@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Inter:wght@400;500;600;700;800&display=swap');

:root{
  --ink:#111111; --ink-2:#333; --muted:#6b6b6b; --line:#E5E5E5; --line-2:#BDBDBD;
  --bg:#fff; --soft:#F7F7F7; --dark:#111; --high:#B42318; --med:#B5530A; --ok:#067647;
  --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans JP','Inter',-apple-system,sans-serif;color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;font-feature-settings:"palt";
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.en{font-family:'Inter',sans-serif}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:20px;height:62px;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.logo{font-weight:900;font-size:18px;letter-spacing:.01em}
.logo .dot{color:var(--muted);font-weight:500;font-size:11px;letter-spacing:.18em;margin-left:8px;font-family:'Inter',sans-serif}
.nav-links{margin-left:auto;display:flex;gap:26px;align-items:center}
.nav-links a{font-size:13px;color:var(--muted);font-weight:500}
.nav-links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:14px;
  padding:11px 20px;border-radius:8px;border:1px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;transition:opacity .15s,transform .05s}
.btn:hover{opacity:.86}
.btn:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--ink)}
.btn-ghost:hover{background:var(--soft);opacity:1}
.btn-lg{padding:15px 28px;font-size:15px;border-radius:10px}

/* hero */
.hero{padding:84px 0 56px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'Inter',sans-serif;font-size:12px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line-2);border-radius:999px;padding:5px 14px;margin-bottom:24px}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok)}
.hero h1{font-size:50px;font-weight:900;line-height:1.28;letter-spacing:.01em}
.hero h1 .u{background:linear-gradient(transparent 64%, #EDEDED 64%)}
.hero .sub{font-size:18px;color:var(--ink-2);margin-top:22px;max-width:620px;line-height:1.85}
.hero .cta{display:flex;gap:12px;margin-top:34px;flex-wrap:wrap}
.hero .micro{margin-top:16px;font-size:12.5px;color:var(--muted)}
.hero-vis{margin-top:54px;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 30px 60px -30px rgba(0,0,0,.22)}
.hero-vis .bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid var(--line);background:var(--soft)}
.hero-vis .bar i{width:11px;height:11px;border-radius:50%;background:var(--line-2);display:block}
.hero-vis .bar span{margin-left:10px;font-family:'Inter',monospace;font-size:12px;color:var(--muted)}
.flowmock{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0}
.flowmock .col{padding:26px 22px;border-right:1px solid var(--line)}
.flowmock .col:last-child{border-right:none}
.flowmock .step{font-family:'Inter',sans-serif;font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--muted)}
.flowmock .ttl{font-weight:700;font-size:15px;margin:8px 0 12px}
.fm-file{display:flex;align-items:center;gap:8px;font-family:'Inter',monospace;font-size:11.5px;color:var(--ink-2);padding:5px 0;border-bottom:1px dashed var(--line)}
.fm-file::before{content:"";width:6px;height:6px;background:var(--line-2);border-radius:1px}
.fm-find{display:flex;align-items:center;justify-content:space-between;font-size:12px;padding:6px 0;border-bottom:1px dashed var(--line)}
.tag{display:inline-block;font-family:'Inter',sans-serif;font-size:10px;font-weight:700;padding:1px 7px;border-radius:999px}
.tag-h{color:var(--high);background:#FEF3F2}.tag-m{color:var(--med);background:#FFF6ED}.tag-l{color:var(--muted);background:var(--soft)}
.fm-deploy{margin-top:6px;background:var(--ink);color:#fff;border-radius:8px;padding:12px 14px;text-align:center}
.fm-deploy .u{font-family:'Inter',monospace;font-size:12px;color:#bdbdbd}
.fm-deploy .url{font-family:'Inter',monospace;font-size:13px;font-weight:600;margin-top:3px}
.fm-grade{display:flex;align-items:center;gap:12px}
.fm-ring{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-family:'Inter',sans-serif;font-weight:800;font-size:22px;background:var(--med)}

