/* =========================================================
   ZYTONA — Master Stylesheet
   Inspired by Roborock global site styling.
   Sleek · Premium · Image-led · No italics.
   ========================================================= */

:root{
  /* BRAND */
  --olive:#777b46;
  --olive-dark:#5e6234;
  --olive-deep:#3d4022;
  --olive-light:#a8ac7d;
  --olive-pale:#d4d6b6;
  --olive-mist:#f0f0e2;
  --olive-tint:#f7f5ec;
  --gold:#c8a84b;
  --cream:#faf7f0;

  /* NEUTRAL — Roborock-like palette */
  --black:#000000;
  --black-soft:#0d0d0d;
  --black-mid:#1a1a1a;
  --grey-900:#2b2b2b;
  --grey-800:#404040;
  --grey-700:#525252;
  --grey-600:#666666;
  --grey-500:#8a8a8a;
  --grey-400:#a8a8a8;
  --grey-300:#c8c8c8;
  --grey-200:#e3e3e3;
  --grey-100:#f4f4f4;
  --grey-50:#fafafa;
  --line:#ececec;
  --white:#ffffff;

  /* TYPE — single sans family, multiple weights */
  --sans:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono:'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* MOTION */
  --ease:cubic-bezier(.65,.05,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*{margin:0;padding:0;box-sizing:border-box;-webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;}
html{scroll-behavior:smooth; font-size:16px;}
body{
  font-family:var(--sans);
  background:var(--white);
  color:var(--black);
  font-weight:400;
  line-height:1.5;
  letter-spacing:-0.005em;
  overflow-x:hidden;
}
img,svg,video{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit; cursor:pointer; border:none; background:none;}

/* KILL ALL ITALICS */
em, i, .italic{font-style:normal !important;}
em{color:var(--olive); font-weight:inherit;}

/* ============ TYPOGRAPHY SYSTEM ============ */
h1, h2, h3, h4, h5{font-family:var(--sans); font-weight:700; letter-spacing:-0.02em; line-height:1.1;}

.txt-display{font-size:clamp(48px, 6vw, 88px); font-weight:700; letter-spacing:-0.025em; line-height:1.05;}
.txt-h1{font-size:clamp(40px, 5vw, 72px); font-weight:700; letter-spacing:-0.022em; line-height:1.08;}
.txt-h2{font-size:clamp(32px, 4vw, 56px); font-weight:700; letter-spacing:-0.018em; line-height:1.1;}
.txt-h3{font-size:clamp(24px, 2.5vw, 36px); font-weight:600; letter-spacing:-0.012em; line-height:1.2;}
.txt-h4{font-size:20px; font-weight:600; letter-spacing:-0.005em;}
.txt-body-lg{font-size:18px; line-height:1.55; color:var(--grey-700);}
.txt-body{font-size:15px; line-height:1.55; color:var(--grey-700);}
.txt-small{font-size:13px; line-height:1.45; color:var(--grey-600);}
.txt-eyebrow{font-size:11.5px; letter-spacing:0.18em; text-transform:uppercase; font-weight:500; color:var(--grey-700);}

/* ============ ANNOUNCE TICKER ============ */
.announce{
  background:var(--black);
  color:var(--white);
  padding:8px 0;
  overflow:hidden;
  font-size:11px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  font-weight:500;
}
.announce-track{display:flex; gap:60px; width:max-content; animation:scrollX 42s linear infinite;}
.announce-item{display:flex; align-items:center; gap:14px; white-space:nowrap; opacity:0.85;}
.announce-item .dot{width:4px; height:4px; background:var(--olive-light); border-radius:50%;}
@keyframes scrollX{from{transform:translateX(0);} to{transform:translateX(-50%);}}

/* ============ NAVIGATION (Roborock-style) ============ */
nav.main-nav{
  position:sticky; top:0; z-index:1000;
  background:var(--white);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1480px;
  margin:0 auto;
  padding:0 40px;
  height:64px;
  display:flex; align-items:center; justify-content:space-between;
  gap:32px;
}
.nav-logo{display:flex; align-items:center; flex-shrink:0;}
.nav-logo svg{height:24px; width:auto;}
.nav-logo .tag{display:none;}

.nav-menu{
  display:flex; align-items:center; gap:32px;
  list-style:none;
  flex:1;
  justify-content:center;
}
.nav-menu>li{position:relative;}
.nav-menu a{
  font-size:14px;
  font-weight:500;
  color:var(--black);
  letter-spacing:-0.005em;
  display:flex; align-items:center; gap:6px;
  padding:22px 0;
  transition:color .2s;
  position:relative;
}
.nav-menu a::after{
  content:'';
  position:absolute;
  bottom:14px; left:0; right:0;
  height:2px;
  background:var(--black);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .25s var(--ease);
}
.nav-menu a:hover::after,
.nav-menu a.active::after{transform:scaleX(1);}
.nav-menu a .chev{font-size:9px; opacity:.6; margin-top:1px; font-weight:600;}

