@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800&display=swap');
#toc a[hidden]{display:none}
:root{--navy:#102d42;--teal:#087b84;--cyan:#d9f1f2;--cream:#faf9f6;--paper:#fff;--ink:#173345;--muted:#66808a;--line:#dfe8e9;--amber:#ad6933;scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:Cairo,Tahoma,Arial,sans-serif;line-height:1.85}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.skip{position:absolute;top:-70px;right:20px;background:#fff;padding:8px;z-index:99}.skip:focus{top:10px}:focus-visible{outline:3px solid #19a5ac;outline-offset:3px}.shell{display:grid;grid-template-columns:270px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;overflow:auto;background:#fff;border-left:1px solid var(--line);padding:25px 18px;z-index:20}.brand{display:flex;align-items:center;gap:11px;color:var(--navy)}.brand-mark{display:grid;place-items:center;width:40px;height:40px;background:var(--teal);color:white;border-radius:11px;font-size:25px}.brand strong{display:block;font-family:Arial,sans-serif;font-size:18px;letter-spacing:.03em;line-height:1.25}.brand small{display:block;font:700 9px Arial,sans-serif;letter-spacing:.2em;color:var(--teal)}.sidebar-label,.eyebrow{font:700 11px Arial,sans-serif;letter-spacing:.16em;color:var(--teal)}.sidebar-label{margin:32px 3px 13px}.search-label{display:block;font-size:12px;font-weight:800;margin:0 2px 5px}.sidebar input{width:100%;background:#f7faf9;border:1px solid var(--line);border-radius:10px;padding:9px 13px;outline:none}.progress-track{height:3px;background:#e8eeee;margin:18px 2px 15px;border-radius:9px}.progress-track span{display:block;height:100%;width:0;background:var(--teal);border-radius:9px}#toc a{display:flex;gap:10px;align-items:center;border-radius:9px;padding:5px 8px;font-size:12px;color:#566b75;transition:background .2s,color .2s}#toc a small{font:700 10px Arial,sans-serif;color:#9baeb4;min-width:20px}#toc a:hover,#toc a.active{background:#e9f5f4;color:#066a73;font-weight:800}.back-top{display:block;border-top:1px solid var(--line);margin-top:18px;padding:16px 8px;font-size:12px;color:var(--teal)}main{min-width:0}.topbar{height:58px;display:flex;align-items:center;justify-content:space-between;background:rgba(250,249,246,.92);border-bottom:1px solid var(--line);padding:0 clamp(20px,4vw,70px);font-size:12px;color:var(--muted);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.topbar a{color:var(--teal);font-weight:800}#menu-toggle{display:none;background:none;border:0;color:var(--navy)}.content{max-width:1150px;margin:auto;padding:0 clamp(20px,4vw,70px)}.hero{margin:40px 0 18px;background:var(--navy);color:white;border-radius:22px;padding:clamp(30px,5vw,66px);overflow:hidden;position:relative}.hero:after{content:'';width:260px;height:260px;border:1px solid #4a6874;border-radius:50%;position:absolute;left:-100px;top:-100px;opacity:.5}.hero .eyebrow{color:#6dd7d3}.hero-grid{display:grid;grid-template-columns:1.7fr .7fr;gap:40px;align-items:end}.pill{display:inline-block;border:1px solid #4e8c94;color:#c5f7ee;padding:4px 13px;border-radius:40px;font-size:11px;margin:28px 0 10px}.hero h1{font-size:clamp(36px,4vw,68px);line-height:1.3;margin:0;letter-spacing:-.03em}.hero em{font-style:normal;color:#64d4cf}.hero p{max-width:620px;color:#c6d9df;font-size:15px;margin:22px 0}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.primary,.secondary{display:inline-block;padding:10px 22px;border-radius:9px;font-size:13px;font-weight:800}.primary{background:#0c929a;color:white}.secondary{border:1px solid #829da6;color:white}.hero-stat{background:#184257;border:1px solid #436579;border-radius:16px;padding:26px}.hero-stat>strong{display:block;font:700 70px Arial,sans-serif;line-height:1;color:#c5eee9}.hero-stat>span{display:block;margin:10px 0 28px;font-weight:700}.hero-stat div{border-top:1px solid #5b7988;padding-top:13px;color:#b9d7de;font-size:12px}.hero-stat b{color:white;margin-right:10px}.intro-strip{display:flex;flex-wrap:wrap;gap:8px 20px;padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:11px}.intro-strip b{color:var(--navy)}.chapter{padding:67px 0 55px;border-bottom:1px solid var(--line);scroll-margin-top:75px;animation:rise .45s ease both}.chapter h2{font-size:clamp(27px,3vw,42px);line-height:1.3;margin:12px 0 8px;color:var(--navy)}.chapter-lede{max-width:820px;font-size:15px;color:#405c68;margin-bottom:28px}.lesson-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0}.lesson{border:1px solid var(--line);background:#fff;padding:18px 21px;border-radius:11px}.lesson span{font-size:12px;color:var(--teal);font-weight:800}.lesson p{margin:8px 0 0;font-size:13px}.lesson.caution{background:#fffaf5;border-color:#efdcc8}.lesson.caution span{color:var(--amber)}.shot{margin:30px 0;background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden;box-shadow:0 12px 30px #10374d0b}.shot-open{display:block;width:100%;position:relative;background:#edf4f4;border:0;padding:0;overflow:hidden}.shot-open img{display:block;width:100%;height:auto;max-height:700px;object-fit:contain;transition:transform .3s}.shot-open:hover img{transform:scale(1.015)}.pin{position:absolute;top:20px;right:20px;background:var(--teal);color:#fff;width:37px;height:37px;border:3px solid white;border-radius:50%;display:grid;place-items:center;font:800 12px Arial,sans-serif;box-shadow:0 4px 12px #10374d40}.zoom{position:absolute;left:20px;bottom:20px;background:#ffffffed;color:var(--navy);border:1px solid var(--line);border-radius:7px;padding:4px 12px;font-size:11px;font-weight:800}.shot figcaption{padding:12px 17px;font-size:12px;color:#42606a}.shot figcaption b{color:var(--teal);margin-left:8px}.shot figcaption span{float:left;color:#8ca1a8;font-size:10px}.workflow{background:#eaf5f3;border-right:3px solid var(--teal);padding:20px 25px;margin:25px 0;border-radius:8px}.workflow strong{color:var(--navy)}.workflow ol{margin:12px 0;padding-right:20px}.workflow li{padding:4px}.workflow p{font-size:12px}.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:22px 0}.mini-grid>*{background:#fff;border:1px solid var(--line);border-radius:10px;padding:13px 18px;font-size:13px}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:11px;margin:30px 0}table{border-collapse:collapse;width:100%;min-width:600px;font-size:12px}th,td{text-align:right;border-bottom:1px solid var(--line);padding:9px 12px}th{background:#edf6f5;color:var(--navy)}td:first-child{font-family:Arial;color:#8ca1a8}.ok{color:#067a74;font-weight:800}.chapter-foot{display:flex;justify-content:space-between;margin-top:25px}.chapter-foot a{color:var(--teal);font-size:12px;font-weight:800}footer{padding:60px 0;color:var(--muted);text-align:center;font-size:11px}.lightbox{position:fixed;inset:0;background:#071922f2;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:18px}.lightbox[hidden]{display:none}.lightbox-tools{display:flex;gap:7px;align-items:center;color:#fff;margin-bottom:10px}.lightbox-tools button{background:#fff;border:0;border-radius:7px;width:38px;height:36px;color:var(--navy);font-size:20px}.lightbox-tools span{min-width:70px;text-align:center;font:12px Arial}.lightbox img{max-width:98vw;max-height:85vh;object-fit:contain;box-shadow:0 20px 50px #0008}.landing{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#f4f8f7,#fbf9f5)}.landing-card{width:min(850px,calc(100% - 35px));background:white;border:1px solid var(--line);padding:clamp(25px,6vw,70px);border-radius:24px;box-shadow:0 20px 70px #10374d12}.landing-card .eyebrow{margin-top:55px}.landing-card h1{font-size:clamp(35px,6vw,66px);line-height:1.2;color:var(--navy);margin:15px 0}.landing-card>p{color:#55717b;max-width:600px}.landing-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:32px 0}.landing-metrics div{background:#f3f8f7;border-radius:11px;padding:15px}.landing-metrics strong{display:block;color:var(--teal);font:700 25px Arial,sans-serif}.landing-metrics span{font-size:11px}.landing-note{display:block;color:#8ba2a7;margin-top:25px}@keyframes rise{from{opacity:.6;transform:translateY(10px)}to{opacity:1;transform:none}}@media(max-width:950px){.shell{grid-template-columns:1fr}.sidebar{position:fixed;right:0;top:0;width:min(300px,90vw);transform:translateX(110%);transition:transform .25s;box-shadow:0 0 40px #102d4230}.sidebar.open{transform:none}#menu-toggle{display:block}.hero-grid{grid-template-columns:1fr}.hero-stat{display:none}}@media(max-width:600px){.content{padding:0 16px}.topbar{padding:0 16px}.topbar span{display:none}.hero{margin-top:18px;padding:25px}.hero h1{font-size:36px}.lesson-grid,.mini-grid{grid-template-columns:1fr}.chapter{padding:48px 0}.shot figcaption span{float:none;display:block}.landing-metrics{grid-template-columns:repeat(2,1fr)}.intro-strip{display:block}.intro-strip span{display:block}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media print{@page{size:A4;margin:14mm}body{background:#fff;color:#000;font-size:10pt}.shell{display:block}.sidebar,.topbar,.hero-actions,.chapter-foot,.zoom,.lightbox{display:none!important}.content{padding:0;max-width:none}.hero{background:#fff!important;color:#000;border:1px solid #ccc;margin:0;padding:15mm}.hero h1,.hero em{color:#000}.hero p,.hero .eyebrow{color:#333}.hero-stat{display:none}.chapter{padding:10mm 0;border-color:#ddd;animation:none;break-before:page}.chapter h2{font-size:22pt}.lesson-grid{grid-template-columns:1fr 1fr}.lesson,.workflow,.mini-grid>*{background:#fff!important;border:1px solid #ccc}.shot{box-shadow:none;break-inside:avoid}.shot-open{background:#fff}.shot-open img{max-height:115mm;object-fit:contain}.pin{background:#fff;color:#000;border:1px solid #000;box-shadow:none}.intro-strip{margin:5mm 0}a{color:#000}.table-wrap{overflow:visible}table{min-width:0}tr{break-inside:avoid}}
