@font-face{font-family:Inter;src:url('/assets/inter-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/inter-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/inter-700.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:Inter;src:url('/assets/inter-800.woff2') format('woff2');font-weight:800;font-display:swap}
:root{--paper:#f7f7f2;--ink:#172923;--muted:#4e625a;--line:#d8ded6;--green:#c8e5b0;--violet:#e3dbf5;--pink:#eed9ce;--yellow:#f0e7ab;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,'Hiragino Sans','Yu Gothic',sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:4px}button,input,textarea,select{font:inherit}button,a,input,textarea,select{touch-action:manipulation}button{cursor:pointer}a,button{ -webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #446bc4;outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.08;letter-spacing:-.045em}h1{font-size:clamp(48px,6vw,82px);font-weight:800}h2{font-size:clamp(32px,4vw,48px);font-weight:700}h3{font-size:25px;font-weight:700}p{color:var(--muted);margin-bottom:20px}img{display:block;max-width:100%}[hidden]{display:none!important}
.skip{position:fixed;left:16px;top:-100px;z-index:100;background:var(--ink);color:white;padding:12px 24px}.skip:focus{top:16px}
.site-header{border-bottom:1px solid var(--line);background:var(--paper);position:relative;z-index:20}.nav-shell{max-width:var(--max);margin:auto;display:flex;align-items:center;justify-content:space-between;padding:20px 0;gap:28px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:18px;font-weight:700;line-height:1.15;letter-spacing:-.5px;flex-shrink:0}.brand img{border-radius:9px}.brand-sub{display:block;font-size:11px;font-weight:500;margin-top:3px;color:var(--muted);letter-spacing:0}nav#site-nav{display:flex;align-items:center;gap:24px;font-size:13px;font-weight:500}nav#site-nav>a:not(.button){text-decoration:none}nav#site-nav>a:hover{text-decoration:underline}.language-nav{display:flex;gap:10px;font-size:11px;white-space:nowrap}.language-nav a{color:var(--muted);text-decoration:none}.language-nav [aria-current]{color:var(--ink);text-decoration:underline;font-weight:700}.nav-toggle{display:none;background:none;border:1px solid var(--line);padding:7px 13px;border-radius:7px;font-size:24px}
main{max-width:var(--max);margin:auto}.button{display:inline-flex;justify-content:center;align-items:center;gap:22px;min-height:54px;padding:15px 24px;border-radius:8px;border:1px solid transparent;text-decoration:none;font-size:14px;line-height:1.4;font-weight:700;letter-spacing:-.02em;transition:transform .16s,background .16s}.button:hover{transform:translateY(-2px)}.button.dark{background:var(--ink);color:#fff}.button.dark:hover{background:#315646}.button.outline{border-color:var(--ink);background:transparent;color:var(--ink)}.button.small{min-height:44px;padding:11px 16px;font-size:12px;gap:12px}.text-link{font-size:14px;font-weight:700;display:inline-flex;align-items:center;gap:12px}.eyebrow{font-size:11px;line-height:1.5;display:flex;align-items:center;gap:10px;text-transform:uppercase;letter-spacing:1.3px;font-weight:700;margin-bottom:24px;color:var(--ink)}.tiny-square{width:8px;height:8px;background:var(--ink);display:inline-block}.lead{font-size:18px;line-height:1.7;max-width:550px}.store-note{font-size:11px;line-height:1.65;margin-top:20px;max-width:470px}.hero{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:64px;padding:70px 0 90px}.hero h1{max-width:690px;margin-bottom:24px}.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:30px}.mini-proof{display:flex;gap:13px;align-items:center;font-size:11px;font-weight:500;margin-top:38px;color:var(--muted)}.hero-art{height:595px;background:var(--green);border-radius:160px 160px 24px 24px;position:relative;display:flex;align-items:center;justify-content:center;margin-top:30px}.hero-art:before{content:'';position:absolute;inset:35px;border:1px solid #9cbe82;border-radius:140px 140px 12px 12px}.phone-figure{position:relative;z-index:2;margin:0;width:258px;flex-shrink:0}.phone{border:7px solid #17211f;border-radius:38px;overflow:hidden;box-shadow:12px 20px 0 #17292318;background:#fff}.phone img{width:100%;height:auto}.phone-figure figcaption{font-size:9px;line-height:1.5;text-align:center;margin-top:15px;color:var(--muted)}.paper-label{position:absolute;top:10px;left:-35px;background:var(--yellow);font-size:17px;font-weight:800;line-height:1.2;letter-spacing:-.02em;padding:25px 26px;transform:rotate(-9deg);border:1px solid #17292326;z-index:3;box-shadow:4px 5px 0 #17292312}.paper-label span{display:block;font-size:33px;margin-top:7px}.floating-tag{position:absolute;right:-15px;bottom:100px;z-index:3;background:var(--violet);border:1px solid #17292340;padding:13px 20px;border-radius:8px;font-size:20px;font-weight:700;transform:rotate(8deg)}
