:root{--c1:#0a0a12;--c2:#12121a;--c3:#1a1a26;--acc:#00d4ff;--acc2:#e040fb;--logo1:#e94560;--logo2:#f5a623;--ok:#00e676;--txt:#e8ecf0;--muted:#7c8ba0;--card:#16161f;--border:rgba(0,212,255,.12);--radius:12px;--shadow:0 4px 24px rgba(0,0,0,.35),0 0 40px rgba(0,212,255,.04);--glow:0 0 20px rgba(0,212,255,.15)}
[data-theme="light"]{--c1:#f5f6f8;--c2:#fff;--c3:#e8eaed;--card:#fff;--txt:#1a1a2e;--muted:#5f6368;--ok:#1a7f37;--acc:#e94560;--acc2:#f5a623;--logo1:#e94560;--logo2:#f5a623;--border:rgba(0,0,0,.12);--shadow:0 4px 24px rgba(0,0,0,.12);--glow:0 4px 20px rgba(0,0,0,.08)}
[data-theme="light"] .lt-product-desc{color:#333}
[data-theme="light"] .lt-store-search-results{box-shadow:0 12px 40px rgba(0,0,0,.15)}
[data-theme="light"] .lt-store-logo-box{box-shadow:0 4px 20px rgba(0,0,0,.08),0 0 0 1px rgba(0,0,0,.06) inset}
[data-theme="light"] .lt-nav-logo-box{box-shadow:0 2px 10px rgba(0,0,0,.08)}
[data-theme="light"] .lt-msg.err{background:rgba(233,69,96,.15);color:#c73652;border:1px solid rgba(233,69,96,.3)}
*{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;background:var(--c1);color:var(--txt);min-height:100vh}
html{-webkit-text-size-adjust:100%;touch-action:manipulation}
body{overflow-x:hidden}
a{color:inherit;text-decoration:none}
/* Nav */
.lt-nav{display:flex;align-items:center;gap:0;padding:0 max(16px,env(safe-area-inset-right)) 0 max(16px,env(safe-area-inset-left));padding-top:env(safe-area-inset-top,0px);background:rgba(10,10,18,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);position:sticky;top:0;z-index:100;border-bottom:1px solid var(--border);min-width:0;box-shadow:0 1px 0 rgba(0,212,255,.06);height:60px;--nav-fade:rgba(10,10,18,.95);-webkit-backface-visibility:hidden;backface-visibility:hidden;transform:translateZ(0)}
[data-theme="light"] .lt-nav{background:rgba(255,255,255,.98);--nav-fade:rgba(255,255,255,.98)}
@media(hover:none){
.lt-nav{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(10,10,18,.98);--nav-fade:rgba(10,10,18,.98)}
[data-theme="light"] .lt-nav{background:rgba(255,255,255,.995);--nav-fade:rgba(255,255,255,.995)}
}
.lt-nav-left{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-width:0;min-height:0;max-height:100%;overflow:hidden;padding-right:8px}
.lt-logo{font-size:1.25rem;font-weight:800;background:linear-gradient(90deg,var(--logo1),var(--logo2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;flex-shrink:0;white-space:nowrap}
/* 限制在導覽列高度內裁切，不變更 --logo-scale；右側 fade 仍用 overflow:visible */
.lt-logo-store{flex-shrink:0;min-width:0;min-height:0;max-width:50%;max-height:100%;overflow:hidden}
.lt-logo-store .lt-nav-brand-text{display:block;min-width:0;white-space:nowrap;line-height:1.15}
.lt-nav-logo-fallback{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;font-size:1.35rem;border-radius:12px;background:var(--c3);border:1px solid var(--border);flex-shrink:0}
.lt-text-fit{display:inline-block;max-width:100%;vertical-align:bottom;box-sizing:border-box}
.lt-store-header .lt-store-name.lt-text-fit{width:100%;padding:0 8px}
/* 右側：彈性空白把按鈕群推到最右；溢出時空白收斂、捲動區由左起顯示（左=優先、右=次要） */
.lt-nav-right-wrap{display:flex;flex-direction:row;align-items:center;position:relative;flex:1;min-width:100px;overflow:visible}
.lt-nav-right-wrap{--fade-op:0}
.lt-nav-actions-spacer{flex:1 1 auto;min-width:0;align-self:stretch}
.lt-nav-right-wrap::after{content:'';position:absolute;right:calc(-1 * max(16px,env(safe-area-inset-right)));top:0;bottom:0;width:calc(40px + max(16px,env(safe-area-inset-right)));pointer-events:none;z-index:2;background:linear-gradient(to right,transparent 0%,var(--nav-fade) 55%,var(--nav-fade) 100%);opacity:var(--fade-op);transition:opacity .2s}
.lt-nav-right-wrap .lt-nav-actions{position:relative;z-index:1}
.lt-nav-fade-hint{position:absolute;right:max(10px,calc(8px + env(safe-area-inset-right)));top:50%;transform:translateY(-50%);z-index:3;pointer-events:none;font-size:1rem;color:var(--muted);opacity:var(--fade-op);transition:opacity .2s}
.lt-nav-fade-hint span{display:inline-block;animation:lt-fade-hint-pulse 2s ease-in-out infinite}
@keyframes lt-fade-hint-pulse{0%,100%{opacity:.5}50%{opacity:1}}
.lt-nav-actions{flex:0 1 auto;min-width:0;max-width:100%;display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;padding:10px 36px 10px 0;-webkit-user-select:none;user-select:none;justify-content:flex-start}
.lt-nav-actions::-webkit-scrollbar{display:none}
.lt-nav-actions>*{flex-shrink:0}
.lt-nav-actions .lt-btn{white-space:nowrap;height:38px;padding:0 16px;font-size:.88rem}
.lt-auth-trigger-wrap{display:flex;align-items:center}
.lt-auth-trigger{padding-left:18px;padding-right:18px}
.lt-auth-modal .lt-auth-tabs{display:flex;gap:0;background:var(--c3);border-radius:10px;padding:4px;margin-bottom:20px}
.lt-auth-modal .lt-auth-tab{flex:1;padding:10px 16px;border:none;background:transparent;color:var(--muted);font-size:.95rem;font-weight:600;border-radius:8px;cursor:pointer;transition:.2s}
.lt-auth-modal .lt-auth-tab.active{background:var(--acc);color:#fff}
.lt-auth-modal .lt-auth-tab:hover:not(.active){color:var(--txt)}
.lt-auth-modal .lt-auth-panel{padding-top:0}
.lt-auth-modal .lt-auth-title{font-size:1.2rem;font-weight:700;margin-bottom:16px}
.lt-auth-store-intro{word-break:break-word}
.lt-theme-toggle{background:var(--c3);border:1px solid var(--border);border-radius:50%;width:38px;height:38px;min-width:38px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--muted);transition:.15s;flex-shrink:0}
.lt-theme-toggle:hover{color:var(--txt);border-color:var(--txt)}
.lt-chat-btn-wrap{position:relative;display:inline-flex;flex-shrink:0}
.lt-chat-bubble{position:absolute;top:-2px;right:-2px;min-width:16px;height:16px;padding:0 4px;font-size:10px;font-weight:700;line-height:16px;text-align:center;background:var(--logo1);color:#fff;border-radius:50%;border:2px solid var(--c1);box-sizing:border-box}
.lt-mention-btn{background:linear-gradient(135deg,rgba(0,212,255,.18),rgba(123,47,247,.18))!important;border-color:rgba(0,212,255,.45)!important;color:var(--acc)!important;font-weight:900!important;font-size:1.15rem!important;font-style:italic}
