@charset "utf-8";

#atc_expertise {
  --expertise-cyan: #00a6cf;
  --expertise-layout: 1600px;
  --expertise-gutter: 32px;
  position: relative;
  width: 100%;
  min-width: var(--main-size);
  min-height: 1080px;
  overflow: hidden;
  isolation: isolate;
  background: #fff;
  font-family: var(--k-font), var(--e-font), "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: #17191b;
}

#atc_expertise .expertise-backdrop {
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    linear-gradient(90deg, #fff 0%, rgba(255,255,255,.97) 28%, rgba(255,255,255,.84) 55%, rgba(255,255,255,.68) 100%),
    linear-gradient(180deg, rgba(255,255,255,.42) 0%, rgba(255,255,255,.14) 50%, #fff 100%),
    url("img/im-chansu-surgery-background.webp") center / cover no-repeat;
}

#atc_expertise .expertise-layout {
  position: relative;
  z-index: 1;
  width: min(var(--expertise-layout), calc(100% - var(--expertise-gutter) * 2));
  min-height: 1080px;
  margin: 0 auto;
}

#atc_expertise .expert-identity {
  position: absolute;
  z-index: 4;
  top: 318px;
  left: 0;
  color: #17191b;
}

#atc_expertise .expert-brand,
#atc_expertise .expert-role {
  margin: 0;
}

#atc_expertise .expert-brand {
  color: #009fc4;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
  opacity: 1;
}

#atc_expertise .expert-role {
  margin-top: 8px;
  font-size: 17px;
  color: #17191b;
  opacity: 1;
}

#atc_expertise .expert-identity > span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 24px 0 20px;
  background: var(--expertise-cyan);
}

#atc_expertise .expert-identity > strong,
#atc_expertise .expert-identity > small {
  display: block;
}

#atc_expertise .expert-identity > strong {
  font-size: 38px;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -.05em;
  color: #17191b;
  opacity: 1;
}

#atc_expertise .expert-identity > small {
  margin-top: 8px;
  font-size: 17px;
  color: #17191b;
  opacity: 1;
}

#atc_expertise .expert-portrait {
  position: absolute;
  z-index: 2;
  top: 92px;
  left: 132px;
  width: 480px;
  height: 740px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

#atc_expertise .expert-portrait::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 32px -40px 0 0;
  border-radius: 50%;
  background: rgba(255,255,255,.72);
  filter: blur(42px);
}

#atc_expertise .expert-portrait img {
  display: block;
  width: 480px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 20px 28px rgba(39, 56, 62, .08));
  /* 원본 사진이 허리에서 잘려 있어 하단 단면이 드러난다 — WHY DODREAM 섹션과 동일하게 페이드 처리 */
  -webkit-mask-image: linear-gradient(to bottom, #000 0, #000 74%, rgba(0,0,0,.55) 88%, transparent 100%);
          mask-image: linear-gradient(to bottom, #000 0, #000 74%, rgba(0,0,0,.55) 88%, transparent 100%);
}

#atc_expertise .expertise-content {
  position: absolute;
  top: 152px;
  left: 720px;
  width: 720px;
}

#atc_expertise .expertise-eyebrow {
  margin: 0 0 20px;
  color: #009fc4;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .26em;
}

#atc_expertise .expertise-heading {
  margin: 0;
  font-size: 54px;
  line-height: 1.16;
  letter-spacing: -.045em;
  font-weight: 700;
  color: #17191b;
}

#atc_expertise .expertise-heading strong {
  color: #00a5bc;
  font-weight: 700;
}

#atc_expertise .expertise-description {
  margin: 34px 0 42px;
  color: #4e5357;
  font-size: 18px;
  line-height: 1.7;
  letter-spacing: -.025em;
}

#atc_expertise .expertise-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

#atc_expertise .expertise-list li {
  min-height: 68px;
  padding: 0 30px;
  display: grid;
  grid-template-columns: 62px 1fr;
  align-items: center;
  border: 1px solid rgba(82, 92, 97, .18);
  border-radius: 36px;
  color: #454a4e;
  background: rgba(255,255,255,.76);
  box-shadow: 0 9px 25px rgba(29, 72, 86, .035);
  backdrop-filter: blur(8px);
  font-size: 18px;
}

#atc_expertise .expertise-list b {
  position: relative;
  color: #00a4c3;
  font-size: 19px;
  font-weight: 700;
}

