/* Audi S3 8V Limousine 2016 guide. Dark automotive theme, mobile first. */
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url(/assets/fonts/inter-latin-wght-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url(/assets/fonts/inter-latin-ext-wght-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:600;font-display:swap;src:url(/assets/fonts/barlow-condensed-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/barlow-condensed-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-style:normal;font-weight:700;font-display:swap;src:url(/assets/fonts/barlow-condensed-latin-ext-700-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+1E00-1E9F}

:root{
  --bg:#0a0b0d;--bg2:#101216;--card:#15181d;--card2:#1b1f26;--line:#262b33;--line2:#343a44;
  --text:#eceef2;--text2:#c3c8d1;--muted:#8d93a0;
  --red:#e4002b;--red2:#ff3355;--amber:#f2b530;--green:#3ecf8e;--blue:#5fb3ff;
  --radius:16px;--radius-s:10px;--gutter:16px;--max:1140px;
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:"Barlow Condensed","Inter",system-ui,sans-serif;
  --shadow:0 20px 60px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;overflow-x:hidden}
img,svg,canvas,video{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:var(--display);line-height:1.05;margin:0;letter-spacing:.01em}
h1{font-size:clamp(2.6rem,8vw,5.2rem);font-weight:700;text-transform:uppercase}
h2{font-size:clamp(2rem,5vw,3.2rem);font-weight:700;text-transform:uppercase}
h3{font-size:clamp(1.35rem,3vw,1.7rem);font-weight:600}
h4{font-size:1.15rem;font-weight:600;font-family:var(--font);letter-spacing:0}
p{margin:0 0 1em}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.eyebrow{font-family:var(--display);text-transform:uppercase;letter-spacing:.18em;font-size:.85rem;color:var(--red2);font-weight:600;display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red)}
.lede{font-size:1.1rem;color:var(--text2);max-width:62ch}
kbd{font-family:var(--font);font-size:.85em;background:var(--card2);border:1px solid var(--line2);border-bottom-width:2px;border-radius:6px;padding:1px 7px;white-space:nowrap}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:var(--card2);border:1px solid var(--line);border-radius:6px;padding:1px 6px}
strong{color:#fff}
.fr-note{color:var(--muted);font-size:.9rem}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}

/* Top bar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(10,11,13,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;gap:14px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:1.25rem;text-transform:uppercase;letter-spacing:.06em;color:#fff;white-space:nowrap}
.brand .s3{background:var(--red);color:#fff;padding:1px 8px;border-radius:5px;font-size:1.05rem}
.brand small{font-family:var(--font);font-weight:500;text-transform:none;letter-spacing:0;color:var(--muted);font-size:.8rem}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;margin-left:auto;-webkit-overflow-scrolling:touch}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--text2);padding:7px 11px;border-radius:999px;font-size:.88rem;white-space:nowrap;font-weight:500}
.nav a:hover{background:var(--card2);text-decoration:none;color:#fff}
.nav a.active{background:#fff;color:#000}
.progress{position:absolute;left:0;bottom:-1px;height:2px;background:var(--red);width:0;transition:width .15s linear}

/* Hero */
.hero{padding:40px 0 20px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto -10%;height:70%;background:radial-gradient(60% 60% at 30% 20%,rgba(228,0,43,.22),transparent 60%),radial-gradient(40% 50% at 80% 10%,rgba(95,179,255,.12),transparent 60%);pointer-events:none}
.hero .wrap{position:relative;display:grid;gap:28px}
.hero h1 span{color:var(--red2)}
.hero .tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 8px}
.tag{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:.85rem;color:var(--text2)}
.tag b{color:#fff;font-weight:600}
.statrow{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:22px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-s);padding:12px 14px}
.stat .v{font-family:var(--display);font-size:2rem;font-weight:700;line-height:1;color:#fff}
.stat .v small{font-size:1rem;color:var(--muted);font-weight:600;margin-left:3px}
.stat .l{font-size:.8rem;color:var(--muted);margin-top:4px}
@media(min-width:900px){.hero{padding:70px 0 40px}.hero .wrap{grid-template-columns:1.05fr 1fr;align-items:center}.statrow{grid-template-columns:repeat(4,1fr)}}

