@font-face { font-family: 'Space Grotesk'; src: url(../fonts/space-grotesk-var.woff2) format('woff2'); font-weight: 300 700; font-display: swap; }
@font-face { font-family: 'Satoshi'; src: url(../fonts/satoshi-var.woff2) format('woff2'); font-weight: 300 900; font-display: swap; }
@font-face { font-family: 'Instrument Serif'; src: url(../fonts/instrument-serif-400.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url(../fonts/jetbrains-mono-400.woff2) format('woff2'); font-weight: 400; font-display: swap; }
:root {
  --ink: #05060b; --ivory: #F5F2EA; --text: #D9DCE2; --muted: #8A919C; --line: rgba(255,255,255,.1);
  --gold: #D4AF37; --gold-hi: #F0D077;
  --metal: linear-gradient(180deg, #FFF3CF 6%, #F0D077 22%, #D4AF37 48%, #BE9330 70%, #A17C26 90%);
  --silver: linear-gradient(180deg, #FFFFFF 6%, #E9ECF0 22%, #C2C8D0 48%, #A8B0BA 70%, #8E97A2 90%);
  --f-d: 'Space Grotesk', system-ui, sans-serif; --f-b: 'Satoshi', system-ui, sans-serif; --f-s: 'Instrument Serif', Georgia, serif; --f-m: 'JetBrains Mono', ui-monospace, monospace;
  --ease: cubic-bezier(.2,.7,.1,1); --g: clamp(16px, 3vw, 40px);
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--ink); color: var(--text); font: 400 16px/1.55 var(--f-b); -webkit-font-smoothing: antialiased; }
body.is-loading { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
em { font-family: var(--f-s); font-style: italic; font-weight: 400; color: var(--gold-hi); }
kbd { font: 500 11px var(--f-m); letter-spacing: .08em; padding: 3px 7px; border-radius: 6px; border: 1px solid rgba(240,208,119,.4); color: var(--gold-hi); background: rgba(240,208,119,.06); }
.eyebrow { font: 500 12px var(--f-m); letter-spacing: .24em; text-transform: uppercase; color: var(--gold-hi); margin: 0 0 18px; }

#world { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; z-index: 0; }
.grain { position: fixed; inset: -50%; z-index: 1; pointer-events: none; opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.1s steps(6) infinite; }
@keyframes grain { 0%,100% { transform: translate(0,0) } 25% { transform: translate(-3%,2%) } 50% { transform: translate(2%,-3%) } 75% { transform: translate(-2%,-2%) } }
.track { position: relative; z-index: 0; width: 1px; pointer-events: none; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; height: 50px; padding: 0 24px; border-radius: 999px; font: 600 14.5px var(--f-b); letter-spacing: .01em; transition: transform .5s var(--ease), box-shadow .5s, background .3s, border-color .3s; white-space: nowrap; }
.btn--gold { background: linear-gradient(180deg, #F0D077, #C99A2E); color: #15110a; box-shadow: 0 10px 40px -12px rgba(240,208,119,.6), inset 0 1px 0 rgba(255,255,255,.5); }
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 50px -12px rgba(240,208,119,.8), inset 0 1px 0 rgba(255,255,255,.5); }
.btn--ghost { border: 1px solid rgba(255,255,255,.18); background: rgba(10,11,16,.45); backdrop-filter: blur(10px); color: var(--ivory); }
.btn--ghost:hover { border-color: var(--gold-hi); }
.btn[disabled] { opacity: .35; pointer-events: none; }
.pill { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: 999px; border: 1px solid rgba(255,255,255,.12); background: rgba(8,9,14,.55); backdrop-filter: blur(14px); font: 500 13px var(--f-b); color: var(--ivory); transition: border-color .3s, background .3s; }
.pill:hover, .pill.is-on { border-color: rgba(240,208,119,.6); background: rgba(240,208,119,.1); }
.pill svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.pill--gold { background: linear-gradient(180deg, #F0D077, #C99A2E); color: #15110a; border: 0; font-weight: 600; }
.pill .i-pause { display: none; } .pill.is-on .i-pause { display: block; } .pill.is-on .i-play { display: none; }
.link { font: 500 13px var(--f-m); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-top: 26px; }
.link:hover { color: var(--gold-hi); }
.chip { font: 500 11.5px var(--f-m); letter-spacing: .14em; text-transform: uppercase; padding: 6px 12px; border-radius: 999px; border: 1px solid rgba(127,217,154,.5); color: #9FE0B0; white-space: nowrap; }
.chip.is-dev { border-color: rgba(240,208,119,.5); color: var(--gold-hi); }
.chip.is-test { border-color: rgba(120,170,255,.5); color: #A8C6FF; }

