:root{--green:#174c3c;--green-2:#246b52;--gold:#e5b95c;--ink:#172a24;--muted:#65746d;--line:#dce6df;--paper:#fff;--soft:#f3f7f3;--shadow:0 16px 40px rgba(19,58,43,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fbfcfa;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}.topbar{height:70px;padding:0 clamp(18px,5vw,72px);display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid #edf1ed}.brand{font-size:.82rem;letter-spacing:.12em;font-weight:850;color:var(--green)}.top-link,.back-link{font-size:.9rem;color:var(--green-2);font-weight:650}.site-main{max-width:1120px;width:calc(100% - 36px);margin:0 auto;min-height:calc(100vh - 125px)}.site-footer{text-align:center;padding:26px 16px;color:#819087;font-size:.78rem;border-top:1px solid #edf1ed}.hero{padding:clamp(48px,8vw,94px) 0 48px;max-width:900px;margin:auto}.eyebrow{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--green-2);font-weight:800;margin:0 0 12px}.hero h1,.narrow-content h1,.book-page h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.08;letter-spacing:-.045em;margin:0 0 20px;max-width:780px}.hero-copy,.lead{font-size:1.1rem;color:var(--muted);max-width:680px}.version-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:32px}.version-card{background:white;border:1px solid var(--line);border-radius:18px;padding:22px;min-height:145px;display:flex;flex-direction:column;align-items:flex-start;gap:9px;box-shadow:0 4px 15px rgba(25,60,44,.025);transition:transform .18s,border-color .18s}.version-card:hover,.book-chip:hover{transform:translateY(-2px);border-color:#8bb49b}.version-card strong{font-size:1.03rem}.version-card>span:last-child{font-size:.82rem;color:var(--muted)}.round-icon,.welcome-mark{width:38px;height:38px;border-radius:50%;background:#e9f3eb;color:var(--green);display:grid;place-items:center;font-size:1.15rem;font-weight:800}.book-list-section{padding:32px 0 70px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:20px}.section-heading h2,.narrow-content h2{font-size:1.5rem;letter-spacing:-.025em;margin:0}.muted{color:var(--muted)}.section-heading .muted{max-width:300px;font-size:.9rem}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.book-chip{min-width:0;display:flex;align-items:center;gap:11px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 14px;font-size:.9rem;font-weight:650;transition:transform .18s,border-color .18s}.book-chip span{font-size:.68rem;color:#8a9a90;font-weight:800;letter-spacing:.04em}.narrow-content{max-width:720px;margin:0 auto;padding:clamp(38px,7vw,72px) 0}.narrow-content .back-link{display:inline-block;margin-bottom:34px}.welcome-mark{width:58px;height:58px;background:var(--green);color:#fff;font-size:1.8rem;margin-bottom:26px}.steps{display:grid;gap:14px;margin:28px 0 30px}.steps>div{display:flex;align-items:flex-start;gap:15px;padding:16px;border:1px solid var(--line);border-radius:13px;background:white}.steps>div>span{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:50%;background:#edf5ef;color:var(--green);font-weight:800}.steps p{margin:0;color:var(--muted);font-size:.92rem}.steps strong{color:var(--ink)}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 18px;border-radius:10px;font:inherit;font-size:.94rem;font-weight:750;border:1px solid transparent;cursor:pointer;transition:filter .15s,transform .15s}.button:hover{filter:brightness(.97);transform:translateY(-1px)}.primary{background:var(--green);color:#fff}.secondary{background:#e9f2eb;color:var(--green)}.outline{border-color:var(--line);background:white;color:var(--green)}.full{width:100%}.center{text-align:center}.small{font-size:.82rem}.selected-note{padding:12px 15px;background:#edf5ef;border-radius:10px;color:var(--green)}.book-page{max-width:850px;margin:0 auto;padding:40px 0 70px}.book-page>.back-link{display:inline-block;margin-bottom:35px}.book-page .lead{margin-bottom:26px}.video-frame{position:relative;overflow:hidden;border-radius:20px;background:#10241d;box-shadow:var(--shadow);aspect-ratio:16/9;margin:24px 0}.video-poster{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;cursor:pointer;background:#163d30;color:#fff;text-align:center}.video-poster img{width:100%;height:100%;object-fit:cover;display:block}.poster-placeholder{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:radial-gradient(ellipse at top right,#38745a,#123b2d 65%)}.play-icon{display:grid;place-items:center;width:68px;height:68px;border-radius:50%;background:var(--gold);color:#173b2c;font-size:1.6rem;padding-left:4px;box-shadow:0 5px 22px #061b14aa}.poster-title{font-size:clamp(1.3rem,3vw,2rem);font-weight:800}.poster-subtitle{color:#d0e3d6;font-size:.9rem}.play-badge{position:absolute;left:18px;bottom:18px;padding:10px 14px;background:#fff;color:var(--green);border-radius:99px;font-weight:800;font-size:.85rem}.video-player{position:absolute;inset:0;width:100%;height:100%}.video-player iframe,.video-player video{display:block;width:100%;height:100%;border:0;object-fit:contain;background:#000}.video-unavailable{height:100%;padding:30px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff}.video-unavailable p{color:#d4e3d9}.video-unavailable a{text-decoration:underline}.book-description{font-size:1rem}.book-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}.page-bg{background:linear-gradient(135deg,#f2f7f2,#fbfcfa 60%);min-height:100vh}.form-wrap{width:min(100% - 32px,540px);margin:0 auto;padding:32px 0}.form-wrap>.brand{display:inline-block;margin:5px 0 22px}.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(22px,5vw,38px);box-shadow:var(--shadow)}.panel h1{font-size:2rem;line-height:1.15;letter-spacing:-.04em;margin:0 0 10px}.panel>.muted{font-size:.92rem;margin:0 0 24px}form label{display:block;font-size:.88rem;font-weight:750;margin:17px 0 7px}form label>span{color:#bb5b3b}form label small{font-weight:500;color:var(--muted)}input[type=text],input[type=email],input[type=tel],select{width:100%;min-height:46px;padding:11px 12px;border:1px solid #cfdcd2;border-radius:9px;background:#fff;color:var(--ink);font:inherit;font-size:.95rem}input:focus,select:focus{outline:3px solid #d9eadf;border-color:var(--green-2)}.check-row{display:flex;align-items:flex-start;gap:10px;font-weight:500!important;color:var(--muted);font-size:.82rem!important}.check-row input{margin-top:5px;accent-color:var(--green)}.check-row span{color:var(--muted)}form .button{margin-top:20px}.fine-print{font-size:.73rem;color:#819087;line-height:1.5;margin:18px 0 0}.messages{margin:12px 0}.message{padding:10px 12px;border-radius:8px;background:#fff2ee;color:#9d3f2a;font-size:.88rem}.message.success{background:#eaf6ed;color:#225c3a}
@media(max-width:700px){.version-grid{grid-template-columns:1fr}.version-card{min-height:auto;display:grid;grid-template-columns:40px 1fr;align-items:center;column-gap:12px}.version-card .round-icon{grid-row:span 2}.version-card>span:last-child{grid-column:2}.section-heading{display:block}.section-heading .muted{margin-top:8px}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.book-chip{padding:11px 10px;font-size:.82rem;gap:8px}.book-page{padding-top:28px}.video-frame{border-radius:12px;aspect-ratio:4/3}.book-actions .button{flex:1}.topbar{height:62px}.hero{padding-top:48px}}@media(max-width:390px){.book-grid{grid-template-columns:1fr}.hero h1,.narrow-content h1,.book-page h1{font-size:2.2rem}}