:root {
  --bg: #0f1226;
  --bg2: #161a3a;
  --card: #1d2247;
  --card2: #232a55;
  --accent: #6c8cff;
  --accent2: #36d6c3;
  --text: #e8ebff;
  --muted: #9aa3d4;
  --line: #2c3370;
  --danger: #ff6b81;
  --ok: #4be39a;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: linear-gradient(160deg, var(--bg), var(--bg2)); color: var(--text); min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 18px; }
header.top {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(8px);
  background: rgba(15,18,38,.82); border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 18px; height: 60px; }
.brand { font-weight: 800; font-size: 19px; color: #fff; letter-spacing: .5px; }
.brand .dot { color: var(--accent2); }
.nav a { color: var(--muted); font-weight: 600; font-size: 14px; }
.nav a.active, .nav a:hover { color: #fff; }
.nav .spacer { flex: 1; }
.btn {
  display: inline-block; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card2); color: var(--text); font-size: 14px; cursor: pointer; font-weight: 600;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: linear-gradient(120deg, var(--accent), #8a6cff); border: none; color: #fff; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 5px 10px; font-size: 13px; }
.hero { padding: 46px 0 24px; }
.hero h1 { font-size: 34px; margin: 0 0 10px; line-height: 1.2; }
.hero p { color: var(--muted); font-size: 16px; max-width: 720px; margin: 0 0 18px; }
section.block { margin: 26px 0; }
.section-title { display: flex; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.section-title h2 { font-size: 22px; margin: 0; }
.section-title a { font-size: 13px; }
.stats { display: flex; flex-wrap: wrap; gap: 14px; margin: 8px 0 4px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; min-width: 120px; }
.stat b { font-size: 26px; color: #fff; display: block; }
.stat span { color: var(--muted); font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; transition: .15s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { margin: 0 0 6px; font-size: 16px; line-height: 1.35; }
.card .meta { color: var(--muted); font-size: 12.5px; margin-bottom: 8px; }
.card p { color: #c7cdf5; font-size: 13.5px; line-height: 1.55; margin: 0; max-height: 96px; overflow: hidden; }
.tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px; background: rgba(108,140,255,.18); color: var(--accent); margin-right: 6px; }
.tag.green { background: rgba(75,227,154,.16); color: var(--ok); }
.tag.amber { background: rgba(255,196,84,.16); color: #ffc454; }
.tag.gray { background: rgba(154,163,212,.16); color: var(--muted); }
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
input, select, textarea {
  background: var(--card2); border: 1px solid var(--line); color: var(--text); border-radius: 10px;
  padding: 9px 12px; font-size: 14px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
.search { flex: 1; min-width: 220px; }
.pager { display: flex; gap: 8px; justify-content: center; margin: 18px 0; }
.muted { color: var(--muted); }
.center { text-align: center; }
.empty { color: var(--muted); padding: 30px; text-align: center; }
.auth-wrap { max-width: 400px; margin: 60px auto; }
.auth-wrap .card { padding: 26px; }
.auth-wrap h2 { margin-top: 0; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-row input { width: 100%; }
.msg { font-size: 13px; margin-top: 10px; min-height: 18px; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--ok); }
.upload-zone { border: 1px dashed var(--line); border-radius: 12px; padding: 18px; margin-bottom: 14px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 160px; }
footer { color: var(--muted); font-size: 13px; text-align: center; padding: 30px 0 40px; border-top: 1px solid var(--line); margin-top: 30px; }

/* 公益徽章 */
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 999px; letter-spacing: .5px; }
.badge-np { background: rgba(54,214,195,.18); color: var(--accent2); border: 1px solid rgba(54,214,195,.4); }

/* 语言切换按钮组 */
.lang-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang-switch button {
  border: none; background: transparent; color: var(--muted); font-size: 12.5px; font-weight: 600;
  padding: 5px 11px; cursor: pointer; line-height: 1;
}
.lang-switch button:hover { color: var(--text); }
.lang-switch button.active { background: linear-gradient(120deg, var(--accent), #8a6cff); color: #fff; }

/* 双语长正文：按 body.lang-* 切换显隐（关于页用 .i18n-zh / .i18n-en 容器） */
.i18n-zh, .i18n-en { display: none; }
body.lang-zh .i18n-zh { display: block; }
body.lang-en .i18n-en { display: block; }

/* 关于页排版 */
.about-wrap { max-width: 820px; margin: 0 auto; }
.about-wrap h2 { font-size: 22px; margin: 28px 0 10px; }
.about-wrap p { color: #c7cdf5; font-size: 15px; line-height: 1.75; }
.about-wrap ul { color: #c7cdf5; font-size: 15px; line-height: 1.75; padding-left: 22px; }
.about-wrap li { margin-bottom: 8px; }
.about-wrap .lead { color: var(--text); font-size: 17px; }
.about-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 14px 0; }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }