:root{--bg:#f3fbff;--surface:#fff;--soft:#f7fcff;--text:#1b2b34;--muted:#667780;--line:#d8e8ef;--primary:#1177aa;--dark:#075b86;--accent:#18a999;--warn:#a96d00;--danger:#b64242;--good:#18865b;--shadow:0 16px 42px rgba(10,91,134,.12)}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:radial-gradient(circle at 12% 0%,rgba(24,169,153,.13),transparent 34%),radial-gradient(circle at 90% 10%,rgba(17,119,170,.12),transparent 28%),var(--bg);color:var(--text);line-height:1.75}a{color:var(--dark);text-decoration:none}a:hover{text-decoration:underline}.site-header{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);padding:14px 20px;position:sticky;top:0;backdrop-filter:blur(10px);z-index:20}.header-inner{width:min(1120px,calc(100% - 32px));margin:0 auto;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center}.logo{font-weight:900;font-size:1.08rem;color:var(--text)}.nav{display:flex;justify-content:flex-end;gap:14px;flex-wrap:wrap;font-size:.94rem}.menu-toggle{display:none;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 12px;font-weight:800;color:var(--text);cursor:pointer}.menu-icon{width:18px;height:12px;display:inline-block;position:relative;border-top:2px solid var(--text);border-bottom:2px solid var(--text)}.menu-icon:before{content:"";position:absolute;left:0;top:3px;width:18px;border-top:2px solid var(--text)}.container{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:30px 0 60px}.hero{background:linear-gradient(135deg,#e7f8ff,#fff 55%,#eafff8);border:1px solid var(--line);border-radius:30px;padding:44px;box-shadow:var(--shadow)}.hero.compact{padding:32px}.eyebrow{color:var(--primary);font-weight:850;margin:0 0 8px}h1{font-size:clamp(2rem,5vw,3.45rem);line-height:1.14;margin:0 0 16px}h2{line-height:1.34;margin-top:0}h3{line-height:1.4}.lead{font-size:1.08rem;color:#30434b}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.button{display:inline-flex;justify-content:center;align-items:center;background:var(--primary);color:#fff;border:0;border-radius:999px;padding:14px 22px;font-size:1rem;font-weight:850;cursor:pointer;box-shadow:0 8px 22px rgba(17,119,170,.2)}.button.secondary{background:#fff;color:var(--dark);border:1px solid var(--line);box-shadow:none}.button:hover{background:var(--dark);color:#fff;text-decoration:none}.button.secondary:hover{background:var(--soft);color:var(--dark)}.button.full{width:100%}.card-grid,.product-grid,.fish-grid,.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:24px}.tool-layout{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:20px;margin-top:24px}.card,.tool-card,.result-card,.content-card,.fish-card,.product-card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}.content-card{margin-top:24px}.small{color:var(--muted);font-size:.92rem}.breadcrumb{color:var(--muted);font-size:.94rem;margin-bottom:16px}fieldset{border:1px solid var(--line);border-radius:18px;padding:16px;margin:16px 0;background:#fbfdff}legend{font-weight:850;padding:0 8px}.option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.option-card{display:block;border:1px solid var(--line);border-radius:16px;padding:12px;background:#fff;cursor:pointer;font-weight:700}.option-card input{width:auto;margin:0 8px 0 0}.option-card:hover{border-color:var(--primary)}label{display:block;font-weight:760;margin:14px 0}input,select{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font-size:1rem;background:#fff;margin-top:6px}input:focus,select:focus{outline:3px solid rgba(17,119,170,.18);border-color:var(--primary)}.input-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.metric{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding:12px 0;gap:12px}.metric strong{font-size:1.35rem;color:var(--dark);text-align:right}.badge{display:inline-block;border-radius:999px;padding:3px 10px;color:#fff;font-size:.84rem;font-weight:850;margin:2px 4px 2px 0}.badge.good{background:var(--good)}.badge.warn{background:var(--warn)}.badge.danger{background:var(--danger)}.badge.info{background:var(--primary)}.badge.accent{background:var(--accent)}.check-list{padding-left:0;list-style:none}.check-list li{padding:8px 0 8px 30px;position:relative;border-bottom:1px solid var(--line)}.check-list li:before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:900}.warning-list li:before{content:"!";color:var(--warn)}.note{background:#fffbea;border:1px solid #f1e3a3;border-radius:18px;padding:16px}.info-box{background:var(--soft);border:1px solid var(--line);border-radius:18px;padding:16px}.info-list{display:grid;grid-template-columns:140px 1fr;gap:10px 18px;border-top:1px solid var(--line);margin:22px 0;padding-top:18px}.info-list dt{font-weight:850;color:var(--muted)}.info-list dd{margin:0}.fish-card p,.product-card p,.card p{color:#3f5058}.ad-disclosure{width:min(820px,calc(100% - 32px));margin:0 auto 12px;font-size:.84rem;color:var(--muted);line-height:1.65}.site-footer{color:var(--muted);text-align:center;border-top:1px solid var(--line);padding:30px 16px}.footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
@media(max-width:860px){.header-inner{grid-template-columns:1fr auto}.menu-toggle{display:inline-flex;justify-self:end}.nav{display:none;grid-column:1/-1;margin-top:12px;padding-top:12px;border-top:1px solid var(--line);justify-content:stretch}.nav.is-open{display:grid;gap:8px}.nav a{display:block;padding:10px 12px;background:var(--soft);border:1px solid var(--line);border-radius:14px}.hero,.hero.compact{padding:24px;border-radius:22px}.card-grid,.tool-layout,.product-grid,.fish-grid,.result-grid{grid-template-columns:1fr}.option-grid,.input-grid{grid-template-columns:1fr}.metric{display:block}.metric strong{display:block;text-align:left}.info-list{grid-template-columns:1fr}}

