/* Shared styles for all /learn/<slug>.html pillar pages
   Aesthetic: Minimal Pictogram (PG-picked 2026-05-25)
   White primary · Purple #7C3AED as ink only · Inter display + body · JetBrains Mono labels */

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --purple:#7C3AED;--purple-dark:#5B21B6;--purple-deeper:#4C1D95;--purple-darkest:#2E1065;
  --purple-light:#EDE9FE;--purple-tint:#F3F0FF;--purple-subtle:#F9F8FF;--purple-pale:#F3F0FF;--purple-wash:#FAF7FF;--purple-mid:#A78BFA;
  --text-primary:#1a1a2e;--ink:#1a1a2e;--ink-2:#3B2456;
  --text-secondary:#4B5563;--text-muted:#9CA3AF;
  --border:#E5E7EB;--rule:#ECE8F5;--rule-strong:#D9D2EC;
  --font-display:'Fraunces',Georgia,serif;
  --font-sans:'Inter',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',monospace;
}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);color:var(--ink);background:#fff;overflow-x:hidden;-webkit-font-smoothing:antialiased}

/* ========= HEADER + MOBILE NAV ========= */
.skip-link{position:absolute;top:-40px;left:8px;background:var(--purple);color:#fff;padding:8px 16px;border-radius:8px;text-decoration:none;font-weight:600;z-index:9999;font-size:14px}
.skip-link:focus{top:8px}
.header{position:fixed;top:0;left:0;right:0;z-index:1000;padding:18px 48px;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(124,58,237,.08)}
.header-logo{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:28px;font-weight:700;font-style:italic;color:var(--purple);letter-spacing:-.5px;text-decoration:none}
.header-logo-mark{width:26px;height:28px;flex-shrink:0;color:inherit}
.header-nav{display:flex;align-items:center;gap:36px}
.header-nav a{font-size:15px;font-weight:500;color:var(--ink);text-decoration:none;transition:color .2s ease-out}
.header-nav a:hover,.header-nav a[aria-current="page"]{color:var(--purple)}
.header-cta{padding:12px 28px;background:var(--purple);color:#fff !important;border-radius:8px;font-size:14px;font-weight:600;text-decoration:none;transition:background .2s ease-out}
.header-cta:hover{background:var(--purple-dark)}
.header-burger{display:none;background:transparent;border:0;color:var(--ink);cursor:pointer;padding:8px;border-radius:6px}
.header-burger svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:2}
.mobile-nav{position:fixed;inset:0;background:var(--purple-deeper);z-index:1100;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;opacity:0;pointer-events:none;transition:opacity .3s ease-out}
.mobile-nav.open{opacity:1;pointer-events:auto}
.mobile-nav a{font-family:var(--font-display);font-size:32px;font-weight:700;font-style:italic;color:#fff;text-decoration:none}
.mobile-nav a.mobile-nav-cta{font-family:var(--font-sans);font-size:15px;font-style:normal;font-weight:600;background:var(--purple);padding:14px 36px;border-radius:10px;margin-top:12px}
.mobile-nav-close{position:absolute;top:18px;right:18px;background:transparent;border:0;color:#fff;cursor:pointer;padding:8px}
.mobile-nav-close svg{width:28px;height:28px;stroke:#fff;fill:none;stroke-width:2}

/* ========= BREADCRUMB ========= */
.crumb{padding:110px 36px 0;max-width:920px;margin:0 auto;font-family:var(--font-mono);font-size:11px;color:var(--ink-2);letter-spacing:1.5px;text-transform:uppercase;font-weight:600}
.crumb a{color:var(--purple);text-decoration:none}
.crumb a:hover{color:var(--purple-dark)}
.crumb-sep{margin:0 8px;color:var(--purple-mid)}

