/* =========================================================================
   RESO MUSIC — design system
   Built by OCTA DEVS · https://octadevs.fun
   -------------------------------------------------------------------------
   Material: Liquid Glass (translucent floating layer over rich content)
   Register: warm amber / gold, "audiophile" premium

   HOW TO RETUNE (edit only the values in this block)
     --accent-h ... hue of the amber family (try 32 amber, 210 ice, 265 violet)
     --glass-blur / --glass-sat ... material intensity
   ========================================================================= */

/* --------------------------------------------------------------- 1. RESET */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* --scroll-pad keeps the sticky nav from covering the heading you jumped to. */
  scroll-padding-top: var(--scroll-pad);
  /* `clip`, NOT `hidden`. `overflow-x: hidden` computes to `hidden auto`, which
     turns <body> into its own scroll container: the viewport stops scrolling
     (window.scrollY stays 0) and every scroll-linked feature dies with it —
     scroll-behavior:smooth, position:sticky, and the IntersectionObserver
     behind the nav spy + reveal animations. `clip` clips without scrolling. */
  overflow-x: clip;
}

/* ------------------------------------------------------------- 1b. LENIS
   Smooth-scrolling driven by assets/vendor/lenis.min.js. This is Lenis's own
   recommended integration CSS, kept verbatim — the `!important` on
   scroll-behavior is load-bearing: it stops the native `smooth` above from
   fighting Lenis's own easing, which is what makes the motion feel like one
   continuous curve instead of two animations fighting over the same axis. */
html.lenis,
html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: clip; }
.lenis.lenis-scrolling iframe { pointer-events: none; }

body {
  min-height: 100svh;
  font-family: var(--f-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* no overflow-x here on purpose — it lives on <html> as `clip`.
     See the note in the reset block above. */
}

img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }

button, input { font: inherit; color: inherit; }

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

ul, ol { list-style: none; padding: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --------------------------------------------------- 2. DESIGN TOKENS
   Three layers: primitive → semantic → component                        */

:root {
  /* -- 2a. PRIMITIVE · amber ramp ------------------------------------- */
  --p-amber-50:  #fff7e8;
  --p-amber-100: #ffebcb;
  --p-amber-200: #ffd79c;
  --p-amber-300: #ffc169;
  --p-amber-400: #f9a93a;
  --p-amber-500: #f08c1a;
  --p-amber-600: #d8720c;
  --p-amber-700: #b0570a;
  --p-amber-800: #8a440c;

  /* -- 2b. PRIMITIVE · warm neutral ramp (espresso) ------------------- */
  --p-ink-950: #0e0a07;
  --p-ink-900: #151009;
  --p-ink-850: #1c150e;
  --p-ink-800: #241b13;
  --p-ink-700: #33261c;
  --p-ink-600: #4a392b;
  --p-ink-500: #6e5b49;
  --p-ink-400: #8f7c69;
  --p-ink-300: #b6a693;
  --p-ink-200: #d8cbb9;
  --p-ink-100: #ece3d6;
  --p-ink-50:  #f7f0e5;

  /* -- 2c. SEMANTIC · theme-independent knobs -------------------------- */
  --accent-h: 32;                 /* amber family — retune here            */
  --accent-canvas: #f08c1a;       /* canvas-safe mirror of --accent        */
  --glass-blur: 22px;
  --glass-sat: 1.55;
  --shell: 74rem;                 /* content measure                       */
  --measure: 62ch;

  /* -- 2d. SPACE · 8pt rhythm ------------------------------------------ */
  --s-1: 0.25rem;  --s-2: 0.5rem;   --s-3: 0.75rem;  --s-4: 1rem;
  --s-5: 1.5rem;   --s-6: 2rem;     --s-7: 2.5rem;   --s-8: 3rem;
  --s-9: 4rem;     --s-10: 5rem;    --s-11: 6.5rem;  --s-12: 8rem;

  /* -- 2e. RADIUS ------------------------------------------------------ */
  --r-xs: 10px; --r-sm: 14px; --r-md: 20px;
  --r-lg: 28px; --r-xl: 38px; --r-pill: 999px;

  /* -- 2f. TYPE -------------------------------------------------------- */
  --f-display: "Bricolage Grotesque", "Bricolage Grotesque Placeholder", Georgia, serif;
  --f-body: "Manrope", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Menlo, monospace;

  /* -- 2g. MOTION ------------------------------------------------------ */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 160ms;
  --t-mid: 320ms;
  --t-slow: 720ms;

