:root {
  --bg: #f4f7fa;
  --surface: #ffffff;
  --text: #132138;
  --muted: #4f617d;
  --line: #d9e3ef;
  --primary: #0f6ccf;
  --primary-dark: #0a4f99;
  --accent: #00a3a3;
  --radius: 18px;
  --shadow: 0 20px 40px rgba(13, 36, 72, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Zen Kaku Gothic New", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 90% -10%, rgba(0, 163, 163, 0.25), transparent 42%),
    radial-gradient(circle at -5% 18%, rgba(15, 108, 207, 0.22), transparent 38%),
    var(--bg);
  line-height: 1.7;
}

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

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
  background: rgba(244, 247, 250, 0.92);
  border-bottom: 1px solid rgba(19, 33, 56, 0.08);
}

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

.logo {
  font: 800 1.5rem/1 "Barlow", sans-serif;
  letter-spacing: 0.03em;
}

.nav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.nav a {
  font-weight: 700;
  font-size: 0.95rem;
}

.cta-mini {
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  background: var(--text);
  color: #fff;
}

.menu-btn {
  display: none;
  border: none;
  background: transparent;
  font: 700 0.92rem/1 "Barlow", sans-serif;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.5fr 1fr;
  align-items: center;
}

.eyebrow,
.section-kicker {
  margin: 0;
  font: 700 0.8rem/1 "Barlow", sans-serif;
  letter-spacing: 0.16em;
  color: var(--primary);
}

.hero h1 {
  margin: 0.5rem 0 1rem;
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 1.15;
}

.lead {
  max-width: 58ch;
  color: var(--muted);
  font-weight: 500;
}

.hero-actions {
  margin-top: 1.25rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid transparent;
  padding: 0.76rem 1.1rem;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 10px 22px rgba(15, 108, 207, 0.35);
}

.btn-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.85);
}

.hero-stats {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats li {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-stats span {
  font: 800 1.35rem/1 "Barlow", sans-serif;
  color: var(--text);
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.card-label {
  margin: 0;
  font: 700 0.75rem/1 "Barlow", sans-serif;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.hero-card h2 {
  margin: 0.55rem 0;
}

.card-text {
  margin: 0 0 1rem;
  color: var(--muted);
}

.section {
  padding: 72px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.85));
}

.section-title {
  margin: 0.4rem 0 1.2rem;
  font-size: clamp(1.55rem, 3vw, 2.3rem);
}

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

.service-grid article,
.work-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem;
}

.work-type {
  margin: 0;
  font: 700 0.75rem/1 "Barlow", sans-serif;
  letter-spacing: 0.11em;
  color: var(--primary);
}

.work-card h3 {
  margin: 0.55rem 0;
}

.flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}

.flow-list li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  font-weight: 700;
  display: flex;
  gap: 0.7rem;
  align-items: center;
}

.flow-list span {
  font: 800 0.9rem/1 "Barlow", sans-serif;
  color: var(--primary);
}

.company-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 1rem;
}

.company-table {
  margin: 0;
}

.company-table div {
  display: grid;
  grid-template-columns: 120px 1fr;
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0;
}

.company-table dt {
  color: var(--muted);
}

.company-table dd {
  margin: 0;
}

.contact-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form {
  display: grid;
  gap: 0.7rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  font: 500 0.95rem/1.4 "Zen Kaku Gothic New", sans-serif;
  background: #fff;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .hero-grid,
  .company-grid,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .works-grid,
  .flow-list {
    grid-template-columns: 1fr;
  }

  .menu-btn {
    display: block;
  }

  .nav {
    position: fixed;
    top: 74px;
    right: 4vw;
    left: 4vw;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav.open {
    display: flex;
  }
}