/* ===== 全站主题（白底 + 黑主色 + 红辅色） ===== */
:root {
  --bg:#ffffff;       /* 页面背景：白 */
  --fg:#111111;       /* 主文字：黑 */
  --muted:#555555;    /* 次级文字：灰 */
  --card:#f9f9f9;     /* 卡片背景：浅灰 */
  --line:#dddddd;     /* 边框线：浅灰 */
  --primary:#e50914;  /* 强调红 */
  --primary-weak:#b40810;

  /* 渐变（红→黑） */
  --grad-red-black: radial-gradient(1200px 300px at 50% -60px, rgba(229,9,20,.35), transparent 60%),
                    linear-gradient(180deg, #e50914 0%, #000000 100%);
}

*{box-sizing:border-box}
html, body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--fg);
  background:var(--bg);
  overflow-y:auto;
}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky; top:0; z-index:1000;
  background:#fff; border-bottom:1px solid var(--line);
}
.nav{
  width:100%;
  padding:0 16px;
  min-height:40px;
  display:flex;
  align-items:center;
  gap:16px;
}
.logo{ position:static; text-decoration:none; flex:0 0 auto; }
.logo img{ height:30px; width:auto; display:block; }

/* 菜单切换按钮（移动端显示，桌面隐藏靠右） */
.menu-toggle{ display:none; margin-left:auto; font-size:22px; line-height:1; background:transparent; border:0; color:var(--fg); cursor:pointer; }

/* 主菜单：居中对齐 */
.menu{
  list-style:none; margin:0; padding:0;
  display:flex; align-items:center; gap:4px;
  flex:1 1 auto; justify-content:center; min-width:0;
}
.menu > li > a, .item-with-toggle > .parent{
  display:block; padding:14px 18px; color:var(--fg); text-decoration:none; border-radius:8px; transition:all .2s; white-space:nowrap;
}
.menu > li > a:hover, .item-with-toggle > .parent:hover{ background:#f5f5f5; color:var(--primary); }
.menu a.is-active{ color:var(--primary); background:#f5f5f5; }

/* 下拉菜单 */
.has-sub{position:relative}
.item-with-toggle{display:flex; align-items:center; gap:4px}
.submenu{
  list-style:none; position:absolute; left:0; top:100%;
  margin:0; padding:8px; min-width:180px;
  background:#fff; border:1px solid var(--line); border-radius:10px; display:none;
}
.submenu li a{display:block; padding:10px 12px; color:var(--fg); text-decoration:none; border-radius:8px}
.submenu li a:hover{background:#f5f5f5; color:var(--primary)}
@media(hover:hover){ .has-sub:hover>.submenu{display:block} }
.sub-toggle{background:transparent; border:0; color:#666; cursor:pointer; padding:10px 8px; border-radius:8px}
.sub-toggle:hover{background:#f5f5f5; color:var(--primary)}

/* ===== 移动端菜单 ===== */
@media(max-width:768px){
  .menu-toggle{display:inline-block}
  .nav{position:relative}
  .menu{
    position:absolute; left:0; right:0; top:100%;
    background:#fff; border-top:1px solid var(--line);
    display:none; flex-direction:column; padding:8px; z-index:999;
  }
  .menu[data-open="true"]{display:flex}
  .menu>li{width:100%}
  .menu>li>a, .item-with-toggle>.parent{ width:100%; padding:14px; border-radius:8px; text-align:center }
  .submenu{ position:static; display:none; margin-top:6px; padding:6px; background:#f9f9f9; border:1px solid var(--line) }
  .submenu.is-open{display:block}
  .logo img{height:25px}
}

/* ===== 内容区 & iframe ===== */
.content{ width:100%; margin:0; padding:0; }
#contentFrame{ display:block; width:100%; border:0; overflow:hidden; min-height:400px; background:#fff; }

/* ===== 底部 ===== */
.site-footer { background-color:#f1f1f1; padding:10px; text-align:center; font-size:14px; color:#333; border-top:1px solid #ddd; }
.site-footer p { margin:0; display:flex; justify-content:center; align-items:center; gap:20px; flex-wrap:wrap; }
.site-footer p span { color:#e50914; }
.site-footer p a { color:#e50914; text-decoration:none; }
.site-footer p a:hover { text-decoration:underline; }

/* ===== 社媒入口（SVG 图标） ===== */
.social-links{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:8px;
  flex:0 0 auto;
}

.social-link{
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:8px;
  text-decoration:none;
  color:var(--fg);
  transition:all .2s ease;
}

.social-link:hover{
  background:#f5f5f5;
  color:var(--primary);
}

.social-link svg{
  width:24px;
  height:24px;
  display:block;
  fill:currentColor;
}

@media(max-width:768px){
  .social-links{
    gap:4px;
    margin-left:4px;
  }

  .social-link{
    width:40px;
    height:40px;
    border-radius:8px;
  }

  .social-link svg{
    width:22px;
    height:22px;
  }
}

/* ===== 购物车 ===== */
.cart-link{
  display:flex; align-items:center; justify-content:center;
  width:44px; height:44px; border-radius:8px; text-decoration:none; color:var(--fg); margin-left:auto;
}
.cart-link:hover{ background:#f5f5f5; color:var(--primary); }
.cart-link svg{ width:24px; height:24px; display:block; fill:currentColor; }
@media(max-width:768px){
  .cart-link{ width:40px; height:40px; }
  .cart-link svg{ width:22px; height:22px; }
}

/* === 语言切换 === */
.lang-switch{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:44px;
  padding:0 8px;
  border-radius:8px;
  color:inherit;
  cursor:pointer;
  position:relative;
  margin-left:8px;
}
.lang-switch:hover{ background:#f5f5f5; color:var(--primary); }
.lang-switch svg{ width:22px; height:22px; display:block; fill:currentColor; }
.lang-current{ font-size:12px; opacity:.9; }

.lang-dropdown{
  position:absolute;
  top:115%;
  right:0;
  min-width:140px;
  padding:6px 0;
  margin:0;
  list-style:none;
  border-radius:10px;
  border:1px solid var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.12);
  background:#fff;
  display:none;
  z-index:9999;
}
.lang-dropdown.open{ display:block; }
.lang-dropdown li{
  padding:10px 14px;
  line-height:1.2;
  cursor:pointer;
  white-space:nowrap;
  font-size:14px;
}
.lang-dropdown li:hover{ background:rgba(0,0,0,.06); }

@media (prefers-color-scheme: dark) {
  .site-header{ background:rgba(21,21,21,.9); border-color:rgba(255,255,255,.08); }
  .menu > li > a, .item-with-toggle > .parent{ color:#e6e6e6; }
  .menu > li > a:hover, .item-with-toggle > .parent:hover{ background:rgba(255,255,255,.08); }
  .submenu{ background:#202124; border-color:rgba(255,255,255,.12); }
  .submenu li a{ color:#e6e6e6; }
  .submenu li a:hover{ background:rgba(255,255,255,.08); }
  .cart-link, .lang-switch, .social-link{ color:#e6e6e6; }
  .cart-link:hover, .lang-switch:hover, .social-link:hover{ background:rgba(255,255,255,.08); color:#fff; }

  .lang-dropdown{ background:#202124; border-color:rgba(255,255,255,.12); box-shadow:0 8px 24px rgba(0,0,0,.5); }
  .lang-dropdown li:hover{ background:rgba(255,255,255,.08); }
}

/* ===== 浮动 WhatsApp 按钮 ===== */
.whatsapp-float{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1200;
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:168px;
  height:56px;
  padding:0 18px 0 12px;
  border-radius:999px;
  background:#25D366;
  color:#fff;
  box-shadow:0 10px 28px rgba(0,0,0,.18);
  text-decoration:none;
  transition:transform .2s ease, box-shadow .2s ease, filter .2s ease;
}

.whatsapp-float:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(0,0,0,.24);
  filter:saturate(1.05);
}

.whatsapp-float:focus-visible{
  outline:3px solid rgba(37,211,102,.28);
  outline-offset:4px;
}

.whatsapp-float__icon{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
}

.whatsapp-float__icon svg{
  width:32px;
  height:32px;
  display:block;
  fill:currentColor;
}

.whatsapp-float__text{
  font-size:18px;
  font-weight:700;
  line-height:1;
  letter-spacing:.2px;
  white-space:nowrap;
}

@media(max-width:768px){
  .whatsapp-float{
    right:16px;
    bottom:16px;
    min-width:150px;
    height:52px;
    padding:0 16px 0 12px;
    gap:8px;
  }

  .whatsapp-float__icon{
    width:32px;
    height:32px;
  }

  .whatsapp-float__icon svg{
    width:28px;
    height:28px;
  }

  .whatsapp-float__text{
    font-size:16px;
  }
}