:root{--bg: #f6f1e6;--bg-2: #efe9da;--surface: #fffdf8;--surface-2: #faf4ea;--ink: #1a1208;--ink-2: #5a4a35;--ink-3: #9a886c;--line: rgba(26, 18, 8, .1);--line-2: rgba(26, 18, 8, .18);--copper: #b5651d;--copper-2: #d4844a;--copper-deep: #8B4513;--copper-soft: #f5e6d3;--biltmore: #6a3a7a;--ok: #5d7a4a;--r: 4px;--r-lg: 8px;--density: 1}[data-theme=dark]{--bg: #1a1208;--bg-2: #221a0e;--surface: #251c10;--surface-2: #2e2415;--ink: #f5e6d3;--ink-2: #c4ad8c;--ink-3: #8a755a;--line: rgba(245, 230, 211, .1);--line-2: rgba(245, 230, 211, .18);--copper: #d4844a;--copper-2: #e8a06a;--copper-deep: #b5651d;--copper-soft: rgba(212, 132, 74, .14)}*{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif;font-weight:400;-webkit-font-smoothing:antialiased}body{min-height:100vh}button{font-family:inherit;color:inherit;background:none;border:none;cursor:pointer}.app{display:grid;grid-template-rows:auto 1fr;min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:20px 40px;border-bottom:1px solid var(--line);background:var(--surface);position:sticky;top:0;z-index:50;backdrop-filter:blur(6px)}.topbar-left{display:flex;align-items:center;gap:24px}.topbar-left img{height:48px;width:auto;display:block}[data-theme=dark] .topbar-left img{filter:invert(.92) hue-rotate(180deg) brightness(1.05)}.topbar-meta{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);padding-left:24px;border-left:1px solid var(--line)}.topbar-meta em{font-style:normal;color:var(--copper)}.topbar-actions{display:flex;align-items:center;gap:6px}.iconbtn{padding:8px 12px;border-radius:var(--r);font-size:12px;letter-spacing:.06em;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px;transition:background .15s,color .15s;text-decoration:none}.iconbtn:hover{background:var(--copper-soft);color:var(--copper-deep)}.main{display:grid;grid-template-columns:1fr 420px;gap:0;min-height:0}.builder{padding:calc(40px * var(--density)) calc(48px * var(--density));overflow-y:auto;max-width:100%}.sidebar{border-left:1px solid var(--line);background:var(--surface);position:sticky;top:65px;align-self:start;height:calc(100vh - 65px);display:flex;flex-direction:column}.hero{margin-bottom:calc(40px * var(--density));max-width:760px}.hero h1{font-family:Cormorant Garamond,serif;font-weight:500;font-size:44px;line-height:1.05;letter-spacing:-.005em;margin-bottom:14px}.hero h1 em{font-style:italic;color:var(--copper)}.hero p{font-size:15px;line-height:1.6;color:var(--ink-2);max-width:60ch}.hero .formula{margin-top:18px;padding:14px 18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);font-size:12px;color:var(--ink-2);display:flex;align-items:center;gap:14px;flex-wrap:wrap}.hero .formula b{font-weight:500;text-transform:uppercase;letter-spacing:.12em;font-size:10.5px;color:var(--ink-3)}.hero .formula code{font-family:JetBrains Mono,monospace;font-size:12px;color:var(--copper);background:var(--copper-soft);padding:3px 8px;border-radius:3px}.step{margin-bottom:calc(44px * var(--density));position:relative}.step.disabled{opacity:.32;pointer-events:none}.step.disabled .step-title{color:var(--ink-2)}.step-head{display:flex;align-items:baseline;gap:18px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}.step-num{font-family:Cormorant Garamond,serif;font-style:italic;font-size:22px;color:var(--copper);line-height:1;flex-shrink:0;font-weight:500}.step-num:before{content:"";display:inline-block;width:18px;height:1px;background:var(--copper);margin-right:10px;vertical-align:middle}.step-title{font-family:Cormorant Garamond,serif;font-weight:500;font-size:24px;line-height:1.1;color:var(--ink);letter-spacing:-.005em}.step-aside{margin-left:auto;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}.step-aside