/* ============================================
   ARNIE AI — a BLCKBX product
   Centered, head-on, red identity (#dc2626).
   ============================================ */
:root{
  --black:#0e0e0f; --panel:#161617; --panel-2:#1d1d1f; --line:#2b2b2e;
  --red:#dc2626; --red-2:#ef4444; --red-dim:#991b1b;
  --text:#f5f5f5; --muted:#a1a1aa; --muted-2:#71717a; --green:#22c55e;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--black);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
code{font-family:'SF Mono',ui-monospace,'Cascadia Code',Menlo,Consolas,monospace;font-size:.9em}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* NAV */
nav{position:sticky;top:0;z-index:100;background:rgba(14,14,15,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:22px;letter-spacing:-.02em;color:var(--text)}
.brand span{color:var(--red)}
.brand-bot{width:26px;height:26px;color:var(--red)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--muted);font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-platform{border:1px solid var(--red-dim);color:var(--red)!important;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600;transition:all .2s}
.nav-platform:hover{background:var(--red);color:#fff!important}
.nav-cta{background:var(--red);color:#fff!important;padding:9px 18px;border-radius:8px;font-size:14px;font-weight:600;transition:background .2s}
.nav-cta:hover{background:var(--red-2)}
.nav-toggle{display:none;background:none;border:0;color:var(--text);font-size:24px;cursor:pointer}

/* BUTTONS */
.btn-primary{background:var(--red);color:#fff;padding:14px 30px;border-radius:10px;font-weight:600;font-size:16px;display:inline-block;transition:background .2s,transform .1s}
.btn-primary:hover{background:var(--red-2);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line);color:var(--text);padding:14px 30px;border-radius:10px;font-weight:600;font-size:16px;display:inline-block;transition:border-color .2s,background .2s}
.btn-ghost:hover{border-color:var(--red);background:rgba(220,38,38,.06)}

/* HERO — centered, head-on */
.hero{padding:80px 0 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-160px;left:50%;transform:translateX(-50%);width:1000px;height:600px;background:radial-gradient(ellipse at center,rgba(220,38,38,.18),transparent 70%);pointer-events:none}
.hero-inner{display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;z-index:1}
.hero-pill{display:inline-flex;align-items:center;gap:9px;margin-bottom:36px;background:rgba(220,38,38,.1);border:1px solid var(--red-dim);color:var(--text);font-size:13px;font-weight:600;padding:8px 16px;border-radius:100px;transition:all .2s}
.hero-pill:hover{background:rgba(220,38,38,.18);border-color:var(--red)}
.hero-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--red);box-shadow:0 0 0 3px rgba(220,38,38,.25)}
.hero-pill .arr{color:var(--red);font-weight:700}

/* the robot, front and center */
.hero-bot{width:120px;height:120px;color:var(--red);margin-bottom:28px;filter:drop-shadow(0 0 24px rgba(220,38,38,.35))}
.hero-bot svg{width:100%;height:100%}
.eye{animation:blink 5s infinite}
@keyframes blink{0%,92%,100%{opacity:1}95%{opacity:.15}}

.hero h1{font-size:clamp(46px,8vw,88px);font-weight:800;line-height:1;letter-spacing:-.035em;margin-bottom:24px}
.hero h1 em{color:var(--red);font-style:normal}
.hero .lead{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:600px;margin-bottom:38px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:72px}

/* SIGNATURE — horizontal flow rail, full lateral length */
.flow-rail{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--panel),var(--black));padding:30px 0}
.flow-track{display:flex;align-items:stretch;gap:14px;justify-content:space-between}
.flow-step{flex:1;background:var(--panel-2);border:1px solid var(--line);border-radius:14px;padding:18px 20px;display:flex;flex-direction:column;gap:10px;min-width:0}
.flow-step p{font-size:14px;color:var(--text);margin:0}
.flow-tag{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:4px 10px;border-radius:6px;align-self:flex-start}
.step-you .flow-tag{color:var(--muted);background:var(--panel)}
.step-arnie{border-color:var(--red-dim)}
.step-arnie .flow-tag{color:var(--red);background:rgba(220,38,38,.12)}
.step-approve .flow-tag{color:var(--muted);background:var(--panel)}
.step-run{border-color:rgba(34,197,94,.3)}
.step-run .flow-tag{color:var(--green);background:rgba(34,197,94,.12)}
.flow-step code{color:var(--red);background:rgba(220,38,38,.08);padding:2px 6px;border-radius:5px}
.flow-conn{display:flex;align-items:center;color:var(--red);font-size:22px;font-weight:700;flex-shrink:0}
.approve-row{display:flex;gap:8px}
.btn-approve{font-size:12px;font-weight:600;color:#fff;background:var(--green);padding:6px 16px;border-radius:6px}
.btn-reject{font-size:12px;font-weight:600;color:var(--muted);border:1px solid var(--line);padding:6px 16px;border-radius:6px}
.flow-done{color:var(--green);font-weight:600}