  /* -- 2i. SCROLL ---------------------------------------------------------
     Height of the sticky nav plus breathing room. Bump this if you resize the
     nav — the landing offset for every in-page link is derived from it. */
  --scroll-pad: 6.5rem;
}

/* -- 2h. SEMANTIC · themes --------------------------------------------- */
[data-theme="light"] {
  color-scheme: light;

  --bg: #fbf6ee;
  --bg-deep: #f3e9db;
  --text: #1c1510;
  --text-soft: #4a392b;
  --muted: #6e5b49;

  --accent: oklch(66% 0.16 calc(var(--accent-h) + 23));
  --accent-ink: #7a3c02;         /* accent that passes 4.5:1 on light surfaces */
  --accent-soft: oklch(92% 0.06 70);
  --on-accent: #2a1503;

  /* glass material */
  --glass-fill: rgb(255 253 250 / 0.58);
  --glass-fill-strong: rgb(255 253 250 / 0.78);
  --glass-edge: rgb(255 255 255 / 0.85);
  --glass-sheen: rgb(255 255 255 / 0.9);
  --glass-under: rgb(120 90 50 / 0.12);

  /* aurora — the rich content the glass needs to refract */
  --aurora-a: oklch(88% 0.13 78 / 0.85);
  --aurora-b: oklch(84% 0.11 45 / 0.6);
  --aurora-c: oklch(90% 0.06 95 / 0.75);

  --hairline: rgb(28 21 16 / 0.1);
  --shadow-1: 0 1px 2px rgb(60 40 20 / 0.05), 0 2px 6px rgb(60 40 20 / 0.04);
  --shadow-2: 0 2px 6px rgb(60 40 20 / 0.06), 0 12px 28px -8px rgb(60 40 20 / 0.1);
  --shadow-3: 0 4px 12px rgb(60 40 20 / 0.07), 0 32px 64px -16px rgb(60 40 20 / 0.16);
  --wordmark-1: #2a1c0e;
  --wordmark-2: #6b4a24;
}

[data-theme="dark"] {
  color-scheme: dark;

  --bg: #0f0b08;
  --bg-deep: #070504;
  --text: #f6efe4;
  --text-soft: #d8cbb9;
  --muted: #a4917b;

  --accent: oklch(78% 0.15 calc(var(--accent-h) + 30));
  --accent-canvas: #f9a93a;       /* canvas-safe mirror of --accent        */
  --accent-ink: #ffc169;         /* accent that passes 4.5:1 on dark surfaces */
  --accent-soft: oklch(38% 0.08 55 / 0.45);
  --on-accent: #2a1503;           /* label colour on the amber button — solid */

  --glass-fill: rgb(48 36 26 / 0.5);
  --glass-fill-strong: rgb(48 36 26 / 0.72);
  --glass-edge: rgb(255 236 210 / 0.14);
  --glass-sheen: rgb(255 240 220 / 0.22);
  --glass-under: rgb(0 0 0 / 0.3);

  --aurora-a: oklch(62% 0.17 48 / 0.5);
  --aurora-b: oklch(52% 0.14 28 / 0.42);
  --aurora-c: oklch(70% 0.13 78 / 0.36);

  --hairline: rgb(246 239 228 / 0.11);
  --shadow-1: 0 1px 2px rgb(0 0 0 / 0.4);
  --shadow-2: 0 2px 8px rgb(0 0 0 / 0.42), 0 14px 32px -10px rgb(0 0 0 / 0.55);
  --shadow-3: 0 6px 18px rgb(0 0 0 / 0.45), 0 40px 80px -20px rgb(0 0 0 / 0.7);
  --wordmark-1: #fdf6ea;
  --wordmark-2: #b98d4e;
}

/* ------------------------------------------------ 3. LIQUID GLASS MATERIAL
   Apple's translation targets, adapted:
     blur 20–40px · fill 60–80% · saturation boost 1.2–1.5× · hairline edge
   Used ONLY on the floating functional layer + a few hero moments.         */

.glass {
  position: relative;
  isolation: isolate;
  background: var(--glass-fill);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-sat));
  border: 1px solid transparent;
  background-clip: padding-box;
  box-shadow:
    inset 0 1px 0 0 var(--glass-sheen),
    inset 0 -1px 0 0 var(--glass-under),
    var(--shadow-2);
  border-radius: var(--r-lg);
}

