@charset "UTF-8";
:root{--paper:#fff8ef;--white:#ffffff;--ink:#32271f;--text:#40362f;--muted:#756457;--brand:#ff8a2b;--brand-hover:#ef751c;--brand-ink:#98400b;--brand-soft:#fff0dd;--brand-on:#45280f;--teal:var(--brand-ink);--teal-light:var(--brand-soft);--rust:#95420f;--warm:#fff8f0;--line:#ecd8c5;--control-border:#a98265;--serif:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif;--sans:"Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;--content:1180px}
*{box-sizing:border-box}html{scroll-behavior:auto;scroll-padding-top:105px}body{margin:0;background:var(--white);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}h1,h2,h3,p,figure{margin:0}h1,h2,h3{color:var(--ink);line-height:1.5;overflow-wrap:anywhere}.heading-piece{display:inline-block;white-space:nowrap}h1,h2{font-family:var(--sans);font-weight:700;letter-spacing:-.025em}h3{font-size:20px;font-weight:700}a{color:var(--teal);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a,button{touch-action:manipulation}button:disabled{cursor:default}img{max-width:100%;height:auto;display:block}svg{display:block}:focus-visible{outline:3px solid var(--rust);outline-offset:4px}::selection{background:#ffe0bd}.wrap{width:min(var(--content),calc(100% - 80px));margin-inline:auto}.eyebrow{display:block;color:var(--teal);font-size:12px;font-weight:700;letter-spacing:.1em;line-height:1.6}.caption{font-size:12px;color:var(--muted);line-height:1.8}.text-link{font-size:14px;font-weight:700;text-decoration:none;display:inline-flex;align-items:center;gap:14px}.text-link:hover{text-decoration:underline}.button{min-height:48px;padding:12px 22px;display:inline-flex;align-items:center;justify-content:center;gap:24px;border:1px solid var(--teal);border-radius:8px;text-decoration:none;font-size:14px;font-weight:700;line-height:1.5;transition:background .18s,color .18s}.button.solid{color:var(--brand-on);background:var(--brand);border-color:var(--brand)}.button.solid:hover{background:var(--brand-hover)}.button.outline{color:var(--teal);background:transparent}.button.outline:hover{background:var(--teal-light)}.skip-link{position:absolute;left:20px;top:-100px;z-index:100;background:white;padding:10px}.skip-link:focus{top:10px}.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:91px;gap:30px}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-size:21px;line-height:1.3;font-weight:700;flex-shrink:0}.brand>svg{width:42px;height:42px;color:var(--teal)}.brand small{display:block;font-size:10px;font-weight:500;letter-spacing:.08em;line-height:1.6;margin-top:5px}.site-header nav{display:flex;gap:28px;align-items:center}.site-header nav a{display:flex;align-items:center;min-height:44px;font-size:13px;color:var(--ink);font-weight:700;text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent}.site-header nav a:hover,.site-header nav a[aria-current=page]{border-color:var(--teal)}.site-header nav a.nav-about{margin-left:16px;color:var(--muted);font-size:12px}.menu-toggle{display:none;border:1px solid var(--line);border-radius:3px;background:transparent;padding:9px 12px;min-height:44px;color:var(--ink);font-size:12px}.home{background:var(--paper)}.hero{display:grid;grid-template-columns:42% 58%;align-items:center;padding:55px 0 45px;gap:0}.hero-copy{position:relative;z-index:1;padding-right:25px}.hero-copy .eyebrow{margin-bottom:19px}.hero h1{font-size:clamp(36px,3.3vw,49px);line-height:1.62;letter-spacing:.015em}.hero-copy>p:not(.hero-meta){font-size:15px;margin:20px 0 25px;line-height:2.05;color:var(--muted)}.hero-sub-link{display:block;font-size:12px;margin-top:15px;text-underline-offset:5px}.hero-meta{font-size:10px;color:var(--muted);margin-top:24px;line-height:1.75}.hero-art{margin:0;width:100%;align-self:center}.hero-art img{width:100%;aspect-ratio:1.46;object-fit:cover;object-position:56% center;border-radius:2px}.hero-art