.lt-mention-btn:hover{background:linear-gradient(135deg,rgba(0,212,255,.32),rgba(123,47,247,.32))!important;border-color:var(--acc)!important}
.lt-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:50px;font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:.2s}
.lt-btn-outline{background:transparent;border:1.5px solid var(--acc);color:var(--acc)}
.lt-btn-outline:hover{background:rgba(0,212,255,.12);color:var(--acc)}
.lt-btn-primary{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;box-shadow:var(--glow)}
.lt-btn-primary:hover{filter:brightness(1.15);box-shadow:0 0 24px rgba(0,212,255,.25)}
.lt-btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}
.lt-btn-ghost:hover{color:var(--acc);border-color:var(--acc)}
/* Hero */
.lt-hero{text-align:center;padding:80px 20px 50px}
.lt-hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;line-height:1.1;margin-bottom:16px}
.lt-hero h1 span{background:linear-gradient(90deg,var(--logo1),var(--logo2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.lt-hero p{color:var(--muted);font-size:1.05rem;margin-bottom:40px}
/* Search */
.lt-search-wrap{max-width:680px;margin:0 auto;position:relative}
.lt-search-wrap form{display:flex;gap:0;background:var(--card);border-radius:50px;border:1.5px solid var(--border);overflow:hidden;box-shadow:var(--shadow)}
.lt-search-wrap form:focus-within{border-color:var(--acc);box-shadow:0 0 0 2px rgba(0,212,255,.2)}
.lt-search-input{flex:1;background:transparent;border:none;outline:none;padding:16px 24px;font-size:1.05rem;color:var(--txt)}
.lt-search-input::placeholder{color:var(--muted)}
.lt-search-btn{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;border:none;padding:14px 28px;font-size:1rem;font-weight:600;cursor:pointer;border-radius:0 50px 50px 0;transition:.2s;box-shadow:var(--glow)}
.lt-search-btn:hover{filter:brightness(1.1)}
.lt-tags{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.lt-tag{padding:5px 14px;border-radius:20px;font-size:.82rem;background:var(--c2);border:1px solid var(--border);color:var(--muted);cursor:pointer;transition:.15s}
.lt-tag:hover{background:var(--c3);color:var(--txt)}
/* Grid */
.lt-section{max-width:1200px;margin:0 auto;padding:40px 20px}
.lt-section-title{font-size:1.3rem;font-weight:700;margin-bottom:24px;display:flex;align-items:center;gap:10px}
.lt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.lt-card{background:var(--card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:.2s;cursor:pointer}
.lt-card:hover{transform:translateY(-3px);border-color:var(--acc);box-shadow:var(--shadow),0 0 30px rgba(0,212,255,.08)}
.lt-card-img{width:100%;aspect-ratio:1;object-fit:cover;background:#08080e;display:block}
.lt-card-img-placeholder{width:100%;aspect-ratio:1;background:linear-gradient(135deg,var(--c2),var(--c3));display:flex;align-items:center;justify-content:center;font-size:2.5rem;color:var(--muted)}
.lt-card-body{padding:14px}
.lt-card-store{font-size:.75rem;color:var(--muted);margin-bottom:4px}
.lt-card-name{font-size:.95rem;font-weight:600;margin-bottom:6px;line-height:1.3}
.lt-card-price{color:var(--acc);font-weight:800;font-size:clamp(.95rem,2vw,1.06rem);display:flex;align-items:baseline;gap:.4em;white-space:nowrap;line-height:1.1}
.lt-card-price-orig{text-decoration:line-through;color:var(--muted);font-size:clamp(.62rem,1.4vw,.76rem);font-weight:600;opacity:.9;flex-shrink:0}
.lt-card-brand{font-size:.76rem;color:var(--muted);margin-top:4px}
/* Product page */
.lt-product{max-width:1100px;margin:0 auto;padding:30px 20px;display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media(max-width:700px){.lt-product{grid-template-columns:1fr}}
.lt-product-gallery{position:relative}
/* 主圖固定 1:1 裁切；下方「商品描述」內嵌圖維持原圖比例（故可能與主圖視覺不同） */
.lt-product-main-img-wrap{width:100%;aspect-ratio:1/1;border-radius:var(--radius);overflow:hidden;background:var(--c2);position:relative}
.lt-product-main-img{width:100%;height:100%;object-fit:cover;display:block;transform-origin:center;transition:transform 0.1s ease-out}
.lt-product-main-placeholder{width:100%;height:100%;min-height:0;display:flex;align-items:center;justify-content:center;font-size:3rem;color:var(--muted)}
.lt-product-thumbs{display:flex;gap:8px;margin-top:10px;overflow-x:auto}
.lt-product-thumb{width:64px;height:64px;object-fit:cover;border-radius:8px;border:2px solid transparent;cursor:pointer;flex-shrink:0}
.lt-product-thumb.active{border-color:var(--acc);box-shadow:0 0 12px rgba(0,212,255,.3)}
.lt-product-info{}
.lt-product-brand{color:var(--muted);font-size:.85rem;margin-bottom:6px}
.lt-product-title{font-size:1.6rem;font-weight:800;line-height:1.2;margin-bottom:10px}
.lt-product-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.lt-product-tag{display:inline-block;padding:3px 10px;border-radius:12px;font-size:.78rem;background:var(--c3);color:var(--txt);border:1px solid var(--border);text-decoration:none;cursor:pointer;transition:opacity .15s,background .15s}
.lt-product-tag:hover{opacity:.92;background:var(--c2)}
.lt-product-price{font-size:clamp(1.32rem,3.4vw,1.9rem);font-weight:900;color:var(--acc);margin-bottom:6px;display:flex;align-items:baseline;gap:.42em;white-space:nowrap;line-height:1.08}
.lt-product-compare{text-decoration:line-through;color:var(--muted);font-size:clamp(.68rem,1.7vw,.92rem);font-weight:600;opacity:.92;flex-shrink:0}
.lt-product-stock{font-size:.85rem;margin-top:8px;color:var(--muted)}
.lt-product-desc{margin-top:20px;color:#ccd;line-height:1.7;font-size:.95rem}
.lt-product-desc img{max-width:100%;width:100%;height:auto;display:block;border-radius:8px;margin:8px 0}
.lt-add-cart{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap}
.lt-qty{display:flex;align-items:center;gap:0;border:1.5px solid var(--border);border-radius:8px;overflow:hidden}
.lt-qty button{background:var(--c2);color:var(--txt);border:none;width:36px;height:42px;font-size:1.2rem;cursor:pointer}
.lt-qty button:hover{background:var(--c3)}
