/* Def Works リニューアル デモ — シンプル / スタイリッシュ / フラット / 青系 */

:root {
  --navy: #0f2a52;
  --blue: #1d5bd6;
  --blue-light: #4f86ff;
  --blue-pale: #eef3ff;
  --ink: #16233d;
  --gray: #667085;
  --line: #e4e9f2;
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --radius: 14px;
  --maxw: 1120px;
  --ease: cubic-bezier(.22,.9,.32,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -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, p { margin: 0; }

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

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-size: 20px; font-weight: 700; letter-spacing: .02em; color: var(--navy); }
.logo span { color: var(--blue); }
.nav { display: flex; align-items: center; gap: 36px; }
.nav a {
  font-size: 14px; font-weight: 600; color: var(--ink);
  position: relative; padding: 6px 0;
}
.nav a.active, .nav a:hover { color: var(--blue); }
.nav a.is-btn {
  background: var(--blue); color: #fff; padding: 10px 22px; border-radius: 999px;
}
.nav a.is-btn:hover { background: var(--navy); }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav { position: fixed; inset: 72px 0 0 0; background: #fff; flex-direction: column; justify-content: flex-start; align-items: flex-start; gap: 0; padding: 12px 24px 32px; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: .25s var(--ease); }
  .nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav a { width: 100%; padding: 16px 0; border-bottom: 1px solid var(--line); }
  .nav a.is-btn { margin-top: 16px; text-align: center; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px; width: 28px; background: none; border: 0; cursor: pointer; padding: 8px;
  }
  .nav-toggle span { width: 100%; height: 2px; background: var(--navy); border-radius: 2px; transition: .25s var(--ease); }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 15px 30px; border-radius: 999px; font-weight: 700; font-size: 15px;
  transition: .2s var(--ease);
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--navy); transform: translateY(-2px); }
.btn-outline { border: 1.5px solid var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 120px 0 100px; background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%); }
.hero .wrap { position: relative; z-index: 2; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .12em; color: var(--blue); background: var(--blue-pale); padding: 7px 16px; border-radius: 999px; margin-bottom: 24px; }
.hero h1 { font-size: clamp(30px, 4.6vw, 52px); font-weight: 800; line-height: 1.45; color: var(--navy); letter-spacing: .01em; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero p.lead { margin-top: 22px; font-size: 16px; color: var(--gray); max-width: 560px; }
.hero-cta { margin-top: 36px; display: flex; gap: 16px; flex-wrap: wrap; }

.blob { position: absolute; border-radius: 50%; filter: blur(4px); opacity: .5; animation: float 9s ease-in-out infinite; }
.blob-1 { width: 420px; height: 420px; right: -140px; top: -120px; background: radial-gradient(circle at 30% 30%, var(--blue-light), var(--blue) 70%); opacity: .16; }
.blob-2 { width: 260px; height: 260px; right: 120px; top: 220px; background: radial-gradient(circle at 30% 30%, var(--navy), transparent 70%); opacity: .10; animation-delay: -3s; }
@keyframes float { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-24px) } }

.hero-grid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 64px; }
@media (min-width: 760px) { .hero-grid { grid-template-columns: repeat(4, 1fr); } }
.hero-tile { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.hero-tile .num { font-size: 26px; font-weight: 800; color: var(--navy); }
.hero-tile .lbl { margin-top: 6px; font-size: 13px; color: var(--gray); }

/* ---------- Section generic ---------- */
section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 620px; margin: 0 auto 56px; text-align: center; }
.section-head .tag { font-size: 13px; font-weight: 700; letter-spacing: .12em; color: var(--blue); }
.section-head h2 { margin-top: 12px; font-size: clamp(24px, 3.2vw, 34px); font-weight: 800; color: var(--navy); }
.section-head p { margin-top: 14px; color: var(--gray); font-size: 15px; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 960px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr);} }
@media (max-width: 620px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 26px; transition: .25s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -22px rgba(15,42,82,.25); border-color: transparent; }
.card .ico {
  width: 52px; height: 52px; border-radius: 14px; background: var(--blue-pale);
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.card .ico svg { width: 24px; height: 24px; stroke: var(--blue); }
.card h3 { font-size: 17px; font-weight: 700; color: var(--navy); }
.card p { margin-top: 10px; font-size: 14px; color: var(--gray); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }

/* ---------- Breadcrumb / page hero (sub pages) ---------- */
.page-head { position: relative; overflow: hidden; padding: 74px 0 56px; background: linear-gradient(180deg, #f8faff 0%, #ffffff 100%); border-bottom: 1px solid var(--line); }
.page-head .wrap { position: relative; z-index: 2; }
.page-head .tag { font-size: 13px; font-weight: 700; letter-spacing: .12em; color: var(--blue); }
.page-head h1 { margin-top: 14px; font-size: clamp(26px, 4vw, 40px); font-weight: 800; color: var(--navy); }
.page-head p { margin-top: 14px; color: var(--gray); max-width: 560px; }

/* ---------- Company page ---------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 760px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat { text-align: center; padding: 34px 10px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.stat .num { font-size: 38px; font-weight: 800; color: var(--blue); font-variant-numeric: tabular-nums; }
.stat .num::after { content: attr(data-suffix); }
.stat .lbl { margin-top: 8px; font-size: 13px; color: var(--gray); }

.timeline { position: relative; margin-top: 8px; padding-left: 28px; border-left: 2px solid var(--line); }
.timeline::before {
  content: ""; position: absolute; left: -2px; top: 0; width: 2px; height: 0;
  background: var(--blue); transition: height 1.4s var(--ease);
}
.timeline.is-drawn::before { height: 100%; }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ""; position: absolute; left: -34px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px var(--blue-pale); }
.timeline-item .year { font-size: 13px; font-weight: 700; color: var(--blue); }
.timeline-item h3 { margin-top: 6px; font-size: 16px; font-weight: 700; color: var(--navy); }
.timeline-item p { margin-top: 6px; font-size: 14px; color: var(--gray); }

.value-list { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
@media (max-width: 760px) { .value-list { grid-template-columns: 1fr; } }
.value-item { padding: 30px 24px; border-radius: var(--radius); background: var(--navy); color: #fff; }
.value-item .idx { font-size: 13px; font-weight: 700; color: var(--blue-light); }
.value-item h3 { margin-top: 12px; font-size: 18px; font-weight: 800; }
.value-item p { margin-top: 10px; font-size: 14px; color: #c7d3ea; }

/* ---------- Business page ---------- */
.service-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 56px 0; border-bottom: 1px solid var(--line); }
.service-block:last-child { border-bottom: 0; }
.service-block:nth-child(even) .service-visual { order: 2; }
@media (max-width: 860px) { .service-block { grid-template-columns: 1fr; gap: 28px; } .service-block:nth-child(even) .service-visual { order: 0; } }
.service-visual {
  aspect-ratio: 4/3; border-radius: 20px; background: linear-gradient(135deg, var(--blue-pale), #dfe9ff);
  display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.service-visual .num-mark { font-size: 96px; font-weight: 800; color: rgba(29,91,214,.18); }
.service-num { font-size: 13px; font-weight: 700; color: var(--blue); letter-spacing: .1em; }
.service-block h3 { margin-top: 10px; font-size: 22px; font-weight: 800; color: var(--navy); }
.service-block p.desc { margin-top: 14px; color: var(--gray); font-size: 14.5px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag-row span { font-size: 12.5px; font-weight: 600; color: var(--navy); background: var(--blue-pale); padding: 6px 14px; border-radius: 999px; }

/* ---------- Blog page ---------- */
.post-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: .25s var(--ease); }
.post-card:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -22px rgba(15,42,82,.25); }
.post-thumb { aspect-ratio: 16/10; background: linear-gradient(135deg, var(--navy), var(--blue)); position: relative; }
.post-thumb::after { content: attr(data-cat); position: absolute; left: 14px; bottom: 14px; font-size: 12px; font-weight: 700; color: #fff; background: rgba(255,255,255,.18); padding: 5px 12px; border-radius: 999px; backdrop-filter: blur(4px); }
.post-body { padding: 22px 22px 26px; }
.post-date { font-size: 12.5px; color: var(--gray); font-weight: 600; }
.post-body h3 { margin-top: 10px; font-size: 16px; font-weight: 700; color: var(--navy); line-height: 1.6; }
.post-body p { margin-top: 8px; font-size: 13.5px; color: var(--gray); }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-info-item .ico { flex: none; width: 44px; height: 44px; border-radius: 12px; background: var(--blue-pale); display: flex; align-items: center; justify-content: center; }
.contact-info-item .ico svg { width: 20px; height: 20px; stroke: var(--blue); }
.contact-info-item h4 { font-size: 14px; font-weight: 700; color: var(--navy); }
.contact-info-item p { margin-top: 4px; font-size: 13.5px; color: var(--gray); }

.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; }
.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-size: 13.5px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.form-row label .req { color: #e5484d; font-weight: 700; margin-left: 4px; font-size: 12px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; padding: 13px 16px; border: 1.5px solid var(--line); border-radius: 10px; font-size: 14px;
  font-family: inherit; color: var(--ink); background: var(--bg-soft); transition: .2s;
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { outline: none; border-color: var(--blue); background: #fff; }
.form-row textarea { resize: vertical; min-height: 130px; }
.form-note { margin-top: 18px; font-size: 12.5px; color: var(--gray); }
.form button { width: 100%; margin-top: 6px; border: none; cursor: pointer; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--navy); border-radius: 28px; padding: 64px 48px; text-align: center; position: relative; overflow: hidden; }
.cta-band h2 { color: #fff; font-size: clamp(22px, 3vw, 30px); font-weight: 800; }
.cta-band p { margin-top: 12px; color: #b9c7e4; font-size: 14.5px; }
.cta-band .hero-cta { justify-content: center; margin-top: 30px; }
.cta-band .btn-outline { border-color: rgba(255,255,255,.5); color: #fff; }
.cta-band .btn-outline:hover { background: #fff; color: var(--navy); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: #c7d3ea; padding: 56px 0 28px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.footer-grid .logo { color: #fff; }
.footer-grid .logo span { color: var(--blue-light); }
.footer-grid p { margin-top: 14px; font-size: 13.5px; color: #9fb0d1; max-width: 320px; }
.footer-col h4 { font-size: 13px; font-weight: 700; color: #fff; letter-spacing: .06em; margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; font-size: 13.5px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { margin-top: 44px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.12); font-size: 12.5px; color: #7f92b8; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* demo badge */
.demo-badge {
  position: fixed; left: 16px; bottom: 16px; z-index: 200;
  background: var(--navy); color: #fff; font-size: 12px; font-weight: 700;
  padding: 10px 16px; border-radius: 999px; box-shadow: 0 10px 24px -8px rgba(15,42,82,.5);
  opacity: .92;
}