figcaption{font-size:10px;color:var(--muted);text-align:right;margin-top:9px;letter-spacing:.02em}.decision-intro{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0;display:grid;grid-template-columns:minmax(0,32fr) minmax(0,68fr);gap:30px}.decision-intro h2{font-size:27px;line-height:1.7;margin-top:12px}.decision-options{display:grid;grid-template-columns:1fr 1fr}.decision-options>a{display:flex;align-items:flex-start;gap:14px;text-decoration:none;padding:14px 26px;border-left:1px solid var(--line)}.decision-options>a:hover{background:var(--brand-soft)}.decision-number{font-family:Georgia,serif;font-size:20px;color:var(--rust);line-height:1.6}.decision-options h3{font-size:16px}.decision-options p{font-size:12px;color:var(--muted);margin:8px 0 15px;line-height:1.85}.decision-options .text-link{font-size:12px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:30px}.section-heading h2{font-size:32px;line-height:1.6;margin-top:10px}.section-heading>p{font-size:13px;color:var(--muted);line-height:1.9}.home-comparison{padding:76px 0 65px}.compare-widget{background:var(--white);padding:30px 34px 25px;border:1px solid var(--line);border-top:3px solid var(--teal);border-radius:3px}.widget-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.widget-heading h3{font-family:var(--serif);font-size:25px;margin-top:8px}.data-tag{font-size:11px;color:var(--muted);padding:4px 9px;border:1px solid var(--line);white-space:nowrap}.widget-controls{display:flex;align-items:flex-end;gap:24px;margin-top:25px;padding-bottom:22px;border-bottom:1px solid var(--line)}fieldset{border:0;padding:0;margin:0;min-width:0}legend,.count-control label{font-size:12px;color:var(--muted);padding:0;margin:0 0 7px;display:block;line-height:1.6}.segmented{display:flex;gap:0}.segmented button{color:var(--teal);border:1px solid var(--control-border);background:var(--white);min-height:44px;padding:8px 15px;font-size:12px;white-space:nowrap}.segmented button+button{border-left:0}.segmented button[aria-pressed=true]{background:var(--brand-soft);color:var(--brand-ink);border-color:var(--brand-ink);font-weight:700;box-shadow:inset 0 -2px 0 var(--brand)}.segmented button:hover:not([aria-pressed=true]){background:var(--teal-light)}.count-control select{border:1px solid var(--control-border);border-radius:0;background:var(--white);height:44px;padding:7px 25px 7px 10px;color:var(--ink);font-size:12px}.widget-date{font-size:12px;color:var(--muted);padding:17px 0 14px}.comparison-results{display:grid;grid-template-columns:1fr 1fr;gap:25px}.result{padding:21px 25px;background:var(--teal-light);border-top:1px solid var(--teal)}.result.warm{background:var(--warm);border-color:var(--rust)}.result-title{display:flex;justify-content:space-between;align-items:center;gap:15px}.result-title>span{font-size:16px;color:var(--ink);font-weight:700}.result-title small{font-size:11px;color:var(--muted)}.total{display:flex;align-items:center;gap:6px;padding:13px 0 15px;border-bottom:1px solid var(--line);color:var(--teal)}.warm .total{color:var(--rust);border-color:var(--line)}.total>span:first-child{font-family:Georgia,"Times New Roman",serif;font-size:49px;line-height:1.1;font-weight:400;font-variant-numeric:tabular-nums;letter-spacing:-.035em}.total .unit{font-size:14px;line-height:1.5}.unit>span{display:block;font-size:9px;color:var(--muted)}.breakdown{margin:12px 0 0;font-size:11px;color:var(--text)}.breakdown>div{display:flex;justify-content:space-between;gap:10px;line-height:2}.breakdown dt{font-weight:500}.breakdown dd{margin:0;font-variant-numeric:tabular-nums;white-space:nowrap}.comparison-insight{font-size:13px;padding:20px 0 16px;line-height:1.85;border-bottom:1px solid var(--line)}.comparison-insight strong{display:block;color:var(--ink);font-size:15px;margin-bottom:3px}.conditions{margin:15px 0 