@media (min-width: 768px) {
  :root {
    --page-gutter: 28px;
  }
}
@media (min-width: 1100px) {
  :root {
    --page-gutter: 36px;
  }
  .site-header__inner {
    min-height: 84px;
  }
  .site-logo img {
    width: 290px;
  }
  .site-nav-toggle {
    display: none;
  }
  .site-nav,
  .site-nav.is-open {
    display: flex;
    position: static;
    max-height: none;
    align-items: center;
    gap: clamp(25px, 3vw, 48px);
    padding: 0;
    border: 0;
    background: transparent;
    overflow: visible;
  }
  .site-nav > ul {
    display: flex;
    align-items: center;
    gap: clamp(22px, 2.5vw, 42px);
  }
  .site-nav > ul > li {
    position: relative;
    border: 0;
  }
  .site-nav > ul > li > a {
    position: relative;
    min-height: 84px;
    color: var(--color-navy);
    font-size: 0.96rem;
  }
  .site-header--home .site-nav > ul > li > a {
    color: #fff;
  }
  .site-nav > ul > li > a:after {
    position: absolute;
    right: 0;
    bottom: 20px;
    left: 0;
    height: 2px;
    background: var(--color-ocean-light);
    content: "";
    transform: scaleX(0);
    transition: transform 0.2s;
  }
  .site-nav > ul > li:hover > a:after,
  .site-nav > ul > li:focus-within > a:after {
    transform: scaleX(1);
  }
  .site-nav li ul {
    visibility: hidden;
    position: absolute;
    top: calc(100% - 10px);
    left: 50%;
    width: 190px;
    padding: 12px 20px;
    background: #fff;
    box-shadow: 0 14px 35px rgba(3, 21, 37, 0.16);
    opacity: 0;
    transform: translate(-50%, 8px);
    transition:
      opacity 0.2s,
      transform 0.2s,
      visibility 0.2s;
  }
  .site-nav li:hover ul,
  .site-nav li:focus-within ul {
    visibility: visible;
    opacity: 1;
    transform: translate(-50%, 0);
  }
  .site-nav li li a {
    min-height: 38px;
    color: var(--color-gray-600);
    font-size: 0.86rem;
  }
  .site-nav li li a:hover {
    color: var(--color-ocean);
  }
  .site-nav__contact {
    display: grid;
    min-width: 190px;
    min-height: 52px;
    margin: 0;
    padding: 7px 15px;
    align-content: center;
    gap: 0;
    text-align: center;
  }
  .site-nav__contact small {
    font-size: 0.68rem;
  }
  .site-nav__contact strong {
    font-size: 1.08rem;
  }
}
@media (max-width: 1180px) and (min-width: 1100px) {
  .site-logo img {
    width: 290px;
  }
  .site-nav > ul {
    gap: 20px;
  }
  .site-nav {
    gap: 24px;
  }
  .site-nav__contact {
    min-width: 160px;
  }
}
@media (max-width: 1099px) {
  .main-hero__shade {
    background: linear-gradient(
      90deg,
      rgba(3, 21, 37, 0.86),
      rgba(3, 21, 37, 0.46) 58%,
      rgba(3, 21, 37, 0.08)
    );
  }
  .main-hero__content {
    width: 58%;
  }
  .main-hero__title {
    font-size: clamp(3rem, 5.4vw, 3.6rem);
  }
  .main-trust__grid,
  .main-problem__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .main-trust article:nth-child(2) {
    border-right: 0;
  }
  .main-trust article:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .main-section-heading {
    gap: 40px;
  }
  .main-problem__grid {
    gap: 14px;
  }
  .main-product__content {
    padding: 48px;
  }
}
@media (max-width: 767px) {
  .site-header__inner {
    min-height: 66px;
  }
  .site-logo img {
    width: 190px;
  }
  .main-hero {
    height: clamp(600px, 88vh, 680px);
  }
  .main-hero__slide {
    background-position: var(--hero-position);
    background-size: cover;
  }
  .main-hero__slide:nth-child(2) {
    background-position: 74% center;
  }
  .main-hero__shade {
    background: linear-gradient(
      180deg,
      rgba(3, 21, 37, 0.12),
      rgba(3, 21, 37, 0.35) 38%,
      rgba(3, 21, 37, 0.9) 70%,
      var(--color-deep-navy)
    );
  }
  .main-hero__inner {
    align-items: flex-start;
  }
  .main-hero__content {
    width: 100%;
    padding: clamp(265px, 39vh, 315px) 0 92px;
  }
  .main-hero__eyebrow {
    margin-bottom: 11px;
  }
  .main-hero__title {
    margin-bottom: 18px;
    font-size: clamp(2.15rem, 9.4vw, 2.75rem);
    line-height: 1.18;
  }
  .main-hero__description {
    margin-bottom: 24px;
    font-size: 0.95rem;
    line-height: 1.65;
  }
  .main-hero__actions {
    flex-wrap: wrap;
  }
  .main-button {
    min-width: 140px;
    min-height: 50px;
    padding-inline: 18px;
  }
  .main-hero__controls {
    bottom: 30px;
  }
  .main-hero__arrow {
    display: none;
  }
  .main-hero__pagination button {
    width: 38px;
  }
  .main-trust__grid {
    grid-template-columns: 1fr;
  }
  .main-trust article,
  .main-trust article:nth-child(2) {
    min-height: 120px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 22px 4px;
  }
  .main-trust article:last-child {
    border-bottom: 0;
  }
  .main-problem,
  .main-product,
  .main-patent,
  .main-other {
    padding: 76px 0;
  }
  .main-section-heading,
  .main-product__panel,
  .main-patent__inner,
  .main-other__grid {
    grid-template-columns: 1fr;
  }
  .main-section-heading {
    gap: 20px;
    margin-bottom: 32px;
  }