.lt-qty input{width:50px;background:transparent;border:none;text-align:center;color:var(--txt);font-size:1rem;outline:none}
/* 購物車彈窗：數量按鈕 − / + 與移除 ✕ */
.lt-cart-qty-btn:hover,.lt-cart-remove:hover{opacity:.9}
.lt-cart-remove:hover{color:var(--acc2)}
/* Store page */
.lt-store-header{background:var(--c2);padding:30px 20px;text-align:center;border-bottom:1px solid var(--border)}
.lt-store-header-live{padding:16px 12px 20px!important}
.lt-store-header-live .lt-store-live-embed-wrap{max-width:720px;margin:0 auto;width:100%;position:relative}
.lt-store-header-live .lt-store-live-embed-wrap iframe{display:block;width:100%;height:auto;aspect-ratio:16/9;min-height:180px;border-radius:12px;border:none;overflow:hidden}
.lt-store-logo-box{display:inline-flex;align-items:center;justify-content:center;width:88px;height:88px;padding:8px;margin-bottom:12px;border-radius:22px;background:var(--c3);border:1px solid var(--border);box-shadow:0 4px 20px rgba(0,0,0,.12),0 0 0 1px rgba(255,255,255,.04) inset;transition:transform .2s,box-shadow .2s;overflow:hidden}
.lt-store-logo-box:hover{transform:scale(1.03);box-shadow:0 8px 28px rgba(0,0,0,.18),0 0 0 1px rgba(255,255,255,.06) inset}
/* 有框：依比例放大容器，避免高倍率時只在 88px 內裁切 */
.lt-store-logo-box:not(.lt-logo-nobox){width:min(240px,calc(88px * var(--logo-scale,1)));height:min(240px,calc(88px * var(--logo-scale,1)));box-sizing:border-box}
.lt-store-logo-box img,.lt-store-logo{width:100%;height:100%;object-fit:contain;transform:scale(var(--logo-scale,1));transform-origin:center}
.lt-store-logo-box:not(.lt-logo-nobox) img,.lt-store-logo-box:not(.lt-logo-nobox) .lt-store-logo{transform:none}
.lt-store-logo-box.lt-logo-nobox{background:transparent;border:none;box-shadow:none;padding:0;width:calc(88px * var(--logo-scale,1));height:calc(88px * var(--logo-scale,1))}
.lt-store-logo-box.lt-logo-nobox img,.lt-store-logo-box.lt-logo-nobox .lt-store-logo{transform:none}
.lt-store-logo-box.lt-logo-nobox:hover{transform:none;box-shadow:none}
.lt-store-name{font-size:1.5rem;font-weight:800;margin-bottom:6px}
.lt-store-tagline{color:var(--muted);white-space:pre-wrap;word-break:break-word}
.lt-store-pages{display:flex;gap:2px;padding:0 20px;background:var(--c2);border-bottom:1px solid var(--border);overflow-x:auto}
.lt-store-page-tab{padding:12px 18px;font-size:.9rem;cursor:pointer;color:var(--muted);white-space:nowrap;border-bottom:3px solid transparent;transition:.15s}
.lt-store-page-tab.active,.lt-store-page-tab:hover{color:var(--txt);border-bottom-color:var(--acc)}
.lt-page-content-wrap{width:100%;min-height:50vh}
.lt-page-content{max-width:900px;margin:0 auto;padding:30px 20px}
.lt-page-content img{max-width:100%;width:100%;height:auto;display:block;border-radius:8px;margin:8px 0}
/* 有自訂背景／間隙色時：正文色由 index.php inline 依亮度決定（與後台預覽一致） */
.lt-page-content-inner.lt-page-custom-bg a{color:rgba(0,212,255,.9)}
.lt-page-content-inner.lt-page-custom-bg a:hover{color:#00d4ff}
/* Cart */
.lt-cart-btn{position:fixed;bottom:24px;right:24px;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;border:none;border-radius:50px;padding:14px 22px;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:var(--glow),0 4px 20px rgba(0,212,255,.3);z-index:200;display:none;gap:8px;align-items:center}
.lt-cart-btn.show{display:flex}
.lt-cart-count{background:#fff;color:var(--acc);border-radius:50%;width:22px;height:22px;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:800}
/* Modal */
.lt-modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:300;align-items:center;justify-content:center;backdrop-filter:blur(8px)}
.lt-modal-overlay.show{display:flex}
.lt-modal{background:var(--c2);border-radius:var(--radius);padding:32px;max-width:480px;width:calc(100% - 40px);border:1px solid var(--border);box-shadow:var(--shadow),0 0 60px rgba(0,212,255,.06);max-height:90vh;overflow-y:auto}
.lt-modal h2{font-size:1.4rem;font-weight:800;margin-bottom:20px}
.lt-form-row{margin-bottom:16px}
.lt-form-row label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}
.lt-login-label-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}
.lt-login-label-row label{margin-bottom:0}
.lt-login-email-clear{background:none;border:none;color:var(--muted);font-size:1.05rem;line-height:1;cursor:pointer;padding:2px 6px;border-radius:6px;opacity:.55;transition:opacity .15s,background .15s}
.lt-login-email-clear:hover{opacity:1;background:rgba(124,139,160,.12)}
.lt-input-hint{font-size:.8rem;color:var(--muted);margin-top:4px}
.lt-form-row input,.lt-form-row textarea,.lt-form-row select{width:100%;background:var(--c1);border:1.5px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--txt);font-size:16px;outline:none;transition:.15s}
.lt-form-row input:focus,.lt-form-row textarea:focus{border-color:var(--acc);box-shadow:0 0 0 2px rgba(0,212,255,.2)}
.lt-form-row textarea{resize:vertical;min-height:80px}
/* 其餘 input/textarea/select 也設 16px 防 iOS 聚焦縮放 */
input,textarea,select{font-size:16px}
.lt-modal-close{position:absolute;top:12px;right:16px;background:none;border:none;color:var(--muted);font-size:1.4rem;cursor:pointer}
/* 購物車結帳條款：標準模式低調區塊與連結 */
.lt-cart-terms-wrap--standard{padding:8px 10px;background:rgba(124,139,160,.07);border:1px solid rgba(124,139,160,.16);border-radius:8px}
[data-theme="light"] .lt-cart-terms-wrap--standard{background:rgba(95,99,104,.06);border-color:rgba(95,99,104,.12)}
.lt-cart-terms-standard-line{font-size:.8rem;line-height:1.45;color:var(--muted)}
.lt-cart-terms-view-link{color:var(--muted);text-decoration:underline;text-decoration-color:rgba(124,139,160,.4);text-underline-offset:3px;cursor:pointer;transition:color .15s,text-decoration-color .15s}
.lt-cart-terms-view-link:hover{color:var(--txt);text-decoration-color:rgba(124,139,160,.65)}
.lt-cart-terms-strict-row{align-items:flex-start;gap:10px;font-size:.85rem;line-height:1.45;color:var(--muted)}
.lt-cart-terms-strict-row input[type=checkbox]{margin-top:3px;flex-shrink:0;width:18px;height:18px;cursor:pointer;accent-color:var(--acc)}
