/* GlobalVet Imaging Academy — design system
   Dark reading-room base · GVC cream + copper accents · Fraunces / Source Sans 3 / IBM Plex Mono */
:root{
  --bg:#070B10; --bg-2:#0B121A; --bg-3:#111B26; --panel:#0E1620; --line:#1E2A36; --line-2:#2A3947;
  --ink:#F3EEDD; --ink-2:#C9C3B3; --muted:#8A94A0;
  --cream:#F7F3E4; --paper:#FFFCF4;
  --copper:#C4A574; --copper-2:#E1C48F; --copper-d:#8C6A3D;
  --cyan:#5FD3F3; --cyan-d:#1B7F9E; --ok:#4CC38A; --warn:#F2B84B; --bad:#F26D6D; --violet:#A78BFA;
  --xr:#5FD3F3; --ct:#F2B84B; --mri:#A78BFA; --us:#4CC38A;
  --serif:"Fraunces","Iowan Old Style",Georgia,serif;
  --sans:"Source Sans 3","Avenir Next",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,monospace;
  --max:1240px; --r:18px; --r-s:10px;
  --shadow:0 30px 80px rgba(0,0,0,.55);
  --glow:0 0 0 1px rgba(196,165,116,.25), 0 20px 60px rgba(196,165,116,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:18px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(1200px 600px at 15% -10%, rgba(95,211,243,.10), transparent 60%),
             radial-gradient(900px 500px at 90% 10%, rgba(196,165,116,.10), transparent 60%);}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
.wrap{width:min(var(--max),calc(100% - 40px));margin:0 auto;position:relative;z-index:1}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--copper)}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;letter-spacing:-.02em;margin:0 0 .4em;color:var(--ink)}
h1{font-size:clamp(44px,7.2vw,92px);line-height:.95;font-variation-settings:"opsz" 144}
h2{font-size:clamp(32px,4.6vw,56px);line-height:1.02}
h3{font-size:24px;line-height:1.2}
p{margin:0 0 1em;color:var(--ink-2)}
.lede{font-size:21px;max-width:44ch;color:var(--ink-2)}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
.grad{background:linear-gradient(90deg,var(--copper-2),var(--copper) 40%,var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.sr{position:absolute;left:-9999px}

/* nav */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(18px);background:rgba(7,11,16,.78);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:20px}
.brand .mark{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,var(--copper-2),var(--copper-d));color:#0B1F2A;font-weight:700;font-family:var(--mono);box-shadow:var(--glow)}
.brand small{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;line-height:1}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{padding:8px 12px;border-radius:9px;font-size:15px;color:var(--ink-2)}
.nav-links a:hover,.nav-links a.on{background:var(--bg-3);color:var(--ink)}
.nav-links a.btn{color:#1A1408;font-weight:700}
.nav-links a.btn:hover{background:linear-gradient(135deg,var(--copper-2),var(--copper));color:#1A1408}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:9px;padding:8px 10px}
@media(max-width:900px){.nav-links{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:var(--bg-2);padding:12px 20px 18px;border-bottom:1px solid var(--line)}.nav-links.open{display:flex}.burger{display:block}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 22px;border-radius:12px;border:1px solid transparent;font-weight:600;font-size:16px;cursor:pointer;transition:.18s transform,.18s box-shadow,.18s background;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--copper-2),var(--copper));color:#1A1408;box-shadow:0 10px 30px rgba(196,165,116,.25)}
.btn-primary:hover{box-shadow:0 14px 40px rgba(196,165,116,.4)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-cyan{background:var(--cyan);color:#04202A}
.btn-lg{padding:17px 28px;font-size:18px;border-radius:14px}
.btn-sm{padding:8px 14px;font-size:14px;border-radius:9px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* chips / tags */
.chip{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;border:1px solid var(--line-2);background:rgba(255,255,255,.03);font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--ink-2)}
.chip .dot{width:8px;height:8px;border-radius:50%;background:var(--copper)}
.tag{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;padding:4px 9px;border-radius:6px;border:1px solid}
.tag.xr{color:var(--xr);border-color:rgba(95,211,243,.35);background:rgba(95,211,243,.08)}
.tag.ct{color:var(--ct);border-color:rgba(242,184,75,.35);background:rgba(242,184,75,.08)}
.tag.mri{color:var(--mri);border-color:rgba(167,139,250,.35);background:rgba(167,139,250,.08)}
.tag.us{color:var(--us);border-color:rgba(76,195,138,.35);background:rgba(76,195,138,.08)}
.tag.all{color:var(--copper);border-color:rgba(196,165,116,.4);background:rgba(196,165,116,.08)}

