/* VelinStyle Atelier brand home */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,700&family=Sora:wght@400;500;600;700&display=swap");

:root {
  --at-bg0: oklch(14% 0.03 250);
  --at-bg1: oklch(18% 0.04 260);
  --at-text: oklch(96% 0.01 95);
  --at-muted: oklch(82% 0.02 250);
  --at-accent: oklch(78% 0.13 195);
  --at-accent-2: oklch(74% 0.14 320);
  --at-font-display: "Fraunces", Georgia, serif;
  --at-font-body: "Sora", system-ui, sans-serif;
  --at-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --at-header-h: 4.35rem;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--at-header-h) + 0.75rem);
}

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

body {
  margin: 0;
  min-block-size: 100dvh;
  font-family: var(--at-font-body);
  color: var(--at-text);
  background:
    radial-gradient(900px 560px at 85% -10%, color-mix(in oklch, var(--at-accent) 28%, transparent), transparent 55%),
    radial-gradient(700px 480px at 0% 40%, color-mix(in oklch, var(--at-accent-2) 18%, transparent), transparent 50%),
    linear-gradient(165deg, var(--at-bg0), var(--at-bg1));
  background-attachment: fixed;
}

:focus-visible {
  outline: 3px solid var(--at-accent);
  outline-offset: 3px;
}

.velin-skip-link:focus {
  outline: 3px solid var(--at-accent);
  outline-offset: 3px;
}

/* Scroll progress */

.at-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  block-size: 3px;
  pointer-events: none;
  background: color-mix(in oklch, var(--at-text) 8%, transparent);
}

.at-progress__bar {
  display: block;
  block-size: 100%;
  inline-size: 0%;
  background: linear-gradient(90deg, var(--at-accent), var(--at-accent-2));
  box-shadow: 0 0 12px color-mix(in oklch, var(--at-accent) 55%, transparent);
  transition: inline-size 80ms linear;
}

/* Header */

.at-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem clamp(1rem, 3vw, 2rem);
  border-block-end: 1px solid transparent;
  background: color-mix(in oklch, var(--at-bg0) 55%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  transition:
    background 280ms var(--at-ease),
    border-color 280ms ease,
    box-shadow 280ms ease,
    padding 280ms var(--at-ease);
}

.at-top.is-scrolled {
  background: color-mix(in oklch, var(--at-bg0) 88%, transparent);
  border-block-end-color: color-mix(in oklch, var(--at-text) 12%, transparent);
  box-shadow: 0 12px 36px color-mix(in oklch, black 28%, transparent);
  padding-block: 0.55rem;
}

.at-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: inherit;
}

.at-brand__mark {
  display: grid;
  place-items: center;
  inline-size: 2.45rem;
  block-size: 2.45rem;
  border-radius: 0.8rem;
  background: linear-gradient(145deg, var(--at-accent), var(--at-accent-2));
  color: oklch(16% 0.03 230);
  box-shadow:
    inset 0 1px 0 color-mix(in oklch, white 35%, transparent),
    0 0 24px color-mix(in oklch, var(--at-accent) 35%, transparent);
  animation: at-mark-pulse 5.5s ease-in-out infinite;
}

.at-brand__mark velin-icon {
  display: grid;
  place-items: center;
}

.at-brand__name {
  font-family: var(--at-font-display);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.1;
}

.at-brand__tag {
  display: block;
  margin-block-start: 0.15rem;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--at-muted);
  font-weight: 700;
}

.at-top__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  align-items: center;
}

.at-top__nav a {
  color: var(--at-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.45rem 0.7rem;
  min-block-size: 2.55rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    color 200ms ease,
    background 200ms ease,
    border-color 200ms ease,
    transform 200ms var(--at-ease);
}

.at-top__nav a:hover {
  color: var(--at-text);
  background: color-mix(in oklch, var(--at-text) 7%, transparent);
  transform: translateY(-1px);
}

.at-top__nav a.is-current {
  color: var(--at-text);
  border-color: color-mix(in oklch, var(--at-accent) 40%, transparent);
  background: color-mix(in oklch, var(--at-accent) 12%, transparent);
}

.at-top__cta {
  color: oklch(16% 0.03 230) !important;
  background: linear-gradient(145deg, var(--at-accent), color-mix(in oklch, var(--at-accent-2) 50%, var(--at-accent))) !important;
  border-color: transparent !important;
  font-weight: 700 !important;
}

