:root{
  --void:#0A0C10;
  --panel:#12151B;
  --panel-2:#171B23;
  --hair:rgba(255,255,255,0.08);
  --hair-strong:rgba(255,255,255,0.16);
  --text:#EDEFF4;
  --muted:#868FA3;
  --muted-2:#5C6274;
  /* Color roles: --pay = payments/budget (free, open source, x402).
     --id = identity (paid add-on). --priv = privacy (paid add-on). */
  --pay:#E8A059;
  --id:#5B9EF5;
  --priv:#B18CF5;
  --pay-dim:rgba(232,160,89,0.12);
  --id-dim:rgba(91,158,245,0.12);
  --priv-dim:rgba(177,140,245,0.12);
  --merge:#F5F7FA;
  --green:#7FD897;
  --nav-h:64px;
}
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }
body{ background:var(--void); color:var(--text); font-family:'Inter',sans-serif; -webkit-font-smoothing:antialiased; overflow-x:hidden; }
::selection{ background:var(--id); color:var(--void); }
.mono{ font-family:'IBM Plex Mono',monospace; }
.wrap{ max-width:1120px; margin:0 auto; padding:0 32px; }
section{ padding:100px 0; border-bottom:1px solid var(--hair); scroll-margin-top:var(--nav-h); }
section:last-of-type{ border-bottom:none; }
h1,h2,h3{ font-family:'Space Grotesk',sans-serif; font-weight:600; letter-spacing:-0.01em; }
a{ color:inherit; }
img,svg{ max-width:100%; }
a:focus-visible, button:focus-visible{ outline:2px solid var(--id); outline-offset:3px; border-radius:3px; }

.eyebrow{ font-family:'IBM Plex Mono',monospace; font-size:12px; letter-spacing:0.14em; text-transform:uppercase; color:var(--muted); display:flex; align-items:center; gap:10px; margin-bottom:22px; }
.eyebrow::before{ content:""; width:18px; height:1px; background:var(--muted-2); flex-shrink:0; }

/* NAV */
nav{ position:sticky; top:0; z-index:50; background:rgba(10,12,16,0.85); backdrop-filter:blur(10px); border-bottom:1px solid var(--hair); }
nav .wrap{ display:flex; align-items:center; justify-content:space-between; padding:18px 32px; gap:16px; min-height:var(--nav-h); }
.navmark{ display:flex; align-items:center; gap:10px; flex-shrink:0; text-decoration:none; }
.navmark span{ font-family:'Space Grotesk'; font-weight:600; font-size:15px; color:var(--text); }
.navlinks{ display:flex; align-items:center; gap:28px; font-family:'IBM Plex Mono'; font-size:12px; color:var(--muted); }
.navlinks a{ text-decoration:none; white-space:nowrap; }
.navlinks a:hover{ color:var(--text); }
.navcta{ background:var(--merge); color:var(--void); padding:9px 16px; border-radius:6px; font-weight:600; font-family:'Inter'; text-decoration:none; white-space:nowrap; }

.navtoggle{ display:none; flex-direction:column; justify-content:center; gap:5px; width:36px; height:36px; background:transparent; border:1px solid var(--hair-strong); border-radius:6px; cursor:pointer; flex-shrink:0; }
.navtoggle span{ display:block; width:16px; height:1.5px; background:var(--text); margin:0 auto; transition:transform .2s ease, opacity .2s ease; }
.navtoggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
.navtoggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.navtoggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

/* HERO */
.hero{ padding:110px 0 90px; }
.hero h1{ font-size:clamp(34px,5.6vw,60px); line-height:1.1; max-width:840px; margin-bottom:24px; }
.hero h1 .a-id{ color:var(--id); }
.hero h1 .a-priv{ color:var(--priv); }
.hero h1 .a-pay{ color:var(--pay); }
.hero p.lede{ font-size:18px; color:var(--muted); max-width:600px; line-height:1.6; margin-bottom:40px; }
.hero p.lede .a-id{ color:var(--id); }
.hero p.lede .a-priv{ color:var(--priv); }
.hero p.lede .a-pay{ color:var(--pay); }
.hero-ctas{ display:flex; gap:14px; align-items:center; margin-bottom:56px; flex-wrap:wrap; }
.btn{ font-family:'Inter'; font-weight:600; font-size:14px; padding:13px 22px; border-radius:6px; border:none; cursor:pointer; text-decoration:none; display:inline-block; }
.btn-primary{ background:var(--merge); color:var(--void); }
.btn-secondary{ background:transparent; color:var(--text); border:1px solid var(--hair-strong); }
.btn-secondary:hover{ border-color:var(--muted); }

