.ve-embed-tpl-systemdesign *{box-sizing:border-box;margin:0;padding:0}.ve-embed-tpl-systemdesign{scroll-behavior:smooth}.ve-embed-tpl-systemdesign .bar{max-width:1240px;margin:0 auto;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.ve-embed-tpl-systemdesign .prog-wrap{flex:1;min-width:200px;display:flex;align-items:center;gap:14px}.ve-embed-tpl-systemdesign .prog{flex:1;height:6px;border-radius:99px;background:var(--line);overflow:hidden}.ve-embed-tpl-systemdesign .count{font-family:var(--fmono);font-size:13.5px;color:var(--muted);white-space:nowrap}.ve-embed-tpl-systemdesign .count b{color:var(--ink)}.ve-embed-tpl-systemdesign .badge2{font-family:var(--fmono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;padding:3px 8px;border-radius:99px;font-weight:700;flex:none;color:#fff;color:lch(from var(--violet) calc((49.44 - l) * infinity) 0 0);background:var(--violet)}.ve-embed-tpl-systemdesign .predict{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:17px 18px;margin-bottom:20px;position:relative;overflow:hidden}.ve-embed-tpl-systemdesign .predict:before{content:"";position:absolute;top:0;left:0;bottom:0;width:3px;background:var(--violet)}.ve-embed-tpl-systemdesign .predict .ptitle{font-family:var(--fdisp);font-weight:700;font-size:17px;line-height:1.35;margin-bottom:13px;display:flex;gap:10px;align-items:flex-start}.ve-embed-tpl-systemdesign .opts{display:flex;flex-direction:column;gap:8px}.ve-embed-tpl-systemdesign .opt:hover:not(:disabled){border-color:var(--ink);transform:translate(2px)}.ve-embed-tpl-systemdesign .opt:focus-visible{outline:2px solid var(--violet);outline-offset:2px}.ve-embed-tpl-systemdesign .opt:disabled{cursor:default}.ve-embed-tpl-systemdesign .opt .oletter{font-family:var(--fmono);font-size:.72rem;font-weight:700;color:var(--dim);border:1px solid var(--line2);border-radius:6px;padding:2px 7px;flex:none;margin-top:1px}.ve-embed-tpl-systemdesign .opt.right{border-color:var(--good);background:#11a05f0f}.ve-embed-tpl-systemdesign .opt.right .oletter{color:#fff;color:lch(from var(--good) calc((49.44 - l) * infinity) 0 0);background:var(--good);border-color:var(--good)}.ve-embed-tpl-systemdesign .opt.wrong{border-color:var(--orange);background:#e8692a0f}.ve-embed-tpl-systemdesign .opt.wrong .oletter{color:#fff;color:lch(from var(--orange) calc((49.44 - l) * infinity) 0 0);background:var(--orange);border-color:var(--orange)}.ve-embed-tpl-systemdesign .opt .why{display:block;font-size:13px;color:var(--muted);margin-top:5px;line-height:1.5}.ve-embed-tpl-systemdesign .skiplink{background:none;border:none;font-family:var(--fmono);font-size:.72rem;color:var(--dim);cursor:pointer;margin-top:11px;text-decoration:underline dotted;padding:0}.ve-embed-tpl-systemdesign .skiplink:hover{color:var(--ink)}.ve-embed-tpl-systemdesign .verdict{margin-top:13px;font-size:14px;font-weight:600;color:var(--ink)}.ve-embed-tpl-systemdesign .verdict.good{color:var(--good)}.ve-embed-tpl-systemdesign .verdict.miss{color:var(--orange)}.ve-embed-tpl-systemdesign .env{background:var(--panel);border:1px solid var(--line);border-radius:12px;margin-bottom:20px;overflow:hidden}.ve-embed-tpl-systemdesign .env summary{list-style:none;cursor:pointer;padding:12px 16px;font-family:var(--fmono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:9px;user-select:none}.ve-embed-tpl-systemdesign .env summary::-webkit-details-marker{display:none}.ve-embed-tpl-systemdesign .env summary:hover{color:var(--ink)}.ve-embed-tpl-systemdesign .env summary .chev{margin-left:auto;transition:transform .2s;font-size:13px}.ve-embed-tpl-systemdesign .env[open] summary .chev{transform:rotate(180deg)}.ve-embed-tpl-systemdesign .env-body{padding:0 16px 14px;display:flex;flex-direction:column;gap:0}.ve-embed-tpl-systemdesign .erow{display:flex;gap:14px;align-items:baseline;border-top:1px dashed var(--line);padding:9px 0;flex-wrap:wrap}.ve-embed-tpl-systemdesign .erow .emath{font-family:var(--fmono);font-size:13px;color:var(--acid-ink);font-weight:700;flex:none}.ve-embed-tpl-systemdesign .erow .enote{font-size:13.5px;color:var(--muted);line-height:1.45}.ve-embed-tpl-systemdesign .stage-btns{display:flex;gap:8px;align-items:center}.ve-embed-tpl-systemdesign .chaos:hover{border-color:var(--acid-ink);color:var(--acid-ink);transform:translateY(-1px)}.ve-embed-tpl-systemdesign .chaos.armed{background:var(--acid);border-color:var(--acid);color:#fff;color:lch(from var(--acid) calc((49.44 - l) * infinity) 0 0)}.ve-embed-tpl-systemdesign .node.down{opacity:.4}.ve-embed-tpl-systemdesign .node.down .nbg{stroke:var(--acid-ink);stroke-dasharray:7 5}.ve-embed-tpl-systemdesign .chaos-note b{color:var(--acid-ink)}.ve-embed-tpl-systemdesign .legend span.on{background:var(--ink);color:var(--bg2)}.ve-embed-tpl-systemdesign .node.dimmed{opacity:.14;transition:opacity .25s}.ve-embed-tpl-systemdesign .callscore{font-size:14.5px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:99px;display:inline-block;padding:8px 18px;margin:8px 0 2px}.ve-embed-tpl-systemdesign .callscore b{color:var(--acid-ink);font-family:var(--fdisp)}.ve-embed-tpl-systemdesign .ptitle2{font-family:var(--fdisp);font-weight:700;font-size:18px;margin:4px 0 10px;text-align:left}.ve-embed-tpl-systemdesign .pokes{text-align:left;margin:20px 0 6px}.ve-embed-tpl-systemdesign .poke{border:1px solid var(--line);border-radius:10px;background:var(--panel);margin-bottom:7px;overflow:hidden}.ve-embed-tpl-systemdesign .poke summary{list-style:none;cursor:pointer;padding:11px 14px;font-size:14px;font-weight:600;color:var(--ink);display:flex;gap:9px;align-items:baseline;user-select:none}.ve-embed-tpl-systemdesign .poke summary::-webkit-details-marker{display:none}.ve-embed-tpl-systemdesign .poke summary:before{content:"?";font-family:var(--fmono);color:var(--violet);font-weight:700;flex:none}.ve-embed-tpl-systemdesign .poke p{padding:0 14px 12px 33px;font-size:13.5px;color:var(--muted);line-height:1.55}.ve-embed-tpl-systemdesign .quizbox{text-align:left;margin:20px 0 8px}.ve-embed-tpl-systemdesign .qq{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:13px 15px;margin-bottom:9px}.ve-embed-tpl-systemdesign .qqq{font-size:14.5px;font-weight:600;margin-bottom:10px;color:var(--ink)}.ve-embed-tpl-systemdesign .qopts{display:flex;flex-wrap:wrap;gap:7px}.ve-embed-tpl-systemdesign .qopt:hover:not(.lock){border-color:var(--ink);transform:translateY(-1px)}.ve-embed-tpl-systemdesign .qopt.right{border-color:var(--good);background:#11a05f17;font-weight:700;color:var(--ink)}.ve-embed-tpl-systemdesign .qopt.wrong{border-color:var(--orange);background:#e8692a17}.ve-embed-tpl-systemdesign .qwhy{font-size:12.5px;color:var(--muted);margin-top:9px;line-height:1.5}.ve-embed-tpl-systemdesign .qscore{margin-top:14px;font-size:15.5px;text-align:center;color:var(--ink)}.ve-embed-tpl-systemdesign .qscore b{font-family:var(--fdisp);font-size:22px;color:var(--acid-ink)}.ve-embed-tpl-systemdesign .qbtns{display:flex;gap:10px;justify-content:center;margin-top:12px;flex-wrap:wrap}.ve-embed-tpl-systemdesign .qopt.lock{cursor:default}.ve-embed-tpl-systemdesign .lesson,.ve-embed-tpl-systemdesign .stage{min-width:0}@media(max-width:380px){.ve-embed-tpl-systemdesign .stat{min-width:100%}}.ve-embed-tpl-systemdesign .stage-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;padding:2px 4px}.ve-embed-tpl-systemdesign .replay:active{transform:translateY(0)}.ve-embed-tpl-systemdesign .replay svg{width:12px;height:12px}.ve-embed-tpl-systemdesign .canvas-box::-webkit-scrollbar{height:6px}.ve-embed-tpl-systemdesign .canvas-box::-webkit-scrollbar-thumb{background:var(--line2);border-radius:99px}.ve-embed-tpl-systemdesign .scrollhint{display:none;font-family:var(--fmono);font-size:.72rem;color:var(--dim);text-align:center;margin-top:8px;letter-spacing:.04em}.ve-embed-tpl-systemdesign svg.diagram text{font-family:var(--fbody);user-select:none}.ve-embed-tpl-systemdesign .node{cursor:pointer}.ve-embed-tpl-systemdesign .node .nbg{fill:var(--panel2);stroke:var(--line2);stroke-width:1.5;rx:13}.ve-embed-tpl-systemdesign .node .nbar{rx:3}.ve-embed-tpl-systemdesign .node .ntag{fill:var(--dim);font-size:.72rem;font-family:var(--fmono);letter-spacing:.1em;text-transform:uppercase}.ve-embed-tpl-systemdesign .node:hover .nbg{stroke:var(--ink);filter:drop-shadow(0 4px 8px rgba(30,40,30,.16))}.ve-embed-tpl-systemdesign .node.fresh .nbg{stroke-width:2}.ve-embed-tpl-systemdesign .t-gateway .nbar{fill:var(--acid)}.ve-embed-tpl-systemdesign .t-gateway:hover .nbg,.ve-embed-tpl-systemdesign .t-gateway.fresh .nbg{stroke:var(--acid)}.ve-embed-tpl-systemdesign .t-service .nbar{fill:var(--ink)}.ve-embed-tpl-systemdesign .edge{stroke:var(--wire);stroke-width:1.8;fill:none;transition:stroke-dashoffset .7s ease,opacity .4s ease}.ve-embed-tpl-systemdesign .legend span{display:inline-flex;align-items:center;gap:6px;font-family:var(--fmono);font-size:.72rem;color:var(--muted)}.ve-embed-tpl-systemdesign .legend i{width:10px;height:10px;border-radius:2px;display:inline-block}.ve-embed-tpl-systemdesign .tip{position:absolute;z-index:20;max-width:230px;pointer-events:none;opacity:0;transform:translateY(4px);transition:opacity .15s,transform .15s;background:var(--bg);border:1px solid var(--line2);border-radius:10px;padding:11px 13px;box-shadow:var(--shadow);font-size:13.5px;color:var(--muted);line-height:1.5}.ve-embed-tpl-systemdesign .tip.show{opacity:1;transform:translateY(0)}.ve-embed-tpl-systemdesign .tip b{color:var(--ink);font-family:var(--fdisp);font-size:15px;display:block;margin-bottom:3px}.ve-embed-tpl-systemdesign .kicker .step-tag{color:var(--dim)}.ve-embed-tpl-systemdesign .kicker .pipe{color:var(--muted)}.ve-embed-tpl-systemdesign .block{border-left:2px solid var(--line2);padding:2px 0 2px 16px;margin-bottom:18px}.ve-embed-tpl-systemdesign .block .lab{font-family:var(--fmono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:7px;display:flex;align-items:center;gap:7px}.ve-embed-tpl-systemdesign .block.problem{border-color:var(--orange)}.ve-embed-tpl-systemdesign .block.problem .lab{color:var(--orange)}.ve-embed-tpl-systemdesign .block p b{color:var(--ink);font-weight:600}.ve-embed-tpl-systemdesign .concept{background:linear-gradient(135deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:20px;position:relative;overflow:hidden}.ve-embed-tpl-systemdesign .concept .ctitle{font-family:var(--fdisp);font-weight:700;font-size:16.5px;margin-bottom:6px;display:flex;align-items:center;gap:9px}.ve-embed-tpl-systemdesign .concept p{font-size:15.5px;color:var(--muted);line-height:1.6}.ve-embed-tpl-systemdesign .concept p b{color:var(--ink)}.ve-embed-tpl-systemdesign .stats{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.ve-embed-tpl-systemdesign .stat{flex:1;min-width:120px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:13px 15px}.ve-embed-tpl-systemdesign .stat .lbl{font-family:var(--fmono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--dim);margin-top:6px}.ve-embed-tpl-systemdesign .btn:hover{border-color:var(--ink);transform:translateY(-1px)}.ve-embed-tpl-systemdesign .btn:disabled{opacity:.3;cursor:not-allowed;transform:none}.ve-embed-tpl-systemdesign .btn svg{width:15px;height:15px}.ve-embed-tpl-systemdesign .dots{display:flex;gap:7px;margin-left:auto;align-items:center}.ve-embed-tpl-systemdesign .dots button{width:9px;height:9px;border-radius:50%;border:none;background:var(--line2);cursor:pointer;padding:0;transition:all .2s}.ve-embed-tpl-systemdesign .dots button:hover{background:var(--muted)}.ve-embed-tpl-systemdesign .finale{text-align:center;padding:14px 6px}.ve-embed-tpl-systemdesign .recap{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:18px 0;text-align:left}@media(max-width:520px){.ve-embed-tpl-systemdesign .recap{grid-template-columns:1fr}}.ve-embed-tpl-systemdesign .recap .r{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:14.5px;color:var(--muted);display:flex;gap:9px;align-items:flex-start;line-height:1.45}.ve-embed-tpl-systemdesign .recap .r b{color:var(--ink)}.ve-embed-tpl-systemdesign footer{text-align:center;color:var(--dim);font-family:var(--fmono);font-size:.72rem;padding:30px 20px;position:relative;z-index:1}.ve-embed-tpl-systemdesign .conf{position:fixed;width:9px;height:9px;top:-20px;z-index:50;pointer-events:none;border-radius:1px}@media(prefers-reduced-motion:reduce){.ve-embed-tpl-systemdesign *{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto}}.ve-embed-tpl-systemdesign .ve-back-bar{position:fixed;top:20px;left:20px;z-index:100;display:inline-flex;align-items:center;gap:8px;padding:10px 16px;background:color-mix(in srgb,transparent 5%,color-mix(in srgb,var(--bg) 95%,var(--text)));border:1px solid color-mix(in srgb,var(--text) 14%,transparent);border-radius:99px;color:color-mix(in srgb,var(--text) 91%,var(--bg));font-family:Inter,Inter Fallback,sans-serif;font-size:14px;font-weight:500;text-decoration:none;backdrop-filter:blur(12px);transition:all .2s ease}.ve-embed-tpl-systemdesign .ve-back-bar:hover{background:color-mix(in srgb,var(--bg) 95%,var(--text));border-color:#191d24;transform:translateY(-2px)}.ve-embed-tpl-systemdesign .ve-back-bar svg{width:16px;height:16px}@media(max-width:640px){.ve-embed-tpl-systemdesign .ve-back-bar{top:12px;left:12px;padding:8px 12px;font-size:13px}}.ve-embed-tpl-systemdesign .sd-wt{--wt-measure:44rem;--wt-body:1.0625rem;--wt-small:.9375rem;--wt-micro:.8125rem;--wt-step:clamp(40px,5vw,60px);max-width:var(--wt-measure);margin:0 auto;padding:clamp(52px,7vw,88px) 24px 8px;box-sizing:border-box}.ve-embed-tpl-systemdesign .sd-wt-step>p,.ve-embed-tpl-systemdesign .sd-wt-qlist p{margin:0 0 1.05em;line-height:1.72;font-size:var(--wt-body);color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-step>p:last-child{margin-bottom:0}.ve-embed-tpl-systemdesign .sd-wt code{font-family:var(--fmono);background:color-mix(in srgb,var(--ink) 8%,transparent);color:var(--ink);padding:.1em .38em;border-radius:3px;font-size:.88em}.ve-embed-tpl-systemdesign .sd-wt-head{margin:0 0 var(--wt-step)}.ve-embed-tpl-systemdesign .sd-wt-head h2{font-family:var(--fdisp);font-size:clamp(1.65rem,1.3rem+1.5vw,2.35rem);font-weight:600;line-height:1.12;letter-spacing:-.018em;margin:0 0 .55rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-standfirst{margin:0 0 .65rem;font-size:1.125rem;line-height:1.6;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-lede{margin:0;font-size:var(--wt-small);line-height:1.6;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-step{padding:0 0 var(--wt-step)}.ve-embed-tpl-systemdesign .sd-wt-step+.sd-wt-step{border-top:1px solid var(--line);padding-top:var(--wt-step)}.ve-embed-tpl-systemdesign .sd-wt-step:last-child{padding-bottom:.5rem}.ve-embed-tpl-systemdesign .sd-wt-kick{margin:0 0 .45rem;font-size:var(--wt-micro);line-height:1.4;color:var(--muted);font-weight:500}.ve-embed-tpl-systemdesign .sd-wt-step h2{font-family:var(--fdisp);font-size:clamp(1.4rem,1.15rem+1vw,1.9rem);font-weight:600;line-height:1.16;letter-spacing:-.015em;margin:0 0 .85rem;color:var(--ink);scroll-margin-top:calc(var(--bandh, 118px) + 16px)}.ve-embed-tpl-systemdesign .sd-wt-step h3{font-family:var(--fdisp);font-size:var(--wt-small);font-weight:600;margin:0 0 .55rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-problem{color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-fig{margin:0 0 1.6rem;padding:0}.ve-embed-tpl-systemdesign .sd-wt-fig svg{width:min(100%,calc(var(--fig-w) * 1.25px));height:auto;display:block;margin-inline:auto;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px;box-sizing:border-box}.ve-embed-tpl-systemdesign .sd-wt-fig svg text{font-family:var(--fbody);user-select:none}.ve-embed-tpl-systemdesign .sd-wt-fig .node{cursor:default;pointer-events:none}.ve-embed-tpl-systemdesign .sd-wt-fig .edge{transition:none}.ve-embed-tpl-systemdesign .sd-wt-fig figcaption{margin:.65rem auto 0;max-width:min(100%,calc(var(--fig-w) * 1.25px));font-size:var(--wt-micro);line-height:1.5;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-fig figcaption b{color:var(--ink);font-weight:600}.ve-embed-tpl-systemdesign .sd-wt-pan{display:none}.ve-embed-tpl-systemdesign .sd-wt-decision{margin:0 0 1.7rem}.ve-embed-tpl-systemdesign .sd-wt-dq{margin:0 0 1rem;font-family:var(--fdisp);font-size:1.1rem;font-weight:600;line-height:1.35;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-opts{list-style:none;margin:0;padding:0}.ve-embed-tpl-systemdesign .sd-wt-opts li{position:relative;margin:0 0 1.05rem;padding-left:1.5rem}.ve-embed-tpl-systemdesign .sd-wt-opts li:last-child{margin-bottom:0}.ve-embed-tpl-systemdesign .sd-wt-opts li:before{content:"";position:absolute;left:0;top:.5em;width:.5rem;height:.5rem;border-radius:2px;border:1.5px solid var(--line2);box-sizing:border-box}.ve-embed-tpl-systemdesign .sd-wt-opts li.is-pick:before{background:var(--acid);border-color:var(--acid)}.ve-embed-tpl-systemdesign .sd-wt-opt{margin:0 0 .3rem;font-size:var(--wt-body);line-height:1.6;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-why{margin:0;font-size:var(--wt-small);line-height:1.62;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-verdict{font-weight:600;margin-right:.4rem}.ve-embed-tpl-systemdesign .is-pick .sd-wt-verdict{color:var(--acid-ink)}.ve-embed-tpl-systemdesign .is-alt .sd-wt-verdict,.ve-embed-tpl-systemdesign .is-alt .sd-wt-opt{color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-stats{list-style:none;display:flex;flex-wrap:wrap;gap:1rem 2.75rem;margin:0 0 1.7rem;padding:1rem 0 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-wt-stats li{display:flex;flex-direction:column;gap:.1rem}.ve-embed-tpl-systemdesign .sd-wt-stats b{font-family:var(--fdisp);font-size:1.3rem;font-weight:600;line-height:1.1;color:var(--ink);font-variant-numeric:tabular-nums}.ve-embed-tpl-systemdesign .sd-wt-stats span{font-family:var(--fmono);font-size:var(--wt-micro);color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-parts,.ve-embed-tpl-systemdesign .sd-wt-env{margin:0 0 1.7rem}.ve-embed-tpl-systemdesign .sd-wt-parts dl,.ve-embed-tpl-systemdesign .sd-wt-env dl{margin:0}.ve-embed-tpl-systemdesign .sd-wt-part,.ve-embed-tpl-systemdesign .sd-wt-erow{padding:.7rem 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-wt-part dt,.ve-embed-tpl-systemdesign .sd-wt-erow dt{margin:0 0 .2rem;font-size:var(--wt-small);font-weight:600;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-part dd,.ve-embed-tpl-systemdesign .sd-wt-erow dd{margin:0;font-size:var(--wt-small);line-height:1.6;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-erow dt{font-family:var(--fmono);font-weight:500;letter-spacing:0}.ve-embed-tpl-systemdesign .sd-wt-tag{margin-left:.55rem;font-family:var(--fmono);font-size:var(--wt-micro);font-weight:400;color:var(--dim);text-transform:lowercase}.ve-embed-tpl-systemdesign .sd-wt-concept{margin:0 0 1.7rem;padding:.15rem 0 .15rem 1.35rem;border-left:2px solid var(--acid);background:none;border-radius:0}.ve-embed-tpl-systemdesign .sd-wt-concept h3{margin:0 0 .3rem}.ve-embed-tpl-systemdesign .sd-wt-concept p{margin:0;font-size:var(--wt-body);line-height:1.68;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-chaos{margin:0 0 1.7rem;padding:1.1rem 1.3rem;border:1px solid color-mix(in srgb,var(--orange) 32%,var(--line));border-radius:12px;background:color-mix(in srgb,var(--orange) 4%,transparent)}.ve-embed-tpl-systemdesign .sd-wt-chaos h3{margin:0 0 .35rem}.ve-embed-tpl-systemdesign .sd-wt-incident{margin:0 0 .6rem;font-family:var(--fmono);font-size:var(--wt-micro);line-height:1.5;color:color-mix(in srgb,var(--orange) 72%,var(--ink))}.ve-embed-tpl-systemdesign .sd-wt-chaos>p:last-child{margin:0;font-size:var(--wt-small);line-height:1.68;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-recap{margin:1.5rem 0 0}.ve-embed-tpl-systemdesign .sd-wt-recap ul{margin:0;padding:0;list-style:none}.ve-embed-tpl-systemdesign .sd-wt-recap li{padding:.6rem 0;border-top:1px solid var(--line);font-size:var(--wt-small);line-height:1.6;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-recap li b{color:var(--ink);font-weight:600}.ve-embed-tpl-systemdesign .sd-wt-pokes,.ve-embed-tpl-systemdesign .sd-wt-check{max-width:var(--wt-measure,44rem);margin:0 auto;padding:0 24px;box-sizing:border-box}.ve-embed-tpl-systemdesign .sd-wt-pokes{padding-top:clamp(40px,5vw,60px);border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-wt-check{padding-top:clamp(40px,5vw,60px)}.ve-embed-tpl-systemdesign .sd-wt-pokes h2,.ve-embed-tpl-systemdesign .sd-wt-check h2{font-family:var(--fdisp);font-size:clamp(1.4rem,1.15rem+1vw,1.9rem);font-weight:600;line-height:1.16;letter-spacing:-.015em;margin:0 