:root{--navy:#123b61;--blue:#1768a9;--light:#f3f7fa;--line:#d8e1e8;--text:#263746;--muted:#6b7c89;--red:#b73535;--green:#25835d;--radius:14px}*{box-sizing:border-box}body{margin:0;background:var(--light);color:var(--text);font-family:"Meiryo UI",Meiryo,"Yu Gothic UI","Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif;line-height:1.7}.container{width:min(1120px,calc(100% - 32px));margin:auto}.site-header{height:72px;display:flex;align-items:center;background:#fff;border-bottom:1px solid var(--line)}.brand{font-size:22px;font-weight:800;color:var(--navy)}.header-note{margin-left:18px;padding-left:18px;border-left:1px solid var(--line);color:var(--muted)}main{padding:34px 0 70px}.steps{display:grid;grid-template-columns:repeat(4,1fr);list-style:none;padding:0;margin:0 0 26px;counter-reset:step}.steps li{position:relative;text-align:center;color:#86949e;font-size:14px;padding-top:38px}.steps li:before{counter-increment:step;content:counter(step);position:absolute;z-index:2;top:0;left:50%;transform:translateX(-50%);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#dfe6eb;color:#697984;font-weight:700}.steps li:after{content:"";position:absolute;top:14px;left:-50%;width:100%;height:2px;background:#dfe6eb}.steps li:first-child:after{display:none}.steps .active{color:var(--navy);font-weight:700}.steps .active:before{background:var(--blue);color:#fff}.steps .done:before{content:"✓";background:var(--green);color:#fff}.steps .done:after,.steps .active:after{background:var(--green)}.card{background:#fff;padding:38px;border:1px solid #e3e9ed;border-radius:var(--radius);box-shadow:0 8px 26px rgba(20,54,78,.07)}.card.narrow{max-width:850px;margin:auto}h1{margin:0 0 8px;color:var(--navy);font-size:28px}h2{font-size:20px;color:var(--navy);margin:34px 0 14px;border-left:4px solid var(--blue);padding-left:12px}p{color:var(--muted)}.alert{margin:20px 0;padding:13px 16px;border-radius:8px;background:#fff1f1;border:1px solid #efbcbc;color:var(--red)}.product-table-wrap{overflow-x:auto;margin-top:24px}.product-table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px;border:1px solid var(--line);border-radius:10px;overflow:hidden}.product-table th{background:#eaf1f6;color:var(--navy);font-size:14px;text-align:left}.product-table th,.product-table td{padding:13px;border-bottom:1px solid var(--line)}.product-table tr:last-child td{border-bottom:0}.product-table tr.selected td{background:#f4f9fd}.product-table th:nth-last-child(-n+3),.product-table td:nth-last-child(-n+3){text-align:center}select,input{width:100%;min-height:45px;padding:9px 11px;border:1px solid #bdcbd5;border-radius:7px;background:#fff;color:var(--text);font:inherit}select:focus,input:focus{outline:3px solid rgba(23,104,169,.15);border-color:var(--blue)}select.invalid{border-color:var(--red);background:#fff4f4}.qty{width:76px;text-align:center}.line-total{white-space:nowrap;font-weight:700}.summary-bar{display:flex;justify-content:flex-end;align-items:baseline;gap:28px;padding:20px 14px;border-bottom:1px solid var(--line)}.summary-bar strong{font-size:26px;color:var(--navy)}.actions{display:flex;justify-content:space-between;gap:16px;margin-top:30px}.actions.end{justify-content:flex-end}.btn{display:inline-flex;align-items:center;justify-content:center;min-width:180px;min-height:52px;padding:11px 25px;border:0;border-radius:8px;font:inherit;font-weight:700;text-decoration:none;cursor:pointer}.btn.primary{background:var(--blue);color:#fff;box-shadow:0 5px 14px rgba(23,104,169,.2)}.btn.primary:hover{background:#0f568f}.btn.secondary{background:#e9eef2;color:var(--text)}.btn:disabled{opacity:.6;cursor:wait}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;margin-top:28px}.field{display:flex;flex-direction:column;gap:7px}.field.wide,.actions.wide{grid-column:1/-1}.field>span{font-weight:700}.field em{font-style:normal;font-size:11px;background:var(--red);color:#fff;border-radius:3px;padding:2px 5px;margin-left:7px}.field small{color:var(--muted);font-weight:400;margin-left:7px}.totals{display:flex;justify-content:flex-end}.totals dl{width:min(390px,100%);display:grid;grid-template-columns:1fr 1fr;margin:18px 0}.totals dt,.totals dd{margin:0;padding:9px 14px;border-bottom:1px solid var(--line)}.totals dd{text-align:right}.totals .total{font-size:20px;font-weight:800;color:var(--navy);border-bottom:2px solid var(--navy)}.confirm-list{display:grid;grid-template-columns:230px 1fr;border-top:1px solid var(--line);margin:0}.confirm-list dt,.confirm-list dd{padding:12px 16px;margin:0;border-bottom:1px solid var(--line)}.confirm-list dt{background:#f2f6f8;font-weight:700}.success{text-align:center;max-width:760px;margin:auto}.success .check{width:70px;height:70px;margin:0 auto 16px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:#fff;font-size:38px}.success dl{display:grid;grid-template-columns:1fr 1fr;max-width:480px;margin:25px auto;border-top:1px solid var(--line)}.success dt,.success dd{margin:0;padding:12px;border-bottom:1px solid var(--line)}.success dt{text-align:left;background:#f2f6f8;font-weight:700}.success dd{text-align:right}@media(max-width:700px){.container{width:min(100% - 20px,1120px)}.site-header{height:62px}.header-note{display:none}main{padding-top:24px}.steps li{font-size:11px}.card{padding:22px 16px}h1{font-size:23px}.form-grid{grid-template-columns:1fr}.field.wide,.actions.wide{grid-column:auto}.confirm-list{grid-template-columns:1fr}.confirm-list dt{padding-bottom:4px;border-bottom:0}.confirm-list dd{padding-top:4px}.actions{flex-direction:column-reverse}.btn{width:100%}.summary-bar{justify-content:space-between;gap:10px}.summary-bar strong{font-size:21px}}