:root{--ink:#182e40;--muted:#6d7c83;--line:#dce4e4;--green:#17776d}*{box-sizing:border-box}body{margin:0;background:#f5f7f5;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;font-size:14px}button,input,select{font:inherit;color:inherit}button,select{cursor:pointer}button{transition:background .15s}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #5ea99b;outline-offset:3px}header{height:80px;max-width:1200px;margin:auto;padding:0 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}header a{text-decoration:none;color:var(--ink);font-weight:700}header a span{font-size:10px;letter-spacing:1.5px;margin-left:12px;color:var(--muted)}.badge{font-size:11px;border:1px solid #cbdad4;border-radius:20px;padding:6px 12px;color:var(--green)}main{max-width:1120px;margin:auto;padding:48px 24px 20px}.eyebrow{font-size:10px;letter-spacing:2.2px;color:var(--green);font-weight:700}h1{font-size:38px;letter-spacing:.035em;line-height:1.5;margin:15px 0}.intro>p:last-child{color:var(--muted);line-height:1.9}.intro{margin-bottom:36px}.mobile{display:none}.layout{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:start}.input-panel{background:white;border:1px solid var(--line);border-radius:18px;overflow:hidden}.tabs{display:grid;grid-template-columns:1fr 1fr;padding:7px;background:#eaf0ed;gap:5px}.tabs button{border:0;background:transparent;padding:14px 4px;border-radius:11px;font-weight:700;font-size:16px}.tabs button span{display:block;font-size:10px;font-weight:400;margin-top:5px;color:var(--muted)}.tabs button[aria-pressed=true]{background:white;box-shadow:0 2px 8px #1638270a;color:var(--green)}.form-body{padding:28px}.section-heading{display:flex;align-items:center;gap:10px}.section-heading>span{color:var(--green);font-size:11px;font-weight:700}.section-heading h2{font-size:16px;margin:0}.text-button{margin-left:auto;border:0;background:transparent;font-size:11px;color:var(--muted);text-decoration:underline}.help,.small-note{font-size:11px;line-height:1.8;color:var(--muted)}.income-block{padding:18px 0;border-bottom:1px solid var(--line)}.row{display:flex;align-items:center;justify-content:space-between;gap:10px}.row label{font-weight:600}.row select,.section-heading select{border:1px solid var(--line);border-radius:6px;padding:6px 10px;background:white;font-size:12px}.number-wrap{display:flex;align-items:baseline;margin:10px 0;gap:10px}.number-wrap input{font-size:36px;width:100%;min-width:0;border:0;background:#f7f9f8;border-radius:6px;padding:8px 12px;font-weight:600;letter-spacing:1px;appearance:textfield}.number-wrap input::-webkit-inner-spin-button{appearance:none}.number-wrap>span{flex-shrink:0;color:var(--muted);font-size:12px}.row small{font-size:10px;line-height:1.6;max-width:62%;color:var(--muted)}.steppers{display:flex;gap:5px;flex-shrink:0}.steppers button{border:1px solid var(--line);border-radius:5px;background:white;padding:6px;font-size:10px}.steppers button:hover{background:#eaf4f0}.children-heading{margin-top:25px}.children-heading select{margin-left:auto}.child{display:flex;align-items:center;justify-content:space-between;margin:12px 0;gap:12px}.child>span{font-size:12px}.age-options{display:flex;gap:6px}.age-options button{padding:9px 15px;background:white;border:1px solid var(--line);border-radius:7px;font-size:12px}.age-options button[aria-pressed=true]{background:#e8f3ef;border-color:#9bc7b8;color:var(--green)}.small-note{margin-top:18px;font-size:10px}.result-column{position:sticky;top:24px}.result-card{background:#193f40;color:#fff;border-radius:18px;padding:32px;box-shadow:0 16px 36px #173d3610}.result-top{display:flex;justify-content:space-between;align-items:center;font-size:14px;gap:8px}.live{font-size:10px;color:#9fd3c1}.result-label{font-size:11px;color:#b5cdca;margin-top:36px}.amount{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}.amount strong{font-size:clamp(36px,4.6vw,60px);letter-spacing:-1.5px;line-height:1.35;font-weight:600;font-variant-numeric:tabular-nums}.amount>span{color:#bed0cc;font-size:13px}#scope{font-size:11px;color:#bed0cc;margin:10px 0 