/* ============================================================
   采庆养老服务评估中心 官网全局样式
   设计目标：适老化（大字号、高对比、清晰层级）+ 专业可信 + SEO 友好
   ============================================================ */

:root {
  --c-primary: #1f6f8b;      /* 主色：沉稳医疗蓝绿，传递专业与照护 */
  --c-primary-dark: #164f63;
  --c-primary-light: #e6f2f5;
  --c-accent: #e08a2b;       /* 暖橙：关怀、活力 */
  --c-accent-soft: #fbe9d3;
  --c-ink: #1f2a30;          /* 正文深墨 */
  --c-ink-soft: #4a5a62;
  --c-bg: #ffffff;
  --c-bg-alt: #f5f8f9;       /* 浅灰蓝交替背景 */
  --c-border: #dde6e9;
  --c-ok: #2e8b57;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(31, 111, 139, .10);
  --maxw: 1180px;
  --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 18px;            /* 适老化基础字号 */
  line-height: 1.75;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-primary-dark); text-decoration: underline; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--c-primary-dark);
  color: #d6e7ec;
  font-size: 14px;
}
.topbar .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding: 6px 20px; }
.topbar a { color: #bfe0e9; }

/* ---------- 头部 / 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--c-border);
  backdrop-filter: blur(6px);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 76px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
  width: 46px; height: 46px; border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: #fff; font-weight: 700; font-size: 20px;
  display: grid; place-items: center; flex: 0 0 auto;
}
.brand .name { line-height: 1.2; }
.brand .name b { font-size: 19px; color: var(--c-ink); }
.brand .name span { display: block; font-size: 13px; color: var(--c-ink-soft); }

.nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav a {
  padding: 10px 14px; border-radius: 8px; font-size: 16px; color: var(--c-ink);
}
.nav a:hover { background: var(--c-primary-light); text-decoration: none; }
.nav a.active { background: var(--c-primary); color: #fff; }

.nav-toggle { display: none; background: none; border: 1px solid var(--c-border); border-radius: 8px; padding: 8px 12px; font-size: 16px; cursor: pointer; }

/* ---------- 通用区块 ---------- */
section { padding: 56px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-title { text-align: center; margin: 0 0 8px; font-size: 30px; color: var(--c-primary-dark); }
.section-sub { text-align: center; color: var(--c-ink-soft); margin: 0 0 36px; font-size: 17px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; padding: 13px 26px; border-radius: 999px; font-size: 17px;
  background: var(--c-primary); color: #fff; border: none; cursor: pointer; transition: .2s;
}
.btn:hover { background: var(--c-primary-dark); color: #fff; text-decoration: none; }
.btn-accent { background: var(--c-accent); }
.btn-accent:hover { background: #c5741f; }
.btn-ghost { background: transparent; border: 2px solid var(--c-primary); color: var(--c-primary); }
.btn-ghost:hover { background: var(--c-primary); color: #fff; }

/* ---------- Hero / 轮播 ---------- */
.hero {
  position: relative;
  min-height: 560px;
  padding: 0;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(22,79,99,.85) 0%, rgba(22,79,99,.55) 55%, rgba(22,79,99,.25) 100%);
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  width: 100%;
  padding: 84px 20px;
}
.hero-content h1 { font-size: 42px; margin: 0 0 16px; line-height: 1.25; color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,.25); }
.hero-content p { font-size: 19px; max-width: 720px; margin: 0 0 28px; color: #f0f7f9; text-shadow: 0 1px 6px rgba(0,0,0,.25); }
.hero-content .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-content .actions .btn-ghost { border-color: #fff; color: #fff; }
.hero-content .actions .btn-ghost:hover { background: #fff; color: var(--c-primary-dark); }

