/* ===========================
   CSS Custom Properties
   =========================== */
:root {
  --color-primary:       #1A3F6F;
  --color-primary-light: #E8F0FB;
  --color-text:          #1A1A1A;
  --color-text-sub:      #595959;
  --color-border:        #D4D4D4;
  --color-bg:            #FFFFFF;
  --color-bg-alt:        #F5F5F5;
  --color-accent:        #2B6CB0;

  --font-base: "Noto Sans JP", "游ゴシック体", YuGothic, "Yu Gothic", sans-serif;

  --container-max:          960px;
  --section-padding:        5rem;
  --section-padding-mobile: 3rem;
}

/* ===========================
   Reset & Base
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

/* ===========================
   Container
   =========================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===========================
   Section Title
   =========================== */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2.5rem;
  padding-bottom: 0.75rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.section-title--center {
  text-align: center;
}

.section-title--center::after {
  left: 50%;
  transform: translateX(-50%);
}

/* ===========================
   Badge
   =========================== */
.badge {
  display: inline-block;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

/* ===========================
   Header
   =========================== */
.site-header {
  background-color: var(--color-primary);
  color: #fff;
  height: 60px;
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.site-header__logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.site-header__rep {
  font-size: 0.875rem;
}

/* ===========================
   Hero
   =========================== */
.hero {
  background-color: var(--color-primary-light);
  padding: var(--section-padding) 0;
}

.hero__badge {
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 1.5rem;
  max-width: 640px;
}

.hero__sub {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 640px;
}

.hero__meta {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  border-left: 3px solid var(--color-primary);
  padding-left: 0.75rem;
}

/* ===========================
   About
   =========================== */
.about {
  padding: var(--section-padding) 0;
  background-color: var(--color-bg);
}

.about__body {
  max-width: 720px;
}

.about__text + .about__text {
  margin-top: 1rem;
}

/* ===========================
   Services
   =========================== */
.services {
  padding: var(--section-padding) 0;
  background-color: var(--color-bg-alt);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.service-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.service-card__number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 0.375rem;
}

.service-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.625rem;
}

.service-card__target {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 3px;
  padding: 0.125rem 0.5rem;
  margin-bottom: 1rem;
  align-self: flex-start;
}

.service-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 1rem;
  flex: 1;
}

.service-card__price {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  border-top: 1px solid var(--color-border);
  padding-top: 0.75rem;
  line-height: 1.7;
}

.service-card__price .note {
  font-size: 0.8125rem;
}

/* ===========================
   Features
   =========================== */
.features {
  padding: var(--section-padding) 0;
  background-color: var(--color-bg);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.feature-item {
  text-align: center;
}

.feature-item__icon {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.feature-item__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.feature-item__desc {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  line-height: 1.7;
}

/* ===========================
   Business Info
   =========================== */
.business-info {
  padding: var(--section-padding) 0;
  background-color: var(--color-primary-light);
}

.business-info__table {
  max-width: 560px;
}

.business-info__row {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  padding: 0.875rem 0;
}

.business-info__row:first-child {
  border-top: 1px solid var(--color-border);
}

.business-info__label {
  font-weight: 700;
  color: var(--color-primary);
  min-width: 140px;
  flex-shrink: 0;
}

.business-info__value {
  color: var(--color-text);
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  background-color: var(--color-primary);
  color: #fff;
  padding: 2rem 0;
  text-align: center;
}

.site-footer__logo {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.site-footer__copy {
  font-size: 0.8125rem;
  opacity: 0.8;
}

/* ===========================
   Responsive (max-width: 768px)
   =========================== */
@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }

  .section-title {
    font-size: 1.375rem;
    margin-bottom: 2rem;
  }

  .hero {
    padding: var(--section-padding-mobile) 0;
  }

  .hero__title {
    font-size: 1.625rem;
  }

  .about {
    padding: var(--section-padding-mobile) 0;
  }

  .services {
    padding: var(--section-padding-mobile) 0;
  }

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

  .features {
    padding: var(--section-padding-mobile) 0;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .business-info {
    padding: var(--section-padding-mobile) 0;
  }

  .business-info__row {
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem 0;
  }

  .business-info__label {
    min-width: unset;
    font-size: 0.875rem;
  }
}

/* ===========================
   Print
   =========================== */
@media print {
  .site-header {
    background-color: #fff !important;
    color: var(--color-primary) !important;
    border-bottom: 2px solid var(--color-primary);
  }

  .hero {
    background-color: #fff !important;
  }

  .business-info {
    background-color: #fff !important;
  }

  .site-footer {
    background-color: #fff !important;
    color: var(--color-text) !important;
    border-top: 1px solid var(--color-border);
  }

  .service-card {
    break-inside: avoid;
  }
}