:root{color:#17221c;background:#f4f6f1;font-family:Microsoft YaHei,Segoe UI,Arial,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:1120px;min-height:100vh;background:#f4f6f1}button,input{font:inherit}button{border:0;cursor:pointer}.splash-screen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 25% 20%,rgba(47,125,74,.18),transparent 28%),radial-gradient(circle at 75% 70%,rgba(194,88,40,.18),transparent 30%),linear-gradient(135deg,#fbfcf8,#eef4ec 52%,#fff6ef);pointer-events:none;animation:splashExit 1.6s ease forwards}.splash-card{width:min(560px,74vw);text-align:center;transform:translateY(-10px);animation:splashLift 1.6s ease forwards}.splash-mark{width:100%;height:190px;margin:0 auto 18px;background:linear-gradient(110deg,#111,#2f7d4a 28%,#c25828 58%,#111);background-size:220% 100%;-webkit-mask:url(/app-logo.svg) center / contain no-repeat;mask:url(/app-logo.svg) center / contain no-repeat;filter:drop-shadow(0 14px 28px rgba(34,49,40,.2));animation:logoGradient 1.6s ease-in-out forwards}.splash-caption{color:#17221c;font-size:24px;font-weight:900}.splash-subtitle{margin-top:7px;color:#6b7568;font-size:15px;font-weight:800;letter-spacing:.18em}.app-shell{min-height:100vh;display:grid;grid-template-rows:auto 1fr}.topbar{min-height:86px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 24px;border-bottom:1px solid #d7ddcf;background:#fbfcf8}.app-title{display:flex;align-items:center;gap:14px;min-width:0}.app-logo{width:52px;height:52px;flex:0 0 auto;display:block;object-fit:contain}h1,h2,p{margin:0}h1{font-size:22px;line-height:1.2;letter-spacing:0}.app-title p{margin-top:4px;color:#6b7568;font-size:13px}.app-note{color:#9a4c20;font-weight:700}.top-actions{display:flex;align-items:center;gap:10px}.icon-button,.primary-button{height:40px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:7px}.icon-button{width:40px;color:#314137;background:#e8ede2}.primary-button{min-width:118px;padding:0 16px;color:#fff;background:#2f7d4a;font-weight:700}.primary-button.alt{background:#c25828}.workspace{min-height:0;display:grid;grid-template-columns:360px minmax(680px,1fr)}.panel{min-height:0;border-right:1px solid #d7ddcf;background:#fbfcf8}.controls-panel{height:calc(100vh - 86px);overflow:auto;overscroll-behavior:contain;padding:18px}.panel-title{display:flex;align-items:center;gap:8px;color:#25352c;font-weight:800}.control-group{margin-top:18px;padding-top:16px;border-top:1px solid #e1e6da}.control-group h2{margin-bottom:12px;color:#445044;font-size:14px;letter-spacing:0}.range-row{display:block;margin:12px 0;-webkit-user-select:none;user-select:none}.range-row span,.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#35443a;font-size:13px}.range-row b{color:#17221c;font-size:13px}.range-row input{width:100%;margin-top:9px;accent-color:#2f7d4a;cursor:ew-resize;touch-action:none;-webkit-user-select:none;user-select:none}.segmented{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;padding:4px;border-radius:8px;background:#e8ede2}.segmented button{height:34px;border-radius:6px;color:#465147;background:transparent;font-weight:700}.segmented button.active{color:#fff;background:#2f7d4a}.preset-row{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:10px}.preset-row.three{grid-template-columns:repeat(3,1fr)}.preset-row button{height:34px;border-radius:7px;color:#26362c;background:#e8ede2;font-weight:700}.preset-row button.active{color:#fff;background:#2f7d4a}.preset-row button:hover{background:#dce5d6}.preset-row button.active:hover{background:#2f7d4a}.toggle-row{height:36px;margin-top:12px}.toggle-row input{width:18px;height:18px;accent-color:#2f7d4a}.preview-panel{min-width:0;min-height:0;position:relative;background:#eef2ea}.preview-3d{width:100%;height:calc(100vh - 134px)}.stats-strip{height:48px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid #d7ddcf;background:#fbfcf8}.stats-strip span{display:flex;align-items:center;justify-content:center;gap:6px;color:#556154;font-size:13px;border-right:1px solid #e1e6da}.stats-strip span:last-child{border-right:0}.stats-strip b{color:#17221c}.stats-strip .warn b{color:#b54122}@keyframes logoGradient{0%{background-position:0% 50%;transform:scale(.96);opacity:0}18%{opacity:1}70%{background-position:100% 50%;transform:scale(1);opacity:1}to{background-position:100% 50%;transform:scale(1.02);opacity:0}}@keyframes splashLift{0%{transform:translateY(8px)}70%{transform:translateY(-4px)}to{transform:translateY(-12px)}}@keyframes splashExit{0%,74%{opacity:1}to{opacity:0}}