  .main-section-description {
    margin-top: 16px;
    font-size: 0.95rem;
  }
  .main-section-heading h2,
  .main-video__heading h2,
  .main-patent h2,
  .main-brand h2 {
    font-size: clamp(2rem, 8.5vw, 2.55rem);
  }
  .main-section-heading > p {
    font-size: 0.95rem;
  }
  .main-problem__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .main-problem__grid article {
    display: grid;
    grid-template-columns: 42% 58%;
  }
  .main-problem__image {
    height: 100%;
    aspect-ratio: auto;
  }
  .main-problem__copy {
    padding: 21px 20px;
  }
  .main-problem__copy h3 {
    margin-top: 8px;
  }
  .main-problem__copy p {
    font-size: 0.84rem;
  }
  .main-product__panel {
    min-height: 0;
  }
  .main-product__visual {
    min-height: 420px;
    padding: 28px;
  }
  .main-product__visual img {
    width: 100%;
    height: 100%;
  }
  .main-product__content {
    padding: 36px 24px 42px;
  }
  .main-product__content h3 {
    font-size: 2rem;
  }
  .main-product__features li {
    gap: 13px;
    font-size: 0.9rem;
  }
  .main-video {
    padding: 76px 0 82px;
  }
  .main-video__heading {
    display: block;
    margin-bottom: 30px;
  }
  .main-patent__inner {
    gap: 35px;
  }
  .main-patent article {
    padding: 30px 24px;
  }
  .main-other article {
    min-height: 235px;
    padding: 30px 24px;
  }
  .main-other article:first-child {
    border-right: 0;
  }
  .main-other h3 {
    margin-top: 46px;
  }
  .main-brand {
    min-height: 580px;
    background-position: 60% center;
  }
  .main-brand__shade {
    background: linear-gradient(
      90deg,
      rgba(3, 21, 37, 0.88),
      rgba(3, 21, 37, 0.35)
    );
  }
  .main-support {
    padding: 64px 0;
  }
  .main-support__inner {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .main-support__phone {
    font-size: 2.35rem;
  }
  .main-support__email {
    margin-bottom: 18px;
  }
  .main-support__shortcuts {
    grid-template-columns: 1fr;
  }
  .main-support__shortcut {
    min-height: 112px;
    padding: 22px 16px;
  }
  .main-support__shortcut + .main-support__shortcut {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    border-left: 0;
  }
  .site-footer {
    padding-top: 48px;
  }
  .site-footer__main {
    display: grid;
    gap: 22px;
  }
  .site-footer__logo img {
    width: 200px;
  }
  .site-footer__info {
    display: grid;
    gap: 7px;
  }
  .site-footer__info > * {
    padding: 0;
  }
  .site-footer__info > *::before {
    display: none;
  }
  .site-footer__bottom {
    display: grid;
    gap: 8px;
    margin-top: 32px;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .main-support__phone {
    gap: 0.28em;
  }
  .main-support__phone-icon {
    display: block;
    width: 1em;
    height: 1em;
    padding: 0.2em;
    border-radius: 50%;
    color: var(--color-white);
    background: var(--color-ocean);
  }
  .main-trust__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .main-trust article,
  .main-trust article:nth-child(2) {
    min-width: 0;
    min-height: 118px;
    padding: 16px 10px;
    gap: 10px;
    border-right: 1px solid rgba(255,255,255,.1);
  }
  .main-trust article:nth-child(2n) { border-right: 0; }
  .main-trust article:nth-child(-n + 2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .main-trust img { width: 34px; height: 34px; }
  .main-trust h3 { font-size: .88rem; }
  .main-trust p { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: .72rem; }

