/* アカ守り — 実機SNS運用クラウド / getting-customers site
   Design: enterprise trust. Ink navy + champagne gold accent, generous whitespace. */

:root {
  --ink: #0e1d31;
  --ink-2: #17293f;
  --gold: #9c7e52;
  --gold-2: #b89b6e;
  --paper: #ffffff;
  --mist: #f5f7fa;
  --line: #e4e8ee;
  --text: #253242;
  --muted: #5c6b7d;
  --ok: #1f7a5a;
  --radius: 14px;
  --wrap: 1080px;
  --shadow: 0 12px 40px rgba(14, 29, 49, 0.10);
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.85;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--gold); }

/* ---- header ---- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { font-weight: 800; letter-spacing: .02em; color: var(--ink); font-size: 19px; }
.brand span { color: var(--gold); }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 14.5px; font-weight: 600; }
.nav-links a:hover { color: var(--ink); }
.btn {
  display: inline-block; background: var(--ink); color: #fff !important;
  padding: 11px 22px; border-radius: 999px; font-weight: 700; font-size: 14.5px;
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); color: #fff !important; }
.btn-gold { background: linear-gradient(135deg, var(--gold), var(--gold-2)); }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-ghost { background: transparent; color: var(--ink) !important; border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink); }

/* ---- hero ---- */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(156,126,82,.14), transparent 60%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  color: #eaf0f7; padding: 92px 0 104px; position: relative; overflow: hidden;
}
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14);
  padding: 7px 15px; border-radius: 999px; font-size: 13px; font-weight: 600;
  color: #cdd8e6; margin-bottom: 26px;
}
.hero h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.28; letter-spacing: .01em; color: #fff; font-weight: 800; }
.hero h1 em { font-style: normal; color: var(--gold-2); }
.hero p.lead { margin-top: 22px; font-size: clamp(16px, 2.2vw, 19px); color: #b9c6d6; max-width: 620px; }
.hero-cta { margin-top: 38px; display: flex; gap: 14px; flex-wrap: wrap; }
.trust-row { margin-top: 46px; display: flex; gap: 30px; flex-wrap: wrap; }
.trust-row .ti { display: flex; align-items: flex-start; gap: 11px; max-width: 300px; }
.trust-row .ti b { color: #fff; display: block; font-size: 15px; }
.trust-row .ti span { color: #9fb0c3; font-size: 13.5px; line-height: 1.6; }
.check { color: var(--gold-2); font-weight: 900; flex: none; }

/* ---- sections ---- */
section { padding: 84px 0; }
section.mist { background: var(--mist); }
.kicker { color: var(--gold); font-weight: 800; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
h2.sec { font-size: clamp(24px, 3.4vw, 34px); line-height: 1.4; color: var(--ink); margin: 12px 0 8px; font-weight: 800; }
.sub { color: var(--muted); max-width: 640px; margin-bottom: 44px; }

.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .18s, box-shadow .18s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card .ic { width: 46px; height: 46px; border-radius: 12px; background: var(--mist);
  display: grid; place-items: center; font-size: 22px; margin-bottom: 16px; }
.card h3 { font-size: 18.5px; color: var(--ink); margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.6px; }

/* problem list */
.plist { display: grid; gap: 14px; }
.plist .row { display: flex; gap: 14px; align-items: flex-start; background: #fff;
  border: 1px solid var(--line); border-left: 3px solid var(--gold); border-radius: 10px; padding: 18px 20px; }
.plist .row b { color: var(--ink); }
.plist .row p { color: var(--muted); font-size: 14.5px; margin-top: 3px; }

/* compliance banner */
.compliance { background: linear-gradient(135deg, var(--ink), var(--ink-2)); }
.badge-row { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 30px; }
.badge { display: flex; align-items: center; gap: 10px; background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14); padding: 14px 20px; border-radius: 12px; color: #eaf0f7; font-weight: 600; font-size: 14.5px; }

/* pricing */
.price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; align-items: stretch; }
.price { border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; background: #fff; }
.price.feat { border: 2px solid var(--gold); box-shadow: var(--shadow); position: relative; }
.price.feat::before { content: "推奨"; position: absolute; top: -12px; left: 28px;
  background: var(--gold); color: #fff; font-size: 12px; font-weight: 800; padding: 4px 12px; border-radius: 999px; }
.price h3 { color: var(--ink); font-size: 20px; }
.price .amt { font-size: 34px; font-weight: 800; color: var(--ink); margin: 10px 0 4px; }
.price .amt small { font-size: 15px; color: var(--muted); font-weight: 600; }
.price ul { list-style: none; margin: 18px 0 24px; }
.price li { padding: 7px 0 7px 26px; position: relative; color: var(--text); font-size: 14.6px; }
.price li::before { content: "✓"; position: absolute; left: 0; color: var(--ok); font-weight: 900; }

