/* ===== Oxford Stove — styles ===== */
:root{
  --fire-deep:#c1121f;
  --fire-orange:#f77f00;
  --fire-amber:#fcbf49;
  --ink:#1c1814;
  --ink-soft:#5a5249;
  --line:#e7dfd4;
  --cream:#faf6ef;
  --cream-2:#f3ece0;
  --white:#ffffff;
  --maxw:1200px;
  --shadow:0 10px 40px rgba(28,24,20,.10);
  --shadow-lg:0 20px 60px rgba(28,24,20,.16);
  --radius:14px;
  --serif:Georgia,"Times New Roman","Songti SC",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.65;font-size:16px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--ink-soft);font-style:italic}

/* ===== buttons ===== */
.btn{display:inline-block;padding:14px 32px;border-radius:40px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:transform .25s,box-shadow .25s,background .25s;letter-spacing:.3px}
.btn:hover{transform:translateY(-2px)}
.btn-light{background:var(--white);color:var(--ink);box-shadow:var(--shadow)}
.btn-light:hover{box-shadow:var(--shadow-lg)}
.btn-fire{background:linear-gradient(135deg,var(--fire-deep),var(--fire-orange));color:#fff;width:100%;box-shadow:0 8px 24px rgba(193,18,31,.32)}
.btn-fire:hover{box-shadow:0 12px 32px rgba(193,18,31,.42)}

/* ===== nav ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,box-shadow .3s,padding .3s;padding:18px 0}
.nav.scrolled{background:rgba(250,246,239,.92);backdrop-filter:blur(10px);box-shadow:0 2px 20px rgba(28,24,20,.06);padding:12px 0}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.brand-logo{height:42px;width:auto}
.brand{margin-left:48px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:15px;font-weight:500;color:var(--ink);opacity:.82;transition:opacity .2s,color .2s}
.nav-links a:hover{opacity:1;color:var(--fire-deep)}
.nav-cta{background:var(--ink);color:#fff !important;padding:9px 20px;border-radius:30px;opacity:1 !important}
.nav-cta:hover{background:var(--fire-deep)}
.nav-tools{display:flex;align-items:center;gap:14px}
.lang-toggle{background:none;border:1px solid var(--line);border-radius:20px;padding:6px 14px;font-size:13px;font-weight:600;cursor:pointer;color:var(--ink);transition:.2s}
.lang-toggle:hover{border-color:var(--fire-deep);color:var(--fire-deep)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.3s}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{position:fixed;top:0;right:-100%;width:75%;max-width:320px;height:100vh;background:var(--cream);box-shadow:var(--shadow-lg);z-index:99;padding:90px 30px 30px;display:flex;flex-direction:column;gap:18px;transition:right .35s}
.mobile-menu.open{right:0}
.mobile-menu a{font-size:18px;font-weight:500;padding:10px 0;border-bottom:1px solid var(--line)}

/* ===== hero ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-video img{display:none}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,16,12,.25) 0%,rgba(20,16,12,.18) 35%,rgba(20,16,12,.65) 100%)}
.hero-content{position:relative;z-index:2;max-width:560px;padding:0 24px;margin-left:6vw;width:100%}
.hero-badge{display:inline-block;background:rgba(252,191,73,.18);border:1px solid rgba(252,191,73,.5);color:var(--fire-amber);padding:7px 18px;border-radius:30px;font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:24px}
.hero-title{font-family:var(--serif);font-size:clamp(34px,6vw,64px);line-height:1.1;font-weight:700;margin-bottom:20px;text-shadow:0 2px 20px rgba(0,0,0,.4);font-feature-settings:"lnum";font-variant-numeric:lining-nums}
.hero-sub{font-size:clamp(15px,2vw,19px);max-width:560px;margin-bottom:34px;opacity:.95;text-shadow:0 1px 10px rgba(0,0,0,.5)}
.hero-scroll{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:2;font-size:12px;letter-spacing:2px;text-transform:uppercase;opacity:.7;animation:bob 2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ===== sections ===== */
.section{padding:96px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-title{font-family:var(--serif);font-size:clamp(28px,4vw,42px);font-weight:700;margin-bottom:14px;color:var(--ink)}
.section-sub{font-size:17px;color:var(--ink-soft)}