  .main-other__grid,
  .main-other__grid--count-1,
  .main-other__grid--count-2,
  .main-other__grid--count-3,
  .main-other__grid--count-4 {
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
  .main-other article.main-other__card {
    min-height: 0;
    padding: 0;
  }
  .main-other__grid--count-1 { grid-template-columns: minmax(0,1fr); }
  .main-other__content { padding: 14px; }
  .main-other h3 { margin: 7px 0; font-size: 1.05rem; }
  .main-other p { display: -webkit-box; overflow: hidden; margin-bottom: 10px; -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: .8rem; }
  .main-other__content > a { font-size: .82rem; }
  .main-other__image { --product-image-padding: 14px; }

  .main-support__account {
    align-items: flex-start;
    gap: 14px;
    padding: 20px 16px;
  }
  .main-support__bank-logo {
    display: grid;
    justify-items: center;
    gap: 5px;
  }
  .main-support__bank-logo img { width: 38px; height: 27px; }
  .main-support__bank-logo em { font-size: .75rem; }
  .main-support__account-info strong { font-size: 1.18rem; }
  .main-support__account-info > span { font-size: .72rem; line-height: 1.45; }
}

@media (max-width: 340px) {
  .main-other__grid,
  .main-other__grid--count-1,
  .main-other__grid--count-2,
  .main-other__grid--count-3,
  .main-other__grid--count-4 {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 420px) {
  .site-logo img {
    width: 170px;
  }
  .main-hero__title {
    font-size: 2.05rem;
  }
  .main-hero__actions .main-button {
    flex: 1;
    min-width: 0;
    font-size: 0.9rem;
  }
  .main-problem__grid article {
    grid-template-columns: 38% 62%;
  }
  .main-problem__copy {
    padding: 18px 16px;
  }
  .main-problem__copy p {
    line-height: 1.45;
  }
  .main-product__visual {
    min-height: 380px;
  }
  .main-product__visual img {
    width: 100%;
    height: 100%;
  }
  .main-support__phone {
    font-size: 2rem;
  }
}

@media (max-width: 767px) {
  .main-hero__title {
    font-size: clamp(2rem, 8vw, 2.55rem);
  }
  .main-hero__title em {
    font-size: 0.84em;
  }
}
@media (max-width: 420px) {
  .main-hero__title {
    font-size: 1.95rem;
  }
}

@media (max-width: 1099px) and (min-width: 768px) {
  .main-other__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .main-trust article,
  .main-trust article:nth-child(2),
  .main-trust article:nth-child(3) {
    border: 0;
  }
  .main-trust article:nth-child(2)::after {
    display: none;
  }
  .main-trust article:nth-child(-n + 2)::before {
    position: absolute;
    right: 24px;
    bottom: 0;
    left: 24px;
    height: 1px;
    background: rgba(255, 255, 255, 0.13);
    content: "";
  }
}
@media (max-width: 767px) {
  .main-trust article,
  .main-trust article:nth-child(2) {
    border: 0;
  }
  .main-trust article::after {
    top: auto;
    right: 20px;
    bottom: 0;
    left: 20px;
    width: auto;
    height: 1px;
  }
  .main-trust article:last-child::after {
    display: none;
  }
  .main-other__grid {
    gap: 12px;
  }
  .main-other article:first-child {
    border-right: 1px solid var(--color-gray-300);
  }
}

@media (max-width: 767px) {
  .main-trust article:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(255,255,255,.13);
  }
  .main-trust article:nth-child(odd)::after {
    display: block;
    top: 16px;
    right: 0;
    bottom: auto;
    left: auto;
    width: 1px;
    height: calc(100% - 32px);
  }
  .main-trust article:nth-child(even)::after {
    display: none;
  }
}

/*
 * 모바일 Hero 카피는 이미지 하단이 아니라 헤더 아래 상단 영역에서 시작합니다.
 * 세 슬라이드가 같은 기준선을 사용하도록 기존 하단 정렬 값을 명시적으로 덮어씁니다.
 */
@media (max-width: 767px) {
  .main-hero__slide:nth-child(1) {
    background-position: 62% center;
  }

