.callout{border:1px solid var(--hc-line);background:#fff;border-radius:16px;align-items:flex-start;gap:14px;margin:24px 0;padding:16px 18px;display:flex}.callout img{flex:none;width:44px;height:auto;margin-top:-2px}.callout b.t{color:var(--color-ink-900);margin-bottom:2px;font-size:16px;font-weight:800;display:block}.callout-body{color:var(--color-ink-600);font-size:16px}.callout-body>:first-child{margin-top:0}.callout-body>:last-child{margin-bottom:0}.quiz{border:1px solid var(--hc-line);background:#fff;border-radius:24px;margin-top:48px;scroll-margin-top:84px;overflow:hidden}.quiz-head{align-items:center;gap:14px;padding:20px 24px 0;display:flex}.quiz-head img{width:46px;height:auto}.quiz-head h3{margin:0;font-size:22px}.quiz-head p{color:var(--hc-muted);margin:0;font-size:14px;font-weight:600}.qdots{gap:5px;margin-left:auto;display:flex}.qdots i{background:var(--color-ink-100);border-radius:99px;width:26px;height:6px}.qdots i.ok{background:var(--color-moss-500)}.qdots i.cur{background:var(--color-teal-400)}.qdots i.miss{background:var(--color-ink-300)}.quiz-body{padding:18px 24px 4px}.qtext{font:800 21px / 1.3 var(--hc-display);color:var(--color-ink-900);margin-bottom:14px}.opts{gap:8px;display:grid}.opt{border:1.5px solid var(--color-ink-100);font:700 16px var(--hc-body);text-align:left;color:var(--color-ink-700);cursor:pointer;background:#fff;border-radius:14px;align-items:center;gap:12px;padding:12px 14px;display:flex}.opt:disabled{cursor:default}.opt .k{border:1.5px solid var(--color-ink-100);width:26px;height:26px;color:var(--hc-muted);border-radius:8px;flex:none;place-items:center;font-size:12px;font-weight:800;display:grid}.opt:hover:not(:disabled){border-color:var(--color-ink-300)}.opt.picked{border-color:var(--color-teal-500)}.opt.picked .k{border-color:var(--color-teal-500);color:var(--color-teal-600)}.opt.right{border-color:var(--color-moss-500);background:var(--color-moss-50)}.opt.right .k{background:var(--color-moss-500);border-color:var(--color-moss-500);color:#fff}.opt.wrong{border-color:var(--color-coral-500);background:var(--color-coral-50)}.opt.wrong .k{background:var(--color-coral-500);border-color:var(--color-coral-500);color:#fff}.quiz-foot{border-top:1px solid var(--hc-line);align-items:center;gap:16px;margin-top:14px;padding:16px 24px 20px;display:flex}.quiz-foot .muted{color:var(--hc-muted);font-size:14px;font-weight:600}.quiz-foot .btn{margin-left:auto}.verdict{display:block}.verdict b{color:var(--color-ink-900);font-weight:800;display:block}.verdict span{color:var(--color-ink-500);font-size:15px}.quiz .btn{--face:var(--color-teal-500);--lip:var(--color-teal-800);background:var(--face);min-height:46px;box-shadow:0 4px 0 var(--lip);color:#fff;font:700 17px var(--hc-display);white-space:nowrap;cursor:pointer;border:0;border-radius:18px;justify-content:center;align-items:center;padding:0 20px;text-decoration:none;display:inline-flex}.quiz .btn:active{box-shadow:0 1px 0 var(--lip);transform:translateY(3px)}.quiz .btn.secondary{--face:#fff;--lip:var(--color-ink-200);border:1px solid var(--color-ink-100);color:var(--color-ink-700)}.quiz .btn:disabled{--face:var(--color-ink-100);--lip:var(--color-ink-200);color:var(--color-ink-300);cursor:not-allowed}.quiz-done{text-align:center;padding:26px 24px}.quiz-done img{width:120px;height:auto;margin:0 auto 6px}.quiz-done h3{margin:0;font-size:26px}.quiz-done p{max-width:420px;color:var(--color-ink-500);margin:4px auto 18px}.quiz-done