/* ==========================================================================
   CUSTOM AI DEVELOPMENT — page-specific design system.
   Deliberately different layout language from the ai-hero/value-strip/
   cap-tabs pattern used on ai-product-development.html: full-bleed photo
   hero + scrolling tech marquee, bento grid, vertical timeline, grouped
   accordion, industry cards, tech-stack pills, engagement cards.
   Loaded after styles.css/glass-effects.css — scoped to this page only.
   ========================================================================== */

:root {
  --sol-ink: #0c0c0e;
  --sol-accent: #FA9800;
  --sol-accent-soft: rgba(250,152,0,0.12);
  --sol-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Hero: full-bleed photo, no video, duotone overlay ---------- */
.sol-hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 160px 40px 0;
  background: #050505;
}
.sol-hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.55;
}
.sol-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(5,5,5,0.55) 0%, rgba(5,5,5,0.45) 40%, rgba(5,5,5,0.92) 100%),
    linear-gradient(100deg, rgba(5,5,5,0.85) 10%, rgba(5,5,5,0.2) 55%, rgba(5,5,5,0.7) 100%);
}
.sol-hero__orb { position: absolute; z-index: 1; border-radius: 50%; filter: blur(100px); pointer-events: none; }
.sol-hero__orb--1 { width: 480px; height: 480px; top: -10%; left: -6%; background: rgba(250,152,0,0.22); }
.sol-hero__orb--2 { width: 380px; height: 380px; bottom: 10%; right: -4%; background: rgba(255,255,255,0.06); }
.sol-hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  padding-bottom: 70px;
}
.sol-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 24px;
  padding: 7px 15px 7px 12px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.82);
}
.sol-hero__eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--sol-accent); box-shadow: 0 0 9px 2px rgba(250,152,0,0.75); }
.sol-hero__title {
  margin: 0 0 26px;
  font-size: 76px;
  line-height: 0.98;
  font-weight: 800;
  letter-spacing: -3px;
  color: #fff;
  max-width: 900px;
}
.sol-hero__title span { color: var(--sol-accent); }
.sol-hero__desc { margin: 0; font-size: 18px; line-height: 1.65; color: rgba(255,255,255,0.72); max-width: 620px; }
.sol-hero__cta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 36px; }
.sol-hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  overflow: hidden;
  margin-top: 56px;
  backdrop-filter: blur(16px);
}
.sol-hero__stat { padding: 22px 24px; background: rgba(10,10,11,0.55); }
.sol-hero__stat b { display: block; font-size: 26px; font-weight: 800; color: #fff; letter-spacing: -1px; margin-bottom: 4px; }
.sol-hero__stat span { font-size: 12.5px; color: rgba(255,255,255,0.55); line-height: 1.5; }
@media (max-width: 900px) {
  .sol-hero { padding: 130px 20px 0; min-height: auto; }
  .sol-hero__title { font-size: 42px; letter-spacing: -1.5px; }
  .sol-hero__stats { grid-template-columns: repeat(2, 1fr); margin-top: 40px; }
  .sol-hero__inner { padding-bottom: 44px; }
}

/* ---------- Tech marquee: infinite scrolling strip ---------- */
.sol-marquee { background: var(--sol-ink); border-top: 1px solid rgba(255,255,255,0.08); padding: 22px 0; overflow: hidden; }
.sol-marquee__track { display: flex; gap: 48px; width: max-content; animation: sol-scroll 32s linear infinite; }
.sol-marquee:hover .sol-marquee__track { animation-play-state: paused; }
.sol-marquee__item { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 700; letter-spacing: 0.3px; color: rgba(255,255,255,0.45); white-space: nowrap; }
.sol-marquee__item::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--sol-accent); flex: none; }
@keyframes sol-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- Statement / pull-quote banner ---------- */
.sol-quote { padding: 110px 40px; background: #fff; text-align: center; }
.sol-quote__mark { display: block; font-size: 100px; line-height: 1; font-family: Georgia, serif; color: var(--sol-accent-soft); margin-bottom: -10px; }
.sol-quote__text { max-width: 880px; margin: 0 auto 22px; font-size: 34px; line-height: 1.35; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-quote__sub { max-width: 640px; margin: 0 auto; font-size: 15.5px; line-height: 1.7; color: var(--gray-600); }
@media (max-width: 900px) {
  .sol-quote { padding: 70px 20px; }
  .sol-quote__text { font-size: 24px; }
}

