:root{--bg:#fafafa;--card:#fff;--border:#e5e7eb;--text:#111827;--muted:#6b7280}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:inherit;text-decoration:none}button{font:inherit;background:#fff;border:1px solid var(--border);padding:0;cursor:pointer}button:disabled{opacity:.6;cursor:default}button:focus-visible,input:focus-visible{outline:2px solid #3897f0;outline-offset:2px}.main{max-width:680px;margin:24px auto;padding:0 16px}.nav{position:sticky;top:0;z-index:10;background:var(--card);border-bottom:1px solid var(--border)}.nav-wrap{max-width:680px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between}.nav-title{font-weight:700;font-size:20px;letter-spacing:.2px}.nav-actions{display:flex;gap:8px}.btn-mini{border-radius:8px;padding:6px 10px;font-size:12px;background:#fff}.composer{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:12px;margin:12px 0 16px}.composer h3{margin:0 0 8px;font-size:16px}.composer-input{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;margin-bottom:8px;background:#fff;color:var(--text)}.composer-share{border-radius:8px;padding:6px 10px;font-size:13px}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;overflow:hidden;margin-bottom:16px}.card-header{display:flex;align-items:center;gap:8px;padding:10px 12px}.avatar{width:28px;height:28px;border-radius:50%}.author{font-weight:700}.card-img{width:100%;display:block}.actions{display:flex;align-items:center;gap:10px;padding:8px 12px}.like-count{font-size:13px;color:var(--text)}.caption{padding:0 12px 10px;margin:0;font-size:14px}.caption strong{margin-right:6px}.comment-empty{padding:0 12px 12px;color:var(--muted)}.comments{list-style:none;padding:0 12px 12px;margin:0}.comments li{margin-bottom:6px}.comments strong{margin-right:6px}.comment-form{display:flex;gap:8px;padding:0 12px 12px}.comment-input{flex:1;padding:8px 10px;border:1px solid var(--border);border-radius:6px;background:#fff}.comment-post-btn{border-radius:8px;padding:6px 10px;font-size:13px}.actions,.like-btn{pointer-events:auto}.like-btn{position:relative;z-index:1;border:1px solid var(--border);background:#fff;border-radius:999px;padding:4px 10px;font-size:13px;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.actions .like-btn:hover{background:#bf7373!important;border-color:#d1d5db!important}.like-btn:focus-visible{background:#a26262!important;border-color:#d1d5db!important}.like-btn:active{background:#a45893!important;border-color:#cfd6dc!important}.like-btn[aria-pressed=true]{background:#ffe6ea!important;border-color:#ffb3c1!important;color:#c9184a!important}.like-btn[aria-pressed=true]:hover,.like-btn[aria-pressed=true]:focus-visible{background:#ffd6e0!important}.like-btn[aria-pressed=true]:active{background:#ffc9d8!important}