/* ============================================================
   ROAM & REWARD — design system
   paper & ink · travel-artifact editorial · one signal color
   ------------------------------------------------------------
   01 tokens        02 base          03 utilities
   04 grain/rail    05 nav           06 buttons
   07 hero          08 boarding pass 09 departures board
   10 sections      11 how it works  12 difference
   13 quote         14 rewards       15 tech
   16 operators     17 join          18 footer
   19 a11y/media
   ============================================================ */

/* ---------- 01 · tokens ---------- */
:root{
  /* color */
  --ink:      #0F1B23;
  --ink-2:    #15242E;
  --ink-3:    #1D3140;
  --ink-soft: #46545E;
  --paper:    #F1F0EA;
  --paper-2:  #E9E8DF;
  --paper-3:  #DCDBCF;
  --card:     #FBFBF7;
  --line:     rgba(15,27,35,.14);
  --line-ink: rgba(238,241,240,.13);
  --accent:      #2140C7;   /* ultramarine — the one accent          */
  --accent-text: #1D39B0;   /* small text on paper (AA)              */
  --accent-2:    #8FA4FF;   /* ultramarine, legible on ink (AA)      */
  --accent-mid:  #5470E0;   /* decorative, reads on paper AND ink    */
  --accent-hot:  #3D5BF0;   /* solid CTA surfaces                    */
  --stamp:       #B23A32;   /* carmine — stamps, receipt values, red-pen marks. NOTHING else */
  --mist:        #9BB0C9;   /* soft text on ink                      */
  --ok:          #5CBE8D;   /* board status green                    */
  --board-bg: #0A141B;
  --board-txt:#F2F0E6;

  /* type */
  --f-serif: 'Fraunces', Georgia, serif;
  --f-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --f-mono:  'IBM Plex Mono', ui-monospace, 'SF Mono', monospace;
  --fs-hero: clamp(2.9rem, 5.4vw + .8rem, 5.9rem);
  --fs-h2:   clamp(2.05rem, 2.9vw + .6rem, 3.55rem);
  --fs-h3:   clamp(1.22rem, 1.1vw + .6rem, 1.45rem);
  --fs-lead: clamp(1.04rem, .45vw + .85rem, 1.22rem);

  /* rhythm */
  --wrap: 1200px;
  --gut: clamp(20px, 4vw, 44px);
  --band: clamp(96px, 12vw, 170px);

  /* elevation */
  --shadow-lg: 0 32px 70px -30px rgba(15,27,35,.42), 0 6px 18px -8px rgba(15,27,35,.18);
  --shadow-md: 0 18px 44px -22px rgba(15,27,35,.35);
  --shadow-sm: 0 6px 18px -10px rgba(15,27,35,.25);

  /* motion */
  --ease-out: cubic-bezier(.22,1,.36,1);
  --ease-io:  cubic-bezier(.65,0,.35,1);
}

/* ---------- 02 · base ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html.lenis{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto}
body{
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
h1,h2,h3{
  font-family:var(--f-serif);
  font-weight:520;
  font-variation-settings:'opsz' 144;
  line-height:1.04;
  letter-spacing:-.015em;
  text-wrap:balance;
}
h1 em,h2 em,h3 em{font-style:italic;font-weight:480;color:var(--accent)}
.band-ink h2 em,.band-ink h3 em,.join h2 em{color:var(--accent-2)}
/* emphasis variants — the gold italic is rationed to hero, quote & join */
.em-ink{color:inherit!important;font-style:italic;font-weight:480}
.em-paper{color:var(--paper)!important;font-style:italic;font-weight:480}
.u-underline{
  /* positioned inside the line box so SplitText line masks can't clip it */
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 9' preserveAspectRatio='none'%3E%3Cpath d='M2 6.5C25 3.5 60 3 118 5.2' fill='none' stroke='%23B23A32' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:0 88%;background-size:100% .13em;
}
.u-highlight{
  font-style:italic;font-weight:480;
  background:linear-gradient(104deg, transparent .4em, rgba(33,64,199,.14) .5em calc(100% - .4em), transparent calc(100% - .3em));
  padding-inline:.12em;margin-inline:-.12em;
  box-decoration-break:clone;-webkit-box-decoration-break:clone;
}
.u-circle{position:relative;font-style:italic;font-weight:480}
.u-circle::after{
  content:"";position:absolute;inset:-.18em -.28em -.22em;
  border:2.5px solid var(--stamp);border-radius:50%;
  transform:rotate(-3deg);opacity:.75;
  pointer-events:none;
}
p{text-wrap:pretty}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
img,svg{display:block;max-width:100%}
::selection{background:var(--accent-2);color:var(--ink)}

/* ---------- 03 · utilities ---------- */
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;padding:10px 18px;border-radius:8px;
  background:var(--ink);color:var(--paper);font-weight:600;font-size:.9rem;
  transform:translateY(-64px);transition:transform .25s var(--ease-out);
}
.skip-link:focus-visible{transform:none}
.mono-label{
  font-family:var(--f-mono);font-size:.72rem;font-weight:500;
  letter-spacing:.17em;text-transform:uppercase;
}
.mono-tight{font-family:var(--f-mono);font-weight:600;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.eyebrow{
  font-family:var(--f-mono);font-size:.74rem;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--accent-text);
  display:flex;align-items:center;gap:14px;
}
.eyebrow .sec-num{
  font-weight:600;color:var(--ink);
  border:1px solid var(--line);border-radius:6px;padding:3px 7px;
  letter-spacing:.08em;
}
.band-ink .eyebrow{color:var(--mist)}
.band-ink .eyebrow .sec-num{color:var(--paper);border-color:var(--line-ink)}
.eyebrow.gold{color:var(--accent-2)}
.eyebrow-sep{color:var(--accent)}

