* { margin: 0; padding: 0; box-sizing: border-box; }
img { max-width: 100%; height: auto; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ── Announcement Bar ── */
.announce-bar {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary), var(--announce-bar-third));
    color: #fff; text-align: center; padding: 8px 16px; font-size: 13px; font-weight: 500;
    letter-spacing: .3px;
}
.announce-bar a { color: #fff; text-decoration: underline; }

/* ── Header ── */
.site-header {
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226,232,240,.5);
    position: sticky; top: 0; z-index: 100;
    transition: box-shadow var(--transition), background var(--transition), color var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,.06); }
.header-top { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.header-logo a {
    font-size: 24px; font-weight: 800; color: var(--primary);
    display: flex; align-items: center; gap: 10px;
    letter-spacing: -.5px;
}
.header-logo img { height: 40px; object-fit: contain; }

.header-search { flex: 1; max-width: 480px; position: relative; }
.header-search input {
    width: 100%; padding: 11px 48px 11px 20px;
    border: 2px solid var(--border); border-radius: 50px;
    font-size: 14px; transition: all var(--transition);
    background: var(--bg); font-family: inherit;
}
.header-search input:focus {
    outline: none; border-color: var(--primary);
    background: var(--white); box-shadow: 0 0 0 4px var(--primary-glow);
}
.header-search input::placeholder { color: var(--text-light); }
.header-search button {
    position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
    background: var(--primary); border: none; color: #fff;
    width: 36px; height: 36px; border-radius: 50%; cursor: pointer;
    font-size: 15px; transition: all var(--transition);
    display: flex; align-items: center; justify-content: center;
}
.header-search button:hover { background: var(--primary-dark); transform: translateY(-50%) scale(1.05); }
.header-search svg { width: 16px; height: 16px; }

.header-actions { display: flex; align-items: center; gap: 4px; }
.h-btn {
    color: var(--text-mid); font-size: 13px; display: flex; align-items: center;
    gap: 6px; padding: 8px 14px; border-radius: 10px;
    transition: all var(--transition); white-space: nowrap; font-weight: 500;
    position: relative;
}
.h-btn:hover { background: var(--primary-light); color: var(--primary); }
.h-btn svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.5; }
.h-btn .count {
    position: absolute; top: 0; right: 2px;
    background: var(--danger); color: #fff; font-size: 10px;
    min-width: 18px; height: 18px; border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; border: 2px solid var(--white);
    animation: popIn .3s ease;
}

/* ── Desktop Nav ── */
.header-nav {
    border-top: 1px solid var(--border-light);
}
.nav-list {
    display: flex;
    list-style: none;
    gap: 0;
    flex-wrap: nowrap;
    overflow-x: auto;            /* fallback：JS 未啟動時可橫向 scroll */
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.nav-list::-webkit-scrollbar { display: none; }
/* JS 啟動 overflow logic 後,改為 hidden（用「更多」dropdown 處理超出嘅 items）*/
.nav-list.is-overflow-managed { overflow: hidden; }
/* 「更多」trigger 同 dropdown */
.nav-item-overflow[hidden] { display: none !important; }
/* ⚠️ 必須用 .nav-item-overflow > 前綴提高 specificity(0,2,0):
   下面 .nav-dropdown{left:0} 的權重同樣是 (0,1,0) 而且排在後面,若這裡只寫
   .nav-dropdown-overflow 便會被它蓋過 → left:0 與 right:0 同時生效 →
   width:auto 變成「填滿 containing block(即「更多」那個 li,約 60-80px)」,
   再被 min-width:180px 頂住 → 面板永遠鎖死 180px,不會跟內容伸展,較長的項目
   (例如 USED vacheron constantin)便會超出白色面板。 */
.nav-item-overflow > .nav-dropdown-overflow {
    /* 沿用 .nav-dropdown 既有樣式;對齊向右開（避免出邊界）*/
    right: 0;
    left: auto;
}
/* 進入「更多」dropdown 嘅 nested submenu：向左展開（避免出右邊界）*/
.nav-dropdown-overflow .nav-dropdown,
.nav-dropdown-overflow .nav-flyout,
.nav-dropdown-overflow .nav-sub-dropdown,
.nav-dropdown-overflow .mega-menu {
    left: auto;
    right: 100%;
    top: 0;
}
.nav-list li a {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    color: var(--text-mid);
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition);
    border-bottom: 2.5px solid transparent;
    position: relative;
}
.nav-list li a:hover,
.nav-list li a.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* dropdown 父容器 & 允許 panel 伸出 */
.nav-item,
.nav-subitem {
    position: relative;
}
.header-nav .container {
    position: relative;
    overflow: visible;
}
.header-nav .nav-list {
    position: relative;
    overflow: visible;
}

