/* ==============================
   Design System — Dshow Machinery
   Products Page (产品详情页)
   ============================== */
:root {
  --color:#44993C;
  --color1:var(--color, #5a9a5a);
 
  --bg-gradient: linear-gradient(118deg, var(--color), var(--color1));
  --fontcolor: #000003;
  --summarycolor: #555;
  --font-family: 'Roboto', 'Lato', 'Open Sans', 'Poppins', 'Montserrat', sans-serif;
  --fontbold3: 300; --fontbold4: 400; --fontbold5: 500; --fontbold6: 600; --fontbold7: 700;
  --fontsize12: 12px; --fontsize14: 14px; --fontsize16: 16px; --fontsize18: 18px;
  --fontsize20: 20px; --fontsize22: 22px; --fontsize24: 24px; --fontsize26: 26px;
  --fontsize30: 30px; --fontsize40: 40px;
  --header-height: 140px;
  --max-width: 1700px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: none; -webkit-tap-highlight-color: transparent; }
body { overflow-x: hidden; padding-top: 140px; max-width: 2560px; margin: 0 auto; color: var(--fontcolor); font-size: var(--fontsize16); font-family: var(--fontfamily); line-height: 1.6; }
img { height: auto; max-width: 100%; vertical-align: bottom; }
a { color: inherit; text-decoration: none; }
li, ol, ul { list-style: none; }
button { outline: 0; border: none; cursor: pointer; font-family: inherit; }
h1, h2, h3, h4, h5, h6 { text-transform: capitalize; font-weight: var(--fontbold5); }

.l-wrap { margin: 0 auto; padding: 0 70px; width: 100%; max-width: var(--max-width); }

/* ==============================
   HEADER
   ============================== */
header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; transition: all .3s; }
header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.1); }
.head-top { background: var(--color); }
.head-top-inner { display: flex; justify-content: space-between; align-items: center; height: 40px; }
.head-contact { display: flex; gap: 30px; color: #fff; font-size: var(--fontsize14); }
.head-contact span { display: flex; align-items: center; gap: 6px; }
.head-lang { display: flex; align-items: center; gap: 20px; }
.lang { position: relative; }
.lang-icon { display: flex; align-items: center; gap: 5px; height: 30px; color: #fff; font-size: var(--fontsize14); cursor: pointer; }
.lang-icon span { position: relative; padding-right: 18px; }
.lang-icon span::before, .lang-icon span::after { content: ''; position: absolute; top: 11px; width: 8px; height: 1px; background: #fff; }
.lang-icon span::before { right: 4px; transform: rotate(50deg); }
.lang-icon span::after { right: 0; transform: rotate(-50deg); }
.lang-drop { position: absolute; top: calc(100% + 12px); right: 0; visibility: hidden; opacity: 0; background: #fff; border-radius: 4px; box-shadow: 0 2px 12px rgba(0,0,0,.1); padding: 8px 0; min-width: 140px; transition: all .3s; }
.lang-drop.active { visibility: visible; opacity: 1; }
.lang-item { display: flex; align-items: center; gap: 8px; padding: 8px 16px; color: #333; font-size: 14px; }
.lang-item:hover { background: #f5f5f5; }
.head-search { position: relative; display: flex; align-items: center; }
.search-toggle { background: none; color: #fff; display: flex; align-items: center; }
.search-form { position: absolute; right: 0; top: 100%; display: none; background: #fff; border-radius: 4px; box-shadow: 0 2px 12px rgba(0,0,0,.1); }
.search-form.active { display: flex; }
.search-form input { border: 1px solid #ddd; padding: 8px 12px; width: 200px; border-radius: 4px 0 0 4px; outline: none; }
.search-form button { background: var(--color); color: #fff; padding: 8px 12px; border-radius: 0 4px 4px 0; }
.head-main { background: #fff; }
.head-main-inner { display: flex; justify-content: space-between; align-items: center; height: 100px; }
.logo { display: flex; align-items: center; }
.logo img { max-height: 60px; width: auto; }

