.whhc-root{--whhc-primary:#2563eb;--whhc-primary-dark:#1d4ed8;--whhc-primary-soft:#eff6ff;--whhc-ink:#0f172a;--whhc-body:#334155;--whhc-muted:#64748b;--whhc-line:#e2e8f0;--whhc-line-soft:#f1f5f9;--whhc-bg:#f8fafc;--whhc-surface:#fff;--whhc-accent:#7c3aed;--whhc-accent-soft:#f5f3ff;--whhc-success:#059669;--whhc-success-soft:#ecfdf5;--whhc-warn:#b45309;--whhc-warn-soft:#fffbeb;--whhc-danger:#dc2626;--whhc-radius:12px;--whhc-radius-sm:8px;--whhc-radius-lg:18px;--whhc-shadow-sm:0 1px 2px #0f172a0f;--whhc-shadow:0 4px 16px #0f172a12;--whhc-shadow-lg:0 18px 48px #0f172a29;--whhc-ring:0 0 0 3px #2563eb59;--whhc-ease:cubic-bezier(.4, 0, .2, 1);--whhc-font:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;font-family:var(--whhc-font);background:var(--whhc-bg);color:var(--whhc-body);-webkit-font-smoothing:antialiased;min-height:100vh}.whhc-root,.whhc-root *,.whhc-root :before,.whhc-root :after{box-sizing:border-box}.whhc-root h1,.whhc-root h2,.whhc-root h3,.whhc-root h4,.whhc-root p{margin:0}.whhc-root a{color:var(--whhc-primary);text-decoration:none}.whhc-root button{cursor:pointer;font-family:inherit}.whhc-root a:focus-visible,.whhc-root button:focus-visible,.whhc-root input:focus-visible,.whhc-root select:focus-visible,.whhc-root textarea:focus-visible,.whhc-root summary:focus-visible{outline:2px solid var(--whhc-primary);outline-offset:2px;border-radius:4px}.whhc-sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){.whhc-root *,.whhc-root :before,.whhc-root :after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.whhc-nav{z-index:40;-webkit-backdrop-filter:saturate(180%)blur(12px);backdrop-filter:saturate(180%)blur(12px);border-bottom:1px solid var(--whhc-line);background:#ffffffeb;position:sticky;top:0}.whhc-nav-inner{justify-content:space-between;align-items:center;gap:16px;max-width:1200px;margin:0 auto;padding:12px 20px;display:flex}.whhc-brand{color:var(--whhc-ink);letter-spacing:-.01em;align-items:center;gap:10px;font-size:17px;font-weight:700;display:inline-flex}.whhc-brand:hover{color:var(--whhc-primary)}.whhc-brand-mark{background:linear-gradient(135deg, var(--whhc-primary), var(--whhc-accent));color:#fff;border-radius:9px;flex:none;justify-content:center;align-items:center;width:32px;height:32px;display:inline-flex}.whhc-brand-mark svg{width:18px;height:18px}.whhc-nav-links{align-items:center;gap:8px;display:flex}.whhc-navlink{border-radius:var(--whhc-radius-sm);min-height:40px;color:var(--whhc-body);transition:background .2s var(--whhc-ease), color .2s var(--whhc-ease);align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:500;display:inline-flex}.whhc-navlink:hover{background:var(--whhc-line-soft);color:var(--whhc-ink)}.whhc-navlink svg{width:16px;height:16px}.whhc-navlink-primary{background:var(--whhc-primary);color:#fff!important}.whhc-navlink-primary:hover{background:var(--whhc-primary-dark)}.whhc-navlink-ghost{border:1px solid var(--whhc-line)}.whhc-wrap{max-width:1200px;margin:0 auto;padding:0 20px}.whhc-section{padding:40px 0}.whhc-section-tight{padding:24px 0}.whhc-section-head{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:18px;display:flex}.whhc-section-title{color:var(--whhc-ink);letter-spacing:-.01em;align-items:center;gap:9px;font-size:20px;font-weight:700;display:flex}.whhc-section-title svg{width:19px;height:19px;color:var(--whhc-primary)}.whhc-section-sub{color:var(--whhc-muted);font-size:13.5px}.whhc-hero{background:radial-gradient(1100px 420px at 50% -140px, #2563eb21, transparent 70%), linear-gradient(180deg, #fff 0%, var(--whhc-bg) 100%);border-bottom:1px solid var(--whhc-line);padding:56px 0 44px;position:relative;overflow:hidden}.whhc-hero-inner{text-align:center;max-width:760px;margin:0 auto}.whhc-hero-badge{background:var(--whhc-success-soft);color:var(--whhc-success);border:1px solid #0596692e;border-radius:999px;align-items:center;gap:7px;margin-bottom:18px;padding:5px 13px;font-size:12.5px;font-weight:600;display:inline-flex}.whhc-hero-badge .whhc-dot{background:var(--whhc-success);border-radius:50%;width:7px;height:7px;animation:2s infinite whhc-pulse}@keyframes whhc-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}.whhc-hero-title{color:var(--whhc-ink);letter-spacing:-.025em;margin-bottom:12px;font-size:clamp(28px,4.4vw,40px);font-weight:800;line-height:1.18}.whhc-hero-lead{color:var(--whhc-muted);margin-bottom:28px;font-size:clamp(14.5px,1.7vw,16.5px);line-height:1.6}.whhc-search{text-align:left;position:relative}.whhc-search-box{border:1.5px solid var(--whhc-line);box-shadow:var(--whhc-shadow);transition:border-color .2s var(--whhc-ease), box-shadow .2s var(--whhc-ease);background:#fff;border-radius:14px;align-items:center;gap:10px;padding:7px 7px 7px 16px;display:flex}.whhc-search-box:focus-within{border-color:var(--whhc-primary);box-shadow:var(--whhc-ring), var(--whhc-shadow)}.whhc-search-box>svg{width:20px;height:20px;color:var(--whhc-muted);flex:none}.whhc-search-input{min-width:0;color:var(--whhc-ink);background:0 0;border:0;outline:0;flex:1;padding:11px 0;font-size:16px}.whhc-search-input::placeholder{color:#94a3b8}.whhc-search-clear{background:var(--whhc-line-soft);width:30px;height:30px;color:var(--whhc-muted);border:0;border-radius:50%;flex:none;justify-content:center;align-items:center;display:none}.whhc-search-clear:hover{background:var(--whhc-line);color:var(--whhc-ink)}.whhc-search-clear.is-visible{display:inline-flex}.whhc-search-clear svg{width:14px;height:14px}.whhc-search-submit{background:var(--whhc-primary);color:#fff;min-height:44px;transition:background .2s var(--whhc-ease);border:0;border-radius:10px;flex:none;padding:0 22px;font-size:14.5px;font-weight:600}.whhc-search-submit:hover{background:var(--whhc-primary-dark)}.whhc-suggest{z-index:30;border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);box-shadow:var(--whhc-shadow-lg);background:#fff;display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;overflow:hidden}.whhc-suggest.is-open{animation:whhc-drop .16s var(--whhc-ease);display:block}@keyframes whhc-drop{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.whhc-suggest-item{border-bottom:1px solid var(--whhc-line-soft);color:var(--whhc-body);transition:background .15s var(--whhc-ease);align-items:center;gap:11px;padding:11px 15px;font-size:14px;display:flex}.whhc-suggest-item:last-child{border-bottom:0}.whhc-suggest-item:hover,.whhc-suggest-item.is-active{background:var(--whhc-primary-soft);color:var(--whhc-primary-dark)}.whhc-suggest-item svg{width:16px;height:16px;color:var(--whhc-muted);flex:none}.whhc-suggest-item mark{color:var(--whhc-primary-dark);background:#2563eb24;border-radius:3px;padding:0 2px}.whhc-suggest-cat{color:var(--whhc-muted);background:var(--whhc-line-soft);border-radius:999px;flex:none;margin-left:auto;padding:2px 8px;font-size:11.5px}.whhc-suggest-empty{text-align:center;color:var(--whhc-muted);padding:20px 16px;font-size:13.5px}.whhc-suggest-empty a{font-weight:600}.whhc-chips{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:18px;display:flex}.whhc-chips-label{color:var(--whhc-muted);margin-right:2px;font-size:13px}.whhc-chip{border:1px solid var(--whhc-line);min-height:34px;color:var(--whhc-body);transition:all .18s var(--whhc-ease);background:#fff;border-radius:999px;padding:6px 14px;font-size:13px}.whhc-chip:hover{border-color:var(--whhc-primary);color:var(--whhc-primary);background:var(--whhc-primary-soft);transform:translateY(-1px)}.whhc-stats{background:var(--whhc-line);border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);z-index:5;box-shadow:var(--whhc-shadow-sm);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;margin-top:-22px;display:grid;position:relative;overflow:hidden}.whhc-stat{text-align:center;background:#fff;padding:18px 