/* ---------- 04 · grain + route rail ---------- */
.grain{
  position:fixed;inset:-50%;z-index:120;pointer-events:none;opacity:.045;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}
.rail{
  position:fixed;left:26px;top:50%;translate:0 -50%;z-index:60;
  height:min(46vh,420px);width:14px;
  display:flex;justify-content:center;
  opacity:0;transition:opacity .6s ease .2s;
}
.rail.on{opacity:1}
.rail-line{position:absolute;top:0;bottom:0;width:1.5px;background:rgba(120,131,133,.35);border-radius:2px;overflow:hidden}
.rail-line-fill{width:100%;height:100%;background:var(--accent-mid);transform-origin:top;transform:scaleY(0)}
.rail-plane{
  position:absolute;top:0;left:50%;translate:-50% -50%;color:var(--accent-mid);
  filter:drop-shadow(0 1px 2px rgba(15,27,35,.4));
}
.rail-stops{position:absolute;inset:0}
.rail-stop{
  position:absolute;left:50%;translate:-50% -50%;width:5px;height:5px;border-radius:50%;
  background:rgba(120,131,133,.55);
}
.rail-stop.passed{background:var(--accent-mid)}
@media(max-width:1359px){.rail{display:none}}

/* ---------- 05 · nav ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:100}
.nav::before{
  content:"";position:absolute;inset:0;
  background:color-mix(in srgb, var(--paper) 86%, transparent);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  opacity:0;transition:opacity .4s ease, border-color .4s ease;
}
.nav.scrolled::before{opacity:1;border-bottom-color:var(--line)}
.nav-inner{
  position:relative;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:78px;transition:height .35s var(--ease-out);
}
.nav.scrolled .nav-inner{height:62px}
.brand{
  font-family:var(--f-serif);font-weight:560;font-size:1.22rem;letter-spacing:-.02em;
  display:flex;align-items:baseline;gap:.32ch;white-space:nowrap;
}
.brand .amp{color:var(--accent);font-style:italic;font-weight:480}
.nav-links{display:flex;gap:clamp(16px,2.4vw,34px)}
.nav-links a{
  position:relative;font-size:.88rem;font-weight:520;color:var(--ink-soft);
  padding-block:6px;transition:color .25s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:2px;height:1.5px;width:100%;
  background:var(--ink);transform:scaleX(0);transform-origin:right;
  transition:transform .35s var(--ease-out);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-menu-btn{
  display:none;width:42px;height:42px;border-radius:10px;
  align-items:center;justify-content:center;color:var(--ink);
}
@media(max-width:760px){
  .nav-menu-btn{display:inline-flex}
  .nav-links{
    display:flex;flex-direction:column;gap:0;
    position:absolute;top:100%;left:12px;right:12px;
    background:var(--card);border:1px solid var(--line);border-radius:16px;
    padding:10px;box-shadow:var(--shadow-md);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s ease, transform .25s ease, visibility .25s;
  }
  .nav.menu-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:13px 16px;font-size:1rem;border-radius:10px}
  .nav-links a:hover{background:var(--paper)}
  .nav-links a::after{display:none}
}

/* ---------- 06 · buttons & links ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:999px;font-weight:600;white-space:nowrap;
  /* no transform transition — magnetic hover is driven by JS */
  transition:box-shadow .3s var(--ease-out), background-color .3s ease, color .3s ease;
  will-change:transform;
}
.btn-primary{
  background:var(--ink);color:var(--paper);font-size:.98rem;
  padding:16px 32px;box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.btn-primary::before{
  content:"";position:absolute;inset:0;border-radius:inherit;
  background:var(--accent);
  transform:translateY(102%);transition:transform .45s var(--ease-out);
}
.btn-primary:hover::before{transform:none}
.btn-primary>*{position:relative}
.btn-primary:hover{box-shadow:var(--shadow-md)}
.btn-nav{
  font-size:.85rem;padding:10px 20px;border:1.5px solid var(--ink);color:var(--ink);
}
.btn-nav:hover{background:var(--ink);color:var(--paper)}
.btn-gold{
  background:var(--accent-hot);color:#fff;font-size:.96rem;padding:16px 30px;
}
.btn-gold:hover{box-shadow:0 14px 34px -12px rgba(61,91,240,.45)}
.btn-panel{
  background:var(--paper);color:var(--ink);width:100%;padding:15px 24px;font-size:.95rem;
  margin-top:30px;
}
.btn-panel:hover{background:var(--card)}
.link-arrow{
  display:inline-flex;align-items:center;gap:9px;font-weight:560;font-size:.96rem;
  padding-block:14px;
}
.link-arrow .arr{transition:transform .3s var(--ease-out)}
.link-arrow:hover .arr{transform:translateY(4px)}

