:root{--bg:#111a22;--panel:#1a2630;--panel-light:#202f3a;--line:#354651;--ink:#edf3f6;--muted:#b1c0cb;--accent:#8bc8f4;--mono:ui-monospace,SFMono-Regular,Consolas,monospace}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.8 system-ui,sans-serif}header,main,footer{max-width:1120px;margin:auto}header{padding:26px 0;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);font-size:13px}.brand{font-weight:800;letter-spacing:1px}.brand span{color:var(--accent)}header a{text-decoration:none}nav{display:flex;gap:28px}a{color:inherit;text-underline-offset:4px}a:hover{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:5px}.skip{position:absolute;top:-100px;left:20px;padding:12px;background:var(--panel);z-index:10}.skip:focus{top:10px}.intro{padding:65px 0 35px}h1{font-size:clamp(58px,8vw,94px);font-weight:650;letter-spacing:-5px;line-height:1.06;margin:22px 0}h1 span{color:var(--accent)}.eyebrow,.badge{font-family:var(--mono);font-size:11px;letter-spacing:1px;color:var(--accent);font-weight:500}.lead{color:var(--muted);font-size:19px;line-height:1.7;margin:26px 0}.intro-meta{display:flex;gap:25px;flex-wrap:wrap;font:11px/1.8 var(--mono);color:var(--muted)}.intro-meta span:before{content:'＋';color:var(--accent);margin-right:7px}.lesson-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);margin:0 0 20px}.lesson-nav a{padding:19px 16px;text-decoration:none;font-size:13px;border-right:1px solid var(--line)}.lesson-nav a:last-child{border:0}.lesson-nav span{font:11px var(--mono);color:var(--accent);margin-right:9px}.lesson-nav a:hover{background:var(--panel)}.lesson{border-bottom:1px solid var(--line);padding:55px 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span{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.cards article{padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:3px}.cards p{font-size:13px;color:var(--muted);line-height:1.8}.cards .value{font-size:18px;color:var(--ink);line-height:1.5;overflow-wrap:anywhere;margin:12px 0}.badge{font-size:11px;letter-spacing:.5px}.cards .tip{font-size:12px;color:var(--accent);border-top:1px solid var(--line);padding-top:13px;margin-top:20px}.lesson-card{background:var(--panel-light)!important}.lookup-status{margin:18px 0 30px;font-size:13px;color:var(--muted)}details{border:1px solid var(--line);margin-top:24px;padding:17px 22px;background:#15212b;border-radius:3px}summary{font-size:13px;font-weight:600;cursor:pointer;min-height:25px}details p,details li{font-size:13px;color:var(--muted)}details li{margin:12px 0}details strong{color:var(--ink)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}.permission .badge{display:block;margin-bottom:14px}.permission button{margin-top:10px}#geo-status{overflow-wrap:anywhere}.permission-list{margin:20px 0 0}.permission-list>div{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:9px 0;font-size:13px}.permission-list dd{margin:0;color:var(--accent)}.table-wrap{overflow:auto;margin-top:15px}table{width:100%;border-collapse:collapse;font-size:13px;line-height:1.8;min-width:600px;text-align:left}caption{text-align:left;font-size:12px;color:var(--muted);padding-bottom:17px}th,td{padding:13px 15px;border-bottom:1px solid var(--line);vertical-align:top}td{color:var(--muted)}th{font-weight:600}th:first-child{min-width:120px}.tool label:not(.quiz-choice){font-size:13px;display:block;margin:20px 0 9px;font-weight:600}input[type=text]{width:100%;background:#111b23;border:1px solid #637c8d;border-radius:3px;color:var(--ink);padding:14px;font:13px/1.6 var(--mono)}#url-status,#quiz-status{color:var(--accent);font-size:13px;line-height:1.8}.url-facts{display:grid;grid-template-columns:180px 1fr;font-size:13px;margin:23px 0}.url-facts dt,.url-facts dd{padding:12px 0;border-bottom:1px solid var(--line)}.url-facts dt{color:var(--muted)}.url-facts dd{margin:0;overflow-wrap:anywhere}.url-facts+p{color:var(--muted);font-size:13px}#url-results p{font-size:13px;color:var(--muted)}#quiz fieldset{padding:0 0 25px;margin:0 0 25px;border:0;border-bottom:1px solid var(--line)}#quiz fieldset:last-child{margin-bottom:0}#quiz legend{font-size:15px;font-weight:600;line-height:1.6;padding:0 0 12px}.quiz-choice{display:flex;align-items:start;gap:10px;padding:10px 13px;min-height:44px;font-size:13px;line-height:1.7;cursor:pointer;border:1px solid transparent;border-radius:3px}.quiz-choice:has(input:checked){background:#263d4c;border-color:#537487}.quiz-choice:hover{background:#22323e}.quiz-choice input{margin-top:3px}.quiz-feedback{padding:14px 16px;border-left:2px solid var(--accent);background:#14212b;font-size:13px;color:var(--muted)}.takeaway{padding:55px 0 65px;max-width:850px}.takeaway h2{font-size:36px}.takeaway>p,.takeaway li{color:var(--muted);font-size:13px}.takeaway ul{padding-left:20px}.takeaway li{padding-left:5px;margin:10px 0}.notice{border:1px solid var(--line);padding:20px}footer{border-top:1px solid var(--line);padding:25px 0;display:flex;justify-content:space-between;gap:25px;font-size:11px;color:var(--muted)}@media(max-width:1250px){header,main,footer{margin-left:6%;margin-right:6%}}@media(max-width:850px){.cards{grid-template-columns:1fr 1fr}.lesson-nav{grid-template-columns:1fr 1fr}.lesson-nav a:nth-child(2){border-right:0}.lesson-nav a:nth-child(-n+2){border-bottom:1px solid var(--line)}.two-col{grid-template-columns:1fr}.section-title{align-items:start}.section-title>p{max-width:200px}.choice-grid{gap:20px}}@media(max-width:550px){.cards,.choice-grid{grid-template-columns:1fr}h1{letter-spacing:-3px}.lead{font-size:17px}.intro{padding-top:40px}.intro-meta{gap:8px 20px;font-size:11px}.gate,.permission,.tool{padding:22px}.results-top,.section-title{display:block}.section-title>p{max-width:none;margin-top:16px}.section-title>p br{display:none}.section-title h2{font-size:26px}.result-actions{gap:12px}.actions{flex-direction:column}.group-title{display:block}.group-title span{display:block;margin-top:5px}.lesson-nav a{font-size:11px;padding:16px 10px}.lesson-nav span{font-size:11px;margin-right:5px}.cards article{padding:22px}.lesson{padding:40px 0}header{font-size:11px}header nav{gap:16px}footer{font-size:11px}.url-facts{grid-template-columns:1fr}.url-facts dt{border:0;padding-bottom:0}.url-facts dd{padding-top:4px}.quiz-choice{padding-left:0;padding-right:0}details{padding:15px}.takeaway h2{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{body{background:white;color:#111}header,footer,.gate,.lesson-nav,button,.actions,.skip{display:none}.intro{padding:20px 0}h1{font-size:46px;color:#111}h1 span,.eyebrow,.badge,.muted,.lead{color:#333}.cards article,.tool,.permission,.takeaway,details{background:white;border:1px solid #ccc;color:#111;break-inside:avoid}.cards p,.gate p,.permission p,.tool p,.takeaway p,.takeaway li,.cards .value{color:#222}.cards{grid-template-columns:1fr 1fr}.lesson{padding:20px 0}.section-title>p{color:#333}}

