:root{font-family:Meiryo,"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",system-ui,sans-serif;background:#f4f7f7;color:#1e343c;font-synthesis:none}*{box-sizing:border-box}body{margin:0;line-height:1.8;letter-spacing:.012em;-webkit-font-smoothing:antialiased}button,input{font:inherit}.shell{max-width:1120px;margin:auto;padding-inline:24px}.header{background:white;border-bottom:1px solid #dce6e6}.brand-line{display:flex;align-items:center;gap:12px;padding-block:16px}.logo{width:42px;height:42px;display:grid;place-items:center;background:#124c55;color:white;font-size:26px;font-weight:800;border-radius:13px}.brand{font-weight:800;font-size:17px;letter-spacing:-.02em}.brand-sub{font-size:11px;color:#637b83}.stage{margin-left:auto;border-radius:30px;padding:4px 12px;background:#eaf2f2;color:#49636a;font-size:11px;font-weight:700}.hero{padding:52px 0 26px}.eyebrow{font-size:12px;letter-spacing:.1em;font-weight:800;color:#247f79}.hero h1{font-size:clamp(28px,3.5vw,43px);letter-spacing:-.012em;line-height:1.3;margin:15px 0}.hero h1 span{color:#137f70}.hero p{font-size:16px;max-width:720px;margin:0 0 20px;color:#516d75}.hint{border-left:3px solid #32a497;background:#eaf6f3;padding:12px 16px;color:#426a69;border-radius:0 8px 8px 0;font-size:13px;max-width:900px}.layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:20px;align-items:start}.panel{background:white;border:1px solid #dce7e5;border-radius:18px;box-shadow:0 7px 24px rgba(14,50,56,.035);padding:27px}.section-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:22px}.step{width:35px;height:35px;background:#e3f2ef;color:#067c6c;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:14px;flex:none}.section-head h2{font-size:20px;line-height:1.35;margin:0}.section-head p{font-size:12px;color:#71868b;margin:5px 0 0}.grid-fields{display:grid;grid-template-columns:1fr 1fr;gap:15px 13px}.grid-fields label{font-size:13px;font-weight:700;color:#355057}.unit{color:#91a3a8;font-size:11px;font-weight:400}.grid-fields input{display:block;width:100%;margin-top:6px;border:1px solid #ccdbdb;border-radius:9px;padding:11px 12px;font-size:16px;font-variant-numeric:tabular-nums;background:#fbfdfd;color:#233d43}.grid-fields input:focus{outline:3px solid #bce3da;outline-offset:0;border-color:#2c8f82}.calculate{width:100%;margin-top:24px;padding:14px 20px;border:0;border-radius:10px;background:#146d65;color:white;font-weight:800;display:flex;justify-content:space-between;cursor:pointer}.calculate:hover{background:#10564f}.key-result{background:linear-gradient(140deg,#184753,#116f69);border-radius:14px;padding:26px;color:white;display:flex;flex-direction:column;gap:9px}.key-result span{font-size:13px;opacity:.82}.key-result strong{font-size:clamp(31px,3.7vw,42px);font-weight:800;letter-spacing:-.012em;line-height:1.1;font-variant-numeric:tabular-nums}.key-result small{opacity:.72}.metrics{margin:20px 0 0}.metrics>div{display:flex;gap:14px;justify-content:space-between;align-items:center;padding:14px 3px;border-bottom:1px solid #e6eeee}.metrics>div:last-child{border-bottom:0}.metrics dt{font-size:13px;color:#587078}.metrics dd{margin:0;font-weight:800;font-size:18px;font-variant-numeric:tabular-nums;white-space:nowrap}.metrics .emph dt{font-weight:800;color:#126e63}.metrics .emph dd{color:#126e63;font-size:22px}.loss{color:#cf4949!important}.result-note{background:#f5f8f8;padding:18px;border-radius:11px;margin-top:14px}.result-note strong{font-size:13px}.result-note p{font-size:12px;color:#6a8085;margin:6px 0 0}#error{padding:13px;color:#a52b2b;background:#fff1f1;border-radius:8px;margin-bottom:12px;font-size:13px}.explain{padding:42px 0}.explain h2{font-size:20px;margin:0 0 18px}.explain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.explain-grid>div{background:#eaf0f0;border-radius:14px;padding:20px}.explain h3{margin:0 0 9px;font-size:15px}.explain p{font-size:13px;color:#56717a;margin:0}.footer{border-top:1px solid #dbe4e5;color:#7b8b90;font-size:11px;padding:25px 0 35px}.footer p{margin:5px 0}.noscript{padding:20px;background:#fff2db;text-align:center}@media(max-width:850px){.layout{grid-template-columns:1fr}.hero{padding-top:35px}.explain-grid{grid-template-columns:1fr}.panel{padding:22px}}@media(max-width:480px){.shell{padding-inline:14px}.panel{padding:18px}.grid-fields{gap:12px 10px}.grid-fields label{font-size:12px}.grid-fields input{padding:10px;font-size:15px}.brand{font-size:14px}.stage{font-size:10px;padding:3px 8px}.hero h1{font-size:30px}.metrics dt{font-size:12px}.metrics dd{font-size:16px}}