/* ========= HERO ========= */
.p-hero{padding:48px 36px 56px;max-width:920px;margin:0 auto}
.p-eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:2.5px;color:var(--purple);text-transform:uppercase;font-weight:700;margin-bottom:18px}
.p-eyebrow::before{content:'';width:24px;height:1px;background:var(--purple)}
.p-title{font-family:var(--font-sans);font-weight:800;font-size:clamp(40px,5.5vw,64px);line-height:1.02;letter-spacing:-2.5px;color:var(--ink);margin-bottom:18px}
.p-title em{color:var(--purple);font-style:normal;font-weight:800}
.p-deck{font-size:20px;line-height:1.55;color:var(--ink-2);max-width:680px;font-weight:400}

/* ========= DIAGRAM HERO ========= */
.p-diagram{background:var(--purple-pale);border-radius:24px;padding:56px 32px;margin:0 36px 64px;max-width:1080px;margin-left:auto;margin-right:auto;position:relative;overflow:hidden}
.p-diagram::before{content:'';position:absolute;top:-40%;right:-10%;width:300px;height:300px;background:radial-gradient(circle,rgba(167,139,250,.3),transparent 70%);filter:blur(40px);pointer-events:none}
.p-diagram::after{content:'';position:absolute;bottom:-40%;left:-10%;width:280px;height:280px;background:radial-gradient(circle,rgba(124,58,237,.15),transparent 70%);filter:blur(40px);pointer-events:none}
.p-diagram-inner{position:relative;z-index:2}
.p-diagram-label{font-family:var(--font-mono);font-size:10px;letter-spacing:2px;color:var(--purple);text-transform:uppercase;font-weight:700;margin-bottom:20px;text-align:center}

/* 5-step pictogram row (reusable across pillars) */
.p-row{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;align-items:start;margin-bottom:24px}
.p-step{display:flex;flex-direction:column;align-items:center;text-align:center;opacity:0;transform:translateY(20px);transition:none}
.p-step.in{animation:p-fadeup .7s cubic-bezier(.2,.8,.2,1) forwards}
.p-step:nth-child(1).in{animation-delay:.1s}
.p-step:nth-child(2).in{animation-delay:.25s}
.p-step:nth-child(3).in{animation-delay:.4s}
.p-step:nth-child(4).in{animation-delay:.55s}
.p-step:nth-child(5).in{animation-delay:.7s}
.p-step:nth-child(6).in{animation-delay:.85s}
.p-step:nth-child(7).in{animation-delay:1.0s}
@keyframes p-fadeup{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.p-step-num{font-family:var(--font-sans);font-weight:800;font-size:13px;color:var(--purple-dark);background:#fff;padding:6px 12px;border-radius:100px;letter-spacing:1px;margin-bottom:18px;border:1.5px solid var(--purple)}
.p-pict{width:96px;height:96px;background:#fff;border-radius:20px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;box-shadow:0 6px 24px rgba(124,58,237,.08);border:1px solid var(--purple-light)}
.p-pict svg{width:44px;height:44px;stroke:var(--purple);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.p-step-name{font-family:var(--font-sans);font-weight:700;font-size:17px;color:var(--ink);margin-bottom:6px;letter-spacing:-.3px}
.p-step-desc{font-family:var(--font-sans);font-size:13px;color:var(--ink-2);line-height:1.5;max-width:160px}