.nav-actions{display:flex; align-items:center; gap:12px; flex-shrink:0;}
.nav-icon{
  width:36px; height:36px;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition:all .2s;
  color:var(--black);
  font-size:13px;
  font-weight:500;
}
.nav-icon:hover{background:var(--grey-100);}
.nav-cta{
  padding:10px 20px;
  background:var(--black);
  color:var(--white);
  font-size:13px;
  font-weight:500;
  letter-spacing:-0.005em;
  border-radius:100px;
  display:inline-flex; align-items:center; gap:8px;
  transition:all .25s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{background:var(--olive);}
.nav-cta svg{width:11px; height:8px;}

.menu-toggle{display:none;}

/* Sub-nav pill */
.subnav{background:var(--white); border-bottom:1px solid var(--line); padding:16px 0;}
.subnav-inner{max-width:1480px; margin:0 auto; padding:0 40px; display:flex; justify-content:center;}
.subnav-pill{display:flex; background:var(--grey-100); border-radius:100px; padding:4px;}
.subnav-pill a{padding:10px 24px; border-radius:100px; font-size:14px; font-weight:500; color:var(--grey-700); transition:all .25s;}
.subnav-pill a:hover{color:var(--black);}
.subnav-pill a.active{background:var(--black); color:var(--white);}

/* ============ HERO BANNER (stackable, image-led) ============ */
.banner{
  position:relative;
  min-height:680px;
  display:flex; align-items:center;
  overflow:hidden;
  background:var(--white);
}
.banner-light{background:linear-gradient(180deg, #fafafa 0%, #ebebec 100%); color:var(--black);}
.banner-cream{background:linear-gradient(180deg, #faf7f0 0%, #ebe5d4 100%); color:var(--black);}
.banner-dark{background:linear-gradient(180deg, #1a1a1a 0%, #050505 100%); color:var(--white);}
.banner-charcoal{background:linear-gradient(180deg, #2a2a2a 0%, #0a0a0a 100%); color:var(--white);}
.banner-olive{background:linear-gradient(135deg, #adb285 0%, #777b46 60%, #5e6234 100%); color:var(--white);}
.banner-olive-soft{background:linear-gradient(180deg, #e8eadc 0%, #c8cd9c 100%); color:var(--black);}
.banner-mint{background:linear-gradient(180deg, #d8e0c0 0%, #b8c598 100%); color:var(--black);}

.banner-inner{
  max-width:1480px; margin:0 auto; padding:80px 40px;
  width:100%;
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:60px;
  align-items:center;
  position:relative; z-index:2;
}
.banner-overline{
  font-size:11.5px;
  letter-spacing:0.22em;
  text-transform:uppercase;
  font-weight:600;
  color:var(--grey-600);
  margin-bottom:18px;
}
.banner-dark .banner-overline, .banner-charcoal .banner-overline{color:var(--olive-light);}
.banner-tag{
  display:inline-block;
  padding:5px 12px;
  background:var(--olive);
  color:var(--white);
  font-size:10px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  font-weight:500;
  border-radius:100px;
  margin-bottom:24px;
}
.banner-tag.dark-tag{background:var(--white); color:var(--black);}
.banner h1, .banner-title{
  font-size:clamp(44px, 5.4vw, 80px);
  font-weight:700;
  line-height:1.05;
  letter-spacing:-0.025em;
  margin-bottom:18px;
  color:inherit;
}
.banner-sub{
  font-size:18px;
  line-height:1.5;
  margin-bottom:32px;
  font-weight:400;
  opacity:0.85;
  max-width:480px;
}
.banner-dark .banner-sub, .banner-charcoal .banner-sub{opacity:0.7;}
.banner-features{list-style:none; display:flex; flex-direction:column; gap:8px; margin-bottom:36px;}
.banner-features li{font-size:15px; font-weight:500; opacity:0.85;}
.banner-actions{display:flex; gap:14px; flex-wrap:wrap;}

.banner-img{
  position:relative;
  display:flex; align-items:center; justify-content:center;
  min-height:520px;
}
.banner-img img{
  max-width:100%; max-height:580px;
  object-fit:contain;
  filter:drop-shadow(0 30px 50px rgba(0,0,0,.18));
}
.banner-img.bg-fill img{
  width:100%; height:100%; max-height:none;
  object-fit:cover;
  filter:none;
  border-radius:24px;
}

