:root {
  --navy: #0f5f87;
  --navy-deep: #07384d;
  --blue: #2aa7c8;
  --gold: #2f9d68;
  --gold-dark: #1d7b4f;
  --kakao: #fee500;
  --paper: #eef9f3;
  --mist: #eaf8fb;
  --text: #213944;
  --muted: #5f7680;
  --line: #cfe8ee;
  --white: #ffffff;
  --shadow: 0 18px 48px rgba(15, 95, 135, 0.15);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(180deg, #f5fcff 0%, var(--white) 34%, #f1fbf5 100%);
  font-family: "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 18px;
  line-height: 1.65;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 5vw, 72px);
  background: rgba(248, 253, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-logo {
  width: clamp(168px, 16vw, 230px);
  height: auto;
  object-fit: contain;
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: #235165;
  font-size: 16px;
  font-weight: 800;
}

.desktop-nav a {
  padding: 10px 0;
}

.desktop-nav a:hover {
  color: var(--gold-dark);
}

.header-call {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  color: var(--white);
  background: var(--gold);
  border-radius: 8px;
  font-weight: 900;
  white-space: nowrap;
}

.hero {
  min-height: 720px;
  display: flex;
  align-items: center;
  padding: 92px clamp(20px, 6vw, 88px) 124px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(7, 56, 77, 0.9), rgba(15, 95, 135, 0.58), rgba(15, 95, 135, 0.18)),
    url("assets/hero-sea-mountain-v2.webp") center/cover;
}

.hero-content {
  max-width: 790px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 16px;
  font-weight: 900;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-actions a.social-login {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px 0 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.header-actions a.social-login span {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 900;
}

.header-actions a.social-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.16);
}

.header-actions a.naver-login {
  color: var(--white);
  background: #03c75a;
}

.header-actions a.naver-login span {
  color: #03c75a;
  background: var(--white);
}

.header-actions a.naver-login:hover {
  background: #02b351;
}

.header-actions a.kakao-login {
  color: #191919;
  background: #fee500;
  border-color: #ecd200;
}

.header-actions a.kakao-login span {
  color: #fee500;
  background: #191919;
}

.header-actions a.kakao-login:hover {
  background: #f4d900;
}

.hero h1,
h2,
h3 {
  margin: 0;
  color: var(--navy);
  line-height: 1.22;
  letter-spacing: 0;
}

.hero h1 {
  color: var(--white);
  font-size: clamp(46px, 7vw, 82px);
  font-weight: 900;
}

.hero-copy {
  max-width: 660px;
  margin: 24px 0 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.55;
}

.hero-actions,
.consult-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.btn,
.consult-form button,
.product-card a,
.schedule-list a {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 0;
  border-radius: 8px;
  font-weight: 900;
  cursor: pointer;
}

.btn-primary,
.consult-form button {
  color: var(--white);
  background: var(--gold);
}

.btn-primary:hover,
.consult-form button:hover {
  background: var(--gold-dark);
}

.btn-light {
  color: var(--navy);
  background: var(--white);
}

.btn-kakao {
  color: #191600;
  background: var(--kakao);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.trust-strip span {
  padding: 8px 13px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  min-height: 54px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(47, 157, 104, 0.18);
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 96px 20px;
}

.reason-section {
  max-width: none;
  margin-top: 34px;
  background: var(--mist);
}

.reason-section > * {
  max-width: 1180px;
  margin-right: auto;
  margin-left: auto;
}

.section-head {
  max-width: 710px;
  margin-bottom: 34px;
}

.section-head-row {
  max-width: none;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

h2 {
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 900;
}

h3 {
  font-size: 24px;
  font-weight: 900;
}

.section-head p:last-child {
  margin: 10px 0 0;
  color: var(--muted);
}

.category-pills,
.partners {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.category-pills span,
.partners span {
  padding: 9px 13px;
  color: var(--navy);
  background: var(--paper);
  border: 1px solid #ccebdd;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
}

.product-grid,
.reason-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.featured-product {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.1fr);
  gap: 0;
  overflow: hidden;
  margin-bottom: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 44px rgba(15, 95, 135, 0.12);
}

.featured-product > img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
}

.featured-product-content {
  padding: clamp(26px, 4vw, 42px);
}

.featured-product-content h3 {
  margin-top: 4px;
  font-size: clamp(28px, 3.5vw, 42px);
  line-height: 1.25;
}

