:root { --bg: #0a0a0f; --surface: #14141c; --line: rgba(255, 255, 255, 0.1); --text: #f2f2f5; --muted: #a0a0aa; --accent: #c9a86a; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Noto Sans JP", "Inter", sans-serif; background: var(--bg); color: var(--text); line-height: 1.9; font-weight: 300; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
header { border-bottom: 1px solid var(--line); padding: 18px 0; position: sticky; top: 0; background: rgba(10, 10, 15, 0.85); backdrop-filter: blur(10px); z-index: 10; }
header .wrap { display: flex; align-items: center; justify-content: space-between; }
header img { height: 26px; }
.cta-btn { display: inline-block; background: var(--accent); color: #14141c; padding: 10px 22px; border-radius: 6px; font-weight: 700; text-decoration: none; font-size: 14px; }
.hero { padding: 72px 0 56px; }
.hero .eyebrow { color: var(--accent); letter-spacing: 0.12em; font-size: 13px; font-weight: 500; margin-bottom: 20px; }
.hero h1 { font-size: clamp(28px, 6vw, 44px); font-weight: 700; line-height: 1.4; letter-spacing: 0.01em; margin-bottom: 24px; }
.hero h1 .hl { color: var(--accent); }
.hero .lead { color: var(--muted); font-size: 17px; margin-bottom: 36px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero .actions .ghost { border: 1px solid var(--line); padding: 10px 22px; border-radius: 6px; text-decoration: none; font-size: 14px; font-weight: 500; }
.video-frame { margin: 8px 0 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); aspect-ratio: 16 / 9; background: var(--surface); }
.video-frame img { width: 100%; height: 100%; object-fit: cover; display: block; }
.definition { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 0 8px 8px 0; padding: 20px 24px; margin: 8px 0 0; }
.definition p { margin: 0; color: #d8d8de; }
section { padding: 48px 0; border-top: 1px solid var(--line); }
h2 { font-size: clamp(22px, 4.5vw, 30px); font-weight: 700; margin-bottom: 24px; line-height: 1.5; }
h3 { font-size: 19px; font-weight: 500; margin: 32px 0 12px; color: var(--text); }
p { margin-bottom: 18px; color: #d8d8de; }
.muted { color: var(--muted); }
.lead-conclusion { color: var(--accent); font-weight: 500; }
ul.checks { list-style: none; margin: 18px 0; }
ul.checks li { padding: 10px 0 10px 28px; position: relative; border-bottom: 1px solid var(--line); color: #d8d8de; }
ul.checks li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.steps { counter-reset: step; margin-top: 24px; }
.step { display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.step .num { flex: none; width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--accent); color: var(--accent); display: flex; align-items: center; justify-content: center; font-weight: 700; }
.step h4 { font-size: 16px; font-weight: 500; margin-bottom: 4px; }
.step p { margin: 0; font-size: 15px; color: var(--muted); }
.tier-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:14px; margin:24px 0; }
.tier { background: var(--surface); border:1px solid var(--line); border-radius:12px; padding:22px; }
.tier .name { color: var(--accent); font-weight:500; margin:0 0 8px; }
.tier p { font-size:14px; color:var(--muted); margin:0; }
.faq-item { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq-item .q { font-weight: 500; margin-bottom: 8px; }
.faq-item .q::before { content: "Q. "; color: var(--accent); }
.faq-item .a { color: var(--muted); font-size: 15px; margin: 0; }
.final-cta { text-align: center; padding: 64px 0; }
.final-cta h2 { margin-bottom: 16px; }
.final-cta p { margin-bottom: 28px; }
.related { font-size: 14px; }
.related a { color: var(--accent); text-decoration: none; margin-right: 20px; }
footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: 13px; color: var(--muted); }
footer a { color: var(--muted); }