@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;800&family=Noto+Serif+JP:wght@500;600;700&display=swap');
:root{--ink:#242b3b;--muted:#777c84;--orange:#f96b32;--navy:#35446f;--cream:#fcf8f5;--line:#e8e8e7}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;color:var(--ink);font-family:'Noto Sans JP',sans-serif;font-size:14px;background:#fff;line-height:1.8}a{color:inherit;text-decoration:none}button,input,select{font:inherit}a,button,input,select,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #f99e6a;outline-offset:4px}button,a,summary{touch-action:manipulation}button,summary{cursor:pointer}button{border:0}input,select{min-width:0}h1,h2,h3,p{margin:0}h2{font-family:'Noto Serif JP',serif;font-weight:600;font-size:32px;line-height:1.7;letter-spacing:.02em}.wrap{max-width:1160px;width:calc(100% - 96px);margin-inline:auto}.narrow{max-width:976px;width:calc(100% - 96px);margin-inline:auto}.header{height:106px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:21px;letter-spacing:-.06em}.brand small{display:block;font-size:9px;font-weight:400;letter-spacing:.12em;margin-top:-2px}.brand-icon{font-family:Georgia,serif;font-size:42px;line-height:1;color:var(--orange);letter-spacing:-.12em}.brand-icon span{color:var(--ink);font-size:27px}.header nav{display:flex;gap:30px;font-size:12px;font-weight:500}.header nav .active{color:var(--orange)}.header-button{background:var(--ink);color:white;border-radius:5px;padding:10px 24px;font-size:12px}.header-button span{margin-left:18px}.hero{position:relative;border-radius:20px;background:linear-gradient(105deg,rgba(34,61,82,.79),rgba(39,45,81,.55)),url('/assets/hero.jpg') center 53%/cover;padding:58px 72px 40px;min-height:567px;box-shadow:0 24px 40px -38px #263b60}.hero-copy{color:#fff;display:flex;justify-content:space-between;align-items:center;gap:30px}.eyebrow{font-size:10px;letter-spacing:.19em;font-weight:600;color:var(--orange);margin-bottom:14px}.eyebrow.light{color:#f7ded0;font-size:10px}h1{font-family:'Noto Serif JP',serif;font-size:46px;font-weight:600;line-height:1.6;letter-spacing:.045em}h1 span{color:#ffddc4}.hero-sub{font-size:12px;margin-top:14px;color:#f3f1ef}.hero-note{margin-right:5px;font-size:17px;line-height:1.8}.note-line{display:block;width:28px;height:2px;background:#ffac7b;margin-bottom:18px}.hero-badges{display:flex;gap:8px;margin:16px 0 8px}.hero-badges span{font-size:10px;border:1px solid #ffffff85;padding:3px 12px;border-radius:20px}.hero-note small{font-size:9px;color:#eee}.checker{background:#fff;border-radius:13px;margin-top:30px;padding:22px 28px 18px;box-shadow:0 10px 28px #13294116}.form-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;margin-bottom:18px}.form-top>span{font-size:10px;color:var(--muted)}.step-tag{color:var(--orange);font-size:10px;margin-right:7px}.fields{display:grid;grid-template-columns:1.13fr 1fr 1.05fr 1.25fr}.fields>label{padding:0 17px;border-right:1px solid var(--line);font-size:10px;color:var(--muted)}.fields>label:first-child{padding-left:0}.fields>label:last-child{border-right:0;padding-right:0}.fields select,.input-unit{margin-top:8px;width:100%;height:37px;border:0;color:var(--ink);font-size:13px;background:#fff}.fields select{padding:0 20px 0 0}.input-unit{display:flex;align-items:center;gap:8px}.input-unit input{width:100%;border:0;font-size:19px;font-weight:500;color:var(--ink);padding:2px 0}.input-unit input::placeholder{color:#b1b2b7;font-size:15px;font-weight:400}.input-unit span{font-size:11px}.optional{margin-top:16px;border-top:1px solid var(--line);font-size:10px}.optional summary{padding-top:10px;color:#6e737b;list-style:none}.optional summary span{float:right;color:var(--orange)}.optional-fields{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:15px}.optional-fields input,.optional-fields select{width:100%;border:1px solid var(--line);border-radius:4px;padding:8px;margin-top:6px;font-size:11px;background:#fff}.form-bottom{text-align:center;margin-top:14px}.form-bottom p{font-size:10px;color:#70747b;margin-bottom:12px}.lock{color:#788779;margin-right:4px}.primary{background:var(--orange);color:white;border-radius:5px;padding:15px 27px;font-weight:600;font-size:12px;transition:background .2s}.primary:hover{background:#dd5522}.primary span{margin-left:30px}.form-bottom small{display:block;font-size:9px;color:#90939a;margin-top:9px}#form-error{color:#b6381c;font-size:12px;text-align:center}#form-error:empty{display:none}.trust{display:flex;justify-content:center;gap:29px;margin-top:25px;color:#5c6670;font-size:10px}.trust>span{color:#90939a}.trust strong{font-weight:400}.how{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center;padding:103px 0 108px}.section-intro>p:not(.eyebrow){color:var(--muted);font-size:12px;line-height:2.1;margin-top:18px}.text-link{display:inline-flex;gap:35px;border-bottom:1px solid #cdd0d2;padding-bottom:7px;font-size:11px;margin-top:25px}.text-link span{color:var(--orange)}.steps{display:grid;gap:13px}.steps article{display:flex;align-items:center;gap:20px;padding:23px 22px;background:var(--cream);border:1px solid transparent;border-radius:10px}.steps .featured{border-color:#f99a70}.step-icon{flex-shrink:0;width:43px;height:43px;display:grid;place-items:center;border-radius:50%;background:#fff;color:var(--orange);font-family:Georgia,serif;font-size:19px;font-style:italic}.steps h3{font-size:14px;margin-bottom:5px}.steps p{font-size:10px;color:var(--muted)}.guides-section{background:var(--navy);padding:64px 0 73px;color:#fff}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:25px}.section-heading>p{font-size:11px;color:#c9cfdf}.guides-section h2{font-size:29px}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:33px}.guide-card{display:block;background:white;border-radius:8px;color:var(--ink);padding:25px 26px 18px;transition:transform .2s}.guide-card:hover{transform:translateY(-4px)}.guide-kicker{display:flex;justify-content:space-between;font-size:8px;letter-spacing:.08em;color:#8b9098}.guide-kicker span{color:var(--orange);font-family:Georgia,serif;font-size:19px;line-height:1}.guide-card h3{font-family:'Noto Serif JP',serif;font-size:19px;margin:23px 0 12px}.guide-card p{font-size:11px;color:var(--muted);line-height:2}.guide-bottom{border-top:1px solid var(--line);margin-top:23px;padding-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:10px}.guide-bottom b{display:grid;place-items:center;background:#fff0e7;border-radius:50%;width:28px;height:28px;color:var(--orange);font-size:14px}.areas{padding-top:76px;padding-bottom:63px}.date-tag{font-size:10px;color:#7d817f;border:1px solid var(--line);padding:5px 14px;border-radius:20px}.muted{color:var(--muted);font-size:12px;margin-top:12px}.area-links{margin-top:27px;border-top:1px solid var(--line)}.area-row{display:grid;grid-template-columns:105px 1fr;border-bottom:1px solid var(--line);padding:15px 0;font-size:11px;gap:18px}.area-row strong{font-weight:600}.area-row>div{display:flex;gap:9px 23px;flex-wrap:wrap}.area-row a:hover{color:var(--orange)}.usage-links{display:flex;gap:24px;align-items:center;font-size:11px;margin-top:25px}.usage-links a{background:var(--cream);padding:6px 17px;border-radius:4px}.source-note{font-size:10px;color:#858992;line-height:1.9;margin-top:24px}.source-note a{text-decoration:underline;text-underline-offset:3px}.faq{padding:20px 0 80px;max-width:780px}.faq h2{margin-bottom:25px}.faq details{border-bottom:1px solid var(--line);padding:20px 0;font-size:12px}.faq summary{list-style:none;position:relative;padding:0 30px 0 28px;font-weight:500}.faq summary:before{content:'Q';position:absolute;left:0;color:var(--orange);font-family:Georgia,serif;font-size:16px}.faq summary:after{content:'＋';position:absolute;right:0;color:#979ba1}.faq details[open] summary:after{content:'−'}.faq details p{color:var(--muted);padding:16px 28px 0;line-height:2}.footer{border-top:1px solid var(--line);padding:35px 0;display:flex;align-items:center;gap:24px}.footer .brand{font-size:16px}.footer .brand-icon{font-size:29px}.footer>p{font-size:10px;color:var(--muted)}.footer>div{display:flex;gap:20px;margin-left:auto;font-size:10px}.footer small{font-size:9px;color:#90949b}.result{padding:35px;margin-top:38px;border:1px solid #f4b291;border-radius:14px;background:#fffaf6}.result h2{font-size:25px}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:22px 