.featured-product-content p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 20px;
}

.product-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 24px 0 0;
}

.product-facts div {
  padding: 14px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.product-facts dt {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.product-facts dd {
  margin: 4px 0 0;
  color: var(--navy);
  font-size: 20px;
  font-weight: 800;
}

.featured-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.reason-grid article,
.product-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(15, 95, 135, 0.08);
}

.reason-grid article {
  min-height: 248px;
  padding: 26px;
}

.icon {
  display: inline-grid;
  width: 52px;
  height: 52px;
  place-items: center;
  margin-bottom: 18px;
  color: var(--white);
  background: var(--blue);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 900;
}

.reason-grid p,
.product-card p {
  color: var(--muted);
}

.expertise-section {
  padding-top: 82px;
  padding-bottom: 82px;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.expertise-grid article {
  padding: 32px 30px;
}

.expertise-grid article + article {
  border-left: 1px solid var(--line);
}

.expertise-number {
  display: block;
  margin-bottom: 18px;
  color: var(--gold-dark);
  font-size: 18px;
  font-weight: 900;
}

.expertise-grid h3 {
  color: var(--navy-deep);
}

.expertise-grid p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.expertise-summary {
  margin: 28px 0 0;
  padding: 22px 24px;
  color: #244753;
  background: var(--mist);
  border-left: 5px solid var(--gold);
}

.expertise-summary strong {
  display: block;
  margin-bottom: 4px;
  color: var(--navy);
}

.product-card {
  overflow: hidden;
}

.product-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.product-card div {
  padding: 20px;
}

.tag {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 9px;
  color: var(--gold-dark);
  background: #eaf8ef;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
}

.product-card p {
  min-height: 88px;
  margin: 8px 0;
}

.product-card strong {
  display: block;
  margin: 8px 0 16px;
  color: var(--gold-dark);
  font-size: 25px;
  line-height: 1.2;
}

.product-card a,
.schedule-list a {
  width: 100%;
  min-height: 46px;
  color: var(--white);
  background: var(--navy);
}

.schedule-section {
  padding-top: 32px;
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 5px;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.tabs button {
  min-height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: 7px;
  color: var(--navy);
  background: transparent;
  font-weight: 900;
}

.tabs button.active {
  color: var(--white);
  background: var(--navy);
}

.schedule-list {
  display: grid;
  gap: 12px;
}

.schedule-list article {
  display: grid;
  grid-template-columns: 110px 1fr 130px 96px;
  align-items: center;
  gap: 16px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.schedule-list time {
  color: var(--gold-dark);
  font-size: 24px;
  font-weight: 900;
}

.schedule-list span {
  justify-self: start;
  padding: 5px 10px;
  color: var(--navy);
  background: var(--mist);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
}

.review-band {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  min-height: 620px;
  background: var(--navy-deep);
}

.review-photo {
  background: url("https://images.unsplash.com/photo-1488646953014-85cb44e25828?auto=format&fit=crop&w=1200&q=82") center/cover;
}

.review-content {
  align-self: center;
  padding: 70px clamp(24px, 6vw, 80px);
  color: var(--white);
}

.review-content h2 {
  color: var(--white);
}

.reviews {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

blockquote {
  margin: 0;
  padding: 22px;
  color: var(--text);
  background: var(--white);
  border-radius: 8px;
}

blockquote span {
  color: var(--gold);
  font-weight: 900;
}

blockquote p {
  margin: 8px 0 10px;
  font-size: 20px;
}

blockquote cite {
  color: var(--muted);
  font-style: normal;
}

.guide {
  background: var(--white);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.guide-grid a {
  display: grid;
  min-height: 84px;
  place-items: center;
  padding: 13px;
  color: var(--navy);
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 19px;
  font-weight: 900;
  text-align: center;
}

.faq-list {
  margin-top: 34px;
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 22px 46px 22px 4px;
  color: var(--navy-deep);
  font-size: 20px;
  font-weight: 900;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 8px;
  content: "+";
  color: var(--gold-dark);
  font-size: 28px;
  transform: translateY(-50%);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  max-width: 920px;
  margin: -4px 0 0;
  padding: 0 4px 24px;
  color: var(--muted);
  line-height: 1.75;
}

.about {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  align-items: start;
  padding-top: 32px;
}

.about-copy > p {
  margin: 0;
  color: #244753;
  font-size: 24px;
  line-height: 1.75;
}

