@font-face {
  font-family: "NetmarbleL";
  src: url("/css/font/netmarbleL.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
}

.signature3 {
  --bg-base: #1d1f24;
  --bg-deep: #16181d;
  --bg-card: #f6f6f7;
  --line: rgba(255, 255, 255, 0.18);
  --text-main: #fff;
  --text-soft: rgba(255, 255, 255, 0.82);
  --text-dim: rgba(255, 255, 255, 0.62);
  --text-dark: #222;
  --max-w: 1100px;
  width: 100%;
  color: var(--text-main);
  background: var(--bg-base);
  font-family: "ArtnerPrimary", "Noto Sans KR", sans-serif;
}

.signature3 * {
  box-sizing: border-box;
}

.signature3 img {
  display: block;
  max-width: 100%;
  height: auto;
}

.signature3-container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.signature3-container--narrow {
  max-width: 980px;
}

.signature3-section {
  padding: 110px 0;
  background: var(--bg-base);
}

.signature3-section--dark {
  background: var(--bg-base);
}

.signature3-hero {
  min-height: 780px;
  padding: 130px 0 120px;
  background:
    linear-gradient(90deg, rgba(247, 242, 233, 0.9) 0%, rgba(247, 242, 233, 0.62) 38%, rgba(247, 242, 233, 0.1) 70%),
    url("/img/sub/signature_03/01.jpg") center center / cover no-repeat;
  color: #111;
}

.signature3-hero__inner {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 80px 24px;
}

.signature3-hero__eyebrow {
  margin: 0;
  font-size: clamp(24px, 2vw, 62px);
  line-height: 1.05;
  font-weight: 300;
  color: rgba(0, 0, 0, 0.42);
}

.signature3-hero__title {
  margin: 12px 0 0;
  font-size: clamp(42px, 6vw, 70px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.signature3-hero__desc {
  margin: 52px 0 0;
  max-width: 640px;
  font-size: clamp(20px, 2vw, 25px);
  line-height: 1.48;
  letter-spacing: -0.02em;
  color: rgba(0, 0, 0, 0.86);
}

.section-subtitle {
  margin: 0;
  text-align: center;
  font-size: 20px;
  line-height: 1.9;
  color: var(--text-soft);
}

.section-title {
  margin: 0;
  text-align: center;
  font-size: clamp(30px, 3.2vw, 35px);
  line-height: 1.32;
  letter-spacing: -0.02em;
  font-weight: 400;
}

.section-title strong {
  font-weight: 700;
}

.section-title--spaced {
  margin: 6px 0 34px;
}

.section-title__divider {
  display: block;
  width: 1px;
  height: 64px;
  margin: 24px auto;
  background: rgba(255, 255, 255, 0.5);
}

.artcell-intro .signature3-hero__visual {
  margin: 40px auto 56px;
  max-width: 760px;
  overflow: hidden;
}

.measure-grid {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 0px;
  max-width: 700px;
  margin: 0 auto;
  justify-content: center;
}

.measure-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.measure-list li {
  position: relative;
  padding-left: 18px;
  font-size: 20px;
  line-height: 1.9;
  color: var(--text-soft);
}

.measure-list li::before {
  content: "▶";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 11px;
  color: var(--text-main);
}

.artcell-benefit {
  grid-template-columns: 1fr;
  max-width: 860px;
}

.artcell-benefit__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.artcell-benefit__list li {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.artcell-benefit__list li:last-child {
  border-bottom: 0;
}

.artcell-benefit__title {
  display: block;
  font-size: 30px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-main);
}

.artcell-benefit__list .section-subtitle {
  text-align: left;
  line-height: 1.8;
  color: var(--text-soft);
}

.artcell-tech__table {
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.artcell-tech__row {
  display: grid;
  grid-template-columns: 30% minmax(0, 1fr);
}

.artcell-tech__row + .artcell-tech__row {
  border-top: 1px solid rgba(0, 0, 0, 0.22);
}

.artcell-tech__visual {
  position: relative;
  min-height: 260px;
  overflow: hidden;
}

