.yhd-app{--yhd-ink:#142b38;--yhd-muted:#60717a;--yhd-border:#d6e1e5;--yhd-soft:#f2f7f8;--yhd-accent:#087184;--yhd-accent-deep:#045567;--yhd-warm:#e9a42e;max-width:980px;margin:20px auto;color:var(--yhd-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.5}
.yhd-app *{box-sizing:border-box}.yhd-hero{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:24px;border:1px solid var(--yhd-border);border-radius:18px;background:linear-gradient(135deg,#fff 0%,#e7f4f5 100%);box-shadow:0 8px 28px rgba(20,43,56,.07)}.yhd-kicker{font-size:11px;letter-spacing:.12em;font-weight:800;color:var(--yhd-accent)}.yhd-hero h2{margin:3px 0;font-size:29px;line-height:1.25}.yhd-hero p{margin:0;color:#52616b}.yhd-badge{flex:0 0 auto;border-radius:999px;padding:9px 12px;background:var(--yhd-ink);color:#fff;font-size:12px;font-weight:800}
.yhd-quick-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:15px 0}.yhd-quick-nav button,.yhd-back,.yhd-calc-tab{appearance:none;border:1px solid var(--yhd-border);border-radius:11px;min-height:48px;background:#fff;color:var(--yhd-ink);font-weight:800;cursor:pointer}.yhd-quick-nav button{padding:8px 5px;font-size:13px}.yhd-quick-nav button:hover,.yhd-quick-nav button:focus-visible{border-color:var(--yhd-accent);color:var(--yhd-accent)}
.yhd-screen{display:none}.yhd-screen.is-active{display:block}.yhd-screen[hidden],.yhd-calc-panel[hidden]{display:none!important}.yhd-screen-heading{margin:18px 0 12px}.yhd-screen-heading h3{margin:0;font-size:21px;line-height:1.35}.yhd-screen-heading p,.yhd-screen-note{margin:3px 0 0;color:var(--yhd-muted);font-size:13px}.yhd-screen-note{padding:12px 14px;border-radius:10px;background:var(--yhd-soft)}.yhd-route-header{display:flex;align-items:center;gap:10px;margin:15px 0 0}.yhd-route-header p{margin:0;min-width:0;color:var(--yhd-muted);font-size:12px;font-weight:700;overflow-wrap:anywhere}.yhd-back{padding:0 12px;white-space:nowrap;color:var(--yhd-accent)}
.yhd-purpose-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.yhd-purpose-card,.yhd-choice-card,.yhd-shape-card,.yhd-size-card{appearance:none;width:100%;border:1px solid var(--yhd-border);background:#fff;color:var(--yhd-ink);cursor:pointer;box-shadow:0 3px 12px rgba(20,43,56,.04);transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease}.yhd-purpose-card:hover,.yhd-choice-card:hover,.yhd-shape-card:hover,.yhd-size-card:hover{transform:translateY(-2px);border-color:var(--yhd-accent);box-shadow:0 7px 18px rgba(8,113,132,.14)}.yhd-purpose-card{min-height:116px;padding:16px 10px;border-radius:15px;text-align:left;background:linear-gradient(145deg,#fff,#f1f9fa)}.yhd-purpose-card span{display:block;font-size:19px;font-weight:900}.yhd-purpose-card small{display:block;margin-top:8px;color:var(--yhd-muted);font-size:12px;font-weight:700}.yhd-purpose-card:first-child{grid-column:span 1;background:linear-gradient(145deg,#e9f7f8,#fff)}
.yhd-choice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.yhd-choice-card{min-height:96px;padding:13px;border-radius:14px;font-size:16px;font-weight:900;text-align:left}.yhd-choice-card span{display:block;margin-top:7px;color:var(--yhd-muted);font-size:12px;font-weight:700}.yhd-shape-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.yhd-shape-card{min-height:155px;padding:7px;border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:space-between}.yhd-shape-card span{min-height:39px;display:grid;place-items:center;text-align:center;font-size:13px;font-weight:900;line-height:1.25}.yhd-tile-svg{display:block;width:100%;height:104px;color:var(--yhd-accent)}.yhd-size-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.yhd-size-card{min-height:82px;padding:8px;border-radius:13px}.yhd-size-card b{display:block;font-size:21px;color:var(--yhd-accent-deep)}.yhd-size-card span{font-size:12px;color:var(--yhd-muted);font-weight:700}
.yhd-shape-card .yhd-shape-image{width:100%;min-height:92px;padding:4px;background:#f7fbfb;border-radius:9px}.yhd-shape-card .yhd-shape-image img{display:block;width:100%;height:88px;object-fit:contain}.yhd-no-product-image{display:grid;place-items:center;min-height:88px;padding:8px;border:1px dashed var(--yhd-border);border-radius:8px;color:var(--yhd-muted);font-size:11px;font-weight:700;line-height:1.4;text-align:center}.yhd-searchline{display:grid;grid-template-columns:1fr auto;gap:9px;margin:14px 0 6px}.yhd-searchline input,.yhd-calc-grid input{width:100%;min-height:50px;padding:8px 12px;border:1px solid var(--yhd-border);border-radius:10px;background:#fff;color:var(--yhd-ink);font-size:16px}.yhd-searchline button,.yhd-calc-btn{border:0;border-radius:10px;min-height:50px;padding:0 22px;background:var(--yhd-accent);color:#fff;font-weight:900;cursor:pointer}.yhd-status{min-height:20px;margin:8px 0 12px;color:var(--yhd-muted);font-size:13px}.yhd-app button:focus-visible,.yhd-app input:focus-visible{outline:3px solid #65bdca;outline-offset:2px}
