@font-face{font-family:"Manrope";font-weight:400;font-display:swap;src:url("../fonts/manrope-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Manrope";font-weight:500;font-display:swap;src:url("../fonts/manrope-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Manrope";font-weight:600;font-display:swap;src:url("../fonts/manrope-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Manrope";font-weight:700;font-display:swap;src:url("../fonts/manrope-latin-700-normal.woff2") format("woff2")}
@font-face{font-family:"Manrope";font-weight:800;font-display:swap;src:url("../fonts/manrope-latin-800-normal.woff2") format("woff2")}

:root{
  --bg:#FBFCFD; --card:#FFFFFF; --ink:#12161C; --ink-2:#3B4250; --mute:#6A7280; --faint:#9AA3B2;
  --rule:#E6EAF0; --rule-2:#D4DAE3;
  --acc:#1F4E9C; --acc-2:#153A78; --acc-soft:#EAF0FA; --acc-line:#B9CBEA;
  --valid:#2F8F62; --invalid:#C4473F; --catch:#C7871F; --risky:#5B6B95;
  --sans:"Manrope",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --page:1320px; --gutter:clamp(18px,3.2vw,44px); --r:16px;
  --sh:0 1px 2px rgba(18,22,28,.04),0 12px 32px -18px rgba(18,22,28,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--page);margin:0 auto;padding:0 var(--gutter)}
h1,h2,h3{letter-spacing:-.025em}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;height:46px;padding:0 20px;border-radius:11px;font-weight:700;font-size:14.5px;border:1px solid transparent;transition:border-radius .35s cubic-bezier(.22,1,.36,1),background-position .45s cubic-bezier(.22,1,.36,1),border-color .25s,color .25s,box-shadow .35s,transform .25s}
.btn:hover{border-radius:23px}
.btn:active{transform:scale(.985)}
.btn-fill{color:#fff;background:linear-gradient(135deg,var(--acc) 0%,var(--acc) 50%,var(--acc-2) 100%);background-size:220% 100%;background-position:0 0;box-shadow:0 8px 20px -10px rgba(31,78,156,.7)}
.btn-fill:hover{background-position:100% 0;box-shadow:0 12px 26px -12px rgba(31,78,156,.85)}
.btn-light{background:var(--card);color:var(--ink);border-color:var(--rule-2)}
.btn-light:hover{border-color:var(--acc);color:var(--acc)}
.link{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:14.5px;color:var(--acc)}
.link svg{width:15px;height:15px;transition:transform .2s}
.link:hover svg{transform:translateX(3px)}

/* header */
header{position:sticky;top:0;z-index:20;background:rgba(251,252,253,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--rule)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.02em}
.brand .mark{position:relative;width:32px;height:32px;border-radius:10px;background:linear-gradient(145deg,#2F63B8 0%,var(--acc) 55%,#153A78 100%);display:grid;place-items:center;box-shadow:0 8px 18px -10px rgba(31,78,156,.9),inset 0 1px 0 rgba(255,255,255,.28)}
.brand .mark svg{width:17px;height:17px;stroke:#fff;position:relative;z-index:1}
.brand .mark i{position:absolute;right:-3px;top:-3px;width:9px;height:9px;border-radius:50%;background:var(--valid);border:2px solid var(--bg)}
.brand .word{line-height:1}
.brand .word b{font-weight:800;color:var(--acc)}
footer .brand .mark i{border-color:#fff}
.nav-links{display:flex;gap:26px}
.nav-links a{position:relative;display:inline-block;overflow:hidden;font-size:14px;font-weight:600;color:var(--ink-2);line-height:1.4}
.nav-links a span{display:inline-block;transition:transform .32s cubic-bezier(.65,0,.35,1)}
.nav-links a::after{content:attr(data-t);position:absolute;left:0;top:100%;color:var(--acc);font-weight:700;transition:transform .32s cubic-bezier(.65,0,.35,1)}
.nav-links a:hover span,.nav-links a:focus-visible span{transform:translateY(-100%)}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:translateY(-100%)}
.nav .btn{height:40px;padding:0 16px;font-size:14px}
.nav-right{display:flex;align-items:center;gap:12px}
.menu{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--rule-2);background:#fff;cursor:pointer;position:relative}
.menu i{position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--ink);top:15px;transition:transform .25s,top .25s}
.menu i+i{top:23px}
.menu.open i{top:19px;transform:rotate(45deg)}.menu.open i+i{transform:rotate(-45deg)}
.drawer{border-top:1px solid var(--rule);background:#fff}
.drawer nav{display:grid;padding:8px var(--gutter) 14px}
.drawer a{padding:12px 4px;font-weight:700;font-size:15px;border-bottom:1px solid var(--rule)}
.drawer a:last-child{border-bottom:0}