.artcell-tech__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.artcell-tech__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 13, 20, 0.14) 0%, rgba(12, 13, 20, 0.64) 100%);
}

.artcell-tech__point {
  position: absolute;
  left: 22px;
  bottom: 20px;
  z-index: 1;
  margin: 0;
  color: #fff;
  font-size: 18px;
  line-height: 1.34;
  letter-spacing: -0.02em;
}

.artcell-tech__point strong {
  display: block;
  font-size: 29px;
  line-height: 1.2;
  font-weight: 700;
}

.artcell-tech__content {
  background: #efeff1;
  color: #22252b;
  padding: 30px 34px 28px;
}

.artcell-tech__content h4 {
  margin: 0 0 16px;
  font-size: 27px;
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.artcell-tech__content p {
  margin: 0;
  font-size: 19px;
  line-height: 1.72;
  color: #2c2f36;
}

.process-card {
  background: var(--bg-card);
  color: var(--text-dark);
  overflow: hidden;
}

.process-card__thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.process-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.process-card h4 {
  margin: 18px 18px 10px;
  font-size: 29px;
  line-height: 1.35;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.process-card p {
  margin: 0 18px 20px;
  font-size: 20px;
  line-height: 1.72;
  color: #2f3135;
}

.artcell-process .process-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.artcell-process .process-card {
  display: flex;
  flex-direction: column;
  background: #efeff1;
}

.artcell-process .process-card__thumb {
  aspect-ratio: 343 / 127;
  margin-top: auto;
}

.artcell-process .process-card:nth-child(1) .process-card__thumb img {
  object-position: center 42%;
}

.artcell-process .process-card:nth-child(2) .process-card__thumb img {
  object-position: center 54%;
}

.artcell-process .process-card:nth-child(3) .process-card__thumb img {
  object-position: center 50%;
}

.artcell-process .process-card:nth-child(4) .process-card__thumb img {
  object-position: center 40%;
}

.artcell-process .process-card h4 {
  margin-top: 0;
  font-size: 28px;
  line-height: 1.34;
}

.artcell-process .process-card p {
  margin-bottom: 16px;
  font-size: 19px;
  line-height: 1.72;
}

.artcell-process .process-card__step {
  margin: 20px 18px 6px;
  font-size: 16px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: #5f6166;
}

.artcell-process .process-card p strong {
  display: inline-block;
  margin-top: 2px;
  margin-bottom: 1px;
  font-weight: 700;
  color: #22252b;
}

.artcell-recommend .body-copy-card {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.artcell-recommend .body-copy-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}

.artcell-recommend .body-copy-item h4 {
  margin: 0 0 18px;
  font-size: 31px;
  line-height: 1.34;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.artcell-recommend .body-copy-item h4 small {
  font-size: 0.56em;
  font-weight: 400;
  color: var(--text-dim);
}

.artcell-recommend .measure-list {
  display: grid;
  gap: 12px;
}

.artcell-recommend .measure-list li {
  font-size: 20px;
  line-height: 1.75;
}

.artcell-recommend .measure-list li {
  padding-left: 0;
}

.artcell-recommend .measure-list li::before {
  content: none;
}

.artcell-recommend .measure-list li strong {
  display: block;
  position: relative;
  padding-left: 18px;
  margin-bottom: 5px;
  font-size: 1.08em;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
}

.artcell-recommend .measure-list li span {
  color: var(--text-soft);
}

.artcell-point .section-subtitle + .section-title {
  margin-top: 8px;
}

.artcell-point .body-copy-card {
  margin-top: 54px;
  display: grid;
  gap: 34px;
}

.artcell-point .body-copy-item {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

.artcell-point__content {
  min-width: 0;
}

.artcell-point__content h4 {
  margin: 0 0 12px;
}

.artcell-point__content p {
  margin: 0;
}

.body-copy-card__image {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
}

.body-copy-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.body-copy-item h4 {
  margin: 0 0 12px;
  font-size: 31px;
  line-height: 1.32;
}

.body-copy-item p {
  margin: 0;
  font-size: 20px;
  line-height: 1.76;
  color: var(--text-soft);
}

