/* How-it-works walkthrough (from flow-graphics prototype), scoped under .hiw */
.hiw{--dark:#0d0d0d;--rowh:58px}
.hiw .intro{max-width:1280px;margin:0 auto;padding:104px 60px 96px}
.hiw .eb{font:600 11px/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--slate)}
.hiw .intro h2{font-family:var(--display);font-weight:400;font-size:clamp(32px,3.8vw,50px);line-height:1.08;letter-spacing:-0.8px;max-width:24ch;margin:16px 0 18px}
.hiw .intro p{font-size:17px;line-height:1.6;color:var(--graphite);max-width:62ch}
.hiw .pinwrap{height:450vh;position:relative}
.hiw .stage{position:sticky;top:0;height:100vh;overflow:hidden;background:var(--dark);transition:background .7s ease;display:grid;grid-template-columns:minmax(360px,42fr) 58fr;align-items:stretch}
.hiw .stage::before{content:"";position:absolute;inset:0;background:radial-gradient(720px 560px at 68% 50%,#1a1a1a 0%,rgba(13,13,13,0) 70%);opacity:1;transition:opacity .7s ease;pointer-events:none}
.hiw .stage.lit{background:#fff}
.hiw .stage.lit::before{opacity:0}
.hiw .act{position:absolute;left:60px;bottom:26px;z-index:4;font:700 12px/1 var(--mono);letter-spacing:.22em;text-transform:uppercase;color:rgba(255,255,255,.42);transition:color .7s ease;display:flex;gap:14px;align-items:baseline}
.hiw .stage.lit .act{color:var(--stone)}
.hiw .act span{transition:opacity .5s ease}
.hiw .act .a2{opacity:.35}
.hiw .stage.lit .act .a1{opacity:.35}
.hiw .stage.lit .act .a2{opacity:1}
.hiw .wm{position:absolute;right:44px;top:30px;z-index:1;pointer-events:none;font-family:var(--display);font-style:italic;font-weight:300;font-size:clamp(64px,8.5vw,124px);line-height:1;letter-spacing:-2px;white-space:nowrap}
.hiw .wm span{position:absolute;right:0;top:0;transition:opacity .8s ease}
.hiw .wm .w1{color:rgba(255,255,255,.16)}
.hiw .wm .w2{color:rgba(13,13,13,.13);opacity:0}
.hiw .stage.lit .wm .w1{opacity:0}
.hiw .stage.lit .wm .w2{opacity:1}
.hiw .rail{padding:0 20px 0 60px;display:flex;flex-direction:column;justify-content:center;position:relative;z-index:3}
.hiw .rail .eb{margin-bottom:26px;transition:color .7s ease}
.hiw .stage:not(.lit) .rail .eb{color:rgba(255,255,255,.55)}
.hiw .dial{height:calc(var(--rowh) * 3);overflow:hidden;-webkit-mask-image:linear-gradient(180deg,transparent,#000 22%,#000 78%,transparent);mask-image:linear-gradient(180deg,transparent,#000 22%,#000 78%,transparent);margin-bottom:26px}
.hiw .dial ul{list-style:none;margin:0;padding:calc(var(--rowh)) 0 0;transition:transform .55s cubic-bezier(.3,.7,.2,1)}
.hiw .dial li{height:var(--rowh);display:flex;align-items:center;gap:16px;font-family:var(--display);font-size:clamp(21px,1.9vw,27px);letter-spacing:-0.4px;color:rgba(255,255,255,.34);transition:color .5s ease}
.hiw .stage.lit .dial li{color:var(--ash)}
.hiw .dial li .n{font:600 11px/1 var(--mono);letter-spacing:.08em;color:inherit;opacity:.8;width:26px;flex:none}
.hiw .dial li.on{color:#fff}
.hiw .stage.lit .dial li.on{color:var(--ink)}
.hiw .copy{position:relative;min-height:190px;max-width:44ch}
.hiw .copy p{position:absolute;inset:0;font-size:16.5px;line-height:1.62;color:rgba(255,255,255,.78);opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease;pointer-events:none}
.hiw .stage.lit .copy p{color:var(--graphite)}
.hiw .copy p b{color:#fff}
.hiw .stage.lit .copy p b{color:var(--ink)}
.hiw .copy p.on{opacity:1;transform:none}
