:root{--bg-main:#0c0e12;--bg-card:#161b22bf;--bg-card-hover:#1e2630e6;--bg-subtle:#161b22;--border-subtle:#ffffff14;--border-focus:#e6b45099;--text-primary:#f0f3f6;--text-secondary:#9aa7b5;--text-muted:#657383;--accent-gold:#e5b358;--accent-gold-glow:#e5b35840;--accent-emerald:#10b981;--accent-blue:#3b82f6;--shop-2ndstreet:#ef4444;--shop-ragtag:#f59e0b;--shop-kindal:#6366f1;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-full:9999px;--shadow-sm:0 2px 8px #0000004d;--shadow-md:0 8px 24px #00000073;--shadow-glow:0 0 25px #e5b35826;--font-sans:"Plus Jakarta Sans", "Noto Sans JP", -apple-system, sans-serif;--transition:all .25s cubic-bezier(.16, 1, .3, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-primary);-webkit-font-smoothing:antialiased;background-image:radial-gradient(at 0 0,#e5b3580a 0,#0000 50%),radial-gradient(at 100% 100%,#3b82f60a 0,#0000 50%);background-attachment:fixed;min-height:100vh;line-height:1.5}#app{flex-direction:column;min-height:100vh;display:flex}.app-header{z-index:50;-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-subtle);background:#0c0e12d1;padding:14px 20px;position:sticky;top:0}.header-container{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;display:flex}.logo-area{flex-direction:column;display:flex}.logo-badge{letter-spacing:.08em;color:var(--accent-gold);border-radius:var(--radius-full);background:#e5b3581f;width:fit-content;margin-bottom:2px;padding:2px 6px;font-size:.65rem;font-weight:700;display:inline-block}.logo-title{letter-spacing:-.02em;color:#fff;align-items:baseline;gap:2px;font-size:1.45rem;font-weight:800;display:flex}.logo-title span{color:var(--accent-gold);font-size:1.1rem}.logo-subtitle{color:var(--text-muted);letter-spacing:.02em;font-size:.72rem}.header-actions{align-items:center;gap:10px;display:flex}.btn-icon-label{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-primary);border-radius:var(--radius-full);cursor:pointer;transition:var(--transition);align-items:center;gap:6px;padding:8px 14px;font-size:.85rem;font-weight:600;display:flex}.btn-icon-label:hover{background:var(--bg-card-hover);border-color:var(--border-focus);transform:translateY(-1px)}.btn-icon-label .badge{background:var(--accent-gold);color:#000;border-radius:var(--radius-full);padding:1px 6px;font-size:.7rem;font-weight:700}.btn-icon{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-full);cursor:pointer;width:38px;height:38px;transition:var(--transition);justify-content:center;align-items:center;font-size:1rem;display:flex}.btn-icon:hover{background:var(--bg-card-hover);color:var(--text-primary)}.main-container{flex-direction:column;flex:1;gap:24px;width:100%;max-width:1200px;margin:0 auto;padding:24px 20px 60px;display:flex}.search-section{flex-direction:column;gap:14px;display:flex}.search-box-wrapper{width:100%}.search-input-group{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:var(--transition);box-shadow:var(--shadow-sm);align-items:center;padding:6px 8px 6px 16px;display:flex}.search-input-group:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px #e5b35826, var(--shadow-md);background:#1a202af2}.search-icon{color:var(--text-muted);margin-right:10px;font-size:1.1rem}.search-input-group input{color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;font-family:inherit;font-size:1rem}.search-input-group input::placeholder{color:var(--text-muted)}.btn-clear{color:var(--text-muted);cursor:pointer;border-radius:var(--radius-full);background:0 0;border:none;padding:4px 8px;font-size:1rem}.btn-clear:hover{color:var(--text-primary)}.btn-search{background:linear-gradient(135deg, var(--accent-gold), #cb9536);color:#0a0c10;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);border:none;padding:10px 22px;font-family:inherit;font-size:.92rem;font-weight:700}.btn-search:hover{filter:brightness(1.1);transform:scale(1.02)}.quick-tags-scroll{scrollbar-width:none;align-items:center;gap:8px;padding-bottom:4px;display:flex;overflow-x:auto}.quick-tags-scroll::-webkit-scrollbar{display:none}.quick-tag-label{color:var(--text-muted);white-space:nowrap;font-size:.78rem;font-weight:600}.quick-tag{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-full);cursor:pointer;white-space:nowrap;transition:var(--transition);padding:4px 