/* specular sheen — the highlight that sells the material */
.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background:
    linear-gradient(148deg, var(--glass-sheen) 0%, transparent 34%),
    radial-gradient(120% 80% at 8% 0%, var(--glass-sheen) 0%, transparent 58%);
  opacity: 0.55;
  pointer-events: none;
}

/* hairline: gradient border so the rim is lit at the top, shaded at the base */
.glass::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    165deg,
    var(--glass-edge) 0%,
    transparent 42%,
    transparent 62%,
    var(--glass-under) 100%
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

[data-theme="dark"] .glass::before { opacity: 0.4; }

/* --------------------------------------------------------- 4. LAYOUT */
.shell {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}
@media (max-width: 40rem) {
  .shell { width: min(100% - 1.75rem, var(--shell)); }
}

.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section--tight { padding-block: clamp(3rem, 6vw, 4.5rem); }

.stack > * + * { margin-top: var(--flow, 1rem); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-ink);
}
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.display {
  font-family: var(--f-display);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.h1 { font-size: clamp(2.85rem, 1.2rem + 7.2vw, 6rem); }
.h2 { font-size: clamp(2rem, 1.1rem + 3.6vw, 3.5rem); }
.h3 { font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.625rem); line-height: 1.2; letter-spacing: -0.02em; }

.lede {
  font-size: clamp(1.0625rem, 1rem + 0.35vw, 1.1875rem);
  color: var(--muted);
  max-width: var(--measure);
  text-wrap: pretty;
}

.mono {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.section-head {
  display: grid;
  gap: var(--s-4);
  max-width: 46rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

/* --------------------------------------------------- 5. AMBIENT AURORA
   Glass needs something rich beneath it. This is that something.            */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
  background: var(--bg);
}
.aurora__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}
.aurora__blob--a {
  width: 62vw; height: 62vw;
  top: -22vw; left: -10vw;
  background: radial-gradient(circle at 40% 40%, var(--aurora-a), transparent 68%);
  animation: drift-a 34s var(--ease-in-out) infinite alternate;
}
.aurora__blob--b {
  width: 54vw; height: 54vw;
  top: 4vh; right: -16vw;
  background: radial-gradient(circle at 55% 45%, var(--aurora-b), transparent 66%);
  animation: drift-b 42s var(--ease-in-out) infinite alternate;
}
.aurora__blob--c {
  width: 70vw; height: 46vw;
  bottom: -18vw; left: 18vw;
  background: radial-gradient(circle at 50% 50%, var(--aurora-c), transparent 70%);
  animation: drift-c 50s var(--ease-in-out) infinite alternate;
}
/* fine grain keeps the large gradients from banding */
.aurora::after {
  content: "";
  position: absolute;
  inset: -50%;
  opacity: 0.032;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(8vw, 10vh, 0) scale(1.16); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.1); }
  to   { transform: translate3d(-10vw, 14vh, 0) scale(0.94); }
}
@keyframes drift-c {
  from { transform: translate3d(0, 0, 0) scale(0.95); }
  to   { transform: translate3d(-6vw, -12vh, 0) scale(1.2); }
}

/* ------------------------------------------------------------ 6. BUTTONS */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  min-height: 46px;
  padding: 0.7rem 1.35rem;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 0.9375rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition:
    transform var(--t-fast) var(--ease-out),
    box-shadow var(--t-mid) var(--ease-out),
    background-color var(--t-fast) var(--ease-out),
    opacity var(--t-fast) linear;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.985); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn svg { width: 1.0625em; height: 1.0625em; flex: none; }

/* primary: colour the background, not the label (Apple's rule) */
.btn--primary {
  --btn-fg: var(--on-accent);
  background: linear-gradient(168deg, var(--p-amber-300), var(--accent) 46%, var(--p-amber-600));
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 0.55),
    0 1px 2px rgb(80 45 10 / 0.2),
    0 10px 24px -8px oklch(60% 0.16 45 / 0.55);
}
[data-theme="dark"] .btn--primary { --btn-fg: #2a1503; }
.btn--primary:hover {
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 0.6),
    0 2px 4px rgb(80 45 10 / 0.22),
    0 16px 34px -10px oklch(60% 0.16 45 / 0.68);
}

.btn--glass {
  background: var(--glass-fill-strong);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  backdrop-filter: blur(16px) saturate(1.5);
  box-shadow:
    inset 0 1px 0 0 var(--glass-sheen),
    inset 0 0 0 1px var(--glass-edge),
    var(--shadow-1);
}
.btn--glass:hover { box-shadow: inset 0 1px 0 0 var(--glass-sheen), inset 0 0 0 1px var(--glass-edge), var(--shadow-2); }

