:root{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Noto Sans JP',sans-serif;color:#20334b;background:#f3f6fa;font-size:16px;line-height:1.65}*{box-sizing:border-box}body{margin:0}header{max-width:1180px;margin:auto;padding:23px 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #dbe3ee}.brand{color:#1c3657;text-decoration:none;font-weight:800;font-size:1.15rem;display:flex;align-items:center;gap:10px}.mark{font-size:1.6rem;background:#1c3657;color:#ffc857;line-height:1;padding:7px;border-radius:6px}.badge{border:1px solid #d2dbe8;padding:3px 12px;border-radius:20px;font-size:.875rem}main{max-width:1180px;margin:auto;padding:30px 28px 50px}.eyebrow{font-size:.875rem;letter-spacing:.12em;font-weight:700;color:#58708e}.intro h1{font-size:2.35rem;line-height:1.3;letter-spacing:-.03em;margin:9px 0 12px}.intro p{margin:0 0 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#b9c7d8;border-radius:7px}.input-wrap:focus-within{outline:2px solid #386fb3;outline-offset:2px}input,select{width:100%;min-width:0;font:inherit;color:#20334b;background:transparent;padding:10px 12px;border:0;border-radius:7px}input:focus,select:focus{outline:none}.unit{padding-right:12px;white-space:nowrap;font-size:.875rem;color:#506279}.hint{font-size:.875rem;color:#52677f;margin:12px 0 0}.products{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}.product{padding:15px;background:#f5f8fc;border-radius:9px}.product h3{margin:0 0 10px;font-size:1rem}.product .field+.field{margin-top:12px}button{font-family:inherit}.calculate{width:100%;border:0;background:#ffc857;color:#1c3657;font-weight:800;font-size:1rem;padding:15px;border-radius:9px;cursor:pointer}.calculate:hover{background:#ffbb32}button:focus-visible,a:focus-visible{outline:3px solid #386fb3;outline-offset:3px}.result{background:#1c3657;color:#fff;border-radius:16px;padding:26px;position:sticky;top:20px}.result .eyebrow{color:#bfd0e8}.result-top{display:flex;justify-content:space-between;gap:10px;font-size:.875rem}.quantity{font-size:3rem;font-weight:800;letter-spacing:-.03em;line-height:1.2;margin:14px 0 5px;overflow-wrap:anywhere}.quantity small{font-size:1.2rem;margin-left:8px}.measure{font-size:.875rem;color:#cad7e9;margin-bottom:22px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:12px}.offer{border:1px solid #536e91;border-radius:10px;padding:16px;background:#294668;min-width:0}.offer h3{margin:0;font-size:1rem}.offer .cost{font-size:1.5rem;font-weight:800;color:#ffd57c;margin:8px 0;overflow-wrap:anywhere}.offer dl{margin:0}.offer dt{font-size:.875rem;color:#c9d5e6;margin-top:8px}.offer dd{margin:0;font-weight:600;overflow-wrap:anywhere}.difference{margin:18px 0;background:#294668;padding:12px;border-radius:8px}.detail{font-size:.875rem;color:#d1ddec;margin:18px 0}.result .hint{color:#d1ddec}.actions button{background:transparent;border:1px solid #7590b3;color:#fff;padding:10px 12px;border-radius:7px;font-size:.875rem;cursor:pointer;width:100%}.error{background:#fff0ed;color:#a12920;padding:12px;border-radius:7px}.wall{display:grid;grid-template-columns:30px 1fr 1fr 32px;gap:8px;align-items:end;margin-bottom:12px}.wall .field span{font-size:.875rem}.remove{height:46px;border:1px solid #c5d1df;color:#546984;background:white;border-radius:6px;cursor:pointer}.add{background:white;color:#1c3657;border:1px solid #b9c7d8;padding:8px 12px;border-radius:6px;font-size:.875rem;margin-bottom:16px;cursor:pointer}.explain{border-top:1px solid #d2dce9;margin-top:32px;padding-top:24px;max-width:800px}.explain h2{margin-bottom:10px}.explain p,footer p{font-size:.875rem;color:#52677f}footer{border-top:1px solid #d2dce9;margin-top:25px;padding-top:23px;max-width:900px;font-size:.875rem}@media(max-width:760px){header{padding:18px}main{padding:24px 18px}.intro h1{font-size:2rem}.layout{grid-template-columns:1fr;gap:20px}.result{position:static}.card{padding:20px}.tabs button{font-size:.875rem;padding:12px 3px}.quantity{font-size:2.6rem}}@media(max-width:380px){.grid,.products{grid-template-columns:1fr}.comparison{grid-template-columns:1fr}.wall{grid-template-columns:24px 1fr 1fr 26px}.wall input{padding:10px 5px}.mobile{display:block}}@media print{header,.intro,.tabs,.calculate,.actions,.badge,footer{display:none}body{background:white;color:black}main{padding:0}.layout{display:block}.card{break-inside:avoid}.result{position:static;background:white;color:black;border:1px solid #999}.result *{color:black!important}.offer,.difference{background:white;border:1px solid #999}.explain{margin-top:10px}.result-top{display:none}}