/* 轮播组件 */
.carousel {
  position: absolute; inset: 0;
  z-index: 1;
}
.carousel-track {
  position: relative; width: 100%; height: 100%;
}
.carousel-slide {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity .8s ease-in-out;
  visibility: hidden;
}
.carousel-slide.active { opacity: 1; visibility: visible; }
.carousel-slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}
.carousel-caption {
  position: absolute; right: 28px; bottom: 84px;
  background: rgba(255,255,255,.92);
  color: var(--c-primary-dark);
  padding: 10px 18px; border-radius: 999px;
  font-size: 15px; font-weight: 600;
  box-shadow: 0 4px 14px rgba(0,0,0,.12);
  z-index: 4;
}
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(255,255,255,.85); color: var(--c-primary-dark);
  border: none; cursor: pointer; font-size: 28px; line-height: 1;
  display: grid; place-items: center;
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
  transition: .2s; z-index: 5;
}
.carousel-btn:hover { background: #fff; color: var(--c-accent); }
.carousel-prev { left: 20px; }
.carousel-next { right: 20px; }
.carousel-dots {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; z-index: 5;
}
.carousel-dots button {
  width: 12px; height: 12px; border-radius: 50%;
  background: rgba(255,255,255,.55); border: 2px solid transparent;
  cursor: pointer; transition: .2s;
}
.carousel-dots button.active { background: #fff; border-color: var(--c-accent); transform: scale(1.15); }
.carousel-dots button:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(31,111,139,.16); }
.card h3 { margin: 0 0 10px; font-size: 21px; color: var(--c-primary-dark); }
.card .ico { font-size: 34px; margin-bottom: 10px; }
.card p { margin: 0; color: var(--c-ink-soft); font-size: 16px; }
.card .tag { display: inline-block; font-size: 13px; color: var(--c-primary); background: var(--c-primary-light); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* ---------- 数据与资质条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; text-align: center; }
.stat { padding: 22px; background: #fff; border-radius: var(--radius); border: 1px solid var(--c-border); }
.stat b { display: block; font-size: 34px; color: var(--c-primary); line-height: 1.1; }
.stat span { color: var(--c-ink-soft); font-size: 15px; }

/* ---------- 内容排版 ---------- */
.prose { max-width: 880px; margin: 0 auto; }
.prose h2 { font-size: 26px; color: var(--c-primary-dark); margin-top: 40px; border-left: 5px solid var(--c-accent); padding-left: 14px; }
.prose h3 { font-size: 21px; color: var(--c-primary); margin-top: 28px; }
.prose p, .prose li { font-size: 17px; color: var(--c-ink); }
.prose ul, .prose ol { padding-left: 26px; }
.prose li { margin: 8px 0; }
.callout {
  background: var(--c-primary-light); border-left: 5px solid var(--c-primary);
  padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 22px 0; font-size: 16px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 14px; color: var(--c-ink-soft); padding: 14px 0; }
.breadcrumb a { color: var(--c-ink-soft); }
.breadcrumb span { margin: 0 6px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table.doc { width: 100%; border-collapse: collapse; margin: 18px 0; background: #fff; font-size: 16px; }
table.doc th, table.doc td { border: 1px solid var(--c-border); padding: 12px 14px; text-align: left; vertical-align: top; }
table.doc thead th { background: var(--c-primary); color: #fff; }
table.doc tbody tr:nth-child(even) { background: var(--c-bg-alt); }

/* ---------- 资讯库筛选 ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 26px; }
.filter-bar button {
  border: 1px solid var(--c-border); background: #fff; color: var(--c-ink);
  padding: 9px 18px; border-radius: 999px; cursor: pointer; font-size: 15px;
}
.filter-bar button.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

.post-list { display: grid; gap: 16px; }
.post {
  display: grid; grid-template-columns: 120px 1fr; gap: 18px; align-items: start;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 18px 22px;
}
.post .date { text-align: center; color: var(--c-primary); padding-top: 4px; }
.post .date b { display: block; font-size: 26px; line-height: 1; }
.post .date span { font-size: 13px; color: var(--c-ink-soft); }
.post-body { min-width: 0; }
.post h3 { margin: 0 0 6px; font-size: 19px; color: var(--c-ink); line-height: 1.5; }
.post p { margin: 0; font-size: 15px; color: var(--c-ink-soft); }
.post .cat { font-size: 12px; color: #fff; background: var(--c-accent); padding: 2px 10px; border-radius: 999px; }