.plan-title h3 {
  margin: 0 0 8px;
}

h4 {
  margin: 18px 0 8px;
  line-height: 1.35;
}

.small-note { font-size: .88rem; color: var(--muted); }
.product-jump-links { display:flex; flex-wrap:wrap; gap:10px; margin-top:20px; }
.product-jump-links a { display:inline-flex; align-items:center; padding:10px 14px; border:1px solid var(--line); border-radius:999px; background:rgba(255,255,255,.75); text-decoration:none; color:var(--dark); font-weight:700; }
.affiliate-section > p { color: var(--muted); }
.affiliate-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:18px; margin-top:20px; }
.affiliate-item { background:#fff; border:1px solid rgba(24,62,89,.10); border-radius:20px; overflow:hidden; box-shadow:0 10px 26px rgba(24,62,89,.07); display:flex; flex-direction:column; }
.affiliate-image { width:100%; aspect-ratio:4/3; object-fit:contain; background:#f8fcff; padding:16px; border-bottom:1px solid rgba(24,62,89,.08); }
.affiliate-body { padding:16px; display:flex; flex-direction:column; gap:10px; flex:1; }
.affiliate-body h3 { margin:0; font-size:1rem; line-height:1.45; }
.affiliate-body p { margin:0; color:var(--muted); font-size:.92rem; line-height:1.65; }
.affiliate-buttons { display:flex; flex-wrap:wrap; gap:10px; margin-top:auto; }
.shop-button { display:inline-flex; justify-content:center; align-items:center; min-height:40px; padding:9px 12px; border-radius:12px; color:#fff; text-decoration:none; font-weight:800; font-size:.9rem; }
.shop-button.rakuten { background:#f76956; }
.shop-button.yahoo { background:#4f93e8; }
@media (max-width: 640px) { .affiliate-grid { grid-template-columns:1fr; } .shop-button { flex:1; } }

.gear-recommend-box {
  margin-top: 18px;
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(233, 248, 252, 0.95), rgba(255, 255, 255, 0.95));
  border: 1px solid rgba(24, 62, 89, 0.10);
}

.gear-recommend-box h3 {
  margin-top: 0;
}

.gear-recommend-box > p {
  color: var(--muted);
  margin-top: 4px;
}

.gear-recommend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.gear-recommend-card {
  display: block;
  padding: 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid rgba(24, 62, 89, 0.10);
  text-decoration: none;
  color: inherit;
  box-shadow: 0 8px 18px rgba(24, 62, 89, 0.05);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.gear-recommend-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(24, 62, 89, 0.09);
}

.gear-recommend-card strong {
  display: block;
  margin-bottom: 6px;
}

.gear-recommend-card span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.gear-recommend-note {
  font-size: 0.86rem;
  color: var(--muted);
  margin-top: 12px;
}