:root{--bg: #0f172a;--panel: #1e293b;--panel-hover: #273449;--text: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--border: #334155}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,PingFang SC,Microsoft YaHei,sans-serif}.portal{min-height:100vh;background:linear-gradient(160deg,#0f172a,#111c33);color:var(--text);display:flex;flex-direction:column;padding:32px 24px}.portal-header{max-width:960px;margin:0 auto 28px;width:100%}.brand{display:flex;align-items:center;gap:16px}.logo{font-size:40px}h1{margin:0;font-size:24px;font-weight:700}.subtitle{margin:4px 0 0;color:var(--muted);font-size:13px}.grid{max-width:960px;margin:0 auto;width:100%;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;flex:1}.card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:18px;display:flex;align-items:center;gap:14px;text-decoration:none;color:inherit;transition:transform .12s ease,background .12s ease,border-color .12s ease}.card:hover{background:var(--panel-hover);border-color:var(--accent);transform:translateY(-2px)}.card-icon{font-size:30px;width:48px;text-align:center}.card-body{flex:1;min-width:0}.card-title{font-size:16px;font-weight:600}.card-desc{font-size:12px;color:var(--muted);margin-top:2px}.card-url{font-size:11px;color:#64748b;margin-top:6px;word-break:break-all}.card-arrow{color:var(--accent);font-size:20px}.portal-footer{max-width:960px;margin:28px auto 0;width:100%;color:#64748b;font-size:12px;text-align:center}