/* ============================================================
   蛋雕之家 · 全站公共样式（方案B 暖米艺术）
   色板 token 只在这里定义一次；各页专属样式写在该页的 <style> 里，
   不要为了单个页面改这里的通用组件。
   ============================================================ */

:root {
  /* 基础色板 */
  --bg: #faf5ec;
  --card: #fffdf8;
  --ink: #33261b;
  --mut: #8a7963;
  --pri: #b4552d;
  --pri-dark: #9a4824;
  --pri-soft: #f6e4d3;
  --acc: #d9a05b;
  --cool: #5b7c99;
  --cool-soft: #e4edf3;
  --line: #eae0d0;
  --line-soft: #f0ddc6;

  /* 尺寸与字体 */
  --radius: 18px;
  --nav-h: 64px;
  --serif: Georgia, "Songti SC", "SimSun", serif;
  --sans: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--pri);
  outline-offset: 2px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------- 顶部导航 ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 245, 236, .94);
  border-bottom: 1px solid var(--line);
}

@supports (backdrop-filter: blur(8px)) {
  .site-header { backdrop-filter: blur(8px); }
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 12px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .5px;
  flex: none;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--pri);
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
}

.logo-mark svg { width: 20px; height: 20px; }

.nav-links {
  display: none;
  gap: 2px;
  align-items: center;
}

.nav-links > a,
.nav-parent {
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--mut);
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.nav-links > a:hover,
.nav-parent:hover,
.nav-item.open .nav-parent,
.nav-links > a[aria-current="page"] {
  background: var(--pri-soft);
  color: var(--pri);
}

.nav-parent::after {
  content: "";
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  margin-top: 2px;
}

.nav-item { position: relative; }

/* 下拉面板与按钮之间留了 8px 视觉空隙，鼠标穿过时 :hover 会断掉、面板先消失，
   导致「还没摸到菜单它就收了」。用一块透明伪元素把这段空隙补上（左右各放大
   一点，斜着往下移也接得住），视觉不变，悬停不断。 */
.nav-item::after {
  content: "";
  position: absolute;
  left: -14px;
  right: -14px;
  top: 100%;
  height: 10px;
}

.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 210px;
  padding: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(51, 38, 27, .09);
}

.nav-item:hover .dropdown,
.nav-item.open .dropdown { display: block; }

.dropdown a {
  display: block;
  padding: 9px 13px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--mut);
  white-space: nowrap;
}

.dropdown a:hover { background: var(--pri-soft); color: var(--pri); }

/* 当前页高亮：桌面端子菜单与移动端菜单共用 */
.dropdown a[aria-current="page"] {
  background: var(--pri-soft);
  color: var(--pri);
  font-weight: 600;
}

.nav-cta {
  display: none;
  align-items: center;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--pri);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.nav-cta:hover { background: var(--pri-dark); }

/* 移动端菜单 */
.burger {
  width: 42px;
  height: 42px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.burger i { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; }

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 8px 20px 16px;
  border-top: 1px solid var(--line);
  background: var(--card);
}

.mobile-menu.open { display: flex; }

.m-link {
  padding: 13px 4px;
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.m-link:last-child { border-bottom: none; }
.m-link[aria-current="page"] { color: var(--pri); }
.m-sub a[aria-current="page"] { color: var(--pri); font-weight: 600; }
.m-link:active { color: var(--pri); }

.m-sub { padding: 2px 0 10px 14px; border-bottom: 1px solid var(--line); }

.m-sub a {
  display: block;
  padding: 10px 4px;
  font-size: 14px;
  color: var(--mut);
}

@media (min-width: 900px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .burger { display: none; }
  .mobile-menu { display: none !important; }
}

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  min-height: 44px;
  border: none;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .16s ease, border-color .16s ease, color .16s ease;
}

.btn-pri { background: var(--pri); color: #fff; }
.btn-pri:hover { background: var(--pri-dark); }
.btn-ghost { background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--pri); color: var(--pri); }

/* ---------------- 页脚 ---------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 28px;
  margin-top: 24px;
}

.foot-grid {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.foot-brand .logo { margin-bottom: 12px; }

.foot-brand p {
  font-size: 13.5px;
  color: var(--mut);
  max-width: 340px;
}

.foot-col h4 {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 10px;
}

.foot-col p,
.foot-col a {
  display: block;
  font-size: 13.5px;
  color: var(--mut);
  padding: 3px 0;
}

.foot-col a:hover { color: var(--pri); }

.foot-contact {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
}

.foot-bottom {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12.5px;
  color: #a08d74;
}

/* 页脚备案号：按工信部要求链到备案系统，颜色跟页脚一致，别跳出一个蓝链接 */
.foot-bottom a { color: inherit; text-decoration: none; }
.foot-bottom a:hover { color: var(--pri); text-decoration: underline; }

@media (min-width: 760px) {
  .foot-grid { flex-direction: row; justify-content: space-between; gap: 40px; }
  .foot-bottom { flex-direction: row; justify-content: space-between; }
}

/* ---------------- 轻提示 ---------------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  max-width: min(92vw, 420px);
  padding: 11px 20px;
  border-radius: 12px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
  z-index: 99;
}

.toast.show { opacity: 1; }

/* ---------------- 动效降级 ---------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .toast { transition: none; }
}