/* ===== AERLUX — premium dark-tech ceiling fan store ===== */
:root{
  --bg:#07090e; --bg2:#0b0e15; --surface:#11151f; --surface2:#161b28;
  --line:rgba(255,255,255,.08); --line2:rgba(255,255,255,.15);
  --cyan:#3ad6ff; --cyan-2:#8be8ff; --blue:#5a86ff; --amber:#ffb56b; --amber-2:#ffd29a;
  --txt:#eef3f8; --muted:#94a0b3; --muted2:#646f82;
  --r:18px; --rs:12px; --maxw:1180px;
  --display:"Space Grotesk",sans-serif; --body:"Inter",sans-serif; --serif:"Instrument Serif",serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--txt);font-family:var(--body);font-size:17px;line-height:1.6;overflow-x:hidden;letter-spacing:-.01em;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.05;letter-spacing:-.03em}
.serif{font-family:var(--serif);font-weight:400;font-style:italic;letter-spacing:0}
.grad{background:linear-gradient(105deg,var(--cyan-2),var(--amber));-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{display:inline-block;font-family:var(--display);font-size:.78rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);margin-bottom:18px}
section{position:relative;z-index:1}

/* ambient */
.ambient{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(120px);opacity:.45;mix-blend-mode:screen}
.orb--cyan{width:58vw;height:58vw;left:-16vw;top:-12vw;background:radial-gradient(circle,#2bb6ff,transparent 65%)}
.orb--amber{width:40vw;height:40vw;right:-10vw;top:26vh;background:radial-gradient(circle,#ff9e3d,transparent 65%);opacity:.28}
.orb--blue{width:42vw;height:42vw;left:12vw;bottom:-12vw;background:radial-gradient(circle,#4a6cff,transparent 65%);opacity:.3}
.grain{position:absolute;inset:0;opacity:.5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.4'/%3E%3C/svg%3E");mix-blend-mode:overlay}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--display);font-weight:600;font-size:.98rem;border:none;cursor:pointer;border-radius:100px;padding:14px 26px;transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s,background .25s;white-space:nowrap}
.btn--primary{background:linear-gradient(105deg,var(--cyan),var(--blue));color:#04121b;box-shadow:0 10px 30px -8px rgba(58,214,255,.55),inset 0 1px 0 rgba(255,255,255,.35)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(58,214,255,.75),inset 0 1px 0 rgba(255,255,255,.4)}
.btn--lg{padding:17px 34px;font-size:1.05rem}
.btn--ghost{background:rgba(255,255,255,.04);color:var(--txt);border:1px solid var(--line2)}
.btn--ghost:hover{background:rgba(255,255,255,.09);transform:translateY(-1px)}
.btn--text{background:transparent;color:var(--muted);padding:14px 8px}
.btn--text:hover{color:var(--txt)}

/* topbar */
.topbar{position:relative;z-index:40;text-align:center;font-size:.86rem;padding:9px 16px;background:linear-gradient(90deg,rgba(58,214,255,.14),rgba(90,134,255,.14));border-bottom:1px solid var(--line);color:var(--cyan-2);font-weight:500}
.topbar strong{color:var(--amber-2)}

/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:16px clamp(18px,5vw,48px);transition:background .3s,backdrop-filter .3s,padding .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(7,9,14,.74);backdrop-filter:blur(18px) saturate(140%);border-color:var(--line);padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:1.25rem;letter-spacing:.02em}
.brand__mark{width:16px;height:16px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff,var(--cyan) 55%,var(--blue));box-shadow:0 0 14px rgba(58,214,255,.8)}
.brand__lux{color:var(--cyan)}
.nav__links{display:flex;gap:30px;font-size:.95rem;color:var(--muted)}
.nav__links a{transition:color .2s}.nav__links a:hover{color:var(--txt)}
.nav__cta{font-size:.9rem;padding:11px 20px}

