:root { --navy:#063898; --navy-dark:#052b70; --blue:#0879c9; --sky:#eaf3ff; --pale:#f5f8fc; --orange:#f47a2d; --red:#ef3548; --ink:#172033; --muted:#596579; --line:#d7e1ef; --white:#fff; --shadow:0 18px 45px rgba(3,36,102,.1); }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; color:var(--ink); font-family:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif; line-height:1.65; background:linear-gradient(180deg,#f4f8ff 0,#fff 720px); }
button,input { font:inherit; }
button { cursor:pointer; }
.calc-header { height:72px; display:flex; justify-content:space-between; align-items:center; padding:0 max(5vw,24px); background:rgba(255,255,255,.96); border-bottom:1px solid var(--line); }
.brand { display:inline-flex; align-items:center; gap:12px; color:#231f20; font-weight:800; letter-spacing:.025em; text-decoration:none; }
.brand-mark { width:200px; height:100px; }
.close-link { color:var(--navy); font-weight:800; }
main { padding:64px max(5vw,20px) 96px; }
.calc-intro,.summary-bar,.product-panel,.selection-summary,.plan-table,.return-panel { max-width:1100px; margin-left:auto; margin-right:auto; }
.calc-intro { margin-bottom:36px; }
.eyebrow,.step-label { margin:0 0 8px; color:var(--blue); font-size:.78rem; font-weight:900; letter-spacing:.1em; }
h1,h2,h3,p { margin-top:0; }
h1 { max-width:900px; margin-bottom:18px; color:var(--navy); font-size:clamp(2.15rem,5vw,4.45rem); line-height:1.13; letter-spacing:-.04em; }
.calc-intro > p:last-child { max-width:780px; margin-bottom:0; color:var(--muted); font-size:1.05rem; }

.summary-bar { position:sticky; top:12px; z-index:20; display:grid; grid-template-columns:1.05fr .8fr 1fr auto; gap:22px; align-items:center; margin-bottom:28px; padding:18px 22px; color:#fff; background:linear-gradient(120deg,var(--navy-dark),var(--navy)); border-radius:16px; box-shadow:0 16px 38px rgba(3,36,102,.25); }
.summary-main { display:flex; align-items:center; gap:16px; }
.summary-kicker { color:#bfd7fa; font-size:.78rem; font-weight:800; }
.summary-points { display:flex; align-items:baseline; gap:5px; }
.summary-points strong { font-size:2.8rem; line-height:1; }
.summary-points span { font-weight:900; }
.summary-stats { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin:0; }
.summary-stats div { padding:7px 10px; background:rgba(255,255,255,.1); border-radius:8px; }
.summary-stats dt { color:#bfd7fa; font-size:.66rem; }
.summary-stats dd { margin:0; font-weight:900; }
.summary-plan { display:grid; grid-template-columns:auto 1fr; gap:1px 9px; align-items:center; }
.plan-badge { grid-row:1/3; display:grid; place-items:center; min-width:64px; min-height:40px; padding:6px 10px; color:var(--navy); background:#fff; border-radius:999px; font-size:.8rem; font-weight:900; }
.summary-plan strong { font-size:1.25rem; }
.summary-plan small { color:#bfd7fa; font-size:.66rem; }
.consult-button { display:grid; place-items:center; min-height:46px; padding:0 16px; color:var(--navy); background:#fff; border-radius:8px; text-decoration:none; font-weight:900; white-space:nowrap; }

