:root{
  --blue:#38a2ff;
  --blue-dark:#1e86e6;
  --navy:#153d5e;
  --orange:#ff6900;
  --ink:#3c434a;
  --muted:#6c757d;
  --border:#dee2e6;
  --bg:#ffffff;
  --bg-soft:#f5f8fb;
  --bg-hero:#eef4fb;
  --radius:10px;
  --shadow:0 1px 2px rgba(21,61,94,.06);
  --shadow-hover:0 10px 28px rgba(21,61,94,.10);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Montserrat",-apple-system,"Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:15px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:14px;line-height:1;
  padding:12px 22px;border-radius:6px;border:1.5px solid transparent;
  cursor:pointer;transition:.18s ease;font-family:inherit;
}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-primary:hover{background:var(--blue-dark);border-color:var(--blue-dark)}
.btn-outline{background:transparent;color:var(--navy);border-color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-arrow{background:transparent;color:var(--navy);border-color:var(--border);width:100%}
.btn-arrow::after{content:"→";font-weight:700}
.btn-arrow:hover{border-color:var(--navy);background:var(--navy);color:#fff}

/* header */
.site-header{border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand-logo{height:26px;width:auto}
.main-nav{display:flex;gap:26px;margin-left:8px}
.main-nav a{font-weight:600;font-size:14px;color:var(--navy)}
.main-nav a:hover{color:var(--blue)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav-login{font-weight:600;font-size:14px;color:var(--navy)}
.nav-login:hover{color:var(--blue)}

/* hero */
.hero{position:relative;overflow:hidden;background:#081a30;padding:44px 0 48px;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(90% 70% at 50% -10%, rgba(120,190,255,.55) 0%, rgba(8,26,48,0) 60%),
    radial-gradient(70% 90% at 8% 0%, rgba(46,130,220,.55) 0%, rgba(8,26,48,0) 55%),
    radial-gradient(85% 110% at 105% 115%, rgba(139,96,214,.60) 0%, rgba(8,26,48,0) 55%),
    radial-gradient(70% 100% at 55% 130%, rgba(56,162,255,.40) 0%, rgba(8,26,48,0) 60%),
    linear-gradient(160deg,#0a2036 0%,#12335a 45%,#0b1f39 78%,#0a1830 100%);
  background-color:#0a1e37;
}
/* 光沢：斜めのハイライトスイープ */
.hero-bg::before{content:"";position:absolute;inset:-20% -10%;z-index:-1;
  background:
    linear-gradient(115deg, rgba(255,255,255,0) 34%, rgba(180,215,255,.16) 47%, rgba(255,255,255,.05) 52%, rgba(255,255,255,0) 62%),
    radial-gradient(45% 30% at 50% 8%, rgba(255,255,255,.20) 0%, rgba(255,255,255,0) 70%);
  filter:blur(2px);pointer-events:none}
/* うっすらグリッド */
.hero-bg::after{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:46px 46px;mask-image:radial-gradient(120% 90% at 50% 0%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 0%,transparent 75%);opacity:.55}
.hero-content{text-align:center;position:relative}
.hero-eyebrow{margin:0 0 18px;font-size:13px;font-weight:700;letter-spacing:.22em;color:#8fd0ff}
.hero h1{font-size:50px;line-height:1.14;color:#fff;margin:0 0 22px;font-weight:800;letter-spacing:-.015em}
.hero-sub{max-width:820px;margin:0 auto 34px;font-size:16px;line-height:1.9;color:rgba(226,238,251,.86)}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-hero{display:inline-flex;align-items:center;justify-content:center;padding:15px 34px;border-radius:999px;font-family:inherit;font-weight:700;font-size:15px;letter-spacing:.02em;cursor:pointer;transition:.2s ease;border:1.5px solid transparent}
.btn-hero-grad{color:#fff;background:linear-gradient(90deg,#f0b6d5 0%,#a892f0 42%,#4aa6ff 100%);box-shadow:0 8px 24px rgba(74,166,255,.28)}
.btn-hero-grad:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 30px rgba(74,166,255,.36)}
.btn-hero-outline{color:#8fd0ff;background:transparent;border-color:rgba(120,180,255,.65)}
.btn-hero-outline:hover{background:rgba(120,180,255,.12);border-color:#8fd0ff;color:#bfe3ff}
.hero-br{display:inline}

/* layout */
.main-layout{display:grid;grid-template-columns:260px 1fr;gap:40px;padding-top:28px;padding-bottom:72px;align-items:start}

