*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;background:#f5f5f3;color:#1a1a1a;min-height:100vh}
.nav{display:flex;align-items:stretch;background:#fff;border-bottom:1px solid #e8e8e5;padding:0 1rem;overflow-x:auto;scrollbar-width:none;gap:2px;position:sticky;top:0;z-index:100}
.nav::-webkit-scrollbar{display:none}
.nav-logo{display:flex;align-items:center;gap:8px;padding:10px 16px 10px 0;margin-right:4px;border-right:1px solid #e8e8e5;flex-shrink:0;text-decoration:none}
.nav-logo-mark{width:24px;height:24px;border-radius:5px;background:#1a1a1a;display:flex;align-items:center;justify-content:center}
.nav-logo-name{font-size:12px;font-weight:600;color:#1a1a1a;white-space:nowrap}
.nav-logo-name span{font-size:10px;color:#999;font-weight:400;margin-left:2px}
.nav-tool{display:flex;align-items:center;padding:0 13px;font-size:12px;color:#888;border-bottom:2.5px solid transparent;white-space:nowrap;cursor:pointer;flex-shrink:0;text-decoration:none;transition:color .15s}
.nav-tool:hover{color:#1a1a1a}
.nav-tool.active{color:#1a1a1a;font-weight:600;border-bottom-color:#1a1a1a}
.main{display:grid;grid-template-columns:250px 1fr;min-height:calc(100vh - 45px)}
.sidebar{background:#fff;border-right:1px solid #e8e8e5;padding:1.25rem 1rem;display:flex;flex-direction:column;gap:1.1rem;overflow-y:auto}
.canvas-area{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding:1.5rem;background:#f5f5f3;gap:14px;overflow-y:auto}
.slabel{font-size:10px;font-weight:600;color:#999;text-transform:uppercase;letter-spacing:.09em;margin-bottom:7px}
.flabel{font-size:11px;color:#888;margin-bottom:4px}
.lang-bar{display:flex;align-items:center;gap:6px;padding-bottom:9px;border-bottom:1px solid #e8e8e5}
.lang-label{font-size:11px;color:#999;flex:1}
.lang-btns{display:flex;gap:3px}
.lbtn{padding:3px 11px;font-size:11px;font-weight:600;border-radius:20px;cursor:pointer;border:1px solid #ddd;background:transparent;color:#888;font-family:monospace;transition:all .1s}
.lbtn.active{background:#1a1a1a;color:#fff;border-color:#1a1a1a}
.seg-row{display:flex;gap:4px}
.seg{flex:1;padding:7px 4px;font-size:11px;border-radius:8px;cursor:pointer;border:1px solid #ddd;background:transparent;color:#888;text-align:center;transition:all .1s;line-height:1.3;font-family:inherit}
.seg:hover{background:#f5f5f3}
.seg.active{background:#1a1a1a;color:#fff;border-color:#1a1a1a}
.seg small{display:block;font-size:9px;opacity:.6;font-family:monospace;margin-top:1px}
.type-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px}
.tbtn{padding:9px 4px;font-size:10px;border-radius:8px;cursor:pointer;border:1px solid #ddd;background:transparent;color:#888;text-align:center;transition:all .12s;line-height:1.4;font-family:inherit}
.tbtn:hover{background:#f5f5f3}
.tbtn.active{background:#1a1a1a;color:#fff;border-color:#1a1a1a}
.tbtn .ticon{font-size:18px;display:block;margin-bottom:3px}
.slider-row{margin-bottom:10px}
.slider-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:5px}
.slider-name{font-size:12px;color:#555}
.slider-val{font-size:13px;font-weight:600;color:#1a1a1a;font-family:monospace}
input[type=range]{width:100%;accent-color:#1a1a1a}
.trow{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#555;padding:5px 0;cursor:pointer;user-select:none}
.ptog{width:34px;height:18px;border-radius:9px;background:#ddd;position:relative;transition:background .2s;flex-shrink:0}
.ptog.on{background:#1D9E75}
.ptog::after{content:'';position:absolute;width:14px;height:14px;border-radius:50%;background:#fff;top:2px;left:2px;transition:left .2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.ptog.on::after{left:18px}
input[type=text],input[type=number],select,textarea{font-family:inherit;font-size:12px;padding:7px 10px;border-radius:8px;border:1px solid #ddd;background:#fff;color:#1a1a1a;width:100%;transition:border-color .15s}
input[type=text]:focus,select:focus,textarea:focus{outline:none;border-color:#888}
textarea{resize:vertical;font-family:monospace;line-height:1.75}
.btn-primary{padding:10px 16px;font-size:13px;font-family:inherit;font-weight:600;border-radius:8px;cursor:pointer;background:#1a1a1a;color:#fff;border:none;width:100%;transition:opacity .15s}
.btn-primary:hover{opacity:.82}
.btn-secondary{padding:10px 16px;font-size:13px;font-family:inherit;border-radius:8px;cursor:pointer;background:transparent;color:#1a1a1a;border:1px solid #ddd;width:100%;transition:background .15s}
.btn-secondary:hover{background:#f5f5f3}
.sact{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:8px}
.puzzle-card{background:#fff;border:1px solid #e8e8e5;border-radius:14px;padding:18px;display:inline-flex;flex-direction:column;align-items:center;gap:12px}
.card-title{font-size:13px;font-weight:600;color:#1a1a1a;align-self:flex-start}
.meta-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.mtag{font-size:11px;color:#999;font-family:monospace}
.color-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:5px}
.cswatch{width:100%;aspect-ratio:1;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:all .15s;position:relative}
.cswatch.active{border-color:#1a1a1a}
.cswatch.active::after{content:'✓';position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:11px;font-weight:700}
.note-box{font-size:10px;color:#999;margin-top:4px;line-height:1.5;padding:6px 9px;background:#f5f5f3;border-radius:8px}
.warn-box{background:#fff8e6;border:1px solid rgba(186,117,23,.3);border-radius:8px;padding:7px 10px;font-size:11px;color:#854F0B;display:none;margin-top:4px}
@media(max-width:640px){.main{grid-template-columns:1fr}.sidebar{border-right:none;border-bottom:1px solid #e8e8e5}}