em{font-style:normal;color:var(--copper)}.step-hint{font-size:13px;line-height:1.55;color:var(--ink-2);margin-bottom:18px;max-width:64ch}.step-hint strong{color:var(--ink);font-weight:500}.family-select{position:relative;max-width:560px}.family-select select{width:100%;padding:16px 44px 16px 18px;background:var(--surface);border:1px solid var(--line-2);border-radius:var(--r);font-family:Cormorant Garamond,serif;font-size:18px;color:var(--ink);appearance:none;cursor:pointer;transition:border-color .15s}.family-select select:focus,.family-select select:hover{outline:none;border-color:var(--copper)}.family-select:after{content:"";position:absolute;right:18px;top:50%;width:8px;height:8px;border-right:1.5px solid var(--copper);border-bottom:1.5px solid var(--copper);transform:translateY(-70%) rotate(45deg);pointer-events:none}.base-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}.base-tile{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);cursor:pointer;transition:border-color .15s,background .15s;text-align:left}.base-tile:hover{border-color:var(--copper-2);background:var(--surface-2)}.base-tile.on{border-color:var(--copper);background:var(--copper-soft)}.base-tile .check{width:18px;height:18px;border:1.5px solid var(--line-2);border-radius:3px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--surface);transition:all .15s}.base-tile.on .check{background:var(--copper);border-color:var(--copper)}.base-tile.on .check:after{content:"";width:8px;height:5px;border-left:1.5px solid #fff;border-bottom:1.5px solid #fff;transform:rotate(-45deg) translate(1px,-1px)}.base-tile .b-label{flex:1;font-size:13.5px;color:var(--ink);line-height:1.3}.base-tile .b-code{font-family:JetBrains Mono,monospace;font-size:11px;color:var(--copper);background:var(--copper-soft);padding:3px 7px;border-radius:3px;letter-spacing:.02em}[data-theme=dark] .base-tile.on .b-code{background:#d4844a40}.finish-grid,.finish-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;max-width:900px}.finish-tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 16px 16px;cursor:pointer;text-align:center;transition:transform .2s ease,border-color .15s,box-shadow .2s;position:relative;overflow:hidden;display:block}.finish-tile:hover{border-color:var(--copper-2);transform:translateY(-2px);box-shadow:0 10px 24px -16px #1a120840}.finish-tile.on{border-color:var(--copper);background:var(--copper-soft)}.finish-tile.on:before{content:"✓";position:absolute;top:8px;right:8px;width:18px;height:18px;border-radius:50%;background:var(--copper);color:#fff;font-family:JetBrains Mono,monospace;font-size:11px;display:flex;align-items:center;justify-content:center}.finish-swatch{display:block;width:64px;height:64px;border-radius:50%;margin:0 auto 14px;box-shadow:inset 0 0 0 1px #0000001a,0 2px 8px -2px #00000026;position:relative;background-image:radial-gradient(circle at 30% 30%,rgba(255,255,255,.35),transparent 55%)}.finish-meta{display:block}.finish-name{display:block;font-family:Cormorant Garamond,serif;font-size:17px;font-weight:500;color:var(--ink);line-height:1.2;margin-bottom:4px;letter-spacing:-.005em}.finish-code{display:block;font-family:JetBrains Mono,monospace;font-size:10.5px;color:var(--copper);letter-spacing:.06em;text-transform:uppercase}.finish-default{position:absolute;top:8px;left:8px;font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}.brass-note{padding:18px 22px;background:var(--surface);border:1px solid var(--line-2);border-left:3px solid var(--copper);border-radius:0 var(--r) var(--r) 0;font-size:13.5px;color:var(--ink-2);line-height:1.6;max-width:680px}.brass-note