:root {
  --paper: #f6f4ee;
  --paper-2: #efece3;
  --ink: #141414;
  --ink-2: #4a4945;
  --mute: #8a877f;
  --blue: #3341e0;
  --orange: #ea8a4f;
  --line: rgba(20, 20, 20, .14);
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --wrap: 1140px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 400; }
em { font-style: italic; color: var(--blue); }
.wrap { width: min(var(--wrap), 100% - 48px); margin-inline: auto; }
.mono { font: 400 12px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); transition: box-shadow .3s; }
.nav.is-scrolled { box-shadow: 0 1px 0 var(--line); }
.nav__row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15px; letter-spacing: -.01em; }
.logo svg { width: 22px; height: 22px; fill: none; stroke: var(--ink); stroke-width: 2.4; stroke-linecap: round; transition: transform .6s var(--ease); }
.logo:hover svg { transform: rotate(-90deg); }
.nav__links { display: flex; gap: 30px; font-size: 14px; color: var(--ink-2); }
.nav__links a { position: relative; padding: 4px 0; }
.nav__links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .35s var(--ease); }
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__row > .btn { justify-self: end; }
.dotstrip { display: block; width: 100%; height: 26px; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; height: 44px; padding: 0 20px; border-radius: 999px; font: 500 14px/1 var(--sans); white-space: nowrap; transition: transform .25s var(--ease), background .25s, color .25s, box-shadow .25s; }
.btn--sm { height: 38px; padding: 0 17px; font-size: 13.5px; }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: var(--blue); }
.btn--ghost { border: 1.5px solid var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); }
.btn--paper { background: var(--paper); color: var(--ink); }
.btn--paper:hover { background: var(--orange); }
.btn--line { border: 1.5px solid rgba(246, 244, 238, .5); color: var(--paper); }
.btn--line:hover { border-color: var(--paper); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(.98); }
.btn .arr { display: inline-block; transition: transform .3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }
.btn:focus-visible, .nav__links a:focus-visible, .logo:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; display: flex; flex-direction: column; min-height: calc(100svh - 98px); }
.hero__copy { text-align: center; padding: clamp(18px, 3.2vh, 40px) 0 0; position: relative; z-index: 2; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; font: 400 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); }
.eyebrow--light { color: rgba(246, 244, 238, .7); }
.pip { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 0 rgba(234, 138, 79, .5); animation: pip 2.4s infinite; }
@keyframes pip { 0% { box-shadow: 0 0 0 0 rgba(234, 138, 79, .55); } 70%, 100% { box-shadow: 0 0 0 9px rgba(234, 138, 79, 0); } }
.hero__title { font: 400 clamp(44px, 5.4vw, 80px)/1 var(--serif); letter-spacing: -.025em; margin: 0 auto; max-width: 13em; }
.hero__title .w { display: inline-block; overflow: hidden; padding: .06em .02em .12em; margin: -.06em 0 -.12em; vertical-align: top; }
.hero__title .w > * { display: inline-block; transform: translateY(105%); animation: rise 1.1s var(--ease) forwards; }
.hero__title .w:nth-child(1) > * { animation-delay: .15s; }
.hero__title .w:nth-child(2) > * { animation-delay: .22s; }
.hero__title .w:nth-child(3) > * { animation-delay: .29s; }
.hero__title .w:nth-child(4) > * { animation-delay: .38s; }
.hero__title .w:nth-child(5) > * { animation-delay: .45s; }
.hero__title .w:nth-child(6) > * { animation-delay: .52s; }
.hero__title .w:nth-child(7) > * { animation-delay: .57s; }
.hero__title .w:nth-child(8) > * { animation-delay: .62s; }
.hero__title em { padding-right: .04em; }
@keyframes rise { to { transform: none; } }
.hero__sub { max-width: 31em; margin: clamp(14px, 2.2vh, 22px) auto 0; color: var(--ink-2); font-size: clamp(15px, 1.25vw, 17px); }
.hero__cta { display: flex; gap: 10px; justify-content: center; margin-top: clamp(18px, 2.8vh, 28px); flex-wrap: wrap; }
.hero__cta--left { justify-content: flex-start; }
.in { opacity: 0; transform: translateY(14px); animation: fadeUp .9s var(--ease) var(--d, 0s) forwards; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }

