/* Crosslines — four-line diagram index */
:root{
  --paper:#FFFFFF;
  --ink:#0B1F3A;
  --mist:#EEF1F5;
  --rule:#D3DAE3;
  --red:#E4002B;
  --blue:#0072CE;
  --green:#00A651;
  --orange:#FF8200;
  --stroke:14px;
  --pitchx:28px;          /* spacing between parallel lines */
  --pad:28px;
  --sans:"Lexend",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Crimson Pro",Georgia,"Times New Roman",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{overflow-x:hidden;overflow-x:clip;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);font-size:1.2rem;line-height:1.55;overflow-x:hidden;overflow-x:clip}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--sans);line-height:1.12;margin:0;letter-spacing:-.015em}
p{margin:0 0 .9em}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;font-family:var(--sans);z-index:50}
.skip:focus{top:12px}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}

.wrap{max-width:1180px;margin:0 auto;padding:0 var(--pad)}
.wrap--narrow{max-width:860px}
.wrap--text{max-width:760px}

/* line colour plumbing */
.red,.pill--red,.term--red,.turn--red,.pass--red,.feed--red,.route--red,.catband--red,.docband--red,.docline--red,.fdot--red,.leg--red{--c:var(--red);--on:#fff}
.blue,.pill--blue,.term--blue,.turn--blue,.pass--blue,.feed--blue,.route--blue,.catband--blue,.docband--blue,.docline--blue,.fdot--blue,.leg--blue{--c:var(--blue);--on:#fff}
.green,.pill--green,.term--green,.turn--green,.pass--green,.feed--green,.route--green,.catband--green,.docband--green,.docline--green,.fdot--green,.leg--green{--c:var(--green);--on:var(--ink)}
.orange,.pill--orange,.term--orange,.turn--orange,.pass--orange,.feed--orange,.route--orange,.catband--orange,.docband--orange,.docline--orange,.fdot--orange,.leg--orange{--c:var(--orange);--on:var(--ink)}
.slot-0{--x:calc(var(--pitchx) * 3);--y:0px}
.slot-1{--x:calc(var(--pitchx) * 2);--y:26px}
.slot-2{--x:var(--pitchx);--y:52px}
.slot-3{--x:0px;--y:78px}

/* ---------- header ---------- */
.topbar{background:#fff;border-bottom:2px solid var(--ink);position:relative;z-index:20}
.topbar__in{max-width:1180px;margin:0 auto;padding:16px var(--pad);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--sans);font-weight:700;font-size:1.45rem;letter-spacing:-.02em}
.mark{width:44px;height:24px;flex:none}
.lines-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:10px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:.3em;background:var(--c);color:var(--on);text-decoration:none;font-family:var(--sans);font-weight:600;font-size:.94rem;line-height:1;padding:10px 16px;border-radius:999px;border:2px solid var(--c);transition:background-color .15s,color .15s}
.pill:hover{background:#fff;color:var(--ink)}
.pill[aria-current="page"]{box-shadow:0 0 0 3px #fff,0 0 0 5px var(--ink)}
.burger{display:none;width:48px;height:48px;border:2px solid var(--ink);background:#fff;border-radius:12px;cursor:pointer;padding:0;position:relative}
.burger__bars,.burger__bars::before,.burger__bars::after{position:absolute;left:11px;width:22px;height:3px;border-radius:2px;background:var(--ink);content:"";transition:transform .2s,opacity .2s}
.burger__bars{top:21.5px}
.burger__bars::before{left:0;top:-7px}
.burger__bars::after{left:0;top:7px}
.burger[aria-expanded="true"] .burger__bars{background:transparent}
.burger[aria-expanded="true"] .burger__bars::before{transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] .burger__bars::after{transform:translateY(-7px) rotate(-45deg)}

/* ---------- terminus + markers ---------- */
.term{display:inline-grid;place-items:center;width:72px;height:72px;border-radius:50%;background:#fff;border:10px solid var(--c);font-family:var(--sans);font-weight:700;font-size:1.65rem;color:var(--ink);line-height:1}
.term--big{width:84px;height:84px;font-size:2rem;border-color:var(--ink);flex:none}

