:root{--tg-bg: var(--tg-theme-bg-color, #ffffff);--tg-text: var(--tg-theme-text-color, #000000);--tg-hint: var(--tg-theme-hint-color, #999999);--tg-link: var(--tg-theme-link-color, #2481cc);--tg-btn: var(--tg-theme-button-color, #2481cc);--tg-btn-text: var(--tg-theme-button-text-color, #ffffff);--tg-secondary-bg: var(--tg-theme-secondary-bg-color, #f0f0f0);--tg-section-bg: var(--tg-theme-section-bg-color, #ffffff);--tg-accent: var(--tg-theme-accent-text-color, #2481cc);--tg-section-header: var(--tg-theme-section-header-text-color, #2481cc);--tg-subtitle: var(--tg-theme-subtitle-text-color, #999999);--tg-destructive: var(--tg-theme-destructive-text-color, #ff3b30)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--tg-bg);color:var(--tg-text);-webkit-font-smoothing:antialiased}.app{max-width:100%;min-height:100vh;padding:12px}.center-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:12px}.spinner{width:32px;height:32px;border:3px solid var(--tg-secondary-bg);border-top-color:var(--tg-btn);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.hint{color:var(--tg-hint);font-size:14px}.error{color:var(--tg-destructive);font-size:14px;text-align:center;padding:24px}.page-header{margin-bottom:16px}.page-title{font-size:22px;font-weight:700;margin-bottom:4px}.page-subtitle{font-size:14px;color:var(--tg-hint)}.search-bar{display:flex;gap:8px;margin-bottom:16px}.search-input{flex:1;padding:10px 14px;border:1px solid var(--tg-hint);border-radius:10px;background:var(--tg-section-bg);color:var(--tg-text);font-size:15px;outline:none}.search-input:focus{border-color:var(--tg-btn)}.search-btn{padding:10px 16px;background:var(--tg-btn);color:var(--tg-btn-text);border:none;border-radius:10px;font-size:15px;cursor:pointer}.section-chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin-bottom:16px;-webkit-overflow-scrolling:touch}.section-chip{flex-shrink:0;padding:6px 14px;border-radius:16px;background:var(--tg-secondary-bg);color:var(--tg-text);font-size:13px;border:none;cursor:pointer;white-space:nowrap}.section-chip.active{background:var(--tg-btn);color:var(--tg-btn-text)}.card{background:var(--tg-section-bg);border-radius:12px;padding:14px;margin-bottom:10px;cursor:pointer;transition:opacity .15s}.card:active{opacity:.7}.card-title{font-size:16px;font-weight:600;margin-bottom:4px}.card-brand{color:var(--tg-accent);font-weight:500}.card-meta{font-size:13px;color:var(--tg-hint);margin-bottom:6px}.card-desc{font-size:14px;color:var(--tg-subtitle);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tag{display:inline-block;padding:2px 8px;border-radius:10px;font-size:12px;margin-right:4px;margin-bottom:4px;background:var(--tg-secondary-bg);color:var(--tg-text)}.tag.maker{background:#dbeafe;color:#1d4ed8}.tag.model{background:#dcfce7;color:#15803d}.tag.year{background:#fff7ed;color:#c2410c}.tag.generation{background:#f3e8ff;color:#7c3aed}.tag.repair_type{background:#fee2e2;color:#dc2626}.tag.ecu_type{background:#cffafe;color:#0891b2}.article-header{margin-bottom:16px}.article-title{font-size:20px;font-weight:700;margin-bottom:8px}.article-info{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.info-badge{padding:3px 10px;border-radius:10px;font-size:12px;background:var(--tg-secondary-bg)}.info-badge.section{background:#dbeafe;color:#1d4ed8}.info-badge.work-type{background:#fff7ed;color:#c2410c}.article-content{font-size:15px;line-height:1.6}.article-content h1,.article-content h2,.article-content h3{margin:16px 0 8px}.article-content p{margin-bottom:8px}.article-content code{background:var(--tg-secondary-bg);padding:2px 6px;border-radius:4px;font-size:13px}.article-content pre{background:var(--tg-secondary-bg);padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0}.article-content pre code{background:none;padding:0}.links-section{margin-top:16px}.links-title{font-size:14px;font-weight:600;color:var(--tg-section-header);margin-bottom:8px}.link-item{display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--tg-section-bg);border-radius:10px;margin-bottom:6px;text-decoration:none;color:var(--tg-link);font-size:14px}.link-icon{font-size:18px}.tg-content{background:var(--tg-secondary-bg);border-radius:10px;padding:12px;margin-bottom:16px;font-size:14px}.tg-content-label{font-size:11px;color:var(--tg-hint);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.empty{text-align:center;padding:40px 20px;color:var(--tg-hint)}.empty-icon{font-size:48px;margin-bottom:12px}.load-more{text-align:center;padding:12px}.load-more button{padding:8px 24px;background:var(--tg-secondary-bg);color:var(--tg-text);border:none;border-radius:10px;font-size:14px;cursor:pointer}