0 .55rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-pokes .sd-wt-lede,.ve-embed-tpl-systemdesign .sd-wt-check .sd-wt-lede{margin:0 0 1.9rem}.ve-embed-tpl-systemdesign .sd-wt-pokes.is-live .sd-wt-lede{margin-bottom:.7rem}.ve-embed-tpl-systemdesign .sd-wt-pall{margin:0 0 1.7rem}.ve-embed-tpl-systemdesign .sd-wt-reveal-all{font:inherit;font-size:var(--wt-small);font-weight:600;color:var(--ink);background:none;border:0;padding:.3rem 0;cursor:pointer;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.22em;text-decoration-color:var(--line2)}.ve-embed-tpl-systemdesign .sd-wt-reveal-all:hover{text-decoration-color:currentColor}.ve-embed-tpl-systemdesign .sd-wt-plist{list-style:none;margin:0;padding:0}.ve-embed-tpl-systemdesign .sd-wt-poke{display:grid;grid-template-columns:2.25rem minmax(0,1fr);padding:1.3rem 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-wt-poke>*{grid-column:2}.ve-embed-tpl-systemdesign .sd-wt-pn{grid-column:1;grid-row:1;font-family:var(--fmono);font-size:var(--wt-micro);line-height:1.65rem;color:var(--muted);letter-spacing:.02em}.ve-embed-tpl-systemdesign .sd-wt-pq{font-family:inherit;font-size:var(--wt-body);font-weight:600;line-height:1.55;margin:0;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-reveal{justify-self:start;display:inline-flex;align-items:center;gap:.5rem;margin:.4rem 0 0;padding:.3rem 0;font:inherit;font-size:var(--wt-small);font-weight:500;color:var(--muted);background:none;border:0;cursor:pointer}.ve-embed-tpl-systemdesign .sd-wt-reveal:after{content:"";width:.42em;height:.42em;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-.15em) rotate(45deg);transition:transform .15s ease}.ve-embed-tpl-systemdesign .sd-wt-reveal[aria-expanded=true]:after{transform:translateY(.1em) rotate(-135deg)}.ve-embed-tpl-systemdesign .sd-wt-reveal:hover{color:var(--ink)}@media(prefers-reduced-motion:reduce){.ve-embed-tpl-systemdesign .sd-wt-reveal:after{transition:none}}.ve-embed-tpl-systemdesign .sd-wt-reveal:focus-visible,.ve-embed-tpl-systemdesign .sd-wt-reveal-all:focus-visible{outline:2px solid var(--acid-ink);outline-offset:2px}.ve-embed-tpl-systemdesign .sd-wt-pa{margin:.7rem 0 0}.ve-embed-tpl-systemdesign .sd-wt-pokes.is-live .sd-wt-pa{display:none}.ve-embed-tpl-systemdesign .sd-wt-pokes.is-live .is-open .sd-wt-pa{display:block}.ve-embed-tpl-systemdesign .sd-wt-pa p{margin:0;font-size:var(--wt-body);line-height:1.72;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-qlist h3{font-family:var(--fdisp);font-size:1.0625rem;font-weight:600;line-height:1.4;margin:0 0 .5rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-qlist li>p:last-child{margin:0;font-size:var(--wt-small);line-height:1.7;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-qlist{list-style:none;margin:0;padding:0;counter-reset:q}.ve-embed-tpl-systemdesign .sd-wt-qlist li{counter-increment:q;padding:1.15rem 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-wt-qlist h3:before{content:counter(q) ". ";color:var(--muted);font-weight:400}.ve-embed-tpl-systemdesign .sd-wt-ans{margin:0 0 .45rem;font-size:var(--wt-small);line-height:1.6;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-ans b{font-weight:600}.ve-embed-tpl-systemdesign .lesson .sd-wt{max-width:none;margin:0;padding:0 0 8px}@media(min-width:941px){.ve-embed-tpl-systemdesign .sd-live .lesson .sd-wt-fig{display:none}}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-why,.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-verdict{display:none}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live li:before{background:transparent;border-color:var(--line2)}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .is-alt .sd-wt-opt{color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered .sd-wt-why,.