/* ---------- Bento grid: 12 solution categories ---------- */
.sol-bento-section { padding: 20px 40px 100px; max-width: var(--max-width); margin: 0 auto; }
.sol-bento-section__head { max-width: 640px; margin: 0 0 40px; }
.sol-bento-section__head p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
}
.sol-bento-section__head h2 { margin: 0 0 12px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-bento-section__head p { margin: 0; font-size: 15.5px; line-height: 1.7; color: var(--gray-600); }
.sol-bento { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 190px; gap: 16px; }
.sol-bento__item {
  position: relative;
  padding: 26px 24px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--sol-ease), box-shadow 0.35s var(--sol-ease), border-color 0.35s var(--sol-ease);
  overflow: hidden;
}
.sol-bento__item:hover { transform: translateY(-5px); border-color: rgba(250,152,0,0.4); box-shadow: 0 26px 50px -30px rgba(250,152,0,0.4); }
.sol-bento__item--lg { grid-column: span 2; grid-row: span 1; }
.sol-bento__item--tall { grid-row: span 2; }
.sol-bento__item--dark { background: var(--sol-ink); border-color: rgba(255,255,255,0.1); }
.sol-bento__item--dark .sol-bento__title, .sol-bento__item--dark .sol-bento__num { color: #fff; }
.sol-bento__item--dark .sol-bento__text { color: rgba(255,255,255,0.6); }
.sol-bento__num { position: absolute; top: 18px; right: 22px; font-size: 12px; font-weight: 800; color: var(--gray-400); letter-spacing: 0.5px; }
.sol-bento__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 12px; flex: none; margin-bottom: auto;
  background: linear-gradient(155deg, rgba(250,152,0,0.18), rgba(250,152,0,0.05));
  color: var(--sol-accent);
}
.sol-bento__item--dark .sol-bento__icon { background: linear-gradient(155deg, rgba(250,152,0,0.28), rgba(250,152,0,0.08)); }
.sol-bento__title { margin: 14px 0 6px; font-size: 16px; font-weight: 700; color: var(--sol-ink); }
.sol-bento__text { margin: 0; font-size: 13px; line-height: 1.55; color: var(--gray-600); }
@media (max-width: 1100px) {
  .sol-bento { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 200px; }
  .sol-bento__item--lg { grid-column: span 2; }
  .sol-bento__item--tall { grid-row: span 1; }
}
@media (max-width: 640px) {
  .sol-bento { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .sol-bento__item--lg, .sol-bento__item--tall { grid-column: span 1; grid-row: span 1; }
}

/* ---------- Vertical timeline: 5-phase process ---------- */
.sol-timeline-section { padding: 100px 40px; background: var(--gray-50); }
.sol-timeline-wrap { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 70px; align-items: start; }
.sol-timeline-side { position: sticky; top: 120px; }
.sol-timeline-side p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
}
.sol-timeline-side h2 { margin: 0 0 16px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-timeline-side p { margin: 0 0 26px; font-size: 15px; line-height: 1.7; color: var(--gray-600); }
.sol-timeline-side img { width: 100%; height: auto; border-radius: 20px; display: block; box-shadow: 0 30px 60px -30px rgba(12,12,14,0.35); }
.sol-timeline { position: relative; }
.sol-timeline::before { content: ""; position: absolute; left: 23px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.sol-timeline__item { position: relative; padding: 0 0 44px 68px; }
.sol-timeline__item:last-child { padding-bottom: 0; }
.sol-timeline__num {
  position: absolute; left: 0; top: 0; width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #fff; border: 2px solid var(--line); font-size: 15px; font-weight: 800; color: var(--gray-500);
  transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease;
  z-index: 1;
}
.sol-timeline__item:hover .sol-timeline__num { border-color: var(--sol-accent); color: #fff; background: var(--sol-accent); }
.sol-timeline__goal { display: block; margin: 0 0 6px; font-size: 11px; font-weight: 800; letter-spacing: 1.4px; text-transform: uppercase; color: var(--sol-accent); }
.sol-timeline__item h3 { margin: 0 0 10px; font-size: 20px; font-weight: 700; color: var(--sol-ink); }
.sol-timeline__item p { margin: 0 0 14px; font-size: 14.5px; line-height: 1.7; color: var(--gray-600); }
.sol-timeline__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.sol-timeline__tag { padding: 6px 12px; border-radius: 999px; background: #fff; border: 1px solid var(--line); font-size: 12px; font-weight: 600; color: var(--gray-600); }
@media (max-width: 1000px) {
  .sol-timeline-wrap { grid-template-columns: 1fr; gap: 40px; }
  .sol-timeline-side { position: static; }
}

