/* Template 1: SaaS Landing (极光幻夜 · 科技蓝青) */
:root {
  --primary: #00f2fe;
  --secondary: #38bdf8;
  --accent: #818cf8;
  --bg: #080d1a;
  --surface: rgba(17, 26, 46, 0.7);
  --surface-solid: #111a2e;
  --surface-hover: rgba(30, 41, 69, 0.9);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 242, 254, 0.35);
  --radius-capsule: 9999px;
  --radius-card: 20px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", sans-serif; line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
.container { max-width: 1220px; margin: 0 auto; padding: 0 1.5rem; }

/* Floating Capsule Header */
.saas-header { position: fixed; top: 1.25rem; left: 0; right: 0; z-index: 100; }
.saas-capsule-nav { max-width: 1080px; margin: 0 auto; background: rgba(15, 23, 42, 0.75); backdrop-filter: blur(16px); border: 1px solid var(--border-glow); border-radius: var(--radius-capsule); padding: 0.65rem 1.6rem; display: flex; align-items: center; justify-content: space-between; box-shadow: 0 10px 30px rgba(0, 242, 254, 0.1); }
.saas-logo img { height: 38px; display: block; }
.saas-nav-links { display: flex; gap: 2rem; list-style: none; }
.saas-nav-links a { color: var(--text-muted); font-size: 0.95rem; font-weight: 500; }
.saas-nav-links a:hover, .saas-nav-links a.active { color: var(--primary); text-shadow: 0 0 12px rgba(0, 242, 254, 0.5); }
.saas-btn-glow { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #080d1a; font-weight: 700; padding: 0.55rem 1.4rem; border-radius: var(--radius-capsule); display: inline-flex; align-items: center; gap: 0.5rem; box-shadow: 0 4px 20px rgba(0, 242, 254, 0.4); }
.saas-btn-glow:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0, 242, 254, 0.6); }

/* Split Left Hero */
.saas-hero { padding: 9.5rem 0 5rem; position: relative; background: radial-gradient(circle at 80% 20%, rgba(0, 242, 254, 0.12) 0%, transparent 60%); }
.saas-hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3.5rem; align-items: center; }
.saas-badge { display: inline-flex; align-items: center; gap: 0.6rem; background: rgba(0, 242, 254, 0.1); border: 1px solid var(--border-glow); padding: 0.4rem 1.1rem; border-radius: var(--radius-capsule); color: var(--primary); font-size: 0.85rem; font-weight: 600; margin-bottom: 1.5rem; }
.saas-hero-title { font-size: 3.2rem; line-height: 1.18; font-weight: 800; margin-bottom: 1.25rem; letter-spacing: -0.02em; }
.saas-gradient-text { background: linear-gradient(135deg, #ffffff 30%, var(--primary) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.saas-hero-desc { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 2rem; max-width: 580px; }
.saas-hero-actions { display: flex; gap: 1.25rem; align-items: center; margin-bottom: 2.5rem; }
.saas-btn-outline { border: 1px solid var(--border-glow); color: var(--text); padding: 0.65rem 1.6rem; border-radius: var(--radius-capsule); font-weight: 600; display: inline-flex; align-items: center; gap: 0.5rem; }
.saas-btn-outline:hover { background: rgba(0, 242, 254, 0.1); }
.saas-hero-stats-row { display: flex; gap: 2rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.saas-hero-stat strong { display: block; font-size: 1.5rem; color: var(--primary); }
.saas-hero-stat span { font-size: 0.85rem; color: var(--text-muted); }

/* 3D Card Stack Preview */
.saas-card-stack { position: relative; perspective: 1000px; }
.saas-preview-box { background: var(--surface); border: 1px solid var(--border-glow); border-radius: var(--radius-card); padding: 1.75rem; backdrop-filter: blur(20px); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4); }
.saas-preview-box img { width: 100%; border-radius: 12px; margin-bottom: 1rem; border: 1px solid var(--border); }
.saas-floating-chip { position: absolute; bottom: -1rem; right: -1rem; background: #111a2e; border: 1px solid var(--border-glow); border-radius: 14px; padding: 0.9rem 1.4rem; box-shadow: 0 10px 25px rgba(0, 242, 254, 0.25); display: flex; align-items: center; gap: 0.75rem; }

