/* ===== Bitdefender — clean corporate cybersecurity ===== */
:root{
  --blue:#0264c8; --blue-d:#004a9c; --ink:#14263a; --mut:#5f7286;
  --bg:#f4f7fb; --paper:#ffffff; --line:#e3eaf2; --accent:#eef4fc;
  --teal:#0cb8a8; --round:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color:var(--ink);background:var(--bg);line-height:1.8;font-size:16px}
a{color:var(--blue);text-decoration:none}
img{max-width:100%}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}

/* topbar */
.topbar{background:#0a1a2b;color:#bcd7ef;font-size:.82rem;padding:6px 0}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px}
.topbar span b{color:#fff}

/* header */
.site{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.hd{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 24px;max-width:1140px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:1.2rem}
.logo img{width:30px;height:30px;border-radius:8px}
.logo b{color:var(--blue)}
.nav-toggle{display:none;background:none;border:0;color:var(--ink);font-size:1.5rem}
nav.main{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
nav.main a{color:var(--mut);font-weight:600;font-size:.94rem}
nav.main a.active,nav.main a:hover{color:var(--blue)}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:10px 24px;border-radius:8px;font-weight:700;transition:.2s}
.btn:hover{background:var(--blue-d)}
.btn.ghost{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.btn.sm{padding:7px 16px;font-size:.88rem}

/* hero */
.hero{background:linear-gradient(135deg,#e9f3fc 0%,#ffffff 60%);padding:70px 0 60px}
.hero .eyebrow{color:var(--teal);font-weight:800;letter-spacing:.14em;font-size:.82rem}
.hero h1{font-size:2.5rem;margin:14px 0 12px;line-height:1.25}
.hero .sub{color:var(--mut);font-size:1.08rem;max-width:700px}
.metrics{display:flex;gap:34px;flex-wrap:wrap;margin-top:30px}
.metric b{display:block;font-size:1.7rem;color:var(--blue)}
.metric span{color:var(--mut);font-size:.86rem}
.cta-row{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}

/* sections */
.blk{padding:56px 0}
.blk.alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2.sec{font-size:1.6rem;margin-bottom:8px}
.sec-sub{color:var(--mut);margin-bottom:28px;max-width:760px}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--round);padding:24px}
.card h3{font-size:1.08rem;margin-bottom:8px;color:var(--ink)}
.card p{color:var(--mut);font-size:.95rem}
.card .k{display:inline-block;background:var(--accent);color:var(--blue);font-size:.76rem;font-weight:700;padding:3px 11px;border-radius:999px;margin-bottom:10px}

/* split with shield panel */
.split{display:grid;grid-template-columns:1.2fr 1fr;gap:34px;align-items:center}
.shield{background:linear-gradient(160deg,var(--blue),#0b8ad2);border-radius:18px;color:#fff;padding:34px;box-shadow:0 18px 40px rgba(2,100,200,.25)}
.shield h3{font-size:1.3rem;margin-bottom:10px;color:#fff}
.shield li{list-style:none;padding:9px 0 9px 26px;position:relative;border-bottom:1px solid rgba(255,255,255,.18);font-size:.94rem}
.shield li:last-child{border-bottom:0}
.shield li::before{content:"✓";position:absolute;left:0;color:#9ff0e6;font-weight:800}

/* product tiers */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.tier{background:var(--paper);border:1px solid var(--line);border-radius:var(--round);padding:24px;box-shadow:0 8px 22px rgba(20,38,58,.06)}
.tier.featured{border-color:var(--blue);box-shadow:0 0 0 1px rgba(2,100,200,.4)}
.tier h3{font-size:1.1rem}
.tier .n{color:var(--teal);font-weight:800;font-size:.8rem;letter-spacing:.1em;display:block;margin-bottom:4px}
.tier ul{list-style:none;margin-top:14px}
.tier li{color:var(--mut);font-size:.9rem;padding:4px 0 4px 20px;position:relative}
.tier li::before{content:"●";position:absolute;left:0;color:var(--teal);font-size:.6rem;top:10px}

/* guide steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}
.step{background:var(--paper);border:1px solid var(--line);border-radius:var(--round);padding:20px}
.step .no{width:30px;height:30px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:10px}
.step strong{font-size:.98rem}
.step small{display:block;color:var(--mut);margin-top:6px;font-size:.85rem}

/* faq */
.faq{background:var(--paper);border:1px solid var(--line);border-radius:12px;margin-bottom:12px}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:700;list-style:none}
.faq summary::before{content:"Q";margin-right:10px;color:var(--blue);font-weight:800}
.faq .a{padding:0 20px 18px 44px;color:var(--mut);font-size:.94rem}

/* cta band */
.cta-band{background:linear-gradient(120deg,var(--blue-d),var(--blue));color:#fff;border-radius:16px;padding:38px;text-align:center}
.cta-band h2{color:#fff;font-size:1.4rem;margin-bottom:8px}
.cta-band p{color:#d9ecfa;margin-bottom:20px}
.cta-band .btn{background:#fff;color:var(--blue)}

/* footer */
footer.site{background:#0a1a2b;color:#9fb8cf;padding:38px 0 44px}
footer.site a{color:#9fd0f4}
.ft{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.ft .logo{color:#fff;margin-bottom:8px}
.ft p{font-size:.88rem;max-width:360px;color:#7f9bb5}
.ft nav{display:flex;flex-direction:column;gap:8px;font-size:.9rem}
.note{font-size:.85rem;color:var(--mut);background:var(--accent);border:1px dashed var(--blue);padding:12px 16px;border-radius:12px;margin-top:18px}

@media(max-width:760px){
  .g3,.g2,.g4,.tiers,.steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .hero h1{font-size:1.9rem}
  .nav-toggle{display:block}
  nav.main{display:none;flex-direction:column;align-items:flex-start;width:100%;padding:12px 0;border-top:1px solid var(--line)}
  nav.main.open{display:flex}
}