/* roulang page: index */
:root {
  --bg-deep: #060D1A;
  --bg-primary: #0B1F3A;
  --bg-light: #11294D;
  --primary: #2DD4BF;
  --secondary: #38BDF8;
  --accent: #F59E0B;
  --text-main: #E2E8F0;
  --text-sub: #94A3B8;
  --text-dim: #64748B;
  --border-glass: rgba(255,255,255,0.08);
  --glass-bg: rgba(255,255,255,0.04);
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
  --max-width: 1200px;
  --section-gap: 96px;
  --transition: all .3s cubic-bezier(.4,0,.2,1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

.site-container { max-width: var(--max-width); margin-inline: auto; padding-inline: 24px; }
.section { padding: var(--section-gap) 0; position: relative; }
.section-label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(45,212,191,0.12); border: 1px solid rgba(45,212,191,0.25);
  color: var(--primary); font-size: 0.8rem; font-weight: 600; letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 20px;
}
.section-title {
  font-size: clamp(1.5rem,2.5vw,2.25rem); font-weight: 700; line-height: 1.3;
  letter-spacing: -0.02em; color: var(--text-main); margin-bottom: 16px;
}
.section-desc { color: var(--text-sub); font-size: 1rem; max-width: 640px; line-height: 1.8; }
.divider { height: 1px; background: linear-gradient(90deg, rgba(255,255,255,0.1), transparent); border: none; margin: 56px 0; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: var(--transition);
  background: rgba(6,13,26,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(6,13,26,0.92);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { width: 34px; height: 34px; flex-shrink: 0; }
.logo-text { font-size: 1.25rem; font-weight: 800; letter-spacing: 0.02em; color: var(--text-main); white-space: nowrap; }
.nav-tabs { display: flex; align-items: center; gap: 6px; flex: 1; justify-content: center; }
.nav-tab {
  padding: 8px 20px; border-radius: 999px;
  font-size: 0.9rem; font-weight: 500; color: var(--text-sub);
  transition: var(--transition); border: 1px solid transparent;
  white-space: nowrap;
}
.nav-tab:hover { color: var(--primary); border-color: rgba(45,212,191,0.3); }
.nav-tab.active {
  background: var(--primary); color: #06201F; font-weight: 700;
  box-shadow: 0 0 20px rgba(45,212,191,0.35);
}
.header-right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.menu-toggle .bar {
  width: 22px; height: 2px; background: var(--text-main); border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open .bar:nth-child(2) { opacity: 0; }
.menu-toggle.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0; z-index: 99;
  background: rgba(6,13,26,0.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass); padding: 20px 24px 32px;
  flex-direction: column; gap: 8px;
  transform: translateY(-16px); opacity: 0; pointer-events: none; transition: var(--transition);
}
.mobile-nav.open { display: flex; transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-link {
  padding: 14px 16px; border-radius: 12px; font-size: 1rem; color: var(--text-sub);
  transition: var(--transition); border: 1px solid transparent;
}
.mobile-link:hover { color: var(--primary); background: rgba(45,212,191,0.06); }
.mobile-link.active { color: var(--primary); border-color: rgba(45,212,191,0.3); background: rgba(45,212,191,0.08); font-weight: 600; }
.mobile-cta { margin-top: 12px; text-align: center; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 999px; font-size: 0.95rem; font-weight: 600;
  transition: var(--transition); line-height: 1.2; border: 1px solid transparent;
}
.btn-sm { padding: 9px 20px; font-size: 0.85rem; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #0EA5A0);
  color: #06201F;
  box-shadow: 0 4px 16px rgba(45,212,191,0.3);
}
.btn-primary:hover { box-shadow: 0 0 24px rgba(45,212,191,0.5); transform: translateY(-1px); }
.btn-primary:active { transform: scale(0.97); }
.btn-ghost {
  background: rgba(255,255,255,0.04); color: var(--text-main);
  border-color: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), #F97316);
  color: #1A1200;
  box-shadow: 0 4px 20px rgba(245,158,11,0.3);
}
.btn-accent:hover { box-shadow: 0 0 28px rgba(245,158,11,0.5); transform: translateY(-1px); }

/* ===== Glass Card ===== */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}
.glass-card:hover { border-color: rgba(45,212,191,0.2); }

/* ===== Hero ===== */
.hero {
  min-height: 80vh; min-height: 600px;
  display: flex; align-items: center;
  position: relative; padding: 120px 0 80px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover; background-position: center center;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(6,13,26,0.65) 0%, rgba(6,13,26,0.35) 40%, rgba(6,13,26,0.75) 75%, var(--bg-deep) 100%);
}
.hero-content { display: flex; align-items: center; justify-content: space-between; gap: 64px; width: 100%; }
.hero-text { max-width: 720px; }
.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800; line-height: 1.15; letter-spacing: -0.02em;
  margin-bottom: 24px; color: var(--text-main);
}
.hero-title .highlight {
  color: var(--primary);
  position: relative;
  display: inline-block;
}
.hero-title .highlight::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 4px; height: 8px;
  background: rgba(45,212,191,0.2); border-radius: 4px; z-index: -1;
}
.hero-subtitle {
  font-size: 1.1rem; color: var(--text-sub); line-height: 1.8;
  margin-bottom: 36px; max-width: 560px;
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-float-card {
  flex-shrink: 0; padding: 32px 28px; width: 280px;
  display: flex; flex-direction: column; gap: 20px;
  position: relative;
}
.hero-float-card::before {
  content: ''; position: absolute; top: -10px; right: -10px; width: 60px; height: 60px;
  background: radial-gradient(circle, rgba(45,212,191,0.25), transparent 70%);
  border-radius: 50%;
}
.float-stat { display: flex; flex-direction: column; }
.float-label { font-size: 0.8rem; color: var(--text-sub); letter-spacing: 1px; margin-bottom: 4px; }
.float-value { font-size: 2.2rem; font-weight: 800; color: var(--primary); font-variant-numeric: tabular-nums; }
.float-unit { font-size: 1rem; color: var(--text-sub); margin-left: 4px; }
.float-divider { height: 1px; background: linear-gradient(90deg, rgba(45,212,191,0.4), transparent); }

/* ===== Pain Points ===== */
.pain-header { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 48px; }
.pain-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.pain-card {
  padding: 32px 28px; position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 14px;
}
.pain-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 40px;
  background: linear-gradient(180deg, var(--primary), transparent); border-radius: 0 3px 3px 0;
}
.pain-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: rgba(45,212,191,0.12); border: 1px solid rgba(45,212,191,0.2);
  display: flex; align-items: center; justify-content: center; color: var(--primary);
  font-size: 1.3rem; margin-bottom: 4px;
}
.pain-text { font-size: 1rem; color: var(--text-main); font-weight: 600; line-height: 1.6; }
.pain-turn { font-size: 0.875rem; color: var(--text-sub); line-height: 1.6; }
.pain-turn strong { color: var(--primary); font-weight: 600; }

/* ===== Solution ===== */
.solution-row { display: flex; gap: 24px; }
.solution-main {
  flex: 0 0 58%;
  background: linear-gradient(135deg, rgba(45,212,191,0.08), rgba(56,189,248,0.04)), var(--glass-bg);
  border: 1px solid rgba(45,212,191,0.25); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column;
  box-shadow: var(--shadow-card); transition: var(--transition);
}
.solution-main:hover { border-color: rgba(45,212,191,0.5); transform: translateY(-4px); }
.solution-side { flex: 1; display: flex; flex-direction: column; gap: 24px; }
.solution-side-card {
  flex: 1; background: var(--glass-bg); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); padding: 28px 24px; overflow: hidden;
  transition: var(--transition); box-shadow: var(--shadow-card);
}
.solution-side-card:hover { border-color: rgba(45,212,191,0.25); transform: translateY(-2px); }
.solution-inner { display: flex; gap: 24px; height: 100%; }
.solution-body { padding: 32px; flex: 1; display: flex; flex-direction: column; }
.solution-main .solution-body { padding: 40px 32px; }
.solution-img { position: relative; overflow: hidden; min-height: 180px; }
.solution-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.solution-main:hover .solution-img img { transform: scale(1.03); }
.solution-side-card .solution-img { height: 120px; border-radius: var(--radius-md) var(--radius-md) 0 0; margin: -28px -24px 20px; }
.solution-img img { width: 100%; height: 100%; object-fit: cover; }
.solution-tag {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  background: rgba(56,189,248,0.15); border: 1px solid rgba(56,189,248,0.3);
  color: var(--secondary); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.5px;
  margin-bottom: 14px; align-self: flex-start;
}
.solution-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 10px; color: var(--text-main); }
.solution-main .solution-title { font-size: 1.5rem; }
.solution-desc { color: var(--text-sub); font-size: 0.9rem; margin-bottom: 18px; line-height: 1.7; }
.solution-feats { list-style: none; margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
.solution-feats li { display: flex; align-items: flex-start; gap: 8px; font-size: 0.875rem; color: var(--text-main); }
.solution-feats li::before {
  content: ''; flex-shrink: 0; width: 14px; height: 14px; margin-top: 4px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%232DD4BF'%3E%3Cpath fill-rule='evenodd' d='M16.7 5.3a1 1 0 010 1.4l-8 8a1 1 0 01-1.4 0l-4-4a1 1 0 111.4-1.4L8 12.6l7.3-7.3a1 1 0 011.4 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-size: contain;
}
.solution-link { margin-top: auto; font-size: 0.9rem; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); }
.solution-link:hover { gap: 10px; }
.solution-side-card .solution-feats li { font-size: 0.8rem; }