strong{color:var(--ink);font-weight:500}.acc-group{margin-bottom:32px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px 20px}.acc-group-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}.acc-group-head .dot{width:7px;height:7px;border-radius:50%}.acc-group-head .gtitle{font-family:Cormorant Garamond,serif;font-size:18px;color:var(--ink);font-weight:500;letter-spacing:.005em;white-space:nowrap}.acc-group-head .gcount{font-size:10.5px;color:var(--ink-3);letter-spacing:.08em;text-transform:uppercase;margin-right:auto;font-family:JetBrains Mono,monospace}.dot-wall{background:#3a6b3a}.dot-ceil{background:#3a3d7a}.dot-post{background:#7a4a2a}.dot-bilt{background:var(--biltmore)}.dot-dec{background:#a0734a}.dot-parts{background:#888}.dot-gas{background:#7a5a2a}.dot-electric{background:#3a3d7a}.acc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px}.acc-item{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:10px 12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);cursor:pointer;transition:border-color .12s,background .12s,transform .12s;text-align:left;position:relative}.acc-item:hover{border-color:var(--copper-2);background:var(--surface-2);transform:translateY(-1px)}.acc-item.on{border-color:var(--copper);background:var(--copper-soft)}.acc-item.on:after{content:"✓";position:absolute;top:6px;right:6px;width:14px;height:14px;border-radius:50%;background:var(--copper);color:#fff;font-family:JetBrains Mono,monospace;font-size:10px;display:flex;align-items:center;justify-content:center}.acc-item .a-label{font-size:12.5px;color:var(--ink);line-height:1.3;font-weight:400;padding-right:18px}.acc-item.on .a-label{font-weight:500}.acc-item .a-code{font-family:JetBrains Mono,monospace;font-size:10px;color:var(--copper);background:var(--copper-soft);padding:1px 5px;border-radius:2px;letter-spacing:.04em}[data-theme=dark] .acc-item.on .a-code{background:#d4844a40}.biltmore-banner{margin-bottom:18px;padding:14px 18px;background:#6a3a7a12;border:1px solid rgba(106,58,122,.22);border-left:3px solid var(--biltmore);border-radius:0 var(--r) var(--r) 0;font-size:13px;color:var(--ink-2);line-height:1.55;max-width:760px}.biltmore-banner strong{color:var(--biltmore);font-weight:600;letter-spacing:.02em}[data-theme=dark] .biltmore-banner{background:#ba8ac812;border-color:#ba8ac838}[data-theme=dark] .biltmore-banner strong{color:#c8a3d6}.empty-notice{padding:16px 20px;background:var(--surface);border:1px dashed var(--line-2);border-radius:var(--r);font-size:13px;color:var(--ink-3);font-style:italic;line-height:1.5;max-width:600px}.sidebar-head{padding:24px 28px 18px;border-bottom:1px solid var(--line)}.sidebar-label{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}.sidebar-count{font-family:Cormorant Garamond,serif;font-size:46px;line-height:1;font-weight:500;color:var(--copper);letter-spacing:-.01em}.sidebar-count-sub{display:inline-block;margin-left:10px;font-family:Inter,sans-serif;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);vertical-align:middle}.sidebar-formula{margin-top:14px;font-size:11.5px;color:var(--ink-3);line-height:1.55}.sidebar-formula code{font-family:JetBrains Mono,monospace;font-size:10.5px;color:var(--copper);background:var(--copper-soft);padding:2px 5px;border-radius:3px;letter-spacing:.02em}.sidebar-controls{padding:14px 28px;border-bottom:1px solid var(--line);display:flex;gap:8px;align-items:center}.sidebar-controls .search{flex:1;position:relative}.sidebar-controls .search input{width:100%;padding:8px 12px 8px 30px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);font-size:12.5px;color:var(--ink);font-family:JetBrains