:root{--ink:#30213e;--plum:#7435aa;--plum-deep:#56247f;--lilac:#f0e5fa;--paper:#fffcf9;--white:#fff;--line:#e5d9e8;--muted:#62576a;--yellow:#ffe177;--mint:#bde9e0;--pink:#ffcfca}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hiragino Maru Gothic ProN","BIZ UDPGothic","Yu Gothic",system-ui,sans-serif;font-size:16px;line-height:1.65}
a{color:inherit}
button,input{font:inherit}
button{cursor:pointer}
.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}
.site-header{background:var(--white);border-bottom:1px solid var(--line)}
.header-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:88px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:900;font-size:18px;line-height:1.15;letter-spacing:.015em;white-space:nowrap}
.brand-mark{display:grid;grid-template-columns:repeat(2,10px);grid-template-rows:repeat(2,10px);gap:3px;transform:rotate(-12deg)}
.brand-mark i{display:block;border-radius:3px;background:var(--plum)}
.brand-mark i:nth-child(2){background:var(--yellow)}
.brand-mark i:nth-child(3){background:var(--mint)}
.site-header nav{display:flex;align-items:center;gap:5px;flex-wrap:wrap}
.site-header nav a{padding:9px 13px;text-decoration:none;color:var(--muted);font-size:14px;font-weight:800;border-radius:999px}
.site-header nav a:hover,.site-header nav a.current{background:var(--lilac);color:var(--plum-deep)}
.intro{padding:30px 0 21px;position:relative}
.intro:before{content:"";position:absolute;right:145px;top:45px;width:45px;height:45px;background:var(--pink);border-radius:50%;opacity:.85;z-index:-1}
.intro:after{content:"";position:absolute;right:10px;top:37px;width:96px;height:96px;border:17px solid var(--yellow);border-radius:25px;transform:rotate(14deg);opacity:.7;z-index:-1}
.eyebrow,.kicker{text-transform:uppercase;letter-spacing:.14em;color:var(--plum-deep);font-size:13px;font-weight:900;margin:0 0 12px}
.eyebrow{display:flex;align-items:center;gap:10px}
.eyebrow .line{width:29px;height:3px;background:var(--plum)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(35px,4.3vw,54px);letter-spacing:-.065em;line-height:1.2;margin-bottom:12px;font-weight:900}
h1 em{font-style:normal;color:var(--plum)}
.intro-copy{max-width:700px;color:var(--muted);font-size:15px;margin-bottom:0}
.workspace{background:var(--white);border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:0 18px 48px rgba(38,68,125,.07)}
.workspace-head{display:flex;justify-content:space-between;align-items:end;gap:20px}
.workspace h2,.section-lead h2{font-size:clamp(26px,3vw,36px);letter-spacing:-.04em;line-height:1.3;margin:0}
.period-control{border:0;padding:0;margin:0;display:flex;align-items:center;gap:8px}
.period-control legend{font-size:13px;font-weight:800;color:var(--muted);margin-bottom:9px}
.period-control label{position:relative}
.period-control input{position:absolute;opacity:0;inset:0}
.period-control span{display:block;min-width:77px;text-align:center;border:1px solid #d7c9df;border-radius:10px;padding:10px 13px;background:var(--white);font-weight:800;font-size:14px;transition:.15s}
.period-control input:checked+span{background:var(--plum);border-color:var(--plum);color:var(--white);box-shadow:0 4px 10px rgba(116,53,170,.22)}
.period-control input:focus-visible+span,.text-button:focus-visible,a:focus-visible{outline:3px solid #efad00;outline-offset:3px}
.calc-note{color:var(--muted);font-size:14px;border-top:1px solid var(--line);padding-top:15px;margin:20px 0}
.results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.result-card{border:1px solid var(--line);border-radius:16px;padding:20px 20px 17px;display:flex;flex-direction:column;min-width:0;background:#fff;transition:transform .2s,box-shadow .2s}
.result-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(38,68,125,.1)}
.card-top{display:flex;justify-content:space-between;align-items:center;gap:8px;min-height:28px}
.brand-tag{font-size:12px;font-weight:900;letter-spacing:.025em;border-radius:7px;padding:4px 8px;white-space:nowrap}
.brand-tag.and{background:var(--mint)}
.brand-tag.cha{background:var(--yellow)}
.brand-tag.toy{background:var(--pink)}
.rank{color:#72657b;font-size:12px;white-space:nowrap}
