:root{--ink:#14231d;--muted:#617067;--paper:#f7f7f2;--card:#fff;--green:#0d5a3f;--green2:#16a56b;--mint:#dff5e9;--line:#dce5df;--gold:#c8a44a;--shadow:0 18px 50px rgba(16,49,37,.10);--radius:22px;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.65}img{max-width:100%;height:auto}a{color:var(--green);text-decoration-thickness:.08em;text-underline-offset:.16em}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:1000;background:#fff;padding:10px 14px;border-radius:10px}.top-progress{position:fixed;left:0;top:0;height:3px;background:var(--green2);width:0;z-index:120}.site-header{position:sticky;top:0;z-index:100;background:rgba(247,247,242,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(13,90,63,.12)}.header-inner{max-width:var(--max);margin:auto;min-height:72px;display:flex;align-items:center;gap:20px;padding:10px 22px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:850}.brand img{width:40px;height:40px;border-radius:11px}.brand span{font-size:1.05rem;letter-spacing:-.02em}.main-nav{margin-left:auto;display:flex;gap:6px;align-items:center}.main-nav a{padding:8px 11px;border-radius:999px;text-decoration:none;color:#31443a;font-weight:700;font-size:.93rem}.main-nav a:hover,.main-nav a:focus-visible{background:#eaf2ed}.play{background:var(--green)!important;color:#fff!important}.menu-btn{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px 10px;font-weight:800}.mobile-nav{display:none;border-top:1px solid var(--line);padding:10px 22px 16px;gap:8px;flex-wrap:wrap}.mobile-nav.open{display:flex}.mobile-nav a{background:#fff;border:1px solid var(--line);padding:8px 10px;border-radius:10px;text-decoration:none;font-weight:750}.hero{background:linear-gradient(145deg,#063e2d 0%,#0b573e 60%,#0f6e4b 100%);color:#fff}.hero-inner{max-width:var(--max);margin:auto;padding:68px 22px 54px;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:42px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;font-weight:900;color:#66e2a1}.hero h1{font-size:clamp(2.5rem,6vw,5rem);line-height:.98;letter-spacing:-.05em;margin:14px 0 20px;max-width:900px}.hero p{font-size:1.16rem;max-width:760px;color:#d9eee4}.hero-figure{background:#fff;border-radius:28px;padding:12px;box-shadow:0 25px 80px rgba(0,0,0,.25);transform:rotate(1deg)}.hero-figure img{display:block;border-radius:18px;width:100%}.hero-actions,.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:850;border-radius:13px;padding:11px 16px;border:1px solid currentColor}.button.primary{background:#fff;color:#06402d;border-color:#fff}.button.green{background:var(--green);color:#fff;border-color:var(--green)}.button.ghost{color:#fff;border-color:rgba(255,255,255,.38)}.shell{max-width:var(--max);margin:auto;padding:34px 22px 72px}.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:18px}.breadcrumb a{text-decoration:none}.book-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:34px;align-items:start}.toc{position:sticky;top:92px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:0 8px 30px rgba(20,35,29,.05);max-height:calc(100vh - 112px);overflow:auto}.toc h2{font-size:.86rem;text-transform:uppercase;letter-spacing:.12em;margin:0 0 10px;color:var(--muted)}.toc a{display:block;padding:8px 10px;border-radius:10px;text-decoration:none;color:#2c4035;font-size:.9rem}.toc a:hover{background:#eef5f0}.toc .active{background:var(--mint);color:var(--green);font-weight:800}.page-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.page-head{padding:34px 34px 20px}.kicker{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--green2);font-weight:900}.page-head h1{font-size:clamp(2rem,4.2vw,3.6rem);line-height:1.02;letter-spacing:-.04em;margin:10px 0 14px}.lead{font-size:1.15rem;color:#43574d;max-width:800px}.meta-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px}.pill{background:#edf5f0;border:1px solid #d9e9df;border-radius:999px;padding:5px 9px;font-size:.78rem;font-weight:800;color:#355146}.feature-img{padding:0 34px 12px}.feature-img figure{margin:0;background:#eef3ef;border-radius:20px;padding:18px;text-align:center}.feature-img img{max-height:780px;border-radius:16px;box-shadow:0 12px 34px rgba(24,54,40,.16)}.feature-img figcaption{font-size:.82rem;color:var(--muted);margin-top:8px}.prose{padding:12px 34px 36px;font-size:1.02rem}.prose h2{font-size:1.6rem;line-height:1.18;margin:34px 0 12px;letter-spacing:-.02em}.prose h3{font-size:1.15rem;margin:26px 0 8px}.prose p{max-width:820px}.prose ul,.prose ol{max-width:820px;padding-left:22px}.prose li+li{margin-top:8px}.note{background:#eff8f2;border-left:4px solid var(--green2);border-radius:13px;padding:16px 18px;margin:24px 0}.warning{background:#fff7e5;border-left-color:#d6a11d}.fact-grid,.chapter-grid,.related-grid,.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:22px 0}.fact,.chapter-card,.related-card,.stat{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fbfcfa}.chapter-card{text-decoration:none;color:var(--ink);display:block;transition:transform .15s ease,box-shadow .15s ease}.chapter-card:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(20,35,29,.08)}.chapter-card small{color:var(--green2);font-weight:900;letter-spacing:.08em;text-transform:uppercase}.chapter-card h3{margin:6px 0 6px;font-size:1.12rem}.chapter-card p{margin:0;color:var(--muted);font-size:.9rem}.related-card{text-decoration:none;color:var(--ink)}.related-card strong{display:block}.related-card span{font-size:.86rem;color:var(--muted)}.book-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:26px}.book-nav a{border:1px solid var(--line);background:#fff;border-radius:16px;padding:16px;text-decoration:none}.book-nav .next{text-align:right}.book-nav small{display:block;color:var(--muted)}.source-box{margin-top:28px;padding:14px 16px;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted)}.site-footer{background:#0a3d2d;color:#dcece4}.footer-inner{max-width:var(--max);margin:auto;padding:38px 22px;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}.site-footer a{color:#fff}.footer-links{display:grid;gap:8px}.