/* SECTIONS */
section.block{padding:88px 0}
.section-head{max-width:680px;margin-bottom:52px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head .eyebrow{color:var(--red);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px}
.section-head h2{font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.1;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:18px}
.alt-bg{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* WHAT GRID */
.what-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.what-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px;transition:border-color .2s,transform .2s;text-align:center}
.what-card:hover{border-color:var(--red-dim);transform:translateY(-3px)}
.what-icon{width:48px;height:48px;border-radius:13px;background:rgba(220,38,38,.12);display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.what-icon svg{width:24px;height:24px;stroke:var(--red)}
.what-card h3{font-size:19px;font-weight:700;margin-bottom:9px}
.what-card p{color:var(--muted);font-size:15px}

/* PIPELINE — horizontal rail */
.pipeline-rail{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.prail-step{background:var(--panel-2);border:1px solid var(--line);border-radius:14px;padding:24px 20px;text-align:center}
.p-num{display:inline-flex;width:38px;height:38px;border-radius:10px;background:var(--red);color:#fff;font-weight:700;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px}
.prail-step h4{font-size:16px;font-weight:700;margin-bottom:6px}
.prail-step p{color:var(--muted);font-size:14px}

/* CTA */
.cta-band{text-align:center;padding:100px 0}
.cta-bot{width:72px;height:72px;color:var(--red);margin:0 auto 26px;filter:drop-shadow(0 0 18px rgba(220,38,38,.3))}
.cta-bot svg{width:100%;height:100%}
.cta-band h2{font-size:clamp(28px,4.5vw,48px);font-weight:800;letter-spacing:-.02em;margin-bottom:16px;max-width:720px;margin-left:auto;margin-right:auto}
.cta-band p{color:var(--muted);font-size:18px;margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto}

/* FOOTER */
footer{border-top:1px solid var(--line);padding:56px 0 36px;background:var(--panel)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:44px}
.footer-brand .brand{font-size:20px;margin-bottom:12px}
.footer-brand p{color:var(--muted);font-size:14px;max-width:300px}
.footer-col h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-2);margin-bottom:16px;font-weight:600}
.footer-col a{display:block;color:var(--muted);font-size:14px;margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{color:var(--muted-2);font-size:13px}

/* RESPONSIVE */
@media(max-width:920px){
  .flow-track{flex-direction:column}
  .flow-conn{transform:rotate(90deg);align-self:center}
  .pipeline-rail{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:860px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .what-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .pipeline-rail{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){.eye{animation:none}}

/* ============================================
   SUBPAGES — page hero, feature rows, demos
   ============================================ */
.page-hero{padding:72px 0 48px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);width:900px;height:500px;background:radial-gradient(ellipse at center,rgba(220,38,38,.13),transparent 70%);pointer-events:none}
.page-hero .eyebrow{color:var(--red);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;position:relative}
.page-hero h1{font-size:clamp(34px,5.5vw,58px);font-weight:800;line-height:1.05;letter-spacing:-.03em;margin-bottom:20px;position:relative}
.page-hero .lead{font-size:clamp(17px,2.2vw,20px);color:var(--muted);max-width:640px;position:relative}