.signature3-outro {
  min-height: 560px;
  display: flex;
  align-items: flex-end;
  padding: 90px 0;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(8, 14, 8, 0.2) 0%, rgba(8, 14, 8, 0.72) 75%),
    url("/img/sub/default/bg2.jpg") center center / cover no-repeat;
}

.signature3-outro__eyebrow {
  margin: 0;
  font-family: "NetmarbleL", "Cormorant Garamond", serif;
  font-size: clamp(20px, 2vw, 26px);
  color: rgba(255, 255, 255, 0.88);
}

.signature3-outro__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 2.9vw, 35px);
  line-height: 1.34;
  letter-spacing: -0.02em;
  font-weight: 400;
}

.signature3-outro__title strong {
  font-weight: 700;
}

@media (max-width: 1024px) {
  .signature3-section {
    padding: 60px 0;
  }

  .signature3-hero {
    min-height: 650px;
    padding: 100px 0;
    background:
      linear-gradient(90deg, rgba(247, 242, 233, 0.92) 0%, rgba(247, 242, 233, 0.7) 48%, rgba(247, 242, 233, 0.24) 78%),
      url("/img/sub/signature_03/01.jpg") 66% center / cover no-repeat;
  }

  .signature3-hero__title {
    font-size: clamp(40px, 8vw, 74px);
  }

  .signature3-hero__desc {
    margin-top: 36px;
    font-size: clamp(18px, 2.8vw, 30px);
  }

  .section-subtitle {
    font-size: 19px;
  }

  .measure-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }


  .artcell-benefit__list li {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 18px;
  }

  .artcell-benefit__list .section-subtitle {
    font-size: 19px;
  }

  .artcell-tech__table {
    max-width: 100%;
  }

  .artcell-tech__row {
    grid-template-columns: 1fr;
  }

  .artcell-tech__visual {
    min-height: 220px;
    max-height: 260px;
  }

  .artcell-tech__point {
    left: 16px;
    bottom: 14px;
    font-size: 18px;
  }

  .artcell-tech__point strong {
    font-size: 28px;
  }

  .artcell-tech__content {
    padding: 22px 18px 20px;
  }

  .artcell-tech__content h4 {
    margin-bottom: 10px;
    font-size: 28px;
  }

  .artcell-tech__content p {
    font-size: 20px;
    line-height: 1.68;
  }

  .process-card h4 {
    font-size: 27px;
  }

  .process-card p {
    font-size: 19px;
  }

  .artcell-process .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .artcell-process .process-card__thumb {
    aspect-ratio: 343 / 127;
  }

  .artcell-process .process-card__step {
    font-size: 14px;
    margin-top: 16px;
  }

  .artcell-process .process-card h4 {
    font-size: 27px;
  }

  .artcell-process .process-card p {
    font-size: 19px;
    line-height: 1.68;
  }

  .artcell-recommend .body-copy-item h4 {
    font-size: 29px;
  }

  .artcell-recommend .measure-list li {
    font-size: 19px;
  }

  .artcell-recommend .measure-list li strong {
    margin-bottom: 4px;
  }

  .body-copy-item h4 {
    font-size: 29px;
  }

  .body-copy-item p {
    font-size: 19px;
  }

  .signature3-outro__eyebrow {
    font-size: 24px;
  }

  .signature3-outro__title {
    font-size: 32px;
  }
}

@media (max-width: 767px) {
  .signature3-container,
  .signature3-hero__inner {
    padding: 0 16px;
  }

  .signature3-section {
    padding: 30px 0;
  }

  .signature3-hero {
    min-height: 560px;
    padding: 76px 0;
    background:
      linear-gradient(90deg, rgba(247, 242, 233, 0.9) 0%, rgba(247, 242, 233, 0.8) 56%, rgba(247, 242, 233, 0.55) 100%),
      url("/img/sub/signature_03/01.jpg") 74% center / cover no-repeat;
  }

  .signature3-hero__eyebrow {
    font-size: clamp(18px, 5.2vw, 26px);
  }

  .signature3-hero__title {
    font-size: clamp(34px, 10vw, 52px);
    line-height: 1.08;
  }

  .signature3-hero__desc {
    margin-top: 26px;
    max-width: 100%;
    font-size: clamp(16px, 4.5vw, 22px);
  }

  .section-title {
    font-size: clamp(24px, 7vw, 28px);
  }

  .section-subtitle {
    font-size: 16px;
    line-height: 1.75;
  }

  .section-title__divider {
    height: 30px;
    margin: 10px auto;
  }

  .artcell-intro .signature3-hero__visual {
    margin: 26px auto 34px;
  }

  .artcell-benefit__list {
    gap: 10px;
  }

  .artcell-benefit__list li {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 8px 0;
  }

  .artcell-benefit__title {
    font-size: 15px;
    line-height: 1.35;
    text-align: center;
  }

  .artcell-benefit__list .section-subtitle {
    font-size: 17px;
    line-height: 1.7;
  }

  .process-card h4 {
    margin: 14px 14px 8px;
    font-size: 22px;
  }

  .process-card p {
    margin: 0 14px 14px;
    font-size: 16px;
    line-height: 1.65;
  }

  .artcell-tech__point {
    font-size: 16px;
  }

  .artcell-tech__point strong {
    font-size: 24px;
  }

  .artcell-tech__content h4 {
    font-size: 20px;
    line-height: 1.45;
  }

  .artcell-tech__content p {
    font-size: 12px;
    line-height: 1.72;
  }

  .artcell-process .process-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .artcell-process .process-card__thumb {
    aspect-ratio: 343 / 127;
  }

  .artcell-process .process-card__step {
    font-size: 13px;
    margin: 14px 14px 5px;
  }

  .artcell-process .process-card h4 {
    font-size: 20px;
  }

  .artcell-process .process-card p {
    font-size: 12px;
    line-height: 1.7;
  }

  .artcell-recommend .body-copy-item {
    padding: 22px 0;
  }

  .artcell-recommend .body-copy-item h4 {
    font-size: 20px;
    margin-bottom: 12px;
  }

  .artcell-recommend .measure-list li {
    font-size: 15px;
    line-height: 1.7;
    padding-left: 0;
  }

  .artcell-recommend .measure-list li strong {
    padding-left: 0;
    margin-bottom: 3px;
  }
  .artcell-recommend .measure-list li span{
    display: block;
    font-size: 10px;
  }
  .artcell-point .body-copy-card {
    margin-top: 30px;
    gap: 24px;
  }

  .artcell-point .body-copy-item {
    grid-template-columns: 120px 1fr;
    gap: 14px;
  }

  .artcell-point__content h4,
  .artcell-point__content p {
    text-align: center;
  }

  .body-copy-card__image {
    width: min(120px, 48vw);
    margin: 0 auto;
  }

  .body-copy-item h4 {
    font-size: 20px;
    text-align: center;
  }

  .body-copy-item p {
    font-size: 10px;
    line-height: 1.75;
    text-align: center;
  }

  .body-copy-item p span{
    display: block;
  }

  .signature3-outro {
    min-height: 360px;
    align-items: center;
    padding: 64px 0;
  }

  .signature3-outro__eyebrow {
    font-size: clamp(18px, 4.8vw, 22px);
  }

  .signature3-outro__title {
    margin-top: 10px;
    font-size: clamp(24px, 6.8vw, 28px);
  }
  .artcell-recommend .body-copy-item h4 small{
    display: block;
  }
}

@media (max-width: 520px) {
  .signature3-hero {
    min-height: 520px;
  }

  .signature3-hero__desc {
    font-size: 15px;
    line-height: 1.7;
  }

  .measure-list li {
    font-size: 15px;
  }

}
/* Non-hero typography sync */
.signature3 .section-title {
  font-size: 35px;
}
.signature3 .section-subtitle {
  font-size: 20px;
}

@media (max-width: 767px) {
  .signature3 .section-title {
    font-size: 20px;
    margin:6px 0 6px;
  }
  .signature3 .section-subtitle {
    font-size: clamp(10px, 2vw, 15px);
    text-align: center;
  }
}