:root {
    --tt-bg: #f3f4f6;
    --tt-white: #ffffff;
    --tt-dark: #111827;
    --tt-accent: #fbbf24;
    --tt-border: #111827;
    --tt-text: #374151;
}
body { margin: 0; background: var(--tt-bg); color: var(--tt-text); font-family: 'Helvetica Neue', Arial, sans-serif; }
.tt-header { background: var(--tt-white); border-bottom: 3px solid var(--tt-border); padding: 20px 0; }
.tt-nav-box { max-width: 1400px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 15px; }
.tt-logo img { height: 32px; }
.tt-menu { display: flex; gap: 40px; border-top: 1px solid #eee; padding-top: 15px; width: 100%; justify-content: center; }
.tt-menu a { text-decoration: none; color: var(--tt-dark); font-weight: 800; font-size: 13px; text-transform: uppercase; letter-spacing: 2px; transition: 0.2s; }
.tt-menu a:hover { color: var(--tt-accent); }
.tt-container { max-width: 1440px; margin: 40px auto; padding: 0 20px; box-sizing: border-box; }
.tt-notice { background: var(--tt-accent); border: 2px solid var(--tt-border); padding: 15px 30px; margin-bottom: 40px; font-weight: 700; position: relative; }
.tt-notice::after { content: ""; position: absolute; top: 5px; left: 5px; width: 100%; height: 100%; border: 2px solid var(--tt-border); z-index: -1; }
.tt-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--tt-border); border: 2px solid var(--tt-border); }
.tt-card { background: var(--tt-white); text-decoration: none; position: relative; transition: 0.2s; padding: 15px; display: flex; flex-direction: column; }
.tt-card:hover { background: var(--tt-accent); }
.tt-img-box { width: 100%; aspect-ratio: 1; background: #fff; margin-bottom: 15px; display: flex; align-items: center; justify-content: center; overflow: hidden; border: 1px solid #eee; }
.tt-img-box img { width: 80%; height: 80%; object-fit: contain; transition: 0.3s; }
.tt-card:hover img { transform: scale(1.1); }
.tt-name { font-size: 13px; font-weight: 800; color: var(--tt-dark); height: 36px; line-height: 1.4; overflow: hidden; margin-bottom: 12px; }
.tt-meta { display: flex; justify-content: space-between; align-items: baseline; }
.tt-price { color: var(--tt-dark); font-weight: 900; font-size: 18px; }
.tt-sell { font-size: 10px; color: #9ca3af; font-weight: bold; }
.tt-detail-wrap { display: grid; grid-template-columns: 1fr 420px; gap: 40px; }
.tt-box { background: var(--tt-white); border: 3px solid var(--tt-border); padding: 40px; position: relative; }
.tt-input { width: 100%; height: 50px; border: 2px solid var(--tt-border); padding: 0 15px; font-weight: 700; box-sizing: border-box; outline: none; margin-top: 10px; }
.tt-btn { width: 100%; height: 60px; background: var(--tt-dark); color: var(--tt-white); border: none; font-size: 18px; font-weight: 900; cursor: pointer; transition: 0.2s; margin-top: 30px; text-transform: uppercase; letter-spacing: 2px; }
.tt-btn:hover { background: var(--tt-accent); color: var(--tt-dark); }
@media (max-width: 1400px) { .tt-grid { grid-template-columns: repeat(5, 1fr); } }
@media (max-width: 1000px) { .tt-grid { grid-template-columns: repeat(3, 1fr); } .tt-detail-wrap { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .tt-grid { grid-template-columns: repeat(2, 1fr); } }