/* K-BOOKS · MASTER 정보통신기능사 · dedicated pages R4
   Scoped to .kbc4. Existing K-BOOKS theme untouched. */
.kbc4{--kbc-ink:#173849;--kbc-teal:#0b8583;--kbc-line:#d9e5e6;--kbc-muted:#657b83;--kbc-gold:#a18449;background:#fff;color:var(--kbc-ink);font-family:inherit}
.kbc4 *{box-sizing:border-box}.kbc4 a{text-decoration:none}.kbc4 .shell{width:min(1120px,calc(100% - 38px));margin:0 auto}
.kbc4 .breadcrumb{font-size:12px;color:#647a80;padding:23px 0}.kbc4 .breadcrumb a{color:#246b70}
.kbc4 .hero{background:linear-gradient(120deg,#123541,#1d4854);color:#fff;padding:55px 0 60px}
.kbc4 .hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 238px;gap:52px;align-items:center}
.kbc4 .eyebrow{font-size:11px;letter-spacing:.15em;font-weight:850;color:#8fdfd7}
.kbc4 h1{font-size:clamp(29px,4.15vw,53px);letter-spacing:-.055em;line-height:1.22;margin:13px 0 18px;color:inherit;word-break:keep-all}
.kbc4 .lead{color:#dbe8e7;font-size:15px;line-height:1.85;margin:0;max-width:730px;word-break:keep-all}
.kbc4 .cover{display:block;width:100%;height:auto;box-shadow:0 20px 35px rgba(0,0,0,.25);border:1px solid rgba(255,255,255,.28)}
.kbc4 .tags{display:flex;gap:9px;flex-wrap:wrap;margin:20px 0}.kbc4 .tags span{font-size:11px;border:1px solid rgba(255,255,255,.22);padding:6px 10px;color:#edf6f4}
.kbc4 .buttons{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.kbc4 .btn{min-height:48px;display:inline-flex;align-items:center;justify-content:center;padding:12px 17px;background:#fff;color:#164150;font-size:13px;font-weight:850;border:1px solid #fff;border-radius:6px}.kbc4 .btn.secondary{background:transparent;color:#fff;border-color:#8fadb2}.kbc4 .btn.pending{background:#dce6e3;color:#4c686c;border-color:#dce6e3;cursor:default}
.kbc4 .section{padding:48px 0}.kbc4 .section:nth-of-type(even){background:#f7faf9}
.kbc4 .kicker{color:#17827d;font-size:11px;font-weight:900;letter-spacing:.1em}.kbc4 h2{margin:8px 0 13px;color:#193d4a;font-size:clamp(23px,3vw,31px);line-height:1.32;letter-spacing:-.045em}.kbc4 .intro{font-size:13px;line-height:1.85;color:var(--kbc-muted);margin:0 0 21px;word-break:keep-all}
.kbc4 .unit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.kbc4 .unit{display:flex;flex-direction:column;gap:9px;background:#fff;border:1px solid var(--kbc-line);padding:22px;min-height:160px;color:var(--kbc-ink);border-radius:8px;transition:border-color .2s,transform .2s}.kbc4 .unit:hover{border-color:#0b8583;transform:translateY(-2px)}.kbc4 .unit small{color:#977e50;font-size:11px;font-weight:850}.kbc4 .unit strong{font-size:19px;line-height:1.35;word-break:keep-all}.kbc4 .unit span{color:#677d84;font-size:12px;line-height:1.7}.kbc4 .unit em{margin-top:auto;font-size:11px;font-style:normal;font-weight:800;color:#0b807e}
.kbc4 .route{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.kbc4 .route>div{padding:19px 16px;border:1px solid var(--kbc-line);border-top:3px solid #0b8583;background:#fff}.kbc4 .route small{font-size:11px;color:#a18449;font-weight:800}.kbc4 .route strong{display:block;margin:7px 0;font-size:16px}.kbc4 .route p{margin:0;font-size:12px;color:#657b83;line-height:1.6}
.kbc4 .book-row{display:grid;grid-template-columns:135px minmax(0,1fr);gap:25px;align-items:center;padding:24px;background:#f4f8f7;border:1px solid var(--kbc-line);border-radius:8px}.kbc4 .book-row img{width:100%;height:auto}.kbc4 .book-row strong{font-size:22px}.kbc4 .book-row p{font-size:13px;color:#657b83;line-height:1.8}.kbc4 .book-row a{display:inline-block;background:#173849;color:#fff;padding:11px 15px;font-size:12px;font-weight:800;border-radius:5px}
.kbc4 .notice{margin-top:22px;border-left:3px solid #b68d48;padding:14px 18px;background:#fff9ed;color:#635e4e;font-size:12px;line-height:1.8}
.kbc4 .meta-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.kbc4 .meta-grid div{padding:14px 18px;border:1px solid #dbe5e5;background:white}.kbc4 .meta-grid small{display:block;color:#668087;font-size:11px;margin-bottom:5px}.kbc4 .meta-grid strong{font-size:14px;color:#183b49}
@media(max-width:780px){.kbc4 .hero{padding:35px 0 43px}.kbc4 .hero-grid{grid-template-columns:minmax(0,1fr) 128px;gap:18px}.kbc4 .hero h1{font-size:30px}.kbc4 .lead{font-size:13px}.kbc4 .unit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.kbc4 .route{grid-template-columns:repeat(2,minmax(0,1fr))}.kbc4 .section{padding:36px 0}}
@media(max-width:480px){.kbc4 .hero-grid{grid-template-columns:1fr}.kbc4 .cover{display:none}.kbc4 .hero h1{font-size:30px}.kbc4 .unit-grid,.kbc4 .route,.kbc4 .meta-grid{grid-template-columns:1fr}.kbc4 .unit{min-height:130px}.kbc4 .book-row{grid-template-columns:100px minmax(0,1fr);gap:14px;padding:15px}.kbc4 .book-row strong{font-size:16px}.kbc4 .book-row p{font-size:11px}.kbc4 .buttons .btn{width:100%}}