.result-card h3{font-size:20px;line-height:1.3;margin:18px 0 7px}
.result-price{font-size:clamp(30px,3vw,40px);font-weight:900;line-height:1.15;letter-spacing:-.04em;margin:0;color:var(--plum-deep)}
.result-price span{font-size:14px;letter-spacing:0;color:var(--ink);margin-left:3px}
.monthly{font-size:14px;color:var(--muted);margin:7px 0 16px}
.result-card dl{margin:0 0 20px;border-top:1px solid var(--line)}
.result-card dl div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding:9px 0;font-size:14px}
.result-card dt{color:var(--muted)}
.result-card dd{margin:0;text-align:right;font-weight:800}
.plan-note{font-size:13px;color:var(--muted);margin:0 0 16px}
.card-link{margin-top:auto;display:flex;justify-content:space-between;align-items:center;border-radius:9px;background:#f5edfa;color:var(--plum-deep);padding:11px 13px;text-decoration:none;font-size:14px;font-weight:900}
.card-link:hover{background:#eadcf5}
.more-row{text-align:center;padding-top:18px}
.text-button{border:0;background:none;color:var(--plum-deep);font-weight:900;padding:8px 10px}
.text-button span{display:inline-flex;align-items:center;justify-content:center;width:25px;height:25px;margin-left:5px;border:1px solid currentColor;border-radius:50%;font-size:18px}
.decision-grid{display:grid;grid-template-columns:1.16fr repeat(3,minmax(0,1fr));gap:16px;margin-top:82px;margin-bottom:76px;align-items:stretch}
.section-lead{padding:12px 30px 8px 0}
.section-lead p:last-child{color:var(--muted);margin:18px 0 0;max-width:290px}
.topic-card{display:flex;flex-direction:column;position:relative;text-decoration:none;background:var(--lilac);border-radius:18px;padding:24px;min-height:268px;overflow:hidden}
.topic-card:nth-of-type(2){background:#fff1ce}
.topic-card:nth-of-type(3){background:#e4f4f0}
.topic-icon{display:flex;align-items:center;justify-content:center;width:62px;height:62px;border-radius:17px;background:var(--white);color:var(--plum);font-size:22px;font-weight:900;transform:rotate(-7deg)}
.topic-number{position:absolute;top:28px;right:24px;color:#9973b6;font-size:13px;font-weight:900}
.topic-card:nth-of-type(2) .topic-number{color:#b48415}
.topic-card:nth-of-type(3) .topic-number{color:#39786e}
.topic-card h3{font-size:22px;letter-spacing:-.035em;margin:24px 0 5px}
.topic-card p{font-size:14px;color:var(--muted);margin:0 0 15px}
.topic-more{margin-top:auto;color:var(--plum-deep);font-size:14px;font-weight:900}
.topic-card:hover .topic-more{text-decoration:underline}
.caveat{display:flex;gap:19px;background:#f4eef8;border-radius:16px;padding:26px 30px;margin-bottom:72px}
.caveat-mark{flex:none;width:32px;height:32px;border-radius:50%;background:var(--plum);color:var(--white);font-weight:900;text-align:center;line-height:32px}
.caveat h2{font-size:19px;margin-bottom:5px}
.caveat p{font-size:14px;color:var(--muted);margin-bottom:8px}
.caveat a,.article-link{font-size:14px;color:var(--plum-deep);font-weight:900}
.site-footer{border-top:1px solid var(--line);background:var(--white);padding:30px 0}
.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:start}
.site-footer strong{font-size:17px}
.site-footer p,.site-footer span{font-size:13px;color:var(--muted);margin:4px 0 0}
.site-footer a{display:block;font-size:14px;font-weight:800;text-decoration:none;margin-bottom:4px}
.site-footer a:hover{text-decoration:underline}
.page-intro{padding:55px 0 34px;max-width:820px}
.page-intro h1{font-size:clamp(34px,5vw,54px);margin-bottom:20px}
.page-intro p:last-child{color:var(--muted);font-size:17px;max-width:690px}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:38px;align-items:start;padding-bottom:80px}
.article-body{min-width:0}
.info-panel{background:var(--white);border:1px solid var(--line);border-radius:17px;padding:26px;margin-bottom:18px}
.info-panel h2{font-size:23px;line-height:1.4;margin-bottom:16px;letter-spacing:-.025em}
.info-panel h3{font-size:18px;margin:23px 0 8px}
.info-panel p{color:var(--muted);margin-bottom:12px}
.info-panel p:last-child{margin-bottom:0}
.info-panel ul{margin:0;padding-left:1.25em;color:var(--muted)}
.info-panel li{margin:7px 0}
.fact-list{display:grid;gap:10px}
