/* =============================================================================
   AI Architect — services.css (services.html only)
   Authored exclusively against the vendored design-system aliases in
   /ds/tokens/*.css and the aia-* component classes in /ds/components/*.css.
   No raw hex except the pre-existing sitewide mask-icon color attribute
   (identical on every other page, not introduced here). Survives
   data-surface="paper" (default) and data-surface="ink" unchanged, per the
   design gate (G1-G6). Site chrome (nav/footer/hero primitives) mirrors
   cortex.css's patron; duplicated here rather than shared because each page
   in this repo carries its own standalone stylesheet.
   ============================================================================= */

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--canvas);color:var(--text);font:var(--role-body);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--font-mono);font-feature-settings:"ss01","cv01"}
.container{max-width:1280px;margin:0 auto;padding:0 28px}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:fixed;left:8px;top:8px;width:auto;height:auto;background:var(--canvas);color:var(--text);padding:8px 12px;border:1px solid var(--accent);z-index:1000;border-radius:var(--radius-sm)}

/* ── NAV ─────────────────────────────────────────────────────────────────── */
nav.topnav{position:sticky;top:0;z-index:50;background:color-mix(in oklab, var(--canvas) 92%, transparent);border-bottom:1px solid var(--border)}
nav.topnav .inner{display:flex;align-items:center;justify-content:space-between;padding:16px 28px;max-width:1280px;margin:0 auto;gap:24px}
.logo{display:flex;align-items:center;gap:12px;font-weight:var(--weight-semibold);font-size:var(--text-sm);letter-spacing:-0.01em;color:var(--text)}
.logo-mark{width:28px;height:28px;border:1px solid var(--accent);background:var(--accent-soft);display:grid;place-items:center;border-radius:var(--radius-sm);position:relative;transition:transform .35s ease,background .25s ease;flex:none}
.logo:hover .logo-mark{transform:rotate(45deg);background:var(--accent)}
.logo-mark::before{content:"";position:absolute;inset:5px;border:1px solid var(--accent);border-radius:1px;transform:rotate(45deg)}
.logo-mark::after{content:"";position:absolute;width:5px;height:5px;background:var(--accent);border-radius:50%}
.navlinks{display:flex;gap:24px;align-items:center;font-size:var(--text-sm);color:var(--text-secondary);flex-wrap:wrap}
.navlinks a:not(.nav-cta){position:relative;padding:4px 0;transition:color var(--dur-fast) var(--ease)}
.navlinks a:not(.nav-cta)::after{content:'';position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.navlinks a:not(.nav-cta):hover{color:var(--text)}
.navlinks a:not(.nav-cta):hover::after{transform:scaleX(1)}
.navlinks a[aria-current="page"]{color:var(--accent-ink)}
/* Active-page highlight for /services without editing the shared nav partial */
.page-services .navlinks a[href="/services"]{color:var(--accent-ink)}
.page-services .navlinks a[href="/services"]::after{transform:scaleX(1)}
.nav-cta{background:var(--accent);color:var(--on-accent);padding:9px 18px;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:var(--weight-semibold);letter-spacing:0.01em;transition:background var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease)}
.nav-cta:hover{background:var(--accent-bright);color:var(--on-accent);transform:translateY(-1px)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (max-width:980px){.nav-toggle{display:flex}.navlinks{position:fixed;top:0;right:0;height:100vh;width:min(280px,80vw);background:var(--canvas);flex-direction:column;align-items:flex-start;gap:0;padding:88px 28px 28px;transform:translateX(100%);transition:transform .25s var(--ease);box-shadow:var(--shadow-lg);overflow-y:auto}.navlinks.nav-open{transform:translateX(0)}.navlinks a:not(.nav-cta){display:block;width:100%;padding:12px 0}.navlinks a.nav-cta{display:inline-flex;margin-top:16px}}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:var(--radius-sm);font-weight:var(--weight-medium);font-size:var(--text-sm);transition:background var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease);cursor:pointer;border:none;font-family:inherit}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-primary:hover{background:var(--accent-bright);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn svg{width:14px;height:14px;transition:transform .2s ease}
.btn:hover svg{transform:translateX(3px)}