/* hero */
.hero{padding:clamp(50px,8vh,90px) clamp(18px,5vw,48px) 0;max-width:var(--maxw);margin:0 auto}
.hero__inner{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero__title{font-size:clamp(2.6rem,6.2vw,4.8rem);font-weight:700;margin:18px 0 24px}
.hero__title span{display:block}
.hero__title em{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--cyan-2)}
.hero__sub{font-size:clamp(1.05rem,1.6vw,1.2rem);color:var(--muted);max-width:30em;margin-bottom:30px}
.hero__sub strong{color:var(--txt);font-weight:600}
.hero__cta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.hero__trust{display:flex;align-items:center;gap:12px;font-size:.92rem;color:var(--muted);margin-bottom:22px}
.hero__trust strong{color:var(--txt)}
.stars{color:var(--amber);letter-spacing:2px;font-size:.95rem}
.hero__chips{list-style:none;display:flex;gap:10px;flex-wrap:wrap}
.hero__chips li{font-size:.85rem;color:var(--txt);background:rgba(255,255,255,.05);border:1px solid var(--line);padding:8px 14px;border-radius:100px}

/* hero art */
.hero__art{display:flex;justify-content:center}
.hero__stage{position:relative;width:min(440px,86vw);aspect-ratio:1}
.hero__img{position:absolute;inset:0;background-size:contain;background-repeat:no-repeat;background-position:center;z-index:2;filter:drop-shadow(0 40px 60px rgba(0,0,0,.6));animation:floaty 6s ease-in-out infinite}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.hero__halo{position:absolute;inset:8%;border-radius:50%;background:radial-gradient(circle,rgba(255,181,107,.35),rgba(58,214,255,.18) 45%,transparent 70%);filter:blur(30px);z-index:1;animation:pulse 5s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.7;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}
.hero__price-tag{position:absolute;right:2%;bottom:12%;z-index:3;background:rgba(11,14,21,.85);backdrop-filter:blur(8px);border:1px solid var(--line2);border-radius:14px;padding:10px 16px;font-family:var(--display);font-size:.85rem;color:var(--muted)}
.hero__price-tag b{display:block;font-size:1.4rem;color:#fff;letter-spacing:-.02em}

/* marquee */
.marquee{margin-top:70px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee__track{display:flex;gap:24px;white-space:nowrap;width:max-content;animation:scroll 30s linear infinite;padding:15px 0;font-family:var(--display);font-size:.92rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.marquee__track span{opacity:.75}
@keyframes scroll{to{transform:translateX(-50%)}}

/* promise */
.promise{max-width:var(--maxw);margin:80px auto;padding:0 clamp(18px,5vw,48px)}
.promise__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.promise__item{background:var(--bg);padding:30px 24px;display:flex;flex-direction:column;gap:8px}
.promise__num{font-family:var(--display);font-size:2.5rem;font-weight:700;background:linear-gradient(120deg,var(--cyan-2),var(--amber));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.promise__num small{font-size:1.1rem;font-weight:600}
.promise__item span:last-child{color:var(--muted);font-size:.94rem;line-height:1.4}

/* section heads */
.section-head{max-width:760px;margin:0 auto 54px;text-align:center;padding:0 clamp(18px,5vw,48px)}
.section-head h2{font-size:clamp(2rem,4.5vw,3.2rem)}
.section-head p{color:var(--muted);margin-top:18px;font-size:1.08rem}
.section-head strong{color:var(--txt)}

/* features bento */
.features{max-width:var(--maxw);margin:100px auto;padding:0 clamp(18px,5vw,48px)}
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;grid-auto-rows:minmax(220px,auto)}
.bento__cell{position:relative;background:linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s}
.bento__cell:hover{transform:translateY(-5px);border-color:var(--line2)}
.bento__cell--lg{grid-row:span 2;grid-column:span 1}
.bento__cell--wide{grid-column:span 2}
.bento__media{flex:1;min-height:160px;background-size:cover;background-position:center}
.bento__cell--lg .bento__media{min-height:300px}
.bento__txt{padding:24px 26px}
.bento__txt--solo{flex:1;display:flex;flex-direction:column;justify-content:center}
.bento__tag{font-family:var(--display);font-size:.72rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);display:block;margin-bottom:9px}
.bento__cell h3{font-size:1.3rem;margin-bottom:8px}
.bento__cell--lg h3{font-size:1.55rem}
.bento__cell p{color:var(--muted);font-size:.96rem}
.bento__mini{margin-top:16px;font-size:.9rem;color:var(--cyan-2);font-family:var(--display)}