.scene { position: relative; flex: 1 0 auto; margin-top: clamp(4px, 2vh, 24px); height: clamp(300px, 34vw, 640px); }
.scene svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; overflow: visible; }
.scene::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 40px; background: linear-gradient(transparent, var(--paper)); pointer-events: none; }

/* svg entrance */
#city .rise { transform-box: fill-box; transform-origin: 50% 100%; transform: translateY(110%); animation: riseB 1.3s var(--ease) var(--d, 0s) forwards; }
#city .pop { transform-box: fill-box; transform-origin: 50% 50%; transform: scale(0); animation: pop 1.4s var(--ease) var(--d, 0s) forwards; }
#city .fade { opacity: 0; animation: fade 1.6s ease var(--d, 0s) forwards; }
@keyframes riseB { to { transform: none; } }
@keyframes pop { to { transform: none; } }
@keyframes fade { to { opacity: 1; } }
#city .tw { transform-box: fill-box; transform-origin: center; animation: twinkle 3.2s ease-in-out var(--d, 0s) infinite; }
@keyframes twinkle { 0%, 100% { transform: scale(1) rotate(0); opacity: 1; } 50% { transform: scale(.55) rotate(45deg); opacity: .5; } }

/* ---------- ticker ---------- */
.ticker { border-block: 1px solid var(--line); overflow: hidden; padding: 16px 0; background: var(--paper); position: relative; z-index: 2; }
.ticker__track { display: flex; width: max-content; animation: tick 60s linear infinite; }
.ticker__track span { font: 400 13px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-2); padding: 0 22px; display: inline-flex; align-items: center; gap: 22px; white-space: nowrap; }
.ticker__track span::after { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
.ticker__track span:nth-child(5n)::after { background: var(--orange); }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
section { position: relative; }
.how, .walks { padding: clamp(80px, 11vw, 150px) 0; }
.sec-head { max-width: 640px; margin-bottom: clamp(36px, 5vw, 64px); }
.sec-head--row { max-width: none; display: flex; justify-content: space-between; align-items: end; gap: 24px; flex-wrap: wrap; }
.sec-head h2, .cta h2 { font: 400 clamp(38px, 5vw, 66px)/1.02 var(--serif); letter-spacing: -.02em; }

.reveal { opacity: 0; transform: translateY(36px); transition: opacity .9s var(--ease) var(--d, 0s), transform 1.1s var(--ease) var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { position: relative; padding: 26px 26px 30px; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); transition: transform .5s var(--ease), box-shadow .5s var(--ease); }
.step:hover { transform: translateY(-6px); box-shadow: 0 24px 40px -28px rgba(20, 20, 20, .35); }
.step__art { height: 150px; margin: -8px -8px 18px; border-radius: 14px; background: var(--paper-2); overflow: hidden; }
.step__art svg, .card__art svg { width: 100%; height: 100%; display: block; }
.step__n { font: 400 12px/1 var(--mono); color: var(--orange); letter-spacing: .1em; }
.step h3 { font: 400 32px/1.1 var(--serif); margin: 10px 0 10px; }
.step p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ---------- line map ---------- */
.line { height: 260vh; background: var(--ink); color: var(--paper); }
.line .eyebrow { color: rgba(246, 244, 238, .7); }
.line em { color: #8f98ff; }
.line__pin { position: sticky; top: 98px; min-height: calc(100vh - 98px); display: flex; align-items: center; padding: 40px 0; overflow: hidden; }
.line__pin > .wrap { width: min(var(--wrap), 100% - 48px); }
.map { --p: 0; position: relative; margin: 30px 0 46px; }
.map__rail { margin: 0 9px; position: relative; height: 6px; border-radius: 6px; background: rgba(246, 244, 238, .16); }
.map__fill { position: absolute; inset: 0; border-radius: inherit; background: var(--orange); transform-origin: left; transform: scaleX(var(--p)); }
.map__train { position: absolute; top: 50%; left: max(calc(var(--p) * 100%), 90px); display: flex; gap: 3px; transform: translate(-100%, -50%); }
.map__train span { width: 26px; height: 16px; border-radius: 4px; background: var(--paper); border: 2px solid var(--orange); }
.map__train span:last-child { border-radius: 4px 9px 9px 4px; }
.map__stops { list-style: none; padding: 0; margin: 0; position: absolute; inset: -6px 0 auto; display: flex; justify-content: space-between; pointer-events: none; }
.map__stops li { position: relative; width: 18px; height: 18px; display: grid; place-items: center; }
.map__stops li::before { content: ""; width: 14px; height: 14px; border-radius: 50%; background: var(--ink); border: 2.5px solid rgba(246, 244, 238, .45); transition: border-color .3s, background .3s, transform .4s var(--ease); }
.map__stops li.on::before { border-color: var(--orange); background: var(--paper); }
.map__stops li.cur::before { transform: scale(1.45); }
.map__stops li b { position: absolute; top: 30px; left: 50%; transform-origin: 0 0; transform: rotate(38deg); font: 400 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; color: rgba(246, 244, 238, .45); transition: color .3s; }
.map__stops li.on b { color: var(--paper); }
.map__readout { display: grid; gap: 8px; margin-top: 120px; }
.map__readout .mono { color: rgba(246, 244, 238, .55); }
.map__name { font: 400 clamp(44px, 7vw, 96px)/1 var(--serif); letter-spacing: -.02em; }