/* layout */
.section{padding:96px 0}
.section.tight{padding:64px 0}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:1000px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.section{padding:64px 0}}
.card{background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.015));border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative;overflow:hidden}
.card h3{margin-top:6px}
.card p{font-size:16px;color:var(--ink-2)}
.card.hl{border-color:rgba(196,165,116,.45);box-shadow:var(--glow)}
.hr{height:1px;background:var(--line);margin:32px 0}
.center{text-align:center}
.two{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
@media(max-width:900px){.two{grid-template-columns:1fr;gap:28px}}

/* hero */
.hero{padding:80px 0 60px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
@media(max-width:960px){.hero-grid{grid-template-columns:1fr}}
.hero .chip-row{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 28px}
.hero-viewer{position:relative;border-radius:22px;overflow:hidden;background:#000;border:1px solid var(--line-2);box-shadow:var(--shadow);aspect-ratio:4/3}
.hero-viewer img{width:100%;height:100%;object-fit:cover;filter:contrast(1.05)}
.hero-viewer .hud{position:absolute;inset:0;pointer-events:none;font-family:var(--mono);font-size:11px;color:rgba(95,211,243,.9);letter-spacing:.08em}
.hero-viewer .hud span{position:absolute;padding:6px 8px;background:rgba(0,0,0,.35);backdrop-filter:blur(3px);border-radius:6px}
.hero-viewer .hud .tl{top:12px;left:12px}.hero-viewer .hud .tr{top:12px;right:12px;text-align:right}.hero-viewer .hud .bl{bottom:12px;left:12px}.hero-viewer .hud .br{bottom:12px;right:12px;text-align:right}
.hero-viewer .scan{position:absolute;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.7;animation:scan 5s linear infinite}
@keyframes scan{0%{top:0}100%{top:100%}}
.hero-viewer .hs{position:absolute;width:26px;height:26px;border-radius:50%;border:2px solid var(--copper-2);box-shadow:0 0 0 6px rgba(225,196,143,.15);animation:pulse 2.4s ease-out infinite;pointer-events:auto;cursor:pointer}
.hero-viewer .hs i{position:absolute;left:34px;top:-4px;font-style:normal;white-space:nowrap;font-family:var(--mono);font-size:11px;background:rgba(0,0,0,.65);padding:5px 8px;border-radius:6px;color:var(--ink);opacity:0;transition:.2s}
.hero-viewer .hs:hover i{opacity:1}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(225,196,143,.5)}100%{box-shadow:0 0 0 16px rgba(225,196,143,0)}}
.hero-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px}
.hero-strip button{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:6px;cursor:pointer;overflow:hidden;aspect-ratio:4/3;position:relative}
.hero-strip button img{width:100%;height:100%;object-fit:cover;opacity:.7;transition:.2s}
.hero-strip button.on{border-color:var(--copper)}.hero-strip button.on img,.hero-strip button:hover img{opacity:1}
.hero-strip button b{position:absolute;left:8px;bottom:6px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--ink);background:rgba(0,0,0,.6);padding:2px 6px;border-radius:4px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
@media(max-width:800px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02)}
.stat b{display:block;font-family:var(--serif);font-size:40px;line-height:1;color:var(--copper-2)}
.stat span{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* modality cards */
.mod{padding:0;overflow:hidden}
.mod .img{aspect-ratio:16/10;background:#000;position:relative}
.mod .img img{width:100%;height:100%;object-fit:cover}
.mod .img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(7,11,16,.95))}
.mod .body{padding:20px 22px 24px;position:relative;margin-top:-40px}
.mod .body h3{font-size:26px}
.mod ul{margin:12px 0 0;padding-left:18px;color:var(--ink-2);font-size:15px}
.mod ul li{margin:4px 0}
.mod .n{font-family:var(--mono);color:var(--muted);font-size:12px;letter-spacing:.14em}