p.quiet{margin:-8px auto 16px;font-size:14px}.quiz-done .row{justify-content:center;gap:10px;display:flex}@media (width<=860px){.quiz-head{padding:16px 16px 0}.qdots i{width:16px}.quiz-body{padding:16px 16px 4px}.qtext{font-size:19px}.quiz-foot{flex-wrap:wrap;padding:14px 16px}.quiz-foot .btn{width:100%}.quiz-done .row{flex-direction:column}}.explorer{border:1px solid var(--hc-line);background:#fff;border-radius:20px;grid-template-columns:220px 1fr;align-items:center;gap:28px;margin:12px 0 4px;padding:24px;display:grid}.explorer .phone{background:#11161f;border-radius:30px;padding:7px}.explorer .scr{border-radius:24px;position:relative;overflow:hidden}.explorer .scr img{width:100%;height:auto;display:block}.explorer .scr-android,html[data-os=android] .explorer .scr-ios{display:none}html[data-os=android] .explorer .scr-android{display:block}.explorer .hs{background:var(--color-teal-500);cursor:pointer;border:2px solid #fff;border-radius:50%;width:18px;height:18px;margin:-9px 0 0 -9px;padding:0;position:absolute;box-shadow:0 2px 8px #00000040}.explorer .hs:after{content:"";position:absolute;inset:-13px}.explorer .hs.on{background:var(--color-ink-900);transform:scale(1.3)}.explain .lbl{color:var(--hc-muted);font-size:14px;font-weight:700}.explain h4{margin:4px 0 6px;font-size:24px}.explain p{min-height:3.3em;margin:0}.explain .pager{align-items:center;gap:10px;margin-top:16px;display:flex}.explain .pager button{border:1px solid var(--color-ink-100);width:34px;height:34px;color:var(--color-ink-600);cursor:pointer;background:#fff;border-radius:10px;place-items:center;display:grid}.explain .pager .icon{width:16px;height:16px}.pdots{gap:6px;display:flex}.pdots i{background:var(--color-ink-200);border-radius:50%;width:7px;height:7px}.pdots i.on{background:var(--color-ink-900)}@media (width<=860px){.explorer{grid-template-columns:1fr;padding:18px}.explorer .phone{width:200px;margin:0 auto}}.ladder{border:1px solid var(--hc-line);background:#fff;border-radius:20px;margin:14px 0 4px;padding:24px}.ladder-top{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:18px;display:flex}.ladder-top h4{margin:0;font-size:20px}.ladder .sel{background:var(--color-cream-50);border:1px solid var(--color-ink-100);border-radius:12px;padding:3px;display:inline-flex}.ladder .sel button{font:700 14px var(--hc-body);color:var(--hc-muted);cursor:pointer;background:0 0;border:0;border-radius:9px;padding:4px 12px}.ladder .sel button.on{background:var(--color-ink-900);color:#fff}.rungs{grid-template-columns:repeat(9,minmax(0,1fr));align-items:end;gap:8px;height:110px;display:grid}.rung{background:var(--color-cream-100);cursor:pointer;border:0;border-radius:10px 10px 4px 4px;transition:background .15s}.rung:hover{background:var(--color-cream-200)}.rung.on{background:var(--color-teal-500)}.ends{color:var(--hc-muted);justify-content:space-between;margin-top:8px;font-size:13.5px;font-weight:700;display:flex}.rung-detail{margin-top:18px}.rung-detail h5{font:800 24px var(--hc-display);color:var(--color-ink-900);margin:0}.rung-detail p{margin:4px 0 12px;font-size:16px}.words{flex-wrap:wrap;gap:8px;display:flex}.words span{background:var(--color-cream-50);color:var(--color-ink-700);border-radius:10px;padding:4px 12px;font-size:15.5px;font-weight:700}@media (width<=860px){.ladder{padding:16px}.rungs{gap:5px;height:90px}}figure.shot{margin:12px 0 4px}.shot .shot-android,html[data-os=android] .shot .shot-ios{display:none}html[data-os=android] .shot .shot-android{display:block}.shot[data-kind=app]>div{flex:auto;max-width:420px}.shot[data-kind=web]>div{flex:auto}.shot picture{display:block}.shot[data-kind=web]{padding:14px 14px 0}.shot[data-kind=web] img{border-radius:12px 12px 0 0;width:100%}.shot-missing{border:2px dashed var(--color-ink-200);background:var(--color-cream-100);min-height:140px;color:var(--hc-muted);align-items:center;padding:18px;font-size:15px;font-weight:700}@layer starlight.components{.sl-steps{--bullet-size:calc(var(--sl-line-height) * 1rem);--bullet-margin:.375rem;counter-reset:steps-counter var(--sl-steps-start,0);padding-inline-start:0;list-style:none}.sl-steps>li{counter-increment:steps-counter;padding-inline-start:calc(var(--bullet-size) + 1rem);min-height:calc(var(--bullet-size) + var(--bullet-margin));padding-bottom:1px;position:relative}.sl-steps>li+li{margin-top:0}.sl-steps>li:before{content:counter(steps-counter);top:0;width:var(--bullet-size);height:var(--bullet-size);line-height:var(--bullet-size);font-size:var(--sl-text-xs);text-align:center;color:var(--sl-color-white);background-color:var(--sl-color-gray-6);box-shadow:inset 0 0 0 1px var(--sl-color-gray-5);border-radius:99rem;font-weight:600;position:absolute;inset-inline-start:0}.sl-steps>li:after{--guide-width:1px;content:"";top:calc(var(--bullet-size) + var(--bullet-margin));bottom:var(--bullet-margin);width:var(--guide-width);background-color:var(--sl-color-hairline-light);position:absolute;inset-inline-start:calc((var(--bullet-size) - var(--guide-width)) / 2)}}@layer starlight.content{.sl-steps>li>:first-child{--lh:calc(1em * var(--sl-line-height));--shift-y:calc(.5 * (var(--bullet-size) - var(--lh)));transform:translateY(var(--shift-y));margin-bottom:var(--shift-y)}.sl-steps>li>:first-child:where(h1,h2,h3,h4,h5,h6){--lh:calc(1em * var(--sl-line-height-headings))}@supports (--prop:1lh){.sl-steps>li>:first-child{--lh:1lh}}}.video{border:1px solid var(--hc-line);background:#fff;border-radius:20px;margin:28px 0 0;overflow:hidden}.video-stage{aspect-ratio:16/9;background:var(--color-ink-900);position:relative}.video-stage iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.bigplay{cursor:pointer;background:0 0;border:0;place-items:center;padding:0;display:grid;position:absolute;inset:0}.bigplay img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.bigplay span{background:#fffffff5;border-radius:50%;place-items:center;width:76px;height:76px;display:grid;position:relative;box-shadow:0 10px 30px #0003}.bigplay .icon{width:30px;height:30px;color:var(--color-teal-600);fill:var(--color-teal-600);margin-left:4px}.chapters{flex-wrap:wrap;gap:4px;padding:10px 12px;display:flex}.chapters button{font:700 14px var(--hc-body);color:var(--color-ink-500);cursor:pointer;background:0 0;border:0;border-radius:10px;padding:6px 10px}.chapters button b{color:var(--hc-muted);margin-right:6px;font-weight:700}.chapters button.on,.chapters button:hover{background:var(--color-cream-50);color:var(--color-ink-900)}.transcript{border-top:1px solid var(--hc-line);padding:4px 16px 14px}.transcript summary{color:var(--color-teal-600);cursor:pointer;padding:10px 0 4px;font-size:14px;font-weight:700}.transcript p{color:var(--color-ink-600);margin:8px 0 0;font-size:15px}.video-placeholder{aspect-ratio:16/9;text-align:center;color:var(--color-ink-500,#4e586a);background:repeating-linear-gradient(45deg,#f4ecd9 0 10px,#fbf7f0 10px 20px);place-items:center;padding:1.5rem;font-weight:700;display:grid}