*{box-sizing:border-box}
html{font-family:"DM Sans",sans-serif;color:var(--ink);background:#ecefe9}
body{margin:0;min-width:320px}
.site-header{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:relative;z-index:3}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;letter-spacing:.08em;font-size:14px}
.brand-logo{display:block;width:44px;height:44px;object-fit:contain}
.header-meta{font-size:12px;color:var(--muted)}
.step-dot{width:7px;height:7px;background:#4f9e72;border-radius:50%;display:inline-block;margin-right:7px}
.icon-button{border:1px solid var(--line);background:#fff;border-radius:50%;width:34px;height:34px;color:var(--muted);cursor:pointer}
.app-shell{--config-width:15vw;--summary-width:15vw;display:grid;grid-template-columns:var(--config-width) 12px minmax(320px,1fr) 12px var(--summary-width);min-height:calc(100vh - 72px)}
.config-panel,.summary-panel{background:#fff;padding:34px 30px;overflow:auto}
.config-panel{border-right:1px solid var(--line)}
.summary-panel{border-left:1px solid var(--line)}
.panel-resizer{position:relative;z-index:4;background:#e9ece6;cursor:col-resize;touch-action:none;outline:none;transition:background .15s}
.panel-resizer::before{content:"";position:absolute;top:0;bottom:0;left:5px;width:2px;background:#c2cbc4;transition:background .15s,box-shadow .15s}
.panel-resizer:hover,.panel-resizer:focus-visible,.panel-resizer.dragging{background:#dce7e0}
.panel-resizer:hover::before,.panel-resizer:focus-visible::before,.panel-resizer.dragging::before{background:var(--green);box-shadow:0 0 0 2px rgba(47,102,81,.12)}
body.panel-resizing{cursor:col-resize;user-select:none}
@media print{.panel-resizer{display:none!important}}
.eyebrow{font-size:10px;letter-spacing:.19em;font-weight:700;color:var(--orange);margin:0 0 10px}
.intro h1{font-family:Lora,serif;font-size:28px;line-height:1.22;margin:0 0 12px;font-weight:600}
.intro h1 em{color:var(--green2);font-weight:600}
.intro>p:last-child{font-size:12px;line-height:1.55;color:var(--muted);margin-bottom:24px}
.config-section{border-top:1px solid var(--line)}
.config-section:last-child{border-bottom:1px solid var(--line)}
.section-title{width:100%;border:0;background:none;padding:17px 0;display:flex;align-items:center;gap:11px;font:600 13px "DM Sans";color:var(--ink);cursor:pointer;text-align:left}
.section-title span{color:var(--orange);font-size:10px;letter-spacing:.08em}
.section-title b{margin-left:auto;font-size:17px;font-weight:400}
.section-content{padding:0 0 19px}
.config-section:not(.open) .section-content{display:none}
.field-label{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.09em;font-weight:700;color:var(--muted);margin:13px 0 7px}
select,input[type=text],input[type=number],.input-count input{width:100%;border:1px solid #ccd3ce;border-radius:7px;background:#fff;padding:10px 11px;font:500 12px "DM Sans";color:var(--ink);outline:none}
select:focus,input:focus{border-color:var(--green2);box-shadow:0 0 0 3px rgba(47,102,81,.12)}
.material-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.material{border:1px solid #d5dbd6;border-radius:8px;padding:8px;display:flex;align-items:center;gap:8px;background:#fff;text-align:left;cursor:pointer}
.material.active{border-color:var(--green);box-shadow:0 0 0 1px var(--green)}
.material-swatch{width:29px;height:29px;border-radius:5px;flex:none}
.material-swatch.natural{background:repeating-linear-gradient(83deg,#d6b985 0,#e8d4ab 5px,#cfae78 9px)}
.material-swatch.black{background:linear-gradient(145deg,#30332f,#0d0f0e)}
.material b,.material small{display:block;font-size:11px}
.material small{font-size:9px;color:var(--muted);margin-top:2px}
.input-count{position:relative}
.input-count input{padding-right:46px}
.input-count small{position:absolute;right:10px;top:11px;color:#939b96;font-size:9px}
.icon-pool{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}
.icon-choice{height:47px;border:1px solid #d5dbd6;border-radius:7px;background:#fff;color:var(--green);cursor:pointer}
.icon-choice.active{border-color:var(--green);background:#eff5f1}
.icon-choice svg{width:42px;height:28px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.two-fields{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.range-label{display:flex;justify-content:space-between;font-size:10px;text-transform:uppercase;letter-spacing:.06em;font-weight:700;color:var(--muted);margin:14px 0 5px}
.range-label output{color:var(--ink)}
input[type=range]{width:100%;accent-color:var(--green)}
.check-row{display:flex;align-items:flex-start;gap:9px;margin-top:15px;font-size:10px;cursor:pointer}
.check-row input{accent-color:var(--green);margin-top:2px}
.check-row b,.check-row small{display:block}
.check-row small{color:var(--muted);margin-top:2px}
.preview-area{background:#e9ece6;padding:24px 36px;display:flex;min-width:0;flex-direction:column}
.preview-toolbar{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:10px;letter-spacing:.05em}
.live-badge{color:var(--green);font-weight:700;margin-right:14px}
.live-badge i{display:inline-block;width:6px;height:6px;background:#4e9b70;border-radius:50%;margin-right:5px}
.zoom-controls{display:flex;align-items:center;background:rgba(255,255,255,.8);border:1px solid #d7ddd7;border-radius:6px;overflow:hidden}
.zoom-controls button{border:0;background:transparent;width:29px;height:27px;cursor:pointer}
.zoom-controls span{font-size:9px;width:43px;text-align:center}
.stage{position:relative;flex:1;min-height:520px;display:grid;place-items:center;padding:32px 42px}
.board{position:relative;aspect-ratio:2/3;height:min(68vh,610px);max-width:92%;border-radius:2px;box-shadow:var(--shadow);overflow:hidden;transition:transform .2s,background .2s;color:#4b2f1c}
.board.natural{background-color:#ddc397;background-image:linear-gradient(94deg,rgba(105,65,30,.05),transparent 15%,rgba(255,255,255,.16) 24%,transparent 42%,rgba(91,55,26,.04) 67%,transparent),repeating-linear-gradient(4deg,transparent 0 32px,rgba(82,52,29,.035) 33px,transparent 35px)}
.board.black{background:#20231f;color:#d7a873;background-image:radial-gradient(rgba(255,255,255,.06) .7px,transparent .7px);background-size:4px 4px}
.board-header{position:absolute;left:9%;right:9%;top:7%;height:16%;display:flex;align-items:center;justify-content:center;gap:5%}
.board-title{text-align:center;font-size:clamp(12px,1.35vw,24px);font-weight:700;letter-spacing:.045em;line-height:1.12;overflow-wrap:anywhere}
.board-title.serif{font-family:Lora,serif;letter-spacing:0}
.board-title.script{font-family:Lora,serif;font-style:italic;letter-spacing:0}
.board-icon{width:18%;flex:none}
.board-icon svg{width:100%;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hole-grid{position:absolute;left:11%;right:11%;top:25%;bottom:12%;display:grid;align-items:center;justify-items:center}
.badge-hole{background:currentColor;border-radius:50%;width:4px;height:4px;box-shadow:inset 0 1px 1px rgba(0,0,0,.4)}
.board-footer{position:absolute;bottom:5%;left:0;right:0;text-align:center;font-size:6px;letter-spacing:.18em;opacity:.65}
.mount-hole{position:absolute;width:6px;height:6px;border-radius:50%;background:currentColor}
.mount-hole.tl{left:4%;top:3%}.mount-hole.tr{right:4%;top:3%}.mount-hole.bl{left:4%;bottom:3%}.mount-hole.br{right:4%;bottom:3%}
.measure{position:absolute;font-size:9px;color:#7b837e;letter-spacing:.04em}
.measure-x{bottom:16px;left:50%;transform:translateX(-50%)}
.measure-y{right:9px;top:50%;transform:rotate(90deg) translateY(-50%);transform-origin:center}
.preview-note{text-align:center;font-size:9px;color:#818a84;margin:0}
.summary-panel h2{font-family:Lora,serif;font-size:25px;margin:0 0 22px}
.summary-list{margin:0}
.summary-list div{display:flex;justify-content:space-between;gap:15px;padding:11px 0;border-bottom:1px solid var(--line);font-size:11px}
.summary-list dt{color:var(--muted)}
.summary-list dd{margin:0;text-align:right;font-weight:600}
.price-block{margin:21px 0 17px}
.price-block span,.price-block small{display:block;color:var(--muted);font-size:10px}
.price-block strong{display:block;font-family:Lora,serif;font-size:32px;margin:3px 0}
.primary-button,.secondary-button{width:100%;padding:13px;border-radius:7px;font:600 11px "DM Sans";cursor:pointer}
.primary-button{border:0;background:var(--green);color:#fff;display:flex;justify-content:center;gap:13px}
.primary-button:hover{background:#235443}
.secondary-button{margin-top:8px;border:1px solid var(--green);background:#fff;color:var(--green)}
.secure-note{text-align:center;color:var(--muted);font-size:8px;margin:9px 0 22px}
.delivery{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 0;display:flex;gap:10px;align-items:center}
.delivery>span{font-size:20px;color:var(--orange)}
.delivery b,.delivery small{display:block;font-size:10px}
.delivery small{font-size:9px;color:var(--muted);margin-top:3px}
.microcopy{font-size:9px;line-height:1.5;color:var(--muted)}
dialog{max-width:420px;border:0;border-radius:12px;padding:30px;box-shadow:var(--shadow);font-size:13px;line-height:1.6}
dialog::backdrop{background:rgba(16,25,21,.55)}
.dialog-close{float:right;border:0;background:none;font-size:22px;cursor:pointer}
@media(max-width:1050px){
  .app-shell{grid-template-columns:var(--config-width) 12px minmax(320px,1fr)}
  .panel-resizer-right{display:none}
  .summary-panel{grid-column:1/-1;border-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
  .summary-panel>.eyebrow,.summary-panel>h2{grid-column:1}
  .summary-list{grid-column:1;grid-row:3/8}
  .price-block,.primary-button,.secondary-button,.secure-note{grid-column:2}
  .delivery,.microcopy{grid-column:1/-1}
  .preview-area{min-height:690px}
}
@media(max-width:720px){
  .site-header{height:60px;padding:0 16px}
  .brand-logo{width:38px;height:38px}
  .header-meta{display:none}
  .app-shell{display:block}
  .panel-resizer{display:none}
  .config-panel,.summary-panel{padding:26px 20px}
  .preview-area{min-height:580px;padding:19px 13px}
  .stage{min-height:470px;padding:25px}
  .board{height:min(65vh,500px)}
  .summary-panel{display:block}
  .summary-list{margin-bottom:15px}
  .intro h1{font-size:25px}
}