.terminal{ background:var(--panel); border:1px solid var(--hair); border-radius:10px; max-width:660px; overflow:hidden; }
.terminal-bar{ display:flex; gap:6px; padding:12px 16px; border-bottom:1px solid var(--hair); }
.terminal-bar span{ width:9px; height:9px; border-radius:50%; background:var(--hair-strong); }
.terminal-body{ padding:20px 22px; font-family:'IBM Plex Mono'; font-size:13.5px; line-height:1.9; overflow-wrap:anywhere; overflow-x:auto; }
.terminal-body .prompt{ color:var(--muted-2); }
.terminal-body .cmd{ color:var(--text); }
.terminal-body .out{ color:var(--muted); }
.terminal-body .ok{ color:var(--green); }
.terminal-body .addon{ color:var(--muted-2); }
.terminal-body .pay-txt{ color:var(--pay); }
.terminal-body .id-txt{ color:var(--id); }
.terminal-body .priv-txt{ color:var(--priv); }
.terminal-body .comment{ color:var(--muted-2); }

/* rail divider */
.rail-divider{ height:2px; width:100%; background:linear-gradient(90deg, var(--pay), var(--id), var(--priv)); opacity:0.35; }

/* SUBPAGE HERO (lighter than homepage hero, used by /enterprise, /commerce, /partners, /design-partners) */
.crumb{ font-family:'IBM Plex Mono'; font-size:12px; color:var(--muted-2); margin-bottom:18px; }
.crumb a{ color:var(--muted); text-decoration:none; }
.crumb a:hover{ color:var(--text); }
.page-hero{ padding:64px 0 56px; }
.page-hero h1{ font-size:clamp(30px,4.8vw,46px); line-height:1.15; max-width:760px; margin-bottom:20px; }
.page-hero p.lede{ font-size:17px; color:var(--muted); max-width:640px; line-height:1.6; margin-bottom:32px; }

/* LEGAL (long-form prose, used by /terms, /privacy) */
.legal{ max-width:720px; padding:0 0 100px; }
.legal .updated{ font-family:'IBM Plex Mono'; font-size:12px; color:var(--muted-2); margin-bottom:48px; }
.legal h2{ font-size:22px; margin:48px 0 16px; }
.legal h2:first-child{ margin-top:0; }
.legal h3{ font-size:16px; margin:28px 0 10px; color:var(--text); }
.legal p{ font-size:15px; color:var(--muted); line-height:1.75; margin-bottom:16px; }
.legal ul, .legal ol{ margin:0 0 16px 22px; }
.legal li{ font-size:15px; color:var(--muted); line-height:1.75; margin-bottom:8px; }
.legal a{ color:var(--id); }
.legal strong{ color:var(--text); font-weight:600; }

/* CALLOUT (boxed aside, colored left rule) */
.callout{ background:var(--panel); border:1px solid var(--hair); border-left:3px solid var(--id); border-radius:8px; padding:22px 26px; margin:28px 0; }
.callout.c-pay{ border-left-color:var(--pay); }
.callout.c-priv{ border-left-color:var(--priv); }
.callout .cap{ font-family:'IBM Plex Mono'; font-size:11px; text-transform:uppercase; letter-spacing:0.08em; color:var(--muted-2); margin-bottom:8px; }
.callout p{ font-size:14px; color:var(--muted); line-height:1.65; }
.callout p:last-child{ margin-bottom:0; }

/* GAP / WHY */
.sec-head{ display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:52px; gap:24px; flex-wrap:wrap; }
.sec-head h2{ font-size:32px; max-width:560px; }
.sec-head p{ color:var(--muted); font-size:14px; max-width:340px; line-height:1.6; }

.gap-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--hair); border:1px solid var(--hair); }
.gap-cell{ background:var(--panel); padding:32px 28px; }
.gap-cell .tag{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--muted-2); margin-bottom:14px; display:block; letter-spacing:0.04em; }
.gap-cell h3{ font-size:18px; margin-bottom:12px; font-weight:600; }
.gap-cell p{ font-size:14px; color:var(--muted); line-height:1.6; }

