:root {
  --dark-walnut: #2a2118;
  --warm-cream: #faf3e6;
  --toasted-oat: #ede0c8;
  --honeyed-gold: #c9a96e;
  --amber-glow: #e8b84d;
  --espresso: #3d3225;
  --warm-umber: #8a7656;
  --brown-charcoal: #5a4e3c;
  --pale-honey: #f5dfa8;
  --display: "Dela Gothic One", "Space Grotesk", sans-serif;
  --subhead: "Space Grotesk", "Inter", sans-serif;
  --body: "Noto Sans KR", "Inter", sans-serif;
  --bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* IntersectionObserver` adding a `.visible` class. Two blocks span 2 columns for asymmetric visual interest. IntersectionObserver` for Zone 2 block reveals. No libraries Space Grotesk: "senggack.xyz" in `#c9a96e`. The text has no interaction — it simply exists as a closing meditation. `animation: fade-in 2s ease both` with appropriate delays. Set at `clamp(0.95rem (Google Fonts */

* {
  box-sizing: border-box;
}

html {
  background: var(--dark-walnut);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--warm-cream);
  color: var(--brown-charcoal);
  font-family: var(--body);
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  line-height: 1.75;
  overflow-x: hidden;
}

::selection {
  background: var(--pale-honey);
  color: var(--espresso);
}

.page-loader {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: var(--dark-walnut);
  transition: opacity 0.65s ease, visibility 0.65s ease;
}

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.taegeuk-loader {
  width: 84px;
  height: 84px;
  position: relative;
  border-radius: 50%;
  background: linear-gradient(90deg, var(--honeyed-gold) 0 50%, var(--espresso) 50% 100%);
  border: 3px solid var(--pale-honey);
  box-shadow: 6px 6px 0 var(--espresso), 0 0 48px rgba(201, 169, 110, 0.24);
  animation: loader-spin 1.2s linear infinite;
}

.taegeuk-loader::before,
.taegeuk-loader::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.taegeuk-loader::before {
  top: 0;
  background: var(--espresso);
}

.taegeuk-loader::after {
  bottom: 0;
  background: var(--honeyed-gold);
}

.zone {
  min-height: 100vh;
  position: relative;
}

.hero-zone {
  min-height: 100svh;
  padding: clamp(16px, 3vw, 40px);
  background: var(--dark-walnut);
}

.screen-frame {
  min-height: calc(100svh - (clamp(16px, 3vw, 40px) * 2));
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  border: 2px solid var(--honeyed-gold);
  border-radius: 24px;
  background:
    radial-gradient(circle at 18% 22%, rgba(232, 184, 77, 0.18), transparent 24%),
    radial-gradient(circle at 78% 70%, rgba(245, 223, 168, 0.12), transparent 28%),
    linear-gradient(135deg, #2a2118 0%, #3d3225 62%, #2a2118 100%);
  box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.22), 8px 8px 0 #3d3225;
}

.screen-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  background: repeating-linear-gradient(transparent, transparent 2px, rgba(42, 33, 24, 0.03) 2px, rgba(42, 33, 24, 0.03) 4px);
  mix-blend-mode: screen;
}

.screen-frame::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(201, 169, 110, 0.16);
  border-radius: 18px;
  pointer-events: none;
}

.hangul-watermark {
  position: absolute;
  inset: auto auto 5% 50%;
  transform: translateX(-50%);
  z-index: 0;
  color: var(--pale-honey);
  font-family: var(--display);
  font-size: 40vw;
  line-height: 0.8;
  opacity: 0.04;
  white-space: nowrap;
}

.hero-copy {
  position: relative;
  z-index: 3;
  text-align: center;
  animation: bounce-enter 0.8s var(--bounce) both;
}

.hero-label,
.section-kicker,
.domain-line,
.block-subtitle {
  margin: 0;
  font-family: var(--subhead);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-label {
  margin-bottom: clamp(0.8rem, 2vw, 1.4rem);
  color: var(--pale-honey);
  opacity: 0.72;
}

h1,
h2,
h3,
.meditation-line {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

h1 {
  color: var(--honeyed-gold);
  font-size: clamp(5rem, 14vw, 12rem);
  text-shadow: 4px 4px 0 var(--espresso), 8px 8px 0 rgba(0, 0, 0, 0.18), 0 0 42px rgba(232, 184, 77, 0.22);
}

.hero-hangul {
  margin: clamp(1rem, 2vw, 1.8rem) 0 0;
  color: var(--warm-umber);
  font-family: var(--subhead);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 500;
  letter-spacing: 0.18em;
}

.cube-field {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  perspective: 800px;
}

.thought-cube {
  --size: 120px;
  position: absolute;
  width: var(--size);
  height: var(--size);
  transform-style: preserve-3d;
  animation: thought-spin 20s linear infinite;
}

.thought-cube .face {
  position: absolute;
  inset: 0;
  display: block;
  border: 2px solid rgba(42, 33, 24, 0.22);
  box-shadow: inset 0 0 24px rgba(42, 33, 24, 0.16);
}

