/* 官网公共样式：只放跨页面复用的顶栏、按钮、容器、底部和基础排版。 */
:root {
  --web-bg: #f5f7fb;
  --web-surface: #ffffff;
  --web-surface-soft: #f8fafc;
  --web-text: #111827;
  --web-muted: #5f6b7a;
  --web-border: #d9e2ef;
  --web-primary: #1464f4;
  --web-primary-dark: #0f4fc4;
  --web-primary-soft: #eaf2ff;
  --web-accent: #00a870;
  --web-shadow-sm: 0 8px 22px rgba(17, 24, 39, 0.08);
  --web-shadow-md: 0 20px 50px rgba(17, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--web-bg);
  color: var(--web-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-page {
  min-height: 100vh;
}

.site-container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background: rgba(255, 255, 255, 0.18);
  border-bottom: 1px solid rgba(255, 255, 255, 0.26);
  backdrop-filter: blur(14px);
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.site-header--scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: rgba(217, 226, 239, 0.9);
  box-shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
}

.site-header__inner {
  width: min(100%, 100% - 0px);
  min-height: 56px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  padding-left: 20px;
}

.site-brand {
  min-width: max-content;
  display: inline-flex;
  align-items: center;
  font-weight: 400;
}

.site-brand__logo {
  display: block;
  width: auto;
  height: 28px;
  object-fit: contain;
}

.site-brand__logo--footer {
  height: 34px;
}

.site-nav {
  min-width: 0;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  color: #0f172a;
  font-size: 14px;
  font-weight: 400;
  transition: color 180ms ease, text-shadow 180ms ease;
}

.site-header--scrolled .site-nav {
  color: #344054;
  text-shadow: none;
}

.site-nav a {
  position: relative;
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--web-primary);
  border-bottom-color: var(--web-primary);
}

.site-nav__hot {
  position: absolute;
  left: calc(100% + 2px);
  top: 8px;
  min-height: 14px;
  display: inline-flex;
  align-items: center;
  border-radius: 2px;
  padding: 0 4px;
  background: #f04438;
  color: #ffffff;
  font-size: 9px;
  font-style: normal;
  line-height: 1;
}

.site-header__actions,
.site-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-header__actions {
  min-height: 56px;
  justify-content: flex-end;
}

.site-search {
  width: 220px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.28);
  color: #475569;
}

.site-header--scrolled .site-search {
  background: #f3f6fb;
}

.site-search__icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  border: 2px solid #344054;
  border-radius: 50%;
}

.site-search__icon::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 2px;
  margin: 10px 0 0 -1px;
  border-radius: 999px;
  background: #344054;
  transform: rotate(45deg);
}

.site-search__label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.site-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: #0f172a;
  font: inherit;
  font-size: 13px;
}

.site-search input::placeholder {
  color: #98a2b3;
}

.site-link,
.site-region {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  color: #0f172a;
  font-size: 14px;
  font-weight: 400;
  white-space: nowrap;
  transition: color 180ms ease, text-shadow 180ms ease;
}

.site-header--scrolled .site-link,
.site-header--scrolled .site-region {
  color: #344054;
  text-shadow: none;
}

.site-link:hover,
.site-region:hover {
  color: var(--web-primary);
}

.site-account {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.site-account--user {
  gap: 10px;
  position: relative;
}

.site-account__name {
  max-width: 150px;
  overflow: hidden;
  color: #0f172a;
  font-size: 14px;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-account-menu {
  position: relative;
}

.site-account__avatar {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-right: 16px;
  border: 2px solid rgba(255, 255, 255, 0.86);
  border-radius: 50%;
  background: linear-gradient(145deg, #c83f75, #a62659);
  color: #ffffff;
  cursor: pointer;
  font-size: 20px;
  font-weight: 500;
  line-height: 1;
  text-align: center;
  box-shadow: 0 6px 16px rgba(166, 38, 89, 0.28);
}

.site-account__avatar-text {
  display: block;
  line-height: 1;
  transform: translateY(-1px);
}

.site-account-menu__panel {
  position: absolute;
  top: 100%;
  right: 0;
  width: 220px;
  min-width: 220px;
  display: grid;
  visibility: hidden;
  opacity: 0;
  gap: 0;
  margin-top: 8px;
  padding: 18px 0 0;
  border: 1px solid rgba(203, 213, 225, 0.78);
  background: rgba(235, 238, 242, 0.96);
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.16);
  transform: translateY(-4px);
  transition: opacity 160ms ease, transform 160ms ease, visibility 0ms linear;
  transition-delay: 0ms, 0ms, 180ms;
}

