/* roulang page: index */
:root {
  --primary: #2f6fed;
  --primary-dark: #1e56c8;
  --primary-light: #eef4ff;
  --accent: #ff9a8b;
  --accent-light: #fff0ed;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 40px -12px rgba(20, 45, 110, 0.15);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text-main); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: var(--primary); transition: color .2s ease; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
.container-site { max-width: 80rem; margin: 0 auto; padding: 0 1rem; }
@media (min-width: 640px) { .container-site { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container-site { padding: 0 2rem; } }
.section { padding: 4rem 0; }
@media (min-width: 1024px) { .section { padding: 6rem 0; } }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em; }
.badge-blue { background: var(--primary-light); color: var(--primary); }
.badge-accent { background: var(--accent-light); color: #d4634f; }
.badge-white { background: rgba(255,255,255,0.15); color: #fff; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--primary); color: #fff; padding: 13px 30px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; box-shadow: 0 4px 14px rgba(47,111,237,0.25); transition: all .25s ease; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(47,111,237,0.3); }
.btn-primary:focus-visible, .btn-secondary:focus-visible, .header-cta:focus-visible { outline: 3px solid rgba(47,111,237,0.4); outline-offset: 2px; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(47,111,237,0.25); }
.btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: #fff; color: var(--text-main); border: 1px solid var(--border); padding: 12px 28px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; transition: all .25s ease; }
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn-secondary:active { transform: translateY(0); }
.btn-white { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: #fff; color: #0f2a6b; padding: 13px 30px; border-radius: 999px; font-weight: 700; font-size: 0.95rem; box-shadow: 0 4px 18px rgba(0,0,0,0.15); transition: all .25s ease; }
.btn-white:hover { background: #f1f5f9; color: #0f2a6b; transform: translateY(-2px); }
.btn-light { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: rgba(255,255,255,0.1); color: #fff; border: 1px solid rgba(255,255,255,0.35); padding: 12px 28px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; backdrop-filter: blur(8px); transition: all .25s ease; }
.btn-light:hover { background: rgba(255,255,255,0.2); color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-block { width: 100%; }
.link-more { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.95rem; }
.link-more:hover { gap: 10px; }
.link-more .arrow { transition: transform .2s ease; }
.link-more:hover .arrow { transform: translateX(3px); }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.92); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid rgba(226,232,240,0.8); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; flex-wrap: wrap; padding-top: 0.5rem; padding-bottom: 0.5rem; }
@media (min-width: 1024px) { .header-inner { flex-wrap: nowrap; padding-top: 0; padding-bottom: 0; min-height: 72px; } }
.logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: var(--text-main); letter-spacing: -0.01em; }
.logo:hover { color: var(--primary); }
.logo-mark { width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, var(--primary) 0%, #7aa5ff 60%, var(--accent) 130%); display: inline-flex; align-items: center; justify-content: center; color: #fff; box-shadow: 0 4px 12px rgba(47,111,237,0.25); flex-shrink: 0; }
.nav-tabs { display: flex; align-items: center; gap: 2px; background: #f1f5f9; border-radius: 999px; padding: 4px; overflow-x: auto; scrollbar-width: none; order: 3; width: 100%; }
.nav-tabs::-webkit-scrollbar { display: none; }
@media (min-width: 1024px) { .nav-tabs { order: 0; width: auto; margin: 0 auto; } }
.nav-chip { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 999px; font-size: 0.9rem; font-weight: 500; color: var(--text-muted); white-space: nowrap; transition: all .2s ease; flex-shrink: 0; }
.nav-chip:hover { color: var(--primary); background: rgba(47,111,237,0.07); }
.nav-chip.active { background: #fff; color: var(--primary); font-weight: 600; box-shadow: 0 1px 4px rgba(15,23,42,0.08); }