/* ===== Stats ===== */
.stats-section { background: linear-gradient(180deg, var(--bg-deep), #081325, var(--bg-deep)); position: relative; }
.stats-section::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse at 20% 50%, rgba(45,212,191,0.08), transparent 60%);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative;
}
.stat-card {
  text-align: center; padding: 44px 24px;
  background: var(--glass-bg); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); transition: var(--transition);
}
.stat-card:hover { border-color: rgba(45,212,191,0.3); transform: translateY(-4px); }
.stat-num {
  font-size: clamp(2rem, 3vw, 2.8rem); font-weight: 800; color: var(--primary);
  font-variant-numeric: tabular-nums; line-height: 1.2; letter-spacing: -0.02em;
}
.stat-label { color: var(--text-sub); font-size: 0.875rem; margin-top: 10px; }
.stat-growth { display: inline-flex; align-items: center; gap: 4px; font-size: 0.8rem; color: var(--primary); margin-top: 8px; font-weight: 600; }

/* ===== Testimonials ===== */
.testi-grid {
  display: grid; grid-template-columns: 0.9fr 1.1fr 0.9fr; gap: 24px; align-items: stretch;
}
.testi-card {
  padding: 36px 32px; display: flex; flex-direction: column; gap: 16px; position: relative;
}
.testi-card.featured { background: rgba(45,212,191,0.07); border-color: rgba(45,212,191,0.25); }
.testi-quote {
  font-size: 3rem; color: rgba(45,212,191,0.3); line-height: 1; font-family: Georgia, serif;
  margin-bottom: -10px;
}
.testi-text { font-size: 0.95rem; color: var(--text-main); line-height: 1.8; flex: 1; }
.testi-meta { display: flex; align-items: center; gap: 12px; }
.testi-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  color: #06201F; font-weight: 700; font-size: 0.9rem;
}
.testi-name { font-size: 0.9rem; font-weight: 600; color: var(--text-main); }
.testi-role { font-size: 0.8rem; color: var(--text-sub); }
.testi-stars { color: var(--accent); font-size: 0.85rem; letter-spacing: 2px; }

/* ===== News / CMS ===== */
.news-section { background: linear-gradient(180deg, var(--bg-deep), #081325); position: relative; }
.news-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 40px; }
.news-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.news-card {
  background: var(--glass-bg); border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: var(--transition); display: flex; flex-direction: column;
}
.news-card:hover { border-color: rgba(45,212,191,0.3); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.news-card-link { padding: 28px 24px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.news-tag {
  align-self: flex-start; padding: 4px 12px; border-radius: 999px;
  background: rgba(56,189,248,0.12); border: 1px solid rgba(56,189,248,0.3);
  color: var(--secondary); font-size: 0.75rem; font-weight: 600;
}
.news-title { font-size: 1.1rem; font-weight: 700; line-height: 1.5; color: var(--text-main); transition: var(--transition); }
.news-card:hover .news-title { color: var(--primary); }
.news-excerpt {
  font-size: 0.875rem; color: var(--text-sub); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card-bottom {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: auto; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.05);
}
.news-date { font-size: 0.8rem; color: var(--text-dim); }
.read-more { font-size: 0.85rem; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; transition: var(--transition); }
.news-card:hover .read-more { gap: 8px; }
.news-empty {
  grid-column: 1 / -1; text-align: center; padding: 60px 24px;
  color: var(--text-sub); background: var(--glass-bg);
  border: 1px dashed rgba(255,255,255,0.15); border-radius: var(--radius-lg);
}

/* ===== FAQ ===== */
.faq-wrap { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid rgba(255,255,255,0.08); }
.faq-item:first-child { border-top: 1px solid rgba(255,255,255,0.08); }
.faq-question { width: 100%; text-align: left; padding: 28px 16px 28px 0; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.faq-q-text { font-size: 1.05rem; font-weight: 600; color: var(--text-main); transition: var(--transition); }
.faq-item:hover .faq-q-text { color: var(--primary); }
.faq-icon { position: relative; width: 20px; height: 20px; flex-shrink: 0; transition: transform .3s ease; }
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; background: var(--primary); border-radius: 2px; transition: var(--transition);
}
.faq-icon::before { width: 18px; height: 2px; top: 9px; left: 1px; }
.faq-icon::after { width: 2px; height: 18px; left: 9px; top: 1px; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease, padding .3s ease; color: var(--text-sub); line-height: 1.8; font-size: 0.95rem; }
.faq-item.active .faq-answer { max-height: 320px; padding: 0 32px 24px 0; }

/* ===== CTA ===== */
.cta-section {
  position: relative; overflow: hidden; padding: 100px 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover; background-position: center;
}
.cta-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,13,26,0.75), rgba(6,13,26,0.9));
}
.cta-content { position: relative; text-align: center; max-width: 640px; margin: 0 auto; }
.cta-title { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 800; margin-bottom: 16px; color: var(--text-main); }
.cta-desc { font-size: 1rem; color: var(--text-sub); margin-bottom: 32px; line-height: 1.8; }

/* ===== Footer ===== */
.site-footer { background: #040B14; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 48px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-text { font-size: 1.2rem; font-weight: 800; color: var(--text-main); }
.footer-brand p { font-size: 0.875rem; color: var(--text-sub); line-height: 1.8; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; color: var(--text-main); margin-bottom: 20px; letter-spacing: 0.5px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a, .footer-col ul li { font-size: 0.875rem; color: var(--text-sub); transition: var(--transition); display: flex; align-items: center; gap: 8px; }
.footer-col ul li a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding: 20px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.8rem; color: var(--text-dim); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .solution-main { flex: 0 0 50%; }
  .hero-content { flex-direction: column; align-items: flex-start; }
  .hero-float-card { width: 100%; max-width: 420px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testi-grid { grid-template-columns: 1fr; }
  .testi-card.featured { order: -1; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .site-container { padding-inline: 16px; }
  .section { --section-gap: 64px; }
  .nav-tabs { display: none; }
  .menu-toggle { display: flex; }
  .header-inner { height: 64px; }
  .mobile-nav.open { display: flex; top: 64px; }
  .pain-grid { grid-template-columns: 1fr; }
  .solution-row { flex-direction: column; }
  .solution-main { flex: auto; }
  .solution-inner { flex-direction: column; }
  .solution-main .solution-body { padding: 28px 24px; }
  .solution-side { flex-direction: row; }
  .solution-side-card { flex: 1; }
  .solution-side-card .solution-img { height: 100px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card { padding: 28px 20px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .hero { padding-top: 100px; }
  .hero-title { font-size: clamp(1.8rem, 8vw, 2.4rem); }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .solution-side { flex-direction: column; }
  .btn { padding: 10px 20px; font-size: 0.85rem; }
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; }
}

/* roulang page: article */
:root {
        --bg-primary: #060D1A;
        --bg-secondary: #0B1F3A;
        --bg-elev: #11294D;
        --accent: #2DD4BF;
        --accent-blue: #38BDF8;
        --warn: #F59E0B;
        --text-main: #E2E8F0;
        --text-sub: #94A3B8;
        --text-weak: #64748B;
        --border-glass: rgba(255,255,255,0.08);
        --glass-bg: rgba(255,255,255,0.04);
        --radius-lg: 20px;
        --radius-sm: 14px;
        --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
        --font-sans: "PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-sans);
        background: var(--bg-primary);
        color: var(--text-main);
        line-height: 1.8;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button { font-family: inherit; cursor: pointer; }
    .site-container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

    .btn-primary {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        background: linear-gradient(135deg, #2DD4BF, #38BDF8);
        color: #060D1A; font-weight: 600; font-size: .9rem;
        padding: 12px 28px; border-radius: 999px; border: none; cursor: pointer;
        transition: all .28s ease; letter-spacing: .01em;
    }
    .btn-primary:hover { box-shadow: 0 0 20px rgba(45,212,191,.55); filter: brightness(1.08); }
    .btn-primary:active { transform: scale(.97); }

    .btn-secondary {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        background: rgba(255,255,255,.04); color: var(--text-main); font-weight: 500; font-size: .9rem;
        padding: 11px 26px; border-radius: 999px; border: 1px solid rgba(255,255,255,.12);
        transition: all .28s ease; cursor: pointer;
    }
    .btn-secondary:hover { border-color: rgba(45,212,191,.5); color: var(--accent); }
    .btn-secondary:active { transform: scale(.97); }

    .btn-amber {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        background: var(--warn); color: #060D1A; font-weight: 700; font-size: .92rem;
        padding: 12px 28px; border-radius: 999px; border: none; cursor: pointer;
        transition: all .28s ease; letter-spacing: .01em;
    }
    .btn-amber:hover { box-shadow: 0 0 24px rgba(245,158,11,.5); filter: brightness(1.08); }
    .btn-amber:active { transform: scale(.97); }

    .section-label {
        display: inline-flex; align-items: center; gap: 6px;
        font-size: .78rem; letter-spacing: .12em; text-transform: uppercase;
        color: var(--accent); font-weight: 600;
        padding: 6px 16px; border-radius: 999px;
        background: rgba(45,212,191,.1); border: 1px solid rgba(45,212,191,.2);
    }

    .glass-card {
        background: var(--glass-bg);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-card);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
    }

