:root{--navy:#0b1e2e;--blue:#155eef;--cyan:#55d9d3;--paper:#f7f8f6;--white:#fff;--ink:#13202a;--muted:#5c6973;--line:#dbe1e4;--amber:#f2b84b;--shadow:0 18px 50px rgba(11,30,46,.1)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.8}a{color:var(--blue);text-underline-offset:3px}.wrap{width:min(1120px,calc(100% - 32px));margin:auto}.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-in{min-height:68px;display:flex;align-items:center;gap:24px}.brand{text-decoration:none;color:var(--navy);font-weight:950;letter-spacing:-.04em;font-size:1.18rem}.brand i{font-style:normal;color:var(--blue)}nav{display:flex;gap:18px;margin-left:auto}nav a{text-decoration:none;color:var(--navy);font-weight:750;font-size:.92rem}.menu{display:none;margin-left:auto;border:0;background:#eaf0ff;padding:8px 11px;border-radius:9px}.hero{background:radial-gradient(circle at 88% 12%,rgba(85,217,211,.4),transparent 25%),linear-gradient(135deg,#071824,#143b61);color:#fff;padding:76px 0 54px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}.eyebrow{font-size:.76rem;letter-spacing:.16em;font-weight:900;color:var(--cyan);margin:0 0 8px}.hero h1,.page-head h1{font-size:clamp(2.3rem,5vw,4.6rem);line-height:1.06;letter-spacing:-.06em;margin:.15em 0 .35em}.hero h1 span{color:var(--cyan)}.lead{font-size:1.08rem;color:#dce7ef}.hero-points{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.hero-points span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);padding:8px 12px;border-radius:999px;font-size:.86rem}.tool{background:#fff;color:var(--ink);padding:25px;border-radius:22px;box-shadow:var(--shadow)}.tool h2{margin:0;font-size:1.35rem}.tool p{color:var(--muted);margin-top:4px}.questions{display:grid;gap:12px}.q{border:1px solid var(--line);border-radius:12px;padding:11px}.q b{display:block;font-size:.9rem}.choices{display:flex;gap:7px;margin-top:7px}.choices label{flex:1}.choices input{position:absolute;opacity:0}.choices span{display:block;text-align:center;border:1px solid #c7d0d7;padding:7px;border-radius:8px;font-size:.82rem;cursor:pointer}.choices input:checked+span{border-color:var(--blue);background:#eaf0ff;color:var(--blue);font-weight:800}.result{background:#eef6ff;border-radius:12px;padding:14px;margin-top:14px}.result strong{font-size:1.1rem}.button{display:inline-block;background:var(--blue);color:#fff;text-decoration:none;padding:12px 18px;border-radius:10px;font-weight:900;border:0;cursor:pointer}.section{padding:66px 0}.section.white{background:#fff}.section h2{font-size:clamp(1.65rem,3vw,2.5rem);line-height:1.25;letter-spacing:-.035em;margin:0 0 10px}.intro{color:var(--muted);max-width:48rem}.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}.flow div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.flow b{display:block;color:var(--blue);font-size:.8rem}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.card{background:#fff;border:1px solid var(--line);border-radius:17px;padding:21px;box-shadow:0 8px 26px rgba(11,30,46,.05)}.card .tag{font-size:.75rem;font-weight:900;color:var(--blue);background:#edf3ff;padding:4px 9px;border-radius:999px}.card h3{line-height:1.4;margin:12px 0 8px}.card p{font-size:.92rem;color:var(--muted)}.card a{font-weight:850}.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}.matrix div{background:var(--navy);color:#fff;border-radius:16px;padding:22px}.matrix b{display:block;color:var(--cyan);font-size:1.2rem}.matrix small{color:#c7d5df}.page-head{background:linear-gradient(135deg,#eaf1ff,#f8fbff);padding:58px 0 38px;border-bottom:1px solid var(--line)}.page-head h1{font-size:clamp(2rem,5vw,3.55rem);max-width:900px}.crumb{font-size:.84rem;color:var(--muted)}.article-grid{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:42px;align-items:start}.article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(24px,5vw,52px)}.article h2{font-size:1.65rem;line-height:1.35;margin-top:2.25em}.answer{background:#eef6ff;border-left:5px solid var(--blue);padding:19px;border-radius:10px}.check{list-style:none;padding:0}.check li{border-bottom:1px solid var(--line);padding:10px 0 10px 29px;position:relative}.check li:before{content:"✓";position:absolute;left:4px;color:var(--blue);font-weight:950}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.steps div{background:#edf3ff;border-radius:10px;padding:12px 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a{color:#fff}.fine{font-size:.8rem;color:#6b7780}.adlabel{font-size:.75rem;letter-spacing:.1em;color:#8aa1b1;font-weight:800}@media(max-width:820px){.hero-grid,.article-grid{grid-template-columns:1fr}.cards,.matrix{grid-template-columns:1fr 1fr}.flow{grid-template-columns:1fr 1fr}.toc{position:static}.header-in{flex-wrap:wrap;padding:9px 0}.menu{display:block}nav{display:none;width:100%;margin:0;padding-bottom:9px;flex-wrap:wrap}nav.open{display:flex}.steps{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}@media(max-width:540px){.cards,.matrix,.flow{grid-template-columns:1fr}.hero{padding-top:45px}.hero h1{font-size:2.55rem}.wrap{width:min(100% - 24px,1120px)}.article{padding:22px}}
.offer-actions{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}.offer-actions>a{display:inline-block;background:var(--cyan);color:#082331;text-decoration:none;padding:12px 18px;border-radius:10px;font-weight:900}.offer-actions>a:hover{filter:brightness(.96)}.affiliate small{display:block;margin-top:10px}.offer-actions img{width:1px;height:1px}