:root{--red:#d83b2a;--nav:#b12319;--muted:#6b7280;--bg:#f3f6f9;--card:#fff}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Segoe UI,Helvetica,system-ui;background:var(--bg);color:#111}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
.topbar{background:var(--nav);color:white;padding:10px 0}
.brand{font-weight:800;font-size:20px}
.mainnav a{color:white;text-decoration:none;margin:0 8px;padding:6px 8px;border-radius:4px}
.mainnav a.active{background:rgba(255,255,255,0.08)}
.auth .btn{background:transparent;border:1px solid rgba(255,255,255,0.12);color:white;padding:6px 10px;border-radius:6px}

.hero{display:flex;gap:20px;align-items:flex-start;padding:24px 0}
.hero.retro{background:linear-gradient(180deg,rgba(177,35,25,0.04),transparent);border-radius:8px;padding:18px}
.hero-left{flex:1}
.hero h1{margin:0 0 8px 0}
.muted{color:var(--muted);font-size:14px}
.cta-row{margin-top:12px}
.btn{background:var(--red);color:white;padding:8px 12px;border-radius:6px;text-decoration:none;display:inline-block}
.btn.ghost{background:transparent;border:1px solid rgba(0,0,0,0.06);color:#111}
.btn.small{padding:6px 8px;font-size:13px}

.login-panel{width:260px;background:var(--card);padding:12px;border-radius:6px;border:1px solid #ebf2f7}
.login-panel h3{margin:0 0 8px 0}
.login-panel input, .login-panel textarea{width:100%;padding:8px;border:1px solid #e6eef8;border-radius:6px;margin-top:6px}
.section{margin-top:18px}
.section-title{margin:12px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.card{background:var(--card);padding:12px;border-radius:8px;border:1px solid #eef6fb}
.thumb{height:120px;background:#f1f6ff;border-radius:6px;display:flex;align-items:center;justify-content:center;font-weight:700}
.site-footer{padding:18px 0;text-align:center;color:var(--muted);margin-top:26px}
.profile-card{display:flex;gap:12px;align-items:center}
.avatar{width:64px;height:64px;border-radius:8px;background:linear-gradient(135deg,#9fd6ff,#dcecff);display:flex;align-items:center;justify-content:center;font-weight:800}
.forum-list{list-style:none;padding:0;margin:0}
.forum-list li{padding:10px 0;border-bottom:1px solid #f1f6fb}

@media(max-width:780px){.hero{flex-direction:column}.login-panel{width:100%}}