:root{
  --bg:#08080f;
  --bg2:#0d0d18;
  --panel:#12121f;
  --panel2:#181828;
  --line:#262638;
  --line2:#33334a;
  --text:#ecedf5;
  --muted:#9a9cb5;
  --accent:#00e0ff;
  --violet:#6c5ce7;
  --grad:linear-gradient(90deg,#6c5ce7,#00e0ff);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.grain{position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(1200px 600px at 70% -10%,rgba(108,92,231,.18),transparent 60%),
    radial-gradient(900px 500px at 10% 10%,rgba(0,224,255,.10),transparent 55%);
}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.accent{color:var(--accent)}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:rgba(8,8,15,.72);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.logo{display:inline-flex;align-items:center;justify-content:center}
.brand-name .accent{color:var(--accent)}
.links{display:flex;gap:22px;font-size:14.5px;color:var(--muted);margin-left:auto}
.links a:hover{color:var(--text)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line2);background:var(--panel2);color:var(--text);border-radius:12px;padding:11px 18px;font-size:14.5px;font-weight:600;cursor:pointer;transition:.18s}
.btn:hover{border-color:var(--accent);transform:translateY(-1px)}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn.primary{background:var(--grad);border:none;color:#04121a}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent}
.btn.big{width:100%;padding:15px;font-size:16px;border-radius:14px}
.btn.sm{padding:8px 13px;font-size:13px;border-radius:10px}

/* hero */
.hero{max-width:1180px;margin:0 auto;padding:72px 24px 40px;text-align:center}
.badge{display:inline-block;padding:7px 15px;border-radius:999px;border:1px solid var(--line2);background:var(--panel);color:var(--muted);font-size:13px;margin-bottom:22px}
h1{font-size:clamp(34px,6vw,64px);line-height:1.08;letter-spacing:-.02em;margin:0 0 18px}
.lead{max-width:640px;margin:0 auto 40px;color:var(--muted);font-size:18px}
.hero-stats{display:flex;justify-content:center;gap:44px;margin-top:34px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:24px;color:var(--text)}
.hero-stats span{font-size:13px;color:var(--muted)}

/* generator */
.generator{max-width:1060px;margin:0 auto;text-align:left;background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line2);border-radius:22px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.tabs{display:flex;gap:4px;padding:12px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.tab{flex:1;max-width:200px;padding:11px;border:none;background:transparent;color:var(--muted);font-size:15px;font-weight:600;border-radius:11px;cursor:pointer}
.tab.active{background:var(--panel2);color:var(--text);box-shadow:inset 0 0 0 1px var(--line2)}
.gen-body{display:grid;grid-template-columns:minmax(320px,440px) 1fr;gap:0}
.gen-left{padding:22px;display:flex;flex-direction:column;gap:16px;border-right:1px solid var(--line)}
.panel{display:none}
.panel.active{display:block}
.field-label{display:block;font-size:13px;color:var(--muted);margin-bottom:9px;font-weight:600}
textarea{width:100%;resize:vertical;min-height:110px;background:var(--panel2);border:1px solid var(--line2);border-radius:14px;color:var(--text);padding:14px;font-size:15px;font-family:inherit}
textarea:focus{outline:none;border-color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{background:var(--panel2);border:1px solid var(--line2);color:var(--muted);border-radius:999px;padding:7px 13px;font-size:13px;cursor:pointer;transition:.15s}
.chip:hover{color:var(--text);border-color:var(--accent)}

.drop{border:1.5px dashed var(--line2);border-radius:16px;padding:30px 18px;text-align:center;cursor:pointer;transition:.18s;background:var(--panel)}
.drop:hover,.drop.drag{border-color:var(--accent);background:var(--panel2)}
.drop-icon{font-size:30px}
.drop-text{color:var(--text);margin:10px 0 4px}
.drop-hint{color:var(--muted);font-size:12.5px;margin:0}
.preview{max-width:100%;max-height:180px;border-radius:10px;margin-top:12px}
.hidden{display:none!important}
.note{font-size:13px;color:var(--muted);text-align:center;margin:0}