/* ---------- hero ---------- */
.hero{padding:56px 0 0}
.hero__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,360px);gap:48px 56px;align-items:center}
.hero__copy{min-width:0}
.kicker{font-family:var(--sans);font-weight:600;font-size:.88rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.kicker::before{content:"";width:10px;height:8px;background:var(--red);box-shadow:10px 0 0 var(--blue),20px 0 0 var(--green),30px 0 0 var(--orange);margin-right:30px}
.hero__h{font-weight:700;font-size:clamp(2.2rem,4.8vw,4.1rem);letter-spacing:-.03em;max-width:14ch}
.hero__stand{font-size:clamp(1.2rem,1.9vw,1.45rem);margin:20px 0 0;max-width:38ch}

.slot{position:relative;margin:0;max-width:360px;width:100%;justify-self:end}
.slot__rail{position:absolute;inset:-10px -10px auto auto;display:flex;gap:5px;z-index:2}
.slot__tick{width:22px;height:7px;border-radius:4px;background:var(--ink)}
.slot__tick--red{background:var(--red)}
.slot__tick--blue{background:var(--blue)}
.slot__tick--green{background:var(--green)}
.slot__tick--orange{background:var(--orange)}
.slot__frame{position:relative;padding:10px;border-radius:28px;background:
  linear-gradient(155deg,#f7f8fa 0%,var(--mist) 55%,#e4e9f0 100%);
  border:2px solid var(--ink);
  box-shadow:12px 14px 0 0 var(--ink)}
.slot__frame::before{content:"";position:absolute;inset:18px;border-radius:18px;border:1px solid rgba(201,162,39,.45);pointer-events:none;z-index:1}
.slot__img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:18px;background:#1a1a1a}
.slot--casino{margin:0 auto;justify-self:center}

/* lines feeding in from the left edge */
.feeds{position:relative;height:112px;margin-top:44px}
.feed{position:absolute;top:var(--y);bottom:0;left:-100vw;width:calc(100vw + var(--pad) + var(--x) + var(--stroke));border-top:var(--stroke) solid var(--c);border-right:var(--stroke) solid var(--c);border-top-right-radius:40px}

/* ---------- network ---------- */
.network{--track:400px;--ty:84px;--tend:316px}
.pass{position:absolute;top:-1px;bottom:0;left:var(--x);width:var(--stroke);background:var(--c)}
.network__label{position:relative;padding:26px 0 18px var(--track);font-family:var(--sans);font-weight:600;font-size:.88rem;letter-spacing:.1em;text-transform:uppercase}
.network__label .pass{left:calc(var(--x))}
.leg{position:relative;padding:44px 0 52px var(--track);border-top:1px solid var(--rule)}
.leg:nth-of-type(even){background:var(--mist);box-shadow:0 0 0 100vmax var(--mist);clip-path:inset(0 -100vmax)}
.leg__track{position:absolute;inset:0;pointer-events:none}
.turn{position:absolute;top:-1px;left:var(--x);height:calc(var(--ty) + var(--stroke) / 2);width:calc(var(--tend) - var(--x));border-left:var(--stroke) solid var(--c);border-bottom:var(--stroke) solid var(--c);border-bottom-left-radius:40px}
.turn__dots{position:absolute;left:40px;right:60px;bottom:calc(var(--stroke) * -1);height:var(--stroke);display:flex;align-items:center;justify-content:space-evenly}
.dot{width:8px;height:8px;border-radius:50%;background:#fff}
.leg__track .term{position:absolute;left:calc(var(--tend) - 36px);top:calc(var(--ty) - 36px)}
.leg__text{display:block;max-width:600px}
.leg__num{display:none}
.leg__name{font-weight:700;font-size:clamp(1.9rem,3.4vw,2.7rem);margin:14px 0 14px;letter-spacing:-.025em}
.leg__body p{font-size:1.25rem}
.leg__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin:18px 0 0}
.count{font-family:var(--sans);font-weight:600;font-size:.92rem;display:inline-flex;align-items:center;gap:8px}
.count::before{content:"";width:22px;height:8px;border-radius:4px;background:var(--c)}
.leg__link{font-family:var(--sans);font-weight:600;font-size:1rem;text-underline-offset:5px;text-decoration-thickness:2px}
.leg__link:hover{text-decoration-color:var(--c);text-decoration-thickness:4px}

