@keyframes pkIn{0%{opacity:0}to{opacity:1}}@keyframes pkCaret{50%{opacity:0}}.pk-sec{box-sizing:border-box;background:var(--demo-ink);width:100%;color:var(--demo-paper);overflow-anchor:none;z-index:51;padding:96px 40px;font-family:Roboto,Helvetica Neue,Helvetica,sans-serif;position:relative}.pk-sec *{box-sizing:border-box;letter-spacing:0}.pk-inner{flex-direction:column;align-items:center;width:100%;max-width:1120px;margin:0 auto;display:flex}.ah-page .pk-sec .pk-h2{text-align:center;max-width:820px;color:var(--demo-paper);margin:0;font-family:Montserrat,sans-serif;font-size:52px;font-weight:900;line-height:1.05}.pk-h2 span{color:var(--demo-yellow)}.ah-page .pk-sec .pk-sub{text-align:center;color:var(--demo-border);margin:16px 0 0;font-size:18px;line-height:1.5}.pk-win{background:var(--demo-pink);width:100%;box-shadow:var(--demo-shadow);color:var(--demo-ink);border-radius:16px;flex-shrink:0;margin-top:40px;overflow:hidden}.pk-urlbar{background:var(--demo-chrome);height:38px;color:var(--demo-muted);justify-content:center;align-items:center;padding:0 16px;font-size:12px;display:flex;position:relative}.pk-dots{gap:7px;display:flex;position:absolute;left:16px}.pk-dots i{background:var(--demo-chrome-dot);border-radius:50%;width:11px;height:11px}.pk-head{background:var(--demo-yellow);justify-content:space-between;align-items:center;height:60px;padding:0 40px;display:flex}.pk-logo{font-family:Montserrat,sans-serif;font-size:20px;font-weight:900}.pk-nav{align-items:center;gap:14px;font-size:13px;font-weight:700;display:flex}.pk-navpill{border:1.5px solid var(--demo-ink);background:var(--demo-pink);border-radius:999px;padding:6px 14px}.pk-body{background:linear-gradient(var(--demo-yellow) 0px,var(--demo-yellow) 110px,var(--demo-pink) 190px);height:720px;padding:26px 40px 48px;position:relative;overflow:hidden}.pk-formwrap{max-width:680px;margin:0 auto}.pk-crumb{font-size:12px;line-height:normal}.pk-crumb>span{opacity:.5}.pk-h1{margin-top:10px;font-family:Montserrat,sans-serif;font-size:38px;font-weight:900;line-height:normal}.pk-form{background:var(--demo-paper);box-shadow:var(--demo-form-shadow);border-radius:22px;flex-direction:column;margin-top:20px;padding:28px;display:flex}.pk-label{font-size:11px;font-weight:700;line-height:normal}.pk-lbl{margin-top:10px}.pk-chips{flex-wrap:wrap;gap:8px;display:flex}.pk-chip{border:1.5px solid var(--demo-soft-border);background:var(--demo-paper);color:var(--demo-muted);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:700;line-height:normal;transition:background .2s,color .2s}.pk-chip.is-selected{background:var(--demo-ink);color:var(--demo-paper);border-color:var(--demo-ink)}.pk-gap{margin-top:22px}.pk-tfield,.pk-dfield{border:1.5px solid var(--demo-border);height:46px;color:var(--demo-ink);border-radius:12px;padding:12px 14px;font-size:15px;line-height:1.4;overflow:hidden}.pk-dfield{height:116px;line-height:1.5}.pk-tfield.is-typing,.pk-dfield.is-typing{border-color:var(--demo-ink)}.pk-tfield.is-placeholder,.pk-dfield.is-placeholder{color:var(--demo-placeholder)}.pk-caret{background:var(--demo-ink);vertical-align:-3px;width:2px;height:16px;margin-left:1px;animation:1s step-end infinite pkCaret;display:inline-block}.pk-descriptionlabel{justify-content:space-between;align-items:baseline;display:flex}.pk-hint{color:var(--demo-muted);font-size:12px}.pk-sfield{border:1.5px dashed var(--demo-upload-border);background:var(--demo-upload);border-radius:12px;justify-content:center;align-items:center;gap:12px;height:70px;display:flex}.pk-sfield>span{color:var(--demo-muted);font-size:13px}.pk-screenshot{background:var(--demo-paper);border-radius:10px;align-items:center;gap:12px;padding:8px 12px;font-size:13px;line-height:normal;display:flex}.pk-chart{background:var(--demo-shot);border-radius:6px;align-items:flex-end;gap:4px;width:60px;height:40px;padding:6px;display:flex}.pk-chart i{background:var(--demo-grey);width:8px;height:10px}.pk-chart i:nth-child(2){height:18px}.pk-chart i:nth-child(3){height:13px}.pk-chart