/* ═══════════════════════════════════════════
   テーマ: NEON — ダーク × ネオン（テックメディア風）
   ═══════════════════════════════════════════ */

:root{
  --bg:#080b14;
  --bg-2:#0e1322;
  --surface:#141a2e;
  --surface-2:#1b2340;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --text:#e8ecf6;
  --text-2:#9aa4c0;
  --text-3:#6b7590;
  --cyan:#22d3ee;
  --purple:#a855f7;
  --pink:#f472b6;
  --lime:#a3e635;
  --grad:linear-gradient(100deg,#22d3ee 0%,#a855f7 55%,#f472b6 100%);
  --radius:16px;
  --font:"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,
    -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  line-height:1.85;-webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(60rem 32rem at 12% -8%,rgba(34,211,238,.13),transparent 60%),
    radial-gradient(52rem 30rem at 92% 2%,rgba(168,85,247,.15),transparent 62%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;}

.container{max-width:1120px;margin:0 auto;padding:0 24px;}
.container.narrow{max-width:800px;}

/* ── header ───────────────────────────── */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(8,11,20,.82);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.head-inner{
  max-width:1120px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:flex;align-items:center;gap:12px;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  font-size:.8rem;font-weight:800;color:#070a12;letter-spacing:-.02em;
  box-shadow:0 0 22px rgba(34,211,238,.45);flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.3;}
.logo-text b{font-size:1.08rem;letter-spacing:.04em;}
.logo-text small{font-size:.66rem;color:var(--text-3);letter-spacing:.06em;}
.util-nav{display:flex;gap:20px;font-size:.79rem;color:var(--text-2);}
.util-nav a{transition:color .18s;}
.util-nav a:hover{color:var(--cyan);}

/* ── category nav ─────────────────────── */
.cat-nav{border-top:1px solid var(--line);overflow-x:auto;scrollbar-width:none;}
.cat-nav::-webkit-scrollbar{display:none;}
.cat-nav-inner{
  max-width:1120px;margin:0 auto;padding:0 24px;
  display:flex;gap:6px;white-space:nowrap;
}
.cat-link{
  padding:13px 15px;font-size:.83rem;color:var(--text-2);
  border-bottom:2px solid transparent;transition:.18s;display:inline-flex;
  align-items:center;gap:6px;
}
.cat-link:hover{color:var(--text);}
.cat-link.active{color:var(--cyan);border-bottom-color:var(--cyan);font-weight:600;}
.flag{font-size:.95rem;}

/* ── hero ─────────────────────────────── */
.hero{padding:72px 0 52px;position:relative;overflow:hidden;}
.hero::after{
  content:"";position:absolute;left:50%;top:-30%;transform:translateX(-50%);
  width:70rem;height:34rem;pointer-events:none;
  background:radial-gradient(closest-side,rgba(168,85,247,.16),transparent);
}
.hero-inner{max-width:1120px;margin:0 auto;padding:0 24px;text-align:center;position:relative;z-index:1;}
.hero-eyebrow{
  margin:0 0 16px;font-size:.68rem;letter-spacing:.34em;color:var(--cyan);
  font-weight:700;
}
.hero h1{
  margin:0 0 18px;font-size:clamp(1.9rem,5vw,3.2rem);line-height:1.28;
  font-weight:800;letter-spacing:.01em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-desc{margin:0 auto 30px;max-width:600px;color:var(--text-2);font-size:.94rem;}
.hero-regions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;}
.region-chip{
  padding:8px 18px;border-radius:999px;font-size:.83rem;
  border:1px solid var(--line-2);background:rgba(255,255,255,.04);
  color:var(--text);transition:.2s;
}
.region-chip:hover{
  border-color:var(--cyan);background:rgba(34,211,238,.12);
  box-shadow:0 0 20px rgba(34,211,238,.2);transform:translateY(-2px);
}

/* ── rail title ───────────────────────── */
.rail-title{
  display:flex;align-items:center;gap:14px;margin:0 0 22px;
  font-size:.94rem;font-weight:700;letter-spacing:.06em;color:var(--text);
}
.rail-title span{flex-shrink:0;}
.rail-title::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line-2),transparent);}
.rail-title::before{content:"";width:4px;height:17px;border-radius:2px;background:var(--grad);}

/* ── cards ────────────────────────────── */
.featured-wrap{padding-bottom:46px;}
.latest{padding-bottom:56px;}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:18px;}
.grid-ad{grid-column:1/-1;}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .22s cubic-bezier(.2,.7,.3,1),
    border-color .22s, box-shadow .22s;position:relative;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;
  background:var(--grad);opacity:0;transition:opacity .22s;pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 44px rgba(0,0,0,.5);}
.card:hover::before{opacity:.85;}
.card > a{display:block;padding:22px 24px;}
.card-top{display:flex;align-items:center;gap:11px;margin-bottom:13px;flex-wrap:wrap;}
.card-top time{font-size:.72rem;color:var(--text-3);letter-spacing:.04em;}
.card-title{
  margin:0 0 11px;font-size:1.09rem;line-height:1.6;font-weight:700;
  transition:color .18s;
}
.card:hover .card-title{color:var(--cyan);}
.card-excerpt{margin:0 0 16px;font-size:.83rem;color:var(--text-2);line-height:1.8;}
.card-foot{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.card-more{margin-left:auto;font-size:.76rem;color:var(--cyan);font-weight:600;}