.lt-cart-terms-strict-row label[for="co-terms-agree"]{cursor:pointer;color:var(--txt)}
.lt-cart-terms-inline-sep{opacity:.55;user-select:none}
.lt-msg{padding:10px 14px;border-radius:8px;font-size:.9rem;margin-bottom:12px}
.lt-msg.ok{background:rgba(0,230,118,.12);color:#00e676;border:1px solid rgba(0,230,118,.25)}
.lt-msg.err{background:rgba(224,64,251,.12);color:#e040fb;border:1px solid rgba(224,64,251,.25)}
/* Footer */
.lt-footer{text-align:center;padding:40px 20px;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border);margin-top:60px}
/* Breadcrumb */
.lt-bc{padding:12px 20px;font-size:.85rem;color:var(--muted);max-width:1200px;margin:0 auto}
.lt-bc a{color:var(--muted)}.lt-bc a:hover{color:var(--txt)}
/* Empty */
.lt-empty{text-align:center;padding:60px 20px;color:var(--muted)}
.lt-empty-icon{font-size:3rem;margin-bottom:16px}
/* 404 */
.lt-404{text-align:center;padding:100px 20px}
.lt-404 h1{font-size:5rem;font-weight:900;color:var(--acc);margin-bottom:16px}
/* Store search: 右側收合按鈕，點擊展開 */
.lt-store-search-wrap{position:relative;display:flex;align-items:center;flex-shrink:0}
.lt-store-search-trigger{flex-shrink:0}
.lt-store-search-bar{display:none;align-items:center;gap:8px;background:var(--c3);border:1.5px solid var(--border);border-radius:30px;padding:6px 12px;height:38px;width:200px;max-width:min(200px,40vw);transition:width .2s,border-color .2s;cursor:text;flex-shrink:0}
.lt-store-search-wrap.lt-store-search-expanded .lt-store-search-trigger{display:none}
.lt-store-search-wrap.lt-store-search-expanded .lt-store-search-bar{display:flex}
.lt-store-search-bar.focused{border-color:var(--acc);background:var(--c2);box-shadow:0 0 0 3px rgba(0,212,255,.18)}
.lt-store-search-icon{font-size:.9rem;color:var(--muted);flex-shrink:0}
.lt-store-search-input{flex:1;background:transparent;border:none;outline:none;color:var(--txt);font-size:15px;min-width:0}
.lt-store-search-input::placeholder{color:var(--muted)}
.lt-store-search-input::-webkit-search-cancel-button,
.lt-store-search-input::-webkit-search-decoration{display:none;appearance:none}
.lt-store-search-results{position:fixed;left:0;top:0;min-width:200px;width:max-content;max-width:min(320px,85vw);background:var(--c2);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.5);z-index:350;max-height:60vh;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-top:40px}
.lt-store-search-results.lt-ssr-results-wide{max-width:min(420px,92vw)}
.lt-ssr-close{position:absolute;top:0;right:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;font-size:28px;line-height:1;color:var(--muted);background:none;border:none;cursor:pointer;border-radius:0 12px 0 0;transition:color .15s,background .15s}
.lt-ssr-close:hover{color:var(--txt);background:var(--c3)}
.lt-ssr-global-sep{padding:10px 14px;font-size:.8rem;color:var(--muted);border-top:1px solid var(--border);background:var(--c1);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:nowrap;min-width:0}
.lt-ssr-global-sep--no-global{justify-content:center;flex-wrap:wrap}
.lt-ssr-pagination{display:flex;align-items:center;gap:6px;flex-shrink:0}
.lt-ssr-pagination--full{flex:1;min-width:0;justify-content:center;flex-wrap:wrap;gap:5px 6px;max-width:100%}
.lt-ssr-page-num-btn{min-width:26px;height:28px;padding:0 5px;display:inline-flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:600;color:var(--txt);background:var(--c2);border:1px solid var(--border);border-radius:6px;cursor:pointer;box-sizing:border-box}
.lt-ssr-page-num-btn:hover:not(.is-active){color:var(--acc);border-color:var(--acc)}
.lt-ssr-page-num-btn.is-active{background:var(--acc);border-color:var(--acc);color:#fff;cursor:default}
.lt-ssr-page-ellipsis{padding:0 2px;color:var(--muted);user-select:none;align-self:center}
.lt-ssr-page-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--muted);background:var(--c2);border:1px solid var(--border);border-radius:6px;cursor:pointer}
.lt-ssr-page-btn:hover:not(:disabled){color:var(--acc);border-color:var(--acc)}
.lt-ssr-page-btn:disabled{opacity:.4;cursor:default}
.lt-ssr-page-num{min-width:24px;text-align:center;font-weight:600;cursor:pointer;user-select:none}
.lt-ssr-page-num:hover{color:var(--acc)}
.lt-ssr-page-picker{position:fixed;z-index:360;background:var(--c2);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.35);display:none;overflow:hidden}
.lt-ssr-page-picker.show{display:block}
.lt-ssr-picker-list{max-height:180px;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:6px}
.lt-ssr-picker-item{display:block;width:100%;padding:8px 14px;text-align:center;background:none;border:none;color:var(--txt);font-size:.95rem;cursor:pointer;border-radius:6px}
.lt-ssr-picker-item:hover{background:var(--c3);color:var(--acc)}
.lt-ssr-global-btn{background:linear-gradient(90deg,var(--acc),var(--acc2));border:none;color:#fff;font-size:.78rem;font-weight:700;padding:6px 14px;border-radius:20px;cursor:pointer;white-space:nowrap;flex-shrink:0}
.lt-nav-logo{width:100%;height:100%;object-fit:contain;transform:scale(var(--logo-scale,1))}
.lt-nav-logo-box{display:inline-flex;align-items:center;justify-content:center;padding:4px;border-radius:12px;background:var(--c3);border:1px solid var(--border);box-shadow:0 2px 10px rgba(0,0,0,.1);transition:transform .15s,box-shadow .15s;flex-shrink:0;overflow:hidden}
/* 有框：容器隨比例放大，圖片不再雙重 scale */
.lt-nav-logo-box:not(.lt-logo-nobox){width:min(120px,calc(40px * var(--logo-scale,1)));height:min(120px,calc(40px * var(--logo-scale,1)));box-sizing:border-box}
.lt-nav-logo-box:not(.lt-logo-nobox) .lt-nav-logo{transform:none}
.lt-nav-logo-box.lt-logo-nobox{background:transparent;border:none;box-shadow:none;padding:0;width:min(120px,calc(40px * var(--logo-scale,1)));height:min(120px,calc(40px * var(--logo-scale,1)))}
.lt-nav-logo-box.lt-logo-nobox .lt-nav-logo{transform:none}
.lt-logo-store:hover .lt-nav-logo-box{transform:scale(1.06);box-shadow:0 4px 14px rgba(0,0,0,.15)}
.lt-logo-store:hover .lt-nav-logo-box.lt-logo-nobox{transform:none;box-shadow:none}
