.resin-heading{padding:1.5rem 0 2rem;display:flex;justify-content:space-between;align-items:center;gap:2rem}.resin-heading h2{font-size:clamp(2.2rem,5vw,3.5rem);font-weight:500;letter-spacing:-.055em;line-height:1.05;max-width:650px;margin:.5rem 0 1rem}.resin-heading p{max-width:560px}.resin-symbol{width:90px;height:90px;border:1px solid var(--accent);border-radius:50% 50% 50% 4px;transform:rotate(-45deg);background:linear-gradient(135deg,transparent 45%,var(--accent-soft) 46%);flex-shrink:0}.resin-shapes{display:flex;gap:.6rem;margin:1rem 0;flex-wrap:wrap}.resin-shapes button{flex:1;padding:.9rem;border:1px solid var(--line);background:transparent;border-radius:8px;color:var(--ink);font:inherit;cursor:pointer}.resin-shapes button[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.resin-result{background:var(--accent-soft)}.resin-total{font-size:clamp(2.5rem,5vw,4rem);font-weight:500;letter-spacing:-.055em;line-height:1.1}.resin-total span{font-size:1.15rem;color:var(--muted);letter-spacing:0}.resin-recipe{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1.5rem 0}.resin-component{padding:1.3rem;background:var(--paper);border:1px solid var(--line);border-radius:8px}.resin-component strong{display:block;font-size:1.6rem;margin:.5rem 0}.resin-ratio-bar{display:flex;height:16px;border-radius:8px;overflow:hidden;background:var(--paper);margin:1rem 0}.resin-ratio-bar span:first-child{background:var(--accent)}.resin-ratio-bar span:last-child{background:var(--ink);opacity:.5}.resin-geometry{min-height:180px;display:grid;place-items:center;border-bottom:1px solid var(--line);margin-bottom:1.5rem}.resin-geometry svg{width:100%;max-width:340px;height:200px}.resin-instructions{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}.resin-instructions h3{font-size:1rem}.resin-instructions b{font-size:.75rem;letter-spacing:.1em;color:var(--accent)}@media(max-width:650px){.resin-symbol{display:none}.resin-instructions{grid-template-columns:1fr;gap:1rem}.resin-recipe{gap:.5rem}.resin-component{padding:.8rem}}@media print{.resin-form,.resin-heading,.resin-help,.resin-actions{display:none!important}.workspace{display:block}.resin-result{break-inside:avoid}}