/* compare slider */
.cmp{position:relative;border-radius:16px;overflow:hidden;background:#000;border:1px solid var(--line-2);user-select:none;touch-action:none;aspect-ratio:4/3;min-height:180px;width:100%}
.cmp img{width:100%;height:100%;object-fit:cover;display:block;position:absolute;inset:0}
.cmp .b{position:absolute;inset:0}
.cmp .a{position:absolute;inset:0;width:50%;overflow:hidden}
.cmp .a img{width:calc(100% * var(--wfix,2));max-width:none}
.cmp .handle{position:absolute;top:0;bottom:0;left:50%;width:2px;background:var(--copper-2);box-shadow:0 0 12px rgba(225,196,143,.8)}
.cmp .handle::after{content:"◂ ▸";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:var(--copper-2);color:#1A1408;display:grid;place-items:center;font-size:13px;font-weight:700}
.cmp .lab{position:absolute;bottom:10px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;padding:5px 9px;border-radius:6px;background:rgba(0,0,0,.6);color:var(--ink)}
.cmp .lab.l{left:10px}.cmp .lab.r{right:10px}

/* viewer (canvas windowing) */
.viewer{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:16px;container-type:inline-size}
@media(max-width:860px){.viewer{grid-template-columns:1fr}}
.viewer.stack,.card .viewer{grid-template-columns:1fr}
.viewer .stage{min-height:220px}
.viewer .stage{background:#000;border-radius:14px;border:1px solid var(--line-2);position:relative;overflow:hidden;aspect-ratio:4/3;display:grid;place-items:center}
.viewer canvas{width:100%;height:100%;object-fit:contain;cursor:crosshair}
.viewer .hud{position:absolute;left:12px;top:12px;font-family:var(--mono);font-size:11px;color:var(--cyan);letter-spacing:.08em;background:rgba(0,0,0,.5);padding:6px 9px;border-radius:6px;pointer-events:none}
.viewer .side{display:flex;flex-direction:column;gap:10px}
.viewer .side label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.viewer input[type=range]{width:100%;accent-color:var(--copper)}
.preset{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}
.preset button{border:1px solid var(--line-2);background:var(--panel);color:var(--ink-2);border-radius:8px;padding:8px;font-family:var(--mono);font-size:12px;cursor:pointer}
.preset button.on,.preset button:hover{border-color:var(--copper);color:var(--ink)}

/* hotspot image */
.hot{position:relative;border-radius:14px;overflow:hidden;background:#000;border:1px solid var(--line-2)}
.hot img{width:100%;display:block}
.hot .pt{position:absolute;width:28px;height:28px;margin:-14px 0 0 -14px;border-radius:50%;border:2px solid var(--copper-2);background:rgba(196,165,116,.18);display:grid;place-items:center;font-family:var(--mono);font-size:11px;color:var(--ink);cursor:pointer;animation:pulse 2.6s ease-out infinite}
.hot .pt.on{background:var(--copper-2);color:#1A1408}
.hot-cap{margin-top:12px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--panel);min-height:64px;font-size:15px}
.hot-cap b{color:var(--copper-2)}

/* curriculum */
.path{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:36px}
@media(max-width:1000px){.path{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.path{grid-template-columns:repeat(2,1fr)}}
.mod-card{padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--panel);display:flex;flex-direction:column;gap:8px;min-height:190px;transition:.18s;position:relative}
.mod-card:hover{border-color:var(--copper);transform:translateY(-2px)}
.mod-card .k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--muted)}
.mod-card h4{font-family:var(--serif);font-size:19px;margin:0;line-height:1.15}
.mod-card .m{font-size:13px;color:var(--muted);margin-top:auto}
.mod-card .bar{height:4px;border-radius:2px;background:var(--line);overflow:hidden}
.mod-card .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--copper),var(--cyan));width:0}