/* FEATURE ROWS — alternating, gives horizontal rhythm */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:48px 0;border-bottom:1px solid var(--line)}
.feature-row:last-child{border-bottom:0}
.feature-row.reverse .feature-text{order:2}
.f-kicker{color:var(--red);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.feature-text h2{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em;line-height:1.15;margin-bottom:16px}
.feature-text p{color:var(--muted);font-size:16px;margin-bottom:20px}
.f-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.f-list li{position:relative;padding-left:26px;color:var(--text);font-size:15px}
.f-list li::before{content:"";position:absolute;left:0;top:8px;width:14px;height:14px;border-radius:4px;background:rgba(220,38,38,.15);box-shadow:inset 0 0 0 2px var(--red)}

/* DEMO PANELS */
.feature-panel{background:linear-gradient(160deg,var(--panel),var(--black));border:1px solid var(--line);border-radius:18px;padding:28px;min-height:180px;display:flex;flex-direction:column;justify-content:center}
.feature-panel code{color:var(--red);background:rgba(220,38,38,.08);padding:2px 7px;border-radius:5px;font-size:13px}

.chat-demo{display:flex;flex-direction:column;gap:12px}
.chat-you{align-self:flex-end;background:var(--panel-2);border:1px solid var(--line);border-radius:12px 12px 4px 12px;padding:12px 16px;font-size:14px;max-width:85%}
.chat-arnie{align-self:flex-start;background:rgba(220,38,38,.08);border:1px solid var(--red-dim);border-radius:12px 12px 12px 4px;padding:12px 16px;font-size:14px;max-width:90%}
.ca-tag{display:block;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--red);margin-bottom:5px}

.gate-demo{text-align:center;display:flex;flex-direction:column;gap:14px;align-items:center}
.gate-file code{font-size:15px}
.gate-meta{color:var(--muted-2);font-size:13px}
.gate-btns{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.btn-edit{font-size:12px;font-weight:600;color:var(--text);border:1px solid var(--line);padding:6px 16px;border-radius:6px}

.exec-demo{display:flex;flex-direction:column;gap:10px}
.exec-step{background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:11px 16px;font-size:14px;position:relative;padding-left:38px}
.exec-step.done::before{content:"\2713";position:absolute;left:14px;color:var(--green);font-weight:700}
.exec-result{color:var(--green);font-weight:600;font-size:14px;padding:6px 4px}

.prov-demo{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.prov-pill{background:var(--panel-2);border:1px solid var(--line);border-radius:100px;padding:9px 20px;font-size:14px;font-weight:600;color:var(--muted)}
.prov-pill.active{background:rgba(220,38,38,.12);border-color:var(--red);color:var(--red)}

.audit-demo{display:flex;flex-direction:column;gap:11px}
.audit-line{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text)}
.al-dot{width:9px;height:9px;border-radius:50%;background:var(--muted-2);flex-shrink:0}
.al-dot.green{background:var(--green)}

@media(max-width:860px){
  .feature-row{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .feature-row.reverse .feature-text{order:0}
}

/* ============================================
   HOW IT WORKS — deep steps, loop note
   ============================================ */
.steps-deep{display:flex;flex-direction:column;gap:18px;max-width:860px}
.deep-step{display:grid;grid-template-columns:auto 1fr;gap:28px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:32px;transition:border-color .2s}
.deep-step:hover{border-color:var(--red-dim)}
.deep-step.gate{border-color:var(--red-dim);background:linear-gradient(160deg,rgba(220,38,38,.06),var(--panel))}
.ds-num{font-size:34px;font-weight:800;color:var(--red);letter-spacing:-.03em;line-height:1}
.ds-body h3{font-size:21px;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.ds-body p{color:var(--muted);font-size:16px;margin-bottom:16px}
.ds-tag{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);background:var(--panel-2);border:1px solid var(--line);padding:6px 14px;border-radius:8px}
.ds-tag.red{color:var(--red);background:rgba(220,38,38,.1);border-color:var(--red-dim)}
.ds-tag.green{color:var(--green);background:rgba(34,197,94,.1);border-color:rgba(34,197,94,.3)}