.lt-ssr-item{display:flex;align-items:center;gap:12px;padding:10px 14px;cursor:pointer;text-decoration:none;color:var(--txt);transition:.15s}
.lt-ssr-item:hover{background:var(--c3)}
.lt-ssr-thumb{width:40px;height:40px;border-radius:6px;object-fit:cover;flex-shrink:0;background:var(--c3);display:flex;align-items:center;justify-content:center;font-size:1.2rem}
.lt-ssr-thumb img{width:100%;height:100%;border-radius:6px;object-fit:cover}
.lt-ssr-name{font-size:.88rem;font-weight:600;color:var(--txt)}
.lt-ssr-price{font-size:.8rem;color:var(--acc);margin-top:2px}
.lt-ssr-empty{padding:24px;text-align:center;color:var(--muted);font-size:.88rem}
/* Responsive */
@media(max-width:600px){
  .lt-hero{padding:50px 16px 30px}.lt-hero h1{font-size:1.8rem}
  .lt-nav-left{max-width:70%}
  .lt-nav-logo-box:not(.lt-logo-nobox){width:min(90px,calc(34px * var(--logo-scale,1)))!important;height:min(90px,calc(34px * var(--logo-scale,1)))!important;max-width:none!important;max-height:none!important}
  .lt-nav-logo-box.lt-logo-nobox{width:min(90px,calc(34px * var(--logo-scale,1)))!important;height:min(90px,calc(34px * var(--logo-scale,1)))!important;max-width:none!important;max-height:none!important}
  .lt-logo-store{max-width:38%}
}

/* ── 探索直播牆（#lt-tv；主頁時由 home-snap.css #section-2 覆蓋定位）── */
/* 全螢幕覆蓋層（非主頁三段時後備） */
#lt-tv{position:fixed;inset:0;z-index:1000;background:#000;display:none;flex-direction:column;overflow:hidden}
#lt-tv.active{display:flex}
/* 滑動容器 */
.lt-tv-slides{flex:1;overflow-y:scroll;scroll-snap-type:y mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.lt-tv-slides::-webkit-scrollbar{display:none}
/* 每個直播格 */
.lt-tv-slide{position:relative;height:100vh;height:100dvh;scroll-snap-align:start;scroll-snap-stop:always;overflow:hidden;background:#000;display:flex;align-items:center;justify-content:center}
/* 直播影片區 */
.lt-tv-video-wrap{position:absolute;inset:0;background:#000}
.lt-tv-placeholder{position:absolute;inset:0;width:100%;height:100%}
.lt-tv-video-wrap iframe,.lt-tv-placeholder iframe{position:absolute;inset:0;width:100%;height:100%;border:none;display:block}
/* 頂部導航欄 */
.lt-tv-topbar{position:absolute;top:0;left:0;right:0;z-index:10;display:flex;align-items:center;gap:8px;padding:10px 14px;padding-top:calc(10px + env(safe-area-inset-top,0px));background:linear-gradient(to bottom,rgba(0,0,0,.72) 0%,transparent 100%);backdrop-filter:blur(0px);-webkit-backdrop-filter:blur(0px)}
.lt-tv-back{flex-shrink:0;width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:1.1rem;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.15s;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.lt-tv-back:hover{background:rgba(255,255,255,.28)}
.lt-tv-storename{flex:1;text-align:center;color:#fff;font-weight:800;font-size:.95rem;letter-spacing:.03em;text-shadow:0 1px 8px rgba(0,0,0,.7);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lt-tv-actions{flex-shrink:0;display:flex;gap:8px}
.lt-tv-action-btn{height:34px;padding:0 14px;border-radius:50px;font-size:.77rem;font-weight:700;border:none;cursor:pointer;transition:.15s;text-decoration:none;display:flex;align-items:center;gap:5px;white-space:nowrap}
.lt-tv-btn-store{background:linear-gradient(135deg,rgba(0,212,255,.9),rgba(123,47,247,.9));color:#fff;box-shadow:0 2px 12px rgba(0,212,255,.3)}
.lt-tv-btn-store:hover{filter:brightness(1.2)}
.lt-tv-btn-fb{background:rgba(24,119,242,.85);color:#fff;box-shadow:0 2px 12px rgba(24,119,242,.3)}
.lt-tv-btn-fb:hover{background:rgba(24,119,242,1)}
/* 底部資訊條 */
.lt-tv-bottom{position:absolute;bottom:0;left:0;right:0;z-index:10;padding:14px 18px;padding-bottom:calc(14px + env(safe-area-inset-bottom,0px));background:linear-gradient(to top,rgba(0,0,0,.75) 0%,transparent 100%);display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.lt-tv-live-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(220,0,0,.85);color:#fff;font-size:.72rem;font-weight:800;letter-spacing:.06em;padding:4px 10px;border-radius:50px;flex-shrink:0}
.lt-tv-live-dot{width:7px;height:7px;background:#ff6b6b;border-radius:50%;animation:lt-tv-pulse 1.2s infinite}
@keyframes lt-tv-pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.7)}}
.lt-tv-scroll-hint{color:rgba(255,255,255,.55);font-size:.72rem;display:flex;align-items:center;gap:4px}
/* 載入中畫面 */
.lt-tv-loading{position:absolute;inset:0;background:rgba(0,0,0,.88);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;z-index:20;color:#fff}
.lt-tv-spinner{width:42px;height:42px;border:3px solid rgba(0,212,255,.2);border-top-color:#00d4ff;border-radius:50%;animation:lt-tv-spin .8s linear infinite}
@keyframes lt-tv-spin{to{transform:rotate(360deg)}}
.lt-tv-loading-text{font-size:.9rem;font-weight:600;color:rgba(255,255,255,.75);letter-spacing:.04em}
/* 空狀態 */
.lt-tv-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;height:100dvh;color:#fff;gap:18px}
.lt-tv-empty-icon{font-size:3rem;opacity:.5}
.lt-tv-empty-text{font-size:.95rem;color:rgba(255,255,255,.55);text-align:center;line-height:1.6;max-width:260px}
/* 最後一則後的結束 slide */
.lt-tv-slide-end{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:24px;text-align:center;background:linear-gradient(180deg,#0a0a12 0%,#16162a 100%)}
.lt-tv-slide-end .lt-tv-end-icon{font-size:3.5rem;opacity:.8}
.lt-tv-slide-end .lt-tv-end-text{font-size:1.1rem;color:rgba(255,255,255,.9);line-height:1.6;max-width:280px}
.lt-tv-slide-end .lt-tv-end-btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:50px;background:linear-gradient(135deg,#00d4ff,#7b2ff7);color:#fff;font-size:1rem;font-weight:700;text-decoration:none;border:none;cursor:pointer;box-shadow:0 4px 20px rgba(0,212,255,.35);transition:transform .15s,box-shadow .15s}
.lt-tv-slide-end .lt-tv-end-btn:hover{transform:scale(1.03);box-shadow:0 6px 24px rgba(0,212,255,.45)}
/* 進入動畫 */
@keyframes lt-tv-enter{from{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}
#lt-tv.active{animation:lt-tv-enter .35s cubic-bezier(.22,1,.36,1)}
/* 角落最小化直播（點「進入」後） */