/* ── Hero ────────────────────────────────────────────────────────────────── */
.sv-hero{padding:80px 0 56px}
.sv-hero .aia-exhibit{display:block;margin-bottom:20px}
.sv-hero h1{font-family:var(--font-serif);font-weight:var(--weight-regular);font-size:clamp(38px,5.4vw,58px);line-height:1.08;letter-spacing:-0.02em;margin:0 0 20px;color:var(--text)}
.sv-hero h1 em{font-style:italic;color:var(--accent-ink)}
.sv-hero-lede{font-size:var(--text-lg);line-height:1.6;color:var(--text-secondary);max-width:720px;margin:0 0 32px}
.sv-cta-group{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.sv-cta-group-center{justify-content:center}

/* ── Sections ────────────────────────────────────────────────────────────── */
.sv-section{padding:88px 0}
.sv-section-alt{padding:88px 0;background:var(--surface-chip);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sv-section-title{font-family:var(--font-serif);font-weight:var(--weight-regular);font-size:clamp(28px,3.4vw,40px);line-height:1.1;letter-spacing:-0.015em;color:var(--text);margin:0 0 14px;text-align:center}
.sv-section-subtitle{font-size:var(--text-md);color:var(--text-secondary);text-align:center;max-width:680px;margin:0 auto 48px;line-height:1.6}

/* ── Engagement journey (dossier anatomy: exhibit head + specimen) ──────── */
.sv-journey{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:20px;max-width:840px;margin-left:auto;margin-right:auto}
.sv-step{padding:28px 32px}
.sv-step-head{display:flex;align-items:baseline;gap:16px;margin-bottom:12px;flex-wrap:wrap}
.sv-step-head h3{font-size:var(--text-2xl);font-weight:var(--weight-semibold);color:var(--text);margin:0;font-family:var(--font-sans)}
.sv-step-body{font-size:var(--text-md);line-height:1.65;color:var(--text-secondary);margin:0 0 16px}
.sv-step-ledger{margin:0}
.sv-step-ledger .aia-ledger__k{width:110px}

/* ── Anthropic partner proof ─────────────────────────────────────────────── */
.sv-proof-card{max-width:720px;margin:0 auto;padding:32px}
.sv-proof-grid{display:flex;gap:32px;align-items:flex-start;flex-wrap:wrap}
.sv-proof-badge-img{width:120px;height:120px;flex:none;border-radius:var(--radius-md);border:1px solid var(--border)}
.sv-proof-detail{flex:1;min-width:240px;display:flex;flex-direction:column;gap:16px}
.sv-proof-ledger{margin:0}
.sv-proof-footnote{max-width:720px;margin:20px auto 0}

/* ── Tooling strip ───────────────────────────────────────────────────────── */
.sv-tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem;max-width:1100px;margin:0 auto}
.sv-tool-card{display:block;transition:border-color 0.3s,transform 0.3s}
.sv-tool-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.sv-tool-card h3{font-size:var(--text-lg);margin:10px 0 6px;color:var(--text)}
.sv-tool-card p{font-size:var(--text-sm);color:var(--text-secondary);line-height:1.55;margin:0}

/* ── CTA section ─────────────────────────────────────────────────────────── */
.sv-cta-section{text-align:center}
.sv-cta-section .sv-section-title{text-align:center}
.sv-cta-section .sv-section-subtitle{text-align:center}

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer{padding:48px 0 40px;color:var(--text-secondary);font-size:var(--text-xs);font-family:var(--font-mono);letter-spacing:var(--tracking-mono);background:var(--canvas);border-top:1px solid var(--border)}
footer .inner{max-width:1280px;margin:0 auto;padding:0 28px;display:flex;flex-direction:column;gap:28px}
footer .frow{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
footer .flogo{color:var(--accent-ink);font-weight:var(--weight-medium);display:flex;align-items:center;gap:10px}
footer a{color:inherit;position:relative;transition:color var(--dur-fast) var(--ease)}
footer a::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--accent-ink);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
footer a:hover{color:var(--accent-ink)}
footer a:hover::after{transform:scaleX(1)}
footer .sitemap{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 32px;padding-top:20px;border-top:1px solid var(--border)}
@media (max-width:780px){footer .sitemap{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){footer .sitemap{grid-template-columns:1fr}}
footer .sitemap-col span.h{display:block;color:var(--text-muted);text-transform:uppercase;letter-spacing:var(--tracking-caps);font-size:var(--text-3xs);margin-bottom:8px}
footer .sitemap-col a{display:block;width:fit-content;padding:3px 0;color:var(--text-secondary)}

@media (max-width:640px){
  .sv-proof-grid{flex-direction:column;align-items:center;text-align:center}
  .sv-step{padding:22px 20px}
  .sv-step-head{flex-direction:column;gap:6px}
}