/* 版本二：公益组织风格头部。大横幅 + 通栏导航条
   仅在 <body class="v2"> 的页面生效，依赖 tokens.css 与 base.css */

/* ============ 顶部横幅（随页面滚走） ============ */
.banner {
  position: relative;
  overflow: hidden;
  text-align: center;
  color: var(--primary-dark);
  background:
    radial-gradient(ellipse at 18% 110%, rgba(var(--accent-rgb), 0.38) 0%, rgba(var(--accent-rgb), 0) 55%),
    radial-gradient(ellipse at 85% -10%, rgba(var(--primary-bright-rgb), 0.28) 0%, rgba(var(--primary-bright-rgb), 0) 55%),
    linear-gradient(180deg, var(--primary-wash-2) 0%, var(--rose-wash) 55%, var(--accent-wash-2) 100%);
}

.banner-deco {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.banner-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 22px var(--gutter) 24px;
}

/* 标识位：客户提供正式 logo 后替换这里的 <svg> 或改为 <img> */
.banner-emblem {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 6px 18px rgba(var(--primary-dark-rgb), 0.18);
}

.banner-emblem svg {
  width: 38px;
  height: 38px;
}

.banner-org {
  margin-top: 12px;
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--accent-dark);
}

.banner-name {
  margin-top: 2px;
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 8px;
  padding-left: 8px; /* 抵消末尾字间距，保持视觉居中 */
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.banner-full {
  margin-top: 6px;
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--text-2);
}

@media (min-width: 900px) {
  .banner-inner {
    padding: 34px var(--gutter) 40px;
  }

  .banner-emblem {
    width: 88px;
    height: 88px;
  }

  .banner-emblem svg {
    width: 52px;
    height: 52px;
  }

  .banner-org {
    margin-top: 16px;
    font-size: 16px;
    letter-spacing: 4px;
  }

  .banner-name {
    font-size: 56px;
    letter-spacing: 16px;
    padding-left: 16px;
  }

  .banner-full {
    margin-top: 10px;
    font-size: 20px;
    letter-spacing: 6px;
  }
}

/* ============ 通栏导航条（吸顶） ============ */
.topnav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(var(--primary-dark-rgb), 0.22);
}

.topnav-inner {
  position: relative;
}

.topnav-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 52px;
  padding: 0 4px;
  border: none;
  font-family: inherit;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #fff;
  background: transparent;
  cursor: pointer;
}

.topnav-toggle-bars,
.topnav-toggle-bars::before,
.topnav-toggle-bars::after {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform 0.2s, background 0.2s;
}

.topnav-toggle-bars {
  position: relative;
}

.topnav-toggle-bars::before,
.topnav-toggle-bars::after {
  content: '';
  position: absolute;
  left: 0;
}

.topnav-toggle-bars::before { top: -7px; }
.topnav-toggle-bars::after { top: 7px; }

.topnav-toggle[aria-expanded='true'] .topnav-toggle-bars { background: transparent; }
.topnav-toggle[aria-expanded='true'] .topnav-toggle-bars::before { transform: translateY(7px) rotate(45deg); }
.topnav-toggle[aria-expanded='true'] .topnav-toggle-bars::after { transform: translateY(-7px) rotate(-45deg); }

.topnav-list {
  display: flex;
}

.topnav-list li {
  flex: 1;
}

.topnav-list a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 8px;
  font-size: 18px;
  letter-spacing: 2px;
  color: #fff;
  transition: background 0.15s;
}

.topnav-list a:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* 当前页：底部暖杏色横条 + 浅色底 */
.topnav-list a[aria-current='page'] {
  font-weight: 600;
  background: rgba(255, 255, 255, 0.16);
}

.topnav-list a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 22%;
  right: 22%;
  bottom: 0;
  height: 4px;
  border-radius: 4px 4px 0 0;
  background: var(--accent);
}

/* 手机：导航收成一条“菜单”栏，展开后纵向排列，仍是 6 项 */
@media (max-width: 899px) {
  .topnav-toggle {
    display: flex;
  }

  .topnav-list {
    display: none;
    flex-direction: column;
    padding-bottom: 8px;
  }

  .topnav-list.is-open {
    display: flex;
  }

  .topnav-list a {
    justify-content: flex-start;
    min-height: 52px;
    padding: 0 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .topnav-list a[aria-current='page']::after {
    left: 0;
    right: auto;
    top: 12px;
    bottom: 12px;
    width: 4px;
    height: auto;
    border-radius: 4px;
  }

  /* 没有 JavaScript 时直接展开 */
  html:not(.js) .topnav-toggle {
    display: none;
  }

  html:not(.js) .topnav-list {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }

  html:not(.js) .topnav-list li {
    flex: 1 1 33%;
  }
}

/* ============ 首页内容衔接（没有品牌渐变区，入口卡片不再上浮压住它） ============ */
.v2 .entry-panel {
  margin-top: 28px;
  box-shadow: 0 10px 30px rgba(var(--primary-dark-rgb), 0.1);
}

@media (min-width: 900px) {
  .v2 .entry-panel {
    margin-top: 40px;
  }
}