/* Nav */
.nav-main > ul { display: flex; gap: 0; }
.nav-main > ul > li { position: relative; }
.nav-main > ul > li > a { display: block; padding: 0 18px; height: 100px; line-height: 100px; font-size: var(--fontsize16); font-weight: var(--fontbold5); color: #191919; white-space: nowrap; transition: color .3s; }
.nav-main > ul > li > a:hover { color: var(--color); }
.nav-main .has-sub { position: relative; }
.nav-main .has-sub > a::after { content: ''; display: inline-block; width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; margin-left: 6px; vertical-align: middle; }
.sub-menu { position: absolute; top: 100%; left: 0; background: #fff; min-width: 200px; box-shadow: 0 5px 20px rgba(0,0,0,.1); visibility: hidden; opacity: 0; transform: translateY(10px); transition: all .3s; }
.nav-main .has-sub:hover .sub-menu { visibility: visible; opacity: 1; transform: translateY(0); }
.sub-menu li a { display: block; padding: 12px 20px; color: #333; font-size: 14px; border-bottom: 1px solid #f0f0f0; transition: all .3s; }
.sub-menu li a:hover { background: var(--color); color: #fff; padding-left: 25px; }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; padding: 10px; }
.menu-toggle span { display: block; width: 25px; height: 2px; background: #191919; transition: all .3s; }

/* ==============================
   BANNER
   ============================== */
.pagesbanner { position: relative; z-index: 1; height: 100%; overflow: hidden; }
.pagesbanner img { width: 100%; min-height: 180px; object-fit: cover; }
.pagesbanner-animate { width: 100%; padding: 0 20px; z-index: 1; position: absolute; top: 45%; left: 50%; transform: translate(-50%, -50%); color: #f3f3f3; text-align: center; opacity: 0; animation: pagesbanner 1s .5s forwards; }
.pagesbanner-animate .p1 { font-size: var(--fontsize30); font-weight: 500; line-height: 1.2; }
.pagesbanner-animate .p2 { margin-top: 20px; font-size: var(--fontsize18); font-weight: 400; }
@keyframes pagesbanner { 0% { margin-top: 20px; opacity: 0; } 100% { margin-top: 0; opacity: 1; } }

/* ==============================
   PRODUCT DETAIL — MAIN LAYOUT
   ============================== */
.prohome-content { clear: both; margin: 0 auto 30px; padding: 0 70px; max-width: var(--max-width); line-height: 1.6; }
.page-main { display: flex; margin-top: 20px; gap: 40px; }
.prodetails-left { flex: 1; min-width: 0; }
.prodetails-sidear { width: 280px; flex-shrink: 0; }

/* Product Top */
.prodetails-top { display: flex; gap: 30px; }
.preview-container { flex-shrink: 0; width: 520px; display: flex; gap: 15px; }
.thumbnails-wrapper { width: 90px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.nav-box { width: 100%; height: 32px; border: 1px solid #ddd; border-radius: 4px; background: #fff; color: #666; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all .3s; }
.nav-box:hover { background: var(--color); border-color: var(--color); color: #fff; }
.nav-box:focus { outline: 2px solid var(--color); outline-offset: 2px; }

/* Thumb Prev/Next Buttons */
.thumb-prev, .thumb-next { width: 100%; height: 32px; border: 1px solid #ddd; border-radius: 4px; background: #fff; cursor: pointer; transition: all .3s; display: flex; align-items: center; justify-content: center; }
.thumb-prev:hover, .thumb-next:hover { background: var(--color); border-color: var(--color); }
.thumb-prev:focus, .thumb-next:focus { outline: 2px solid var(--color); outline-offset: 2px; }