.nav-chip.active::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.header-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; padding: 10px 20px; border-radius: 999px; font-weight: 600; font-size: 0.88rem; box-shadow: 0 4px 10px rgba(47,111,237,0.2); transition: all .25s ease; white-space: nowrap; }
.header-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 18px rgba(47,111,237,0.3); }
@media (max-width: 374px) { .header-cta span { display: none; } .header-cta { padding: 10px 14px; } }
.hero-section { position: relative; overflow: hidden; background: linear-gradient(140deg, #0b1c4a 0%, #16367e 45%, #1e4fa0 80%, #245aa8 100%); padding: 5rem 0 4.5rem; }
@media (min-width: 1024px) { .hero-section { padding: 7rem 0 6rem; } }
.hero-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.jpg') center / cover no-repeat; opacity: 0.12; mix-blend-mode: luminosity; }
.hero-section::after { content: ''; position: absolute; width: 480px; height: 480px; border-radius: 50%; background: radial-gradient(closest-side, rgba(255,154,139,0.35), transparent); top: -160px; right: -80px; pointer-events: none; }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }
@media (min-width: 1024px) { .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 4rem; } }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); color: #e2e8f0; padding: 6px 16px; border-radius: 999px; font-size: 0.85rem; font-weight: 500; margin-bottom: 1.5rem; backdrop-filter: blur(8px); }
.hero-title { font-size: 2rem; line-height: 1.2; font-weight: 800; color: #fff; letter-spacing: -0.01em; max-width: 620px; margin-bottom: 1.25rem; }
@media (min-width: 768px) { .hero-title { font-size: 2.6rem; } }
@media (min-width: 1024px) { .hero-title { font-size: 3rem; } }
.hero-subtitle { font-size: 1.05rem; line-height: 1.6; color: rgba(226,232,240,0.9); max-width: 480px; margin-bottom: 2rem; }
@media (min-width: 768px) { .hero-subtitle { font-size: 1.15rem; } }
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.2rem; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-top: 2rem; }
.hero-trust span { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; color: rgba(226,232,240,0.85); }
.hero-trust span::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.stats-card { background: rgba(255,255,255,0.97); border-radius: 18px; padding: 1.5rem 1.4rem; box-shadow: 0 8px 30px rgba(0,0,0,0.2); transition: transform .25s ease, box-shadow .25s ease; }
.stats-card:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(0,0,0,0.25); }
.stats-num { font-size: 1.9rem; font-weight: 800; color: #0f2a6b; line-height: 1.2; letter-spacing: -0.02em; }
@media (min-width: 768px) { .stats-num { font-size: 2.2rem; } }
.stats-label { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }
.stats-trend { display: inline-flex; align-items: center; gap: 4px; font-size: 0.78rem; font-weight: 600; margin-top: 8px; padding: 3px 10px; border-radius: 999px; }
.stats-trend.up { background: #e8f8ef; color: #16a34a; }
.stats-trend.down { background: #fef2f2; color: #dc2626; }
.stats-note { font-size: 0.75rem; color: rgba(255,255,255,0.55); margin-top: 1rem; text-align: right; }
.section-header { max-width: 640px; margin-bottom: 3rem; }
.section-header h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.3; margin: 0.75rem 0 0.75rem; color: var(--text-main); letter-spacing: -0.01em; }
@media (min-width: 768px) { .section-header h2 { font-size: 2.25rem; } }
.section-header p { font-size: 1rem; color: var(--text-muted); max-width: 560px; }
.section-header-center { max-width: 680px; margin: 0 auto 3rem; text-align: center; }
.section-header-center h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.3; margin: 0.75rem 0 0.75rem; color: var(--text-main); }
@media (min-width: 768px) { .section-header-center h2 { font-size: 2.25rem; } }
.section-header-center p { font-size: 1rem; color: var(--text-muted); }
.services-backdrop { background: linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #f8fafc 100%); }
.services-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 1024px) { .services-grid { grid-template-columns: 0.85fr 1.15fr; gap: 3.5rem; } }
.services-intro .intro-img { width: 100%; height: 240px; object-fit: cover; border-radius: 20px; box-shadow: var(--shadow-md); margin-bottom: 1.75rem; }
