/* Winter Editions–inspired depth scroll — Saddle Up copper/ink */
:root {
  --wn-bg: #14100c;
  --wn-bg-deep: #0c0907;
  --wn-ink: #f7f0e4;
  --wn-muted: #b8a894;
  --wn-frost: rgba(247, 240, 228, 0.72);
  --wn-accent: #de8a4a;
  --wn-accent-soft: rgba(222, 138, 74, 0.16);
  --wn-line: rgba(247, 240, 228, 0.12);
  --wn-card: rgba(28, 22, 16, 0.62);
  --wn-font: Inter, system-ui, -apple-system, sans-serif;
  --wn-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--wn-bg);
  color: var(--wn-ink);
  font-family: var(--wn-font);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { text-wrap: balance; }
p, li { text-wrap: pretty; }

.wn-canvas-wrap {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--wn-bg-deep);
  overflow: clip;
}
.wn-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.wn-canvas-fallback {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 40%, var(--wn-dyn-glow, rgba(222, 138, 74, 0.2)), transparent 50%),
    radial-gradient(ellipse at 20% 70%, rgba(247, 240, 228, 0.06), transparent 45%),
    radial-gradient(ellipse at 80% 30%, rgba(196, 165, 116, 0.1), transparent 42%),
    var(--wn-bg-deep);
  transition: background 0.6s ease;
}

.wn-ui { position: relative; z-index: 2; }

.wn-top {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 3vw, 28px);
  background: linear-gradient(180deg, rgba(14, 10, 7, 0.78), transparent);
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
}
.wn-top__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: -0.02em;
}
.wn-top__brand img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}
.wn-top__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.wn-top__actions a:not(.wn-btn) {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--wn-muted);
}
.wn-top__actions a:not(.wn-btn):hover { color: var(--wn-ink); }

.wn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(222, 138, 74, 0.45);
  background: rgba(222, 138, 74, 0.14);
  color: var(--wn-ink);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: background 0.2s var(--wn-ease), border-color 0.2s var(--wn-ease);
}
.wn-btn:hover {
  background: rgba(222, 138, 74, 0.28);
  border-color: var(--wn-accent);
}
.wn-btn--solid {
  background: var(--wn-accent);
  border-color: var(--wn-accent);
  color: #120d09;
}
.wn-btn--solid:hover {
  background: #f0a06a;
  color: #120d09;
}
.wn-btn--ghost {
  background: transparent;
  color: var(--wn-accent);
}

/* Winter Editions–style TOC rail */
.wn-toc {
  position: fixed;
  left: clamp(12px, 2vw, 22px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 35;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 10px;
  border-radius: 16px;
  background: rgba(20, 16, 12, 0.45);
  border: 1px solid var(--wn-line);
  backdrop-filter: blur(14px) saturate(1.25);
  -webkit-backdrop-filter: blur(14px) saturate(1.25);
}
.wn-toc a {
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(247, 240, 228, 0.45);
  padding: 4px 6px;
  border-left: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.wn-toc a:hover,
.wn-toc a.is-active {
  color: var(--wn-ink);
  border-left-color: var(--wn-accent);
}

.wn-hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 6rem clamp(1.25rem, 6vw, 5rem) 5rem;
  padding-left: clamp(5.5rem, 12vw, 8.5rem);
  max-width: 920px;
}
.wn-hero__eyebrow {
  margin: 0 0 1rem;
  font-size: 0.84rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wn-dyn-a, var(--wn-accent));
}
.wn-hero__title {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-size: clamp(2.6rem, 8vw, 5.2rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.98;
}
.wn-hero__soft {
  color: var(--wn-frost);
  font-weight: 600;
}
.wn-hero__hard { color: var(--wn-ink); }
.wn-hero__sub {
  margin: 1.35rem 0 0;
  max-width: 42ch;
  font-size: clamp(1.02rem, 2.1vw, 1.2rem);
  line-height: 1.5;
  color: var(--wn-muted);
  background: var(--wn-card);
  border: 1px solid var(--wn-line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.95rem 1.1rem;
  border-radius: 14px;
}
.wn-hero__meta {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
  color: rgba(247, 240, 228, 0.5);
}

.wn-chapter {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 5rem clamp(1.25rem, 6vw, 5rem);
  padding-left: clamp(5.5rem, 12vw, 8.5rem);
}
.wn-chapter--right {
  justify-content: flex-end;
  padding-right: clamp(1.25rem, 6vw, 5rem);
}

.wn-card {
  width: min(100%, 34rem);
  padding: 1.55rem 1.6rem 1.7rem;
  border-radius: 18px;
  background: var(--wn-card);
  border: 1px solid rgba(247, 240, 228, 0.14);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(247, 240, 228, 0.08);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
}
.wn-card__kicker {
  margin: 0 0 0.65rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wn-dyn-a, var(--wn-accent));
}
.wn-card h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.55rem, 3.2vw, 2.05rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.wn-card > p {
  margin: 0 0 0.9rem;
  color: var(--wn-muted);
  font-size: 1.02rem;
  line-height: 1.5;
}
.wn-card ul {
  margin: 0;
  padding: 0 0 0 1.1rem;
  color: rgba(247, 240, 228, 0.82);
  font-size: 0.92rem;
}
.wn-card li + li { margin-top: 0.28rem; }
.wn-card__stat {
  margin-top: 1.1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--wn-line);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}
.wn-card__stat strong {
  font-size: 1.85rem;
  letter-spacing: -0.04em;
  color: var(--wn-accent);
}
.wn-card__stat span {
  font-size: 0.88rem;
  color: var(--wn-muted);
}
.wn-card__link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--wn-accent);
}
.wn-card__link:hover { color: #f0a06a; }

.wn-close {
  min-height: 90svh;
  display: flex;
  align-items: center;
  padding: 5rem clamp(1.25rem, 6vw, 5rem);
  padding-left: clamp(5.5rem, 12vw, 8.5rem);
}
.wn-card--close { width: min(100%, 36rem); }
.wn-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.15rem;
}
.wn-close__back {
  display: inline-block;
  margin-top: 1.25rem;
  font-size: 0.86rem;
  color: var(--wn-muted);
}
.wn-close__back:hover { color: var(--wn-ink); }

@media (max-width: 860px) {
  .wn-toc {
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    transform: none;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 4px;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
    padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    -webkit-overflow-scrolling: touch;
  }
  .wn-toc a {
    border-left: 0;
    border-bottom: 2px solid transparent;
    white-space: nowrap;
    font-size: 0.64rem;
  }
  .wn-toc a:hover,
  .wn-toc a.is-active {
    border-left-color: transparent;
    border-bottom-color: var(--wn-accent);
  }
  .wn-hero,
  .wn-chapter,
  .wn-chapter--right,
  .wn-close {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
    padding-bottom: 5.5rem;
  }
  .wn-chapter--right { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}