:root {
  --ink: #111317;
  --muted: #60656f;
  --line: #dfe2e6;
  --surface: #ffffff;
  --soft: #f3f4f5;
  --yellow: #f5b800;
  --yellow-dark: #d99f00;
  --blue: #1266d6;
  --green: #148348;
  --radius: 18px;
  --shadow: 0 22px 60px rgba(17, 19, 23, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.narrow {
  width: min(820px, calc(100% - 40px));
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  transform: translateY(-160%);
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(17, 19, 23, 0.08);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 76px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 38px;
}

.brand img {
  width: 128px;
  height: 42px;
  object-fit: contain;
  object-position: left center;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.main-nav a {
  color: #3f444d;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 650;
}

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

.header-phone {
  display: flex;
  flex-direction: column;
  text-align: right;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.25;
}

.header-phone span {
  color: var(--green);
  font-size: 0.75rem;
  font-weight: 700;
}

.product-section {
  overflow: hidden;
  padding: 30px 0 70px;
  background:
    linear-gradient(rgba(17, 19, 23, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 19, 23, 0.035) 1px, transparent 1px),
    #f7f8f9;
  background-size: 32px 32px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 28px;
  color: #70757e;
  font-size: 0.84rem;
}

.breadcrumbs a {
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.product-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
  align-items: stretch;
  gap: 34px;
}

.product-visual {
  position: relative;
  min-height: 590px;
  margin: 0;
  padding: 58px 46px 38px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid rgba(17, 19, 23, 0.1);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.product-visual::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 9px;
  content: "";
  border-radius: var(--radius) 0 0 var(--radius);
  background: var(--yellow);
}

.product-visual img {
  width: 100%;
  max-height: 410px;
  margin: auto;
  object-fit: contain;
}

.visual-mark {
  position: absolute;
  top: 22px;
  right: 22px;
  padding: 7px 11px;
  border: 1px solid #dadde1;
  border-radius: 999px;
  color: #555b64;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.product-visual figcaption {
  margin-top: 22px;
  color: #777c84;
  font-size: 0.78rem;
  line-height: 1.45;
}

.product-summary {
  align-self: center;
  padding: 18px 6px 18px 16px;
}

.stock {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 7px 11px;
  border-radius: 999px;
  color: #0d6838;
  background: #dcf5e8;
  font-size: 0.86rem;
  font-weight: 800;
}

.stock span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.eyebrow,
.section-kicker {
  margin: 0 0 8px;
  color: #8a6500;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(2.2rem, 4.1vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(1.8rem, 3vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

h3 {
  margin: 8px 0 8px;
  font-size: 1.13rem;
  line-height: 1.25;
}

.lead {
  max-width: 660px;
  margin: 20px 0 26px;
  color: #4f555e;
  font-size: 1.15rem;
  line-height: 1.55;
}

.part-number {
  margin-bottom: 26px;
  padding: 17px 19px;
  border-left: 4px solid var(--yellow);
  background: #fff;
}

.part-number span,
.part-number small {
  display: block;
  color: #747983;
  font-size: 0.78rem;
}

.part-number strong {
  display: block;
  margin: 2px 0;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
}

.price-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.price-label {
  display: block;
  color: #777c84;
  font-size: 0.82rem;
}

.price {
  display: block;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.tax-note {
  max-width: 140px;
  color: #757a82;
  text-align: right;
  font-size: 0.78rem;
  line-height: 1.35;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.button {
  min-height: 54px;
  padding: 14px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid transparent;
  border-radius: 12px;
  text-align: center;
  text-decoration: none;
  font-size: 0.96rem;
  font-weight: 850;
  line-height: 1.2;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--ink);
  background: var(--yellow);
  box-shadow: 0 10px 26px rgba(245, 184, 0, 0.28);
}

.button-primary:hover {
  background: #ffc61c;
}

.button-secondary {
  border-color: #cdd2d8;
  background: #fff;
}

.button-secondary:hover {
  border-color: var(--ink);
}

.quick-facts {
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 20px;
  color: #585e67;
  list-style: none;
  font-size: 0.88rem;
}

.quick-facts strong {
  color: var(--ink);
}

.trust-strip {
  color: #fff;
  background: var(--ink);
}

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

.trust-grid div {
  padding: 24px 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.trust-grid div:last-child {
  border-right: 0;
}

.trust-grid strong,
.trust-grid span {
  display: block;
}

.trust-grid strong {
  color: var(--yellow);
  font-size: 0.98rem;
}

.trust-grid span {
  color: #c5c8cd;
  font-size: 0.82rem;
}

.content-section {
  padding: 96px 0;
}

.content-section-alt {
  background: var(--soft);
}

.content-grid,
.delivery-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(310px, 0.8fr);
  align-items: start;
  gap: 72px;
}

.content-section article > p:not(.section-kicker),
.section-heading > p:not(.section-kicker),
.delivery-grid > div > p {
  color: #545a63;
  font-size: 1.05rem;
}

.source-note {
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem !important;
}

.source-note a {
  color: #174f9c;
  font-weight: 750;
}

.spec-card,
.contact-card {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 16px 44px rgba(17, 19, 23, 0.07);
}

.spec-card h2,
.contact-card h2 {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.spec-card dl {
  margin: 0;
}

