/* ======================================================================
   /products/inception — technical product page layer
   Ported 1:1 from the design source "Product Pages/ARTILUX Inception_0708.html"
   (tp-* system: dual-domain chips, technical intro, stat strip, arch split,
   2x2 benefit grid, "where it fits" dual-domain cards). Loaded only on this
   page via $d['css'][]. Tokens (--c-*, --font-*) come from css/artilux-c.css.
   Sibling of css/products_aware.css / css/products_explore.css.
   ====================================================================== */

/* Inception — spans Cloud AI (blue) and Edge AI (teal); blend both rather than picking one */
.concept-c{ --domain-accent:var(--c-blue); --domain-accent2:var(--c-teal); }
.concept-c .eyebrow{ color:var(--c-ink-2); font-size:15px; letter-spacing:0.18em; }
/* Section & CTA headings here are two-line <br> stacks ("Photonic computing" /
   "for real-world intelligence"); .display's global line-height:0.96 is tuned for
   single-line hero type and cramps the stacked lines together — open it up so
   the two lines breathe (mirrors #contact .display in artilux-c.css). */
.concept-c .display{ line-height:1.1; }

/* ---- dual-domain chips (Cloud AI / Edge AI) ---- */
.domain-chips{ display:flex; gap:8px; margin-bottom:22px; }
.domain-chip{ font-family:var(--font-mono); font-size:15px; letter-spacing:0.14em; text-transform:uppercase; color:var(--c-ink-2); text-decoration:none; padding:7px 16px; white-space:nowrap; border:1px solid var(--c-hair-2); border-radius:999px; transition:border-color .2s, color .2s; }
.domain-chip:hover{ border-color:var(--c-ink); color:var(--c-ink); }

/* ---- technical intro (kicker-led) ---- */
.tp-hero{ padding-block:clamp(64px,9vh,100px) 0; border-bottom:1px solid var(--c-hair); }
/* back-link — matches css/products_connect.css so "← Cloud AI | Edge AI" reads
   in the muted mono/uppercase treatment. .tp-back carries the same font/color so
   the bare "|" separator between the two links inherits it too. */
.tp-back{ font-family:var(--font-mono); font-size:16px; letter-spacing:0.20em; text-transform:uppercase; color:var(--c-muted); margin-bottom:24px; }
.back-link{ font-family:var(--font-mono); font-size:16px; letter-spacing:0.20em; text-transform:uppercase; color:var(--c-muted); text-decoration:none; display:inline-flex; align-items:center; gap:8px; transition:color .2s; }
.back-link:hover{ color:var(--c-ink); }
.tp-kicker{ font-family:var(--font-mono); font-size:15px; font-weight:500; letter-spacing:0.20em; text-transform:uppercase; color:var(--c-ink-2); margin-bottom:20px; }
.tp-name{ font-family:var(--font-display); font-weight:800; font-size:clamp(40px,5.6vw,86px); line-height:0.92; letter-spacing:-0.03em; color:var(--c-ink); margin:0; text-transform:none; }
.tp-tagline{ font-family:var(--font-body); font-weight:500; font-size:clamp(20px,2.2vw,28px); letter-spacing:normal; margin-top:20px; max-width:56ch; color:var(--c-ink); }
.tp-desc{ font-size:clamp(16px,1.4vw,20px); line-height:1.5; color:var(--c-ink-2); margin-top:18px; max-width:none; }
.tp-status{ display:inline-flex; align-items:center; gap:8px; font-family:var(--font-mono); font-size:15px; letter-spacing:0.14em; text-transform:uppercase; color:var(--c-ink-2); border:1px solid var(--c-hair-2); border-radius:999px; padding:7px 14px; margin-top:26px; }
.tp-status-dot{ width:7px; height:7px; border-radius:50%; background:var(--c-teal); }
.tp-hero-art{ margin-top:clamp(40px,6vh,64px); aspect-ratio:16/7; border-radius:16px; background:var(--c-bg-2); overflow:hidden; border:1px solid var(--c-hair); }
.tp-hero-art img{ width:100%; height:100%; object-fit:cover; display:block; border-radius:inherit; }