.lt-tv-mini-wrap{position:fixed;bottom:calc(16px + env(safe-area-inset-bottom));right:calc(16px + env(safe-area-inset-right));width:280px;height:158px;z-index:9999;border-radius:12px;overflow:hidden;box-shadow:0 8px 32px rgba(0,0,0,.5);border:2px solid rgba(0,212,255,.35)}
.lt-tv-mini-wrap iframe{width:100%;height:100%;border:none;display:block}
.lt-tv-mini-close{position:absolute;top:6px;right:6px;width:28px;height:28px;border-radius:50%;background:rgba(0,0,0,.75);color:#fff;border:none;font-size:1rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:2;transition:background .15s}
.lt-tv-mini-close:hover{background:rgba(233,69,96,.9)}
/* ── @ 提到 MSN-style ── */
.lt-mention-panel{position:fixed;bottom:72px;right:16px;width:330px;height:490px;background:var(--c1);border:1px solid var(--border);border-radius:18px;box-shadow:0 12px 56px rgba(0,0,0,.55);z-index:500;display:flex;flex-direction:column;overflow:hidden;transition:opacity .18s,transform .18s;transform-origin:bottom right}
.lt-mention-panel.hide{opacity:0;transform:scale(.9) translateY(12px);pointer-events:none}
.lt-mention-header{background:linear-gradient(135deg,#00d4ff 0%,#7b2ff7 100%);padding:13px 15px;display:flex;align-items:center;gap:10px;flex-shrink:0}
.lt-mention-av{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-weight:900;color:#fff;font-size:.95rem;flex-shrink:0;letter-spacing:-.5px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.3)}
.lt-mention-msgs{flex:1;overflow-y:auto;padding:12px 12px 4px;display:flex;flex-direction:column;gap:7px}
.lt-mention-msgs::-webkit-scrollbar{width:4px}.lt-mention-msgs::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}
.lt-mention-row{display:flex;flex-direction:column;max-width:80%}.lt-mention-row.me{align-self:flex-end;align-items:flex-end}.lt-mention-row.them{align-self:flex-start;align-items:flex-start}
.lt-mention-sender{font-size:.7rem;color:var(--muted);margin-bottom:3px;font-weight:700}
.lt-mention-row.me .lt-mention-sender{color:rgba(0,212,255,.8)}
.lt-mention-bubble{padding:9px 14px;border-radius:16px;word-wrap:break-word;white-space:pre-wrap;font-size:.9rem;line-height:1.5}
.lt-mention-row.me .lt-mention-bubble{background:linear-gradient(135deg,#00d4ff,#7b2ff7);color:#fff;border-bottom-right-radius:5px}
.lt-mention-row.them .lt-mention-bubble{background:var(--c3);color:var(--txt);border-bottom-left-radius:5px}
.lt-mention-ts{font-size:.68rem;color:var(--muted);margin-top:3px}
.lt-mention-welcome{margin:0 0 6px;background:rgba(0,212,255,.07);border:1px solid rgba(0,212,255,.18);border-radius:10px;padding:8px 12px;font-size:.82rem;color:var(--acc);text-align:center}
.lt-mention-system{font-size:.78rem;color:var(--muted);text-align:center;padding:2px 0}
.lt-mention-footer{padding:10px 12px 12px;border-top:1px solid var(--border);display:flex;gap:8px;align-items:flex-end;flex-shrink:0}
.lt-mention-input{flex:1;padding:8px 13px;border-radius:20px;border:1px solid var(--border);background:var(--c2);color:var(--txt);resize:none;font-size:.88rem;line-height:1.45;max-height:80px;overflow-y:auto;outline:none;transition:border-color .15s,box-shadow .15s;font-family:inherit}
.lt-mention-input:focus{border-color:var(--acc);box-shadow:0 0 0 2px rgba(0,212,255,.13)}
.lt-mention-send-btn{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#00d4ff,#7b2ff7);border:none;color:#fff;cursor:pointer;font-size:.95rem;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:.15s;box-shadow:0 2px 10px rgba(0,212,255,.25)}
.lt-mention-send-btn:hover{filter:brightness(1.15);box-shadow:0 4px 18px rgba(0,212,255,.4)}
@media(max-width:480px){.lt-mention-panel{right:8px;left:8px;width:auto;bottom:62px;height:430px;border-radius:14px}}
/* App shell & loading */
#lt-app{min-height:100vh;display:flex;flex-direction:column}
.lt-app-main{flex:1}
.lt-pjax-bar{position:fixed;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--acc),var(--acc2));z-index:9999;transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;pointer-events:none}
.lt-pjax-bar.loading{transform:scaleX(0.3);animation:lt-pjax-bar .8s ease-in-out infinite}
@keyframes lt-pjax-bar{0%{transform:scaleX(0.3);transform-origin:left}50%{transform:scaleX(0.7);transform-origin:center}100%{transform:scaleX(0.3);transform-origin:right}}
/* ── 商品分類導覽 ── */
/* ── 分類 Nav ─ 採用 lt-nav-right-wrap 同技術── */
#lt-cat-nav-wrap{position:relative;background:var(--c2);border-bottom:1px solid var(--border);--cat-fade:var(--c2)}
#lt-cat-nav-wrap::after{content:'';position:absolute;right:0;top:0;bottom:0;width:60px;pointer-events:none;z-index:2;background:linear-gradient(to right,transparent 0%,var(--cat-fade) 60%,var(--cat-fade) 100%);opacity:var(--fade-op,0);transition:opacity .2s}
.lt-cat-fade-hint{position:absolute;right:16px;top:50%;transform:translateY(-50%);z-index:3;pointer-events:none;font-size:1.1rem;color:var(--acc3);opacity:var(--fade-op,0);transition:opacity .2s;text-shadow:0 0 8px rgba(0,210,255,.4)}
.lt-cat-fade-hint span{display:inline-block;animation:lt-fade-hint-pulse 2s ease-in-out infinite}
.lt-cat-nav{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;display:flex;align-items:stretch;gap:0;min-height:48px;padding:0 max(16px,env(safe-area-inset-left)) 0 max(16px,env(safe-area-inset-right))}
.lt-cat-nav::-webkit-scrollbar{display:none}
.lt-cat-nav-item{display:flex;align-items:center;padding:0 18px;font-size:.9rem;font-weight:700;cursor:pointer;color:var(--muted);white-space:nowrap;border-bottom:3px solid transparent;transition:all .2s cubic-bezier(.4,0,.2,1);flex-shrink:0;gap:6px;position:relative;text-transform:uppercase;letter-spacing:.03em}
.lt-cat-nav-item::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,210,255,.08),rgba(233,69,96,.08));opacity:0;transition:opacity .2s;border-radius:8px 8px 0 0}
.lt-cat-nav-item:hover{color:var(--txt);transform:translateY(-2px)}
.lt-cat-nav-item:hover::before{opacity:1}
.lt-cat-nav-item.active{color:var(--acc3);border-bottom-color:var(--acc3);background:linear-gradient(135deg,rgba(0,210,255,.12),rgba(233,69,96,.08));box-shadow:0 -2px 12px rgba(0,210,255,.2);transform:translateY(-2px)}