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered .sd-wt-verdict{display:revert}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered .is-alt .sd-wt-opt{color:var(--muted)}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered li.is-pick:before{background:var(--acid);border-color:var(--acid)}.ve-embed-tpl-systemdesign .sd-wt-pick{display:block;width:100%;text-align:left;background:none;border:0;padding:0;margin:0;font:inherit;color:inherit;cursor:pointer;border-radius:4px}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-opts li{padding-left:0}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-opts li:before{display:none}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-pick{border:1px solid var(--line);padding:.65rem .85rem;transition:border-color .15s ease}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-pick:hover{border-color:var(--acid-ink)}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered .sd-wt-opts li{padding-left:1.5rem}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered .sd-wt-opts li:before{display:block}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered .sd-wt-pick{border-color:transparent;padding:0}.ve-embed-tpl-systemdesign .sd-wt-decision.is-answered li.is-chosen .sd-wt-pick{border-color:transparent}.ve-embed-tpl-systemdesign .sd-wt-decision.is-live .sd-wt-pick:hover .sd-wt-opt{color:var(--acid-ink)}.ve-embed-tpl-systemdesign .sd-wt-pick:focus-visible{outline:2px solid var(--acid-ink);outline-offset:3px}.ve-embed-tpl-systemdesign .sd-wt-pick[disabled]{cursor:default}.ve-embed-tpl-systemdesign .sd-wt-opts li.is-chosen:before{box-shadow:0 0 0 3px color-mix(in srgb,var(--acid) 22%,transparent)}.ve-embed-tpl-systemdesign .sd-wt-qopts{list-style:none;margin:0 0 .7rem;padding:0;display:flex;flex-direction:column;gap:.4rem}.ve-embed-tpl-systemdesign .sd-wt-qopts>li{font-size:var(--wt-small);line-height:1.5;color:var(--ink);padding:.55rem .75rem;border:1px solid var(--line);border-radius:4px}.ve-embed-tpl-systemdesign .sd-wt-qlist:not(.is-live) .sd-wt-qopts>li.is-pick{border-color:var(--acid);font-weight:600}.ve-embed-tpl-systemdesign .sd-wt-qlist.is-live .sd-wt-qopts>li{cursor:pointer;transition:border-color .15s ease,color .15s ease}.ve-embed-tpl-systemdesign .sd-wt-qlist.is-live .sd-wt-qopts>li:hover{border-color:var(--acid-ink)}.ve-embed-tpl-systemdesign .sd-wt-qlist.is-live .sd-wt-qopts>li:focus-visible{outline:2px solid var(--acid-ink);outline-offset:2px}.ve-embed-tpl-systemdesign .sd-wt-qlist.is-live .sd-wt-why{display:none}.ve-embed-tpl-systemdesign .sd-wt-qlist li.is-answered .sd-wt-why{display:block}.ve-embed-tpl-systemdesign .sd-wt-qlist li.is-answered .sd-wt-qopts>li{cursor:default}.ve-embed-tpl-systemdesign .sd-wt-qlist li.is-answered .sd-wt-qopts>li.is-pick{border-color:var(--acid);font-weight:600}.ve-embed-tpl-systemdesign .sd-wt-qlist li.is-answered .sd-wt-qopts>li.is-chosen:not(.is-pick){border-color:var(--orange);color:var(--muted);text-decoration:line-through}.ve-embed-tpl-systemdesign .sd-wt-score{margin:1.6rem 0 0;padding:1.2rem 0 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-wt-score-line{margin:0 0 .9rem;font-size:var(--wt-body);color:var(--ink)}.ve-embed-tpl-systemdesign .sd-wt-score-line b{font-family:var(--fdisp);font-size:1.25rem}.ve-embed-tpl-systemdesign .sd-wt-score-actions{margin:0 0 1rem}@media(max-width:620px){.ve-embed-tpl-systemdesign .lesson .sd-wt{padding:0}.ve-embed-tpl-systemdesign .sd-wt,.ve-embed-tpl-systemdesign .sd-wt-pokes,.ve-embed-tpl-systemdesign .sd-wt-check{padding-left:18px;padding-right:18px}.ve-embed-tpl-systemdesign .sd-wt-fig{margin-left:-18px;margin-right:-18px}.ve-embed-tpl-systemdesign .sd-wt-fig svg{border-radius:0;border-left:0;border-right:0}.ve-embed-tpl-systemdesign .sd-wt-fig figcaption{padding:0 18px}.ve-embed-tpl-systemdesign .sd-wt-fig.is-wide{overflow-x:auto;overscroll-behavior-x:contain}.ve-embed-tpl-systemdesign .sd-wt-fig.is-wide svg{min-width:calc(var(--fig-w) * .9px);max-width:none}.ve-embed-tpl-systemdesign .sd-wt-pan{display:inline;color:var(--acid-ink)}.ve-embed-tpl-systemdesign .sd-wt-stats{gap:1rem 2rem}}.ve-embed-tpl-systemdesign .sd-interview{--wt-small:.9375rem;--wt-micro:.8125rem;max-width:44rem;margin:0 auto;padding:clamp(40px,5vw,60px) 24px 0;box-sizing:border-box;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-interview h2{font-family:var(--fdisp);font-size:clamp(1.4rem,1.15rem+1vw,1.9rem);font-weight:600;line-height:1.16;letter-spacing:-.015em;margin:0 