:root{--ink:#173d35;--muted:#56675f;--paper:#f6f5ef;--line:#d8ded3;--lime:#d6ec9a}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif}a{color:inherit}header{max-width:1180px;margin:auto;padding:25px 32px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{text-decoration:none;font-size:26px;font-weight:800;letter-spacing:.05em}.brand span{display:block;font-size:9px;letter-spacing:.15em}nav{display:flex;gap:25px}nav a{text-decoration:none;font-size:14px}nav a[aria-current]{border-bottom:2px solid var(--ink)}main{max-width:1180px;margin:auto;padding:52px 32px 80px}h1{font-size:clamp(32px,4.5vw,55px);line-height:1.3;letter-spacing:-.035em;margin:12px 0 24px}h2{font-size:27px;line-height:1.4}h3{font-size:23px;line-height:1.5}.lead{font-size:18px;color:var(--muted);max-width:750px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:64px;align-items:center;padding:32px 0 70px}.button{display:inline-block;background:var(--ink);color:white;border:1px solid var(--ink);padding:13px 22px;text-decoration:none;border-radius:7px;font-size:16px;font-weight:650;cursor:pointer}.hero .button{margin-top:15px}.muted,small{color:var(--muted);font-size:13px}.receipt{background:#fffdf6;box-shadow:0 12px 40px #173d3510;padding:27px 30px;border-top:5px solid var(--ink);transform:rotate(2deg)}.receipt small{display:block}.receipt div{display:flex;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:14px}.receipt-total{flex-direction:column}.receipt strong{font-size:42px}.receipt>p:last-child{font-size:12px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{display:block;border:1px solid var(--line);background:#fff;padding:27px;text-decoration:none;border-radius:10px}.card:hover{border-color:var(--ink);transform:translateY(-2px)}.card span{font-size:12px}.card p{color:var(--muted);font-size:15px;min-height:76px}.card b{font-size:14px}.banner{display:flex;align-items:center;justify-content:space-between;gap:25px;background:var(--lime);padding:30px 36px;margin-top:55px;border-radius:10px}.secondary{background:transparent;color:var(--ink);white-space:nowrap}.notice{background:#eeefdf;border-left:3px solid #738042;padding:15px 20px;margin:25px 0;color:#49522c;font-size:14px}.workspace{display:grid;grid-template-columns:1.5fr 1fr;gap:25px;align-items:start}form{padding:25px;background:white;border:1px solid var(--line);border-radius:10px}.form-head{display:flex;justify-content:space-between;align-items:center;gap:15px}.form-head h2{font-size:21px}.fields{display:grid;grid-template-columns:1fr 1fr;gap:20px}label{font-size:14px;font-weight:600}input,select{display:block;width:100%;padding:12px;border:1px solid #a8b5aa;border-radius:5px;margin:6px 0;font:inherit;color:var(--ink);background:#fff}label small{font-weight:400;display:block;line-height:1.5}button{font:inherit;cursor:pointer;color:var(--ink);background:transparent;border:1px solid #9bab9b;border-radius:5px;padding:8px 12px}button:hover{filter:brightness(.9)}.actions{display:flex;gap:10px;margin-top:25px}.result{background:var(--ink);color:white;padding:28px;border-radius:10px;position:sticky;top:20px}.result .eyebrow{color:var(--lime)}.result strong{font-size:38px;display:block;line-height:1.4;margin:15px 0}.result dl div{display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid #ffffff30;padding:8px 0;font-size:14px}.result dd{margin:0}.result button{color:white;border-color:#ffffff80;width:100%;margin-top:20px}.error{color:#ffdbb0}.negative{color:#ffdbb0}.method{margin-top:40px;max-width:820px}.method p,article p{color:var(--muted)}article{max-width:820px}article h2{margin-top:35px}footer{border-top:1px solid var(--line);padding:36px max(24px,calc((100% - 1116px)/2));font-size:13px;color:var(--muted)}footer b{font-size:20px;color:var(--ink)}.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:white;padding:10px;z-index:10}:focus-visible{outline:3px solid #9c6a1d;outline-offset:3px}[hidden]{display:none!important}@media(max-width:760px){header{padding:18px 20px;flex-wrap:wrap}nav{gap:20px}main{padding:30px 20px 55px}.hero{grid-template-columns:1fr;gap:30px;padding:10px 0 40px}.receipt{transform:none}.cards,.workspace{grid-template-columns:1fr}.fields{grid-template-columns:1fr}.result{position:static}.banner{align-items:start;flex-direction:column;padding:25px}.card p{min-height:0}h2{font-size:24px}.brand{font-size:23px}nav a{font-size:13px}.result strong{font-size:34px}}

.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:12px;margin:0 0 30px}.breadcrumbs a{font-size:12px}.home-guides{margin-top:60px}.home-guides .card h3{font-size:22px}.related{margin-top:35px;padding:24px;background:#e9eedf;border-radius:10px}.formula{padding:20px;background:#e9eedf;border-radius:8px;line-height:1.9;overflow-wrap:anywhere}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:15px;background:white}th,td{text-align:left;border-bottom:1px solid var(--line);padding:12px 15px}caption{text-align:left;font-size:13px;color:var(--muted);padding:8px 0}article li{margin-bottom:10px}article .banner{display:block}article .banner a{margin-top:10px}article h1{font-size:clamp(30px,4vw,48px)}.home-guides h2{margin-bottom:12px}nav{flex-wrap:wrap}@media(max-width:760px){nav{gap:16px}header{gap:16px}.breadcrumbs{margin-bottom:22px}.card h2{font-size:23px}}

/* product-v1 */
.product-page{max-width:100%}.product-page>p,.product-page>ul,.product-page>ol{max-width:850px}.product-preview{margin:32px 0;background:white;border:1px solid var(--line);border-radius:10px;padding:12px}.product-preview img{width:100%;height:auto;display:block}.product-preview figcaption{font-size:13px;color:var(--muted);padding:10px}.offer-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.offer{border:1px solid var(--line);background:white;border-radius:12px;padding:28px}.offer h2{margin:8px 0}.offer-price{font-size:34px;font-weight:750}.offer li{margin-bottom:10px}.offer-price small{font-weight:400}@media(max-width:760px){.offer-grid{grid-template-columns:1fr}.product-preview{padding:5px}.offer{padding:22px}}