:root {
  --color-main: #1a3a5c;
  --color-main-deep: #0e2235;
  --color-main-mid: #233f5d;
  --color-accent: #e8601c;
  --color-base: #ffffff;
  --color-surface: #f2f4f6;
  --color-text: #171717;
  --color-subtext: #4e5965;
  --color-line: rgba(26, 58, 92, 0.14);
  --shadow-soft: 0 14px 30px rgba(16, 38, 60, 0.06);
  --shadow-strong: 0 20px 40px rgba(16, 38, 60, 0.14);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --container: min(1120px, calc(100vw - 32px));
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  color: var(--color-text);
  background: var(--color-base);
  line-height: 1.75;
}

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

h1,
h2,
h3,
p,
ul,
dl {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.demo-banner {
  position: sticky;
  top: 0;
  z-index: 30;
  background: #fff3ea;
  color: #71320d;
  border-bottom: 1px solid #f1c7ad;
  padding: 12px 16px;
  font-size: 0.94rem;
}

.demo-banner p + p {
  margin-top: 4px;
}

.site-header {
  position: sticky;
  top: 72px;
  z-index: 20;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(26, 58, 92, 0.08);
  backdrop-filter: blur(12px);
}

.header-inner,
.footer-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
}

.brand-mark {
  width: 10px;
  height: 36px;
  border-radius: 2px;
  background: var(--color-accent);
}

.header-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--color-subtext);
  font-size: 0.95rem;
}

.hero {
  padding: 56px 0 0;
  background:
    linear-gradient(135deg, var(--color-main-deep) 0%, var(--color-main) 58%, var(--color-main-mid) 100%);
  color: var(--color-base);
}

.hero-grid,
.recruit-grid,
.about-grid,
.area-grid,
.contact-grid,
.footer-inner {
  display: grid;
  gap: 28px;
}

.hero-grid {
  grid-template-columns: 1.18fr 0.82fr;
  align-items: stretch;
  padding-bottom: 56px;
}

.hero-copy {
  padding: 16px 0;
}

.section-label {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 2px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-main);
  background: rgba(26, 58, 92, 0.07);
}

.hero-label,
.section-label-invert {
  color: var(--color-base);
  background: rgba(255, 255, 255, 0.1);
}

.hero h1,
.stats-header h2,
.section-heading h2 {
  font-weight: 900;
  line-height: 1.22;
}

.hero h1 {
  margin-top: 20px;
  font-size: clamp(2.15rem, 5vw, 3.85rem);
  max-width: 10.5em;
  letter-spacing: 0.01em;
}

.hero-lead {
  margin-top: 18px;
  max-width: 40rem;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.04rem;
}

.hero-points {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}

.hero-points li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
}

.hero-points span {
  color: rgba(255, 255, 255, 0.74);
}

.hero-points strong {
  font-weight: 700;
}

.cta-row,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 4px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-base);
  box-shadow: 0 10px 20px rgba(232, 96, 28, 0.16);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--color-base);
}

.contact-actions .button-secondary {
  background: var(--color-main);
  border-color: transparent;
}

.hero-card,
.stats-grid article,
.reasons-grid article,
.card-grid article,
.works-grid article,
.recruit-box,
.info-table,
.about-note,
.area-panel,
.contact-card {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.hero-card {
  background: rgba(255, 255, 255, 0.985);
  color: var(--color-text);
  padding: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow-strong);
}

.hero-card-kicker,
.recruit-box-label,
.about-note-label {
  color: var(--color-accent);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.hero-card h2,
.recruit-box h3,
.about-note h3 {
  margin-top: 12px;
  font-size: 1.7rem;
  line-height: 1.35;
}

.hero-card-summary {
  margin-top: 14px;
  color: var(--color-subtext);
}

.summary-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.summary-list div {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
}

.summary-list dt {
  font-size: 0.82rem;
  color: var(--color-subtext);
}

.summary-list dd {
  margin: 6px 0 0;
  font-weight: 700;
}

.hero-card-cta {
  margin-top: 18px;
}

.hero-card-cta .button-secondary,
.hero-card-cta .button-primary {
  width: 100%;
}

.stats-strip {
  padding: 32px 0 0;
}

.stats-header {
  max-width: 780px;
}

.stats-header h2,
.section-heading h2 {
  margin-top: 14px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.stats-grid,
.card-grid,
.works-grid,
.reasons-grid {
  display: grid;
  gap: 20px;
  margin-top: 24px;
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stats-grid article {
  background: var(--color-main);
  color: var(--color-base);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.stats-grid article::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent);
}

