:root {
  --navy: #1b3541;
  --navy-2: #24475a;
  --sky: #71d0ff;
  --sky-soft: #e8f7ff;
  --ink: #1b2a33;
  --muted: #5a6b75;
  --line: #dbe5ea;
  --bg: #ffffff;
  --bg-alt: #f5f9fb;
  --radius: 14px;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Manrope", "Noto Sans JP", system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
html[lang="ja"] body { font-family: "Noto Sans JP", "Manrope", system-ui, "Hiragino Sans", "Yu Gothic UI", sans-serif; }

a { color: var(--navy-2); }
a:hover { color: #0a7fb8; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); font-weight: 800; font-family: "Manrope", sans-serif; font-size: 18px; letter-spacing: .01em; }
.brand img { width: 34px; height: 34px; }
.nav { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 600; }
.nav a:hover { color: var(--navy); }
.lang { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; color: var(--navy) !important; font-family: "Manrope", sans-serif; }
.lang:hover { border-color: var(--sky); background: var(--sky-soft); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 96px 0 88px; background: linear-gradient(180deg, #fff 0%, var(--bg-alt) 100%); }
.hero .wrap { display: grid; grid-template-columns: 1.3fr .7fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-block; font-family: "Manrope", sans-serif; font-weight: 700; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: #0a7fb8; margin-bottom: 18px; }
.hero h1 { margin: 0 0 22px; color: var(--navy); font-size: clamp(30px, 4.6vw, 48px); line-height: 1.35; font-weight: 800; letter-spacing: -.01em; }
html[lang="ja"] .hero h1 { letter-spacing: .02em; line-height: 1.45; }
.hero p.lead { margin: 0 0 32px; color: var(--muted); font-size: 17px; max-width: 36em; }
.hero-mark { justify-self: center; width: min(320px, 100%); }
.btn { display: inline-flex; align-items: center; gap: 8px; background: var(--navy); color: #fff; text-decoration: none; font-weight: 700; padding: 13px 24px; border-radius: 999px; transition: background .15s; }
.btn:hover { background: var(--navy-2); color: #fff; }
.btn-ghost { background: transparent; color: var(--navy); border: 1.5px solid var(--navy); margin-left: 10px; }
.btn-ghost:hover { background: var(--sky-soft); color: var(--navy); }

/* Sections */
section { padding: 88px 0; }
section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 40px; }
.section-head .eyebrow { margin-bottom: 8px; }
.section-head h2 { margin: 0; color: var(--navy); font-size: clamp(24px, 3vw, 32px); line-height: 1.4; }
.section-head p { margin: 12px 0 0; color: var(--muted); max-width: 40em; }

/* Services */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; position: relative; }
.card::before { content: ""; position: absolute; left: 26px; top: 0; width: 40px; height: 4px; background: var(--sky); border-radius: 0 0 4px 4px; }
.card .num { font-family: "Manrope", sans-serif; font-weight: 800; color: #9fb3bd; font-size: 14px; letter-spacing: .1em; }
.card h3 { margin: 6px 0 12px; color: var(--navy); font-size: 19px; line-height: 1.5; }
.card p { margin: 0 0 14px; color: var(--muted); font-size: 15px; }
.card ul { margin: 0; padding-left: 1.1em; color: var(--ink); font-size: 14.5px; }
.card li { margin: 2px 0; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.skill-group { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; }
.skill-group h3 { margin: 0 0 14px; font-size: 16px; color: var(--navy); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.chips li { background: var(--sky-soft); color: var(--navy); border-radius: 999px; padding: 4px 12px; font-size: 14px; font-weight: 600; line-height: 1.6; }

/* Profile */
.profile { display: grid; grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; }
.profile-name { font-size: 22px; font-weight: 800; color: var(--navy); margin: 0; }
.profile-name small { display: block; font-size: 14px; color: var(--muted); font-weight: 600; margin-top: 2px; font-family: "Manrope", sans-serif; }
.profile-role { color: var(--muted); margin: 6px 0 0; font-size: 15px; }
.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 22px 24px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 9px; width: 12px; height: 12px; border-radius: 50%; background: #fff; border: 3px solid var(--sky); }
.timeline .t-head { font-weight: 700; color: var(--navy); }
.timeline .t-body { color: var(--muted); font-size: 15px; margin-top: 2px; }

/* Company info */
.info { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.info th, .info td { text-align: left; padding: 18px 24px; border-bottom: 1px solid var(--line); vertical-align: top; }
.info tr:last-child th, .info tr:last-child td { border-bottom: none; }
.info th { width: 30%; color: var(--muted); font-weight: 600; font-size: 14.5px; background: #fafcfd; }
.info td { color: var(--ink); }
.info ul { margin: 0; padding-left: 1.1em; }

/* Contact */
.contact { text-align: center; background: var(--navy); color: #fff; }
.contact .eyebrow { color: var(--sky); }
.contact h2 { color: #fff; margin: 0 0 12px; font-size: clamp(24px, 3vw, 32px); }
.contact p { color: #c9d9e1; margin: 0 auto 30px; max-width: 34em; }
.contact .btn { background: var(--sky); color: var(--navy); }
.contact .btn:hover { background: #9adfff; color: var(--navy); }
.contact .mail { display: block; margin-top: 16px; color: #c9d9e1; font-size: 14px; font-family: "Manrope", sans-serif; }

/* Footer */
footer { background: #13262f; color: #8fa5b0; font-size: 13px; padding: 24px 0; }
footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
footer a { color: #c9d9e1; text-decoration: none; }

/* Responsive */
@media (max-width: 880px) {
  .hero { padding: 64px 0; }
  .hero .wrap { grid-template-columns: 1fr; gap: 32px; }
  .hero-mark { order: -1; width: 140px; justify-self: start; }
  .cards { grid-template-columns: 1fr; }
  .skills { grid-template-columns: 1fr; }
  .profile { grid-template-columns: 1fr; gap: 28px; }
  section { padding: 64px 0; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .nav a:not(.lang) { display: none; }
  .btn-ghost { margin: 12px 0 0; }
  .info th, .info td { display: block; width: 100%; padding: 12px 18px; }
  .info th { border-bottom: none; padding-bottom: 0; background: #fff; }
}