:root {
  --color-bg: #0b0b0b;
  --color-surface: rgba(255, 255, 255, 0.04);
  --color-surface-strong: rgba(255, 255, 255, 0.06);
  --color-border: rgba(243, 238, 223, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.1);
  --color-text-primary: #f3eedf;
  --color-text-secondary: #d8cdba;
  --color-accent-teal: #6f8f8b;
  --color-accent-burgundy: #6e2c2c;
  --color-accent-gold: #b89a5d;

  --shadow-panel: 0 20px 60px rgba(0, 0, 0, 0.35);
  --shadow-floating: 0 16px 34px rgba(0, 0, 0, 0.28);
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.22);

  --layout-max-width: 1280px;
  --layout-section-padding: 120px;
  --layout-header-height: 61px;
  --layout-content-gap: 40px;
  --layout-side-padding: 24px;

  --radius-pill: 999px;
  --radius-lg: 30px;
  --radius-md: 28px;
  --radius-sm: 20px;
  --radius-xs: 18px;

  --motion-slow: 22s;
  --motion-medium: 16s;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "AppleMyungjo", "Batang", "Malgun Gothic", serif;
  color: var(--color-text-primary);
  line-height: 1.65;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 20% 10%, rgba(111, 143, 139, 0.1), transparent 28%),
    radial-gradient(circle at 80% 18%, rgba(110, 44, 44, 0.14), transparent 24%),
    linear-gradient(180deg, #090909 0%, #101010 45%, var(--color-bg) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 120px 120px;
  mix-blend-mode: soft-light;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }

.ambient-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-background::before,
.ambient-background::after {
  content: "";
  position: absolute;
  width: 56vw;
  height: 56vw;
  border-radius: 50%;
  filter: blur(56px);
  opacity: 0.24;
  animation: ambientDrift 18s ease-in-out infinite alternate;
}

.ambient-background::before {
  top: -14vw;
  left: -6vw;
  background: radial-gradient(circle, rgba(111, 143, 139, 0.3), transparent 62%);
}

.ambient-background::after {
  top: 14vh;
  right: -8vw;
  background: radial-gradient(circle, rgba(110, 44, 44, 0.28), transparent 62%);
  animation-duration: var(--motion-slow);
  animation-direction: alternate-reverse;
}

.ambient-background__noise,
.ambient-background__curtain {
  position: absolute;
  inset: 0;
}

.ambient-background__noise {
  opacity: 0.065;
  background-image: radial-gradient(rgba(255, 255, 255, 0.32) 0.7px, transparent 0.7px);
  background-size: 16px 16px;
  animation: ambientGrain 9s linear infinite;
}

.ambient-background__curtain {
  inset: -10% 0;
  opacity: 0.16;
  filter: blur(24px);
  background:
    linear-gradient(90deg, transparent 0%, rgba(111, 143, 139, 0.1) 18%, transparent 42%),
    linear-gradient(90deg, transparent 50%, rgba(184, 154, 93, 0.08) 68%, transparent 88%);
  animation: ambientCurtain 20s ease-in-out infinite alternate;
}

.page-shell {
  position: relative;
  z-index: 1;
  width: 100%;
}

.page-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(8, 8, 8, 0.58);
  border-bottom: 1px solid var(--color-border);
}

.page-header__inner,
.section-layout {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding-left: var(--layout-side-padding);
  padding-right: var(--layout-side-padding);
}

.page-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.site-brand__title {
  display: block;
  margin-bottom: 2px;
  font-family: "AppleMyungjo", "Batang", "Malgun Gothic", serif;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.site-brand__subtitle {
  display: block;
  font-size: 12px;
  color: var(--color-text-secondary);
  opacity: 0.8;
}

.section-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.pill-button,
.section-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text-secondary);
  font-size: 14px;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.section-nav__link {
  min-height: 40px;
  padding: 0 14px;
  font-size: 13px;
}

.pill-button:hover,
.section-nav__link:hover,
.text-cta:hover,
.section-transition:hover {
  background: rgba(255, 255, 255, 0.08);
}

.pill-button--primary {
  background: linear-gradient(180deg, rgba(111, 143, 139, 0.26), rgba(111, 143, 139, 0.1));
  border-color: rgba(111, 143, 139, 0.36);
  color: var(--color-text-primary);
}