.services-intro h3 { font-size: 1.4rem; font-weight: 700; margin-top: 0.25rem; margin-bottom: 0.75rem; }
.services-intro > p { color: var(--text-muted); margin-bottom: 1.25rem; }
.intro-list { list-style: none; padding: 0; margin-bottom: 1.75rem; display: flex; flex-direction: column; gap: 0.8rem; }
.intro-list li { display: flex; align-items: center; gap: 10px; color: var(--text-muted); font-size: 0.95rem; }
.intro-list li::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.services-cards { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px) { .services-cards { grid-template-columns: repeat(2, 1fr); } }
.service-card { background: #fff; border: 1px solid #eef1f5; border-radius: 20px; padding: 1.5rem; box-shadow: var(--shadow-sm); transition: all .3s ease; display: flex; flex-direction: column; }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #e2e8f0; }
.service-card .card-img { width: 100%; height: 150px; object-fit: cover; border-radius: 14px; margin-bottom: 1.1rem; }
.service-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 0.5rem; display: flex; align-items: center; gap: 10px; }
.service-card p { font-size: 0.93rem; color: var(--text-muted); line-height: 1.6; flex: 1; }
.service-card .card-link { margin-top: 1rem; font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 5px; }
.service-icon { width: 42px; height: 42px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.icon-blue { background: #eef4ff; color: var(--primary); }
.icon-accent { background: var(--accent-light); color: #d4634f; }
.compare-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-bottom: 3rem; }
@media (min-width: 1024px) { .compare-grid { grid-template-columns: 1fr 1fr; } }
.compare-card { position: relative; border-radius: 22px; padding: 2rem; border: 1px solid var(--border); background: #fff; box-shadow: var(--shadow-sm); }
.compare-card.old { background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%); }
.compare-card.new { border: 2px solid var(--primary); background: linear-gradient(180deg, #f8faff 0%, #fff 100%); box-shadow: 0 8px 30px rgba(47,111,237,0.1); }
.compare-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.2rem; display: flex; align-items: center; gap: 10px; }
.compare-card.old h3 { color: var(--text-muted); }
.compare-row { display: grid; grid-template-columns: 88px 1fr; gap: 0.75rem; padding: 0.85rem 0; border-bottom: 1px solid #eef2f7; align-items: start; }
.compare-row:last-child { border-bottom: none; }
.compare-row .attr { font-weight: 600; font-size: 0.88rem; color: var(--text-muted); padding-top: 2px; }
.compare-card.old .compare-row .val { color: var(--text-light); font-size: 0.92rem; }
.compare-card.new .compare-row .val { color: var(--text-main); font-size: 0.92rem; font-weight: 500; }
.badge-recommend { position: absolute; top: 18px; right: 18px; background: linear-gradient(135deg, var(--primary), #5b8dff); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 5px 14px; border-radius: 999px; box-shadow: 0 4px 12px rgba(47,111,237,0.3); }
.compare-data-strip { background: #fff; border-radius: 18px; border: 1px solid #eef1f5; padding: 1.8rem 2rem; display: grid; grid-template-columns: 1fr; gap: 1.6rem; box-shadow: var(--shadow-sm); }
@media (min-width: 768px) { .compare-data-strip { grid-template-columns: repeat(3, 1fr); } }
.strip-item { display: flex; flex-direction: column; gap: 8px; }
.strip-label { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; }
.strip-bar { height: 8px; background: #eef2f7; border-radius: 999px; overflow: hidden; }
.strip-bar span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--primary), #6da0ff); }
.strip-value { font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.data-footnote { font-size: 0.78rem; color: var(--text-light); margin-top: 1.5rem; text-align: center; }
.faq-inner { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 1024px) { .faq-inner { grid-template-columns: 0.7fr 1.3fr; gap: 4rem; } }
.faq-left h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.3; margin: 0.75rem 0 0.75rem; }
@media (min-width: 768px) { .faq-left h2 { font-size: 2rem; } }
.faq-left p { color: var(--text-muted); margin-bottom: 1.75rem; }
.faq-list { display: flex; flex-direction: column; gap: 1rem; }
.faq-item { background: #fff; border: 1px solid #eef1f5; border-radius: 16px; box-shadow: var(--shadow-sm); overflow: hidden; transition: all .25s ease; }
