/* ===========================================================
   Vigyan Aao Karke Sikhe — Apple-inspired design system
   =========================================================== */
:root{
  --bg:#ffffff;
  --bg-soft:#f4f2ff;
  --bg-elev:#ffffff;
  --text:#241f3d;
  --text-soft:#6b6786;
  --line:#e9e5fb;
  --brand:#6a5cff;
  --brand-2:#ff5da2;
  --accent:#12bfa8;
  --sun:#ffb703;
  --shadow:0 10px 40px rgba(106,92,255,.10);
  --shadow-lg:0 22px 70px rgba(106,92,255,.18);
  --radius:22px;
  --radius-sm:16px;
  --nav-h:54px;
  --maxw:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Noto Sans",sans-serif;
  --font-head:"Fredoka","Baloo 2",var(--font);
  --ease:cubic-bezier(.22,.61,.36,1);
}
:root:not([data-theme="light"]){
}
[data-theme="dark"]{
  --bg:#0b0a1a;
  --bg-soft:#12102a;
  --bg-elev:#171533;
  --text:#f2f0ff;
  --text-soft:#a7a2c8;
  --line:#2a2750;
  --brand:#8b7dff;
  --brand-2:#ff7fb6;
  --accent:#2fd6c4;
  --sun:#ffca3a;
  --shadow:0 10px 40px rgba(0,0,0,.5);
  --shadow-lg:0 22px 70px rgba(0,0,0,.6);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0b0a1a;--bg-soft:#12102a;--bg-elev:#171533;--text:#f2f0ff;--text-soft:#a7a2c8;
    --line:#2a2750;--brand:#8b7dff;--brand-2:#ff7fb6;--accent:#2fd6c4;--sun:#ffca3a;
    --shadow:0 10px 40px rgba(0,0,0,.5);--shadow-lg:0 22px 70px rgba(0,0,0,.6);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(1100px 700px at 10% 0%, color-mix(in srgb,var(--brand) 8%,transparent), transparent 60%),
    radial-gradient(1000px 700px at 100% 30%, color-mix(in srgb,var(--brand-2) 7%,transparent), transparent 60%),
    radial-gradient(900px 700px at 20% 100%, color-mix(in srgb,var(--accent) 6%,transparent), transparent 60%);
  background-attachment:fixed;
  line-height:1.5;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  transition:color .5s var(--ease);
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.center{text-align:center}
section{padding:96px 0}
h1,h2,h3{font-family:var(--font-head);letter-spacing:-.01em;line-height:1.08;font-weight:600;margin:0 0 .4em}
.eyebrow{color:var(--brand);font-weight:600;font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.lead{font-size:1.35rem;color:var(--text-soft);max-width:640px;margin:0 auto}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:100;height:var(--nav-h);display:flex;align-items:center;
  background:color-mix(in srgb,var(--bg) 72%,transparent);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--line);transition:background .4s var(--ease),border-color .4s var(--ease);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;color:var(--text);font-size:.98rem}
.brand:hover{text-decoration:none}
.brand .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#fff;font-size:14px}
.menu{display:flex;align-items:center;gap:30px;list-style:none;margin:0;padding:0}
.menu a{color:var(--text);font-size:.86rem;opacity:.85;transition:opacity .2s}
.menu a:hover{opacity:1;text-decoration:none}
.nav-tools{display:flex;align-items:center;gap:14px}
.theme-btn{background:none;border:0;cursor:pointer;color:var(--text);width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;transition:background .25s;font-size:16px}
.theme-btn:hover{background:var(--bg-soft)}
.burger{display:none;background:none;border:0;color:var(--text);cursor:pointer;font-size:22px}

/* ---------- Hero ---------- */
.hero{position:relative;text-align:center;padding:120px 0 90px;overflow:hidden}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);background:linear-gradient(120deg,var(--text),var(--text) 40%,var(--brand));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{margin-top:20px;font-size:clamp(1.05rem,2.4vw,1.5rem)}
.hero-cta{margin-top:34px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.orb{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;z-index:-1;animation:float 14s ease-in-out infinite}
.orb.a{width:380px;height:380px;background:var(--brand);top:-120px;left:-80px}
.orb.b{width:320px;height:320px;background:var(--brand-2);top:40px;right:-100px;animation-delay:-5s}
.orb.c{width:260px;height:260px;background:var(--accent);bottom:-120px;left:40%;animation-delay:-9s}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(30px) scale(1.08)}}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border:0;cursor:pointer;font-family:inherit;
  font-size:.98rem;font-weight:500;padding:12px 24px;border-radius:980px;transition:transform .25s var(--ease),background .25s,box-shadow .25s}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{box-shadow:0 10px 26px color-mix(in srgb,var(--brand) 45%,transparent)}
.btn-ghost{background:var(--bg-soft);color:var(--text)}
.btn-ghost:hover{background:color-mix(in srgb,var(--text) 10%,var(--bg-soft))}
.btn-link{background:none;color:var(--brand);padding:0}
.btn-link:hover{text-decoration:underline}

