:root{--ink:#19231f;--muted:#617069;--paper:#fff;--bg:#edf3ef;--green:#176b52;--lime:#dff277;--line:#d8e1dc}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif}button,select,input{font-family:inherit}main{width:min(720px,100%);margin:auto;padding:24px 16px 64px}header{padding:28px 8px 18px}.eyebrow{color:var(--green);font-weight:800;letter-spacing:.08em;font-size:13px}h1{margin:6px 0 14px;font-size:clamp(34px,9vw,58px);line-height:1.05;letter-spacing:-.05em}.lead{color:var(--muted);line-height:1.8;max-width:560px}.mobile-break{display:none}.card{display:flex;gap:16px;background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:20px;margin:14px 0;box-shadow:0 8px 28px #173f2b0b}.step{display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;border-radius:50%;background:var(--ink);color:white;font-weight:800}.grow{flex:1;min-width:0}h2{font-size:19px;margin:5px 0 7px}.card p{color:var(--muted);font-size:14px;line-height:1.6}.file-button,.create,.share,.download{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;background:var(--green);color:#fff;font-weight:800;padding:13px 18px;cursor:pointer}.file-button input{display:none}.file-list{margin:12px 0 0;padding:0;list-style:none;font-size:13px;color:var(--muted)}.file-list li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:5px 0}.tabs{display:grid;grid-template-columns:1fr 1fr;gap:5px;background:#edf1ef;padding:4px;border-radius:12px;margin:18px 0}.tab{border:0;background:transparent;border-radius:9px;padding:11px 5px;font-weight:700;color:var(--muted)}.tab.active{background:#fff;color:var(--ink);box-shadow:0 2px 8px #0000000d}.options,.two-col{display:grid;gap:12px}.two-col{grid-template-columns:1fr 1fr}label{display:grid;gap:6px;font-size:13px;font-weight:700}select,input[type=number]{width:100%;border:1px solid var(--line);border-radius:10px;background:white;padding:11px;font:inherit}.check{display:flex;align-items:center;gap:8px}.hidden{display:none!important}.diagram{display:grid;gap:4px;width:min(260px,80%);aspect-ratio:210/297;margin:24px auto 4px;padding:8px;background:#fafafa;border:1px solid #aebbb4;box-shadow:0 8px 20px #0001}.diagram.landscape{aspect-ratio:297/210}.diagram span{display:grid;place-items:center;border:1px dashed #98aaa0;color:#718078;font-size:11px;background:#fff}.create{width:100%;font-size:17px;padding:17px;margin-top:10px;background:var(--ink)}.create:disabled{opacity:.4;cursor:not-allowed}.status{text-align:center;color:var(--green);font-weight:700;min-height:24px}.result{background:var(--paper);border:2px solid var(--green);border-radius:20px;padding:24px;margin:18px 0;text-align:center;box-shadow:0 12px 30px #173f2b14}.done{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;margin:0 auto 10px;background:var(--lime);font-size:24px;font-weight:900}.result>p{color:var(--muted);font-size:13px}.share,.download{width:100%;min-height:52px;margin-top:10px;font-size:16px}.share{background:var(--green)}.download{background:white;color:var(--ink);border:1px solid var(--line)}.share-help{min-height:18px}.result details{margin-top:18px;border-top:1px solid var(--line);padding-top:16px;text-align:left}.result summary{font-weight:800;cursor:pointer}.store-links{display:grid;gap:8px;margin-top:14px}.store-links a{display:block;border:1px solid var(--line);border-radius:10px;padding:11px;color:var(--green);font-weight:700;text-decoration:none}.note{margin-top:24px;background:#f7f6e9;border-radius:16px;padding:18px;font-size:13px;line-height:1.6}.note p{margin-bottom:0;color:var(--muted)}@media(max-width:480px){main{padding-inline:12px}.card{position:relative;display:block;padding:17px 14px;gap:0;text-align:center}.card>.step{position:absolute;top:17px;left:14px}.card>div:not(.step){width:100%}.card h2{padding:0 42px;text-align:center}.card .grow,.upload-card>div:last-child{text-align:center}.card label{text-align:center}.card select,.card input[type=number]{text-align:left}.card .tip{text-align:left}.card .file-list{text-align:left}.two-col{grid-template-columns:1fr}.mobile-break{display:initial}}