.faq-item[open] { border-color: rgba(47,111,237,0.35); background: #f8fbff; }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.2rem 1.4rem; cursor: pointer; list-style: none; font-weight: 600; font-size: 1rem; color: var(--text-main); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-icon { width: 28px; height: 28px; border-radius: 50%; background: #f1f5f9; display: inline-flex; align-items: center; justify-content: center; color: var(--text-muted); flex-shrink: 0; transition: all .3s ease; }
.faq-item[open] .faq-icon { transform: rotate(180deg); background: var(--primary-light); color: var(--primary); }
.faq-answer { padding: 0 1.4rem 1.3rem; font-size: 0.95rem; color: var(--text-muted); line-height: 1.75; }
.faq-answer p { max-width: 600px; }
.contact-section { position: relative; }
.contact-panel { position: relative; overflow: hidden; background: linear-gradient(135deg, #0e2b6b 0%, #1a47a5 60%, #2d5fd0 100%); border-radius: 28px; display: grid; grid-template-columns: 1fr; gap: 2rem; padding: 2.5rem 2rem; box-shadow: 0 24px 50px rgba(15, 40, 100, 0.25); }
@media (min-width: 768px) { .contact-panel { grid-template-columns: 1fr 1fr; padding: 3.5rem 3rem; gap: 3.5rem; } }
.contact-panel::before { content: ''; position: absolute; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(closest-side, rgba(255,154,139,0.4), transparent); bottom: -100px; left: -60px; pointer-events: none; }
.contact-panel::after { content: ''; position: absolute; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(closest-side, rgba(255,255,255,0.12), transparent); top: -80px; right: -40px; pointer-events: none; }
.contact-left { position: relative; z-index: 2; color: #fff; display: flex; flex-direction: column; }
.contact-left h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.3; margin: 0.9rem 0 0.75rem; color: #fff; }
@media (min-width: 768px) { .contact-left h2 { font-size: 2.1rem; } }
.contact-left > p { color: rgba(255,255,255,0.85); max-width: 360px; margin-bottom: 2rem; }
.contact-steps { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 1.1rem; }
.contact-steps li { display: flex; align-items: center; gap: 14px; color: rgba(255,255,255,0.95); font-weight: 500; font-size: 0.98rem; }
.contact-steps li span { width: 30px; height: 30px; border-radius: 50%; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); display: inline-flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.contact-form-card { position: relative; z-index: 2; background: #fff; border-radius: 20px; padding: 2rem; box-shadow: 0 20px 40px rgba(0,0,0,0.18); }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: 0.86rem; font-weight: 600; color: var(--text-main); margin-bottom: 6px; }
.form-control { width: 100%; background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 12px; padding: 11px 14px; font-size: 0.95rem; color: var(--text-main); outline: none; transition: all .2s ease; }
.form-control:focus { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,111,237,0.15); }
.form-control::placeholder { color: var(--text-light); }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2394a3b8' d='M6 8L0 0h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-privacy { font-size: 0.78rem; color: var(--text-light); text-align: center; margin-top: 1rem; }
.news-section { background: #fff; border-top: 1px solid #f1f5f9; border-bottom: 1px solid #f1f5f9; }
.news-header { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 2.5rem; }
.news-header h2 { font-size: 1.75rem; font-weight: 700; line-height: 1.3; margin-top: 0.5rem; }
@media (min-width: 768px) { .news-header h2 { font-size: 2rem; } }
.news-list { display: flex; flex-direction: column; }
.news-item { display: flex; align-items: center; gap: 1.2rem; padding: 1.1rem 0; border-bottom: 1px solid #f1f5f9; transition: background .2s ease; }
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: #fafcff; }
.news-date { font-size: 0.82rem; color: var(--text-light); font-variant-numeric: tabular-nums; min-width: 52px; font-weight: 500; }
.news-item a { flex: 1; font-weight: 500; color: var(--text-main); font-size: 1.02rem; transition: color .2s ease; }
.news-item a:hover { color: var(--primary); }