16px}.whhc-stat-value{color:var(--whhc-ink);letter-spacing:-.02em;justify-content:center;align-items:center;gap:6px;font-size:22px;font-weight:700;display:flex}.whhc-stat-value svg{width:17px;height:17px;color:var(--whhc-primary)}.whhc-stat-label{color:var(--whhc-muted);margin-top:3px;font-size:12.5px}.whhc-grid{grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:18px;display:grid}.whhc-card{background:var(--whhc-surface);border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);transition:box-shadow .22s var(--whhc-ease), border-color .22s var(--whhc-ease), transform .22s var(--whhc-ease);flex-direction:column;display:flex;overflow:hidden}.whhc-card:hover{box-shadow:var(--whhc-shadow);border-color:#cbd5e1;transform:translateY(-2px)}.whhc-card-head{border-bottom:1px solid var(--whhc-line-soft);background:linear-gradient(#fff,#fcfdff);align-items:center;gap:11px;padding:16px 18px;display:flex}.whhc-card-icon{background:var(--whhc-primary-soft);width:38px;height:38px;color:var(--whhc-primary);border-radius:10px;flex:none;justify-content:center;align-items:center;display:inline-flex}.whhc-card-icon svg{width:19px;height:19px}.whhc-card-title{color:var(--whhc-ink);font-size:15.5px;font-weight:700}.whhc-card-count{color:var(--whhc-muted);margin-top:1px;font-size:12px}.whhc-card-badge{color:var(--whhc-primary);background:var(--whhc-primary-soft);border-radius:999px;flex:none;margin-left:auto;padding:3px 9px;font-size:11.5px;font-weight:600}.whhc-card-body{flex:1;padding:8px}.whhc-item{border-radius:var(--whhc-radius-sm);color:var(--whhc-body);transition:background .16s var(--whhc-ease), color .16s var(--whhc-ease);align-items:center;gap:11px;padding:11px 12px;font-size:14px;display:flex}.whhc-item:hover{background:var(--whhc-primary-soft);color:var(--whhc-primary-dark)}.whhc-item-icon{color:#cbd5e1;flex:none;width:15px;height:15px}.whhc-item:hover .whhc-item-icon{color:var(--whhc-primary)}.whhc-item-text{flex:1;min-width:0}.whhc-item-title{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.whhc-item-meta{color:#94a3b8;margin-top:2px;font-size:11.5px}.whhc-item-arrow{color:#cbd5e1;width:15px;height:15px;transition:transform .18s var(--whhc-ease), color .18s var(--whhc-ease);flex:none}.whhc-item:hover .whhc-item-arrow{color:var(--whhc-primary);transform:translate(3px)}.whhc-card-foot{border-top:1px solid var(--whhc-line-soft);color:var(--whhc-primary);align-items:center;gap:6px;padding:11px 18px;font-size:13px;font-weight:600;display:flex}.whhc-card-foot svg{width:14px;height:14px;transition:transform .18s var(--whhc-ease)}.whhc-card-foot:hover svg{transform:translate(3px)}.whhc-faq{flex-direction:column;gap:10px;display:flex}.whhc-faq-item{border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);transition:border-color .2s var(--whhc-ease), box-shadow .2s var(--whhc-ease);background:#fff;overflow:hidden}.whhc-faq-item[open]{box-shadow:var(--whhc-shadow-sm);border-color:#c7d2fe}.whhc-faq-item:hover{border-color:#cbd5e1}.whhc-faq-q{min-height:56px;color:var(--whhc-ink);cursor:pointer;transition:background .16s var(--whhc-ease);align-items:center;gap:12px;padding:15px 18px;font-size:14.5px;font-weight:600;list-style:none;display:flex}.whhc-faq-q::-webkit-details-marker{display:none}.whhc-faq-q:hover{background:var(--whhc-line-soft)}.whhc-faq-q svg{width:17px;height:17px;color:var(--whhc-primary);flex:none}.whhc-faq-q .whhc-faq-chev{color:var(--whhc-muted);transition:transform .24s var(--whhc-ease);margin-left:auto}.whhc-faq-item[open] .whhc-faq-chev{transform:rotate(180deg)}.whhc-faq-a{color:var(--whhc-body);padding:0 18px 17px 47px;font-size:14px;line-height:1.72}.whhc-faq-a p+p{margin-top:10px}.whhc-trending{flex-direction:column;gap:2px;display:flex}.whhc-trend-item{border-radius:var(--whhc-radius-sm);color:var(--whhc-body);transition:background .16s var(--whhc-ease);align-items:center;gap:13px;padding:12px 14px;font-size:14px;display:flex}.whhc-trend-item:hover{background:#fff}.whhc-trend-rank{background:var(--whhc-line-soft);width:24px;height:24px;color:var(--whhc-muted);border-radius:7px;flex:none;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:inline-flex}.whhc-trend-item:first-child .whhc-trend-rank{color:#b45309;background:#fef3c7}.whhc-trend-item:nth-child(2) .whhc-trend-rank{color:#475569;background:#e2e8f0}.whhc-trend-item:nth-child(3) .whhc-trend-rank{color:#c2410c;background:#ffedd5}.whhc-trend-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.whhc-trend-views{color:var(--whhc-muted);flex:none;align-items:center;gap:5px;font-size:12px;display:inline-flex}.whhc-trend-views svg{width:13px;height:13px}.whhc-ai{border-radius:var(--whhc-radius-lg);box-shadow:var(--whhc-shadow-sm);background:linear-gradient(135deg,#faf5ff 0%,#eff6ff 100%);border:1px solid #ddd6fe;padding:22px}.whhc-ai-head{flex-wrap:wrap;align-items:center;gap:11px;margin-bottom:15px;display:flex}.whhc-ai-avatar{background:linear-gradient(135deg, var(--whhc-accent), #6366f1);color:#fff;border-radius:11px;flex:none;justify-content:center;align-items:center;width:38px;height:38px;display:inline-flex;box-shadow:0 4px 12px #7c3aed4d}.whhc-ai-avatar svg{width:20px;height:20px}.whhc-ai-title{color:var(--whhc-ink);font-size:16px;font-weight:700}.whhc-ai-sub{color:var(--whhc-muted);font-size:12.5px}.whhc-ai-online{background:var(--whhc-success-soft);color:var(--whhc-success);border-radius:999px;align-items:center;gap:6px;margin-left:auto;padding:4px 10px;font-size:11.5px;font-weight:600;display:inline-flex}.whhc-ai-online .whhc-dot{background:var(--whhc-success);border-radius:50%;width:6px;height:6px;animation:2s infinite whhc-pulse}.whhc-ai-log{border-radius:var(--whhc-radius);scroll-behavior:smooth;background:#fff;border:1px solid #ede9fe;flex-direction:column;gap:11px;min-height:96px;max-height:300px;margin-bottom:13px;padding:14px;display:flex;overflow-y:auto}.whhc-msg{gap:9px;max-width:92%;display:flex}.whhc-msg-bot{align-self:flex-start}.whhc-msg-user{flex-direction:row-reverse;align-self:flex-end}.whhc-msg-avatar{border-radius:8px;flex:none;justify-content:center;align-items:center;width:27px;height:27px;font-size:12px;display:inline-flex}.whhc-msg-bot .whhc-msg-avatar{background:var(--whhc-accent-soft);color:var(--whhc-accent)}.whhc-msg-bot .whhc-msg-avatar svg{width:15px;height:15px}.whhc-msg-user .whhc-msg-avatar{background:var(--whhc-primary-soft);color:var(--whhc-primary)}.whhc-msg-user .whhc-msg-avatar svg{width:15px;height:15px}.whhc-bubble{white-space:pre-wrap;word-break:break-word;border-radius:12px;padding:9px 13px;font-size:13.5px;line-height:1.62}.whhc-msg-bot .whhc-bubble{background:var(--whhc-line-soft);color:var(--whhc-body);border-top-left-radius:3px}.whhc-msg-user .whhc-bubble{background:var(--whhc-primary);color:#fff;border-top-right-radius:3px}.whhc-msg-error .whhc-bubble{color:var(--whhc-danger);background:#fef2f2}.whhc-typing{align-items:center;gap:4px;height:18px;display:inline-flex}.whhc-typing i{background:#a78bfa;border-radius:50%;width:6px;height:6px;animation:1.3s infinite whhc-bounce}.whhc-typing i:nth-child(2){animation-delay:.18s}.whhc-typing i:nth-child(3){animation-delay:.36s}@keyframes whhc-bounce{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-5px)}}.whhc-ai-related{flex-direction:column;gap:6px;margin-top:4px;display:flex}.whhc-ai-related-label{color:var(--whhc-muted);font-size:11.5px;font-weight:600}.whhc-ai-related a{border-radius:var(--whhc-radius-sm);background:#ffffffbf;border:1px solid #ede9fe;align-items:center;gap:6px;padding:6px 9px;font-size:13px;display:flex}.whhc-ai-related a:hover{border-color:var(--whhc-accent);background:#fff}.whhc-ai-related a