:root {
    --gt-bg: #0d1117;
    --gt-surface: #161b22;
    --gt-border: #30363d;
    --gt-gold: #dfac6c;
    --gt-gold-bright: #fce0ad;
    --gt-gold-gradient: linear-gradient(135deg, #dfac6c 0%, #fce0ad 100%);
    --gt-text-main: #f0f6fc;
    --gt-text-sub: #8b949e;
    --gt-price: #f43f5e;
    --gt-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    --gt-radius: 0px;
}
body { margin: 0; background-color: var(--gt-bg); color: var(--gt-text-main); font-family: "Georgia", "Times New Roman", "PingFang SC", serif; -webkit-font-smoothing: antialiased; }
.gt-header { background-color: var(--gt-surface); border-bottom: 3px double var(--gt-gold); padding: 20px 0; }
.gt-nav-inner { max-width: 1400px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; box-sizing: border-box; }
.gt-logo img { height: 26px; filter: sepia(1) saturate(3) brightness(1.2); }
.gt-menu { display: flex; gap: 35px; }
.gt-menu a { text-decoration: none; color: var(--gt-text-sub); font-weight: 700; font-size: 13px; transition: 0.3s; text-transform: uppercase; letter-spacing: 1px; }
.gt-menu a:hover { color: var(--gt-gold); text-shadow: 0 0 5px var(--gt-gold); }
.gt-container { max-width: 1400px; margin: 40px auto; padding: 0 24px; box-sizing: border-box; }
.gt-notice { background: var(--gt-surface); border-radius: var(--gt-radius); border: 3px double var(--gt-gold); padding: 18px 24px; box-shadow: var(--gt-shadow); font-size: 13px; color: var(--gt-text-main); line-height: 1.6; display: flex; align-items: center; gap: 12px; }
.gt-notice i { color: var(--gt-gold); font-size: 18px; }
.gt-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 14px; }
.gt-card { background-color: var(--gt-surface); border: 1px solid var(--gt-border); border-radius: var(--gt-radius); padding: 16px; text-decoration: none; transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); box-shadow: var(--gt-shadow); display: flex; flex-direction: column; position: relative; overflow: hidden; }
.gt-card::after { content: ""; position: absolute; inset: 4px; border: 1px solid transparent; transition: all 0.3s ease-in-out; pointer-events: none; }
.gt-card:hover { transform: translateY(-3px); border-color: var(--gt-gold); }
.gt-card:hover::after { border-color: var(--gt-gold); opacity: 0.5; }
.gt-img-box { width: 100%; aspect-ratio: 1; background: #0d1117; border-radius: 0px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; border: 1px solid var(--gt-border); }
.gt-img-box img { width: 60%; height: 60%; object-fit: contain; opacity: 0.85; transition: 0.3s; }
.gt-card:hover .gt-img-box img { opacity: 1; transform: scale(1.04); }
.gt-name { font-size: 13px; font-weight: 700; color: var(--gt-text-main); height: 38px; line-height: 1.4; overflow: hidden; margin-bottom: 12px; font-family: "PingFang SC", sans-serif; }
.gt-meta { display: flex; justify-content: space-between; align-items: center; margin-top: auto; border-top: 1px solid var(--gt-border); padding-top: 10px; }
.gt-price { color: var(--gt-gold); font-weight: 800; font-size: 16px; }
.gt-sell { font-size: 11px; color: var(--gt-text-sub); }
.gt-tag { position: absolute; top: 12px; left: 12px; background: var(--gt-gold-gradient); color: #000; font-size: 10px; padding: 2px 6px; border-radius: 0; font-weight: bold; }
.gt-detail-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; }
.gt-box { background: var(--gt-surface); border-radius: var(--gt-radius); padding: 35px; border: 1px solid var(--gt-border); box-shadow: var(--gt-shadow); }
.gt-box::before { content: ""; position: absolute; inset: 4px; border: 1px solid var(--gt-border); pointer-events: none; opacity: 0.3; }
.gt-h1 { font-size: 24px; font-weight: 800; margin: 0 0 20px 0; color: var(--gt-text-main); font-family: "PingFang SC", sans-serif; border-bottom: 1px solid var(--gt-border); padding-bottom: 12px; }
.gt-input { width: 100%; height: 46px; background: #0d1117; border: 1px solid var(--gt-border); border-radius: 0px; padding: 0 15px; font-size: 14px; box-sizing: border-box; outline: none; transition: 0.3s; margin-top: 8px; color: var(--gt-text-main); font-family: "PingFang SC", sans-serif; }
.gt-input:focus { border-color: var(--gt-gold); background: var(--gt-surface); }
.gt-label { display: block; font-size: 12px; font-weight: 700; color: var(--gt-text-sub); font-family: "PingFang SC", sans-serif; }
.gt-btn { width: 100%; height: 50px; background: var(--gt-gold-gradient); color: #000; border: none; border-radius: 0px; font-size: 15px; font-weight: bold; cursor: pointer; transition: 0.3s; margin-top: 20px; font-family: "PingFang SC", sans-serif; text-transform: uppercase; letter-spacing: 1px; }
.gt-btn:hover { background: var(--gt-text-main); color: var(--gt-gold); box-shadow: 0 0 15px rgba(223, 172, 108, 0.2); }
.gt-footer { background: var(--gt-surface); border-top: 3px double var(--gt-gold); padding: 50px 0; margin-top: 80px; text-align: center; }
@media (max-width: 1400px) { .gt-grid { grid-template-columns: repeat(5, 1fr); } }
@media (max-width: 1000px) { .gt-grid { grid-template-columns: repeat(3, 1fr); } .gt-detail-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .gt-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } }