:root{--vch-prime:#ff4655;--vch-prime-hover:#e63e4d;--vch-ink:#0f1923;--vch-surface:#fff;--vch-muted:#5a6b7b;--vch-border:#e4e9ef;--vch-success:#10b981;--vch-radius:1rem;--vch-radius-sm:0.6rem;--vch-shadow:0 6px 24px rgba(15,25,35,.07);--vch-shadow-lg:0 18px 44px rgba(15,25,35,.14);--primary:#ff4655;--primary-dark:#e63e4d;--border:#e4e9ef;--surface:#fff;--surface-muted:#f5f7fa;--shadow-soft:0 6px 24px rgba(15,25,35,.07);--text-main:#0f1923;--text-muted:#5a6b7b;}
.vch-studio{margin-bottom:2.5rem;}
.vch-card{background:var(--vch-surface);border:1px solid var(--vch-border);border-radius:var(--vch-radius);box-shadow:var(--vch-shadow);}
.vch-studio-card{padding:1.25rem;}
.vch-viewport{position:relative;overflow:hidden;border-radius:var(--vch-radius-sm);padding:1.5rem;min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid #223141;background:radial-gradient(80% 80% at 50% 40%,#1c2a38 0%,#0d151d 100%);}
.vch-viewport-scan{position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0,rgba(255,255,255,.03) 1px,transparent 1px,transparent 6px);pointer-events:none;}
.vch-viewport-eyebrow{position:absolute;top:1rem;left:1.15rem;margin:0;font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.4);}
.vch-crosshair-canvas{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:120px;height:120px;display:flex;align-items:center;justify-content:center;pointer-events:none;transition:left .25s ease,top .25s ease;}
.vch-crosshair-canvas.vch-follow{transition:none;}
.vch-viewport.vch-has-crosshair{cursor:none;}
.vch-crosshair-dot{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--vch-prime);opacity:0;}
.vch-crosshair-dot.vch-visible{opacity:1;}
.vch-crosshair-lines{position:absolute;width:44px;height:44px;left:50%;top:50%;transform:translate(-50%,-50%);opacity:0;transition:opacity .2s ease;}
.vch-crosshair-lines::before,.vch-crosshair-lines::after{content:'';position:absolute;background:var(--vch-prime,#ff4655);}
.vch-crosshair-lines::before{left:50%;top:0;bottom:0;width:2px;transform:translateX(-50%);}
.vch-crosshair-lines::after{top:50%;left:0;right:0;height:2px;transform:translateY(-50%);}
.vch-crosshair-lines.vch-visible{opacity:1;}
.vch-viewport-label{position:absolute;left:0;right:0;bottom:1rem;margin:0;font-size:.9rem;font-weight:600;color:rgba(255,255,255,.55);text-align:center;padding:0 1rem;}
.vch-viewport.vch-has-crosshair .vch-viewport-label{color:#fff;}
.vch-byline{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;margin:1rem 0 1.35rem;padding:0 .25rem 1.25rem;border-bottom:1px solid var(--vch-border);font-size:.85rem;color:var(--vch-muted);}
.vch-byline-author{font-weight:600;color:var(--text-main);}
.vch-byline-author .author-link{color:var(--vch-prime);text-decoration:none;}
.vch-byline-author .author-link:hover{text-decoration:underline;}
.vch-layout{display:flex;flex-direction:column;gap:1.5rem;}
.vch-panel{min-width:0;}
.vch-panel-form{padding-bottom:1.5rem;border-bottom:1px solid var(--vch-border);}
.vch-controls{padding:0;}
.vch-controls-title{font-size:1.05rem;font-weight:700;color:var(--text-main);margin:0 0 1.1rem;}
.vch-form{display:flex;flex-direction:column;gap:1.1rem;}
.vch-hint{font-size:.88rem;color:var(--vch-muted);margin:0;line-height:1.45;}
.vch-field{display:flex;flex-direction:column;gap:.4rem;}
.vch-label{font-weight:600;font-size:.9rem;color:var(--text-main);}
.vch-select{width:100%;padding:.75rem 2.5rem .75rem 1rem;border:1.5px solid var(--vch-border);border-radius:var(--vch-radius-sm);font-size:1rem;color:var(--text-main);background:var(--vch-surface);appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235a6b7b' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .9rem center;transition:border-color .15s ease;}
.vch-select:focus{outline:none;border-color:var(--vch-prime);box-shadow:0 0 0 3px rgba(255,70,85,.14);}
.vch-field-check{flex-direction:row;align-items:center;gap:.55rem;}
.vch-field-check input[type="checkbox"]{width:1.2rem;height:1.2rem;accent-color:var(--vch-prime);cursor:pointer;}