.section-heading{max-width:630px;margin-bottom:42px}.section-heading h2{margin-bottom:18px}.section-heading p{font-size:16px}.features{border-top:1px solid var(--line);padding:70px 0}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:42px}.feature-grid article{padding-right:26px}.feature-icon{display:flex;align-items:center;justify-content:center;background:var(--violet);height:54px;width:54px;font-size:31px;line-height:1;border-radius:50%;margin-bottom:24px}.feature-grid article:nth-child(2) .feature-icon{background:var(--green)}.feature-grid article:nth-child(3) .feature-icon{background:var(--pink)}.feature-grid h3{font-size:23px;line-height:1.2;margin-bottom:13px}.feature-grid p{font-size:14px;line-height:1.8}.steps{padding:60px;background:var(--ink);color:white;border-radius:16px;display:grid;grid-template-columns:1fr 1fr;gap:85px}.steps h2{font-size:46px;max-width:460px}.steps .eyebrow{color:var(--green)}.steps .text-link{color:var(--green)}.steps ol{list-style:none;padding:0;margin:0}.steps li{display:flex;gap:26px;padding:22px 0;border-top:1px solid #ffffff30}.steps li:first-child{border-top:0;padding-top:0}.step-no{font-size:12px;color:var(--green);padding-top:5px}.steps h3{font-size:21px;line-height:1.3;margin-bottom:8px}.steps p{color:#d4ddd6;font-size:13px;line-height:1.8;margin-bottom:0}.guide-section{padding:80px 0}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.guide-card{background:var(--violet);border-radius:12px;padding:28px;text-decoration:none;display:flex;flex-direction:column;min-height:330px;border:1px solid #17292312;transition:transform .18s}.guide-card:hover{transform:translateY(-5px)}.card-1{background:var(--green)}.card-2{background:var(--pink)}.card-3{background:var(--yellow)}.card-top{display:flex;justify-content:space-between;gap:16px;font-size:10px;line-height:1.4;text-transform:uppercase;letter-spacing:.8px;font-weight:700;margin-bottom:28px}.guide-card h3{font-size:26px;line-height:1.13;margin-bottom:17px}.guide-card p{font-size:13px;line-height:1.7}.card-link{display:flex;justify-content:space-between;font-size:12px;font-weight:700;margin-top:auto;padding-top:16px;border-top:1px solid #17292330}.template-callout{display:flex;align-items:center;justify-content:space-between;gap:30px;border:1px solid var(--ink);border-radius:12px;padding:28px 34px;margin-top:24px;text-decoration:none}.template-callout .eyebrow{margin-bottom:12px}.template-callout h3{font-size:29px;margin:0}.circle-arrow{flex-shrink:0;height:52px;width:52px;border-radius:50%;background:var(--ink);color:white;display:flex;align-items:center;justify-content:center;font-size:26px}
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px;border-top:1px solid var(--line);padding:60px 0 70px}.faq h2{font-size:36px}.faq details{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:15px;line-height:1.5;font-weight:500;padding:22px 0;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq summary span{font-size:22px}.faq details[open] summary span{transform:rotate(45deg)}.faq details p{font-size:14px;line-height:1.8;max-width:560px}.end-cta{background:var(--green);border:1px solid #17292312;border-radius:16px;padding:55px 60px;position:relative;overflow:hidden;margin-bottom:70px}.end-cta>div{position:relative;z-index:1;max-width:690px}.end-cta h2{font-size:52px}.end-cta p:not(.store-note){max-width:570px}.cta-mark{font-size:250px;position:absolute;line-height:1;right:50px;top:45px;opacity:.12;transform:rotate(-12deg)}footer{border-top:1px solid var(--line);max-width:var(--max);margin:auto;padding:38px 