:root{--color-primary: #0D9FAB;--color-primary-dark: #0A7E88;--color-primary-light: #4ECAD4;--color-secondary: #3A7D44;--color-accent: #D4623A;--color-bg: #F5F0E8;--color-surface: #FDFAF5;--color-text: #2B2B2B;--color-text-muted: #6B6B6B;--color-border: #E0D8CC;--color-error: #C0392B;--color-success: #27AE60;--color-warning: #E67E22;--font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-md: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.375rem;--font-size-2xl: 1.75rem;--font-size-3xl: 2.25rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--max-width: 600px;--nav-height: 56px;--topbar-height: 56px;--border-radius: 10px;--border-radius-sm: 6px;--shadow-card: 0 2px 8px rgba(0, 0, 0, .08);--shadow-modal: 0 8px 32px rgba(0, 0, 0, .16);--transition: all .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-family);font-size:var(--font-size-md);color:var(--color-text);background:var(--color-bg);line-height:1.6;min-height:100dvh;overflow-x:hidden}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}img,svg{display:block;max-width:100%}button{font-family:var(--font-family);cursor:pointer}.app-shell{display:flex;flex-direction:column;min-height:100dvh}.app-topbar{position:sticky;top:0;z-index:100;min-height:var(--topbar-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;padding:var(--space-2) var(--space-4);gap:var(--space-3);flex-wrap:nowrap}.app-content{flex:1;padding:var(--space-4);padding-bottom:calc(var(--nav-height) + var(--space-4));max-width:var(--max-width);margin:0 auto;width:100%}.app-bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--nav-height);background:var(--color-surface);border-top:1px solid var(--color-border);display:flex;z-index:100}@media (min-width: 768px){.app-bottom-nav{display:none}.app-content{padding-bottom:var(--space-8)}}.desktop-top-nav{display:none;align-items:center;gap:var(--space-2);flex:1;justify-content:center;margin:0 var(--space-2)}@media (min-width: 768px){.desktop-top-nav{display:flex}}.desktop-top-nav a{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text-muted);text-decoration:none;padding:var(--space-2) var(--space-3);border-radius:var(--border-radius-sm)}.desktop-top-nav a:hover{color:var(--color-primary);background:#0d9fab14}.desktop-top-nav a.active{color:var(--color-primary)}.card{background:var(--color-surface);border-radius:var(--border-radius);box-shadow:var(--shadow-card);padding:var(--space-5);border:1px solid var(--color-border)}.card+.card{margin-top:var(--space-4)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border-radius:var(--border-radius-sm);font-size:var(--font-size-md);font-weight:600;border:2px solid transparent;transition:var(--transition);line-height:1.2;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background:var(--color-primary-dark);border-color:var(--color-primary-dark)}.btn-secondary{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}.btn-secondary:hover:not(:disabled){background:var(--color-primary);color:#fff}.btn-ghost{background:transparent;color:var(--color-text-muted);border-color:transparent}.btn-ghost:hover:not(:disabled){background:var(--color-border)}.btn-sm{padding:var(--space-2) var(--space-3);font-size:var(--font-size-sm)}.btn-full{width:100%}.form-group{display:flex;flex-direction:column;gap:var(--space-1)}.form-label{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text)}.form-input{padding:var(--space-3) var(--space-4);border:1.5px solid var(--color-border);border-radius:var(--border-radius-sm);font-size:var(--font-size-md);font-family:var(--font-family);color:var(--color-text);background:var(--color-surface);transition:border-color .15s;width:100%}.form-input:focus{outline:none;border-color:var(--color-primary)}.form-input::placeholder{color:var(--color-text-muted)}textarea.form-input{resize:vertical;min-height:80px}.text-xl{font-size:var(--font-size-xl);font-weight:700}.text-lg{font-size:var(--font-size-lg);font-weight:600}.text-muted{color:var(--color-text-muted);font-size:var(--font-size-sm)}.text-accent{color:var(--color-accent);font-weight:700}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--color-text-muted);cursor:pointer;line-height:0;flex-shrink:0;transition:background .15s ease,color .15s ease}.icon-btn:hover:not(:disabled){background:#0000000f;color:var(--color-primary)}.icon-btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.icon-btn:disabled{opacity:.45;cursor:not-allowed}.icon-btn svg{display:block}a.icon-btn{text-decoration:none;color:var(--color-text-muted)}a.icon-btn:hover{color:var(--color-primary)}.icon-btn-pill{border-radius:999px;background:#0d9fab14;color:var(--color-primary)}.icon-btn-pill:hover:not(:disabled){background:#0d9fab2e;color:var(--color-primary-dark)}.icon-btn-pill[aria-pressed=true]{background:#0d9fab33;color:var(--color-primary-dark)}.action-row{display:flex;flex-wrap:wrap;gap:var(--space-2);align-items:center}.feed-card-actions-row{margin-top:var(--space-2)}.like-group,.reply-group{display:inline-flex;align-items:center;gap:2px}.like-count,.reply-count{font-size:var(--font-size-xs);font-weight:600;color:var(--color-text-muted);min-width:1ch}.post-card{border-radius:14px;transition:box-shadow .18s ease}.post-card:hover{box-shadow:0 4px 16px #0000001a}.post-card:focus-within{outline:2px solid var(--color-primary);outline-offset:2px}.btn-pill{border-radius:999px!important;background:#0d9fab14!important;border-color:transparent!important;color:var(--color-primary)!important}.btn-pill:hover:not(:disabled){background:#0d9fab2e!important;color:var(--color-primary-dark)!important}.btn-pill:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.btn-pill[aria-pressed=true]{background:#0d9fab33!important}.post-content-clamp{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.post-body{white-space:pre-wrap;word-break:break-word;margin:0}.post-op-title{font-size:var(--font-size-lg);font-weight:700;line-height:1.55;margin-bottom:var(--space-3)}.link-back{color:var(--color-text-muted);font-size:var(--font-size-sm);display:inline-block;margin-bottom:var(--space-3)}.feed-toolbar{display:flex;flex-direction:column;gap:var(--space-3);margin-bottom:var(--space-4)}.feed-toolbar-row{display:flex;flex-wrap:wrap;gap:var(--space-2);align-items:center}.feed-toolbar select.form-input{width:auto;max-width:100%;min-width:0}.feed-tab-group{display:flex;flex-wrap:wrap;gap:var(--space-1)}.feed-tab{font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;padding:var(--space-2) var(--space-3);border-radius:var(--border-radius-sm);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-muted);cursor:pointer}.feed-tab[aria-pressed=true]{border-color:var(--color-primary);color:var(--color-primary);background:#0d9fab14}.feed-search{flex:1;min-width:140px}.feed-card-row{display:flex;align-items:flex-start;gap:var(--space-4);flex-wrap:wrap}.feed-card-main{flex:1;min-width:min(100%,200px)}.feed-card-link{display:block;color:inherit;text-decoration:none}.feed-card-link:hover .post-content-clamp{color:var(--color-primary-dark)}.feed-card-meta{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap;margin-top:var(--space-2)}.feed-card-badges{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-2)}.thread-avatar{border-radius:50%;background:var(--color-surface-alt, var(--color-surface));border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--color-primary);flex-shrink:0}.thread-avatar-sm{width:32px;height:32px;font-size:var(--font-size-sm)}.thread-avatar-md{width:40px;height:40px;font-size:var(--font-size-md)}.thread-list{list-style:none;margin:0;padding:0}.thread-item{margin-bottom:var(--space-4)}.thread-item-inner{display:flex;gap:var(--space-3)}.thread-item-body{flex:1;min-width:0}.thread-meta-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:var(--space-2);align-items:baseline;margin-bottom:var(--space-2)}.thread-author{font-weight:600;font-size:var(--font-size-sm)}.thread-answer-actions{display:flex;flex-wrap:wrap;gap:var(--space-1);align-items:center;margin-top:var(--space-2)}.thread-answer-card{border-left:3px solid var(--color-primary)}.answer-accepted{border-left-color:var(--color-success)!important;background:#27ae600f}.thread-section-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:var(--space-3);margin-bottom:var(--space-3)}.composer{margin-top:var(--space-4)}.composer-sticky{position:sticky;bottom:calc(var(--nav-height) + var(--space-3));z-index:50;box-shadow:0 -4px 20px #0000000f}@media (min-width: 768px){.composer-sticky{bottom:var(--space-4)}}.composer-toolbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-2);margin-top:var(--space-2)}.composer-counter{font-size:var(--font-size-xs);color:var(--color-text-muted)}.thread-jump-reply{font-size:var(--font-size-sm);font-weight:600;color:var(--color-primary);text-decoration:none}.thread-jump-reply:hover{text-decoration:underline}.relative-time{font-size:var(--font-size-xs);color:var(--color-text-muted)}.affiliate-ad{margin-top:var(--space-5);padding:var(--space-4);border:1.5px solid var(--color-border);border-left:4px solid var(--color-primary);border-radius:var(--border-radius);background:var(--color-surface);text-align:left;max-width:100%}.affiliate-ad-cta{margin:0;font-size:var(--font-size-sm);line-height:1.55}.affiliate-ad-link{margin-top:var(--space-3);display:inline-flex;flex-direction:column;align-items:flex-start;text-decoration:none;width:auto}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--space-2)}.gap-4{gap:var(--space-4)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mb-4{margin-bottom:var(--space-4)}.mb-2{margin-bottom:var(--space-2)}.w-full{width:100%}.badge{display:inline-block;padding:2px var(--space-2);border-radius:4px;font-size:var(--font-size-xs);font-weight:600}.badge-success{background:#e8f8ee;color:var(--color-success)}.badge-error{background:#fdeeec;color:var(--color-error)}.badge-warning{background:#fef3e2;color:var(--color-warning)}.badge-muted{background:var(--color-border);color:var(--color-text-muted)}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:24px;height:24px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .7s linear infinite;margin:var(--space-8) auto}.page-title{font-size:var(--font-size-2xl);font-weight:800;color:var(--color-text);margin-bottom:var(--space-4)}