:root{
  --primary:#1f5eff;
  --primary-dark:#123ea8;
  --dark:#172033;
  --text:#1f2937;
  --muted:#64748b;
  --line:#e6eaf0;
  --soft:#f5f7fb;
  --soft-blue:#edf4ff;
  --accent:#ffb020;
  --white:#ffffff;
  --radius:18px;
  --shadow:0 16px 40px rgba(15,23,42,.08);
  --shadow-sm:0 8px 24px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:#f6f8fc;
}
a{color:inherit;transition:.2s ease;text-decoration:none}.text-muted{color:var(--muted)!important}
img{max-width:100%}.btn-rounded{border-radius:999px}.fw-extrabold{font-weight:800}
.btn-primary{background:var(--primary);border-color:var(--primary);box-shadow:0 10px 20px rgba(31,94,255,.16)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-1px)}
.btn-warning{background:var(--accent);border-color:var(--accent);color:#172033;font-weight:700}.btn-warning:hover{background:#f59e0b;border-color:#f59e0b;color:#172033}
.form-control,.form-select{border:1px solid #dde4ee;border-radius:14px;padding:.78rem .95rem;background:#fff}.form-control:focus,.form-select:focus{border-color:#8db2ff;box-shadow:0 0 0 .2rem rgba(31,94,255,.13)}

/* Navbar */
.nav-gradient{background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.navbar-brand{color:var(--dark)!important;letter-spacing:-.4px}.brand-mark{width:38px;height:38px;border-radius:12px;display:inline-grid;place-items:center;background:var(--primary);color:#fff;box-shadow:0 8px 18px rgba(31,94,255,.22)}
.navbar .nav-link{font-weight:600;color:#485568!important;border-radius:999px;padding:.55rem .85rem!important}.navbar .nav-link:hover{background:var(--soft-blue);color:var(--primary)!important}
.navbar .form-control{border-radius:999px;min-width:220px}.nav-login{background:#172033;color:#fff!important;border-radius:999px;padding:.55rem .95rem;font-weight:700}.nav-login:hover{background:#0f172a;color:#fff!important}

/* Public homepage */
.site-hero{position:relative;padding:74px 0 54px;background:linear-gradient(135deg,#eef5ff 0%,#ffffff 55%,#fff7e8 100%);border-bottom:1px solid var(--line);overflow:hidden}
.site-hero:after{content:"";position:absolute;right:-90px;top:-100px;width:310px;height:310px;border-radius:50%;background:rgba(31,94,255,.08)}
.hero-kicker{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:.86rem;font-weight:700;color:#36506f;box-shadow:var(--shadow-sm)}
.hero-title{font-size:clamp(2.05rem,4.3vw,4.35rem);line-height:1.05;letter-spacing:-1.4px;color:var(--dark)}
.hero-title span{color:var(--primary)}.hero-note{max-width:680px;font-size:1.05rem;color:#5f6f85}.hero-actions{display:flex;flex-wrap:wrap;gap:10px}.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.feature-chip{background:#fff;border:1px solid var(--line);border-radius:16px;padding:13px 14px;font-weight:700;box-shadow:var(--shadow-sm);font-size:.94rem}
.headline-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:12px;box-shadow:var(--shadow)}.headline-card img{width:100%;height:290px;object-fit:cover;border-radius:18px;background:#dbe6f7}.headline-body{padding:18px 10px 8px}.paper-meta{font-size:.84rem;color:var(--muted)}
.section-pill{display:inline-block;border:1px solid #cddcff;background:#edf4ff;color:#1e4fbf;border-radius:999px;padding:7px 13px;font-size:.8rem;font-weight:800}.section-title{letter-spacing:-.4px;color:var(--dark)}
.card-news{border:1px solid var(--line);border-radius:22px;background:#fff;overflow:hidden;box-shadow:var(--shadow-sm);transition:.22s ease}.card-news:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.news-img{width:100%;height:210px;object-fit:cover;background:#dfe8f5}.news-number{width:34px;height:34px;border-radius:11px;background:#f2f5fb;color:#304156;display:grid;place-items:center;font-weight:800}.badge-soft{background:#edf4ff;color:#1e4fbf;border:1px solid #cfddff}.badge-gold{background:#fff5dc;color:#9a5b00;border:1px solid #ffe0a0}.sidebar-box{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-sm)}
.category-link{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;margin-bottom:10px;font-weight:650;color:#243047}.category-link:hover{border-color:#9ebaff;background:#f5f8ff;color:var(--primary);transform:translateX(3px)}
.article-content{font-size:1.05rem;line-height:1.9;color:#293548}.article-content p{margin-bottom:1.1rem}.article-hero-img{max-height:460px;object-fit:cover}.comment-box{background:#fff;border:1px solid var(--line);border-radius:18px}.page-heading{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow-sm)}
.empty-state{border:1px dashed #b7c4d8;background:#f8fbff;border-radius:18px;padding:22px;text-align:center;color:var(--muted)}

/* Footer */
.footer{background:#111827;color:#e5e7eb;margin-top:70px}.footer .text-muted{color:#aab4c3!important}.footer .brand-mark{box-shadow:none}

/* Login */
.login-page{min-height:100vh;background:linear-gradient(135deg,#eef5ff,#ffffff 55%,#fff7df);display:flex;align-items:center}.login-card{border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.login-side{background:linear-gradient(135deg,#172033,#1f5eff);color:#fff}.icon-bubble{width:54px;height:54px;border-radius:17px;display:inline-grid;place-items:center;background:#edf4ff;color:var(--primary);font-size:1.45rem}.mini-badge{border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.12);border-radius:999px;padding:7px 12px;color:#fff;display:inline-flex;gap:7px;align-items:center;font-size:.86rem}

/* Admin */
.admin-wrapper{min-height:100vh;background:#f5f7fb}.admin-sidebar{min-height:100vh;background:#111827;color:#fff;position:sticky;top:0}.brand-box{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);border-radius:18px;padding:16px}.user-pill{background:rgba(31,94,255,.14);border:1px solid rgba(147,176,255,.20);border-radius:16px;padding:13px}.admin-sidebar a{color:#d5dce8;text-decoration:none;display:flex;align-items:center;gap:10px;padding:11px 13px;border-radius:13px;margin-bottom:7px;font-weight:650}.admin-sidebar a:hover,.admin-sidebar a.active{background:#1f5eff;color:#fff}.admin-main{padding:26px}.admin-topbar{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px 18px;margin-bottom:24px;box-shadow:var(--shadow-sm)}.admin-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm)}.stat-card{overflow:hidden}.stat-icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#edf4ff;color:var(--primary);font-size:1.3rem}.table{--bs-table-bg:transparent}.table thead th{font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:#627085;background:#f6f8fc;border-bottom:1px solid var(--line)}.table td,.table th{vertical-align:middle;padding:13px 12px}.table-hover tbody tr:hover{background:#f9fbff}.action-btn,.btn-sm{border-radius:10px}.thumb-admin{width:82px;height:58px;object-fit:cover;border-radius:12px;box-shadow:0 6px 14px rgba(15,23,42,.10)}

@media(max-width:991px){.admin-sidebar{min-height:auto;position:relative}.admin-main{padding:18px}.site-hero{padding:44px 0}.feature-strip{grid-template-columns:1fr}.headline-card img{height:230px}.navbar .form-control{min-width:100%}}