.at-top__cta:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

@media (max-width: 820px) {
  .at-top {
    gap: 0.5rem;
    padding-inline: 0.75rem;
  }

  .at-brand__tag {
    display: none;
  }

  .at-top__nav {
    inline-size: 100%;
    justify-content: flex-start;
    gap: 0.15rem;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding-block: 0.15rem;
  }

  .at-top__nav::-webkit-scrollbar {
    display: none;
  }

  .at-top__nav a span { display: none; }

  .at-top__nav a {
    flex: 0 0 auto;
    padding-inline: 0.55rem;
    justify-content: center;
    min-block-size: 2.65rem;
    min-inline-size: 2.65rem;
  }

  .at-lang {
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.06em;
  }

  .at-lang span { display: inline !important; }
}

.at-lang {
  font-weight: 800;
  letter-spacing: 0.08em;
  min-inline-size: 2.4rem;
  justify-content: center;
}

.at-hero {
  position: relative;
  min-block-size: min(62dvh, 34rem);
  display: grid;
  place-items: center;
  text-align: center;
  padding: clamp(2rem, 5vw, 3.25rem) clamp(1rem, 3vw, 2rem);
  overflow: hidden;
  border-block-end: 1px solid color-mix(in oklch, var(--at-text) 10%, transparent);
}

.at-hero__plane {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 55% at 78% 28%, color-mix(in oklch, var(--at-accent) 32%, transparent), transparent 70%),
    radial-gradient(ellipse 50% 45% at 12% 78%, color-mix(in oklch, var(--at-accent-2) 22%, transparent), transparent 65%),
    linear-gradient(180deg, transparent 40%, color-mix(in oklch, var(--at-bg0) 55%, transparent));
}

.at-hero__grid {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image:
    linear-gradient(color-mix(in oklch, var(--at-text) 18%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklch, var(--at-text) 18%, transparent) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 35%, black, transparent 75%);
}

.at-hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  animation: at-float 9s ease-in-out infinite;
}

.at-hero__orb--1 {
  inset: 10% auto auto 58%;
  inline-size: clamp(10rem, 28vw, 20rem);
  block-size: clamp(10rem, 28vw, 20rem);
  background: color-mix(in oklch, var(--at-accent) 38%, transparent);
}

.at-hero__orb--2 {
  inset: auto 6% 16% auto;
  inline-size: clamp(8rem, 20vw, 14rem);
  block-size: clamp(8rem, 20vw, 14rem);
  background: color-mix(in oklch, var(--at-accent-2) 32%, transparent);
  animation-delay: -3s;
}

.at-hero__orb--3 {
  inset: 38% auto auto 8%;
  inline-size: 7rem;
  block-size: 7rem;
  background: color-mix(in oklch, oklch(78% 0.12 85) 28%, transparent);
  animation-delay: -5.5s;
}

.at-hero__copy {
  position: relative;
  z-index: 1;
  max-inline-size: 40rem;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.at-hero__eyebrow {
  margin: 0 0 0.85rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--at-accent);
}

.at-hero__brand {
  margin: 0 0 0.7rem;
  font-family: var(--at-font-display);
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
  max-inline-size: 12ch;
  background: linear-gradient(
    125deg,
    var(--at-text) 10%,
    color-mix(in oklch, var(--at-accent) 75%, white) 48%,
    var(--at-text) 88%
  );
  background-size: 180% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: at-brand-gleam 9s ease-in-out infinite;
}

.at-hero__slogan {
  margin: 0 0 0.55rem;
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--at-text);
  max-inline-size: 28rem;
}

.at-hero__support {
  margin: 0 0 0.55rem;
  color: var(--at-muted);
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 600;
  max-inline-size: 34rem;
}

.at-hero__traits {
  margin: 0 0 1.45rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: color-mix(in oklch, var(--at-text) 70%, var(--at-accent));
  max-inline-size: 36rem;
}

.at-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: center;
}

.at-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-block-size: 2.85rem;
  padding: 0.65rem 1.1rem;
  border-radius: 0.65rem;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform 200ms var(--at-ease), filter 200ms ease;
}

.at-cta a:hover {
  transform: translateY(-2px);
}

.at-cta__primary {
  background: linear-gradient(145deg, var(--at-accent), color-mix(in oklch, var(--at-accent-2) 55%, var(--at-accent)));
  color: oklch(16% 0.03 230);
}

.at-cta__ghost {
  border: 1px solid color-mix(in oklch, var(--at-text) 22%, transparent);
  color: var(--at-text);
  background: color-mix(in oklch, var(--at-bg1) 50%, transparent);
}

@media (max-width: 640px) {
  .at-hero {
    min-block-size: auto;
    padding-block: 1.75rem 1.65rem;
  }

  .at-hero__brand {
    max-inline-size: none;
    font-size: clamp(2.1rem, 11vw, 3.2rem);
  }

  .at-hero__slogan {
    font-size: 1.05rem;
  }

  .at-hero__support,
  .at-hero__traits {
    padding-inline: 0.25rem;
  }

  .at-cta {
    flex-direction: column;
    inline-size: 100%;
  }

  .at-cta a {
    inline-size: 100%;
  }

  .at-world {
    min-block-size: 15rem;
    padding: 1.1rem 1rem 1.15rem;
  }

  .at-world__brand {
    font-size: 1.35rem;
  }

  .at-world__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .at-world__go,
  .at-world__dl {
    inline-size: 100%;
    justify-content: center;
    text-align: center;
  }

  .at-includes__grid {
    grid-template-columns: 1fr;
  }

  .at-section {
    padding-inline: 1rem;
  }

  .at-cats {
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }

  .at-cat {
    min-block-size: 9.5rem;
    padding: 0.9rem 0.8rem;
  }

  .at-cat__desc {
    font-size: 0.75rem;
  }
}

.at-section {
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 3vw, 2rem);
  max-inline-size: 72rem;
  margin-inline: auto;
}

.at-section__head {
  margin-block-end: 1.6rem;
}

.at-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 0.65rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--at-accent);
  border: 1px solid color-mix(in oklch, var(--at-accent) 35%, transparent);
  background: color-mix(in oklch, var(--at-accent) 10%, transparent);
}

.at-section h2,
.at-section__head h2 {
  margin: 0 0 0.5rem;
  font-family: var(--at-font-display);
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  letter-spacing: -0.02em;
}

.at-section > p,
.at-section__head > p {
  margin: 0;
  color: var(--at-muted);
  max-inline-size: 38rem;
  line-height: 1.55;
}

.at-section__head > p {
  margin-block-start: 0.55rem;
}

/* Categories — equal cells, distinct colors */

.at-cats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.at-cats > li {
  display: flex;
  min-inline-size: 0;
}

.at-cat {
  --mx: 50%;
  --my: 35%;
  --tone: oklch(72% 0.12 195);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
  inline-size: 100%;
  min-block-size: 10.5rem;
  padding: 1.1rem 1.05rem 1rem;
  border-radius: 1rem;
  border: 1px solid color-mix(in oklch, var(--tone) 42%, transparent);
  background:
    linear-gradient(
      160deg,
      color-mix(in oklch, var(--tone) 34%, var(--at-bg1)),
      color-mix(in oklch, var(--tone) 10%, var(--at-bg0)) 70%
    );
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  isolation: isolate;
  transition:
    transform 240ms var(--at-ease),
    border-color 240ms ease,
    box-shadow 240ms ease;
}

.at-cat--marketing { --tone: oklch(74% 0.14 195); }
.at-cat--auth { --tone: oklch(72% 0.14 155); }
.at-cat--commerce { --tone: oklch(78% 0.13 85); }
.at-cat--apps { --tone: oklch(72% 0.12 250); }
.at-cat--community { --tone: oklch(70% 0.15 45); }
.at-cat--business { --tone: oklch(74% 0.08 230); }
.at-cat--saas { --tone: oklch(72% 0.14 20); }
.at-cat--elements { --tone: oklch(76% 0.12 130); }
.at-cat--header { --tone: oklch(72% 0.1 250); }
.at-cat--footer { --tone: oklch(70% 0.08 280); }
.at-cat--menu { --tone: oklch(74% 0.11 210); }
.at-cat--slider { --tone: oklch(76% 0.12 40); }
.at-cat--hero { --tone: oklch(73% 0.13 20); }
.at-cat--features { --tone: oklch(74% 0.12 160); }
.at-cat--proof { --tone: oklch(72% 0.1 320); }
.at-cat--pricing { --tone: oklch(78% 0.12 95); }
.at-cat--cta { --tone: oklch(70% 0.14 25); }
.at-cat--contact { --tone: oklch(73% 0.1 230); }
.at-cat--faq { --tone: oklch(75% 0.09 180); }