.lt-cat-nav-item.active::before{opacity:0}
.lt-cat-nav-item .lt-cat-arrow{font-size:.7rem;transition:transform .2s;filter:drop-shadow(0 0 4px currentColor)}
.lt-cat-nav-item.open .lt-cat-arrow{transform:rotate(180deg)}
.lt-cat-dropdown{position:fixed;z-index:150;background:var(--c2);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.45);min-width:200px;max-width:280px;padding:8px 0;display:none;overflow:hidden}
.lt-cat-dropdown.show{display:block}
.lt-cat-dropdown-item{display:flex;align-items:center;gap:10px;padding:10px 16px;font-size:.88rem;cursor:pointer;color:var(--txt);transition:.15s}
.lt-cat-dropdown-item:hover{background:var(--c3);color:var(--acc)}
.lt-cat-dropdown-item.active{color:var(--acc);font-weight:700}
.lt-cat-collection-banner{margin:0 max(16px,env(safe-area-inset-left));margin-top:0;display:none;position:relative;overflow:hidden;border-radius:0 0 16px 16px;max-height:min(40vh,320px)}
.lt-cat-collection-banner.show{display:block}
.lt-cat-collection-img{width:100%;height:auto;min-height:120px;max-height:min(40vh,320px);object-fit:cover;object-position:center;display:block}
.lt-cat-collection-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.65) 0%,transparent 60%);display:flex;flex-direction:column;justify-content:flex-end;padding:20px 24px}
.lt-cat-collection-title{font-size:1.4rem;font-weight:900;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.5)}
.lt-cat-collection-text{font-size:.88rem;color:rgba(255,255,255,.85);margin-top:4px;line-height:1.45}
.lt-collection-tab{display:inline-block;padding:6px 14px;margin-right:8px;font-size:.85rem;font-weight:600;cursor:pointer;color:var(--muted);background:var(--c3);border-radius:20px;transition:.15s}
.lt-collection-tab:hover{color:var(--txt);background:var(--border)}
.lt-collection-tab.active{color:var(--acc);background:rgba(233,69,96,.15)}
/* ══ 商品 Filter（advanced accordion + bottom-sheet spring）══ */
.lt-filter-bar{display:flex;align-items:center;gap:8px;padding:8px max(16px,env(safe-area-inset-left)) 4px;max-width:1200px;margin:0 auto}
.lt-filter-bar .lt-filter-pills-row{flex:1;min-width:0}
.lt-filter-bar .lt-grid-density{margin-left:auto}
.lt-filter-trigger{display:inline-flex;align-items:center;gap:7px;padding:7px 16px;background:var(--c3);border:1.5px solid var(--border);border-radius:22px;font-size:.82rem;font-weight:700;color:var(--txt);cursor:pointer;transition:border-color .18s,background .18s,color .18s;white-space:nowrap;flex-shrink:0}
.lt-filter-trigger:hover{border-color:var(--muted)}
.lt-filter-trigger.active{background:rgba(0,210,255,.09);border-color:var(--acc3);color:var(--acc3)}
.lt-filter-badge{background:var(--acc);color:#fff;border-radius:50%;min-width:17px;height:17px;font-size:.68rem;display:inline-flex;align-items:center;justify-content:center;padding:0 3px}
.lt-grid-density{display:flex;align-items:center;gap:6px;background:var(--c3);border:1.5px solid var(--border);border-radius:22px;padding:4px 8px;flex-shrink:0}
.lt-grid-density-btn{width:24px;height:24px;border:none;background:transparent;color:var(--muted);border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.lt-grid-density-btn.active{color:var(--txt)}
.lt-grid-density input[type="range"]{width:56px;accent-color:var(--muted);background:transparent;opacity:.9}
/* Active pills row */
.lt-filter-pills-row{display:flex;flex-wrap:nowrap;gap:6px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.lt-filter-pills-row::-webkit-scrollbar{display:none}
.lt-filter-pill{display:inline-flex;align-items:center;gap:4px;padding:4px 8px 4px 12px;background:rgba(0,210,255,.1);border:1px solid rgba(0,210,255,.28);border-radius:14px;font-size:.75rem;font-weight:600;color:var(--acc3);white-space:nowrap;cursor:pointer;flex-shrink:0;transition:background .15s}
.lt-filter-pill:hover{background:rgba(0,210,255,.2)}
.lt-filter-pill-x{opacity:.6;font-size:.95rem;line-height:1}
/* Overlay */
.lt-filter-overlay{position:fixed;inset:0;background:rgba(0,0,0,.42);z-index:399;opacity:0;pointer-events:none;transition:opacity .26s}
.lt-filter-overlay.show{opacity:1;pointer-events:auto}
/* Panel — desktop sidebar */
.lt-filter-panel{position:fixed;top:0;right:0;bottom:0;width:min(360px,100vw);background:var(--c1);border-left:1px solid var(--border);z-index:400;display:flex;flex-direction:column;transform:translateX(105%);transition:transform .32s cubic-bezier(.4,0,.2,1);box-shadow:-14px 0 60px rgba(0,0,0,.38);will-change:transform}
.lt-filter-panel.open{transform:translateX(0)}
/* Panel — mobile bottom-sheet with spring */
@media(max-width:680px){
  .lt-filter-panel{top:auto;right:0;left:0;width:100%;border-left:none;border-radius:22px 22px 0 0;max-height:88vh;transform:translateY(112%);transition:transform .42s cubic-bezier(.34,1.28,.64,1);box-shadow:0 -18px 64px rgba(0,0,0,.42)}
  .lt-filter-panel.open{transform:translateY(0)}
}
/* Drag handle — mobile only */
.lt-filter-drag-handle{display:none;width:44px;height:5px;background:var(--border);border-radius:3px;margin:14px auto 6px;flex-shrink:0}
@media(max-width:680px){.lt-filter-drag-handle{display:block}}
.lt-filter-panel-head{padding:14px 20px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0;position:sticky;top:0;background:var(--c1);z-index:1}
.lt-filter-panel-title{font-size:1.05rem;font-weight:800;letter-spacing:-.015em}
.lt-filter-head-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}
.lt-filter-close{background:none;border:none;color:var(--muted);font-size:1.15rem;cursor:pointer;padding:6px 10px;border-radius:8px;line-height:1;transition:.15s}
.lt-filter-close:hover{color:var(--txt);background:var(--c3)}
.lt-filter-panel-footer{display:none;align-items:center;gap:12px;padding:14px 20px calc(14px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border);background:var(--c1);box-shadow:0 -4px 24px rgba(0,0,0,.08);flex-shrink:0;z-index:2}
.lt-filter-panel-reset-bottom{flex:1;justify-content:center;padding:13px 0;font-size:.95rem;font-weight:700;border-radius:12px;color:var(--muted);background:var(--c2)}
