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36px;position:relative;overflow:hidden}.hero:after{content:"";background:#ffffff0f;border-radius:50%;width:280px;height:280px;position:absolute;top:-60px;right:-60px}.hero h1{color:#fff;margin:0 0 8px;font-size:28px;font-weight:650}.hero p{color:#ffffffc7;max-width:640px;margin:0;line-height:1.7}.feature-card{cursor:pointer;background:#fff;border:1px solid #e6eaf1;border-radius:12px;flex-direction:column;gap:10px;height:100%;padding:18px 18px 16px;transition:box-shadow .18s,border-color .18s,transform .18s;display:flex}.feature-card:hover{border-color:#9dbcf0;transform:translateY(-2px);box-shadow:0 6px 20px #1b5fd11f}.feature-icon{border-radius:10px;justify-content:center;align-items:center;width:42px;height:42px;font-size:21px;display:flex}.feature-card h3{color:#0f1b2d;flex-wrap:wrap;align-items:center;gap:8px;margin:0;font-size:16px;font-weight:600;display:flex}.feature-card p{color:#5b6778;margin:0;font-size:13px;line-height:1.6}.group-head{align-items:baseline;gap:10px;margin:32px 0 14px;display:flex}.group-head h2{color:#0f1b2d;margin:0;font-size:18px;font-weight:650}.group-head span{color:#8592a6;font-size:13px}.demo-banner{background:linear-gradient(90deg,#fff6e8,#fffaf2);border:1.5px solid #f0a64a;border-radius:12px;align-items:flex-start;gap:14px;padding:14px 18px;display:flex}.demo-banner b{color:#b45309}.demo-badge{color:#fff;letter-spacing:.5px;background:#d97706;border-radius:4px;flex:none;margin-top:2px;padding:2px 8px;font-size:12px;font-weight:700}.std-item{border-bottom:1px solid #eef1f6;align-items:flex-start;gap:16px;padding:14px 4px;display:flex;position:relative}.std-item:last-child{border-bottom:0}.std-code{color:#1b5fd1;flex:none;min-width:112px;padding-top:1px;font-size:14px;font-weight:650}.std-name{color:#0f1b2d;font-weight:600;line-height:1.6}.std-sum{color:#5b6778;margin-top:2px;font-size:13px;line-height:1.7}mark.hl{color:inherit;background:#fff1b8;border-radius:2px;padding:0 1px}.outline-chapter{border-bottom:1px dashed 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.ck{color:#1b5fd1;position:absolute;top:8px;right:8px}.tl-entry{background:#f6f8fc;border-radius:8px;margin-bottom:8px;padding:8px 12px;font-size:13.5px;line-height:1.7}.tl-entry b{color:#0f1b2d}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px;display:grid}.stat{background:#f6f8fc;border-radius:10px;padding:12px 16px}.stat .l{color:#5b6778;font-size:12.5px}.stat .v{color:#0f1b2d;font-size:26px;font-weight:650;line-height:1.3}.stat .v small{color:#7a8698;margin-left:4px;font-size:13px;font-weight:400}@media (width<=768px){.page{padding:16px 14px 40px}.page-title h1{font-size:20px}.hero{border-radius:14px;padding:22px 20px}.hero h1{font-size:22px}.std-item{flex-direction:column;gap:4px;padding-right:36px}.std-copy{position:absolute;top:8px;right:-6px}.demo-banner{flex-direction:column;gap:8px}.demo-badge{align-self:flex-start}.group-head{flex-wrap:wrap;gap:2px 10px;margin-top:24px}.group-head span{flex-basis:100%}.feature-card{gap:6px;padding:14px}.feature-card .go{display:none}.card-lite{padding:16px}.model-grid{grid-template-columns:repeat(2,1fr)}}