/* ===== features ===== */
.features{background:var(--cream)}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.feature-img{aspect-ratio:4/3;overflow:hidden;background:var(--cream-2)}
.feature-img img{width:100%;height:100%;object-fit:cover;object-position:center center;transition:transform .5s}
.feature-card:hover .feature-img img{transform:scale(1.05)}
.feature-card h3{font-size:19px;margin:20px 20px 8px;color:var(--ink)}
.feature-card p{font-size:14px;color:var(--ink-soft);margin:0 20px 22px}

/* ===== products ===== */
.products{background:var(--cream-2)}
.product-room-section{margin-bottom:40px}
.product-room-title{font-family:var(--serif);font-size:24px;color:var(--ink);margin-bottom:18px;padding-bottom:10px;border-bottom:2px solid var(--fire-amber)}
.product-room-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;text-align:center}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-img{aspect-ratio:1;background:#fff;padding:20px}
.product-img img{width:100%;height:100%;object-fit:contain}
.product-name{font-family:var(--serif);font-size:21px;margin:6px 0 4px}
.product-dim{font-size:13px;color:var(--ink-soft);margin-bottom:12px}
.product-price{font-size:14px;color:var(--ink-soft);padding:0 16px 22px}
.product-price strong{color:var(--fire-deep);font-size:22px;font-family:var(--serif)}
.product-custom{text-align:center;background:#fff;border-radius:var(--radius);padding:40px 24px;box-shadow:var(--shadow);margin-top:16px}
.product-custom h3{font-family:var(--serif);font-size:22px;margin-bottom:10px}
.product-custom p{font-size:15px;color:var(--ink-soft);max-width:480px;margin:0 auto 22px;line-height:1.6}
.products-note{text-align:center;margin-top:34px;font-size:14px;color:var(--ink-soft)}

/* ===== experience ===== */
.experience{background:var(--ink);color:#f5efe6}
.experience .section-title,.experience .section-sub{color:#f5efe6}
.experience .section-sub{opacity:.8}
.exp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.exp-item{padding:6px 4px}
.exp-ico{font-size:30px;display:block;margin-bottom:12px}
.exp-item h3{font-size:17px;margin-bottom:8px;color:var(--fire-amber)}
.exp-item p{font-size:14px;opacity:.78;line-height:1.6}

/* ===== gallery ===== */
.gallery{background:var(--cream)}
.gallery-wrap{position:relative;display:flex;align-items:center;gap:10px;padding:0 20px}
.gallery-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 4px;scrollbar-width:none}
.gallery-track::-webkit-scrollbar{display:none}
.gallery-cell{flex:0 0 auto;width:min(440px,80vw);scroll-snap-align:start;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:16/10}
.gallery-cell img{width:100%;height:100%;object-fit:cover}
.gal-btn{flex:0 0 auto;width:46px;height:46px;border-radius:50%;border:none;background:#fff;color:var(--ink);font-size:26px;cursor:pointer;box-shadow:var(--shadow);transition:.2s;z-index:2}
.gal-btn:hover{background:var(--fire-deep);color:#fff}

/* ===== specs ===== */
.specs{background:var(--cream-2)}
.specs-table{max-width:820px;margin:0 auto;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.specs-row{display:grid;grid-template-columns:240px 1fr;padding:16px 24px;border-bottom:1px solid var(--line);font-size:15px}
.specs-row:last-child{border-bottom:none}
.specs-head{background:var(--ink);color:#fff;font-weight:600}
.specs-row span:first-child{font-weight:600;color:var(--ink)}
.specs-row span:last-child{color:var(--ink-soft)}
.specs-head span{color:#fff !important;font-weight:600}

/* ===== buy ===== */
.buy{background:linear-gradient(135deg,var(--cream) 0%,var(--cream-2) 100%)}
.buy-inner{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.buy-text .section-title{text-align:left}
.buy-text .section-sub{text-align:left;margin-bottom:20px}
.buy-dealer{display:inline-block;background:var(--fire-amber);color:var(--ink);padding:8px 18px;border-radius:30px;font-size:14px;font-weight:600;margin-bottom:28px}
.buy-contact h4{font-size:15px;margin-bottom:8px}
.buy-form{background:#fff;padding:32px;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.buy-form h3{font-family:var(--serif);font-size:22px;margin-bottom:20px}
.buy-form input,.buy-form select,.buy-form textarea{width:100%;padding:13px 16px;margin-bottom:14px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:15px;background:var(--cream);transition:.2s}
.buy-form input:focus,.buy-form select:focus,.buy-form textarea:focus{outline:none;border-color:var(--fire-deep);background:#fff}
.buy-form textarea{resize:vertical}
.form-note{margin-top:14px;font-size:14px;color:var(--fire-deep);opacity:0;transition:.3s}
.form-note.show{opacity:1}
.form-note.err{color:#b3261e}
.hp-field{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;overflow:hidden}
.btn-fire.loading{opacity:.6;cursor:wait}