.spec-card dl div {
  padding: 11px 0;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 12px;
  border-top: 1px solid var(--line);
}

.spec-card dt {
  color: #717680;
}

.spec-card dd {
  margin: 0;
  font-weight: 750;
}

.section-heading {
  max-width: 820px;
}

.check-grid {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.check-card {
  padding: 28px;
  border: 1px solid #d8dce1;
  border-radius: 16px;
  background: #fff;
}

.check-card > span {
  color: var(--yellow-dark);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.84rem;
  font-weight: 850;
}

.check-card p {
  margin: 0;
  color: #626771;
  font-size: 0.9rem;
}

.notice {
  margin-top: 24px;
  padding: 18px 22px;
  border: 1px solid #e2c667;
  border-radius: 12px;
  color: #5f4b0d;
  background: #fff8d9;
}

address {
  margin-top: 26px;
  font-style: normal;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  border-top: 7px solid var(--yellow);
}

.contact-card p {
  margin-top: 0;
  color: #676c75;
}

.contact-card a {
  padding: 11px 0;
  border-top: 1px solid var(--line);
  color: #174f9c;
  text-decoration: none;
  font-weight: 750;
}

.contact-card a:hover {
  text-decoration: underline;
}

.faq-section {
  padding-top: 40px;
}

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

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  position: relative;
  padding: 22px 46px 22px 0;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 800;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  position: absolute;
  top: 21px;
  right: 5px;
  content: "+";
  color: #7a5a00;
  font-size: 1.4rem;
  line-height: 1;
}

details[open] summary::after {
  content: "−";
}

details p {
  max-width: 720px;
  margin: -6px 0 22px;
  color: #60656e;
}

.final-cta {
  padding: 58px 0;
  background: var(--yellow);
}

.final-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.final-cta p {
  margin: 0 0 3px;
  font-weight: 700;
}

.final-cta h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
}

.button-dark {
  min-width: 220px;
  color: #fff;
  background: var(--ink);
}

.site-footer {
  padding: 58px 0 26px;
  color: #d6d8dc;
  background: #0b0d10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 48px;
}

.footer-grid img {
  width: 120px;
  height: 40px;
  padding: 3px 8px;
  object-fit: contain;
  border-radius: 4px;
  background: #fff;
}

.footer-grid p {
  margin: 10px 0 0;
  color: #aeb2b8;
  font-size: 0.88rem;
}

.footer-grid strong,
.footer-grid a {
  display: block;
}

.footer-grid a {
  margin-top: 8px;
  color: #fff;
  text-decoration: none;
}

.footer-grid a:hover {
  text-decoration: underline;
}

.footer-bottom {
  margin-top: 38px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  color: #888d95;
  font-size: 0.78rem;
}

.mobile-actions {
  display: none;
}

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

@media (max-width: 920px) {
  .main-nav {
    display: none;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .product-grid,
  .content-grid,
  .delivery-grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    gap: 26px;
  }

  .product-summary {
    padding: 10px 0 0;
  }

  .product-visual {
    min-height: 470px;
  }

  .content-grid,
  .delivery-grid {
    gap: 38px;
  }

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

@media (max-width: 680px) {
  body {
    padding-bottom: 64px;
  }

  .container,
  .narrow {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    position: static;
  }

  .header-inner {
    min-height: 68px;
  }

  .brand img {
    width: 104px;
    height: 36px;
  }

  .header-phone {
    font-size: 0.86rem;
  }

  .product-section {
    padding: 18px 0 48px;
  }

  .breadcrumbs {
    margin-bottom: 18px;
    font-size: 0.75rem;
  }

  .product-grid {
    display: flex;
    flex-direction: column;
  }

  .product-visual {
    min-height: 360px;
    padding: 48px 24px 24px;
  }

  .product-visual img {
    max-height: 260px;
  }

  .visual-mark {
    top: 15px;
    right: 15px;
  }

  h1 {
    font-size: clamp(2.15rem, 11vw, 3.2rem);
  }

  .lead {
    font-size: 1.02rem;
  }

  .price-row {
    align-items: start;
    flex-direction: column;
  }

  .tax-note {
    max-width: none;
    text-align: left;
  }

  .actions,
  .quick-facts {
    grid-template-columns: 1fr;
  }

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

  .trust-grid div {
    padding: 17px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .trust-grid div:last-child {
    border-bottom: 0;
  }

  .content-section {
    padding: 70px 0;
  }

  .content-section article > p:not(.section-kicker),
  .section-heading > p:not(.section-kicker),
  .delivery-grid > div > p {
    font-size: 1rem;
  }

  .spec-card,
  .contact-card,
  .check-card {
    padding: 22px;
  }

  .spec-card dl div {
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .final-cta-inner,
  .footer-bottom {
    align-items: stretch;
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .mobile-actions {
    position: fixed;
    z-index: 30;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 8px;
    gap: 8px;
    border-top: 1px solid #d3d6da;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(14px);
  }

  .mobile-actions a {
    padding: 10px 8px;
    border-radius: 9px;
    text-align: center;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 850;
    background: var(--yellow);
  }

  .mobile-actions a:last-child {
    color: #fff;
    background: var(--ink);
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}