* { box-sizing: border-box; margin: 0; padding: 0; }
body.fortress-body { background-color: #f8f9fa; color: #333333; font-family: "PingFang SC", "Helvetica Neue", Arial, sans-serif; overflow-x: hidden; width: 100%; }
a { color: inherit; text-decoration: none; }
.fortress-container { max-width: 1200px; margin: 0 auto; padding: 0 15px; width: 100%; }
.fortress-logobar { background: #ffffff; padding: 15px 0; border-bottom: 1px solid #f0f0f0; }
.fortress-logobar-wrap { display: flex; justify-content: space-between; align-items: center; }
.fortress-logo img { max-height: 50px; max-width: 200px; object-fit: contain; }
.fortress-phone { color: #d9232e; font-weight: bold; font-size: 18px; }
.fortress-navbar { background: #d9232e; height: 50px; }
.fortress-nav { display: flex; list-style: none; height: 50px; align-items: center; }
.fortress-nav-item a { display: block; padding: 0 22px; height: 50px; line-height: 50px; color: #ffffff; font-size: 15px; font-weight: bold; transition: background 0.3s; }
.fortress-nav-item a:hover { background: #b8141f; }
.fortress-notice { background: #ffffff; border-left: 4px solid #d9232e; border-radius: 4px; box-shadow: 0 2px 8px rgba(0,0,0,0.04); margin: 20px auto; padding: 12px 20px; font-size: 14px; color: #555555; }
.fortress-sec-title { text-align: center; font-size: 22px; font-weight: 700; color: #111111; margin: 35px 0 20px; position: relative; }
.fortress-sec-title::after { content: ""; display: block; width: 40px; height: 3px; background: #d9232e; margin: 8px auto 0; }
.fortress-red-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
@media (max-width: 768px) { .fortress-red-grid { grid-template-columns: repeat(1, 1fr); } }
.fortress-red-card { background: #ffffff; border: 1px solid #e9ecef; border-radius: 6px; overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; }
.fortress-red-card:hover { transform: translateY(-4px); box-shadow: 0 8px 20px rgba(217,35,46,0.12); }
.fortress-red-card-header { background: #d9232e; color: #ffffff; padding: 12px 15px; font-weight: bold; font-size: 16px; text-align: center; }
.fortress-red-card-body { padding: 20px; display: flex; flex-direction: column; justify-content: space-between; }
.fortress-about-sec { background: #2b303b; color: #ffffff; padding: 40px 0; margin-bottom: 30px; border-radius: 8px; }
.fortress-case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
@media (max-width: 768px) { .fortress-case-grid { grid-template-columns: repeat(2, 1fr); } }
.fortress-case-card { background: #ffffff; border: 1px solid #eee; border-radius: 6px; padding: 15px; text-align: center; transition: all 0.3s; }
.fortress-case-card:hover { border-color: #d9232e; }
.fortress-adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 30px; }
@media (max-width: 768px) { .fortress-adv-grid { grid-template-columns: repeat(1, 1fr); } }
.fortress-adv-card { background: #ffffff; border: 1px solid #e0e0e0; border-top: 3px solid #d9232e; padding: 20px; border-radius: 4px; }
.fortress-red-bg-sec { background: #d9232e; padding: 30px; border-radius: 8px; margin-bottom: 30px; }
.fortress-client-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
@media (max-width: 768px) { .fortress-client-grid { grid-template-columns: repeat(2, 1fr); } }
.fortress-client-card { background: #ffffff; border-radius: 4px; padding: 10px; text-align: center; font-size: 12px; }
.fortress-three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 30px; }
@media (max-width: 768px) { .fortress-three-col { grid-template-columns: repeat(1, 1fr); } }
.fortress-list-card { background: #ffffff; border: 1px solid #e0e0e0; border-radius: 6px; padding: 20px; }
.fortress-table { width: 100%; border-collapse: collapse; background: #ffffff; border-radius: 6px; overflow: hidden; margin-bottom: 30px; }
.fortress-table th, .fortress-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #f0f0f0; font-size: 14px; }
.fortress-table th { background: #f1f3f5; color: #495057; font-weight: 600; }
.fortress-btn { background: #d9232e; color: #ffffff; padding: 6px 16px; border-radius: 4px; font-size: 13px; font-weight: 500; display: inline-block; border: none; cursor: pointer; transition: background 0.3s; }
.fortress-btn:hover { background: #b8141f; }
.fortress-price { color: #d9232e; font-weight: bold; font-size: 18px; }
.fortress-footer { background: #1a1a1a; color: #999999; padding: 40px 0 20px; margin-top: 50px; text-align: center; font-size: 14px; }
.fortress-footer-links a { color: #cccccc; margin: 0 10px; }
.fortress-footer-sep { color: #444444; }
.fortress-copyright { margin-top: 20px; font-size: 13px; color: #666666; }
.fortress-badge { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.fortress-badge-auto { background: #ffe3e3; color: #d9232e; }
.fortress-badge-manual { background: #f1f3f5; color: #495057; }
.fortress-detail-wrap { background: #ffffff; border-radius: 6px; padding: 30px; margin: 30px auto; border: 1px solid #e9ecef; }