:root{--navy:#243447;--ink:#333a42;--muted:#66717d;--coral:#c9473a;--coral-dark:#a9362c;--orange:#c7792c;--ivory:#f7f5f0;--paper:#fff;--line:#dde2e6;--soft-blue:#edf2f5;--soft-orange:#fff4e6;--shadow:0 12px 35px rgba(36,52,71,.09)}
*{box-sizing:border-box}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}html{scroll-behavior:smooth;scroll-padding-top:86px}body{margin:0;background:#fff;color:var(--ink);font-family:"Noto Sans JP","Yu Gothic",YuGothic,sans-serif;font-size:16px;line-height:1.8}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}button{color:inherit}a{color:inherit}img{display:block;max-width:100%}
.topbar{position:sticky;top:0;z-index:30;display:flex;justify-content:space-between;align-items:center;height:72px;padding:0 max(24px,calc((100vw - 1160px)/2));background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.brand{display:flex;gap:12px;align-items:center;color:var(--navy);font-size:19px;font-weight:900;line-height:1.15;text-decoration:none;letter-spacing:-.03em}.brand small{display:block;margin-bottom:3px;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.04em}.brand-mark{position:relative;display:block;width:32px;height:32px;background:var(--navy);border-radius:7px}.brand-mark:before{content:"";position:absolute;left:8px;top:13px;width:16px;height:12px;background:white;clip-path:polygon(50% 0,100% 42%,100% 100%,0 100%,0 42%)}.brand-mark span{position:absolute;right:-3px;top:-3px;width:10px;height:10px;border-radius:50%;background:var(--coral)}.topbar nav{display:flex;gap:24px;align-items:center;font-size:14px;font-weight:700}.topbar nav a{text-decoration:none}.text-button{padding:0;border:0;background:none;cursor:pointer;font-weight:700}.nav-cta{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:8px;background:var(--coral);color:white!important;box-shadow:0 6px 16px rgba(201,71,58,.22)}
.intro{display:grid;grid-template-columns:1.08fr .92fr;align-items:stretch;max-width:1240px;min-height:430px;margin:0 auto;padding:42px 40px 48px}.intro-copy{display:flex;flex-direction:column;justify-content:center;padding-right:56px}.eyebrow,.section-kicker{margin:0 0 10px;color:var(--coral);font-size:12px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.intro h1{margin:0 0 20px;color:var(--navy);font-size:clamp(36px,4.4vw,58px);line-height:1.23;letter-spacing:-.055em}.intro h1 em{color:var(--coral);font-style:normal}.lead{max-width:650px;margin:0 0 26px;color:var(--muted);font-size:18px}.primary-cta{display:inline-flex;align-items:center;justify-content:space-between;width:min(100%,390px);min-height:56px;padding:0 22px;border-radius:8px;background:var(--coral);color:#fff;font-weight:900;text-decoration:none;box-shadow:0 9px 22px rgba(201,71,58,.22);transition:.2s}.primary-cta:hover{background:var(--coral-dark);transform:translateY(-1px)}.trust-list{display:flex;flex-wrap:wrap;gap:6px 18px;padding:0;margin:18px 0 0;list-style:none;color:var(--muted);font-size:13px;font-weight:700}.trust-list li:before{content:"✓";margin-right:6px;color:var(--coral)}.intro-visual{position:relative;min-height:340px;margin:0;overflow:hidden;border-radius:14px;background:var(--ivory);box-shadow:var(--shadow)}.intro-visual img{width:100%;height:100%;object-fit:cover}.intro-visual figcaption,.case-feature figcaption{position:absolute;right:10px;bottom:8px;padding:2px 8px;border-radius:4px;background:rgba(255,255,255,.86);color:var(--muted);font-size:11px}
