/* =========================================================
   银龄生活 · 银发经济健康生活网
   配色源自参考图：玉颜 #FFE5E5（柔粉）· 松绿 #8CE6A4（主色）
   面向 55-70 岁女性 —— 大字号 · 高对比 · 雅致易读
   ========================================================= */

:root {
  /* ---------- 主题色（参考图配色） ---------- */
  --jade-pink: #ffe5e5;         /* 玉颜 · 柔粉 */
  --jade-pink-2: #ffd3d3;       /* 柔粉深一档 */
  --pine: #8ce6a4;              /* 松绿 · 主色 */
  --pine-light: #b8efc6;        /* 浅松绿 */
  --pine-soft: #eaf8ef;         /* 极浅松绿 · 底纹 */
  --pine-deep: #1f6d4a;         /* 深松绿 · 标题 / 主按钮 */
  --pine-mid: #2e8b63;          /* 中松绿 · 强调 */
  --pine-ink: #1c3a2d;          /* 墨绿 · 正文 */

  /* ---------- 中性色 ---------- */
  --bg: #fafcfa;                /* 页面背景：微绿的暖白 */
  --card: #ffffff;
  --text: #24413a;              /* 正文：墨绿灰，高对比 */
  --text-soft: #55706a;
  --text-muted: #8ba399;
  --border: #e2f0e8;
  --border-soft: #eef6f1;

  /* ---------- 圆角 / 阴影 ---------- */
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --shadow: 0 6px 22px rgba(46, 139, 99, 0.07);
  --shadow-hover: 0 14px 34px rgba(46, 139, 99, 0.15);

  /* ---------- 字号（老年人友好） ---------- */
  --fs-base: 18px;
  --fs-article: 20px;
  --fs-article-title: 2rem;
  --lh: 1.9;

  --ff-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong",
    "SimSun", "宋体", serif;
  --ff-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "微软雅黑",
    "Hiragino Sans GB", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--ff-sans);
  font-size: var(--fs-base);
  line-height: var(--lh);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* 字号放大模式 */
body.fs-large { --fs-base: 21px; --fs-article: 23px; }
body.fs-xlarge { --fs-base: 24px; --fs-article: 26px; }

a { color: var(--pine-mid); text-decoration: none; }
a:hover { color: var(--pine-deep); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left));
  padding-right: max(20px, env(safe-area-inset-right));
}

/* 无障碍：键盘焦点可见 */
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--pine);
  outline-offset: 2px;
  border-radius: 8px;
}

/* ================= 顶部导航 ================= */
.site-header {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--pine-deep);
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: 2px;
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 44px; height: 44px;
  background: linear-gradient(150deg, var(--jade-pink) 0%, var(--pine-light) 100%);
  color: var(--pine-deep);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--ff-serif);
  font-size: 1.5rem;
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.7), var(--shadow);
}
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav a {
  display: inline-block;
  padding: 9px 18px;
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 1rem;
  white-space: nowrap;
  transition: all .18s ease;
}
.nav a:hover {
  background: var(--pine-soft);
  color: var(--pine-deep);
  text-decoration: none;
}
.nav a.active { background: var(--pine-deep); color: #fff; }

/* 字号调节 */
.fs-ctrl { display: flex; gap: 6px; align-items: center; }
.fs-ctrl button {
  font-family: var(--ff-sans);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-soft);
  min-width: 46px; height: 42px;
  padding: 0 12px;
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
  transition: all .18s ease;
}
.fs-ctrl button:hover { border-color: var(--pine); color: var(--pine-deep); }

/* ================= 首页 Hero ================= */
.hero {
  position: relative;
  padding: 58px 20px 66px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 50% -20%, var(--jade-pink) 0%, rgba(255,229,229,0) 55%),
    linear-gradient(180deg, #fff7f7 0%, #f6fcf7 42%, #e6f8ec 78%, #cdf3d9 100%);
}
.hero::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -70px;
  width: 240px; height: 240px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(140,230,164,0.55), rgba(140,230,164,0) 70%);
  pointer-events: none;
}
.hero .eyebrow {
  display: inline-block;
  font-size: .95rem;
  letter-spacing: 3px;
  color: var(--pine-mid);
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--border);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}
.hero h1 {
  font-family: var(--ff-serif);
  font-size: 2.5rem;
  line-height: 1.35;
  color: var(--pine-deep);
  letter-spacing: 3px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.hero p {
  font-size: 1.18rem;
  color: var(--text-soft);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.hero .tagline-strong { color: var(--pine-mid); font-weight: 700; }

/* ================= 分类入口 ================= */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 26px 0 8px;
}
.cat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px 20px;
  text-align: center;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--pine-light);
  text-decoration: none;
}
.cat-card .icon {
  width: 62px; height: 62px;
  margin: 0 auto 12px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.9rem;
  background: linear-gradient(150deg, var(--jade-pink) 0%, var(--pine-soft) 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.8);
}
.cat-card:nth-child(even) .icon {
  background: linear-gradient(150deg, var(--pine-soft) 0%, var(--jade-pink) 100%);
}
.cat-card .name {
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: 1.22rem;
  color: var(--pine-deep);
  letter-spacing: 1px;
}
.cat-card .desc { font-size: .95rem; color: var(--text-muted); margin-top: 5px; }

/* ================= 区块标题 ================= */
.section-title {
  font-family: var(--ff-serif);
  font-size: 1.6rem;
  color: var(--pine-deep);
  letter-spacing: 2px;
  margin: 40px 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::before {
  content: "";
  width: 6px; height: 26px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--jade-pink) 0%, var(--pine) 100%);
}

