:root{
  --bg:#070b14;
  --panel:#0e1422;
  --panel-2:#111a2d;
  --line:rgba(255,255,255,0.09);
  --text:#eef3ff;
  --muted:#9caad1;
  --accent:#687aff;
  --accent-2:#5eead4;
  --warning:#ffb86b;
  --shadow:0 22px 60px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(circle at top left,#182341,transparent 28%),radial-gradient(circle at bottom right,#1b3655,transparent 28%),var(--bg);color:var(--text);font-family:Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;min-height:100%}
a{color:#b7c7ff}
.page-shell{max-width:1400px;margin:0 auto;padding:26px}
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
.hero-card,.panel{background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);backdrop-filter: blur(8px)}
.hero-card{padding:24px 24px 22px;position:relative;overflow:hidden}
.hero-card:before{content:"";position:absolute;inset:-35% auto auto -5%;width:340px;height:340px;background:radial-gradient(circle,#687aff45,transparent 60%);pointer-events:none}
.hero-kicker{display:inline-flex;gap:10px;align-items:center;padding:8px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.08);color:#d7e1ff;background:rgba(9,15,30,.45);font-size:13px;letter-spacing:.02em}
.hero h1{margin:18px 0 10px;font-size:40px;line-height:1.02;max-width:700px}
.hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.6;max-width:760px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.meta-pill{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);color:#c6d1f2;font-size:13px}
.hero-side{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.stat-card{padding:18px;border-radius:22px;background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.015));border:1px solid rgba(255,255,255,.08)}
.stat-label{font-size:12px;text-transform:uppercase;color:#90a0c9;letter-spacing:.1em;margin-bottom:8px}
.stat-value{font-size:22px;font-weight:700}
.stat-sub{font-size:13px;color:#9eb0db;margin-top:8px;line-height:1.45}
.main-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;margin-top:22px}
.panel{padding:20px}
.section-title{font-size:14px;text-transform:uppercase;letter-spacing:.12em;color:#8fa3d1;margin-bottom:14px}
.preset-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.preset-card{background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.08);border-radius:20px;padding:14px 12px 13px;cursor:pointer;color:var(--text);text-align:left;transition:.16s transform,.16s border-color,.16s box-shadow}
.preset-card:hover{transform:translateY(-2px);border-color:rgba(142,159,255,.45)}
.preset-card.active{border-color:rgba(108,135,255,.72);box-shadow:0 0 0 1px rgba(108,135,255,.18),0 18px 40px rgba(34,51,145,.25)}
.preset-card.locked{opacity:.65}
.preset-icon{font-size:24px;margin-bottom:10px}
.preset-label{font-weight:700;margin-bottom:4px}
.preset-meta{font-size:12px;color:#99abd6}
.control-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}
.control{padding:14px 15px;border-radius:18px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08)}
.control label{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:#d9e4ff;margin-bottom:10px}
.control small{color:#94a6d4}
.control input[type=range],.control select,.control input[type=number]{width:100%}
.control select,.control input[type=number]{background:#0a1020;color:#eef4ff;border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:11px 12px;font-size:14px}
input[type=range]{appearance:none;height:8px;border-radius:999px;background:linear-gradient(90deg,#24335f,#10162a)}
input[type=range]::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;background:linear-gradient(180deg,#fff,#95a7ff);box-shadow:0 3px 12px rgba(0,0,0,.4)}
.canvas-wrap{padding:18px;border-radius:22px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08)}
canvas{width:100%;height:220px;display:block}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
button.action{border:0;border-radius:14px;padding:12px 16px;font-weight:700;cursor:pointer;color:var(--text);background:linear-gradient(180deg,#5067ff,#3348d0);box-shadow:0 10px 26px rgba(52,78,208,.35)}
button.action.secondary{background:linear-gradient(180deg,#18223e,#121b31);border:1px solid rgba(255,255,255,.08);box-shadow:none}
button.action.warning{background:linear-gradient(180deg,#ffb86b,#ef8a39);color:#281708}
button:disabled{opacity:.55;cursor:not-allowed}
.pack-list{display:grid;gap:10px;margin-top:18px}
.pack-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08)}
.pack-dot{width:14px;height:14px;border-radius:50%;display:inline-block;box-shadow:0 0 0 3px rgba(255,255,255,.04)}
.pack-item span:first-of-type{margin-right:12px}
.pack-mini{font-size:12px;color:#98acd9}
.footer-note{margin-top:18px;font-size:13px;color:#9caad1;line-height:1.6}
.pro-box{margin-top:18px;padding:16px 18px;border-radius:20px;border:1px dashed rgba(134,153,255,.45);background:linear-gradient(180deg,rgba(104,122,255,.08),rgba(94,234,212,.04))}
.pro-title{display:flex;justify-content:space-between;align-items:center;gap:12px;font-weight:700;margin-bottom:8px}
.badge{display:inline-flex;padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);font-size:12px;color:#d7e4ff}
.toast{position:fixed;right:24px;bottom:24px;padding:14px 16px;background:#0c1220;color:#fff;border:1px solid rgba(255,255,255,.1);border-radius:16px;box-shadow:var(--shadow);opacity:0;transform:translateY(8px);transition:.2s}
.toast.show{opacity:1;transform:translateY(0)}
.lite .locked{position:relative}
.lite .locked::after{content:'Pro';position:absolute;top:10px;right:10px;padding:5px 8px;border-radius:999px;background:#0a1020;border:1px solid rgba(255,255,255,.1);font-size:11px;color:#d4ddff}
@media (max-width: 1100px){.hero,.main-grid{grid-template-columns:1fr}.preset-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width: 760px){.page-shell{padding:16px}.preset-grid,.control-grid,.hero-side{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:32px}.actions{flex-direction:column}.actions .action{width:100%}}
@media (max-width: 520px){.preset-grid,.control-grid,.hero-side{grid-template-columns:1fr}}