28px}.result-rule{height:1px;background:#ffffff25}.annual{display:flex;justify-content:space-between;margin-top:24px;font-size:12px;align-items:center}.annual strong{font-size:19px;font-weight:500}.mini-chart{height:5px;border-radius:5px;background:#ffffff15;margin-top:23px;overflow:hidden}.mini-chart>div{height:100%;background:#9fcdad;transition:width .2s}.chart-caption{font-size:10px;color:#aac6bd;display:flex;justify-content:space-between;line-height:1.7}.result-note{font-size:10px;line-height:1.9;color:#b7cdca;margin:25px 0 0}.result-message{font-size:12px;line-height:1.8;color:#ffe3ad}.result-message:empty{display:none}.under-result{display:flex;gap:12px;margin:18px 12px;color:var(--muted);font-size:11px;line-height:1.9}.under-result>span{font-size:23px;color:#87a49a}.under-result p{margin:0}.information{margin-top:35px;border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{padding:20px 4px;cursor:pointer;font-size:12px}summary span{float:right;font-size:9px;letter-spacing:1px;color:var(--muted)}.detail-body{padding:0 20px 20px;font-size:12px;line-height:2;color:#55656c}.detail-body a{color:var(--green)}#formula{background:#eaf0ed;padding:12px 18px;border-radius:8px;overflow-wrap:anywhere}footer{display:flex;justify-content:space-between;gap:15px;margin-top:32px;padding-bottom:15px;font-size:10px;color:var(--muted)}footer strong{font-weight:500}@media(max-width:760px){header{height:64px;padding:0 20px}header a span{display:none}main{padding:28px 16px}.intro{margin-bottom:25px}h1{font-size:28px}.intro>p:last-child{font-size:12px}.layout{grid-template-columns:1fr;gap:18px}.form-body{padding:22px}.result-column{position:static}.result-card{padding:27px}.amount strong{font-size:54px}.result-label{margin-top:25px}.mobile{display:block}footer{flex-direction:column}.row small{max-width:55%}.age-options button{padding:9px 12px}}@media print{header,.intro,.tabs,.steppers,.text-button,.under-result,footer{display:none}.layout{display:block}.result-column{position:static}.result-card{color:#182e40;background:white;border:1px solid #ccc}.result-card p,.result-card span{color:#55656c}.information{display:none}}
:root .title-aside{font-size:.65em;font-weight:500}.intro .basis-label{font-size:11px;color:var(--green);line-height:1.8}.read-guide{margin-top:45px;max-width:860px;line-height:1.95}.read-guide h2{font-size:21px;margin:36px 0 16px;line-height:1.6}.read-guide>p{font-size:13px;color:#52656b}.guide-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.guide-pair article{border:1px solid var(--line);padding:24px;background:white;border-radius:12px}.stage-label{font-size:11px;color:var(--green)}.guide-pair h3{margin:8px 0;font-size:23px}.guide-pair p{font-size:12px}.guide-key{font-weight:600;color:var(--green)}.read-guide .guide-source{font-size:11px;color:var(--muted)}.read-guide a{color:var(--green);text-underline-offset:3px}.age-guide{padding:0;list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.age-guide li{padding:20px 14px;background:#eaf1ed;border-top:3px solid #89afa2;border-radius:0 0 8px 8px}.age-guide strong{display:block;font-size:24px}.age-guide span{font-size:11px;color:var(--green)}.age-guide p{font-size:12px;margin-bottom:0}.stat-card{border:1px solid var(--line);background:white;border-radius:12px;padding:24px}.stat-card>span{display:block;font-size:11px;color:var(--muted)}.stat-card>strong{display:block;margin:7px 0}.stat-card b{font-size:30px;color:var(--green)}.stat-card p{font-size:11px;color:var(--muted)}.stat-bar{display:flex;height:14px;border-radius:4px;overflow:hidden;margin:14px 0}.stat-bar span:nth-child(1){background:var(--green)}.stat-bar span:nth-child(2){background:#91b8ab}.stat-bar span:nth-child(3){background:#d4dfda}@media(max-width:600px){.guide-pair{grid-template-columns:1fr}.read-guide h2{font-size:19px}.age-guide{gap:7px}.age-guide li{padding:14px 9px}.age-guide strong{font-size:20px}.age-guide p{font-size:11px}.age-guide span{font-size:10px}}
.mode-help{margin:0;padding:14px 28px;background:#f1f6f3;color:var(--green);font-size:11px;line-height:1.8}