5px;font-size:12px;color:var(--muted)}summary{cursor:pointer;color:var(--teal);min-height:36px;line-height:1.8;padding:5px 0}.conditions p{margin:10px 0}.conditions .source-line{margin:10px 0}.text-button{background:none;color:var(--teal);border:0;font-size:12px;padding:10px 0;min-height:44px;text-decoration:underline;text-underline-offset:4px}.text-button span{font-size:17px;margin-left:8px}.copy-status{font-size:11px;color:var(--muted);margin-left:12px}.section-end{display:flex;justify-content:flex-end;margin-top:21px}.reading-guide{padding:35px 0 70px}.guide-features{display:grid;grid-template-columns:1fr 1fr;gap:35px}.guide-feature{text-decoration:none;display:grid;grid-template-columns:40% 60%;border-top:1px solid var(--line);padding-top:22px;align-items:center}.guide-art{height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#ffedd7;color:var(--ink);margin-right:22px}.guide-art.boxes svg{width:105px;height:105px;stroke-width:1}.guide-art.boxes>span{font-family:Georgia,serif;font-size:16px;margin-top:14px;line-height:1.4}.guide-art small{display:block;text-align:center;font-size:10px}.guide-art.dates{background:#fff1de;flex-direction:row;gap:8px}.dates div{background:var(--white);border-top:5px solid var(--rust);width:68px;text-align:center;padding:6px 2px}.dates strong{font-family:Georgia,serif;font-size:29px;font-weight:400;line-height:1.2}.dates small{font-size:10px}.guide-copy h3{font-family:var(--serif);font-size:23px;line-height:1.6;margin-top:9px}.guide-copy p{font-size:12px;line-height:1.8;color:var(--muted);margin:10px 0 15px}.guide-copy .text-link{font-size:12px}.service-index{padding:25px 0 60px}.service-row{display:grid;grid-template-columns:32% 1fr 40px;gap:35px;text-decoration:none;color:var(--text);align-items:center;border-top:1px solid var(--line);padding:25px 0}.service-row:last-child{border-bottom:1px solid var(--line)}.service-row:hover .service-name{text-decoration:underline;text-underline-offset:7px}.service-name{font-family:Georgia,var(--sans);font-size:28px;font-weight:700;line-height:1.5;color:var(--teal)}.service-name.rust{font-family:var(--sans);font-size:25px;color:var(--rust)}.service-row .caption{display:block;margin-top:4px}.service-row p{font-size:13px;color:var(--muted);line-height:1.9}.row-arrow{font-size:23px;justify-self:end;color:var(--teal)}.editorial-promise{display:grid;grid-template-columns:38% 1fr;gap:50px;border-top:1px solid var(--line);padding:40px 0 75px}.editorial-promise h2{font-size:28px;line-height:1.6;margin-top:10px}.editorial-promise p{font-size:13px;color:var(--muted);margin:8px 0 23px}.site-footer{background:var(--brand-soft);color:var(--text);border-top:1px solid var(--line)}.footer-main{padding:42px 0 35px;display:flex;justify-content:space-between;gap:35px}.footer-brand{color:var(--text);font-size:20px}.footer-brand>svg{color:var(--text);width:35px;height:35px}.footer-main p{font-size:11px;line-height:1.9;margin:16px 0 0;color:var(--muted)}.footer-main nav{display:grid;grid-template-columns:1fr 1fr;column-gap:35px;align-content:start}.footer-main nav a{color:var(--text);font-size:12px;text-decoration:none;min-height:40px;display:flex;align-items:center}.footer-main nav a:hover{text-decoration:underline}.footer-bottom{display:flex;gap:22px;justify-content:space-between;border-top:1px solid var(--line);padding:18px 0 24px;font-size:10px;color:var(--muted)}.footer-bottom a{color:white;text-decoration:none}
/* Article types */
