:root{
  --brand:#7bc9cb;     /* ブランドカラー */
  --main:#1f7378;      /* 文字・ボタン用の濃色(白文字が読めるコントラスト) */
  --main-dark:#175a5e;
  --accent:#7bc9cb;    /* ボタン色 */
  --text:#2b2f36;
  --bg:#f5f7fa;
  --card:#fff;
  --line:#dde3ea;
  --font:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",Meiryo,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{--text:#e8ebef;--bg:#14181d;--card:#1d232a;--line:#343c46;--main:#7bc9cb;--main-dark:#5fb3b6;--accent:#7bc9cb}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.8}
img{max-width:100%}
a{color:var(--main)}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
header{background:var(--card);border-bottom:4px solid var(--brand)}
header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:12px;padding-bottom:12px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:var(--main);text-decoration:none}
.logo img{height:60px;width:auto}
.logo span{display:none}
.logo img[hidden]+span{display:inline}
.cmyk{display:flex;gap:4px}
.cmyk i{width:10px;height:10px;border-radius:50%}
.btn{display:inline-block;background:var(--accent);color:#0b3a3d;font-weight:700;padding:12px 28px;border-radius:999px;text-decoration:none;border:0;font-size:1rem;cursor:pointer;font-family:inherit}
.btn:hover{filter:brightness(.95)}
.btn.main{background:var(--main);color:#fff}
.hero{background:linear-gradient(135deg,#8fd3d5,var(--brand));color:#0b2f31;position:relative;overflow:hidden}
.hero .bg{position:absolute;inset:0;background:url(images/hero.jpg) center/cover;opacity:.25}
.hero .wrap{position:relative;padding-top:64px;padding-bottom:64px}
.hero h1{font-size:clamp(1.5rem,4.5vw,2.3rem);line-height:1.4;margin:0 0 12px}
.hero p{margin:0 0 24px;max-width:640px}
.notice{background:var(--card);border-left:6px solid var(--accent);padding:20px 24px;margin:-28px auto 40px;position:relative;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.1)}
.notice h2{margin:0 0 6px;font-size:1.1rem}
.notice p{margin:0}
section{margin:56px 0}
h2.title{font-size:1.5rem;margin:0 0 24px;padding-bottom:8px;border-bottom:3px solid var(--main);display:inline-block}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:22px}
.card h3{margin:0 0 8px;color:var(--main);font-size:1.1rem}
.card p{margin:0;font-size:.95rem}
.num{display:inline-block;background:var(--main);color:#fff;width:28px;height:28px;border-radius:50%;text-align:center;line-height:28px;font-weight:700;margin-right:8px}
ul.list{padding-left:1.2em}
form{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:28px}
.row{margin-bottom:20px}
label,.lbl{display:block;font-weight:700;margin-bottom:6px}
.req{background:#d33;color:#fff;font-size:.7rem;padding:1px 6px;border-radius:4px;margin-left:6px;vertical-align:middle}
input[type=text],input[type=email],input[type=tel],select,textarea{width:100%;padding:11px 12px;font-size:1rem;font-family:inherit;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--text)}
textarea{min-height:160px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--main);border-color:transparent}
.radios label{display:inline-block;font-weight:400;margin-right:20px}
.hint{font-size:.85rem;opacity:.75;margin:4px 0 0}
.hp{position:absolute;left:-9999px}
#repeat-box{display:none}
#msg{margin-top:16px;padding:14px;border-radius:8px;display:none}
#msg.ok{display:block;background:#e5f6ea;color:#14532d}
#msg.ng{display:block;background:#fde8e8;color:#7f1d1d}
footer{background:#1b2430;color:#cfd6df;padding:32px 0;font-size:.9rem;text-align:center}
footer a{color:#cfd6df}

.cmyk{margin-bottom:14px}.c1{background:#00aeef}.c2{background:#ec008c}.c3{background:#fff200}.c4{background:#222}.card.gap{margin-top:14px}
.hero .btn{background-color: yellow}
.btn.main{background:var(--main);color:#fff}
a.btn{background-color: yellow}


dialog{border:0;border-radius:14px;padding:28px;max-width:460px;width:calc(100% - 32px);background:var(--card);color:var(--text);box-shadow:0 12px 40px rgba(0,0,0,.35)}
dialog::backdrop{background:rgba(0,0,0,.5)}
dialog h3{margin:0 0 10px;font-size:1.25rem}
dialog p{margin:0 0 14px}
dialog dl{margin:0 0 18px;padding:12px 14px;background:var(--bg);border-radius:8px;font-size:.9rem}
dialog dt{font-weight:700;float:left;clear:left;margin-right:8px}
dialog dd{margin:0 0 4px;overflow-wrap:anywhere}
.dlg-btns{display:flex;gap:12px;justify-content:flex-end}
.btn.sub{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn:disabled{opacity:.6;cursor:wait}
.card.contact{text-align:center}
.card.contact .big{font-size:1.5rem;font-weight:700;margin:6px 0;overflow-wrap:anywhere}
.card.contact .big a{text-decoration:none}