.kbic{--navy:#163744;--deep:#102d37;--teal:#0d7d7b;--gold:#98733a;--ink:#1c2b31;--muted:#687980;--line:#dde5e7;--soft:#f7faf9;width:min(1120px,calc(100% - 32px));margin:0 auto;padding:42px 0 86px;color:var(--ink)}
.kbic *{box-sizing:border-box}.kbic a{text-decoration:none}.kbic img{max-width:100%;height:auto}
.kbic-crumb{margin-bottom:15px;color:#7b8a8f;font-size:11px}.kbic-crumb a{color:#526970}.kbic-crumb i{margin:0 7px;color:#b5c0c3}
.kbic-hero{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:36px;align-items:start;padding:34px 0 40px;border-bottom:1px solid var(--line)}
.kbic-kicker{display:block;color:var(--gold);font-size:9px;font-weight:900;letter-spacing:.14em}
.kbic-hero h1,.kbic-compare-hero h1{margin:8px 0 12px;color:var(--deep);font-size:38px;line-height:1.18;letter-spacing:-.05em}
.kbic-hero .lead,.kbic-compare-hero p{max-width:790px;margin:0;color:#53676e;font-size:14px;line-height:1.85}
.kbic-hero .lead strong,.kbic-compare-hero strong{color:#153d48}
.kbic-choice-note{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:20px}
.kbic-choice-note a,.kbic-choice-note div{padding:13px 14px;border:1px solid var(--line);background:var(--soft)}
.kbic-choice-note small,.kbic-route small,.kbic-card small,.kbic-book small{display:block;color:#89979b;font-size:7px;font-weight:900;letter-spacing:.09em}
.kbic-choice-note strong,.kbic-route strong{display:block;margin-top:4px;color:#24444e;font-size:12px}
.kbic-choice-note span,.kbic-route span{display:block;margin-top:3px;color:#74858b;font-size:9px;line-height:1.5}
.kbic-cover-card{position:sticky;top:20px;padding:16px;border:1px solid var(--line);background:#fff}
.kbic-cover-card img{display:block;width:100%;max-height:350px;object-fit:contain;background:#fafafa}
.kbic-spec{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:12px}.kbic-spec span{padding:8px;background:var(--soft);color:#64767c;font-size:8px;line-height:1.4}.kbic-spec b{display:block;color:#243f48;font-size:10px}
.kbic-actions{display:grid;gap:7px;margin-top:10px}.kbic-actions a{display:flex;align-items:center;justify-content:center;min-height:42px;padding:9px 10px;border:1px solid #cfdadc;color:#294b55;font-size:9px;font-weight:900;text-align:center}
.kbic-actions a.primary{border-color:var(--deep);background:var(--deep);color:#fff}.kbic-actions a:hover{border-color:var(--teal)}
.kbic-section{padding:36px 0;border-bottom:1px solid var(--line)}.kbic-section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:18px}
.kbic-section-head small{display:block;color:var(--gold);font-size:8px;font-weight:900;letter-spacing:.12em}.kbic-section-head h2{margin:5px 0 0;color:var(--deep);font-size:25px;letter-spacing:-.04em}
.kbic-section-head p{max-width:470px;margin:0;color:var(--muted);font-size:11px;line-height:1.7;text-align:right}
.kbic-diff{display:grid;grid-template-columns:1fr 1fr;gap:10px}.kbic-diff article{padding:20px;border:1px solid var(--line);background:#fff}.kbic-diff article.free{background:var(--soft)}
.kbic-diff h3,.kbic-card h3,.kbic-book h3{margin:6px 0 8px;color:#1f414b;font-size:17px}.kbic-diff p,.kbic-card p,.kbic-book p{margin:0;color:#667980;font-size:11px;line-height:1.75}.kbic-diff ul{margin:12px 0 0;padding-left:17px;color:#586e75;font-size:10px;line-height:1.75}
.kbic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.kbic-card{padding:18px;border:1px solid var(--line);background:#fff}
.kbic-preview{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.kbic-preview a{display:block;padding:7px;border:1px solid var(--line);background:#fff}.kbic-preview img{display:block;width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;background:#f3f5f5}.kbic-preview span{display:block;padding:7px 3px 1px;color:#5f7278;font-size:8px;font-weight:800}