/* gallery */
.gallery{max-width:var(--maxw);margin:100px auto;padding:0 clamp(18px,5vw,48px)}
.gallery__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.gshot{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.gshot--tall{grid-row:span 2}
.gshot__img{width:100%;height:100%;min-height:240px;background-size:cover;background-position:center;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.gshot--tall .gshot__img{min-height:500px}
.gshot:hover .gshot__img{transform:scale(1.04)}
.gshot figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;background:linear-gradient(transparent,rgba(7,9,14,.85));font-family:var(--display);font-size:.9rem;color:#fff}

/* packs */
.packs{max-width:var(--maxw);margin:110px auto;padding:0 clamp(18px,5vw,48px)}
.color-pick{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:30px;font-family:var(--display);font-size:.95rem;color:var(--muted)}
.swatch{width:30px;height:30px;border-radius:50%;border:2px solid var(--line2);cursor:pointer;transition:transform .2s,box-shadow .2s}
.swatch--white{background:#f2f4f8}
.swatch--black{background:#1a1d24}
.swatch.is-active{box-shadow:0 0 0 3px var(--bg),0 0 0 5px var(--cyan);transform:scale(1.08)}
.color-name{color:var(--txt);font-weight:600;min-width:60px}
.packs__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
.pk{position:relative;background:linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid var(--line);border-radius:22px;padding:30px 26px;display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s,box-shadow .35s}
.pk:hover{transform:translateY(-6px);border-color:var(--line2)}
.pk--best{border-color:rgba(58,214,255,.5);box-shadow:0 0 0 1px rgba(58,214,255,.25),0 30px 60px -30px rgba(58,214,255,.5)}
.pk--best:hover{box-shadow:0 0 0 1px rgba(58,214,255,.4),0 36px 70px -28px rgba(58,214,255,.6)}
.pk__badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(105deg,var(--cyan),var(--blue));color:#04121b;font-family:var(--display);font-weight:700;font-size:.72rem;letter-spacing:.06em;padding:6px 16px;border-radius:100px;text-transform:uppercase;white-space:nowrap}
.pk__qty{font-family:var(--display);font-size:1.35rem;font-weight:600;margin-bottom:4px}
.pk__sub{color:var(--muted);font-size:.9rem;margin-bottom:20px}
.pk__price{display:flex;align-items:baseline;gap:9px;margin-bottom:4px}
.pk__now{font-family:var(--display);font-size:2.4rem;font-weight:700;color:#fff;line-height:1}
.pk__old{font-size:1rem;color:var(--muted2);text-decoration:line-through}
.pk__unit{color:var(--cyan-2);font-size:.9rem;margin-bottom:22px}
.pk__list{list-style:none;display:grid;gap:10px;margin-bottom:24px}
.pk__list li{position:relative;padding-left:26px;color:var(--muted);font-size:.93rem}
.pk__list li::before{content:"✓";position:absolute;left:0;color:var(--cyan);font-weight:700}
.pk__buy{margin-top:auto;width:100%;justify-content:center}
.packs__foot{text-align:center;color:var(--muted);font-size:.92rem;margin-top:30px}

