/* ── Tokens ───────────────────────────────────── */
:root{
  --navy:#0c1a2e;
  --navy-2:#13294a;
  --ink:#1a2332;
  --slate:#5a6b80;
  --line:#e3e8ef;
  --bg:#ffffff;
  --bg-soft:#f5f8fc;
  --accent:#2b6cff;
  --accent-dark:#1a4fd6;
  --gold:#c9a24b;
  --ok:#16a34a;
  --radius:14px;
  --maxw:1080px;
  --shadow:0 8px 30px rgba(12,26,46,.08);
  --shadow-sm:0 2px 10px rgba(12,26,46,.06);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.container.narrow{max-width:720px}
.accent{color:var(--accent)}

/* ── Buttons ──────────────────────────────────── */
.btn{
  display:inline-block;
  background:var(--accent);
  color:#fff;
  font-weight:700;
  padding:14px 28px;
  border-radius:999px;
  border:none;
  cursor:pointer;
  font-size:1rem;
  transition:transform .12s ease, background .2s ease, box-shadow .2s ease;
  box-shadow:0 6px 18px rgba(43,108,255,.28);
}
.btn:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn-lg{padding:18px 40px;font-size:1.1rem}
.btn-sm{padding:9px 20px;font-size:.92rem;box-shadow:none}
.btn-block{width:100%}

/* ── Header ───────────────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;font-size:1.3rem;color:var(--navy);display:flex;align-items:baseline;gap:8px}
.brand-sub{font-size:.72rem;font-weight:600;color:var(--slate)}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{color:var(--ink);font-weight:600;font-size:.95rem}
.nav-links a:hover{color:var(--accent)}

/* ── Hero ─────────────────────────────────────── */
.hero{
  background:
    radial-gradient(1200px 500px at 75% -10%, rgba(43,108,255,.22), transparent 60%),
    linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);
  color:#fff;
  padding:88px 0 96px;
}
.hero-inner{text-align:center}
.badge{
  display:inline-block;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.25);
  color:#dbe6ff;
  font-size:.82rem;font-weight:700;
  padding:7px 16px;border-radius:999px;
  letter-spacing:.02em;
}
.hero h1{
  font-size:clamp(2rem,5.2vw,3.4rem);
  font-weight:800;line-height:1.3;
  margin:26px 0 20px;letter-spacing:.01em;
}
.lead{
  font-size:clamp(1rem,2.2vw,1.22rem);
  color:#c8d4e6;max-width:640px;margin:0 auto;
}
.lead strong{color:#fff}
.hero-cta{margin:36px 0 14px;display:flex;flex-direction:column;align-items:center;gap:12px}
.cta-note{font-size:.86rem;color:#9fb2cc}
.hero-points{
  list-style:none;display:flex;flex-wrap:wrap;gap:14px 28px;
  justify-content:center;margin-top:28px;color:#dbe6ff;font-weight:600;font-size:.95rem;
}

/* ── Sections ─────────────────────────────────── */
.section{padding:78px 0}
.section:nth-child(even){background:var(--bg-soft)}
.section-title{
  font-size:clamp(1.5rem,3.4vw,2.1rem);
  font-weight:800;color:var(--navy);text-align:center;
  line-height:1.4;margin-bottom:38px;
}
.micro-note{text-align:center;color:var(--slate);font-size:.82rem;margin-top:26px}
.source{text-align:center;color:var(--slate);font-size:.8rem;margin-top:18px}

/* ── Problem / stats ──────────────────────────── */
.problem{background:var(--bg)}
.stat-row{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin-bottom:34px}
.stat{
  flex:1 1 320px;max-width:440px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;text-align:center;box-shadow:var(--shadow-sm);
}
.stat-num{font-size:2.8rem;font-weight:800;color:var(--accent);line-height:1}
.stat-label{color:var(--slate);font-size:.92rem;margin-top:12px}
.problem-body{max-width:760px;margin:0 auto;font-size:1.05rem}
.problem-body strong{color:var(--navy)}

/* ── Features ─────────────────────────────────── */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-icon{font-size:2rem;margin-bottom:14px}
.card h3{font-size:1.18rem;color:var(--navy);margin-bottom:10px}
.card p{color:var(--slate);font-size:.96rem}

/* ── Flow (before/after) ──────────────────────── */
.flow-grid{display:flex;align-items:stretch;gap:20px;justify-content:center;flex-wrap:wrap}
.flow-col{
  flex:1 1 320px;max-width:420px;
  border-radius:var(--radius);padding:28px;
}
.flow-col.before{background:#fff;border:1px solid var(--line)}
.flow-col.after{background:var(--navy);color:#fff;box-shadow:var(--shadow)}
.flow-col h3{font-size:1.1rem;margin-bottom:16px}
.flow-col.before h3{color:var(--slate)}
.flow-col ol{padding-left:22px;display:flex;flex-direction:column;gap:9px}
.flow-col.after ol{color:#d4e0f3}
.flow-tag{margin-top:18px;font-weight:700;color:var(--slate)}
.flow-tag.accent-tag{color:#7fa8ff}
.flow-arrow{display:flex;align-items:center;font-size:2rem;color:var(--accent);font-weight:800}

/* ── Why ──────────────────────────────────────── */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;border-top:4px solid var(--accent)}
.why-item h3{color:var(--navy);font-size:1.12rem;margin-bottom:10px}
.why-item p{color:var(--slate);font-size:.95rem}

/* ── Pricing ──────────────────────────────────── */
.pricing{background:var(--bg);text-align:center}
.pricing p{font-size:1.05rem;color:var(--ink);max-width:620px;margin:0 auto 28px}
.pricing strong{color:var(--navy)}

/* ── Trust ────────────────────────────────────── */
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:880px;margin:0 auto}
.trust-item{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:18px 22px;font-weight:600;color:var(--ink);display:flex;gap:12px;align-items:flex-start;
}
.trust-item span{color:var(--ok);font-weight:800;flex-shrink:0}

/* ── FAQ ──────────────────────────────────────── */
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:0;margin-bottom:14px;overflow:hidden;
}
.faq summary{
  cursor:pointer;list-style:none;padding:20px 24px;
  font-weight:700;color:var(--navy);position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";position:absolute;right:24px;color:var(--accent);font-weight:800}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 24px 22px;color:var(--slate)}

/* ── Register form ────────────────────────────── */
.register{background:var(--bg-soft)}
.register-lead{text-align:center;color:var(--slate);margin-bottom:30px}
#waitlist-form{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:34px;box-shadow:var(--shadow);
}
.field{margin-bottom:20px}
.field label{display:block;font-weight:700;color:var(--navy);margin-bottom:8px;font-size:.95rem}
.req{color:#dc2626;font-size:.74rem;font-weight:700;margin-left:6px}
.opt{color:var(--slate);font-size:.74rem;font-weight:600;margin-left:6px}
.field input,.field select{
  width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:10px;
  font-size:1rem;font-family:inherit;background:#fff;color:var(--ink);
}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(43,108,255,.15)}
.form-note{font-size:.78rem;color:var(--slate);margin-top:14px;text-align:center}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}

.form-success{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:48px 34px;text-align:center;box-shadow:var(--shadow);
}
.success-check{
  width:64px;height:64px;border-radius:50%;background:var(--ok);color:#fff;
  font-size:2rem;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.form-success h3{color:var(--navy);font-size:1.4rem;margin-bottom:10px}
.form-success p{color:var(--slate)}

/* ── Footer ───────────────────────────────────── */
.site-footer{background:var(--navy);color:#aebfd6;padding:54px 0 40px;font-size:.9rem}
.footer-brand{color:#fff;font-weight:800;font-size:1.2rem;margin-bottom:18px}
.footer-brand span{font-size:.74rem;font-weight:600;color:#8fa3c2;margin-left:6px}
.footer-company{margin-bottom:18px;line-height:1.9}
.footer-company a{color:#7fa8ff}
.footer-legal{font-size:.78rem;color:#7e90ad;max-width:760px;margin-bottom:18px}
.footer-copy{font-size:.8rem;color:#6b7e9c}

/* ── Responsive ───────────────────────────────── */
@media (max-width:760px){
  .nav-links{gap:14px}
  .nav-links a:not(.btn){display:none}
  .feature-grid,.why-grid,.trust-grid{grid-template-columns:1fr}
  .flow-arrow{transform:rotate(90deg)}
  .section{padding:56px 0}
  .hero{padding:64px 0 72px}
}