/* ---------- 07 · hero ---------- */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:clamp(120px,14vh,160px) 0 90px;overflow:hidden;
}
.hero-arc{
  position:absolute;inset:0;width:100%;height:100%;color:var(--accent);
  opacity:.38;pointer-events:none;
  /* keep the doodle out of the copy column — it lives in the gutter
     and above the pass, never over text */
  -webkit-mask-image:linear-gradient(100deg, transparent 30%, #000 46%);
  mask-image:linear-gradient(100deg, transparent 30%, #000 46%);
}
.hero-arc-plane{color:var(--accent)}
.hero-grid{
  display:grid;grid-template-columns:1.04fr .96fr;gap:clamp(40px,6vw,90px);
  align-items:center;width:100%;
}
.hero-title{font-size:var(--fs-hero);margin-top:26px}
.hero-title em{white-space:nowrap}
.lead{
  font-size:var(--fs-lead);color:var(--ink-soft);max-width:34ch;margin-top:26px;
  line-height:1.6;
}
.cta-row{display:flex;align-items:center;gap:26px;margin-top:40px;flex-wrap:wrap}
.ticket-fine{
  margin-top:34px;padding-top:20px;border-top:1px dashed var(--line);
  font-family:var(--f-mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-soft);display:flex;align-items:center;gap:10px;max-width:52ch;
}
.ticket-fine .tick{
  width:17px;height:17px;border-radius:50%;background:var(--accent);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:.62rem;flex-shrink:0;
}
.scroll-cue{
  position:absolute;bottom:26px;left:50%;translate:-50%;
  display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--ink-soft);
}
.scroll-cue-label{font-family:var(--f-mono);font-size:.62rem;letter-spacing:.3em;text-transform:uppercase}
.scroll-cue-line{position:relative;width:1.5px;height:44px;background:var(--line);overflow:hidden}
.scroll-cue-line::after{
  content:"";position:absolute;inset:0;background:var(--ink);
  animation:cue 2.1s var(--ease-io) infinite;
}
@keyframes cue{
  0%{transform:translateY(-100%)}45%{transform:translateY(0)}
  100%{transform:translateY(100%)}
}

/* ---------- 08 · boarding pass ---------- */
.hero-visual{position:relative}
.pass{
  position:relative;border-radius:20px;
  filter:drop-shadow(0 36px 50px rgba(15,27,35,.28)) drop-shadow(0 8px 16px rgba(15,27,35,.12));
  transform:rotate(1.6deg);
}
.pass-tilt{
  position:relative;background:var(--card);border-radius:20px;overflow:hidden;
  border:1px solid rgba(15,27,35,.09);
  transform-style:preserve-3d;will-change:transform;
}
.pass-top{
  background:var(--ink);color:var(--paper);
  padding:24px 28px;display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.pass-route{display:flex;align-items:center;gap:14px;font-size:1.35rem}
.pass-airport{letter-spacing:.06em}
.pass-plane{color:var(--accent-2)}
.pass-kind{
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--mist);
}
.pass-body{padding:10px 28px}
.pass-row{
  display:flex;justify-content:space-between;align-items:baseline;gap:18px;
  padding:15px 0;border-bottom:1px dashed var(--line);
}
.pass-row:last-child{border-bottom:none}
.pass-label{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft)}
.pass-val{font-weight:600;font-size:.99rem;text-align:right}
.pass-val.good{color:var(--accent)}
.pass-perfline{
  position:relative;height:0;border-top:2px dashed var(--paper-3);margin:4px 0;
}
.pass-notch{
  position:absolute;width:26px;height:26px;border-radius:50%;background:var(--paper);
  border:1px solid rgba(15,27,35,.09);
  top:calc(100% - 118px);
}
.pass-notch.l{left:-14px}
.pass-notch.r{right:-14px}
.pass-reward{
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  padding:22px 28px 24px;
  background:linear-gradient(100deg,#E7EBF8,#DDE3F4);
}
.pass-reward-num{
  display:block;font-family:var(--f-serif);font-weight:560;font-size:1.9rem;line-height:1;
  color:var(--ink);font-variant-numeric:tabular-nums;
}
.pass-reward-cap{display:block;margin-top:6px;font-size:.8rem;color:#3E4E7C;font-weight:520}
.pass-barcode{width:96px;height:40px;color:var(--ink);opacity:.82;flex-shrink:0}
.pass-stamp{
  position:absolute;left:0;right:0;top:41%;margin-inline:auto;width:fit-content;
  color:var(--stamp);opacity:.88;transform:rotate(-9deg);
  mix-blend-mode:multiply;
  border:2.5px solid currentColor;border-radius:10px;
  padding:8px 16px 9px;text-align:center;
  font-family:var(--f-mono);text-transform:uppercase;
}
.pass-stamp::after{
  content:"";position:absolute;inset:3px;border:1px solid currentColor;border-radius:6px;
}
.pass-stamp .st-sub{display:block;font-size:.56rem;letter-spacing:.3em;font-weight:500}
.pass-stamp .st-main{display:block;font-size:.88rem;letter-spacing:.18em;font-weight:600;margin-top:2px}
.pass-stamp-mini{top:42%;padding:6px 12px 7px}
.pass-stamp-mini .st-sub{font-size:.5rem}
.pass-stamp-mini .st-main{font-size:.76rem}
/* luggage stickers — attached to the pass, not floating UI */
.sticker{
  position:absolute;display:flex;align-items:center;gap:8px;
  background:var(--paper-2);border:1px solid rgba(15,27,35,.18);border-radius:7px;
  padding:8px 13px;
  font-family:var(--f-mono);font-size:.64rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  box-shadow:0 3px 10px -4px rgba(15,27,35,.35), inset 0 0 0 3px var(--card);
  z-index:5;
}
.sticker svg{flex-shrink:0}
.sticker-1{top:-13px;right:26px;transform:rotate(3deg);color:var(--accent-text)}
.sticker-2{bottom:-12px;left:-14px;transform:rotate(-4deg);color:var(--accent-text)}