/* hero */
.hero{padding:64px 0 40px;text-align:center;position:relative}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 50% 0%,rgba(31,78,156,.10),transparent 70%);pointer-events:none}
.hero .wrap{position:relative}
.hero h1{font-size:clamp(34px,4.6vw,58px);line-height:1.06;font-weight:800;margin:0 auto;white-space:nowrap}
.hero h1 span{color:var(--acc)}
.hero .sub{max-width:58ch;margin:20px auto 0;font-size:17.5px;line-height:1.6;color:var(--ink-2)}
.hero .acts{display:flex;justify-content:center;align-items:center;gap:22px;margin-top:30px;flex-wrap:wrap}
.hero .acts .btn{height:48px;padding:0 22px;font-size:15px}

/* sorting stage: full width */
.stage{position:relative;margin-top:44px;height:300px;border-radius:22px;background:linear-gradient(180deg,#FFFFFF,#F4F7FB);border:1px solid var(--rule);box-shadow:var(--sh);overflow:hidden;text-align:left}
.stage .grid{position:absolute;inset:0;background-image:linear-gradient(var(--rule) 1px,transparent 1px),linear-gradient(90deg,var(--rule) 1px,transparent 1px);background-size:40px 40px;opacity:.45;mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.source{position:absolute;left:28px;top:28px;bottom:28px;width:23%;border-radius:14px;background:#fff;border:1px solid var(--rule);box-shadow:var(--sh);padding:14px 14px 12px;display:flex;flex-direction:column;gap:9px}
.source .src-b{margin-top:auto;font-size:11.5px;color:var(--faint);font-weight:600}
.gate{position:absolute;left:45.5%;top:50%;width:240px;height:168px;transform:translate(-50%,-50%);border-radius:18px;background:var(--acc);color:#fff;padding:22px 22px 20px;display:flex;flex-direction:column;justify-content:flex-start;text-align:center;box-shadow:0 20px 40px -20px rgba(31,78,156,.8)}
.gate b{display:block;font-size:17px;font-weight:800;margin-top:0}
.gate small{display:block;font-size:12px;color:rgba(255,255,255,.72);font-weight:600;margin-top:4px}
.gate .beam{display:block;height:3px;border-radius:3px;background:rgba(255,255,255,.28);position:relative;overflow:hidden;margin-top:12px}
.gate .beam::after{content:"";position:absolute;left:-35%;top:0;width:35%;height:100%;background:#fff;animation:beam 1.4s linear infinite}
@keyframes beam{to{left:110%}}
.lanes{position:absolute;right:28px;top:28px;bottom:28px;width:32%;border-radius:14px;background:#fff;border:1px solid var(--rule);box-shadow:var(--sh);padding:12px 18px 10px;display:grid;grid-template-rows:repeat(4,1fr) auto;align-items:center}
.lane{display:grid;grid-template-columns:78px minmax(0,1fr) 34px;gap:12px;align-items:center;font-size:13.5px;font-weight:800;border-bottom:1px solid var(--rule)}
.lane:nth-child(4){border-bottom:0}
.lane i{display:block;height:6px;border-radius:3px;background:var(--rule);overflow:hidden}
.lane i b{display:block;height:100%;width:var(--w,0%);background:var(--c);border-radius:3px;transition:width .6s cubic-bezier(.22,.61,.36,1)}
.lane em{font-style:normal;text-align:right;font-variant-numeric:tabular-nums;color:var(--c);font-size:14px}
.lanes-t{font-size:11.5px;color:var(--faint);font-weight:600;padding-top:8px}
.chip{position:absolute;left:0;top:0;height:30px;padding:0 12px;border-radius:999px;background:#fff;border:1px solid var(--rule-2);font:600 12.5px/30px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--ink-2);white-space:nowrap;box-shadow:0 6px 16px -10px rgba(18,22,28,.35);will-change:transform;transform:translate(-400px,140px);z-index:3}
.chip.sorted{color:#fff;border-color:transparent;background:var(--c)}

