*{box-sizing:border-box}
:root{--page:#f3f5f1;--card:#fffdf8;--editor:#faf8f5;--editor-accent:#f4d9de;--primary-text:#4f5552;--secondary-text:#7a817d;--soft-border:#c8cec4;--pink:#ff98b2;--pink-dark:#817878;--yellow:#f3cf42;--lime:#b8ef25;--ink:#35413c;--dark:#404a4d;--radius:22px}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--primary-text);background:var(--page)}
::selection{background:var(--editor-accent);color:#252b29}
button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid rgba(217,86,120,.35);outline-offset:3px}
.wrapper-div{position:relative;width:95%;max-width:1500px;margin:50px auto;border:1px solid var(--soft-border);border-radius:var(--radius);overflow:hidden;background:rgba(255,253,248,.72);box-shadow:0 24px 70px rgba(38,53,47,.06)}
header{height:72px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--soft-border);background:rgba(255,253,248,.9)}
.logo{font-size:22px;font-weight:700;letter-spacing:-1px;color:#7e817f}.logo span{color:var(--pink-dark)}
.playground-label{font-size:12px;font-weight:650;letter-spacing:2.4px;text-transform:uppercase;color:var(--secondary-text)}

/* centered hero */
.quietoode-intro{width:min(1120px,calc(100% - 56px));margin:0 auto;padding:72px 0 20px;text-align:center}
.hero-copy{position:relative;z-index:20;margin:0 auto;max-width:760px}
.hero-eyebrow{margin-bottom:18px;font-size:11px;font-weight:700;letter-spacing:.30em;color:#9a9093}
.hero-copy h1{margin:0;font-family:"Times New Roman",Times,serif;font-size:clamp(68px,7vw,108px);font-weight:400;line-height:.88;letter-spacing:-.055em;color:#343836}
.hero-copy h1 span{color:inherit}.wave-title{white-space:nowrap}.wave-title .wave-letter,.wave-title .wave-space{display:inline-block}.wave-title .wave-space{width:.22em}
.hero-copy p{margin:26px 0 0;color:#5c625f;font-size:clamp(16px,1.35vw,20px);font-weight:300;line-height:1.55}
.hero-copy p a{position:relative;color:#252927;text-decoration:none;padding-bottom:5px;border-bottom:1px solid var(--pink)}
.hero-jump{display:inline-flex;align-items:center;gap:12px;margin-top:22px;padding:10px 17px;border:1px solid rgba(37,43,41,.15);border-radius:999px;color:#343a37;background:rgba(255,255,255,.58);text-decoration:none;font-size:12px;letter-spacing:.04em;box-shadow:0 5px 14px rgba(38,53,47,.04);transition:.2s ease}
.hero-jump:hover{transform:translateY(-2px);background:#fff;box-shadow:0 10px 24px rgba(38,53,47,.08)}
.hero-stack{position:relative;width:min(900px,100%);height:520px;margin:6px auto 0;isolation:isolate}
.hero-stack::before{content:"";position:absolute;inset:55px 40px 30px;background:radial-gradient(circle at 32% 42%,rgba(244,207,66,.42),transparent 35%),radial-gradient(circle at 58% 64%,rgba(184,239,37,.45),transparent 34%),radial-gradient(circle at 79% 44%,rgba(255,152,178,.42),transparent 37%);filter:blur(34px);z-index:-3}
.hero-grid{position:absolute;inset:34px 18px 18px;z-index:-2;opacity:.26;background-image:linear-gradient(rgba(70,76,73,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(70,76,73,.12) 1px,transparent 1px);background-size:24px 24px;mask-image:radial-gradient(ellipse at center,#000 0%,transparent 72%)}
.hero-card{position:absolute;border:1px solid rgba(86,91,88,.18);border-radius:18px;overflow:hidden;background:rgba(255,253,248,.92);box-shadow:0 28px 70px rgba(38,53,47,.14);backdrop-filter:blur(18px) saturate(120%);transition:transform .3s cubic-bezier(.2,.8,.2,1),box-shadow .3s ease}
.hero-mini-bar{min-height:48px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(86,91,88,.13);color:#6f7572;font:600 10px/1 Inter,sans-serif;letter-spacing:.09em}
.hero-code {
    z-index:6;
    width:560px;
    left:50%;
    top:168px;
    transform:translateX(-50%) rotate(.7deg);
    border:4px solid #f1d340;
    box-shadow: 0 38px 75px rgba(183, 255, 90, 0.859), 0 12px 26px rgba(255, 199, 14, 0.699), 0 0 0 8px rgba(239, 206, 89, 0.928), 0 0 42px rgba(255, 169, 49, 0.885), inset 0 1px 0 rgba(255, 255, 255, .98);