.loop-note{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;margin-top:40px;background:linear-gradient(160deg,var(--panel),var(--black));border:1px solid var(--red-dim);border-radius:20px;padding:36px;max-width:860px}
.loop-bot{width:72px;height:72px;color:var(--red);filter:drop-shadow(0 0 16px rgba(220,38,38,.3))}
.loop-bot svg{width:100%;height:100%}
.loop-note h3{font-size:22px;font-weight:800;margin-bottom:10px}
.loop-note p{color:var(--muted);font-size:16px;margin-bottom:14px}
.loop-link{color:var(--red);font-weight:600;font-size:15px;transition:color .2s}
.loop-link:hover{color:var(--red-2)}

@media(max-width:680px){
  .deep-step{grid-template-columns:1fr;gap:14px;padding:26px}
  .loop-note{grid-template-columns:1fr;text-align:center;gap:18px}
  .loop-bot{margin:0 auto}
}

/* ============================================
   HOW IT WORKS v2 — zig-zag + gate centerpiece
   ============================================ */
/* app pill in nav */
.nav-app{border:1px solid var(--red);color:var(--red)!important;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:600;transition:all .2s}
.nav-app:hover{background:var(--red);color:#fff!important}

.zigzag-section{position:relative}
.zig{position:relative;max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:30px}
/* the spine */
.zig::before{content:"";position:absolute;left:50%;top:20px;bottom:20px;width:2px;background:linear-gradient(180deg,var(--red-dim),var(--line));transform:translateX(-50%);z-index:0}

.zig-step{position:relative;z-index:1;display:flex;width:100%}
.zig-step.left{justify-content:flex-start}
.zig-step.right{justify-content:flex-end}
.zig-card{width:calc(50% - 36px);background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;transition:border-color .2s,transform .2s;position:relative}
.zig-card:hover{border-color:var(--red-dim);transform:translateY(-2px)}
/* node dot on the spine */
.zig-step.left .zig-card::after,.zig-step.right .zig-card::after{content:"";position:absolute;top:32px;width:13px;height:13px;border-radius:50%;background:var(--red);box-shadow:0 0 0 4px var(--black),0 0 0 6px var(--red-dim)}
.zig-step.left .zig-card::after{right:-42px}
.zig-step.right .zig-card::after{left:-42px}
.zig-num{font-size:26px;font-weight:800;color:var(--red);letter-spacing:-.03em;margin-bottom:10px;line-height:1}
.zig-num.green{color:var(--green)}
.zig-card h3{font-size:19px;font-weight:700;margin-bottom:9px;letter-spacing:-.01em}
.zig-card p{color:var(--muted);font-size:15px;margin-bottom:14px}
.zig-tag{display:inline-block;font-size:11px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);background:var(--panel-2);border:1px solid var(--line);padding:5px 12px;border-radius:7px}
.zig-tag.green{color:var(--green);background:rgba(34,197,94,.1);border-color:rgba(34,197,94,.3)}
.result-card{border-color:rgba(34,197,94,.3)}
.result-card::after{background:var(--green)!important;box-shadow:0 0 0 4px var(--black),0 0 0 6px rgba(34,197,94,.4)!important}

/* THE GATE — full-width centerpiece that breaks the zig-zag */
.gate-block{position:relative;z-index:2;margin:6px 0}
.gate-inner{background:linear-gradient(160deg,rgba(220,38,38,.1),var(--panel));border:1.5px solid var(--red);border-radius:20px;padding:40px;text-align:center;box-shadow:0 0 50px rgba(220,38,38,.12)}
.gate-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--red);background:rgba(220,38,38,.15);border:1px solid var(--red-dim);padding:7px 16px;border-radius:100px;margin-bottom:18px}
.gate-inner h3{font-size:clamp(22px,3.2vw,30px);font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.gate-inner p{color:var(--muted);font-size:16px;max-width:620px;margin:0 auto 24px}
.gate-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.gate-actions .btn-approve{font-size:14px;padding:10px 24px}
.gate-actions .btn-edit{font-size:14px;padding:10px 24px}
.gate-actions .btn-reject{font-size:14px;padding:10px 24px}

.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

@media(max-width:760px){
  .zig::before{left:22px}
  .zig-step.left,.zig-step.right{justify-content:flex-start}
  .zig-card{width:100%;margin-left:44px}
  .zig-step.left .zig-card::after,.zig-step.right .zig-card::after{left:-42px;right:auto}
  .gate-inner{padding:28px}
}