/* ============================================
   layout.css — 中科艾灸商城 公共头部 / 底部
   头部：墨绿细顶条 + 宣纸米白品牌行(logo·右侧胶囊搜索·图标账户) + 白底细线导航行(sticky→墨绿毛玻璃)
   底部：墨绿页脚(顶部内嵌承诺条 + 等宽四列) + 居中版权条
   配色：墨绿 #14331F + 艾草绿 #4C7A3C + 麦芒金 #C8A24A + 宣纸米白 #F8F5EC
   类名前缀：az_ （交互 ID 沿用 xy_hd_bar / zh_mb_* / xy_msearch / zh_feedback_btn 不变）
   ============================================ */

.az_hd { position: relative; z-index: 1000; background: var(--az-paper); }

/* ============================================
   ① 顶部细条 —— 墨绿
   ============================================ */
.az_top {
    background: var(--az-dark);
    color: rgba(255,255,255,.70);
    font-size: 12.5px;
}
.az_top_in {
    max-width: 1280px; margin: 0 auto; padding: 0 20px;
    height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.az_top_l { display: flex; align-items: center; min-width: 0; overflow: hidden; flex: 1; }
.az_top_ann {
    display: inline-flex; align-items: center; gap: 8px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: .3px;
}
.az_top_ann i { color: var(--az-gold); font-size: 11px; }

.az_top_r { display: flex; align-items: center; flex-shrink: 0; }
.az_top_r a, .az_top_tel {
    padding: 0 12px; color: rgba(255,255,255,.70);
    position: relative; white-space: nowrap; line-height: 1;
    display: inline-flex; align-items: center; gap: 5px;
}
.az_top_r a + a::before, .az_top_r .az_top_tel + a::before {
    content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 1px; height: 11px; background: rgba(255,255,255,.16);
}
.az_top_r a:hover { color: var(--az-gold-light); }
.az_top_tel strong { color: var(--az-gold-light); font-weight: 600; letter-spacing: .4px; }
.az_top_join { color: var(--az-gold-light) !important; font-weight: 600; }

/* ============================================
   ② 品牌行 —— 宣纸米白（logo + 右侧胶囊搜索 + 图标账户）
   ============================================ */
.az_main { background: var(--az-paper); border-bottom: 1px solid var(--az-line); }
.az_main_in {
    max-width: 1280px; margin: 0 auto; padding: 0 20px;
    height: 88px; display: flex; align-items: center; gap: 26px;
}

.az_burger {
    display: none; width: 38px; height: 38px; border: 1px solid var(--az-line);
    background: #fff; border-radius: var(--az-radius-sm); color: var(--az-dark); font-size: 16px;
}

.az_logo { flex-shrink: 0; display: block; }
.az_logo img { height: 52px; width: auto; object-fit: contain; }

.az_main_sp { flex: 1; }

/* 胶囊搜索 */
.az_search { position: relative; flex-shrink: 0; width: 400px; }
.az_search form {
    display: flex; align-items: center; height: 44px;
    background: #fff; border: 1px solid var(--az-gold); border-radius: 999px;
    padding: 0 5px 0 0; transition: box-shadow .25s, border-color .25s;
}
.az_search form:focus-within { box-shadow: 0 0 0 4px rgba(200,162,74,.14); }
.az_search input {
    flex: 1; min-width: 0; border: none; outline: none; background: transparent;
    height: 100%; padding: 0 8px 0 22px; font-size: 13.5px; color: var(--az-ink);
}
.az_search input::placeholder { color: var(--az-ink-3); }
.az_search button {
    flex-shrink: 0; height: 34px; padding: 0 22px; border: none; border-radius: 999px;
    background: var(--az-grad-gold); color: #fff; font-size: 13.5px; font-weight: 600;
    letter-spacing: 1px; display: inline-flex; align-items: center; gap: 6px;
    transition: filter .2s;
}
.az_search button:hover { filter: brightness(1.06); }
.az_search_hot {
    position: absolute; left: 22px; right: 0; top: 100%; margin-top: 6px;
    font-size: 12px; color: var(--az-ink-3); display: flex; gap: 12px; white-space: nowrap; overflow: hidden;
}
.az_search_hot a { color: var(--az-ink-3); }
.az_search_hot a:hover { color: var(--az-green); }