.text-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-primary);
  font-size: 15px;
  line-height: 1.4;
  padding: 4px 0;
}

.text-cta::after {
  content: "→";
  color: var(--color-accent-gold);
  font-size: 16px;
  line-height: 1;
}

.section-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.section-tag {
  padding: 8px 11px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 11px;
}

.section-transition {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  color: var(--color-accent-gold);
  font-size: 13px;
  opacity: 0.9;
  padding: 4px 0;
}

.section-transition::after {
  content: "↓";
  font-size: 16px;
  line-height: 1;
}

.panel {
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: var(--shadow-panel);
}

.panel__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.panel__title {
  display: block;
  margin-bottom: 4px;
  font-family: "AppleMyungjo", "Batang", "Malgun Gothic", serif;
  font-size: 24px;
  font-weight: 500;
}

.panel__description {
  color: var(--color-text-secondary);
  font-size: 13px;
}

.panel__badge {
  padding: 10px 12px;
  border: 1px solid rgba(184, 154, 93, 0.28);
  border-radius: var(--radius-pill);
  background: rgba(184, 154, 93, 0.06);
  color: var(--color-accent-gold);
  font-size: 11px;
  white-space: nowrap;
}

.portfolio-section {
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  scroll-margin-top: calc(var(--layout-header-height) + 18px);
}

.portfolio-section:last-child { border-bottom: 0; }

.portfolio-section--hero {
  min-height: calc(100vh - var(--layout-header-height));
}

.portfolio-section--hero .section-layout {
  min-height: calc(100vh - var(--layout-header-height));
  padding-top: 72px;
  padding-bottom: 72px;
}

.section-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(420px, 1.08fr);
  gap: var(--layout-content-gap);
  align-items: center;
  padding-top: var(--layout-section-padding);
  padding-bottom: var(--layout-section-padding);
}

.section-copy {
  position: relative;
  z-index: 2;
  max-width: 540px;
}

.section-copy__eyebrow {
  margin-bottom: 14px;
  color: var(--color-accent-teal);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.section-copy__title {
  margin: 0 0 18px;
  font-family: "AppleMyungjo", "Batang", "Malgun Gothic", serif;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.04;
  font-size: clamp(34px, 4.7vw, 62px);
}

.portfolio-section--hero .section-copy__title {
  font-size: clamp(42px, 6vw, 78px);
}

.section-copy__description {
  margin: 0 0 20px;
  color: var(--color-text-secondary);
  font-size: 16px;
}

.section-copy__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.stage-visual {
  position: relative;
  min-height: 680px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.34), transparent 16%),
    radial-gradient(circle at 50% 24%, rgba(255, 255, 255, 0.1), transparent 28%),
    linear-gradient(180deg, #191919 0%, #0c0c0c 72%);
  box-shadow: var(--shadow-panel);
}

.stage-visual::before {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: 8%;
  height: 18%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.16), transparent 60%);
  filter: blur(14px);
  animation: ambientDrift var(--motion-medium) ease-in-out infinite alternate;
}

.stage-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.03) 50%, transparent 100%),
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.34) 100%);
  mix-blend-mode: soft-light;
}

.stage-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
  filter: saturate(0.74) contrast(1.04) brightness(0.72);
}

.stage-media--video {
  opacity: 0.62;
}

.stage-media-fallback {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 18%, rgba(243, 238, 223, 0.20), transparent 16%),
    linear-gradient(180deg, rgba(184, 154, 93, 0.18), rgba(111, 143, 139, 0.12)),
    linear-gradient(180deg, #242424, #111111);
}

.stage-floating-card,
.stage-floating-note {
  position: absolute;
  z-index: 3;
  border: 1px solid var(--color-border-strong);
  background: rgba(8, 8, 8, 0.48);
  backdrop-filter: blur(10px);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-floating);
}

.stage-floating-card {
  top: 22px;
  left: 22px;
  max-width: 220px;
  padding: 12px 14px;
  border-radius: 16px;
}

.stage-floating-note {
  right: 22px;
  bottom: 22px;
  width: 220px;
  padding: 14px 16px;
  border-radius: 18px;
}

.stage-floating-card strong,
.stage-floating-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-primary);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.stage-floating-card span,
.stage-floating-note span {
  font-size: 12px;
  line-height: 1.5;
}

.archive-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.archive-card,
.contact-card {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