svg{width:13px;height:13px}.whhc-ai-form{gap:9px;display:flex}.whhc-ai-input{min-width:0;min-height:46px;color:var(--whhc-ink);transition:border-color .2s var(--whhc-ease), box-shadow .2s var(--whhc-ease);background:#fff;border:1.5px solid #ddd6fe;border-radius:11px;outline:0;flex:1;padding:11px 15px;font-size:14.5px}.whhc-ai-input:focus{border-color:var(--whhc-accent);box-shadow:0 0 0 3px #7c3aed2e}.whhc-ai-send{background:var(--whhc-accent);color:#fff;min-width:46px;min-height:46px;transition:background .2s var(--whhc-ease);border:0;border-radius:11px;flex:none;justify-content:center;align-items:center;gap:7px;padding:0 18px;font-size:14.5px;font-weight:600;display:inline-flex}.whhc-ai-send:hover{background:#6d28d9}.whhc-ai-send:disabled{opacity:.55;cursor:not-allowed}.whhc-ai-send svg{width:16px;height:16px}.whhc-ai-suggest{flex-wrap:wrap;gap:7px;margin-top:11px;display:flex}.whhc-ai-suggest button{min-height:32px;color:var(--whhc-accent);transition:all .18s var(--whhc-ease);background:#ffffffd9;border:1px solid #ddd6fe;border-radius:999px;padding:6px 12px;font-size:12.5px}.whhc-ai-suggest button:hover{border-color:var(--whhc-accent);background:#fff}.whhc-cta{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;display:grid}.whhc-cta-card{border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);transition:box-shadow .22s var(--whhc-ease), transform .22s var(--whhc-ease);background:#fff;flex-direction:column;gap:12px;padding:24px;display:flex}.whhc-cta-card:hover{box-shadow:var(--whhc-shadow);transform:translateY(-2px)}.whhc-cta-icon{background:var(--whhc-primary-soft);width:44px;height:44px;color:var(--whhc-primary);border-radius:12px;justify-content:center;align-items:center;display:inline-flex}.whhc-cta-icon svg{width:22px;height:22px}.whhc-cta-title{color:var(--whhc-ink);font-size:16px;font-weight:700}.whhc-cta-desc{color:var(--whhc-muted);flex:1;font-size:13.5px;line-height:1.62}.whhc-btn{min-height:44px;transition:all .2s var(--whhc-ease);border:0;border-radius:10px;justify-content:center;align-self:flex-start;align-items:center;gap:7px;padding:0 20px;font-size:14.5px;font-weight:600;display:inline-flex}.whhc-btn svg{width:16px;height:16px}.whhc-btn-primary{background:var(--whhc-primary);color:#fff}.whhc-btn-primary:hover{background:var(--whhc-primary-dark)}.whhc-btn-outline{color:var(--whhc-ink);border:1px solid var(--whhc-line);background:#fff}.whhc-btn-outline:hover{border-color:var(--whhc-primary);color:var(--whhc-primary)}.whhc-btn-block{align-self:stretch;width:100%}.whhc-overlay{z-index:90;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#0f172a7a;justify-content:center;align-items:center;padding:20px;display:none;position:fixed;inset:0}.whhc-overlay.is-open{animation:whhc-fade .18s var(--whhc-ease);display:flex}@keyframes whhc-fade{0%{opacity:0}to{opacity:1}}.whhc-modal{border-radius:var(--whhc-radius-lg);width:100%;max-width:560px;max-height:90vh;box-shadow:var(--whhc-shadow-lg);animation:whhc-rise .22s var(--whhc-ease);background:#fff;overflow-y:auto}@keyframes whhc-rise{0%{opacity:0;transform:translateY(14px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.whhc-modal-head{border-bottom:1px solid var(--whhc-line-soft);align-items:flex-start;gap:12px;padding:22px 24px 16px;display:flex}.whhc-modal-head h3{color:var(--whhc-ink);font-size:17px;font-weight:700}.whhc-modal-head p{color:var(--whhc-muted);margin-top:3px;font-size:13px}.whhc-modal-close{background:var(--whhc-line-soft);width:34px;height:34px;color:var(--whhc-muted);transition:all .18s var(--whhc-ease);border:0;border-radius:9px;flex:none;justify-content:center;align-items:center;margin-left:auto;display:inline-flex}.whhc-modal-close:hover{background:var(--whhc-line);color:var(--whhc-ink)}.whhc-modal-close svg{width:17px;height:17px}.whhc-modal-body{flex-direction:column;gap:15px;padding:20px 24px 