/* v0.7.0: 手数料比較ブロック。既存電卓と共通の余白を使用。 */
.comparator{margin-top:24px;margin-bottom:24px}.compare-result{margin-top:16px;padding:16px;border-radius:12px;background:#eaf4f3;color:#173f4f;font-weight:700;line-height:1.75}

/* Optional fee worksheet stays collapsed during the primary calculator flow. */
#fee-helper summary{font-weight:800;font-size:17px;cursor:pointer;list-style-position:inside}
#fee-helper[open] summary{margin-bottom:15px}
#fee-helper .grid-fields select{display:block;width:100%;margin-top:6px;border:1px solid #ccdbdb;border-radius:9px;padding:11px 12px;font:inherit;background:#fbfdfd;color:#233d43}
#fee-helper .result-note{margin:12px 0}

/* Offline, user-controlled comparison memo: no external API or persistence. */
.memo-tool{margin-top:20px;padding:18px;border:1px solid #c9dfda;border-radius:12px;background:#f5faf8}
.memo-tool h3{margin:0 0 6px;font-size:17px}.memo-tool p{font-size:13px}
.memo-tool .calculate{margin:10px 0;max-width:100%}
.memo-tool .memo-label{display:block;margin:12px 0 5px;font-size:13px;font-weight:700}
.memo-tool textarea{display:block;width:100%;box-sizing:border-box;resize:vertical;min-height:180px;padding:12px;border:1px solid #a8c6c0;border-radius:8px;background:#fff;color:#173f4f;font:13px/1.65 ui-monospace,Consolas,monospace;overflow-wrap:anywhere}
.memo-tool textarea[hidden]{display:none}


/* H99: readability and progressive disclosure. Keep fee assumptions accessible. */
html{font-size:16px}button,input,textarea,select{font-family:inherit}
.brand-sub,.stage{font-size:12px;color:#405a63}
.eyebrow{font-size:13px;letter-spacing:.04em}
.hero{padding:38px 0 20px}.hero h1{margin:10px 0 14px;line-height:1.38}
.hero p{font-size:16px;line-height:1.9;color:#344e56;max-width:670px;margin-bottom:8px}
.panel{padding:26px}.section-head{margin-bottom:19px}.section-head h2{font-size:22px;line-height:1.55}
.section-head p{font-size:15px;line-height:1.8;color:#445c64;max-width:62ch}
.grid-fields label{font-size:15px;line-height:1.55;color:#28454d}.unit{font-size:12px;color:#516971}
.grid-fields input,.grid-fields select{font-size:16px;min-height:46px;background:#fff;border-color:#a6bcc1;color:#1b353d}
.metrics dt,.key-result span{font-size:14px;color:inherit}.metrics dt{color:#445d64}
.key-result small{opacity:1;font-size:13px}.key-result span{opacity:1}
.result-note,.compare-result,.brief-caution{font-size:14px;line-height:1.85}
.result-note p{font-size:14px;color:#405860;line-height:1.8}
.explain p,.footer,.memo-tool p{font-size:14px;line-height:1.8;color:#405860}
.footer{font-size:13px}.footer a{color:#095d58}
.memo-tool textarea{font-size:14px;line-height:1.75}
.memo-tool .memo-label{font-size:14px}
.brief-caution{font-size:15px;margin:13px 0 0;padding:0 3px;color:#3b6061}
.reader-details{background:#f2f8f6;border:1px solid #d4e7e2;border-radius:11px;margin-top:14px;color:#34545c}
.reader-details summary{cursor:pointer;padding:12px 15px;min-height:44px;font-size:15px;line-height:1.65;font-weight:700;color:#165b56}
.reader-details summary:focus-visible{outline:3px solid #156e61;outline-offset:3px}
.reader-details[open] summary{border-bottom:1px solid #d4e7e2}
.reader-details .disclosure-body{padding:13px 15px 17px;font-size:15px;line-height:1.9;color:#36515b}
.reader-details.hero-note{max-width:700px;margin-top:17px}
.compact-details{background:#fbfdfc;border-color:#dfe9e8}
.explain{padding:20px 0 32px}.explainer{margin-top:0}.explain-grid{padding:16px 15px 20px}
.explain h3{font-size:16px}
.calculate{font-size:16px;min-height:48px;align-items:center}
@media(max-width:480px){.hero{padding:27px 0 18px}.hero h1{font-size:29px}.shell{padding-inline:15px}.panel{padding:19px}.section-head h2{font-size:20px}.grid-fields label{font-size:15px}.grid-fields input{font-size:16px;padding:11px}.metrics dt{font-size:14px}.metrics dd{font-size:17px}.explain-grid{grid-template-columns:1fr}}
@media(max-width:359px){.grid-fields{grid-template-columns:1fr}.stage{display:none}}

/* H100: section titles lead directly to inputs, calculation results or actions. */
.section-head{align-items:center;margin-bottom:16px}
.hero{padding-top:35px;padding-bottom:22px}
@media(max-width:640px){.section-head{margin-bottom:14px}.hero{padding-top:28px}}