:root {
  --bg: #070605;
  --bg-2: #0d0c0b;
  --ink: #f4f1ec;
  --ink-soft: #c8c2b8;
  --ink-mute: #8a847a;
  --line: rgba(244, 241, 236, 0.1);
  --line-strong: rgba(244, 241, 236, 0.22);
  --accent: #fd010f;
  --accent-soft: rgba(253, 1, 15, 0.14);
  --serif: "Instrument Serif", "Noto Serif", "Cormorant Garamond", serif;
  --sans: "Outfit", "Manrope", "Noto Sans", sans-serif;
  --display: "Syne", "Manrope", "Noto Sans", sans-serif;
  --pad: clamp(1.5rem, 6vw, 6rem);
  --header: 6.25rem;
  --max: 1180px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  background: var(--bg);
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

body.is-locked {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

::selection {
  background: var(--accent);
  color: #fff;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--ink);
  color: var(--bg);
}

.skip:focus {
  top: 1rem;
}

/* ── Grain / chrome ───────────────────────────────── */
.grain {
  pointer-events: none;
  position: fixed;
  inset: -30%;
  z-index: 40;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  animation: grain-drift 16s ease-in-out infinite alternate;
}

@keyframes grain-drift {
  from {
    transform: translate(0, 0);
  }
  to {
    transform: translate(-3%, 2.5%);
  }
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: 1px;
  background: transparent;
}

.progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.spine {
  pointer-events: none;
  position: fixed;
  top: 0;
  bottom: 0;
  left: var(--pad);
  width: 1px;
  background: var(--line);
  z-index: 5;
  opacity: 0.7;
}

.edge-mark {
  pointer-events: none;
  position: fixed;
  right: calc(var(--pad) - 0.4rem);
  top: 50%;
  z-index: 5;
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center;
  font-family: var(--display);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.42em;
  color: var(--ink-mute);
  white-space: nowrap;
}

.cursor {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 80;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  pointer-events: none;
  mix-blend-mode: difference;
  transition: width 0.35s var(--ease), height 0.35s var(--ease), margin 0.35s var(--ease),
    background 0.35s var(--ease), border-color 0.35s var(--ease);
}

.cursor.is-hover {
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  background: var(--accent);
  border-color: var(--accent);
  mix-blend-mode: normal;
}

html.has-cursor,
html.has-cursor * {
  cursor: none !important;
}

html.has-cursor .cursor {
  display: block;
}

/* ── Loader ───────────────────────────────────────── */
.loader {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  background: var(--bg);
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}

.loader.is-done {
  opacity: 0;
}

.loader.is-gone {
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
  width: min(440px, 78vw);
}

.loader__logo {
  width: 100%;
  height: auto;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.loader.is-ready .loader__logo {
  opacity: 1;
  transform: none;
}

.loader__line {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--line);
  overflow: hidden;
}

.loader__line span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.9s var(--ease);
}

.loader.is-ready .loader__line span {
  transform: scaleX(1);
}

/* ── Header ───────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  height: var(--header);
  padding: 0 var(--pad);
  background: transparent;
  transition: background 0.45s var(--ease), backdrop-filter 0.45s, border-color 0.45s;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(7, 6, 5, 0.72);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom-color: var(--line);
}

.logo {
  display: block;
  width: min(248px, 64vw);
  flex-shrink: 0;
}

.logo img {
  width: 100%;
  height: auto;
}

.nav-desktop {
  display: none;
  gap: 1.75rem;
  margin-left: auto;
  margin-right: 1.85rem;
}

.nav-desktop a {
  position: relative;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color 0.3s;
}

.nav-desktop a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.nav-desktop a:hover {
  color: var(--ink);
}

.nav-desktop a:hover::after {
  transform: scaleX(1);
}

.header-end {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.lang-switch a {
  font-family: var(--display);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  transition: color 0.3s;
}

.lang-switch a:hover,
.lang-switch a[aria-current="page"] {
  color: var(--ink);
}

.lang-switch--header {
  display: none;
}

.lang-switch--mobile {
  margin: 0.5rem 0 1.75rem;
  gap: 1.1rem;
}

.lang-switch--mobile a {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
}

.menu-btn {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  position: relative;
  z-index: 55;
}