/* ---------- Stats / counter ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat{background:var(--bg-soft);border-radius:var(--radius);padding:30px 20px;text-align:center;
  border:1px solid var(--line)}
.stat .num{font-size:2.4rem;font-weight:700;letter-spacing:-.03em;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:var(--text-soft);font-size:.9rem;margin-top:4px}

/* ---------- Single visitor counter ---------- */
.visitor-counter{display:inline-block;padding:6px 10px}
.visitor-counter .num{font-size:clamp(3rem,8vw,5rem);font-weight:800;letter-spacing:-.03em;line-height:1;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.visitor-counter .lbl{color:var(--text-soft);font-size:1rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;margin-top:12px}

/* ---------- Feature cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);padding:30px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card .ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:24px;margin-bottom:18px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 18%,transparent),color-mix(in srgb,var(--brand-2) 18%,transparent))}
.card h3{font-size:1.25rem}
.card p{color:var(--text-soft);margin:0}

/* ---------- Blog cards ---------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.post-card{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.post-card a{color:inherit}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.06)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.chip{align-self:flex-start;font-size:.7rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  color:var(--brand);background:color-mix(in srgb,var(--brand) 12%,transparent);padding:5px 11px;border-radius:980px}
.post-body h3{font-size:1.15rem;margin:0;line-height:1.25}
.post-body h3 a:hover{color:var(--brand);text-decoration:none}
.post-meta{color:var(--text-soft);font-size:.82rem;margin-top:auto}
.post-excerpt{color:var(--text-soft);font-size:.92rem;margin:0}

/* ---------- Section header ---------- */
.sec-head{max-width:660px;margin:0 auto 54px;text-align:center}
.sec-head h2{font-size:clamp(2rem,4vw,3rem)}
.sec-head p{color:var(--text-soft);font-size:1.15rem;margin:.4em 0 0}
.alt{background:linear-gradient(180deg,transparent 0%,
  color-mix(in srgb,var(--bg-soft) 62%,transparent) 16%,
  color-mix(in srgb,var(--bg-soft) 62%,transparent) 84%,transparent 100%)}

/* ---------- Live indicator ---------- */
.live-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#ff3b30;margin-right:7px;
  vertical-align:middle;box-shadow:0 0 0 0 rgba(255,59,48,.6);animation:livePulse 1.6s infinite}
@keyframes livePulse{0%{box-shadow:0 0 0 0 rgba(255,59,48,.55)}70%{box-shadow:0 0 0 9px rgba(255,59,48,0)}100%{box-shadow:0 0 0 0 rgba(255,59,48,0)}}

/* ---------- Responsive video (16:9) ---------- */
.video-frame{position:relative;width:100%;padding-top:56.25%;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-lg);background:#000}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.play-badge{position:absolute;inset:0;margin:auto;width:58px;height:58px;border-radius:50%;
  background:rgba(255,59,48,.92);color:#fff;display:grid;place-items:center;font-size:22px;padding-left:4px;
  pointer-events:none;box-shadow:0 6px 20px rgba(0,0,0,.35);transition:transform .3s var(--ease)}
.post-card:hover .play-badge{transform:scale(1.12)}

/* ---------- Home image carousel ---------- */
.carousel{position:relative}
.car-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;
  padding:6px 2px 14px;-ms-overflow-style:none;scrollbar-width:none}
.car-track::-webkit-scrollbar{display:none}
.car-slide{position:relative;flex:0 0 auto;width:min(420px,78vw);aspect-ratio:16/10;margin:0;scroll-snap-align:center;
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.car-slide img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.car-slide:hover img{transform:scale(1.05)}
.car-slide figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 14px;color:#fff;font-size:.9rem;
  background:linear-gradient(transparent,rgba(0,0,0,.72))}
.car-btn{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:blur(10px);
  color:var(--text);font-size:1.6rem;cursor:pointer;display:grid;place-items:center;transition:.2s}
.car-btn:hover{background:var(--bg);transform:translateY(-50%) scale(1.08)}
.car-btn.prev{left:-6px}.car-btn.next{right:-6px}
@media(max-width:640px){.car-btn{display:none}}

