:root{--bg:#101316;--panel:#171c20;--edge:#2c343a;--text:#eef1f2;--muted:#a9b2b8;--orange:#ff7b18}*{box-sizing:border-box}body{color:var(--text);background:radial-gradient(circle at 55% 40%,#20282e,#101316 58%);margin:0;font-family:Arial,Helvetica,sans-serif}header{border-bottom:1px solid var(--edge);align-items:center;gap:48px;height:78px;padding:0 28px;display:flex}.brand{letter-spacing:-1px;font-size:27px;font-weight:800}.brand span{color:var(--orange)}nav{color:#c7cdd0;align-self:stretch;align-items:center;gap:30px;font-size:14px;display:flex}nav b{color:#fff;border-bottom:3px solid var(--orange);align-items:center;height:100%;display:flex}.stage{border:1px solid var(--edge);color:var(--muted);border-radius:99px;margin-left:auto;padding:8px 12px;font-size:11px}.workspace{grid-template-columns:350px minmax(460px,1fr) 280px;gap:14px;min-height:calc(100vh - 78px);padding:14px;display:grid}.controls,.summary,.preview{border:1px solid var(--edge);background:#171c20eb;border-radius:12px}.controls,.summary{padding:22px}h1{margin:0 0 8px;font-size:27px}h2{margin:0 0 22px;font-size:18px}.muted,.note,.warning{color:var(--muted);font-size:14px;line-height:1.45}.warning{color:#ffad64}.prompt-card{background:#11161a;border:1px solid #39434a;border-radius:8px;margin:18px 0;padding:14px}.prompt-card label{margin-bottom:8px;font-size:14px;font-weight:700;display:block}.prompt-card textarea{resize:vertical;color:#eef1f2;background:#0e1215;border:1px solid #3a454c;border-radius:6px;width:100%;min-height:110px;padding:10px;font:13px/1.4 Arial,Helvetica,sans-serif;display:block}.prompt-button{color:#fff;background:#273036;border:1px solid #526068;margin:10px 0 0;padding:10px;font-size:13px}fieldset{border:0;border-top:1px solid var(--edge);margin:20px 0 0;padding:18px 0 5px}legend{padding:0 7px 0 0;font-size:14px;font-weight:700}.control{color:#cfd5d8;justify-content:space-between;align-items:center;gap:12px;margin:10px 0;font-size:13px;display:flex}.control input{color:#fff;background:#101316;border:1px solid #3a454c;border-radius:6px;width:92px;padding:9px;font-size:14px}.control.text-control{align-items:flex-start}.control.text-control input{font-family:inherit}button{cursor:pointer;border-radius:7px;width:100%;margin-top:10px;padding:13px;font-size:15px;font-weight:700}button:disabled{opacity:.45;cursor:not-allowed}.primary{background:var(--orange);color:#151515;border:0}.secondary{color:#e9edef;background:0 0;border:1px solid #4e5a61}.preview{flex-direction:column;min-height:620px;display:flex;overflow:hidden}.preview-bar{height:47px;color:var(--muted);border-bottom:1px solid var(--edge);justify-content:space-between;align-items:center;padding:0 18px;font-size:12px;display:flex}.preview-bar span:first-child{color:#fff;font-weight:700}.model{background-image:linear-gradient(#283238 1px,#0000 1px),linear-gradient(90deg,#283238 1px,#0000 1px);background-size:32px 32px;flex:1;place-items:center;padding:44px;display:grid;overflow:hidden}.round-model{isolation:isolate;position:relative}.round-case,.lid-ghost{aspect-ratio:1;border-radius:50%;width:min(68vw,420px);position:absolute}.round-case{z-index:1;background:#3d454c;border:18px solid #606a73;box-shadow:26px 36px 24px #0000008c,inset 0 0 0 7px #242b30}.round-case i{aspect-ratio:1;background:#11161a;border:2px solid #889199;border-radius:50%;width:calc(min(68vw,420px)/14);position:absolute;transform:translate(-50%,-50%);box-shadow:inset 0 0 9px #000}.lid-ghost{z-index:0;text-align:center;background:#49535c;border:16px solid #68737b;place-content:center;display:grid;transform:translate(24%,-18%)rotateX(55deg)rotate(12deg);box-shadow:18px 18px 18px #00000059}.lid-ghost b{text-transform:uppercase;font-size:clamp(24px,5vw,48px)}.lid-ghost small{color:#cad1d4;margin-top:5px}.caption{color:var(--muted);border-top:1px solid var(--edge);padding:14px 18px;font-size:13px}dl{margin:0}dt,dd{border-bottom:1px solid var(--edge);padding:11px 0;font-size:13px;display:inline-block}dt{width:60%;color:var(--muted)}dd{text-align:right;width:40%;margin:0}.callout{border-left:3px solid var(--orange);color:#c4cbcf;background:#20272c;margin-top:22px;padding:13px;font-size:13px;line-height:1.5}@media (max-width:1050px){header{gap:20px}nav span{display:none}.workspace{grid-template-columns:330px 1fr}.summary{grid-column:1/-1}.summary dl{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.summary dt,.summary dd{width:auto}.summary dd{text-align:left}}@media (max-width:700px){header{height:auto;min-height:64px;padding:14px 16px}.brand{font-size:23px}.stage{display:none}.workspace{padding:10px;display:block}.controls,.preview,.summary{margin-bottom:10px}.preview{min-height:430px}.model{padding:35px 10px}.round-case,.lid-ghost{width:min(80vw,360px)}.summary dl{grid-template-columns:repeat(2,1fr)}}