/* ── Pages dropdown (desktop) ── */
.nav-item.has-children > .nav-link::after {
    content: "â–¾";
    font-size: 10px;
    margin-left: 4px;
}

.nav-dropdown {
    position: absolute;
    top: 100%;                                  /* 修正：移除 +4px 空隙 */
    left: 0;
    min-width: 180px;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(15,23,42,.15);
    padding: 10px 0 6px 0;                      /* 修正：用 padding-top 造視覺間距 */
    list-style: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;                        /* 修正：隱藏時禁止攔截點擊 */
    transform: translateY(0);
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
    z-index: 20;
}
.nav-item.has-children:hover > .nav-dropdown,
.nav-item.has-children.is-open > .nav-dropdown { /* 修正：支援 click-to-open */
    opacity: 1;
    visibility: visible;
    pointer-events: auto;                        /* 修正：顯示時恢復可點擊 */
    transform: translateY(0);
}
.nav-dropdown .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    font-size: 13px;
    color: var(--text-mid);
    border-bottom: none;
    white-space: nowrap;
}
.nav-dropdown .nav-link:hover {
    background: var(--primary-light);
    color: var(--primary);
}
.nav-subitem.has-children > .nav-link::after {
    content: "›";
    font-size: 11px;
    margin-left: 4px;
}

.nav-flyout {
    position: absolute;
    top: -6px;
    left: 100%;
    min-width: 200px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 12px 32px rgba(15,23,42,.18);
    padding: 6px 0 6px 4px;                     /* 修正：加 padding-left 橋接空隙 */
    list-style: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;                        /* 修正：隱藏時禁止攔截點擊 */
    transform: translateX(10px);
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
    z-index: 25;
}
.nav-subitem.has-children:hover > .nav-flyout {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;                        /* 修正：顯示時恢復可點擊 */
    transform: translateX(0);
}
.nav-subitem.has-children:hover > .nav-flyout {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;                        /* 修正：顯示時恢復可點擊 */
    transform: translateX(0);
}

/* ── nav-page-trigger 確保可點擊 ── */
.nav-page-trigger {
    position: relative;
    z-index: 2;
    cursor: pointer;
}

/* ── Hamburger ── */
.hamburger {
    display: none; width: 44px; height: 44px; background: none; border: none;
    cursor: pointer; position: relative; z-index: 201;
    border-radius: 10px; transition: background var(--transition);
}
.hamburger:hover { background: var(--primary-light); }
.hamburger span {
    display: block; width: 20px; height: 2px; background: var(--text);
    position: absolute; left: 12px; transition: all .3s cubic-bezier(.4,0,.2,1);
    border-radius: 2px;
}
.hamburger span:nth-child(1) { top: 14px; }
.hamburger span:nth-child(2) { top: 21px; width: 16px; }
.hamburger span:nth-child(3) { top: 28px; }
.hamburger.active span:nth-child(1) { top: 21px; transform: rotate(45deg); width: 20px; }
.hamburger.active span:nth-child(2) { opacity: 0; transform: translateX(-8px); }
.hamburger.active span:nth-child(3) { top: 21px; transform: rotate(-45deg); width: 20px; }