/* Stats Strip */
.saas-stats-strip { padding: 3rem 0; background: rgba(17, 26, 46, 0.4); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.saas-stats-flex { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 2rem; text-align: center; }
.saas-stat-box h3 { font-size: 2.4rem; color: var(--primary); font-weight: 800; margin-bottom: 0.35rem; }
.saas-stat-box p { color: var(--text-muted); font-size: 0.95rem; }

/* 3-Col Glass Cards */
.saas-section { padding: 6rem 0; }
.saas-sec-header { text-align: center; max-width: 680px; margin: 0 auto 4rem; }
.saas-sec-header h2 { font-size: 2.3rem; margin-bottom: 0.9rem; font-weight: 700; }
.saas-sec-header p { color: var(--text-muted); font-size: 1.05rem; }
.saas-glass-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.saas-glass-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-card); padding: 2.2rem; backdrop-filter: blur(12px); transition: all 0.3s ease; position: relative; }
.saas-glass-card:hover { transform: translateY(-6px); border-color: var(--border-glow); box-shadow: 0 12px 30px rgba(0, 242, 254, 0.15); }
.saas-card-icon { width: 56px; height: 56px; border-radius: 14px; background: rgba(0, 242, 254, 0.1); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 1.25rem; }
.saas-glass-card h3 { font-size: 1.3rem; margin-bottom: 0.75rem; }
.saas-glass-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }

/* Tabbed Download Hub */
.saas-download-hub { background: linear-gradient(180deg, rgba(17, 26, 46, 0.6) 0%, rgba(8, 13, 26, 0.9) 100%); border-radius: var(--radius-card); border: 1px solid var(--border-glow); padding: 3.5rem 2.5rem; }
.saas-hub-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; margin-top: 2rem; }
.saas-os-box { background: var(--surface-solid); border: 1px solid var(--border); border-radius: 16px; padding: 2rem; text-align: center; transition: all 0.3s ease; }
.saas-os-box:hover { border-color: var(--primary); transform: translateY(-4px); }
.saas-os-icon { font-size: 3rem; color: var(--primary); margin-bottom: 1rem; }
.saas-os-box h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.saas-os-box p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1.5rem; }

/* Club Alliance */
.saas-club-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
.saas-club-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 1.75rem; display: flex; gap: 1.25rem; align-items: center; }
.saas-club-avatar { width: 52px; height: 52px; border-radius: 12px; background: rgba(0, 242, 254, 0.15); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 700; }
.saas-club-info h4 { font-size: 1.15rem; margin-bottom: 0.25rem; }
.saas-club-info span { font-size: 0.82rem; color: var(--primary); }

/* Accordion FAQ */
.saas-faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
.saas-faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.saas-faq-q { padding: 1.25rem 1.75rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; }
.saas-faq-q:hover { color: var(--primary); }
.saas-faq-a { padding: 0 1.75rem 1.25rem; color: var(--text-muted); font-size: 0.95rem; border-top: 1px solid rgba(255, 255, 255, 0.04); padding-top: 0.9rem; }

/* Aurora Banner CTA */
.saas-cta-banner { background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(56, 189, 248, 0.05)); border: 1px solid var(--border-glow); border-radius: var(--radius-card); padding: 4.5rem 2rem; text-align: center; margin: 5rem 0; position: relative; overflow: hidden; }
.saas-cta-banner h2 { font-size: 2.6rem; margin-bottom: 1rem; }
.saas-cta-banner p { color: var(--text-muted); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }

/* 4-Col Mega Footer */
.saas-mega-footer { background: #050811; border-top: 1px solid var(--border); padding: 4.5rem 0 2rem; font-size: 0.9rem; }
.saas-ft-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.saas-ft-col h4 { font-size: 1.05rem; margin-bottom: 1.2rem; color: #ffffff; }
.saas-ft-links { list-style: none; display: flex; flex-direction: column; gap: 0.65rem; }
.saas-ft-links a { color: var(--text-muted); }
.saas-ft-links a:hover { color: var(--primary); }
.saas-ft-bottom { text-align: center; border-top: 1px solid var(--border); padding-top: 2rem; color: #64748b; font-size: 0.85rem; }

@media (max-width: 992px) {
  .saas-hero-grid { grid-template-columns: 1fr; text-align: center; }
  .saas-hero-desc { margin: 0 auto 2rem; }
  .saas-hero-actions { justify-content: center; }
  .saas-glass-grid, .saas-hub-grid, .saas-club-row { grid-template-columns: 1fr; }
  .saas-ft-grid { grid-template-columns: 1fr 1fr; }
  .saas-nav-links { display: none; }
}