}
.hero-code:hover{transform:translateX(-50%) translateY(-6px) rotate(0deg)}
.hero-code pre,.hero-output pre{margin:0;font-family:SFMono-Regular,"Cascadia Code","Roboto Mono",Consolas,monospace}
.hero-code pre{padding:24px 28px 28px;text-align:left;color:#5b625f;font-size:12px;line-height:1.75;background:rgba(252,252,252,.94)}
.hero-mini-run{padding:8px 12px;border-radius:999px;color:#4f4a32;background:linear-gradient(90deg,#f4d64d,#ffabc0)}
.hero-ln{display:inline-block;width:20px;color:#c8cbc9;user-select:none}.hero-pink{color:#d9829a}.hero-blue{color:#3177bd}.hero-gold{color:#b8794d}
.hero-output{z-index:3;width:330px;right:72px;top:80px;text-align:left;background:var(--dark);color:#fff;transform:rotate(1.5deg)}
.hero-output .hero-mini-bar{color:rgba(255,255,255,.72);border-color:rgba(255,255,255,.12)}
.hero-output pre{min-height:150px;padding:22px;color:#f4e91e;font-size:12px;line-height:1.7}.hero-muted{color:rgba(255,255,255,.42)}
.hero-topics{z-index:8;width:190px;left:95px;bottom:34px;padding:18px;display:grid;gap:9px;text-align:left;color:#777d79;font-size:11px;transform:rotate(-5deg)}
.hero-topics strong{margin:2px 0 7px;color:#303532;font:500 17px/1.2 "Times New Roman",serif}.hero-card-kicker{color:#b18b97;font-size:8px;font-weight:700;letter-spacing:.2em}
.hero-topics::before {
    content: "";
    display: block;
    width: 54px;
    height: 6px;
    margin-bottom: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, #e5c56d, #efb1c0);
    opacity: .9;
}
.hero-cloud{position:absolute;z-index:7;left:170px;top:60px;width:190px;filter:drop-shadow(0 18px 22px rgba(213,163,61,.16));transform:rotate(-2deg)}.hero-cloud img{display:block;width:100%;height:auto}
.hero-kawaii{position:absolute;z-index:7;right:82px;bottom:18px;width:150px;filter:drop-shadow(0 18px 24px rgba(38,53,47,.12));transform:rotate(3deg)}.hero-kawaii img{display:block;width:100%;height:auto}
.hero-floating-output{position:absolute;z-index:9;right:26px;bottom:96px;width:275px;height:48px;padding:0 12px 0 16px;display:flex;align-items:center;gap:14px;border-radius:16px;background:#404a4d;color:#fff;box-shadow:0 15px 30px rgba(38,53,47,.16);font-size:10px;font-weight:700;letter-spacing:.15em}.hero-floating-output small{margin-left:auto;font-size:8px;font-weight:400;letter-spacing:.08em;opacity:.65}.hero-floating-output b{width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:#eef0eb;color:#404a4d;font-size:15px}
.hero-branch,.hero-status,.hero-languages{position:absolute;z-index:4;border:1px solid rgba(86,91,88,.16);background:rgba(255,255,255,.8);box-shadow:0 10px 24px rgba(38,53,47,.06);backdrop-filter:blur(10px);color:#4f5552;font-size:10px}
.hero-branch{left:80px;top:132px;padding:9px 13px;border-radius:10px;font-family:monospace}.hero-branch span{margin-left:18px}.hero-status{right:165px;top:152px;padding:8px 12px;border-radius:9px}.hero-status span{color:#70c963}.hero-languages{right:18px;bottom:46px;padding:12px 13px;border-radius:12px;display:grid;gap:7px;text-align:left}.hero-languages span:nth-child(1){color:#e49a22}.hero-languages span:nth-child(2){color:#7567cf}.hero-languages span:nth-child(3){color:#e5b91f}
.hero-path{position:absolute;z-index:2;pointer-events:none}.hero-path-left{left:130px;top:163px;width:150px;height:110px;border-left:1px solid #efcf32;border-bottom:1px solid #efcf32;border-radius:0 0 0 20px}.hero-path-left::before,.hero-path-left::after,.hero-path-right::before,.hero-path-right::after{content:"";position:absolute;width:7px;height:7px;border:2px solid var(--pink);border-radius:50%;background:#fffdf8}.hero-path-left::before{left:-5px;top:20px}.hero-path-left::after{right:-5px;bottom:-5px}.hero-path-right{right:78px;top:156px;width:160px;height:118px;border-top:1px solid var(--pink);border-right:1px solid var(--pink);border-radius:0 20px 0 0}.hero-path-right::before{left:-5px;top:-5px}.hero-path-right::after{right:-5px;bottom:-5px}