    /* ===== Header / Nav ===== */
    .site-header {
        position: sticky; top: 0; z-index: 60;
        background: rgba(6,13,26,.84);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(45,212,191,.09);
    }
    .header-inner {
        height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
    }
    .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
    .brand-icon { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; }
    .brand-text {
        font-size: 1.16rem; font-weight: 800; color: #f8fafc;
        letter-spacing: -.02em; white-space: nowrap;
    }
    .nav-tabs { display: flex; align-items: center; gap: 8px; flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
    .nav-tabs::-webkit-scrollbar { display: none; }
    .nav-tab {
        padding: 8px 18px; border-radius: 999px;
        font-size: .89rem; font-weight: 500; color: var(--text-sub);
        border: 1px solid transparent; white-space: nowrap;
        transition: all .25s ease;
    }
    .nav-tab:hover { color: #e2e8f0; background: rgba(45,212,191,.08); }
    .nav-tab.active {
        color: var(--accent); font-weight: 600;
        background: rgba(45,212,191,.13);
        border-color: rgba(45,212,191,.3);
        box-shadow: 0 0 16px rgba(45,212,191,.1);
    }
    .header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
    .btn-header {
        background: linear-gradient(135deg, rgba(45,212,191,.12), rgba(56,189,248,.08));
        color: var(--accent); border: 1px solid rgba(45,212,191,.35);
        border-radius: 999px; padding: 8px 22px; font-size: .85rem; font-weight: 600;
        transition: all .25s ease; display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-header:hover { box-shadow: 0 0 16px rgba(45,212,191,.3); background: rgba(45,212,191,.18); }
    .mobile-toggle {
        display: none; width: 40px; height: 40px; border-radius: 12px;
        background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
        color: var(--text-main); font-size: 1.1rem; align-items: center; justify-content: center;
    }
    .mobile-nav {
        display: none; padding: 12px 24px 20px; border-top: 1px solid rgba(255,255,255,.06);
        background: rgba(6,13,26,.96);
    }
    .mobile-nav.open { display: block; }
    .mobile-nav a {
        display: block; padding: 12px 10px; border-radius: 12px;
        font-size: .95rem; color: var(--text-sub); transition: all .2s;
        border-bottom: 1px solid rgba(255,255,255,.03);
    }
    .mobile-nav a:hover { color: var(--accent); background: rgba(45,212,191,.06); }
    .mobile-nav a.active { color: var(--accent); font-weight: 600; }
    .mobile-cta { margin-top: 14px; display: block; text-align: center; }

    @media (max-width: 920px) {
        .nav-tabs { display: none; }
        .mobile-toggle { display: inline-flex; }
        .header-inner { height: 64px; }
        .brand-text { font-size: 1.05rem; }
        .btn-header { display: none; }
    }

    /* ===== Article Hero ===== */
    .article-hero {
        position: relative;
        padding: 56px 0 48px;
        background:
            linear-gradient(180deg, rgba(6,13,26,.72) 0%, rgba(6,13,26,.9) 55%, rgba(6,13,26,1) 100%),
            url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        border-bottom: 1px solid rgba(45,212,191,.08);
    }
    .breadcrumb {
        display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
        font-size: .82rem; color: var(--text-weak); margin-bottom: 28px;
    }
    .breadcrumb a { color: var(--text-sub); transition: color .2s; }
    .breadcrumb a:hover { color: var(--accent); }
    .breadcrumb-sep { opacity: .5; }
    .breadcrumb-current {
        color: var(--text-sub); max-width: 420px;
        overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
        display: inline-block; vertical-align: middle;
    }
    .article-head { max-width: 900px; }
    .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-bottom: 18px; }
    .article-cat {
        display: inline-flex; align-items: center; gap: 6px;
        background: rgba(45,212,191,.13); color: var(--accent);
        border: 1px solid rgba(45,212,191,.25);
        font-size: .78rem; font-weight: 600; letter-spacing: .04em;
        padding: 5px 14px; border-radius: 999px;
    }
    .article-date { font-size: .84rem; color: var(--text-weak); display: inline-flex; align-items: center; gap: 6px; }
    .article-head h1 {
        font-size: clamp(1.85rem, 3.8vw, 2.8rem);
        font-weight: 800; line-height: 1.35; letter-spacing: -.02em;
        color: #f8fafc; margin-bottom: 18px; word-break: break-word;
        text-rendering: optimizeLegibility;
    }
    .article-desc {
        font-size: 1rem; line-height: 1.85; color: var(--text-sub);
        max-width: 780px; margin-bottom: 4px;
    }

    /* ===== Article Body ===== */
    .article-section { padding: 56px 0 8px; }
    .article-body {
        max-width: 74rem; margin: 0 auto;
        font-size: 1rem; color: #cbd5e1;
    }
    .article-body p { line-height: 1.95; margin: 1.6em 0; }
    .article-body h2 {
        font-size: 1.7rem; font-weight: 700; color: #f1f5f9;
        margin: 2.6em 0 .85em; padding-bottom: .45em;
        border-bottom: 1px solid rgba(148,163,184,.12); letter-spacing: -.01em;
    }
    .article-body h3 {
        font-size: 1.35rem; font-weight: 700; color: #e2e8f0;
        margin: 2.1em 0 .7em;
    }
    .article-body h4 {
        font-size: 1.12rem; font-weight: 600; color: #e2e8f0;
        margin: 1.7em 0 .55em;
    }
    .article-body img {
        border-radius: 16px; margin: 2.2em auto;
        box-shadow: 0 12px 40px rgba(0,0,0,.45);
    }
    .article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; word-break: break-word; }
    .article-body a:hover { text-decoration-thickness: 2px; }
    .article-body ul, .article-body ol { margin: 1.5em 0; padding-left: 1.6em; display: grid; gap: .55em; }
    .article-body li { line-height: 1.85; }
    .article-body ul li::marker { color: var(--accent); }
    .article-body blockquote {
        border-left: 4px solid var(--accent);
        background: rgba(45,212,191,.06);
        padding: 1.2em 1.6em; margin: 2.2em 0;
        border-radius: 0 12px 12px 0; color: var(--text-sub);
    }
    .article-body blockquote p { margin: .4em 0; }
    .article-body table {
        width: 100%; border-collapse: collapse; margin: 2.2em 0;
        font-size: .92rem; border-radius: 12px; overflow: hidden;
    }
    .article-body th {
        background: rgba(45,212,191,.08); color: #f1f5f9;
        font-weight: 600; text-align: left; padding: .95em 1.1em;
        border: 1px solid rgba(148,163,184,.14);
    }
    .article-body td {
        padding: .9em 1.1em; border: 1px solid rgba(148,163,184,.12);
        color: #cbd5e1; background: rgba(255,255,255,.02);
    }
    .article-body code {
        background: rgba(45,212,191,.1); color: var(--accent);
        padding: .2em .45em; border-radius: 5px; font-size: .88em;
    }
    .article-body pre {
        background: var(--bg-secondary); border: 1px solid rgba(148,163,184,.12);
        border-radius: 14px; padding: 1.3em; overflow-x: auto; margin: 1.8em 0;
    }
    .article-body pre code { background: none; padding: 0; color: #e2e8f0; }

    @media (max-width: 640px) {
        .article-body th:nth-child(3),
        .article-body td:nth-child(3) { display: none; }
        .article-body { font-size: .96rem; }
        .article-body h2 { font-size: 1.4rem; }
        .article-body blockquote { padding: 1em 1.2em; }
    }

    /* ===== Not Found ===== */
    .not-found {
        text-align: center; padding: 90px 24px;
        max-width: 600px; margin: 0 auto;
    }
    .not-found-icon {
        width: 72px; height: 72px; margin: 0 auto 22px;
        border-radius: 50%;
        background: rgba(45,212,191,.1); border: 1px solid rgba(45,212,191,.25);
        display: flex; align-items: center; justify-content: center;
        font-size: 1.7rem; color: var(--accent);
    }
    .not-found h2 { font-size: 1.5rem; font-weight: 700; color: #f1f5f9; margin-bottom: 10px; }
    .not-found p { color: var(--text-sub); margin-bottom: 28px; }

    /* ===== Related Section ===== */
    .related-section { padding: 72px 0 64px; }
    .section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 36px; }
    .section-head h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); font-weight: 700; color: #f1f5f9; letter-spacing: -.01em; }
    .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .post-card {
        background: var(--glass-bg); border: 1px solid var(--border-glass);
        border-radius: 18px; overflow: hidden;
        transition: all .35s ease; display: flex; flex-direction: column;
    }
    .post-card:hover {
        border-color: rgba(45,212,191,.35);
        box-shadow: 0 12px 36px rgba(0,0,0,.45), 0 0 20px rgba(45,212,191,.06);
        transform: translateY(-2px);
    }
    .post-thumb { aspect-ratio: 16/9; overflow: hidden; }
    .post-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
    .post-card:hover .post-thumb img { transform: scale(1.04); }
    .post-content { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
    .post-tag {
        align-self: flex-start;
        background: rgba(45,212,191,.1); color: var(--accent);
        border: 1px solid rgba(45,212,191,.2);
        font-size: .75rem; font-weight: 600; letter-spacing: .04em;
        padding: 4px 12px; border-radius: 999px;
    }
    .post-content h3 { font-size: 1.05rem; font-weight: 700; color: #e2e8f0; line-height: 1.45; }
    .post-content p { font-size: .87rem; color: var(--text-sub); line-height: 1.7; margin: 0; }
    .post-link {
        margin-top: auto; padding-top: 10px;
        font-size: .84rem; font-weight: 600; color: var(--text-sub);
        display: inline-flex; align-items: center; gap: 6px;
        transition: all .25s;
    }
    .post-link:hover { color: var(--accent); }
    .post-link i { transition: transform .25s; }
    .post-link:hover i { transform: translateX(4px); }
    .related-back { text-align: center; margin-top: 44px; }
    .back-btn { display: inline-flex; align-items: center; gap: 8px; }

    @media (max-width: 900px) {
        .related-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
        .section-head { flex-direction: column; align-items: flex-start; }
    }

    /* ===== CTA ===== */
    .article-cta { padding: 16px 0 80px; }
    .cta-inner {
        display: flex; align-items: center; justify-content: space-between; gap: 28px;
        background: linear-gradient(135deg, rgba(11,31,58,.72), rgba(6,13,26,.9));
        border: 1px solid rgba(45,212,191,.14); border-radius: 22px;
        padding: 42px 48px; position: relative; overflow: hidden;
    }
    .cta-inner::before {
        content: ""; position: absolute; right: -80px; top: -80px;
        width: 220px; height: 220px; border-radius: 50%;
        background: radial-gradient(circle, rgba(45,212,191,.1), transparent 70%);
    }
    .cta-inner h3 { font-size: 1.35rem; font-weight: 700; color: #f1f5f9; margin-bottom: 6px; }
    .cta-inner p { font-size: .92rem; color: var(--text-sub); }
    @media (max-width: 700px) {
        .cta-inner { flex-direction: column; text-align: center; padding: 32px 24px; }
        .cta-inner .btn-amber { width: 100%; }
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #040B14;
        border-top: 1px solid rgba(45,212,191,.08);
        padding-top: 60px;
    }
    .footer-grid {
        display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 40px; padding-bottom: 48px;
    }
    .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
    .footer-logo-text { font-size: 1.12rem; font-weight: 800; color: #f8fafc; letter-spacing: -.01em; }
    .footer-brand p { font-size: .85rem; line-height: 1.75; color: var(--text-sub); max-width: 340px; }
    .footer-col h4 {
        font-size: .9rem; font-weight: 700; color: #e2e8f0;
        margin-bottom: 16px; letter-spacing: .02em;
    }
    .footer-col ul { list-style: none; display: grid; gap: 9px; }
    .footer-col ul li { font-size: .84rem; color: var(--text-sub); line-height: 1.55; }
    .footer-col ul li a { transition: color .2s; }
    .footer-col ul li a:hover { color: var(--accent); }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,.05);
        padding: 18px 0;
    }
    .footer-bottom-inner {
        display: flex; justify-content: space-between; align-items: center;
        gap: 16px; flex-wrap: wrap;
    }
    .footer-bottom-inner span { font-size: .78rem; color: var(--text-weak); }
    @media (max-width: 920px) {
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    }
    @media (max-width: 560px) {
        .footer-grid { grid-template-columns: 1fr; gap: 26px; }
        .footer-bottom-inner { flex-direction: column; text-align: center; }
        .site-container { padding: 0 18px; }
    }

    .focus-visible:focus-visible {
        outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px;
    }

/* roulang page: category1 */
:root {
    --bg-deep: #060d1a;
    --bg-main: #0b1f3a;
    --bg-light: #11294d;
    --energy: #2dd4bf;
    --electric: #38bdf8;
    --amber: #f59e0b;
    --text-main: #e2e8f0;
    --text-sub: #94a3b8;
    --text-dim: #64748b;
    --danger: #f87171;
    --border-glass: rgba(255, 255, 255, 0.08);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --radius-lg: 20px;
    --radius-md: 14px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --space-section: 96px;
    --space-block: 64px;
    --font-main: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-main);
    background: var(--bg-deep);
    color: var(--text-main);
    line-height: 1.8;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  }

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

  input, textarea, select {
    font-family: inherit;
    font-size: 1rem;
  }

  ::selection {
    background: rgba(45, 212, 191, 0.3);
    color: #fff;
  }

  .site-container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(6, 13, 26, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

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

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

  .brand-logo span {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, #e2e8f0 40%, var(--energy) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .nav-tabs {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
  }

  .nav-tab {
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-sub);
    border: 1px solid transparent;
    white-space: nowrap;
    transition: all 0.3s ease;
  }

  .nav-tab:hover {
    color: var(--text-main);
    border-color: rgba(45, 212, 191, 0.3);
    background: rgba(45, 212, 191, 0.06);
  }

  .nav-tab.active {
    color: #06121f;
    background: var(--energy);
    border-color: var(--energy);
    font-weight: 700;
    box-shadow: 0 0 16px rgba(45, 212, 191, 0.35);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 26px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--energy), #14b8a6);
    color: #06121f;
    font-weight: 700;
    font-size: 0.9375rem;
    border: none;
    white-space: nowrap;
    box-shadow: 0 0 0 rgba(45, 212, 191, 0);
    transition: all 0.3s ease;
  }

  .btn-primary:hover {
    box-shadow: 0 0 22px rgba(45, 212, 191, 0.5);
    background: linear-gradient(135deg, #45e0cb, #14b8a6);
    color: #04101f;
    transform: translateY(-1px);
  }

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

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 28px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.9375rem;
    white-space: nowrap;
    transition: all 0.3s ease;
  }

  .btn-ghost:hover {
    border-color: var(--energy);
    color: var(--energy);
    background: rgba(45, 212, 191, 0.08);
  }

  .btn-ghost:active {
    transform: scale(0.97);
  }

  .menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .menu-toggle svg {
    width: 22px;
    height: 22px;
    stroke: var(--text-main);
  }

  .mobile-drawer {
    display: none;
    background: var(--bg-main);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 16px 0;
  }

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

  .mobile-drawer a {
    display: block;
    padding: 12px 24px;
    font-size: 1rem;
    color: var(--text-sub);
    border-left: 3px solid transparent;
  }

  .mobile-drawer a:hover,
  .mobile-drawer a.active {
    color: var(--energy);
    border-left-color: var(--energy);
    background: rgba(45, 212, 191, 0.06);
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 82vh;
    display: flex;
    align-items: center;
    padding: 72px 0;
    background-image: linear-gradient(110deg, rgba(6, 13, 26, 0.94) 15%, rgba(6, 13, 26, 0.72) 60%, rgba(6, 13, 26, 0.85) 100%), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center 30%;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -120px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(45, 212, 191, 0.16) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    position: relative;
    z-index: 2;
  }

  .hero h1 {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
  }

  .hero h1 .accent {
    color: var(--energy);
    position: relative;
    white-space: nowrap;
  }

  .hero h1 .accent::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--energy), var(--electric));
    border-radius: 4px;
  }

  .hero-sub {
    font-size: 1.0625rem;
    color: var(--text-sub);
    max-width: 560px;
    line-height: 1.9;
    margin-bottom: 36px;
  }

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

  .hero-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .hero-card-header {
    font-size: 0.875rem;
    color: var(--text-sub);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .hero-card-number {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--energy);
    line-height: 1.2;
    text-shadow: 0 0 24px rgba(45, 212, 191, 0.35);
  }

  .hero-card-label {
    font-size: 0.8125rem;
    color: var(--text-sub);
    margin-top: 4px;
  }

  .hero-card + .hero-card {
    margin-top: 16px;
  }

  /* ===== Section common ===== */
  .section {
    padding: var(--space-section) 0;
  }

  .section-alt {
    background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-main) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }

  .decoration-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    opacity: 0.5;
    z-index: 0;
  }

  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 48px;
    position: relative;
    z-index: 1;
  }

  .section-head h2 {
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.3;
    max-width: 480px;
  }

  .section-head p {
    color: var(--text-sub);
    max-width: 340px;
    font-size: 0.9375rem;
    line-height: 1.8;
    flex-shrink: 0;
  }

  .eyebrow {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--energy);
    text-transform: uppercase;
    margin-bottom: 12px;
    background: rgba(45, 212, 191, 0.1);
    border: 1px solid rgba(45, 212, 191, 0.24);
    padding: 4px 14px;
    border-radius: 999px;
  }

  /* ===== Feature cards ===== */
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
  }

  .feature-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--energy), var(--electric));
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .feature-card:hover {
    border-color: rgba(45, 212, 191, 0.24);
    transform: translateY(-4px);
  }

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

  .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(45, 212, 191, 0.1);
    border: 1px solid rgba(45, 212, 191, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--energy);
    transition: color 0.3s ease, background 0.3s ease;
  }

  .feature-card:hover .feature-icon {
    background: rgba(245, 158, 11, 0.12);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--amber);
  }

  .feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .feature-card p {
    font-size: 0.875rem;
    color: var(--text-sub);
    line-height: 1.8;
  }

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

  .stat-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, border-color 0.3s ease;
  }

  .stat-card:hover {
    transform: translateY(-3px);
    border-color: rgba(45, 212, 191, 0.2);
  }

  .stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--energy);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
  }

  .stat-number .plus {
    font-size: 1.75rem;
    color: var(--text-sub);
  }

  .stat-label {
    font-size: 0.875rem;
    color: var(--text-sub);
    margin-top: 8px;
  }

  .stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8125rem;
    color: var(--energy);
    background: rgba(45, 212, 191, 0.1);
    border-radius: 99px;
    padding: 2px 10px;
    margin-top: 12px;
  }

  /* ===== Scenario cards ===== */
  .scenario-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr 0.85fr;
    gap: 24px;
    position: relative;
    z-index: 1;
  }

  .scenario-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .scenario-card.featured {
    background: linear-gradient(145deg, rgba(45, 212, 191, 0.08), rgba(255, 255, 255, 0.02));
    border-color: rgba(45, 212, 191, 0.24);
  }

  .scenario-card:hover {
    transform: translateY(-4px);
    border-color: rgba(45, 212, 191, 0.3);
  }

  .scenario-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--electric);
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 99px;
    padding: 3px 12px;
    margin-bottom: 14px;
  }

  .scenario-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
  }

  .scenario-card p {
    font-size: 0.875rem;
    color: var(--text-sub);
    line-height: 1.8;
    margin-bottom: 16px;
  }

  .scenario-list {
    list-style: none;
    padding: 0;
  }

  .scenario-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-sub);
    padding: 6px 0;
  }

  .scenario-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--energy);
    flex-shrink: 0;
  }

  /* ===== Race cards ===== */
  .race-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
  }

  .race-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
  }

  .race-card:hover {
    border-color: rgba(45, 212, 191, 0.24);
    transform: translateY(-5px);
  }

  .race-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
  }

  .race-thumb img {
    width: 100%;
    height: 100%;
    transition: transform 0.4s ease;
  }

  .race-card:hover .race-thumb img {
    transform: scale(1.04);
  }

  .race-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(6, 13, 26, 0.6) 0%, transparent 40%);
  }