.lt-filter-panel-done{flex:3;justify-content:center;padding:13px 18px;font-size:.98rem;font-weight:800;border-radius:12px;cursor:pointer;-webkit-tap-highlight-color:transparent;letter-spacing:.02em}
@media(max-width:680px){
  .lt-filter-panel-head{display:none}
  .lt-filter-panel-footer{display:flex}
}
.lt-filter-panel-reset{background:none;border:none;font-size:.78rem;font-weight:700;color:var(--acc);cursor:pointer;padding:4px 8px;border-radius:6px;transition:.15s}
.lt-filter-panel-reset:hover{background:var(--c3)}
.lt-filter-result-count{font-size:.75rem;color:var(--muted);padding:8px 20px 2px;min-height:22px;font-weight:500}
.lt-filter-body{flex:1;overflow-y:auto;padding:4px 0 16px;scrollbar-width:thin}
/* ── Accordion sections ── */
.lt-fs{border-bottom:1px solid var(--border)}
.lt-fs-head{display:flex;align-items:center;justify-content:space-between;padding:15px 20px;cursor:pointer;user-select:none;transition:background .16s}
.lt-fs-head:hover{background:var(--c2)}
.lt-fs-head-left{display:flex;align-items:center;gap:8px}
.lt-fs-label{font-size:.88rem;font-weight:700;color:var(--txt)}
.lt-fs-count{display:inline-flex;align-items:center;justify-content:center;min-width:19px;height:19px;padding:0 5px;background:var(--acc3);color:#fff;border-radius:10px;font-size:.68rem;font-weight:800;opacity:0;transform:scale(.5);transition:opacity .2s,transform .22s cubic-bezier(.34,1.56,.64,1)}
.lt-fs-count.show{opacity:1;transform:scale(1)}
.lt-fs-arrow{color:var(--muted);font-size:.8rem;transition:transform .3s cubic-bezier(.4,0,.2,1);margin-left:4px}
.lt-fs.open>.lt-fs-head .lt-fs-arrow{transform:rotate(180deg)}
/* Grid-based smooth height animation */
.lt-fs-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s cubic-bezier(.4,0,.2,1),opacity .22s ease;opacity:0;overflow:hidden}
.lt-fs-body.open{grid-template-rows:1fr;opacity:1}
.lt-fs-body>div{overflow:hidden}
.lt-fs-inner{padding:4px 20px 18px}
/* Option chips */
.lt-filter-chips-pager{margin-bottom:4px}
.lt-filter-chips-touch{outline:none;border-radius:10px}
.lt-filter-chips-page{display:flex;flex-wrap:wrap;gap:7px;min-height:36px}
.lt-filter-chip-nav{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:8px;padding-top:6px;border-top:1px solid var(--border)}
.lt-filter-chip-nav-btn{width:36px;height:32px;border-radius:8px;border:1px solid var(--border);background:var(--c3);color:var(--txt);font-size:1.1rem;font-weight:700;cursor:pointer;line-height:1;transition:.15s}
.lt-filter-chip-nav-btn:hover:not(:disabled){border-color:var(--acc3);color:var(--acc3)}
.lt-filter-chip-nav-btn:disabled{opacity:.35;cursor:not-allowed}
.lt-filter-chip-nav-meta{font-size:.72rem;color:var(--muted);font-weight:600;min-width:52px;text-align:center}
.lt-filter-chips{display:flex;flex-wrap:wrap;gap:7px}
.lt-filter-chip{padding:6px 14px;border-radius:18px;font-size:.82rem;background:var(--c3);border:1.5px solid var(--border);color:var(--txt);cursor:pointer;transition:border-color .16s,background .16s,color .16s,transform .12s;user-select:none;display:inline-flex;align-items:center;gap:5px;line-height:1.3}
.lt-filter-chip:hover{border-color:var(--muted);transform:translateY(-1px)}
.lt-filter-chip:active{transform:translateY(0)}
.lt-filter-chip.selected{background:rgba(0,210,255,.12);border-color:var(--acc3);color:var(--acc3);font-weight:700}
/* Store product grid density modes */
@media(max-width:700px){
  #store-product-grid.lt-grid-density-1{grid-template-columns:1fr}
  #store-product-grid.lt-grid-density-2{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  #store-product-grid.lt-grid-density-3{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  #store-product-grid.lt-grid-density-3 .lt-card-body{padding:10px}
  #store-product-grid.lt-grid-density-3 .lt-card-name{font-size:.84rem}
  #store-product-grid.lt-grid-density-3 .lt-card-price{font-size:.86rem}
}
@media(min-width:701px){
  #store-product-grid.lt-grid-density-1{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
  #store-product-grid.lt-grid-density-2{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
  #store-product-grid.lt-grid-density-3{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
  #store-product-grid.lt-grid-density-3 .lt-card-body{padding:12px}
  #store-product-grid.lt-grid-density-3 .lt-card-name{font-size:.88rem}
}
/* Price range */
.lt-price-range-wrap{padding:4px 0 8px}
.lt-price-range-track{position:relative;height:6px;border-radius:3px;background:var(--c3);margin:22px 10px 10px;border:1px solid var(--border)}
.lt-price-range-fill{position:absolute;top:0;bottom:0;background:linear-gradient(90deg,var(--acc3),var(--acc));border-radius:3px}
.lt-price-range-thumb{position:absolute;width:22px;height:22px;border-radius:50%;background:var(--c1);border:2.5px solid var(--acc3);top:50%;transform:translate(-50%,-50%);cursor:grab;box-shadow:0 2px 8px rgba(0,0,0,.28);z-index:1;transition:box-shadow .14s}
.lt-price-range-thumb:active{cursor:grabbing;box-shadow:0 4px 16px rgba(0,210,255,.4)}
/* ── 商品屬性選擇（商品頁） ── */
.lt-attr-select-section{margin:16px 0}
.lt-attr-group-label{font-size:.82rem;font-weight:700;color:var(--muted);margin-bottom:8px}
.lt-attr-options-wrap{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.lt-attr-opt-btn{position:relative;display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:8px;border:1.5px solid var(--border);background:var(--c3);cursor:pointer;font-size:.88rem;transition:.15s;user-select:none}
.lt-attr-opt-btn:hover{border-color:var(--muted)}
.lt-attr-opt-btn.selected{border-color:var(--acc3);background:rgba(0,210,255,.1);color:var(--acc3);font-weight:700}
.lt-attr-opt-btn-thumb{width:48px;height:48px;border-radius:8px;object-fit:cover;flex-shrink:0}
.lt-attr-opt-btn .lt-attr-delta{font-size:.72rem;color:var(--ok);margin-left:2px}
.lt-attr-opt-btn .lt-attr-delta.neg{color:var(--acc)}
.lt-attr-opt-btn-disabled,.lt-attr-opt-btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}
.lt-attr-stock-note{font-size:.8rem;color:var(--muted);margin-bottom:8px}