/* Iconfont Arrow Icons */
.iconfont { display: inline-block; width: 16px; height: 16px; position: relative; }
.icon-arrow-up::before, .icon-arrow-down::before { content: ''; position: absolute; left: 50%; top: 50%; width: 8px; height: 8px; border: 2px solid #666; border-right: none; border-bottom: none; transition: border-color .3s; }
.thumb-prev:hover .icon-arrow-up::before, .thumb-next:hover .icon-arrow-down::before { border-color: #fff; }
.icon-arrow-up::before { transform: translate(-50%, -30%) rotate(45deg); }
.icon-arrow-down::before { transform: translate(-50%, -70%) rotate(-135deg); }

.thumbnails { width: 90px; display: flex; flex-direction: column; gap: 8px; }
.thumbnail { width: 90px; height: 90px; border: 2px solid transparent; border-radius: 4px; overflow: hidden; cursor: pointer; transition: all .3s; }
.thumbnail:hover { border-color: var(--color); }
.thumbnail.active { border-color: var(--color); box-shadow: 0 0 0 2px rgba(197, 133, 58, 0.3); }
.thumbnail img { width: 100%; height: 100%; object-fit: cover; }
.main-image { flex: 1; border: 1px solid #eee; border-radius: 4px; overflow: hidden; background: #fff; }
.main-image img { width: 100%; height: 100%; object-fit: contain; min-height: 400px; transition: opacity .2s ease; }
.singglepic img { width: 100%; display: block; border: 1px solid #eee; }
.prodetails-info { flex: 1; min-width: 0; padding-left: 0; }
.prodetails-name { padding: 0 0 30px; color: #191919; font-weight: var(--fontbold7); font-size: var(--fontsize24); }
.pr-line { width: 100%; height: 1px; background: #e1e1e1; }
.pr-text { padding: 10px 0; color: #333; font-weight: var(--fontbold4); font-size: var(--fontsize16); line-height: 1.8; }

/* Share Buttons */
.share-btn-list { display: flex; align-items: center; gap: 6px; padding: 15px 0; }
.share-btn { position: relative; width: 26px; height: 26px; border-radius: 2px; overflow: hidden; transition: transform .4s; background: none; display: flex; align-items: center; justify-content: center; }
.share-btn:hover { transform: translateY(-6px); }
.share-btn.mail { background: #f90; }

/* Action Buttons */
.prodetails-btnlist { display: flex; gap: 15px; padding-top: 10px; }
.pro-btn { display: flex; align-items: center; gap: 8px; padding: 12px 30px; font-size: var(--fontsize16); font-weight: var(--fontbold6); border-radius: 4px; transition: all .3s; }
.pro-btn.send { background: var(--color); color: #fff; }
.pro-btn.send:hover { background: var(--color1); }
.pro-btn.cart { background: #fff; color: var(--color); border: 1px solid var(--color); }
.pro-btn.cart:hover { background: var(--color); color: #fff; }

/* Tabs Content */
.tabs-cont { margin-top: 40px; }
.kche-wrap-width { clear: both; margin: 0 auto; width: 100%; padding: 15px 0; max-width: 1600px; }

/* t213 — Success Case */
.kche-t213-title { text-align: center; margin-bottom: 30px; }
.kche-t213-title h5 { font-size: var(--fontsize26); font-weight: var(--fontbold6); color: var(--fontcolor); }
.kche-t213-text { color: var(--summarycolor); font-size: var(--fontsize14); margin-top: 10px; max-width: 700px; margin-left: auto; margin-right: auto; }
.kche-t213-list { display: flex; flex-wrap: wrap; gap: 20px; justify-content: space-between; padding: 0; }
.kche-t213-item { position: relative; width: calc(25% - 15px); overflow: hidden; border-radius: 4px; }
.kche-t213-item img { width: 100%; display: block; height: auto; object-fit: contain; transition: transform .3s; }
.kche-t213-item:hover img { transform: scale(1.05); }
.kche-t213-box { position: absolute; bottom: 0; left: 0; width: 100%; padding: 20px; background: linear-gradient(transparent, rgba(0,0,0,.7)); color: #fff; }
.kche-t213-box a { position: absolute; right: 15px; top: -20px; width: 40px; height: 40px; background: rgba(255,255,255,.9); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all .3s; }
.kche-t213-box a:hover { background: var(--color); }
.kche-t213-p1 { font-size: var(--fontsize12); opacity: .8; }
.kche-t213-p2 { font-size: var(--fontsize16); font-weight: var(--fontbold6); margin-top: 5px; }

