/* ===== Tokens ===== */
:root{
  --max: 1200px;
  --pad: 24px;
  --radius: 16px;
  --line: #e8ecf3;
  --bg: #ffffff;
  --bg-soft: #f7f9fd;
  --card: #ffffff;
  --fg: #0f1720;
  --muted: #576074;
  --accent: #0066ff;
  --accent-2: #00c2ff;
  --shadow: 0 20px 50px rgba(15,23,32,.10);
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root{
    --line: #222a35; --bg:#0b0d10; --bg-soft:#0f1318; --card:#11161d;
    --fg:#eaf0f7; --muted:#a9b3c2; --accent:#78c6ff; --accent-2:#3ea6ff;
    --shadow: 0 20px 50px rgba(0,0,0,.45);
    color-scheme: dark;
  }
}

/* ===== Base ===== */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 600px at 10% -10%, color-mix(in oklab, var(--accent) 10%, transparent), transparent),
    radial-gradient(1000px 500px at 90% -20%, color-mix(in oklab, var(--accent-2) 10%, transparent), transparent),
    var(--bg);
  color: var(--fg);
}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-2)}
.container{max-width:var(--max); margin:0 auto; padding:0 var(--pad)}

/* ===== Header ===== */
.site-header{
  position:sticky; top:0; z-index:50;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}

/* 重なり対策：ブランド一式を1定義に整理 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--fg);
  white-space:nowrap;
}
.logo{
  display:block;
  width:28px;
  height:28px;
  flex:0 0 28px;
  border-radius:10px;
  background: conic-gradient(from 180deg, #7dd3fc, #818cf8, #60a5fa, #22d3ee, #7dd3fc);
}
.brand-name{
  letter-spacing:.2px;
  line-height:1;
}

.nav a{color:var(--muted);margin-left:18px;font-weight:600}
.nav a.nav-buy{color:var(--fg)}
.nav a:hover{color:var(--accent)}

/* ヘッダー内の「トップに戻る」ボタンだけは見やすい透明ボタンに */
header .btn{
  background: transparent !important;
  color: var(--fg) !important;
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}
header .btn:hover{
  background: color-mix(in oklab, var(--accent) 8%, transparent);
}

/* ===== Hero ===== */
.hero{padding:48px 0 18px; background:linear-gradient(180deg, transparent, color-mix(in oklab, var(--bg-soft) 60%, transparent))}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.kicker{color:var(--accent);font-weight:700;letter-spacing:.02em;margin-bottom:10px}
.hero-title{font-size: clamp(28px, 3.4vw, 46px);line-height:1.15;margin: 6px 0 12px}
.hero-sub{color:var(--muted);margin:0 0 16px}
.chip{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:8px 12px;background:color-mix(in oklab, var(--bg-soft) 70%, transparent)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:12px 0 8px}
.btn{
  --bgbtn:#0f1720; --fgbtn:#fff; --bd:#0f1720;
  padding:13px 18px;border-radius:12px;border:1px solid var(--bd);
  background:var(--bgbtn);color:var(--fgbtn);cursor:pointer;transition:transform .15s ease, box-shadow .15s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{--bgbtn:linear-gradient(180deg, var(--accent), var(--accent-2)); --fgbtn:#031022; --bd:transparent; box-shadow:0 8px 28px rgba(60,140,255,.35)}
.btn-secondary{--bgbtn:color-mix(in oklab, var(--card) 86%, transparent); --fgbtn:var(--fg); --bd:var(--line)}
.hero-bullets{margin:10px 0 6px; padding-left:18px; color:var(--muted)}
.hero-bullets li{margin:4px 0}
.note{font-size:.9rem;color:var(--muted);margin-top:6px}
.hero-media .media-frame{
  border-radius:calc(var(--radius)+6px); padding:10px; border:1px solid var(--line);
  background:linear-gradient(135deg, color-mix(in oklab, var(--accent) 18%, transparent), color-mix(in oklab, var(--accent-2) 18%, transparent));
  box-shadow:var(--shadow);
}
.hero-video{
  width:100%;
  display:block;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:calc(var(--radius)-2px);
  background:#000;
}