/* 360 viewer */
.turn{position:relative;background:#0d0f12;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;aspect-ratio:6/5;box-shadow:var(--shadow);user-select:none;-webkit-user-select:none;touch-action:pan-y}
.turn img{width:100%;height:100%;object-fit:cover;pointer-events:none;-webkit-user-drag:none}
.turn .hint{position:absolute;left:50%;bottom:54px;transform:translateX(-50%);background:rgba(0,0,0,.6);backdrop-filter:blur(6px);padding:6px 12px;border-radius:999px;font-size:.8rem;color:#fff;display:flex;align-items:center;gap:8px;pointer-events:none;transition:opacity .4s}
.turn.touched .hint{opacity:0}
.turn .bar{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;display:flex;align-items:center;gap:12px;background:linear-gradient(transparent,rgba(0,0,0,.75))}
.turn input[type=range]{flex:1;accent-color:var(--red);height:4px}
.turn .ctl{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:999px;width:34px;height:34px;display:grid;place-items:center;color:#fff;flex:none}
.turn .ctl:hover{background:rgba(255,255,255,.25)}
.turn .load{position:absolute;top:0;left:0;height:3px;background:var(--red);width:0;transition:width .2s}
.turn .badge{position:absolute;top:12px;left:12px;background:rgba(0,0,0,.6);border:1px solid rgba(255,255,255,.15);color:#fff;font-size:.75rem;padding:5px 10px;border-radius:999px;backdrop-filter:blur(6px)}
.turn .badge b{color:var(--red2)}

/* Sections */
.section{padding:56px 0;border-top:1px solid var(--line)}
.section-head{margin-bottom:28px;display:grid;gap:10px}
.section-head h2{margin-top:4px}
.grid{display:grid;gap:14px}
.grid.c2{grid-template-columns:1fr}
.grid.c3{grid-template-columns:1fr}
@media(min-width:720px){.grid.c2{grid-template-columns:1fr 1fr}.grid.c3{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 14px}
.card h3,.card h4{margin-bottom:8px}
.card .n{font-family:var(--display);font-size:2.4rem;font-weight:700;color:var(--red2);line-height:1}
.card p:last-child{margin-bottom:0}
.card.accent{border-color:rgba(228,0,43,.45);background:linear-gradient(180deg,rgba(228,0,43,.09),transparent 50%),var(--card)}
.card.ok{border-color:rgba(62,207,142,.4)}
.card.warn{border-color:rgba(242,181,48,.45)}
.callout{border-left:4px solid var(--blue);background:var(--card);padding:14px 16px;border-radius:0 var(--radius-s) var(--radius-s) 0;margin:16px 0}
.callout.warn{border-color:var(--amber)}
.callout.danger{border-color:var(--red)}
.callout.ok{border-color:var(--green)}
.callout p:last-child{margin:0}
.callout b.t{display:block;margin-bottom:4px;color:#fff}

/* Steps */
.steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;gap:10px}
.steps li{position:relative;padding-left:48px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-s);padding-top:12px;padding-bottom:12px;padding-right:14px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:12px;top:11px;width:26px;height:26px;border-radius:50%;background:var(--red);color:#fff;font-family:var(--display);font-weight:700;display:grid;place-items:center;font-size:1rem}
.steps li b{color:#fff}

/* Tables */
.tbl{width:100%;border-collapse:collapse;font-size:.95rem;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl th,.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{font-weight:600;color:#fff;background:var(--card2);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{color:var(--text2);font-weight:500;width:38%}
.tblwrap{overflow-x:auto;border-radius:var(--radius)}
.tbl.compact td:first-child{width:auto}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.78rem;font-weight:600;border:1px solid var(--line2);color:var(--text2)}
.pill.red{background:rgba(228,0,43,.15);border-color:rgba(228,0,43,.5);color:#ff8fa3}
.pill.green{background:rgba(62,207,142,.12);border-color:rgba(62,207,142,.45);color:#7fe7b6}
.pill.amber{background:rgba(242,181,48,.12);border-color:rgba(242,181,48,.45);color:#ffd27a}
.pill.blue{background:rgba(95,179,255,.12);border-color:rgba(95,179,255,.45);color:#9fd0ff}