#atc_expertise .expertise-list b::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 14px;
  width: 1px;
  height: 24px;
  background: rgba(74, 83, 87, .24);
  transform: translateY(-50%);
}

#atc_expertise .expertise-list strong { font-weight: 700; }

#atc_expertise .expertise-footer {
  margin-top: 42px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
}

#atc_expertise .expertise-footer a {
  flex: 0 0 238px;
  height: 58px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1.5px solid #00a4c8;
  border-radius: 30px;
  color: #009fc4;
  text-decoration: none;
  font-size: 17px;
  font-weight: 600;
  transition: color .2s ease, background .2s ease;
}

#atc_expertise .expertise-footer a:hover {
  color: #fff;
  background: #00a4c8;
}

#atc_expertise .expertise-footer a:focus-visible {
  outline: 3px solid #087eaa;
  outline-offset: 4px;
}

#atc_expertise .expertise-footer a span { font-size: 28px; font-weight: 300; }

@media (max-width: 1400px) {
  #atc_expertise .expert-portrait { left: 30px; width: 440px; height: 680px; }
  #atc_expertise .expert-portrait img { width: 440px; }
  #atc_expertise .expertise-content { left: 600px; width: calc(100% - 600px); }
  #atc_expertise .expertise-heading { font-size: 48px; }
  #atc_expertise .expertise-footer { align-items: flex-start; }
  #atc_expertise .expertise-footer p { white-space: normal; }
}

@media (max-width: 1180px) {
  #atc_expertise,
  #atc_expertise .expertise-layout { min-height: 1040px; }
  #atc_expertise .expert-identity { top: 150px; }
  #atc_expertise .expert-portrait { top: 150px; left: 40px; width: 360px; height: 580px; }
  #atc_expertise .expert-portrait img { width: 360px; }
  #atc_expertise .expertise-content { top: 90px; left: 48%; width: 52%; }
  #atc_expertise .expertise-heading { font-size: 42px; }
  #atc_expertise .expertise-description { font-size: 16px; }
  #atc_expertise .expertise-list li { padding: 0 22px; font-size: 15px; }
  #atc_expertise .expertise-footer { flex-direction: column; margin-top: 30px; }
  #atc_expertise .expertise-footer a { flex-basis: 56px; width: 238px; }
}

@media (max-width: 760px) {
  #atc_expertise { min-height: auto; padding: 0 var(--expertise-gutter) 70px; }
  #atc_expertise .expertise-backdrop { opacity: .34; background-position: 62% center; }
  #atc_expertise .expertise-layout {
    width: 100%;
    min-height: auto;
    display: flex;
    flex-direction: column;
  }
  #atc_expertise .expert-identity,
  #atc_expertise .expert-portrait,
  #atc_expertise .expertise-content { position: relative; inset: auto; }
  #atc_expertise .expert-identity { order: 1; padding-top: 58px; }
  #atc_expertise .expert-brand { font-size: 15px; }
  #atc_expertise .expert-role,
  #atc_expertise .expert-identity > small { font-size: 15px; }
  #atc_expertise .expert-identity > strong { font-size: 34px; }
  #atc_expertise .expert-portrait { order: 2; width: 100%; height: 420px; margin: -100px auto 0; justify-content: flex-end; overflow: hidden; }
  #atc_expertise .expert-portrait img { width: 280px; margin-right: -18px; }
  #atc_expertise .expertise-content { order: 3; width: 100%; padding-top: 44px; }
  #atc_expertise .expertise-eyebrow { font-size: 15px; }
  #atc_expertise .expertise-heading { font-size: clamp(38px, 11vw, 48px); }
  #atc_expertise .expertise-description { margin: 26px 0 30px; font-size: 15px; }
  #atc_expertise .expertise-description br { display: none; }
  #atc_expertise .expertise-list li { min-height: 72px; padding: 12px 18px; grid-template-columns: 52px 1fr; font-size: 14px; line-height: 1.45; }
  #atc_expertise .expertise-list b::after { right: 12px; }
  #atc_expertise .expertise-footer { align-items: stretch; }
  #atc_expertise .expertise-footer p { line-height: 1.7; }
  #atc_expertise .expertise-footer em { display: block; margin: 4px 0 0; }
  #atc_expertise .expertise-footer a { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  #atc_expertise .expertise-footer a { transition: none; }
}