24px;display:flex}.whhc-modal-foot{justify-content:flex-end;gap:10px;padding-top:5px;display:flex}.whhc-field{flex-direction:column;gap:7px;display:flex}.whhc-label{color:var(--whhc-ink);align-items:center;gap:5px;font-size:13px;font-weight:600;display:flex}.whhc-label .whhc-req{color:var(--whhc-danger)}.whhc-input,.whhc-select,.whhc-textarea{border:1.5px solid var(--whhc-line);width:100%;min-height:46px;color:var(--whhc-ink);transition:border-color .2s var(--whhc-ease), box-shadow .2s var(--whhc-ease);background:#fff;border-radius:10px;outline:0;padding:11px 14px;font-family:inherit;font-size:16px}.whhc-textarea{resize:vertical;min-height:118px;line-height:1.6}.whhc-input:focus,.whhc-select:focus,.whhc-textarea:focus{border-color:var(--whhc-primary);box-shadow:var(--whhc-ring)}.whhc-input::placeholder,.whhc-textarea::placeholder{color:#94a3b8}.whhc-input.is-invalid,.whhc-textarea.is-invalid{border-color:var(--whhc-danger)}.whhc-hint{color:var(--whhc-muted);font-size:12px}.whhc-error{color:var(--whhc-danger);font-size:12px;display:none}.whhc-error.is-shown{display:block}.whhc-counter{color:var(--whhc-muted);text-align:right;font-size:12px}.whhc-radios{flex-wrap:wrap;gap:8px;display:flex}.whhc-radio{position:relative}.whhc-radio input{opacity:0;width:0;height:0;position:absolute}.whhc-radio span{border:1.5px solid var(--whhc-line);min-height:38px;color:var(--whhc-body);cursor:pointer;transition:all .18s var(--whhc-ease);border-radius:999px;align-items:center;padding:7px 15px;font-size:13.5px;display:inline-flex}.whhc-radio span:hover{border-color:var(--whhc-primary);color:var(--whhc-primary)}.whhc-radio input:checked+span{background:var(--whhc-primary);border-color:var(--whhc-primary);color:#fff}.whhc-radio input:focus-visible+span{box-shadow:var(--whhc-ring)}.whhc-alert{border-radius:var(--whhc-radius-sm);align-items:flex-start;gap:10px;padding:13px 15px;font-size:13.5px;display:flex}.whhc-alert svg{flex:none;width:17px;height:17px;margin-top:1px}.whhc-alert-success{background:var(--whhc-success-soft);color:var(--whhc-success)}.whhc-alert-error{color:var(--whhc-danger);background:#fef2f2}.whhc-alert-info{background:var(--whhc-primary-soft);color:var(--whhc-primary-dark)}.whhc-alert-warn{background:var(--whhc-warn-soft);color:var(--whhc-warn)}.whhc-empty{text-align:center;padding:44px 20px}.whhc-empty svg{color:#cbd5e1;width:44px;height:44px;margin-bottom:12px}.whhc-empty-title{color:var(--whhc-ink);font-size:15px;font-weight:600}.whhc-empty-desc{color:var(--whhc-muted);margin-top:4px;font-size:13.5px}.whhc-crumbs{flex-wrap:wrap;align-items:center;gap:7px;padding:16px 0 0;font-size:13px;display:flex}.whhc-crumbs a{color:var(--whhc-muted)}.whhc-crumbs a:hover{color:var(--whhc-primary)}.whhc-crumbs svg{color:#cbd5e1;width:13px;height:13px}.whhc-crumbs [aria-current]{color:var(--whhc-ink);font-weight:600}.whhc-progress{z-index:60;background:linear-gradient(90deg, var(--whhc-primary), var(--whhc-accent));width:0;height:3px;transition:width .1s linear;position:fixed;top:0;left:0}.whhc-article{grid-template-columns:minmax(0,1fr) 290px;align-items:start;gap:30px;display:grid}.whhc-article-main{border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);background:#fff;padding:34px 38px}.whhc-article-cat{background:var(--whhc-primary-soft);color:var(--whhc-primary);border-radius:999px;align-items:center;gap:6px;margin-bottom:14px;padding:4px 11px;font-size:12px;font-weight:600;display:inline-flex}.whhc-article-title{color:var(--whhc-ink);letter-spacing:-.02em;margin-bottom:13px;font-size:clamp(23px,3.2vw,31px);font-weight:800;line-height:1.28}.whhc-article-meta{color:var(--whhc-muted);border-bottom:1px solid var(--whhc-line-soft);flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:26px;padding-bottom:20px;font-size:13px;display:flex}.whhc-article-meta