/* Vertical comparison stacks (for cost pillar etc.) */
.p-stacks{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:20px 0}
.p-stack{background:#fff;border:1.5px solid var(--purple-light);border-radius:18px;padding:28px 22px;text-align:center;opacity:0;transform:translateY(20px)}
.p-stack.in{animation:p-fadeup .7s cubic-bezier(.2,.8,.2,1) forwards}
.p-stack:nth-child(2).in{animation-delay:.2s}
.p-stack:nth-child(3).in{animation-delay:.4s}
.p-stack.recommended{border-color:var(--purple);background:var(--purple-pale);position:relative}
.p-stack.recommended::before{content:'RECOMMENDED · SMB';position:absolute;top:-10px;left:50%;transform:translateX(-50%);background:var(--purple);color:#fff;font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;padding:4px 10px;border-radius:6px;font-weight:700;white-space:nowrap}
.p-stack-label{font-family:var(--font-mono);font-size:10px;letter-spacing:2px;color:var(--purple);text-transform:uppercase;font-weight:700;margin-bottom:8px}
.p-stack-price{font-family:var(--font-sans);font-weight:800;font-size:32px;color:var(--ink);letter-spacing:-1.5px;line-height:1;margin-bottom:6px}
.p-stack-unit{font-family:var(--font-mono);font-size:11px;color:var(--ink-2);letter-spacing:1px;text-transform:uppercase;margin-bottom:18px;font-weight:600}
.p-stack-desc{font-family:var(--font-sans);font-size:14px;color:var(--ink-2);line-height:1.55;margin-bottom:16px;text-align:left}
.p-stack-list{font-family:var(--font-sans);font-size:13px;color:var(--ink-2);line-height:1.6;text-align:left;list-style:none}
.p-stack-list li{padding-left:18px;position:relative;margin-bottom:6px}
.p-stack-list li::before{content:'·';position:absolute;left:6px;color:var(--purple);font-weight:700}

/* 3-pane comparison (for agent-vs-chatbot) */
.p-panes{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.p-pane{background:#fff;border:1.5px solid var(--purple-light);border-radius:18px;padding:24px 22px;opacity:0;transform:translateY(20px)}
.p-pane.in{animation:p-fadeup .7s cubic-bezier(.2,.8,.2,1) forwards}
.p-pane:nth-child(2).in{animation-delay:.2s}
.p-pane:nth-child(3).in{animation-delay:.4s}
.p-pane.is-agent{border-color:var(--purple);background:var(--purple-pale);position:relative}
.p-pane.is-agent::before{content:'IT IS THIS ONE';position:absolute;top:-10px;left:50%;transform:translateX(-50%);background:var(--purple);color:#fff;font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;padding:4px 10px;border-radius:6px;font-weight:700;white-space:nowrap}
.p-pane-icon{width:56px;height:56px;background:#fff;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;border:1px solid var(--purple-light)}
.p-pane-icon svg{width:28px;height:28px;stroke:var(--purple);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.p-pane-name{font-family:var(--font-sans);font-weight:800;font-size:22px;color:var(--ink);letter-spacing:-.5px;margin-bottom:6px}
.p-pane-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:1.5px;text-transform:uppercase;color:var(--purple);font-weight:700;margin-bottom:14px}
.p-pane-desc{font-family:var(--font-sans);font-size:14px;line-height:1.55;color:var(--ink-2);margin-bottom:14px}
.p-pane-yes,.p-pane-no{font-family:var(--font-sans);font-size:13px;line-height:1.55;color:var(--ink-2);margin-bottom:6px;padding-left:22px;position:relative}
.p-pane-yes::before{content:'✓';position:absolute;left:0;top:0;color:var(--purple);font-weight:700}
.p-pane-no::before{content:'×';position:absolute;left:0;top:-1px;color:var(--ink-2);font-weight:700;font-size:16px;opacity:.55}

/* Decision tree (for where-do-i-start) */
.p-tree{display:flex;flex-direction:column;gap:14px;max-width:740px;margin:0 auto}
.p-tree-q{background:#fff;border:1.5px solid var(--purple-mid);border-radius:14px;padding:22px 24px;opacity:0;transform:translateY(16px)}
.p-tree-q.in{animation:p-fadeup .6s cubic-bezier(.2,.8,.2,1) forwards}
.p-tree-q:nth-child(2).in{animation-delay:.2s}
.p-tree-q:nth-child(3).in{animation-delay:.4s}
.p-tree-q:nth-child(4).in{animation-delay:.6s}
.p-tree-q-num{font-family:var(--font-mono);font-size:10px;color:var(--purple);letter-spacing:1.5px;text-transform:uppercase;font-weight:700;margin-bottom:6px}
.p-tree-q-text{font-family:var(--font-sans);font-weight:700;font-size:18px;color:var(--ink);margin-bottom:10px;letter-spacing:-.3px}
.p-tree-q-routes{display:flex;gap:10px;flex-wrap:wrap}
.p-tree-q-route{padding:6px 12px;background:var(--purple-pale);color:var(--purple-dark);border-radius:100px;font-family:var(--font-mono);font-size:11px;letter-spacing:1px;font-weight:700;text-transform:uppercase}
.p-tree-arrow{text-align:center;font-size:22px;color:var(--purple);font-weight:300;opacity:.6}