i:nth-child(4){background:var(--demo-ink);height:26px}.pk-send{border-top:1px solid var(--demo-faint-border);align-items:center;gap:16px;margin-top:24px;padding-top:20px;display:flex}.pk-buttonwrap{flex-shrink:0;position:relative}.pk-sendbtn{background:var(--demo-disabled);color:var(--demo-paper);white-space:nowrap;border-radius:999px;padding:14px 26px;font-family:Montserrat,sans-serif;font-size:15px;font-weight:800;line-height:normal;transition:background .2s,transform .12s}.pk-sendbtn.is-ready{background:var(--demo-ink)}.pk-sendbtn.is-pressed,.pk-solvebtn.is-pressed{transform:scale(.96)}.pk-pointer{position:absolute;bottom:-14px;right:18px}.pk-pointer path{fill:var(--demo-ink);stroke:var(--demo-paper)}.pk-note{color:var(--demo-muted);font-size:13px}.pk-in{animation:.45s both pkIn}.pk-pills{gap:8px;margin-top:12px;display:flex}.pk-pills>div{background:var(--demo-paper);border-radius:999px;padding:5px 11px;font-size:11px;font-weight:700;line-height:normal;transition:background .3s}.pk-pills .is-waiting{background:var(--demo-waiting);color:var(--demo-waiting-ink)}.pk-pills .is-answered{color:var(--demo-answered-ink)}.pk-pills .is-solved{background:var(--demo-solved);color:var(--demo-solved-ink)}.pk-ttl{max-width:760px;height:72px;margin-top:10px;font-family:Montserrat,sans-serif;font-size:32px;font-weight:900;line-height:1.12;overflow:hidden}.pk-cols{align-items:flex-start;gap:24px;margin-top:20px;display:flex}.pk-stack{flex-direction:column;flex:1.7;gap:14px;min-width:0;display:flex}.pk-post{background:var(--demo-paper);border-radius:20px;gap:14px;height:168px;padding:20px;display:flex;overflow:hidden}.pk-av{background:var(--demo-ink);width:38px;height:38px;color:var(--demo-yellow);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.pk-postcopy,.pk-answercopy{flex:1;min-width:0}.pk-meta{font-size:13px;line-height:normal}.pk-meta span{color:var(--demo-muted)}.pk-desc{margin-top:8px;font-size:15px;line-height:1.6}.pk-shot{margin-top:12px;display:inline-flex}.pk-smallshot{background:var(--demo-shot);color:var(--demo-muted);gap:10px;padding:6px 10px;font-size:12px}.pk-smallshot .pk-chart{background:var(--demo-soft-border);gap:3px;width:48px;height:32px;padding:5px}.pk-smallshot .pk-chart i{width:6px;height:8px}.pk-smallshot .pk-chart i:nth-child(2){height:14px}.pk-smallshot .pk-chart i:nth-child(3){height:10px}.pk-smallshot .pk-chart i:nth-child(4){height:20px}.pk-answer-slot{visibility:hidden;flex-direction:column;gap:14px;height:338px;display:flex}.pk-answer-slot.is-visible{visibility:visible}.pk-later{color:var(--demo-later-ink);text-align:center;flex-shrink:0;align-items:center;gap:12px;height:18px;font-size:12px;font-weight:700;display:flex}.pk-later i{background:color-mix(in oklab,var(--demo-ink) 18%,transparent);flex:1;height:1px}.pk-ans{background:var(--demo-answer);border-radius:20px;gap:14px;height:306px;padding:20px;display:flex}.pk-avside{object-fit:cover;object-position:center 25%;border-radius:50%;flex-shrink:0;width:38px;height:38px}.pk-author{flex-wrap:wrap;align-items:center;gap:8px;min-height:18px;font-size:13px;line-height:normal;display:flex}.pk-author img{object-fit:cover;object-position:center 25%;border-radius:50%;flex-shrink:0;width:24px;height:24px}.pk-author>span{background:var(--demo-yellow);border-radius:4px;padding:2px 6px;font-size:10px;font-weight:700}.pk-anstxt{height:144px;margin-top:8px;font-size:15px;line-height:1.6}.pk-lesson{margin-top:12px;font-size:14px;line-height:normal}.pk-lesson strong{font-weight:700;text-decoration:underline}.pk-resolution{height:66px;margin-top:16px}.pk-nudge{background:var(--demo-paper);border-radius:14px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;display:flex}.pk-nudge>div:first-child{font-size:14px;font-weight:700;line-height:normal}.pk-solvebtn{background:var(--demo-ink);color:var(--demo-paper);white-space:nowrap;border-radius:999px;padding:10px 18px;font-size:13px;font-weight:700;line-height:normal;transition:transform .12s}.pk-solved{background:var(--demo-solved);color:var(--demo-solved-ink);border-radius:14px;padding:12px 14px;font-size:14px;font-weight:700;line-height:normal}.pk-side{background:var(--demo-paper);border-radius:20px;flex:1;min-width:0;padding:22px}.pk-sidetitle{font-family:Montserrat,sans-serif;font-size:17px;font-weight:800;line-height:normal}.pk-timeline{margin-top:16px}.pk-timelineitem{gap:12px;display:flex}.pk-track{flex-direction:column;align-items:center;display:flex}.pk-track i{background:var(--demo-paper);border:2px solid var(--demo-grey);border-radius:50%;width:14px;height:14px;transition:background .3s}.pk-timelineitem.is-on .pk-track i{background:var(--demo-ink);border-color:var(--demo-ink)}.pk-track b{background:var(--demo-soft-border);flex:1;width:2px;min-height:24px}.pk-track b.is-on{background:var(--demo-ink)}.pk-timelinetext{padding-bottom:14px}.pk-timelinetext strong{color:var(--demo-muted);font-size:14px;font-weight:700;line-height:normal;display:block}.pk-timelineitem.is-on strong{color:var(--demo-ink)}.pk-timelinetext span{color:var(--demo-muted);font-size:12px;line-height:normal;display:block}.pk-sec .pk-pause{background:var(--demo-yellow);color:var(--demo-ink);height:44px;min-height:44px;box-shadow:none;border:0;border-radius:999px;justify-content:center;align-items:center;gap:9px;margin-top:20px;padding:0 20px;font-family:Roboto,sans-serif;font-size:14px;font-weight:700;text-decoration:none;display:inline-flex}.pk-sec .pk-pause:hover{background:var(--demo-yellow);color:var(--demo-ink);opacity:.9}.pk-sec .pk-pause svg{flex:none}.pk-mb{display:none}@media(max-width:639px){.pk-sec{flex-direction:column;justify-content:center;min-height:calc(100svh - 72px);padding:20px 12px 8px;display:flex}.ah-page .pk-sec .pk-h2{font-size:25px}.ah-page .pk-sec .pk-sub,.pk-urlbar,.pk-nav1,.pk-crumb,.pk-hint,.pk-note,.pk-side,.pk-meta,.pk-shot,.pk-avside,.pk-dk{display:none!important}.pk-mb{display:inline}.pk-author img.pk-mb{object-fit:cover;object-position:center 25%;border-radius:50%;flex-shrink:0;width:24px;height:24px;display:block}.pk-win{margin-top:16px}.pk-head{height:44px;padding:0 14px}.pk-logo{font-size:17px}.pk-nav{gap:6px;font-size:10px}.pk-navpill{padding:6px 8px}.pk-body{height:500px;padding:14px 12px 12px;overflow:hidden}.pk-h1{margin-top:0;font-size:24px}.pk-form{margin-top:10px;padding:12px}.pk-gap{margin-top:8px}.pk-chip{padding:7px 10px;font-size:12px}.pk-lbl{margin-top:6px}.pk-tfield{height:58px;padding:7px 10px;font-size:14px;overflow:hidden}.pk-dfield{height:102px;padding:7px 10px;font-size:14px;overflow:hidden}.pk-descriptionlabel{flex-direction:column;align-items:flex-start;gap:4px}.pk-sfield{height:46px;font-size:14px}.pk-send{gap:10px;margin-top:10px;padding-top:10px}.pk-sendbtn{padding:12px 22px;font-size:14px}.pk-pills{margin-top:0}.pk-ttl{-webkit-line-clamp:2;-webkit-box-orient:vertical;height:46px;margin-top:8px;font-size:20px;line-height:1.15;display:-webkit-box;overflow:hidden}.pk-cols{flex-direction:column;gap:0;margin-top:8px}.pk-stack{flex:none;gap:8px;width:100%}.pk-post{gap:10px;height:auto;padding:12px}.pk-av{width:28px;height:28px;font-size:11px}.pk-desc{-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-top:0;font-size:13px;line-height:1.4;display:-webkit-box;overflow:hidden}.pk-answer-slot,.pk-ans,.pk-anstxt,.pk-lesson,.pk-resolution{height:auto!important;min-height:0!important}.pk-answer-slot{gap:8px}.pk-ans{gap:0;padding:14px}.pk-author{gap:6px;font-size:12px}.pk-author strong{min-width:0}.pk-anstxt{margin-top:6px;font-size:13.5px;line-height:1.45}.pk-lesson{margin-top:8px;font-size:12px}.pk-resolution{margin-top:8px}.pk-nudge{white-space:nowrap;flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:8px;padding:8px}.pk-nudge>div:first-child{font-size:13px}.pk-solvebtn{white-space:nowrap;padding:8px 10px;font-size:12px}.pk-sec .pk-pause{gap:7px;height:36px;min-height:36px;margin-top:6px;padding:0 16px}}@media(prefers-reduced-motion:reduce){.pk-in,.pk-caret{animation:none}.pk-sec *{transition:none}}