.product-panel,.selection-summary,.plan-table { padding:34px; background:#fff; border:1px solid var(--line); border-radius:18px; box-shadow:var(--shadow); }
.panel-heading,.selection-heading { display:flex; justify-content:space-between; align-items:end; gap:24px; margin-bottom:24px; }
.panel-heading h2,.selection-heading h2,.plan-table h2 { margin-bottom:5px; color:var(--navy); font-size:clamp(1.55rem,3vw,2.2rem); }
.panel-heading p:last-child,.selection-heading p { margin-bottom:0; color:var(--muted); }
.clear-all { min-height:42px; padding:0 15px; color:var(--navy); background:var(--sky); border:0; border-radius:8px; font-weight:800; white-space:nowrap; }
.clear-all:disabled { opacity:.45; cursor:not-allowed; }
.filter-bar { display:grid; grid-template-columns:1fr auto; gap:16px; align-items:end; margin-bottom:22px; padding:20px; background:var(--pale); border-radius:12px; }
.search-field span { display:block; margin-bottom:6px; color:var(--navy); font-size:.82rem; font-weight:900; }
.search-field input { width:100%; min-height:50px; padding:0 15px; border:2px solid #a9bad4; border-radius:8px; outline:none; }
.search-field input:focus { border-color:var(--blue); box-shadow:0 0 0 4px rgba(8,121,201,.12); }
.selected-filter { display:flex; align-items:center; gap:8px; min-height:50px; padding:0 15px; color:var(--navy); background:#fff; border:1px solid var(--line); border-radius:8px; font-weight:800; white-space:nowrap; }
.selected-filter input { width:18px; height:18px; accent-color:var(--navy); }
.column-guide { display:grid; grid-template-columns:minmax(240px,1fr) 82px 118px 90px; gap:12px; padding:0 18px 8px 56px; color:var(--muted); font-size:.72rem; font-weight:800; text-align:center; }
.column-guide span:first-child { text-align:left; }
.category-list { display:grid; gap:12px; }
.category-group { overflow:hidden; border:1px solid var(--line); border-radius:12px; background:#fff; }
.category-group summary { position:relative; display:flex; align-items:center; gap:12px; padding:16px 20px; color:var(--navy); background:#edf3fb; font-size:1.02rem; font-weight:900; cursor:pointer; list-style:none; }
.category-group summary::-webkit-details-marker { display:none; }
.category-group summary::before { content:"＋"; display:grid; place-items:center; width:26px; height:26px; color:#fff; background:var(--navy); border-radius:50%; font-size:.9rem; }
.category-group[open] summary::before { content:"−"; }
.category-count { margin-left:auto; padding:3px 9px; color:var(--muted); background:#fff; border-radius:999px; font-size:.72rem; }
.product-list { padding:4px 18px 10px; }
.product-row { display:grid; grid-template-columns:26px minmax(240px,1fr) 82px 118px 90px; gap:12px; align-items:center; min-height:70px; padding:11px 4px; border-bottom:1px solid var(--line); }
.product-row:last-child { border-bottom:0; }
.product-row.is-selected { margin:0 -8px; padding-left:12px; padding-right:12px; background:#f0f6ff; border-radius:8px; }
.product-check { width:20px; height:20px; accent-color:var(--navy); }
.product-name strong,.product-name small { display:block; }
.product-name strong { line-height:1.45; }
.product-name small { color:var(--muted); }
.product-points,.product-subtotal { color:var(--navy); text-align:center; font-weight:900; }
.qty-wrap { display:grid; grid-template-columns:32px 50px 32px; gap:2px; justify-content:center; }
.qty-wrap button { height:38px; color:var(--navy); background:#fff; border:1px solid #a9bad4; font-size:1.1rem; font-weight:900; }
.qty-wrap button:first-child { border-radius:7px 0 0 7px; }
.qty-wrap button:last-child { border-radius:0 7px 7px 0; }
.qty-wrap input { width:50px; height:38px; padding:0 3px; text-align:center; border:1px solid #a9bad4; border-radius:0; }
.qty-wrap input:disabled,.qty-wrap button:disabled { color:#9ba5b4; background:#edf0f4; border-color:#dce2ea; cursor:not-allowed; }
.no-results { padding:38px 18px; color:var(--muted); text-align:center; border:2px dashed var(--line); border-radius:12px; }

.selection-summary { margin-top:28px; }
.selection-list { display:grid; gap:8px; }
.selection-row { display:grid; grid-template-columns:minmax(0,1fr) auto auto; gap:20px; align-items:center; padding:13px 16px; background:var(--pale); border-radius:9px; }
.selection-row small { display:block; color:var(--muted); }
.selection-row span,.selection-row strong { white-space:nowrap; }
.selection-empty { padding:28px; color:var(--muted); text-align:center; border:2px dashed var(--line); border-radius:10px; }
.selection-empty[hidden] { display:none; }
.selection-total { display:flex; justify-content:flex-end; align-items:baseline; gap:18px; margin-top:18px; padding-top:18px; border-top:2px solid var(--navy); color:var(--navy); font-weight:900; }
.selection-total b { color:var(--red); font-size:2rem; }