/* ---------- Gallery collage (masonry) ---------- */
.collage{columns:3;column-gap:14px}
.collage figure{margin:0 0 12px;break-inside:avoid;border-radius:var(--radius-sm);overflow:hidden;position:relative;
  box-shadow:var(--shadow);transition:transform .4s var(--ease)}
.collage figure:hover{transform:scale(1.02)}
.collage img{width:100%;display:block;transition:transform .6s var(--ease)}
.collage figure:hover img{transform:scale(1.05)}
.collage figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;color:#fff;font-size:.82rem;
  background:linear-gradient(transparent,rgba(0,0,0,.7));opacity:0;transition:opacity .3s}
.collage figure:hover figcaption{opacity:1}

/* ---------- Article ---------- */
.article{max-width:760px;margin:0 auto;padding:70px 22px}
.article h1{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:18px}
.article .a-meta{color:var(--text-soft);font-size:.9rem;margin-bottom:26px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.article .hero-img{border-radius:var(--radius);overflow:hidden;margin:10px 0 34px;box-shadow:var(--shadow)}
.article-body{font-size:1.12rem;line-height:1.75}
.article-body p{margin:0 0 1.2em}
.article-body img{border-radius:var(--radius-sm);margin:1.4em 0}
.article-body h2,.article-body h3{margin-top:1.6em}
.adslot{margin:40px auto;text-align:center;min-height:1px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:44px;align-items:start}
.info-item{display:flex;gap:14px;margin-bottom:26px}
.info-item .ico{width:44px;height:44px;border-radius:12px;flex:none;display:grid;place-items:center;font-size:19px;
  background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 18%,transparent),color-mix(in srgb,var(--brand-2) 18%,transparent))}
.info-item h4{margin:0 0 3px;font-size:1rem}
.info-item p{margin:0;color:var(--text-soft)}
.form-card{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:500;margin-bottom:7px}
.field input,.field textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:12px;
  background:var(--bg);color:var(--text);font-family:inherit;font-size:.98rem;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 18%,transparent)}
.field textarea{min-height:130px;resize:vertical}
.flash{padding:14px 18px;border-radius:12px;margin-bottom:20px;font-size:.95rem}
.flash.ok{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--text)}
.flash.err{background:color-mix(in srgb,#ff4d4f 16%,transparent);color:var(--text)}

/* ---------- Footer ---------- */
.footer{background:linear-gradient(180deg,transparent,var(--bg-soft) 14%);padding:70px 0 34px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer h4{font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-soft);margin:0 0 16px}
.footer ul{list-style:none;padding:0;margin:0}
.footer ul li{margin-bottom:10px}
.footer a{color:var(--text);opacity:.8;font-size:.92rem}
.footer a:hover{opacity:1}
.footer .muted{color:var(--text-soft);font-size:.9rem;max-width:320px}
.footer-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;color:var(--text-soft);font-size:.85rem}

/* ---------- Scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Empty / 404 ---------- */
.notice{text-align:center;padding:120px 22px}
.notice h1{font-size:3rem}

/* ---------- Pagination ---------- */
.pager{display:flex;gap:8px;justify-content:center;margin-top:50px}
.pager a,.pager span{padding:9px 15px;border-radius:10px;border:1px solid var(--line);color:var(--text);font-size:.9rem}
.pager .cur{background:var(--brand);color:#fff;border-color:var(--brand)}
.pager a:hover{text-decoration:none;background:var(--bg-soft)}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .grid-3,.posts{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .collage{columns:2}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  section{padding:64px 0}
  .menu{position:fixed;inset:var(--nav-h) 0 auto 0;flex-direction:column;background:var(--bg);
    border-bottom:1px solid var(--line);padding:20px 22px;gap:18px;transform:translateY(-120%);
    transition:transform .4s var(--ease);align-items:flex-start}
  .menu.open{transform:none}
  .burger{display:block}
  .grid-3,.posts,.stats{grid-template-columns:1fr}
  .collage{columns:2}
  .footer-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============================================================
   Cute-science additions: notices, live section, submit,
   rotators, and playful background animations
   ============================================================ */
.btn-sm{padding:9px 16px;font-size:.85rem}