/* mini pass reused in "how" */
.pass-mini{max-width:400px;transform:none;filter:drop-shadow(0 24px 38px rgba(15,27,35,.2))}
.pass-mini .pass-top{padding:18px 24px}
.pass-mini .pass-route{font-size:1.1rem}
.pass-mini .pass-body{padding:6px 24px 10px}
.pass-mini .pass-val{font-size:.94rem}
.pass-mini .pass-val.searching{color:var(--ink-soft);font-weight:500;font-style:italic}
.pass-mini .pass-val.good{color:var(--accent)}

/* ---------- 09 · departures board ---------- */
.departures{padding:clamp(30px,5vw,70px) 0 0}
.board{
  background:var(--board-bg);border-radius:22px;padding:clamp(20px,3vw,36px);
  box-shadow:var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,.05);
  color:var(--board-txt);
}
.board-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}
.board-title{color:var(--board-txt);display:flex;align-items:center;gap:10px}
.board-dot{
  width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 10px rgba(92,190,141,.8);
  animation:pulse 2.4s ease infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.board-utc{color:var(--mist)}
.board-cols{
  display:grid;grid-template-columns:auto auto auto auto;justify-content:space-between;gap:18px;
  padding:10px 6px;color:var(--mist);
  border-bottom:1px solid rgba(240,240,234,.12);
}
.board-rows{display:flex;flex-direction:column}
.board-row{
  display:grid;grid-template-columns:auto auto auto auto;justify-content:space-between;gap:18px;
  padding:13px 6px;align-items:center;
  border-bottom:1px solid rgba(240,240,234,.07);
}
.board-row:last-child{border-bottom:none}
.flap-group{display:flex;gap:2.5px}
.cell{
  position:relative;
  width:var(--cellw,1.18ch);height:var(--cellh,30px);
  font-family:var(--f-mono);font-weight:600;font-size:var(--cellfs,15px);
  perspective:260px;color:var(--board-txt);
}
.cell i{
  position:absolute;left:0;width:100%;height:var(--cellh,30px);
  font-style:normal;display:flex;align-items:center;justify-content:center;
}
.half{
  position:absolute;left:0;right:0;height:50%;overflow:hidden;
  background:linear-gradient(180deg,#182835, #0E1D28);
}
.half.top{top:0;border-radius:3.5px 3.5px 0 0;box-shadow:inset 0 1.5px 0 rgba(255,255,255,.09), inset 1px 0 0 rgba(255,255,255,.03)}
.half.top i{top:0}
.half.bottom{bottom:0;border-radius:0 0 3.5px 3.5px;background:linear-gradient(180deg,#10202B,#0A1620);box-shadow:inset 0 -1.5px 2px rgba(0,0,0,.5)}
.half.bottom i{bottom:0}
.cell::after{ /* hinge line */
  content:"";position:absolute;left:0;right:0;top:calc(50% - 1px);height:2px;
  background:linear-gradient(180deg, rgba(0,0,0,.65), rgba(0,0,0,.3));z-index:4;
}
.leaf{
  position:absolute;left:0;right:0;top:0;height:50%;z-index:3;
  transform-style:preserve-3d;transform-origin:bottom;
  pointer-events:none;
}
.leaf-front,.leaf-back{
  position:absolute;inset:0;overflow:hidden;backface-visibility:hidden;
  background:linear-gradient(180deg,#182835,#0E1D28);border-radius:3.5px 3.5px 0 0;
}
.leaf-front i{top:0}
.leaf-back{
  transform:rotateX(180deg);
  background:linear-gradient(180deg,#10202B,#0A1620);border-radius:0 0 3.5px 3.5px;
}
.leaf-back i{bottom:0}
.cell.flipping .leaf{transition:transform .13s cubic-bezier(.6,.1,.75,.6);transform:rotateX(-180deg)}
.cell[data-kind="code"],.cell[data-kind="reward"]{color:var(--board-txt)}
.cell[data-kind="status"]{color:var(--mist);--cellfs:13px}
.fg-status.live .cell{color:var(--ok)}
.board-fine{
  margin-top:18px;font-family:var(--f-mono);font-size:.66rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--mist);
}

/* ---------- 10 · sections ---------- */
.band{padding-block:var(--band)}
.band-ink{background:var(--ink);color:var(--paper)}
.sec-head{max-width:70ch}
.sec-head h2{font-size:var(--fs-h2);margin-top:26px}
.sec-lead{font-size:var(--fs-lead);color:var(--ink-soft);margin-top:22px;max-width:56ch}
.band-ink .sec-lead{color:#B3C3D3}