.hiw .dia-col{position:relative;z-index:2;display:flex;align-items:center;justify-content:center;padding:0 24px}
.hiw .dia-fit{flex:none;position:relative}
.hiw .dia{position:absolute;left:50%;top:50%;width:760px;height:600px;transform-origin:center}
.hiw .dia svg.w,.hiw .dia svg.compass{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.hiw .cg{transform-origin:315.4px 246.4px;animation:hiwWob 8s ease-in-out infinite}
.hiw .st1 .cg,.hiw .st2 .cg,.hiw .st3 .cg{animation:hiwSettle .9s cubic-bezier(.25,1.3,.4,1) forwards}
@keyframes hiwWob{0%{transform:rotate(-22deg)}35%{transform:rotate(14deg)}65%{transform:rotate(-9deg)}100%{transform:rotate(-22deg)}}
@keyframes hiwSettle{0%{transform:rotate(14deg)}55%{transform:rotate(-3deg)}80%{transform:rotate(1.2deg)}100%{transform:rotate(0deg)}}
.hiw .co{fill:none;stroke:rgba(255,255,255,.09);transition:stroke .7s ease}
.hiw .ct{fill:none;stroke:rgba(255,255,255,.16);transition:stroke .7s ease}
.hiw .cs,.hiw .cs2{fill:rgba(255,255,255,.045);stroke:rgba(255,255,255,.10);stroke-width:1;transition:fill .7s ease,stroke .7s ease}
.hiw .cn{fill:rgba(255,255,255,.16);transition:fill .7s ease}
.hiw .lit .co{stroke:rgba(13,13,13,.07)}
.hiw .lit .ct{stroke:rgba(13,13,13,.14)}
.hiw .lit .cs,.hiw .lit .cs2{fill:rgba(13,13,13,.035);stroke:rgba(13,13,13,.09)}
.hiw .lit .cn{fill:rgba(13,13,13,.15)}
.hiw .nd{position:absolute;transform:translate(-50%,-50%);white-space:nowrap}
.hiw .nd-sys{z-index:2;display:flex;align-items:center;gap:9px;background:#141414;border:1px solid rgba(255,255,255,.38);padding:11px 16px;font:600 13px/1.2 var(--mono);letter-spacing:.03em;color:#fff;transition:background .5s ease,border-color .5s ease,color .5s ease,opacity .5s ease,box-shadow .5s ease;transition-delay:calc(var(--i,0)*55ms)}
.hiw .nd-sys .ic{width:15px;height:15px;flex:none;stroke:currentColor;fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;opacity:.9}
.hiw .lit .nd-sys{background:#fff;border-color:var(--ink);color:var(--ink);box-shadow:3px 3px 0 rgba(13,13,13,.08)}
.hiw .nd-sys.wide{white-space:normal;max-width:232px;text-align:left;line-height:1.35}
.hiw .hub{z-index:3;text-align:center;padding:17px 26px;font:700 17px/1.2 var(--sans);letter-spacing:-0.2px;transition:opacity .6s ease}
.hiw .hub small{display:block;font:400 10px/1.3 var(--mono);letter-spacing:.07em;text-transform:uppercase;margin-top:5px;opacity:.72}
.hiw .hub-people{background:#fff;color:var(--ink);box-shadow:0 0 0 6px rgba(255,255,255,.12)}
.hiw .hub-sail{background:linear-gradient(160deg,#2e2e2e,#0d0d0d 62%);color:#fff;opacity:0;box-shadow:7px 7px 0 rgba(13,13,13,.12),inset 0 1px 0 rgba(255,255,255,.22);padding:19px 28px 15px}
.hiw .hub-sail .srow{display:flex;align-items:center;justify-content:center}
.hiw .hub-sail .boat{width:38px;height:38px;flex:none}
.hiw .hub-sail small{white-space:normal;max-width:216px;margin:9px auto 0;opacity:.85}
.hiw .hub-sail .tline{display:block;margin-top:9px;padding-top:8px;border-top:1px solid rgba(255,255,255,.25);font:500 10px/1.4 var(--mono);letter-spacing:.03em;color:rgba(255,255,255,.85);text-align:left;min-width:168px}
.hiw .cur{display:inline-block;width:6px;height:10px;background:#fff;margin-left:5px;vertical-align:-1px;animation:hiwBlink 1.1s steps(1) infinite}
@keyframes hiwBlink{50%{opacity:0}}
@keyframes hiwHubpulse{0%{box-shadow:7px 7px 0 rgba(13,13,13,.12),inset 0 1px 0 rgba(255,255,255,.22),0 0 0 0 rgba(13,13,13,.28)}100%{box-shadow:7px 7px 0 rgba(13,13,13,.12),inset 0 1px 0 rgba(255,255,255,.22),0 0 0 22px rgba(13,13,13,0)}}