/* trust bar → ul想定・中央寄せ */
.trustbar{
  display:flex;gap:24px;align-items:center;justify-content:center;
  margin-top:18px;color:var(--muted);font-weight:600;flex-wrap:wrap;list-style:none;padding:0
}

/* ===== Sections ===== */
.section{padding:38px 0;border-top:1px solid var(--line)}
.sec-title{margin:0 0 16px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card h3{margin:8px 0 8px}
.card p{margin:0;color:var(--muted)}
.card-ic{font-size:24px}

/* steps */
.steps{margin:8px 0 0 20px;color:var(--fg)}
.steps li{margin:6px 0;color:var(--muted)}

/* ===== pricing（高さ揃え & ボタン下寄せ対応） ===== */
.pricing{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.plan{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:calc(var(--radius)+2px);padding:20px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;min-height:100%;
}
.plan-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.plan-name{font-weight:800}
.plan-tag{color:var(--muted);font-size:.9rem;border:1px solid var(--line);padding:4px 8px;border-radius:999px}
.plan-price{font-size:1.9rem;margin:4px 0 12px}
.plan-list{margin:0 0 14px 18px;color:var(--muted)}
.plan-spacer{flex:1}
.plan .full{margin-top:12px}
.plan.highlight{outline:1.6px solid color-mix(in oklab, var(--accent) 65%, transparent)}
.plan-badge{position:absolute;top:-10px;right:14px;background:linear-gradient(180deg, var(--accent), var(--accent-2));color:#031022;padding:6px 10px;font-weight:800;border-radius:999px;border:1px solid rgba(0,0,0,.05)}
.full{width:100%}

/* ===== FAQ ===== */
.faq details{border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--card);margin:10px 0}
.faq summary{cursor:pointer;font-weight:700;list-style:none}
.faq p{color:var(--muted)}

/* ===== Footer（HTMLの .footer / .legal-links に対応） ===== */
.footer{border-top:1px solid var(--line);padding:28px 0 44px;background:var(--bg)}
.legal-links{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.legal-links a{color:var(--muted)}
.legal-links a:hover{color:var(--fg)}

/* ===== Sticky CTA ===== */
.sticky-cta{
  position:sticky;bottom:0;left:0;right:0;display:flex;gap:10px;justify-content:center;
  padding:10px;background: color-mix(in oklab, var(--bg) 82%, transparent);backdrop-filter: blur(8px);border-top:1px solid var(--line)
}

/* ===== Emphasize Standard (subtle) ===== */
.btn-contrast{
  --bgbtn: color-mix(in oklab, var(--accent) 18%, var(--card));
  --fgbtn: var(--fg);
  --bd: color-mix(in oklab, var(--accent) 48%, var(--line));
  padding:13px 18px; border-radius:12px; border:1px solid var(--bd);
  background: var(--bgbtn); color: var(--fgbtn);
  cursor:pointer; transition:transform .15s ease, box-shadow .15s ease;
  box-shadow: 0 6px 20px color-mix(in oklab, var(--accent) 20%, transparent);
}
.btn-contrast:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 28px color-mix(in oklab, var(--accent) 28%, transparent);
}
.plan.std{outline: 1.2px solid color-mix(in oklab, var(--accent) 40%, transparent)}
.plan.std .plan-name{color: color-mix(in oklab, var(--accent) 60%, var(--fg))}

/* ===== Responsive ===== */
@media (max-width: 1040px){
  .hero-grid{grid-template-columns:1fr;gap:22px}
  .cards{grid-template-columns:1fr}
  .pricing{grid-template-columns:1fr}
  .nav{display:none}
  .trustbar{justify-content:flex-start}
}

/* ==== Legal pages: top spacing ==== */
.page{ padding-top: 20px; }
@media (max-width: 1040px){
  .page{ padding-top: 16px; }
}