/* accordion */
.acc{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.acc details{border-bottom:1px solid var(--line)}
.acc details:last-child{border-bottom:0}
.acc summary{cursor:pointer;padding:18px 20px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;font-weight:600}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";font-family:var(--mono);color:var(--copper);font-size:20px}
.acc details[open] summary::after{content:"–"}
.acc .in{padding:0 20px 18px;color:var(--ink-2);font-size:16px}
.acc .in ol{padding-left:20px;margin:0}
.acc .in li{margin:5px 0}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch}
@media(max-width:900px){.price-grid{grid-template-columns:1fr}}
.price{display:flex;flex-direction:column;gap:14px}
.price .amt{font-family:var(--serif);font-size:54px;line-height:1;color:var(--ink)}
.price .amt small{font-size:18px;color:var(--muted);font-family:var(--sans)}
.price ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:15px;color:var(--ink-2)}
.price ul li::before{content:"✓";color:var(--ok);margin-right:8px;font-weight:700}
.price ul li.x{color:var(--muted)}.price ul li.x::before{content:"—";color:var(--muted)}
.price .ribbon{position:absolute;top:16px;right:-38px;transform:rotate(38deg);background:var(--copper);color:#1A1408;font-family:var(--mono);font-size:11px;letter-spacing:.14em;padding:5px 46px}
.strike{text-decoration:line-through;color:var(--muted)}

/* compare table */
.vs{width:100%;border-collapse:collapse;font-size:15px}
.vs th,.vs td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.vs th{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.vs td.win{color:var(--ok)}.vs td.lose{color:var(--bad)}
.vs td:first-child{color:var(--ink)}

/* atlas grid */
.atlas-bar{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 26px;align-items:center}
.atlas-bar button{border:1px solid var(--line-2);background:var(--panel);color:var(--ink-2);border-radius:999px;padding:7px 14px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;cursor:pointer}
.atlas-bar button.on{border-color:var(--copper);color:var(--ink);background:rgba(196,165,116,.12)}
.atlas-bar input{margin-left:auto;background:var(--panel);border:1px solid var(--line-2);color:var(--ink);border-radius:10px;padding:9px 12px;min-width:220px}
.atlas{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:1100px){.atlas{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.atlas{grid-template-columns:repeat(2,1fr)}}
.case{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel);cursor:pointer;transition:.18s;display:flex;flex-direction:column}
.case:hover{border-color:var(--copper);transform:translateY(-2px)}
.case .im{aspect-ratio:1/1;background:#000;overflow:hidden}
.case .im img{width:100%;height:100%;object-fit:cover;transition:.4s}
.case:hover .im img{transform:scale(1.04)}
.case .t{padding:12px 14px 14px}
.case .t b{display:block;font-size:15px;line-height:1.25;margin:6px 0 4px}
.case .t span{font-size:12px;color:var(--muted)}

/* lightbox / case modal */
.lb{position:fixed;inset:0;z-index:100;background:rgba(3,6,10,.92);display:none;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(6px)}
.lb.open{display:flex}
.lb .box{width:min(1180px,100%);max-height:calc(100vh - 48px);display:grid;grid-template-columns:1.25fr .75fr;gap:0;background:var(--bg-2);border:1px solid var(--line-2);border-radius:20px;overflow:hidden}
@media(max-width:860px){.lb .box{grid-template-columns:1fr;overflow:auto}}
.lb .im{background:#000;display:grid;place-items:center;position:relative;min-height:320px}
.lb .im img{max-height:calc(100vh - 48px);width:100%;object-fit:contain}
.lb .im .rev{position:absolute;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.35);backdrop-filter:blur(14px);cursor:pointer;font-family:var(--mono);letter-spacing:.14em;font-size:13px;color:var(--ink)}
.lb .im .rev.off{display:none}
.lb .txt{padding:26px;overflow:auto}
.lb .txt h3{font-size:24px}
.lb .txt .step{padding:12px 14px;border-left:2px solid var(--copper);margin:10px 0;background:rgba(255,255,255,.02);font-size:15px}
.lb .txt .step b{color:var(--copper-2);font-family:var(--mono);font-size:11px;letter-spacing:.14em;display:block;margin-bottom:4px}
.lb .x{position:absolute;top:14px;right:14px;z-index:2;background:rgba(0,0,0,.6);border:1px solid var(--line-2);color:var(--ink);width:38px;height:38px;border-radius:50%;cursor:pointer;font-size:18px}
.lb .src{font-size:12px;color:var(--muted);margin-top:16px}