.at-cat__shine {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    280px circle at var(--mx) var(--my),
    color-mix(in oklch, white 28%, transparent),
    transparent 45%
  );
  opacity: 0;
  mix-blend-mode: soft-light;
  pointer-events: none;
  z-index: 0;
  transition: opacity 240ms ease;
}

.at-cat:hover,
.at-cat:focus-visible {
  transform: translateY(-4px);
  border-color: color-mix(in oklch, var(--tone) 70%, white);
  box-shadow:
    0 16px 36px color-mix(in oklch, black 28%, transparent),
    0 0 28px color-mix(in oklch, var(--tone) 28%, transparent);
}

.at-cat:hover .at-cat__shine,
.at-cat:focus-visible .at-cat__shine {
  opacity: 1;
}

.at-cat:hover .at-cat__go {
  transform: translateX(3px);
  color: color-mix(in oklch, var(--tone) 70%, white);
}

.at-cat__ico,
.at-cat__label,
.at-cat__desc,
.at-cat__go {
  position: relative;
  z-index: 1;
}

.at-cat__ico {
  display: grid;
  place-items: center;
  inline-size: 2.55rem;
  block-size: 2.55rem;
  border-radius: 0.75rem;
  color: color-mix(in oklch, var(--tone) 85%, white);
  background: color-mix(in oklch, var(--tone) 22%, transparent);
  border: 1px solid color-mix(in oklch, var(--tone) 40%, transparent);
  margin-block-end: 0.15rem;
}

.at-cat__label {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.at-cat__desc {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--at-muted);
  line-height: 1.35;
  flex: 1;
}

.at-cat__go {
  margin-block-start: auto;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: color-mix(in oklch, var(--tone) 75%, white);
  transition: transform 220ms var(--at-ease), color 220ms ease;
}

@media (max-width: 960px) {
  .at-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 420px) {
  .at-cat {
    min-block-size: 9.75rem;
    padding: 0.95rem 0.85rem 0.9rem;
  }

  .at-cat__label {
    font-size: 0.92rem;
  }
}

/* Includes */

.at-includes__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: 0.9rem;
}

.at-include {
  position: relative;
  height: 100%;
  padding: 1.2rem 1.15rem 1.25rem;
  border-radius: 1.05rem;
  border: 1px solid color-mix(in oklch, var(--at-text) 12%, transparent);
  background:
    linear-gradient(
      160deg,
      color-mix(in oklch, var(--at-accent) 10%, var(--at-bg1)),
      color-mix(in oklch, var(--at-bg0) 85%, transparent)
    );
  overflow: hidden;
  transition:
    transform 240ms var(--at-ease),
    border-color 240ms ease,
    box-shadow 240ms ease;
}

.at-include::before {
  content: "";
  position: absolute;
  inset: auto -20% -40% auto;
  inline-size: 8rem;
  block-size: 8rem;
  border-radius: 50%;
  background: color-mix(in oklch, var(--at-accent) 22%, transparent);
  filter: blur(18px);
  opacity: 0.55;
  pointer-events: none;
  transition: opacity 280ms ease, transform 280ms var(--at-ease);
}

.at-include:hover {
  transform: translateY(-4px);
  border-color: color-mix(in oklch, var(--at-accent) 42%, transparent);
  box-shadow: 0 18px 40px color-mix(in oklch, black 28%, transparent);
}

.at-include:hover::before {
  opacity: 0.9;
  transform: translate(-10%, -10%) scale(1.15);
}

.at-include__ico {
  display: grid;
  place-items: center;
  inline-size: 2.65rem;
  block-size: 2.65rem;
  margin-block-end: 0.85rem;
  border-radius: 0.8rem;
  color: oklch(16% 0.03 230);
  background: linear-gradient(145deg, var(--at-accent), color-mix(in oklch, var(--at-accent-2) 55%, var(--at-accent)));
  box-shadow: 0 0 22px color-mix(in oklch, var(--at-accent) 28%, transparent);
  animation: at-icon-gleam 6s ease-in-out infinite;
}

