body { background-color: #0f1113; color: #d1d5db; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; margin: 0; line-height: 1.6; }
.portal-container { max-width: 1000px; margin: 0 auto; padding: 30px 20px; }
.signal-strip { background: #1a1c1e; border: 1px solid #2d2d2f; border-left: 4px solid #d4af37; padding: 18px 25px; border-radius: 4px; margin-bottom: 40px; display: flex; align-items: center; box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.marker-spark { width: 10px; height: 10px; background: #d4af37; margin-right: 18px; transform: rotate(45deg); flex-shrink: 0; box-shadow: 0 0 10px rgba(212,175,55,0.4); }
.nexus-heading { font-size: 14px; font-weight: 800; color: #d4af37; margin-bottom: 25px; text-transform: uppercase; letter-spacing: 2px; display: flex; align-items: center; }
.nexus-heading::after { content: ""; flex: 1; height: 1px; background: #2d2d2f; margin-left: 15px; }

/* 横向 Ribbon 大卡片列表布局 */
.ribbon-item { background: #16181a; border: 1px solid #2d2d2f; margin-bottom: 15px; padding: 22px 30px; display: flex; align-items: center; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); text-decoration: none; border-radius: 12px; position: relative; }
.ribbon-item:hover { border-color: #d4af37; transform: translateY(-3px); background: #1c1e21; box-shadow: 0 15px 35px rgba(0,0,0,0.5); }
.ribbon-item::after { content: "BUY"; position: absolute; right: 30px; top: 10px; font-size: 9px; color: #333; font-weight: 800; opacity: 0.3; }

.thumb-vessel { width: 54px; height: 54px; background: #000; border-radius: 8px; overflow: hidden; margin-right: 25px; border: 1px solid #2d2d2f; flex-shrink: 0; }
.thumb-vessel img { width: 100%; height: 100%; object-fit: cover; opacity: 0.9; }

.info-segment { flex: 1; min-width: 0; }
.info-segment h3 { font-size: 17px; font-weight: 700; color: #fff; margin: 0 0 5px; }
.info-segment p { font-size: 13px; color: #64748b; margin: 0; }

.price-digit { color: #d4af37; font-weight: 800; font-size: 20px; font-family: 'Inter', sans-serif; margin: 0 35px; }
.action-trigger { background: transparent; color: #d4af37; border: 1px solid #d4af37; padding: 7px 22px; border-radius: 20px; font-size: 11px; font-weight: 800; transition: 0.3s; }
.ribbon-item:hover .action-trigger { background: #d4af37; color: #000; }

.fixed-vault { height: 60px; background: rgba(0,0,0,0.9); backdrop-filter: blur(15px); border-bottom: 1px solid #2d2d2f; position: sticky; top: 0; z-index: 2000; }
.vault-inner { max-width: 1000px; margin: 0 auto; height: 100%; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; }
.link-nexus { display: flex; list-style: none; margin: 0; padding: 0; gap: 40px; }
.link-nexus a { color: #64748b; text-decoration: none; font-weight: 700; font-size: 13px; transition: 0.3s; }
.link-nexus a:hover, .link-nexus a.active-link { color: #d4af37; }
.base-footer { padding: 80px 0 50px; text-align: center; color: #334155; font-size: 11px; border-top: 1px solid #1c1e21; margin-top: 100px; text-transform: uppercase; letter-spacing: 2px; }
.capture-portal { width: 100%; height: 46px; background: #000; border: 1px solid #2d2d2f; color: #fff; padding: 0 15px; box-sizing: border-box; outline: none; transition: 0.3s; border-radius: 4px; }
.capture-portal:focus { border-color: #d4af37; }
@media (max-width: 768px) { .price-digit { margin: 0 15px; font-size: 16px; } .link-nexus { display: none; } }