/* 3D stage */
.stage{position:relative;background:radial-gradient(80% 70% at 50% 40%,#1c2027,#0b0c0e 75%);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.stage .canvas{position:relative;height:min(68vh,560px);min-height:360px;touch-action:none}
.stage canvas{outline:none;display:block}
.stage .labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.stage .toolbar{display:flex;flex-wrap:wrap;gap:8px;padding:10px 12px;border-top:1px solid var(--line);background:rgba(13,15,18,.9)}
.seg{display:inline-flex;background:var(--card2);border:1px solid var(--line2);border-radius:999px;padding:3px}
.seg button{background:transparent;border:0;padding:7px 14px;border-radius:999px;color:var(--text2);font-size:.88rem;font-weight:500}
.seg button.on{background:#fff;color:#000}
.btn{background:var(--card2);border:1px solid var(--line2);border-radius:999px;padding:8px 14px;font-size:.88rem;font-weight:500;color:var(--text2);display:inline-flex;align-items:center;gap:8px}
.btn:hover{color:#fff;border-color:#4a515e}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:#ff1a46}
.pin3d{pointer-events:auto;width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.9);color:#000;font-family:var(--display);font-weight:700;font-size:1rem;display:grid;place-items:center;border:2px solid #000;box-shadow:0 0 0 4px rgba(255,255,255,.18),0 4px 14px rgba(0,0,0,.5);cursor:pointer;transition:transform .15s,background .15s;transform:translate(-50%,-50%)}
.pin3d:hover,.pin3d.on{background:var(--red);color:#fff;border-color:#fff;transform:translate(-50%,-50%) scale(1.15)}
.pin3d.xr{width:auto;height:auto;border-radius:8px;padding:4px 9px;font-family:var(--font);font-size:.78rem;font-weight:600;background:rgba(10,11,13,.85);color:#fff;border:1px solid rgba(255,255,255,.35);box-shadow:none;white-space:nowrap}
.pin3d.xr:hover,.pin3d.xr.on{background:var(--red);border-color:#fff}
.stage .hudtip{position:absolute;left:12px;top:12px;background:rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.15);border-radius:999px;padding:5px 11px;font-size:.78rem;color:#ddd;backdrop-filter:blur(6px);pointer-events:none}
.hotlist{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.hotlist button{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:7px 12px 7px 8px;font-size:.85rem;color:var(--text2);display:inline-flex;align-items:center;gap:8px}
.hotlist button i{font-style:normal;width:22px;height:22px;border-radius:50%;background:#fff;color:#000;font-family:var(--display);font-weight:700;display:grid;place-items:center;font-size:.85rem}
.hotlist button:hover,.hotlist button.on{border-color:var(--red);color:#fff}
.hotlist button.on i{background:var(--red);color:#fff}

/* SVG diagrams with pins */
.diagram{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.diagram svg{width:100%;height:auto;display:block}
.pin{position:absolute;transform:translate(-50%,-50%);width:28px;height:28px;border-radius:50%;background:#fff;color:#000;border:2px solid #000;font-family:var(--display);font-weight:700;font-size:.95rem;display:grid;place-items:center;box-shadow:0 0 0 4px rgba(255,255,255,.18),0 4px 14px rgba(0,0,0,.5);cursor:pointer;padding:0;transition:transform .15s,background .15s;z-index:2}
.pin:hover,.pin.on{background:var(--red);color:#fff;border-color:#fff;transform:translate(-50%,-50%) scale(1.15)}
.pin::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:2px solid rgba(255,255,255,.35);animation:pulse 2.2s infinite}
@keyframes pulse{0%{transform:scale(.8);opacity:1}100%{transform:scale(1.6);opacity:0}}
.diagram .legend{position:absolute;left:10px;bottom:10px;background:rgba(0,0,0,.6);border:1px solid rgba(255,255,255,.15);border-radius:8px;padding:5px 10px;font-size:.75rem;color:#ddd;backdrop-filter:blur(6px);pointer-events:none}

/* Drawer */
.drawer-bg{position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;pointer-events:none;transition:opacity .25s;z-index:90}
.drawer{position:fixed;z-index:95;background:var(--bg2);border:1px solid var(--line2);box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .32s cubic-bezier(.2,.8,.2,1);
  left:0;right:0;bottom:0;max-height:86vh;border-radius:20px 20px 0 0;transform:translateY(105%)}
.drawer.open{transform:translateY(0)}
.drawer-bg.open{opacity:1;pointer-events:auto}
@media(min-width:900px){.drawer{left:auto;top:0;bottom:0;right:0;width:460px;max-height:none;border-radius:0;transform:translateX(105%)}.drawer.open{transform:translateX(0)}}
.drawer header{display:flex;align-items:flex-start;gap:12px;padding:18px 18px 10px;border-bottom:1px solid var(--line)}
.drawer header .k{font-family:var(--display);font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;color:var(--red2);font-weight:600}
.drawer header h3{margin-top:4px}
.drawer .x{margin-left:auto;background:var(--card2);border:1px solid var(--line2);width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;flex:none}
.drawer .body{padding:14px 18px 28px;overflow:auto;font-size:.97rem}
.drawer .body p{margin:0 0 .9em}
.drawer .body ul{padding-left:20px;margin:0 0 .9em}
.drawer .body li{margin-bottom:6px}
.drawer .body .lbl{display:inline-block;margin:0 0 10px;font-size:.78rem;padding:3px 9px;border-radius:999px;border:1px solid var(--line2);color:var(--text2)}
.drawer .body .term{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin:10px 0;font-size:.9rem}
.drawer .body .term b{color:var(--amber)}
.drawer nav{display:flex;gap:8px;padding:10px 18px;border-top:1px solid var(--line);margin-top:auto}
.drawer nav button{flex:1}

