.dhc-root{color:var(--dh-text,#e6e9f2)}
.dhc-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:16px}
.dhc-input{background:var(--dh-soft,#111827);border:1px solid var(--dh-border,#242c46);border-radius:10px;color:inherit;padding:10px 12px;font:inherit;width:100%;box-sizing:border-box}
.dhc-bar .dhc-input{flex:1 1 220px;width:auto}
.dhc-code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;margin:8px 0}
.dhc-chips{display:flex;gap:6px;flex-wrap:wrap}
.dhc-chips button,.dhc-btn{background:var(--dh-accent,#6366f1);color:#fff;border:0;border-radius:999px;padding:8px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block}
.dhc-chips button{background:var(--dh-card2,#1a2138);color:var(--dh-dim,#8a93b2)}
.dhc-chips button.is-on{background:var(--dh-accent,#6366f1);color:#fff}
.dhc-btn-ghost{background:transparent;border:1px solid var(--dh-border,#242c46);color:var(--dh-text,#e6e9f2)}
.dhc-btn:disabled{opacity:.6;cursor:wait}
.dhc-check{color:var(--dh-dim,#8a93b2);display:flex;gap:6px;align-items:center}
.dhc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.dhc-card{display:flex;flex-direction:column;gap:8px}
.dhc-card h3{margin:0}.dhc-card p{color:var(--dh-dim,#8a93b2);margin:0;flex:1}
.dhc-card footer{display:flex;gap:12px;flex-wrap:wrap;color:var(--dh-dim,#8a93b2);font-size:13px}
.dhc-card-top{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.dhc-lvl,.dhc-tag{font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;background:var(--dh-card2,#1a2138)}
.dhc-lvl.easy,.dhc-tag.ok,.dhc-tag.accepted{color:#22c55e}.dhc-lvl.medium,.dhc-tag.wait,.dhc-tag.pending{color:#f59e0b}.dhc-lvl.hard,.dhc-tag.rejected{color:#ef4444}.dhc-tag.off{color:var(--dh-dim,#8a93b2)}
.dhc-more{text-align:center;margin-top:16px}
.dhc-detail{margin-top:12px}.dhc-content{line-height:1.7}
.dhc-form{margin-top:20px}.dhc-form .dhc-input{margin:6px 0}
.dhc-history ul{list-style:none;padding:0;margin:0}.dhc-history li{padding:8px 0;border-top:1px solid var(--dh-border,#242c46)}
.dhc-podium{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0}
.dhc-pod{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;text-decoration:none;color:inherit}
.dhc-pod img{border-radius:50%}.dhc-pod.p1{border-color:#f59e0b}.dhc-medal{font-size:28px}
.dhc-table{width:100%;border-collapse:collapse}.dhc-table th,.dhc-table td{text-align:left;padding:10px;border-bottom:1px solid var(--dh-border,#242c46)}
.dhc-table td a{color:inherit;text-decoration:none;display:flex;align-items:center;gap:8px}.dhc-table img{border-radius:50%}
.dhc-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--dh-card2,#1a2138);border:1px solid var(--dh-border,#242c46);color:var(--dh-text,#e6e9f2);padding:12px 18px;border-radius:12px;z-index:9999}
@media(max-width:600px){.dhc-podium{grid-template-columns:1fr}}