  .main-hero__slide:nth-child(2) {
    background-position: 60% center;
  }

  .main-hero__inner {
    align-items: flex-start;
  }

  .main-hero__content {
    position: relative;
    width: 100%;
    padding-top: clamp(340px, 45vh, 370px);
    padding-bottom: 92px;
  }

  .main-hero__heading {
    position: absolute;
    top: clamp(188px, 25vh, 215px);
    right: 0;
    left: 0;
  }

  .main-hero__slide:nth-child(1) .main-hero__heading {
    top: clamp(158px, 20vh, 172px);
  }

  .main-hero__title {
    font-size: clamp(1.62rem, 6.7vw, 2.1rem);
  }

  .main-hero__description {
    font-size: 0.9rem;
    line-height: 1.55;
  }

  .main-hero__trust {
    display: grid;
    gap: 3px;
    margin-top: -12px;
    margin-bottom: 17px;
    font-size: 0.76rem;
  }

  .main-product__features p br {
    display: none;
  }

  .video-modal {
    padding: 18px;
  }

  .video-modal__dialog {
    padding: 46px 10px 10px;
    border-radius: 8px;
  }

  .video-modal__close {
    top: 4px;
    right: 5px;
  }
}

/* Mobile-only density and type scale */
@media (max-width: 767px) {
  :root {
    --page-gutter: 18px;
  }

  .site-header__inner {
    min-height: 76px;
  }

  .site-logo img {
    width: 218px;
    max-width: calc(100vw - 104px);
    height: auto;
  }

  .site-nav-toggle {
    width: 46px;
    height: 46px;
    padding: 10px;
    align-self: center;
  }

  .site-nav {
    max-height: calc(100dvh - 76px);
  }

  .main-hero {
    height: clamp(560px, 82svh, 640px);
    min-height: 560px;
  }

  .main-hero__content {
    padding-top: clamp(300px, 41svh, 338px);
    padding-bottom: 68px;
  }

  .main-hero__slide:nth-child(1) .main-hero__content,
  .main-hero__slide:nth-child(3) .main-hero__content {
    padding-top: clamp(350px, 48svh, 388px);
  }

  .main-hero__heading {
    top: clamp(112px, 15svh, 136px);
  }

  .main-hero__slide:nth-child(1) .main-hero__heading {
    top: clamp(104px, 14svh, 126px);
  }

  .main-hero__slide:nth-child(3) .main-hero__heading {
    top: clamp(118px, 16svh, 142px);
  }

  .main-hero__slide:nth-child(1),
  .main-hero__slide:nth-child(2) {
    background-size: auto 96%;
    background-repeat: no-repeat;
  }

  .main-hero__eyebrow {
    margin-bottom: 8px;
  }

  .main-hero__title {
    margin-bottom: 12px;
    font-size: clamp(2rem, 8.7vw, 2.55rem);
    font-weight: 700;
    line-height: 1.14;
  }

  .main-hero__description {
    margin-bottom: 16px;
    font-size: .9rem;
    line-height: 1.5;
  }

  .main-hero__trust {
    margin: -4px 0 16px;
    font-size: .78rem;
    line-height: 1.5;
  }

  .main-hero__actions {
    gap: 8px;
  }

  .main-button {
    min-height: 46px;
    padding: 9px 17px;
    font-size: .94rem;
  }

  .main-hero__image-notice {
    margin-top: 16px;
    font-size: .78rem;
    line-height: 1.5;
  }

  .main-hero__controls {
    bottom: clamp(42px, 8svh, 60px);
  }

  .main-hero__pagination button {
    width: 30px;
  }

  .main-trust article,
  .main-trust article:nth-child(2) {
    min-height: 108px;
    padding: 14px 9px;
    gap: 7px;
  }

  .main-trust img {
    width: 30px;
    height: 30px;
  }

  .main-trust h3 {
    font-size: .9rem;
    line-height: 1.25;
  }

  .main-trust p {
    font-size: .72rem;
    line-height: 1.4;
  }

  .main-problem,
  .main-product,
  .main-patent,
  .main-other,
  .main-video {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .main-section-heading h2,
  .main-video__heading h2,
  .main-patent h2,
  .main-brand h2 {
    font-size: clamp(1.85rem, 7.8vw, 2.2rem);
    font-weight: 700;
  }

  .main-section-heading {
    gap: 14px;
    margin-bottom: 26px;
  }

  .main-product__content {
    padding: 30px 20px 34px;
  }

  .main-product__content h3 {
    font-size: 1.75rem;
  }

  .main-product__features li {
    padding-block: 12px;
  }
}