/* ===== Design Tokens ===== */
:root {
  --navy: #0f2a4a;
  --navy-dark: #091a30;
  --teal: #1aa7a0;
  --teal-light: #e6f7f6;
  --ink: #1c2733;
  --gray-600: #5b6676;
  --gray-300: #d9dfe7;
  --gray-100: #f4f6f9;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(15, 42, 74, 0.08);
  --shadow-hover: 0 16px 40px rgba(15, 42, 74, 0.14);
  --maxw: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans JP", "Inter", -apple-system, "Hiragino Kaku Gothic ProN", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; line-height: 1.4; font-weight: 700; }
p { margin: 0 0 1em; color: var(--gray-600); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-alt { background: var(--gray-100); }
.section-navy { background: var(--navy); color: var(--white); }
.section-navy p { color: #c7d3e0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--teal);
  margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--teal); display: inline-block; }

.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head h2 { font-size: 32px; letter-spacing: 0.01em; }
.section-head p { margin-top: 14px; font-size: 16px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-300);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--navy); }
.brand .mark {
  width: 36px; height: 36px; border-radius: 8px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px; font-weight: 800;
}
.brand .sub { font-size: 11px; font-weight: 500; color: var(--gray-600); letter-spacing: 0.05em; }

nav.main-nav { display: flex; align-items: center; gap: 36px; }
nav.main-nav a {
  font-size: 14.5px; font-weight: 500; color: var(--ink);
  position: relative; padding: 6px 0;
}
nav.main-nav a.active, nav.main-nav a:hover { color: var(--navy); }
nav.main-nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--teal);
}
.header-cta {
  background: var(--navy); color: #fff !important; padding: 11px 22px;
  border-radius: 999px; font-weight: 700; font-size: 13.5px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .2s;
}
.header-cta:hover { background: var(--teal); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }

/* ===== Hero ===== */
.hero {
  position: relative; color: #fff;
  min-height: 560px; display: flex; align-items: center;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(9,26,48,0.92) 10%, rgba(9,26,48,0.6) 60%, rgba(9,26,48,0.35) 100%);
  z-index: 1;
}
.hero img.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; }
.hero .container { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.3);
  padding: 7px 16px; border-radius: 999px; font-size: 13px; margin-bottom: 24px;
}
.hero h1 { font-size: 44px; max-width: 680px; letter-spacing: 0.01em; }
.hero h1 .accent { color: #4fd8cf; }
.hero p.lead { color: #d6dfe9; font-size: 17px; max-width: 560px; margin-top: 20px; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 999px; font-weight: 700; font-size: 14.5px;
  cursor: pointer; border: 1px solid transparent; transition: all .2s;
}
.btn-primary { background: var(--teal); color: #fff; }
.btn-primary:hover { background: #159790; box-shadow: var(--shadow-hover); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-dark); }

.stats-bar { background: var(--white); border-top: 1px solid var(--gray-300); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 32px 0; }
.stat { text-align: center; }
.stat .num { font-size: 34px; font-weight: 800; color: var(--navy); }
.stat .num span { color: var(--teal); }
.stat .label { font-size: 13px; color: var(--gray-600); margin-top: 4px; }

/* ===== Cards / Grids ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius);
  padding: 32px; transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card .icon-wrap {
  width: 52px; height: 52px; border-radius: 12px; background: var(--teal-light);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--teal);
}
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { font-size: 14.5px; margin-bottom: 0; }

.work-card {
  background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.work-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.work-card .thumb { height: 190px; overflow: hidden; }
.work-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.work-card:hover .thumb img { transform: scale(1.06); }
.work-card .body { padding: 22px; }
.tag {
  display: inline-block; font-size: 11.5px; font-weight: 700; color: var(--navy);
  background: var(--gray-100); padding: 4px 10px; border-radius: 999px; margin-bottom: 12px;
}
.work-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.work-card p { font-size: 13.8px; }
.work-meta { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--gray-600); margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--gray-300); }

.news-row {
  display: flex; gap: 20px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--gray-300);
}
.news-row .date { width: 110px; flex-shrink: 0; font-size: 13px; color: var(--teal); font-weight: 700; }
.news-row .cat { width: 90px; flex-shrink: 0; }
.news-row .title { font-weight: 500; font-size: 15px; }
.news-row .title:hover { color: var(--teal); }
.news-row a.title { display: block; }

