:root{color-scheme:dark;--background: #070d18;--surface: #111d30;--surface-elevated: #16263b;--surface-soft: #0f1f33;--text-primary: #eaf3ff;--text-muted: #90a7c6;--accent: #63ccff;--accent-strong: #37b8ff;--danger: #f87171;--border: #29415a;--border-strong: #365779;--shadow: 0 18px 44px rgba(0, 0, 0, .44)}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:Inter,Segoe UI,Helvetica Neue,Arial,sans-serif;line-height:1.45;color:var(--text-primary);background:radial-gradient(58rem 40rem at 8% 0%,rgba(99,204,255,.13),transparent 62%),radial-gradient(42rem 36rem at 100% 12%,rgba(55,184,255,.09),transparent 66%),linear-gradient(170deg,#040912 0%,var(--background) 50%,#0a1424 100%)}button,input{font:inherit;color:inherit}h1,h2,p{margin:0}.app{width:min(1320px,100%);margin:0 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ease}.btn:hover{border-color:#6ec7ffd9;background:linear-gradient(180deg,#234061,#1d3553);transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.btn-accent{border-color:#63ccffa8;background:linear-gradient(180deg,#226494,#1a4b73)}.btn-accent:hover{border-color:#a4e1fff2;background:linear-gradient(180deg,#2977ad,#1e5c8a)}.btn.danger{border-color:#e37171a6;background:linear-gradient(180deg,#66353d,#552a31)}.btn.danger:hover{border-color:var(--danger);background:linear-gradient(180deg,#7a3d47,#65343c)}.file-input{position:relative;overflow:hidden}.file-input input{position:absolute;inset:0;opacity:0;cursor:pointer}.btn:focus-visible,input:focus-visible,.file-input:focus-within{outline:2px solid var(--accent);outline-offset:2px}.grid{display:grid;gap:16px;grid-template-columns:minmax(420px,1.18fr) 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auto}.curve-tip{color:var(--text-muted);font-size:13px}.preset-panel{display:flex;flex-direction:column;gap:10px}.preset-actions{display:flex;justify-content:space-between;align-items:center;gap:12px}.preset-actions p{margin-top:4px;font-size:13px;color:var(--text-muted)}.preset-list{margin:0;padding:0;list-style:none;display:grid;gap:8px}.preset-item,.preset-empty{border-radius:12px;border:1px solid var(--border);background:#0f1f33bf;padding:10px}.preset-item{display:flex;align-items:center;justify-content:space-between;gap:12px}.preset-meta strong{font-size:14px}.preset-meta 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