:root {
  --ink: #111817;
  --paper: #f4f1e9;
  --paper-strong: #fffdf7;
  --muted: #68716d;
  --line: rgba(17, 24, 23, 0.15);
  --acid: #d9ff43;
  --acid-dark: #b6dc21;
  --orange: #ff6b35;
  --radius: 22px;
  --shell: min(1240px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

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

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

button,
input {
  font: inherit;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: var(--ink);
  background: var(--acid);
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 20;
  color: var(--paper-strong);
  background: var(--ink);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.header-inner {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  font-size: 23px;
  font-weight: 900;
  letter-spacing: -0.06em;
}

.brand-led {
  color: var(--acid);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 42px);
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  font-weight: 650;
}

.main-nav a {
  transition: color 160ms ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--acid);
}

.cart-link {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cart-count {
  min-width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  color: var(--ink);
  background: var(--acid);
  border-radius: 999px;
  font-size: 12px;
}

.hero {
  position: relative;
  overflow: hidden;
  color: var(--paper-strong);
  background: var(--ink);
}

.hero::after {
  content: "";
  position: absolute;
  right: -16vw;
  bottom: -22vw;
  width: 55vw;
  aspect-ratio: 1;
  border: 1px solid rgba(217, 255, 67, 0.18);
  border-radius: 50%;
}

.hero-grid {
  min-height: 680px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
  gap: clamp(50px, 8vw, 110px);
  align-items: center;
  padding-block: 76px 94px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 18px;
  color: #5f6864;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--acid);
}

.hero h1,
.page-hero h1 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(52px, 7vw, 98px);
  font-weight: 840;
  letter-spacing: -0.075em;
  line-height: 0.91;
}

.hero h1 span {
  color: var(--acid);
}

.hero-lead {
  max-width: 620px;
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 38px;
}

.button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border: 0;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
}

.button-primary {
  color: var(--ink);
  background: var(--acid);
  box-shadow: inset 0 0 0 1px rgba(17, 24, 23, 0.08);
  transition: background 160ms ease, transform 160ms ease;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--acid-dark);
  transform: translateY(-2px);
}

.button-muted {
  width: 100%;
  color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.1);
  cursor: not-allowed;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-block: 8px;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
  font-weight: 750;
}

.hero .text-link {
  color: rgba(255, 255, 255, 0.86);
}

.hero-facts {
  display: flex;
  gap: clamp(28px, 5vw, 60px);
  margin: 56px 0 0;
}

.hero-facts div {
  display: grid;
  gap: 2px;
}

.hero-facts dt {
  font-size: 18px;
  font-weight: 800;
}

.hero-facts dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

.hero-visual {
  position: relative;
  z-index: 2;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.hero-card {
  position: relative;
  z-index: 3;
  width: min(100%, 430px);
  padding: 14px;
  color: var(--ink);
  background: #e8e5dc;
  border-radius: 34px;
  box-shadow: 0 36px 80px rgba(0, 0, 0, 0.32);
  transform: rotate(2.4deg);
}

.hero-card > img {
  width: 100%;
  aspect-ratio: 4 / 4.25;
  object-fit: cover;
  background: #d7d3ca;
  border-radius: 24px;
}

.hero-card-label {
  position: absolute;
  z-index: 2;
  top: 28px;
  left: 28px;
  padding: 7px 11px;
  color: var(--paper-strong);
  background: var(--ink);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-card-meta {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 10px 8px;
}

.hero-card-meta div {
  display: grid;
  gap: 2px;
}

.hero-card-meta div span {
  color: var(--muted);
  font-size: 11px;
}

.hero-card-meta strong {
  max-width: 250px;
  font-size: 15px;
  line-height: 1.25;
}

.light-orbit {
  position: absolute;
  border: 1px solid rgba(217, 255, 67, 0.34);
  border-radius: 50%;
}

.light-orbit::after {
  content: "";
  position: absolute;
  width: 11px;
  aspect-ratio: 1;
  background: var(--acid);
  border-radius: 50%;
  box-shadow: 0 0 24px var(--acid);
}

.light-orbit-one {
  width: 480px;
  aspect-ratio: 1;
}

.light-orbit-one::after {
  top: 39px;
  right: 90px;
}

.light-orbit-two {
  width: 610px;
  aspect-ratio: 1;
  opacity: 0.45;
}

.light-orbit-two::after {
  left: 28px;
  bottom: 150px;
}

.category-strip {
  background: var(--acid);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.category-grid a {
  position: relative;
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  padding: 28px 34px;
  border-right: 1px solid rgba(17, 24, 23, 0.16);
}

.category-grid a:first-child {
  border-left: 1px solid rgba(17, 24, 23, 0.16);
}

