:root{
  --bg:#FAFCFE;--bg2:#E8F4F8;--ink:#10303d;--ink2:#2c4d5a;--mute:#5b7682;
  --accent:#2E94C8;--accent-deep:#1A6791;--coral:#F37367;--sand:#D99B5C;
  --line:#D6E6EE;--card:#FFFFFF;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Noto Sans JP",-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.85;-webkit-font-smoothing:antialiased}
.serif{font-family:"Noto Serif JP",serif}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}.narrow{max-width:780px}
a{color:inherit;text-decoration:none}
section{scroll-margin-top:72px}
/* header */
header{position:sticky;top:0;background:rgba(250,252,254,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:22px;letter-spacing:.18em;font-weight:700;color:var(--accent-deep)}
.nav-links{display:flex;gap:24px;align-items:center;font-size:14px}
.nav-links a:hover{color:var(--accent)}
.nav-links a.cta{background:var(--coral);color:#fff;padding:9px 18px;border-radius:999px;font-weight:600}
.nav-links a.cta:hover{color:#fff;opacity:.92}
@media(max-width:720px){.nav-links a:not(.cta){display:none}}
/* buttons */
.btn{display:inline-block;background:var(--coral);color:#fff;padding:15px 32px;border-radius:14px;font-weight:600;font-size:16px}
.btn small{display:block;font-size:11px;font-weight:400;opacity:.85}
.btn:hover{opacity:.93}
.btn-ghost{background:transparent;border:1.5px solid var(--accent);color:var(--accent-deep)}
/* hero */
.hero{padding:90px 0 50px;text-align:center;background:linear-gradient(180deg,var(--bg2),var(--bg))}
.kicker{color:var(--accent);font-size:13px;letter-spacing:.22em;font-weight:700;margin-bottom:18px}
.hero h1{font-size:clamp(34px,6vw,60px);line-height:1.3;font-weight:600;color:var(--ink)}
.hero p.lead{font-size:clamp(16px,2.4vw,20px);color:var(--mute);max-width:640px;margin:24px auto 0}
.hero-shot{margin:58px auto 0;max-width:300px;display:block;border-radius:36px;box-shadow:0 34px 80px rgba(26,103,145,.22);border:1px solid var(--line)}
/* statement */
.statement{background:var(--accent-deep);color:#eaf6fc;text-align:center;padding:84px 0}
.statement .serif{font-size:clamp(24px,3.6vw,40px);line-height:1.6;max-width:780px;margin:0 auto}
.statement b{color:#fff;font-weight:600;border-bottom:2px solid var(--coral)}
/* sections */
.sec{padding:88px 0;border-bottom:1px solid var(--line)}
.sec-head{text-align:center;margin-bottom:54px}
.sec-head .kicker{margin-bottom:12px}
.sec-head h2{font-size:clamp(26px,3.6vw,38px);font-weight:600;line-height:1.4}
.sec-head p{color:var(--mute);margin-top:14px;max-width:600px;margin-left:auto;margin-right:auto}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px}
.step{text-align:center;padding:0 10px}
.step .num{width:54px;height:54px;border-radius:50%;background:var(--bg2);color:var(--accent);font-weight:700;font-size:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;border:1px solid var(--line)}
.step h3{font-size:18px;margin-bottom:8px}.step p{color:var(--mute);font-size:15px}
.feature{display:flex;align-items:center;gap:64px;padding:66px 0}
.feature:nth-child(even){flex-direction:row-reverse}
.feature .txt{flex:1}.feature .shot{flex:0 0 250px;text-align:center}
.feature .shot img{max-width:240px;border-radius:30px;box-shadow:0 22px 50px rgba(26,103,145,.16);border:1px solid var(--line)}
.feature .tag{color:var(--accent);font-size:12px;letter-spacing:.2em;font-weight:700;margin-bottom:14px}
.feature h3{font-size:clamp(22px,3vw,30px);line-height:1.4;font-weight:600;margin-bottom:16px}
.feature p{color:var(--mute);font-size:16px}
.feature .more{display:inline-block;margin-top:16px;color:var(--accent-deep);font-weight:600;border-bottom:1px solid var(--accent)}
@media(max-width:780px){.feature,.feature:nth-child(even){flex-direction:column;gap:34px;text-align:center;padding:46px 0}}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.tile{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px 24px}
.tile h3{font-size:17px;margin-bottom:10px}.tile p{color:var(--mute);font-size:14.5px}
.cases{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px}
.case{background:var(--bg2);border-radius:18px;padding:30px 26px}
.case .who{color:var(--accent-deep);font-weight:700;margin-bottom:10px}.case p{color:var(--ink2);font-size:15px}
.privacy{background:var(--accent-deep);color:#eaf6fc}
.privacy .sec-head h2{color:#fff}.privacy .kicker{color:#9fd4ec}.privacy .sec-head p{color:#bcd9e6}
.pgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.pcard{border:1px solid #2f6e8e;border-radius:16px;padding:26px 22px}
.pcard h3{font-size:16px;margin-bottom:8px;color:#9fd4ec}.pcard p{color:#bcd9e6;font-size:14.5px}
.pricing{background:var(--bg2)}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;max-width:880px;margin:0 auto}
.plan{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:36px 28px}
.plan.feat{border-color:var(--coral);border-width:2px;position:relative}
.plan.feat::after{content:"おすすめ";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--coral);color:#fff;font-size:12px;padding:4px 14px;border-radius:999px}
.plan h3{font-size:18px}.plan .price{font-size:36px;font-weight:700;margin:12px 0;color:var(--accent-deep)}.plan .price small{font-size:14px;font-weight:400;color:var(--mute)}
.plan ul{list-style:none;margin-top:18px;text-align:left;font-size:14px;color:var(--mute)}.plan li{padding:7px 0;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{font-weight:600;cursor:pointer;font-size:17px;list-style:none;display:flex;justify-content:space-between}
.faq summary::after{content:"+";color:var(--coral);font-size:22px}.faq details[open] summary::after{content:"−"}
.faq p{color:var(--mute);margin-top:12px;font-size:15px}
.final{text-align:center;padding:96px 0;background:linear-gradient(180deg,var(--bg),var(--bg2))}
.final h2{font-size:clamp(28px,4vw,44px);font-weight:600;line-height:1.4;margin-bottom:28px}
footer{padding:54px 0 40px;text-align:center;border-top:1px solid var(--line);font-size:14px;color:var(--mute)}
footer .flinks{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-bottom:18px}
footer .flinks a:hover{color:var(--accent)}
/* article (detail pages) */
.page-hero{padding:70px 0 40px;text-align:center;background:linear-gradient(180deg,var(--bg2),var(--bg));border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(28px,4.6vw,46px);font-weight:600;line-height:1.3}
.page-hero p{color:var(--mute);margin-top:16px;max-width:600px;margin-left:auto;margin-right:auto}
.prose{padding:70px 0}.prose h2{font-size:26px;margin:44px 0 16px;font-weight:600}.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;margin:28px 0 10px}.prose p{color:var(--ink2);margin-bottom:16px}
.prose ul{margin:0 0 18px 22px;color:var(--ink2)}.prose li{margin:6px 0}
.breadcrumb{font-size:13px;color:var(--mute);margin-bottom:20px}.breadcrumb a:hover{color:var(--accent)}