*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --void: #05080b;
  --deep: #0c1218;
  --plum: #1d2730;
  --mauve: #4b5561;
  --taupe: #9ea7ad;
  --cream: #ccd0cf;

  --bg: var(--void);
  --fg: var(--cream);
  --muted: color-mix(in srgb, var(--taupe) 70%, var(--plum) 30%);
  --ring: color-mix(in srgb, var(--cream) 12%, transparent);

  --chrome-1: var(--cream);
  --chrome-2: var(--taupe);
  --chrome-3: var(--mauve);
  --chrome-4: var(--plum);

  font-synthesis: none;
}

html {
  height: 100%;
}

body {
  min-height: 100%;
  font-family: "Manrope", system-ui, sans-serif;
  font-weight: 400;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: -25%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 14% 20%, color-mix(in srgb, var(--cream) 8%, transparent) 0%, transparent 40%),
    radial-gradient(circle at 86% 22%, color-mix(in srgb, var(--mauve) 16%, transparent) 0%, transparent 45%),
    radial-gradient(circle at 50% 92%, color-mix(in srgb, var(--plum) 32%, transparent) 0%, transparent 52%),
    linear-gradient(165deg, color-mix(in srgb, var(--deep) 68%, transparent), transparent 56%);
  transform-origin: center;
  animation: bgDrift 20s ease-in-out infinite alternate;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
  animation: grainMove 7s steps(8) infinite;
}

.glow {
  position: fixed;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.38;
  z-index: 0;
  pointer-events: none;
}

.glow-a {
  top: -20%;
  right: -10%;
  background: radial-gradient(circle, color-mix(in srgb, var(--cream) 28%, transparent) 0%, transparent 70%);
  animation: glowFloatA 16s ease-in-out infinite;
}

.glow-b {
  bottom: -25%;
  left: -15%;
  background: radial-gradient(circle, color-mix(in srgb, var(--mauve) 30%, transparent) 0%, transparent 65%);
  opacity: 0.22;
  animation: glowFloatB 18s ease-in-out infinite;
}

.top {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem clamp(1.25rem, 4vw, 3rem);
  border-bottom: 1px solid var(--ring);
  background: linear-gradient(180deg, color-mix(in srgb, var(--cream) 6%, transparent) 0%, transparent 100%);
}

.top-nav {
  display: flex;
  gap: 1rem;
}

.top-nav a {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.26em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.top-nav a:hover {
  color: var(--fg);
}

.mark {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.16em;
  background: linear-gradient(135deg, var(--chrome-1) 0%, var(--chrome-2) 42%, var(--chrome-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 40px color-mix(in srgb, var(--cream) 20%, transparent);
}

.tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--muted);
  font-weight: 500;
}

.hero {
  position: relative;
  z-index: 1;
  max-width: 44rem;
  margin: 0 auto;
  padding: clamp(2.5rem, 8vw, 5rem) clamp(1.25rem, 4vw, 3rem) 3rem;
  text-align: center;
}

.eyebrow {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.48em;
  color: var(--muted);
  margin-bottom: 1rem;
  font-weight: 500;
}

.title {
  font-family: "Syne", sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 12vw, 5.25rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
}

.title-line {
  display: block;
}

.title-line:first-child {
  color: var(--fg);
  font-weight: 600;
}

.chrome {
  background: linear-gradient(
    110deg,
    var(--chrome-4) 0%,
    var(--chrome-3) 16%,
    var(--chrome-2) 34%,
    var(--chrome-1) 48%,
    var(--chrome-2) 62%,
    var(--chrome-3) 80%,
    var(--chrome-4) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: sheen 10s ease-in-out infinite;
}

@keyframes sheen {
  0%,
  100% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
}

@keyframes bgDrift {
  0% {
    transform: translate3d(-2%, -1.5%, 0) scale(1);
    filter: blur(0px);
  }
  50% {
    transform: translate3d(1.5%, 2%, 0) scale(1.05);
    filter: blur(1px);
  }
  100% {
    transform: translate3d(2%, -1%, 0) scale(1.08);
    filter: blur(0px);
  }
}

@keyframes grainMove {
  0% {
    transform: translate(0, 0);
  }
   25% {
    transform: translate(-1.5%, 1.5%);
  }
  50% {
    transform: translate(1%, -1%);
  }
  75% {
    transform: translate(1.5%, 1%);
  }
  100% {
    transform: translate(0, 0);
  }
}

@keyframes glowFloatA {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-6%, 4%, 0) scale(1.08);
  }
}

@keyframes glowFloatB {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(7%, -5%, 0) scale(1.1);
  }
}

.lead {
  color: var(--muted);
  font-size: 1rem;
  font-weight: 400;
  max-width: 30rem;
  margin: 0 auto 1.75rem;
}