.archive-card__media-wrap {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.22), transparent 16%),
    linear-gradient(180deg, rgba(184, 154, 93, 0.28), rgba(111, 143, 139, 0.18)),
    linear-gradient(180deg, #242424, #111111);
}

.archive-card__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.78;
  filter: saturate(0.82) contrast(1.04) brightness(0.82);
}

.archive-card__media--video {
  opacity: 0.7;
}

.archive-card__body {
  padding: 16px;
}

.archive-card__title {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
}

.archive-card__meta {
  color: var(--color-text-secondary);
  opacity: 0.84;
  font-size: 13px;
}

.contact-card {
  padding: 18px;
}

.contact-card__label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-accent-gold);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.contact-card__value,
.contact-card a {
  color: var(--color-text-primary);
  font-size: 16px;
  word-break: break-word;
}

.portfolio-section.is-current .section-copy__eyebrow,
.portfolio-section.is-current .section-copy__title {
  text-shadow: 0 0 26px rgba(243, 238, 223, 0.05);
}

.portfolio-section.is-current .stage-visual {
  border-color: rgba(184, 154, 93, 0.18);
}

@keyframes ambientDrift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(2vw, 3vh, 0) scale(1.04); }
  100% { transform: translate3d(-2vw, -2vh, 0) scale(0.98); }
}

@keyframes ambientGrain {
  0% { transform: translate3d(0, 0, 0); }
  25% { transform: translate3d(-1%, 1%, 0); }
  50% { transform: translate3d(1%, -1%, 0); }
  75% { transform: translate3d(-0.5%, -1%, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

@keyframes ambientCurtain {
  0% { transform: translate3d(-2%, 0, 0) scaleX(1); }
  50% { transform: translate3d(2%, 0, 0) scaleX(1.04); }
  100% { transform: translate3d(-1%, 0, 0) scaleX(0.98); }
}

@media (max-width: 1024px) {
  :root {
    --layout-section-padding: 84px;
    --layout-content-gap: 24px;
  }

  .section-layout {
    grid-template-columns: 1fr;
    gap: var(--layout-content-gap);
    align-items: start;
  }

  .section-copy { max-width: none; }
  .portfolio-section--hero { min-height: auto; }

  .portfolio-section--hero .section-layout {
    min-height: auto;
    padding-top: 56px;
    padding-bottom: 56px;
  }

  .stage-visual { min-height: 500px; }
  .stage-floating-card { top: 18px; left: 18px; }
  .stage-floating-note { right: 18px; bottom: 18px; }
}

@media (max-width: 720px) {
  :root {
    --layout-section-padding: 56px;
    --layout-side-padding: 16px;
    --layout-content-gap: 18px;
  }

  .section-nav { display: none; }
  .archive-grid, .contact-grid { grid-template-columns: 1fr; }

  .portfolio-section--hero .section-layout {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .section-layout { gap: var(--layout-content-gap); }
  .stage-visual { min-height: 380px; border-radius: 22px; }
  .stage-floating-card, .stage-floating-note { max-width: 150px; padding: 10px 12px; }
  .stage-floating-card { top: 14px; left: 14px; }
  .stage-floating-note { right: 14px; bottom: 14px; width: 150px; }
  .stage-floating-card strong, .stage-floating-note strong { font-size: 11px; }
  .stage-floating-card span, .stage-floating-note span { font-size: 11px; }
  .portfolio-section--hero .section-copy__title { font-size: 42px; }
  .section-copy__title { font-size: 34px; }
  .section-copy__description { margin-bottom: 14px; }
}

@media (max-width: 480px) {
  :root { --layout-section-padding: 44px; }
  .portfolio-section--hero .section-layout { padding-top: 28px; padding-bottom: 32px; }
  .section-copy__eyebrow { margin-bottom: 10px; }
  .section-tag-list { gap: 8px; margin-bottom: 16px; }
  .section-tag { padding: 6px 9px; font-size: 10px; }
  .section-copy__title { margin-bottom: 14px; }
  .stage-visual { min-height: 320px; }
  .panel, .contact-card { border-radius: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ambient-background::before,
  .ambient-background::after,
  .ambient-background__noise,
  .ambient-background__curtain,
  .stage-visual::before {
    animation: none !important;
  }
  .stage-media,
  .archive-card__media { animation: none !important; }
}