:root{
  --blue:#2382B8;         /* ロゴ基調色 */
  --blue-weak:#E8F3F9;
  --text:#222;
  --text-weak:#555;
  --bg:#fff;
  --border:#E6E8EB;
  --shadow:0 8px 20px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:"Noto Sans JP","Inter",system-ui,-apple-system,sans-serif;line-height:1.6}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
.container{width:min(1120px, calc(100% - 32px));margin:0 auto}
.section{padding:64px 0}
.section__hd{margin-bottom:28px}
.section__hd h2{font-size:28px;margin:0 0 8px}
.section__hd p{color:var(--text-weak);margin:0}

.btn{display:inline-block;padding:12px 18px;border-radius:10px;font-weight:700;border:1px solid var(--blue);transition:.2s}
.btn--primary{background:var(--blue);color:#fff}
.btn--primary:hover{filter:brightness(.96)}
.btn--ghost{background:#fff;color:var(--blue)}
.btn--ghost:hover{background:var(--blue-weak)}

.header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:20}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.header__brand{display:flex;gap:10px;align-items:center;color:#333;font-weight:700}
.header__nav a{margin:0 10px;color:#333}
.header__nav a:hover{color:var(--blue)}

.hero{padding:96px 0;background:linear-gradient(180deg,#fff, var(--blue-weak))}
.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.hero h1{font-size:36px;line-height:1.25;margin:0 0 12px}
.hero p{color:var(--text-weak);margin:0 0 20px}
.hero__buttons{display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:900px){.hero__grid{grid-template-columns:1fr}}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{border:1px solid var(--border);border-radius:14px;padding:18px;background:#fff;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:18px}
.card p{margin:0 0 10px;color:var(--text-weak)}

.works{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.work{border-radius:12px;overflow:hidden;border:1px solid var(--border);background:#fff;box-shadow:var(--shadow)}
.work__txt{padding:12px;font-weight:600}

.list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.badge{display:flex;align-items:center;gap:10px;border:1px dashed var(--border);padding:12px;border-radius:12px;background:#fff}
@media(max-width:900px){.cards,.works,.list{grid-template-columns:1fr}}

.process{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.process__item{padding:12px;border:1px solid var(--border);border-radius:12px;background:#fff;text-align:center;font-weight:600}
@media(max-width:900px){.process{grid-template-columns:1fr 1fr}}

.cta-band{background:var(--blue);color:#fff;padding:48px 0;margin-top:24px}
.cta-band__inner{text-align:center}
.cta-band__buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:10px}

.footer{margin-top:24px;border-top:1px solid var(--border);background:#fff}
.footer__inner{display:flex;justify-content:space-between;gap:18px;padding:24px 0}
.footer__brand p{margin:6px 0 0;color:var(--text-weak)}
.footer__nav a{margin-right:12px;color:#333}
.footer__copy{text-align:center;color:#777;padding:12px 0;border-top:1px solid var(--border)}


.container.hero__grid img {
    border-radius: 12px;
}

/* ハンバーガー初期状態は非表示、モバイルで表示 */
.hamburger{display:none; position:relative; width:42px; height:36px; border:none; background:transparent; cursor:pointer}
.hamburger span{position:absolute; left:8px; right:8px; height:2px; background:#333; transition:.25s}
.hamburger span:nth-child(1){top:10px}
.hamburger span:nth-child(2){top:17px}
.hamburger span:nth-child(3){top:24px}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.is-open span:nth-child(2){opacity:0}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* モバイルナビ */
.mobile-nav{position:fixed; inset:0 0 0 auto; width:min(82vw,340px); background:#fff; transform:translateX(100%); transition:transform .25s ease; z-index:998; border-left:1px solid var(--border); box-shadow:var(--shadow)}
.mobile-nav__inner{padding:20px}
.mobile-nav__links a{display:block; padding:14px 6px; color:#333; border-bottom:1px solid var(--border)}
.mobile-nav__cta{padding-top:14px}
.mobile-nav.is-open{transform:translateX(0)}
.mobile-nav__overlay{position:fixed; inset:0; background:rgba(0,0,0,.32); opacity:0; visibility:hidden; transition:.2s; z-index:997}
.mobile-nav__overlay.is-open{opacity:1; visibility:visible}

/* レスポンシブ切替 */
@media (max-width:900px){
  .header__nav, .header__cta{display:none}
  .hamburger{display:block}
}

/* モバイル表示時、背景スクロール抑止用 */
body.noscroll{overflow:hidden}