.gen-right{padding:22px;display:flex;flex-direction:column;gap:14px;min-height:420px}
.viewport{position:relative;flex:1;min-height:360px;border-radius:16px;background:#000;border:1px solid var(--line);overflow:hidden}
.viewport canvas{display:block;width:100%;height:100%}
.viewport-empty,.viewport-status{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--muted);pointer-events:none}
.vp-icon{font-size:44px;opacity:.7}
.spinner{width:34px;height:34px;border-radius:50%;border:3px solid var(--line2);border-top-color:var(--accent);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.viewport-actions{display:flex;gap:10px;justify-content:center}

/* sections */
.section{max-width:1180px;margin:0 auto;padding:70px 24px 0;text-align:center}
.section h2{font-size:clamp(26px,4vw,42px);letter-spacing:-.01em;margin:0 0 10px}
.sub{color:var(--muted);margin:0 0 34px}

/* gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.g-card{background:var(--panel);border:1px solid var(--line2);border-radius:16px;overflow:hidden;cursor:pointer;transition:.18s}
.g-card:hover{transform:translateY(-3px);border-color:var(--accent)}
.g-card canvas{width:100%;height:160px;display:block;background:#000}
.g-card .g-name{padding:12px 14px;font-size:14px;font-weight:600;text-align:left}

/* features */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:10px}
.feature{background:var(--panel);border:1px solid var(--line2);border-radius:18px;padding:26px;text-align:left}
.f-icon{font-size:30px;margin-bottom:12px}
.feature h3{margin:0 0 8px;font-size:19px}
.feature p{color:var(--muted);margin:0;font-size:14.5px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:10px}
.plan{background:var(--panel);border:1px solid var(--line2);border-radius:20px;padding:30px;text-align:left;position:relative}
.plan.featured{border-color:var(--violet);box-shadow:0 20px 60px rgba(108,92,231,.25)}
.plan-tag{position:absolute;top:-12px;left:24px;background:var(--grad);color:#04121a;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px}

/* license activation */
.pro-tag{display:inline-block;margin-left:6px;font-size:10px;font-weight:800;letter-spacing:.4px;color:#04121a;background:var(--grad);padding:2px 7px;border-radius:999px;vertical-align:middle}
.license-row{display:flex;gap:8px;align-items:center}
.license-row input{flex:1;min-width:0;padding:11px 12px;background:var(--panel2);border:1px solid var(--line2);border-radius:11px;color:var(--text);font-size:14px;outline:none}
.license-row input:focus{border-color:var(--accent, #00e0ff)}
.plan-badge{font-size:12px;font-weight:700;color:#04121a;background:var(--grad);padding:6px 10px;border-radius:999px;white-space:nowrap}
.plan h3{margin:0 0 6px;font-size:20px}
.price{font-size:40px;font-weight:800;letter-spacing:-.02em}
.price span{font-size:15px;color:var(--muted);font-weight:500}
.plan ul{list-style:none;padding:0;margin:18px 0 24px;color:var(--muted);font-size:14.5px}
.plan li{padding:6px 0 6px 26px;position:relative}
.plan li:before{content:"✓";position:absolute;left:0;color:var(--accent)}
.plan .btn{width:100%}

/* faq */
.section.narrow{max-width:760px}
details{background:var(--panel);border:1px solid var(--line2);border-radius:14px;padding:18px 22px;margin-bottom:12px;text-align:left}
summary{cursor:pointer;font-weight:600;font-size:16px}
details p{color:var(--muted);margin:12px 0 0}

/* footer */
.footer{border-top:1px solid var(--line);margin-top:80px;padding:34px 24px;text-align:center}
.footer-inner{max-width:1180px;margin:0 auto;display:flex;flex-direction:column;gap:12px;align-items:center}
.foot-note{color:var(--muted);font-size:13px;margin:0}
.foot-links{display:flex;gap:20px;font-size:14px;color:var(--muted)}
.foot-links a:hover{color:var(--text)}

@media (max-width:860px){
  .links{display:none}
  .gen-body{grid-template-columns:1fr}
  .gen-left{border-right:none;border-bottom:1px solid var(--line)}
  .hero-stats{gap:24px}
}