.vch-check-label{font-weight:600;font-size:.9rem;cursor:pointer;margin:0;color:var(--text-main);}
.vch-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:.35rem;}
.vch-btn{padding:.75rem 1.5rem;border-radius:var(--vch-radius-sm);font-size:1rem;font-weight:700;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border:1.5px solid transparent;}
.vch-btn-primary{flex:1;background:var(--vch-prime);color:#fff;border-color:var(--vch-prime);position:relative;}
.vch-btn-primary:hover{background:var(--vch-prime-hover);transform:translateY(-1px);box-shadow:0 8px 20px rgba(255,70,85,.32);}
.vch-btn-primary:disabled,.vch-btn-primary.vch-loading{cursor:wait;opacity:.9;}
.vch-btn-ghost{background:transparent;color:var(--vch-muted);border-color:var(--vch-border);}
.vch-btn-ghost:hover{border-color:var(--vch-prime);color:var(--vch-prime);}
.vch-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.vch-empty{background:var(--vch-surface);border:1.5px dashed var(--vch-border);border-radius:var(--vch-radius);padding:2.5rem 1.5rem;text-align:center;height:100%;display:flex;align-items:center;justify-content:center;}
.vch-empty-inner{display:flex;flex-direction:column;align-items:center;gap:.65rem;}
.vch-empty-icon{color:var(--vch-prime);opacity:.55;}
.vch-empty-title{font-size:1.1rem;font-weight:700;color:var(--text-main);margin:0;}
.vch-empty-desc{font-size:.9rem;color:var(--vch-muted);margin:0;max-width:260px;}
.vch-results{background:transparent;padding:0;}
.vch-results-head{margin-bottom:1rem;}
.vch-results-title{font-size:1.25rem;font-weight:800;color:var(--text-main);margin:0;}
.vch-results-body{min-height:2rem;}
.vch-card-result{border:1.5px solid var(--vch-border);border-radius:var(--vch-radius-sm);padding:1.25rem;margin-bottom:1rem;transition:border-color .2s,box-shadow .2s;}
.vch-card-result.vch-active{border-color:var(--vch-prime);box-shadow:0 6px 20px rgba(255,70,85,.16);}
.vch-card-name{font-size:1.25rem;font-weight:800;color:var(--vch-prime);margin:0 0 .2rem;}
.vch-card-style{font-size:.92rem;color:var(--vch-muted);margin:0 0 1rem;}
.vch-card-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem;margin-bottom:1rem;}
.vch-meta-item{background:var(--surface-muted);padding:.65rem;border-radius:var(--vch-radius-sm);text-align:center;}
.vch-meta-label{font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--vch-muted);margin-bottom:.2rem;}
.vch-meta-value{font-size:1rem;font-weight:800;color:var(--text-main);}
.vch-card-desc{font-size:.9rem;color:var(--vch-muted);line-height:1.55;margin:0 0 1rem;}
.vch-code-wrap{background:var(--vch-ink);border-radius:var(--vch-radius-sm);padding:1rem;border:1px solid #223141;}
.vch-code-label{font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:.55rem;display:block;color:rgba(255,255,255,.55);}
.vch-code-row{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;}
.vch-code-row code{flex:1;min-width:0;font-size:.82rem;word-break:break-all;padding:.55rem .7rem;background:rgba(255,255,255,.06);border-radius:.45rem;color:#eaf1f8;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;}
.vch-code-copy{background:var(--vch-prime);color:#fff;border:none;padding:.55rem .85rem;border-radius:.45rem;font-size:.85rem;font-weight:700;cursor:pointer;white-space:nowrap;transition:background .15s ease;}
.vch-code-copy:hover{background:var(--vch-prime-hover);}
.vch-code-copy.copied{background:var(--vch-success);}
.vch-tips-list{margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--vch-border);}
.vch-tips-title{font-size:.9rem;font-weight:700;margin:0 0 .5rem;color:var(--text-main);}
.vch-tips-ul{list-style:none;padding:0;margin:0;font-size:.875rem;color:var(--vch-muted);line-height:1.55;}
.vch-tips-ul li{position:relative;padding-left:1.4rem;margin-bottom:.4rem;}
.vch-tips-ul li::before{content:'›';position:absolute;left:.35rem;color:var(--vch-prime);font-weight:800;}
.vch-result-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem;}