/* ── Mobile Drawer ── */
.mobile-overlay {
    display: none; position: fixed; inset: 0; background: rgba(15,23,42,.5);
    z-index: 199; opacity: 0; transition: opacity .3s ease;
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.mobile-overlay.show { display: block; opacity: 1; }
.mobile-drawer {
    position: fixed; top: 0; right: -320px; width: 300px; max-width: 85vw;
    height: 100vh; height: 100dvh; background: var(--white); z-index: 200;
    transition: right .35s cubic-bezier(.4,0,.2,1);
    overflow-y: auto; box-shadow: -8px 0 30px rgba(0,0,0,.12);
    display: flex; flex-direction: column;
}
.mobile-drawer.open { right: 0; }
.mobile-drawer-header {
    padding: 20px 20px 16px; border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
}
.mobile-drawer-header .drawer-brand { font-size: 18px; font-weight: 800; color: var(--primary); }
.mobile-close {
    width: 36px; height: 36px; border-radius: 50%; border: none;
    background: var(--bg); cursor: pointer; font-size: 16px;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition); color: var(--text-light);
}
.mobile-close:hover { background: #fee2e2; color: var(--danger); }
.mobile-drawer-search { padding: 12px 20px; }
.mobile-drawer-search input {
    width: 100%; padding: 12px 16px; border: 2px solid var(--border);
    border-radius: var(--radius); font-size: 14px; font-family: inherit;
    transition: all var(--transition); background: var(--bg);
}
.mobile-drawer-search input:focus { outline: none; border-color: var(--primary); background: var(--white); }
.mobile-drawer-nav { flex: 1; padding: 8px 0; }
.mobile-drawer-nav a {
    display: flex; align-items: center; gap: 14px;
    padding: 13px 24px; color: var(--text); font-size: 15px; font-weight: 500;
    transition: all .15s;
}
.mobile-drawer-nav a:hover, .mobile-drawer-nav a:active { background: var(--primary-light); color: var(--primary); }
.mobile-drawer-nav a svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.5; flex-shrink: 0; }
.mobile-drawer-divider { height: 1px; background: var(--border); margin: 8px 20px; }
.mobile-drawer-footer {
    padding: 16px 20px; border-top: 1px solid var(--border);
    font-size: 12px; color: var(--text-light); text-align: center;
}

/* ── Mobile pages accordion ── */
.mobile-page-group { border-top:1px solid var(--border-light); }
.mobile-page-row {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    padding:13px 24px 13px 0;
}
.mobile-page-link {
    display:flex;
    align-items:center;
    gap:14px;
    color:var(--text);
    font-size:14px;
    flex:1;
}
.mobile-page-link svg {
    width:20px;
    height:20px;
    stroke:currentColor;
    fill:none;
}
.mobile-page-toggle {
    border:none;
    background:transparent;
    color:var(--text-light);
    cursor:pointer;
    padding:4px;
    border-radius:999px;
    width:24px;
    height:24px;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:background .2s ease, transform .2s ease;
}
.mobile-page-toggle:hover {
    background:var(--primary-light);
    color:var(--primary);
}
.mobile-page-toggle-icon {
    display:inline-block;
    font-size:12px;
    transition:transform .2s ease;
}
.mobile-page-toggle.is-open .mobile-page-toggle-icon {
    transform:rotate(180deg);
}
.mobile-page-children { display:none; }
.mobile-page-children.is-open { display:block; }

/* ── WhatsApp Float ── */
.whatsapp-float {
    position: fixed; bottom: 24px; right: 24px; z-index: 90;
    width: 56px; height: 56px; border-radius: 50%;
    background: #25d366; color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 16px rgba(37,211,102,.4);
    transition: all var(--transition);
    animation: floatPulse 2s infinite;
}
.whatsapp-float:hover { transform: scale(1.1); color: #fff; box-shadow: 0 6px 24px rgba(37,211,102,.5); }
.whatsapp-float svg { width: 28px; height: 28px; fill: #fff; }
@keyframes floatPulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(37,211,102,.4); }
    50% { box-shadow: 0 4px 24px rgba(37,211,102,.6); }
}

@media (max-width: 768px) {
    .header-search, .header-nav { display: none; }
    .hamburger { display: block; }
    .h-label { display: none; }
    .header-top { height: 60px; }
    .whatsapp-float { bottom: 16px; right: 16px; width: 50px; height: 50px; }
    .whatsapp-float svg { width: 24px; height: 24px; }
}

@keyframes popIn { 0%{transform:scale(0)} 70%{transform:scale(1.2)} 100%{transform:scale(1)} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(24px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
.animate-on-scroll { opacity:0; transform:translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.animate-on-scroll.visible { opacity:1; transform:translateY(0); }
.stagger-1{transition-delay:.05s} .stagger-2{transition-delay:.1s} .stagger-3{transition-delay:.15s}
.stagger-4{transition-delay:.2s} .stagger-5{transition-delay:.25s} .stagger-6{transition-delay:.3s}
.stagger-7{transition-delay:.35s} .stagger-8{transition-delay:.4s}

