*{box-sizing:border-box} :root{--bg:#eee5d8;--ink:#403630;--cocoa:#574137;--line:#cfbfac;--muted:#77695f;--paper:#f7f1e8;--green:#426049}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 "Microsoft JhengHei",system-ui,sans-serif}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}[hidden]{display:none!important}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #977156;outline-offset:4px}button{border:0}h1,h2,h3,p{margin:0}h1{font-family:"Yu Mincho","PMingLiU",serif;font-weight:400;font-size:clamp(30px,3.4vw,48px);line-height:1.55;letter-spacing:.05em}h2{font-size:22px;font-weight:500}h3{font-size:17px;font-weight:500}.preview-note{text-align:center;background:#dfd3c2;font-size:12px;letter-spacing:.05em;padding:8px 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.section-head{padding-bottom:20px}.empty-hint{font-size:12px;color:var(--muted);padding-block:15px}footer{margin-top:34px;border-top:1px solid var(--line);padding:24px 0 30px;display:flex;justify-content:space-between;gap:15px;font-size:11px;color:var(--muted)}#owner{padding-top:38px}.quiet-button{min-height:44px;border:1px solid var(--line);border-radius:6px;padding:8px 14px;background:transparent;color:var(--cocoa);font-size:13px}.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:28px 0;border-block:1px solid var(--line)}.stats>div{padding:18px 20px}.stats>div+div{border-left:1px solid var(--line)}.stats span{display:block;font-size:12px;color:var(--muted)}.stats strong{display:block;font-size:26px;font-weight:400;margin-top:4px}.checkout-layout{display:grid;grid-template-columns:1fr .85fr;gap:40px;align-items:start}form{background:var(--paper);padding:28px;border-radius:12px;border:1px solid var(--line)}label{display:block;font-size:13px;color:var(--muted);margin:18px 0 7px}input,select{width:100%;min-width:0;min-height:48px;padding:10px 13px;border:1px solid var(--line);border-radius:5px;background:transparent;color:var(--ink)}.input-wrap{position:relative}.input-wrap span{position:absolute;top:12px;left:14px;color:var(--muted);font-size:14px}.input-wrap input{padding-left:55px}.presets{display:flex;gap:8px;margin-top:10px}.presets button{flex:1;min-height:44px;padding:6px 8px;font-size:13px;background:#e9dfd1;color:var(--cocoa);border-radius:5px}.calculation{border-top:1px solid var(--line);margin-top:24px;padding-top:14px}.calculation>div{display:flex;justify-content:space-between;gap:14px;padding:6px 0;font-size:14px}.calculation strong{font-weight:500}.calculation>div:nth-child(2){font-size:20px;color:var(--cocoa)}.primary{width:100%;min-height:50px;padding:12px 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