/* Banner with full background image */
.banner-fullbg{min-height:760px; position:relative; overflow:hidden;}
.banner-fullbg-bg{position:absolute; inset:0; z-index:0;}
.banner-fullbg-bg img{width:100%; height:100%; object-fit:cover;}
.banner-fullbg-bg::after{content:''; position:absolute; inset:0; background:linear-gradient(90deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 60%, transparent 100%);}
.banner-fullbg-inner{
  position:relative; z-index:3;
  max-width:1480px;
  margin:0 auto;
  padding:120px 40px;
  display:flex; flex-direction:column; align-items:flex-start;
  color:var(--white);
}
.banner-fullbg-inner h1{color:var(--white);}
.banner-fullbg-inner .banner-sub{color:rgba(255,255,255,0.85);}

/* ============ TABS / CATEGORY GRID ============ */
.tabs-section{background:var(--white); padding:80px 0;}
.tabs-row{display:flex; justify-content:center; margin-bottom:48px;}
.tabs-pill{display:flex; background:var(--grey-100); border-radius:100px; padding:4px;}
.tab-btn{
  padding:12px 28px;
  border-radius:100px;
  font-size:14px;
  font-weight:500;
  color:var(--grey-700);
  cursor:pointer;
  transition:all .25s;
  white-space:nowrap;
}
.tab-btn:hover{color:var(--black);}
.tab-btn.active{background:var(--black); color:var(--white);}

.tab-grid{display:grid; grid-template-columns:repeat(3, 1fr); gap:32px;}
.tab-card{background:var(--white); text-align:center; cursor:pointer; transition:transform .35s var(--ease);}
.tab-card:hover{transform:translateY(-4px);}
.tab-card-img{
  background:var(--grey-50);
  aspect-ratio:1/1;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:24px;
  position:relative;
  overflow:hidden;
  border-radius:8px;
}
.tab-card-img img{
  max-width:80%; max-height:80%;
  object-fit:contain;
  transition:transform .5s var(--ease);
}
.tab-card:hover .tab-card-img img{transform:scale(1.06);}
.tab-card-badge{
  position:absolute;
  top:16px; left:16px;
  padding:4px 10px;
  background:var(--black);
  color:var(--white);
  font-size:10px;
  letter-spacing:0.14em;
  text-transform:uppercase;
  font-weight:500;
  border-radius:100px;
}
.tab-card-badge.olive{background:var(--olive);}
.tab-card-name{font-size:24px; font-weight:700; letter-spacing:-0.012em; margin-bottom:14px; color:var(--black);}
.tab-card-features{
  font-size:13px;
  color:var(--grey-600);
  line-height:1.6;
  display:flex; flex-direction:column; gap:4px;
  align-items:center;
  margin-bottom:20px;
}
.tab-card-cta{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px;
  font-weight:500;
  color:var(--black);
  border-bottom:1px solid var(--black);
  padding-bottom:3px;
  transition:gap .25s, color .25s, border-color .25s;
}
.tab-card:hover .tab-card-cta{gap:14px; color:var(--olive); border-color:var(--olive);}

/* ============ DUO BANNER ============ */
.duo-banner{display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line);}
.duo-cell{
  position:relative;
  padding:80px 40px;
  min-height:560px;
  display:flex; flex-direction:column; justify-content:flex-end;
  align-items:center;
  text-align:center;
  overflow:hidden;
  background:var(--white);
}
.duo-cell-light{background:var(--grey-50);}
.duo-cell-dark{background:linear-gradient(180deg, #2a2a2a 0%, #050505 100%); color:var(--white);}
.duo-cell-cream{background:#f4ede0;}
.duo-cell-olive{background:linear-gradient(180deg, #c8cd9c 0%, #adb285 100%);}
.duo-cell-bg{position:absolute; inset:0; z-index:0;}
.duo-cell-bg img{width:100%; height:100%; object-fit:cover; filter:brightness(0.55);}
.duo-cell.has-bg{color:var(--white);}
.duo-cell.has-bg > *{position:relative; z-index:2;}