.vch-action-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.6rem 1rem;border-radius:var(--vch-radius-sm);font-size:.9rem;font-weight:600;background:var(--surface-muted);border:1px solid var(--vch-border);color:var(--text-main);cursor:pointer;transition:all .15s ease;}
.vch-action-btn:hover{border-color:var(--vch-prime);color:var(--vch-prime);}
.vch-action-btn.copied{background:var(--vch-success);border-color:var(--vch-success);color:#fff;}
.vch-share-wrap{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--vch-border);}
.vch-share-title{font-size:.9rem;font-weight:700;margin:0 0 .5rem;color:var(--text-main);}
.vch-share-btns{display:flex;flex-wrap:wrap;gap:.5rem;}
.vch-share-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.5rem .9rem;border-radius:var(--vch-radius-sm);font-size:.85rem;font-weight:600;text-decoration:none;color:#fff;transition:transform .15s ease;}
.vch-share-btn:hover{transform:translateY(-1px);}
.vch-share-twitter{background:#1da1f2;}
.vch-share-reddit{background:#ff4500;}
.vch-share-telegram{background:#0088cc;}
.vch-loading::after{content:'';position:absolute;top:50%;left:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;border-radius:50%;animation:vch-spin .7s linear infinite;}
@keyframes vch-spin{to{transform:rotate(360deg);}}
.vch-reading{margin:0 auto 1rem;}
.vch-prose{margin-bottom:2.5rem;}
.vch-prose h2{font-size:clamp(1.35rem,2.6vw,1.7rem);font-weight:800;color:var(--text-main);letter-spacing:-.01em;margin:0 0 1rem;}
.vch-prose p{font-size:1.02rem;line-height:1.75;color:#33424f;margin:0 0 1.05rem;}
.vch-prose p:last-child{margin-bottom:0;}
.vch-prose a{color:var(--vch-prime);font-weight:600;text-decoration:none;border-bottom:1px solid rgba(255,70,85,.35);}
.vch-prose a:hover{border-bottom-color:var(--vch-prime);}
.vch-prose strong{color:var(--text-main);}
.vch-info{background:var(--vch-surface);border:1px solid var(--vch-border);border-radius:var(--vch-radius);box-shadow:var(--vch-shadow);padding:1.75rem;margin-bottom:2.5rem;}
.vch-info-head h2{font-size:clamp(1.3rem,2.4vw,1.6rem);font-weight:800;color:var(--text-main);margin:0 0 .6rem;}
.vch-info-head p{font-size:.98rem;line-height:1.65;color:var(--vch-muted);margin:0 0 1.35rem;}
.vch-info-strip{background:var(--vch-ink);border-radius:var(--vch-radius-sm);padding:1.1rem 1rem;margin-bottom:1.4rem;overflow-x:auto;}
.vch-info-code{display:flex;align-items:center;justify-content:center;gap:.15rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1.05rem;font-weight:700;min-width:max-content;}
.vch-info-sep{color:rgba(255,255,255,.3);padding:0 .1rem;}
.vch-seg{padding:.25rem .5rem;border-radius:.4rem;color:#fff;}
.vch-seg-a{background:#6366f1;}
.vch-seg-b{background:#ff4655;}
.vch-seg-c{background:#f59e0b;}
.vch-seg-d{background:#10b981;}
.vch-seg-e{background:#0ea5e9;}
.vch-info-grid{list-style:none;margin:0;padding:0;display:grid;gap:.85rem;}
.vch-info-item{display:grid;grid-template-columns:auto auto 1fr;align-items:baseline;gap:.6rem .8rem;padding-bottom:.85rem;border-bottom:1px solid var(--vch-border);}
.vch-info-item:last-child{border-bottom:none;padding-bottom:0;}
.vch-info-dot{width:.8rem;height:.8rem;border-radius:50%;align-self:center;}
.vch-dot-a{background:#6366f1;}
.vch-dot-b{background:#ff4655;}
.vch-dot-c{background:#f59e0b;}
.vch-dot-d{background:#10b981;}
.vch-dot-e{background:#0ea5e9;}
.vch-info-key{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;font-size:.9rem;color:var(--text-main);white-space:nowrap;}
.vch-info-desc{font-size:.94rem;line-height:1.55;color:var(--vch-muted);}
.vch-info-foot{font-size:.96rem;line-height:1.65;color:#33424f;margin:1.35rem 0 0;}
@media (min-width:768px){.vch-studio-card{padding:1.75rem;}
.vch-layout{flex-direction:row;align-items:stretch;gap:0;}
.vch-panel-form{flex:0 0 300px;padding-bottom:0;border-bottom:none;border-right:1px solid var(--vch-border);padding-right:1.75rem;}
.vch-panel-result{flex:1;min-width:0;padding-left:1.75rem;}
.vch-viewport{min-height:240px;}
.vch-info-item{grid-template-columns:auto 4.5rem 1fr;}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;}}