/* blog cards */
.posts { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.post { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; transition: transform .18s, box-shadow .18s; }
.post:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.post .top { height: 8px; background: linear-gradient(90deg, var(--ink), var(--gold)); }
.post .body { padding: 24px; }
.post .tag { color: var(--gold); font-size: 12px; font-weight: 800; letter-spacing: .05em; }
.post h3 { font-size: 17px; color: var(--ink); margin: 8px 0 10px; line-height: 1.5; }
.post p { color: var(--muted); font-size: 13.8px; }

/* CTA */
.cta { background: linear-gradient(135deg, var(--ink), var(--ink-2)); color: #fff; text-align: center; border-radius: 22px; padding: 60px 28px; margin: 0 auto; }
.cta h2 { color: #fff; font-size: clamp(22px,3vw,30px); }
.cta p { color: #b9c6d6; margin: 14px auto 30px; max-width: 500px; }

/* footer */
footer { background: var(--ink); color: #9fb0c3; padding: 56px 0 40px; font-size: 14px; }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
footer .brand { color: #fff; font-size: 18px; }
footer a { color: #9fb0c3; display: block; padding: 5px 0; }
footer a:hover { color: #fff; }
footer .fine { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px; color: #6b7c90; font-size: 12.5px; }
.disc { background: var(--mist); border: 1px solid var(--line); border-radius: 12px; padding: 20px 24px; color: var(--muted); font-size: 13.5px; margin-top: 26px; }

/* ---- article ---- */
.article { max-width: 760px; margin: 0 auto; padding: 56px 24px 40px; }
.crumbs { color: var(--muted); font-size: 13px; margin-bottom: 20px; }
.crumbs a { color: var(--muted); }
.article h1 { font-size: clamp(26px, 4vw, 38px); line-height: 1.4; color: var(--ink); font-weight: 800; margin-bottom: 14px; }
.meta { color: var(--muted); font-size: 13.5px; margin-bottom: 8px; }
.article h2 { font-size: 23px; color: var(--ink); margin: 44px 0 14px; padding-top: 14px; border-top: 2px solid var(--line); font-weight: 800; }
.article h3 { font-size: 18.5px; color: var(--ink-2); margin: 30px 0 10px; }
.article p { margin: 14px 0; color: var(--text); }
.article ul, .article ol { margin: 14px 0 14px 4px; padding-left: 24px; }
.article li { margin: 8px 0; }
.article strong { color: var(--ink); }
.toc { background: var(--mist); border: 1px solid var(--line); border-radius: 12px; padding: 22px 26px; margin: 26px 0 34px; }
.toc b { color: var(--ink); font-size: 14px; }
.toc ol { margin: 10px 0 0 20px; }
.toc a { color: var(--muted); font-size: 14.5px; }
.callout { background: linear-gradient(135deg, #fbf8f2, #f5f0e6); border: 1px solid #e8dcc4; border-radius: 12px; padding: 22px 26px; margin: 30px 0; }
.callout b { color: var(--ink); }
.faq { margin-top: 20px; }
.faq details { border: 1px solid var(--line); border-radius: 10px; padding: 4px 20px; margin: 12px 0; background: #fff; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 14px 0; }
.faq p { margin: 0 0 16px; color: var(--muted); font-size: 14.6px; }
.inline-cta { background: var(--ink); color: #fff; border-radius: 16px; padding: 32px 30px; margin: 40px 0; text-align: center; }
.inline-cta h3 { color: #fff; font-size: 20px; margin-bottom: 10px; }
.inline-cta p { color: #b9c6d6; margin-bottom: 20px; font-size: 14.5px; }
.related { border-top: 2px solid var(--line); margin-top: 50px; padding-top: 30px; }
.related b { color: var(--ink); }
.related a { display: block; padding: 10px 0; color: var(--ink); border-bottom: 1px solid var(--line); font-weight: 600; font-size: 15px; }
.related a:hover { color: var(--gold); }

@media (max-width: 860px) {
  .grid-3, .grid-2, .price-grid, .posts, footer .cols { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hero { padding: 64px 0 72px; }
  section { padding: 60px 0; }
}