing:1px;color:var(--brand-700);background:#e8f1ff;
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;margin:0 0 14px;letter-spacing:-.4px}
.section-head p{color:var(--muted);font-size:15.5px;margin:0}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0fb}
.card-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:19px;margin-bottom:16px;
  background:linear-gradient(135deg,#e8f1ff,#d4e6ff);color:var(--brand-700);
}
.card h3{font-size:17.5px;font-weight:700;margin:0 0 10px}
.card p{font-size:14.5px;color:var(--muted);margin:0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* ---------- steps ---------- */
.steps-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow-sm)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;counter-reset:step}
.step{position:relative;padding-top:8px}
.step-num{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));color:#fff;
  font-weight:800;font-size:16px;box-shadow:0 12px 22px -14px rgba(29,99,239,.95);
}
.step h4{font-size:15.5px;font-weight:700;margin:16px 0 8px}
.step p{font-size:13.5px;color:var(--muted);margin:0}
.step::after{
  content:"";position:absolute;top:30px;left:56px;right:-18px;height:2px;
  background:linear-gradient(90deg,#cfe0fb,transparent);
}
.step:last-child::after{display:none}

/* ---------- scenario cards ---------- */
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .26s ease,box-shadow .26s ease;
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.scene-card img{height:174px;width:100%;object-fit:cover}
.scene-body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.scene-body h3{font-size:16.5px;font-weight:700;margin:0 0 10px}
.scene-body p{font-size:14px;color:var(--muted);margin:0 0 16px;flex:1}
.mini-tags{display:flex;flex-wrap:wrap;gap:8px}
.mini-tag{font-size:12px;color:var(--brand-700);background:#eef4ff;border-radius:999px;padding:4px 11px}

/* ---------- checklist ---------- */
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-bottom:1px dashed #e6edf8;font-size:14.5px;color:#3b4a64;
}
.check-list li:last-child{border-bottom:none}
.check-list i{color:#16a34a;margin-top:5px}
.media-block{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center}
.media-block img{border-radius:var(--radius-lg);box-shadow:var(--shadow);width:100%;height:340px;object-fit:cover}
.dark-panel{
  background:linear-gradient(140deg,#0d1526,#16356f 60%,#1c47a8);
  border-radius:var(--radius-lg);color:#fff;padding:44px;position:relative;overflow:hidden;
}
.dark-panel::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(89,164,255,.4),transparent 70%);
}
.dark-panel > *{position:relative;z-index:2}
.dark-panel h3{font-size:22px;font-weight:800;margin:0 0 12px;color:#fff}
.dark-panel p{color:#b9cbe8;font-size:14.5px;margin:0 0 20px}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.metric{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:16px}
.metric b{display:block;font-size:22px;font-weight:800;color:#fff}
.metric span{font-size:12.5px;color:#a9c0e6}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease}
.faq-item[open]{border-color:#c7dcfb;box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:19px 24px;font-size:15.5px;font-weight:600;
  display:flex;align-items:center;gap:14px;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .q-mark{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;display:grid;place-items:center;
  background:#eef4ff;color:var(--brand-700);font-size:12px;font-weight:800;
}
.faq-item summary .arrow{margin-left:auto;color:#98a8c2;font-size:13px;transition:transform .25s ease}
.faq-item[open] summary .arrow{transform:rotate(180deg);color:var(--brand-600)}
.faq-item .faq-body{padding:0 24px 20px 64px;font-size:14.5px;color:var(--muted)}

/* ---------- cta ---------- */
.cta-band{
  background:linear-gradient(120deg,#eaf2ff,#f7fbff 55%,#eef6ff);
  border:1px solid #d8e6fb;border-radius:var(--radius-lg);
  padding:48px;display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin:0 0 14px;line-height:1.32}
.cta-band p{color:var(--muted);font-size:15px;margin:0 0 24px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-side{background:#fff;border:1px solid #dbe7f8;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.cta-side h4{font-size:15px;font-weight:700;margin:0 0 14px}
.cta-side ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.cta-side li{display:flex;gap:10px;font-size:13.5px;color:#4b5b76;align-items:flex-start}
.cta-side i{color:var(--brand-600);margin-top:4px}

/* ---------- footer ---------- */
.footer{background:#0b1222;color:#94a3b8}
.footer-top{border-top:4px solid var(--brand-600)}
.footer h5{font-size:13px;letter-spacing:1.4px;text-transform:uppercase;color:#e2e8f0;margin:0 0 16px;font-weight:700}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.footer ul a{font-size:14px;color:#94a3b8;transition:color .2s ease,padding-left .2s ease}
.footer ul a:hover{color:#fff;padding-left:4px}
.footer-bottom{background:#080e1a;border-top:1px solid #1b2439}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step::after{display:none}
  .media-block{grid-template-columns:1fr;gap:30px}
  .media-block img{height:300px}
  .cta-band{grid-template-columns:1fr;padding:36px}
}
@media (max-width:768px){
  .header-inner{height:64px}
  .section{padding:52px 0}
  .hero-banner{padding:56px 0 62px}
  .hero-card img{height:220px}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps-wrap{padding:24px}
  .dark-panel{padding:30px}
  .metric-row{grid-template-columns:1fr;gap:12px}
  .faq-item .faq-body{padding-left:24px}
  .hero-stats{gap:22px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-banner h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr}
  .hero-badge{left:8px;bottom:12px;padding:9px 13px}
  .hero-card img{height:190px}
  .cta-band{padding:26px 20px}
  .card{padding:22px}
}