.breadcrumbs{display:flex;gap:13px;align-items:center;font-size:11px;color:var(--muted);padding:24px 0}.breadcrumbs a{text-decoration:none}.article-heading{padding:28px 0 42px;max-width:980px}.article-heading h1{font-size:clamp(31px,3vw,44px);line-height:1.6;margin-top:12px;letter-spacing:.01em}.article-lead{font-size:15px;color:var(--muted);line-height:2;max-width:780px;margin-top:23px}.article-meta{display:flex;gap:24px;flex-wrap:wrap;font-size:10px;color:var(--muted);margin-top:22px}.article-meta a{text-decoration:none}.article-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:65px;align-items:start;padding-bottom:70px;border-top:1px solid var(--line)}.toc{position:sticky;top:120px;padding-top:28px}.toc ol{list-style:none;padding:0;margin:16px 0 20px}.toc li{border-bottom:1px solid var(--line)}.toc li a{display:flex;gap:12px;font-size:12px;line-height:1.65;text-decoration:none;padding:12px 0;color:var(--text)}.toc li span{font-family:Georgia,serif;font-size:12px;color:var(--rust);padding-top:1px}.toc li a:hover{color:var(--teal);text-decoration:underline}.toc-policy{font-size:10px;line-height:1.8;display:block}.article-body{min-width:0;max-width:850px}.article-section{padding:42px 0 38px;border-bottom:1px solid var(--line);scroll-margin-top:120px}.article-section h2{font-size:27px;line-height:1.65;margin-bottom:23px}.article-section h3{font-size:19px;margin:28px 0 14px}.article-section p{margin:16px 0;font-size:15px;line-height:2}.article-section strong{font-weight:700;color:var(--ink)}.article-section ul:not(.check-list){padding-left:24px;font-size:14px;line-height:2}.article-section li{padding-left:4px;margin:7px 0}.article-section .caption{font-size:11px;line-height:1.8}.source-line{font-size:10px!important;color:var(--muted);line-height:1.8!important;margin:12px 0 20px!important}.source-line>a{display:inline;color:var(--muted)}.source-line>span{display:block;font-size:10px}.table-scroll{width:100%;overflow-x:auto;margin:20px 0;-webkit-overflow-scrolling:touch}.table-scroll table{border-collapse:collapse;width:100%;min-width:550px;font-size:13px;line-height:1.75;font-variant-numeric:tabular-nums}.table-scroll caption{text-align:left;color:var(--muted);font-size:11px;padding-bottom:11px}.table-scroll th,.table-scroll td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:middle;text-align:left}.table-scroll thead th{background:var(--teal-light);font-weight:700;font-size:11px;color:var(--ink);border-top:1px solid var(--line)}.table-scroll tbody th{background:var(--white);font-weight:500}.table-scroll tbody td{white-space:nowrap}.table-scroll tbody tr:last-child th,.table-scroll tbody tr:last-child td{border-bottom:1px solid var(--line)}.table-scroll th:first-child{position:sticky;left:0;z-index:1;max-width:180px;min-width:140px}.table-scroll thead th:first-child{background:var(--teal-light);z-index:2}.note{border-left:3px solid var(--teal);padding:17px 21px;background:var(--teal-light);margin:24px 0}.note.warm{border-color:var(--rust);background:var(--warm)}.note>strong{font-size:13px;font-weight:700}.note p{font-size:13px;line-height:1.9;margin:8px 0 0}.plan-pairs{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:25px 0}.plan-pairs>div{padding:22px 0;border-top:2px solid var(--teal)}.plan-pairs>div+div{border-color:var(--rust)}.plan-pairs h3{font-size:18px;margin:7px 0 10px}.plan-pairs p{font-size:12px;line-height:1.85;margin:0;color:var(--muted)}.article-section .compare-widget{padding:24px 25px 22px;margin-top:26px}.article-section .widget-heading h3{font-size:22px;margin:8px 0 0}.article-section .widget-controls{gap:12px;flex-wrap:wrap}.article-section .segmented button{font-size:11px;padding:8px 12px}.article-section .comparison-results{gap:15px}.article-section .result{padding:18px}.article-section .result-title{display:block}.article-section .result-title small{display:block;margin-top:5px}.article-section .total>span:first-child{font-size:43px}.article-section .widget-date{font-size:11px;margin:0}.article-section .comparison-insight{font-size:12px;margin:0;line-height:1.9}.article-section .comparison-insight strong{font-size:14px}.article-section .conditions p{font-size:12px;line-height:1.9}.calendar-story{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:27px 0}.calendar-story>div{padding:15px 