Mono,monospace}.sidebar-controls .search input:focus{outline:none;border-color:var(--copper)}.sidebar-controls .search:before{content:"";position:absolute;left:10px;top:50%;transform:translateY(-50%);width:10px;height:10px;border:1.4px solid var(--ink-3);border-radius:50%}.sidebar-controls .search:after{content:"";position:absolute;left:18px;top:50%;width:5px;height:1.4px;background:var(--ink-3);transform:rotate(45deg) translateY(2px)}.sidebar-controls select{padding:8px 26px 8px 10px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);font-size:11.5px;color:var(--ink-2);font-family:Inter,sans-serif;appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23b5651d' stroke-width='1.4' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}.sidebar-list{flex:1;overflow-y:auto;padding:6px 16px 6px 28px;min-height:0}.sidebar-empty{padding:32px 12px;text-align:center;font-size:12.5px;color:var(--ink-3);font-style:italic}.sku-row{display:flex;align-items:center;gap:10px;padding:8px 12px 8px 0;border-bottom:1px solid var(--line);font-family:JetBrains Mono,monospace}.sku-row:last-child{border-bottom:none}.sku-row-num{font-size:10px;color:var(--ink-3);min-width:22px;text-align:right}.sku-row-val{flex:1;font-size:12.5px;color:var(--ink);letter-spacing:.01em;word-break:break-all;line-height:1.4}.sku-row-val mark{background:#b5651d38;color:inherit;padding:0 1px;border-radius:2px}.sku-row-copy{padding:4px 6px;border-radius:3px;color:var(--ink-3);font-size:11px;opacity:0;transition:opacity .15s,background .12s,color .12s}.sku-row:hover .sku-row-copy{opacity:1}.sku-row-copy:hover{background:var(--copper-soft);color:var(--copper)}.sku-row-copy.ok{color:var(--ok);opacity:1}.sidebar-foot{padding:18px 28px 22px;border-top:1px solid var(--line);display:grid;gap:8px}.sf-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}.btn{padding:12px 14px;font-size:12px;letter-spacing:.06em;text-transform:uppercase;border-radius:var(--r);font-weight:500;transition:all .15s;border:1px solid transparent;display:flex;align-items:center;justify-content:center;gap:6px}.btn-primary{background:var(--copper);color:#fff}.btn-primary:hover{background:var(--copper-deep)}.btn-primary:disabled{background:var(--ink-3);opacity:.4;cursor:not-allowed}.btn-primary.ok{background:var(--ok)}.btn-ghost{background:transparent;color:var(--copper);border-color:var(--copper)}.btn-ghost:hover{background:var(--copper-soft)}.btn-ghost:disabled{color:var(--ink-3);border-color:var(--line-2);cursor:not-allowed}.btn-text{font-size:11px;color:var(--ink-3);padding:6px;letter-spacing:.06em;text-transform:uppercase;text-align:center}.btn-text:hover{color:var(--copper)}.sidebar-contact{display:block;margin-top:6px;padding:10px 6px 2px;text-align:center;font-family:Cormorant Garamond,serif;font-style:italic;font-size:13.5px;color:var(--ink-3);text-decoration:none;border-top:1px solid var(--line);transition:color .12s}.sidebar-contact span{font-family:JetBrains Mono,monospace;font-style:normal;font-size:11.5px;color:var(--copper);letter-spacing:.01em;margin-left:4px}.sidebar-contact:hover{color:var(--ink)}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%) translateY(20px);padding:10px 20px;background:var(--ink);color:var(--bg);border-radius:99px;font-size:12.5px;letter-spacing:.04em;opacity:0;transition:opacity .2s,transform .2s;pointer-events:none;z-index:100}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:1100px){.main{grid-template-columns:1fr}.sidebar{position:relative;height:auto;border-left:none;border-top:1px solid var(--line);top:auto}}@media(max-width:720px){.builder{padding:24px}.topbar{padding:14px 20px}.hero h1{font-size:32px}}