0 24px}.footer-main{display:flex;gap:40px;justify-content:space-between}.wordmark{text-decoration:none;font-size:25px;line-height:1.2;font-weight:700;letter-spacing:-1px}.dot{color:#668850}.footer-main p{font-size:12px;margin-top:14px}.footer-links{display:flex;gap:22px;font-size:11px;flex-wrap:wrap;align-self:flex-start;padding-top:10px}.footer-bottom{font-size:10px;color:var(--muted);display:flex;align-items:center;justify-content:space-between;padding-top:24px;border-top:1px solid var(--line)}.install-strip{display:none}.breadcrumbs{display:flex;gap:10px;font-size:11px;color:var(--muted);padding-top:34px;flex-wrap:wrap}.article-hero{padding:50px 0 65px;display:flex;align-items:center;justify-content:space-between;gap:80px;border-bottom:1px solid var(--line)}.article-hero>div{max-width:870px}.article-hero h1{font-size:clamp(36px,4.8vw,65px);margin-bottom:25px}.article-hero .lead{max-width:760px}.article-phone{width:180px;flex-shrink:0}.article-phone .phone{border-radius:27px;border-width:5px}.byline{font-size:11px;margin-top:30px}.article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(0,260px);gap:100px;padding:65px 0}.article-body section{margin-bottom:45px}.article-body h2{font-size:29px;line-height:1.2;margin-bottom:17px}.article-body p{font-size:16px;line-height:1.9}.article-sidebar .toc{border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:30px}.toc h2{font-size:11px;letter-spacing:.6px;text-transform:uppercase}.toc ol{margin:0;padding-left:17px}.toc li{font-size:12px;margin:15px 0;line-height:1.6}.toc a{text-decoration:none}.toc a:hover{text-decoration:underline}.sidebar-promo{background:var(--violet);border-radius:12px;padding:26px}.sidebar-promo img{border-radius:10px;margin-bottom:20px}.sidebar-promo h3{font-size:22px}.sidebar-promo p{font-size:12px;line-height:1.8}.sidebar-promo .button{width:100%}.sidebar-promo .small-text{font-size:10px;margin-top:16px}.related{border-top:1px solid var(--line);padding-top:50px}.related h2{font-size:32px;margin-bottom:30px}.example{background:white;border:1px solid var(--line);border-radius:12px;padding:30px;margin-bottom:35px}.example .eyebrow{margin-bottom:15px}.example table{width:100%;border-collapse:collapse;font-size:12px}.example td,.example th{text-align:left;padding:12px 7px;border-bottom:1px solid var(--line);font-weight:400}.example thead th{font-weight:700}.example-total{display:flex;gap:25px;justify-content:space-between;padding:22px 6px;font-size:15px}.example p{font-size:12px;margin-bottom:0}.editorial-note{border-left:2px solid var(--ink);padding:0 0 0 20px}.editorial-note p,.editorial-note a{font-size:12px}.table-scroll{overflow-x:auto}.not-found{padding:100px 0 160px}.not-found h1{font-size:48px;max-width:800px}
.tool-section{padding:55px 0;border-bottom:1px solid var(--line)}.tool-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:38px}.form-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.reset-button{font-size:10px;background:none;border:0;text-decoration:underline;padding:0;color:var(--muted)}form label{display:flex;flex-direction:column;gap:7px;font-size:12px;font-weight:700;margin-bottom:18px}input,textarea,select{border:1px solid #bdc8bf;border-radius:6px;padding:11px 12px;width:100%;background:white;color:var(--ink);font-size:14px;line-height:1.4}textarea{resize:vertical}input:invalid:not(:placeholder-shown){border-color:#bdc8bf}input[aria-invalid=true],textarea[aria-invalid=true]{border:2px solid #ae302d}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.small-text{font-size:11px;line-height:1.7}fieldset{margin:0 0 20px;padding:0;border:0}legend{font-size:12px;font-weight:700;margin-bottom:12px}.item-row{display:grid;grid-template-columns:minmax(0,1fr) 70px 95px 36px;gap:8px;align-items:end;margin-bottom:8px}.item-row label{margin-bottom:0;font-size:9px;font-weight:500}.item-row input{padding:9px 7px;font-size:12px}.remove-item{border:1px solid var(--line);border-radius:6px;height:38px;background:white;color:var(--ink);font-size:19px}.privacy-hint{font-size:11px;border-top:1px solid var(--line);padding-top:18px}.tool-status{font-size:12px;min-height:20px;margin-top:12px}.preview-wrap{min-width:0}#invoice-preview{background:white;border:1px