.doc-filter{display:flex;justify-content:center;gap:12px;margin-bottom:40px;flex-wrap:wrap}
.doc-filter button{border:1px solid var(--border-light);background:var(--white);padding:8px 22px;border-radius:50px;font-size:14px;font-weight:500;color:var(--text-mid);cursor:pointer;transition:all .2s;font-family:var(--font-cn)}
.doc-filter button.active,.doc-filter button:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.doc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.doc-card{background:var(--white);border-radius:var(--radius-md);border:1px solid var(--border-light);overflow:hidden;transition:all .3s}
.doc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.doc-av{height:220px;background:linear-gradient(135deg,var(--blue-light),#DCE8FF);display:flex;align-items:center;justify-content:center;position:relative}
.doc-av i{font-size:64px;color:var(--blue);opacity:.3}
.doc-av .rank{position:absolute;top:12px;right:12px;background:var(--orange);color:#fff;padding:3px 10px;border-radius:50px;font-size:11px;font-weight:600}
.doc-av .years{position:absolute;bottom:12px;left:12px;background:rgba(10,22,40,0.6);color:#fff;padding:2px 10px;border-radius:50px;font-size:11px}
.doc-info{padding:20px}
.doc-info h5{font-size:18px;font-weight:600;margin-bottom:2px}
.doc-info .title{color:var(--blue);font-size:13px;font-weight:500;margin-bottom:8px}
.doc-info .skill{color:var(--text-mid);font-size:13px;line-height:1.5}
.doc-info .desc{color:var(--text-light);font-size:13px;line-height:1.6;margin-bottom:16px}
.doc-info .btn-sm{display:inline-flex;align-items:center;gap:4px;background:var(--orange);color:#fff;padding:7px 18px;border-radius:50px;font-size:13px;font-weight:500;text-decoration:none;transition:all .3s;font-family:var(--font-cn)}
.doc-info .btn-sm:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:0 4px 12px rgba(255,125,52,0.3)}
.process{padding:80px 0;background:var(--bg-gray)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-step{text-align:center;position:relative}
.process-step .num{width:56px;height:56px;border-radius:50%;background:var(--blue-light);color:var(--blue);font-family:var(--font-en);font-weight:700;font-size:22px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;transition:all .3s}
.process-step:hover .num{background:var(--blue);color:#fff}
.process-step h4{font-size:16px;font-weight:600;margin-bottom:6px}
.process-step p{color:var(--text-light);font-size:13px;line-height:1.6}
.process-step .arrow{position:absolute;top:18px;right:-20px;color:var(--border-light);font-size:20px}
.process-step:last-child .arrow{display:none}
@media(max-width:1024px){.doc-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:768px){.doc-grid{grid-template-columns:1fr}.doc-card{max-width:400px;margin:0 auto}.process-steps{grid-template-columns:1fr 1fr;gap:30px}.process-step .arrow{display:none}}