/* ====== ハゼ日記 LP 共通スタイル ====== */
:root {
  --color-primary: #2563EB; /* 青 */
  --color-secondary: #10B981; /* 緑 */
  --color-accent: #F59E0B; /* オレンジ */
  --color-bg: #F9FAFB; /* 薄グレー */
  --color-text: #0F172A; /* 濃紺系 */
  --color-muted: #6B7280;

  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;

  --max-w: 1080px;
  --shadow-sm: 0 2px 8px rgba(15,23,42,0.06);
  --shadow-md: 0 8px 24px rgba(15,23,42,0.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 16px; }

/* Header */
.header { position: sticky; top: 0; background: #fff; border-bottom: 1px solid #E5E7EB; z-index: 40; }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:56px; }
.brand { display:flex; align-items:center; gap:10px; font-weight:700; }
.brand-badge { width:28px; height:28px; border-radius:8px; background: linear-gradient(135deg, var(--color-primary), var(--color-secondary)); box-shadow: var(--shadow-sm); }
.nav { display:none; gap:20px; }
.nav a { color: var(--color-muted); font-weight:600; }
.nav a:hover { color: var(--color-text); }
.menu-btn { background:transparent; border:0; width:40px; height:40px; }

@media (min-width: 768px) { .nav { display:flex; } .menu-btn { display:none; } }

/* Mobile menu */
.mobile-nav { display:none; border-top:1px solid #E5E7EB; background:#fff; }
.mobile-nav.open { display:block; }
.mobile-nav a { display:block; padding:14px 16px; border-bottom:1px solid #F3F4F6; color: var(--color-muted); font-weight:600; }

/* Hero */
.hero { background: radial-gradient(1200px 600px at 50% -200px, rgba(37,99,235,0.10), transparent), #fff; }
.hero-inner { padding: 40px 0 24px; display:grid; gap:20px; }
.hero h1 { font-size: clamp(22px, 6vw, 34px); line-height:1.25; margin:0; }
.hero p { margin:8px 0 0; color: var(--color-muted); }
.cta { display:flex; gap:12px; margin-top:16px; }
.btn-primary { background: var(--color-primary); color:#fff; padding:14px 18px; border-radius: var(--radius-lg); font-weight:700; box-shadow: var(--shadow-sm); }
.btn-outline { border:1.5px solid #CBD5E1; padding:14px 18px; border-radius: var(--radius-lg); font-weight:700; background:#fff; }
.badge { display:inline-block; padding:6px 10px; background: #EEF2FF; color: var(--color-primary); border-radius: 999px; font-size:12px; font-weight:700; }
.phone-mock { border-radius: 28px; overflow:hidden; box-shadow: var(--shadow-md); border: 8px solid #0F172A; background:#000; }

@media (min-width: 960px) {
  .hero-inner { grid-template-columns: 1.1fr 0.9fr; align-items:center; padding: 64px 0 40px; }
}

/* Sections */
.section { padding: 40px 0; background:#fff; margin: 16px 0; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.section h2 { font-size: 20px; margin: 0 0 8px; }
.section p.lead { color: var(--color-muted); margin: 0 0 16px; }

/* 3-column features */
.features { display:grid; gap:14px; }
.feature { background:#fff; border:1px solid #E5E7EB; border-radius: var(--radius-md); padding:16px; box-shadow: var(--shadow-sm); }
.feature h3 { margin:6px 0 4px; font-size:16px; }
.feature p { color: var(--color-muted); font-size:14px; margin:0; }
@media (min-width: 640px){ .features{ grid-template-columns: repeat(2, 1fr);} }
@media (min-width: 960px){ .features{ grid-template-columns: repeat(3, 1fr);} }

/* Steps */
.steps { display:grid; gap:12px; }
.step { display:flex; gap:12px; align-items:flex-start; background:#F8FAFC; border:1px solid #E5E7EB; padding:12px; border-radius: var(--radius-md); }
.step .num { width:28px; height:28px; border-radius:999px; background: var(--color-secondary); color:#fff; display:grid; place-items:center; font-weight:800; }

/* Roadmap */
.list { margin:0; padding-left:18px; color: var(--color-text); }
.list li { margin:6px 0; }

/* Footer */
.footer { padding:24px 0 40px; color: var(--color-muted); font-size:14px; }
.footer a { color: var(--color-muted); text-decoration: underline; }

/* Utilities */
.muted { color: var(--color-muted); }
.center { text-align:center; }
.spacer-sm { height:8px; }
.spacer-md { height:16px; }
.spacer-lg { height:28px; }