/* t214 — Brand Quality Service */
.kche-t214 h5 { font-size: 26px; font-weight: var(--fontbold6); text-align: center; color: var(--fontcolor); margin-bottom: 10px; }
.kche-t214-des { text-align: center; color: var(--summarycolor); margin-bottom: 40px; }
.kche-t214-list { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; }
.kche-t214-item { width: 22%; text-align: center; }
.kche-t214-item img { width: 220px; height: 220px; object-fit: cover; border-radius: 50%; transition: transform .1s linear; }
.kche-t214-item:hover img { transform: scale(1.02); }
.kche-t214-p1 { color: var(--color); margin-top: 10px; font-size: var(--fontsize14); }
.kche-t214-p2 { font-size: var(--fontsize20); margin-top: 10px; color: var(--fontcolor); }
.kche-t214-p3 { color: var(--summarycolor); font-size: var(--fontsize14); margin-top: 10px; }
.kche-t214-item a { margin-top: 20px; display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 50%; border: 1px solid #dcdcdc; transition: all .1s; }
.kche-t214-item:hover a { border-color: var(--color); background: var(--color); }
.kche-t214-item:hover a svg { stroke: #fff; }

/* t215 — Bathroom Experts */
.kche-t215-flex { display: flex; gap: 40px; align-items: center; }
.kche-t215-left { flex: 1; }
.kche-t215-left h5 { font-size: var(--fontsize26); font-weight: var(--fontbold6); margin-bottom: 10px; color: var(--fontcolor); }
.kche-t215-des { color: var(--summarycolor); margin-bottom: 30px; line-height: 1.8; }
.kche-t215-numlist { display: flex; gap: 30px; padding: 0; }
.kche-t215-li { text-align: center; }
.kche-t215-p1 { font-size: 48px; font-weight: var(--fontbold7); color: var(--color); line-height: 1.1; }
.kche-t215-p1 em { font-style: normal; font-size: 30px; }
.kche-t215-p2 { font-size: var(--fontsize18); color: #191919; margin-top: 8px; font-weight: var(--fontbold6); }
.kche-t215-p3 { font-size: var(--fontsize14); color: var(--summarycolor); margin-top: 4px; }
.kche-t215-more { margin-top: 30px; }
.kche-t215-more a { display: inline-block; padding: 12px 30px; background: var(--color); color: #fff; font-size: var(--fontsize14); border-radius: 4px; transition: all .3s; }
.kche-t215-more a:hover { background: var(--color1); }
.kche-t215-right { flex-shrink: 0; display: flex; gap: 15px; }
.kche-t215-right1 img { width: 300px; height: 300px; object-fit: cover; border-radius: 4px; }
.kche-t215-right2 { display: flex; flex-direction: column; gap: 15px; }
.kche-t215-right2 img { width: 300px; height: 142px; object-fit: cover; border-radius: 4px; }

/* t216 — FAQ */
.kche-t216-icon { text-align: center; color: var(--color); margin-bottom: 15px; font-size: var(--fontsize14); letter-spacing: 2px; }
.kche-t216 h5 { font-size: var(--fontsize26); font-weight: var(--fontbold6); text-align: center; margin-bottom: 10px; color: var(--fontcolor); }
.kche-t216-list { margin-top: 30px; padding: 0; }
.kche-t216-li { display: flex; flex-wrap: wrap; align-items: center; border-top: 1px solid #d9d9d9; padding: 3% 0; color: #6b6460; }
.kche-t216-li:last-child { border-bottom: 1px solid #d9d9d9; }
.kche-t216-left { width: 30%; font-size: var(--fontsize18); color: #333; }
.kche-t216-left img { width: 200px; height: 150px; object-fit: cover; border-radius: 4px; }
.kche-t216-right { flex: 1; padding: 0 20px; font-size: var(--fontsize14); line-height: 1.8; }
.kche-t216-more a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid #dcdcdc; color: var(--color); transition: all .3s; }
.kche-t216-more a:hover { background: var(--color); color: #fff; border-color: var(--color); }
.kche-t216-learn-more { text-align: center; margin-top: 30px; }
.kche-t216-learn-more a { display: inline-flex; align-items: center; gap: 8px; padding: 12px 30px; background: var(--color); color: #fff; font-size: var(--fontsize14); border-radius: 4px; transition: all .3s; }
.kche-t216-learn-more a:hover { background: var(--color1); }

