:root{--paper:#f5f3ed;--white:#fffefa;--ink:#1d3439;--muted:#526469;--line:#d9dfd8;--accent:#14685f;--soft:#e6eee8;--warm:#ede1ce;--max:1100px;--serif:"Yu Mincho","Hiragino Mincho ProN",serif;--sans:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.9;overflow-wrap:anywhere}a{color:var(--accent);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #c38636;outline-offset:4px}.skip{position:absolute;left:12px;top:-80px;padding:12px;background:white;z-index:100}.skip:focus{top:10px}.shell{max-width:var(--max);margin:auto;padding:0 30px}.preview-banner{padding:8px 22px;background:var(--warm);font-size:12px;text-align:center;color:#50462d}.mast{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 0;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-size:17px;font-weight:700;letter-spacing:.03em}.brand-mark{display:inline-grid;place-items:center;width:36px;height:36px;border:1px solid var(--ink);border-radius:50%;font-family:var(--serif);font-size:16px;font-weight:400}.nav{display:flex;gap:24px;font-size:13px}.nav a{color:var(--ink);text-decoration:none}.crumbs{font-size:12px;margin:25px 0;color:var(--muted)}.crumbs a{color:var(--muted)}.hero{display:grid;grid-template-columns:1.35fr 1fr;gap:58px;align-items:center;padding:58px 0 48px}.eyebrow{font-size:11px;letter-spacing:.16em;font-weight:700;color:var(--accent);margin:0 0 20px}.hero h1{font-family:var(--serif);font-size:clamp(30px,3.7vw,44px);line-height:1.6;letter-spacing:.035em;font-weight:500;margin:0 0 24px}.lead{font-size:15px;line-height:2;max-width:550px;color:var(--muted);margin:0 0 28px}.button{display:inline-flex;align-items:center;justify-content:center;gap:22px;padding:12px 22px;border-radius:4px;background:var(--accent);color:white;text-decoration:none;border:1px solid var(--accent);font-size:14px;font-weight:600;min-height:46px}.button.secondary{background:transparent;color:var(--accent)}.button:hover{filter:brightness(.95)}.button[disabled]{opacity:.5;cursor:default}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.note-card{background:var(--white);border:1px solid var(--line);border-radius:9px;padding:30px;box-shadow:12px 12px 0 #e7e8df;transform:rotate(1deg)}.note-label{font-size:11px;letter-spacing:.15em;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:13px}.note-card h2{font-family:var(--serif);font-weight:500;font-size:24px;line-height:1.6;margin:22px 0 14px}.rule-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-top:1px solid var(--line);gap:14px;font-size:13px}.circle-number{display:inline-grid;place-items:center;border-radius:50%;background:var(--soft);height:28px;width:28px;flex-shrink:0;font-size:12px;margin-right:10px}.rule-row strong{font-size:15px;font-weight:500}.tiny{font-size:12px;color:var(--muted)}.strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;margin-bottom:54px}.strip>div{font-size:13px}.strip strong{display:block;font-weight:600;font-size:15px}.section{padding-bottom:54px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:23px}.section-head h2{font-family:var(--serif);font-size:27px;line-height:1.5;font-weight:500;margin:0}.section-head p{font-size:12px;color:var(--muted);margin:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{display:flex;flex-direction:column;background:var(--white);padding:26px;border:1px solid var(--line);border-radius:6px}.card small{font-size:11px;color:var(--accent);letter-spacing:.07em}.card h3{font-size:18px;line-height:1.7;margin:13px 0}.card p{font-size:14px;color:var(--muted);margin:0 0 19px}.card a{margin-top:auto;font-weight:600;font-size:13px}.guide-panel{background:var(--soft);padding:33px;border-radius:8px}.guide-panel h2{font-family:var(--serif);font-weight:500;font-size:27px;margin:0 0 10px}.guide-panel>p{font-size:14px;margin:0 0 20px;color:var(--muted)}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.form-grid.three{grid-template-columns:repeat(3,1fr)}label{display:block;font-size:13px;font-weight:600;margin-bottom:7px}input,select,textarea{width:100%;padding:11px 12px;border:1px solid #a9b9b0;background:var(--white);border-radius:4px;color:var(--ink);font-size:15px}input[type=checkbox]{width:18px;min-height:18px}textarea{line-height:1.8}.helper{font-size:12px;color:var(--muted);margin:7px 0 0}.form-actions{margin-top:24px}.result{background:var(--white);padding:22px 25px;margin-top:24px;border-left:4px solid var(--accent);border-radius:3px}.result[hidden]{display:none}.result h3{font-size:19px;margin:0 0 8px}.result p{font-size:14px;margin:8px 0}.result .big{font-size:36px;font-weight:500;line-height:1.4}.pill{display:inline-block;padding:3px 10px;border:1px solid var(--line);border-radius:30px;font-size:11px;color:var(--muted);margin-bottom:12px}.article-header{max-width:850px;padding:18px 0 27px}.article-header h1{font-family:var(--serif);font-size:clamp(27px,4vw,38px);font-weight:500;line-height:1.65;margin:9px 0 14px}.article-layout{display:grid;grid-template-columns:minmax(0,740px) 