/* loader */
.loader { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; background: radial-gradient(60% 60% at 50% 45%, #0e0f16, #05060b 70%); transition: opacity 1.2s var(--ease), visibility 1.2s; text-align: center; padding: 24px; }
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__mark { position: relative; width: 74px; height: 74px; margin: 0 auto 26px; }
.loader__mark span { position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--gold); animation: spin 6s linear infinite; border-top-color: transparent; }
.loader__mark i { position: absolute; inset: 27px; border-radius: 50%; background: var(--gold-hi); box-shadow: 0 0 30px var(--gold), 0 0 80px rgba(240,208,119,.6); animation: pulse 2.4s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg) } } @keyframes pulse { 50% { transform: scale(.75); opacity: .7 } }
.loader__eyebrow { font: 500 12px var(--f-m); letter-spacing: .32em; color: var(--muted); margin: 0 0 12px; }
.loader__title { font: 600 clamp(44px, 8vw, 96px)/1 var(--f-d); letter-spacing: -.035em; color: var(--ivory); margin: 0 0 14px; }
.loader__sub { color: var(--muted); margin: 0 0 30px; }
.loader__bar { width: min(360px, 70vw); height: 2px; margin: 0 auto; background: rgba(255,255,255,.08); overflow: hidden; }
.loader__bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #C99A2E, #F0D077); transition: width .4s var(--ease); }
.loader__pct { font: 500 12px var(--f-m); color: var(--muted); letter-spacing: .2em; margin: 12px 0 26px; }

/* header */
.top { position: fixed; z-index: 30; left: 0; right: 0; top: 0; padding: 18px var(--g); display: flex; align-items: center; gap: 20px; pointer-events: none; }
.top > * { pointer-events: auto; }
.wm { display: inline-flex; align-items: center; gap: .05em; font: 700 21px/1 var(--f-d); letter-spacing: .13em; }
.wm .g { background-image: var(--metal); -webkit-background-clip: text; background-clip: text; color: transparent; }
.wm .s { background-image: var(--silver); -webkit-background-clip: text; background-clip: text; color: transparent; }
.wm svg { height: .72em; width: auto; overflow: visible; }
.wm line { stroke: var(--gold); stroke-width: 1.7; } .wm .o { fill: none; stroke: var(--gold); stroke-width: 1.7; } .wm .c { fill: var(--gold); }
.top__chapter { margin: 0 auto; font: 500 12px var(--f-m); letter-spacing: .24em; text-transform: uppercase; color: var(--muted); }
.top__nav { display: flex; gap: 8px; }

/* intro + finale (world overlays) */
.intro, .finale { position: fixed; z-index: 10; left: var(--g); right: var(--g); bottom: 12vh; max-width: 980px; pointer-events: none; transition: opacity .9s var(--ease), transform .9s var(--ease); }
.intro.is-off, .finale.is-off { opacity: 0; transform: translateY(30px); }
.intro__title, .finale__title { font: 600 clamp(46px, 7.6vw, 118px)/.95 var(--f-d); letter-spacing: -.045em; color: var(--ivory); margin: 0 0 24px; text-shadow: 0 6px 60px rgba(0,0,0,.6); }
.intro__title span { display: block; }
.intro__sub, .finale__sub { font-size: clamp(16px, 1.5vw, 20px); max-width: 52ch; color: #C9CDD4; margin: 0 0 26px; text-shadow: 0 2px 20px rgba(0,0,0,.8); }
.intro__sub b { color: var(--gold-hi); font-weight: 600; }
.intro__keys { display: flex; flex-wrap: wrap; gap: 18px; font: 500 12.5px var(--f-b); color: var(--muted); }
.intro__keys span { display: inline-flex; gap: 8px; align-items: center; }
.finale { pointer-events: auto; }
.finale.is-off { pointer-events: none; }
.finale__btns { display: flex; flex-wrap: wrap; gap: 10px; }

