:root{
  --bg:#F7F6EE; --green:#7DA55A; --green-dark:#6B9249; --green-pale:#EAF3DC; --green-soft:#F1F6EA;
  --text:#2F312B; --sub:#6B6F66; --light:#9AA092; --border:#E7E4D8; --card:#FFFFFF; --hill:#E3EFD0;
  --radius:18px; --shadow:0 10px 30px rgba(80,100,60,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(247,246,238,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:22px;color:var(--green)}
.brand img{height:34px;width:auto}
.menu{display:flex;align-items:center;gap:28px}
.menu a{font-size:14px;font-weight:600;color:var(--text)}
.menu a:hover{color:var(--green)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:999px;font-weight:700;cursor:pointer;border:none}
.btn-primary{background:var(--green);color:#fff;padding:12px 22px;font-size:14px;box-shadow:0 6px 16px rgba(125,165,90,.3)}
.menu a.btn-primary,.nav a.btn-primary{color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.nav-toggle{display:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 0}
.hero .wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:46px;line-height:1.25;font-weight:800;letter-spacing:.01em}
.hero h1 .g{color:var(--green)}
.hero p.lead{margin-top:18px;font-size:16px;color:var(--sub)}
.badges{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:10px;background:#1b1b1b;color:#fff;border-radius:12px;padding:10px 18px;min-width:160px}
.badge small{display:block;font-size:10px;opacity:.85;line-height:1.2}
.badge b{font-size:17px;line-height:1.2}
.badge svg{width:22px;height:22px;flex:none}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:flex-end}
.phone{width:280px;background:#1d1d1f;border-radius:42px;padding:10px;box-shadow:0 24px 60px rgba(0,0,0,.25)}
.phone .screen{background:var(--bg);border-radius:32px;overflow:hidden;aspect-ratio:9/19.5}
.phone .screen img{width:100%;height:100%;object-fit:cover}
.hero-mascot{position:absolute;right:-30px;bottom:0;width:190px}
.hill{position:absolute;left:0;right:0;bottom:0;height:200px;background:url(assets/hill.png) center bottom/cover no-repeat;z-index:1}

/* section */
section{padding:72px 0}
.section-title{text-align:center;font-size:28px;font-weight:800;margin-bottom:48px}
.howto{background:linear-gradient(180deg,var(--green-soft),var(--bg))}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{text-align:center}
.step .ill{position:relative;width:130px;height:130px;margin:0 auto 14px;background:var(--card);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.step .ill img{width:96px;height:96px;object-fit:contain}
.step .num{position:absolute;top:-6px;left:50%;transform:translateX(-50%);background:var(--green);color:#fff;width:26px;height:26px;border-radius:50%;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center}
.step h3{font-size:15px;font-weight:700;margin-bottom:4px}
.step p{font-size:13px;color:var(--sub)}
.step-arrow{display:flex;align-items:center;justify-content:center;color:var(--green);font-size:22px}

/* features */
.features .cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;background:var(--card);border-radius:24px;padding:28px;box-shadow:var(--shadow)}
.feature{text-align:center;padding:14px}
.feature .ic{width:64px;height:64px;border-radius:50%;background:var(--green-pale);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;color:var(--green)}
.feature .ic svg{width:30px;height:30px}
.feature h3{font-size:15px;font-weight:700;margin-bottom:6px}
.feature p{font-size:13px;color:var(--sub)}

/* faq */
.faq{background:var(--green-soft)}
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--card);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:18px 20px;font-weight:700;font-size:15px;cursor:pointer}
.faq-q::after{content:"+";color:var(--green);font-size:22px;font-weight:700}
.faq-item.open .faq-q::after{content:"–"}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--sub);font-size:14px;padding:0 20px}
.faq-item.open .faq-a{max-height:300px;padding:0 20px 18px}

/* cta */
.cta{position:relative;overflow:hidden;background:linear-gradient(180deg,var(--bg),var(--green-soft))}
.cta .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center}
.cta h2{font-size:26px;font-weight:800;line-height:1.4}
.cta p{margin-top:12px;color:var(--sub);font-size:15px}
.cta .badges{margin-top:22px}
.cta-visual{position:relative;display:flex;justify-content:center}
.cta-mascot{width:200px}
.speech{position:absolute;top:10px;right:0;background:var(--green-pale);color:var(--green-dark);font-weight:700;font-size:13px;padding:10px 16px;border-radius:16px 16px 16px 4px}

/* contact */
.contact-form{max-width:600px;margin:0 auto;background:var(--card);border-radius:20px;padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:15px;font-family:inherit;background:#fff;color:var(--text)}
.field textarea{min-height:130px;resize:vertical}
.contact-form .btn-primary{width:100%;padding:15px;font-size:16px}

/* footer */
footer{background:#2F312B;color:#d9dcd3;padding:48px 0 32px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
.foot .brand{color:#fff}
.foot-links{display:flex;flex-wrap:wrap;gap:18px 28px}
.foot-links a{font-size:13px;color:#b8bcb0}
.foot-links a:hover{color:#fff}
.copyright{margin-top:28px;font-size:12px;color:#8a8e84;text-align:center}

/* legal pages */
.doc{max-width:760px;margin:0 auto;padding:48px 0}
.doc h1{font-size:26px;font-weight:800;margin-bottom:8px}
.doc .updated{color:var(--light);font-size:13px;margin-bottom:28px}
.doc h2{font-size:18px;font-weight:700;margin:28px 0 10px}
.doc p,.doc li{font-size:14px;color:var(--sub);margin-bottom:8px}
.doc ul,.doc ol{padding-left:22px}
.doc table{width:100%;border-collapse:collapse;margin:12px 0}
.doc th,.doc td{border:1px solid var(--border);padding:10px 12px;font-size:14px;text-align:left;vertical-align:top}
.doc th{background:var(--green-soft);width:34%}
.back{display:inline-block;margin-bottom:24px;color:var(--green);font-weight:700;font-size:14px}

@media(max-width:860px){
  .menu{display:none}
  .hero .wrap,.cta .wrap{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .hero-visual{margin-top:24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step-arrow{display:none}
  .features .cards{grid-template-columns:repeat(2,1fr)}
  .cta-visual{margin-top:16px}
}