/* 右侧图标区（图标在上、文字在下） */
.az_main_r { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.az_msearch {
    display: none; width: 38px; height: 38px; border: 1px solid var(--az-line);
    background: #fff; border-radius: var(--az-radius-sm); color: var(--az-dark); font-size: 15px;
}
.az_act {
    width: 68px; padding: 8px 0; border-radius: var(--az-radius);
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    color: var(--az-ink-2); font-size: 12px; position: relative; transition: background .2s, color .2s;
}
.az_act i { font-size: 17px; color: var(--az-green); transition: color .2s; }
.az_act:hover { background: var(--az-green-tint); color: var(--az-green-deep); }
.az_act_cart i { color: var(--az-red); }
.az_cart_badge {
    position: absolute; top: 2px; right: 12px; min-width: 17px; height: 17px; padding: 0 4px;
    background: var(--az-red); color: #fff; border-radius: 999px;
    font-size: 10.5px; font-style: normal; line-height: 17px; text-align: center; font-weight: 600;
}
/* 客服热线小卡 */
.az_hot {
    display: flex; align-items: center; gap: 9px; padding-left: 18px; margin-left: 8px;
    border-left: 1px solid var(--az-line);
}
.az_hot_ic {
    width: 34px; height: 34px; border-radius: 50%; background: var(--az-green-tint);
    color: var(--az-green); display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.az_hot_tx { display: flex; flex-direction: column; line-height: 1.25; }
.az_hot_tx small { font-size: 11px; color: var(--az-ink-3); }
.az_hot_tx strong { font-size: 15px; color: var(--az-dark); letter-spacing: .3px; }

/* ============================================
   ③ 导航行 —— 白底细线，sticky 后转墨绿毛玻璃
   ============================================ */
.az_nav {
    position: sticky; top: 0; z-index: 999;
    background: #fff; border-bottom: 1px solid var(--az-line);
    transition: background .3s, box-shadow .3s, border-color .3s;
}
.az_nav_in {
    max-width: 1280px; margin: 0 auto; padding: 0 20px;
    height: 52px; display: flex; align-items: center; gap: 4px;
}

/* sticky 后滑入的迷你 logo */
.az_nav_mini {
    display: flex; align-items: center; overflow: hidden;
    width: 0; opacity: 0; transform: translateX(-10px);
    transition: width .3s, opacity .3s, transform .3s, margin .3s;
}
.az_nav_mini img { height: 26px; width: auto; }

.az_nav_menu { display: flex; align-items: center; flex: 1; min-width: 0; }
.az_nav_item { position: relative; }
.az_nav_link {
    display: inline-flex; align-items: center; gap: 6px;
    height: 52px; padding: 0 18px; font-size: 14.5px; font-weight: 500;
    color: var(--az-ink); position: relative; white-space: nowrap;
    transition: color .2s;
}
.az_nav_link i.az_nav_ar { font-size: 11px; color: var(--az-ink-3); transition: transform .25s; }
.az_nav_link::after {
    content: ''; position: absolute; left: 50%; bottom: 9px; width: 0; height: 2px;
    background: var(--az-gold); transform: translateX(-50%); transition: width .25s;
}
.az_nav_link:hover, .az_nav_link.active { color: var(--az-green-deep); }
.az_nav_link:hover::after, .az_nav_link.active::after { width: 22px; }
.az_nav_item:hover .az_nav_link i.az_nav_ar { transform: rotate(180deg); }

/* 栏目小卡片下拉 */
.az_drop {
    position: absolute; top: 100%; left: 4px; width: 288px; padding: 16px 18px 14px;
    background: #fff; border: 1px solid var(--az-line); border-top: 2px solid var(--az-gold);
    border-radius: 0 0 var(--az-radius) var(--az-radius); box-shadow: var(--az-shadow-lg);
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: opacity .22s, transform .22s, visibility .22s;
}
.az_nav_item:hover .az_drop { opacity: 1; visibility: visible; transform: translateY(0); }
.az_drop_hd {
    display: flex; align-items: center; gap: 8px; padding-bottom: 10px; margin-bottom: 10px;
    border-bottom: 1px dashed var(--az-line); font-size: 14px; font-weight: 600; color: var(--az-dark);
}
.az_drop_hd i { color: var(--az-green); font-size: 13px; }
.az_drop_subs { display: flex; flex-wrap: wrap; gap: 8px; }
.az_drop_subs a {
    padding: 5px 11px; background: var(--az-paper-2); border-radius: var(--az-radius-sm);
    font-size: 12.5px; color: var(--az-ink-2); transition: background .2s, color .2s;
}
.az_drop_subs a:hover { background: var(--az-green); color: #fff; }
.az_drop_more {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--az-line);
    font-size: 12.5px; color: var(--az-green); font-weight: 600;
}
.az_drop_more i { transition: transform .2s; }
.az_drop_more:hover i { transform: translateX(4px); }

/* 导航右侧金色 CTA */
.az_nav_cta {
    flex-shrink: 0; display: inline-flex; align-items: center; gap: 7px;
    height: 34px; padding: 0 18px; border-radius: 999px;
    border: 1px solid var(--az-gold); color: var(--az-gold-deep);
    font-size: 13.5px; font-weight: 600; background: transparent;
    transition: background .25s, color .25s, box-shadow .25s;
}
.az_nav_cta:hover { background: var(--az-grad-gold); color: #fff; box-shadow: var(--az-shadow-gold); }