0 .55rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-interview .iv-lede{font-size:var(--wt-small);line-height:1.7;color:var(--muted);margin:0 0 2rem}.ve-embed-tpl-systemdesign .iv-h{font-family:var(--fdisp);font-size:1.0625rem;font-weight:600;line-height:1.4;margin:0;color:var(--ink)}.ve-embed-tpl-systemdesign .iv-sub{font-size:var(--wt-micro);line-height:1.6;color:var(--muted);margin:.2rem 0 .9rem}.ve-embed-tpl-systemdesign .iv-sec{padding:1.4rem 0 0;margin:1.4rem 0 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .iv-sec:first-of-type{padding-top:0;margin-top:0;border-top:0}.ve-embed-tpl-systemdesign .iv-fr{margin:0;padding:0;list-style:none}.ve-embed-tpl-systemdesign .iv-fr li{position:relative;padding:0 0 0 1.1rem;margin:0 0 .5rem;font-size:var(--wt-small);line-height:1.65;color:var(--ink)}.ve-embed-tpl-systemdesign .iv-fr li:before{content:"";position:absolute;left:0;top:.62em;width:4px;height:4px;border-radius:50%;background:var(--acid-ink)}.ve-embed-tpl-systemdesign .iv-nfr{margin:0}.ve-embed-tpl-systemdesign .iv-row{padding:.75rem 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .iv-row:first-child{border-top:0;padding-top:0}.ve-embed-tpl-systemdesign .iv-row dt{font-weight:600;font-size:var(--wt-small);color:var(--ink);margin:0 0 .15rem}.ve-embed-tpl-systemdesign .iv-row dd{margin:0;font-size:var(--wt-small);line-height:1.65;color:var(--muted)}.ve-embed-tpl-systemdesign .iv-step{font-family:var(--fmono);font-size:var(--wt-micro);letter-spacing:.02em;color:var(--ink);background:color-mix(in srgb,var(--ink) 8%,transparent);border:none;border-radius:4px;padding:2px 7px;margin-left:.35rem;cursor:pointer;white-space:nowrap}.ve-embed-tpl-systemdesign .iv-step:hover{background:color-mix(in srgb,var(--ink) 16%,transparent)}.ve-embed-tpl-systemdesign .iv-step:focus-visible{outline:2px solid var(--acid-ink);outline-offset:2px}.ve-embed-tpl-systemdesign .iv-trade{padding:.85rem 0;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .iv-trade:first-child{border-top:0;padding-top:0}.ve-embed-tpl-systemdesign .iv-choice{margin:0 0 .2rem;font-size:var(--wt-small);line-height:1.5}.ve-embed-tpl-systemdesign .iv-pick{font-weight:600;color:var(--ink)}.ve-embed-tpl-systemdesign .iv-over{font-family:var(--fmono);font-size:var(--wt-micro);color:var(--muted);letter-spacing:.02em}.ve-embed-tpl-systemdesign .iv-why{margin:0;font-size:var(--wt-small);line-height:1.65;color:var(--muted)}@media(max-width:620px){.ve-embed-tpl-systemdesign .sd-interview{padding-left:18px;padding-right:18px}}.ve-embed-tpl-systemdesign .sd-sum{--wt-small:.9375rem;--wt-micro:.8125rem;max-width:44rem;margin:0 auto;padding:clamp(40px,5vw,60px) 24px 0;box-sizing:border-box;border-top:1px solid var(--line)}.ve-embed-tpl-systemdesign .sd-sum h2{font-family:var(--fdisp);font-size:clamp(1.4rem,1.15rem+1vw,1.9rem);font-weight:600;line-height:1.16;letter-spacing:-.015em;margin:0 0 .55rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-sum-teaches{font-size:var(--wt-small);line-height:1.7;color:var(--muted);margin:0}.ve-embed-tpl-systemdesign .sd-sum-h{font-family:var(--fdisp);font-size:1.0625rem;font-weight:600;line-height:1.4;margin:1.6rem 0 .6rem;color:var(--ink)}.ve-embed-tpl-systemdesign .sd-sum-list{margin:0;padding:0;list-style:none}.ve-embed-tpl-systemdesign .sd-sum-list li{padding:.6rem 0;border-top:1px solid var(--line);font-size:var(--wt-small);line-height:1.65;color:var(--muted)}.ve-embed-tpl-systemdesign .sd-sum-list li b{color:var(--ink);font-weight:600}.ve-embed-tpl-systemdesign .sd-sum-steps{margin:0;padding:0;list-style:none;columns:2;column-gap:2rem}.ve-embed-tpl-systemdesign .sd-sum-steps li{margin:0 0 .35rem;line-height:1.55;font-size:var(--wt-micro);color:var(--muted);break-inside:avoid}.ve-embed-tpl-systemdesign .sd-sum code{font-family:var(--fmono);background:color-mix(in srgb,var(--ink) 8%,transparent);color:var(--ink);padding:1px 5px;border-radius:4px;font-size:.92em}@media(max-width:620px){.ve-embed-tpl-systemdesign .sd-sum{padding-left:18px;padding-right:18px}.ve-embed-tpl-systemdesign .sd-sum-steps{columns:1}}