/* ========= BODY ========= */
.p-body{padding:0 36px 80px;max-width:760px;margin:0 auto}
.p-body p{font-size:17.5px;line-height:1.75;color:var(--ink);margin-bottom:1.4em;font-weight:400}
.p-body h2{font-family:var(--font-sans);font-weight:800;font-size:clamp(26px,3.2vw,34px);color:var(--ink);line-height:1.15;letter-spacing:-1.2px;margin:2.4em 0 .8em}
.p-body h3{font-family:var(--font-sans);font-weight:700;font-size:22px;color:var(--ink);margin:2em 0 .6em;letter-spacing:-.4px}
.p-body ul,.p-body ol{padding-left:1.6em;margin-bottom:1.5em}
.p-body li{font-size:17px;line-height:1.7;color:var(--ink);margin-bottom:.5em}
.p-body strong{font-weight:700;color:var(--ink)}
.p-body em{font-style:italic}
.p-body code{font-family:var(--font-mono);font-size:.9em;background:var(--purple-pale);padding:2px 6px;border-radius:4px;color:var(--purple-dark)}

/* Pull-quote block */
.p-pull{margin:36px 0;padding:28px 32px;background:var(--purple-pale);border-left:3px solid var(--purple);border-radius:0 12px 12px 0;font-family:var(--font-display);font-style:italic;font-weight:400;font-size:21px;line-height:1.55;color:var(--ink-2)}
.p-pull strong{color:var(--purple);font-weight:600}

/* ========= SKU CARD ========= */
.p-sku{margin:64px 36px;padding:40px;background:#fff;border:2px solid var(--purple);border-radius:18px;max-width:880px;margin-left:auto;margin-right:auto;position:relative;box-shadow:0 8px 40px rgba(124,58,237,.08)}
.p-sku-tag{font-family:var(--font-mono);font-size:10px;color:var(--purple);letter-spacing:2px;text-transform:uppercase;font-weight:700;margin-bottom:12px}
.p-sku-name{font-family:var(--font-sans);font-weight:800;font-size:34px;color:var(--ink);line-height:1.05;letter-spacing:-1.2px;margin-bottom:6px}
.p-sku-price{font-family:var(--font-mono);font-size:13px;color:var(--purple);letter-spacing:1.5px;font-weight:700;margin-bottom:18px}
.p-sku-why{font-family:var(--font-sans);font-size:16.5px;line-height:1.6;color:var(--ink-2);margin-bottom:26px;max-width:620px}
.p-sku-buttons{display:flex;gap:12px;flex-wrap:wrap}
.p-sku-primary{padding:14px 26px;background:var(--purple);color:#fff;border-radius:10px;font-family:var(--font-sans);font-weight:700;font-size:14.5px;text-decoration:none;transition:transform .15s,background .15s;letter-spacing:-.2px}
.p-sku-primary:hover{background:var(--purple-dark);transform:translateY(-1px)}
.p-sku-ghost{padding:14px 26px;background:#fff;color:var(--purple);border:1.5px solid var(--purple-mid);border-radius:10px;font-family:var(--font-sans);font-weight:600;font-size:14.5px;text-decoration:none;transition:all .15s;letter-spacing:-.2px}
.p-sku-ghost:hover{background:var(--purple-pale)}

