:root{
  --bg:#ffffff;--bg2:#f4f7fb;--ink:#14213d;--ink2:#4a5568;--line:#dfe6ee;
  --navy:#0b2a5b;--accent:#e63946;--accent-d:#c22f3b;--free:#1f9d55;
  --boat:#2563eb;--keirin:#dc2626;--keiba:#16a34a;--chiho:#d4a106;--auto:#7c3aed;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Meiryo",sans-serif;line-height:1.75;font-size:16px;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy)}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}
.narrow{max-width:820px}
.sp{display:none}

.prbar{background:#eef2f7;color:var(--ink2);font-size:12px;text-align:center;padding:6px 16px;line-height:1.5}
.prbar a{color:var(--ink2)}

.hd{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.95);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--navy);font-weight:800;letter-spacing:.02em}
.brand small{font-weight:600;color:var(--ink2);font-size:.8em}
.nav{display:flex;gap:18px;margin-left:auto}
.nav a{text-decoration:none;color:var(--ink);font-size:14px;font-weight:600}
.nav a:hover{color:var(--accent)}

.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:999px;padding:14px 28px;text-align:center;transition:.15s}
.btn-sm{padding:8px 16px;font-size:14px;background:var(--navy);color:#fff}
.btn-sm:hover{background:#163f85}
.btn-main{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(230,57,70,.28)}
.btn-main:hover{background:var(--accent-d)}
.btn-line{border:2px solid var(--navy);color:var(--navy);background:#fff}
.btn-line:hover{background:var(--navy);color:#fff}
.btn-line.light{border-color:#fff;color:#fff;background:transparent}
.btn-line.light:hover{background:#fff;color:var(--navy)}
.btn-block{display:block;width:100%}

.hero{position:relative;padding:64px 0 56px;background:linear-gradient(180deg,rgba(255,255,255,.88),rgba(255,255,255,.96)),url(img/ai-hero-bg.jpg) center/cover}
.hero-in{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:center}
.eyebrow{margin:0 0 8px;color:var(--accent);font-weight:800;letter-spacing:.08em;font-size:13px}
.hero h1{margin:0 0 16px;font-size:36px;line-height:1.35;color:var(--navy)}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--boat),var(--keirin),var(--keiba),var(--chiho),var(--auto));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--ink2);margin:0 0 24px}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.cta.center{justify-content:center}
.chips{list-style:none;padding:0;margin:20px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.chips li{font-size:13px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;color:var(--ink2)}
.hero-shot{margin:0}
.hero-shot img{border-radius:12px;box-shadow:0 18px 40px rgba(11,42,91,.22);border:1px solid var(--line)}
figcaption{font-size:12px;color:var(--ink2);margin-top:8px;text-align:center}

.sec{padding:72px 0}
.sec.alt{background:var(--bg2)}
.kicker{margin:0;color:var(--accent);font-weight:800;letter-spacing:.12em;font-size:13px}
.kicker.red{color:var(--accent)}
.sec h2{margin:4px 0 12px;font-size:30px;color:var(--navy);line-height:1.4}
.sub{color:var(--ink2);margin:0 0 32px;max-width:760px}

.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ai-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-top:5px solid var(--c,var(--navy));border-radius:12px;padding:20px;text-decoration:none;color:var(--ink);transition:.15s}
a.ai-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(11,42,91,.12)}
.ai-card img{width:88px;height:88px;border-radius:50%;object-fit:cover;margin-bottom:10px;background:#000}
.ai-card .sport{font-size:13px;font-weight:700;color:var(--c,var(--accent))}
.ai-card b{font-size:20px;color:var(--navy)}
.ai-card .desc{font-size:14px;color:var(--ink2);margin-top:6px}
.ai-card small{display:block;font-size:12px;margin-top:4px}
.c-boat{--c:var(--boat)}.c-keirin{--c:var(--keirin)}.c-keiba{--c:var(--keiba)}.c-chiho{--c:var(--chiho)}.c-auto{--c:var(--auto)}
.price-card{background:linear-gradient(160deg,#fff,#fff4f4);border-top-color:var(--accent);justify-content:center}
.price{margin:8px 0;font-size:15px}
.price s{color:var(--ink2)}
.price strong{font-size:32px;color:var(--accent);white-space:nowrap}
.note{font-size:12px;color:var(--ink2);margin:10px 0 0}

