:root{--primary:#0b2447;--blue:#1e5eff;--cyan:#00c2ff;--grad:linear-gradient(135deg, #0b2447, #1e5eff);--grad-c:linear-gradient(135deg, #1e5eff, #00c2ff);--dark:#0a1f3c;--text:#2c3e50;--t-light:#7b8794;--bg-light:#f5f8fc;--border:#e5ecf5;--shadow:0 6px 24px #0b24471a;--shadow-h:0 12px 36px #1e5eff2e;--radius:10px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{color:var(--text);background:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.7}a{color:var(--blue);text-decoration:none;transition:all .25s}a:hover{color:var(--cyan)}img{max-width:100%;height:auto;display:block}.container{max-width:1200px;margin:0 auto;padding:0 20px}.section{padding:72px 0}.section.gray{background:var(--bg-light)}.section-head{text-align:center;margin-bottom:44px}.section-head h2{color:var(--primary);margin-bottom:8px;font-size:30px;font-weight:800}.section-head p{color:var(--t-light);font-size:15px}.section-line{background:var(--grad-c);border-radius:2px;width:60px;height:3px;margin:14px auto 0}.btn{cursor:pointer;border:0;border-radius:6px;align-items:center;gap:8px;padding:11px 26px;font-size:15px;font-weight:600;transition:all .3s;display:inline-flex}.btn-solid{background:var(--grad-c);color:#fff;box-shadow:0 6px 18px #1e5eff59}.btn-solid:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 26px #1e5eff73}.btn-ghost{color:#fff;background:0 0;border:1.5px solid #ffffffb3}.btn-ghost:hover{color:#fff;background:#ffffff26}.btn-outline{color:var(--blue);border:1.5px solid var(--blue);background:0 0}.btn-outline:hover{background:var(--blue);color:#fff}@keyframes fadeUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}.fade-up{animation:.6s both fadeUp}.d-1{animation-delay:.1s}.d-2{animation-delay:.2s}.d-3{animation-delay:.3s}