.btn--quiet { color: var(--muted); padding-inline: 0.9rem; }
.btn--quiet:hover { color: var(--text); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-weight: 650;
  font-size: 0.9375rem;
  color: var(--accent-ink);
  transition: gap var(--t-fast) var(--ease-out);
}
.link-arrow svg { width: 1em; height: 1em; }
.link-arrow:hover { gap: 0.75em; }

/* ---------------------------------------------------------------- 7. NAV */
.nav-shell {
  position: sticky;
  top: 0;
  z-index: 60;
  padding-top: var(--s-4);
  /* scroll edge effect: content fades out as it meets the bar */
  -webkit-mask-image: linear-gradient(#000 0 84%, transparent 100%);
  mask-image: linear-gradient(#000 0 84%, transparent 100%);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--s-4);
  padding: 0.5rem 0.5rem 0.5rem 0.9rem;
  border-radius: var(--r-pill);
  transition: box-shadow var(--t-mid) var(--ease-out);
}
.nav[data-stuck="true"] { box-shadow: inset 0 1px 0 0 var(--glass-sheen), inset 0 0 0 1px var(--glass-edge), var(--shadow-3); }

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding-block: 0.4rem;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.03em;
  margin-right: auto;
}
.nav__brand img {
  width: 30px; height: 30px;
  border-radius: 8px;
  object-fit: cover;
}
.nav__brand small {
  font-family: var(--f-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: center;
  margin-top: 2px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}
.nav__link {
  display: inline-block;
  padding: 0.5rem 0.8rem;
  border-radius: var(--r-pill);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-soft);
  transition: color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out);
}
.nav__link:hover { color: var(--text); background: var(--hairline); }
.nav__link[aria-current="page"] { color: var(--text); }

.nav__actions { display: flex; align-items: center; gap: 0.35rem; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border: 0;
  border-radius: var(--r-pill);
  background: transparent;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-spring);
}
.icon-btn:hover { background: var(--hairline); }
.icon-btn:active { transform: scale(0.92); }
.icon-btn svg { width: 19px; height: 19px; }
.icon-btn--sm { width: 40px; height: 40px; }

/* comfortable hit areas on touch devices */
@media (pointer: coarse) {
  .icon-btn--sm { width: 44px; height: 44px; }
  .nav__link { padding-block: 0.85rem; }
}

/* theme toggle: sun ⇄ moon crossfade, no layout shift */
.theme-toggle svg { grid-area: 1 / 1; transition: transform var(--t-mid) var(--ease-spring), opacity var(--t-mid) var(--ease-out); }
.theme-toggle .i-sun { opacity: 0; transform: rotate(-70deg) scale(0.6); }
.theme-toggle .i-moon { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle .i-sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle .i-moon { opacity: 0; transform: rotate(70deg) scale(0.6); }

.nav__burger { display: none; }

@media (max-width: 56rem) {
  .nav__links {
    position: fixed;
    inset: auto 1rem auto 1rem;
    top: 4.75rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding: 0.6rem;
    border-radius: var(--r-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.98);
    transition: opacity var(--t-mid) var(--ease-out), transform var(--t-mid) var(--ease-out), visibility var(--t-mid);
  }
  .nav__links[data-open="true"] { opacity: 1; visibility: visible; transform: none; }
  .nav__link { padding: 0.75rem 0.9rem; font-size: 0.9375rem; }
  .nav__link[aria-current="page"] { background: var(--hairline); }
  .nav__burger { display: grid; }
  .nav .btn--primary { display: none; }
}
@media (max-width: 30rem) {
  .nav__brand small { display: none; }
}

/* --------------------------------------------------------------- 8. HERO */
.hero {
  position: relative;
  padding-block: clamp(3.5rem, 10vw, 7rem) clamp(3rem, 7vw, 5rem);
}
.hero__grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem);
  align-items: center;
}
@media (min-width: 62rem) {
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; }
}

.hero__copy { display: grid; gap: var(--s-5); justify-items: start; }

.hero__title .line { display: block; }
/* The theme override swaps --grad ONLY. Using the `background` shorthand in a
   dark-mode rule would reset background-clip to border-box, painting the
   gradient as a solid box over transparent text (the text then disappears). */
.hero__title .accent {
  --grad: linear-gradient(102deg, var(--p-amber-500), var(--accent) 40%, var(--p-amber-300));
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
[data-theme="dark"] .hero__title .accent {
  --grad: linear-gradient(102deg, var(--p-amber-400), var(--p-amber-200) 46%, var(--p-amber-300));
}