.page-links{max-width:1180px;margin:0 auto;padding:12px 28px;display:flex;flex-wrap:wrap;gap:10px 20px;font-size:.875rem}.page-links a,.document a{color:#305f98;text-underline-offset:4px}.document{max-width:860px}.document h1{font-size:2rem;line-height:1.4}.document h2{margin:28px 0 10px}.document p,.document li{font-size:1rem;line-height:1.85}.explain h2:not(:first-child){margin-top:20px}@media(max-width:760px){.page-links{padding:12px 18px}.intro h1{font-size:1.7rem}}@media print{.page-links{display:none}}
.field-heading{display:flex;align-items:center;gap:8px;margin-bottom:7px}.field-heading label{margin:0}.help-button{display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px;width:28px;height:28px;padding:0;border:1px solid #59738d;border-radius:50%;background:#fff;color:#1c3657;font-size:16px;font-weight:700;cursor:pointer}.help-button:hover{background:#e9f0f7}.help-button:focus-visible,.help-dialog button:focus-visible{outline:3px solid #d18000;outline-offset:3px}.help-dialog{width:min(480px,calc(100vw - 32px));max-height:85dvh;box-sizing:border-box;overflow:auto;padding:22px;border:0;border-radius:16px;color:#1c3657;background:#fff;box-shadow:0 20px 70px #0004}.help-dialog::backdrop{background:#10263dcc}.help-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.help-header h2{font-size:20px;margin:0}.help-close{border:0;background:#edf2f7;border-radius:50%;width:40px;height:40px;font-size:26px;cursor:pointer}.help-dialog svg{display:block;width:100%;height:auto;margin:16px 0;font-size:13px;font-family:inherit}.help-dialog p{line-height:1.8;margin:12px 0 20px}.help-done{display:block;width:100%;padding:12px;border:0;border-radius:8px;background:#1c3657;color:white;font-size:16px;cursor:pointer}@media print{.help-button,.help-dialog{display:none!important}}
.field .field-heading{display:flex;align-items:center;gap:8px}.field-heading label{min-width:0}.field .field-heading>span{margin:0}.wall .field{min-width:0}@media(max-width:480px){.wall{grid-template-columns:18px minmax(0,1fr) minmax(0,1fr) 28px;gap:6px}.wall input{padding:10px 5px}.wall .unit{padding-right:6px}}

.offer h3,.difference{overflow-wrap:anywhere}.product input[type=text]{font-size:1rem}

.document table{width:100%;border-collapse:collapse;margin:18px 0}.document th,.document td{border:1px solid #ccd7e2;padding:10px;text-align:left;overflow-wrap:anywhere}.document th{background:#e9f0f7}

.saved-controls{padding:16px;margin-bottom:18px;background:#e9f0f7;border-radius:10px;display:flex;flex-wrap:wrap;gap:8px}.saved-controls button{padding:10px 12px;border:1px solid #b9c7d8;border-radius:7px;background:white;color:#1c3657;cursor:pointer}.saved-controls p{flex-basis:100%;margin:0;font-size:.875rem}#save-status:empty{display:none}@media print{.saved-controls{display:none}}