/* ---------- 11 · how it works ---------- */
.how{padding-bottom:calc(var(--band) * .7)}
.how-grid{
  display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(48px,7vw,110px);
  margin-top:clamp(48px,6vw,84px);align-items:start;
}
.how-sticky{position:sticky;top:22vh}
.how-steps{list-style:none;display:flex;flex-direction:column}
.how-steps.js{gap:clamp(48px,9vh,90px)}
.how-steps:not(.js){gap:52px}
.how-step{max-width:46ch;transition:opacity .5s ease}
.how-step-head{display:flex;align-items:center;gap:18px;margin-bottom:18px}
.how-num{color:var(--accent);font-weight:600}
.how-rule{flex:1;height:1px;background:var(--line);transform-origin:left;transition:transform .8s var(--ease-out)}
.how-step h3{font-size:clamp(1.5rem,1.6vw + .8rem,2rem);margin-bottom:12px}
.how-step p{color:var(--ink-soft);font-size:1.02rem;max-width:44ch}
.how-steps.js .how-step{opacity:.3}
.how-steps.js .how-step.active{opacity:1}
.how-steps.js .how-step .how-rule{transform:scaleX(.15)}
.how-steps.js .how-step.active .how-rule{transform:scaleX(1)}

/* ---------- 12 · difference — a receipt vs a boarding pass ---------- */
.difference{padding-top:calc(var(--band) * .55)}
.diff-grid{
  display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(28px,4vw,54px);
  margin-top:clamp(44px,6vw,72px);align-items:center;
}
.mk{
  width:21px;height:21px;border-radius:50%;flex-shrink:0;margin-top:2px;
  display:inline-flex;align-items:center;justify-content:center;font-size:.68rem;font-weight:700;
}

/* the eSIM side: a thermal receipt */
.receipt{
  position:relative;background:#EDECE3;max-width:400px;width:100%;
  margin-inline:auto;
  padding:34px 30px 40px;
  font-family:var(--f-mono);text-transform:uppercase;letter-spacing:.06em;
  color:#3A3F45;
  transform:rotate(-1.2deg);
  box-shadow:0 18px 40px -18px rgba(15,27,35,.35);
  border-top:1px solid rgba(15,27,35,.08);
}
.receipt::after{ /* torn bottom edge */
  content:"";position:absolute;left:0;right:0;bottom:-11px;height:12px;
  background-image:
    linear-gradient(135deg,#EDECE3 50%,transparent 50%),
    linear-gradient(45deg,transparent 50%,#EDECE3 50%);
  background-size:14px 12px;background-repeat:repeat-x;
  filter:drop-shadow(0 3px 3px rgba(15,27,35,.08));
}
.receipt-head{
  text-align:center;font-size:.82rem;font-weight:600;letter-spacing:.24em;line-height:1.7;
  padding-bottom:18px;margin-bottom:18px;
  border-bottom:1.5px dashed rgba(58,63,69,.35);
}
.receipt-lines{list-style:none;display:flex;flex-direction:column;gap:13px;font-size:.78rem}
.receipt-lines li,.receipt-total{display:flex;align-items:baseline;gap:8px}
.receipt-lines li>span:last-child,.receipt-total>span:last-child{color:var(--stamp);font-weight:600;white-space:nowrap}
.receipt .dots{flex:1;border-bottom:1.5px dotted rgba(58,63,69,.45);translate:0 -3px}
.receipt-total{
  margin-top:20px;padding-top:16px;border-top:1.5px dashed rgba(58,63,69,.35);
  font-size:.85rem;font-weight:600;
}
.receipt-foot{margin-top:22px;text-align:center;font-size:.62rem;letter-spacing:.2em;color:#676F76}

/* the Roam & Reward side: a boarding pass */
.bp{
  position:relative;background:var(--card);border-radius:18px;overflow:hidden;
  border:1px solid rgba(15,27,35,.09);
  box-shadow:var(--shadow-md);
}
.bp-top{
  background:var(--ink);color:var(--paper);
  padding:20px 28px;display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.bp-brand{font-family:var(--f-serif);font-weight:560;font-size:1.15rem;letter-spacing:-.01em}
.bp-brand .amp{color:var(--accent-2);font-style:italic}
.bp-rows{list-style:none;padding:10px 28px 22px}
.bp .pass-val.good{color:var(--ink)}
.bp .ck{color:var(--accent-text);font-weight:700}
.diff-stamp{
  position:absolute;left:0;right:0;top:56%;margin-inline:auto;width:fit-content;
  color:var(--stamp);
  border:2px solid currentColor;border-radius:8px;padding:7px 12px;
  transform:rotate(-7deg);letter-spacing:.14em;font-weight:600;
  opacity:.85;mix-blend-mode:multiply;
}
.diff-stamp::after{content:"";position:absolute;inset:3px;border:1px solid currentColor;border-radius:5px}

/* ---------- 13 · quote ---------- */
.quote{padding-block:calc(var(--band) * .9)}
.quote-grid{display:flex;align-items:stretch;gap:clamp(30px,5vw,70px)}
.quote-block{position:relative;max-width:940px;padding-top:.6em}
.quote-mark{
  position:absolute;top:-.12em;left:-.06em;
  font-family:var(--f-serif);font-style:italic;font-weight:440;
  font-size:clamp(5rem,9vw,9rem);line-height:1;color:var(--accent-2);opacity:.45;
  user-select:none;
}
.quote-text{
  position:relative;
  font-family:var(--f-serif);font-weight:440;font-style:italic;
  font-size:clamp(1.7rem,2.6vw + .7rem,3.1rem);line-height:1.3;letter-spacing:-.01em;
  text-indent:1.6ch;
}
.quote-text em{color:var(--accent-2);font-style:italic}
.quote-text .qw{opacity:.14}
.quote-src{
  margin-left:auto;flex-shrink:0;align-self:stretch;
  display:flex;align-items:flex-end;
  writing-mode:vertical-rl;
  color:#8CA0B8;
  border-right:1px solid var(--line-ink);padding-right:18px;
}
@media(max-width:900px){
  .quote-grid{flex-direction:column;gap:26px}
  .quote-src{writing-mode:horizontal-tb;border-right:none;padding:0;margin-left:0;align-self:flex-start}
}