.quick-guide{display:grid;grid-template-columns:repeat(3,1fr);max-width:1160px;margin:0 auto 16px;border:1px solid var(--line);border-radius:12px;background:white;box-shadow:0 6px 24px rgba(36,52,71,.05)}.quick-guide>div{display:grid;grid-template-columns:40px 1fr;column-gap:12px;padding:20px 24px;border-right:1px solid var(--line)}.quick-guide>div:last-child{border-right:0}.quick-guide span{grid-row:1/3;display:grid;place-items:center;align-self:center;width:38px;height:38px;border-radius:50%;background:var(--soft-orange);color:var(--orange);font-size:12px;font-weight:900}.quick-guide strong{color:var(--navy);font-size:15px}.quick-guide small{color:var(--muted);font-size:12px}
.calculator-wrap{padding:72px max(24px,calc((100vw - 1160px)/2));background:var(--ivory)}.calculator-heading{margin-bottom:28px}.calculator-heading h2,.section-heading h2,.principles h2{margin:0;color:var(--navy);font-size:clamp(28px,3vw,40px);line-height:1.3;letter-spacing:-.035em}.calculator-heading>p:last-child{margin:8px 0 0;color:var(--muted)}.calculator{display:grid;grid-template-columns:minmax(0,2fr) minmax(330px,1fr);gap:32px;max-width:1160px;margin:auto}.calculator-main{min-width:0}fieldset{margin:0 0 16px;padding:0;border:1px solid var(--line);border-radius:12px;background:var(--paper);overflow:hidden}legend{float:left;width:100%;padding:15px 20px;border-bottom:1px solid var(--line);color:var(--navy);font-size:16px;font-weight:900;background:#fbfcfd}legend span{display:inline-grid;place-items:center;width:28px;height:28px;margin-right:8px;border-radius:50%;background:var(--navy);color:white;font-size:11px}.cost-row{clear:both;display:grid;grid-template-columns:minmax(185px,.9fr) minmax(290px,1.1fr);gap:24px;align-items:center;padding:20px;border-bottom:1px solid #edf0f2}.cost-row:last-child{border-bottom:0}.cost-label label{display:block;color:var(--navy);font-weight:800}.cost-label small{display:block;color:var(--muted);font-size:13px}.cost-control{display:grid;grid-template-columns:minmax(155px,1fr) auto;gap:8px}.amount-input{display:flex;align-items:center;min-height:50px;border:1px solid #aeb8c1;background:white;border-radius:6px;overflow:hidden}.amount-input:focus-within{outline:3px solid rgba(201,71,58,.15);border-color:var(--coral)}.amount-input input{min-width:0;width:100%;padding:11px;border:0;outline:0;text-align:right;color:var(--navy);font-weight:800;background:transparent}.amount-input input:disabled{background:#f0f2f3}.amount-input span{padding-right:10px;white-space:nowrap;color:var(--muted);font-size:12px}.answer-buttons{display:grid;grid-template-columns:1fr 1fr;gap:5px}.answer-buttons button{min-height:50px;padding:7px 8px;border:1px solid var(--line);border-radius:6px;background:white;font-size:11px;font-weight:700;cursor:pointer}.answer-buttons button.active{background:#f9e8e6;border-color:var(--coral);color:var(--coral-dark);box-shadow:inset 0 0 0 1px var(--coral)}.cost-row.one-time{background:#fffbf5}.form-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-top:8px}.form-actions button,.result-actions button,.copy-box button{min-height:46px;padding:10px 16px;border-radius:7px;font-size:13px;font-weight:900;cursor:pointer}.save-button{border:1px solid var(--navy);background:var(--navy);color:white}.reset-button{border:0;background:transparent;text-decoration:underline;text-underline-offset:4px}.form-actions span{font-size:13px;color:var(--muted)}