/* ---- Notice / News bar ---- */
.notice-card{display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  background:linear-gradient(100deg,color-mix(in srgb,var(--sun) 22%,var(--bg-elev)),var(--bg-elev));
  border:1px solid color-mix(in srgb,var(--sun) 40%,var(--line));border-radius:var(--radius);
  padding:16px 20px;margin-bottom:14px;box-shadow:var(--shadow)}
.notice-badge{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.72rem;text-transform:uppercase;
  letter-spacing:.05em;color:#a86b00;background:color-mix(in srgb,var(--sun) 30%,#fff);padding:6px 12px;border-radius:980px;flex:none}
[data-theme="dark"] .notice-badge{color:#ffd77a;background:color-mix(in srgb,var(--sun) 22%,transparent)}
.notice-body{flex:1;min-width:220px}
.notice-body strong{display:block;font-size:1.02rem}
.notice-text{color:var(--text-soft);font-size:.92rem}

/* ---- Write-for-us CTA ---- */
.write-cta{display:flex;align-items:center;gap:24px;flex-wrap:wrap;justify-content:space-between;
  background:linear-gradient(120deg,color-mix(in srgb,var(--brand) 12%,var(--bg-elev)),color-mix(in srgb,var(--brand-2) 12%,var(--bg-elev)));
  border:1px solid var(--line);border-radius:var(--radius);padding:34px 36px;box-shadow:var(--shadow)}
.write-cta .sci-doodle{font-size:2.6rem;animation:wiggle 3s ease-in-out infinite}
@keyframes wiggle{0%,100%{transform:rotate(-6deg)}50%{transform:rotate(8deg)}}

/* ---- Steps indicator (submit article) ---- */
.steps{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.dotstep{font-size:.78rem;font-weight:600;color:var(--text-soft);background:var(--bg-soft);
  border:1px solid var(--line);padding:6px 12px;border-radius:980px}
.dotstep.on{color:#fff;background:var(--brand);border-color:var(--brand)}
.dotstep.done{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 50%,var(--line))}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.row2{grid-template-columns:1fr}}

/* ---- Live section (homepage last) ---- */
.live-section{position:relative;overflow:hidden;
  background:radial-gradient(1000px 500px at 15% 0,color-mix(in srgb,var(--brand) 10%,transparent),transparent),
             linear-gradient(180deg,transparent 0%,
               color-mix(in srgb,var(--bg-soft) 62%,transparent) 12%,
               color-mix(in srgb,var(--bg-soft) 62%,transparent) 88%,transparent 100%)}
.live-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:26px;align-items:start}
@media(max-width:820px){.live-grid{grid-template-columns:1fr}}
.vid-rotator{display:flex;flex-direction:column;gap:12px;max-height:520px;overflow-y:auto;scrollbar-width:thin}
.vid-item{display:flex;gap:12px;align-items:center;padding:8px;border-radius:14px;color:inherit;
  border:1px solid transparent;transition:.25s var(--ease)}
.vid-item:hover,.vid-item.active{background:var(--bg-elev);border-color:var(--line);text-decoration:none;box-shadow:var(--shadow)}
.vid-thumb{position:relative;flex:none;width:120px;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#000}
.vid-thumb img{width:100%;height:100%;object-fit:cover}
.vid-thumb .play-badge{width:34px;height:34px;font-size:13px}
.vid-title{font-size:.86rem;font-weight:500;line-height:1.35;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ============================================================
   Playful background animation layer (rocket, doodles, volcano)
   ============================================================ */
.sci-bg{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
body>*:not(.sci-bg){position:relative;z-index:1}
.sci-bg .doodle{position:absolute;opacity:.16;filter:saturate(1.2);will-change:transform}
[data-theme="dark"] .sci-bg .doodle{opacity:.22}
.sci-bg .d1{left:6%;top:22%;font-size:2rem;animation:drift 16s ease-in-out infinite}
.sci-bg .d2{right:8%;top:34%;font-size:2.4rem;animation:drift 20s ease-in-out infinite reverse}
.sci-bg .d3{left:12%;bottom:16%;font-size:2.2rem;animation:spin 24s linear infinite}
.sci-bg .d4{right:14%;bottom:24%;font-size:1.9rem;animation:drift 18s ease-in-out infinite}
.sci-bg .d5{left:46%;top:12%;font-size:1.7rem;animation:bob 7s ease-in-out infinite}
.sci-bg .d6{right:30%;bottom:10%;font-size:2rem;animation:spin 30s linear infinite reverse}
@keyframes drift{0%,100%{transform:translate(0,0) rotate(0)}50%{transform:translate(24px,-30px) rotate(12deg)}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-18px)}}
@keyframes spin{to{transform:rotate(360deg)}}