/* ---------- 14 · rewards ---------- */
.tags-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(22px,2.8vw,34px);
  margin-top:clamp(50px,6.5vw,80px);
}
/* luggage tags: angled end, reinforced grommet, string, slight hang */
.tag-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:10px 18px 18px 10px;
  padding:30px 28px 28px 30px;box-shadow:var(--shadow-sm);
  clip-path:polygon(0 26%, 9% 0, 100% 0, 100% 100%, 9% 100%, 0 74%);
  padding-left:calc(28px + 5%);
  transform:rotate(var(--tag-tilt,0deg));
  transform-origin:6% 50%;
  transition:transform .5s var(--ease-out), box-shadow .5s var(--ease-out);
}
.tag-card:nth-child(1){--tag-tilt:-1.1deg}
.tag-card:nth-child(3){--tag-tilt:1.3deg}
.tag-card:hover{transform:rotate(calc(var(--tag-tilt,0deg) + 1.6deg)) translateY(-3px);box-shadow:var(--shadow-md)}
.tag-hole{
  position:absolute;top:calc(50% - 9px);left:14px;width:18px;height:18px;border-radius:50%;
  background:var(--paper);
  box-shadow:inset 0 1px 3px rgba(15,27,35,.4), 0 0 0 5px #DEDDD2, 0 0 0 6px rgba(15,27,35,.18);
}
.tag-hole::after{ /* string through the grommet */
  content:"";position:absolute;top:7px;left:-42px;width:44px;height:26px;
  border-bottom:1.5px solid rgba(15,27,35,.35);
  border-radius:0 0 60% 20%;
  transform:rotate(16deg);
}
.tag-icon{color:var(--accent);margin:4px 0 18px}
.tag-card h3{font-size:var(--fs-h3);margin-bottom:10px}
.tag-card p{color:var(--ink-soft);font-size:.95rem;min-height:3.2em}
.tag-rate{
  display:inline-block;margin-top:20px;padding-top:14px;color:var(--accent-text);
  border-top:1px dashed var(--line);letter-spacing:.12em;font-weight:600;
}

/* estimator */
.estimator{
  margin-top:clamp(40px,5vw,64px);
  background:var(--paper-2);border:1px solid var(--line);border-radius:22px;
  padding:clamp(30px,4vw,52px);
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,60px);align-items:center;
}
.estimator-title{font-size:clamp(1.5rem,1.8vw + .6rem,2.1rem)}
.estimator-sub{color:var(--ink-soft);margin-top:10px;font-size:.98rem}
.estimator-slider{margin-top:26px}
.estimator-slider label{color:var(--ink-soft)}
.slider-row{display:flex;align-items:center;gap:22px;margin-top:14px}
.slider-out{font-size:1.15rem;min-width:4.4ch;text-align:right}
input[type="range"]{
  flex:1;appearance:none;-webkit-appearance:none;height:28px;background:none;cursor:pointer;
  --fill:18%;
}
input[type="range"]::-webkit-slider-runnable-track{
  height:5px;border-radius:4px;
  background:linear-gradient(90deg, var(--accent) var(--fill), rgba(15,27,35,.2) var(--fill));
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;width:26px;height:26px;border-radius:50%;
  background:var(--ink) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M22 12.4l-8.8-3.3V3.7a1.55 1.55 0 10-3.1 0v5.4L1.3 12.4v2.5l8.8-2.2v4.5l-2.6 1.9v1.6l4.2-1 4.2 1v-1.6l-2.6-1.9v-4.5l8.7 2.2z' fill='%23F1F0EA' transform='rotate(90 12 12)'/%3E%3C/svg%3E") center/13px no-repeat;
  border:none;margin-top:-10.5px;
  box-shadow:0 0 0 4px rgba(15,27,35,.1), 0 3px 8px -2px rgba(15,27,35,.4);
  transition:box-shadow .25s ease, transform .25s ease;
}
input[type="range"]:active::-webkit-slider-thumb{transform:scale(1.12);box-shadow:0 0 0 8px rgba(33,64,199,.18)}
input[type="range"]::-moz-range-track{
  height:5px;border-radius:4px;
  background:linear-gradient(90deg, var(--accent) var(--fill), rgba(15,27,35,.2) var(--fill));
}
input[type="range"]::-moz-range-thumb{
  width:26px;height:26px;border-radius:50%;border:none;
  background:var(--ink) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M22 12.4l-8.8-3.3V3.7a1.55 1.55 0 10-3.1 0v5.4L1.3 12.4v2.5l8.8-2.2v4.5l-2.6 1.9v1.6l4.2-1 4.2 1v-1.6l-2.6-1.9v-4.5l8.7 2.2z' fill='%23F1F0EA' transform='rotate(90 12 12)'/%3E%3C/svg%3E") center/13px no-repeat;
  box-shadow:0 0 0 4px rgba(15,27,35,.1), 0 3px 8px -2px rgba(15,27,35,.4);
}
/* flap-digit readouts (motion mode) */
.readout-num .flap-group{gap:2.5px}
.readout-num .cell{--cellh:38px;--cellfs:19px;--cellw:1.25ch}
.cell[data-kind="est"]{color:var(--board-txt)}
.estimator-readouts{
  grid-column:1 / -1;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px dashed rgba(15,27,35,.22);padding-top:clamp(24px,3vw,38px);
}
.readout{display:flex;flex-direction:column;gap:8px}
.readout-num{font-size:clamp(1.6rem,2vw + .6rem,2.4rem);color:var(--ink);line-height:1}
.readout-cap{color:var(--ink-soft)}
.readout-or{color:var(--accent-text);font-weight:600}
.estimator-fine{
  grid-column:1 / -1;margin-top:2px;
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-soft);
}