  .race-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    font-size: 0.75rem;
    font-weight: 600;
    color: #04101f;
    background: var(--energy);
    padding: 4px 12px;
    border-radius: 99px;
  }

  .race-body {
    padding: 20px 22px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .race-meta {
    font-size: 0.8125rem;
    color: var(--text-dim);
    margin-bottom: 10px;
    display: flex;
    gap: 12px;
  }

  .race-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
  }

  .race-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.5;
  }

  .race-desc {
    font-size: 0.875rem;
    color: var(--text-sub);
    line-height: 1.8;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .race-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--energy);
    margin-top: 14px;
    transition: gap 0.3s ease;
  }

  .race-link:hover {
    gap: 9px;
  }

  /* ===== Steps ===== */
  .steps-wrap {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .step-item {
    position: relative;
    padding-top: 20px;
  }

  .step-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: rgba(45, 212, 191, 0.18);
    line-height: 1;
    margin-bottom: 12px;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
  }

  .step-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .step-item p {
    font-size: 0.875rem;
    color: var(--text-sub);
    line-height: 1.8;
  }

  .step-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--energy), transparent);
    border-radius: 2px;
    opacity: 0.4;
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    max-width: 800px;
    position: relative;
    z-index: 1;
  }

  .faq-item {
    border-bottom: 1px solid var(--border-glass);
  }

  .faq-item:first-child {
    border-top: 1px solid var(--border-glass);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 4px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    text-align: left;
    transition: color 0.3s ease;
  }

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

  .faq-icon {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--energy);
    font-size: 1rem;
    transition: transform 0.4s ease, background 0.3s ease, border-color 0.3s ease;
    flex-shrink: 0;
    line-height: 1;
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--energy);
    color: #06121f;
    border-color: var(--energy);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s ease, padding 0.45s ease;
    padding: 0 4px;
    color: var(--text-sub);
    font-size: 0.9375rem;
    line-height: 1.9;
  }

  .faq-item.open .faq-answer {
    max-height: 300px;
    padding-bottom: 22px;
  }

  /* ===== CTA ===== */
  .cta-section {
    position: relative;
    padding: var(--space-section) 0;
    background: linear-gradient(120deg, rgba(6, 13, 26, 0.92), rgba(11, 31, 58, 0.86)), url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(45, 212, 191, 0.16) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
  }

  .cta-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    position: relative;
    z-index: 2;
  }

  .cta-copy h2 {
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
  }

  .cta-copy p {
    color: var(--text-sub);
    line-height: 1.9;
    margin-bottom: 28px;
    max-width: 440px;
  }

  .cta-form {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(10px);
  }

  .form-field {
    margin-bottom: 18px;
  }

  .form-field label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-sub);
    margin-bottom: 6px;
    font-weight: 500;
  }

  .form-field input,
  .form-field textarea {
    width: 100%;
    background: var(--bg-main);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px 14px;
    color: var(--text-main);
    font-size: 0.9375rem;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }

  .form-field input:focus,
  .form-field textarea:focus {
    border-color: var(--energy);
    box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.12);
  }

  .form-field textarea {
    resize: vertical;
    min-height: 100px;
  }

  .btn-submit {
    width: 100%;
    justify-content: center;
    padding: 14px 28px;
    margin-top: 6px;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #040b14;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 64px 0 0;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
  }

  .footer-logo-text {
    font-size: 1.125rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, #e2e8f0 40%, var(--energy) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .footer-brand p {
    font-size: 0.875rem;
    color: var(--text-sub);
    line-height: 1.9;
    max-width: 320px;
  }

  .footer-col h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 18px;
  }

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

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

  .footer-col ul li a {
    font-size: 0.875rem;
    color: var(--text-sub);
    transition: color 0.3s ease, padding-left 0.3s ease;
  }

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

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px 0;
  }

  .footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.8125rem;
    color: var(--text-dim);
  }

  /* ===== Breadcrumb ===== */
  .breadcrumb {
    padding: 24px 0 0;
    font-size: 0.8125rem;
    color: var(--text-dim);
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

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

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

  .breadcrumb span.sep {
    margin: 0 8px;
    color: var(--text-dim);
  }

  .breadcrumb .current {
    color: var(--text-sub);
  }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .nav-tabs {
      display: none;
    }

    .menu-toggle {
      display: inline-flex;
    }

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

    .hero-card-wrap {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
    }

    .hero-card + .hero-card {
      margin-top: 0;
    }

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

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

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

    .scenario-card.featured {
      grid-column: span 2;
    }

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

    .steps-wrap {
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

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

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

  @media (max-width: 768px) {
    :root {
      --space-section: 64px;
      --space-block: 40px;
    }

    .header-inner {
      height: 64px;
    }

    .brand-logo span {
      font-size: 1.0625rem;
    }

    .section {
      padding: var(--space-section) 0;
    }

    .section-head {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 32px;
    }

    .section-head p {
      max-width: 100%;
    }

    .hero {
      padding: 48px 0;
      min-height: auto;
    }

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

    .hero-card + .hero-card {
      margin-top: 0;
    }

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

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

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

    .scenario-card.featured {
      grid-column: span 1;
    }

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

    .steps-wrap {
      grid-template-columns: 1fr;
      gap: 28px;
    }

    .cta-inner {
      grid-template-columns: 1fr;
    }

    .cta-form {
      padding: 22px;
    }

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

    .footer-bottom-inner {
      flex-direction: column;
      text-align: center;
    }
  }

  @media (max-width: 520px) {
    .site-container {
      padding-left: 16px;
      padding-right: 16px;
    }

    .btn-primary {
      padding: 10px 20px;
      font-size: 0.875rem;
    }

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

    .scenario-card {
      padding: 22px;
    }

    .race-card h3 {
      font-size: 1rem;
    }

    .form-field input,
    .form-field textarea {
      font-size: 0.875rem;
    }
  }

/* roulang page: category2 */
:root {
    --bg-primary: #060D1A;
    --bg-secondary: #0B1F3A;
    --bg-tertiary: #11294D;
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent-teal: #2DD4BF;
    --accent-cyan: #22D3EE;
    --accent-blue: #38BDF8;
    --accent-orange: #F59E0B;
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --danger: #F87171;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-teal: 0 0 20px rgba(45, 212, 191, 0.35);
    --container: 1200px;
    --space-section: 96px;
    --space-section-mobile: 56px;
    --transition-default: all 0.3s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
  }

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

  a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-default);
  }

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

  input,
  select,
  textarea {
    font-family: inherit;
    font-size: 1rem;
  }

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

  .section-padding {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
  }

  .section-title-wrap {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 48px;
    flex-wrap: wrap;
  }

  .section-title {
    max-width: 640px;
  }

  .section-title h2 {
    font-size: clamp(1.5rem, 2.5vw, 2.25rem);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 12px;
  }

  .section-title p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
  }

  /* ── 玻璃拟态卡片 ── */
  .glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: var(--transition-default);
  }

  .glass-card:hover {
    border-color: rgba(45, 212, 191, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 24px rgba(45, 212, 191, 0.08);
  }

  /* ── 按钮 ── */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #2DD4BF 0%, #22D3EE 100%);
    color: #06251f;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 28px;
    border-radius: 999px;
    transition: var(--transition-default);
    box-shadow: 0 0 0 rgba(45, 212, 191, 0);
    white-space: nowrap;
  }

  .btn-primary:hover {
    box-shadow: var(--shadow-teal);
    background: linear-gradient(135deg, #2ee9d0 0%, #38d8f0 100%);
    transform: translateY(-2px);
  }

  .btn-primary:active {
    transform: scale(0.97);
    box-shadow: 0 0 10px rgba(45, 212, 191, 0.3);
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 12px 28px;
    border-radius: 999px;
    transition: var(--transition-default);
    white-space: nowrap;
  }

  .btn-secondary:hover {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
    background: rgba(45, 212, 191, 0.06);
  }

  .btn-orange {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #F59E0B, #F97316);
    color: #1a0e02;
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 36px;
    border-radius: 999px;
    transition: var(--transition-default);
    box-shadow: 0 0 0 rgba(245, 158, 11, 0);
  }

  .btn-orange:hover {
    box-shadow: 0 0 28px rgba(245, 158, 11, 0.4);
    transform: translateY(-2px);
  }

  .btn-orange:active {
    transform: scale(0.97);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(45, 212, 191, 0.5);
    color: var(--accent-teal);
    padding: 8px 20px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    background: transparent;
    transition: var(--transition-default);
  }

  .btn-outline:hover {
    background: rgba(45, 212, 191, 0.1);
    box-shadow: 0 0 16px rgba(45, 212, 191, 0.15);
  }

  /* ── 标签 chip ── */
  .chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    background: rgba(45, 212, 191, 0.12);
    color: var(--accent-teal);
    border: 1px solid rgba(45, 212, 191, 0.25);
    white-space: nowrap;
  }

  .chip-neutral {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .chip-orange {
    background: rgba(245, 158, 11, 0.12);
    color: var(--accent-orange);
    border-color: rgba(245, 158, 11, 0.3);
  }

  /* ── 分隔线 ── */
  .divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
    border: none;
  }

  /* ═══════ Header ═══════ */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(6, 13, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition-default);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 16px;
  }

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

  .site-logo svg {
    display: block;
  }

  .site-logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    white-space: nowrap;
  }

  .site-logo-text span {
    color: var(--accent-teal);
  }

  .nav-tabs {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.04);
    padding: 5px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-tabs::-webkit-scrollbar {
    display: none;
  }

  .nav-tab {
    padding: 8px 20px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: var(--transition-default);
  }

  .nav-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
  }

  .nav-tab.active {
    background: var(--accent-teal);
    color: #06251f;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(45, 212, 191, 0.25);
  }

