:root {
  --navy: #12305b;
  --navy-dark: #0b1f3d;
  --accent: #1f7ae0;
  --ink: #1f2933;
  --muted: #5b6b7c;
  --line: #dde3ea;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 64px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--navy); font-weight: 700; }
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--accent) 100%);
  display: grid; place-items: center; color: #fff; font-size: 15px; font-weight: 700; letter-spacing: .02em;
}
.brand .name { font-size: 17px; line-height: 1.2; }
.brand .name small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .08em; }

.nav { display: flex; gap: 4px 18px; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; }
.nav a { color: var(--ink); font-size: 14px; font-weight: 500; padding: 6px 0; }
.nav a:hover { color: var(--accent); text-decoration: none; }

/* hero */
.hero {
  background: radial-gradient(1200px 500px at 80% -10%, rgba(31,122,224,.18), transparent 60%),
              linear-gradient(180deg, var(--navy-dark) 0%, var(--navy) 100%);
  color: #fff;
  padding: 72px 0 64px;
}
.hero .eyebrow { font-size: 13px; letter-spacing: .18em; opacity: .8; margin: 0 0 14px; }
.hero h1 { font-size: clamp(26px, 4.6vw, 42px); line-height: 1.35; margin: 0 0 20px; font-weight: 700; }
.hero p { max-width: 640px; margin: 0 0 28px; font-size: 16px; opacity: .92; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 8px;
  font-weight: 700; font-size: 15px; border: 2px solid transparent;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: #fff; color: var(--navy); }
.btn-primary:hover { background: #eaf2ff; }
.btn-ghost { border-color: rgba(255,255,255,.6); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.1); }

/* sections */
section { padding: 64px 0; }
section.soft { background: var(--bg-soft); }
.section-head { margin-bottom: 32px; }
.section-head .label { color: var(--accent); font-size: 13px; letter-spacing: .18em; font-weight: 700; margin: 0 0 6px; }
.section-head h2 { font-size: clamp(22px, 3.2vw, 30px); margin: 0; line-height: 1.4; }
.section-head p { color: var(--muted); margin: 10px 0 0; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 26px 24px;
  display: flex; flex-direction: column; gap: 10px;
}
.card .num { font-size: 12px; color: var(--accent); font-weight: 700; letter-spacing: .12em; }
.card h3 { margin: 0; font-size: 18px; line-height: 1.5; }
.card p { margin: 0; font-size: 14.5px; color: var(--muted); }
.card ul { margin: 4px 0 0; padding-left: 18px; font-size: 14px; color: var(--ink); }
.card ul li { margin: 2px 0; }
.card .link { margin-top: auto; padding-top: 8px; font-size: 14px; font-weight: 700; }

/* service site */
.feature {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 32px;
}
.feature h3 { margin: 0 0 10px; font-size: 22px; }
.feature p { margin: 0 0 14px; color: var(--muted); font-size: 15px; }
.feature .panel {
  background: linear-gradient(135deg, #0f2a52, #1f7ae0); color: #fff; border-radius: 12px;
  padding: 28px; text-align: center;
}
.feature .panel .big { font-size: 30px; font-weight: 700; letter-spacing: .04em; }
.feature .panel .sub { opacity: .85; font-size: 14px; margin-top: 6px; }

/* flow */
.flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; counter-reset: step; }
.flow div {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 20px;
  position: relative;
}
.flow div::before {
  counter-increment: step; content: "0" counter(step);
  display: block; color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: .12em; margin-bottom: 6px;
}
.flow strong { display: block; font-size: 16px; margin-bottom: 4px; }
.flow span { font-size: 14px; color: var(--muted); }

/* company */
.company { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.company th, .company td { padding: 14px 18px; border-bottom: 1px solid var(--line); vertical-align: top; text-align: left; font-size: 15px; }
.company tr:last-child th, .company tr:last-child td { border-bottom: 0; }
.company th { width: 160px; background: var(--bg-soft); font-weight: 700; color: var(--navy); white-space: nowrap; }
.company ul { margin: 0; padding-left: 18px; }
.company-wrap { overflow-x: auto; }

/* contact */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.contact-box { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.contact-box .k { font-size: 13px; color: var(--muted); letter-spacing: .08em; margin-bottom: 6px; }
.contact-box .v { font-size: 20px; font-weight: 700; color: var(--navy); word-break: break-all; }
.contact-box .v a { color: var(--navy); }
.contact-box .note { font-size: 13px; color: var(--muted); margin-top: 8px; }

/* footer */
.site-footer { background: var(--navy-dark); color: rgba(255,255,255,.85); padding: 36px 0 28px; font-size: 13px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: flex-end; }
.site-footer .fname { font-weight: 700; color: #fff; font-size: 15px; margin-bottom: 4px; }
.site-footer nav a { color: rgba(255,255,255,.85); margin-right: 16px; }
.site-footer .copy { width: 100%; margin-top: 16px; opacity: .6; }

/* legal page */
.legal { max-width: 800px; }
.legal h1 { font-size: 26px; margin: 0 0 8px; }
.legal .updated { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.legal h2 { font-size: 18px; margin: 30px 0 8px; border-left: 4px solid var(--accent); padding-left: 10px; }
.legal p, .legal li { font-size: 15px; }

@media (max-width: 760px) {
  .site-header { position: static; }
  .site-header .wrap { min-height: 56px; padding-top: 8px; padding-bottom: 8px; }
  .nav { width: 100%; gap: 2px 14px; }
  .nav a { font-size: 13px; padding: 4px 0; }
  .hero { padding: 48px 0 44px; }
  section { padding: 48px 0; }
  .feature { grid-template-columns: 1fr; padding: 22px; }
  .company th { width: 110px; }
  .company th, .company td { padding: 12px 12px; font-size: 14px; }
}

.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-dark); }