.art-hero{background:linear-gradient(135deg,#0f172a 0%,#1e1b4b 55%,#3b0764 100%);padding:64px 24px 56px;color:#fff;}
.art-hero-inner{max-width:760px;margin:0 auto;}
.art-cat-label{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:rgba(229,41,74,.2);border:1px solid rgba(229,41,74,.3);font-size:12px;font-weight:600;color:#fca5a5;margin-bottom:20px;}
.art-hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;letter-spacing:-.04em;line-height:1.18;color:#fff;margin:0 0 20px;word-break:break-word;}
.art-meta-bar{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:rgba(255,255,255,.55);}
.art-meta-bar span{display:inline-flex;align-items:center;gap:5px;}
.art-cover-wrap{max-width:760px;margin:-32px auto 0;padding:0 24px;}
.art-cover-wrap picture{display:block;}
.art-cover-wrap img{width:100%;height:auto;border-radius:var(--radius-lg);display:block;box-shadow:0 32px 80px rgba(0,0,0,.2);}
.art-content{max-width:760px;margin:0 auto;padding:48px 24px 80px;}
.art-content h2{font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:700;letter-spacing:-.03em;margin:40px 0 16px;color:var(--ink);}
.art-content h2:first-child{margin-top:0;}
.art-content h3{font-size:1.05rem;font-weight:600;margin:28px 0 10px;color:var(--ink);}
.art-content p{font-size:16px;line-height:1.9;color:var(--ink-2);margin:0 0 18px;}
.art-content strong{color:var(--ink);font-weight:600;}
.art-content ul,.art-content ol{padding-left:24px;margin:0 0 18px;}
.art-content li{font-size:16px;line-height:1.8;color:var(--ink-2);margin-bottom:6px;}
.art-content blockquote{border-left:3px solid var(--red);padding:14px 20px;margin:24px 0;background:var(--surface-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0;}
.art-content blockquote p{margin:0;font-style:italic;color:var(--ink-2);}
.art-key-list{list-style:none;padding-left:0;margin:0 0 18px;}
.art-key-list li{position:relative;padding-left:26px;font-size:16px;line-height:1.8;color:var(--ink-2);margin-bottom:8px;}
.art-key-list li::before{content:'';position:absolute;left:6px;top:13px;width:6px;height:6px;border-radius:50%;background:var(--red);}
.art-tip-box{background:linear-gradient(135deg,#fff1f4 0%,#fff5ee 100%);border:1px solid rgba(229,41,74,.18);border-radius:var(--radius-lg);padding:24px 28px;margin:28px 0;}
.art-tip-box .tip-label{font-size:12px;font-weight:700;color:var(--red);letter-spacing:.06em;text-transform:uppercase;margin-bottom:8px;}
.art-tip-box p{margin:0;font-size:15px;color:var(--ink-2);}
.art-flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:24px 0;padding:20px;background:var(--surface-2);border-radius:var(--radius-lg);}
.art-flow span{display:inline-flex;align-items:center;padding:7px 14px;background:var(--surface);border:1px solid var(--border);border-radius:999px;font-size:14px;font-weight:600;color:var(--ink);}
.art-flow em{font-style:normal;color:var(--red);font-weight:700;}
.art-example{border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px;margin:24px 0;background:var(--surface);}
.art-example .zh{font-size:20px;font-weight:600;color:var(--ink);line-height:1.6;margin:0 0 4px;}
.art-example .en{font-size:14px;color:var(--ink-3);margin:0 0 14px;}
.art-example > div:last-child .en{margin-bottom:0;}
.art-faq{margin:28px 0;}
.art-faq details{border-bottom:1px solid var(--border);padding:16px 0;}
.art-faq summary{cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px;}
.art-faq summary::-webkit-details-marker{display:none;}
.art-faq summary::after{content:'+';color:var(--red);font-weight:700;flex-shrink:0;}
.art-faq details[open] summary::after{content:'\2212';}
.art-faq p{margin:12px 0 0;font-size:15px;line-height:1.85;color:var(--ink-2);}
.art-cta{background:var(--red);border-radius:var(--radius-lg);padding:36px 32px;text-align:center;margin-top:12px;}
.art-cta h3{color:#fff;font-size:1.3rem;font-weight:700;margin:0 0 10px;}
.art-cta p{color:rgba(255,255,255,.85);font-size:14px;margin:0 0 20px;}
.art-cta .btn-w{display:inline-flex;align-items:center;gap:6px;padding:13px 28px;background:#fff;color:var(--red);border-radius:var(--radius-sm);font-weight:600;font-size:15px;transition:transform .15s,box-shadow .2s;}
.art-cta .btn-w:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(0,0,0,.15);color:var(--red);}
.art-related{max-width:760px;margin:0 auto;padding:0 24px 80px;}
.art-related h2{font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:700;letter-spacing:-.03em;color:var(--ink);margin:0 0 20px;}
.art-related-grid{display:grid;gap:14px;}
@media(min-width:640px){.art-related-grid{grid-template-columns:repeat(3,1fr);}}
.art-related-item{display:block;padding:18px;border:1px solid var(--border);border-radius:var(--radius-md);transition:border-color .15s,transform .15s;}
.art-related-item:hover{border-color:var(--red);transform:translateY(-2px);}
.art-related-item span{display:block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--red);margin-bottom:7px;}
.art-related-item p{margin:0;font-size:14px;font-weight:600;line-height:1.55;color:var(--ink);}