12px;font-family:inherit;font-size:.8rem;font-weight:500}.quick-tag:hover{color:var(--text-primary);background:var(--bg-card-hover);border-color:#fff3}.filter-bar{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;display:flex}.custom-select{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;outline:none;padding:6px 12px;font-family:inherit;font-size:.82rem;font-weight:500}.custom-select:focus{border-color:var(--border-focus);color:var(--text-primary)}.buyback-banner{border-radius:var(--radius-lg);box-shadow:var(--shadow-glow);transition:var(--transition);background:linear-gradient(135deg,#1e2634d9 0%,#12161ef2 100%);border:1px solid #e5b35859;padding:22px 26px;position:relative;overflow:hidden}.buyback-banner:before{content:"";pointer-events:none;background:radial-gradient(circle,#e5b35826 0%,#0000 70%);border-radius:50%;width:140px;height:140px;position:absolute;top:-50px;right:-50px}.buyback-badge{letter-spacing:.05em;color:#0c0e12;background:var(--accent-gold);border-radius:var(--radius-sm);margin-bottom:8px;padding:3px 8px;font-size:.72rem;font-weight:700;display:inline-block}.buyback-title{color:#fff;margin-bottom:6px;font-size:1.18rem;font-weight:700}.buyback-title .highlight{color:var(--accent-gold);text-underline-offset:4px;text-decoration:underline}.buyback-desc{color:var(--text-secondary);max-width:720px;margin-bottom:16px;font-size:.86rem}.buyback-cta-group{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.btn-buyback{border-radius:var(--radius-md);transition:var(--transition);align-items:center;gap:6px;padding:10px 18px;font-size:.88rem;font-weight:700;text-decoration:none;display:inline-flex}.btn-buyback.primary{color:#fff;background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 4px 14px #ef444459}.btn-buyback.primary:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 6px 20px #ef444473}.btn-buyback.primary .cta-sub{opacity:.9;font-size:.72rem;font-weight:400}.btn-buyback.secondary{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-primary)}.btn-buyback.secondary:hover{background:var(--bg-card-hover);border-color:#fff3}.results-header{border-bottom:1px solid var(--border-subtle);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding-bottom:8px;display:flex}.results-meta{align-items:center;gap:10px;display:flex}.results-count{color:var(--text-primary);font-size:.95rem;font-weight:700}.active-tag{color:var(--text-secondary);border-radius:var(--radius-sm);background:#ffffff14;padding:2px 8px;font-size:.74rem}.btn-save-alert{color:var(--accent-gold);border-radius:var(--radius-full);cursor:pointer;transition:var(--transition);background:#e5b3581a;border:1px solid #e5b3584d;padding:6px 14px;font-family:inherit;font-size:.82rem;font-weight:600}.btn-save-alert:hover{background:#e5b35833;transform:translateY(-1px)}.items-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;display:grid}.item-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);transition:var(--transition);flex-direction:column;display:flex;position:relative;overflow:hidden}.item-card:hover{box-shadow:var(--shadow-md);background:var(--bg-card-hover);border-color:#ffffff2e;transform:translateY(-4px)}.item-thumbnail-wrap{aspect-ratio:1;background:#111419;width:100%;position:relative;overflow:hidden}.item-thumbnail{object-fit:cover;width:100%;height:100%;transition:transform .4s}.item-card:hover .item-thumbnail{transform:scale(1.05)}.shop-badge{border-radius:var(--radius-sm);color:#fff;padding:3px 8px;font-size:.7rem;font-weight:700;position:absolute;top:10px;left:10px;box-shadow:0 2px 6px #0006}.shop-badge.jumblestore{background:var(--shop-2ndstreet)}.shop-badge.ragtag{background:var(--shop-ragtag)}.shop-badge.kind-u{background:var(--shop-kindal)}.item-condition-badge{border-radius:var(--radius-sm);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff;background:#000000a6;padding:2px 