.license-list {
  display: grid;
  gap: 8px;
  margin: 28px 0;
  padding: 0;
}

.license-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.license-list dt {
  color: var(--navy);
  font-weight: 900;
}

.license-list dd {
  margin: 0;
  color: var(--muted);
}

.consult-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 38px;
  padding: 86px clamp(20px, 6vw, 86px);
  color: var(--white);
  background: linear-gradient(135deg, var(--navy-deep), var(--navy), #1f9870, var(--blue));
}

.consult-info {
  align-self: center;
}

.consult-info h2 {
  color: var(--white);
}

.consult-lead {
  max-width: 520px;
  font-size: 22px;
}

.phone {
  margin: 20px 0 0;
  color: #b8f3de;
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.1;
}

.consult-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 26px;
  color: var(--text);
  background: var(--white);
  border-radius: 8px;
}

.consult-form label {
  display: grid;
  gap: 7px;
  color: var(--navy);
  font-weight: 900;
}

.consult-form .full,
.consult-form button {
  grid-column: 1 / -1;
}

.site-footer {
  padding: 36px clamp(20px, 6vw, 86px) 110px;
  color: #d8eef4;
  background: #062836;
}

.site-footer strong {
  color: var(--white);
  font-size: 22px;
}

.site-footer p {
  margin: 8px 0 0;
}

.mobile-sticky {
  display: none;
}

@media (max-width: 1080px) {
  .desktop-nav {
    display: none;
  }

  .featured-product,
  .product-grid,
  .reason-grid,
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .expertise-grid {
    grid-template-columns: 1fr;
  }

  .expertise-grid article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

}

@media (max-width: 760px) {
  body {
    padding-bottom: 74px;
    font-size: 17px;
  }

  .site-header {
    padding: 10px 14px;
  }

  .header-actions {
    display: none;
  }

  .brand-logo {
    width: 168px;
  }

  .hero {
    min-height: 680px;
    padding: 48px 18px 88px;
    background:
      linear-gradient(180deg, rgba(7, 56, 77, 0.92), rgba(15, 95, 135, 0.68)),
      url("assets/hero-sea-mountain-v2.webp") 65% center/cover;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-copy {
    margin-top: 18px;
    font-size: 20px;
    line-height: 1.5;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 24px;
  }

  .hero-actions .btn {
    width: auto;
    min-width: 0;
    padding-right: 12px;
    padding-left: 12px;
  }

  .hero-actions .btn-kakao {
    grid-column: 1 / -1;
  }

  .consult-buttons .btn {
    width: 100%;
  }

  .trust-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-top: 24px;
  }

  .trust-strip span {
    display: grid;
    min-height: 48px;
    place-items: center;
    padding: 7px 8px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.35;
    text-align: center;
  }

  .section {
    padding: 72px 16px;
  }

  .reason-section {
    margin-top: 24px;
  }

  .section-head-row,
  .about,
  .review-band,
  .consult-section {
    grid-template-columns: 1fr;
  }

  .section-head-row {
    align-items: start;
  }

  .product-grid,
  .reason-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .expertise-grid article {
    padding: 26px 4px;
  }

  .featured-product {
    grid-template-columns: 1fr;
  }

  .featured-product > img {
    min-height: 240px;
  }

  .product-facts {
    grid-template-columns: 1fr;
  }

  .featured-actions .btn {
    width: 100%;
  }

  .product-card p {
    min-height: auto;
  }

  .schedule-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .schedule-list a {
    width: 100%;
  }

  .review-photo {
    min-height: 260px;
  }

  .review-content {
    padding: 52px 18px;
  }

  .about-copy > p {
    font-size: 20px;
  }

  .license-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .consult-section {
    padding: 68px 16px;
  }

  .consult-form {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .mobile-sticky {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 40;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    background: var(--white);
    border-top: 1px solid var(--line);
    box-shadow: 0 -10px 30px rgba(15, 95, 135, 0.15);
  }

  .mobile-sticky a {
    display: grid;
    min-height: 66px;
    place-items: center;
    color: var(--navy);
    font-size: 14px;
    font-weight: 900;
    text-align: center;
  }

  .mobile-sticky a:nth-child(2) {
    background: var(--kakao);
  }

  .mobile-sticky a:nth-child(3) {
    color: var(--white);
    background: #03c75a;
  }

  .mobile-sticky a:nth-child(4) {
    color: #191919;
    background: #fee500;
  }
}