* { box-sizing: border-box; }
body {
    margin: 0;
    color: #1f2933;
    background: #f5f7fa;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
.topbar {
    background: #ffffff;
    border-bottom: 1px solid #e4e7eb;
}
.wrap {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}
.nav {
    min-height: 64px;
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: space-between;
}
.brand {
    font-size: 22px;
    font-weight: 800;
    color: #102a43;
}
.navlinks {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 14px;
    color: #52606d;
}
.hero {
    padding: 36px 0 22px;
}
.hero h1 {
    margin: 0 0 8px;
    font-size: clamp(28px, 4vw, 44px);
    color: #102a43;
}
.hero p { margin: 0; color: #627d98; }
.grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 24px;
    align-items: start;
}
.list {
    display: grid;
    gap: 14px;
}
.article-card, .panel {
    background: #ffffff;
    border: 1px solid #e4e7eb;
    border-radius: 8px;
    padding: 18px;
}
.article-card h2 {
    margin: 0 0 8px;
    font-size: 21px;
    line-height: 1.35;
    color: #102a43;
}
.meta { color: #829ab1; font-size: 13px; }
.summary { color: #52606d; margin: 10px 0 0; }
.panel h3 { margin: 0 0 12px; font-size: 17px; }
.category-list { display: grid; gap: 8px; }
.article-page {
    background: #ffffff;
    border: 1px solid #e4e7eb;
    border-radius: 8px;
    padding: 28px;
}
.article-page h1 { margin-top: 0; line-height: 1.25; color: #102a43; }
.article-content { margin-top: 22px; }
.article-content h2 { margin-top: 30px; color: #243b53; }
.article-content p { margin: 0 0 16px; }
.empty {
    padding: 34px;
    text-align: center;
    color: #829ab1;
    background: #ffffff;
    border: 1px dashed #bcccdc;
    border-radius: 8px;
}
.footer {
    margin-top: 40px;
    padding: 24px 0;
    color: #829ab1;
    font-size: 13px;
}
.admin-shell { width: min(1180px, calc(100% - 28px)); margin: 24px auto; }
.admin-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}
.admin-nav a, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 8px 13px;
    border: 1px solid #cbd2d9;
    border-radius: 6px;
    background: #fff;
    color: #243b53;
    cursor: pointer;
    font-size: 14px;
}
.btn.primary { background: #0b7285; border-color: #0b7285; color: #fff; }
.btn.danger { background: #c92a2a; border-color: #c92a2a; color: #fff; }
.admin-card {
    background: #fff;
    border: 1px solid #e4e7eb;
    border-radius: 8px;
    padding: 18px;
    margin-bottom: 16px;
}
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { padding: 10px; border-bottom: 1px solid #e4e7eb; text-align: left; vertical-align: top; }
th { color: #52606d; font-size: 13px; }
input, select, textarea {
    width: 100%;
    min-height: 38px;
    border: 1px solid #bcccdc;
    border-radius: 6px;
    padding: 8px 10px;
    font: inherit;
    background: #fff;
}
textarea { min-height: 140px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.notice { padding: 10px 12px; border-radius: 6px; background: #e6fffa; color: #0b7285; margin-bottom: 14px; }
.error { padding: 10px 12px; border-radius: 6px; background: #fff5f5; color: #c92a2a; margin-bottom: 14px; }
@media (max-width: 760px) {
    .grid, .form-grid { grid-template-columns: 1fr; }
    .nav { align-items: flex-start; flex-direction: column; padding: 14px 0; }
    .article-page { padding: 18px; }
}