.result-panel{position:sticky;top:92px;align-self:start;padding:28px;border:1px solid var(--line);border-top:5px solid var(--navy);border-radius:12px;background:white;box-shadow:var(--shadow)}.result-panel h3{margin:0;color:var(--navy);font-size:24px}.period-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;margin:18px 0 24px;padding:4px;border-radius:8px;background:var(--soft-blue)}.period-tabs button{min-height:40px;border:0;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer}.period-tabs button.active{background:white;color:var(--navy);font-weight:900;box-shadow:0 2px 8px rgba(36,52,71,.1)}.result-caption{margin-bottom:2px;color:var(--muted);font-size:14px}.total{display:block;margin-bottom:2px;color:var(--navy);font-size:clamp(42px,4vw,58px);line-height:1.2;letter-spacing:-.06em;overflow-wrap:anywhere}.annual-note{font-size:13px;color:var(--muted)}.result-block{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-top:1px solid var(--line);font-size:14px}.result-block strong{color:var(--navy);font-size:18px}.result-block.warning{margin:0 -8px;padding:14px 8px;border:0;border-radius:7px;background:var(--soft-orange)}.result-block.warning strong{color:#9b5a19}.unknown-box{margin-top:10px;padding:14px 15px;border-left:3px solid var(--orange);background:#fffbf4;font-size:13px}.unknown-box p{margin-bottom:5px;color:var(--navy);font-weight:800}.unknown-box ul{margin:0;padding-left:18px;color:var(--muted)}.result-caution{margin:17px 0;color:var(--muted);font-size:12px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px}.result-actions button{border:1px solid var(--navy);background:white;color:var(--navy)}.result-actions button:first-child{background:var(--navy);color:white}.share-note{display:block;margin-top:8px;color:var(--muted);font-size:11px}
.estimate,.case-section,.guides,.principles{padding:72px max(24px,calc((100vw - 1160px)/2))}.estimate{background:white}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:32px;max-width:1160px;margin:0 auto 32px}.section-heading>p{max-width:420px;margin:0;color:var(--muted);font-size:14px}.branch-buttons{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:850px}.branch-buttons button{min-height:64px;padding:15px 20px;border:2px solid var(--navy);border-radius:9px;background:white;color:var(--navy);font-weight:900;cursor:pointer}.branch-buttons button.active,.branch-buttons button:hover{background:var(--navy);color:white}.estimate-check,.no-estimate{margin-top:28px;padding:28px;border:1px solid var(--line);border-radius:12px;background:var(--ivory)}.check-summary{display:flex;align-items:baseline;gap:10px;margin-bottom:22px}.check-summary strong{color:var(--navy);font-size:36px}.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.check-card{padding:18px;border:1px solid var(--line);border-radius:9px;background:white}.check-card h3{margin-bottom:6px;color:var(--navy);font-size:16px}.check-card p{min-height:66px;margin-bottom:14px;color:var(--muted);font-size:12px}.check-card select{width:100%;min-height:44px;padding:8px;border:1px solid #aeb8c1;border-radius:6px;background:white;font-size:13px}.copy-box{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:20px}.copy-box p{grid-column:1/-1;margin:0;color:var(--navy);font-size:13px;font-weight:800}.copy-box textarea{min-height:120px;padding:12px;border:1px solid var(--line);border-radius:7px;resize:vertical}.copy-box button{align-self:start;border:0;background:var(--coral);color:white}.no-estimate>p{max-width:700px}.mini-guides{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mini-guides a{display:grid;gap:4px;padding:18px;border:1px solid var(--line);border-radius:8px;background:white;text-decoration:none}.mini-guides span{font-size:11px;color:var(--coral);font-weight:900}.mini-guides strong{color:var(--navy)}.mini-guides small{color:var(--muted)}