.tabs{grid-template-columns:repeat(3,1fr)}
label small{color:var(--muted);font-size:12px;font-weight:500;line-height:1.55}
.tip{margin:0!important;padding:10px 12px;background:#f7f6e9;border-radius:10px;color:#5d5b3f!important;font-size:12px!important}
.file-types{margin:12px 0 0!important;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:12px!important}.file-types strong{color:var(--ink)}.file-types span{font-size:11px}
.output-preview{margin:18px 0;padding:14px;background:#edf3ef;border-radius:14px}.preview-heading{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px;font-size:13px}.preview-heading span{color:var(--muted)}.preview-stage{display:grid;place-items:center;min-height:140px;padding:10px;background:#dce5e0;border-radius:10px;overflow:hidden}.preview-stage canvas{display:block;max-width:100%;height:auto;background:white;box-shadow:0 4px 16px #0002}.preview-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.preview-nav button{border:1px solid var(--line);border-radius:9px;background:white;padding:9px;color:var(--ink);font-weight:700}.preview-nav button:disabled{opacity:.4}.preview-message{margin:8px 0 0!important;font-size:12px!important}
.diagram-label{text-align:center;margin:22px 0 0!important;font-weight:700;color:var(--ink)!important}
.diagram{width:auto;height:240px;margin-top:10px}
.diagram.landscape{width:240px;height:auto}
.status.error{color:#b42318;background:#fff1f0;border:1px solid #f2b8b5;border-radius:12px;padding:12px;margin:12px 0;text-align:left}
.status.working{color:var(--green)}
@media(max-width:480px){.tabs{grid-template-columns:1fr}.tab{padding:10px}.diagram{width:auto;height:210px}.diagram.landscape{width:210px;height:auto}}

.tab{display:flex;min-width:0;flex-direction:column;align-items:center;justify-content:flex-start;gap:8px;cursor:pointer}.tab-title{display:block;line-height:1.35}.tab-visual{display:flex;align-items:center;justify-content:center;gap:4px;height:40px;color:#82928a}.tab-visual>b{font-size:13px}.tab-visual>i,.tab-visual em{display:block;background:#fff;border:1.5px solid currentColor;border-radius:2px}.tab-visual>i{width:20px;height:27px}.tab-visual em{width:40px;height:28px;padding:3px;display:grid;grid-template-columns:1fr 1fr;gap:2px}.tab-visual em i,.tab-visual>i{display:grid;place-items:center;border:1px solid currentColor;border-radius:1px;font-style:normal;font-size:7px;font-weight:800;line-height:1}.visual-nup>i{width:14px;height:21px;margin-right:-9px}.visual-nup>i:nth-child(2){transform:translateY(-4px)}.visual-nup>i:nth-child(3){transform:translateY(4px);margin-right:0}.visual-nup em{width:28px;height:40px;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}.visual-copy{color:var(--green)}.visual-copy>i,.visual-copy em i{background:var(--green);border-color:var(--green)}.visual-copy em{width:28px;height:40px}.visual-poster em{width:28px;height:40px;border:0;padding:0;gap:2px;background:transparent}.visual-poster em i{background:#fff;border:1.5px solid currentColor}.tab.active .tab-visual{color:var(--green)}
@media(max-width:480px){.tab{min-height:76px}.tab-title{font-size:14px}.tabs{grid-template-columns:repeat(3,1fr)}}

.faq{margin-top:32px;padding:8px}.faq h2{font-size:24px;margin:4px 0 16px}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin:9px 0;padding:0 16px}.faq summary{padding:15px 28px 15px 0;font-weight:800;line-height:1.5;cursor:pointer}.faq details p{margin:0;padding:0 0 16px;color:var(--muted);font-size:14px;line-height:1.75}.faq details[open]{border-color:#b9cec3;box-shadow:0 6px 18px #173f2b0a}
.site-footer{margin-top:34px;padding:24px 8px 4px;border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:12px}.site-footer nav{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}.site-footer a{color:var(--green);font-weight:700}.policy-page main{width:min(760px,100%)}.policy-header{padding-bottom:10px}.back-link{display:inline-block;margin-bottom:18px;color:var(--green);font-weight:700;text-decoration:none}.policy{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(20px,5vw,40px);box-shadow:0 8px 28px #173f2b0b}.policy h1{font-size:clamp(28px,7vw,42px);letter-spacing:-.03em}.policy h2{margin-top:30px;font-size:20px}.policy p,.policy li{color:var(--muted);font-size:14px;line-height:1.9}.policy ul{padding-left:1.4em}.policy .updated{font-size:12px}.policy-note{padding:14px 16px;background:#f7f6e9;border-radius:12px;color:#4f513d!important}