:root{--bg:#f5f9ff;--white:#fff;--blue:#1f66d1;--blue2:#2d8cff;--blue3:#eaf3ff;--navy:#102b4c;--text:#183653;--muted:#5b718a;--line:#d9e6f7;--green:#18a875;--orange:#d08315;--shadow:0 10px 28px rgba(20,68,125,.08);--shadow2:0 18px 48px rgba(20,68,125,.13)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;background:linear-gradient(180deg,#f9fcff,#f1f6ff);color:var(--text)}a{color:inherit;text-decoration:none}.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.top-inner{width:min(1120px,calc(100% - 24px));min-height:72px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:14px}.brand{display:flex;align-items:center;gap:11px}.mark{width:47px;height:47px;border-radius:15px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2));font-size:22px;font-weight:1000}.brand-main{font-size:23px;font-weight:1000;color:var(--navy);letter-spacing:-.04em}.brand-sub{font-size:11px;color:var(--muted);font-weight:800;margin-top:2px}.nav{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.nav a{padding:10px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:12px;font-weight:900}.nav a.primary{background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;border-color:transparent}.wrap{width:min(1120px,calc(100% - 24px));margin:auto;padding:24px 0 56px}.hero{padding:32px;border:1px solid var(--line);border-radius:30px;background:linear-gradient(135deg,#fff,#f2f7ff);box-shadow:var(--shadow2)}.kicker{display:inline-flex;padding:8px 12px;border-radius:999px;background:var(--blue3);color:var(--blue);font-size:12px;font-weight:1000;letter-spacing:.06em}.hero h1{margin:14px 0 12px;font-size:clamp(32px,5vw,52px);line-height:1.15;letter-spacing:-.05em;color:var(--navy)}.lead{margin:0;color:var(--muted);line-height:1.9;font-size:15px;font-weight:700}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-top:20px}.card{display:block;padding:20px;border:1px solid var(--line);border-radius:23px;background:#fff;box-shadow:var(--shadow);transition:.15s}.card:hover{transform:translateY(-2px);border-color:#bcd7fb}.cat{font-size:12px;color:var(--blue);font-weight:1000}.card h2,.card h3{margin:8px 0 9px;color:var(--navy);font-size:19px;line-height:1.45;letter-spacing:-.025em}.card p{margin:0;color:var(--muted);font-size:13px;line-height:1.75}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:20px;align-items:start}.article{padding:28px;border:1px solid var(--line);border-radius:28px;background:#fff;box-shadow:var(--shadow)}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:14px}.article h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-.045em;margin:8px 0 14px;color:var(--navy)}.meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.pill{display:inline-flex;padding:7px 11px;border-radius:999px;background:var(--blue3);color:var(--blue);font-size:12px;font-weight:900}.article .intro{padding:17px 18px;border-radius:18px;background:#f6f9ff;border:1px solid var(--line);font-size:15px;line-height:1.95;font-weight:700;color:#36526d}.article h2{margin:34px 0 12px;padding-bottom:9px;border-bottom:2px solid #e5effc;color:var(--navy);font-size:24px;letter-spacing:-.03em}.article p{font-size:15px;line-height:2;margin:0 0 14px}.article ul{padding-left:22px;line-height:1.9}.ad-slot{margin:28px 0;padding:0;min-height:0}.ad-slot:empty{display:none}.cta{margin-top:30px;padding:22px;border-radius:22px;background:linear-gradient(135deg,#113e72,#1f66d1);color:#fff}.cta h2{color:#fff;border:0;margin:0 0 8px;padding:0}.cta p{margin:0;color:#e6f0ff}.btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:15px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 16px;border-radius:14px;background:#fff;color:var(--blue);font-weight:1000}.btn.secondary{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.35);color:#fff}.side{position:sticky;top:92px}.sidebox{padding:18px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:var(--shadow);margin-bottom:14px}.sidebox strong{display:block;color:var(--navy);font-size:17px;margin-bottom:10px}.sidebox a{display:block;padding:10px 0;border-top:1px solid #edf3fb;font-size:13px;line-height:1.5;font-weight:800}.footer{text-align:center;color:var(--muted);font-size:12px;line-height:1.8;margin-top:35px}.category-head{margin-top:28px;color:var(--navy);font-size:27px}.notice{margin-top:16px;padding:14px 16px;border-radius:16px;background:#fff8e8;border:1px solid #f0dfb8;color:#765612;font-size:13px;line-height:1.7}.article-foot{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;line-height:1.8}
@media(max-width:820px){.top-inner{align-items:flex-start;padding:10px 0;flex-direction:column}.nav{width:100%;overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px}.nav a{white-space:nowrap}.grid{grid-template-columns:1fr}.article-layout{grid-template-columns:1fr}.side{position:static}.hero,.article{padding:20px}.wrap{padding-top:14px}.brand-main{font-size:21px}.hero h1{font-size:34px}.article h1{font-size:30px}}

.brand-logo-img{display:block;width:210px;height:auto;max-height:60px;object-fit:contain;border-radius:10px}.entity-note{display:flex;gap:12px;align-items:flex-start;margin:18px 0;padding:15px 17px;border:1px solid #e7cf8f;border-radius:18px;background:linear-gradient(135deg,#fffaf0,#f7fbff)}.entity-note strong{color:#8a6510;white-space:nowrap}.entity-note span{font-size:13px;line-height:1.75;color:#425b74}.article-figure{margin:22px 0 30px}.article-figure img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:22px;border:1px solid var(--line);box-shadow:var(--shadow)}.article-figure figcaption{margin-top:8px;color:var(--muted);font-size:11px;line-height:1.6}.screen-proof{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:22px;align-items:center;margin:30px 0;padding:22px;border-radius:24px;background:linear-gradient(135deg,#07192d,#102b4c);color:#fff}.screen-proof h2{color:#fff;border:0;margin:8px 0 10px;padding:0}.screen-proof p{color:#d8e6f4;margin:0}.screen-proof img{display:block;width:100%;height:auto;border-radius:18px;border:1px solid rgba(255,210,96,.45);box-shadow:0 16px 40px rgba(0,0,0,.25)}.proof-label{display:inline-flex;padding:6px 10px;border-radius:999px;background:#d9ad3b;color:#07192d;font-size:11px;font-weight:1000}.product-side p{font-size:12px;line-height:1.7;color:var(--muted);margin:0 0 10px}@media(max-width:820px){.brand-logo-img{width:190px;max-height:56px}.entity-note{flex-direction:column;gap:5px}.entity-note strong{white-space:normal}.screen-proof{grid-template-columns:1fr}.screen-proof img{width:min(100%,360px);margin:auto}}


.inline-scene{margin:24px 0 30px}.inline-scene img{display:block;width:100%;height:auto;max-height:520px;object-fit:cover;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow)}.inline-scene figcaption{margin-top:8px;color:var(--muted);font-size:11px;line-height:1.6}