/* ---------- walk cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { border-radius: 22px; overflow: hidden; background: #fff; border: 1px solid var(--line); transition: transform .5s var(--ease), box-shadow .5s var(--ease); }
.card:hover { transform: translateY(-6px); box-shadow: 0 30px 50px -30px rgba(20, 20, 20, .4); }
.card__art { aspect-ratio: 4 / 3; background: var(--paper-2); overflow: hidden; }
.card__art svg { transition: transform 1.2s var(--ease); }
.card:hover .card__art svg { transform: scale(1.05); }
.card__body { padding: 22px 24px 26px; }
.card h3 { font: 400 27px/1.12 var(--serif); margin: 10px 0 16px; }
.card__meta { display: flex; gap: 8px; margin: 0; flex-wrap: wrap; }
.card__meta span { font-size: 12.5px; padding: 5px 11px; border-radius: 999px; background: var(--paper); color: var(--ink-2); }

/* ---------- stats ---------- */
.stats { padding: 0 0 clamp(80px, 10vw, 140px); }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.stat { padding: 34px 20px 0 0; display: grid; gap: 6px; }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--line); }
.stat strong { font: 400 clamp(52px, 6vw, 84px)/1 var(--serif); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.stat span { color: var(--ink-2); font-size: 14.5px; }

/* ---------- CTA ---------- */
.cta { padding-bottom: clamp(60px, 8vw, 110px); }
.cta__panel { position: relative; overflow: hidden; border-radius: 30px; background: var(--ink); color: var(--paper); min-height: 460px; display: flex; align-items: center; padding: clamp(36px, 6vw, 80px); }
.cta__art { position: absolute; right: -4%; top: 50%; width: min(620px, 70%); height: 120%; transform: translateY(-50%); }
.cta__copy { position: relative; max-width: 560px; }
.cta h2 { margin-bottom: 30px; }
.cta em { color: #f3a571; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); }
.foot__row { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 30px 0 40px; flex-wrap: wrap; }
.foot__row p { margin: 0; }
.foot__copy { font-size: 13px; color: var(--mute); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .steps, .cards { grid-template-columns: 1fr; max-width: 520px; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat { padding-bottom: 28px; }
  .cta__art { opacity: .45; width: 100%; right: -30%; }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__row { grid-template-columns: 1fr auto; height: 62px; }
  .hero__copy { padding-top: 22px; }
  .hero__title { max-width: 9em; }
  .scene { height: auto; min-height: 340px; }
  .line { height: 300vh; }
  .line__pin { top: 88px; min-height: calc(100vh - 88px); }
  .map { margin-right: 34px; }
  .map__stops li b { font-size: 9.5px; transform: rotate(55deg); }
  .map__stops li:nth-child(even) b { display: none; }
  .map__readout { margin-top: 90px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* illustration motion */
.cta-spin, .orbit { transform-box: view-box; transform-origin: 50% 50%; }
.cta-spin { animation: spin 90s linear infinite; }
.orbit { animation: spin 14s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.steam { animation: steam 2.6s ease-in-out calc(var(--i) * .4s) infinite; }
@keyframes steam { 0%, 100% { transform: translateY(0); opacity: .9; } 50% { transform: translateY(-6px); opacity: .35; } }
.draw { animation: dash 2.4s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -26; } }