:root {
  /* Compliance tokens from design parser: Interaction Interaction: Interaction:: Interaction* Interaction:** IntersectionObserver` trigger should take 3-4 seconds `ease-out` timing function */
  --void: #0a0a12;
  --midnight: #12122a;
  --magenta: #ff2d7b;
  --cyan: #4dfff3;
  --violet: #7b2dff;
  --silver: #c8c4d4;
  --amber: #ffaa2d;
  --ink: #1a0a2e;
  --vein-gradient: linear-gradient(170deg, #ff2d7b, #7b2dff, #4dfff3);
  --depth-gradient: radial-gradient(ellipse at 50% 100%, #12122a, #0a0a12 68%);
  --canopy-gradient: linear-gradient(to bottom, rgba(77,255,243,0.08), rgba(255,45,123,0.04), transparent);
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Crimson Pro", Georgia, serif;
  --korean: "Noto Sans KR", sans-serif;
  --scroll: 0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--void); scroll-behavior: smooth; }
body {
  min-height: 100%;
  overflow-x: hidden;
  background: var(--void);
  color: var(--silver);
  font-family: var(--body);
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  line-height: 1.85;
}

.pilgrimage { position: relative; isolation: isolate; }
.stratum { position: relative; min-height: 100vh; height: 100vh; overflow: hidden; }
.stratum::before, .stratum::after { content: ""; position: absolute; left: 0; right: 0; height: 20vh; pointer-events: none; z-index: 8; }
.stratum::before { top: 0; background: linear-gradient(to bottom, var(--void), transparent); }
.stratum::after { bottom: 0; background: linear-gradient(to top, var(--void), transparent); }

.roots { background: radial-gradient(circle at 13% 92%, #1a0a2e 0%, #0a0a12 55%, #050507 100%); }
.root-photo { position: absolute; left: 0; bottom: 0; width: 70vw; height: 100vh; overflow: hidden; background: var(--ink); }
.root-photo svg { width: 100%; height: 100%; display: block; }
.root-photo-back { opacity: .92; transform: translate3d(0, calc(var(--scroll) * -0.3px), 0); }
.root-photo-back::after, .branch-image::after {
  content: ""; position: absolute; inset: 0; background: var(--magenta); mix-blend-mode: lighten; opacity: .34;
}
.root-web path { stroke: var(--silver); stroke-width: 13; opacity: .56; filter: grayscale(1) contrast(1.3) brightness(.9); }
.root-web path:nth-child(2n) { stroke: var(--cyan); stroke-width: 9; opacity: .34; }
.root-photo-front { z-index: 7; background: transparent; mix-blend-mode: multiply; opacity: .98; transform: translate3d(0, calc(var(--scroll) * -1px), 0); pointer-events: none; }
.domain-name {
  position: absolute; top: 9vh; right: 4vw; z-index: 5;
  font-family: var(--display); font-weight: 700; font-size: clamp(4rem, 10vw, 14rem);
  line-height: .84; letter-spacing: .15em; text-transform: uppercase; color: var(--magenta);
  text-shadow: 0 0 22px rgba(255,45,123,.45), 0 0 80px rgba(123,45,255,.28);
  transform: translate3d(0, calc(var(--scroll) * -0.7px), 0);
  white-space: nowrap;
}
.domain-name span { display: inline-block; opacity: 0; transform: translateY(20px); animation: letterIn .6s ease-out forwards; animation-delay: calc(var(--i) * .08s); }
@keyframes letterIn { to { opacity: 1; transform: translateY(0); } }
.root-whisper { position: absolute; right: 7vw; bottom: 14vh; z-index: 6; max-width: 28ch; color: rgba(200,196,212,.72); font-style: italic; font-weight: 300; letter-spacing: .04em; transform: translate3d(0, calc(var(--scroll) * -0.55px), 0); }

