:root {
  --sea: #102a33;
  --sea-mid: #1b3d48;
  --mist: #5f8f93;
  --fog: #e7eef0;
  --paper: #f7f8f6;
  --gold: #b8945a;
  --ink: #1c2426;
  --muted: #536166;
  --line: rgba(16, 42, 51, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

#home,
#about,
#service,
#contact {
  scroll-margin-top: 84px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.75;
  letter-spacing: 0.02em;
}

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

a {
  color: var(--sea-mid);
  text-decoration: none;
}

a:hover {
  color: var(--mist);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--sea);
  color: #fff;
  padding: 8px 12px;
  z-index: 20;
}

.skip-link:focus {
  top: 10px;
}

.wrap {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #fff;
  border-bottom: 2px solid var(--sea);
}

.header-bar {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--sea);
}

.logo img {
  width: 46px;
  height: 46px;
  object-fit: cover;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
}

.logo b {
  display: block;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  font-weight: 650;
}

.logo small {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.menu {
  display: flex;
  gap: 0;
}

.menu a {
  padding: 10px 16px;
  font-size: 0.88rem;
  letter-spacing: 0.16em;
  color: var(--sea);
  border-left: 1px solid var(--line);
}

.menu a:first-child {
  border-left: 0;
}

.menu a:hover {
  background: var(--fog);
  color: var(--sea);
}

.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
}

.menu-btn i {
  display: block;
  width: 16px;
  height: 2px;
  margin: 5px auto;
  background: var(--sea);
}

.hero {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  min-height: 88vh;
}

.hero-panel {
  background: var(--sea);
  color: #fff;
  padding: 88px 56px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 88vh;
}

.mark {
  margin: 0 0 14px;
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.mark.light {
  color: #d7c39a;
}

h1,
h2,
h3 {
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", sans-serif;
  font-weight: 550;
  letter-spacing: 0.06em;
  line-height: 1.45;
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(1.9rem, 4vw, 3rem);
}

.hero p {
  margin: 0 0 28px;
  max-width: 460px;
  color: rgba(255, 255, 255, 0.88);
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 0;
  cursor: pointer;
  font: inherit;
  letter-spacing: 0.08em;
}

.btn.solid {
  background: var(--mist);
  color: #fff;
}

.btn.solid:hover {
  background: #4e7c80;
  color: #fff;
}

.btn.line {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.btn.line:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.about,
.service,
.contact,
.legal {
  padding: 92px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.about-photo img {
  width: 100%;
  height: 460px;
  object-fit: cover;
}

.about-photo figcaption {
  margin: 0;
  padding: 12px 14px;
  background: var(--sea);
  color: #fff;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.about-copy h2,
.block-head h2,
.contact h2,
.steps h2,
.legal h2 {
  margin: 0 0 16px;
  font-size: clamp(1.6rem, 2.6vw, 2.15rem);
  color: var(--sea);
}

.facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.facts li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  padding-left: 18px;
  position: relative;
}

.facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15em;
  width: 7px;
  height: 7px;
  background: var(--mist);
}

.block-head {
  max-width: 680px;
  margin-bottom: 36px;
}

.block-head p:last-child,
.lead,
.about-copy p {
  color: var(--muted);
}

.row {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 0;
  margin-bottom: 22px;
  background: #fff;
  border: 1px solid var(--line);
}

.row.reverse {
  grid-template-columns: 0.85fr 1.15fr;
}

.row.reverse img {
  order: 2;
}

.row img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.row div {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.row span {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.row h3 {
  margin: 6px 0 8px;
  font-size: 1.25rem;
  color: var(--sea);
}

.row p {
  margin: 0;
  color: var(--muted);
}

.note {
  margin-top: 12px !important;
  font-size: 0.82rem;
  color: var(--mist) !important;
}

.steps {
  background: var(--sea);
  color: #fff;
  padding: 72px 0;
}

.steps h2 {
  color: #fff;
  margin-bottom: 28px;
}

.steps ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.steps li {
  border-top: 2px solid var(--mist);
  padding-top: 16px;
}

.steps p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.92rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: start;
}

form,
.aside-card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 28px;
}

.aside img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

label {
  display: block;
  margin: 0 0 6px;
  font-size: 0.86rem;
}

input,
select,
textarea {
  width: 100%;
  margin-bottom: 14px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  font: inherit;
  color: var(--ink);
  border-radius: 0;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.agree {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 6px 0 16px;
  font-size: 0.86rem;
  color: var(--muted);
}

.agree input {
  width: auto;
  margin: 5px 0 0;
}

.status,
.tiny {
  font-size: 0.8rem;
  color: var(--muted);
}

.aside-card {
  border-top: 0;
}

.aside-card h3 {
  margin: 0 0 10px;
  color: var(--sea);
}

.disclaimer,
.legal article {
  background: var(--fog);
  padding: 24px;
  color: var(--muted);
  font-size: 0.9rem;
}

.disclaimer {
  margin-top: 28px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.legal h3 {
  color: var(--sea);
  font-size: 1rem;
}

.site-footer {
  background: var(--sea-mid);
  color: rgba(255, 255, 255, 0.86);
  padding: 36px 0 22px;
}

.footer-bar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.footer-bar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.site-footer a {
  color: #fff;
}

.copy {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.8rem;
}

@media (max-width: 900px) {
  .menu-btn {
    display: inline-block;
  }

  .menu {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    border-bottom: 1px solid var(--line);
  }

  .menu.is-open {
    display: flex;
  }

  .menu a {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .hero,
  .about-grid,
  .row,
  .row.reverse,
  .steps ol,
  .contact-grid,
  .two-col,
  .footer-bar {
    grid-template-columns: 1fr;
  }

  .row.reverse img {
    order: 0;
  }

  .hero-panel {
    padding: 56px 24px;
  }

  .hero-photo img {
    min-height: 320px;
  }

  .about-photo img,
  .row img {
    height: 220px;
  }
}