.menu-btn span,
.menu-btn span::before,
.menu-btn span::after {
  display: block;
  width: 1.4rem;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.4s var(--ease), opacity 0.3s;
}

.menu-btn span {
  position: relative;
  background: transparent;
}

.menu-btn span::before,
.menu-btn span::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-btn span::before {
  top: -5px;
}

.menu-btn span::after {
  top: 5px;
}

.menu-btn[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-btn[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 45;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 6rem var(--pad) 3rem;
  background: rgba(7, 6, 5, 0.97);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
}

.nav-mobile.is-open {
  opacity: 1;
  visibility: visible;
}

.nav-mobile__link {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 10vw, 4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--line);
  padding: 0.85rem 0;
}

.nav-mobile__link:last-of-type {
  margin-bottom: 1.25rem;
}

.nav-mobile__meta {
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ── Shared type ──────────────────────────────────── */
.kicker {
  margin: 0 0 1.25rem;
  font-family: var(--display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.kicker em {
  font-style: normal;
  color: var(--accent);
}

.section {
  position: relative;
  padding: clamp(5rem, 14vh, 9rem) var(--pad);
  scroll-margin-top: 0.5rem;
}

.wrap {
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.split {
  display: grid;
  gap: 2.5rem;
}

.lede {
  margin: 0;
  max-width: 38rem;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.75;
}

.lede + .lede {
  margin-top: 1.25rem;
}

.muted {
  color: var(--ink-mute);
}

/* ── Reveals ──────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1.15s var(--ease), transform 1.15s var(--ease);
  transition-delay: var(--d, 0s);
}

[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ── Hero ─────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: calc(var(--header) + 6vh) var(--pad) 4.5rem;
  overflow: hidden;
}

.hero-fx {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-fx::after {
  content: "";
  position: absolute;
  width: 42vw;
  height: 42vw;
  left: -16vw;
  bottom: -18vw;
  background: radial-gradient(circle, rgba(244, 241, 236, 0.045) 0%, transparent 70%);
}

.hero-fx__glow {
  position: absolute;
  top: 0;
  left: 0;
  width: min(52vw, 640px);
  height: min(52vw, 640px);
  background: radial-gradient(circle, rgba(253, 1, 15, 0.22) 0%, transparent 70%);
  filter: blur(18px);
  transform: translate(55vw, 8vh);
  will-change: transform;
  opacity: 0.85;
}

.hero-fx__mark {
  position: absolute;
  right: -6%;
  top: 48%;
  width: min(92vw, 1040px);
  height: auto;
  opacity: 0.09;
  transform: translateY(-50%);
  animation: mark-breathe 14s ease-in-out infinite;
}

@keyframes mark-breathe {
  0%,
  100% {
    opacity: 0.055;
    scale: 1;
  }
  50% {
    opacity: 0.12;
    scale: 1.035;
  }
}

.hero__kicker {
  margin-bottom: 1.75rem;
}

.hero__main {
  position: relative;
  z-index: 1;
  flex: 1;
  display: grid;
  gap: 2.75rem;
  align-content: end;
}

.hero h1 {
  margin: 0;
  max-width: 14ch;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.45rem, 6.6vw, 5.6rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.hero h1 em {
  font-style: italic;
  font-weight: 400;
}

.hero-index {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
  min-width: 0;
}

.hero-index a {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.9rem 1.1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  transition: padding 0.45s var(--ease);
}

.hero-index__num {
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.hero-index__body {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.hero-index strong {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.7rem, 3.4vw, 2.55rem);
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.hero-index__body span {
  font-size: 0.88rem;
  color: var(--ink-mute);
}

@media (hover: hover) and (pointer: fine) {
  .hero-index a:hover {
    padding-left: 0.55rem;
  }
}

.hero__foot {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: clamp(3rem, 8vh, 5.5rem);
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}

.hero__tag {
  margin: 0;
  font-family: var(--display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.scroll-hint i {
  display: block;
  width: 1px;
  height: 2.4rem;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

/* ── Practice ─────────────────────────────────────── */
.practice {
  border-top: 1px solid var(--line);
}