6px;font-size:.68rem;font-weight:700;position:absolute;top:10px;right:10px}.item-body{flex-direction:column;flex:1;gap:8px;padding:14px;display:flex}.item-brand{letter-spacing:.05em;color:var(--accent-gold);text-transform:uppercase;font-size:.74rem;font-weight:700}.item-title{color:var(--text-primary);-webkit-line-clamp:2;-webkit-box-orient:vertical;height:2.8em;font-size:.88rem;font-weight:600;line-height:1.4;display:-webkit-box;overflow:hidden}.item-price-row{justify-content:space-between;align-items:baseline;margin-top:auto;padding-top:6px;display:flex}.item-price{color:#fff;letter-spacing:-.01em;font-size:1.18rem;font-weight:800}.item-reward-estimate{color:var(--accent-emerald);font-size:.7rem;font-weight:600}.item-actions{gap:6px;margin-top:6px;display:flex}.btn-buy-link{text-align:center;color:#0c0e12;border-radius:var(--radius-md);transition:var(--transition);background:#fff;flex:1;justify-content:center;align-items:center;gap:4px;padding:8px 10px;font-size:.82rem;font-weight:700;text-decoration:none;display:flex}.btn-buy-link:hover{background:var(--accent-gold);transform:translateY(-1px)}.item-pr-label{color:#fff;background:#dc303a;border-radius:3px;padding:2px 4px;font-size:.62rem;line-height:1}.app-info-footer{flex-direction:column;gap:16px;margin-top:20px;display:flex}.info-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:18px 20px}.info-card h3{color:var(--text-primary);margin-bottom:6px;font-size:.95rem;font-weight:700}.info-card p{color:var(--text-secondary);font-size:.82rem;line-height:1.6}.affiliate-notice{color:var(--text-secondary);text-align:center;font-size:.72rem;line-height:1.4}.modal-overlay{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:100;opacity:1;background:#000000bf;justify-content:center;align-items:center;padding:16px;transition:opacity .2s;display:flex;position:fixed;inset:0}.modal-overlay.hidden{opacity:0;pointer-events:none}.modal-card{border:1px solid var(--border-subtle);border-radius:var(--radius-lg);width:100%;max-width:500px;max-height:90vh;box-shadow:var(--shadow-md);background:#151921;flex-direction:column;display:flex;overflow:hidden}.modal-header{border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-header h2{color:#fff;font-size:1.1rem;font-weight:700}.btn-close-modal{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:4px;font-size:1.2rem}.btn-close-modal:hover{color:#fff}.modal-body{flex-direction:column;gap:16px;padding:20px;display:flex;overflow-y:auto}.modal-desc{color:var(--text-secondary);font-size:.82rem;line-height:1.5}.alerts-list{flex-direction:column;gap:10px;display:flex}.alert-item{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);justify-content:space-between;align-items:center;padding:12px 14px;display:flex}.alert-query{color:#fff;font-size:.9rem;font-weight:600}.alert-shop{color:var(--accent-gold);font-size:.75rem}.btn-delete-alert{color:var(--text-muted);cursor:pointer;background:0 0;border:none;padding:4px}.btn-delete-alert:hover{color:#ef4444}.btn-action{background:linear-gradient(135deg, var(--accent-gold), #cb9536);color:#0c0e12;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);border:none;padding:12px 20px;font-family:inherit;font-size:.9rem;font-weight:700}.btn-action:hover{filter:brightness(1.1)}.btn-action.full{width:100%}.btn-secondary{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-md);cursor:pointer;padding:10px 16px;font-family:inherit;font-size:.88rem}.form-group{flex-direction:column;gap:6px;display:flex}.form-group label{color:var(--text-primary);font-size:.82rem;font-weight:600}.form-group input{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-primary);border-radius:var(--radius-md);outline:none;padding:10px 12px;font-family:inherit;font-size:.9rem}.form-group input:focus{border-color:var(--border-focus)}.field-hint{color:var(--text-muted);font-size:.72rem}.form-actions{gap:10px;margin-top:6px;display:flex}.check-result-notice{border-radius:var(--radius-md);color:#34d399;background:#10b98126;border:1px