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.gallery figure{margin:0;background:#fff;border:1px solid var(--line);padding:10px;border-radius:16px}.gallery img{border-radius:11px;width:100%}.gallery figcaption{font-size:.82rem;color:var(--muted);padding:7px 3px 2px}.scenario-card{border:1px solid var(--line);border-radius:18px;padding:18px;background:#fff}.scenario-card h3{margin:4px 0}.scenario-card .difficulty{font-size:.77rem;font-weight:900;color:#fff;background:var(--green);border-radius:999px;padding:4px 8px}.search-box{display:flex;gap:8px;margin:18px 0}.search-box input{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:14px 16px;font:inherit}.search-results{display:grid;gap:10px}.search-result{background:#fff;border:1px solid var(--line);border-radius:14px;padding:15px;text-decoration:none;color:var(--ink)}.search-result strong{display:block}.search-result span{color:var(--muted);font-size:.9rem}.az{columns:3;column-gap:28px}.az a{display:block;break-inside:avoid;padding:4px 0}.faq details{border-top:1px solid var(--line);padding:16px 0}.faq summary{font-weight:850;cursor:pointer}.faq details p{color:#455a4f}.cover-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:26px}.cover-stat{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);padding:15px;border-radius:16px}.cover-stat strong{display:block;font-size:1.6rem}.index-list{counter-reset:page}.index-item{counter-increment:page;display:grid;grid-template-columns:54px 1fr auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}.index-item::before{content:counter(page,decimal-leading-zero);font-variant-numeric:tabular-nums;color:var(--green2);font-weight:900}.index-item small{color:var(--muted)}
@media(max-width:900px){.main-nav{display:none}.menu-btn{display:block}.hero-inner{grid-template-columns:1fr}.hero-figure{max-width:430px}.book-layout{grid-template-columns:1fr}.toc{position:static;max-height:none}.gallery{grid-template-columns:repeat(2,1fr)}.cover-grid{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1fr 1fr}.az{columns:2}}
@media(max-width:620px){.header-inner{padding:8px 14px;min-height:64px}.brand span{font-size:.96rem}.hero-inner{padding:44px 16px 38px}.shell{padding:24px 14px 56px}.page-head,.prose{padding-left:20px;padding-right:20px}.feature-img{padding-left:20px;padding-right:20px}.fact-grid,.chapter-grid,.related-grid,.stat-grid{grid-template-columns:1fr}.gallery{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.book-nav{grid-template-columns:1fr}.book-nav .next{text-align:left}.az{columns:1}.cover-grid{grid-template-columns:1fr 1fr}.index-item{grid-template-columns:44px 1fr}.index-item small{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.site-header,.toc,.book-nav,.top-progress,.site-footer{display:none!important}body{background:#fff}.shell{max-width:none;padding:0}.book-layout{display:block}.page-card{box-shadow:none;border:0}.page-head,.prose,.feature-img{padding-left:0;padding-right:0}a{color:inherit;text-decoration:none}}
/* V489 · página de vídeos usa o mesmo sistema visual do livro e componentes próprios. */
.video-page>.breadcrumb{max-width:var(--max);margin:0 auto;padding:24px 22px 0}
.video-page .video-toc{border-top:4px solid var(--green2)}
.video-page .video-card{border:1px solid var(--line);border-radius:20px;padding:20px;margin:0 0 22px;background:linear-gradient(180deg,#fff 0%,#fbfcfa 100%);box-shadow:0 10px 30px rgba(20,35,29,.06)}
.video-page .video-card.featured{border-color:#b9dec9;background:linear-gradient(180deg,#f4fbf7 0%,#fff 38%)}
.video-page .video-card h2{margin:8px 0 8px}
.video-label{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--mint);color:var(--green);font-size:.72rem;line-height:1;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.video-frame{position:relative;width:100%;aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:#081310;margin:18px 0;border:1px solid rgba(13,90,63,.18);box-shadow:0 16px 38px rgba(8,25,18,.16)}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-frame.is-short{max-width:390px;aspect-ratio:9/16;margin-inline:auto}
.video-page .prose .button{background:#fff;color:var(--green);border-color:#bdd7c9}
.video-page .prose .button.primary{background:var(--green);color:#fff;border-color:var(--green)}
.video-social-callout{margin:30px 0 22px;padding:20px;border-radius:18px;background:#0a3d2d;color:#e8f6ef}
.video-social-callout h3{margin:0 0 6px;color:#fff}
.video-social-callout p{margin:0 0 14px;color:#d4ebe0}
.video-social-links{display:flex;gap:8px;flex-wrap:wrap}
.video-social-links a{display:inline-flex;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff;text-decoration:none;font-weight:800}
.video-social-links a:hover,.video-social-links a:focus-visible{background:rgba(255,255,255,.18)}
@media(max-width:900px){.video-page>.breadcrumb{padding:18px 14px 0}.video-page .video-toc{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.video-page .video-toc h2{grid-column:1/-1}.video-page .video-toc a{margin:0}}
@media(max-width:620px){.video-page .video-card{padding:15px;border-radius:16px}.video-page .video-toc{grid-template-columns:1fr}.video-frame{border-radius:15px}.video-social-links{display:grid;grid-template-columns:1fr}.video-social-links a{justify-content:center}}