.timeline-item { display: flex; gap: 24px; padding-bottom: 36px; position: relative; }
.timeline-item::before {
  content: ""; position: absolute; left: 68px; top: 32px; bottom: -4px; width: 1px; background: var(--gray-300);
}
.timeline-item:last-child::before { display: none; }
.timeline-item .year { width: 68px; flex-shrink: 0; font-weight: 800; color: var(--navy); font-size: 15px; padding-top: 2px; }
.timeline-item .dot { position: absolute; left: 64px; top: 4px; width: 9px; height: 9px; border-radius: 50%; background: var(--teal); }
.timeline-item .content h4 { font-size: 15.5px; margin-bottom: 6px; }
.timeline-item .content p { font-size: 14px; margin-bottom: 0; }

.quote-block {
  display: flex; gap: 32px; align-items: center;
  background: var(--gray-100); border-radius: var(--radius); padding: 36px;
}
.quote-block img { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.quote-block blockquote { margin: 0 0 12px; font-size: 16px; font-style: normal; color: var(--ink); }
.quote-block .who { font-size: 13.5px; color: var(--gray-600); }
.quote-block .who b { color: var(--navy); }

/* ===== Process steps ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 28px 22px; background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); }
.step .num {
  width: 34px; height: 34px; border-radius: 50%; background: var(--navy); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px; margin-bottom: 16px;
}
.step h4 { font-size: 15.5px; margin-bottom: 8px; }
.step p { font-size: 13.5px; margin-bottom: 0; }

/* ===== Contact ===== */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.3fr; gap: 56px; align-items: start; }
.contact-info .info-row { display: flex; gap: 16px; margin-bottom: 26px; }
.contact-info .info-row .icon-wrap {
  width: 42px; height: 42px; border-radius: 10px; background: var(--teal-light);
  display: flex; align-items: center; justify-content: center; color: var(--teal); flex-shrink: 0;
}
.contact-info .info-row h4 { font-size: 14.5px; margin-bottom: 4px; }
.contact-info .info-row p { font-size: 14px; margin-bottom: 0; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13.5px; font-weight: 700; margin-bottom: 8px; color: var(--navy); }
.field label .req { color: #e35151; font-weight: 700; margin-left: 4px; font-size: 11px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 14px; border: 1px solid var(--gray-300); border-radius: 8px;
  font-family: inherit; font-size: 14.5px; color: var(--ink); background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px var(--teal-light); }
.field textarea { resize: vertical; min-height: 130px; }
.contact-form { background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.form-note { font-size: 12.5px; color: var(--gray-600); margin-top: 16px; }
.form-success {
  display: none; align-items: center; gap: 12px; background: var(--teal-light); color: #0e6f68;
  padding: 16px 18px; border-radius: 8px; font-size: 14px; font-weight: 600; margin-bottom: 20px;
}
.form-success.show { display: flex; }

/* ===== CTA band ===== */
.cta-band { text-align: center; }
.cta-band h2 { font-size: 28px; margin-bottom: 14px; }
.cta-band p { max-width: 520px; margin: 0 auto 28px; }

/* ===== Footer ===== */
.site-footer { background: var(--navy-dark); color: #c7d3e0; padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-grid h5 { color: #fff; font-size: 13.5px; margin-bottom: 18px; letter-spacing: 0.04em; }
.footer-grid li { margin-bottom: 10px; font-size: 13.5px; }
.footer-grid li a:hover { color: var(--teal); }
.footer-brand p { font-size: 13.5px; color: #93a3b8; max-width: 300px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); margin-top: 48px; padding-top: 22px;
  display: flex; justify-content: space-between; font-size: 12.5px; color: #93a3b8; flex-wrap: wrap; gap: 10px;
}

/* ===== Breadcrumb / page header ===== */
.page-hero {
  background: var(--navy); color: #fff; padding: 64px 0 56px;
}
.page-hero .crumb { font-size: 13px; color: #9fb1c6; margin-bottom: 14px; }
.page-hero .crumb a:hover { color: #fff; }
.page-hero h1 { font-size: 34px; }
.page-hero p { color: #c7d3e0; margin-top: 12px; max-width: 560px; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .quote-block { flex-direction: column; text-align: center; }
}
@media (max-width: 760px) {
  nav.main-nav {
    position: fixed; inset: 76px 0 0 0; background: #fff; flex-direction: column;
    justify-content: flex-start; padding: 32px 24px; gap: 22px; transform: translateX(100%);
    transition: transform .3s; z-index: 90;
  }
  nav.main-nav.open { transform: translateX(0); }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .hero h1 { font-size: 30px; }
  .hero { min-height: 460px; }
  .grid-2, .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 56px 0; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; }
  .news-row { flex-wrap: wrap; }
}