  .header-cta {
    flex-shrink: 0;
  }

  .header-cta .btn-primary {
    padding: 9px 22px;
    font-size: 0.875rem;
  }

  .mobile-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.25rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .mobile-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 16px 24px 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  }

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

  .mobile-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition-default);
  }

  .mobile-menu a:hover,
  .mobile-menu a.active {
    background: rgba(45, 212, 191, 0.08);
    color: var(--accent-teal);
  }

  .mobile-menu .btn-primary {
    margin-top: 12px;
    width: 100%;
  }

  /* ═══════ Hero ═══════ */
  .hero {
    position: relative;
    min-height: 600px;
    height: 82vh;
    display: flex;
    align-items: center;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    padding-top: 80px;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, #060D1A 0%, rgba(6, 13, 26, 0.45) 40%, rgba(6, 13, 26, 0.6) 75%, #060D1A 100%);
    z-index: 1;
  }

  .hero::after {
    content: '';
    position: absolute;
    top: 20%;
    right: 8%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(45, 212, 191, 0.15), transparent 70%);
    z-index: 1;
    pointer-events: none;
  }

  .hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 48px;
    align-items: center;
  }

  .hero-content {
    max-width: 760px;
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent-teal);
    background: rgba(45, 212, 191, 0.08);
    padding: 6px 16px;
    border-radius: 999px;
    border: 1px solid rgba(45, 212, 191, 0.2);
    margin-bottom: 24px;
  }

  .hero h1 {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
  }

  .hero h1 .highlight {
    color: var(--accent-teal);
    background: linear-gradient(180deg, rgba(45, 212, 191, 0.15), transparent);
    padding: 0 4px;
  }

  .hero-sub {
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 620px;
  }

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

  /* 浮动数据卡片 */
  .hero-float-card {
    position: relative;
    z-index: 2;
    padding: 28px;
    border-radius: var(--radius-lg);
    background: rgba(11, 31, 58, 0.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-card);
  }

  .hero-float-card .float-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
  }

  .float-stat {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .float-stat:last-child {
    border-bottom: none;
  }

  .float-stat .stat-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(45, 212, 191, 0.12);
    color: var(--accent-teal);
    font-size: 1rem;
    flex-shrink: 0;
  }

  .float-stat .stat-num {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
  }

  .float-stat .stat-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
  }

  /* ═══════ 痛点区块 ═══════ */
  .pain-points {
    position: relative;
    background: var(--bg-primary);
  }

  .pain-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .pain-card {
    padding: 28px 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
  }

  .pain-card .icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: rgba(45, 212, 191, 0.1);
    color: var(--accent-teal);
    border: 1px solid rgba(45, 212, 191, 0.15);
    transition: var(--transition-default);
  }

  .pain-card:hover .icon-wrap {
    color: var(--accent-orange);
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.25);
    transform: rotate(-6deg);
  }

  .pain-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
  }

  .pain-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  .pain-card .turn-text {
    font-size: 0.85rem;
    color: var(--accent-teal);
    font-weight: 500;
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  /* ═══════ 解决方案 ═══════ */
  .solutions {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  }

  .solutions-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 20px;
    align-items: stretch;
  }

  .solution-card {
    padding: 32px;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
  }

  .solution-card.featured {
    border-color: rgba(45, 212, 191, 0.35);
    background: linear-gradient(145deg, rgba(45, 212, 191, 0.06), rgba(255, 255, 255, 0.03));
  }

  .solution-card.featured::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(45, 212, 191, 0.12), transparent 70%);
    pointer-events: none;
  }

  .solution-card .sol-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: rgba(45, 212, 191, 0.1);
    color: var(--accent-teal);
    border: 1px solid rgba(45, 212, 191, 0.18);
    margin-bottom: 20px;
    transition: var(--transition-default);
  }

  .solution-card:hover .sol-icon {
    transform: scale(1.05);
    color: var(--accent-blue);
    border-color: rgba(56, 189, 248, 0.3);
  }

  .solution-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
  }

  .solution-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    flex-grow: 1;
  }

  .solution-card ul {
    list-style: none;
    margin-bottom: 20px;
    padding: 0;
  }

  .solution-card ul li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 5px 0;
  }

  .solution-card ul li i {
    color: var(--accent-teal);
    font-size: 0.75rem;
    margin-top: 6px;
    flex-shrink: 0;
  }

  .solution-card .card-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-teal);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-default);
  }

  .solution-card .card-link i {
    transition: transform 0.3s ease;
  }

  .solution-card .card-link:hover {
    color: var(--accent-blue);
  }

  .solution-card .card-link:hover i {
    transform: translateX(4px);
  }

  /* ═══════ 装备分类陈列 ═══════ */
  .categories {
    position: relative;
    background: var(--bg-primary);
  }

  .cats-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
  }

  .cats-filter .chip {
    padding: 8px 20px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-default);
  }

  .cats-filter .chip:hover {
    border-color: var(--accent-teal);
    color: var(--accent-teal);
  }

  .cat-grid-large {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
  }

  .cat-card-large {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    position: relative;
  }

  .cat-card-large .cat-img {
    width: 100%;
    height: 260px;
    overflow: hidden;
    position: relative;
  }

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

  .cat-card-large:hover .cat-img img {
    transform: scale(1.03);
  }

  .cat-card-large .cat-img::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(180deg, transparent, rgba(6, 13, 26, 0.85));
  }

  .cat-card-large .cat-body {
    padding: 28px 30px 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .cat-card-large .cat-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 14px 0 10px;
    line-height: 1.4;
  }

  .cat-card-large .cat-body p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
  }

  .cat-card-large .cat-body .card-link {
    margin-top: auto;
    align-self: flex-start;
  }

  .cat-grid-small {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .cat-card-small {
    display: flex;
    gap: 16px;
    padding: 20px 22px;
    align-items: flex-start;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-card);
    transition: var(--transition-default);
  }

  .cat-card-small:hover {
    border-color: rgba(45, 212, 191, 0.28);
    transform: translateY(-3px);
  }

  .cat-card-small .small-img {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
  }

  .cat-card-small .small-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .cat-card-small .small-body h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.4;
  }

  .cat-card-small .small-body p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 8px;
  }

  .cat-card-small .small-body .card-link {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-teal);
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .cat-card-small .small-body .card-link i {
    transition: transform 0.3s;
  }

  .cat-card-small .small-body .card-link:hover i {
    transform: translateX(3px);
  }

  /* ═══════ 数据统计 ═══════ */
  .stats-section {
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-tertiary), var(--bg-primary));
    position: relative;
    overflow: hidden;
  }

  .stats-section::before {
    content: '';
    position: absolute;
    top: 30%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.08), transparent 70%);
    pointer-events: none;
  }

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

  .stat-card {
    text-align: center;
    padding: 36px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    transition: var(--transition-default);
    position: relative;
  }

  .stat-card:hover {
    border-color: rgba(45, 212, 191, 0.2);
    background: rgba(45, 212, 191, 0.03);
  }

  .stat-card .stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-teal);
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-shadow: 0 0 30px rgba(45, 212, 191, 0.3);
  }

  .stat-card .stat-arrow {
    color: var(--accent-teal);
    font-size: 1.1rem;
    margin-left: 4px;
  }

  .stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 10px;
    line-height: 1.5;
  }

  /* ═══════ 客户证言 ═══════ */
  .testimonials {
    background: var(--bg-primary);
  }

  .testimonial-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr 1fr;
    gap: 20px;
    align-items: stretch;
  }

  .testimonial-card {
    padding: 32px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-default);
  }

  .testimonial-card.middle {
    transform: scale(1.05);
    border-color: rgba(45, 212, 191, 0.2);
  }

  .testimonial-card .quote-icon {
    font-size: 2rem;
    color: var(--accent-teal);
    opacity: 0.5;
    line-height: 1;
    margin-bottom: 16px;
  }

  .testimonial-card p {
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.75;
    flex-grow: 1;
    margin-bottom: 20px;
  }

  .testimonial-card .t-person {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .testimonial-card .t-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue));
    color: #06251f;
    font-weight: 700;
    font-size: 0.95rem;
    flex-shrink: 0;
  }

  .testimonial-card .t-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
  }

  .testimonial-card .t-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
  }

  .testimonial-card .t-stars {
    color: var(--accent-orange);
    font-size: 0.8rem;
    margin-top: 4px;
  }

  /* ═══════ 流程 ═══════ */
  .process-section {
    background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
  }

  .process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
  }

  .process-step {
    text-align: left;
    padding: 28px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    position: relative;
    transition: var(--transition-default);
  }

  .process-step:hover {
    border-color: rgba(45, 212, 191, 0.25);
    transform: translateY(-4px);
  }

  .process-step .step-num {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent-teal);
    margin-bottom: 12px;
  }

  .process-step .step-content {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  .process-step h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
  }

  /* ═══════ FAQ ═══════ */
  .faq-section {
    background: var(--bg-primary);
  }

  .faq-list {
    max-width: 800px;
    margin: 0 auto;
  }

  .faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: left;
    width: 100%;
    background: none;
    border: none;
    transition: var(--transition-default);
  }

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

  .faq-question .faq-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease, color 0.3s ease;
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    color: var(--accent-teal);
  }

  .faq-answer {
    display: none;
    padding: 0 8px 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.75;
  }

  .faq-item.open .faq-answer {
    display: block;
  }

  /* ═══════ CTA ═══════ */
  .cta-section {
    position: relative;
    padding: 110px 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    text-align: center;
    overflow: hidden;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(6, 13, 26, 0.92), rgba(11, 31, 58, 0.82), rgba(6, 13, 26, 0.95));
    z-index: 1;
  }

  .cta-section .site-container {
    position: relative;
    z-index: 2;
  }

  .cta-section h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    line-height: 1.3;
  }

