.book-nav{display:flex;gap:28px;align-items:center;color:#536d81;font-size:14px;font-weight:650}.book-nav a:hover{color:var(--blue)}
.book-hero{background:linear-gradient(120deg,#f7fbff 0%,#e9f3fe 75%,#dfedfc 100%);border-bottom:1px solid #dce8f5;overflow:hidden}.book-hero-inner{display:grid;grid-template-columns:1fr .8fr;align-items:center;gap:70px;padding:85px 0 90px}.book-copy h1{font-size:clamp(38px,4.2vw,60px);line-height:1.32;font-weight:830;margin:20px 0 22px}.book-copy h1 em{font-style:normal;color:#1d689e}.book-intro{max-width:590px;font-size:16px;color:#536f84;line-height:2}.book-meta{display:flex;flex-direction:column;gap:4px;color:#617c90;font-size:13px;border-left:2px solid #a7cbe5;padding-left:15px;margin:28px 0 30px}.cover-area{display:flex;flex-direction:column;align-items:center}.cover-placeholder{width:min(100%,320px);aspect-ratio:3/4;display:flex;flex-direction:column;justify-content:space-between;padding:27px;color:#d8eaf8;background:linear-gradient(150deg,#174f7d,#102e4c);border:1px solid #2a638e;box-shadow:0 30px 60px rgba(15,53,87,.22);border-radius:5px 13px 13px 5px}.cover-top{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:.16em;color:#aecce2}.cover-top span{font-size:27px;line-height:1}.cover-center{border:1px solid rgba(212,232,247,.3);border-radius:11px;padding:28px 22px;text-align:center}.cover-center span,.cover-center strong,.cover-center small{display:block}.cover-center span{font-size:13px;color:#afcde2}.cover-center strong{font-size:27px;color:#fff;margin:9px 0}.cover-center small{font-size:11px;color:#a7c4da}.cover-bottom{font-size:12px;letter-spacing:.1em;color:#c2d9e9}.cover-bottom span{margin:0 8px}.cover-caption{color:#8198a9;font-size:11px;margin-top:19px;text-align:center}.book-channels{background:#fff}.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.channel-card{min-height:210px;background:#f7fbff;border:1px solid #dbe8f1;border-radius:18px;padding:25px;display:flex;flex-direction:column;justify-content:space-between;gap:20px}.channel-number{font-size:10px;font-weight:800;letter-spacing:.12em;color:#86a5bb}.channel-card h3{font-size:24px;margin:12px 0 4px}.channel-card p{font-size:13px;color:#6b8295}.channel-status{align-self:flex-start;padding:6px 12px;border-radius:50px;background:#e8f1f8;color:#56758d;font-size:12px;font-weight:700}.book-community{background:#f4f9fd;padding-top:75px;padding-bottom:75px}.community-panel{display:grid;grid-template-columns:1fr 260px;gap:45px;align-items:center;background:#fff;border:1px solid #dce9f3;border-radius:24px;padding:54px 64px;box-shadow:var(--shadow)}.community-copy h2{font-size:clamp(31px,3vw,44px);line-height:1.4}.community-copy p{max-width:490px;font-size:15px;color:#657e91;margin:20px 0 17px}.community-note{font-size:12px;color:#7992a4}.qr-block{text-align:center}.qr-placeholder{width:190px;height:190px;margin:auto;background:#f5faff;border:1px dashed #a9c8de;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#50738c}.qr-mark{font-size:38px;line-height:1;color:#6d9fc2;margin-bottom:13px}.qr-placeholder strong{font-size:14px}.qr-placeholder small{font-size:11px;color:#809caf;margin-top:5px}.qr-block p{font-size:13px;font-weight:700;margin-top:14px}.qr-block>small{font-size:11px;color:#8ca2b2}.book-next{padding:65px 0;background:#eaf4fc}.book-next-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}.book-next h2{font-size:32px}.book-next p{font-size:13px;color:#6b8295;margin-top:10px}@media(max-width:820px){.book-hero-inner{grid-template-columns:1fr;gap:48px;padding:65px 0}.channel-grid{grid-template-columns:1fr 1fr}.community-panel{grid-template-columns:1fr;padding:40px;gap:32px}.qr-block{text-align:left}.qr-placeholder{margin-left:0}.book-next-inner{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.book-nav{gap:15px;font-size:12px}.book-nav a:last-child{display:none}.book-hero-inner{padding:48px 0 58px}.book-copy h1{font-size:36px}.book-intro{font-size:14px}.cover-placeholder{max-width:260px}.channel-grid{grid-template-columns:1fr}.channel-card{min-height:160px}.community-panel{padding:30px 24px}.book-next h2{font-size:28px}}