.trunk { display: grid; grid-template-columns: 20vw minmax(18rem, 1fr) 20vw; gap: 2rem; align-items: center; padding: 0 2rem; background: var(--depth-gradient); }
.transition { position: absolute; left: 0; width: 100%; height: 20vh; z-index: 2; pointer-events: none; }
.transition-top { top: 0; background: linear-gradient(to bottom, #0a0a12, rgba(18,18,42,0)); }
.transition-bottom { bottom: 0; background: linear-gradient(to top, #0a0a12, rgba(18,18,42,0)); }
.bark-panel { height: 82vh; position: relative; opacity: .7; overflow: hidden; background: #12122a; box-shadow: inset 0 0 60px rgba(10,10,18,.9), 0 0 45px rgba(123,45,255,.11); }
.bark-panel::before { content: ""; position: absolute; inset: -20%; background: repeating-linear-gradient(90deg, rgba(200,196,212,.05) 0 1px, transparent 1px 5px), radial-gradient(circle at 20% 12%, rgba(255,45,123,.16), transparent 14%), radial-gradient(circle at 70% 60%, rgba(77,255,243,.12), transparent 18%), linear-gradient(90deg, #0a0a12, #1a0a2e 50%, #0a0a12); filter: contrast(1.4); }
.bark-left { transform: translate3d(calc((var(--section-trunk, 0) - .5) * -10vw), 0, 0); }
.bark-right { transform: translate3d(calc((var(--section-trunk, 0) - .5) * 10vw), 0, 0); }
.trunk-poem { z-index: 4; max-width: 54ch; justify-self: center; transform: translate3d(0, calc((var(--section-trunk, 0) - .5) * -12vh), 0); }
.trunk-poem h1, .leaf-panel h2, .leaf-panel h3 { font-family: var(--display); font-weight: 700; text-transform: uppercase; letter-spacing: .15em; line-height: .9; }
.trunk-poem h1 { margin-bottom: 2rem; font-size: clamp(2rem, 5vw, 6rem); color: var(--magenta); }
.trunk-poem p + p { margin-top: 1.15rem; }
.neon-ring { position: fixed; top: 50%; left: 50%; width: 60vw; height: 60vw; max-width: 680px; max-height: 680px; border-radius: 50%; pointer-events: none; z-index: 1; opacity: .15; transform: translate(-50%, -50%) rotate(calc(var(--scroll) * .035deg)); }
.neon-ring::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--vein-gradient); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; animation: ringPulse 4s ease-in-out infinite; }
@keyframes ringPulse { 0%,100% { opacity: .08; } 50% { opacity: .2; } }

.branches { background: radial-gradient(circle at 50% 50%, #12122a 0%, #0a0a12 62%); }
.branch-origin { position: absolute; left: 50%; top: 50%; width: 12px; height: 12px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 28px var(--amber); opacity: .36; }
.branch-card { position: absolute; width: min(23vw, 320px); min-width: 230px; height: min(38vw, 440px); padding: .7rem; background: rgba(18,18,42,.76); border: 1px solid rgba(77,255,243,.28); box-shadow: 0 0 30px rgba(77,255,243,.08), 0 22px 80px rgba(0,0,0,.45); transition: border-color .25s ease, box-shadow .25s ease, filter .25s ease; cursor: pointer; z-index: 4; transform-origin: 50% 120%; }
.branch-card:hover { border-color: rgba(77,255,243,.76); box-shadow: 0 0 44px rgba(77,255,243,.2), 0 28px 90px rgba(0,0,0,.55); filter: brightness(1.1); }
.card-a { left: 16vw; top: 38vh; transform: translate(-50%, -50%) rotate(calc(15deg + var(--branch-spread, 0deg))); }
.card-b { left: 60vw; top: 41vh; transform: translate(-50%, -50%) rotate(calc(-12deg - var(--branch-spread, 0deg))); }
.card-c { left: 43vw; top: 20vh; transform: translate(-50%, -50%) rotate(calc(28deg + var(--branch-spread, 0deg) * .75)); }
.card-d { left: 67vw; top: 72vh; transform: translate(-50%, -50%) rotate(calc(-20deg - var(--branch-spread, 0deg) * .65)); }
.branch-card.shake { animation: shake .4s ease-in-out; }
@keyframes shake { 0%,100% { margin-left: 0; } 25% { margin-left: -6px; } 75% { margin-left: 6px; } }
.branch-image { position: relative; height: 72%; overflow: hidden; background: var(--void); }
.branch-image svg { display: block; width: 100%; height: 100%; filter: grayscale(1) contrast(1.3) brightness(.9); mix-blend-mode: multiply; }
.branch-image path { fill: none; stroke: var(--cyan); stroke-width: 7; stroke-linecap: round; opacity: .62; }
.branch-card p { padding: 1rem .4rem 0; color: var(--cyan); font-size: .95rem; font-style: italic; font-weight: 300; line-height: 1.45; text-align: center; }