.card.featured{background:linear-gradient(150deg,var(--surface-2),var(--surface));}
.card.featured > a{padding:34px 38px;}
.card.featured .card-title{font-size:clamp(1.3rem,2.6vw,1.75rem);line-height:1.48;}
.card.featured .card-excerpt{font-size:.92rem;max-width:62ch;}
.card.featured::before{opacity:.4;}

/* ── badges & tags ────────────────────── */
.cat-badge{
  display:inline-flex;align-items:center;gap:5px;font-size:.7rem;font-weight:700;
  padding:4px 11px;border-radius:999px;letter-spacing:.04em;
  border:1px solid transparent;
}
.cat-japan{background:rgba(244,114,182,.14);color:#f9a8d4;border-color:rgba(244,114,182,.32);}
.cat-us{background:rgba(34,211,238,.13);color:#67e8f9;border-color:rgba(34,211,238,.3);}
.cat-china{background:rgba(251,146,60,.14);color:#fdba74;border-color:rgba(251,146,60,.32);}
.cat-global{background:rgba(163,230,53,.13);color:#bef264;border-color:rgba(163,230,53,.3);}
.tag{
  font-size:.68rem;padding:3px 10px;border-radius:6px;
  background:rgba(255,255,255,.06);color:var(--text-2);border:1px solid var(--line);
}

/* ── category hero ────────────────────── */
.cat-hero{
  padding:56px 0 40px;border-bottom:1px solid var(--line);margin-bottom:44px;
  background:linear-gradient(180deg,rgba(168,85,247,.09),transparent);
}
.cat-hero-flag{font-size:2.6rem;display:block;margin-bottom:12px;}
.cat-hero h1{margin:0 0 12px;font-size:clamp(1.5rem,3.6vw,2.15rem);font-weight:800;}
.cat-hero p{margin:0 0 16px;color:var(--text-2);font-size:.9rem;max-width:64ch;}
.cat-count{font-size:.74rem;color:var(--cyan);letter-spacing:.1em;font-weight:700;}

/* ── post ─────────────────────────────── */
.is-post .container.narrow{padding-top:44px;}
.post{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:44px 48px;margin-bottom:26px;
}
.post-header{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:6px;}
.post-header .cat-badge{margin-bottom:16px;}
.post h1{
  margin:0 0 18px;font-size:clamp(1.5rem,3.6vw,2.1rem);line-height:1.5;font-weight:800;
}
.post-meta{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin-bottom:12px;}
.post-meta time{font-size:.78rem;color:var(--text-3);}
.byline{font-size:.78rem;color:var(--text-2);}
.byline a{color:var(--cyan);}
.post-tags{display:flex;gap:7px;flex-wrap:wrap;}

.post-body{padding-top:8px;}
.post-body h2{
  font-size:1.32rem;margin:44px 0 16px;font-weight:800;line-height:1.5;
  padding-left:16px;position:relative;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;
  border-radius:3px;background:var(--grad);
}
.post-body h3{font-size:1.08rem;margin:32px 0 12px;color:var(--cyan);font-weight:700;}
.post-body p{margin:0 0 19px;font-size:.98rem;color:#dde3f0;}
.post-body ul{padding-left:1.4em;margin:0 0 20px;}
.post-body li{margin:8px 0;font-size:.95rem;color:#dde3f0;}
.post-body li::marker{color:var(--cyan);}
.post-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.post-body a:hover{color:var(--pink);}
.post-body strong{color:#fff;font-weight:700;}
.post-body blockquote{
  margin:26px 0;padding:18px 24px;background:var(--bg-2);
  border-left:3px solid var(--purple);border-radius:0 10px 10px 0;
}
.post-body blockquote p{margin:0;font-size:.92rem;color:var(--text-2);}
.post-body code{
  background:rgba(34,211,238,.1);color:#7dd3fc;padding:2px 7px;
  border-radius:5px;font-size:.87em;
}
.post-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}
.disclaimer{
  margin:34px 0 0;padding-top:20px;border-top:1px solid var(--line);
  font-size:.75rem;color:var(--text-3);line-height:1.9;
}

/* ── ads ──────────────────────────────── */
.ad-slot{margin:32px 0;text-align:center;}
.ad-label{
  display:block;font-size:.63rem;color:var(--text-3);
  margin-bottom:7px;letter-spacing:.16em;
}
.ad-slot.placeholder{
  border:1px dashed var(--line-2);border-radius:12px;padding:30px 16px;
  background:rgba(255,255,255,.02);
}
.ad-slot.placeholder span{
  display:block;font-size:.74rem;color:var(--text-2);
  letter-spacing:.18em;margin-bottom:6px;
}
.ad-slot.placeholder small{font-size:.68rem;color:var(--text-3);}