.hero__proof {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-5);
  padding-top: var(--s-2);
}
.hero__proof li {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--muted);
}
.hero__proof svg { width: 1.05em; height: 1.05em; color: var(--accent-ink); flex: none; }

/* --- 8a. device frame (the honest screenshot slot) --------------------- */
.device {
  position: relative;
  width: min(100%, 20rem);
  margin-inline: auto;
  aspect-ratio: 9 / 19.2;
  padding: 0.55rem;
  border-radius: clamp(2.25rem, 6vw, 2.9rem);
  background: linear-gradient(160deg, var(--p-ink-700), var(--p-ink-850) 45%, var(--p-ink-950));
  box-shadow:
    inset 0 0 0 1px rgb(255 255 255 / 0.14),
    inset 0 1px 0 0 rgb(255 255 255 / 0.22),
    var(--shadow-3);
}
.device::after {
  /* glass reflection across the cover glass */
  content: "";
  position: absolute;
  inset: 0.55rem;
  border-radius: inherit;
  background: linear-gradient(122deg, rgb(255 255 255 / 0.16) 0 26%, transparent 46%);
  pointer-events: none;
  z-index: 3;
}
.device__screen {
  position: relative;
  height: 100%;
  border-radius: clamp(1.8rem, 5vw, 2.4rem);
  overflow: hidden;
  background: var(--bg-deep);
  display: grid;
}
.device__island {
  position: absolute;
  top: 0.7rem; left: 50%;
  transform: translateX(-50%);
  width: 30%; height: 1.4rem;
  border-radius: var(--r-pill);
  background: #000;
  z-index: 4;
}

/* --- 8b. screenshot slot ---------------------------------------------- */
.shot {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%; height: 100%;
  min-height: 9rem;
  overflow: hidden;
  background:
    linear-gradient(150deg, var(--p-ink-800), var(--p-ink-950));
  text-align: center;
}
.shot img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
}
/* The placeholder OVERLAYS the image rather than replacing it. Hiding the
   <img> with display:none would stop the browser fetching it, so the slot
   could never fill itself. */
.shot__ph {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0.6rem;
  padding: var(--s-4);
  color: var(--p-ink-300);
  text-align: center;
  background: linear-gradient(150deg, var(--p-ink-800), var(--p-ink-950));
}
.shot__ph svg { width: 26px; height: 26px; opacity: 0.55; }
.shot__ph b {
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.shot__ph span { font-size: 0.75rem; opacity: 0.6; max-width: 22ch; }
/* placeholder steps aside the moment a real screenshot lands */
.shot.is-filled .shot__ph { display: none; }

/* --- 8c. floating now-playing bar (UI, sits over the device) ------------ */
.player {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: -1.5rem;
  transform: translateX(-50%);
  width: min(112%, 21rem);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.7rem;
  border-radius: var(--r-pill);
}
.player__art {
  width: 44px; height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(150deg, var(--p-amber-400), var(--p-amber-700));
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.4);
  flex: none;
}
.player__art svg { width: 20px; height: 20px; color: #3a1f04; }
.player__meta { min-width: 0; }
.player__meta b {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.player__meta span {
  display: block;
  font-family: var(--f-mono);
  font-size: 0.625rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.player__eq { display: flex; align-items: flex-end; gap: 2px; height: 18px; }
.player__eq i {
  width: 2px;
  border-radius: 1px;
  background: var(--accent);
  animation: eq 900ms var(--ease-in-out) infinite alternate;
}
.player__eq i:nth-child(1) { height: 40%; animation-delay: 0ms; }
.player__eq i:nth-child(2) { height: 85%; animation-delay: 120ms; }
.player__eq i:nth-child(3) { height: 55%; animation-delay: 240ms; }
.player__eq i:nth-child(4) { height: 100%; animation-delay: 360ms; }
@keyframes eq { from { transform: scaleY(0.32); } to { transform: scaleY(1); } }

.hero__note {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.75rem;
  color: var(--muted);
}
.hero__note svg { width: 1em; height: 1em; flex: none; }

@media (min-width: 62rem) {
  .hero__stage { position: relative; }
  .player { bottom: -2.25rem; }
}