span{align-items:center;gap:6px;display:inline-flex}.whhc-article-meta svg{width:14px;height:14px}.whhc-prose{color:var(--whhc-body);font-size:15.5px;line-height:1.85}.whhc-prose h2{color:var(--whhc-ink);letter-spacing:-.01em;margin:32px 0 13px;font-size:20px;font-weight:700}.whhc-prose h3{color:var(--whhc-ink);margin:26px 0 10px;font-size:17px;font-weight:700}.whhc-prose p{margin:0 0 15px}.whhc-prose ul,.whhc-prose ol{margin:0 0 15px;padding-left:22px}.whhc-prose li{margin-bottom:7px}.whhc-prose a{text-underline-offset:2px;font-weight:500;text-decoration:underline}.whhc-prose code{background:var(--whhc-line-soft);border-radius:5px;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}.whhc-prose pre{color:#e2e8f0;border-radius:var(--whhc-radius-sm);background:#0f172a;margin:0 0 16px;padding:16px 18px;font-size:13.5px;line-height:1.65;overflow-x:auto}.whhc-prose pre code{color:inherit;background:0 0;padding:0}.whhc-prose img{border-radius:var(--whhc-radius-sm);max-width:100%;height:auto}.whhc-prose blockquote{border-left:3px solid var(--whhc-primary);background:var(--whhc-primary-soft);border-radius:0 var(--whhc-radius-sm) var(--whhc-radius-sm) 0;color:var(--whhc-primary-dark);margin:0 0 16px;padding:13px 18px}.whhc-prose table{border-collapse:collapse;width:100%;margin:0 0 16px;font-size:14px}.whhc-prose th,.whhc-prose td{border:1px solid var(--whhc-line);text-align:left;padding:9px 13px}.whhc-prose th{background:var(--whhc-bg);color:var(--whhc-ink);font-weight:600}.whhc-feedback{border-top:1px solid var(--whhc-line-soft);margin-top:36px;padding-top:26px}.whhc-feedback-q{color:var(--whhc-ink);margin-bottom:13px;font-size:14.5px;font-weight:600}.whhc-feedback-btns{flex-wrap:wrap;gap:10px;display:flex}.whhc-vote{border:1.5px solid var(--whhc-line);min-height:44px;color:var(--whhc-body);transition:all .2s var(--whhc-ease);background:#fff;border-radius:10px;align-items:center;gap:8px;padding:0 20px;font-size:14px;font-weight:500;display:inline-flex}.whhc-vote svg{width:17px;height:17px}.whhc-vote:hover{border-color:var(--whhc-primary);color:var(--whhc-primary)}.whhc-vote.is-yes:hover,.whhc-vote.is-yes.is-picked{background:var(--whhc-success-soft);border-color:var(--whhc-success);color:var(--whhc-success)}.whhc-vote.is-no:hover,.whhc-vote.is-no.is-picked{border-color:var(--whhc-danger);color:var(--whhc-danger);background:#fef2f2}.whhc-vote:disabled{cursor:default;opacity:.7}.whhc-aside{flex-direction:column;gap:18px;display:flex;position:sticky;top:84px}.whhc-aside-card{border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);background:#fff;padding:19px}.whhc-aside-title{color:var(--whhc-ink);align-items:center;gap:7px;margin-bottom:13px;font-size:13.5px;font-weight:700;display:flex}.whhc-aside-title svg{width:15px;height:15px;color:var(--whhc-primary)}.whhc-aside-list{flex-direction:column;gap:3px;display:flex}.whhc-aside-list a{color:var(--whhc-body);border-radius:var(--whhc-radius-sm);transition:background .16s var(--whhc-ease), color .16s var(--whhc-ease);padding:8px 10px;font-size:13.5px;line-height:1.5}.whhc-aside-list a:hover{background:var(--whhc-primary-soft);color:var(--whhc-primary-dark)}.whhc-tickets{flex-direction:column;gap:12px;display:flex}.whhc-ticket{border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);transition:box-shadow .2s var(--whhc-ease), transform .2s var(--whhc-ease);background:#fff;align-items:center;gap:15px;padding:17px 19px;display:flex}.whhc-ticket:hover{box-shadow:var(--whhc-shadow);transform:translateY(-1px)}.whhc-ticket-main{flex:1;min-width:0}.whhc-ticket-subject{color:var(--whhc-ink);text-overflow:ellipsis;white-space:nowrap;font-size:14.5px;font-weight:600;overflow:hidden}.whhc-ticket-meta{color:var(--whhc-muted);flex-wrap:wrap;gap:13px;margin-top:6px;font-size:12px;display:flex}.whhc-ticket-no{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.whhc-status{border-radius:999px;flex:none;padding:4px 