.news-tag { display: inline-flex; align-items: center; padding: 3px 12px; background: #f1f5f9; color: var(--text-muted); border-radius: 999px; font-size: 0.78rem; font-weight: 500; }
.site-footer { background: #0f172a; color: #94a3b8; }
.footer-top { display: grid; grid-template-columns: 1fr; gap: 2.5rem; padding-top: 3.5rem; padding-bottom: 2.5rem; }
@media (min-width: 768px) { .footer-top { grid-template-columns: 1.2fr 1fr; gap: 3rem; } }
.footer-brand .logo { color: #fff; margin-bottom: 1rem; }
.footer-brand p { font-size: 0.92rem; color: #94a3b8; max-width: 340px; line-height: 1.7; margin-top: 0.75rem; }
.footer-col h4 { color: #e2e8f0; font-size: 0.95rem; font-weight: 600; margin-bottom: 1rem; }
.footer-col a { display: block; color: #94a3b8; font-size: 0.9rem; padding: 5px 0; transition: color .2s ease; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 1.4rem 0; text-align: center; font-size: 0.85rem; color: #64748b; }
.footer-bottom .container-site { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px 14px; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }
@media (max-width: 767px) { .footer-top { grid-template-columns: 1fr; } }

/* roulang page: category1 */
:root {
            --primary: #2f6fed;
            --primary-dark: #1e56c8;
            --primary-light: #eef4ff;
            --accent: #ff9a8b;
            --accent-light: #fff0ed;
            --bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 40px -12px rgba(20, 45, 110, 0.15);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: var(--font-sans); background: var(--bg); color: var(--text-main); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        a { text-decoration: none; color: var(--primary); transition: color .2s ease; }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; display: block; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input, select, textarea { font-family: inherit; font-size: 1rem; }
        .container-site { max-width: 80rem; margin: 0 auto; padding: 0 1rem; }
        @media (min-width: 640px) { .container-site { padding: 0 1.5rem; } }
        @media (min-width: 1024px) { .container-site { padding: 0 2rem; } }
        .section { padding: 4rem 0; }
        @media (min-width: 768px) { .section { padding: 6rem 0; } }
        .badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em; }
        .badge-blue { background: var(--primary-light); color: var(--primary); }
        .badge-accent { background: var(--accent-light); color: #d4634f; }
        .badge-white { background: rgba(255, 255, 255, 0.15); color: #fff; }
        .btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--primary); color: #fff; padding: 13px 30px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; box-shadow: 0 4px 14px rgba(47, 111, 237, 0.25); transition: all .25s ease; }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(47, 111, 237, 0.3); }
        .btn-primary:focus-visible, .btn-secondary:focus-visible, .header-cta:focus-visible, .btn-white:focus-visible, .btn-light:focus-visible { outline: 3px solid rgba(47, 111, 237, 0.4); outline-offset: 2px; }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(47, 111, 237, 0.25); }
        .btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: #fff; color: var(--text-main); border: 1px solid var(--border); padding: 12px 28px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; transition: all .25s ease; }
        .btn-secondary:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .btn-secondary:active { transform: translateY(0); }
        .btn-white { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: #fff; color: #0f2a6b; padding: 13px 30px; border-radius: 999px; font-weight: 700; font-size: 0.95rem; box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15); transition: all .25s ease; }
        .btn-white:hover { background: #f1f5f9; color: #0f2a6b; transform: translateY(-2px); }
        .btn-light { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: rgba(255, 255, 255, 0.1); color: #fff; border: 1px solid rgba(255, 255, 255, 0.35); padding: 12px 28px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; backdrop-filter: blur(8px); transition: all .25s ease; }
        .btn-light:hover { background: rgba(255, 255, 255, 0.2); color: #fff; border-color: rgba(255, 255, 255, 0.6); }
        .btn-block { width: 100%; }