/* ------------------------------------------------------- 9. MARQUEE STRIP */
.strip {
  overflow: hidden;
  padding-block: var(--s-3);
  border-block: 1px solid var(--hairline);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.strip__track {
  display: flex;
  width: max-content;
  gap: var(--s-6);
  animation: slide 34s linear infinite;
}
.strip:hover .strip__track { animation-play-state: paused; }
.strip__track li {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.strip__track li::before {
  content: "";
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}
@keyframes slide { to { transform: translateX(-50%); } }

/* ------------------------------------------------------- 10. FEATURE GRID */
.cards {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
}
.card {
  position: relative;
  padding: clamp(1.4rem, 2.5vw, 1.9rem);
  border-radius: var(--r-lg);
  display: grid;
  gap: 0.7rem;
  align-content: start;
  transition: transform var(--t-mid) var(--ease-out), box-shadow var(--t-mid) var(--ease-out);
}
.card:hover { transform: translateY(-3px); }
.card:hover { box-shadow: inset 0 1px 0 0 var(--glass-sheen), inset 0 0 0 1px var(--glass-edge), var(--shadow-3); }
.card__icon {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  background: var(--accent-soft);
  color: var(--accent-ink);
  margin-bottom: 0.35rem;
}
.card__icon svg { width: 21px; height: 21px; }
.card p { font-size: 0.9375rem; color: var(--muted); text-wrap: pretty; }

.card--wide { grid-column: span 2; }
@media (max-width: 44rem) { .card--wide { grid-column: span 1; } }

/* --------------------------------------------------------- 11. SHOWCASE */
.showcase {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}
@media (min-width: 60rem) {
  .showcase { grid-template-columns: 0.9fr 1.1fr; }
  .showcase--flip > :first-child { order: 2; }
}
.showcase__shots {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-4);
}
.shot-card {
  padding: 0.6rem;
  border-radius: var(--r-lg);
  display: grid;
  gap: 0.7rem;
}
.shot-card .shot {
  aspect-ratio: 9 / 17;
  border-radius: var(--r-md);
  min-height: 0;
}
.shot-card figcaption {
  padding: 0 0.4rem 0.35rem;
  font-size: 0.8125rem;
  color: var(--muted);
}
.shot-card figcaption b { color: var(--text); font-weight: 650; display: block; }

/* ------------------------------------------------------------ 12. STEPS */
.steps {
  display: grid;
  gap: var(--s-4);
  counter-reset: step;
}
@media (min-width: 52rem) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step {
  padding: clamp(1.3rem, 2.2vw, 1.75rem);
  border-radius: var(--r-lg);
  display: grid;
  gap: 0.6rem;
  align-content: start;
}
.step__n {
  font-family: var(--f-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.step__n::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, currentColor, transparent);
  opacity: 0.35;
}
.step p { font-size: 0.9375rem; color: var(--muted); text-wrap: pretty; }

/* ------------------------------------------ 13. THE SIGNATURE: BIG "RESO"
   The wordmark is the demo. Glass bars drift across it so you watch the
   letters refract — the material proves itself on the brand's own name.   */

.reso-band {
  position: relative;
  overflow: clip;
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(1rem, 2vw, 1.5rem);
  isolation: isolate;
}
.reso-band__wave {
  position: absolute;
  inset: auto 0 22%;
  height: 46%;
  z-index: -1;
  opacity: 0.5;
  pointer-events: none;
}
.reso-band__word {
  position: relative;
  margin: 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(5rem, 25vw, 22rem);
  line-height: 0.78;
  letter-spacing: -0.055em;
  text-align: center;
  white-space: nowrap;
  user-select: none;
  background: linear-gradient(178deg, var(--wordmark-1) 8%, var(--wordmark-2) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  /* the letters sit under the drifting bars, so the bars read as glass.
     No ::after sheen here on purpose: a background-clip:text pseudo-element
     with no text of its own paints nothing. The gradient above plus the
     drifting bars and the spectrum carry the effect on their own. */
}

