:root{
  --bg:#08080b; --bg2:#0e0e13;
  --panel:rgba(255,255,255,.045); --panel2:rgba(255,255,255,.07);
  --border:rgba(255,255,255,.1); --border2:rgba(255,255,255,.16);
  --text:#f6f6f8; --muted:#b6b6c0; --dim:#7c7c88;
  --acc:#0a84ff; --violet:#7c6cff; --teal:#30d1c8;
  --green:#30d158; --amber:#ffd60a; --red:#ff453a;
  --grad:linear-gradient(135deg,#7c6cff,#0a84ff 55%,#30d1c8);
  --r:20px; --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Inter,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:radial-gradient(900px 400px at 50% -80px,rgba(124,108,255,.14),transparent 60%),radial-gradient(700px 340px at 85% 0,rgba(48,209,200,.08),transparent 60%),var(--bg);color:var(--text);font-family:var(--font);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit}
code{background:rgba(255,255,255,.08);border:1px solid var(--border);border-radius:6px;padding:1px 6px;font-size:.88em}
.container{max-width:920px;margin:0 auto;padding:0 20px}
/* nav */
nav{position:sticky;top:0;z-index:20;background:rgba(8,8,11,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:920px;margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:18px;letter-spacing:-.02em}
.brand-mark{display:inline-grid;place-items:center;width:30px;height:30px}
.brand-mark svg,.brand-mark img{width:30px;height:30px;display:block}
.brand-name{letter-spacing:-.02em}
.nav-links{display:flex;gap:2px;margin-left:auto}
.nav-links a{font-size:13.5px;color:var(--muted);text-decoration:none;padding:8px 13px;border-radius:100px;transition:.18s;min-height:44px;display:inline-flex;align-items:center}
.nav-links a:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-cta{font-size:13px;font-weight:800;text-decoration:none;background:#fff;color:#000;padding:9px 16px;border-radius:100px;white-space:nowrap}
.nav-cta:hover{transform:translateY(-1px)}
/* hero */
.hero{padding:72px 0 30px;text-align:center}
.hero-mark img{filter:drop-shadow(0 12px 40px rgba(124,108,255,.45));animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:#cfc6ff;background:rgba(124,108,255,.12);border:1px solid rgba(124,108,255,.35);padding:7px 14px;border-radius:100px;margin-top:18px}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(48,209,88,.6);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(48,209,88,0)}100%{box-shadow:0 0 0 0 rgba(48,209,88,0)}}
.hero h1{font-size:clamp(38px,6.4vw,62px);letter-spacing:-.045em;line-height:1.0;margin:20px 0 14px}
.lede{color:var(--muted);max-width:600px;margin:0 auto;font-size:16.5px}
.lede em{color:#fff;font-style:normal;font-weight:700}
.hero-ctas{display:flex;gap:10px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;border:0;border-radius:100px;padding:14px 26px;font-weight:800;font-size:14.5px;cursor:pointer;text-decoration:none;transition:.18s}
.btn-main{background:var(--grad);color:#fff;box-shadow:0 10px 32px rgba(10,132,255,.35)}
.btn-main:hover{transform:translateY(-1px);box-shadow:0 14px 38px rgba(10,132,255,.45)}
.btn-ghost{background:rgba(255,255,255,.07);color:#fff;border:1px solid var(--border2)}
.btn-ghost:hover{background:rgba(255,255,255,.11)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:30px auto 0;max-width:640px}
.trust div{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:13px 8px}
.trust b{display:block;font-size:18px;letter-spacing:-.02em}
.trust span{font-size:11.5px;color:var(--dim)}
@media(max-width:560px){.trust{grid-template-columns:repeat(2,1fr)}}
/* sections */
.sec-h{font-size:clamp(22px,3.4vw,30px);letter-spacing:-.03em;margin:52px 0 6px}
.sec-sub{color:var(--muted);font-size:14.5px;margin:0 0 14px;max-width:640px}
/* steps intro */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
@media(max-width:720px){.steps{grid-template-columns:1fr}}
.step{background:var(--panel);border:1px solid var(--border);border-radius:var(--r);padding:20px;transition:.2s}
.step:hover{border-color:var(--border2);transform:translateY(-2px)}
.step-n{font-family:var(--mono);font-size:12px;font-weight:800;color:#fff;background:var(--grad);display:inline-block;padding:4px 10px;border-radius:100px;margin-bottom:10px}
.step h3{margin:0 0 6px;font-size:16px;letter-spacing:-.01em}
.step p{margin:0;color:var(--muted);font-size:13.5px}
.compare{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:stretch;margin-top:12px}
@media(max-width:640px){.compare{grid-template-columns:1fr}.cmp-arrow{transform:rotate(90deg);justify-self:center}}