/* ---------- method ---------- */
.method{padding:80px 0 96px;border-top:2px solid var(--ink)}
.method__h{font-weight:700;font-size:clamp(1.8rem,3vw,2.4rem);margin-bottom:40px}
.method__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative}
.method__grid::before{content:"";position:absolute;top:13px;left:16px;right:16px;height:6px;border-radius:3px;background:var(--ink)}
.xchg{display:block;position:relative;width:32px;height:32px;border-radius:50%;background:#fff;border:6px solid var(--ink);margin-bottom:22px}
.note h3{font-weight:600;font-size:1.3rem;margin-bottom:10px}
.note p{font-size:1.15rem}

/* ---------- category pages ---------- */
.catband{background:var(--c);color:var(--on);padding:52px 0 48px}
.catband__in{display:flex;align-items:center;gap:28px}
.catband__k{font-family:var(--sans);font-weight:600;font-size:.85rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 6px}
.catband h1{font-weight:700;font-size:clamp(2.4rem,6vw,4.2rem);letter-spacing:-.03em}
.catband__d{font-size:1.3rem;margin:10px 0 0;max-width:46ch}
.cat-photo{padding:36px 0 8px}
.cat-photo .slot{max-width:320px}

.route{--lx:24px;list-style:none;margin:48px 0 0;padding:0 0 0 84px;position:relative}
.route::before{content:"";position:absolute;left:calc(42px - var(--stroke) / 2);top:-48px;bottom:-30px;width:var(--stroke);background:var(--c);border-radius:0 0 7px 7px}
.stop{position:relative;margin:0 0 30px}
.stop__mark{position:absolute;left:calc(42px - 20px - 84px);top:30px;width:40px;height:40px;border-radius:50%;background:#fff;border:9px solid var(--c)}
.plate{background:#fff;border:1px solid var(--rule);border-radius:16px;padding:28px 32px 26px}
.plate__name{font-weight:700;font-size:clamp(1.55rem,3vw,2.05rem);letter-spacing:-.02em}
.plate__where{font-family:var(--sans);font-weight:500;font-size:.95rem;margin:8px 0 18px;display:flex;align-items:center;gap:8px}
.plate__where::before{content:"";width:10px;height:10px;border-radius:50%;border:3px solid var(--c);flex:none}
.plate p{font-size:1.2rem}
.tags{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tags li{font-family:var(--sans);font-weight:500;font-size:.82rem;line-height:1.2;padding:7px 13px;border:2px solid var(--c);border-radius:999px;background:#fff}
.route__end{display:flex;align-items:center;gap:18px;margin:30px 0 0 6px;font-family:var(--sans);font-weight:600;font-size:.98rem;position:relative}
.route__end .term{position:relative}
.onward{margin:44px 0 88px;padding-top:28px;border-top:1px solid var(--rule)}
.onward .pill{font-size:1.05rem;padding:14px 22px}

/* ---------- text pages ---------- */
.docband{background:var(--c);color:var(--on);padding:30px 0 28px}
.docband h1{font-weight:700;font-size:clamp(2rem,4.4vw,3rem)}
.docline{display:flex;align-items:center;margin:30px 0 34px}
.docline span{width:140px;height:var(--stroke);border-radius:7px 0 0 7px;background:var(--c)}
.docline::after{content:"";width:34px;height:34px;border-radius:50%;background:#fff;border:9px solid var(--c);margin-left:-8px}
.prose{padding-bottom:96px}
.prose .lede{font-size:1.45rem;line-height:1.45}
.prose h2{font-weight:600;font-size:1.4rem;margin:2em 0 .55em}
.prose ul{padding-left:1.2em}
.prose li{margin-bottom:.5em}
.prose a{text-underline-offset:4px;text-decoration-thickness:2px}
.mailline{font-family:var(--sans);font-weight:600;font-size:clamp(1.05rem,3vw,1.4rem);word-break:break-word}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:#fff}
.foot__in{max-width:1180px;margin:0 auto;padding:64px var(--pad) 40px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px}
.foot__brand{display:flex;align-items:center;gap:10px;font-family:var(--sans);font-weight:700;font-size:1.4rem;margin-bottom:14px}
.foot__brand .mark circle{fill:var(--ink);stroke:#fff}
.foot__about p:last-child{max-width:40ch;font-size:1.1rem;opacity:.92}
.foot__h{font-weight:600;font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px;opacity:.85}
.foot__list{list-style:none;margin:0;padding:0}
.foot__list li{margin-bottom:10px}
.foot__list a{text-decoration:none;font-family:var(--sans);font-weight:500;font-size:1rem;display:inline-flex;align-items:center;gap:10px}
.foot__list a:hover{text-decoration:underline;text-underline-offset:4px}
.fdot{width:12px;height:12px;border-radius:50%;background:var(--c);flex:none}
.foot__close{max-width:1180px;margin:0 auto;padding:22px var(--pad) 30px;border-top:1px solid rgba(255,255,255,.22);font-size:1rem;opacity:.85}