/* Identity timeline */
.timeline{display:grid;gap:0;position:relative;padding-left:22px;border-left:2px solid var(--line2)}
.timeline li{list-style:none;position:relative;padding:0 0 18px 14px}
.timeline li::before{content:"";position:absolute;left:-29px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--muted);border:2px solid var(--bg)}
.timeline li.me::before{background:var(--red);box-shadow:0 0 0 4px rgba(228,0,43,.25)}
.timeline b{color:#fff}

/* Compare */
.compare{display:grid;gap:12px}
@media(min-width:720px){.compare{grid-template-columns:1fr 1fr}}
.compare .card h3{display:flex;align-items:center;gap:10px}
.compare ul{padding-left:18px;margin:0}
.compare li{margin-bottom:6px}

/* Flow diagram animation */
.flow svg .gas{stroke-dasharray:6 8;animation:dash 1.2s linear infinite}
@keyframes dash{to{stroke-dashoffset:-28}}
.flow svg .hot{stroke:#ff6a3d}
.flow svg .cold{stroke:#5fb3ff}
.flow svg text{font-family:var(--font);font-size:12px;fill:#e9eaee}
.flow svg .lbl{font-weight:600;fill:#fff}

/* Warning lights */
.lights{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.light{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px;text-align:center}
.light .ico{width:46px;height:46px;margin:0 auto 8px;display:grid;place-items:center;border-radius:12px;background:#0d0f12;border:1px solid var(--line)}
.light .ico svg{width:30px;height:30px}
.light b{display:block;font-size:.9rem;color:#fff}
.light span{font-size:.78rem;color:var(--muted)}
.light.red .ico{color:#ff4d6a}.light.amber .ico{color:#ffc74d}.light.green .ico{color:#5ee3a4}.light.blue .ico{color:#7fc4ff}

/* Quiz */
.quiz{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.quiz .q{font-size:1.15rem;font-weight:600;color:#fff;margin:6px 0 14px}
.quiz .opts{display:grid;gap:8px}
.quiz .opts button{text-align:left;background:var(--card2);border:1px solid var(--line2);border-radius:10px;padding:11px 14px;color:var(--text)}
.quiz .opts button:hover{border-color:#5a6270}
.quiz .opts button.good{border-color:var(--green);background:rgba(62,207,142,.12)}
.quiz .opts button.bad{border-color:var(--red);background:rgba(228,0,43,.12)}
.quiz .expl{margin-top:12px;padding:12px 14px;border-radius:10px;background:var(--bg2);border:1px solid var(--line);font-size:.93rem;display:none}
.quiz .expl.show{display:block}
.quiz .foot{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.quiz .score{font-family:var(--display);font-size:1.4rem;font-weight:700;color:#fff}
.quiz .pbar{height:6px;background:var(--line);border-radius:999px;overflow:hidden;flex:1;min-width:120px}
.quiz .pbar i{display:block;height:100%;background:var(--red);width:0;transition:width .3s}

/* Lexique */
.lexsearch{width:100%;background:var(--card);border:1px solid var(--line2);border-radius:12px;padding:12px 14px;color:#fff;font-size:1rem;margin-bottom:14px;outline:none}
.lexsearch:focus{border-color:var(--red)}
.lex{display:grid;gap:10px}
@media(min-width:720px){.lex{grid-template-columns:1fr 1fr}}
.lex .item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.lex .item b{color:#fff;display:block;font-size:1rem}
.lex .item i{color:var(--amber);font-style:normal;font-size:.85rem}
.lex .item p{margin:4px 0 0;font-size:.92rem;color:var(--text2)}

/* Checklist */
.check{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.check li{display:flex;gap:12px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:11px 12px;cursor:pointer}
.check li input{margin-top:5px;accent-color:var(--red);width:18px;height:18px;flex:none}
.check li.done{opacity:.55;text-decoration:line-through}
.check li b{color:#fff}

/* Accordion */
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 16px;margin-bottom:8px}
details summary{cursor:pointer;padding:14px 0;font-weight:600;color:#fff;list-style:none;display:flex;align-items:center;gap:10px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";margin-left:auto;font-family:var(--display);font-size:1.4rem;color:var(--muted)}
details[open] summary::after{content:"\2212"}
details .dbody{padding:0 0 16px;color:var(--text2)}
details .dbody p:last-child{margin-bottom:0}

/* Footer */
footer{padding:40px 0 60px;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem}

/* Photos */
.photos{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px}
.photos img{border-radius:10px;border:1px solid var(--line);aspect-ratio:1;object-fit:cover}

/* Back to top */
.totop{position:fixed;right:14px;bottom:14px;z-index:40;width:42px;height:42px;border-radius:50%;background:var(--card2);border:1px solid var(--line2);color:#fff;display:grid;place-items:center;opacity:0;pointer-events:none;transition:opacity .25s}
.totop.show{opacity:1;pointer-events:auto}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}