/* chapter card */
.chapter { position: fixed; z-index: 12; left: 0; right: 0; top: 30vh; text-align: center; pointer-events: none; opacity: 0; }
.chapter__n { display: block; font: 500 14px var(--f-m); letter-spacing: .4em; color: var(--gold-hi); margin-bottom: 10px; }
.chapter__t { display: block; font: 600 clamp(54px, 10vw, 150px)/.9 var(--f-d); letter-spacing: -.05em; color: var(--ivory); text-shadow: 0 8px 80px rgba(0,0,0,.7); }
.chapter__d { display: block; font: 400 clamp(22px, 2.4vw, 32px) var(--f-s); font-style: italic; color: var(--gold-hi); margin-top: 10px; }

/* HUD */
.hud { position: fixed; z-index: 14; left: var(--g); bottom: 6vh; width: min(560px, calc(100vw - 2 * var(--g))); padding: 26px 28px; border-radius: 22px;
  background: linear-gradient(160deg, rgba(14,15,22,.78), rgba(6,7,11,.7)); border: 1px solid rgba(240,208,119,.18); backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 40px 120px rgba(0,0,0,.55); opacity: 0; transform: translateY(24px); pointer-events: none; transition: opacity .6s var(--ease), transform .7s var(--ease); }
.hud.is-on { opacity: 1; transform: none; pointer-events: auto; }
.hud__row { display: flex; align-items: baseline; gap: 10px; font: 500 12px var(--f-m); letter-spacing: .18em; color: var(--muted); text-transform: uppercase; }
.hud__n { font: 600 28px var(--f-d); letter-spacing: -.02em; color: var(--gold-hi); }
.hud__ch { margin-left: auto; color: var(--gold-hi); }
.hud__name { font: 600 clamp(32px, 3.4vw, 50px)/1 var(--f-d); letter-spacing: -.035em; color: var(--ivory); margin: 12px 0 10px; }
.hud__tag { margin: 0 0 16px; color: #C3C8CF; font-size: 16.5px; }
.hud__meta { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 20px; }
.hud__kind { font: 500 12px var(--f-m); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.hud__btns { display: flex; gap: 10px; flex-wrap: wrap; }
.hud__btns .btn { height: 46px; padding: 0 20px; }

/* map + rail */
.map { position: fixed; z-index: 14; right: var(--g); bottom: 6vh; width: 210px; text-align: center; }
.map svg { width: 210px; height: 210px; overflow: visible; }
.map__lab { font: 500 10px var(--f-m); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.map .path { fill: none; stroke: rgba(240,208,119,.35); stroke-width: 2; }
.map .dot { fill: #0d0e13; stroke: rgba(240,208,119,.7); stroke-width: 2; cursor: pointer; transition: fill .3s; }
.map .dot:hover, .map .dot.is-on { fill: var(--gold-hi); }
.map .sun { fill: #F0B444; filter: drop-shadow(0 0 8px #F0B444); }
.map .me { fill: #fff; filter: drop-shadow(0 0 6px #fff); }
.rail { position: fixed; z-index: 14; left: 10px; top: 20vh; bottom: 20vh; width: 2px; background: rgba(255,255,255,.08); border-radius: 2px; }
.rail i { position: absolute; left: 0; top: 0; width: 100%; height: 0; background: linear-gradient(180deg, #C99A2E, #F0D077); border-radius: 2px; }