0}.stat{background:#fff;padding:20px;border-radius:8px;border:1px solid var(--line)}.stat small{display:block;color:var(--muted);font-size:11px}.stat strong{display:block;font-size:28px;line-height:1.7}.stat.accent strong{color:#d65620}.result p{font-size:12px}.result a{color:#bd4d20;text-decoration:underline}.result h3{font-size:15px;margin-top:20px}.result .source-note{font-size:10px}.annual-fields{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:16px 0}.annual-fields input{width:100%;padding:8px;border:1px solid #ddd;border-radius:4px}.annual-fields 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@media(min-width:1500px){.wrap{max-width:1220px}.hero{padding-inline:80px}.hero-copy h1{font-size:49px}}
@media(max-width:1000px){.wrap,.narrow{width:calc(100% - 48px)}.hero{padding:38px 35px 30px}h1{font-size:37px}.hero-note{font-size:14px}.header nav{gap:18px}.how{gap:40px;padding-block:75px}h2{font-size:27px}.fields>label{padding-inline:10px}.trust{gap:18px}.guide-card{padding:22px 20px}.footer{flex-wrap:wrap}.footer small{width:100%}.footer>div{margin-left:auto}}
@media(max-width:680px){.wrap,.narrow{width:calc(100% - 32px)}.header{height:82px;gap:10px}.brand{font-size:18px}.brand-icon{font-size:35px}.header nav{display:none}.header-button{padding:8px 14px;font-size:11px}.header-button span{margin-left:8px}.hero{padding:29px 16px 20px;border-radius:14px}.hero-copy{padding:0 8px}.hero-note{display:none}h1{font-size:33px}.hero-sub{font-size:10px}.hero .eyebrow{font-size:8px}.checker{padding:17px 17px 16px;margin-top:25px}.form-top>span{font-size:8px}.fields{grid-template-columns:1fr 1fr;gap:18px 14px}.fields>label{padding:0!important;border-right:0}.fields select{font-size:11px;border-bottom:1px solid var(--line);height:36px}.input-unit{border-bottom:1px solid var(--line)}.input-unit input{font-size:17px}.optional-fields{grid-template-columns:1fr 1fr}.optional summary{font-size:9px}.optional summary span{float:none;display:block}.primary{width:100%;padding:14px 10px;font-size:11px}.primary span{margin-left:18px}.form-bottom p{font-size:9px}.trust{flex-wrap:wrap;gap:7px 14px;margin-top:18px;font-size:8px}.trust>span{width:100%;text-align:center}.how{grid-template-columns:1fr;gap:32px;padding:58px 13px}.section-intro h2{font-size:27px}.section-intro>p:not(.eyebrow){font-size:11px}.steps article{padding:19px}.guides-section{padding:42px 0}.section-heading{align-items:start;flex-direction:column;gap:12px}.guides-section h2{font-size:25px}.guide-grid{grid-template-columns:1fr;gap:14px;margin-top:25px}.guide-card{padding:22px}.guide-card h3{margin:14px 0 8px}.guide-card p br{display:none}.guide-bottom{margin-top:16px}.areas{padding:46px 0}.areas h2{font-size:25px}.area-row{grid-template-columns:72px 1fr;gap:6px;font-size:10px}.area-row>div{gap:8px 15px}.usage-links{gap:8px;flex-wrap:wrap;font-size:10px}.usage-links strong{width:100%;margin-bottom:4px}.usage-links a{padding:6px 13px}.faq{padding:12px 5px 48px}.faq h2{font-size:26px}.faq details{font-size:11px}.footer{gap:15px;padding:25px 0}.footer>p{display:none}.footer>div{width:100%;margin:0}.result{padding:22px 18px}.result h2{font-size:20px}.result-grid{grid-template-columns:1fr;gap:10px}.stat{padding:14px}.stat strong{font-size:25px}.annual-fields{grid-template-columns:repeat(3,1fr)}.article{padding-top:20px}.article h1{font-size:27px}.article p,.article li{font-size:13px}th,td{padding:12px 6px;font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media(max-width:680px){h1{font-size:27px}}
.affiliate-slot{margin:28px 0;padding:24px;border:1px solid #edcfbb;border-radius:10px;background:#fff5ec}.affiliate-slot .affiliate-label{font-size:10px;color:#805a45;letter-spacing:.08em}.affiliate-slot h3{font-size:17px;margin:8px 0 10px}.affiliate-slot p{font-size:12px;margin:0 0 16px}.affiliate-slot small{display:block;font-size:10px;color:#777;margin-top:10px}.affiliate-slot .primary:disabled{background:#d9c3b6;color:#51463f;cursor:not-allowed}.affiliate-slot .primary:disabled:hover{background:#d9c3b6}
.footer>div{flex-wrap:wrap}.article-callout a[href^="mailto:"]{overflow-wrap:anywhere}
.article td a[href^="mailto:"]{overflow-wrap:anywhere}.footer{flex-wrap:wrap}