/* ================= 文章列表 ================= */
.article-list { display: flex; flex-direction: column; gap: 16px; }
.article-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: var(--pine-light);
}
.article-card .thumb {
  width: 116px; height: 92px;
  border-radius: 14px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.6rem;
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.35);
}
.article-card .meta { color: var(--text-muted); font-size: .92rem; margin-bottom: 8px; }
.article-card .title {
  font-family: var(--ff-serif);
  font-size: 1.32rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}
.article-card .title a { color: inherit; }
.article-card .title a:hover { color: var(--pine-deep); text-decoration: none; }
.article-card .excerpt { color: var(--text-soft); margin-top: 8px; font-size: 1.02rem; }

.badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 700;
  background: var(--pine-soft);
  color: var(--pine-deep);
  margin-right: 10px;
}
.badge.pink { background: var(--jade-pink); color: #b0504f; }

/* ================= 文章正文页 ================= */
.article-page { padding: 34px 20px 56px; }
.article-header { margin-bottom: 10px; }
.article-header .meta { color: var(--text-muted); font-size: .96rem; margin-bottom: 14px; }
.article-header h1 {
  font-family: var(--ff-serif);
  font-size: var(--fs-article-title);
  line-height: 1.45;
  color: var(--pine-ink);
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.article-body { font-size: var(--fs-article); }
.article-body h2 {
  font-family: var(--ff-serif);
  font-size: 1.38em;
  color: var(--pine-deep);
  letter-spacing: 1px;
  margin: 1.5em 0 .6em;
  padding-left: 14px;
  border-left: 5px solid var(--pine);
}
.article-body h3 { font-size: 1.16em; color: var(--pine-deep); margin: 1.2em 0 .5em; }
.article-body p { margin-bottom: 1.15em; }
.article-body ul, .article-body ol { margin: 0 0 1.15em 1.5em; }
.article-body li { margin-bottom: .55em; }
.article-body strong { color: var(--pine-ink); }
.article-body blockquote {
  border-left: 5px solid var(--pine);
  background: linear-gradient(90deg, var(--pine-soft), rgba(234,248,239,0.35));
  padding: 16px 20px;
  border-radius: 0 14px 14px 0;
  margin: 1.3em 0;
  color: #2c5040;
}
.article-body .key-box {
  background: linear-gradient(150deg, var(--pine-soft) 0%, #f6fbf8 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 1.3em 0;
}
.article-body .key-box .kb-title {
  font-family: var(--ff-serif);
  font-weight: 700;
  color: var(--pine-deep);
  margin-bottom: 8px;
  font-size: 1.05em;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.3em 0;
  font-size: .96em;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.article-body th, .article-body td {
  border: 1px solid var(--border-soft);
  padding: 12px 14px;
  text-align: left;
}
.article-body th { background: var(--pine-soft); color: var(--pine-deep); }

/* ================= 免责声明 ================= */
.disclaimer {
  background: linear-gradient(150deg, #fff4f4 0%, #fef8f8 100%);
  border: 1px solid #f6dede;
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 26px 0;
  color: #8a5a5a;
  font-size: .98rem;
  line-height: 1.8;
}
.disclaimer strong { color: #b0504f; }

/* ================= 返回 / 相关 ================= */
.back-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 6px 0 26px;
  padding: 11px 22px;
  background: var(--pine-deep);
  color: #fff;
  border-radius: 999px;
  font-size: 1rem;
  transition: background .18s ease;
}
.back-home:hover { background: var(--pine-mid); text-decoration: none; color: #fff; }

/* ================= 页脚 ================= */
.site-footer {
  background: #1c3a2d;
  color: #cfe4d7;
  padding: 40px 20px 46px;
  margin-top: 56px;
}
.site-footer .container { text-align: center; }
.site-footer .brand {
  color: #fff;
  justify-content: center;
  margin-bottom: 14px;
}
.site-footer .brand .logo {
  background: linear-gradient(150deg, var(--jade-pink) 0%, var(--pine) 100%);
  color: var(--pine-deep);
  box-shadow: none;
}
.site-footer p { font-size: .96rem; color: #a9c6b6; margin-bottom: 10px; }
.site-footer a { color: var(--pine-light); }
.site-footer a:hover { color: #fff; }

/* 备案号 —— 工信部要求底部展示链接 */
.site-footer .beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 0;
}
.site-footer .beian::before {
  content: "";
  width: 14px;
  height: 16px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 16'><path d='M7 .5L.8 2.7v5.4c0 4 2.6 7.1 6.2 7.9 3.6-.8 6.2-3.9 6.2-7.9V2.7L7 .5z'/><path d='M4.6 8.2l1.6 1.6L9.6 6.4' fill='%23ffffff'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 16'><path d='M7 .5L.8 2.7v5.4c0 4 2.6 7.1 6.2 7.9 3.6-.8 6.2-3.9 6.2-7.9V2.7L7 .5z'/><path d='M4.6 8.2l1.6 1.6L9.6 6.4' fill='%23ffffff'/></svg>") center/contain no-repeat;
}

/* ================= 响应式 ================= */
@media (max-width: 640px) {
  :root { --fs-article-title: 1.65rem; }
  .hero h1 { font-size: 2rem; letter-spacing: 2px; }
  .hero { padding: 44px 20px 52px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .article-card { flex-direction: column; padding: 20px; }
  .article-card .thumb { width: 100%; height: 130px; }
  .header-inner { justify-content: center; }
  .nav { justify-content: center; }
  .section-title { font-size: 1.4rem; }
}