        .site-header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid rgba(226, 232, 240, 0.8); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; flex-wrap: wrap; padding-top: 0.5rem; padding-bottom: 0.5rem; }
        @media (min-width: 1024px) { .header-inner { flex-wrap: nowrap; padding-top: 0; padding-bottom: 0; min-height: 72px; } }
        .logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: var(--text-main); letter-spacing: -0.01em; white-space: nowrap; }
        .logo:hover { color: var(--primary); }
        .logo-mark { width: 38px; height: 38px; border-radius: 12px; background: linear-gradient(135deg, var(--primary) 0%, #7aa5ff 60%, var(--accent) 130%); display: inline-flex; align-items: center; justify-content: center; color: #fff; box-shadow: 0 4px 12px rgba(47, 111, 237, 0.25); flex-shrink: 0; }
        .nav-tabs { display: flex; align-items: center; gap: 2px; background: #f1f5f9; border-radius: 999px; padding: 4px; overflow-x: auto; scrollbar-width: none; order: 3; width: 100%; }
        .nav-tabs::-webkit-scrollbar { display: none; }
        @media (min-width: 1024px) { .nav-tabs { order: 0; width: auto; margin: 0 auto; } }
        .nav-chip { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 999px; font-size: 0.9rem; font-weight: 500; color: var(--text-muted); white-space: nowrap; transition: all .2s ease; flex-shrink: 0; }
        .nav-chip:hover { color: var(--primary); background: rgba(47, 111, 237, 0.07); }
        .nav-chip.active { background: #fff; color: var(--primary); font-weight: 600; box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08); }
        .nav-chip.active::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
        .header-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; padding: 10px 20px; border-radius: 999px; font-weight: 600; font-size: 0.88rem; box-shadow: 0 4px 10px rgba(47, 111, 237, 0.2); transition: all .25s ease; white-space: nowrap; }
        .header-cta:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 18px rgba(47, 111, 237, 0.3); }
        .header-cta span { display: none; }
        .header-cta { padding: 10px 14px; }
        @media (min-width: 640px) { .header-cta span { display: inline; } .header-cta { padding: 10px 20px; } }

        /* ===== 分类页特有样式 ===== */
        .category-header { position: relative; padding: 3.5rem 0 2.5rem; overflow: hidden; background: linear-gradient(140deg, #f0f5ff 0%, #f8fafc 45%, #fff5f3 100%); }
        .category-header::before { content: ''; position: absolute; inset: 0; background-image: radial-gradient(circle at 1px 1px, rgba(47, 111, 237, 0.08) 1px, transparent 0); background-size: 22px 22px; pointer-events: none; }
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-light); margin-bottom: 1.25rem; flex-wrap: wrap; }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: #cbd5e1; }
        .category-title { font-size: 2rem; font-weight: 800; line-height: 1.2; color: var(--text-main); letter-spacing: -0.02em; }
        @media (min-width: 768px) { .category-title { font-size: 3rem; } }
        .category-desc { font-size: 1rem; color: var(--text-muted); line-height: 1.7; margin-top: 1rem; max-width: 38rem; }
        @media (min-width: 768px) { .category-desc { font-size: 1.1rem; } }
        .header-stat { display: flex; align-items: center; gap: 12px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.25rem 1.5rem; box-shadow: var(--shadow-sm); }
        .header-stat .stat-num { font-size: 1.6rem; font-weight: 800; color: var(--primary); line-height: 1; }
        .header-stat .stat-label { font-size: 0.85rem; color: var(--text-muted); }

        .filter-section { padding: 1.5rem 0 0.5rem; }
        .filter-tabs { display: flex; align-items: center; gap: 4px; background: #f1f5f9; border-radius: 999px; padding: 4px; overflow-x: auto; scrollbar-width: none; width: max-content; max-width: 100%; }
        .filter-tabs::-webkit-scrollbar { display: none; }
        .filter-chip { display: inline-flex; align-items: center; gap: 6px; padding: 7px 16px; border-radius: 999px; font-size: 0.85rem; font-weight: 500; color: var(--text-muted); white-space: nowrap; transition: all .2s ease; }
        .filter-chip:hover { color: var(--primary); background: rgba(47, 111, 237, 0.07); }
        .filter-chip.active { background: #fff; color: var(--primary); font-weight: 600; box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08); }