.fact-row{display:grid;grid-template-columns:160px 1fr;gap:15px;padding:15px 0;border-top:1px solid var(--line)}
.fact-row:first-child{border-top:0}
.fact-row strong{font-size:15px}
.fact-row p{font-size:15px;margin:0}
.fact-row a{display:inline-block;color:var(--plum-deep);font-weight:800;font-size:13px;margin-top:7px}
.side-note{position:sticky;top:20px;background:var(--ink);color:var(--white);border-radius:16px;padding:22px}
.side-note strong{font-size:18px}
.side-note p{font-size:14px;color:#eadff2;margin:9px 0 17px}
.side-note a{display:block;background:var(--yellow);color:var(--ink);border-radius:8px;padding:10px 12px;text-align:center;text-decoration:none;font-weight:900;font-size:14px}
.source-list{list-style:none!important;padding:0!important}
.source-list li{border-top:1px solid var(--line);padding:13px 0;margin:0}
.source-list a{font-weight:900;color:var(--plum-deep)}
.source-list small{display:block;color:var(--muted);font-size:13px;margin-top:3px}
.guide-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding-bottom:55px}
.guide-card{display:block;background:var(--white);border:1px solid var(--line);border-radius:17px;padding:22px;text-decoration:none}
.guide-card:hover{border-color:var(--plum)}
.guide-card h2{font-size:20px;line-height:1.4;margin:0 0 8px}
.guide-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
.guide-card span{font-size:14px;font-weight:900;color:var(--plum-deep)}
.guide-preview{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;margin:-18px auto 65px;padding:30px;border:1px solid var(--line);border-radius:18px;background:var(--white)}
.guide-preview h2{font-size:27px;line-height:1.35;margin:0 0 10px}
.guide-preview p:last-child{font-size:14px;color:var(--muted);margin:0}
.guide-preview-links{display:grid;gap:7px}
.guide-preview-links a{display:block;padding:10px 13px;border-radius:9px;background:var(--lilac);color:var(--plum-deep);font-weight:900;font-size:14px;text-decoration:none}
.guide-preview-links a:hover{text-decoration:underline}
.not-found{min-height:calc(100vh - 220px);padding-top:65px;padding-bottom:90px;position:relative}
.not-found-mark{position:absolute;right:8%;top:38px;color:var(--lilac);font-size:clamp(115px,20vw,260px);font-weight:900;line-height:1;letter-spacing:-.1em;z-index:-1}
.not-found p:not(.kicker){max-width:590px;color:var(--muted)}
.not-found-link{display:inline-flex;gap:20px;align-items:center;margin-top:19px;background:var(--plum);color:var(--white);border-radius:10px;padding:12px 19px;text-decoration:none;font-weight:900}
.not-found-link:hover{background:var(--plum-deep)}
@media(max-width:900px){.results{grid-template-columns:repeat(2,minmax(0,1fr))}.decision-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section-lead{grid-column:1/-1}.article-shell{grid-template-columns:1fr}.side-note{position:static}.guide-preview{grid-template-columns:1fr}}
@media(max-width:620px){.wrap{width:min(100% - 30px,1160px)}.header-inner{min-height:0;padding:15px 0;align-items:start;flex-direction:column;gap:13px}.site-header nav{width:100%;gap:4px;flex-wrap:wrap}.site-header nav a{font-size:13px;padding:8px 10px;white-space:nowrap}.intro{padding:39px 0 25px}.intro:before{width:28px;height:28px;right:92px;top:50px;opacity:.5}.intro:after{width:60px;height:60px;border-width:12px;right:8px;top:45px;opacity:.45}.intro-copy{font-size:15px}.workspace{padding:19px 14px;border-radius:17px}.workspace-head{display:block}.period-control{margin-top:18px}.period-control span{min-width:70px;padding:9px 10px}.calc-note{font-size:13px}.results,.decision-grid,.guide-list{grid-template-columns:1fr}.result-card{padding:18px}.decision-grid{gap:13px;margin-top:65px;margin-bottom:48px}.section-lead{padding:0 0 14px}.section-lead p:last-child{max-width:none}.topic-card{min-height:215px}.guide-preview{padding:20px;margin-top:-5px;margin-bottom:45px}.guide-preview h2{font-size:23px}.caveat{padding:21px 16px;margin-bottom:50px}.footer-inner{flex-direction:column}.page-intro{padding:38px 0 23px}.info-panel{padding:20px 17px}.fact-row{grid-template-columns:1fr;gap:4px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.result-card{transition:none}}