/* sections */
.sec{padding:76px 0}
.sec.alt{background:#fff;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.head{margin-bottom:30px}
.head .k{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--acc-soft);color:var(--acc);font-weight:800;font-size:14px;flex:none;margin-top:4px}
.head h2{font-size:clamp(24px,2.7vw,34px);line-height:1.15;font-weight:800;white-space:nowrap}
.head h2 span{color:var(--acc)}
.head p{margin-top:10px;font-size:16px;color:var(--ink-2);max-width:62ch}

/* illustrated cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.cards.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--rule);border-radius:var(--r);padding:20px 20px 22px;box-shadow:var(--sh);transition:transform .25s,box-shadow .25s,border-color .25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 1px 2px rgba(18,22,28,.04),0 24px 44px -22px rgba(31,78,156,.35);border-color:var(--acc-line)}
.card .art{height:118px;border-radius:12px;background:var(--acc-soft);display:grid;place-items:center;margin-bottom:18px;overflow:hidden}
.card .art svg{width:100%;height:100%}
.card h3{font-size:17px;font-weight:800;line-height:1.3}
.card p{margin-top:7px;font-size:14.5px;color:var(--ink-2);line-height:1.6}
.card .tag{display:inline-block;margin-bottom:10px;font-size:12px;font-weight:800;color:var(--c);letter-spacing:.02em}
.card.answer .art{background:color-mix(in srgb,var(--c) 10%,#fff)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;position:relative}
.step{background:var(--card);border:1px solid var(--rule);border-radius:var(--r);padding:22px;box-shadow:var(--sh);display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start}
.step .no{width:40px;height:40px;border-radius:12px;background:var(--acc);color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px}
.step h3{font-size:17px;font-weight:800}
.step p{margin-top:6px;font-size:14.5px;color:var(--ink-2);line-height:1.6}

/* learning */
.learn{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:24px;align-items:stretch}
.learn .big{background:var(--acc);color:#fff;border-radius:var(--r);padding:30px;display:flex;flex-direction:column;justify-content:space-between;gap:24px;box-shadow:0 24px 48px -24px rgba(31,78,156,.7)}
.learn .big h3{font-size:clamp(22px,2.4vw,30px);line-height:1.15;font-weight:800;letter-spacing:-.02em;max-width:18ch}
.learn .big p{font-size:14.5px;color:rgba(255,255,255,.78);line-height:1.6;max-width:40ch}
.learn .big svg{width:120px;height:80px}
.learn .list{display:grid;gap:12px}
.learn .item{background:var(--card);border:1px solid var(--rule);border-radius:var(--r);padding:18px 20px;display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;align-items:center;box-shadow:var(--sh)}
.learn .item .ic{width:52px;height:52px;border-radius:14px;background:var(--acc-soft);display:grid;place-items:center}
.learn .item .ic svg{width:26px;height:26px}
.learn .item b{font-size:15.5px;font-weight:800}
.learn .item p{font-size:14px;color:var(--ink-2);line-height:1.55;margin-top:3px}

/* questions */
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 22px;align-items:start}
.faq details{background:var(--card);border:1px solid var(--rule);border-radius:14px;box-shadow:var(--sh)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 18px;font-size:15.5px;font-weight:800}
.faq summary::-webkit-details-marker{display:none}
.faq summary .x{position:relative;width:26px;height:26px;border-radius:8px;background:var(--acc-soft);flex:none;transition:transform .3s,background .2s}
.faq summary .x::before,.faq summary .x::after{content:"";position:absolute;left:50%;top:50%;width:11px;height:2px;border-radius:2px;background:var(--acc);transform:translate(-50%,-50%)}
.faq summary .x::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq details[open] summary .x{transform:rotate(45deg)}
.faq details p{padding:0 18px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.65}

/* closing */
.closing{padding:0 0 72px}
.closing .in{border-radius:22px;background:linear-gradient(135deg,#F1F5FC,#FFFFFF);border:1px solid var(--rule);padding:38px 40px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:center;box-shadow:var(--sh)}
.closing h2{font-size:clamp(24px,2.8vw,34px);font-weight:800;line-height:1.15}
.closing h2 span{color:var(--acc)}
.closing p{margin-top:8px;font-size:15.5px;color:var(--ink-2);max-width:52ch}

