/* ================= ZECT brand ================= */
:root{
  --ink:#141824;
  --sub:#5a6072;
  --indigo:#4b56a8;
  --indigo-dark:#39418a;
  --navy:#171c33;
  --paper:#f5f6fa;
  --line:#e4e6ee;
  --amber:#f5a623;
  --radius:14px;
  --shadow:0 8px 28px rgba(20,24,36,.09);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Hiragino Kaku Gothic ProN","Hiragino Sans","BIZ UDPGothic",Meiryo,system-ui,sans-serif;
  color:var(--ink);line-height:1.85;background:#fff;
  -webkit-text-size-adjust:100%;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--indigo);text-decoration:none}
a:hover{opacity:.85}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.header-in{max-width:1080px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand img{height:30px;width:auto}
.nav{margin-left:auto;display:flex;gap:20px;font-size:.95rem;font-weight:600}
.nav a{color:var(--ink)}
.nav a.cta{background:var(--amber);color:#fff;padding:7px 16px;border-radius:999px}
@media(max-width:640px){
  .nav{gap:12px;font-size:.82rem}
  .brand img{height:24px}
}

/* ---------- hero ---------- */
.hero{background:linear-gradient(160deg,var(--navy) 0%,#232b52 55%,var(--indigo-dark) 100%);color:#fff;overflow:hidden}
.hero-in{max-width:1080px;margin:0 auto;padding:64px 20px 56px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(1.5rem,3.6vw,2.4rem);line-height:1.5;letter-spacing:.02em}
.hero .tagline{color:var(--amber);font-weight:700;letter-spacing:.14em;font-size:.95rem;margin-bottom:14px}
.hero p.lead{margin-top:18px;color:#c9cde4;font-size:1.02rem}
.hero-photo{border-radius:var(--radius);box-shadow:0 18px 50px rgba(0,0,0,.45);transform:rotate(1.5deg)}
.hero-btns{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;border-radius:999px;padding:13px 28px;font-size:1rem;transition:transform .15s}
.btn:hover{transform:translateY(-2px);opacity:1}
.btn-amazon{background:var(--amber);color:#1b1b1b}
.btn-line{background:#06c755;color:#fff}
.btn-ghost{border:2px solid #fff;color:#fff}
@media(max-width:820px){.hero-in{grid-template-columns:1fr;padding:44px 20px}}

/* ---------- sections ---------- */
.section{max-width:1080px;margin:0 auto;padding:64px 20px}
.section.alt{max-width:none;background:var(--paper)}
.section.alt>.inner{max-width:1080px;margin:0 auto;padding:0 20px}
.sec-label{color:var(--indigo);font-weight:800;letter-spacing:.18em;font-size:.8rem;text-transform:uppercase}
h2.sec-title{font-size:clamp(1.3rem,2.6vw,1.8rem);margin:6px 0 28px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:760px){.grid2{grid-template-columns:1fr}}

/* product card */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column}
.card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:1.15rem}
.card .desc{color:var(--sub);font-size:.95rem;flex:1}
.badge{display:inline-block;background:var(--indigo);color:#fff;font-size:.75rem;font-weight:700;padding:3px 10px;border-radius:6px;margin-right:6px}
.card .btn{align-self:flex-start;padding:10px 22px;font-size:.92rem}

/* feature strip */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center}
.feature .icon{font-size:1.7rem}
.feature h3{font-size:1rem;margin:8px 0 6px}
.feature p{font-size:.88rem;color:var(--sub)}
@media(max-width:760px){.features{grid-template-columns:1fr}}

/* blog list */
.post-list{display:grid;gap:16px}
.post-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;display:block;color:var(--ink)}
.post-item:hover{border-color:var(--indigo)}
.post-item .meta{font-size:.8rem;color:var(--sub)}
.post-item h3{font-size:1.05rem;margin:4px 0 6px;color:var(--indigo-dark)}
.post-item p{font-size:.9rem;color:var(--sub)}

/* ---------- article ---------- */
.article{max-width:760px;margin:0 auto;padding:48px 20px 72px}
.article header .meta{color:var(--sub);font-size:.85rem}
.article h1{font-size:clamp(1.4rem,3vw,1.9rem);line-height:1.55;margin:8px 0 24px}
.article h2{font-size:1.3rem;margin:44px 0 14px;padding:10px 16px;border-left:5px solid var(--indigo);background:var(--paper);border-radius:0 8px 8px 0}
.article h3{font-size:1.08rem;margin:30px 0 10px;color:var(--indigo-dark)}
.article p{margin:14px 0}
.article ul,.article ol{margin:14px 0 14px 1.4em}
.article li{margin:6px 0}
.article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.92rem}
.article th,.article td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.article th{background:var(--paper)}
.article .table-wrap{overflow-x:auto}
.point{background:#eef1fb;border:1px solid #ccd3f0;border-radius:var(--radius);padding:18px 22px;margin:22px 0}
.point .ttl{font-weight:800;color:var(--indigo-dark);margin-bottom:6px}
.warn{background:#fff6e8;border:1px solid #f0ddb8;border-radius:var(--radius);padding:18px 22px;margin:22px 0}
.warn .ttl{font-weight:800;color:#9a6b00;margin-bottom:6px}
.cta-box{border:2px solid var(--amber);border-radius:var(--radius);padding:22px 24px;margin:30px 0;background:#fffdf7}
.cta-box .pr{font-size:.75rem;color:var(--sub)}
.cta-box a.main{font-weight:800;font-size:1.05rem}
.cta-box p{font-size:.9rem;color:var(--sub);margin:6px 0 0}

/* faq */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;background:#fff;overflow:hidden}
.faq-item summary{cursor:pointer;font-weight:700;padding:18px 22px;list-style:none;position:relative;padding-right:48px}
.faq-item summary::after{content:"＋";position:absolute;right:20px;top:50%;transform:translateY(-50%);color:var(--indigo);font-weight:800}
.faq-item[open] summary::after{content:"－"}
.faq-item .a{padding:0 22px 18px;color:var(--sub)}

/* footer */
.site-footer{background:var(--navy);color:#aab0cd;margin-top:40px}
.footer-in{max-width:1080px;margin:0 auto;padding:40px 20px;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.footer-in img{height:26px;filter:brightness(0) invert(1);opacity:.9}
.footer-nav{display:flex;gap:18px;font-size:.88rem}
.footer-nav a{color:#cdd2ea}
.copyright{width:100%;text-align:center;font-size:.78rem;border-top:1px solid #2a3152;padding-top:18px}

/* page hero (subpages) */
.page-hero{background:var(--paper);border-bottom:1px solid var(--line)}
.page-hero .in{max-width:1080px;margin:0 auto;padding:40px 20px}
.page-hero h1{font-size:clamp(1.3rem,2.8vw,1.8rem)}
.page-hero p{color:var(--sub);margin-top:6px;font-size:.95rem}

/* video */
.videos{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.video-link{position:relative;display:block;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.video-link img{width:100%}
.video-link .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.25);color:#fff;font-size:3rem;transition:background .2s}
.video-link:hover .play{background:rgba(0,0,0,.45)}
@media(max-width:640px){.videos{grid-template-columns:1fr}}