/* ===== footer ===== */
.footer{background:var(--ink);color:#cdbfae;padding:40px 0}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-logo{height:40px;filter:brightness(0) invert(1)}
.footer-brand span{color:#fff;font-size:14px}
.footer-copy,.footer-ph{font-size:13px}

/* ===== reveal animation ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.feature-card.reveal,.product-card.reveal,.exp-item.reveal{transition-delay:var(--d,0s)}

/* ===== responsive ===== */
@media(max-width:960px){
  .feature-grid,.product-room-grid{grid-template-columns:repeat(2,1fr)}
  .exp-grid{grid-template-columns:repeat(2,1fr)}
  .buy-inner{grid-template-columns:1fr;gap:36px}
  .nav-links{display:none}
  .burger{display:flex}
  .hero-content{margin-left:3vw}
}
@media(max-width:560px){
  .section{padding:68px 0}
  .feature-grid,.product-room-grid,.exp-grid{grid-template-columns:1fr}
  .specs-row{grid-template-columns:1fr;gap:4px;padding:14px 18px}
  .hero{min-height:88vh}
  .hero-content{margin:0 auto;padding:0 40px;text-align:center}
  .footer-inner{flex-direction:column;text-align:center}
}

/* ============ WHY OXFORD ============ */
.why { background: #faf7f2; }
.why-compare { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 1.5rem; margin-top: 1.5rem; }
.why-col { background: #fff; border: 1px solid rgba(0,0,0,.08); border-radius: 12px; padding: 1.5rem 1.25rem; }
.why-col-oxford { border: 2px solid #1D9E75; box-shadow: 0 2px 16px rgba(29,158,117,.12); }
.why-badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 4px; margin-bottom: 10px; background: #E1F5EE; color: #0F6E56; }
.why-badge.muted { background: #F1EFE8; color: #5F5E5A; }
.why-col h3 { font-size: 1.05rem; font-weight: 600; margin: 0 0 4px; }
.why-tagline { font-size: 0.82rem; color: #888; margin: 0 0 14px; line-height: 1.5; }
.why-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.why-list li { font-size: 0.88rem; line-height: 1.5; padding-left: 20px; position: relative; color: #3a3a3a; }
.why-col-oxford .why-list li::before { content: "✓"; position: absolute; left: 0; color: #1D9E75; font-weight: 700; }
.why-col-proj .why-list li::before, .why-col-vapor .why-list li::before { content: "!"; position: absolute; left: 4px; color: #D85A30; font-weight: 700; }
@media (max-width: 768px) { .why-compare { grid-template-columns: 1fr; } }

/* ===== Image hover zoom + Lightbox (v4) ===== */
.feature-img { overflow: hidden; }
.feature-img img,
.gallery-cell img {
  transition: transform .35s ease;
  cursor: zoom-in;
}
.feature-img img:hover,
.gallery-cell img:hover {
  transform: scale(1.08);
}

.lightbox {
  position: fixed; inset: 0; z-index: 9999;
  display: none; align-items: center; justify-content: center;
  background: rgba(0,0,0,.88);
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox-img {
  max-width: 90vw; max-height: 85vh;
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  animation: lbFadeIn .25s ease;
}
@keyframes lbFadeIn {
  from { opacity: 0; transform: scale(.92); }
  to   { opacity: 1; transform: scale(1); }
}
.lightbox-close {
  position: absolute; top: 20px; right: 28px;
  background: none; border: none;
  font-size: 42px; color: #fff;
  cursor: pointer; line-height: 1;
  opacity: .7; transition: opacity .2s;
}
.lightbox-close:hover { opacity: 1; }
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.12); border: none;
  color: #fff; font-size: 28px;
  width: 48px; height: 48px; border-radius: 50%;
  cursor: pointer; opacity: .6; transition: opacity .2s,background .2s;
  display: flex; align-items: center; justify-content: center;
}
.lightbox-nav:hover { opacity: 1; background: rgba(255,255,255,.22); }
.lightbox-prev { left: 16px; }
.lightbox-next { right: 16px; }
@media(max-width:768px){
  .lightbox-nav { width: 40px; height: 40px; font-size: 22px; }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}