        .content-section { padding: 2.5rem 0 4rem; }
        .featured-card { display: grid; grid-template-columns: 1fr; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow .3s ease, transform .3s ease; }
        .featured-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        @media (min-width: 768px) { .featured-card { grid-template-columns: 5fr 6fr; } }
        .featured-img { overflow: hidden; position: relative; min-height: 220px; }
        .featured-img img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; transition: transform .4s ease; }
        .featured-card:hover .featured-img img { transform: scale(1.04); }
        .featured-body { padding: 1.75rem; display: flex; flex-direction: column; justify-content: center; }
        @media (min-width: 768px) { .featured-body { padding: 2.25rem; } }
        .featured-body .item-title { font-size: 1.4rem; font-weight: 700; line-height: 1.35; color: var(--text-main); margin: 0.75rem 0 0.65rem; }
        @media (min-width: 768px) { .featured-body .item-title { font-size: 1.6rem; } }
        .featured-body .item-excerpt { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 1rem; }
        .item-meta { display: flex; align-items: center; gap: 14px; font-size: 0.82rem; color: var(--text-light); margin-bottom: 1.1rem; flex-wrap: wrap; }
        .list-card { display: flex; align-items: center; gap: 1rem; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1rem; transition: box-shadow .3s ease, transform .2s ease; }
        .list-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: rgba(47, 111, 237, 0.2); }
        .list-thumb { width: 96px; height: 72px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; position: relative; }
        .list-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
        .list-card:hover .list-thumb img { transform: scale(1.06); }
        .list-body { flex: 1; min-width: 0; }
        .list-body .item-title { font-size: 1rem; font-weight: 600; color: var(--text-main); line-height: 1.4; margin-bottom: 0.3rem; transition: color .2s ease; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        @media (min-width: 640px) { .list-body .item-title { font-size: 1.08rem; } }
        .list-card:hover .list-body .item-title { color: var(--primary); }
        .list-body .item-excerpt { font-size: 0.85rem; color: var(--text-muted); line-height: 1.55; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; margin-bottom: 0.25rem; }
        .list-meta { font-size: 0.78rem; color: var(--text-light); display: flex; align-items: center; gap: 10px; }
        .list-wrapper { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
        .link-more { display: inline-flex; align-items: center; gap: 4px; font-size: 0.9rem; font-weight: 600; }
        .link-more .arrow { transition: transform .2s ease; }
        .link-more:hover .arrow { transform: translateX(3px); }

        .quote-band { padding: 3rem 0; }
        .quote-inner { background: rgba(47, 111, 237, 0.05); border: 1px solid rgba(47, 111, 237, 0.1); border-radius: var(--radius-lg); padding: 2rem 2rem; display: flex; flex-direction: column; align-items: center; gap: 1.25rem; text-align: center; position: relative; overflow: hidden; }
        .quote-inner::before { content: ''; position: absolute; width: 180px; height: 180px; right: -40px; top: -40px; background: radial-gradient(circle, rgba(255, 154, 139, 0.25) 0%, transparent 70%); border-radius: 50%; }
        .quote-inner::after { content: ''; position: absolute; width: 120px; height: 120px; left: -30px; bottom: -30px; background: radial-gradient(circle, rgba(47, 111, 237, 0.18) 0%, transparent 70%); border-radius: 50%; }
        .quote-text { font-size: 1.2rem; font-weight: 600; color: var(--text-main); line-height: 1.6; max-width: 46rem; position: relative; z-index: 1; }
        @media (min-width: 768px) { .quote-text { font-size: 1.35rem; } }
        .quote-inner .btn-primary { position: relative; z-index: 1; }

        .faq-section { padding: 4rem 0 5rem; }
        .faq-layout { display: grid; grid-template-columns: 1fr; gap: 2rem; }
        @media (min-width: 992px) { .faq-layout { grid-template-columns: 1fr 1.4fr; gap: 3rem; } }
        .faq-sidebar .section-label { color: var(--primary); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.75rem; }