.hiw .st1 .hub-people,.hiw .st2 .hub-people,.hiw .st3 .hub-people{opacity:0}
.hiw .st1 .hub-sail,.hiw .st2 .hub-sail,.hiw .st3 .hub-sail{opacity:1;animation:hiwHubpulse 2.6s ease-out infinite .4s}
.hiw svg.w line{transition:opacity .6s ease}
.hiw svg.w .lt{stroke:rgba(255,255,255,.5);stroke-width:1.2;stroke-dasharray:4 5}
.hiw svg.w .ls{stroke:var(--ink);stroke-width:1.2;opacity:0}
.hiw svg.w .ah{fill:var(--ink);opacity:0;transition:opacity .6s ease}
.hiw .st1 svg.w .lt,.hiw .st2 svg.w .lt,.hiw .st3 svg.w .lt{opacity:0}
.hiw .st1 svg.w .ls,.hiw .st2 svg.w .ls,.hiw .st3 svg.w .ls{opacity:1}
.hiw .st1 svg.w .ah,.hiw .st2 svg.w .ah,.hiw .st3 svg.w .ah{opacity:1}
.hiw .st2 svg.w .ls,.hiw .st3 svg.w .ls{stroke-dasharray:5 7;animation:hiwMarch 1.4s linear infinite}
@keyframes hiwMarch{to{stroke-dashoffset:-24}}
.hiw .pill{z-index:2;position:absolute;transform:translate(-50%,-50%) scale(.8);background:var(--dark);border:1px solid rgba(255,255,255,.3);padding:2px 8px;font:500 9.5px/1.5 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:rgba(255,255,255,.8);opacity:0;transition:opacity .5s ease,transform .5s cubic-bezier(.34,1.56,.64,1);transition-delay:calc(var(--i,0)*55ms + .1s);white-space:nowrap}
.hiw .pill.mach{background:var(--ink);border-color:var(--ink);color:#fff;font:700 10.5px/1.5 var(--mono);letter-spacing:.09em;padding:3px 9px;box-shadow:3px 3px 0 rgba(13,13,13,.14)}
.hiw .pill .pic{width:11px;height:11px;vertical-align:-1.5px;margin-right:5px}
.hiw .st0 .pill.human,.hiw .st1 .pill.mach,.hiw .st2 .pill.mach,.hiw .st3 .pill.mach{opacity:1;transform:translate(-50%,-50%) scale(1)}
.hiw .st1 .nd[data-chat],.hiw .st2 .nd[data-chat],.hiw .st3 .nd[data-chat]{opacity:0}
.hiw .st1 svg.w .chat,.hiw .st2 svg.w .chat,.hiw .st3 svg.w .chat{opacity:0 !important}
.hiw .st1 .pill[data-chat],.hiw .st2 .pill[data-chat],.hiw .st3 .pill[data-chat]{opacity:0}
.hiw .aibox{position:absolute;left:41.5%;top:63.5%;transform:translate(-50%,-50%);background:#fff;color:var(--ink);border:2px solid var(--ink);padding:10px 18px;text-align:center;font:700 14px/1.25 var(--sans);opacity:0;transition:opacity .6s ease .25s;z-index:3;box-shadow:4px 4px 0 rgba(13,13,13,.12);white-space:nowrap}
.hiw .aibox small{display:block;font:400 9.5px/1.4 var(--mono);letter-spacing:.07em;text-transform:uppercase;color:var(--slate);margin-top:4px}
.hiw .st2 .aibox,.hiw .st3 .aibox{opacity:1}
.hiw .perim{position:absolute;inset:-2% 0.8% 17.5% -0.3%;border:2px solid var(--ink);opacity:0;transition:opacity .7s ease;pointer-events:none}
.hiw .perim i{position:absolute;width:13px;height:13px;border:0 solid var(--ink)}
.hiw .perim .c1{left:-3px;top:-3px;border-left-width:3px;border-top-width:3px}
.hiw .perim .c2{right:-3px;top:-3px;border-right-width:3px;border-top-width:3px}
.hiw .perim .c3{left:-3px;bottom:-3px;border-left-width:3px;border-bottom-width:3px}
.hiw .perim .c4{right:-3px;bottom:-3px;border-right-width:3px;border-bottom-width:3px}
.hiw .perim .pl{position:absolute;top:-9px;left:16px;background:#fff;padding:0 8px;font:700 11px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink)}
.hiw .st2 .perim,.hiw .st3 .perim{opacity:1}