.front { background: #faf3e6; transform: translateZ(calc(var(--size) / 2)); }
.back { background: #8a7656; transform: rotateY(180deg) translateZ(calc(var(--size) / 2)); }
.right { background: #ede0c8; transform: rotateY(90deg) translateZ(calc(var(--size) / 2)); }
.left { background: #c9a96e; transform: rotateY(-90deg) translateZ(calc(var(--size) / 2)); }
.top { background: #f5dfa8; transform: rotateX(90deg) translateZ(calc(var(--size) / 2)); }
.bottom { background: #3d3225; transform: rotateX(-90deg) translateZ(calc(var(--size) / 2)); }

.cube-small {
  --size: 80px;
  top: 19%;
  left: 14%;
  animation-duration: 15s;
}

.cube-medium {
  --size: 120px;
  right: 16%;
  top: 16%;
  animation-duration: 20s;
  animation-direction: reverse;
}

.cube-large {
  --size: 200px;
  right: 12%;
  bottom: 11%;
  animation-duration: 28s;
  opacity: 0.9;
}

.grid-zone {
  padding: clamp(72px, 10vw, 140px) clamp(18px, 5vw, 72px);
  background:
    linear-gradient(90deg, rgba(201, 169, 110, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(201, 169, 110, 0.08) 1px, transparent 1px),
    var(--warm-cream);
  background-size: 44px 44px;
}

.grid-intro {
  max-width: 980px;
  margin: 0 auto clamp(42px, 6vw, 74px);
}

.section-kicker {
  color: var(--warm-umber);
  font-size: clamp(0.8rem, 1.1vw, 0.96rem);
}

h2 {
  max-width: 900px;
  margin-top: 0.55rem;
  color: var(--espresso);
  font-size: clamp(2rem, 5vw, 4rem);
}

.thought-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(24px, 4vw, 48px);
  align-items: stretch;
}

.thought-block {
  position: relative;
  min-height: 280px;
  padding: clamp(24px, 3vw, 38px);
  overflow: hidden;
  border: 2px solid var(--honeyed-gold);
  border-radius: 12px;
  background:
    repeating-linear-gradient(90deg, var(--honeyed-gold) 0 8px, var(--amber-glow) 8px 16px) top left / 100% 10px no-repeat,
    linear-gradient(145deg, var(--toasted-oat), var(--warm-cream));
  box-shadow: 4px 4px 0 #3d3225;
  opacity: 0;
  transform: translateY(34px) scale(0.96);
  transition: transform 0.45s var(--bounce), box-shadow 0.45s var(--bounce), background 0.45s ease;
}

.thought-block::after {
  content: "";
  position: absolute;
  right: -54px;
  bottom: -54px;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 223, 168, 0.8), rgba(201, 169, 110, 0.08) 62%, transparent 63%);
}

.thought-block.visible {
  animation: bounce-enter 0.6s var(--bounce) both;
  animation-delay: var(--delay, 0s);
}

.thought-block:hover {
  transform: translateY(-6px);
  box-shadow: 10px 10px 0 #3d3225;
  background:
    repeating-linear-gradient(90deg, var(--amber-glow) 0 8px, var(--honeyed-gold) 8px 16px) top left / 100% 10px no-repeat,
    linear-gradient(145deg, #f5dfa8, #ede0c8);
}

.block-wide {
  grid-column: span 2;
}

.block-tall {
  min-height: 380px;
}

.block-index {
  color: var(--honeyed-gold);
  font-family: var(--subhead);
  font-weight: 700;
  letter-spacing: 0.04em;
}

h3 {
  margin-top: clamp(32px, 5vw, 64px);
  color: var(--espresso);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.block-subtitle {
  margin-top: 0.45rem;
  color: var(--warm-umber);
  font-size: 1rem;
}

.thought-block p:last-child {
  position: relative;
  z-index: 1;
  margin: 1.1rem 0 0;
  color: var(--brown-charcoal);
  font-weight: 400;
}

.silence-zone {
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(201, 169, 110, 0.12), transparent 38%),
    var(--dark-walnut);
}

.silence-zone::before {
  content: "생각";
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  color: var(--pale-honey);
  font-family: var(--display);
  font-size: 34vw;
  opacity: 0.035;
  line-height: 1;
}

.silence-copy {
  position: relative;
  z-index: 1;
  width: min(1040px, calc(100% - 36px));
  text-align: center;
}

.meditation-line {
  color: var(--pale-honey);
  font-size: clamp(2rem, 5vw, 4rem);
  opacity: 0;
}

.domain-line {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--honeyed-gold);
  font-size: clamp(1rem, 2vw, 1.35rem);
  opacity: 0;
  text-transform: none;
}

.silence-zone.visible .meditation-line {
  animation: fade-in 2s ease 1s both;
}

.silence-zone.visible .domain-line {
  animation: fade-in 2s ease 2s both;
}

@keyframes thought-spin {
  from { transform: rotateY(0deg) rotateX(15deg); }
  to { transform: rotateY(360deg) rotateX(15deg); }
}

@keyframes bounce-enter {
  0% { transform: scale(0.3) translateY(40px); opacity: 0; }
  60% { transform: scale(1.05) translateY(-8px); opacity: 1; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes loader-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 760px) {
  .block-wide,
  .block-tall {
    grid-column: auto;
    min-height: 280px;
  }

  .cube-large {
    --size: 132px;
    right: -10px;
    bottom: 10%;
  }

  .cube-medium {
    --size: 88px;
    right: 9%;
    top: 13%;
  }

  .cube-small {
    --size: 62px;
    left: 7%;
  }
}