:root{
  --bg:#f4f7fb;
  --panel:#ffffff;
  --panel-soft:#f8fbff;
  --line:#e4ebf5;
  --text:#152033;
  --muted:#66758c;
  --primary:#2563eb;
  --primary2:#4f46e5;
  --success:#059669;
  --shadow:0 20px 50px rgba(15,23,42,.08);
  --shadow-soft:0 10px 30px rgba(15,23,42,.05);
  --radius-xl:28px;
  --radius-lg:22px;
  --radius-md:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(37,99,235,.08), transparent 26%),
    radial-gradient(circle at top right, rgba(79,70,229,.08), transparent 24%),
    linear-gradient(180deg,#f8fbff 0%,#f4f7fb 100%);
}
a{text-decoration:none;color:inherit}
.wrap{max-width:1220px;margin:0 auto;padding:0 20px}
.topbar{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(12px);
  background:rgba(248,251,255,.82);
  border-bottom:1px solid rgba(228,235,245,.88);
}
.topbar-inner{
  min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 0;
}
.logo{
  display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;color:#1f3c88;
}
.logo-badge{
  width:42px;
  height:42px;
  border-radius:14px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 12px 24px rgba(79,70,229,.22);
}

.logo-badge img{
  width:36px;
  height:36px;
  object-fit:contain;
}
.nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.nav a{
  padding:10px 14px;border-radius:999px;font-size:14px;color:#445269;
}
.nav a:hover{background:#edf3ff;color:#1d4ed8}
.hero{padding:34px 0 24px}
.hero-card,.card,.form-card,.login-box,.admin-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow);
}
.hero-card{
  padding:34px;
  display:grid;
  grid-template-columns:1.25fr .85fr;
  gap:24px;
}
.hero-title{
  font-size:38px;line-height:1.25;margin:0 0 14px;font-weight:800;letter-spacing:.2px
}
.hero-desc{
  margin:0;
  color:var(--muted);
  font-size:16px;
  line-height:1.9;
}
.hero-points{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:20px
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:999px;
  background:#eef4ff;color:#2957c8;font-size:14px;font-weight:600;
}
.hero-side{
  background:linear-gradient(180deg,#f8fbff 0%,#eef4ff 100%);
  border:1px solid #dfe9fb;
  border-radius:24px;
  padding:24px;
}
.hero-side h3{margin:0 0 14px;font-size:18px}
.hero-side ul{margin:0;padding-left:18px;color:#5a6981;line-height:1.9}
.section{padding-bottom:28px}
.section-head{
  padding:20px 22px;border-bottom:1px solid #edf2fa;display:flex;align-items:center;justify-content:space-between;gap:12px
}
.section-head h2,.section-head h3{margin:0;font-size:20px}
.section-body{padding:22px}
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:22px;padding-bottom:36px
}
.article-list{list-style:none;padding:0;margin:0}
.article-item{
  padding:22px 0;border-bottom:1px dashed #dce5f2
}
.article-item:last-child{border-bottom:0;padding-bottom:0}
.article-item h3{font-size:22px;line-height:1.5;margin:0 0 10px}
.article-item h3 a{color:#152033}
.article-item h3 a:hover{color:#1d4ed8}
.meta{font-size:13px;color:#7a889e}
.excerpt{margin-top:12px;color:#506078;line-height:1.9;font-size:15px}
.tag{
  display:inline-block;padding:7px 12px;border-radius:999px;background:#edf4ff;color:#2558ca;
  font-size:12px;margin:12px 8px 0 0;font-weight:600
}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{padding:12px 0;border-bottom:1px dashed #e1e8f4}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{color:#2b3a51;line-height:1.7}
.footer{padding:20px 0 34px;color:#74839a;font-size:14px}
.article-shell{padding:28px 0 36px}
.article-wrap{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px
}
.article-main{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:32px
}
.article-side{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);padding:24px;height:max-content
}
.article-title{font-size:36px;line-height:1.35;margin:0 0 12px;color:#111b2d;font-weight:800}
.article-content{font-size:16px;line-height:2;color:#1e2a3b}
.article-content h2,.article-content h3{margin-top:30px;color:#14233b}
.article-content p{margin:0 0 16px}
.article-content img{max-width:100%;height:auto;border-radius:16px}
.breadcrumb{font-size:13px;color:#7b89a0;margin-bottom:18px}
.pager{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:22px}
.pager a,.pager span{
  display:inline-block;padding:9px 14px;border-radius:999px;border:1px solid #dce6f5;background:#fff;color:#355179
}
.pager .current{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border-color:transparent}
.admin-wrap{max-width:1220px;margin:26px auto;padding:0 16px}
.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 16px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#fff;border:0;cursor:pointer;box-shadow:0 12px 24px rgba(37,99,235,.18);font-weight:700
}
.btn.gray{background:#eef3fb;color:#355179;box-shadow:none}
.table{
  width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden
}
.table th,.table td{padding:13px 12px;border-bottom:1px solid #edf2fa;text-align:left;font-size:14px;vertical-align:top}
.table th{background:#f8fbff;color:#42506a}
.form-card{padding:22px}
.form-row{margin-bottom:15px}
.form-row label{display:block;font-weight:700;margin-bottom:8px;color:#24344f}
.input,.textarea,.select{
  width:100%;border:1px solid #d5e0f0;border-radius:16px;padding:12px 14px;background:#fff;color:#1b2a41
}
.input:focus,.textarea:focus,.select:focus{outline:none;border-color:#8ab1ff;box-shadow:0 0 0 4px rgba(37,99,235,.08)}
.textarea{min-height:360px;line-height:1.8}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.login-box{max-width:460px;margin:88px auto;padding:26px}
.notice{padding:12px 14px;background:#eff6ff;color:#1d4ed8;border-radius:14px;margin-bottom:14px}
.danger{padding:12px 14px;background:#fff1f2;color:#be123c;border-radius:14px;margin-bottom:14px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat-card{background:#f8fbff;border:1px solid #e2ebfa;border-radius:20px;padding:18px}
.stat-card strong{display:block;font-size:28px;margin-bottom:8px;color:#152033}
.muted{color:var(--muted)}
@media (max-width:980px){
  .hero-card,.layout,.article-wrap,.grid-2,.stat-grid{grid-template-columns:1fr}
  .hero-title{font-size:30px}
  .article-title{font-size:30px}
}