/* buybox (compra única) */
.buybox{max-width:760px;margin:0 auto;display:grid;grid-template-columns:.85fr 1.15fr;gap:0;background:linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid var(--line2);border-radius:24px;overflow:hidden}
.buybox__media{position:relative;background-size:cover;background-position:center;background-color:#0a0d14;min-height:320px}
.buybox__save{position:absolute;top:16px;left:16px;background:var(--amber);color:#211405;font-family:var(--display);font-weight:700;font-size:.8rem;letter-spacing:.04em;padding:6px 13px;border-radius:100px}
.buybox__info{padding:clamp(26px,4vw,40px)}
.buybox__cat{font-family:var(--display);font-size:.74rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}
.buybox__name{font-size:2rem;margin:6px 0 14px}
.buybox__price{display:flex;align-items:baseline;gap:12px;margin-bottom:20px}
.buybox__now{font-family:var(--display);font-size:2.6rem;font-weight:700;color:#fff;line-height:1}
.buybox__old{font-size:1.15rem;color:var(--muted2);text-decoration:line-through}
.buybox .color-pick{justify-content:flex-start;margin:0 0 20px}
.buybox__perks{list-style:none;display:grid;gap:11px;margin:0 0 24px}
.buybox__perks li{position:relative;padding-left:26px;color:var(--txt);font-size:.95rem}
.buybox__perks li::before{content:"✓";position:absolute;left:0;color:var(--cyan);font-weight:700}
.buybox__buy{width:100%;justify-content:center}
.buybox__foot{display:block;text-align:center;color:var(--muted);font-size:.86rem;margin-top:14px}
@media(max-width:680px){.buybox{grid-template-columns:1fr}.buybox__media{min-height:240px}}

/* how */
.how{background:linear-gradient(180deg,transparent,rgba(58,214,255,.05),transparent);padding:90px 0}
.how__inner{max-width:var(--maxw);margin:0 auto;padding:0 clamp(18px,5vw,48px)}
.how__head{text-align:center;margin-bottom:54px}
.how__head h2{font-size:clamp(1.9rem,4vw,3rem)}
.how__steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:34px}
.step__n{font-family:var(--display);font-size:2.4rem;font-weight:700;color:var(--cyan);opacity:.55;display:block;margin-bottom:14px}
.step h3{font-size:1.3rem;margin-bottom:10px}
.step p{color:var(--muted)}

/* testimonials */
.testi{max-width:var(--maxw);margin:110px auto;padding:0 clamp(18px,5vw,48px)}
.testi__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tcard{background:linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid var(--line);border-radius:var(--r);padding:30px}
.tcard .stars{margin-bottom:16px}
.tcard blockquote{font-size:1.04rem;line-height:1.55;margin-bottom:18px}
.tcard figcaption{color:var(--muted);font-size:.9rem;font-family:var(--display)}

/* faq */
.faq{max-width:820px;margin:110px auto;padding:0 clamp(18px,5vw,48px)}
.faq__list{display:flex;flex-direction:column;gap:12px}
.faq__item{background:var(--surface);border:1px solid var(--line);border-radius:var(--rs);padding:4px 22px;transition:border-color .25s}
.faq__item[open]{border-color:var(--line2)}
.faq__item summary{font-family:var(--display);font-weight:600;font-size:1.05rem;padding:18px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";color:var(--cyan);font-size:1.4rem;font-weight:400;transition:transform .25s}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item p{color:var(--muted);padding:0 0 20px;font-size:.98rem}

/* final */
.final{max-width:var(--maxw);margin:0 auto 100px;padding:0 clamp(18px,5vw,48px)}
.final__inner{text-align:center;background:radial-gradient(120% 140% at 50% 0%,rgba(58,214,255,.2),transparent 60%),linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid var(--line2);border-radius:32px;padding:clamp(48px,7vw,90px) clamp(24px,5vw,60px)}
.final__inner h2{font-size:clamp(2rem,4.6vw,3.4rem);margin-bottom:18px}
.final__inner p{color:var(--muted);max-width:34em;margin:0 auto 32px;font-size:1.08rem}
.final__cta{display:flex;gap:14px;justify-content:center;align-items:center;flex-wrap:wrap}