/* walk mode */
.walkhelp { position: fixed; z-index: 20; left: 50%; bottom: 4vh; transform: translateX(-50%); display: none; gap: 18px; align-items: center; padding: 12px 14px 12px 22px; border-radius: 999px; background: rgba(8,9,14,.72); border: 1px solid rgba(255,255,255,.1); backdrop-filter: blur(14px); font-size: 13px; color: var(--muted); white-space: nowrap; }
.walkhelp span { display: inline-flex; gap: 8px; align-items: center; }
.walkgo { display: none; position: fixed; z-index: 21; right: var(--g); bottom: 14vh; width: 92px; height: 92px; border-radius: 50%; background: rgba(240,208,119,.15); border: 1px solid rgba(240,208,119,.6); color: var(--gold-hi); font: 600 12px var(--f-b); }
body.is-walking .walkhelp { display: flex; }
body.is-walking .hud, body.is-walking .map, body.is-walking .rail, body.is-walking .intro, body.is-walking .finale { opacity: 0 !important; pointer-events: none !important; }
body.is-walking #world { cursor: grab; } body.is-walking.is-dragging #world { cursor: grabbing; }
@media (hover: none) { body.is-walking .walkgo { display: block; } body.is-walking .walkhelp span { display: none; } }

/* case viewer */
.case { position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; visibility: hidden; pointer-events: none; }
.case.is-open { visibility: visible; pointer-events: auto; }
.case__bg { position: absolute; inset: 0; background: rgba(4,5,9,.82); backdrop-filter: blur(18px); opacity: 0; transition: opacity .5s; }
.case.is-open .case__bg { opacity: 1; }
.case__in { position: relative; width: min(1440px, 96vw); max-height: 92vh; display: grid; grid-template-columns: 1.7fr 1fr; gap: 40px; align-items: center; padding: 30px; opacity: 0; transform: translateY(40px) scale(.98); transition: opacity .6s var(--ease), transform .7s var(--ease); }
.case.is-open .case__in { opacity: 1; transform: none; }
.case__x { position: absolute; right: 8px; top: -6px; width: 46px; height: 46px; border-radius: 50%; background: rgba(255,255,255,.07); font-size: 16px; z-index: 3; }
.case__x:hover { background: rgba(240,208,119,.2); }
.case__stage { position: relative; }
.browser { border-radius: 16px; overflow: hidden; background: #0b0c10; border: 1px solid rgba(255,255,255,.1); box-shadow: 0 60px 160px rgba(0,0,0,.8), 0 0 120px rgba(212,175,55,.1); }
.browser__bar { height: 44px; display: flex; align-items: center; gap: 8px; padding: 0 16px; background: #111217; border-bottom: 1px solid rgba(255,255,255,.06); }
.browser__bar > i { width: 11px; height: 11px; border-radius: 50%; background: #2A2C33; }
.browser__url { margin-left: 14px; flex: 1; height: 28px; border-radius: 99px; background: #0A0B0E; border: 1px solid rgba(255,255,255,.07); display: flex; align-items: center; justify-content: center; gap: 8px; font: 500 13px var(--f-b); color: #C2C8D0; }
.browser__url b { color: var(--gold); font-weight: 500; }
.browser__vp { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #000; }
.browser__vp img { position: absolute; left: 0; top: 0; width: 100%; height: auto; will-change: transform; }
.browser__vp video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: none; }
.case.is-video .browser__vp video { display: block; } .case.is-video .browser__vp img { display: none; }
.browser__prog { height: 2px; background: rgba(255,255,255,.06); } .browser__prog i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #C99A2E, #F0D077); }
.phone { position: absolute; right: -26px; bottom: -40px; width: 22%; aspect-ratio: 390 / 844; border-radius: 34px; overflow: hidden; background: #000; border: 3px solid #2B2D34; box-shadow: 0 0 0 7px #0E0F13, 0 0 0 8px #3A3C44, 0 40px 100px rgba(0,0,0,.9); }
.phone img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.phone__notch { position: absolute; z-index: 1; left: 50%; top: 8px; width: 34%; height: 18px; transform: translateX(-50%); border-radius: 12px; background: #000; }
.case__n { font: 500 12px var(--f-m); letter-spacing: .2em; text-transform: uppercase; color: var(--gold-hi); margin: 0 0 12px; }
.case__name { font: 600 clamp(36px, 3.6vw, 60px)/1 var(--f-d); letter-spacing: -.04em; color: var(--ivory); margin: 0 0 12px; }
.case__tag { font: 400 22px/1.3 var(--f-s); font-style: italic; color: var(--gold-hi); margin: 0 0 16px; }
.case__desc { color: #C3C8CF; margin: 0 0 22px; }
.case__facts { display: grid; grid-template-columns: auto 1fr; gap: 10px 18px; margin: 0 0 26px; font-size: 14.5px; }
.case__facts dt { font: 500 11px/1.9 var(--f-m); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.case__facts dd { margin: 0; color: var(--ivory); }
.case__btns { display: flex; gap: 10px; flex-wrap: wrap; }
.case__nav { display: flex; justify-content: space-between; margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); font: 500 13px var(--f-m); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.case__nav button:hover { color: var(--gold-hi); }