/* t217 — Quality Standard */
.kche-t217-flex { display: flex; gap: 40px; align-items: flex-start; }
.kche-t217-img { position: relative; flex-shrink: 0; width: 300px; }
.kche-t217-img img { width: 100%; border-radius: 4px; }
.kche-t217-img .kche-t217-icon { position: absolute; bottom: 20px; left: 20px; background: rgba(0,0,0,.7); color: #fff; padding: 10px 16px; font-size: 12px; line-height: 1.4; border-radius: 4px; }
.kche-t217-content { flex: 1; }
.kche-t217-list { padding: 0; display: flex; flex-direction: column; gap: 20px; }
.kche-t217-li { display: flex; gap: 15px; align-items: flex-start; }
.kche-t217-icon { flex-shrink: 0; width: 44px; height: 44px; background: #f5f5f5; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--color); }
.kche-t217-title { font-size: var(--fontsize18); font-weight: var(--fontbold6); color: #191919; margin-bottom: 5px; }
.kche-t217-text { color: var(--summarycolor); font-size: var(--fontsize14); line-height: 1.7; }

/* Previous/Next */
.prodetails-faq { margin-top: 40px; }
.faq-box { display: flex; justify-content: space-between; color: var(--summarycolor); font-size: var(--fontsize14); }
.faq-box a { color: var(--color); margin-right: 20px; }

.product-detail-nav { display: flex; gap: 40px; }
.product-detail-nav a { margin-right: 40px; }

/* You Might Also Like */
.prodetails-like { margin-top: 40px; }
.prodetails-like .prodetails-title, #toinquiry .prodetails-title { display: flex; align-items: center; gap: 10px; margin-bottom: 15px; }
.prodetails-title-box { width: 6px; height: 24px; background: var(--color); border-radius: 2px; }
.prodetails-title p { font-size: var(--fontsize20); font-weight: var(--fontbold6); color: #191919; }
.pr-like-line { height: 1px; background: #e1e1e1; margin-bottom: 20px; }

/* Send Inquiry */
#toinquiry { margin-top: 40px; }
.pr-inquiry-line { height: 1px; background: #e1e1e1; margin-bottom: 20px; }
.inquiry-form { display: flex; flex-direction: column; gap: 15px; }
.form-input { padding: 12px 16px; border: 1px solid #ddd; border-radius: 4px; font-size: var(--fontsize16); font-family: inherit; transition: border-color .3s; outline: none; }
.form-input:focus { border-color: var(--color); }
.send-btn { padding: 14px 40px; background: var(--color); color: #fff; font-size: var(--fontsize16); font-weight: var(--fontbold6); border-radius: 4px; transition: all .3s; align-self: flex-start; }
.send-btn:hover { background: var(--color1); }

/* ==============================
   SIDEBAR
   ============================== */
.pr-sidebar-search { display: flex; margin-bottom: 25px; }
.pr-serach-input { flex: 1; }
.pr-serach-input input { width: 100%; padding: 10px 14px; border: 1px solid #ddd; border-radius: 4px 0 0 4px; outline: none; font-size: var(--fontsize14); }
.pr-search-btn { padding: 10px 14px; background: var(--color); color: #fff; border-radius: 0 4px 4px 0; }
.sidebar-category-title { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.category-title-box { width: 5px; height: 20px; background: var(--color); border-radius: 2px; }
.sidebar-category-title p { font-size: var(--fontsize18); font-weight: var(--fontbold6); color: #191919; }
.pr-category-line { height: 1px; background: #e1e1e1; margin-bottom: 12px; }
.pr-sidebar-cate { padding: 0; }
.pr-sidebar-cate .menu-item { border-bottom: 1px solid #f0f0f0; }
.pr-sidebar-cate .menu-item > a { display: block; padding: 12px 0; color: #333; font-size: var(--fontsize14); transition: color .3s; }
.pr-sidebar-cate .menu-item > a:hover { color: var(--color); }
.pr-sidebar-cate .sub-menu { display: none; padding: 0 0 10px 15px; }
.pr-sidebar-cate .sub-menu.open { display: block; }
.pr-sidebar-cate .sub-menu a { display: block; padding: 6px 0; color: var(--summarycolor); font-size: var(--fontsize14); }
.pr-sidebar-cate .sub-menu a:hover { color: var(--color); }
.cate-toggle { float: right; cursor: pointer; color: #999; font-size: var(--fontsize18); transition: transform .3s; padding: 12px; }
.cate-toggle.open { transform: rotate(45deg); }
.pr-sidebar-category, .pr-sidebar-recommended { margin-bottom: 30px; }
.pr-recommended-line { height: 1px; background: #e1e1e1; margin: 12px 0; }
.re-box { display: flex; gap: 15px; align-items: center; }
.re-img { flex-shrink: 0; }
.re-img img { width: 85px; height: 85px; object-fit: cover; border: 1px solid #eee; border-radius: 4px; }
.re-title { font-size: var(--fontsize14); color: #333; }
.re-more { margin-top: 8px; padding: 4px 16px; font-size: var(--fontsize12); color: var(--color); border: 1px solid var(--color); border-radius: 4px; background: #fff; transition: all .3s; }
.re-more:hover { background: var(--color); color: #fff; }

/* ==============================
   INQUIRY POPUP
   ============================== */
.inquiry-popup { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 9999; }
.inquiry-popup.active { display: block; }
.inquiry-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,.5); }
.inquiry-dialog { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: #fff; border-radius: 8px; width: 400px; max-width: 90%; max-height: 90vh; overflow-y: auto; }
.inquiry-top { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid #eee; }
.inquiry-title { font-size: var(--fontsize18); font-weight: var(--fontbold6); color: #191919; }
.inquiry-close { background: none; font-size: 24px; color: #999; padding: 0 4px; }
.inquiry-dialog .inquiry-form { padding: 20px; }
.inquiry-dialog .send-btn { width: 100%; text-align: center; }

/* ==============================
   FOOTER
   ============================== */
footer { background: #1a1a2e; color: #ccc; padding-top: 50px; }
.footer-main { display: flex; gap: 40px; flex-wrap: wrap; }
.foot-item { flex: 1; min-width: 220px; }
.foot-title { color: #fff; font-size: var(--fontsize18); font-weight: var(--fontbold6); margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.foot-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background: var(--color); }
.foot-text { margin-bottom: 15px; font-size: var(--fontsize14); line-height: 1.8; }
.foot-share { margin-top: 15px; }
.foot-share span { display: block; margin-bottom: 10px; }
.foot-share ul { display: flex; gap: 10px; }
.social-icon { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.1); color: #fff; transition: all .3s; }
.social-icon:hover { background: var(--color); transform: translateY(-3px); }
.foot-list li { margin-bottom: 8px; }
.foot-list a { display: flex; align-items: center; gap: 6px; font-size: var(--fontsize14); color: #ccc; transition: color .3s; }
.foot-list a:hover { color: var(--color); }
.foot-contact .foot-list li { display: flex; gap: 8px; font-size: var(--fontsize14); }
.copyright { text-align: center; padding: 20px; margin-top: 40px; border-top: 1px solid rgba(255,255,255,.1); font-size: var(--fontsize12); }