/* —— sticky 状态：墨绿毛玻璃 + 迷你 logo 滑入 —— */
.az_nav.is_stuck {
    background: rgba(20,51,31,.94);
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
    border-bottom-color: rgba(200,162,74,.35);
    box-shadow: 0 6px 22px rgba(13,36,21,.22);
}
.az_nav.is_stuck .az_nav_mini { width: auto; opacity: 1; transform: translateX(0); margin-right: 18px; }
.az_nav.is_stuck .az_nav_link { color: rgba(255,255,255,.82); }
.az_nav.is_stuck .az_nav_link:hover,
.az_nav.is_stuck .az_nav_link.active { color: #fff; }
.az_nav.is_stuck .az_nav_link i.az_nav_ar { color: rgba(255,255,255,.5); }
.az_nav.is_stuck .az_nav_cta { border-color: var(--az-gold); color: var(--az-gold-light); }
.az_nav.is_stuck .az_nav_cta:hover { color: #fff; }

/* ============================================
   移动端抽屉 —— 覆盖 app.css：改为右侧滑入 + 双列宫格
   ============================================ */
.zh_mb_drawer { left: auto; right: 0; transform: translateX(100%); background: var(--az-paper); }
.zh_mb_drawer.show { transform: translateX(0); }
.zh_mb_drawer_head {
    background: var(--az-dark); border-bottom: 2px solid var(--az-gold);
    font-family: var(--az-serif);
}
.zh_mb_drawer_search form { border-color: var(--az-gold); border-radius: 999px; }
.zh_mb_drawer_search button { background: var(--az-grad-gold); }
.zh_mb_drawer_section { border-bottom-color: var(--az-line); background: #fff; }
.zh_mb_drawer_section h5 {
    color: var(--az-green-deep); font-weight: 600; letter-spacing: 1px;
    padding: 12px 20px 6px; font-size: 12px;
}
.zh_mb_drawer_section a { color: var(--az-ink); }
.zh_mb_drawer_section a i { color: var(--az-ink-3); }
.zh_mb_drawer_section a:hover { background: var(--az-green-tint); color: var(--az-green-deep); }
/* 双列宫格（栏目 / 账户） */
.zh_mb_drawer_section.az_mb_grid { display: flex; flex-wrap: wrap; padding: 8px 12px 14px; }
.zh_mb_drawer_section.az_mb_grid h5 { width: 100%; padding: 6px 8px 8px; }
.zh_mb_drawer_section.az_mb_grid a {
    width: calc(50% - 8px); margin: 4px; padding: 12px 12px;
    background: var(--az-paper-2); border: 1px solid var(--az-line);
    border-radius: var(--az-radius); font-size: 13px; justify-content: space-between;
}
.zh_mb_drawer_section.az_mb_grid a:hover { background: var(--az-green-tint); border-color: var(--az-sage); }

/* ============================================
   ④ 页脚 —— 墨绿（顶部内嵌承诺条 + 等宽四列）
   ============================================ */
.az_ft {
    background: var(--az-dark); position: relative;
    background-image: radial-gradient(circle at 92% 118%, rgba(200,162,74,.10), transparent 55%);
}
.az_ft::before {
    content: ''; position: absolute; left: 0; right: 0; top: 0; height: 1px;
    background: var(--az-grad-line); opacity: .8;
}

/* 承诺条（内嵌页脚顶部，金色竖线分隔） */
.az_ft_assure { border-bottom: 1px solid rgba(255,255,255,.08); }
.az_ft_assure_in {
    max-width: 1280px; margin: 0 auto; padding: 26px 20px;
    display: grid; grid-template-columns: repeat(4, 1fr);
}
.az_ft_assure_item {
    display: flex; align-items: center; justify-content: center; gap: 12px; position: relative;
}
.az_ft_assure_item + .az_ft_assure_item::before {
    content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 1px; height: 30px; background: linear-gradient(180deg, transparent, rgba(200,162,74,.45), transparent);
}
.az_ft_assure_ic {
    width: 40px; height: 40px; flex-shrink: 0; border-radius: 50%;
    border: 1px solid rgba(200,162,74,.45); color: var(--az-gold-light);
    display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.az_ft_assure_tx { display: flex; flex-direction: column; line-height: 1.4; }
.az_ft_assure_tx strong { color: #fff; font-size: 14.5px; font-weight: 600; }
.az_ft_assure_tx small { color: rgba(255,255,255,.48); font-size: 12px; }

