:root{--color-brand:#0f172a;--color-accent:#2563eb;--color-accent-deep:#1d4ed8;--color-accent-soft:#2563eb1a;--color-cta:#ea580c;--color-cta-deep:#c2410c;--color-cta-soft:#ea580c1a;--color-surface:#fff;--color-muted:#f8fafc;--color-muted-2:#f1f5f9;--color-border:#e5e7eb;--color-ink:#0f172a;--color-ink-mid:#475569;--color-ink-sub:#94a3b8;--color-danger:#dc2626;--color-success:#16a34a;--shadow-card:0 1px 2px #0f172a0a, 0 8px 24px -12px #0f172a1f;--shadow-cta:0 10px 24px -10px #ea580c8c;--font-sans:"Noto Sans JP", system-ui, -apple-system, sans-serif;--radius-card:16px;--radius-control:12px;--max-w:720px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-ink);background:var(--color-muted);font-size:16px;line-height:1.75}a{color:var(--color-accent-deep)}img{max-width:100%;display:block}b,strong{font-weight:700}.wrap{max-width:var(--max-w);margin:0 auto;padding:0 20px}.hdr{background:var(--color-surface);border-bottom:1px solid var(--color-border);border-top:4px solid;border-image:linear-gradient(90deg, var(--color-accent), var(--color-cta)) 1}.hdr .wrap{justify-content:space-between;align-items:center;gap:12px;min-height:60px;display:flex}.brand{letter-spacing:.06em;color:var(--color-brand);white-space:nowrap;align-items:center;gap:10px;font-size:15px;font-weight:900;text-decoration:none;display:flex}.brand .logo{border-radius:9px;flex:none;width:36px;height:36px}.brand small{letter-spacing:.02em;color:var(--color-ink-mid);font-size:11px;font-weight:500;line-height:1.2;display:block}.tag{color:var(--color-ink-mid);white-space:nowrap;font-size:12px}@media (max-width:480px){.brand{letter-spacing:.04em;font-size:14px}.brand small{font-size:10px}.tag{white-space:normal;text-align:right;max-width:40%;font-size:11px;line-height:1.35}}.hero{padding:40px 0 20px}.hero 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var(--color-border);background:#fff;border-radius:12px;overflow:hidden}.labels{grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px;display:grid}.labels span{text-align:center;border-radius:6px;padding:4px 8px;font-size:12px;font-weight:700}.labels .before{color:#991b1b;background:#fef2f2}.labels .after{color:#166534;background:#f0fdf4}.btn{border-radius:var(--radius-control);cursor:pointer;border:0;justify-content:center;align-items:center;gap:8px;width:100%;min-height:54px;padding:0 18px;font-family:inherit;font-size:16px;font-weight:700;text-decoration:none;transition:transform .12s,background .2s,box-shadow .2s;display:inline-flex}.btn:active{transform:translateY(1px)scale(.99)}.btn.primary{background:var(--color-accent);color:#fff}.btn.primary:hover{background:var(--color-accent-deep)}.btn.cta{background:var(--color-cta);color:#fff;box-shadow:var(--shadow-cta);min-height:58px;font-size:17px}.btn.cta:hover{background:var(--color-cta-deep)}.btn.secondary{color:var(--color-accent-deep);border:2px solid var(--color-accent);background:0 0}.btn.secondary:hover{background:var(--color-accent-soft)}.btn:focus-visible{outline:3px solid var(--color-accent);outline-offset:2px}.micro{color:var(--color-ink-mid);text-align:center;margin-top:12px;font-size:13px;line-height:1.6}.note{color:var(--color-ink-mid);font-size:13px}.memo{gap:16px;display:grid}.memo .item{border:1px solid var(--color-border);border-radius:12px;overflow:hidden}.memo .item>div{border-top:1px solid var(--color-border);grid-template-columns:96px 1fr;gap:12px;padding:12px 14px;font-size:14px;line-height:1.7;display:grid}.memo .item>div:first-child{border-top:0}.memo .item .lbl{color:var(--color-ink-mid);padding-top:2px;font-size:12px;font-weight:700}.memo .item .now{background:var(--color-muted)}.memo .item .now p{font-weight:700}.memo .item .effect p{color:var(--color-ink-mid)}.memo .item .fix{background:#f0fdf4}.memo .item .fix .lbl{color:#166534}.memo .item .fix p{color:#166534;font-weight:700}.memo .item .num{background:var(--color-brand);color:#fff;text-align:center;border-radius:6px;min-width:22px;height:22px;margin-right:6px;font-size:12px;font-weight:700;line-height:22px;display:inline-block}.steps{counter-reset:st;gap:0;display:grid}.step{border-top:1px dashed var(--color-border);grid-template-columns:36px 