/* ---------- Grouped accordion: AI solution development services ---------- */
.sol-accordion-section { padding: 100px 40px; max-width: var(--max-width); margin: 0 auto; }
.sol-accordion-section__head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.sol-accordion-section__head p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
  justify-content: center; width: 100%;
}
.sol-accordion-section__head h2 { margin: 0 0 12px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-accordion-section__head p { margin: 0; font-size: 15.5px; line-height: 1.7; color: var(--gray-600); }
.sol-accordion { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.sol-accordion__item { border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: #fff; transition: border-color 0.3s ease; }
.sol-accordion__item.is-open { border-color: rgba(250,152,0,0.4); }
.sol-accordion__head { display: flex; align-items: center; gap: 16px; width: 100%; padding: 22px 26px; background: none; border: none; text-align: left; cursor: pointer; }
.sol-accordion__icon-badge {
  display: flex; align-items: center; justify-content: center; flex: none;
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(155deg, rgba(250,152,0,0.16), rgba(250,152,0,0.05)); color: var(--sol-accent);
}
.sol-accordion__head-text { flex: 1; }
.sol-accordion__head-text strong { display: block; font-size: 16.5px; font-weight: 700; color: var(--sol-ink); margin-bottom: 3px; }
.sol-accordion__head-text span { font-size: 13px; color: var(--gray-600); }
.sol-accordion__chev { flex: none; color: var(--gray-500); transition: transform 0.3s var(--sol-ease); }
.sol-accordion__item.is-open .sol-accordion__chev { transform: rotate(180deg); color: var(--sol-accent); }
.sol-accordion__body { max-height: 0; overflow: hidden; transition: max-height 0.4s var(--sol-ease); }
.sol-accordion__item.is-open .sol-accordion__body { max-height: 600px; }
.sol-accordion__list { padding: 0 26px 26px 86px; display: flex; flex-direction: column; gap: 12px; }
.sol-accordion__list li { position: relative; padding-left: 18px; font-size: 14px; line-height: 1.65; color: var(--gray-600); }
.sol-accordion__list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--sol-accent); }
.sol-accordion__list b { color: var(--sol-ink); }
@media (max-width: 640px) {
  .sol-accordion__list { padding-left: 26px; }
}

/* ---------- Benefits: 3-col icon strip ---------- */
.sol-benefits { padding: 0 40px 100px; max-width: var(--max-width); margin: 0 auto; }
.sol-benefits__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-benefit { padding: 34px 30px; border-radius: 18px; background: linear-gradient(160deg, #fffaf2 0%, #fff4e3 100%); border: 1px solid rgba(250,152,0,0.2); }
.sol-benefit__icon { display: flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 13px; background: var(--sol-accent); color: #fff; margin-bottom: 18px; }
.sol-benefit h3 { margin: 0 0 10px; font-size: 17px; font-weight: 700; color: #7a4a00; }
.sol-benefit p { margin: 0; font-size: 14px; line-height: 1.65; color: #55401f; }
@media (max-width: 900px) { .sol-benefits__grid { grid-template-columns: 1fr; } }

/* ---------- Industries served: card grid ---------- */
.sol-industries { padding: 0 40px 100px; max-width: var(--max-width); margin: 0 auto; }
.sol-industries__head { max-width: 640px; margin: 0 0 40px; }
.sol-industries__head p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
}
.sol-industries__head h2 { margin: 0 0 12px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-industries__head p { margin: 0; font-size: 15.5px; line-height: 1.7; color: var(--gray-600); }
.sol-industries__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sol-industry { padding: 28px 26px; border-radius: 16px; border: 1px solid var(--line); transition: transform 0.3s var(--sol-ease), box-shadow 0.3s var(--sol-ease); }
.sol-industry:hover { transform: translateY(-4px); box-shadow: 0 22px 44px -28px rgba(12,12,14,0.28); }
.sol-industry__icon { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 11px; background: var(--sol-ink); color: var(--sol-accent); margin-bottom: 16px; }
.sol-industry h3 { margin: 0 0 8px; font-size: 15.5px; font-weight: 700; color: var(--sol-ink); }
.sol-industry p { margin: 0; font-size: 13.5px; line-height: 1.6; color: var(--gray-600); }
@media (max-width: 900px) { .sol-industries__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .sol-industries__grid { grid-template-columns: 1fr; } }