/* quiz */
.quiz{border:1px solid var(--line);border-radius:14px;padding:20px;background:var(--panel)}
.quiz .q{font-weight:600;margin-bottom:12px;font-size:17px}
.quiz .opts{display:grid;gap:8px}
.quiz .opts button{text-align:left;border:1px solid var(--line-2);background:rgba(255,255,255,.02);color:var(--ink);border-radius:10px;padding:11px 14px;cursor:pointer;font-size:15px}
.quiz .opts button:hover{border-color:var(--copper)}
.quiz .opts button.ok{border-color:var(--ok);background:rgba(76,195,138,.12)}
.quiz .opts button.bad{border-color:var(--bad);background:rgba(242,109,109,.12)}
.quiz .why{margin-top:12px;font-size:14px;color:var(--ink-2);padding:10px 12px;border-radius:8px;background:rgba(255,255,255,.03);display:none}
.quiz .why.show{display:block}
.score{font-family:var(--mono);font-size:13px;color:var(--copper-2)}

/* course player */
.player{display:grid;grid-template-columns:300px 1fr;gap:26px;padding:34px 0 80px}
@media(max-width:960px){.player{grid-template-columns:1fr}}
.toc{position:sticky;top:84px;align-self:start;max-height:calc(100vh - 100px);overflow:auto;border:1px solid var(--line);border-radius:14px;background:var(--panel);padding:10px}
.toc .mh{padding:10px 12px 6px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;justify-content:space-between}
.toc a{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border-radius:9px;font-size:14px;color:var(--ink-2);line-height:1.3}
.toc a:hover{background:var(--bg-3)}
.toc a.on{background:rgba(196,165,116,.12);color:var(--ink)}
.toc a .dot{width:8px;height:8px;border-radius:50%;border:1px solid var(--line-2);margin-top:6px;flex:none}
.toc a.done .dot{background:var(--ok);border-color:var(--ok)}
.lesson{border:1px solid var(--line);border-radius:18px;background:var(--bg-2);padding:34px 36px}
@media(max-width:640px){.lesson{padding:22px 18px}}
.lesson h2{font-size:clamp(28px,3.4vw,40px)}
.lesson .goals{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 24px}
.lesson .goals span{font-size:13px;padding:6px 10px;border-radius:8px;background:rgba(95,211,243,.08);border:1px solid rgba(95,211,243,.25);color:var(--cyan)}
.lesson .body{font-size:17px;color:var(--ink-2)}
.lesson .body h3{margin-top:28px;color:var(--ink)}
.lesson .body ul,.lesson .body ol{padding-left:22px}
.lesson .body li{margin:6px 0}
.lesson .body b{color:var(--ink)}
.callout{border:1px solid rgba(196,165,116,.4);background:rgba(196,165,116,.08);border-radius:12px;padding:14px 16px;margin:18px 0;font-size:15px}
.callout.warn{border-color:rgba(242,184,75,.45);background:rgba(242,184,75,.08)}
.callout.bad{border-color:rgba(242,109,109,.45);background:rgba(242,109,109,.08)}
.callout.ok{border-color:rgba(76,195,138,.45);background:rgba(76,195,138,.08)}
figure.vis{margin:22px 0;border:1px solid var(--line-2);border-radius:14px;overflow:hidden;background:#000}
figure.vis img{width:100%;max-height:560px;object-fit:contain;background:#000}
figure.vis figcaption{padding:10px 14px;font-size:13px;color:var(--muted);background:var(--panel)}
.vis-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:18px 0}
@media(max-width:640px){.vis-grid{grid-template-columns:1fr}}
.vis-grid figure{margin:0}
.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:30px;flex-wrap:wrap}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:16px 0}
.kv div{border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--panel)}
.kv b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin-bottom:4px}
.tbl{width:100%;border-collapse:collapse;font-size:15px;margin:14px 0}
.tbl th,.tbl td{border:1px solid var(--line);padding:9px 11px;text-align:left}
.tbl th{background:var(--panel);font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* tools */
.tool{border:1px solid var(--line);border-radius:18px;padding:26px;background:var(--bg-2)}
.tool h3{font-size:24px}
.tool .row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0}
.tool label{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.tool input,.tool select,.tool textarea{width:100%;background:var(--panel);border:1px solid var(--line-2);color:var(--ink);border-radius:10px;padding:10px 12px}
.tool textarea{min-height:120px;font-family:var(--mono);font-size:13px}
.out{margin-top:14px;padding:16px;border-radius:12px;background:var(--panel);border:1px solid var(--line-2);font-size:16px}
.out .big{font-family:var(--serif);font-size:44px;line-height:1;color:var(--copper-2)}
.out.ok{border-color:rgba(76,195,138,.5)}.out.warn{border-color:rgba(242,184,75,.5)}.out.bad{border-color:rgba(242,109,109,.5)}
.hu-scale{position:relative;height:56px;border-radius:10px;background:linear-gradient(90deg,#000 0%,#1a1a1a 33%,#4b4b4b 50%,#8a8a8a 66%,#d8d8d8 82%,#fff 100%);margin:16px 0 30px;border:1px solid var(--line-2)}
.hu-scale .mk{position:absolute;top:100%;transform:translateX(-50%);font-family:var(--mono);font-size:10px;color:var(--muted);margin-top:6px;white-space:nowrap;text-align:center}
.hu-scale .mk:nth-child(even){margin-top:30px}
.hu-scale .mk:nth-child(even)::before{height:32px}
.hu-scale{margin-bottom:58px}
.hu-scale .mk::before{content:"";position:absolute;left:50%;bottom:100%;height:8px;width:1px;background:var(--muted)}
.hu-scale .win{position:absolute;top:-6px;bottom:-6px;border:2px solid var(--copper-2);border-radius:6px;background:rgba(225,196,143,.12);pointer-events:none}

