:root {
  --color-bg: #f5f8fc;
  --color-surface: #ffffff;
  --color-tint: #eef3fa;
  --color-navy: #0f2747;
  --color-navy-deep: #081a30;
  --color-blue: #1e5aa8;
  --color-blue-dark: #143f7a;
  --color-blue-light: #e6eefa;
  --color-text: #16233c;
  --color-text-light: #5c6a80;
  --color-border: #dde4f0;
  --font-base: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  --max-width: 1080px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
}

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

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

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

.section-label {
  letter-spacing: 0.2em;
  color: var(--color-blue);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-title {
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-navy);
}

.center {
  text-align: center;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-blue);
  color: #fff;
  border-radius: 999px;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  font-weight: 700;
  transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

.btn:hover {
  background: var(--color-blue-dark);
  transform: translateY(-2px);
}

.btn--small {
  padding: 10px 24px;
  font-size: 0.85rem;
}

.btn--hero {
  background: #ffffff;
  color: var(--color-navy);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.btn--hero:hover {
  background: var(--color-blue-light);
  color: var(--color-navy-deep);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--color-blue);
  font-weight: 700;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 0.9rem;
  color: var(--color-text);
  position: relative;
}

.nav a:hover {
  color: var(--color-blue);
}

/* Hero */
.hero {
  min-height: 86vh;
  display: flex;
  align-items: center;
  background: linear-gradient(150deg, var(--color-navy) 0%, var(--color-navy-deep) 55%, #061223 100%);
  color: #fff;
}

.hero__inner {
  text-align: center;
  padding-top: 80px;
  padding-bottom: 80px;
}

.hero__sub {
  letter-spacing: 0.2em;
  color: #9fc0ea;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero__title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 24px;
  color: #ffffff;
}

.hero__text {
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 36px;
}

/* Concerns (お悩み) */
.concerns {
  padding: 100px 0;
}

.concerns__lead {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 48px;
}

.concerns__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.concern-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 32px 28px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.concern-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(15, 39, 71, 0.12);
  border-color: var(--color-blue-light);
}

.concern-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-blue-light);
  color: var(--color-blue-dark);
  margin-bottom: 18px;
}

.concern-card__icon svg {
  width: 24px;
  height: 24px;
}

.concern-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--color-navy);
}

.concern-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Flow (施術の流れ) */
.flow {
  background: var(--color-tint);
  padding: 100px 0;
}

.flow__lead {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 56px;
}

.flow__steps {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.flow-step {
  flex: 1 1 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 32px 22px;
  text-align: center;
  position: relative;
}

.flow-step__num {
  display: block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  margin-bottom: 14px;
}

.flow-step__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-navy);
  color: #fff;
}

.flow-step__icon svg {
  width: 26px;
  height: 26px;
}

.flow-step h3 {
  font-size: 1rem;
  color: var(--color-navy);
  margin-bottom: 10px;
  line-height: 1.5;
}

.flow-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.flow-arrow {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  width: 28px;
}

.flow-arrow svg {
  width: 22px;
  height: 22px;
}

/* About */
.about {
  padding: 100px 0;
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about__text p {
  color: var(--color-text-light);
}

.about__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-blue), var(--color-navy));
}

/* Menu (施術メニュー) */
.menu {
  background: var(--color-tint);
  padding: 100px 0;
}

.menu__lead {
  text-align: center;
  color: var(--color-text-light);
  margin-bottom: 48px;
}

.menu__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.menu-card {
  position: relative;
  background: var(--color-surface);
  border-radius: 14px;
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(15, 39, 71, 0.08);
  transition: transform 0.3s ease;
}

.menu-card:hover {
  transform: translateY(-6px);
}

.menu-card--featured {
  border: 2px solid var(--color-blue);
  box-shadow: 0 12px 28px rgba(15, 39, 71, 0.18);
}

.menu-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-navy);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 6px 18px;
  border-radius: 999px;
  white-space: nowrap;
}

.menu-card h3 {
  font-size: 1.1rem;
  margin-bottom: 14px;
  color: var(--color-navy);
}

.menu-card__price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-blue-dark);
  margin-bottom: 14px;
}

.menu-card__price span {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.menu-card__desc {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Voice */
.voice {
  padding: 100px 0;
}

.voice__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.voice-card {
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
  background: var(--color-surface);
}

.voice-card__text {
  color: var(--color-text-light);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.voice-card__name {
  font-size: 0.85rem;
  color: var(--color-blue-dark);
  font-weight: 700;
  text-align: right;
}

/* Access */
.access {
  background: var(--color-tint);
  padding: 100px 0;
}

.access__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.access__list dt {
  font-weight: 700;
  color: var(--color-blue-dark);
  margin-top: 16px;
}

.access__list dd {
  color: var(--color-text-light);
}

.access__map {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(15, 39, 71, 0.12);
}

.access__map iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  filter: saturate(0.9) contrast(0.95);
}

/* Contact */
.contact {
  text-align: center;
  padding: 100px 24px;
}

.contact__lead {
  color: var(--color-text-light);
  margin-bottom: 48px;
}

.contact-form {
  max-width: 720px;
  margin: 0 auto;
  text-align: left;
  background: var(--color-surface);
  border-radius: 16px;
  padding: 48px;
  box-shadow: 0 12px 40px rgba(15, 39, 71, 0.1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.required {
  display: inline-block;
  font-size: 0.65rem;
  color: #fff;
  background: var(--color-blue);
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.05em;
  margin-left: 4px;
  vertical-align: middle;
}

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 14px 16px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  text-align: center;
  margin-top: 12px;
}

.btn--submit {
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 16px 56px;
  font-size: 1rem;
  background: linear-gradient(135deg, var(--color-blue), var(--color-navy));
  box-shadow: 0 8px 24px rgba(15, 39, 71, 0.3);
}

.btn--submit:hover {
  background: linear-gradient(135deg, var(--color-blue-dark), var(--color-navy-deep));
  box-shadow: 0 10px 28px rgba(15, 39, 71, 0.4);
}

/* SNS */
.sns {
  padding: 90px 0 100px;
  background: var(--color-tint);
}

.sns__inner {
  text-align: center;
}

.sns__lead {
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.sns__buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.sns-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.sns-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
}

.sns-btn__icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.sns-btn--instagram:hover {
  border-color: var(--color-blue);
  color: var(--color-blue-dark);
}

.sns-btn--line:hover {
  border-color: #06c755;
  color: #06c755;
}

/* Footer */
.footer {
  background: var(--color-navy-deep);
  color: #fff;
  text-align: center;
  padding: 28px 0;
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .hero__title {
    font-size: 2rem;
  }

  .about__inner,
  .access__inner {
    grid-template-columns: 1fr;
    padding-top: 0;
  }

  .concerns,
  .flow,
  .about,
  .menu,
  .voice,
  .access {
    padding: 60px 0;
  }

  .about__image,
  .access__map {
    order: -1;
  }

  .menu-card--featured {
    margin-top: 8px;
  }

  .flow__steps {
    flex-direction: column;
  }

  .flow-arrow {
    width: auto;
    height: 28px;
  }

  .flow-arrow svg {
    transform: rotate(90deg);
  }

  .contact-form {
    padding: 32px 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .btn--submit {
    width: 100%;
    padding: 16px 24px;
  }

  .sns__buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .sns-btn {
    justify-content: center;
  }
}