.category-grid a::after {
  content: "↗";
  position: absolute;
  top: 28px;
  right: 30px;
  font-size: 20px;
}

.category-grid strong {
  margin-bottom: 4px;
  font-size: clamp(19px, 2vw, 25px);
  letter-spacing: -0.035em;
}

.category-grid small {
  color: rgba(17, 24, 23, 0.62);
}

.category-number {
  position: absolute;
  top: 28px;
  left: 34px;
  font-size: 11px;
  font-weight: 800;
}

.section {
  padding-block: 100px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 42px;
}

.section-heading h2,
.method-section h2,
.product-story h2 {
  margin: 0;
  font-size: clamp(38px, 5vw, 66px);
  letter-spacing: -0.065em;
  line-height: 1;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  overflow: hidden;
  background: var(--paper-strong);
  border: 1px solid rgba(17, 24, 23, 0.07);
  border-radius: var(--radius);
}

.product-image {
  position: relative;
  overflow: hidden;
  display: block;
  background: #e7e2d8;
}

.product-image img {
  width: 100%;
  aspect-ratio: 1 / 0.88;
  object-fit: cover;
  transition: transform 300ms ease;
}

.product-card:hover .product-image img {
  transform: scale(1.025);
}

.product-index {
  position: absolute;
  z-index: 2;
  top: 16px;
  left: 16px;
  min-width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: rgba(255, 253, 247, 0.9);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 850;
}

.product-card-body {
  padding: 24px;
}

.product-category {
  color: #6c756f;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.product-card h2,
.product-card h3 {
  min-height: 2.5em;
  margin: 10px 0;
  font-size: clamp(20px, 2vw, 25px);
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.product-card p {
  min-height: 4.6em;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
}

.price {
  font-weight: 850;
  white-space: nowrap;
}

.round-link {
  width: 42px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  color: var(--paper-strong);
  background: var(--ink);
  border-radius: 50%;
  font-weight: 800;
}

.method-section {
  color: var(--paper-strong);
  background: var(--ink);
}

.method-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(60px, 10vw, 150px);
  padding-block: 110px;
}

.eyebrow-light {
  color: var(--acid);
}

.method-list {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.method-list article {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  padding-block: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.method-list article > span {
  color: var(--acid);
  font-size: 12px;
  font-weight: 850;
}

.method-list h3 {
  margin: 0 0 6px;
  font-size: 21px;
}

.method-list p {
  max-width: 550px;
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
}

.page-hero {
  color: var(--paper-strong);
  background: var(--ink);
  padding-block: 90px 100px;
}

.page-hero h1 {
  font-size: clamp(48px, 7vw, 86px);
}

.page-hero > .shell > p:last-child {
  max-width: 700px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 18px;
}

.page-hero.compact {
  padding-block: 64px 72px;
}

.catalog-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-block: 22px;
  color: var(--muted);
  font-size: 12px;
}

.breadcrumbs a {
  color: var(--ink);
  font-weight: 700;
}

.product-detail {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(42px, 7vw, 100px);
  align-items: center;
  padding-block: 30px 110px;
}

.product-detail-image {
  position: relative;
  overflow: hidden;
  background: #e3ded3;
  border-radius: 30px;
}

.product-detail-image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.detail-tag {
  position: absolute;
  z-index: 2;
  top: 22px;
  left: 22px;
  padding: 8px 12px;
  color: var(--paper-strong);
  background: var(--ink);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-detail-copy h1 {
  margin: 0;
  font-size: clamp(42px, 5.3vw, 72px);
  letter-spacing: -0.07em;
  line-height: 0.98;
}

.detail-lead {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.buy-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-top: 32px;
  padding-block: 24px;
  border-block: 1px solid var(--line);
}

.buy-panel > div {
  display: grid;
}

.detail-price {
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.045em;
}

.buy-panel small {
  color: var(--muted);
}

.stock {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 750;
}

.stock i {
  width: 8px;
  aspect-ratio: 1;
  background: #51a85e;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(81, 168, 94, 0.12);
}

.buy-form {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  margin-top: 24px;
}

.buy-form label {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.buy-form label span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.buy-form input {
  width: 100%;
  min-height: 54px;
  padding-inline: 16px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-align: center;
}

.purchase-notes {
  display: grid;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
  list-style: none;
}

.purchase-notes li::before {
  content: "✓";
  margin-right: 9px;
  color: #467d50;
  font-weight: 900;
}

.product-information {
  color: var(--paper-strong);
  background: var(--ink);
}

.product-info-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(60px, 10vw, 150px);
  padding-block: 110px;
}

.product-story p:last-child {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 17px;
  line-height: 1.7;
}