.duo-img{
  flex:1;
  width:100%;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:32px;
  min-height:280px;
  position:relative;
  z-index:2;
}
.duo-img img{max-width:90%; max-height:340px; object-fit:contain;}
.duo-name{font-size:32px; font-weight:700; letter-spacing:-0.018em; margin-bottom:12px;}
.duo-tag{font-size:15px; opacity:0.7; margin-bottom:24px;}
.duo-cta{
  display:inline-block;
  padding:12px 26px;
  border:1px solid currentColor;
  border-radius:100px;
  font-size:13px;
  font-weight:500;
  transition:all .25s;
}
.duo-cta:hover{background:currentColor; color:var(--white);}
.duo-cell-dark .duo-cta:hover, .duo-cell.has-bg .duo-cta:hover{background:var(--white); color:var(--black);}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:14px 28px;
  font-size:13px;
  font-weight:500;
  letter-spacing:-0.002em;
  border:1px solid;
  border-radius:100px;
  cursor:pointer;
  transition:all .25s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--olive); color:var(--white); border-color:var(--olive);}
.btn-primary:hover{background:var(--olive-dark); border-color:var(--olive-dark);}
.btn-dark{background:var(--black); color:var(--white); border-color:var(--black);}
.btn-dark:hover{background:var(--olive); border-color:var(--olive);}
.btn-line{background:transparent; color:var(--black); border-color:var(--black);}
.btn-line:hover{background:var(--black); color:var(--white);}
.btn-light-line{background:transparent; color:var(--white); border-color:rgba(255,255,255,0.5);}
.btn-light-line:hover{background:var(--white); color:var(--black); border-color:var(--white);}
.btn-arrow svg{width:14px; height:10px; transition:transform .25s;}
.btn:hover .btn-arrow svg{transform:translateX(4px);}

/* ============ SECTIONS ============ */
section{position:relative;}
.section{padding:100px 0;}
.section-pad-sm{padding:60px 0;}
.section-inner{max-width:1480px; margin:0 auto; padding:0 40px;}
.section-eyebrow{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:0.22em;
  text-transform:uppercase;
  color:var(--grey-700);
  margin-bottom:18px;
  font-weight:500;
}
.section-eyebrow.olive{color:var(--olive);}
.section-eyebrow.center{text-align:center;}
.section-title{
  font-family:var(--sans);
  font-size:clamp(36px, 4.2vw, 64px);
  font-weight:700;
  line-height:1.05;
  letter-spacing:-0.022em;
  color:var(--black);
}
.section-title.light{color:var(--white);}
.section-title em{font-style:normal; color:var(--olive); font-weight:700;}

/* ============ FEATURE STRIP ============ */
.strip-section{background:var(--grey-50); padding:60px 0; border-bottom:1px solid var(--line);}
.strip-grid{
  max-width:1480px;
  margin:0 auto;
  padding:0 40px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:48px;
}
.strip-item{text-align:center;}
.strip-icon{
  width:48px; height:48px;
  background:var(--white);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 16px;
  color:var(--olive);
}
.strip-item strong{display:block; font-size:14px; font-weight:600; color:var(--black); margin-bottom:4px; letter-spacing:-0.005em;}
.strip-item p{font-size:12.5px; color:var(--grey-600); line-height:1.5;}

/* ============ STATS BAND ============ */
.stats-section{
  background:var(--black);
  color:var(--white);
  padding:120px 0;
  position:relative;
  overflow:hidden;
}
.stats-section::before{
  content:''; position:absolute; inset:0;
  background:radial-gradient(ellipse at 30% 50%, rgba(168,172,125,.15) 0%, transparent 50%),
  radial-gradient(ellipse at 80% 50%, rgba(200,168,75,.06) 0%, transparent 50%);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  margin-top:60px;
  border-top:1px solid #2a2a2a;
}
.stat-item{padding:36px 30px 0 0; border-right:1px solid #2a2a2a;}
.stat-item:last-child{border-right:none;}
.stat-num{font-size:54px; font-weight:700; letter-spacing:-0.025em; line-height:1; margin-bottom:10px; color:var(--white);}
.stat-num em{font-style:normal; color:var(--olive-light); font-weight:700;}
.stat-label{font-size:13px; color:rgba(255,255,255,.55); font-weight:400;}