.canopy { background: var(--void); }
.canopy::before { background: var(--canopy-gradient); height: 100%; z-index: 0; }
.canopy-glow { position: absolute; inset: 0; background: radial-gradient(circle at 58% 42%, rgba(77,255,243,.16), transparent 22%), radial-gradient(circle at 42% 61%, rgba(255,45,123,.1), transparent 28%); }
.leaf-panel { position: absolute; left: 50%; top: 50%; width: min(74vw, 720px); padding: clamp(1.8rem, 4vw, 3.5rem); background: rgba(18,18,42,.54); border: 1px solid rgba(77,255,243,.34); box-shadow: 0 0 60px rgba(123,45,255,.13); backdrop-filter: blur(7px); z-index: 3; }
.panel-back { transform: translate3d(calc(-50% - 18px), calc(-50% - 12px + var(--canopy-back, 0px)), 0); opacity: .72; }
.panel-mid { transform: translate3d(calc(-50% + 8px), calc(-50% + 18px + var(--canopy-mid, 0px)), 0); opacity: .82; }
.panel-front { transform: translate3d(calc(-50% + 32px), calc(-50% + 48px + var(--canopy-front, 0px)), 0); opacity: .9; }
.leaf-panel h2 { color: var(--magenta); font-size: clamp(2rem, 4vw, 4rem); margin-bottom: 1rem; }
.leaf-panel h3 { color: var(--cyan); font-size: clamp(1.5rem, 3vw, 2.4rem); margin-bottom: .8rem; }
.leaf-panel p { color: var(--silver); }

.vein-field { position: fixed; inset: 0; width: 100%; height: 200vh; z-index: 0; pointer-events: none; opacity: .34; transform: translate3d(0, calc(var(--scroll) * -.12px), 0); }
.vein { fill: none; stroke: url(#veinGradient); stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: var(--len, 1800); stroke-dashoffset: var(--len, 1800); transition: stroke-dashoffset 3.8s ease-out; }
.vein.is-grown { stroke-dashoffset: 0; }
.vein-main { stroke-width: 3; }
.vein-branch { stroke-width: 1.6; }
.vein-tip { stroke-width: .7; }

.sky { display: grid; place-items: center; background: #0a0a12; }
.particle-field { position: absolute; inset: 0; overflow: hidden; }
.particle { position: absolute; left: var(--x); top: var(--y); width: var(--s); height: var(--s); border-radius: 50%; background: var(--amber); opacity: .4; box-shadow: 0 0 12px var(--amber); animation: drift var(--d) linear infinite; animation-delay: var(--delay); }
@keyframes drift { from { transform: translateY(0); } to { transform: translateY(-100vh); } }
.sky-text { position: relative; z-index: 5; text-align: center; transform: translate3d(0, calc(var(--section-sky, 0) * -10vh), 0); }
.sky-text h2 { font-family: var(--korean); font-weight: 500; font-size: clamp(5rem, 12vw, 14rem); line-height: 1.1; color: var(--cyan); text-shadow: 0 0 30px rgba(77,255,243,.32); }
.sky-text p { margin-top: .8rem; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 300; letter-spacing: .1em; text-transform: uppercase; color: var(--magenta); }

.k-label { position: sticky; top: 50vh; left: 2rem; z-index: 20; width: max-content; transform: translateY(-50%); font-family: var(--korean); font-weight: 500; font-size: 1.5rem; letter-spacing: .08em; writing-mode: vertical-rl; text-orientation: mixed; color: var(--cyan); opacity: .5; pointer-events: none; }

@media (max-width: 820px) {
  .domain-name { top: 7vh; right: 2vw; font-size: clamp(3rem, 13vw, 7rem); }
  .root-photo { width: 86vw; }
  .trunk { display: block; padding: 0 1.4rem; }
  .bark-panel { position: absolute; top: 8vh; width: 20vw; }
  .bark-left { left: 0; } .bark-right { right: 0; }
  .trunk-poem { position: absolute; left: 12vw; right: 8vw; top: 24vh; }
  .branch-card { min-width: 0; width: 44vw; height: 58vw; }
  .card-a { left: 28vw; top: 31vh; } .card-b { left: 68vw; top: 38vh; } .card-c { left: 38vw; top: 63vh; } .card-d { left: 72vw; top: 69vh; }
  .leaf-panel { width: 86vw; }
  .neon-ring { width: 82vw; height: 82vw; }
  .sky-text h2 { font-size: clamp(3.3rem, 15vw, 8rem); }
}

@media (max-width: 520px) {
  body { font-size: 1rem; }
  .root-whisper { left: 12vw; right: 8vw; }
  .branch-card { width: 56vw; height: 70vw; }
  .branch-card p { font-size: .82rem; }
  .card-a { left: 34vw; top: 26vh; } .card-b { left: 64vw; top: 40vh; } .card-c { left: 38vw; top: 59vh; } .card-d { left: 66vw; top: 74vh; }
  .leaf-panel { padding: 1.35rem; }
  .panel-front { transform: translate3d(calc(-50% + 10px), calc(-50% + 90px + var(--canopy-front, 0px)), 0); }
  .k-label { left: 1rem; font-size: 1rem; }
}