.reso-band__bars {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}
.reso-bar {
  position: absolute;
  left: -30%;
  width: 46%;
  height: clamp(5rem, 13vw, 10rem);
  border-radius: var(--r-pill);
  -webkit-backdrop-filter: blur(18px) saturate(1.7) brightness(1.06);
  backdrop-filter: blur(18px) saturate(1.7) brightness(1.06);
  background: linear-gradient(120deg, rgb(255 255 255 / 0.3), rgb(255 255 255 / 0.06) 46%, rgb(255 255 255 / 0.22));
  box-shadow:
    inset 0 1px 0 0 rgb(255 255 255 / 0.75),
    inset 0 -1px 0 0 rgb(255 255 255 / 0.12),
    inset 0 0 0 1px rgb(255 255 255 / 0.3),
    0 18px 50px -14px rgb(0 0 0 / 0.28);
  animation: drift-bar 17s var(--ease-in-out) infinite alternate;
}
.reso-bar:nth-child(1) { top: 14%; height: clamp(4rem, 10vw, 8rem); }
.reso-bar:nth-child(2) { top: 44%; animation-duration: 23s; animation-delay: -6s; }
.reso-bar:nth-child(3) { top: 68%; height: clamp(3rem, 8vw, 6rem); animation-duration: 29s; animation-delay: -12s; }
@keyframes drift-bar {
  from { transform: translateX(0) translateY(0) rotate(-3deg); }
  to { transform: translateX(280%) translateY(-8%) rotate(4deg); }
}

.reso-band__tag {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  padding-top: var(--s-5);
}

/* ------------------------------------------------------------ 14. OCTA */
.octa {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding: clamp(1.75rem, 4vw, 3rem);
  border-radius: var(--r-xl);
  align-items: center;
}
@media (min-width: 56rem) { .octa { grid-template-columns: 1fr auto; } }
.octa__id { display: flex; align-items: center; gap: var(--s-4); }
/* The OCTA mark is light artwork lifted off a black ground (the source was a
   black-background JPG, now keyed to transparent). It therefore needs a dark
   chip in BOTH themes or it disappears into a light page. */
.octa__mark {
  display: grid;
  place-items: center;
  width: 58px; height: 58px;
  flex: none;
  padding: 9px;
  border-radius: var(--r-md);
  background: linear-gradient(158deg, #241a12, #100b08);
  box-shadow:
    inset 0 0 0 1px rgb(255 255 255 / 0.09),
    inset 0 1px 0 0 rgb(255 255 255 / 0.07),
    0 10px 26px -12px oklch(45% 0.14 40 / 0.55);
}
.octa__mark img { display: block; width: 100%; height: 100%; object-fit: contain; }
.octa__links { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.octa__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  min-height: 42px;
  padding: 0.5rem 1rem;
  border-radius: var(--r-pill);
  font-size: 0.875rem;
  font-weight: 620;
  background: var(--glass-fill-strong);
  -webkit-backdrop-filter: blur(14px) saturate(1.5);
  backdrop-filter: blur(14px) saturate(1.5);
  box-shadow: inset 0 1px 0 0 var(--glass-sheen), inset 0 0 0 1px var(--glass-edge);
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-mid) var(--ease-out);
}
.octa__link:hover { transform: translateY(-2px); box-shadow: inset 0 1px 0 0 var(--glass-sheen), inset 0 0 0 1px var(--glass-edge), var(--shadow-2); }
.octa__link svg { width: 1.05em; height: 1.05em; color: var(--accent-ink); flex: none; }

/* ----------------------------------------------------------- 15. FOOTER */
.foot {
  border-top: 1px solid var(--hairline);
  padding-block: var(--s-6) var(--s-7);
  margin-top: clamp(3rem, 7vw, 5rem);
}
.foot__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-4) var(--s-6);
  justify-content: space-between;
}
.foot__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-5);
  margin-top: var(--s-5);
  padding-top: var(--s-5);
  border-top: 1px solid var(--hairline);
}
.foot__legal a {
  font-size: 0.8125rem;
  color: var(--muted);
  transition: color var(--t-fast) var(--ease-out);
}
.foot__legal a:hover { color: var(--text); }

/* -------------------------------------------------------- 16. LEGAL PAGES */
.legal-head {
  padding-block: clamp(3rem, 7vw, 5rem) clamp(1.5rem, 3vw, 2.5rem);
}
.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2) var(--s-5);
  margin-top: var(--s-4);
}
.legal-body {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}
@media (min-width: 62rem) {
  .legal-body { grid-template-columns: 15rem 1fr; align-items: start; }
}
.toc {
  display: grid;
  gap: 0.15rem;
  padding: 1.1rem 1.15rem;
  border-radius: var(--r-lg);
  align-self: start;
}
@media (min-width: 62rem) { .toc { position: sticky; top: 6rem; } }
.toc b {
  font-family: var(--f-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.toc a {
  display: block;
  padding: 0.4rem 0.6rem;
  border-radius: var(--r-xs);
  font-size: 0.875rem;
  color: var(--text-soft);
  border-left: 2px solid transparent;
  transition: color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out);
}
.toc a:hover { color: var(--text); background: var(--hairline); }
.toc a.is-active { color: var(--accent-ink); border-left-color: var(--accent); }