/* ---- stat strip ---- */
.tp-stats{ display:grid; grid-template-columns:repeat(4,1fr); border-bottom:1px solid var(--c-hair); }
.tp-stat{ padding:26px clamp(20px,2.6vw,32px); border-left:1px solid var(--c-hair); }
.tp-stat:first-child{ border-left:none; }
.tp-stat-label{ font-family:var(--font-mono); font-size:15px; letter-spacing:0.16em; text-transform:uppercase; color:var(--c-muted); margin-bottom:10px; }
.tp-stat-val{ font-family:var(--font-display); font-weight:700; font-size:clamp(17px,1.6vw,21px); letter-spacing:-0.01em; color:var(--c-ink); line-height:1.25; }
@media (max-width:760px){ .tp-stats{ grid-template-columns:1fr 1fr; } .tp-stat:nth-child(3){ border-left:none; } .tp-stat{ border-top:1px solid var(--c-hair); } .tp-stat:first-child,.tp-stat:nth-child(2){ border-top:none; } }

/* ---- architecture split (challenge / approach) ---- */
.tp-arch{ padding-block:clamp(72px,10vh,120px); border-bottom:1px solid var(--c-hair); }
.tp-arch-head{ margin-bottom:clamp(36px,5vh,52px); }
.tp-arch-split{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,5vw,72px); }
.tp-arch-col{ border-top:2px solid var(--domain-accent, var(--c-teal)); padding-top:20px; }
.tp-arch-col h3{ font-family:var(--font-display); font-weight:600; font-size:20px; letter-spacing:-0.01em; color:var(--c-ink); margin:0 0 12px; }
.tp-arch-col p{ font-size:15px; line-height:1.7; color:var(--c-ink-2); margin:0; }
@media (max-width:760px){ .tp-arch-split{ grid-template-columns:1fr; } }

/* ---- benefit grid (2x2 strengths & benefits) ---- */
.tp-ff-grid{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--c-hair); border:1px solid var(--c-hair); border-radius:14px; overflow:hidden; margin-top:clamp(36px,5vh,52px); }
.tp-ff-card{ background:var(--c-bg-2); padding:28px; }
.tp-ff-icon{ width:48px; height:48px; margin-bottom:16px; }
.tp-ff-icon svg{ width:100%; height:100%; display:block; }
.tp-ff-name{ font-family:var(--font-display); font-weight:700; font-size:18px; letter-spacing:-0.015em; color:var(--c-ink); margin:0 0 8px; }
.tp-ff-desc{ font-size:15px; line-height:1.6; color:var(--c-ink-2); margin:0; }
@media (max-width:700px){ .tp-ff-grid{ grid-template-columns:1fr; } }

/* ---- "where it fits" dual-domain cards ---- */
.tp-fits{ padding-block:clamp(72px,10vh,120px); background:var(--c-panel); scroll-margin-top:80px; }
.tp-fits-grid{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--c-hair); border:1px solid var(--c-hair); border-radius:14px; overflow:hidden; margin-top:clamp(36px,5vh,52px); }
/* the grid cells are the [data-reveal] wrappers; make them stretch and let the
   card fill them, so a shorter card doesn't expose the grey grid background
   below it (the "grey strip" under the Cloud AI card) */
.tp-fits-grid > *{ display:flex; flex-direction:column; }
.tp-fits-card{ background:var(--c-bg-2); padding:clamp(28px,3vw,40px); display:flex; flex-direction:column; flex:1; text-decoration:none; transition:background .2s; }
.tp-fits-card:hover{ background:var(--c-panel); }
.tp-fits-domain{ font-family:var(--font-mono); font-size:15px; letter-spacing:0.16em; text-transform:uppercase; margin-bottom:14px; }
.tp-fits-title{ font-family:var(--font-display); font-weight:700; font-size:22px; letter-spacing:-0.015em; color:var(--c-ink); margin:0 0 10px; }
.tp-fits-desc{ font-size:15px; line-height:1.65; color:var(--c-ink-2); margin:0 0 20px; flex:1; }
.tp-fits-link{ font-size:15px; font-weight:600; color:var(--c-ink); text-decoration:none; display:inline-flex; align-items:center; gap:6px; }
@media (max-width:700px){ .tp-fits-grid{ grid-template-columns:1fr; } }

/* ---- CTA ---- */
.cta-section{ padding-block:clamp(80px,13vh,150px); border-top:1px solid var(--c-hair); }
/* CTA heading size is the shared .display.h-l (clamp 36→72px) — no per-page override,
   so every closing CTA across the site matches. (was clamp(38px,5.6vw,86px)) */