.hiw .fgate{position:absolute;left:41.5%;top:82.5%;transform:translate(-50%,-50%);z-index:4;background:var(--ink);color:#fff;font:700 9px/1.3 var(--mono);letter-spacing:.09em;text-transform:uppercase;padding:8px 14px;text-align:center;opacity:0;transition:opacity .5s ease;white-space:nowrap}
.hiw .fgate span{font-weight:400;letter-spacing:.05em;color:rgba(255,255,255,.72);margin-left:6px}
.hiw .frontier{position:absolute;left:41.5%;top:94%;transform:translate(-50%,-50%);width:max-content;z-index:2;border:1px dashed var(--stone);color:var(--ink-soft);padding:9px 14px;font:600 11px/1.3 var(--mono);text-align:center;opacity:0;transition:opacity .5s ease .1s;background:#fff}
.hiw .frontier small{display:block;font:400 8.5px/1.4 var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--slate);margin-top:3px}
.hiw .frontier .cxo,.hiw .frontier .cxr{position:absolute;bottom:100%;margin-bottom:2px;height:24px;display:block}
.hiw .frontier .cxo{left:calc(50% - 15px)}.hiw .frontier .cxr{left:calc(50% + 15px)}
.hiw .cxo .ln,.hiw .cxr .ln{display:block;border-left:1px solid var(--ink);height:100%;position:relative}
.hiw .cxo .ln::after{content:"";position:absolute;bottom:-1px;left:-4.5px;border:4px solid transparent;border-top-color:var(--ink)}
.hiw .cxr .ln::after{content:"";position:absolute;top:-1px;left:-4.5px;border:4px solid transparent;border-bottom-color:var(--ink)}
.hiw .frontier .cxcap{position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);width:max-content;display:block;font:500 8.5px/1.6 var(--mono);letter-spacing:.05em;text-transform:uppercase;color:var(--slate);text-align:left}
.hiw .fcap{position:absolute;right:calc(100% + 16px);top:50%;transform:translateY(-50%);width:150px;font:500 9.5px/1.5 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--slate);text-align:right;white-space:normal;opacity:0;transition:opacity .5s ease .25s}
.hiw .st3 .fcap{opacity:1}
.hiw .st3 .fgate,.hiw .st3 .frontier{opacity:1}
.hiw .entry{position:absolute;left:41.5%;top:1%;transform:translate(-50%,-100%);font:700 13px/1.3 var(--mono);letter-spacing:.09em;text-transform:uppercase;color:rgba(255,255,255,.8);transition:color .7s ease,opacity .6s ease}
.hiw .lit .entry{color:var(--ink-soft)}
.hiw .st3 .entry{opacity:0}
.hiw .payoff{background:var(--dark);color:#fff}
.hiw .payoff a{color:#fff}
.hiw .payoff .pin2{max-width:1280px;margin:0 auto;padding:120px 60px 110px}
.hiw .peb{font:600 11px/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.hiw .payoff h2{font-family:var(--display);font-weight:400;font-size:clamp(34px,4.2vw,56px);line-height:1.06;letter-spacing:-1px;max-width:21ch;margin:18px 0 20px}
.hiw .plede{font-size:17px;line-height:1.6;color:rgba(255,255,255,.72);max-width:58ch}
.hiw .pgrid{display:block;border-top:none;margin-top:64px}
.hiw .pb{padding:22px 0 16px;border-top:1px solid rgba(255,255,255,.16)}
.hiw .pb:first-child{border-top:none;padding-top:0}
.hiw .pb+.pb{padding-left:0;border-left:none}
.hiw .pb h3{font-family:var(--display);font-weight:500;font-size:23px;letter-spacing:-0.3px;margin:0 0 12px}
.hiw .pb p{font-size:14.5px;line-height:1.65;color:rgba(255,255,255,.68)}
.hiw .demo{opacity:0;transform:translateY(14px);transition:opacity .7s ease .15s,transform .7s ease .15s;display:grid;grid-template-columns:minmax(0,1.55fr) 1fr;gap:0 56px;align-items:start}
.hiw .payoff.go .demo{opacity:1;transform:none}
.hiw .dwin{background:#fff;color:var(--ink);max-width:780px;margin-top:64px;box-shadow:10px 10px 0 rgba(255,255,255,.07)}