11px;font-size:11.5px;font-weight:600}.whhc-status-open{background:var(--whhc-primary-soft);color:var(--whhc-primary)}.whhc-status-processing{background:var(--whhc-warn-soft);color:var(--whhc-warn)}.whhc-status-resolved,.whhc-status-closed{background:var(--whhc-success-soft);color:var(--whhc-success)}.whhc-thread{flex-direction:column;gap:14px;margin:22px 0;display:flex}.whhc-thread-item{border:1px solid var(--whhc-line);border-radius:var(--whhc-radius);background:#fff;padding:17px 19px}.whhc-thread-item.is-staff{background:var(--whhc-primary-soft);border-color:#bfdbfe}.whhc-thread-head{align-items:center;gap:10px;margin-bottom:9px;font-size:13px;display:flex}.whhc-thread-who{color:var(--whhc-ink);font-weight:600}.whhc-thread-when{color:var(--whhc-muted);margin-left:auto;font-size:12px}.whhc-thread-body{color:var(--whhc-body);white-space:pre-wrap;font-size:14px;line-height:1.7}.whhc-thread-tag{color:var(--whhc-primary);background:#dbeafe;border-radius:999px;padding:2px 9px;font-size:11px;font-weight:600}.whhc-pager{flex-wrap:wrap;justify-content:center;gap:6px;margin-top:22px;display:flex}.whhc-pager a,.whhc-pager span{border:1px solid var(--whhc-line);min-width:40px;height:40px;color:var(--whhc-body);background:#fff;border-radius:10px;justify-content:center;align-items:center;padding:0 13px;font-size:14px;display:inline-flex}.whhc-pager a:hover{border-color:var(--whhc-primary);color:var(--whhc-primary)}.whhc-pager .is-current{background:var(--whhc-primary);border-color:var(--whhc-primary);color:#fff;font-weight:600}.whhc-pager .is-disabled{opacity:.45}.whhc-footer{border-top:1px solid var(--whhc-line);background:#fff;margin-top:20px;padding:30px 0}.whhc-footer-inner{max-width:1200px;color:var(--whhc-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin:0 auto;padding:0 20px;font-size:13px;display:flex}.whhc-footer-links{flex-wrap:wrap;gap:18px;display:flex}.whhc-footer-links a{color:var(--whhc-muted)}.whhc-footer-links a:hover{color:var(--whhc-primary)}.whhc-toast{z-index:120;background:var(--whhc-ink);color:#fff;box-shadow:var(--whhc-shadow-lg);opacity:0;pointer-events:none;transition:all .28s var(--whhc-ease);border-radius:12px;align-items:center;gap:10px;padding:13px 20px;font-size:14px;font-weight:500;display:flex;position:fixed;bottom:30px;left:50%;transform:translate(-50%,20px)}.whhc-toast.is-shown{opacity:1;transform:translate(-50%)}.whhc-toast svg{width:17px;height:17px}.whhc-toast.is-success svg{color:#34d399}.whhc-toast.is-error svg{color:#f87171}@media (width<=1024px){.whhc-article{grid-template-columns:1fr}.whhc-aside{position:static}.whhc-article-main{padding:28px 26px}}@media (width<=768px){.whhc-hero{padding:38px 0 32px}.whhc-grid{grid-template-columns:1fr}.whhc-section{padding:28px 0}.whhc-wrap,.whhc-nav-inner,.whhc-footer-inner{padding-left:16px;padding-right:16px}.whhc-stats{margin-top:-16px}.whhc-article-main{border-radius:var(--whhc-radius-sm);padding:22px 18px}.whhc-faq-a{padding-left:18px}.whhc-ticket{flex-wrap:wrap}}@media (width<=560px){.whhc-search-box{gap:8px;padding:5px 5px 5px 13px}.whhc-search-input{padding:10px 0;font-size:16px}.whhc-search-submit{padding:0 15px;font-size:14px}.whhc-hero-title{font-size:25px}.whhc-cta{grid-template-columns:1fr}.whhc-modal-body,.whhc-modal-head{padding-left:18px;padding-right:18px}.whhc-modal-foot{flex-direction:column-reverse}.whhc-modal-foot .whhc-btn{width:100%}.whhc-ai-form{flex-direction:column}.whhc-ai-send{width:100%}.whhc-brand span{display:none}}[dir=rtl] .whhc-item-arrow,[dir=rtl] .whhc-card-foot svg{transform:scaleX(-1)}[dir=rtl] .whhc-item:hover .whhc-item-arrow{transform:scaleX(-1)translate(3px)}[dir=rtl] .whhc-faq-a{padding-left:18px;padding-right:47px}[dir=rtl] .whhc-msg-user{flex-direction:row}[dir=rtl] .whhc-msg-bot{flex-direction:row-reverse}