.decision-entry{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center;padding:56px max(24px,calc((100vw - 1160px)/2));background:var(--soft-blue)}.decision-entry h2{margin:0 0 12px;color:var(--navy);font-size:clamp(28px,3vw,40px);line-height:1.35;letter-spacing:-.035em}.decision-entry p:last-child{max-width:680px;margin:0;color:var(--muted)}.decision-entry-link{display:inline-flex;gap:34px;align-items:center;justify-content:space-between;min-width:260px;min-height:58px;padding:0 22px;border-radius:8px;background:var(--coral);color:white;font-weight:900;text-decoration:none;box-shadow:0 9px 22px rgba(201,71,58,.22)}
.case-section{background:var(--navy);color:white}.case-section .section-kicker{color:#f0a49c}.case-section .section-heading h2{color:white}.case-section .section-heading>p{color:#ccd5dd}.case-feature{display:grid;grid-template-columns:1.03fr .97fr;max-width:1160px;margin:auto;overflow:hidden;border-radius:14px;background:white;color:var(--ink);box-shadow:0 18px 45px rgba(0,0,0,.16)}.case-feature figure{position:relative;min-height:430px;margin:0}.case-feature img{width:100%;height:100%;object-fit:cover}.case-copy{display:flex;flex-direction:column;justify-content:center;padding:42px}.case-tag,.article-tag{display:inline-flex;align-self:flex-start;padding:4px 9px;border-radius:999px;background:#f8e5e3;color:var(--coral-dark);font-size:12px;font-weight:900}.case-copy h3{margin:14px 0 12px;color:var(--navy);font-size:29px;line-height:1.45;letter-spacing:-.03em}.case-copy>p{color:var(--muted)}.case-copy dl{margin:12px 0 0;border-top:1px solid var(--line)}.case-copy dl div{display:grid;grid-template-columns:135px 1fr;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}.case-copy dt{color:var(--navy);font-size:13px;font-weight:900}.case-copy dd{margin:0;color:var(--muted);font-size:13px}
.guides{background:var(--ivory)}.guide-cards{display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:16px;max-width:1160px;margin:auto}.guide-card{position:relative;display:flex;flex-direction:column;min-height:360px;padding:26px;border:1px solid var(--line);border-radius:12px;background:white;overflow:hidden}.guide-card.featured{padding:0}.guide-card.featured img{width:100%;height:215px;object-fit:cover}.guide-card.featured>div{padding:22px}.guide-card h3{margin:12px 0 9px;color:var(--navy);font-size:21px;line-height:1.5}.guide-card p{color:var(--muted);font-size:14px}.guide-card small{margin-top:auto;color:var(--muted)}.card-number{margin-bottom:auto;color:#e7ebee;font-size:74px;font-weight:900;line-height:1}.official-link{max-width:1160px;margin:24px auto 0;padding:16px 18px;border-left:3px solid var(--navy);background:white;color:var(--muted);font-size:13px}.official-link a{color:var(--navy);font-weight:800;text-decoration-thickness:2px}
.guide-card h3 a{color:inherit;text-decoration:none}.guide-card.featured>a{display:block}.all-columns{max-width:1160px;margin:22px auto 0;text-align:right}.all-columns a{color:var(--navy);font-weight:900;text-underline-offset:4px}.area-entry{padding:72px max(24px,calc((100vw - 1160px)/2));background:white}.area-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:1160px;margin:auto}.area-cards a{display:grid;gap:5px;padding:24px;border:1px solid var(--line);border-radius:10px;text-decoration:none;transition:.2s}.area-cards a:hover{border-color:var(--coral);transform:translateY(-2px);box-shadow:var(--shadow)}.area-cards span{color:var(--coral);font-size:21px;font-weight:900}.area-cards strong{color:var(--navy);font-size:14px}