  .cta-section .cta-desc {
    max-width: 560px;
    margin: 0 auto 36px;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
  }

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

  .cta-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 20px;
  }

  /* ═══════ Footer ═══════ */
  .site-footer {
    background: #040B14;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 64px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
  }

  .footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
  }

  .footer-logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
  }

  .footer-brand p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 320px;
  }

  .footer-col h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
  }

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

  .footer-col ul li {
    margin-bottom: 10px;
    font-size: 0.875rem;
    color: var(--text-secondary);
  }

  .footer-col ul li a {
    color: var(--text-secondary);
    transition: color 0.2s;
  }

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

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 20px 0;
  }

  .footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--text-muted);
  }

  /* ═══════ 响应式 ═══════ */
  @media (max-width: 1024px) {
    .header-inner {
      gap: 12px;
    }

    .nav-tab {
      padding: 8px 14px;
      font-size: 0.8rem;
    }

    .hero-inner {
      grid-template-columns: 1fr;
    }

    .hero-float-card {
      display: none;
    }

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

    .solution-card.featured {
      grid-column: auto;
    }

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

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

    .testimonial-card.middle {
      transform: none;
    }

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

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

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

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

  @media (max-width: 768px) {
    :root {
      --space-section: 56px;
    }

    .site-container {
      padding: 0 20px;
    }

    .header-inner {
      height: 64px;
    }

    .nav-tabs {
      display: none;
    }

    .header-cta {
      display: none;
    }

    .mobile-toggle {
      display: flex;
    }

    .mobile-menu {
      top: 64px;
    }

    .hero {
      min-height: 560px;
      height: auto;
      padding-top: 100px;
      padding-bottom: 60px;
    }

    .hero h1 {
      font-size: 1.85rem;
      line-height: 1.25;
    }

    .hero-sub {
      font-size: 0.95rem;
    }

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

    .section-title-wrap {
      flex-direction: column;
      align-items: flex-start;
      gap: 16px;
    }

    .cats-filter {
      flex-wrap: nowrap;
      overflow-x: auto;
      padding-bottom: 8px;
      -webkit-overflow-scrolling: touch;
    }

    .cats-filter .chip {
      flex-shrink: 0;
    }

    .cat-card-large .cat-img {
      height: 200px;
    }

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

    .cta-section {
      padding: 80px 0;
    }

    .cta-section h2 {
      font-size: 1.6rem;
    }

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

    .footer-bottom-inner {
      flex-direction: column;
      text-align: center;
    }
  }

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

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

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

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

    .solution-card {
      padding: 24px;
    }

    .testimonial-card {
      padding: 24px;
    }
  }

  /* 无障碍 */
  a:focus-visible,
  button:focus-visible {
    outline: 2px solid var(--accent-teal);
    outline-offset: 3px;
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      transition-duration: 0.01ms !important;
    }
  }

/* roulang page: category3 */
:root{
  --bg-deep:#060D1A;
  --bg-primary:#0B1F3A;
  --bg-light:#11294D;
  --energy:#2DD4BF;
  --electric:#38BDF8;
  --amber:#F59E0B;
  --text-main:#E2E8F0;
  --text-secondary:#94A3B8;
  --text-muted:#64748B;
  --glass-bg:rgba(255,255,255,0.04);
  --glass-border:rgba(255,255,255,0.08);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-btn:999px;
  --shadow-card:0 8px 32px rgba(0,0,0,0.35);
  --transition:all 0.3s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background-color:var(--bg-deep);
  color:var(--text-main);
  font-family:'PingFang SC','Noto Sans SC','Microsoft YaHei',sans-serif;
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul,ol{list-style:none}
.site-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.glass-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(4px);
  -webkit-backdrop-filter:blur(4px);
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:linear-gradient(135deg,#2DD4BF,#38BDF8);
  color:#06121E;
  font-weight:700;
  font-size:0.95rem;
  border-radius:var(--radius-btn);
  padding:12px 28px;
  border:none;
  transition:var(--transition);
  box-shadow:0 0 0 rgba(45,212,191,0);
  line-height:1.4;
}
.btn-primary:hover{
  box-shadow:0 0 20px rgba(45,212,191,0.5);
  transform:translateY(-1px);
  background:linear-gradient(135deg,#4fe0c9,#56c5f9);
}
.btn-primary:active{transform:scale(0.97)}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:rgba(255,255,255,0.04);
  color:var(--text-main);
  font-weight:600;
  font-size:0.95rem;
  border-radius:var(--radius-btn);
  padding:12px 28px;
  border:1px solid rgba(255,255,255,0.12);
  transition:var(--transition);
  line-height:1.4;
}
.btn-ghost:hover{
  border-color:var(--energy);
  color:var(--energy);
  background:rgba(45,212,191,0.06);
}
.btn-ghost:active{transform:scale(0.97)}
.btn-amber{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:linear-gradient(135deg,#F59E0B,#F97316);
  color:#1a1205;
  font-weight:700;
  font-size:1rem;
  border-radius:var(--radius-btn);
  padding:14px 34px;
  border:none;
  transition:var(--transition);
  box-shadow:0 0 0 rgba(245,158,11,0);
}
.btn-amber:hover{
  box-shadow:0 0 24px rgba(245,158,11,0.45);
  transform:translateY(-2px);
}
.btn-amber:active{transform:scale(0.97)}
.btn-sm{padding:9px 22px;font-size:0.875rem}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(6,13,26,0.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:24px;
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.25rem;
  font-weight:800;
  letter-spacing:-0.02em;
  color:var(--text-main);
  white-space:nowrap;
  flex-shrink:0;
}
.brand-logo svg{flex-shrink:0}
.nav-tabs{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 auto;
}
.nav-tab{
  padding:8px 18px;
  border-radius:var(--radius-btn);
  font-size:0.925rem;
  font-weight:500;
  color:var(--text-secondary);
  transition:var(--transition);
  white-space:nowrap;
  border:1px solid transparent;
}
.nav-tab:hover{
  color:var(--text-main);
  background:rgba(255,255,255,0.06);
}
.nav-tab.active{
  background:rgba(45,212,191,0.12);
  color:var(--energy);
  border-color:rgba(45,212,191,0.3);
}
.header-cta{flex-shrink:0}
.menu-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:transparent;
  border:none;
  padding:8px;
  flex-shrink:0;
}
.menu-toggle span{
  width:22px;
  height:2px;
  background:var(--text-main);
  border-radius:2px;
  transition:var(--transition);
}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero-venue{
  position:relative;
  min-height:80vh;
  display:flex;
  align-items:center;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:80px 0 60px;
}
.hero-venue::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,#060D1A 0%,rgba(6,13,26,0.85) 45%,rgba(6,13,26,0.35) 100%);
}
.hero-venue::after{
  content:'';
  position:absolute;
  inset:0;
  background:radial-gradient(ellipse 45% 55% at 82% 50%,rgba(45,212,191,0.12),transparent 70%);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.2fr 0.8fr;
  gap:48px;
  align-items:center;
  width:100%;
}
.hero-content{max-width:760px}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(45,212,191,0.12);
  border:1px solid rgba(45,212,191,0.3);
  color:var(--energy);
  font-size:0.8rem;
  font-weight:600;
  padding:5px 14px;
  border-radius:var(--radius-btn);
  letter-spacing:0.04em;
  margin-bottom:20px;
}
.hero-venue h1{
  font-size:clamp(2rem,4.5vw,3.25rem);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-0.02em;
  color:#fff;
  margin-bottom:18px;
}
.hero-venue .hero-sub{
  font-size:1.05rem;
  color:var(--text-secondary);
  max-width:620px;
  line-height:1.8;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.hero-visual{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:20px;
  justify-content:flex-end;
  align-items:flex-end;
}
.stat-card{
  padding:22px 26px;
  width:240px;
  text-align:left;
}
.stat-card .stat-number{
  font-size:2rem;
  font-weight:800;
  color:var(--energy);
  line-height:1.2;
  letter-spacing:-0.02em;
}
.stat-card .stat-label{
  font-size:0.85rem;
  color:var(--text-secondary);
  margin-top:6px;
}
.stat-card strong{
  color:var(--text-main);
  font-weight:600;
  font-size:0.9rem;
  display:block;
  margin-top:8px;
}
.stat-card-sm{
  width:200px;
  margin-right:40px;
}

/* ===== Intro / Chips ===== */
.intro-section{
  padding:64px 0 32px;
}
.intro-lead{
  font-size:1.125rem;
  color:var(--text-main);
  text-align:center;
  max-width:720px;
  margin:0 auto 28px;
  line-height:1.8;
}
.filter-chips{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
}
.filter-chip{
  padding:8px 20px;
  border-radius:var(--radius-btn);
  font-size:0.875rem;
  font-weight:500;
  color:var(--text-secondary);
  background:rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.08);
  transition:var(--transition);
}
.filter-chip:hover{
  color:var(--text-main);
  border-color:rgba(45,212,191,0.35);
}
.filter-chip.active{
  background:rgba(45,212,191,0.14);
  border-color:rgba(45,212,191,0.4);
  color:var(--energy);
}

/* ===== Section Common ===== */
.section-padding{padding:64px 0}
.section-head{
  margin-bottom:48px;
  max-width:720px;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{
  font-size:clamp(1.5rem,2.5vw,2.25rem);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-0.02em;
  color:#fff;
  margin-bottom:12px;
}
.section-title span{color:var(--energy)}
.section-sub{
  font-size:0.95rem;
  color:var(--text-secondary);
  line-height:1.8;
}
.section-divider{
  width:48px;
  height:3px;
  background:linear-gradient(90deg,var(--energy),var(--electric));
  border-radius:3px;
  margin-bottom:20px;
}
.section-head.center .section-divider{margin-left:auto;margin-right:auto}

