:root {
    --brand: #1f7ae0; --brand-2: #1465c0;
    --bg: #f3f6fa; --card: #ffffff;
    --text: #14202b; --text-muted: #5b6878; --border: #e3e8ef;
    --radius: 14px;
    --shadow: 0 4px 14px rgba(20,32,43,.06), 0 1px 3px rgba(20,32,43,.04);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);line-height:1.55;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}

.container{max-width:720px;margin:0 auto;padding:0 16px}

.topbar{background:var(--card);border-bottom:1px solid var(--border);padding:14px 0}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:1.05rem}
.brand:hover{text-decoration:none}
.brand-mark{width:24px;height:24px;border-radius:6px;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
    box-shadow:0 2px 8px rgba(31,122,224,.35)}
.topbar-tag{color:var(--text-muted);font-size:.875rem}

main.container{padding-top:32px;padding-bottom:32px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
    padding:28px;box-shadow:var(--shadow)}
.card.center{text-align:center}
.card h1{font-size:1.5rem;margin:12px 0 8px;letter-spacing:-.01em}
.card .lead{font-size:1.05rem;color:var(--text-muted);margin:8px 0 16px}
.logo-mark{margin-bottom:6px}

.info-box{background:#f3f8ff;border:1px solid #d8e6fb;border-radius:10px;padding:14px 16px;
    margin:18px auto;max-width:540px;color:#1c4a82;text-align:left;font-size:.95rem}

.file-card{padding:0;overflow:hidden}
.file-head{display:flex;align-items:center;gap:16px;padding:22px 24px;
    background:linear-gradient(180deg,#fbfdff 0%,#fff 100%);border-bottom:1px solid var(--border)}
.file-icon{flex:none;width:64px;height:64px;border-radius:12px;display:flex;align-items:center;
    justify-content:center;color:white;font-weight:700;font-size:.78rem;letter-spacing:.5px;
    background:linear-gradient(135deg,#6b7280 0%,#4b5563 100%)}
.fi-pdf{background:linear-gradient(135deg,#ef4444,#b91c1c)}
.fi-doc{background:linear-gradient(135deg,#2563eb,#1e40af)}
.fi-xls{background:linear-gradient(135deg,#16a34a,#15803d)}
.fi-ppt{background:linear-gradient(135deg,#ea580c,#c2410c)}
.fi-zip{background:linear-gradient(135deg,#a16207,#854d0e)}
.fi-img{background:linear-gradient(135deg,#db2777,#9d174d)}
.fi-vid{background:linear-gradient(135deg,#7c3aed,#5b21b6)}
.fi-aud{background:linear-gradient(135deg,#0891b2,#155e75)}

.file-headinfo{flex:1;min-width:0}
.file-name{font-size:1.1rem;font-weight:600;word-break:break-all;overflow-wrap:anywhere;margin-bottom:4px}
.file-size{color:var(--text-muted);font-size:.92rem}

.file-meta{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;padding:22px 24px;margin:0;
    border-bottom:1px solid var(--border)}
.file-meta>div{min-width:0}
.file-meta dt{color:var(--text-muted);font-size:.78rem;text-transform:uppercase;
    letter-spacing:.05em;margin-bottom:2px}
.file-meta dd{margin:0;font-size:.97rem;word-break:break-word}

.file-actions{display:flex;flex-direction:column;align-items:stretch;gap:10px;padding:20px 24px 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 22px;
    border-radius:10px;font-weight:600;font-size:1rem;border:1px solid transparent;cursor:pointer;
    text-decoration:none;transition:transform .04s,box-shadow .15s,background .15s}
.btn-primary{background:linear-gradient(180deg,var(--brand) 0%,var(--brand-2) 100%);color:white;
    box-shadow:0 4px 12px rgba(31,122,224,.28)}
.btn-primary:hover{text-decoration:none;box-shadow:0 6px 16px rgba(31,122,224,.35)}
.btn-primary:active{transform:translateY(1px)}
.btn-ico{font-size:1.15rem;line-height:1}

.notice{margin-top:16px;background:#fff8eb;border:1px solid #f3dca7;color:#7a5a12;
    padding:14px 16px;border-radius:10px;font-size:.92rem}

.muted{color:var(--text-muted)} .small{font-size:.875rem}

.status-badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:.85rem;
    font-weight:700;letter-spacing:.04em;margin-bottom:8px}
.status-expired{background:#fee2e2;color:#b91c1c}
.status-notfound{background:#f3f4f6;color:#4b5563}
.status-warning{background:#fef3c7;color:#92400e}

.footer{margin-top:32px;border-top:1px solid var(--border);background:#fafbfd;padding:16px 0}
.footer-inner{display:flex;flex-wrap:wrap;gap:8px;color:var(--text-muted);font-size:.875rem;justify-content:center}
.footer-sep{opacity:.5}

@media (max-width:540px){
    .card{padding:22px 18px}
    .file-head{padding:18px 16px}
    .file-meta{grid-template-columns:1fr;padding:18px 16px}
    .file-actions{padding:16px 16px 18px}
    .topbar-tag{display:none}
}
.reason-list{
    text-align:left;
    max-width:380px;
    margin:8px auto 16px;
    padding-left:20px;
    color:var(--text-muted);
    font-size:.95rem;
}
.reason-list li{margin-bottom:4px}