.how{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-top:24px}
.steps,.flow{list-style:none;counter-reset:n;padding:0;margin:0}
.steps li,.flow li{counter-increment:n;position:relative;padding:0 0 18px 56px}
.steps li::before,.flow li::before{content:counter(n);position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;background:var(--navy);color:#fff;font-weight:800;display:grid;place-items:center}
.steps b,.flow b{display:block;font-size:17px;color:var(--navy)}
.steps span,.flow span{font-size:14px;color:var(--ink2)}
.how-img{margin:0}
.how-img img{border-radius:10px;box-shadow:0 10px 28px rgba(11,42,91,.18)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:24px}
.flow li{padding:56px 0 0 0}

.yosou{margin-top:48px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px}
.yosou h3{margin:0 0 6px;color:var(--navy)}
.yosou p{margin:0 0 16px;color:var(--ink2);font-size:14px}
.yo-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.yo-list a{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-left:5px solid var(--c);border-radius:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:15px}
.yo-list a:hover{background:#f8fafc}
.yo-list img{width:36px;height:36px;border-radius:50%}

.lu-h{margin:36px 0 14px;font-size:18px;color:var(--navy);padding-left:12px;border-left:5px solid var(--navy)}
.lu-h.free{border-left-color:var(--free)}
.lu{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.lu-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column}
.lu-card img{border-radius:8px;aspect-ratio:16/10;object-fit:cover;margin-bottom:12px;border:1px solid var(--line)}
.lu-card.wide{grid-column:1/-1;display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center}
.lu-card.wide img{margin:0;aspect-ratio:auto;max-height:420px;object-fit:contain;background:#111}
.lu-card h4{margin:4px 0 6px;font-size:19px;color:var(--navy)}
.lu-card p{margin:0 0 8px;font-size:14px;color:var(--ink2)}
.lu-card a{margin-top:auto;font-weight:700;font-size:14px;text-decoration:none}
.tag{align-self:flex-start;font-size:12px;font-weight:700;background:#e8eef8;color:var(--navy);padding:2px 10px;border-radius:999px}
.tag.free{background:#e3f6eb;color:var(--free)}
.yen{font-size:22px!important;font-weight:800;color:var(--ink)!important}
.yen small{font-size:12px;font-weight:400;color:var(--ink2)}

.special{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:#fff;border:2px solid var(--accent);border-radius:16px;padding:32px}
.special img{border-radius:10px}
.special p{color:var(--ink2)}

details{background:#fff;border:1px solid var(--line);border-radius:10px;margin:0 0 10px;padding:0 18px}
summary{cursor:pointer;font-weight:700;padding:14px 0;color:var(--navy)}
details p{margin:0 0 16px;color:var(--ink2);font-size:15px}

.final{background:linear-gradient(135deg,var(--navy),#163f85);color:#fff;text-align:center;padding:64px 0}
.final h2{margin:0 0 8px;font-size:28px}
.final p{margin:0 0 24px;opacity:.9}

.ft{background:#0a1a36;color:#b8c4d6;padding:32px 0;font-size:14px}
.ft a{color:#dbe4f0}
.ft .small{font-size:12px;opacity:.85}

/* グリッドの中身が画像の幅で横にはみ出さないように */
.hero-in>*,.how>*,.special>*,.ai-grid>*,.lu>*,.flow>*,.yo-list>*,.lu-card.wide>*{min-width:0}
@media (max-width:960px){
  .hero-in,.how,.special,.lu-card.wide{grid-template-columns:1fr}
  .ai-grid,.lu{grid-template-columns:1fr 1fr}
  .yo-list{grid-template-columns:repeat(3,1fr)}
  .flow{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .hd-in{justify-content:space-between}
}
@media (max-width:600px){
  .sp{display:inline}
  .hero{padding:40px 0}
  .hero h1{font-size:28px}
  .sec{padding:52px 0}
  .sec h2{font-size:24px}
  .ai-grid,.lu,.flow{grid-template-columns:minmax(0,1fr)}
  .hero-in,.how,.special,.lu-card.wide{grid-template-columns:minmax(0,1fr)}
  .yo-list{grid-template-columns:1fr 1fr}
  .btn{width:100%}
  .btn-sm{width:auto}
  .special{padding:20px}
  .brand small{display:none}
}