/* ---------- 15 · tech ---------- */
.tech-stage{margin-top:clamp(48px,6vw,84px)}
.tech-diagram{
  position:sticky;top:86px;z-index:3;
  width:100%;height:auto;
  max-height:min(44vh,420px); /* leave room for steps on laptop viewports */
  background:var(--ink);
  box-shadow:0 34px 30px -26px var(--ink);
}
.tf-plate{fill:var(--ink);opacity:.95}
.tech-stage.offstage .tf-path{animation-play-state:paused}
.tech-node rect{fill:var(--ink-2);stroke:var(--ink-3);stroke-width:1.2;transition:stroke .5s ease, fill .5s ease}
.tech-node.active rect{stroke:var(--accent-2);fill:#17293E}
.tn-title{fill:var(--paper);font-family:var(--f-sans);font-weight:600;font-size:16px}
.tn-sub{fill:var(--mist);font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em}
.tech-flow{opacity:.13;transition:opacity .6s ease}
.tech-flow.active{opacity:1}
.tf-path{
  stroke:var(--accent-2);stroke-width:1.8;fill:none;
  stroke-dasharray:7 7;stroke-linecap:round;
}
.tf-path.hot{stroke:var(--ok);stroke-width:2.2}
.tech-flow.active .tf-path{animation:march 1.1s linear infinite}
@keyframes march{to{stroke-dashoffset:-14}}
.tf-label{fill:var(--mist);font-family:var(--f-mono);font-size:11px;letter-spacing:.08em}
.tf-label.hot{fill:var(--ok)}
.tech-steps{
  list-style:none;display:flex;flex-direction:column;
  max-width:620px;margin-top:clamp(50px,9vh,90px);
}
.tech-steps.js{gap:clamp(70px,15vh,140px);padding-bottom:8vh}
.tech-steps:not(.js){gap:56px}
.tech-step{display:flex;gap:20px;transition:opacity .5s ease}
.tech-steps.js .tech-step{opacity:.32}
.tech-steps.js .tech-step.active{opacity:1}
.tech-step-k{
  flex-shrink:0;width:34px;height:34px;border:1.5px solid var(--accent-2);border-radius:9px;
  color:var(--accent-2);display:inline-flex;align-items:center;justify-content:center;
  font-weight:600;margin-top:4px;
}
.tech-step h3{font-size:clamp(1.3rem,1.2vw + .7rem,1.65rem);color:#fff;margin-bottom:10px}
.tech-step p{color:#B3C3D3;font-size:.99rem;max-width:44ch}
.tech-foot{
  list-style:none;margin-top:clamp(48px,6vw,76px);padding-top:30px;
  border-top:1px solid var(--line-ink);
  display:flex;flex-wrap:wrap;gap:16px 40px;
}
.tech-foot li{display:flex;align-items:center;gap:11px;font-size:.92rem;color:#D8E1EA;font-weight:500}
.tf-mk{
  width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;font-size:.64rem;
}

/* ---------- 16 · operators ---------- */
.operators{padding-top:calc(var(--band) * .8)}
.op-card{
  background:var(--card);border:1px solid var(--line);border-radius:26px;
  box-shadow:var(--shadow-md);
  display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(36px,5vw,72px);
  padding:clamp(32px,5vw,64px);align-items:center;
}
.op-copy h2{font-size:clamp(1.9rem,2.4vw + .6rem,2.9rem);margin-top:24px}
.op-points{list-style:none;margin-top:28px;display:flex;flex-direction:column;gap:14px}
.op-points li{display:flex;gap:13px;align-items:flex-start;font-weight:520;font-size:.99rem}
.op-points .mk{background:var(--paper-2);color:var(--accent)}
.op-panel{
  background:var(--ink);color:var(--paper);border-radius:20px;
  padding:clamp(28px,3vw,40px);
}
.op-big{
  font-family:var(--f-serif);font-weight:560;line-height:1;color:#fff;
  font-size:3.6rem;font-variant-numeric:tabular-nums;
}
.op-big .op-slash{color:var(--accent-2);font-style:italic;font-weight:440;padding-inline:.06em}
.op-cap{font-size:.9rem;color:#B3C3D3;margin-top:10px;max-width:30ch}
.split-bar{
  display:flex;height:38px;border-radius:10px;overflow:hidden;margin-top:28px;
  font-size:.6rem;
}
.split-a,.split-b{display:flex;align-items:center;justify-content:center;min-width:0;overflow:hidden}
.split-a{flex:1;background:var(--accent);color:#fff}
.split-b{
  flex:1;color:var(--mist);
  background:repeating-linear-gradient(-45deg, rgba(143,164,255,.26) 0 5px, transparent 5px 11px);
  box-shadow:inset 0 0 0 1px var(--line-ink);
}
.split-a .mono-label,.split-b .mono-label{font-size:.6rem;letter-spacing:.14em;white-space:nowrap}