/* ---------- optional motion ---------- */
@media (prefers-reduced-motion:no-preference){
  .feed{animation:draw 1.1s cubic-bezier(.3,.6,.25,1) both}
  .feed.slot-1{animation-delay:.08s}.feed.slot-2{animation-delay:.16s}.feed.slot-3{animation-delay:.24s}
  @keyframes draw{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
  .hero__copy{animation:rise .7s cubic-bezier(.2,.7,.2,1) both}
  .slot{animation:rise .8s .12s cubic-bezier(.2,.7,.2,1) both}
  @keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .network{--track:330px;--tend:262px}
}
@media (max-width:860px){
  :root{--pad:16px}
  .burger{display:block}
  .lines-nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:2px solid var(--ink);padding:16px var(--pad) 20px}
  .lines-nav.is-open{display:block}
  .lines-nav ul{flex-direction:column;gap:10px}
  .lines-nav .pill{display:flex;justify-content:space-between;padding:14px 18px;font-size:1.02rem}
  .topbar{position:sticky;top:0}
  .hero{padding-top:36px}
  .hero__grid{grid-template-columns:1fr;gap:28px}
  .slot{max-width:260px;justify-self:start}
  .slot__frame{padding:8px;border-radius:22px;box-shadow:8px 10px 0 0 var(--ink)}
  .slot__frame::before{inset:14px;border-radius:14px}
  .slot__img{border-radius:14px}
  .slot__rail{inset:-8px -8px auto auto}
  .slot__tick{width:16px;height:6px}
  .cat-photo{padding:28px 0 4px}
  .cat-photo .slot{max-width:240px;margin:0 auto}
  .feeds{height:90px;margin-top:32px;--pitchx:18px}
  .feed{border-top-width:8px;border-right-width:8px;width:calc(100vw + var(--pad) + var(--x) + 8px);border-top-right-radius:24px}
  .slot-0{--y:0px}.slot-1{--y:16px}.slot-2{--y:32px}.slot-3{--y:48px}
  .network__label{padding:12px 0 10px 0;--pitchx:18px}
  .network__label .pass{width:8px;border-radius:0 0 4px 4px}
  .network__label span:last-child{display:block;padding-left:80px}
  .leg{padding:30px 0 34px}
  .leg__track{display:none}
  .leg__text{display:grid;grid-template-columns:56px 1fr;gap:18px;max-width:none}
  .leg__num{display:inline-grid;width:56px;height:56px;border-width:7px;font-size:1.3rem;position:relative}
  .leg__num::after{content:"";position:absolute;left:50%;top:calc(100% + 7px);width:6px;height:46px;margin-left:-3px;border-radius:3px;background:var(--c)}
  .leg__name{margin-top:6px}
  .leg__body p{font-size:1.15rem}
  .method{padding:56px 0 64px}
  .method__grid{grid-template-columns:1fr;gap:30px}
  .method__grid::before{top:16px;bottom:16px;left:13px;right:auto;width:6px;height:auto}
  .note{padding-left:54px;position:relative}
  .xchg{position:absolute;left:0;top:0}
  .catband{padding:36px 0 34px}
  .catband__in{gap:18px;align-items:flex-start}
  .term--big{width:62px;height:62px;font-size:1.45rem;border-width:8px}
  .route{--stroke:6px;padding-left:40px;margin-top:34px}
  .route::before{left:calc(16px - 3px);top:-34px}
  .stop__mark{left:calc(16px - 13px - 40px);top:26px;width:26px;height:26px;border-width:6px}
  .plate{padding:22px 20px 20px}
  .plate p{font-size:1.12rem}
  .route__end{margin-left:-15px}
  .route__end .term{width:62px;height:62px;border-width:8px;font-size:1.3rem}
  .foot__in{grid-template-columns:1fr;gap:34px;padding-top:48px}
}
@media (max-width:420px){
  .brand{font-size:1.25rem}
  .mark{width:36px;height:20px}
}