/* ========= RELATED PILLARS ========= */
.p-related{padding:64px 36px;background:var(--purple-subtle);border-top:1px solid var(--rule)}
.p-related-inner{max-width:1100px;margin:0 auto}
.p-related-eyebrow{font-family:var(--font-mono);font-size:11px;color:var(--purple);letter-spacing:2.5px;text-transform:uppercase;margin-bottom:10px;font-weight:700;text-align:center}
.p-related-title{font-family:var(--font-sans);font-weight:800;font-size:clamp(26px,3.5vw,36px);color:var(--ink);text-align:center;letter-spacing:-1px;margin-bottom:36px}
.p-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.p-related-card{background:#fff;border:1px solid var(--rule);border-radius:14px;padding:24px 22px;text-decoration:none;color:inherit;transition:transform .2s,border-color .2s}
.p-related-card:hover{transform:translateY(-3px);border-color:var(--purple-mid)}
.p-related-card-num{font-family:var(--font-mono);font-size:10px;color:var(--purple);letter-spacing:1.5px;text-transform:uppercase;font-weight:700;margin-bottom:8px}
.p-related-card-title{font-family:var(--font-sans);font-weight:700;font-size:18px;color:var(--ink);line-height:1.25;margin-bottom:6px;letter-spacing:-.3px}
.p-related-card-desc{font-family:var(--font-sans);font-size:13px;color:var(--ink-2);line-height:1.5}

/* ========= FOOTER ========= */
.footer{background:var(--purple-deeper);color:#fff;border-top:1px solid rgba(255,255,255,.08)}
.footer-top{max-width:1200px;margin:0 auto;padding:64px 48px 40px;display:grid;grid-template-columns:2.5fr 1fr 1fr 1.5fr;gap:48px}
.footer-brand-name{font-family:var(--font-display);font-size:28px;font-weight:700;font-style:italic;color:#fff;margin-bottom:14px}
.footer-brand-desc{font-size:14px;color:rgba(255,255,255,.55);line-height:1.65;max-width:300px}
.footer-col-title{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:1.5px;color:rgba(255,255,255,.35);margin-bottom:18px;text-transform:uppercase}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.65);text-decoration:none;margin-bottom:10px;transition:color .2s ease-out}
.footer-col a:hover{color:#fff}
.footer-bottom{max-width:1200px;margin:0 auto;padding:20px 48px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.footer-copy{font-size:12px;color:rgba(255,255,255,.4)}
.footer-links{display:flex;gap:20px}
.footer-links a{font-size:12px;color:rgba(255,255,255,.4);text-decoration:none}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .p-step,.p-stack,.p-pane,.p-tree-q{opacity:1 !important;transform:none !important}
}
@media(max-width:1024px){
  .p-row{grid-template-columns:1fr 1fr 1fr;row-gap:32px}
  .p-stacks{grid-template-columns:1fr;gap:14px}
  .p-panes{grid-template-columns:1fr;gap:14px}
  .p-related-grid{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr;padding:48px 32px 32px}
}
@media(max-width:760px){
  .header{padding:12px 20px}
  .header-nav{display:none}
  .header-burger{display:flex;align-items:center;justify-content:center}
  .crumb{padding-top:82px}
  .p-hero{padding:36px 22px 40px}
  .p-deck{font-size:18px}
  .p-diagram{padding:36px 22px;margin:0 16px 48px;border-radius:18px}
  .p-row{grid-template-columns:1fr;gap:24px}
  .p-pict{width:80px;height:80px}
  .p-step-desc{max-width:none}
  .p-body{padding:0 22px 64px}
  .p-body p,.p-body li{font-size:16.5px}
  .p-sku{padding:28px 22px;margin:48px 16px}
  .p-sku-name{font-size:26px}
  .p-related{padding:48px 22px}
  .p-related-grid{grid-template-columns:1fr;gap:12px}
  .footer-top{grid-template-columns:1fr;padding:48px 24px 32px}
  .footer-bottom{padding:18px 24px;flex-direction:column;gap:10px;text-align:center}
}