/* sidebar */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:28px}
.filter-group{display:flex;flex-direction:column;gap:10px}
.filter-label{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.type-toggle{display:flex;border:1.5px solid var(--border);border-radius:8px;overflow:hidden;background:#fff}
.type-btn{flex:1;padding:10px 0;background:#fff;border:none;font-family:inherit;font-weight:600;font-size:14px;color:var(--navy);cursor:pointer;transition:.15s}
.type-btn+.type-btn{border-left:1.5px solid var(--border)}
.type-btn.is-active{background:var(--navy);color:#fff}
.search-input{padding:11px 14px;border:1.5px solid var(--border);border-radius:8px;font-family:inherit;font-size:14px;color:var(--ink);width:100%}
.search-input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(56,162,255,.15)}
.radio-list{display:flex;flex-direction:column}
.radio-item{display:flex;align-items:center;gap:10px;padding:7px 2px;cursor:pointer;font-size:14px;color:var(--ink)}
.radio-item input{accent-color:var(--blue);width:16px;height:16px;cursor:pointer}
.radio-item:hover{color:var(--blue)}
.radio-item .count{margin-left:auto;font-size:12px;color:var(--muted)}
.sidebar-cta{border:1px solid var(--border);background:var(--bg-soft);border-radius:var(--radius);padding:18px}
.sidebar-cta p{margin:0 0 14px;font-size:14px;color:var(--navy)}

/* results intro */
.intro-block{padding-top:28px}
.section-intro{margin:0;font-size:15px;line-height:1.85;color:var(--navy);font-weight:700}
.section-intro-note{font-size:13px;font-weight:500;color:#4a6a86}

/* product tabs */
.product-tabs{display:flex;flex-wrap:wrap;gap:6px;padding:6px;margin-bottom:24px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}
.product-tab{display:inline-flex;align-items:center;gap:9px;padding:10px 16px;border:none;background:transparent;border-radius:8px;font-family:inherit;font-weight:600;font-size:14px;color:var(--navy);cursor:pointer;transition:.15s;line-height:1}
.product-tab img{width:22px;height:22px;border-radius:5px}
.product-tab:hover{background:var(--bg-soft)}
.product-tab.is-active{background:var(--bg-hero);color:var(--blue);box-shadow:inset 0 -2px 0 var(--blue)}

/* results */
.results-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;min-height:24px}
.result-count{font-size:14px;color:var(--muted)}
.result-count b{color:var(--navy)}
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

/* card */
.card{
  display:flex;flex-direction:column;
  border:1px solid var(--border);border-radius:var(--radius);background:#fff;
  padding:22px;min-height:220px;box-shadow:var(--shadow);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#cfe2f6}
.card-title{font-size:17px;font-weight:700;color:var(--navy);margin:0 0 10px;line-height:1.4}
.card-desc{font-size:14px;color:var(--ink);margin:0 0 18px;flex:1}
.card-meta{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.badges{display:flex;gap:8px;flex-wrap:wrap}
.product-chip{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--navy);background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:4px 12px 4px 5px;white-space:nowrap}
.product-chip img{width:20px;height:20px;border-radius:5px}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:11px;font-weight:600;color:var(--blue);background:#eaf4ff;border:1px solid #cfe6ff;border-radius:999px;padding:4px 10px;white-space:nowrap}
.card-foot{margin-top:auto}
.copy-btn,.dl-btn{width:100%}
.copy-btn.copied{background:#198754;border-color:#198754}
.prompt-preview{display:none}

/* toast */
.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 22px;border-radius:8px;font-size:14px;font-weight:600;box-shadow:0 8px 24px rgba(0,0,0,.2);z-index:100}

/* footer */
.site-footer{background:var(--navy);color:#cdd9e5;margin-top:20px}
.footer-inner{display:grid;grid-template-columns:1.2fr 2fr;gap:48px;padding-top:56px;padding-bottom:40px}
.footer-logo{height:26px;filter:brightness(0) invert(1);opacity:.95}
.footer-note{font-size:14px;margin:18px 0 0;max-width:320px;color:#a9bccf}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.footer-col h4{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:#fff;margin:0 0 14px}
.footer-col a{display:block;font-size:14px;color:#a9bccf;padding:4px 0}
.footer-col a:hover{color:#fff}
.footer-legal{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;padding-bottom:28px;font-size:12px;color:#8ba4bd}

.empty-state{text-align:center;color:var(--muted);padding:60px 0;font-size:15px}

/* responsive */
@media (max-width:980px){
  .main-layout{grid-template-columns:1fr;gap:28px}
  .sidebar{position:static;flex-direction:column}
  .cards-grid{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none}
}
@media (max-width:640px){
  .cards-grid{grid-template-columns:1fr}
  .hero{padding:32px 0 36px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:15px}
  .hero-br{display:none}
  .section-intro{font-size:16px}
  .section-intro-note{font-size:13px}
  .intro-block{padding-top:28px}
  .main-layout{padding-top:28px}
  .btn-hero{padding:13px 26px;font-size:14px}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .header-actions .btn{display:none}
}