.cmp{border-radius:var(--r);padding:18px;border:1px solid var(--border)}
.cmp.before{background:rgba(255,69,58,.06)}
.cmp.after{background:rgba(48,209,88,.07);border-color:rgba(48,209,88,.3)}
.cmp-tag{font-size:10.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;opacity:.8}
.cmp b{display:block;margin:6px 0 4px;font-size:15px}
.cmp span:last-child{font-size:13px;color:var(--muted)}
.cmp-arrow{align-self:center;font-size:22px;color:var(--dim)}
/* optimizer card */
.card{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.03));border:1px solid var(--border);border-radius:24px;padding:24px;margin:18px 0}
.card.glow{box-shadow:0 24px 80px rgba(10,132,255,.12)}
.steps-mini{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.mode-row{display:flex;gap:8px;margin-bottom:4px;flex-wrap:wrap}
.mode{flex:1 1 200px;background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--muted);border-radius:100px;padding:11px 14px;font-weight:800;font-size:13px;cursor:pointer;transition:.18s}
.mode.on{color:#fff;border-color:rgba(124,108,255,.55);background:rgba(124,108,255,.14)}
.verdict{font-size:13px;margin:10px 2px 0;min-height:20px;color:var(--muted)}
.verdict.warn{color:var(--amber)}
.verdict.ok{color:var(--green)}
.verdict:empty{display:none}
.steps-mini span{font-size:11.5px;font-weight:800;color:var(--dim);background:rgba(255,255,255,.05);border:1px solid var(--border);padding:6px 12px;border-radius:100px}
.steps-mini .on{color:#fff;border-color:rgba(124,108,255,.5);background:rgba(124,108,255,.14)}
.drop-zone{border:1.5px dashed rgba(255,255,255,.24);border-radius:var(--r);padding:44px 20px;text-align:center;cursor:pointer;transition:.2s;background:rgba(255,255,255,.015)}
.drop-zone:hover,.drop-zone.drag{border-color:transparent;background:linear-gradient(var(--bg2),var(--bg2)) padding-box,var(--grad) border-box;border:1.5px solid transparent}
.drop-zone:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.drop-icon{display:inline-grid;place-items:center;width:52px;height:52px;border-radius:16px;background:var(--grad);margin-bottom:12px;box-shadow:0 10px 28px rgba(10,132,255,.35)}
#dropTitle{font-weight:800;font-size:16px;letter-spacing:-.01em}
#dropSub{color:var(--dim);font-size:13px;margin-top:6px}
.meta-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:16px}
.meta-grid .m{background:rgba(0,0,0,.3);border:1px solid var(--border);border-radius:14px;padding:11px 6px;text-align:center}
.m .k{font-size:9.5px;font-weight:800;text-transform:uppercase;letter-spacing:.12em;color:var(--dim)}
.m .v{font-size:13px;font-weight:700;margin-top:4px;word-break:break-word}
@media(max-width:640px){.meta-grid{grid-template-columns:repeat(2,1fr)}.meta-grid .m:last-child{grid-column:1/-1}}
.note{display:none;margin-top:12px;padding:13px 15px;border-radius:14px;background:rgba(255,214,10,.08);border:1px solid rgba(255,214,10,.3);font-size:13px}
.action-row{display:flex;gap:9px;margin-top:16px;flex-wrap:wrap}
.btn-run{flex:1;background:#fff;color:#000;border:0;border-radius:100px;padding:15px 20px;font-weight:800;font-size:15px;cursor:pointer;min-width:200px;transition:.18s}
.btn-run:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 12px 30px rgba(255,255,255,.18)}
.btn-run:disabled{opacity:.35;cursor:not-allowed}
.btn-dl,.btn-clear{background:rgba(255,255,255,.07);color:#fff;border:1px solid var(--border2);border-radius:100px;padding:15px 20px;font-weight:700;font-size:14px;cursor:pointer;transition:.18s}
.btn-dl:hover,.btn-clear:hover{background:rgba(255,255,255,.12)}
.btn-dl{display:none}
.btn-dl.show{display:inline-block}
.fine{font-size:12px;color:var(--dim);margin:12px 2px 0;text-align:center}
/* terminal */
.terminal{background:#050507;border:1px solid var(--border);border-radius:16px;margin-top:16px;overflow:hidden}
.term-bar{display:flex;align-items:center;gap:10px;padding:11px 15px;border-bottom:1px solid var(--border);font-size:12.5px;color:var(--muted)}
.dots{display:inline-flex;gap:6px}
.dots i{width:10px;height:10px;border-radius:50%;background:#2c2c32;display:block}
.dots i:first-child{background:#ff5f57}.dots i:nth-child(2){background:#febc2e}.dots i:nth-child(3){background:#28c840}
.proc-status{margin-left:auto;font-weight:800;color:#fff;background:rgba(255,255,255,.08);padding:3px 11px;border-radius:100px;font-size:11.5px}
.proc-log{padding:15px;font-family:var(--mono);font-size:12.5px;max-height:230px;overflow:auto;min-height:60px}
.log-line{padding:2.5px 0;color:#c9c9d4}