.prose { max-width: var(--measure); }
.prose > * + * { margin-top: 1.1em; }
.prose h2 {
  font-family: var(--f-display);
  font-size: clamp(1.35rem, 1.15rem + 0.8vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-top: 2.4em;
  scroll-margin-top: 6rem;
  text-wrap: balance;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-top: 1.8em;
}
.prose p, .prose li { color: var(--text-soft); text-wrap: pretty; }
.prose ul, .prose ol { display: grid; gap: 0.5em; padding-left: 1.15rem; }
.prose ul li { list-style: none; position: relative; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: -1.15rem;
  top: 0.7em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}
.prose ol { list-style: decimal; }
.prose ol li::marker { color: var(--accent-ink); font-family: var(--f-mono); font-size: 0.85em; }
.prose a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose a:hover { text-decoration-thickness: 2px; }
.prose strong { color: var(--text); font-weight: 680; }

.callout {
  padding: 1.15rem 1.25rem;
  border-radius: var(--r-md);
  font-size: 0.9375rem;
}
.callout p { color: var(--text-soft); margin: 0; }
.callout b { color: var(--text); display: block; margin-bottom: 0.2rem; }

/* ------------------------------------------------------------- 17. 404 */
.nf {
  display: grid;
  place-items: center;
  min-height: calc(100svh - 8rem);
  padding-block: clamp(2rem, 6vw, 4rem);
  text-align: center;
}
.nf__code {
  position: relative;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(6rem, 26vw, 17rem);
  line-height: 0.82;
  letter-spacing: -0.06em;
  background: linear-gradient(172deg, var(--wordmark-1) 10%, var(--wordmark-2) 98%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.nf__code span { position: relative; z-index: 1; }
.nf__code::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: clamp(7rem, 20vw, 13rem); height: clamp(7rem, 20vw, 13rem);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  z-index: 0;
  -webkit-backdrop-filter: blur(20px) saturate(1.8) brightness(1.08);
  backdrop-filter: blur(20px) saturate(1.8) brightness(1.08);
  background: radial-gradient(circle at 40% 35%, rgb(255 255 255 / 0.4), rgb(255 255 255 / 0.05) 70%);
  box-shadow:
    inset 0 1px 0 0 rgb(255 255 255 / 0.7),
    inset 0 0 0 1px rgb(255 255 255 / 0.32),
    0 30px 70px -18px rgb(0 0 0 / 0.3);
  animation: nf-drift 12s var(--ease-in-out) infinite alternate;
}
@keyframes nf-drift {
  from { transform: translate(-58%, -42%) scale(0.94); }
  to   { transform: translate(-42%, -58%) scale(1.08); }
}
.nf__body { display: grid; gap: var(--s-4); justify-items: center; margin-top: var(--s-5); }
.nf__body p { max-width: 46ch; }

/* ---------------------------------------------------- 19. SCROLL REVEAL */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* -------------------------------------------- 20. ACCESSIBILITY STATES */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .aurora__blob, .reso-bar, .player__eq i, .strip__track { animation: none !important; }
  .strip__track { transform: none; }
}

/* Reduce Transparency → opaque fallback, material disappears but hierarchy stays */
@media (prefers-reduced-transparency: reduce) {
  .glass, .btn--glass, .player, .octa__link, .nav, .card, .step, .shot-card, .toc,
  .reso-bar, .nf__code::after {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
    background: var(--bg) !important;
  }
  .reso-bar { background: var(--glass-fill-strong) !important; }
  .nf__code::after { display: none; }
  [data-theme="dark"] .glass,
  [data-theme="dark"] .btn--glass,
  [data-theme="dark"] .player,
  [data-theme="dark"] .octa__link,
  [data-theme="dark"] .nav { background: #211910 !important; }
}

@media (prefers-contrast: more) {
  :root { --hairline: currentColor; }
  .glass, .nav, .card, .step, .shot-card, .toc, .btn--glass, .player, .octa__link {
    box-shadow: inset 0 0 0 1px var(--muted), var(--shadow-1) !important;
  }
  .lede, .card p, .step p, .prose p { color: var(--text); }
}

@media print {
  .aurora, .nav-shell, .reso-band__bars, .strip { display: none !important; }
  body { background: #fff; color: #000; }
  .glass, .card, .step, .toc { box-shadow: none; background: #fff; }
}