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20px 0 16px;border-radius:26px;border:none;background:var(--ai);color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;box-shadow:0 8px 22px #23201c47,0 2px 6px #23201c33;z-index:60}.rail-btn.railgear:hover{background:var(--ai);color:#fff}.rail-btn.railgear svg{flex:none}.railgear-lbl{display:inline;line-height:1}.props-panel{display:none;position:absolute;top:0;right:0;bottom:0;width:min(88vw,340px);z-index:70;box-shadow:-12px 0 40px #00000038;padding-bottom:calc(84px + env(safe-area-inset-bottom))}.props-panel.open{display:flex}.panel-close{display:flex;position:absolute;top:12px;right:12px;width:36px;height:36px;align-items:center;justify-content:center;border:1px solid var(--washi-line);border-radius:var(--r-md);background:#fff;color:var(--text-2);z-index:2}.panel-backdrop{display:block;position:absolute;top:0;right:0;bottom:0;left:0;background:#1c1c1a61;z-index:65}}@media (max-width: 680px){.app-shell{height:calc(100vh - var(--header-h));height:calc(100dvh - var(--header-h))}.studio{flex-direction:column}.tool-rail{width:100%;flex-direction:row;justify-content:flex-start;gap:5px;padding:8px;border-right:none;border-bottom:1px solid var(--washi-line);overflow-x:auto}.tool-rail .rail-btn{flex:none}.rail-sep{width:1px;height:32px;margin:0 4px;flex:none}.rail-spacer{flex:0}.rail-btn{width:44px;height:44px}.canvas-workspace{padding:14px}.props-panel{width:min(92vw,360px)}.zoomctl{display:none}.app-header .inner{padding:0 12px;gap:8px}.app-header .app-head-left{gap:10px;min-width:0}.app-header .brand .sub{display:none}.app-header .brand .name{font-size:16px}.app-header .lbl{display:none}.app-header .btn-sm{padding:9px 11px}.toast{bottom:calc(80px + env(safe-area-inset-bottom))}}@media (max-width: 380px){.app-header .brand .name{display:none}}.canvas-frame.paper{background:#fdfcf8}.slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:8px;border-radius:8px;background:linear-gradient(var(--ai),var(--ai)) no-repeat,var(--washi-2);background-size:var(--p, 0%) 100%;touch-action:none;box-shadow:inset 0 1px 2px #23201c1f;outline:none;cursor:pointer}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:22px;height:22px;border-radius:50%;background:var(--ai);border:2px solid #fff;box-shadow:var(--shadow-sm);cursor:pointer}.slider::-moz-range-thumb{width:20px;height:20px;border:2px solid #fff;border-radius:50%;background:var(--ai);box-shadow:var(--shadow-sm);cursor:pointer}.slider:disabled{opacity:.5;cursor:default}.brush-row{display:flex;align-items:center;gap:10px}.brush-dot{width:34px;height:34px;flex:none;border:1px solid var(--washi-line);border-radius:var(--r-md);background:#fff;display:flex;align-items:center;justify-content:center;transition:all .14s}.brush-dot:hover{border-color:var(--ai-soft)}.brush-dot.active{border-color:var(--ai);box-shadow:inset 0 0 0 1px var(--ai)}.brush-dot i{display:block;border-radius:50%}.swatches{display:flex;gap:12px}.swatch{width:36px;height:36px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--washi-line);cursor:pointer;transition:transform .12s}.swatch:hover{transform:scale(1.08)}.swatch.active{box-shadow:0 0 0 2px var(--ai)}.font-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.font-opt{display:flex;align-items:center;gap:10px;border:1px solid var(--washi-line);border-radius:var(--r-md);background:#fff;padding:8px 10px;transition:all .14s;text-align:left}.font-opt:hover{border-color:var(--ai-soft);background:var(--ai-tint)}.font-opt.active{border-color:var(--ai);background:var(--ai-tint);box-shadow:inset 0 0 0 1px var(--ai)}.font-opt .pv{font-size:22px;color:var(--sumi);line-height:1;width:26px;text-align:center;flex:none}.font-opt .nm{font-size:12px;color:var(--text-2);font-weight:600}.seg{display:flex;gap:6px;background:var(--washi-2);border-radius:var(--r-md);padding:4px}.seg button{flex:1;border:none;background:transparent;border-radius:6px;padding:8px 6px;font-family:var(--font-ui);font-size:13px;font-weight:600;color:var(--text-2);transition:all .14s}.seg button:hover{color:var(--ai)}.seg button.active{background:#fff;color:var(--ai);box-shadow:var(--shadow-sm)}.tip-card{background:var(--ai-tint);border-radius:var(--r-md);padding:12px;font-size:12.5px;color:var(--text-2);line-height:1.8}.tip-card b{color:var(--ai)}.paper-seg{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.paper-opt{border:1px solid var(--washi-line);border-radius:var(--r-md);background:#fff;padding:8px 4px;font-family:var(--font-ui);font-size:12.5px;font-weight:600;color:var(--text-2);transition:all .14s}.paper-opt:hover{border-color:var(--ai-soft);background:var(--ai-tint)}.paper-opt.active{border-color:var(--ai);background:var(--ai-tint);color:var(--ai);box-shadow:inset 0 0 0 1px var(--ai)}.free-size{display:flex;align-items:flex-end;gap:8px;margin-top:12px}.free-size label{flex:1;display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--text-2);font-weight:600}.free-size input{width:100%;border:1px solid var(--washi-line);border-radius:var(--r-md);background:#fff;padding:8px 10px;font-family:var(--font-ui);font-size:14px;color:var(--text)}.free-size input:focus{border-color:var(--ai);outline:none}.free-size .free-x{padding-bottom:9px;color:var(--text-3)}.paper-readout{font-size:12px;color:var(--text-3);margin-top:8px;text-align:right}.container.narrow{max-width:760px}#contact-form{max-width:620px;margin:0 auto;transition:opacity .2s ease}.form__notice{background:var(--ai-tint);border-radius:var(--r-md);padding:14px 16px;font-size:13.5px;color:var(--text-2);line-height:1.8;margin-bottom:26px}.form__notice a{color:var(--ai);text-decoration:underline}.form__success{background:#e7f1e7;border:1px solid #bcd9bc;border-radius:var(--r-md);padding:16px 18px;font-size:14.5px;color:#2f5d33;line-height:1.8;margin-bottom:24px}.field{display:flex;flex-direction:column;gap:7px;margin-bottom:22px}.field>label{font-size:14px;font-weight:600;color:var(--text)}.field .req{display:inline-block;font-size:11px;font-weight:700;color:var(--shu);margin-left:6px;padding:1px 7px;border:1px solid var(--shu);border-radius:999px;line-height:1.6}.field__hint{font-size:12.5px;color:var(--text-3)}.field input:not([type=checkbox]),.field select,.field textarea{width:100%;border:1px solid var(--washi-line);border-radius:var(--r-md);background:#fff;padding:12px 14px;font-family:var(--font-ui);font-size:15px;color:var(--text);transition:border-color .14s,box-shadow .14s}.field input:not([type=checkbox]):focus,.field select:focus,.field textarea:focus{border-color:var(--ai);outline:none;box-shadow:inset 0 0 0 1px var(--ai)}.field textarea{min-height:160px;resize:vertical;line-height:1.8}.field label.agree{flex-direction:row;align-items:center;gap:10px;font-weight:600;font-size:14px;cursor:pointer}.field label.agree input[type=checkbox]{width:18px;height:18px;flex:0 0 auto;cursor:pointer}.field label.agree a{color:var(--ai);text-decoration:underline}.btn-block{width:100%}.legal{max-width:720px;margin:0 auto;color:var(--text-2);line-height:1.95;font-size:15.5px}.legal h3{font-family:var(--font-serif);font-size:20px;color:var(--text);margin:34px 0 10px}.legal p{margin:0 0 14px}.legal ul{margin:0 0 14px;padding-left:1.4em}.legal li{margin:0 0 6px}.legal-updated{margin-top:32px;font-size:13px;color:var(--text-3);text-align:right}