/* AI 图片创作页（liblib 风格） */
.ai-hero{background:#f7f8fa;padding:40px 20px 30px;text-align:center}
.ai-hero h1{font-size:34px;font-weight:700;color:#222;margin-bottom:10px}
.ai-hero .ai-sub{color:#888;font-size:15px;margin-bottom:24px}
.ai-hero .ai-sub span{color:#31C27C;margin:0 6px}
.ai-card{max-width:860px;margin:0 auto;background:#fff;border-radius:16px;box-shadow:0 4px 24px rgba(0,0,0,.06);padding:18px 20px 14px;text-align:left}
.ai-tabs{display:flex;align-items:center;gap:14px;margin-bottom:10px}
.ai-tab{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:#fff;background:#31C27C;border-radius:8px;padding:6px 14px}
.ai-tab-tip{color:#bbb;font-size:13px}
.ai-card textarea{width:100%;min-height:88px;border:none;outline:none;resize:vertical;font-size:15px;line-height:1.7;color:#333;background:transparent}
.ai-card textarea::placeholder{color:#c0c4cc}
.ai-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid #f0f2f5;padding-top:12px}
.ai-opts{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.ai-opt-label{color:#888;font-size:13px;display:inline-flex;align-items:center;gap:4px}
#aiModel{border:1px solid #e4e7ed;border-radius:8px;height:32px;padding:0 8px;font-size:13px;color:#333;outline:none;background:#fff}
.ai-ratios a{display:inline-block;padding:5px 12px;border-radius:8px;border:1px solid #e4e7ed;color:#666;font-size:13px;margin-right:6px;cursor:pointer;transition:all .2s}
.ai-ratios a:hover{border-color:#31C27C;color:#31C27C}
.ai-ratios a.on{background:#31C27C;border-color:#31C27C;color:#fff}
.ai-go{background:linear-gradient(135deg,#31C27C,#2bb56f);color:#fff;border:none;border-radius:20px;padding:9px 26px;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:opacity .2s}
.ai-go:hover{opacity:.85}
.ai-go[disabled]{opacity:.5;cursor:not-allowed}
.ai-nav-go{color:#999;font-size:13px;cursor:pointer;text-decoration:underline}
.ai-nav-go:hover{color:#31C27C}
/* AI 视频画廊 */
.aiv-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;list-style:none;padding:0}
.aiv-card{border-radius:8px;overflow:hidden;background:#000}
.aiv-card video{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
@media (max-width:992px){.aiv-gallery{grid-template-columns:repeat(2,1fr)}}
.ai-result{max-width:860px;margin:24px auto 0}
.ai-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fff;border-radius:16px;padding:60px 0;box-shadow:0 4px 24px rgba(0,0,0,.06)}
.ai-loading p{color:#999;margin-top:16px;font-size:14px}
.ai-spinner{width:44px;height:44px;border:4px solid #e5f6ee;border-top-color:#31C27C;border-radius:50%;animation:aispin 1s linear infinite;display:block}
@keyframes aispin{to{transform:rotate(360deg)}}
.ai-shot{background:#fff;border-radius:16px;padding:16px;box-shadow:0 4px 24px rgba(0,0,0,.06)}
.ai-shot img{max-width:100%;max-height:640px;display:block;margin:0 auto;border-radius:12px}
.ai-shot-bar{display:flex;align-items:center;gap:18px;margin-top:12px}
.ai-shot-bar p{flex:1;color:#666;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ai-dl,.ai-shot-bar #aiShotAgain{color:#31C27C;font-size:14px;cursor:pointer}
.ai-box{aspect-ratio:auto}
.ai-box img{position:static}
.bk20{height:20px}