.at-include h3 {
  position: relative;
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.at-include p {
  position: relative;
  margin: 0;
  color: var(--at-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

/* Signature showcases — interactive shine stage */

.at-worlds {
  position: relative;
  overflow: hidden;
}

.at-worlds__aura {
  position: absolute;
  inset: 8% 10% auto;
  block-size: 18rem;
  border-radius: 50%;
  filter: blur(48px);
  pointer-events: none;
  opacity: 0.55;
  transition: background 500ms var(--at-ease), opacity 400ms ease;
  background: color-mix(in oklch, var(--at-accent) 40%, transparent);
  z-index: 0;
}

.at-worlds[data-active="cascade"] .at-worlds__aura {
  background: color-mix(in oklch, oklch(72% 0.12 195) 48%, transparent);
}

.at-worlds[data-active="lumen"] .at-worlds__aura {
  background: color-mix(in oklch, oklch(78% 0.12 85) 46%, transparent);
}

.at-worlds[data-active="forge"] .at-worlds__aura {
  background: color-mix(in oklch, oklch(68% 0.14 45) 44%, transparent);
}

.at-worlds[data-active="library"] .at-worlds__aura {
  background: color-mix(in oklch, var(--at-accent-2) 42%, transparent);
}

.at-worlds > *:not(.at-worlds__aura) {
  position: relative;
  z-index: 1;
}

.at-worlds__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  perspective: 1200px;
}

@media (min-width: 720px) {
  .at-worlds__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.at-reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition:
    opacity 700ms var(--at-ease),
    transform 700ms var(--at-ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}

.at-reveal.is-inview {
  opacity: 1;
  transform: translateY(0);
}

.at-world {
  --mx: 50%;
  --my: 40%;
  --rx: 0deg;
  --ry: 0deg;
  --world-tone: var(--at-accent);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-block-size: 17rem;
  padding: 1.25rem 1.3rem 1.35rem;
  border-radius: 1.15rem;
  text-decoration: none;
  color: inherit;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid color-mix(in oklch, var(--at-text) 14%, transparent);
  background:
    linear-gradient(
      155deg,
      color-mix(in oklch, var(--world-tone) 16%, var(--at-bg1)),
      color-mix(in oklch, var(--at-bg0) 88%, transparent) 55%
    );
  box-shadow:
    inset 0 1px 0 color-mix(in oklch, white 14%, transparent),
    0 18px 40px color-mix(in oklch, black 28%, transparent);
  transform: rotateX(var(--rx)) rotateY(var(--ry)) translateZ(0);
  transition:
    transform 220ms var(--at-ease),
    border-color 250ms ease,
    box-shadow 250ms ease;
}

.at-world--cascade { --world-tone: oklch(72% 0.12 195); }
.at-world--lumen { --world-tone: oklch(78% 0.12 85); }
.at-world--forge { --world-tone: oklch(68% 0.14 45); }
.at-world--library { --world-tone: oklch(74% 0.14 320); }

.at-world__shine {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(
      420px circle at var(--mx) var(--my),
      color-mix(in oklch, white 38%, transparent),
      transparent 42%
    ),
    linear-gradient(
      115deg,
      transparent 30%,
      color-mix(in oklch, white 18%, transparent) 48%,
      transparent 62%
    );
  opacity: 0;
  mix-blend-mode: soft-light;
  pointer-events: none;
  z-index: 2;
  transition: opacity 280ms ease;
  animation: at-sheen 7.5s ease-in-out infinite;
}

.at-world__grain {
  position: absolute;
  inset: 0;
  opacity: 0.07;
  pointer-events: none;
  z-index: 1;
  background-image:
    repeating-linear-gradient(
      -18deg,
      transparent 0 2px,
      color-mix(in oklch, white 35%, transparent) 2px 3px
    );
}

.at-world:hover,
.at-world:focus-visible,
.at-world.is-active {
  border-color: color-mix(in oklch, var(--world-tone) 55%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in oklch, white 22%, transparent),
    0 0 0 1px color-mix(in oklch, var(--world-tone) 28%, transparent),
    0 22px 48px color-mix(in oklch, black 34%, transparent),
    0 0 42px color-mix(in oklch, var(--world-tone) 22%, transparent);
}

.at-world:hover .at-world__shine,
.at-world:focus-visible .at-world__shine,
.at-world.is-active .at-world__shine {
  opacity: 1;
}

.at-world__num,
.at-world__brand,
.at-world__title,
.at-world__desc,
.at-world__chips,
.at-world__go {
  position: relative;
  z-index: 3;
}

.at-world__num {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: color-mix(in oklch, var(--world-tone) 85%, white);
}

.at-world__brand {
  font-family: var(--at-font-display);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  background: linear-gradient(
    120deg,
    var(--at-text) 20%,
    color-mix(in oklch, var(--world-tone) 70%, white) 55%,
    var(--at-text) 90%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: at-brand-gleam 8s ease-in-out infinite;
}

.at-world__title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--at-text);
}

.at-world__desc {
  margin: 0;
  color: var(--at-muted);
  font-size: 0.88rem;
  line-height: 1.5;
  flex: 1;
}

.at-world__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  margin: 0.15rem 0 0;
  padding: 0;
}

.at-world__chips li {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.55rem;
  border-radius: 0.4rem;
  border: 1px solid color-mix(in oklch, var(--world-tone) 35%, transparent);
  background: color-mix(in oklch, var(--world-tone) 12%, transparent);
  color: color-mix(in oklch, var(--at-text) 88%, var(--world-tone));
}

.at-world__actions {
  position: relative;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-block-start: 0.35rem;
  align-items: center;
}

.at-world__go {
  margin-block-start: 0;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: color-mix(in oklch, var(--world-tone) 75%, white);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
}

.at-world__go::after {
  content: "→";
  transition: transform 220ms var(--at-ease);
}

.at-world:hover .at-world__go::after,
.at-world:focus-within .at-world__go::after {
  transform: translateX(4px);
}

.at-world__dl {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  min-block-size: 2.4rem;
  padding: 0.4rem 0.75rem;
  border-radius: 0.55rem;
  border: 1px solid color-mix(in oklch, var(--world-tone) 45%, transparent);
  background: color-mix(in oklch, var(--world-tone) 16%, transparent);
  color: color-mix(in oklch, var(--world-tone) 80%, white);
  transition: transform 200ms var(--at-ease), border-color 200ms ease, background 200ms ease;
}

.at-world__dl:hover,
.at-world__dl:focus-visible {
  transform: translateY(-1px);
  border-color: color-mix(in oklch, var(--world-tone) 70%, white);
  background: color-mix(in oklch, var(--world-tone) 26%, transparent);
}

.at-world__dl[aria-busy="true"] {
  opacity: 0.7;
  cursor: wait;
}

.at-foot {
  padding: 1.5rem clamp(1rem, 3vw, 2rem);
  border-block-start: 1px solid color-mix(in oklch, var(--at-text) 12%, transparent);
  color: var(--at-muted);
  font-size: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: center;
}

.at-foot a {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  transition: color 200ms ease;
}

.at-foot a:hover { color: var(--at-text); }

@keyframes at-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes at-sheen {
  0%, 100% { transform: translateX(-6%) rotate(0.5deg); }
  50% { transform: translateX(6%) rotate(-0.5deg); }
}

@keyframes at-brand-gleam {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes at-mark-pulse {
  0%, 100% { box-shadow: inset 0 1px 0 color-mix(in oklch, white 35%, transparent), 0 0 18px color-mix(in oklch, var(--at-accent) 28%, transparent); }
  50% { box-shadow: inset 0 1px 0 color-mix(in oklch, white 45%, transparent), 0 0 32px color-mix(in oklch, var(--at-accent-2) 40%, transparent); }
}

@keyframes at-icon-gleam {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  .at-hero__orb,
  .at-world__shine,
  .at-world__brand,
  .at-hero__brand,
  .at-brand__mark,
  .at-include__ico,
  .at-progress__bar {
    animation: none !important;
    transition: none !important;
  }
  .at-hero__brand {
    color: var(--at-text);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
  }
  .at-cat:hover,
  .at-include:hover,
  .at-cta a:hover,
  .at-top__nav a:hover,
  .at-world {
    transform: none !important;
  }
  .at-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}