/* library */
.shelf{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
@media(max-width:1100px){.shelf{grid-template-columns:repeat(4,1fr)}}
@media(max-width:700px){.shelf{grid-template-columns:repeat(2,1fr)}}
.book{display:flex;flex-direction:column;gap:8px}
.book .cv{aspect-ratio:3/4;border-radius:8px;overflow:hidden;background:var(--panel);border:1px solid var(--line);box-shadow:0 14px 30px rgba(0,0,0,.4);transition:.2s}
.book:hover .cv{transform:translateY(-4px) rotate(-.5deg);border-color:var(--copper)}
.book .cv img{width:100%;height:100%;object-fit:cover}
.book b{font-size:13px;line-height:1.25;font-weight:600;color:var(--ink-2)}
.book span{font-family:var(--mono);font-size:11px;color:var(--copper)}

/* testimonial-free trust row */
.trust{display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;justify-content:center;padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0 60px;font-size:14px;color:var(--muted)}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:24px}
@media(max-width:800px){footer .cols{grid-template-columns:1fr 1fr}}
footer a{color:var(--ink-2)}
footer a:hover{color:var(--copper-2)}
.disc{font-size:12.5px;color:var(--muted);max-width:90ch;margin-top:20px;line-height:1.5}

/* sticky CTA */
.sticky-cta{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);z-index:60;display:none;gap:12px;align-items:center;background:rgba(14,22,32,.92);border:1px solid var(--line-2);border-radius:999px;padding:8px 8px 8px 18px;backdrop-filter:blur(14px);box-shadow:var(--shadow);font-size:14px;white-space:nowrap}
.sticky-cta.show{display:flex}
@media(max-width:600px){.sticky-cta{width:calc(100% - 24px);justify-content:space-between}}

/* progress ring */
.ring{--p:0;width:54px;height:54px;border-radius:50%;background:conic-gradient(var(--copper) calc(var(--p)*1%),var(--line) 0);display:grid;place-items:center;font-family:var(--mono);font-size:11px}
.ring::after{content:attr(data-p) "%";width:42px;height:42px;border-radius:50%;background:var(--panel);display:grid;place-items:center;color:var(--ink)}

/* reveal */
.rv{opacity:0;transform:translateY(16px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.scan,.pt,.hs{animation:none}}
.marquee{overflow:hidden;white-space:nowrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0;font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.marquee div{display:inline-block;animation:mq 40s linear infinite}
.marquee span{margin:0 28px}
@keyframes mq{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}