.category-switcher{width:min(450px,calc(100% - 48px));margin:70px auto 38px;display:grid;grid-template-columns:repeat(3,1fr);padding:5px;background:rgba(225,226,222,.52);border:1px solid rgba(200,206,196,.38);border-radius:var(--radius)}
.category-tab{min-height:39px;padding:0 20px;border:1px solid transparent;border-radius:var(--radius);background:transparent;color:#62645f;font:500 16px/1 inherit;cursor:pointer}.category-tab:hover:not(.active){background:rgba(255,255,255,.32)}.category-tab.active{background:#fff;color:#181a18;border-color:rgba(38,53,47,.12);box-shadow:0 3px 10px rgba(38,53,47,.07)}

.app{min-height:calc(100vh - 72px);display:grid;grid-template-columns:330px 1fr;padding:22px}.sidebar{padding:24px 16px}.sidebar h2{margin:0 8px 24px;font-size:19px;line-height:1.3;letter-spacing:-.35px;color:#828282}.sidebar h2 span{color:var(--pink-dark)}
.exercise{position:relative;width:100%;display:flex;align-items:center;gap:20px;margin-bottom:5px;padding:14px 13px;border:0;border-radius:var(--radius);background:transparent;color:var(--ink);text-align:left;cursor:pointer;transition:.2s ease}.exercise:hover{transform:translateX(5px);background:rgba(224,222,216,.24)}.exercise.active{transform:translateX(5px);border:1px solid rgba(36,35,32,.18);background:rgba(224,222,216,.24)}.exercise.active::after{content:"›";position:absolute;right:13px;top:50%;transform:translateY(-50%);font-size:22px}.exercise-number{color:#6e6e6e;font-size:12px}.exercise-title{display:block;font-size:16px;line-height:1.25;text-transform:capitalize}.little-friend{margin-top:30px;text-align:center;font-size:28px;color:#77736d}.little-friend-caption{display:block;margin-top:7px;font-size:10px;opacity:.65}
.workspace{display:flex;justify-content:center}.panel{position:relative;overflow:hidden}.code-panel{display:flex;flex-direction:column;width:100%;max-width:900px;padding:20px;border-radius:var(--radius);background:#fcfcfc}.panel-header{min-height:58px;padding:0 20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #655e60}.file-info{display:flex;align-items:center;gap:12px}.filename{font-family:SFMono-Regular,Consolas,monospace;color:#828282;letter-spacing:-.2px}.code-wrapper{flex:1;min-height:100vh;padding:30px;display:flex;overflow:auto}.line-numbers{width:10px;padding-right:40px;margin-right:20px;border-right:1px solid #e9e9e9;color:#d2d2d2;font:12px/1.85 SFMono-Regular,Consolas,monospace;text-align:center;white-space:pre}pre{margin:0}code{color:#404a4d;font:12px/1.85 SFMono-Regular,"Cascadia Code","Roboto Mono",Consolas,monospace}
.run-button{padding:10px 15px;border:0;border-radius:var(--radius);background:var(--pink);color:#fff;letter-spacing:2px;font-size:10px;font-weight:600;text-transform:uppercase;text-decoration:none;cursor:pointer}.run-button:hover{background:#f2b5c5;transform:translateY(-1px);box-shadow:0 7px 16px rgba(110,109,110,.24)}
.mobile-exercise-label,.mobile-exercise-select{display:none}.output-actions{display:flex;align-items:center;gap:10px}.output-toggle{width:27px;height:27px;padding:0;border:1px solid rgba(38,53,47,.22);border-radius:var(--radius);background:rgba(255,253,248,.72);color:var(--primary-text);font-size:18px;cursor:pointer}.floating-output.minimized{min-height:0}.floating-output.minimized .output-content{display:none}
.floating-output{position:fixed;right:35px;top:883px;width:340px;min-height:150px;z-index:1000;overflow:hidden;border:1px solid rgba(255,255,255,.8);border-radius:var(--radius);background:var(--dark);box-shadow:0 15px 40px rgba(63,72,68,.16)}.floating-output .output-title{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;color:#fff;background:var(--dark);cursor:grab;user-select:none;font-size:11px;font-weight:700;letter-spacing:2px}.floating-output .output-content{min-height:100px;padding:18px 20px;background:#f8f8f3}.floating-output .output-content small{display:block;margin-bottom:10px;opacity:.55}.drag-hint{font-size:9px;letter-spacing:1px;opacity:.55;font-weight:400}#output{white-space:pre-wrap;word-break:break-word;color:var(--ink);font:13px/1.6 SFMono-Regular,Consolas,monospace}.empty-output{font-size:13px;color:#77736d;opacity:.5}.error{color:var(--pink-dark);font-weight:700}