.plan-table { margin-top:28px; }
.plan-grid { display:grid; grid-template-columns:repeat(7,1fr); gap:8px; }
.plan-grid article { display:grid; gap:4px; padding:16px 10px; text-align:center; background:var(--pale); border-radius:9px; }
.plan-grid strong { width:34px; height:34px; margin:auto; display:grid; place-items:center; color:#fff; background:var(--navy); border-radius:50%; }
.plan-grid span { color:var(--muted); font-size:.75rem; }
.plan-grid b { color:var(--navy); font-size:.88rem; }
.table-note { margin:20px 0 8px; color:var(--muted); font-size:.82rem; }
.pdf-link { color:var(--navy); font-weight:800; }
.return-panel { display:grid; grid-template-columns:1fr auto; gap:32px; align-items:center; margin-top:28px; padding:32px 34px; color:#fff; background:linear-gradient(120deg,var(--navy-dark),var(--navy)); border-radius:18px; box-shadow:var(--shadow); }
.return-panel h2 { margin-bottom:6px; font-size:clamp(1.35rem,2.6vw,1.9rem); }
.return-panel p:last-child { margin-bottom:0; color:#dce8ff; }
.return-panel .step-label { color:#9dccff; }
.return-button { display:inline-flex; align-items:center; justify-content:center; min-height:54px; padding:0 22px; color:var(--navy); background:#fff; border-radius:9px; text-decoration:none; font-weight:900; white-space:nowrap; transition:transform .2s,box-shadow .2s; }
.return-button:hover { transform:translateY(-2px); box-shadow:0 12px 24px rgba(0,0,0,.18); }

@media(max-width:900px){
  .summary-bar { top:8px; grid-template-columns:1fr 1fr; }
  .summary-plan { justify-self:end; }
  .consult-button { width:100%; }
  .column-guide { display:none; }
  .product-row { grid-template-columns:26px minmax(0,1fr) 94px; gap:9px; }
  .product-name { grid-column:2/4; }
  .product-points { grid-column:2; text-align:left; }
  .qty-wrap { grid-column:3; grid-row:2; }
  .product-subtotal { grid-column:2/4; text-align:right; }
  .plan-grid { grid-template-columns:repeat(4,1fr); }
}

@media(max-width:600px){
  .calc-header { height:62px; padding:0 16px; }
  .brand { font-size:.8rem; }
  .brand-mark { width:28px; height:19px; }
  .close-link { font-size:.8rem; }
  main { padding:42px 14px 70px; }
  h1 { font-size:clamp(2.05rem,10.5vw,3rem); }
  .summary-bar { position:sticky; top:4px; grid-template-columns:1fr 1fr; gap:10px; padding:14px; border-radius:12px; }
  .summary-main { gap:8px; }
  .summary-kicker { display:none; }
  .summary-points strong { font-size:2.3rem; }
  .summary-stats { gap:5px; }
  .summary-stats div { padding:5px 7px; }
  .summary-plan { justify-self:start; grid-column:1/2; }
  .summary-plan strong { font-size:1.05rem; }
  .consult-button { grid-column:2/3; min-height:42px; padding:0 10px; font-size:.83rem; }
  .product-panel,.selection-summary,.plan-table { padding:22px 15px; border-radius:14px; }
  .panel-heading,.selection-heading { align-items:flex-start; flex-direction:column; gap:14px; }
  .clear-all { width:100%; }
  .filter-bar { grid-template-columns:1fr; padding:14px; }
  .selected-filter { justify-content:center; }
  .category-group summary { padding:14px 13px; font-size:.9rem; }
  .category-count { padding:2px 7px; }
  .product-list { padding:3px 10px 8px; }
  .product-row { grid-template-columns:24px minmax(0,1fr) 98px; min-height:0; padding:15px 2px; }
  .product-row.is-selected { margin:0 -4px; padding-left:8px; padding-right:8px; }
  .product-name strong { font-size:.9rem; }
  .product-name small,.product-points,.product-subtotal { font-size:.78rem; }
  .qty-wrap { grid-template-columns:30px 40px 30px; }
  .qty-wrap input { width:40px; }
  .selection-row { grid-template-columns:1fr auto; gap:8px 12px; }
  .selection-row strong { grid-column:1/3; text-align:right; }
  .plan-grid { grid-template-columns:1fr 1fr; }
  .plan-grid article:last-child { grid-column:1/-1; }
  .return-panel { grid-template-columns:1fr; padding:26px 20px; }
  .return-button { width:100%; white-space:normal; text-align:center; }
}