.stat-label {
  display: block;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
}

.stat-value {
  display: block;
  margin-top: 12px;
  font-family: "Montserrat", "Arial Black", sans-serif;
  font-size: clamp(1.55rem, 4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.2;
}

.stats-note {
  margin-top: 10px;
  color: var(--color-subtext);
  font-size: 0.88rem;
}

.section {
  padding: 80px 0;
}

.section-light {
  background: var(--color-surface);
}

.section-heading {
  max-width: 760px;
}

.section-heading.left {
  max-width: none;
}

.reasons-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 28px;
}

.reasons-grid article {
  background: var(--color-base);
  padding: 26px;
  border: 1px solid var(--color-line);
}

.reason-number,
.work-label {
  display: inline-block;
  font-family: "Montserrat", "Arial Black", sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.reasons-grid h3,
.card-grid h3,
.works-grid h3,
.contact-card h3 {
  margin-top: 12px;
  font-size: 1.18rem;
}

.reasons-grid p,
.card-grid p,
.works-grid p,
.contact-card li,
.area-copy,
.about-note p,
.recruit-box p,
.contact-copy {
  margin-top: 10px;
  color: var(--color-subtext);
}

.service-grid,
.works-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid article,
.works-grid article {
  background: var(--color-base);
  padding: 24px;
  border: 1px solid var(--color-line);
}

.works-grid article {
  position: relative;
  overflow: hidden;
}

.works-grid article::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg, rgba(26, 58, 92, 0.04), rgba(26, 58, 92, 0)),
    linear-gradient(90deg, rgba(232, 96, 28, 0.9), rgba(232, 96, 28, 0.1));
  height: 7px;
}

.recruit-section {
  background: linear-gradient(135deg, #132c45, #203a57);
  color: var(--color-base);
}

.recruit-grid {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: stretch;
}

.recruit-copy {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.84);
}

.check-list,
.contact-list {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}

.check-list li,
.contact-list li {
  position: relative;
  padding-left: 18px;
}

.check-list li::before,
.contact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-accent);
}

.recruit-box {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 28px;
}

.about-grid,
.contact-grid {
  grid-template-columns: 1.05fr 0.95fr;
  align-items: start;
}

.info-table {
  display: grid;
  grid-template-columns: minmax(110px, 160px) 1fr;
  background: var(--color-base);
  border: 1px solid var(--color-line);
  padding: 10px 24px;
}

.info-table div {
  display: contents;
}

.info-table dt,
.info-table dd {
  padding: 16px 0;
  border-bottom: 1px solid rgba(26, 58, 92, 0.09);
}

.info-table dt {
  font-weight: 700;
}

.info-table dd {
  margin: 0;
  color: var(--color-subtext);
}

.about-note,
.contact-card {
  background: var(--color-base);
  padding: 28px;
  border: 1px solid var(--color-line);
}

.area-grid {
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.area-panel {
  background: var(--color-main);
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.area-chip {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-base);
  text-align: center;
  font-weight: 700;
}

.contact-section {
  padding-bottom: 80px;
}

.site-footer {
  background: var(--color-main-deep);
  color: rgba(255, 255, 255, 0.88);
}

.footer-inner {
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: 88px;
}

.footer-name {
  font-weight: 700;
}

.footer-note {
  margin-top: 6px;
  font-size: 0.92rem;
}

.footer-link {
  color: var(--color-base);
  font-weight: 700;
}

@media (max-width: 960px) {
  .hero-grid,
  .stats-grid,
  .reasons-grid,
  .service-grid,
  .works-grid,
  .recruit-grid,
  .about-grid,
  .area-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    top: 88px;
  }

  .area-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .site-header {
    position: static;
  }

  .header-inner,
  .footer-inner {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 14px 0;
  }

  .hero {
    padding-top: 28px;
  }

  .section {
    padding: 48px 0;
  }

  .button {
    width: 100%;
  }

  .hero-card,
  .recruit-box,
  .about-note,
  .contact-card,
  .info-table,
  .stats-grid article,
  .reasons-grid article,
  .card-grid article,
  .works-grid article {
    padding-left: 22px;
    padding-right: 22px;
  }

  .info-table {
    grid-template-columns: 1fr;
    padding-top: 6px;
    padding-bottom: 6px;
  }

  .info-table dt {
    padding-bottom: 4px;
    border-bottom: none;
  }

  .info-table dd {
    padding-top: 0;
  }

  .area-panel {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .demo-banner {
    font-size: 0.88rem;
  }

  .area-panel {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 2rem;
  }
}