.bg-index {
  pointer-events: none;
  position: absolute;
  right: var(--pad);
  top: 4rem;
  font-family: var(--display);
  font-size: clamp(6rem, 22vw, 18rem);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(244, 241, 236, 0.06);
  user-select: none;
}

.practice h2,
.software h2 {
  margin: 0 0 1.5rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 4.2vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  max-width: 16ch;
}

.rule {
  width: 3rem;
  height: 1px;
  background: var(--accent);
  margin: 0 0 2rem;
  border: 0;
}

/* ── Focus ────────────────────────────────────────── */
.focus {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}

.focus h2 {
  margin: 0 0 3rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 4.2vw, 3.6rem);
  letter-spacing: -0.025em;
}

.focus-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.focus-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
  transition: padding 0.45s var(--ease);
}

.focus-item__num {
  font-family: var(--display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.focus-item h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.45rem, 2.6vw, 2.05rem);
  letter-spacing: -0.02em;
}

.focus-item p {
  grid-column: 2;
  margin: 0.15rem 0 0;
  max-width: 36rem;
  color: var(--ink-mute);
  font-size: 0.98rem;
}

@media (hover: hover) and (pointer: fine) {
  .focus-item {
    cursor: default;
  }

  .focus-item:hover {
    padding-left: 0.6rem;
  }

  .focus-item:hover h3 {
    color: var(--ink);
  }
}

.software {
  border-top: 1px solid var(--line);
}

/* ── Contact ──────────────────────────────────────── */
.contact {
  border-top: 1px solid var(--line);
  min-height: 70svh;
  display: flex;
  align-items: center;
}

.contact h2 {
  margin: 0 0 0.75rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 4.2vw, 3.6rem);
  letter-spacing: -0.025em;
}

.contact .lede {
  margin-bottom: 3rem;
}

.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.75rem;
}

.contact-list li[hidden] {
  display: none;
}

.contact-list__label {
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--display);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.contact-link {
  display: inline-block;
  font-family: var(--serif);
  font-size: clamp(1.65rem, 4.2vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 0.45s var(--ease), color 0.3s;
}

.contact-link:hover {
  color: var(--ink);
  background-size: 100% 1px;
}

.contact-link--sm {
  font-size: clamp(1.35rem, 2.8vw, 2rem);
}

.messengers {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
  margin-top: 0.25rem;
}

.messengers .contact-link {
  font-family: var(--sans);
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Footer ───────────────────────────────────────── */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1.5rem var(--pad) 2rem;
  border-top: 1px solid var(--line);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.site-footer strong {
  font-weight: 500;
  color: var(--ink-soft);
}

/* ── Desktop ──────────────────────────────────────── */
@media (min-width: 860px) {
  :root {
    --header: 7rem;
  }

  .menu-btn {
    display: none;
  }

  .lang-switch--header {
    display: flex;
  }

  .nav-desktop {
    display: flex;
  }

  .nav-mobile {
    display: none;
  }

  .logo {
    width: 320px;
  }

  .split {
    grid-template-columns: 0.42fr 0.58fr;
    gap: 4rem;
    align-items: start;
  }

  .hero {
    justify-content: flex-end;
    padding-bottom: 3.5rem;
  }

  .hero__main {
    grid-template-columns: minmax(0, 1.15fr) minmax(16.5rem, 22rem);
    gap: clamp(3rem, 6vw, 7rem);
    align-items: end;
    align-content: center;
  }

  .hero h1 {
    max-width: 12ch;
  }

  .hero-fx__mark {
    left: 50%;
    right: auto;
    width: min(70vw, 980px);
    transform: translate(-50%, -50%);
  }

  .hero-index a {
    padding: 1.55rem 0;
  }

  .focus-item {
    grid-template-columns: 3.5rem 0.34fr 1fr;
    gap: 1.5rem;
    padding: 2.15rem 0;
    align-items: center;
  }

  .focus-item h3 {
    grid-column: 2;
  }

  .focus-item p {
    grid-column: 3;
    margin: 0;
  }
}

@media (max-width: 859px) {
  .spine,
  .edge-mark {
    display: none;
  }

  .hero-fx__mark {
    right: -18%;
    width: 120vw;
    opacity: 0.07;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}