/* footer */
footer{border-top:1px solid var(--rule);padding:22px 0 28px;background:#fff}
.foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--mute)}
.foot nav{display:flex;gap:22px}
.foot nav a{font-weight:700;color:var(--ink-2)}
.foot nav a:hover{color:var(--acc)}

/* reveal: fade + a few px rise */
.rv{opacity:0;transform:translateY(10px);transition:opacity .6s ease,transform .6s ease}
.rv.on{opacity:1;transform:none}

@media (max-width:1180px){.hero h1{white-space:normal}}
@media (max-width:1080px){.cards.four{grid-template-columns:repeat(2,minmax(0,1fr))}.lanes{width:34%}.source{width:20%}.gate{width:210px;left:43%}.head h2{white-space:normal}}
@media (max-width:900px){
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}.steps{grid-template-columns:1fr}.learn{grid-template-columns:1fr}.faq{grid-template-columns:1fr}
  .nav-links{display:none}.menu{display:block}.closing .in{grid-template-columns:1fr}
  .stage{height:auto;padding:14px;display:grid;gap:12px}.stage .grid{display:none}
  .source{position:static;width:100%;height:46px;padding:8px 14px;flex-direction:row;align-items:center;gap:8px}
  .source .src-t{margin:0;flex:none}.source i{height:6px;width:16%!important;margin:0}.source .src-b{display:none}
  .gate{position:static;transform:none;width:100%;height:auto;padding:16px 16px 44px}
  .lanes{position:static;width:100%;grid-template-rows:none;padding:10px 16px}.lane{padding:9px 0}
  .chip{height:26px;line-height:26px;font-size:11.5px;padding:0 10px}
  .hero h1,.head h2{white-space:normal}
}
@media (max-width:640px){
  .hero{padding:44px 0 28px}.sec{padding:52px 0}.cards,.cards.four{grid-template-columns:1fr}
}
/* render below-the-fold sections only when needed */
.sec,.closing,footer{content-visibility:auto;contain-intrinsic-size:1px 600px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}.rv{opacity:1;transform:none}.chip{display:none}}

/* ---- hero "Your list": a small sheet of masked addresses; each chip leaves from its row ---- */
.source{gap:0!important;overflow:hidden}
.src-h{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}
.src-t{font-size:13px;font-weight:800}
.src-n{font-size:11px;font-weight:700;color:var(--mute);font-variant-numeric:tabular-nums}
.src-n em{font-style:normal;color:var(--acc)}
.src-cols{display:grid;grid-template-columns:minmax(0,1fr) 34px 16px;gap:8px;padding:0 8px 5px;border-bottom:1px solid var(--rule);font-size:10px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}
.src-rows{list-style:none;margin:4px 0 0;padding:0;display:grid;gap:2px}
.src-rows li{display:grid;grid-template-columns:minmax(0,1fr) 34px 16px;gap:8px;align-items:center;height:23px;padding:0 8px;border-radius:7px;transition:background .3s ease,opacity .5s ease}
.src-rows code{font:600 11px/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.src-rows li i{height:6px;border-radius:3px;background:var(--rule)}
.src-rows li b{width:16px;height:16px;border-radius:50%;display:grid;place-items:center;color:#fff;background:transparent;transform:scale(.4);opacity:0;transition:transform .35s cubic-bezier(.34,1.4,.64,1),opacity .25s ease}
.src-rows li b svg{width:9px;height:9px}
.src-rows li.go{background:var(--acc-soft)}
.src-rows li.go code{color:var(--acc)}
.src-rows li.done{opacity:.55}
.src-rows li.done b{background:var(--valid);transform:scale(1);opacity:1}
.source .src-b{margin-top:auto;padding-top:8px}
@media (max-width:1080px){.src-cols,.src-rows li{grid-template-columns:minmax(0,1fr) 16px}.src-cols span:nth-child(2),.src-rows li i{display:none}}
@media (max-width:900px){.src-cols,.src-rows,.src-n{display:none}.src-h{margin:0}}
/* hero list: fit the caption inside the card (rows 2px shorter, tighter spacing) */
.src-h{margin-bottom:6px}
.src-rows{gap:1px;margin-top:3px}
.src-rows li{height:21px}
.source .src-b{padding-top:6px;font-size:11px;line-height:1.25}
/* hero list: title centred in the card */
.src-h{justify-content:center}