/* 主页脚四列 */
.az_ft_main_in {
    max-width: 1280px; margin: 0 auto; padding: 46px 20px 40px;
    display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.25fr; gap: 44px;
}
.az_ft_brand .az_ft_logo { margin-bottom: 16px; }
.az_ft_brand .az_ft_logo img {
    height: 46px; width: auto;
    filter: brightness(0) invert(1); opacity: .95;
}
.az_ft_desc {
    font-size: 13px; line-height: 2; color: rgba(255,255,255,.52);
    margin-bottom: 20px; text-align: justify;
}
.az_ft_hot {
    display: inline-flex; align-items: center; gap: 12px;
    padding: 11px 20px 11px 14px; border: 1px solid rgba(200,162,74,.40);
    border-radius: var(--az-radius); background: rgba(200,162,74,.07);
}
.az_ft_hot_ic {
    width: 34px; height: 34px; border-radius: 50%; background: var(--az-grad-gold);
    color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.az_ft_hot_tx { display: flex; flex-direction: column; line-height: 1.3; }
.az_ft_hot_tx small { font-size: 11.5px; color: rgba(255,255,255,.48); }
.az_ft_hot_tx strong { font-size: 17px; color: var(--az-gold-light); letter-spacing: .5px; }

.az_ft_col h4 {
    font-size: 15px; color: #fff; font-weight: 600; margin-bottom: 18px;
    padding-bottom: 12px; position: relative; letter-spacing: .5px;
}
.az_ft_col h4::after {
    content: ''; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--az-gold);
}
.az_ft_col ul li { margin-bottom: 11px; }
.az_ft_col ul li a, .az_ft_li {
    display: flex; align-items: flex-start; gap: 8px;
    font-size: 13px; color: rgba(255,255,255,.52); line-height: 1.65;
    transition: color .2s, transform .2s;
}
.az_ft_col ul li a i, .az_ft_li i {
    font-size: 11px; color: rgba(200,162,74,.65); margin-top: 5px; flex-shrink: 0;
}
.az_ft_col ul li a:hover { color: var(--az-gold-light); transform: translateX(3px); }

/* 版权条 —— 居中单行 */
.az_ft_copy { background: var(--az-dark-deep); border-top: 1px solid rgba(255,255,255,.06); }
.az_ft_copy_in {
    max-width: 1280px; margin: 0 auto; padding: 16px 20px;
    display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px 22px;
    font-size: 12.5px; color: rgba(255,255,255,.40); text-align: center;
}
.az_ft_copy_in a { color: rgba(255,255,255,.40); }
.az_ft_copy_in a:hover { color: var(--az-gold-light); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1200px) {
    .az_search { width: 320px; }
    .az_ft_main_in { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 30px; }
}

@media (max-width: 1024px) {
    .az_hot { display: none; }
    .az_search { width: 280px; }
    .az_nav_link { padding: 0 13px; font-size: 14px; }
    .az_ft_main_in { grid-template-columns: 1fr 1fr; gap: 30px 36px; }
    .az_ft_brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
    .az_nav { display: none; }
    .az_burger { display: flex; align-items: center; justify-content: center; }
    .az_main_in { height: 64px; gap: 14px; }
    .az_logo img { height: 38px; }
    .az_search { display: none; }
    .az_main_sp { flex: 1; }
    .az_msearch { display: flex; align-items: center; justify-content: center; }
    .az_act { width: 52px; padding: 6px 0; font-size: 11px; }
    .az_act i { font-size: 16px; }
    .az_cart_badge { right: 5px; }
    .az_top_r a:not(.az_top_join) { display: none; }
    .az_top_tel { display: none; }
    .az_ft_assure_in { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
    .az_ft_assure_item:nth-child(3)::before { display: none; }
}

@media (max-width: 640px) {
    /* 品牌行紧凑排布，避免窄屏横向溢出 */
    .az_main_in { height: 58px; gap: 8px; padding: 0 14px; }
    .az_logo img { height: 32px; }
    .az_burger, .az_msearch { width: 34px; height: 34px; font-size: 14px; }
    .az_act { width: 36px; padding: 6px 0; }
    .az_act span { display: none; }
    .az_act i { font-size: 16px; }
    .az_cart_badge { top: -1px; right: -1px; }
    .az_top_in { height: 32px; font-size: 11.5px; padding: 0 14px; }
    .az_ft_main_in { grid-template-columns: 1fr; padding: 34px 20px 30px; gap: 26px; }
    .az_ft_assure_in { padding: 20px; }
    .az_ft_assure_item { justify-content: flex-start; gap: 10px; }
    .az_ft_assure_item::before { display: none !important; }
    .az_ft_assure_ic { width: 34px; height: 34px; font-size: 13px; }
    .az_ft_assure_tx strong { font-size: 13.5px; }
    .az_ft_assure_tx small { font-size: 11px; }
    .az_ft_copy_in { flex-direction: column; gap: 6px; }
}