7px;text-align:center;border-top:3px solid var(--line);background:var(--paper)}.calendar-story>div>span{display:block;font-size:11px;color:var(--muted)}.calendar-story b{display:block;font-size:19px;color:var(--ink);margin:8px 0}.calendar-story small{display:block;font-size:9px;line-height:1.6;color:var(--muted)}.calendar-story .early{border-color:var(--rust);background:var(--warm)}.calendar-story .safe{border-color:var(--teal);background:var(--teal-light)}.anniversary{display:flex;gap:12px;align-items:center;justify-content:space-between;border-block:1px solid var(--line);padding:20px 0;margin:24px 0}.anniversary>div{flex:1}.anniversary span{display:block;font-size:10px;color:var(--muted)}.anniversary strong{display:block;font-size:17px;color:var(--teal);margin-top:7px}.box-pair{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin:25px 0;background:var(--paper);padding:15px 22px 25px}.box-drawing{text-align:center}.box-drawing .cube{width:100%;max-width:230px;margin:auto}.cube svg{width:100%;height:auto}.box-drawing h3{font-size:15px;margin:0 0 8px}.box-drawing .dimension{font-family:Georgia,var(--sans);font-size:20px;letter-spacing:.01em;margin:0;line-height:1.6}.dimension small{font-family:var(--sans);font-size:11px}.box-drawing .caption{font-size:10px;margin:7px 0 0}.check-list{list-style:none;padding:0;margin:20px 0;font-size:14px;line-height:1.9}.check-list li{position:relative;padding:10px 0 10px 28px;border-bottom:1px solid var(--line)}.check-list li:before{content:'✓';position:absolute;left:1px;color:var(--teal);font-weight:700}.official-panel{padding:23px 0;border-top:1px solid var(--line);margin:25px 0;display:flex;flex-direction:column;align-items:flex-start;gap:13px}.official-panel h3{margin:8px 0;font-size:18px}.official-panel p{margin:0;font-size:13px;line-height:1.85;color:var(--muted)}.official-panel .button{margin-top:5px;gap:20px}.inline-next{display:inline-flex;align-items:center;gap:15px;padding:12px 0;font-size:13px;font-weight:700;text-decoration:none;min-height:44px}.related{padding:37px 0 0}.related h2{font-family:var(--serif);font-size:23px;margin-bottom:20px}.related-list{border-top:1px solid var(--line)}.related-list a{display:grid;grid-template-columns:95px 1fr 20px;align-items:center;gap:20px;padding:16px 0;border-bottom:1px solid var(--line);text-decoration:none}.related-list a>span:first-child{font-size:10px;color:var(--muted)}.related-list strong{font-size:13px;color:var(--ink)}.related-list a:hover strong{text-decoration:underline}.info-list{margin:20px 0;font-size:14px}.info-list>div{display:grid;grid-template-columns:170px 1fr;gap:25px;border-bottom:1px solid var(--line);padding:17px 0}.info-list dt{font-weight:700}.info-list dd{margin:0;overflow-wrap:anywhere}.formula{font-size:17px;font-weight:700;line-height:1.85;background:var(--paper);padding:25px;border-left:3px solid var(--teal);margin:20px 0}.download-links{display:flex;gap:15px;flex-wrap:wrap;margin:23px 0}.contact-form{margin-top:25px}.contact-form>div{margin-bottom:23px}.contact-form label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}.contact-form label span{font-size:10px;font-weight:400;margin-left:7px;color:var(--muted)}.contact-form input,.contact-form select,.contact-form textarea{width:100%;background:var(--white);border:1px solid var(--control-border);border-radius:2px;padding:11px 12px;font-size:14px;color:var(--ink)}.contact-form textarea{resize:vertical;line-height:1.9}.contact-form input[aria-invalid=true],.contact-form textarea[aria-invalid=true]{border-color:var(--rust)}.form-actions{display:flex;flex-wrap:wrap;gap:13px}.form-status{font-size:13px!important;color:var(--rust)}.not-found{min-height:55vh;padding:70px 0}.not-found h1{font-size:38px;margin:15px 0}.not-found p{margin:25px 0}
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