/* ============================================================
   02 · layout  ——  页头 / 利益条 / 面包屑 / 页脚
   ------------------------------------------------------------
   这四块在六个页面里是同一份代码，改一次全站生效。
   页头尺寸与配色对齐原站：92px 高、#232F3E 深藏青、白字。
   ============================================================ */

/* ---------- 页头 ---------- */
header.site {
  background: var(--nav-bg);
  position: sticky;
  top: 0;
  z-index: 60;
}
.nav {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 4px var(--pad);
  display: flex;
  align-items: center;
  gap: 26px;
}
.logo {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}
.logo img { height: 84px; width: auto; }

.nav-links {
  display: flex;
  gap: 2px;
  margin-right: auto;          /* 把搜索与右侧操作整体推到右边 */
  font-size: 15px;
  font-weight: 500;
}
.nav-links a {
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--nav-ink-2);
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, .09); }

.nav-search { position: relative; width: 240px; flex: 0 1 auto; }
.nav-search input {
  width: 100%;
  padding: 9px 40px 9px 16px;
  border: 1px solid var(--nav-line);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-family: inherit;
  background: rgba(255, 255, 255, .1);
  color: #fff;
  outline: none;
  transition: .15s;
}
.nav-search input::placeholder { color: rgba(255, 255, 255, .55); }
.nav-search input:focus {
  background: rgba(255, 255, 255, .16);
  border-color: rgba(255, 255, 255, .38);
  box-shadow: 0 0 0 3px rgba(69, 149, 199, .28);
}
.nav-search button {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: rgba(255, 255, 255, .7);
  font-size: 13px;
  cursor: pointer;
}
.nav-search button:hover { color: #fff; background: rgba(255, 255, 255, .14); }
.nav-search button svg {
  width: 16px;
  height: 16px;
  margin: 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
}

/* 首页首屏自带搜索框，页头这条就收起来（原站也是这么做的） */
.is-home .nav-search { display: none; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 22px;
  flex: 0 0 auto;
  font-size: 15px;
}
.nav-right a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--nav-ink-2);
  transition: color .15s;
}
.nav-right a:hover { color: #fff; }
.nav-right svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 页头下方的利益条 ---------- */
.benefits { background: var(--benefit-bg); }
.benefits-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 5px var(--pad);
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 0 18px;
  font-size: 15px;
  color: var(--benefit-ink);
}
.benefits-inner span {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
  white-space: nowrap;
}

/* ---------- 购物车按钮（带角标） ---------- */
.cart-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: 1.4;
}
.cart-btn:hover { color: #fff; }
.cart-count[hidden] { display: none !important; }
.cart-count {
  position: absolute;
  top: -8px;
  right: -13px;
  background: #e5484d;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  min-width: 17px;
  height: 17px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* ---------- 面包屑 ---------- */
.crumb {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--pad) 0;
  font-size: 14px;
  color: var(--ink-3);
}
.crumb a { color: var(--ink-2); }
.crumb a:hover { color: var(--brand-2); }
.crumb .sep { margin: 0 6px; color: var(--ink-3); }

/* ---------- 页脚 ---------- */
footer.site {
  background: var(--foot-bg);
  color: var(--foot-ink);
  margin-top: auto;          /* body 是 flex 列：短页面时页脚贴底 */
  padding-top: 46px;
}
.foot-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad) 30px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}
.foot-brand { font-weight: 700; color: #fff; font-size: 19px; margin-bottom: 8px; letter-spacing: -.2px; }
.foot-inner p { font-size: 14px; line-height: 1.6; color: var(--foot-ink-2); }
.foot-inner h4 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 10px; }
.foot-inner a { display: block; font-size: 14px; color: var(--foot-ink-2); padding: 3px 0; }
.foot-inner a:hover { color: #fff; }
.foot-bottom {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--pad) 30px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  color: var(--foot-ink-3);
  flex-wrap: wrap;
}

@media (max-width: 1020px) { .nav-search { width: 180px; } }
@media (max-width: 900px) {
  .nav-search { display: none; }
  .foot-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 780px) {
  .nav { min-height: 64px; gap: 12px; }
  .logo img { height: 46px; }
  .nav-links { display: none; }
  .nav-right { margin-left: auto; gap: 16px; }
  .benefits-inner span:nth-child(n + 3) { display: none; }
}