/* footer */
.foot{border-top:1px solid var(--line);padding:50px clamp(18px,5vw,48px);text-align:center;color:var(--muted)}
.foot__brand{font-family:var(--display);font-weight:700;font-size:1.3rem;margin-bottom:8px;display:flex;align-items:center;justify-content:center;gap:9px}
.foot__lux{color:var(--cyan)}
.foot p{margin-bottom:18px;font-family:var(--serif);font-style:italic;font-size:1.2rem;color:var(--cyan-2)}
.foot__links{display:flex;gap:24px;justify-content:center;margin-bottom:20px;font-size:.95rem}
.foot__links a:hover{color:var(--txt)}
.foot small{color:var(--muted2);font-size:.85rem}

/* modal */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.modal__overlay{position:absolute;inset:0;background:rgba(3,5,9,.72);backdrop-filter:blur(8px)}
.modal__card{position:relative;width:100%;max-width:460px;background:linear-gradient(180deg,var(--surface),var(--bg2));border:1px solid var(--line2);border-radius:24px;padding:32px;max-height:92vh;overflow-y:auto;animation:pop .35s cubic-bezier(.2,.8,.2,1)}
@keyframes pop{from{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}
.modal__x{position:absolute;top:16px;right:16px;background:rgba(255,255,255,.06);border:none;color:var(--muted);width:34px;height:34px;border-radius:50%;cursor:pointer;font-size:.9rem;transition:all .2s;z-index:2}
.modal__x:hover{background:rgba(255,255,255,.12);color:#fff}
.co__head{display:flex;gap:14px;align-items:center;margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.co__thumb{width:58px;height:58px;flex-shrink:0;border-radius:12px;background:var(--surface2);background-size:cover;background-position:center;border:1px solid var(--line2)}
.co__head h3{font-size:1.1rem;line-height:1.1;margin-bottom:5px}
.co__head .co__price{font-family:var(--display);font-weight:700;font-size:1.25rem;color:var(--amber-2)}
.co__head .co__meta{color:var(--muted);font-size:.85rem}
.co__row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.co__field{margin-bottom:11px}
.co__field label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:5px;font-weight:500}
.co__field input{width:100%;background:var(--bg);border:1px solid var(--line2);border-radius:10px;padding:12px 14px;color:var(--txt);font-family:var(--body);font-size:1rem;transition:border-color .2s}
.co__field input:focus{outline:none;border-color:var(--cyan)}
.co__pay{width:100%;margin-top:8px;justify-content:center}
.co__note{text-align:center;color:var(--muted2);font-size:.82rem;margin-top:13px;line-height:1.5}
.co__success{text-align:center;padding:10px 0}
.co__check{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#04121b;display:flex;align-items:center;justify-content:center;font-size:1.9rem;font-weight:700;margin:0 auto 20px;box-shadow:0 0 30px rgba(58,214,255,.6)}
.co__success h3{font-size:1.35rem;margin-bottom:10px}
.co__success p{color:var(--muted);margin-bottom:8px}
.spinner{width:18px;height:18px;border:2px solid rgba(4,18,27,.35);border-top-color:#04121b;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}

/* reveal */
.reveal{opacity:0;transform:translateY(26px)}
.reveal.in{opacity:1;transform:none;transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}

/* responsive */
@media(max-width:900px){
  .hero__inner{grid-template-columns:1fr;gap:36px}
  .hero__art{order:-1}
  .nav__links{display:none}
  .promise__grid{grid-template-columns:repeat(2,1fr)}
  .bento{grid-template-columns:1fr 1fr}
  .bento__cell--lg{grid-row:span 1}
  .bento__cell--wide{grid-column:span 2}
  .gallery__grid{grid-template-columns:1fr 1fr}
  .gshot--tall{grid-row:span 1}
  .packs__grid,.how__steps,.testi__grid{grid-template-columns:1fr}
  .packs__grid{max-width:380px;margin:0 auto}
}
@media(max-width:560px){
  body{font-size:16px}
  .promise__grid{grid-template-columns:1fr}
  .bento,.gallery__grid{grid-template-columns:1fr}
  .bento__cell--wide{grid-column:span 1}
  .nav__cta{display:none}
  .co__row{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}