:root{--bg:#07090b;--panel:#0e1216;--panel2:#12171d;--line:#252c35;--text:#f4f7fa;--muted:#929ca8;--accent:#7657ff;--good:#6be28b;--r:14px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.topbar{height:64px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4vw;position:sticky;top:0;background:rgba(7,9,11,.92);backdrop-filter:blur(14px);z-index:10}.brand{font-size:24px;font-weight:800;letter-spacing:.16em}.nav{display:flex;gap:24px;color:#c7cdd4}.btn{border:1px solid var(--line);background:#12161b;color:#fff;border-radius:9px;padding:10px 14px;cursor:pointer}.btn.primary{background:#fff;color:#080a0c;border-color:#fff}.btn.accent{background:var(--accent);border-color:var(--accent)}.hero{max-width:1450px;margin:auto;padding:72px 4vw;display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:center}.eyebrow{letter-spacing:.25em;text-transform:uppercase;color:#aeb6c0;font-size:11px}.hero h1{font-size:clamp(48px,5vw,82px);line-height:.98;margin:18px 0 22px;letter-spacing:-.045em}.hero p{font-size:19px;color:#aeb6c0;max-width:650px}.actions{display:flex;gap:12px;margin-top:30px}.demo,.panel{border:1px solid var(--line);background:linear-gradient(145deg,#10151a,#0b0e12);border-radius:var(--r);padding:18px}.demo-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:14px}.label{font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:#aab3bd;margin-bottom:8px}.box{background:#12171c;border:1px solid var(--line);border-radius:10px;padding:14px}.structure-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid #222932}.structure-row:last-child{border:0}.good{color:var(--good)}.features{max-width:1450px;margin:0 auto 80px;padding:0 4vw;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.feature{border:1px solid var(--line);border-radius:12px;padding:20px;background:#0b0e12}.feature h3{margin:0 0 5px}.feature p{margin:0;color:var(--muted)}.studio-shell{height:calc(100vh - 64px);display:grid;grid-template-columns:220px 320px 1fr;min-height:650px}.sidebar,.structure{border-right:1px solid var(--line);padding:18px;background:#0a0d10;overflow:auto}.sidebar .brand{font-size:17px;margin-bottom:20px}.menu-title{color:#6f7985;font-size:10px;letter-spacing:.15em;margin:22px 0 8px}.menu a{display:block;padding:9px 10px;border-radius:8px;color:#c7ced6}.menu a:hover,.menu a.active{background:#141920;color:#fff}.section-card{border:1px solid var(--line);background:#10151a;border-radius:9px;margin:8px 0;overflow:hidden}.section-card summary{cursor:pointer;padding:11px 12px;font-weight:650}.section-body{padding:0 12px 12px}.field{margin:9px 0}.field label{display:block;color:#8f99a5;font-size:11px;margin-bottom:5px}.field input,.field textarea,.field select,.idea-input{width:100%;background:#0b0f13;color:#fff;border:1px solid #303844;border-radius:8px;padding:10px;outline:none}.field textarea{min-height:70px;resize:vertical}.workspace{padding:18px;overflow:auto;background:radial-gradient(circle at 80% 10%,rgba(118,87,255,.08),transparent 26%),#080b0e}.workspace-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.workspace-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.output{min-height:260px;white-space:pre-wrap}.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:12px 0}.tab{padding:7px 10px;border:1px solid var(--line);border-radius:7px;background:#0c1014;color:#bcc4cd;cursor:pointer}.tab.active{background:#f3f5f7;color:#0b0d10}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.score{color:#aeb6c0;margin-top:10px}.dropzone{border:1px dashed #46505d;padding:20px;text-align:center;border-radius:10px;color:#9da7b2;margin-top:12px}.toast{position:fixed;right:20px;bottom:20px;background:#fff;color:#111;padding:10px 14px;border-radius:8px;display:none}.tool-page{max-width:1100px;margin:50px auto;padding:0 24px}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tool-page textarea{width:100%;min-height:420px;background:#0c1014;color:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}@media(max-width:1000px){.hero{grid-template-columns:1fr}.features{grid-template-columns:1fr}.studio-shell{grid-template-columns:190px 280px 1fr}.workspace-grid{grid-template-columns:1fr}}@media(max-width:760px){.nav{display:none}.studio-shell{height:auto;display:block}.sidebar,.structure{border-right:0;border-bottom:1px solid var(--line)}.hero{padding-top:42px}.demo-grid,.tool-grid{grid-template-columns:1fr}}