.cutting-plan{margin-top:14px;font-size:.875rem}.cutting-plan summary{cursor:pointer;text-underline-offset:3px;text-decoration:underline}.cutting-plan ul{padding-left:18px}.cutting-plan p{font-size:.8rem;color:#d1ddec}.cutting-plan li{margin-bottom:8px;overflow-wrap:anywhere}
@media(max-width:540px){.products{grid-template-columns:1fr}.saved-controls button{min-height:44px}.cutting-plan summary{padding:8px 0}}
#print-report{display:none}.report-preview{width:min(1000px,calc(100vw - 24px));max-height:94dvh;overflow:auto;box-sizing:border-box;padding:22px;border:0;border-radius:14px;background:#eef2f7;color:#1c3657}.report-preview::backdrop{background:#10263dcc}.report-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center}.report-toolbar h2{margin:0}.report-toolbar button,#report-print{min-height:44px;border:1px solid #8aa0b7;border-radius:8px;padding:10px 16px;cursor:pointer}.report-toolbar button{background:white;color:#1c3657}#report-print{background:#1c3657;color:white;margin:0 0 18px}.report-instructions{font-size:.875rem;line-height:1.7}.report-sheet{background:white;color:#1b2939;padding:28px;line-height:1.55;font-size:14px}.report-heading{display:flex;justify-content:space-between;gap:20px;border-bottom:3px solid #1c3657;padding-bottom:16px;margin-bottom:18px}.report-brand{font-size:12px;letter-spacing:.08em;margin:0 0 6px}.report-sheet h1{font-size:23px;margin:0;line-height:1.4}.report-date{font-size:11px;margin:0;max-width:170px}.report-summary{display:flex;gap:28px;padding:14px 18px;background:#f1f4f7;border:1px solid #cad4df;margin-bottom:20px}.report-summary span{display:block;font-size:12px}.report-summary strong{font-size:25px}.report-sheet h2{font-size:15px;margin:20px 0 8px}.report-sheet table{width:100%;border-collapse:collapse;table-layout:fixed}.report-sheet th,.report-sheet td{padding:9px 8px;border:1px solid #becad7;text-align:left;vertical-align:top;overflow-wrap:anywhere;font-weight:400}.report-sheet thead th,.report-conditions th{background:#f1f4f7;font-weight:600}.report-comparison th:first-child{width:22%}.report-sheet small,.report-small{font-size:11px}.report-difference{font-weight:700;border-left:4px solid #1c3657;padding:8px 12px;background:#f1f4f7}.report-conditions th{width:50%}.report-notes{border-top:1px solid #becad7;margin-top:20px;font-size:12px}.report-footer{border-top:1px solid #becad7;padding-top:12px;margin-top:20px;font-size:10px;overflow-wrap:anywhere}.report-mobile-scroll{overflow-x:auto}.report-toolbar button:focus-visible,#report-print:focus-visible{outline:3px solid #d18000;outline-offset:3px}@media(max-width:600px){.report-preview{padding:14px}.report-mobile-scroll .report-sheet{min-width:640px;padding:20px}.report-toolbar h2{font-size:16px}#report-print{width:100%}}@media print{@page{size:A4 portrait;margin:12mm}body> *{display:none!important}body>#print-report{display:block!important}body{background:white!important;margin:0!important}#print-report{padding:0;font-size:10pt;line-height:1.5;color:#111}.report-heading{break-inside:avoid}.report-summary,.report-difference,.report-notes{break-inside:avoid}.report-sheet h2{break-after:avoid}.report-sheet table{font-size:9pt}.report-sheet tr{break-inside:avoid}.report-sheet thead{display:table-header-group}.report-sheet h1{font-size:19pt}.report-summary strong{font-size:20pt}.report-sheet th,.report-sheet td{padding:7px 6px}.report-heading{border-color:#333}.report-toolbar,.report-preview{display:none!important}}