.site-account-menu__panel::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
}

.site-account-menu:hover .site-account-menu__panel,
.site-account-menu:focus-within .site-account-menu__panel {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0ms;
}

.site-account-menu__item {
  min-height: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 22px;
  color: #475569;
  font-size: 14px;
  font-weight: 400;
}

.site-account-menu__item:hover {
  background: rgba(255, 255, 255, 0.42);
  color: #0f172a;
}

.site-account-menu__item em,
.site-account-menu__badge {
  min-height: 16px;
  display: inline-flex;
  align-items: center;
  border: 1px solid #0b63ff;
  padding: 0 5px;
  color: #0b63ff;
  font-size: 11px;
  font-style: normal;
  line-height: 1;
}

.site-account-menu__badge--verified {
  border-color: #0b63ff;
  color: #0b63ff;
}

.site-account-menu__badge--unverified {
  border-color: #dc2626;
  color: #dc2626;
}

.site-account-menu__badge.site-account-menu__badge--unverified {
  border-color: #dc2626;
  color: #dc2626;
}

.site-account-menu__item--logout {
  min-height: 46px;
  margin-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.72);
}

.site-register {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  background: var(--web-primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color 160ms ease;
}

.site-register:hover {
  background: var(--web-primary-dark);
}

.site-btn {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--web-border);
  border-radius: 6px;
  padding: 8px 14px;
  background: #ffffff;
  color: #1f2937;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.site-btn:hover {
  border-color: #b9c8dd;
  box-shadow: var(--web-shadow-sm);
  transform: translateY(-1px);
}

.site-btn--primary {
  border-color: var(--web-primary);
  background: var(--web-primary);
  color: #ffffff;
}

.site-btn--primary:hover {
  border-color: var(--web-primary-dark);
  background: var(--web-primary-dark);
}

.site-btn--ghost {
  background: var(--web-primary-soft);
  border-color: transparent;
  color: var(--web-primary);
}

.site-header--scrolled .site-btn--ghost {
  background: var(--web-primary-soft);
  border-color: transparent;
  color: var(--web-primary);
}

.site-btn--light {
  background: rgba(255, 255, 255, 0.92);
}

.site-btn--lg {
  min-height: 46px;
  padding: 10px 20px;
  font-size: 15px;
}

.site-footer {
  border-top: 1px solid #d9e2ef;
  background: #f8fafc;
  color: #334155;
}

.site-footer__inner {
  min-height: 180px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  gap: 40px;
  align-items: center;
  padding: 34px 0;
}

.site-footer p {
  max-width: 520px;
  margin: 12px 0 0;
  color: #64748b;
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.site-footer__links a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  color: #1d4ed8;
  font-weight: 400;
}

.site-footer__links a:hover {
  color: #0f172a;
}

@media (max-width: 1280px) {
  .site-header__inner {
    gap: 18px;
  }

  .site-nav {
    gap: 18px;
  }

  .site-search {
    width: 170px;
  }
}

@media (max-width: 1100px) {
  .site-search,
  .site-region {
    display: none;
  }

  .site-nav {
    gap: 16px;
    overflow-x: auto;
  }
}

@media (max-width: 980px) {
  .site-header__inner {
    min-height: auto;
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "brand actions"
      "nav nav";
    padding: 10px 14px 8px;
    align-items: center;
    gap: 8px 18px;
  }

  .site-brand {
    grid-area: brand;
  }

  .site-nav {
    grid-area: nav;
    width: 100%;
    justify-content: flex-start;
    align-self: auto;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .site-nav a {
    min-height: 40px;
  }

  .site-header__actions {
    grid-area: actions;
    min-height: 40px;
    justify-content: flex-end;
  }
}

@media (max-width: 640px) {
  .site-container,
  .site-header__inner {
    width: min(100% - 28px, 1180px);
  }

  .site-header__inner {
    width: 100%;
  }

  .site-brand__logo {
    height: 24px;
  }

  .site-header__actions {
    width: auto;
    gap: 10px;
    justify-content: flex-end;
  }

  .site-link {
    display: inline-flex;
  }

  .site-account {
    gap: 10px;
  }

  .site-register {
    min-height: 38px;
    padding: 0 12px;
  }

  .site-actions {
    flex-wrap: wrap;
  }

  .site-btn {
    min-height: 40px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }
}