/* 修正 pages dropdown 定位問題 */
.header-nav .container {
    position: relative;
    overflow: visible;
}
.header-nav .nav-list {
    position: relative;
    overflow: visible;
}
.header-nav .nav-item {
    position: relative;
    display: inline-block;
}
.header-nav .nav-item > .nav-dropdown {
    width: auto;
    max-width: 320px;
}
/* 「更多」面板:right:0 + left:auto 之下用 max-content,面板由右邊界向左伸展,
   剛好包住最長的一項(不會再鎖死在 min-width:180px)。
   必須排在上面那條 (0,3,0) 規則之後,否則它的 width:auto 會蓋過。
   闊度只受視窗限制(不設 320px 硬上限),避免長項目再次超出面板。 */
.header-nav .nav-item-overflow > .nav-dropdown-overflow {
    width: max-content;
    max-width: calc(100vw - 40px);
}
/* JS 是把整個 li.nav-item 由主導覽列搬入面板,它們帶著 .header-nav .nav-item
   的 display:inline-block → 面板的 max-content 會變成所有項目闊度相加,
   一搬入即超出 max-width。改回 block:每項各佔一行,max-content = 最長的一項。 */
.header-nav .nav-item-overflow > .nav-dropdown-overflow > .nav-item {
    display: block;
    width: auto;
}
/* ═══════════════════════════════════════
   Mega Menu — 全部商品
   ═══════════════════════════════════════ */
.nav-item.has-mega {
    position: static;
}

.mega-menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--white);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 24px 0;
    z-index: 1000;
}

.nav-item.has-mega:hover .mega-menu {
    display: block;
}

.mega-menu-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px 32px;
    max-height: 70vh;
    overflow-y: auto;
}

.mega-menu-col {}

.mega-col-title {
    display: block;
    font-weight: 700;
    font-size: 14px;
    color: var(--text);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-light);
}

.mega-col-title:hover {
    color: var(--primary);
}

.mega-col-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mega-col-list li a {
    display: block;
    font-size: 13px;
    color: var(--text-mid);
    padding: 4px 0;
    transition: color var(--transition);
}

.mega-col-list li a:hover {
    color: var(--primary);
}

.mega-menu-footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px 20px 0;
    border-top: 1px solid var(--border-light);
    margin-top: 16px;
    text-align: center;
}

.mega-view-all {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    padding: 8px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.mega-view-all:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* 響應式：窄屏改 3 欄 */
@media (max-width: 1100px) {
    .mega-menu-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
/* 品牌 Mega Menu：因為冇子分類，改用更多欄更密排列 */
.nav-item.has-mega:last-of-type .mega-menu-grid,
.nav-item.has-mega + .nav-item.has-mega .mega-menu-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px 24px;
}

.nav-item.has-mega + .nav-item.has-mega .mega-col-title,
.nav-item.has-mega:last-of-type .mega-col-title {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
    font-weight: 500;
    font-size: 13px;
}
/* ── 子分類向右延展（flyout） ── */
.nav-subitem {
    position: relative;
}

.nav-sub-dropdown {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 200px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 4px 16px rgba(0,0,0,0.10);
    padding: 8px 0;
    z-index: 1001;
    list-style: none;
}

.nav-subitem:hover > .nav-sub-dropdown {
    display: block;
}

.nav-sub-dropdown li a {
    display: block;
    padding: 8px 18px;
    color: var(--text);
    font-size: 13px;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}

.nav-sub-dropdown li a:hover {
    background: var(--bg);
    color: var(--primary);
}

/* 有子分類的項目加箭頭提示 */
.nav-subitem:has(> .nav-sub-dropdown) > a::after {
    content: '›';
    float: right;
    margin-left: 12px;
    color: var(--text-light);
    font-size: 16px;
    line-height: 1;
}

/* 手機版隱藏桌面 mega menu */
@media (max-width: 768px) {
    .mega-menu {
        display: none !important;
    }
}