.yhd-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.yhd-card{overflow:hidden;border:1px solid var(--yhd-border);border-radius:15px;background:#fff;box-shadow:0 3px 12px rgba(20,43,56,.05)}.yhd-card-top{position:relative;border-bottom:1px solid #e6eef0;background:linear-gradient(135deg,#f9fcfc,#eaf4f5)}.yhd-visual{display:grid;place-items:center;min-height:190px;margin:0;padding:10px;color:var(--yhd-accent)}.yhd-visual img{display:block;max-width:100%;max-height:210px;width:auto;height:auto;object-fit:contain}.yhd-diagram-svg{display:block;width:100%;max-width:300px;height:174px}.yhd-diagram-svg .yhd-diagram-label,.yhd-diagram-svg .yhd-diagram-title{fill:currentColor;font-size:13px;font-family:inherit;font-weight:800}.yhd-favorite{position:absolute;top:10px;right:10px;width:45px;height:45px;border:1px solid #cbd7dc;border-radius:50%;background:#fff;color:var(--yhd-warm);font-size:25px;line-height:1;cursor:pointer;box-shadow:0 2px 6px rgba(20,43,56,.13)}.yhd-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:9px;padding:13px 14px 5px}.yhd-card-head h3{margin:2px 0 0;font-size:18px;line-height:1.35}.yhd-card-head>strong{color:var(--yhd-accent);font-size:19px;white-space:nowrap}.yhd-maker{font-size:11px;color:#60717c;font-weight:800}.yhd-meta{min-height:20px;padding:0 14px 10px;font-size:12px;color:#60717c}.yhd-dims{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;padding:0 14px 12px}.yhd-dims>div,.yhd-calc-result>div{display:flex;align-items:baseline;justify-content:space-between;gap:8px;padding:9px 10px;border-radius:9px;background:var(--yhd-soft)}.yhd-dims span,.yhd-calc-result span{font-size:12px;color:#60717c}.yhd-dims b{white-space:nowrap;font-size:14px}.yhd-no-dimension{grid-column:1/-1;color:var(--yhd-muted);font-size:13px}.yhd-detail-toggle{width:calc(100% - 28px);min-height:43px;margin:0 14px 14px;border:1px solid var(--yhd-border);border-radius:9px;background:#fff;color:var(--yhd-accent);font-weight:900;cursor:pointer}.yhd-source{display:grid;grid-template-columns:45px 1fr;gap:8px;border-top:1px solid #edf1f2;margin:0 14px;padding-top:10px;font-size:11px;color:#5d6d76}.yhd-source a{color:inherit;text-decoration:underline}.yhd-note{margin:10px 14px 14px;font-size:12px;color:#596974}.yhd-empty{grid-column:1/-1;padding:31px 18px;border:1px dashed var(--yhd-border);border-radius:14px;background:#fff;text-align:center;color:var(--yhd-muted)}.yhd-empty strong{display:block;color:var(--yhd-ink);font-size:18px}.yhd-empty p{margin:5px 0 0;font-size:13px}
.yhd-calc-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:16px 0 12px}.yhd-calc-tab.is-active{background:var(--yhd-ink);border-color:var(--yhd-ink);color:#fff}.yhd-calc-panel{display:none}.yhd-calc-panel.is-active{display:block}.yhd-calc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px;padding:16px;border:1px solid var(--yhd-border);border-radius:14px;background:#fff}.yhd-calc-grid label{color:#485863;font-size:12px;font-weight:800}.yhd-calc-grid input{margin-top:6px}.yhd-calc-btn{margin-top:11px}.yhd-calc-result{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}.yhd-calc-result b{font-size:16px}.yhd-help,.yhd-disclaimer{color:#61717b;font-size:12px}.yhd-disclaimer{margin:20px 0 0;padding:12px 14px;border-radius:10px;background:var(--yhd-soft)}
@media(max-width:760px){.yhd-app{margin:12px 0}.yhd-hero{align-items:flex-start;padding:17px}.yhd-hero h2{font-size:23px}.yhd-hero p{font-size:13px}.yhd-badge{padding:7px 9px;font-size:10px}.yhd-quick-nav{grid-template-columns:repeat(2,minmax(0,1fr));position:sticky;top:0;z-index:10;margin:8px 0 13px;padding:8px 0;background:#fff}.yhd-quick-nav button{font-size:13px;min-height:46px}.yhd-screen-heading{margin-top:13px}.yhd-purpose-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.yhd-purpose-card{min-height:100px;padding:13px 10px}.yhd-purpose-card span{font-size:17px}.yhd-choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.yhd-choice-card{min-height:82px;font-size:15px}.yhd-shape-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.yhd-shape-card{min-height:137px;padding:4px}.yhd-shape-card span{font-size:12px;min-height:36px}.yhd-tile-svg{height:88px}.yhd-size-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.yhd-size-card{min-height:72px}.yhd-size-card b{font-size:18px}.yhd-searchline{grid-template-columns:1fr}.yhd-searchline button{width:100%}.yhd-results{grid-template-columns:1fr}.yhd-visual{min-height:170px}.yhd-diagram-svg{height:156px}.yhd-calc-grid,.yhd-calc-result{grid-template-columns:1fr}.yhd-route-header{margin-top:10px}}