.principles{display:grid;grid-template-columns:.75fr 1.25fr;gap:60px;align-items:start;background:white}.principles>div:first-child>p:last-child{color:var(--muted)}.principle-grid{display:grid;gap:0;border-top:1px solid var(--line)}.principle-grid p{display:grid;grid-template-columns:190px 1fr;gap:18px;margin:0;padding:18px 0;border-bottom:1px solid var(--line)}.principle-grid strong{color:var(--navy)}.principle-grid span{color:var(--muted);font-size:14px}footer{display:flex;justify-content:space-between;gap:24px;padding:32px max(24px,calc((100vw - 1160px)/2));background:var(--navy);color:#d7dfe5;font-size:12px}footer>div{display:grid;gap:3px}footer>div:last-child{text-align:right}footer strong{color:white;font-size:17px}footer nav{display:flex;flex-wrap:wrap;gap:10px 18px;align-content:center;justify-content:center}footer nav a{color:#d7dfe5;text-decoration:none}footer nav a:hover{text-decoration:underline}dialog{max-width:570px;padding:34px;border:0;border-radius:12px;box-shadow:0 30px 100px rgba(0,0,0,.35);color:var(--ink)}dialog::backdrop{background:rgba(36,52,71,.72)}.dialog-close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:24px;cursor:pointer}.dialog-ok{min-height:46px;padding:10px 18px;border:0;border-radius:7px;background:var(--navy);color:white;font-weight:900;cursor:pointer}.toast{position:fixed;z-index:50;left:50%;bottom:24px;transform:translate(-50%,20px);padding:10px 16px;background:var(--navy);color:white;border-radius:6px;opacity:0;pointer-events:none;transition:.2s;font-size:13px}.toast.show{opacity:1;transform:translate(-50%,0)}[hidden]{display:none!important}
@media(max-width:1050px){.topbar nav a:not(.nav-cta),.topbar .text-button{display:none}.intro{grid-template-columns:1fr 1fr}.intro-copy{padding-right:32px}.calculator{grid-template-columns:1fr}.result-panel{position:relative;top:auto}.check-grid{grid-template-columns:repeat(2,1fr)}.guide-cards{grid-template-columns:1fr 1fr}.guide-card.featured{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr}.guide-card.featured img{height:100%}.principles{grid-template-columns:1fr;gap:24px}}
@media(max-width:767px){html{scroll-padding-top:68px}.topbar{height:64px;padding:0 20px}.brand{font-size:17px}.brand small{display:none}.brand-mark{width:29px;height:29px}.nav-cta{min-height:40px;padding:0 12px;font-size:12px}.intro{grid-template-columns:1fr;padding:36px 20px 32px}.intro-copy{padding:0}.intro h1{font-size:32px}.lead{font-size:16px}.intro-visual{min-height:185px;margin-top:28px}.intro-visual img{aspect-ratio:16/9}.trust-list{gap:4px 12px}.quick-guide{grid-template-columns:1fr;margin:0 20px 8px}.quick-guide>div{border-right:0;border-bottom:1px solid var(--line);padding:14px 16px}.quick-guide>div:last-child{border-bottom:0}.calculator-wrap,.estimate,.case-section,.guides,.principles,.area-entry{padding:48px 20px}.decision-entry{grid-template-columns:1fr;gap:22px;padding:42px 20px}.decision-entry-link{min-width:0;width:100%}.cost-row{grid-template-columns:1fr;gap:12px;padding:17px}.cost-control{grid-template-columns:1fr}.answer-buttons button{min-height:44px}.section-heading{display:block}.section-heading>p{margin-top:10px}.branch-buttons,.mini-guides,.check-grid,.guide-cards,.area-cards{grid-template-columns:1fr}.estimate-check,.no-estimate{padding:18px}.check-card p{min-height:0}.copy-box{grid-template-columns:1fr}.copy-box button{width:100%}.case-feature{grid-template-columns:1fr}.case-feature figure{min-height:240px}.case-copy{padding:25px}.case-copy h3{font-size:23px}.case-copy dl div{grid-template-columns:1fr;gap:2px}.guide-card.featured{grid-column:auto;display:block}.guide-card.featured img{height:190px}.guide-card{min-height:300px}.principle-grid p{grid-template-columns:1fr;gap:5px}footer{display:grid;gap:16px}footer nav{justify-content:flex-start}footer>div:last-child{text-align:left}.result-actions{grid-template-columns:1fr}}