/* Back to Top */
.back-to-top { position: fixed; bottom: 120px; right: 20px; width: 44px; height: 44px; background: var(--color); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all .3s; z-index: 999; }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--color1); transform: translateY(-3px); }

/* Mobile Bottom Nav */
.mobile-bottom-nav { display: none; position: fixed; bottom: 0; left: 0; width: 100%; background: #fff; box-shadow: 0 -2px 10px rgba(0,0,0,.1); z-index: 999; justify-content: space-around; padding: 8px 0; }
.mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; gap: 2px; font-size: 10px; color: #666; }
.mobile-bottom-nav a svg { stroke: #999; }

/* ==============================
   RESPONSIVE
   ============================== */
@media (max-width: 1366px) {
  :root { --header-height: 120px; }
  body { padding-top: 120px; }
  .head-main-inner { height: 80px; }
  .nav-main > ul > li > a { height: 80px; line-height: 80px; font-size: 14px; }
  .kche-t214-item img { width: 170px; height: 170px; }
}

@media (max-width: 1024px) {
  .l-wrap, .prohome-content { padding: 0 15px; }
  .preview-container { width: 100%; }
  .prodetails-top { flex-direction: column; }
  .page-main { flex-direction: column; }
  .prodetails-sidear { width: 100%; margin-top: 30px; }
  .kche-t213-item { width: calc(50% - 10px); }
  .kche-t213-item img { width: 100%; height: auto; aspect-ratio: auto; object-fit: contain; }
  .kche-t214-item { width: 48%; margin-bottom: 20px; }
  .kche-t214-item img { width: 100%; height: auto; }
  .kche-t215-flex { flex-direction: column; }
  .kche-t215-right { flex-direction: row; width: 100%; overflow: hidden; }
  .kche-t215-right1 img { width: 100%; height: auto; }
  .kche-t215-right2 img { width: 100%; height: auto; }
  .kche-t216-left { width: 100%; margin-bottom: 10px; }
  .kche-t217-flex { flex-direction: column; }
  .kche-t217-img { width: 100%; }
  .footer-main { gap: 20px; }
  .foot-item { min-width: 150px; }
}

@media (max-width: 768px) {
  :root { --header-height: 70px; }
  body { padding-top: 70px; }
  .head-top { display: none; }
  .head-main-inner { height: 70px; }
  .menu-toggle { display: flex; z-index: 1001; }
  .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .nav-main { display: none; position: fixed; top: 70px; left: 0; width: 100%; height: calc(100vh - 70px); background: #fff; overflow-y: auto; z-index: 1000; }
  .nav-main.active { display: block; }
  .nav-main > ul { flex-direction: column; }
  .nav-main > ul > li > a { height: auto; line-height: 1.5; padding: 15px 20px; border-bottom: 1px solid #f0f0f0; }
  .sub-menu { position: static; visibility: visible; opacity: 1; transform: none; box-shadow: none; display: none; background: #f9f9f9; }
  .nav-main .has-sub:hover .sub-menu { display: none; }
  .nav-main .has-sub .sub-menu.open { display: block; }

  .pagesbanner-animate .p1 { font-size: var(--fontsize20); }
  .pagesbanner-animate .p2 { font-size: var(--fontsize14); margin-top: 10px; }

  .kche-t213-item { width: 100%; }
  .kche-t214-item { width: 100%; }
  .kche-t214 h5, .kche-t214-des h5, .kche-t213-title h5, .kche-t216 h5 { font-size: 22px !important; }
  .kche-t215-numlist { flex-direction: column; }
  .faq-box { flex-direction: column; gap: 10px; }

  .mobile-bottom-nav { display: flex; }
  .back-to-top { bottom: 80px; }
  footer, footer.footer-main { display: none; }
}

@media (max-width: 500px) {
  .prodetails-btnlist { flex-direction: column; }
  .pro-btn { justify-content: center; }
  .share-btn-list { flex-wrap: wrap; justify-content: center; }
  .inquiry-dialog { width: 95%; }
  .footer-main { flex-direction: column; }
}