solid var(--line);padding:35px 30px;min-height:620px;box-shadow:10px 12px 0 #17292308;overflow-wrap:anywhere;font-size:11px;color:var(--ink)}.invoice-heading{display:flex;justify-content:space-between;gap:20px;border-bottom:2px solid var(--ink);padding-bottom:20px;align-items:center}.invoice-heading strong{font-size:23px;letter-spacing:-.05em}.invoice-heading span{font-size:12px}.invoice-parties{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:25px 0}.invoice-parties span,.invoice-notes span{font-size:9px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}#invoice-preview p{white-space:pre-wrap;color:var(--ink);font-size:11px;line-height:1.6;margin-top:6px;margin-bottom:0}.invoice-dates{display:flex;gap:25px;margin-bottom:25px}.invoice-dates p{display:flex;flex-direction:column}.invoice-dates span{color:var(--muted);font-size:9px}.invoice-dates b{font-weight:400;margin-top:4px}#invoice-preview table{width:100%;border-collapse:collapse;font-size:10px;table-layout:fixed}#invoice-preview th,#invoice-preview td{text-align:right;padding:12px 4px;border-bottom:1px solid var(--line);vertical-align:top;font-weight:400}#invoice-preview thead th{background:var(--ink);color:white;font-weight:500}#invoice-preview th:first-child,#invoice-preview td:first-child{text-align:left;width:43%;padding-left:8px}#invoice-preview th:nth-child(2){width:13%}.invoice-totals{margin:20px 0 30px 25%}.invoice-totals p{display:flex;gap:18px;justify-content:space-between;padding:7px 0}.invoice-totals .total{border-top:1px solid var(--ink);margin-top:12px!important;font-size:14px!important;font-weight:700}.invoice-notes{border-top:1px solid var(--line);padding-top:20px}
html[lang=ja] h1,html[lang=ja] h2,html[lang=ja] h3{letter-spacing:-.025em;line-height:1.35}html[lang=ja] .eyebrow{letter-spacing:.5px}html[lang=ja] .hero h1{font-size:clamp(40px,4.8vw,61px)}html[lang=ja] .card-top{text-transform:none}
@media(max-width:1280px){.nav-shell,main,footer{margin-left:40px;margin-right:40px}.hero{gap:40px}nav#site-nav{gap:18px}.hero-art{height:565px}.phone-figure{width:245px}.article-phone{width:160px}.article-layout{gap:65px}}
@media(max-width:1050px){nav#site-nav{gap:15px}nav#site-nav .button{display:none}.hero{gap:35px}.hero-art{height:510px}.phone-figure{width:220px}.article-phone{width:150px}.hero h1{font-size:62px}.paper-label{left:-20px;padding:18px;font-size:14px}.guide-card{padding:22px}.guide-card h3{font-size:23px}.steps{gap:45px;padding:40px}.steps h2{font-size:39px}.article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 220px}.tool-grid{gap:24px}.item-row{grid-template-columns:minmax(0,1fr) 60px 75px 30px}.tool-grid #invoice-preview{padding:24px 20px}}
@media(max-width:760px){.nav-shell,main,footer{margin-left:22px;margin-right:22px}.nav-shell{padding:15px 0}.brand{font-size:17px}.brand img{width:34px;height:34px}.nav-toggle{display:block}nav#site-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:22px;align-items:flex-start;gap:20px;box-shadow:0 15px 25px #1729230d}nav#site-nav.open{display:flex;flex-direction:column}.language-nav{font-size:13px;gap:22px}.hero{grid-template-columns:1fr;padding:45px 0 55px;gap:35px}.hero h1{font-size:clamp(46px,10vw,66px);max-width:600px}.hero .lead{font-size:17px}.hero-actions{gap:18px;margin-top:24px}.hero-art{max-width:390px;width:100%;height:490px;margin:20px auto 0;border-radius:150px 150px 18px 18px}.hero-art:before{inset:26px}.phone-figure{width:215px}.phone{border-radius:32px;border-width:6px}.paper-label{left:-8px;top:18px}.floating-tag{right:-8px;bottom:85px;font-size:16px}.mini-proof{margin-top:25px}.features{padding:45px 0}.feature-grid{grid-template-columns:1fr;gap:18px}.feature-grid article{display:grid;grid-template-columns:48px 1fr;column-gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}.feature-icon{width:45px;height:45px;grid-row:1/3;font-size:25px;margin:0}.feature-grid h3{font-size:23px;margin-bottom:8px}.feature-grid p{margin-bottom:0}.section-heading{margin-bottom:25px}.section-heading .eyebrow{margin-bottom:17px}.steps{padding:32px 25px;grid-template-columns:1fr;gap:30px}.steps h2{font-size:35px}.steps