/* 기술 소개 페이지 */
.ab { max-width: 1000px; margin: 0 auto; padding: 0 clamp(18px, 5vw, 48px) 80px; }
/* 히어로 — 다크존, 전체 너비 */
.ab-hero {
  position: relative; color: var(--txt);
  width: 100vw; margin-left: calc(-50vw + 50%);
  height: 480px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 40px 24px 48px;
  text-align: center;
  background:
    radial-gradient(55% 60% at 50% -10%, rgba(63,123,255,.22), transparent 60%),
    var(--bg);
  overflow: hidden;
  margin-bottom: clamp(40px, 6vw, 64px);
}
.ab-hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0; opacity: .4;
  background-image:
    linear-gradient(rgba(120,150,220,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,150,220,.05) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(75% 70% at 50% 30%, #000, transparent 92%);
  mask-image: radial-gradient(75% 70% at 50% 30%, #000, transparent 92%);
}
.ab-hero > * { position: relative; z-index: 1; max-width: 860px; margin-left: auto; margin-right: auto; }
.ab-hero .ab-kicker { font-size: 12px; letter-spacing: .28em; color: var(--cyan); font-weight: 700; margin-bottom: 20px; }
.ab-hero h1 { font-size: clamp(32px, 5.5vw, 56px); font-weight: 800; line-height: 1.12; letter-spacing: -.03em; margin-bottom: 22px; color: var(--txt); }
.ab-hero h1 em { color: var(--blue-2); }
.ab-hero .ab-lead { font-size: clamp(15px, 1.7vw, 18px); color: var(--txt-2); line-height: 1.75; max-width: 680px; }
.ab-hero .ab-lead b { color: var(--txt); font-weight: 700; }
.ab-hero .ab-badge { display: inline-flex; align-items: center; gap: 9px; margin-top: 26px; font-size: 13px; color: var(--txt-2); background: var(--panel); border: 1px solid var(--line-2); border-radius: 100px; padding: 9px 18px; }
.ab-hero .ab-badge b { color: var(--cyan); }
.ab-hero .ab-badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

.ab-sec { margin-bottom: clamp(44px, 6vw, 76px); }
.ab-sec-head { display: flex; gap: 18px; margin-bottom: 26px; align-items: flex-start; }
.ab-sec-head h2 { font-size: clamp(21px, 3vw, 30px); font-weight: 800; letter-spacing: -.02em; margin-bottom: 7px; }
.ab-sec-head p { font-size: 14.5px; color: var(--ltxt-2); line-height: 1.6; max-width: 700px; }

/* 파이프라인 */
.ab-pipe { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.pipe-step { background: var(--lpanel); border: 1px solid var(--lline); border-radius: var(--r); padding: 22px; position: relative; box-shadow: var(--lshadow); }
.pipe-step .pn { font-size: 12px; font-weight: 800; color: var(--laccent); letter-spacing: .05em; }
.pipe-step h3 { font-size: 16px; font-weight: 700; margin: 8px 0 8px; }
.pipe-step p { font-size: 13px; color: var(--ltxt-2); line-height: 1.55; }
.pipe-step .pt { margin-top: 12px; font-size: 11.5px; color: var(--laccent); }
.pipe-step:not(:last-child)::after { content: "→"; position: absolute; right: -11px; top: 50%; transform: translateY(-50%); color: var(--laccent); font-weight: 800; z-index: 2; }

/* 기술 카드 */
.ab-tech { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.tech-card { background: var(--lpanel); border: 1px solid var(--lline); border-radius: var(--r); padding: 22px; box-shadow: var(--lshadow); }
.tech-card .tg { font-size: 11px; font-weight: 700; color: var(--laccent); letter-spacing: .04em; text-transform: uppercase; }
.tech-card h3 { font-size: 16.5px; font-weight: 700; margin: 8px 0; }
.tech-card p { font-size: 13.5px; color: var(--ltxt-2); line-height: 1.6; }

/* 검증 */
.ab-verify { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.verify-card { background: var(--lpanel); border: 1px solid var(--lline); border-radius: var(--r); padding: 24px; box-shadow: var(--lshadow); }
.verify-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 14px; }
.verify-list { display: flex; flex-direction: column; gap: 10px; }
.verify-item { display: flex; gap: 10px; font-size: 13.5px; color: var(--ltxt-2); line-height: 1.5; }
.verify-item .vk { color: var(--laccent); flex-shrink: 0; }
.verify-big { display: flex; align-items: baseline; gap: 10px; margin-bottom: 6px; }
.verify-big b { font-size: 40px; font-weight: 800; color: var(--laccent); -webkit-text-fill-color: var(--laccent); }
.verify-big span { font-size: 14px; color: var(--ltxt-2); }

/* 품질 지표 */
.ab-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.metric-card { background: var(--lpanel); border: 1px solid var(--lline); border-radius: var(--r); padding: 22px; text-align: center; box-shadow: var(--lshadow); }
.metric-card b { display: block; font-size: 34px; font-weight: 800; letter-spacing: -.02em; color: var(--laccent); -webkit-text-fill-color: var(--laccent); }
.metric-card span { font-size: 12.5px; color: var(--ltxt-2); display: block; margin-top: 7px; line-height: 1.4; }

/* SAM CTA */
.ab-cta { margin: clamp(40px, 6vw, 70px) 0 60px; }
.ab-cta-inner { background: linear-gradient(150deg, var(--laccent-soft), rgba(47,107,255,.04)); border: 1px solid var(--lline-2); border-radius: var(--r-lg); padding: clamp(32px, 5vw, 56px); text-align: center; position: relative; overflow: hidden; box-shadow: var(--lshadow); }
.ab-cta-inner::after { content: ""; position: absolute; top: -40%; right: -10%; width: 400px; height: 400px; background: radial-gradient(circle, var(--laccent-soft), transparent 65%); pointer-events: none; }
.ab-cta-badge { display: inline-grid; place-items: center; width: 56px; height: 56px; border-radius: 16px; background: var(--laccent); font-weight: 800; font-size: 20px; color: #fff; margin: 0 auto 20px; box-shadow: var(--lshadow); }
.ab-cta h2 { font-size: clamp(22px, 3.4vw, 34px); font-weight: 800; letter-spacing: -.02em; margin-bottom: 16px; }
.ab-cta h2 em { color: var(--laccent); }
.ab-cta p { font-size: 15px; color: var(--ltxt-2); line-height: 1.75; max-width: 600px; margin: 0 auto 28px; }
.ab-cta p b { color: var(--ltxt); }
.ab-cta-btn { display: inline-block; background: var(--laccent); color: #fff; font-weight: 600; font-size: 15px; padding: 15px 30px; border-radius: 100px; box-shadow: var(--lshadow); transition: transform .2s; }
.ab-cta-btn:hover { transform: translateY(-2px); }

@media (max-width: 760px) {
  .ab-pipe { grid-template-columns: 1fr 1fr; }
  .pipe-step::after { display: none; }
  .ab-verify { grid-template-columns: 1fr; }
}