.kbic-empty{padding:20px;border:1px solid var(--line);background:var(--soft);color:#687a80;font-size:11px;line-height:1.75}
.kbic-buy{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:20px;align-items:center;padding:25px;border:1px solid #bdd3d4;background:#f1f8f7}.kbic-buy small{color:var(--gold);font-size:8px;font-weight:900;letter-spacing:.1em}.kbic-buy h2{margin:5px 0 7px;color:#153b45;font-size:24px;letter-spacing:-.04em}.kbic-buy p{margin:0;color:#61757b;font-size:11px;line-height:1.75}.kbic-buy .kbic-actions{margin:0}
.kbic-faq details{border-top:1px solid var(--line)}.kbic-faq details:last-child{border-bottom:1px solid var(--line)}.kbic-faq summary{cursor:pointer;padding:15px 4px;color:#294751;font-size:12px;font-weight:900}.kbic-faq p{margin:0;padding:0 4px 16px;color:#687980;font-size:11px;line-height:1.75}
.kbic-compare-hero{padding:34px 0 28px;border-bottom:1px solid var(--line)}
.kbic-route{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:22px}.kbic-route a{padding:14px;border:1px solid var(--line);background:#fff}
.kbic-table-wrap{overflow:auto;border:1px solid var(--line)}.kbic-table{width:100%;min-width:780px;border-collapse:collapse;background:#fff}.kbic-table th,.kbic-table td{padding:13px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.kbic-table th{background:#f4f7f7;color:#5c7077;font-size:9px}.kbic-table td{color:#536970;font-size:10px;line-height:1.6}.kbic-table td strong{color:#193c47;font-size:11px}.kbic-table a{color:#0b6e70;font-weight:900}
.kbic-books{display:grid;grid-template-columns:1fr 1fr;gap:10px}.kbic-book{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:16px;border:1px solid var(--line);background:#fff}.kbic-book img{width:120px;height:168px;object-fit:contain;background:#fafafa}.kbic-book-meta{display:flex;flex-wrap:wrap;gap:5px;margin:9px 0}.kbic-book-meta span{padding:4px 6px;background:var(--soft);color:#60747a;font-size:7px;font-weight:800}.kbic-book-actions{display:flex;flex-wrap:wrap;gap:6px}.kbic-book-actions a{padding:7px 9px;border:1px solid #cfdadc;color:#2c5059;font-size:8px;font-weight:900}.kbic-book-actions a.buy{border-color:var(--deep);background:var(--deep);color:#fff}
@media(max-width:900px){.kbic-hero{grid-template-columns:1fr 220px}.kbic-grid{grid-template-columns:1fr 1fr}.kbic-route{grid-template-columns:1fr 1fr}.kbic-books{grid-template-columns:1fr}.kbic-preview{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.kbic{width:calc(100% - 24px);padding-top:24px}.kbic-hero{grid-template-columns:1fr}.kbic-cover-card{position:static;max-width:330px}.kbic-hero h1,.kbic-compare-hero h1{font-size:30px}.kbic-choice-note,.kbic-diff,.kbic-grid,.kbic-buy{grid-template-columns:1fr}.kbic-section-head{display:block}.kbic-section-head p{margin-top:8px;text-align:left}.kbic-preview{grid-template-columns:repeat(2,1fr)}.kbic-route{grid-template-columns:1fr 1fr}.kbic-buy{padding:20px}}
@media(max-width:430px){.kbic-route{grid-template-columns:1fr}.kbic-book{grid-template-columns:90px minmax(0,1fr)}.kbic-book img{width:90px;height:126px}}


/* v1.3 · mobile conversion-page audit */
@media(max-width:680px){
  .kbic-kicker,.kbic-choice-note small,.kbic-route small,.kbic-card small,.kbic-book small,.kbic-section-head small,.kbic-buy small{font-size:10px;line-height:1.4}
  .kbic-choice-note span,.kbic-route span,.kbic-spec span,.kbic-preview span,.kbic-book-meta span{font-size:10px;line-height:1.5}
  .kbic-diff p,.kbic-card p,.kbic-book p,.kbic-buy p,.kbic-faq p{font-size:12px;line-height:1.7}
  .kbic-actions a,.kbic-book-actions a{min-height:44px;padding:10px 11px;font-size:11px;line-height:1.35}
  .kbic-faq summary{min-height:46px;font-size:13px;line-height:1.5}
}
@media(max-width:430px){
  .kbic-book-actions{display:grid;grid-template-columns:1fr}
  .kbic-book-actions a{justify-content:center}
}