/* section */
section{padding:84px 0}
.sec-h{text-align:center;max-width:680px;margin:0 auto 52px}
.sec-k{font-family:'Inter',sans-serif;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.sec-h h2{font-size:34px;font-weight:900;line-height:1.4;margin-top:12px;letter-spacing:.01em}
.sec-h p{font-size:15.5px;color:var(--ink-2);margin-top:16px}
.alt{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* problem cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:26px 24px}
.card .n{font-family:'Inter',sans-serif;font-size:13px;font-weight:800;color:var(--muted)}
.card h3{font-size:18px;font-weight:800;margin:12px 0 8px;line-height:1.5}
.card p{font-size:14px;color:var(--ink-2);line-height:1.85}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.steps .s{padding:36px 30px;border-right:1px solid var(--line)}
.steps .s:last-child{border-right:none}
.steps .s .no{font-family:'Inter',sans-serif;font-size:34px;font-weight:800;color:var(--line-2);line-height:1}
.steps .s h3{font-size:19px;font-weight:800;margin:14px 0 10px}
.steps .s p{font-size:14px;color:var(--ink-2);line-height:1.85}
.steps .s .meta{margin-top:14px;font-family:'Inter',monospace;font-size:12px;color:var(--muted)}

/* diff / EPSS */
.diff{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.diff h2{font-size:30px;font-weight:900;line-height:1.45}
.diff p{font-size:15px;color:var(--ink-2);margin-top:18px;line-height:1.9}
.diff .feats{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.feat{display:flex;gap:13px;align-items:flex-start}
.feat .ck{flex:none;width:22px;height:22px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;margin-top:2px}
.feat b{font-weight:800}.feat span{display:block;font-size:13.5px;color:var(--muted);margin-top:2px}
.epss-card{border:1px solid var(--line);border-radius:14px;padding:28px;background:var(--bg)}
.epss-row{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line)}
.epss-row:last-child{border:none}
.epss-row .l{font-weight:700;font-size:14px}.epss-row .l span{display:block;font-size:11.5px;color:var(--muted);font-weight:400}
.bar{width:120px;height:8px;background:var(--soft);border-radius:999px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--ink)}
.prio{font-family:'Inter',sans-serif;font-weight:800;font-size:18px}

/* plans */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.plan{border:1px solid var(--line);border-radius:14px;padding:30px 26px;display:flex;flex-direction:column;background:var(--bg)}
.plan.feat-plan{border:2px solid var(--ink);position:relative}
.plan.feat-plan .ribbon{position:absolute;top:-12px;left:26px;background:var(--ink);color:#fff;font-family:'Inter',sans-serif;font-size:11px;font-weight:700;letter-spacing:.08em;padding:3px 12px;border-radius:999px}
.plan .pn{font-weight:800;font-size:18px}
.plan .pd{font-size:13px;color:var(--muted);margin-top:6px;min-height:40px}
.plan .pp{font-family:'Inter',sans-serif;font-size:30px;font-weight:800;margin:14px 0 2px}
.plan .pp small{font-size:14px;color:var(--muted);font-weight:600}
.plan ul{list-style:none;margin:18px 0 24px;display:flex;flex-direction:column;gap:10px}
.plan li{position:relative;padding-left:22px;font-size:13.5px;color:var(--ink-2);line-height:1.6}
.plan li::before{content:"";position:absolute;left:0;top:8px;width:11px;height:6px;border-left:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(-45deg)}
.plan .btn{margin-top:auto;width:100%}

/* CTA */
.cta-band{background:var(--ink);color:#fff;border-radius:20px;padding:60px 48px;text-align:center}
.cta-band h2{font-size:34px;font-weight:900;line-height:1.4}
.cta-band p{color:#cfcfcf;font-size:16px;margin-top:16px}
.cta-band .btn{background:#fff;color:var(--ink);border-color:#fff;margin-top:30px}
.cta-band .micro{color:#9a9a9a;font-size:12px;margin-top:14px}

/* footer */
footer{border-top:1px solid var(--line);padding:46px 0;color:var(--muted);font-size:13px}
.foot-in{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.foot-in .logo{color:var(--ink)}
.foot-note{max-width:480px;line-height:1.8}
.poc-flag{display:inline-block;font-family:'Inter',sans-serif;font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--muted);border:1px solid var(--line-2);border-radius:999px;padding:3px 10px;margin-top:14px}

@media(max-width:880px){
  .hero h1{font-size:36px}.sec-h h2{font-size:26px}
  .cards,.steps,.plans{grid-template-columns:1fr}
  .steps .s{border-right:none;border-bottom:1px solid var(--line)}
  .flowmock{grid-template-columns:1fr}.flowmock .col{border-right:none;border-bottom:1px solid var(--line)}
  .diff{grid-template-columns:1fr;gap:28px}
  .nav-links a:not(.btn){display:none}
  .cta-band{padding:44px 24px}.cta-band h2{font-size:26px}
}