.quote {
  position: relative;
  z-index: 1;
  margin: 0 auto 2.25rem;
  max-width: 34rem;
  padding: 1.35rem 1.35rem 1.2rem;
  border-radius: 1.15rem;
  border: 1px solid var(--ring);
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--deep) 72%, transparent) 0%,
    color-mix(in srgb, var(--void) 88%, transparent) 100%
  );
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--cream) 8%, transparent) inset,
    0 18px 50px color-mix(in srgb, var(--void) 65%, transparent);
}

.quote::before {
  content: "“";
  position: absolute;
  top: 0.35rem;
  left: 1rem;
  font-family: "Playfair Display", serif;
  font-size: 3.25rem;
  line-height: 1;
  color: color-mix(in srgb, var(--taupe) 45%, transparent);
  pointer-events: none;
}

.quote-text {
  font-family: "Playfair Display", serif;
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.15rem, 3.8vw, 1.45rem);
  line-height: 1.35;
  color: color-mix(in srgb, var(--cream) 94%, var(--taupe) 6%);
  margin: 0.35rem 0 0.85rem;
  padding-left: 0.25rem;
}

.quote-author {
  font-family: "Manrope", sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.2rem;
  font-family: inherit;
  font-size: 0.79rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg);
  border-radius: 0.78rem;
  min-width: 10.5rem;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-icon {
  font-size: 1rem;
  opacity: 0.88;
  filter: grayscale(1);
}

.chrome-border {
  position: relative;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--cream) 7%, transparent) 0%,
    color-mix(in srgb, var(--void) 28%, transparent) 100%
  );
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--cream) 12%, transparent) inset,
    0 1px 0 color-mix(in srgb, var(--cream) 7%, transparent) inset,
    0 8px 28px color-mix(in srgb, var(--void) 78%, transparent);
}

.chrome-border::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--cream) 35%, transparent) 0%,
    color-mix(in srgb, var(--mauve) 20%, transparent) 48%,
    color-mix(in srgb, var(--taupe) 26%, transparent) 74%,
    color-mix(in srgb, var(--cream) 30%, transparent) 100%
  );
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.chrome-border:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--cream) 20%, transparent) inset,
    0 1px 0 color-mix(in srgb, var(--cream) 12%, transparent) inset,
    0 12px 40px color-mix(in srgb, var(--void) 82%, transparent),
    0 0 40px color-mix(in srgb, var(--mauve) 14%, transparent);
}

.chrome-border:active {
  transform: translateY(0);
}

.foot {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem 1rem 2.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--ring);
  font-weight: 500;
}

.work {
  position: relative;
  z-index: 1;
  max-width: 56rem;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

.work-head {
  text-align: center;
  margin-bottom: 1.25rem;
}

.work-head h2 {
  font-family: "Sora", sans-serif;
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: -0.02em;
}

.calculator {
  border-radius: 1.1rem;
  border: 1px solid var(--ring);
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--deep) 88%, transparent) 0%,
    color-mix(in srgb, var(--void) 96%, transparent) 100%
  );
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--cream) 7%, transparent) inset,
    0 26px 60px color-mix(in srgb, var(--void) 70%, transparent);
  padding: 1rem;
}

.calc-row {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.calc-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.calc-select {
  width: 100%;
  color: var(--fg);
  background: linear-gradient(180deg, rgba(204, 208, 207, 0.05), rgba(5, 8, 11, 0.5));
  border: 1px solid color-mix(in srgb, var(--cream) 16%, transparent);
  border-radius: 0.75rem;
  padding: 0.72rem 0.85rem;
  font-family: "Manrope", sans-serif;
  font-size: 0.9rem;
}

.calc-readonly {
  cursor: default;
}

.range-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin: 0.8rem 0;
}

.range-block {
  border: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
  border-radius: 0.85rem;
  padding: 0.8rem;
  background: linear-gradient(180deg, rgba(204, 208, 207, 0.04), rgba(11, 14, 18, 0.3));
}

.row-between {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.55rem;
}

.row-between h4 {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
}

.row-between p {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--fg);
}

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 0.35rem;
  border-radius: 999px;
  background: rgba(204, 208, 207, 0.2);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid #0b0e12;
  background: var(--cream);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 2px solid #0b0e12;
  background: var(--cream);
  cursor: pointer;
}

.result-card {
  margin-top: 0.5rem;
  border: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
  border-radius: 0.95rem;
  padding: 0.9rem;
  text-align: center;
  background: linear-gradient(180deg, rgba(204, 208, 207, 0.04), rgba(11, 14, 18, 0.38));
}

.calc-btn {
  min-width: 0;
  width: 100%;
  margin-bottom: 0.85rem;
}

.result-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.result-value {
  font-family: "Syne", sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--cream);
  margin: 0.2rem 0;
}