.token.comment,.token.prolog,.token.doctype,.token.cdata{color:#aaa8ad;font-style:italic}.token.keyword{color:#d9829a}.token.function{color:#5368b5}.token.string,.token.template-string{color:#3177bd}.token.number,.token.boolean{color:#b8794d}.token.operator{color:#77736d}.token.punctuation{color:#68716d}.token.property{color:#72886a}.token.class-name,.token.constant{color:#8a6aa3}.token.parameter{color:#59645f}

.flower-sticker{position:absolute;z-index:10;pointer-events:none;user-select:none;object-fit:contain}.daisy-one{width:220px;left:-22px;bottom:-18px;transform:rotate(-8deg)}
.site-footer{width:95%;max-width:1500px;margin:-12px auto 50px;color:var(--primary-text);font-size:13px}.footer-inner{display:grid;grid-template-columns:1.2fr .9fr 1.25fr .72fr;background:rgba(255,253,248,.72);border:1px solid var(--soft-border);border-radius:var(--radius);box-shadow:0 18px 50px rgba(38,53,47,.05);overflow:hidden}.footer-inner>*{padding:34px 36px}.footer-inner>*+*{border-left:1px solid rgba(200,206,196,.85)}.footer-logo{font-size:22px;font-weight:700;letter-spacing:-1px;margin-bottom:5px}.footer-logo span{color:var(--pink-dark)}.footer-tagline{color:var(--secondary-text);margin:0 0 25px}.footer-brand p:last-child,.footer-privacy p,.footer-closing p{line-height:1.45}.footer-links{display:flex;flex-direction:column;gap:15px;justify-content:center}.footer-links a{color:var(--primary-text);text-decoration:none}.footer-links a:hover{text-decoration:underline;text-decoration-color:#f4ba50;text-underline-offset:5px}.cookie-preferences{width:fit-content;padding:6px 10px;border:0;border-radius:var(--radius);color:#6a6d62;cursor:pointer}.footer-closing{display:flex;flex-direction:column;justify-content:center}.footer-leaf{font-size:22px}.footer-rule{display:block;width:34px;border-top:2px solid #f4ba50;margin:13px 0 7px}.footer-copyright{color:var(--secondary-text)}

@media(max-width:900px){.hero-stack{transform:scale(.86);transform-origin:top center;margin-bottom:-65px}.app{grid-template-columns:180px 1fr}.workspace{flex-direction:column;gap:20px}.footer-inner{grid-template-columns:1fr 1fr}.footer-inner>*{border-left:0;border-top:1px solid rgba(200,206,196,.85)}.footer-inner>:nth-child(-n+2){border-top:0}.footer-inner>:nth-child(even){border-left:1px solid rgba(200,206,196,.85)}}
@media(max-width:650px){.wrapper-div{width:95%;margin:10px auto}.wrapper-div header{padding:0 18px}.playground-label{font-size:10px}.quietoode-intro{width:100%;padding:48px 16px 0}.hero-eyebrow{font-size:9px}.hero-copy h1{font-size:clamp(48px,15vw,68px)}.hero-copy p{font-size:15px}.hero-stack{height:400px;width:700px;left:50%;margin-left:-350px;transform:scale(.58);margin-bottom:-150px}.category-switcher{width:calc(100% - 28px);margin:300px auto 18px}.category-tab{min-height:44px;padding:0 8px;font-size:13px}.app{grid-template-columns:1fr;padding:14px}#exerciseList{display:none}.mobile-exercise-label{display:block;margin:0 8px 7px;font-size:10px}.mobile-exercise-select{display:block;width:100%;padding:12px 38px 12px 12px;border:1px solid var(--soft-border);border-radius:var(--radius);color:var(--primary-text);font:inherit;font-weight:700}.little-friend,.flower-sticker{display:none}.code-wrapper{min-height:400px;padding:18px}.floating-output{position:static;width:100%;min-height:150px;margin-top:14px;border-radius:var(--radius);transform:none!important}.drag-hint{display:none}.site-footer{width:95%;margin:22px auto}.footer-inner{grid-template-columns:1fr}.footer-inner>*{padding:26px 24px;border-left:0!important;border-top:1px solid rgba(200,206,196,.85)!important}.footer-inner>:first-child{border-top:0!important}}