.camera-section{border-top:1px solid var(--line);padding-top:23px;margin-top:28px}.camera-section>p{font-size:13px;color:var(--muted)}.camera-section .muted{font-size:13px}#camera-video{width:100%;max-width:640px;max-height:480px;aspect-ratio:4/3;object-fit:contain;background:#080e13;border:1px solid var(--line);border-radius:3px;transform:scaleX(-1);display:block;margin:20px 0}#camera-status{font-size:13px;color:var(--accent)}

.hello-card h2{margin:10px 0 18px}.hello-card strong{color:var(--ink)}#hello-panel{margin-top:28px;border-top:1px solid var(--line);padding-top:24px}#hello-preview{white-space:pre-wrap;overflow-wrap:anywhere;max-height:380px;overflow:auto;background:var(--bg);border:1px solid var(--line);border-radius:3px;padding:18px;font:12px/1.8 var(--mono);color:var(--ink)}.hello-consent{align-items:flex-start;line-height:1.8;margin-top:20px}.hello-consent input{margin-top:5px}#hello-status{color:var(--accent);overflow-wrap:anywhere}

#hello-options{border:0;padding:0;margin:0 0 28px;min-width:0}#hello-options legend{font-size:18px;font-weight:650;padding:0}.hello-media-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.hello-media-card{border:1px solid var(--line);border-radius:3px;padding:20px;min-width:0}.hello-media-card h3{font-size:17px;margin-bottom:12px}.hello-media-card video,.hello-media-card img{display:block;width:100%;max-height:360px;object-fit:contain;background:#080e13;border:1px solid var(--line);border-radius:3px;margin:18px 0}.hello-media-card p{overflow-wrap:anywhere}.hello-media-card video{transform:scaleX(-1)}#hello-disclaimer{border-left:2px solid var(--accent);padding-left:16px}@media(max-width:700px){.hello-media-grid{grid-template-columns:1fr}.hello-media-card{padding:18px}}