li{gap:20px;padding:22px 0}.steps li:last-child{padding-bottom:0}.guide-section{padding:50px 0}.guide-grid{grid-template-columns:1fr 1fr;gap:14px}.guide-card{padding:21px;min-height:310px}.guide-card h3{font-size:24px}.guide-card p{font-size:12px}.card-top{font-size:9px;margin-bottom:20px}.faq{grid-template-columns:1fr;gap:10px;padding:40px 0 45px}.faq .eyebrow{display:none}.faq h2{font-size:31px}.faq summary{font-size:14px;padding:20px 0}.template-callout{padding:24px;gap:20px}.template-callout h3{font-size:25px}.circle-arrow{width:43px;height:43px;font-size:23px}.end-cta{padding:35px 26px;margin-bottom:45px}.end-cta h2{font-size:36px;max-width:430px}.end-cta p:not(.store-note){font-size:15px}.cta-mark{right:12px;font-size:180px;top:65px}.footer-main{flex-direction:column;gap:15px}.footer-links{padding-top:0;gap:14px 22px}.footer-bottom{align-items:flex-start;gap:20px;font-size:9px}.install-strip{display:flex;align-items:center;gap:10px;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);padding:12px 15px calc(12px + env(safe-area-inset-bottom));z-index:30;box-shadow:0 -4px 15px #17292308}.install-strip img{border-radius:8px;flex-shrink:0}.install-strip>div{display:flex;flex-direction:column;min-width:0}.install-strip strong{font-size:12px;line-height:1.4}.install-strip span{font-size:9px;line-height:1.5;color:var(--muted)}.install-strip .button{margin-left:auto;max-width:150px;font-size:10px;min-height:40px;padding:10px 12px;gap:7px}.install-strip .button span{color:white;font-size:14px}.dismiss-strip{border:0;background:none;font-size:22px;padding:3px 5px;color:var(--muted)}body:has(.install-strip:not([hidden])){padding-bottom:85px}.breadcrumbs{padding-top:24px}.article-hero{padding:32px 0 42px;gap:20px}.article-hero h1{font-size:clamp(34px,7vw,49px)}.article-hero .lead{font-size:16px}.article-phone{display:none}.article-layout{grid-template-columns:1fr;padding:40px 0;gap:15px}.article-sidebar{display:none}.article-body h2{font-size:27px}.article-body p{font-size:15px;line-height:1.85}.article-body section{margin-bottom:32px}.byline{font-size:10px;line-height:1.8}.example{padding:22px}.example p{font-size:11px}.editorial-note p,.editorial-note a{font-size:11px}.tool-section{padding:35px 0}.tool-grid{grid-template-columns:1fr;gap:30px}.preview-wrap{margin:0 0 25px}.tool-grid #invoice-preview{padding:25px 22px}.item-row{grid-template-columns:minmax(0,1fr) 60px 80px 30px}.not-found{padding:65px 0 120px}.not-found h1{font-size:35px}html[lang=ja] .hero h1{font-size:42px}html[lang=ja] .article-hero h1{font-size:34px}}
@media(max-width:440px){.guide-grid{grid-template-columns:1fr}.guide-card{min-height:250px}.guide-card h3{font-size:28px}.guide-card p{font-size:14px}.card-top{font-size:10px}.hero-art{height:470px}.phone-figure{width:205px}.footer-bottom{flex-direction:column;gap:10px}.hero-actions>.button{padding-left:19px;padding-right:19px;font-size:13px}.field-grid{gap:0 12px}.item-row{grid-template-columns:minmax(0,1fr) 50px 65px 28px}.item-row input{font-size:11px}.install-strip .button{max-width:137px}html[lang=ja] .install-strip .button{max-width:120px;font-size:9px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{@page{size:A4;margin:15mm}body{background:white!important;padding:0!important;margin:0!important}body>*{display:none!important}body>main{display:block!important;max-width:none!important;margin:0!important}main>*{display:none!important}main>.tool-section{display:block!important;border:0!important;padding:0!important}.tool-section>*{display:none!important}.tool-section>.tool-grid{display:block!important}.tool-grid>*{display:none!important}.tool-grid>.preview-wrap{display:block!important;margin:0!important}.preview-wrap>*{display:none!important}.preview-wrap>#invoice-preview{display:block!important;border:0!important;box-shadow:none!important;padding:0!important;min-height:0!important;break-inside:auto;font-size:12px}#invoice-preview{color:#000!important}#invoice-preview thead th{color:#000!important;background:#eee!important}#invoice-preview table{font-size:11px}#invoice-preview tr{break-inside:avoid}#invoice-preview p{font-size:12px}.invoice-heading strong{font-size:28px}}