.spec-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.spec-heading h2 {
  margin: 0;
  font-size: 25px;
}

.spec-heading span {
  max-width: 230px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 11px;
  text-align: right;
}

.specifications dl {
  margin: 0;
}

.specifications dl div {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-block: 19px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.specifications dt {
  color: rgba(255, 255, 255, 0.52);
}

.specifications dd {
  margin: 0;
  font-weight: 700;
  text-align: right;
}

.cart-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 40px;
  align-items: start;
}

.cart-items {
  display: grid;
  gap: 14px;
}

.cart-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 14px;
  background: var(--paper-strong);
  border-radius: 18px;
}

.cart-item img {
  width: 120px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 12px;
}

.cart-item span,
.cart-item p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.cart-item h2 {
  margin: 5px 0;
  font-size: 19px;
  letter-spacing: -0.035em;
}

.cart-summary {
  position: sticky;
  top: 24px;
  padding: 28px;
  color: var(--paper-strong);
  background: var(--ink);
  border-radius: 22px;
}

.cart-summary > span {
  color: var(--acid);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cart-summary > div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-block: 22px;
  padding-block: 18px;
  border-block: 1px solid rgba(255, 255, 255, 0.16);
}

.cart-summary p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
}

.empty-state {
  grid-column: 1 / -1;
  min-height: 420px;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
}

.empty-state > span {
  width: 80px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background: var(--acid);
  border-radius: 50%;
  font-size: 28px;
  font-weight: 900;
}

.empty-state h2 {
  margin: 22px 0 6px;
  font-size: 32px;
  letter-spacing: -0.05em;
}

.empty-state p {
  margin: 0 0 24px;
  color: var(--muted);
}

.error-page {
  min-height: 650px;
  display: grid;
  place-items: center;
  align-content: center;
  text-align: center;
}

.error-page > span {
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.error-page h1 {
  max-width: 760px;
  margin: 16px 0 28px;
  font-size: clamp(38px, 6vw, 70px);
  letter-spacing: -0.06em;
  line-height: 1;
}

.site-footer {
  color: rgba(255, 255, 255, 0.65);
  background: #090e0d;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 0.8fr 0.8fr;
  gap: 60px;
  padding-block: 76px;
}

.brand-footer {
  color: var(--paper-strong);
}

.footer-grid p {
  max-width: 380px;
}

.footer-grid > div {
  display: flex;
  flex-direction: column;
  align-items: start;
  gap: 9px;
}

.footer-grid h2 {
  margin: 0 0 10px;
  color: var(--paper-strong);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-grid a:hover {
  color: var(--acid);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding-block: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 11px;
}

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

@media (max-width: 900px) {
  .header-inner {
    min-height: auto;
    align-items: flex-start;
    padding-block: 20px;
  }

  .main-nav {
    max-width: 520px;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 12px 24px;
  }

  .hero-grid,
  .product-detail,
  .method-grid,
  .product-info-grid,
  .cart-layout {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    padding-top: 64px;
  }

  .hero-visual {
    min-height: 480px;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .method-grid,
  .product-info-grid {
    gap: 60px;
  }

  .cart-summary {
    position: static;
  }
}

@media (max-width: 640px) {
  :root {
    --shell: min(100% - 28px, 1240px);
  }

  .header-inner {
    display: grid;
  }

  .main-nav {
    justify-content: flex-start;
    font-size: 12px;
  }

  .main-nav a:nth-child(2),
  .main-nav a:nth-child(3) {
    display: none;
  }

  .hero-grid {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr);
    gap: 44px;
    padding-block: 58px 72px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: clamp(46px, 15vw, 66px);
  }

  .hero-facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .hero-visual {
    min-height: 360px;
  }

  .hero-card {
    width: min(92%, 390px);
  }

  .light-orbit-one {
    width: 350px;
  }

  .light-orbit-two {
    width: 430px;
  }

  .category-grid,
  .product-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .category-grid a {
    min-height: 138px;
    border-right: 1px solid rgba(17, 24, 23, 0.16);
    border-bottom: 1px solid rgba(17, 24, 23, 0.16);
  }

  .section {
    padding-block: 72px;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .product-card h2,
  .product-card h3,
  .product-card p {
    min-height: 0;
  }

  .product-detail {
    padding-bottom: 76px;
  }

  .buy-form {
    grid-template-columns: 82px 1fr;
  }

  .spec-heading,
  .footer-bottom {
    align-items: start;
    flex-direction: column;
  }

  .spec-heading span {
    text-align: left;
  }

  .cart-item {
    grid-template-columns: 86px 1fr;
  }

  .cart-item img {
    width: 86px;
  }

  .cart-item > strong {
    grid-column: 2;
  }
}

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