1fr auto;align-items:start;gap:14px;padding:16px 0;display:grid}.step:first-child{border-top:0}.step 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span{color:var(--color-ink-mid);font-size:13px;display:block}.links{color:var(--color-ink-mid);gap:8px;margin-top:22px;font-size:13px;line-height:1.7;display:grid}.sticky{z-index:10;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-top:1px solid var(--color-border);padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:#fffffff5;position:fixed;bottom:0;left:0;right:0}.sticky .wrap{grid-template-columns:1fr auto;align-items:center;gap:8px;padding:0;display:grid}.sticky .btn.cta{min-height:50px;box-shadow:none;font-size:15px}.sticky a.small{color:var(--color-accent-deep);white-space:nowrap;padding:0 6px;font-size:13px;font-weight:700;text-decoration:none}.has-sticky{padding-bottom:104px}.frame{border:1px solid var(--color-border);background:#fff;border-radius:10px;width:100%;height:720px}footer{color:var(--color-ink-mid);padding:40px 0 56px;font-size:12px;line-height:1.8}footer .wrap{border-top:1px solid var(--color-border);padding-top:24px}.pill{color:var(--color-accent-deep);background:var(--color-accent-soft);border-radius:999px;padding:3px 10px;font-size:12px;font-weight:700;display:inline-block}@media (min-width:640px){.hero{padding:56px 0 28px}.hero h1{font-size:40px}.hero .catch{font-size:21px}.card{margin:32px 0;padding:40px 36px}.card h2{font-size:19px}.memo .item>div{grid-template-columns:150px 1fr}footer{padding:56px 0 72px}}@media (prefers-reduced-motion:reduce){*{transition:none!important}html{scroll-behavior:auto}}.form .field{margin:0 0 20px}.form label{margin-bottom:4px;font-size:14px;font-weight:700;display:block}.form label em{color:var(--color-ink-mid);background:var(--color-muted-2);vertical-align:middle;border-radius:999px;margin-left:6px;padding:1px 8px;font-size:11px;font-style:normal;font-weight:700}.form input,.form textarea{width:100%;font:inherit;min-height:50px;color:var(--color-ink);background:#fff;border:1px solid #cbd5e1;border-radius:10px;padding:12px 14px;font-size:16px}.form textarea{resize:vertical;min-height:96px}.form input:focus,.form textarea:focus{outline:3px solid var(--color-accent-soft);border-color:var(--color-accent)}.form small{color:var(--color-ink-mid);margin-top:4px;font-size:12px;display:block}.form .field.bad input{border-color:var(--color-danger)}.form .btn{margin-top:10px}.err{color:#991b1b;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;margin-bottom:12px;padding:10px 12px;font-size:14px}.progress{grid-template-columns:repeat(4,1fr);gap:6px;margin:18px 0 8px;list-style:none;display:grid}.progress li{color:var(--color-ink-sub);border-top:3px solid var(--color-border);grid-template-columns:24px 1fr;align-items:center;gap:6px;padding-top:6px;font-size:12px;display:grid}.progress li i{background:var(--color-border);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;font-style:normal;font-weight:700;display:flex}.progress li.done{color:var(--color-ink-mid);border-top-color:var(--color-success)}.progress li.done i{background:var(--color-success)}.progress li.now{color:var(--color-ink);border-top-color:var(--color-cta);font-weight:700}.progress li.now i{background:var(--color-cta)}.summary{border:1px solid var(--color-border);border-radius:12px;gap:0;display:grid;overflow:hidden}.summary>div{border-top:1px solid var(--color-border);grid-template-columns:110px 1fr;gap:12px;padding:12px 14px;font-size:14px;display:grid}.summary>div:first-child{border-top:0}.summary dt{color:var(--color-ink-mid);padding-top:2px;font-size:12px;font-weight:700}.summary dd{white-space:pre-wrap;margin:0}@media (max-width:420px){.progress li span{display:none}.progress li{grid-template-columns:24px;justify-content:center}}.proofs{grid-template-columns:1fr;gap:20px;display:grid}.proof{margin:0}.proof figcaption{color:var(--color-ink-mid);margin-bottom:8px;font-size:13px;font-weight:700}.proof img{border:1px solid var(--color-border);background:#fff;border-radius:12px;width:100%;height:auto}@media (min-width:640px){.proofs{grid-template-columns:1fr 1fr;gap:24px}}