.log-line.hi{color:#fff;font-weight:700}
.log-line.ok{color:var(--green)}
.log-line.err{color:var(--red)}
.log-line.warn{color:var(--amber)}
.progress-track{height:6px;background:rgba(255,255,255,.09);border-radius:100px;overflow:hidden;margin:12px 15px 6px}
.progress-fill{height:100%;width:0;background:var(--grad);border-radius:100px;transition:width .25s}
.progress-meta{display:flex;justify-content:space-between;padding:0 15px 13px;font-size:12px;color:var(--muted)}
#processingView{display:none}
/* library */
.lib-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap}
.lib-item{display:flex;align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--border);background:var(--panel);border-radius:16px;margin-top:8px}
.lib-item-tx{flex:1;min-width:0}
.lib-item-tx b{display:block;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lib-item-tx span{font-size:11.5px;color:var(--dim)}
.lib-mini{background:rgba(255,255,255,.08);border:1px solid var(--border2);color:#fff;border-radius:100px;padding:8px 14px;font-size:12.5px;font-weight:800;cursor:pointer;white-space:nowrap}
.lib-mini:hover{background:rgba(255,255,255,.14)}
.lib-mini.danger{color:#ff9a9a;border-color:rgba(255,69,58,.4);background:rgba(255,69,58,.08)}
.lib-mini.danger:hover{background:rgba(255,69,58,.16)}
.lib-acts{display:flex;gap:7px;flex:0 0 auto}
.btn-clear.danger{color:#ff9a9a;border-color:rgba(255,69,58,.4)}
@media(max-width:560px){.lib-acts .lib-mini{padding:8px 11px;font-size:12px}.lib-head .btn-clear{width:100%}}
/* analyzer */
.arow{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid var(--border);font-size:13.5px}
.arow span{color:var(--dim);flex-shrink:0}
.arow b{text-align:right;word-break:break-word}
.pill{display:inline-block;font-size:12px;font-weight:800;padding:5px 13px;border-radius:100px;margin:10px 0}
.pill.ok{background:rgba(48,209,88,.13);color:var(--green);border:1px solid rgba(48,209,88,.35)}
.pill.warn{background:rgba(255,214,10,.1);color:var(--amber);border:1px solid rgba(255,214,10,.3)}
/* guide */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:640px){.grid2{grid-template-columns:1fr}}
.g-num{font-family:var(--mono);font-size:11.5px;font-weight:800;background:rgba(255,255,255,.09);border:1px solid var(--border2);display:inline-block;padding:3px 10px;border-radius:100px;margin-bottom:10px;color:#fff}
/* faq */
.qa details{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:16px 18px;margin-top:9px;transition:.18s}
.qa details[open]{border-color:var(--border2)}
.qa summary{font-weight:700;cursor:pointer;font-size:14.5px;letter-spacing:-.01em}
.qa p{color:var(--muted);font-size:14px;margin:10px 0 2px}
/* footer */
footer{border-top:1px solid var(--border);margin-top:56px;padding:28px 0 70px;color:var(--dim);font-size:13px;text-align:center}
.foot-brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;color:#fff;font-size:15px;margin-bottom:6px}
footer p{margin:4px 0}
/* toast */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(16px);background:#17171d;border:1px solid var(--border2);color:#fff;padding:13px 20px;border-radius:100px;font-size:13.5px;font-weight:600;opacity:0;pointer-events:none;transition:.25s;z-index:50;max-width:92vw;box-shadow:0 16px 50px rgba(0,0,0,.5)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{border-color:rgba(255,69,58,.55)}
.toast.ok{border-color:rgba(48,209,88,.55)}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}
/* ---- mobile ---- */
img,svg{max-width:100%}
body{overflow-x:hidden;-webkit-tap-highlight-color:transparent}
@media(max-width:720px){
  .nav-inner{flex-wrap:wrap;gap:10px;padding:10px 14px}
  .brand{font-size:16.5px}
  .nav-cta{margin-left:auto;padding:8px 14px;font-size:12.5px}
  .nav-links{display:flex;order:3;flex-basis:100%;margin:0;gap:2px;overflow-x:auto;padding:2px 0 6px;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{flex:0 0 auto;font-size:13px;padding:8px 12px}
  .container{padding:0 14px}
  .hero{padding:48px 0 22px}
  .hero-ctas .btn{flex:1 1 100%;justify-content:center}
  .card{padding:16px;border-radius:20px}
  .steps-mini{flex-wrap:wrap}
  .action-row{flex-direction:column}
  .btn-run,.btn-dl,.btn-clear{width:100%;min-width:0}
  .arow{flex-direction:column;gap:2px}
  .arow b{text-align:left}
  .toast{bottom:14px;width:calc(100% - 28px);max-width:calc(100% - 28px);text-align:center}
}
@media(max-width:380px){
  .trust{grid-template-columns:repeat(2,1fr);gap:8px}
  .hero h1{font-size:34px}
}