.result-meta {
  font-size: 0.78rem;
  color: var(--muted);
}

.goods {
  margin-top: 1.25rem;
}

.goods-head {
  text-align: center;
  margin: 1.25rem 0 1rem;
}

.goods-head h2 {
  font-family: "Syne", sans-serif;
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: -0.02em;
}

.goods-grid {
  margin-top: 0.2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.goods-card {
  border: 1px solid color-mix(in srgb, var(--cream) 10%, transparent);
  border-radius: 1rem;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(204, 208, 207, 0.03), rgba(5, 8, 11, 0.46));
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--cream) 5%, transparent) inset,
    0 18px 52px color-mix(in srgb, var(--void) 80%, transparent);
}

.goods-media {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(circle at 30% 20%, rgba(204, 208, 207, 0.06) 0%, transparent 55%),
    linear-gradient(180deg, rgba(204, 208, 207, 0.02), rgba(5, 8, 11, 0.6));
}

.goods-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: contrast(1.02) saturate(0.85);
}

.goods-body {
  padding: 0.9rem 0.9rem 1rem;
  text-align: left;
}

.goods-name {
  font-family: "Syne", sans-serif;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.goods-desc {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  margin-bottom: 0.45rem;
}

.goods-price {
  font-family: "Syne", sans-serif;
  font-size: 1rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
  color: var(--cream);
}

.goods-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.55rem;
  border-radius: 0.65rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--cream) 92%, var(--taupe) 8%);
  border: 1px solid color-mix(in srgb, var(--cream) 12%, transparent);
  background: linear-gradient(180deg, rgba(204, 208, 207, 0.04), rgba(5, 8, 11, 0.35));
}

@supports not (color: color-mix(in srgb, white 50%, black)) {
  :root {
    --muted: #8f9ba0;
    --ring: rgba(204, 208, 207, 0.12);
  }

  body::before {
    background:
      radial-gradient(circle at 14% 20%, rgba(204, 208, 207, 0.08) 0%, transparent 40%),
      radial-gradient(circle at 86% 22%, rgba(74, 92, 106, 0.16) 0%, transparent 45%),
      radial-gradient(circle at 50% 92%, rgba(37, 55, 69, 0.34) 0%, transparent 52%),
      linear-gradient(165deg, rgba(17, 33, 45, 0.66), transparent 56%);
  }

  .glow-a {
    background: radial-gradient(circle, rgba(204, 208, 207, 0.2) 0%, transparent 70%);
  }

  .glow-b {
    background: radial-gradient(circle, rgba(74, 92, 106, 0.24) 0%, transparent 65%);
  }

  .top {
    background: linear-gradient(180deg, rgba(204, 208, 207, 0.04) 0%, transparent 100%);
  }

  .quote {
    background: linear-gradient(145deg, rgba(17, 33, 45, 0.62) 0%, rgba(6, 20, 27, 0.94) 100%);
    box-shadow:
      0 0 0 1px rgba(251, 228, 216, 0.06) inset,
      0 18px 50px rgba(0, 0, 0, 0.45);
  }

  .quote-text {
    color: #d7ddde;
  }

  .chrome-border {
    background: linear-gradient(180deg, rgba(204, 208, 207, 0.06) 0%, rgba(6, 20, 27, 0.56) 100%);
    box-shadow:
      0 0 0 1px rgba(204, 208, 207, 0.12) inset,
      0 1px 0 rgba(204, 208, 207, 0.06) inset,
      0 8px 32px rgba(0, 0, 0, 0.5);
  }

  .chrome-border::before {
    background: linear-gradient(
      135deg,
      rgba(204, 208, 207, 0.3) 0%,
      rgba(74, 92, 106, 0.2) 45%,
      rgba(155, 168, 171, 0.2) 70%,
      rgba(204, 208, 207, 0.24) 100%
    );
  }

  .chrome-border:hover {
    box-shadow:
      0 0 0 1px rgba(204, 208, 207, 0.2) inset,
      0 1px 0 rgba(204, 208, 207, 0.1) inset,
      0 12px 40px rgba(0, 0, 0, 0.55),
      0 0 40px rgba(74, 92, 106, 0.14);
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  .noise,
  .glow-a,
  .glow-b {
    animation: none;
  }

  .chrome {
    animation: none;
    background-position: 50% center;
  }

  .chrome-border {
    transition: none;
  }

  .chrome-border:hover {
    transform: none;
  }
}

@media (max-width: 760px) {
  .calc-row {
    grid-template-columns: 1fr;
  }

  .range-grid {
    grid-template-columns: 1fr;
  }

  .goods-grid {
    grid-template-columns: 1fr;
  }
}