.report-date{flex:0 0 auto;white-space:nowrap;max-width:none}.report-timezone{display:block;text-align:right}.report-sheet table{border-collapse:separate;border-spacing:0;border-top:1px solid #becad7;border-left:1px solid #becad7}.report-sheet th,.report-sheet td{border:0;border-right:1px solid #becad7;border-bottom:1px solid #becad7}

.report-export-actions{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0}.report-export-actions a,.report-export-actions button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 14px;border:1px solid #8aa0b7;border-radius:8px;background:white;color:#1c3657;font-size:14px;text-decoration:none;cursor:pointer}.report-export-actions #report-print{margin:0}.report-export-actions [hidden]{display:none!important}#report-export-status{font-size:13px;line-height:1.7}@media(max-width:600px){.report-export-actions>a,.report-export-actions>button{width:100%}}

.product-dimensions{border-top:1px solid #ccd7e2;border-bottom:1px solid #ccd7e2;padding:10px 0;margin:12px 0}.product-dimensions>.hint{margin:0 0 10px}.offer-dimensions{font-size:.8rem;color:#d1ddec;overflow-wrap:anywhere}.quantity{font-size:clamp(1.4rem,4vw,3rem)}

.project-fields{padding-bottom:18px;margin-bottom:18px;border-bottom:1px solid #dbe3ee}.project-fields .field+.field{margin-top:12px}.project-fields label{display:block;font-size:.875rem;font-weight:600;margin-bottom:6px}.project-fields textarea{display:block;box-sizing:border-box;width:100%;min-height:100px;resize:vertical;border:1px solid #b9c7d8;border-radius:7px;background:#f6f8fb;color:#20334b;font:inherit;padding:10px 12px}.project-fields textarea:focus{outline:2px solid #386fb3;outline-offset:2px}.report-project{margin:0 0 18px;padding:12px 14px;border:1px solid #cad4df}.report-project p{margin:0 0 6px;overflow-wrap:anywhere}.report-project-name{font-size:14px}.report-memo{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px}.report-heading>div{min-width:0}.report-sheet h1{overflow-wrap:anywhere}

.article-callout{padding:16px 20px;border-left:4px solid #d18000;background:#fff6df;margin:20px 0}.article-callout p{margin:8px 0 0}.article-cta{display:inline-block;min-height:46px;background:#1c3657;color:white!important;padding:12px 18px;border-radius:8px;font-weight:600;text-decoration:none}.article-table-scroll{overflow-x:auto}.article-table-scroll table{min-width:540px}.document caption{text-align:left;font-weight:600;margin:0 0 8px}.article-breadcrumb,.article-source{font-size:.875rem!important}.document h3{font-size:1.05rem;margin-top:22px}@media(max-width:540px){.article-cta{display:block;text-align:center}.article-callout{padding:14px}}

.guide-figure{margin:18px 0;padding:16px;background:white;border:1px solid #d0dce8;border-radius:12px;min-width:0}.guide-figure h3{margin:0 0 8px;font-size:1rem;line-height:1.6}.guide-figure img{display:block;width:100%;max-width:400px;height:auto;margin:0 auto}.guide-figure figcaption{font-size:.875rem;line-height:1.75;color:#405a75;margin-top:8px}.guide-figure-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}.guide-figure-grid .guide-figure{height:auto}@media(max-width:680px){.guide-figure-grid{grid-template-columns:minmax(0,1fr);gap:0}.guide-figure{padding:12px}.guide-figure-grid .guide-figure{height:auto}}@media print{.guide-figure{break-inside:avoid}.guide-figure-grid{display:block}.guide-figure img{max-width:300px}}

/* Site identity and home page */
.site-header{gap:16px;padding-top:20px;padding-bottom:20px}.brand-copy{display:flex;flex-direction:column;line-height:1.45}.brand-copy strong{font-size:1.15rem}.brand-copy small{font-size:.7rem;font-weight:500;color:#667d91;letter-spacing:.03em}.site-header .mark{width:44px;height:44px;display:grid;place-items:center;background:#1c3657;border-radius:10px;box-shadow:3px 3px 0 #e4c16b}.site-header .badge{font-size:.75rem;background:white;white-space:nowrap}.page-links{gap:8px 18px}.page-links a{text-decoration:none}.page-links a:hover{text-decoration:underline}.home-page{background:#f7f7f2}.home-page main{padding-top:20px}.home-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:30px;align-items:center;background:#1b344b;color:#fff;border-radius:22px;padding:46px 42px;overflow:hidden;position:relative}.hero-eyebrow{display:flex;align-items:center;gap:9px;font-size:.875rem;letter-spacing:.06em;color:#c8d8d0;margin:0 0 18px}.hero-eyebrow>span{width:7px;height:7px;border-radius:50%;background:#e6c176}.home-hero h1{font-size:clamp(2rem,3.7vw,2.9rem);line-height:1.4;letter-spacing:.01em;margin:0 0 18px;font-weight:800}.home-hero h1 em{font-style:normal;color:#f1d186}.hero-description{font-size:1rem;color:#e0e9ed;line-height:1.95;margin:0 0 24px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.hero-primary{display:inline-flex;align-items:center;justify-content:center;gap:16px;padding:14px 19px;border-radius:9px;background:#f1d186;color:#183147;font-weight:700;text-decoration:none;min-height:48px}.hero-primary:hover{background:#ffe3a2}.hero-secondary{color:#e9f0ed;font-size:.875rem;text-underline-offset:5px;padding:10px 0}.hero-note{font-size:.75rem;color:#bccdd7;margin:14px 0 0}.hero-visual{background:#f5f4eb;border-radius:16px;padding:20px 16px 18px;color:#24445c;position:relative;box-shadow:0 12px 30px #0b1d3029}.hero-visual-label{font-size:.6rem;letter-spacing:.17em;margin:0 6px;color:#708278}.hero-visual img{display:block;width:100%;height:auto;object-fit:contain;max-height:310px;margin:0 auto}.hero-visual-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}.hero-visual-tags span{background:white;border:1px solid #d4ddd4;padding:5px 9px;border-radius:6px;font-size:.7rem;color:#3d5c51}.hero-visual-caption{text-align:center;font-size:.8rem;font-weight:600;margin:12px 0 0}.home-section-heading{display:flex;justify-content:space-between;gap:20px;align-items:end;margin:0 0 20px}.home-section-heading .eyebrow{letter-spacing:.04em;margin:0 0 5px;color:#697e82}.home-section-heading h2{font-size:1.5rem;line-height:1.5;margin:0}.home-section-heading>p,.home-section-heading>a{font-size:.875rem;color:#587078;margin:0}.home-tools,.home-guides{padding-top:42px;scroll-margin-top:20px}.tool-entry-grid,.guide-entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.tool-entry{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:24px;background:white;border:1px solid #d6ded7;border-radius:14px;text-decoration:none;color:#243b4c;transition:transform .15s,border-color .15s}.tool-entry:hover{transform:translateY(-3px);border-color:#759584}.tool-entry-title{font-weight:800;font-size:1.2rem}.tool-entry-description{font-size:.875rem;line-height:1.85;color:#587078}.tool-entry-link{margin-top:auto;padding-top:8px;font-size:.875rem;font-weight:700;color:#416653}.tool-icon{width:54px;height:54px;border-radius:12px;background:#edf1e9;display:flex;position:relative;align-items:center;justify-content:center}.tool-icon-tile{display:grid;grid-template-columns:repeat(2,14px);grid-template-rows:repeat(2,14px);gap:3px}.tool-icon-tile i{background:#d6b66f;border:1px solid #987e44;border-radius:2px}.tool-icon-roll i{display:block;width:27px;height:32px;background:#e8d29b;border:1px solid #987e44;border-radius:4px;position:relative}.tool-icon-roll i:before{content:'';position:absolute;top:-3px;left:-1px;width:27px;height:9px;border:1px solid #987e44;border-radius:50%;background:#f7e5b8}.tool-icon-wall{gap:4px}.tool-icon-wall 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