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var(--line)}.viewer-empty,.viewer-loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--s3);text-align:center;padding:var(--s5);color:var(--steel);font-size:.9rem}.spinner{width:22px;height:22px;border:2px solid var(--line-strong);border-top-color:var(--ink);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2s}*{transition:none!important}}.param-group{margin-bottom:var(--s5)}.param-group-title{font-size:.76rem;font-weight:620;text-transform:uppercase;letter-spacing:.07em;color:var(--steel-2);margin-bottom:var(--s3);padding-bottom:5px;border-bottom:1px solid var(--line)}.param-row{margin-bottom:var(--s4)}.param-label{display:flex;align-items:baseline;gap:7px;margin-bottom:5px;font-size:.87rem}.param-symbol{font-family:var(--mono);font-weight:700;font-size:.8rem;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r1);padding:1px 6px;color:var(--ink)}.param-input-wrap{display:flex;align-items:stretch;border:1px solid var(--line-strong);border-radius:var(--r2);overflow:hidden;background:var(--white)}.param-input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(11,92,255,.13)}.param-input{flex:1 1;min-width:0;border:0;padding:9px 11px;font:inherit;font-family:var(--mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--ink);background:transparent}.param-input:focus{outline:none}.param-unit{display:flex;align-items:center;padding:0 11px;background:var(--paper-2);border-left:1px solid var(--line);font-family:var(--mono);font-size:.82rem;color:var(--steel)}.param-help{font-size:.8rem;color:var(--steel-2);margin-top:4px}.param-help-toggle{background:none;border:0;padding:0;cursor:pointer;font:inherit;font-size:.8rem;color:var(--accent-ink);text-decoration:underline}.param-row[data-invalid=true] .param-input-wrap{border-color:var(--bad)}.param-row[data-suspect=true] .param-input-wrap{border-color:var(--warn)}.param-msg{font-size:.82rem;margin-top:5px}.param-msg.error{color:var(--bad)}.param-msg.warning{color:var(--warn)}.sum-row{display:flex;justify-content:space-between;gap:var(--s3);padding:7px 0;border-bottom:1px solid var(--line);font-size:.9rem}.sum-row:last-of-type{border-bottom:0}.sum-row .k{color:var(--steel)}.sum-row .v{font-family:var(--mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.sum-total{display:flex;justify-content:space-between;align-items:baseline;padding-top:var(--s3);border-top:2px solid var(--ink);margin-top:var(--s3)}.sum-total .v{font-size:1.5rem;font-weight:640;font-family:var(--mono)}.mobile-tabs{display:none}@media (max-width:1080px){.cfg-grid{grid-template-columns:minmax(280px,1fr) minmax(0,1.2fr)}.cfg-summary-col{grid-column:1/-1}}@media (max-width:860px){.hero-grid{gap:var(--s6)}.footer-grid,.grid-2,.grid-3,.hero-grid{grid-template-columns:1fr}.footer-grid{gap:var(--s5)}.site-header nav{gap:var(--s3)}.site-header nav a:not(.nav-cta){display:none}.cfg-grid{display:block}.cfg-col,.mobile-tabs{margin-bottom:var(--s4)}.mobile-tabs{display:flex;gap:var(--s1);border-bottom:1px solid var(--line)}.mobile-tabs button{flex:1 1;background:none;border:0;border-bottom:2px solid transparent;padding:11px 6px;font:inherit;font-size:.87rem;color:var(--steel);cursor:pointer}.mobile-tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink);font-weight:600}.cfg-mobile-hidden{display:none}.viewer-box{min-height:260px}}