/* ============ FOOTER (Roborock-style) ============ */
footer{background:#0d0d0d; color:var(--white); padding:72px 0 28px;}
.footer-grid{
  max-width:1480px;
  margin:0 auto;
  padding:0 40px;
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;
  gap:48px;
  margin-bottom:56px;
}
.footer-logo{margin-bottom:18px;}
.footer-logo svg{height:26px; width:auto;}
.footer-tag{
  font-size:14px;
  color:rgba(255,255,255,0.55);
  margin-bottom:20px;
  line-height:1.5;
  font-style:normal;
}
.footer-about{font-size:13px; color:rgba(255,255,255,.45); line-height:1.6; margin-bottom:24px; max-width:340px;}
.footer-locs{
  display:flex; gap:32px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--grey-400);
}
.footer-locs strong{color:var(--white); display:block; margin-bottom:4px; font-weight:500;}
.footer-col h5{font-size:13px; font-weight:600; color:var(--white); margin-bottom:18px; letter-spacing:-0.005em;}
.footer-col ul{list-style:none;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:13px; color:rgba(255,255,255,.55); transition:color .2s; font-weight:400;}
.footer-col ul a:hover{color:var(--white);}
.footer-bottom{
  max-width:1480px;
  margin:0 auto;
  padding:24px 40px 0;
  border-top:1px solid #1a1a1a;
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:20px;
  font-size:12px;
  color:var(--grey-500);
}
.footer-bottom-left{display:flex; gap:24px; flex-wrap:wrap;}
.footer-socials{display:flex; gap:10px;}
.footer-social{
  width:34px; height:34px;
  border:1px solid #262626;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  color:rgba(255,255,255,.6);
  transition:all .2s;
}
.footer-social:hover{border-color:var(--olive); color:var(--white); background:rgba(168,172,125,.08);}

/* ============ REVEAL ============ */
.reveal{opacity:0; transform:translateY(30px); transition:opacity .8s var(--ease), transform .8s var(--ease);}
.reveal.in{opacity:1; transform:translateY(0);}
.reveal-d2{transition-delay:.1s;}
.reveal-d3{transition-delay:.2s;}

/* ============ IMAGE GRIDS / LIFESTYLE ============ */
.img-grid-2{display:grid; grid-template-columns:1fr 1fr; gap:8px;}
.img-grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:8px;}
.img-grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:8px;}
.img-tile{
  position:relative;
  aspect-ratio:1/1;
  overflow:hidden;
  border-radius:8px;
  background:var(--grey-100);
}
.img-tile.tall{aspect-ratio:3/4;}
.img-tile.wide{aspect-ratio:16/9;}
.img-tile img{width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease);}
.img-tile:hover img{transform:scale(1.04);}
.img-tile-caption{
  position:absolute;
  bottom:16px; left:16px; right:16px;
  color:var(--white);
  font-size:14px;
  font-weight:600;
  text-shadow:0 2px 8px rgba(0,0,0,0.4);
}

/* Lifestyle hero strip */
.lifestyle-strip{position:relative; height:480px; overflow:hidden;}
.lifestyle-strip > img{width:100%; height:100%; object-fit:cover;}
.lifestyle-strip::after{content:''; position:absolute; inset:0; background:linear-gradient(90deg, rgba(0,0,0,0.55) 0%, transparent 60%);}
.lifestyle-strip-content{
  position:absolute;
  top:50%; left:64px;
  transform:translateY(-50%);
  color:var(--white);
  z-index:2;
  max-width:520px;
}
.lifestyle-strip-content h3{font-size:48px; font-weight:700; letter-spacing:-0.022em; margin-bottom:14px;}
.lifestyle-strip-content p{font-size:17px; opacity:0.85; margin-bottom:24px;}

/* Image marquee row — Roborock-like full-width image strip */
.image-marquee{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:8px;
}
.image-marquee .img-tile{aspect-ratio:1/1;}

/* ============ RESPONSIVE ============ */
@media(max-width:1100px){
  .nav-menu{display:none;}
  .menu-toggle{display:flex; flex-direction:column; gap:5px; cursor:pointer;}
  .menu-toggle span{width:22px; height:1.5px; background:var(--black);}
  .banner-inner{grid-template-columns:1fr; gap:40px; padding:60px 40px;}
  .banner{min-height:auto;}
  .banner-img{min-height:340px;}
  .duo-banner{grid-template-columns:1fr;}
  .duo-cell{min-height:480px;}
  .tab-grid{grid-template-columns:1fr;}
  .strip-grid,.stats-grid,.footer-grid{grid-template-columns:1fr 1fr; gap:32px;}
  .stat-item{border-right:none; padding:24px 0;}
  .img-grid-3,.img-grid-4,.image-marquee{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:680px){
  .nav-inner{padding:0 20px;}
  .section-inner,.banner-inner,.footer-grid,.footer-bottom,.strip-grid{padding-left:20px; padding-right:20px;}
  .banner h1, .banner-title{font-size:38px;}
  .strip-grid,.stats-grid,.footer-grid{grid-template-columns:1fr;}
  .img-grid-2,.img-grid-3,.img-grid-4,.image-marquee{grid-template-columns:1fr;}
  .nav-cta{display:none;}
  .lifestyle-strip-content{left:24px; right:24px;}
  .lifestyle-strip-content h3{font-size:32px;}
}