        .faq-sidebar h2 { font-size: 1.8rem; font-weight: 800; line-height: 1.25; margin-bottom: 1rem; }
        .faq-sidebar p { color: var(--text-muted); margin-bottom: 1.5rem; font-size: 0.95rem; }
        .faq-contact { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.25rem 1.5rem; box-shadow: var(--shadow-sm); display: inline-flex; align-items: center; gap: 12px; }
        .faq-contact .icon-bg { width: 40px; height: 40px; border-radius: 12px; background: var(--accent-light); display: flex; align-items: center; justify-content: center; color: #d4634f; flex-shrink: 0; }
        .faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
        .faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: border-color .25s ease, box-shadow .25s ease; }
        .faq-item.open { border-color: rgba(47, 111, 237, 0.3); box-shadow: var(--shadow-sm); }
        .faq-question { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 1.05rem 1.25rem; cursor: pointer; font-weight: 600; font-size: 0.95rem; color: var(--text-main); transition: color .2s ease; }
        .faq-question:hover { color: var(--primary); }
        .faq-icon { width: 24px; height: 24px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; transition: transform .3s ease, background .3s ease, color .3s ease; flex-shrink: 0; }
        .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s ease; padding: 0 1.25rem; color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }
        .faq-item.open .faq-answer { max-height: 240px; padding: 0 1.25rem 1.05rem; }

        .cta-bar { padding: 0 0 5rem; }
        .cta-inner { position: relative; overflow: hidden; background: linear-gradient(135deg, #0d2a66 0%, #16407e 55%, #1e509a 100%); border-radius: var(--radius-lg); padding: 2.75rem 2rem; text-align: center; }
        .cta-inner::before { content: ''; position: absolute; width: 240px; height: 240px; right: -60px; top: -60px; background: radial-gradient(circle, rgba(255, 154, 139, 0.3) 0%, transparent 70%); border-radius: 50%; }
        .cta-inner::after { content: ''; position: absolute; width: 160px; height: 160px; left: -40px; bottom: -40px; background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%); border-radius: 50%; }
        .cta-inner h3 { font-size: 1.5rem; font-weight: 700; color: #fff; margin-bottom: 0.5rem; position: relative; z-index: 1; }
        .cta-inner p { color: rgba(255, 255, 255, 0.8); margin-bottom: 1.5rem; font-size: 0.95rem; position: relative; z-index: 1; }
        .cta-inner .btn-white { position: relative; z-index: 1; }

        .site-footer { background: #0f172a; color: #94a3b8; padding-top: 3.5rem; margin-top: 2rem; }
        .footer-top { display: grid; grid-template-columns: 1fr; gap: 2.5rem; padding-bottom: 2.5rem; }
        @media (min-width: 768px) { .footer-top { grid-template-columns: 1.5fr 1fr; } }
        .footer-brand .logo { color: #fff; margin-bottom: 1rem; }
        .footer-brand .logo:hover { color: #fff; }
        .footer-brand p { font-size: 0.88rem; line-height: 1.7; color: #94a3b8; max-width: 22rem; }
        .footer-col h4 { color: #e2e8f0; font-size: 1rem; font-weight: 600; margin-bottom: 0.9rem; }
        .footer-col a { display: block; color: #94a3b8; font-size: 0.88rem; padding: 0.35rem 0; transition: color .2s ease, padding-left .2s ease; }
        .footer-col a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 1.5rem 0; font-size: 0.82rem; }
        .footer-bottom .container-site { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: #64748b; }
        .footer-bottom a { color: #64748b; }
        .footer-bottom a:hover { color: #fff; }
        @media (max-width: 520px) {
            .header-inner { gap: 0.35rem; }
            .logo { font-size: 1.15rem; }
            .logo-mark { width: 34px; height: 34px; }
            .nav-chip { padding: 6px 12px; font-size: 0.82rem; }
            .featured-body { padding: 1.25rem; }
            .featured-body .item-title { font-size: 1.15rem; }
            .list-card { padding: 0.75rem; }
            .list-thumb { width: 76px; height: 60px; }
            .list-body .item-excerpt { display: none; }
            .list-meta { display: none; }
            .quote-inner { padding: 1.75rem 1.25rem; }
            .cta-inner { padding: 2rem 1.25rem; }
        }