/* ---------- Tech stack: grouped pill clusters ---------- */
.sol-stack { padding: 90px 40px; background: var(--sol-ink); }
.sol-stack__head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.sol-stack__head p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
  justify-content: center; width: 100%;
}
.sol-stack__head h2 { margin: 0 0 12px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: #fff; }
.sol-stack__head p { margin: 0; font-size: 15px; line-height: 1.7; color: rgba(255,255,255,0.55); }
.sol-stack__groups { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-stack__group { padding: 28px; border-radius: 18px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); }
.sol-stack__group h3 { margin: 0 0 18px; font-size: 13px; font-weight: 800; letter-spacing: 0.8px; text-transform: uppercase; color: var(--sol-accent); }
.sol-stack__pills { display: flex; flex-wrap: wrap; gap: 9px; }
.sol-stack__pill { padding: 8px 14px; border-radius: 999px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); font-size: 13px; font-weight: 600; color: rgba(255,255,255,0.85); }
@media (max-width: 900px) { .sol-stack__groups { grid-template-columns: 1fr; } }

/* ---------- Example engagements: horizontal card row ---------- */
.sol-cases { padding: 100px 40px; max-width: var(--max-width); margin: 0 auto; }
.sol-cases__head { max-width: 640px; margin: 0 0 40px; }
.sol-cases__head p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
}
.sol-cases__head h2 { margin: 0 0 12px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-cases__head p { margin: 0; font-size: 15.5px; line-height: 1.7; color: var(--gray-600); }
.sol-cases__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.sol-case { padding: 28px 26px; border-radius: 18px; background: var(--gray-50); border: 1px solid var(--line); display: flex; flex-direction: column; transition: transform 0.3s var(--sol-ease), box-shadow 0.3s var(--sol-ease); }
.sol-case:hover { transform: translateY(-4px); box-shadow: 0 24px 48px -30px rgba(12,12,14,0.3); }
.sol-case__tag { display: inline-flex; align-self: flex-start; padding: 5px 12px; border-radius: 999px; background: rgba(250,152,0,0.14); color: #a15c00; font-size: 11px; font-weight: 800; letter-spacing: 0.6px; text-transform: uppercase; margin-bottom: 16px; }
.sol-case h3 { margin: 0 0 10px; font-size: 16px; font-weight: 700; color: var(--sol-ink); line-height: 1.4; }
.sol-case p { margin: 0; font-size: 13.8px; line-height: 1.65; color: var(--gray-600); }
@media (max-width: 900px) { .sol-cases__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .sol-cases__grid { grid-template-columns: 1fr; } }

/* ---------- Why partner: two-column sticky + list ---------- */
.sol-why { padding: 100px 40px; background: var(--gray-50); }
.sol-why__wrap { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 60px; }
.sol-why__side { position: sticky; top: 120px; align-self: start; }
.sol-why__side p.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px;
  font-size: 11.5px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--sol-accent);
}
.sol-why__side h2 { margin: 0 0 16px; font-size: 32px; font-weight: 800; letter-spacing: -1px; color: var(--sol-ink); }
.sol-why__side p { margin: 0; font-size: 15px; line-height: 1.7; color: var(--gray-600); }
.sol-why__list { display: flex; flex-direction: column; gap: 4px; }
.sol-why__item { display: flex; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.sol-why__item:last-child { border-bottom: none; }
.sol-why__item-num { flex: none; font-size: 14px; font-weight: 800; color: var(--sol-accent); width: 32px; }
.sol-why__item h3 { margin: 0 0 8px; font-size: 17px; font-weight: 700; color: var(--sol-ink); }
.sol-why__item p { margin: 0; font-size: 14.5px; line-height: 1.7; color: var(--gray-600); }
@media (max-width: 1000px) {
  .sol-why__wrap { grid-template-columns: 1fr; gap: 32px; }
  .sol-why__side { position: static; }
}