230px;gap:50px;align-items:start}.article-body{padding-bottom:55px;min-width:0}.article-body h2{font-family:var(--serif);font-weight:500;font-size:25px;margin:38px 0 16px;line-height:1.6}.article-body h3{font-size:18px;line-height:1.7;margin:26px 0 12px}.article-body p{font-size:15px;margin:16px 0}.article-body ul,.article-body ol{padding-left:24px;font-size:15px}.article-body li{margin:8px 0}.article-body .guide-panel h2{margin-top:0}.aside{border-top:2px solid var(--ink);padding-top:15px;margin-top:7px;font-size:13px}.aside a{display:block;padding:10px 0;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}.callout{background:var(--warm);padding:20px 24px;border-radius:4px;margin:25px 0;font-size:14px}.callout p{margin:0}.checklist{padding:0!important;list-style:none}.checklist li{border-bottom:1px solid var(--line);padding:12px 0;display:flex;gap:13px}.checklist li:before{content:'□';color:var(--accent)}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:5px;margin:22px 0}table{width:100%;border-collapse:collapse;font-size:13px;background:var(--white)}th,td{text-align:left;padding:16px;border-bottom:1px solid var(--line);vertical-align:top;min-width:120px}th{background:var(--soft);font-weight:600}tr:last-child td{border-bottom:0}.sources{border-top:1px solid var(--line);margin-top:36px;padding-top:20px}.sources h2{font-family:var(--sans);font-size:15px;margin:0 0 12px}.sources p,.sources a{font-size:12px}.sources ul{font-size:12px;padding-left:20px}.review-date{font-size:12px;color:var(--muted)}.disclosure-note{font-size:12px;background:#efefea;border-radius:3px;padding:12px 16px;line-height:1.8;margin:14px 0 24px}.footer{border-top:1px solid var(--line);padding:30px 0 24px;margin-top:5px;display:flex;align-items:start;justify-content:space-between;gap:22px}.footer p{font-size:11px;color:var(--muted);max-width:510px;margin:0 0 8px}.footer nav{display:flex;gap:17px;flex-wrap:wrap;font-size:11px}.footer nav a{color:var(--muted)}.footer-note{font-size:11px;color:var(--muted);padding-bottom:24px}.error{color:#8a281f;font-size:13px}.copy-message{font-size:12px}.reading-card{padding:22px;background:var(--white);border:1px solid var(--line);border-radius:5px;margin:18px 0}.reading-card h3{margin-top:0}.inline-pair{display:flex;gap:12px;align-items:baseline}.inline-pair input{max-width:180px}details{border:1px solid var(--line);padding:15px 18px;background:var(--white);margin:12px 0;border-radius:4px}summary{cursor:pointer;font-weight:600;font-size:14px}.empty{font-size:13px;color:var(--muted)}.site-ai-tools{--accent:#3f5a85;--ink:#203248;--soft:#e9edf4;--line:#d5dce5;--paper:#f4f5f7;--warm:#eee4d9}.site-ai-tools .hero h1{font-family:var(--sans);font-weight:600;letter-spacing:-.02em}.site-ai-tools .note-card{transform:none}code{background:#e9e9e2;padding:2px 5px;border-radius:3px;font-size:.88em}@media(max-width:850px){.hero{gap:30px}.article-layout{grid-template-columns:1fr}.aside{display:none}.cards{gap:12px}.card{padding:22px}.nav{gap:14px}.hero h1{font-size:34px}}@media(max-width:620px){body{line-height:1.85}.shell{padding:0 20px}.mast{padding:16px 0;display:block}.brand{font-size:15px}.nav{gap:20px;margin-top:14px;font-size:12px;justify-content:flex-start}.hero{grid-template-columns:1fr;padding:35px 0 40px;gap:30px}.hero h1{font-size:30px;margin-bottom:19px}.hero .lead{font-size:14px}.note-card{padding:23px;box-shadow:7px 7px 0 #e7e8df;margin-right:7px;transform:none}.note-card h2{font-size:22px}.eyebrow{margin-bottom:14px}.strip{grid-template-columns:1fr;gap:13px;padding:18px 0;margin-bottom:36px}.strip>div{border-bottom:1px solid var(--line);padding-bottom:10px}.strip>div:last-child{border:0;padding-bottom:0}.strip strong{display:inline;font-size:13px;margin-right:10px}.section{padding-bottom:38px}.section-head{display:block}.section-head h2{font-size:24px}.section-head p{margin-top:8px}.cards{grid-template-columns:1fr;gap:12px}.card{padding:23px}.card h3{margin:8px 0;font-size:18px}.card p{margin-bottom:12px}.guide-panel{padding:23px 20px}.guide-panel h2{font-size:24px}.form-grid,.form-grid.three{grid-template-columns:1fr;gap:16px}.footer{display:block}.footer nav{margin-top:16px}.article-header{padding-top:6px}.article-header h1{font-size:28px}.article-body h2{font-size:23px}.article-body p{font-size:15px}.crumbs{margin:18px 0}.result{padding:20px 17px}.result .big{font-size:31px}.callout{padding:18px 20px}.hero-actions .button{font-size:13px;gap:10px;padding:12px 15px}.table-wrap{max-width:100%}th,td{padding:13px;font-size:12px}.section-head a{display:inline-block;margin-top:8px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}@media print{.preview-banner,.nav,.aside,.footer,.hero-actions,button,.skip{display:none!important}body{background:white;font-size:12pt}.shell{max-width:none;padding:0}.article-layout{display:block}.card,.guide-panel,.callout,.result{break-inside:avoid}.hero{display:block}a{color:inherit}input,textarea,select{border:1px solid #888}}