.depth-system{padding:86px 0 96px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,color-mix(in srgb,var(--bg2) 72%,transparent),var(--bg))}.depth-heading{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:54px;align-items:end;margin-bottom:30px}.depth-heading h2{font-family:var(--serif);font-weight:400;font-size:clamp(2.5rem,4.8vw,5.2rem);line-height:.96;letter-spacing:-.04em;margin:10px 0 16px}.depth-heading>div>p:last-child{max-width:760px;color:var(--muted);font-size:1rem}.depth-coverage{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel)}.depth-coverage span{padding:15px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);color:var(--muted);font-size:.75rem}.depth-coverage span:nth-child(2n){border-right:0}.depth-coverage span:nth-last-child(-n+2){border-bottom:0}.depth-coverage b{display:block;color:var(--accent);font-family:var(--serif);font-weight:400;font-size:1.55rem}.depth-ladder{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line);margin-bottom:28px}.depth-ladder button{min-height:250px;padding:20px 17px;text-align:left;border:0;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--panel);color:var(--text);cursor:pointer;display:flex;flex-direction:column;align-items:flex-start}.depth-ladder button:hover{background:var(--panel2)}.depth-ladder button.active{background:linear-gradient(155deg,var(--accent-soft),var(--panel));box-shadow:inset 0 3px 0 var(--accent)}.depth-ladder button>span{font-family:var(--serif);font-size:1.4rem;color:var(--accent)}.depth-ladder strong{font-family:var(--serif);font-size:1.24rem;font-weight:400;line-height:1.05;margin-top:22px}.depth-ladder small{color:var(--accent2);margin-top:6px}.depth-ladder p{color:var(--muted);font-size:.76rem;line-height:1.5;margin:auto 0 0}.depth-planner{display:grid;grid-template-columns:.72fr 1.28fr;gap:30px;padding:26px;border:1px solid var(--line2);border-radius:18px;background:var(--panel)}.depth-planner-copy h3{font-family:var(--serif);font-weight:400;font-size:2rem;line-height:1.05;margin:7px 0 13px}.depth-planner-copy p:last-child{color:var(--muted);margin:0}.depth-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.depth-controls label{display:grid;gap:5px;color:var(--muted);font-size:.72rem}.depth-controls select,.depth-context select{min-height:44px;border:1px solid var(--line2);border-radius:9px;background:var(--bg);color:var(--text);padding:8px 10px}.depth-controls .button{grid-column:1/-1;min-height:48px}.depth-integrity{display:grid;grid-template-columns:190px 1fr;gap:24px;margin-top:18px;padding:16px 18px;border-left:3px solid var(--accent);background:color-mix(in srgb,var(--panel) 72%,transparent)}.depth-integrity strong{font-family:var(--serif);font-size:1.15rem;font-weight:400}.depth-integrity p{margin:0;color:var(--muted);font-size:.82rem}.depth-context{display:grid;grid-template-columns:minmax(0,1fr) minmax(180px,260px) auto;gap:18px;align-items:center;padding:18px 0 22px;border-bottom:1px solid var(--line)}.depth-context strong{display:block;font-family:var(--serif);font-weight:400;font-size:1.4rem}.depth-context p{margin:2px 0 0;color:var(--muted);font-size:.78rem}.depth-context label{display:grid;gap:5px;color:var(--muted);font-size:.7rem}.research-bridge{border:1px solid var(--line2);border-radius:16px;background:linear-gradient(145deg,var(--panel),var(--panel2));overflow:hidden}.research-bridge-head{padding:22px;border-bottom:1px solid var(--line)}.research-bridde-head h3{font-family:var(--serif);font-size:2rem;font-weight:400;margin:6px 0}.research-bridge-head p:last-child{color:var(--muted)}.research-grid{display:grid;grid-template-columns:repeat(3,1fr)}.research-grid article{min-height:190px;padding:20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.research-grid article:nth-child(3n){border-right:0}.research-grid article:nth-last-child(-n+3){border-bottom:0}.research-grid span{font-family:var(--serif);color:var(--accent);font-size:1.2rem}.research-grid strong{display:block;margin:18px 0 8px}.research-grid p{margin:0;color:var(--muted);font-size:.86rem}.research-actions{display:flex;gap:10px;padding:18px;border-top:1px solid var(--line)}
@media(max-width:1180px){.depth-ladder{grid-template-columns:repeat(4,minmax(0,1fr))}.depth-heading{grid-template-columns:1fr}.depth-coverage{max-width:560px}.depth-planner{grid-template-columns:1fr}.research-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.research-grid article:nth-child(3n){border-right:1px solid var(--line)}.research-grid article:nth-child(2n){border-right:0}.research-grid article:nth-last-child(-n+3){border-bottom:1px solid var(--line)}.research-grid article:nth-last-child(-n+2){border-bottom:0}}
@media(max-width:760px){.depth-system{padding:56px 0 64px}.depth-ladder{grid-template-columns:repeat(2,minmax(0,1fr))}.depth-ladder button{min-height:210px}.depth-controls{grid-template-columns:1fr}.depth-controls .button{grid-column:auto}.depth-integrity{grid-template-columns:1fr;gap:4px}.depth-context{grid-template-columns:1fr}.depth-context .button{width:100%}.research-grid{grid-template-columns:1fr}.research-grid article,.research-grid article:nth-child(2n),.research-grid article:nth-child(3n){border-right:0;border-bottom:1px solid var(--line)}.research-grid article:last-child{border-bottom:0}.research-actions{display:grid}.research-actions .button{width:100%}}
@media(max-width:420px){.depth-ladder{grid-template-columns:repeat(2,minmax(0,1fr))}.depth-ladder button{min-height:170px}.depth-coverage{grid-template-columns:1fr}.depth-coverage span{border-right:0}.depth-coverage span:nth-last-child(-n+2){border-bottom:1px solid var(--line)}.depth-coverage span:last-child{border-bottom:0}}