/* STEPS */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--hair); border:1px solid var(--hair); }
.step{ background:var(--panel); padding:36px 28px; position:relative; }
.step .num{ font-family:'IBM Plex Mono'; font-size:12px; color:var(--id); margin-bottom:20px; }
.step h3{ font-size:19px; margin-bottom:10px; }
.step p{ font-size:14px; color:var(--muted); line-height:1.6; margin-bottom:16px; }
.step p .badge-addon{ color:var(--priv); }
.step .snippet{ font-family:'IBM Plex Mono'; font-size:12px; background:var(--void); border:1px solid var(--hair); padding:10px 12px; border-radius:5px; color:var(--muted); overflow-x:auto; white-space:nowrap; }

/* THREE PARTS */
.parts-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--hair); border:1px solid var(--hair); }
.part{ background:var(--panel); padding:32px 28px; }
.part.wide{ grid-column:1 / -1; }
.part .swatch{ width:28px; height:4px; border-radius:2px; margin-bottom:20px; }
.part .cap{ font-family:'IBM Plex Mono'; font-size:11px; text-transform:uppercase; letter-spacing:0.08em; color:var(--muted-2); margin-bottom:8px; }
.part h3{ font-size:19px; margin-bottom:12px; }
.part p{ font-size:14px; color:var(--muted); line-height:1.65; margin-bottom:14px; }
.part ul{ list-style:none; }
.part li{ font-size:13px; color:var(--muted); line-height:1.7; padding-left:16px; position:relative; }
.part li::before{ content:"—"; position:absolute; left:0; color:var(--muted-2); }

/* CONTROLS */
.controls-grid{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--hair); border:1px solid var(--hair); }
.controls-col{ background:var(--panel); padding:36px; min-width:0; }
.controls-col .cap{ font-family:'IBM Plex Mono'; font-size:11px; text-transform:uppercase; letter-spacing:0.08em; color:var(--muted); margin-bottom:6px; }
.controls-col h3{ font-size:20px; margin-bottom:24px; }

.mock-ui{ background:var(--panel-2); border:1px solid var(--hair); border-radius:10px; padding:24px; }
.mock-row{ display:flex; justify-content:space-between; align-items:center; padding:14px 0; border-top:1px solid var(--hair); gap:16px; }
.mock-row:first-child{ border-top:none; }
.mock-row .label{ font-size:14px; }
.mock-row .label small{ display:block; color:var(--muted-2); font-size:12px; margin-top:2px; font-family:'IBM Plex Mono'; }
.switch{ width:36px; height:20px; border-radius:10px; background:var(--id); position:relative; flex-shrink:0; }
.switch::after{ content:""; position:absolute; top:2px; right:2px; width:16px; height:16px; border-radius:50%; background:var(--void); }
.switch.off{ background:var(--hair-strong); }
.switch.off::after{ right:auto; left:2px; }
.slider-track{ height:4px; background:var(--hair-strong); border-radius:2px; position:relative; margin-top:10px; }
.slider-fill{ position:absolute; left:0; top:0; height:100%; width:22%; background:var(--pay); border-radius:2px; }
.slider-fill::after{ content:""; position:absolute; right:-6px; top:-4px; width:12px; height:12px; border-radius:50%; background:var(--merge); }

.codeblock{ background:var(--void); border:1px solid var(--hair); border-radius:10px; padding:22px 24px; font-family:'IBM Plex Mono'; font-size:12.5px; line-height:1.85; overflow-x:auto; }
.codeblock .k{ color:var(--muted); }
.codeblock .v{ color:var(--text); }
.codeblock .c-pay{ color:var(--pay); }
.codeblock .c-id{ color:var(--id); }
.codeblock .c-priv{ color:var(--priv); }
.codeblock .c3{ color:var(--muted-2); }

/* DASHBOARD PREVIEW + generic boxed tables (reused by content pages) */
.dash-mock{ background:var(--panel-2); border:1px solid var(--hair); border-radius:10px; overflow:hidden; }
.dash-head{ display:flex; justify-content:space-between; align-items:center; padding:16px 20px; border-bottom:1px solid var(--hair); }
.dash-head .title{ font-family:'Space Grotesk'; font-size:14px; font-weight:600; }
.dash-head .title span{ color:var(--muted); font-weight:400; }
.dash-badge{ font-family:'IBM Plex Mono'; font-size:11px; padding:4px 10px; border-radius:20px; background:rgba(127,216,151,0.14); color:var(--green); }
.dash-table{ width:100%; border-collapse:collapse; font-size:12.5px; }
.dash-table th{ text-align:left; font-family:'IBM Plex Mono'; font-weight:500; font-size:11px; color:var(--muted-2); padding:10px 20px; border-bottom:1px solid var(--hair); text-transform:uppercase; letter-spacing:0.04em; }
.dash-table td{ padding:12px 20px; border-bottom:1px solid var(--hair); color:var(--muted); }
.dash-table tr:last-child td{ border-bottom:none; }
.dash-table td.agent{ color:var(--text); font-weight:500; }
.dash-pill{ font-family:'IBM Plex Mono'; font-size:11px; padding:2px 9px; border-radius:20px; }
.dash-pill.ok{ background:rgba(127,216,151,0.14); color:var(--green); }
.dash-pill.warn{ background:var(--priv-dim); color:var(--priv); }
.dash-mono{ font-family:'IBM Plex Mono'; font-size:11.5px; }