/* ===== Feature ===== */
.feature-section{
  padding:64px 0;
  background:linear-gradient(180deg,transparent,rgba(11,31,58,0.35));
}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.feature-card{
  padding:28px 24px;
  border-radius:var(--radius-lg);
  transition:var(--transition);
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
}
.feature-card:hover{
  transform:translateY(-4px);
  border-color:rgba(45,212,191,0.35);
  background:rgba(255,255,255,0.06);
}
.feature-icon{
  width:48px;
  height:48px;
  border-radius:14px;
  background:rgba(45,212,191,0.12);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--energy);
  font-size:1.15rem;
  margin-bottom:16px;
  transition:var(--transition);
}
.feature-card:hover .feature-icon{
  background:rgba(245,158,11,0.14);
  color:var(--amber);
}
.feature-card h3{
  font-size:1.05rem;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.feature-card p{
  font-size:0.875rem;
  color:var(--text-secondary);
  line-height:1.75;
}

/* ===== Plan / Service Showcase ===== */
.plan-section{
  padding:64px 0;
}
.plan-grid-large{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-bottom:24px;
}
.plan-grid-small{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.plan-card{
  overflow:hidden;
  border-radius:var(--radius-lg);
  transition:var(--transition);
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  display:flex;
  flex-direction:column;
}
.plan-card:hover{
  border-color:rgba(45,212,191,0.3);
  transform:translateY(-4px);
}
.plan-card-img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:var(--transition);
}
.plan-card:hover .plan-card-img{transform:scale(1.02)}
.plan-card-body{
  padding:26px 24px;
  flex:1;
  display:flex;
  flex-direction:column;
}
.plan-card-body h3{
  font-size:1.15rem;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.plan-card-body .plan-brief{
  font-size:0.9rem;
  color:var(--text-secondary);
  line-height:1.75;
  margin-bottom:16px;
}
.plan-card-list{
  margin-bottom:20px;
  flex:1;
}
.plan-card-list li{
  position:relative;
  padding-left:22px;
  font-size:0.875rem;
  color:var(--text-secondary);
  margin-bottom:8px;
  line-height:1.7;
}
.plan-card-list li::before{
  content:'';
  position:absolute;
  left:2px;
  top:9px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--energy);
  box-shadow:0 0 8px rgba(45,212,191,0.5);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:0.9rem;
  font-weight:600;
  color:var(--energy);
  transition:var(--transition);
  margin-top:auto;
}
.link-more:hover{color:var(--text-main)}
.link-more:hover i{transform:translateX(4px)}
.link-more i{transition:var(--transition)}
.plan-card-sm .plan-card-body{padding:22px 20px}
.plan-card-sm h3{font-size:1rem}
.plan-card-sm p{font-size:0.84rem;color:var(--text-secondary);line-height:1.7}

/* ===== Scenario ===== */
.scenario-section{
  padding:64px 0;
  background:linear-gradient(180deg,transparent,rgba(11,31,58,0.4));
}
.scenario-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.scenario-card{
  padding:28px 24px;
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,0.03);
  border:1px solid var(--glass-border);
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.scenario-card::after{
  content:'';
  position:absolute;
  bottom:0;
  left:0;
  width:100%;
  height:2px;
  background:linear-gradient(90deg,var(--energy),transparent);
  transform:scaleX(0);
  transform-origin:left;
  transition:var(--transition);
}
.scenario-card:hover::after{transform:scaleX(1)}
.scenario-card:hover{
  border-color:rgba(45,212,191,0.3);
  transform:translateY(-3px);
}
.scenario-icon{
  width:44px;
  height:44px;
  border-radius:12px;
  background:rgba(45,212,191,0.12);
  color:var(--energy);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.05rem;
  margin-bottom:16px;
}
.scenario-card h3{
  font-size:1rem;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.scenario-card p{
  font-size:0.85rem;
  color:var(--text-secondary);
  line-height:1.75;
}

/* ===== Process ===== */
.process-section{
  padding:64px 0;
}
.process-steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.process-step{
  position:relative;
  padding:28px 24px 24px;
  border-radius:var(--radius-lg);
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  transition:var(--transition);
}
.process-step:hover{
  border-color:rgba(45,212,191,0.3);
  transform:translateY(-4px);
}
.step-num{
  font-size:2.4rem;
  font-weight:800;
  line-height:1;
  background:linear-gradient(135deg,var(--energy),var(--electric));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  margin-bottom:12px;
}
.process-step h3{
  font-size:1rem;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:8px;
}
.process-step p{
  font-size:0.85rem;
  color:var(--text-secondary);
  line-height:1.7;
}
.step-line{
  position:absolute;
  top:52px;
  right:-24px;
  width:24px;
  height:1px;
  background:linear-gradient(90deg,rgba(56,189,248,0.5),transparent);
}
.process-step:last-child .step-line{display:none}

/* ===== FAQ ===== */
.faq-section{
  padding:64px 0;
  background:linear-gradient(180deg,transparent,rgba(11,31,58,0.3));
}
.faq-list{
  max-width:840px;
  margin:0 auto;
}
.faq-item{
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.faq-item:first-child{border-top:1px solid rgba(255,255,255,0.08)}
.faq-question{
  width:100%;
  background:transparent;
  border:none;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  padding:22px 4px;
  text-align:left;
  font-size:1rem;
  font-weight:600;
  color:var(--text-main);
  transition:var(--transition);
}
.faq-question:hover{color:var(--energy)}
.faq-question i{
  flex-shrink:0;
  color:var(--energy);
  transition:transform 0.35s ease;
  font-size:1.1rem;
}
.faq-item.open .faq-question i{
  transform:rotate(45deg);
}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height 0.4s ease;
  padding:0 4px;
}
.faq-answer-inner{
  padding-bottom:22px;
  font-size:0.9rem;
  color:var(--text-secondary);
  line-height:1.85;
}

/* ===== CTA ===== */
.cta-section{
  position:relative;
  padding:88px 0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.cta-section::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,13,26,0.92),rgba(6,13,26,0.82));
}
.cta-inner{
  position:relative;
  z-index:2;
  text-align:center;
  max-width:720px;
  margin:0 auto;
}
.cta-inner h2{
  font-size:clamp(1.5rem,2.5vw,2.25rem);
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:-0.02em;
}
.cta-inner p{
  font-size:1rem;
  color:var(--text-secondary);
  margin-bottom:32px;
  line-height:1.85;
}

/* ===== Footer ===== */
.site-footer{
  background:#040B14;
  border-top:1px solid rgba(255,255,255,0.04);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:40px;
}
.footer-brand p{
  font-size:0.875rem;
  color:var(--text-secondary);
  line-height:1.75;
  margin-top:16px;
  max-width:320px;
}
.footer-logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.2rem;
  font-weight:800;
  color:var(--text-main);
  letter-spacing:-0.02em;
}
.footer-col h4{
  font-size:1rem;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:16px;
}
.footer-col ul li{
  margin-bottom:10px;
  font-size:0.875rem;
  color:var(--text-secondary);
  line-height:1.6;
}
.footer-col a{
  transition:var(--transition);
}
.footer-col a:hover{
  color:var(--energy);
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.05);
  padding:20px 0;
}
.footer-bottom-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:0.8125rem;
  color:var(--text-muted);
}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .feature-grid{
    grid-template-columns:1fr 1fr;
  }
  .scenario-grid{
    grid-template-columns:1fr 1fr;
  }
  .process-steps{
    grid-template-columns:1fr 1fr;
  }
  .plan-grid-small{
    grid-template-columns:1fr 1fr;
  }
  .plan-grid-small .plan-card:last-child{
    grid-column:span 2;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
  .hero-inner{
    grid-template-columns:1fr;
  }
  .hero-visual{
    flex-direction:row;
    justify-content:flex-start;
  }
  .stat-card-sm{margin-right:0}
}
@media(max-width:768px){
  .site-container{padding-left:16px;padding-right:16px}
  .header-inner{height:auto;padding:14px 0;flex-wrap:wrap}
  .menu-toggle{display:flex}
  .header-cta{display:none}
  .nav-tabs{
    position:fixed;
    top:0;
    right:0;
    width:280px;
    height:100vh;
    flex-direction:column;
    align-items:stretch;
    background:rgba(6,13,26,0.98);
    border-left:1px solid rgba(255,255,255,0.06);
    padding:96px 24px 24px;
    gap:8px;
    transform:translateX(100%);
    transition:transform 0.35s ease;
    box-shadow:-16px 0 40px rgba(0,0,0,0.5);
    margin:0;
  }
  .nav-tabs.open{transform:translateX(0)}
  .nav-tab{
    padding:13px 16px;
    border-radius:12px;
    font-size:1rem;
  }
  .hero-venue{
    min-height:auto;
    padding:64px 0 48px;
  }
  .hero-venue h1{font-size:clamp(1.7rem,4.5vw,2.4rem)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{
    width:100%;
  }
  .hero-visual{
    flex-direction:column;
    align-items:stretch;
  }
  .stat-card,.stat-card-sm{width:100%}
  .section-padding{padding:48px 0}
  .faq-question{font-size:0.95rem}
  .footer-bottom-inner{
    flex-direction:column;
    text-align:center;
  }
}
@media(max-width:520px){
  .feature-grid{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .process-steps{grid-template-columns:1fr}
  .plan-grid-large{grid-template-columns:1fr}
  .plan-grid-small{grid-template-columns:1fr}
  .plan-grid-small .plan-card:last-child{grid-column:span 1}
  .plan-card-sm .plan-card-body{padding:18px 16px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .filter-chips{overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start;padding-bottom:4px}
  .filter-chip{flex-shrink:0}
  .brand-logo{font-size:1.1rem}
  .brand-logo svg{width:26px;height:26px}
}