/* Rockets flying across on different wavy paths (both directions) */
.sci-bg .rocket{position:absolute;font-size:4rem;opacity:.55;will-change:transform;z-index:1}
.sci-bg .rocket span{display:inline-block}
/* left -> right, wavy */
.sci-bg .r1{left:0;top:60%;font-size:4.4rem;animation:flyLTR 24s linear infinite}
.sci-bg .r2{left:0;top:22%;font-size:3.2rem;opacity:.45;animation:flyLTR 32s linear infinite 5s}
/* right -> left, wavy */
.sci-bg .r3{left:0;top:12%;font-size:3.6rem;opacity:.5;animation:flyRTL 30s linear infinite 3s}
.sci-bg .r4{left:0;top:78%;font-size:3rem;opacity:.4;animation:flyRTL 38s linear infinite 12s}
/* travels left→right while waving up and down; nose points along travel */
@keyframes flyLTR{
  0%{transform:translate(-14vw,0) rotate(35deg)}
  12%{transform:translate(2vw,-9vh) rotate(20deg)}
  25%{transform:translate(20vw,4vh) rotate(45deg)}
  37%{transform:translate(38vw,-8vh) rotate(20deg)}
  50%{transform:translate(56vw,5vh) rotate(45deg)}
  62%{transform:translate(72vw,-7vh) rotate(20deg)}
  75%{transform:translate(90vw,4vh) rotate(45deg)}
  100%{transform:translate(124vw,-2vh) rotate(30deg)}
}
/* travels right→left while waving; mirrored so nose points left */
@keyframes flyRTL{
  0%{transform:translate(124vw,0) scaleX(-1) rotate(35deg)}
  12%{transform:translate(104vw,9vh) scaleX(-1) rotate(20deg)}
  25%{transform:translate(84vw,-4vh) scaleX(-1) rotate(45deg)}
  37%{transform:translate(64vw,8vh) scaleX(-1) rotate(20deg)}
  50%{transform:translate(46vw,-5vh) scaleX(-1) rotate(45deg)}
  62%{transform:translate(28vw,7vh) scaleX(-1) rotate(20deg)}
  75%{transform:translate(10vw,-4vh) scaleX(-1) rotate(45deg)}
  100%{transform:translate(-16vw,2vh) scaleX(-1) rotate(30deg)}
}
.sci-bg .d7{right:20%;top:18%;font-size:2rem;animation:bob 8s ease-in-out infinite}
.sci-bg .d8{left:30%;top:60%;font-size:1.5rem;animation:spin 26s linear infinite}

/* Cute volcano with puffs, bottom-left corner */
.sci-bg .volcano{position:absolute;left:2%;bottom:0;font-size:2.4rem;opacity:.3}
.sci-bg .volcano .puff{position:absolute;left:8px;top:-6px;width:10px;height:10px;border-radius:50%;
  background:color-mix(in srgb,var(--brand-2) 70%,#fff);opacity:0;animation:erupt 3.4s ease-out infinite}
.sci-bg .volcano .puff:nth-child(2){animation-delay:1.1s;left:16px;background:color-mix(in srgb,var(--sun) 70%,#fff)}
.sci-bg .volcano .puff:nth-child(3){animation-delay:2.2s;left:2px;background:color-mix(in srgb,var(--accent) 70%,#fff)}
@keyframes erupt{0%{opacity:.8;transform:translateY(0) scale(.5)}100%{opacity:0;transform:translateY(-70px) scale(1.6)}}

/* Section-start science equipment marker */
.sec-head{position:relative}
.sec-head .eyebrow::before{content:"";display:inline-block;width:18px;height:18px;margin-right:8px;vertical-align:-3px;
  background-size:contain;background-repeat:no-repeat;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236a5cff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='M9 3h6M10 3v6l-5 9a2 2 0 0 0 2 3h10a2 2 0 0 0 2-3l-5-9V3'/><path d='M7 15h10'/></svg>')}

@media(max-width:640px){
  .sci-bg .d2,.sci-bg .d4,.sci-bg .d6{display:none}
  .sci-bg .rocket{font-size:2.6rem!important}
}
@media(prefers-reduced-motion:reduce){
  .sci-bg{display:none}
}