/* ---------- 17 · join ---------- */
.join-band{padding-top:calc(var(--band) * .5)}
.join{
  position:relative;overflow:hidden;border-radius:28px;
  background:linear-gradient(118deg,#0D2733 0%, var(--ink) 55%, #0A1B24 100%);
  color:var(--paper);padding:clamp(44px,6vw,84px);
  box-shadow:var(--shadow-lg);
}
.join::before{
  content:"";position:absolute;right:-140px;top:-140px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle, rgba(84,112,255,.22), transparent 68%);
}
.join::after{
  content:"";position:absolute;left:-80px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle, rgba(84,112,255,.10), transparent 68%);
}
.join-inner{position:relative;z-index:2;max-width:640px}
.join .eyebrow .sec-num{color:var(--paper);border-color:rgba(237,240,238,.25)}
.join h2{font-size:clamp(2rem,3vw + .5rem,3.2rem);color:#fff;margin-top:24px}
.join h2 em{color:var(--accent-2)}
.join-lead{color:#C4D2E0;font-size:var(--fs-lead);margin-top:18px;max-width:48ch}
.join-form{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
.join-form input{
  flex:1;min-width:240px;padding:16px 24px;border-radius:999px;
  border:1.5px solid rgba(237,240,238,.25);background:rgba(237,240,238,.07);
  color:#fff;font-size:1rem;font-family:inherit;
  transition:border-color .3s ease, background .3s ease;
}
.join-form input::placeholder{color:#8AA0B5}
.join-form input:focus{outline:none;border-color:var(--accent-2);background:rgba(237,240,238,.12)}
.join-form input.error{border-color:var(--stamp)}
.btn-gold-plane{transition:transform .4s var(--ease-out);will-change:transform}
.btn-gold:hover .btn-gold-plane{transform:translateX(4px) translateY(-2px)}
.join-msg{margin-top:18px;font-size:.95rem;font-weight:520;color:#C6D2F0;min-height:1.4em}
.join-fine{
  margin-top:12px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--mist);
}

/* ---------- 18 · footer ---------- */
.footer{padding:clamp(60px,8vw,100px) 0 34px;border-top:1px solid var(--line)}
.foot-grid{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.foot-links{display:flex;gap:clamp(18px,3vw,34px);flex-wrap:wrap}
.foot-links a{
  font-size:.9rem;font-weight:520;color:var(--ink-soft);position:relative;padding-block:4px;
}
.foot-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--ink);
  transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease-out);
}
.foot-links a:hover{color:var(--ink)}
.foot-links a:hover::after{transform:scaleX(1);transform-origin:left}
.foot-fine{color:var(--ink-soft)}
.foot-mark{
  display:flex;align-items:baseline;justify-content:center;gap:.18ch;
  margin-top:clamp(40px,6vw,70px);
  font-family:var(--f-serif);font-weight:560;letter-spacing:-.03em;line-height:.9;
  font-size:clamp(3.4rem,12.5vw,10.5rem);
  color:transparent;-webkit-text-stroke:1.5px rgba(15,27,35,.32);
  user-select:none;
}
.foot-mark .foot-amp{
  color:var(--accent);-webkit-text-stroke:0;font-style:italic;font-weight:440;
  font-size:.82em;
}
.foot-legal{
  margin-top:clamp(30px,4vw,46px);text-align:center;color:var(--ink-soft);opacity:.75;
}

/* ---------- 19 · a11y & media ---------- */
:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:4px}
.band-ink :focus-visible,.join :focus-visible{outline-color:var(--accent-2)}
section[id],[id="main"]{scroll-margin-top:90px}

@media(max-width:1080px){
  .how-grid{grid-template-columns:1fr}
  .how-sticky{position:static;display:flex;justify-content:flex-start}
  .how-steps.js .how-step{opacity:1}
  .how-steps.js .how-step .how-rule{transform:none}
  .tech-diagram{position:static;box-shadow:none}
  .tech-steps.js .tech-step{opacity:1}
  .estimator{grid-template-columns:1fr}
}
@media(max-width:900px){
  .hero{min-height:auto;padding-top:130px}
  .hero-grid{grid-template-columns:1fr;gap:70px}
  .hero-visual{max-width:480px}
  .hero-arc{display:none}
  .lead{max-width:44ch}
  .scroll-cue{display:none}
  .diff-grid{grid-template-columns:1fr;gap:44px}
  .tags-grid{grid-template-columns:1fr;max-width:440px}
  .tag-card p{min-height:0}
  .op-card{grid-template-columns:1fr}
}
@media(max-width:760px){
  .nav-links{display:none}
  .cell{--cellw:1.12ch;--cellh:24px;--cellfs:12.5px}
  .cell[data-kind="status"]{--cellfs:11px}
  .board-cols,.board-row{gap:10px}
  .cta-row{gap:18px}
  .estimator-readouts{flex-direction:column;align-items:flex-start;gap:20px}
  .readout-or{display:none}
  .pass-stamp{right:8px}
  .foot-grid{flex-direction:column;align-items:flex-start}
}
@media(max-width:560px){
  .board-cols,.board-row{grid-template-columns:auto auto auto}
  .bc-status{display:none}
  .board .fg-status{display:none}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .scroll-cue-line::after{display:none}
}