.hiw .btop{display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--hairline);padding:10px 16px}
.hiw .bdots{display:flex;gap:6px;flex:none}
.hiw .bdots i{width:10px;height:10px;border-radius:50%;background:#e8e8e6;border:1px solid #d2d2d0}
.hiw .btitle{flex:1;display:flex;align-items:center;gap:8px;font:600 10px/1.2 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--graphite);white-space:nowrap;overflow:hidden}
.hiw .btitle svg{width:13px;height:13px;flex:none}
.hiw .dreplay{flex:none;border:1px solid var(--hairline);background:none;font:600 9px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--slate);padding:6px 8px;cursor:pointer}
.hiw .dreplay:hover{color:var(--ink);border-color:var(--ink)}
.hiw .chat{height:310px;overflow-y:auto;padding:22px 20px;display:flex;flex-direction:column;gap:16px;scrollbar-width:none}
.hiw .chat::-webkit-scrollbar{display:none}
.hiw .msg{display:flex;gap:12px;max-width:85%}
.hiw .msg.mu{align-self:flex-end;background:#f2f2f0;border:1px solid var(--hairline);padding:10px 14px;font:500 12.5px/1.6 var(--mono);color:var(--ink)}
.hiw .msg.ma{align-self:flex-start}
.hiw .mav{flex:none;width:26px;height:26px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;margin-top:2px}
.hiw .mav svg{width:17px;height:17px}
.hiw .mbody{display:flex;flex-direction:column;gap:10px}
.hiw .mbody p{font-size:14px;line-height:1.65;color:var(--ink-soft)}
.hiw .mbody p b{color:var(--ink)}
.hiw .typing::after{content:"";display:inline-block;width:6px;height:11px;background:var(--ink);margin-left:2px;vertical-align:-1px;animation:hiwBlink 1s steps(1) infinite}
.hiw .dfile{display:inline-block;margin-top:2px;border:1px solid var(--ink);padding:8px 13px;font:600 12px/1.4 var(--mono);color:var(--ink);transition:opacity .4s ease,transform .4s ease}
.hiw .dfile.hide{opacity:0;transform:scale(.92)}
.hiw .dfile em{font-style:normal;font-weight:400;color:var(--slate);margin-left:12px}
.hiw .cin{display:flex;align-items:center;gap:12px;border-top:1px solid var(--hairline);padding:13px 16px}
.hiw .ctxt{flex:1;min-height:20px;font:500 13px/1.5 var(--mono);color:var(--ink);white-space:normal}
.hiw .ctxt:empty::before{content:"Message SAIL\2026";color:var(--stone)}
.hiw .csend{flex:none;width:26px;height:26px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font:700 13px/1 var(--mono)}
@media (max-height:620px) and (min-width:761px){.hiw .copy p{font-size:14px;line-height:1.55}}
@media (max-width:760px),(prefers-reduced-motion:reduce){
  .hiw .intro{padding:64px 24px 48px}
  .hiw .pinwrap{height:auto}
  .hiw .stage{position:static;height:auto;grid-template-columns:1fr;padding:48px 24px 64px}
  .hiw .dial{height:auto;-webkit-mask-image:none;mask-image:none}
  .hiw .dial ul{padding:0;transform:none !important}
  .hiw .dial li{height:auto;padding:10px 0;font-size:21px}
  .hiw .copy{min-height:0;max-width:none;margin-top:8px}
  .hiw .copy p{position:static;opacity:1;transform:none;margin-bottom:14px}
  .hiw .dia-col{padding:32px 0 0;flex-direction:column}
  .hiw .act{position:static;margin-top:28px}
  .hiw .wm{display:none}
  .hiw .rail{padding:0}
  .hiw .payoff .pin2{padding:80px 24px}
  .hiw .pgrid{grid-template-columns:1fr}
  .hiw .demo{grid-template-columns:1fr}
  .hiw .pb{padding:24px 0 6px}
  .hiw .pb+.pb{padding-left:0;border-left:none;border-top:1px solid rgba(255,255,255,.16)}
  .hiw .chat{height:260px;padding:16px 14px}
  .hiw .dwin{margin-top:44px}
}