/* TRUST */
.trust-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--hair); border:1px solid var(--hair); }
.trust-cell{ background:var(--panel); padding:28px 22px; }
.trust-cell .dot{ width:8px; height:8px; border-radius:50%; background:var(--green); margin-bottom:16px; }
.trust-cell h4{ font-family:'Space Grotesk'; font-size:15px; font-weight:600; margin-bottom:8px; }
.trust-cell p{ font-size:13px; color:var(--muted); line-height:1.6; }
.trust-cell code{ font-family:'IBM Plex Mono'; font-size:12px; color:var(--text); background:var(--void); padding:1px 5px; border-radius:3px; }

/* FINAL CTA */
.final{ text-align:center; padding:120px 0; }
.final h2{ font-size:clamp(28px,4.4vw,46px); max-width:640px; margin:0 auto 20px; }
.final p{ color:var(--muted); font-size:16px; margin-bottom:40px; }
.final .terminal{ margin:0 auto; text-align:left; }
.final .fallback{ font-size:13px; color:var(--muted-2); margin-top:18px; }
.final .fallback code{ font-family:'IBM Plex Mono'; background:var(--panel); border:1px solid var(--hair); padding:2px 7px; border-radius:4px; color:var(--muted); }
.final .btn{ font-size:15px; padding:15px 28px; }

footer{ padding:44px 0; }
footer .wrap{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px; }
footer p{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--muted-2); letter-spacing:0.02em; }
footer .foot-links{ display:flex; gap:20px; flex-wrap:wrap; }
footer .foot-links a{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--muted-2); text-decoration:none; letter-spacing:0.02em; }
footer .foot-links a:hover{ color:var(--muted); }

/* ===== RESPONSIVE ===== */
@media (max-width:960px){
  .wrap{ padding:0 24px; }
  section{ padding:76px 0; }
  .hero{ padding:64px 0 64px; }
  .final{ padding:88px 0; }
}

@media (max-width:860px){
  .gap-grid, .steps, .controls-grid, .parts-grid{ grid-template-columns:1fr; }
  .dash-table{ font-size:11.5px; }
  .dash-table th, .dash-table td{ padding:10px 14px; }
}

@media (max-width:760px){
  .navlinks{
    position:absolute; top:100%; left:0; right:0;
    flex-direction:column; align-items:stretch; gap:0;
    background:var(--panel); border-bottom:1px solid var(--hair);
    max-height:0; overflow:hidden; opacity:0;
    transition:max-height .25s ease, opacity .2s ease;
  }
  .navlinks.open{ max-height:420px; opacity:1; overflow-y:auto; }
  .navlinks a, .navlinks .navcta{ padding:16px 24px; border-top:1px solid var(--hair); font-size:13px; }
  .navlinks a:first-child{ border-top:none; }
  .navlinks .navcta{ text-align:center; margin:12px 24px 16px; border-radius:6px; border-top:none; }
  .navtoggle{ display:flex; }
  nav{ position:sticky; }

  .trust-grid{ grid-template-columns:1fr 1fr; }
}

@media (max-width:560px){
  .wrap{ padding:0 20px; }
  section{ padding:60px 0; }
  .hero{ padding:48px 0 48px; }
  .final{ padding:72px 0; }
  .sec-head{ margin-bottom:36px; }
  .sec-head h2{ font-size:26px; }

  .hero-ctas .btn{ flex:1 1 100%; text-align:center; }
  .terminal-body{ font-size:12.5px; padding:16px 16px; line-height:1.75; }
  .step .snippet{ white-space:normal; word-break:break-word; }

  .gap-cell, .step, .part{ padding:26px 22px; }
  .controls-col{ padding:26px 22px; }
  .codeblock{ font-size:11.5px; padding:18px; }

  .trust-grid{ grid-template-columns:1fr; }
  .dash-table{ display:block; overflow-x:auto; white-space:nowrap; }

  footer .wrap{ flex-direction:column; align-items:flex-start; }
}