solid #10b9814d;margin-top:10px;padding:10px 12px;font-size:.82rem}.toast{color:#fff;box-shadow:var(--shadow-md);border-radius:var(--radius-full);z-index:200;transition:var(--transition);background:#1f2937;border:1px solid #ffffff26;padding:10px 20px;font-size:.85rem;font-weight:600;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toast.hidden{opacity:0;pointer-events:none;transform:translate(-50%,20px)}.hidden{display:none!important}@media (width<=640px){.header-container{flex-wrap:wrap;gap:10px}.items-grid{grid-template-columns:repeat(2,1fr);gap:12px}.buyback-banner{padding:16px}.buyback-title{font-size:1.05rem}.btn-buyback{justify-content:center;width:100%}}.connection-notice{border-radius:var(--radius-md);background:#e5b35812;border:1px solid #e5b3584d;padding:16px 20px;font-size:.85rem}.connection-notice strong{color:var(--accent-gold)}.connection-notice p{color:var(--text-secondary);margin-top:6px}.shop-badge.mercari{background:#df353f}.item-source{color:var(--text-secondary);font-size:.7rem}.item-condition{color:var(--text-secondary);font-size:.72rem}.item-size{color:var(--text-primary);font-size:.78rem;font-weight:600}.empty-state{text-align:center;color:var(--text-secondary);grid-column:1/-1;padding:48px 16px}.empty-state p+p{margin-top:8px;font-size:.85rem}.search-error{border-radius:var(--radius-md);border:1px solid #ef4444;justify-content:space-between;align-items:center;gap:12px;padding:16px;display:flex}.load-more{align-self:center;min-width:180px}.saved-search{text-align:left;font:inherit;cursor:pointer;background:0 0;border:0;flex-direction:column;gap:4px;min-width:0;display:flex}.auth-panel{flex-direction:column;gap:10px;display:flex}.auth-panel label{font-size:.82rem;font-weight:600}.auth-panel input{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-primary);border-radius:var(--radius-md);font:inherit;padding:10px 12px}.alert-query{overflow-wrap:anywhere}.image-unavailable{place-items:center;display:grid}.image-unavailable:after{content:"画像を表示できません";color:var(--text-secondary);font-size:.8rem}button:disabled{opacity:.6;cursor:wait}button:focus-visible,a:focus-visible,select:focus-visible{outline:2px solid var(--accent-gold);outline-offset:3px}.modal-overlay{width:100%;max-width:none;height:100%;max-height:none;color:var(--text-primary);border:0}.modal-overlay:not([open]){display:none}.modal-overlay::backdrop{background:#0000008c}.search-input-group input,.item-card{min-width:0}.detail-filters{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);grid-template-columns:repeat(4,minmax(130px,1fr)) auto;align-items:end;gap:10px;padding:14px;display:grid}.detail-filters label{color:var(--text-secondary);flex-direction:column;gap:5px;font-size:.75rem;font-weight:600;display:flex}.detail-filters input{background:var(--bg-card);border:1px solid var(--border-subtle);min-width:0;color:var(--text-primary);font:inherit;border-radius:var(--radius-md);padding:7px 10px;font-size:.82rem}.detail-filters .field-hint{grid-column:1/-1}.filter-actions{gap:8px;display:flex}.filter-actions button{white-space:nowrap;padding:8px 12px}.source-status{border-radius:var(--radius-md);color:var(--text-secondary);background:#3b82f614;border:1px solid #3b82f659;padding:10px 14px;font-size:.82rem}.connection-notice .btn-action{margin-top:12px}@media (width<=640px){.search-input-group{padding-left:10px}.search-input-group input{font-size:.88rem}.btn-search{flex-shrink:0;padding:10px 12px}.search-icon{display:none}.item-body{padding:10px}.item-price{font-size:1.05rem}.btn-buy-link{font-size:.72rem}.toast{border-radius:var(--radius-md);width:max-content;max-width:calc(100vw - 32px)}.search-error{flex-wrap:wrap}.detail-filters{grid-template-columns:1fr 1fr}.filter-actions,.detail-filters .field-hint{grid-column:1/-1}.filter-actions button{flex:1}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important}}