@media print{.topbar,.intro,.quick-guide,.calculator-heading,.calculator-main,.estimate,.case-section,.guides,.principles,footer,.result-actions,.share-note{display:none!important}body{background:white}.calculator-wrap{padding:20px;background:white}.calculator{display:block}.result-panel{position:static;box-shadow:none;border:2px solid #111}.total,.result-panel h3,.result-block strong{color:#111}.unknown-box{background:#eee;color:#111}}

/* Unknown-item guidance */
.unknown-guide{grid-column:1/-1;margin-top:2px;padding:20px 22px;border:1px solid #efc98f;border-left:5px solid var(--orange);border-radius:9px;background:#fffaf1}.unknown-guide-heading{display:flex;align-items:center;gap:12px;margin-bottom:10px}.unknown-guide-heading span{display:inline-flex;padding:3px 8px;border-radius:999px;background:var(--soft-orange);color:#945618;font-size:11px;font-weight:900}.unknown-guide h4{margin:0;color:var(--navy);font-size:18px}.unknown-guide-source,.unknown-guide-formula{margin:8px 0;color:var(--ink);font-size:13px}.unknown-guide ol{margin:10px 0;padding-left:22px;color:var(--muted);font-size:13px}.unknown-guide li+li{margin-top:4px}.unknown-guide-close{padding:4px 0;border:0;background:transparent;color:var(--navy);font-size:12px;font-weight:800;text-decoration:underline;text-underline-offset:3px;cursor:pointer}

/* WordPress editorial pages */
.admin-bar .topbar{top:32px}
.content-topbar{position:sticky}.content-shell,.article-shell{max-width:1160px;margin:0 auto;padding:72px 24px 96px}.content-heading{max-width:760px;margin-bottom:38px}.content-heading h1,.article-body h1{margin:0 0 14px;color:var(--navy);font-size:clamp(34px,4vw,52px);line-height:1.3;letter-spacing:-.04em}.content-heading>p:last-child{color:var(--muted)}.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.post-card{overflow:hidden;border:1px solid var(--line);border-radius:12px;background:white;box-shadow:0 7px 24px rgba(36,52,71,.06)}.post-card-image{display:block;aspect-ratio:16/9;overflow:hidden}.post-card-image img{width:100%;height:100%;object-fit:cover}.post-card-copy{padding:22px}.post-meta{margin:0 0 7px;color:var(--muted);font-size:12px}.post-card h2{margin:0 0 10px;color:var(--navy);font-size:20px;line-height:1.5}.post-card h2 a,.read-more{text-decoration:none}.post-card-copy>p:not(.post-meta){color:var(--muted);font-size:14px}.read-more{color:var(--coral);font-size:13px;font-weight:900}.pagination{grid-column:1/-1;margin-top:24px}.article-shell{max-width:900px}.article-body>header{margin-bottom:38px}.article-hero{margin-top:26px;overflow:hidden;border-radius:14px}.article-hero img{width:100%;height:auto}.article-content{font-size:17px;line-height:2}.article-content h2{margin:2.4em 0 .8em;padding-bottom:10px;border-bottom:2px solid var(--navy);color:var(--navy);font-size:30px}.article-content h3{margin:2em 0 .6em;color:var(--navy);font-size:23px}.article-content a{color:var(--coral);text-underline-offset:3px}.article-content img{height:auto;border-radius:10px}

@media(max-width:900px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:782px){.admin-bar .topbar{top:46px}}
@media(max-width:767px){.unknown-guide-heading{display:block}.unknown-guide-heading span{margin-bottom:7px}.post-grid{grid-template-columns:1fr}.content-shell,.article-shell{padding:48px 20px 70px}.article-content{font-size:16px}.article-content h2{font-size:25px}}