/* 资讯详情展开 */
.post-toggle {
  background: none; border: none; padding: 0; margin: 0; font: inherit; color: inherit;
  text-align: left; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  max-width: 100%;
}
.post-toggle:hover { color: var(--c-primary); }
.post-toggle::after {
  content: "▼"; font-size: 12px; color: var(--c-primary); transition: transform .2s ease; flex-shrink: 0;
}
.post-toggle[aria-expanded="true"]::after { transform: rotate(180deg); }
.post-detail {
  margin-top: 14px; padding: 16px 18px;
  background: var(--c-bg-alt); border-left: 4px solid var(--c-primary); border-radius: 0 10px 10px 0;
  display: none;
}
.post-detail[hidden] { display: none; }
.post-detail.open { display: block; }
.post-detail p { margin: 0 0 10px; line-height: 1.8; }
.post-detail p:last-child { margin-bottom: 0; }

/* ---------- 联系信息 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-info li { list-style: none; padding: 10px 0; border-bottom: 1px dashed var(--c-border); }
.contact-info { padding: 0; margin: 0; }
.contact-info b { color: var(--c-primary-dark); }

.map-placeholder {
  background: var(--c-bg-alt); border: 1px dashed var(--c-border); border-radius: var(--radius);
  min-height: 300px; display: grid; place-items: center; color: var(--c-ink-soft); text-align: center; padding: 20px;
}

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-primary-dark); color: #cfe3e9; padding: 44px 0 22px; font-size: 15px; }
.site-footer a { color: #bfe0e9; }
.site-footer h4 { color: #fff; font-size: 17px; margin: 0 0 14px; }
.footer-cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 26px; }
.footer-cols ul { list-style: none; padding: 0; margin: 0; }
.footer-cols li { margin: 8px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 30px; padding-top: 16px; text-align: center; color: #9fc3cd; font-size: 13px; }

/* ---------- 返回顶部 ---------- */
#toTop {
  position: fixed; right: 22px; bottom: 22px; width: 48px; height: 48px; border-radius: 50%;
  background: var(--c-primary); color: #fff; border: none; cursor: pointer; font-size: 22px;
  box-shadow: var(--shadow); display: none; z-index: 60;
}

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2,1fr); }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 17px; }
  .nav { display: none; position: absolute; top: 76px; left: 0; right: 0; flex-direction: column; background: #fff; border-bottom: 1px solid var(--c-border); padding: 10px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-cols { grid-template-columns: 1fr; }
  .hero { min-height: 480px; }
  .hero-content { padding: 64px 16px; }
  .hero-content h1 { font-size: 28px; }
  .hero-content p { font-size: 17px; }
  .carousel-caption { right: 16px; bottom: 64px; font-size: 13px; padding: 7px 13px; }
  .carousel-btn { width: 40px; height: 40px; font-size: 22px; }
  .carousel-prev { left: 10px; }
  .carousel-next { right: 10px; }
  .post { grid-template-columns: 1fr; }
  .post .date { text-align: left; }
}

/* ---------- 收录库详情页 ---------- */
.post-title { color: var(--c-ink); transition: color .15s; }
.post-title:hover { color: var(--c-primary); text-decoration: none; }
.read-more { display: inline-block; margin-top: 10px; color: var(--c-accent); font-weight: 600; font-size: 15px; }
.read-more:hover { text-decoration: underline; }
.article-detail { padding-top: 6px; }
.article-meta { display: flex; align-items: center; gap: 14px; margin: 18px 0 16px; flex-wrap: wrap; }
.article-meta .cat { font-size: 13px; color: #fff; background: var(--c-accent); padding: 3px 12px; border-radius: 999px; }
.article-meta time { color: var(--c-ink-soft); font-size: 14px; }
.article-detail h1 { font-size: 32px; color: var(--c-primary-dark); margin: 0 0 18px; line-height: 1.4; }
.article-detail .lead { font-size: 19px; line-height: 1.9; color: var(--c-ink); background: var(--c-primary-light); padding: 18px 22px; border-radius: 0 10px 10px 0; border-left: 4px solid var(--c-primary); margin: 0 0 26px; }
.article-detail > p { font-size: 17px; line-height: 1.95; margin: 0 0 18px; }
.article-detail .callout { margin-top: 26px; }
.article-detail .back-link { margin-top: 22px; }
.article-detail .back-link a { color: var(--c-primary); font-weight: 600; }
@media (max-width: 680px) {
  .article-detail h1 { font-size: 25px; }
}