/* index */
.index { position: fixed; inset: 0; z-index: 35; background: rgba(5,6,11,.94); backdrop-filter: blur(20px); overflow-y: auto; visibility: hidden; opacity: 0; transition: opacity .5s, visibility .5s; padding: 90px var(--g) 60px; }
.index.is-open { visibility: visible; opacity: 1; }
.index__head { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 30px; max-width: 1500px; margin: 0 auto 30px; position: relative; }
.index__head h2 { font: 600 clamp(36px, 5vw, 70px)/1 var(--f-d); letter-spacing: -.04em; color: var(--ivory); margin: 0; }
.index__head h2 span { font: 500 16px var(--f-m); color: var(--gold-hi); letter-spacing: .1em; vertical-align: super; }
.index__filters { display: flex; flex-wrap: wrap; gap: 8px; }
.index__head .case__x { position: absolute; right: 0; top: 0; }
.index__grid { max-width: 1500px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 22px; }
.card { position: relative; border-radius: 18px; overflow: hidden; background: #0c0d12; border: 1px solid rgba(255,255,255,.08); cursor: pointer; transition: transform .6s var(--ease), border-color .4s, box-shadow .5s; text-align: left; }
.card:hover { transform: translateY(-6px); border-color: rgba(240,208,119,.45); box-shadow: 0 40px 80px -30px rgba(0,0,0,.9), 0 0 60px -20px rgba(240,208,119,.3); }
.card__vp { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #000; }
.card__vp img { position: absolute; left: 0; top: 0; width: 100%; height: auto; transition: transform 6s linear; }
.card:hover .card__vp img.is-tall { transform: translateY(calc(-100% + 100cqh)); }
.card__vp { container-type: size; }
.card__body { padding: 18px 20px 20px; }
.card__top { display: flex; justify-content: space-between; align-items: center; gap: 10px; font: 500 11px var(--f-m); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.card h3 { font: 600 24px/1.1 var(--f-d); letter-spacing: -.02em; color: var(--ivory); margin: 0 0 6px; }
.card p { margin: 0; font-size: 14px; color: #A8AEB7; }
.card.is-hidden { display: none; }

.nojs { padding: 60px 24px; color: var(--ivory); }

@media (max-width: 1100px) {
  .case__in { grid-template-columns: 1fr; overflow-y: auto; max-height: 94vh; gap: 54px; }
  .phone { width: 26%; right: -8px; }
  .top__chapter { display: none; }
}
@media (max-width: 760px) {
  .top { padding: 12px 14px; flex-wrap: wrap; }
  .wm { font-size: 17px; }
  .top__nav { width: 100%; overflow-x: auto; }
  .top__nav .pill span { display: none; } .top__nav .pill--gold span { display: inline; }
  .map { display: none; }
  .hud { left: 12px; right: 12px; width: auto; bottom: 12px; padding: 18px 18px; }
  .hud__tag { font-size: 14.5px; }
  .intro, .finale { bottom: 10vh; }
  .intro__keys { display: none; }
  .case__in { padding: 18px; }
  .index { padding-top: 80px; }
}
@media (prefers-reduced-motion: reduce) { .grain { display: none; } }