/* ── tool box (affiliate) ─────────────── */
.tool-box{
  margin:36px 0 0;border:1px solid var(--line-2);border-radius:14px;
  background:linear-gradient(160deg,rgba(168,85,247,.09),rgba(34,211,238,.05));
  padding:22px 24px;
}
.tool-box-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.tool-box-title{font-size:.86rem;font-weight:700;letter-spacing:.05em;}
.pr-mark{
  font-size:.6rem;padding:2px 8px;border-radius:4px;letter-spacing:.1em;
  background:rgba(255,255,255,.1);color:var(--text-3);border:1px solid var(--line);
}
.tool{
  display:flex;align-items:center;gap:16px;padding:15px 0;
  border-top:1px solid var(--line);flex-wrap:wrap;
}
.tool:first-of-type{border-top:none;}
.tool-info{flex:1;min-width:210px;}
.tool-name{font-size:.97rem;font-weight:700;margin-right:10px;}
.tool-price{font-size:.72rem;color:var(--lime);letter-spacing:.03em;}
.tool-catch{margin:5px 0 0;font-size:.8rem;color:var(--text-2);line-height:1.7;}
.tool-cta{
  padding:10px 22px;border-radius:999px;font-size:.8rem;font-weight:700;
  background:var(--grad);color:#070a12;white-space:nowrap;transition:.2s;
}
.tool-cta:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(34,211,238,.34);}

/* ── CTA ──────────────────────────────── */
.cta{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin:0 0 46px;padding:30px 34px;border-radius:var(--radius);
  background:linear-gradient(120deg,var(--surface-2),var(--surface));
  border:1px solid var(--line-2);position:relative;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;right:-6rem;top:-6rem;width:18rem;height:18rem;
  background:radial-gradient(closest-side,rgba(34,211,238,.22),transparent);
}
.cta-text{position:relative;z-index:1;}
.cta-text h3{margin:0 0 6px;font-size:1.08rem;font-weight:800;}
.cta-text p{margin:0;font-size:.85rem;color:var(--text-2);}
.cta-btn{
  position:relative;z-index:1;padding:13px 30px;border-radius:999px;
  background:var(--grad);color:#070a12;font-weight:800;font-size:.87rem;
  white-space:nowrap;transition:.2s;
}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(168,85,247,.4);}

/* ── related ──────────────────────────── */
.related{padding-bottom:60px;}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;}
.rel-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:17px 19px;display:flex;flex-direction:column;gap:9px;transition:.2s;
}
.rel-item:hover{border-color:var(--line-2);transform:translateY(-2px);}
.rel-item .cat-badge{align-self:flex-start;}
.rel-title{font-size:.87rem;line-height:1.65;font-weight:600;}
.rel-item:hover .rel-title{color:var(--cyan);}
.rel-item time{font-size:.7rem;color:var(--text-3);}

/* ── static pages ─────────────────────── */
.static-page h2{
  font-size:1.14rem;margin:34px 0 12px;font-weight:700;padding-left:15px;
  position:relative;
}
.static-page h2::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;
  border-radius:3px;background:var(--grad);
}
.static-page p{font-size:.93rem;color:#dde3f0;margin:0 0 15px;}
.static-page a{color:var(--cyan);}
.contact-mail{
  background:var(--bg-2);padding:16px 20px;border-radius:10px;
  font-weight:700;border:1px solid var(--line);
}
.empty{text-align:center;color:var(--text-3);padding:70px 0;}

/* ── footer ───────────────────────────── */
.site-footer{
  border-top:1px solid var(--line);background:var(--bg-2);margin-top:20px;
  padding:48px 0 26px;
}
.foot-inner{
  max-width:1120px;margin:0 auto;padding:0 24px;
  display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.foot-brand{display:flex;align-items:center;gap:13px;}
.foot-brand b{display:block;font-size:1.02rem;}
.foot-brand small{font-size:.72rem;color:var(--text-3);}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap;}
.foot-col{display:flex;flex-direction:column;gap:9px;}
.foot-col h4{
  margin:0 0 4px;font-size:.72rem;color:var(--text-3);
  letter-spacing:.14em;font-weight:700;
}
.foot-col a{font-size:.82rem;color:var(--text-2);transition:color .18s;}
.foot-col a:hover{color:var(--cyan);}
.copy{
  text-align:center;margin:38px 0 0;font-size:.7rem;color:var(--text-3);
  letter-spacing:.06em;
}

/* ── responsive ───────────────────────── */
@media(max-width:720px){
  .post{padding:28px 22px;}
  .card.featured > a{padding:24px 22px;}
  .cta{padding:24px;}
  .util-nav{display:none;}
  .foot-cols{gap:34px;}
  .hero{padding:48px 0 36px;}
}